JP7630344B2 - Yarn splicing device and yarn supplying device - Google Patents

Description

One aspect of the present invention relates to a yarn splicing device and a yarn supplying device.

There is known a false twisting machine that applies false twisting to multiple synthetic yarns supplied from a yarn supply package and winds the processed synthetic yarns in a winding device to form a winding package. For example, Patent Document 1 discloses a false twisting machine having a yarn supply stand that holds multiple yarn supply packages and a twisting device that applies false twisting to the yarns supplied from the yarn supply packages. In such a yarn supply stand, a yarn splicing process (tail splicing process) is performed to join the synthetic yarn of a yarn supply package supported by one peg with the synthetic yarn of a yarn supply package supported by another peg. As a result, even if the synthetic yarn of one yarn supply package runs out, the synthetic yarn will be supplied from another yarn supply package, so that the synthetic yarn can be continuously supplied to the twisting device.

Special Publication No. 7-68010

In the above yarn splicing process, yarn is pulled from each of the two yarn supply packages and these yarns are connected using a splicer. At the time of completion of this connection, the yarn portion connecting the yarn supply packages is in a considerably slack state. If one of the yarn supply packages becomes empty in this state, when the slack yarn portion between the packages is sent to the processing section, a local load may be applied to a part of the yarn portion or the yarn portion may come into contact with surrounding parts, which may cause damage to the yarn or yarn breakage. To avoid such problems, after the yarn is connected by the splicer, the worker locks the yarn portion between the packages with a locking portion provided at a predetermined position on the yarn supply stand, and in this locked state, rotates one or both of the yarn supply packages in the direction that pulls the yarn portion to eliminate the slack.

Studies are being conducted to automate this series of operations, including the yarn splicing process in which yarns are pulled from two yarn supply packages, guided to the splicer, and set, and then these yarns are connected by the splicer, and the threading process in which the connected yarn is locked to the locking part described above. However, in order to precisely move the yarn so that it is securely locked to the locking part, it is necessary to firmly grip the yarn in the holding part so that it does not move, but in this case, the gripped yarn part will be damaged. On the other hand, if the yarn is held in a manner that does not damage it, such as by holding it on a hook, the yarn has irregular slack, making it difficult to precisely move the yarn end, and it is easy to fail to thread the yarn on the locking part.

The objective of one aspect of the present invention is to provide a yarn splicing device and yarn supplying device that can automate a series of operations, including yarn splicing and threading, while maintaining yarn quality and improving operational accuracy.

A yarn splicing processing device according to one aspect of the present invention is a yarn splicing processing device for connecting a yarn end of a first yarn supply package and a yarn end of a second yarn supply package attached to a yarn supply stand, and for locking the connected yarn to at least one locking portion provided on the yarn supply stand, and is provided with a suction holding portion that holds the yarn by sucking it, a moving portion that moves the suction holding portion, a connecting portion that connects the yarn end of the first yarn supply package and the yarn end of the second yarn supply package, and a control portion that controls the suction holding portion, the moving portion, and the connecting portion, and the control portion controls a first set operation that causes the suction holding portion to hold the yarn end of the first yarn supply package and moves the suction holding portion so that the yarn end of the first yarn supply package is set to the connecting portion by the moving portion, and a second set operation that causes the suction holding portion to hold the yarn end of the second yarn supply package and moves the yarn end of the second yarn supply package to be set to the connecting portion by the moving portion. and a connecting operation in which the connection unit connects the yarn end of the first yarn supply package to the yarn end of the second yarn supply package after the first and second set operations. The suction holding unit, the moving unit, and the connecting unit are controlled to perform a yarn splicing process including at least one of a first threading operation in which the suction holding unit holds the yarn end of the first yarn supply package and the suction holding unit moves so that the yarn of the first yarn supply package is locked to the locking unit before the first set operation, and a second threading operation in which the suction holding unit holds the yarn end of the second yarn supply package and the suction holding unit moves so that the yarn of the second yarn supply package is locked to the locking unit before the second set operation.

The yarn end of the first yarn supply package and the yarn end of the second yarn supply package referred to here refer not only to the tip of the yarn but also to a portion of the yarn having a predetermined length starting from the tip. The yarn supply stand is provided in the yarn supply section of the yarn processing device and supports a plurality of yarn supply packages. The yarn to be supplied to the processing section of the yarn processing device is wound around the yarn supply package. In the yarn splicing processing device having this configuration, unlike the conventional work sequence performed by an operator, the yarn is threaded on the locking section before the yarn is connected. Since the yarns of the first yarn supply package and the second yarn supply package held by the suction holding section are always subjected to suction force in the suction direction, tension is applied to the yarn portion extending from the yarn supply package to the suction holding section. Since the moving section can move the taut yarn end, the yarn can be moved more precisely than when the yarn end of an irregularly slack yarn is moved, and the yarn can be threaded on the locking section with high precision. Furthermore, since the yarn is held by suction, no damage to the yarn occurs as occurs when the yarn is gripped. When a yarn in which the yarn end of the first yarn supply package and the yarn end of the second yarn supply package are connected is sucked and held by the suction holding section, a portion of the yarn is sucked in a bent state, which can damage the yarn. However, in this configuration, the yarn ends of the first yarn supply package and the second yarn supply package are sucked and held by the suction holding section, so the above-mentioned bending does not occur. Therefore, even if the yarn is held by the suction holding section, it will not be damaged. As a result, it is possible to automate a series of operations, including the yarn joining process and the threading process, while maintaining yarn quality and improving operational accuracy.

In one aspect of the yarn splicing processing device of the present invention, the locking portion includes a first locking portion and a second locking portion, and the first threading operation is an operation of moving the suction holding portion so that the yarn of the first yarn supply package is locked to the first locking portion, and the second threading operation is an operation of moving the suction holding portion so that the yarn of the second yarn supply package is locked to the second locking portion.

In a yarn splicing processing device of this configuration, the same effect as above can be obtained even when a first locking portion on which the yarn of the first yarn supply package is hung and a second locking portion on which the yarn of the second yarn supply package is hung are provided on the yarn supply stand. In particular, when the yarn of the first yarn supply package is locked to the first locking portion and the yarn of the second yarn supply package is locked to the second locking portion, a more stable locking state can be obtained.

In a yarn splicing processing device according to one aspect of the present invention, the first locking section includes a first inner layer side locking section and a first outer layer side locking section, and the second locking section includes a second inner layer side locking section and a second outer layer side locking section, and the first threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction holding section and moving the suction holding section so that the yarn of the first yarn supply package is locked to the first inner layer side locking section by the moving section, and the second threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction holding section and moving the suction holding section so that the yarn of the second yarn supply package is locked to the second outer layer side locking section by the moving section. the first set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of causing the suction holding unit to hold the yarn end on the inner layer side of the first yarn supply package and moving the suction holding unit so that the yarn end on the inner layer side of the first yarn supply package is set to the connection unit by the moving unit; the second set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of causing the suction holding unit to hold the yarn end on the outer layer side of the second yarn supply package and moving the suction holding unit so that the yarn end on the outer layer side of the second yarn supply package is set to the connection unit by the moving unit; The first yarn threading operation when a yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction holding portion, and moving the suction holding portion so that the yarn of the first yarn supply package is locked by the first outer layer side locking portion by the moving portion, and the second yarn threading operation when a yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the inner layer side yarn end of the second yarn supply package by the suction holding portion, and moving the suction holding portion so that the yarn of the second yarn supply package is locked by the second inner layer side locking portion by the moving portion, and The first set operation when the yarn is being unwound from the outer layer side of the second yarn supply package may be an operation of holding the yarn end on the outer layer side of the first yarn supply package with the suction holding unit and moving the suction holding unit so that the yarn end on the outer layer side of the first yarn supply package is set to the connection part by the moving unit, the second set operation when the yarn is being unwound from the outer layer side of the second yarn supply package may be an operation of holding the yarn end on the inner layer side of the second yarn supply package with the suction holding unit and moving the suction holding unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection part by the moving unit, and the connecting operation when the yarn is being unwound from the outer layer side of the second yarn supply package may be an operation of connecting the yarn end on the outer layer side of the first yarn supply package and the yarn end on the inner layer side of the second yarn supply package.

In the yarn splicing device of this configuration, the same effect as above can be obtained even when the yarn supply stand is provided with locking portions corresponding to the yarn on the inner layer side of the first yarn supply package, the yarn on the outer layer side of the first yarn supply package, the yarn on the inner layer side of the second yarn supply package, and the yarn on the outer layer side of the second yarn supply package. In particular, when the yarn of the first yarn supply package is locked with the first inner layer locking portion and the yarn of the second yarn supply package is locked with the second outer layer locking portion when the yarn is unwound from the outer layer side of the first yarn supply package, and when the yarn of the first yarn supply package is locked with the first outer layer locking portion and the yarn of the second yarn supply package is locked with the second inner layer locking portion when the yarn is unwound from the outer layer side of the second yarn supply package, the stability of the locked state at each locking portion can be further improved.

A yarn supplying device according to one aspect of the present invention is a yarn supplying device including a yarn supplying stand having a first mounting section to which a first yarn supplying package is mounted, a second mounting section to which a second yarn supplying package is mounted, and a locking section to which the yarn is locked, and a yarn splicing processing device for connecting a yarn end of the first yarn supplying package mounted on the first mounting section to a yarn end of the second yarn supplying package mounted on the second mounting section and for locking the connected yarn to the locking section, the locking section including at least one first locking section for locking the yarn pulled out from the first yarn supplying package and at least one second locking section for locking the yarn pulled out from the second yarn supplying package, the yarn splicing processing device including a suction holding section for holding the yarn by sucking the yarn, a moving section for moving the suction holding section, a connecting section for connecting the yarn end of the first yarn supplying package to the yarn end of the second yarn supplying package, and a control section for controlling the connecting section, the suction holding section, and the moving section, the control section controlling the suction holding section to hold the yarn end of the first yarn supplying package by the suction holding section, and the yarn splicing processing device including at least one second locking section for locking the yarn pulled out from the second yarn supplying package, the yarn splicing processing device including at least one suction holding section for holding the yarn by sucking the yarn, a moving section for moving the suction holding section, a connecting section for connecting the yarn end of the first yarn supplying package to the yarn end of the second yarn supplying package, and a control section for controlling the connecting section, the suction holding section, and the moving section, the control section controlling the suction holding section to hold the yarn end of the first yarn supplying package by the suction holding section, and the yarn splicing processing device including at least one second locking section for locking the yarn pulled out from the second yarn supplying package. The suction holding unit, the moving unit, and the connecting unit are controlled to perform a yarn splicing process including a first set operation in which the suction holding unit is moved so that the yarn end is set in the connecting unit, a second set operation in which the suction holding unit holds the yarn end of the second yarn supply package and the moving unit moves the suction holding unit so that the yarn end of the second yarn supply package is set in the connecting unit, and a connecting operation in which the connecting unit connects the yarn end of the first yarn supply package to the yarn end of the second yarn supply package after the first set operation and the second set operation, and the suction holding unit and the moving unit are controlled to perform a yarn threading process including at least one of the following operations: a first threading operation in which the suction holding unit holds the yarn end of the first yarn supply package and the moving unit moves the suction holding unit so that the yarn of the first yarn supply package is locked to the first locking unit before the first set operation, and a second threading operation in which the suction holding unit holds the yarn end of the second yarn supply package and the moving unit moves the suction holding unit so that the yarn of the second yarn supply package is locked to the second locking unit before the second set operation.

In the yarn supplying device of this configuration, unlike the conventional work sequence performed by an operator, threading is performed before the yarn is connected. Since the suction force is always acting in the suction direction on the yarns of the first yarn supplying package and the second yarn supplying package held by the suction holding part, tension is applied to the yarn portion from the yarn supplying package to the suction holding part. Since the moving part can move the taut yarn end, it can move the yarn precisely compared to the case of moving the yarn end of an irregularly loose yarn, so that the yarn can be threaded to the locking part with high precision. In addition, since the yarn is held by suction, the yarn is not damaged as in the case of gripping. When the yarn end of the first yarn supplying package and the yarn end of the second yarn supplying package are sucked, a part of the yarn is sucked into the suction holding part in a bent state, which causes damage to the yarn. However, in this configuration, the yarn ends of the first yarn supplying package and the second yarn supplying package are sucked, so the above-mentioned bending does not occur. Therefore, even if the yarn is held by the suction holding part, the yarn is not damaged.

Furthermore, in the yarn supplying device of this configuration, a first locking portion is provided in the yarn supplying stand corresponding to the first yarn supply package, and a second locking portion is provided in the yarn supplying stand corresponding to the second yarn supply package. This allows the first locking portion and the second locking portion to be provided in a more appropriate position and orientation than a locking portion that is used for threading the first yarn supply package and threading the second yarn supply package. As a result, threading becomes easier and the threaded yarn is less likely to come off.

Furthermore, in a yarn supplying device of this configuration, the load on the locking portion when rotating the yarn supply package to remove slack after the yarn joining operation can be distributed to each of the first locking portion and the second locking portion. Therefore, it is possible to more effectively prevent the yarn from coming off each of the first locking portion and the second locking portion. Furthermore, even if the yarn comes off one of the first locking portion and the second locking portion, the yarn is locked to the other of the first locking portion and the second locking portion, so that the locked state of the yarn connecting the yarn supply packages can be maintained.

As described above, this type of yarn supplying device can automate a series of operations, including yarn joining and threading, while maintaining yarn quality and improving operational accuracy.

In a yarn feeding device according to one aspect of the present invention, the first locking portion may be disposed closer to the first attachment portion than the center between the first attachment portion and the second attachment portion, and the second locking portion may be disposed closer to the second attachment portion than the center between the first attachment portion and the second attachment portion.

In this configuration, the yarn pulled out from the first yarn supply package is locked to a first locking portion located near the first yarn supply package, and the yarn pulled out from the second yarn supply package is locked to a second locking portion located near the second yarn supply package. This allows for more accurate and stable yarn threading at the first and second locking portions.

In a yarn supplying device according to one aspect of the present invention, the first locking portion includes a first inner layer side locking portion and a first outer layer side locking portion, and the second locking portion includes a second inner layer side locking portion and a second outer layer side locking portion, and a first threading operation when yarn is unwound from the outer layer side of the first yarn supplying package is an operation of holding the yarn end on the inner layer side of the first yarn supplying package by the suction holding portion and moving the suction holding portion so that the yarn of the first yarn supplying package is locked to the first inner layer side locking portion by the moving portion, and a second threading operation when yarn is unwound from the outer layer side of the first yarn supplying package is an operation of holding the yarn end on the outer layer side of the second yarn supplying package by the suction holding portion and locking the yarn of the second yarn supplying package to the second outer layer side locking portion by the moving portion. the first set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of causing the suction holding unit to hold the yarn end on the inner layer side of the first yarn supply package and moving the suction holding unit so that the yarn end on the inner layer side of the first yarn supply package is set to the connecting unit by the moving unit; the second set operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of causing the suction holding unit to hold the yarn end on the outer layer side of the second yarn supply package and moving the suction holding unit so that the yarn end on the outer layer side of the second yarn supply package is set to the connecting unit by the moving unit; the first yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction holding portion, and moving the suction holding portion so that the yarn of the first yarn supply package is locked by the first outer layer side locking portion by the moving portion; the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the inner layer side yarn end of the second yarn supply package by the suction holding portion, and moving the suction holding portion so that the yarn of the second yarn supply package is locked by the second inner layer side locking portion by the moving portion; The first set operation when the yarn is unwound from the outer layer side of the second yarn supply package may be an operation of holding the yarn end on the outer layer side of the first yarn supply package with the suction holding unit and moving the suction holding unit so that the yarn end on the outer layer side of the first yarn supply package is set to the connection part by the moving unit, the second set operation when the yarn is unwound from the outer layer side of the second yarn supply package may be an operation of holding the yarn end on the inner layer side of the second yarn supply package with the suction holding unit and moving the suction holding unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection part by the moving unit, and the connecting operation when the yarn is unwound from the outer layer side of the second yarn supply package may be an operation of connecting the yarn end on the outer layer side of the first yarn supply package and the yarn end on the inner layer side of the second yarn supply package.

In the yarn supply stand of the yarn supply device of this configuration, locking portions are provided corresponding to the inner layer yarn of the first yarn supply package, the outer layer yarn of the first yarn supply package, the inner layer yarn of the second yarn supply package, and the outer layer yarn of the second yarn supply package. This allows each locking portion to be provided in a more appropriate position and orientation. As a result, the accuracy and stability of threading at each locking portion can be further improved.

According to one aspect of the present invention, it is possible to automate a series of operations, including yarn joining and threading, while maintaining yarn quality and improving operational accuracy.

FIG. 1 is a diagram showing the configuration of a false twisting machine and a package changing device according to an embodiment. FIG. 2 is a perspective view showing a yarn supply package with an adapter attached. FIG. 3 is a perspective view showing the creel stand. FIG. 4 is a front view showing the clip. FIG. 5 is a perspective view showing a peg. FIG. 6 is a perspective view showing a package exchange device. FIG. 7 is a diagram showing a schematic configuration of the replacement unit. FIG. 8 is a perspective view showing the yarn splicing device. FIG. 9 is a perspective view showing the yarn splicing device. FIG. 10 is a perspective view showing the yarn splicing device. FIG. 11 is a block diagram showing a functional configuration of a package changing device including a yarn splicing processing device. FIG. 12 is a flowchart showing a series of operations including the yarn splicing process and the yarn threading process in the yarn splicing processing device. 13A and 13B are perspective views showing a series of operations in FIG. 14A and 14B are perspective views showing a series of operations in FIG. 15A and 15B are perspective views showing a series of operations in FIG. FIG. 16 is a perspective view showing a part of a creel stand in which a clip according to the first modification is arranged. FIG. 17 is a flowchart showing a series of operations including a yarn joining process and a yarn threading process in the yarn joining processing device according to the first modified example. 18A and 18B are perspective views showing a series of operations in FIG. 19A and 19B are perspective views showing a series of operations in FIG. FIG. 20 is a perspective view showing a part of a creel stand in which a clip according to the second modification is arranged. FIG. 21 is a flowchart showing a series of operations including a yarn joining process and a yarn threading process in the yarn joining processing device according to the second modified example. 22A and 22B are diagrams showing a state where a yarn has been spliced by the yarn splicing device according to the second modified example.

A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and duplicate descriptions will be omitted.

As shown in FIG. 1, the yarn supplying device 100 of one embodiment includes a creel stand (yarn supplying stand) 20 and a yarn splicing device 9A. The creel stand 20 is provided in the false twisting machine 1. The yarn splicing device 9A of one embodiment is mounted on the package exchange device 9. The yarn splicing device 9A includes a yarn splicing device 60 and a control unit 94, which will be described in detail later (see FIGS. 1 and 11). In the following description, the "Z direction" shown in the figures is the vertical direction (up-down direction), the "X direction" is the horizontal direction, and the "Y direction" is the horizontal direction perpendicular to the "X direction" and is also the direction perpendicular to both the X direction and the Z direction.

The false twisting machine 1 shown in FIG. 1 processes yarn (synthetic yarn) Y supplied from multiple yarn supply packages P1 to produce a winding package P2. The yarn Y is, for example, a synthetic yarn made of a thermoplastic synthetic fiber such as polyester or polyamide. The yarn supply package P1 is formed by winding a partially oriented yarn (POY: Partially Oriented Yarn) onto a yarn supply bobbin B1. The winding package P2 is formed by winding a draw textured yarn (DTY: Draw Textured Yarn) onto a winding bobbin B2. In other words, the false twisting machine 1 processes the yarn Y, which is a semi-oriented yarn, to produce a draw textured yarn.

As shown in FIG. 2, an adapter 8 is attached to the yarn supply package P1. The adapter 8 holds the yarn Y. The adapter 8 has an attachment portion 81, a first holding portion 82, and a second holding portion 83. The attachment portion 81 is attached to the yarn supply bobbin B1 of the yarn supply package P1 so as to be synchronously rotatable. The attachment portion 81 is formed in a cylindrical shape. The attachment portion 81 is attached to the end of the yarn supply bobbin B1 protruding from the side surface of the yarn supply package P1.

The first holding portion 82 holds the yarn end of the yarn Y on the outer layer side (mouth yarn side) of the yarn supply package P1 (hereinafter, the yarn end of the yarn Y on the outer layer side is also referred to as the first yarn end Y1). The first holding portion 82 is provided on the mounting portion 81. The first holding portion 82 has a first arm 821, a first gripping device 822, and a first yarn guide 823. The base end side of the first arm 821 is fixed to the side of the mounting portion 81 and extends along the radial direction of the mounting portion 81. The first gripping device 822 grips the first yarn end Y1. The first gripping device 822 is provided on the tip side of the first arm 821. The first yarn guide 823 is provided on the first arm 821.

The second holding portion 83 holds the yarn end of the yarn Y on the inner layer side (tail yarn side) of the yarn supply package P1 (hereinafter, the yarn end of the yarn Y on the inner layer side is also referred to as the second yarn end Y2). The second holding portion 83 is provided on the mounting portion 81. The second holding portion 83 has a second arm 831, a second gripping device 832, and a second yarn guide 833. The base end side of the second arm 831 is fixed to the side of the mounting portion 81 and extends along the radial direction of the mounting portion 81. The second arm 831 is arranged so as to be positioned in the same straight line as the first arm 821. The second gripping device 832 grips the second yarn end Y2. The second gripping device 832 is provided on the tip side of the second arm 831. The second yarn guide 833 is provided on the second arm 831. In addition, the first yarn end Y1 and the second yarn end Y2 refer not only to the tip of the yarn Y but also to the yarn portion having a predetermined length starting from the tip.

In the adapter 8, the first yarn end Y1 of the yarn supply package P1 is held by the first gripping tool 822 via the first yarn guide 823 of the first holding part 82, and the second yarn end Y2 pulled out from the inner layer side of the yarn supply package P1 is held by the second gripping tool 832 via the first yarn guide 823 of the first holding part 82 and the second yarn guide 833 of the second holding part 83. The adapter 8 is attached to the yarn supply package P1, for example, by an operator. A bobbin cap (not shown) may be attached to the end of the yarn supply bobbin B1 opposite to the end to which the adapter 8 is attached.

As shown in FIG. 1, the false twisting machine 1 includes a yarn supplying section 2, a processing section 3, a winding section 4, a main machine base 5, a winding base 6, and a support frame 7. The components of the yarn supplying section 2, processing section 3, and winding section 4, which will be described later, are arranged in a Y direction (longitudinal direction of the machine base) perpendicular to the running plane of the yarn Y (the plane of the paper in FIG. 1) on which the yarn path from the yarn supplying section 2 through the processing section 3 to the winding section 4 is located.

The yarn supplying section 2 supplies yarn Y to the processing section 3. The yarn supplying section 2 includes a creel stand 20 that holds a plurality of yarn supply packages P1. As shown in Figs. 1 and 3, the creel stand 20 includes a creel base 21, a first support 22, a second support 23, a partition plate 24, a peg (first mounting section/second mounting section) 25, and a clip (locking section) 29. The creel base 21 is installed on the floor surface or the like, and supports the first support 22 and the second support 23. The first support 22 and the second support 23 are erected on the creel base 21.

The first pillars 22 extend along the Z direction (vertical direction). The first pillars 22 are arranged at equal intervals in the Y direction. The first pillars 22 are arranged on one side F1 in the X direction of the creel stand 20. The one side F1 in the X direction is the side on which the processing section 3, which will be described in detail later, is arranged, and is the side on which the yarn Y is sent to the processing section 3 where false twist processing is performed.

The second pillars 23 extend along the Z direction. The second pillars 23 are arranged in pairs in the Y direction, and multiple pairs of second pillars 23, 23 are arranged in the Y direction. The second pillars 23 are arranged on the other side F2 in the X direction of the creel stand 20. The other side F2 in the X direction is the side on which the package exchange device 9, which will be described in detail later, travels and on which the worker who performs the yarn joining operation works. The first pillar 22 group consisting of multiple first pillars 22 and the second pillar 23 group consisting of multiple second pillars 23 are arranged opposite each other in the X direction.

The partition plate 24 is provided so as to straddle the first support pillar 22 and the second support pillar 23. The partition plate 24 is a plate-shaped member and is arranged at a predetermined interval in the Z direction. The partition plate 24 prevents the yarn supply package P1 from falling off the peg 25.

The pegs 25 support the yarn supply package P1. The pegs 25 are provided on the second support pillar 23. A plurality of pegs 25 (e.g., four pegs) are arranged at predetermined intervals in the Z direction of the second support pillar 23. The pegs 25 are arranged between the two partition plates 24 in the Z direction. The pegs 25 are arranged in pairs corresponding to the second support pillars 23, 23 arranged in pairs, and multiple pairs of pegs 25, 25 are arranged in the Y direction.

With the pegs 25 of this configuration, the yarn Y of the yarn supply package P1 supported by one of the pair of pegs (first peg) 25 can be connected to the yarn Y of the yarn supply package P1 supported by the other of the pair of pegs (second peg) 25. Specifically, the first yarn end Y1 of the yarn supply package P1 supported by one of the pair of pegs 25 can be connected to the second yarn end Y2 of the yarn supply package P1 supported by the other of the pair of pegs 25, or the second yarn end Y2 of the yarn supply package P1 supported by one of the pair of pegs 25 can be connected to the first yarn end Y1 of the yarn supply package P1 supported by the other of the pair of pegs 25. As a result, one yarn Y is supplied from two yarn supply packages P1, P1 supported by each of the pair of pegs 25, 25. In other words, the yarn Y can be supplied continuously to the processing section 3.

The clip 29 is disposed between the pair of pegs 25, 25 in the Y direction. In this embodiment, the clip 29 is disposed in the center of the pair of pegs 25, 25. As shown in FIG. 4, the clip 29 has a pair of plate plates 291, 292, an elastic member 293 that biases the pair of plate plates 291, 292 toward the partition plate 24, and a shaft portion 294. The pair of plate plates 291, 292 are provided so as to be movable within a predetermined range in the extending direction of the shaft portion 294, and are biased toward the partition plate 24 by the elastic member 293. When the thread Y is disposed between the pair of plate plates 291, 292, it is clamped by the pair of plate plates 291, 292, and the thread Y is engaged. The elastic force of the elastic member 293 is appropriately selected or adjusted so that the engagement by the pair of plate plates 291, 292 is released when the operator pulls the thread Y.

As shown in FIG. 5, the peg 25 has a yarn package support portion 251, a peg body portion 252, a first rotation mechanism 253, a body support portion 254, and a second rotation mechanism 255.

The yarn supply package support section 251 supports the yarn supply package P1. The yarn supply package support section 251 has package support members 251A and 251B. The package support members 251A and 251B are rod-shaped members. The package support members 251A and 251B are rotatably supported by the peg body section 252. The package support members 251A and 251B extend in one direction and are arranged at a predetermined interval so as to be parallel to each other. The peg 25 supports the yarn supply package P1 at two points by the package support members 251A and 251B.

A covering portion 251D is provided at one end of the package support member 251A in the extension direction. A covering portion 251E is provided at one end of the package support member 251B in the extension direction. The covering portions 251D and 251E are formed of, for example, rubber (resin) or the like having a high coefficient of friction. The covering portions 251D and 251E come into contact (abut) with the inner peripheral surface of the yarn supplying bobbin B1 of the winding package P2. One end of the package support member 251A and one end of the package support member 251B are connected by a connecting member 251F.

The peg body 252 supports the package support member 251A and the package support member 251B so that they can rotate around their rotation axis. The peg body 252 is provided with a regulating member 252A. The regulating member 252A is formed, for example, in a disk shape. The regulating member 252A is arranged on one side of the peg body 252. The regulating member 252A is attached by inserting the package support member 251A and the package support member 251B. The regulating member 252A faces the end face of the yarn supply package P1 and regulates the movement of the yarn supply package P1 in the extension direction of the package support member 251A and the package support member 251B. The peg body 252 is formed with an insertion hole 252B. The second support 23 (see FIG. 3) of the creel stand 20 is inserted into the insertion hole 252B.

The first rotating mechanism 253 has a driven pulley 253A, a driving pulley 253B, a power transmission belt 253C, and a first wheel 253D. The driven pulley 253A is provided at the other end of the package support member 251A. The driving pulley 253B is provided at the other end of the package support member 251B. The power transmission belt 253C is stretched across the driven pulley 253A and the driving pulley 253B. The first wheel 253D is provided on the driving pulley 253B (package support member 251B). In this embodiment, the first wheel 253D is a Geneva wheel that constitutes a Geneva mechanism. The first wheel 253D is rotated by the rotational drive of the first yarn joining driver 621 or the second yarn joining driver 631 of the yarn joining device 60 described later.

The body support part 254 is formed in a cylindrical shape. One end of the body support part 254 is connected to the peg body part 252, and the body support part 254 and the peg body part 252 are formed integrally. The hollow part of the body support part 254 communicates with the insertion hole 252B of the peg body part 252. The second support post 23 of the creel stand 20 (see Figure 3) is inserted into the body support part 254.

The second rotation mechanism 255 is a Geneva wheel that constitutes the Geneva mechanism. The second rotation mechanism 255 is connected to the other end of the main body support part 254, and the second rotation mechanism 255 and the main body support part 254 are formed integrally. The second rotation mechanism 255 is rotated by the drive of a rotation driver 932A of the rotation device 932 described later. The peg main body part 252 rotates in conjunction with the rotation of the second rotation mechanism 255. This causes the package support members 251A and 251B to rotate.

The processing section 3 applies false twist processing to the yarn Y supplied from the yarn supplying section 2. As shown in FIG. 1, the processing section 3 includes a twist stop guide 31, a first heating device 32, a cooling device 33, a false twist device 34, a second heating device 35, and a feed roller 36 (feed rollers 361 to 363). Each of the twist stop guide 31, the first heating device 32, the cooling device 33, the false twist device 34, the second heating device 35, and the feed roller 36 (feed rollers 361 to 363) is provided individually for each yarn Y supplied from the yarn supplying section 2, and is arranged in a row in the Y direction.

The twist stop guide 31 prevents the twist imparted to the yarn Y by the false twist device 34 described below from propagating upstream of the twist stop guide 31 in the yarn running direction. The first heating device 32 heats the yarn Y sent from the yarn supplying section 2 via a feed roller 361. The cooling device 33 cools the yarn Y heated by the first heating device 32. The false twist device 34 twists the yarn Y. The second heating device 35 heats the yarn Y sent from the false twist device 34 via a feed roller 362.

A feed roller 361 is provided between the creel stand 20 and the twist stop guide 31, a feed roller 362 is provided between the false twist device 34 and the second heating device 35, and a feed roller 363 is provided between the second heating device 35 and the winding device 41. Each feed roller 36 (feed rollers 361 to 363) includes a drive roller and a driven roller. Each feed roller 36 is also arranged in a row in the Y direction.

The speed at which the yarn Y is conveyed by the feed roller 362 is faster than the speed at which the yarn Y is conveyed by the feed roller 361, and the yarn Y is stretched between the feed roller 361 and the feed roller 362. The speed at which the yarn Y is conveyed by the feed roller 363 is slower than the speed at which the yarn Y is conveyed by the feed roller 362, and the yarn Y is relaxed between the feed roller 362 and the feed roller 363.

In the processing section 3 configured as described above, the yarn Y drawn between the feed rollers 361 and 362 is twisted by the false twist device 34. The twist formed by the false twist device 34 propagates to the twist stop guide 31, but does not propagate upstream of the twist stop guide 31 in the yarn running direction. The yarn Y, which has been drawn and twisted, is heated and heat-set by the first heating device 32, and then cooled by the cooling device 33. The yarn Y is untwisted downstream from the false twist device 34, but each filament is maintained in a false twisted state by the heat setting described above.

The yarn Y is thermally fixed by the second heating device 35 while being relaxed between the feed roller 362 and the feed roller 363. Finally, the yarn Y sent from the feed roller 363 is wound by the winding device 41 of the winding section 4 to form a winding package P2.

The winding section 4 includes a winding device 41, a package stocker 42, and a doffing device (not shown). The winding device 41 winds the yarn Y that has been false twisted in the processing section 3 to form a winding package P2. The package stocker 42 stores the winding package P2 formed by the winding device 41. The doffing device removes the winding package P2 formed by the winding device 41, transfers the winding package P2 to the package stocker 42, and attaches an empty winding bobbin B2 to the winding device 41.

The package changing device 9 retrieves the yarn supplying bobbin B1 from the peg 25 and attaches the yarn supplying package P1 to the peg 25. As shown in FIG. 6, the package changing device 9 travels along a rail 98. The rail 98 is laid on the floor and extends along the Y direction. That is, the package changing device 9 is provided so as to be able to travel along the Y direction. The package changing device 9 includes a traveling unit 90, a lifting unit 91, a holding unit 92, a changing unit 93, a yarn joining device 60, and a control unit 94 (see FIG. 11) that controls the operation of each unit 90, 91, 92, 93 and the yarn joining device 60.

The traveling unit 90 is provided with wheels that travel on rails 98, a drive mechanism, and the like. The traveling unit 90 supports a lifting unit 91, a holding unit 92, and a replacement unit 93. The lifting unit 91 lifts and lowers with an operator on board. The lifting unit 91 is used during maintenance and the like. The lifting unit 91 is provided with a work platform 911 on which the operator boards, a guide unit 912 that supports the work platform 911 so that it can move in the Z direction, and a drive mechanism (not shown) that drives the work platform.

The holding unit 92 holds multiple (e.g., four) yarn supply packages P1. The holding unit 92 receives yarn supply packages P1 from a package supply device (not shown) and temporarily stores the yarn supply packages P1, while supplying the yarn supply packages P1 to the replacement unit 93. The holding unit 92 is rotatable within a range of approximately 90°. More specifically, the holding unit 92 is rotatable between a supply position where the holding unit 92 receives yarn supply packages P1 from the package supply device and a supply position (position shown in FIG. 6) where the holding unit 92 supplies the yarn supply packages P1 to the replacement unit 93.

The replacement unit 93 replaces the yarn supply bobbin B1 with the yarn supply package P1 in the peg 25. Specifically, the replacement unit 93 retrieves the yarn supply bobbin B1 (see FIG. 1) from the peg 25 and attaches the yarn supply package P1 to the peg 25. The replacement unit 93 is provided adjacent to the holding unit 92. As shown in FIG. 7, the replacement unit 93 includes a base 931, a rotating device 932, a recovery device 933, a supply device 934, and a rotating table 936. Note that in FIG. 6, the rotation device 932, the recovery device 933, the supply device 934, the rotating table 936, and the yarn joining device 60, which will be described in detail later, are omitted.

The base 931 supports the rotating device 932 and a rotating table 936 that supports the recovery device 933, the supply device 934, and the yarn joining device 60. The base 931 is provided so as to be movable up and down in the Z direction. The rotating device 932 is fixed to the base 931. The rotating device 932 rotates the peg 25 of the creel stand 20. The rotating device 932 has a rotating driver 932A and a rotating arm 932B.

The rotating driver 932A rotates the second rotating mechanism 255 (see FIG. 5) of the peg 25. The rotating driver 932A is a Geneva driver that constitutes a Geneva mechanism. The rotating driver 932A rotates by the rotation drive of a motor (not shown). The rotating arm 932B supports the rotating driver 932A. The rotating arm 932B is arranged so that it can swing in the horizontal direction. The rotating arm 932B is driven by, for example, a motor or an air cylinder (not shown). The rotating device 932 is arranged to correspond to one peg 25 and the other peg 25 that are arranged in a pair on the creel stand 20.

When attaching the yarn supply package P1 to the peg 25, the rotation device 932 rotates the peg 25 to change the orientation of the peg 25. More specifically, the rotation device 932 swings the rotation arm 932B to engage the rotation driver 932A with the second rotation mechanism 255 of the peg 25. When the rotation driver 932A and the second rotation mechanism 255 engage with each other, the rotation device 932 rotates the rotation driver 932A in one direction. When the second rotation mechanism 255 rotates, the main body support part 254 of the peg 25 rotates. This rotates the peg 25, and the tip of the yarn supply package support part 251 faces the replacement unit 93.

The recovery device 933 is provided on a rotating table 936 rotatably supported on a base 931. The recovery device 933 recovers the yarn supplying bobbin B1 from the peg 25. The recovery device 933 has a yarn supplying bobbin support portion 933A that supports the yarn supplying bobbin B1. The recovery device 933 supports the yarn supplying bobbin B1 by advancing the yarn supplying bobbin support portion 933A in a state where the yarn supplying bobbin B1 is not supported relative to the peg 25, and recovers the yarn supplying bobbin B1 from the peg 25 by retracting the yarn supplying bobbin support portion 933A in a state where the yarn supplying bobbin B1 is supported relative to the peg 25.

The supply device 934 is provided on a rotating table 936 rotatably supported on a base 931. The supply device 934 supplies the yarn supply package P1 to the peg 25. The supply device 934 has a yarn supply package supply section 934A that supports the yarn supply package P1. The supply device 934 attaches the yarn supply package P1 to the peg 25 by advancing the yarn supply package supply section 934A while supporting the yarn supply package P1 relative to the peg 25, and supplies the yarn supply package P1 to the peg 25 by retracting the yarn supply package supply section 934A while not supporting the yarn supply package P1 relative to the peg 25.

The package changing device 9 not only retrieves the yarn supply bobbin B1 from the peg 25 and attaches the yarn supply package P1 to the peg 25, but also connects the yarn ends of the pair of yarn supply packages P1, P1 attached to the pair of pegs 25, 25 of the creel stand 20 (yarn splicing process) and keeps the connected yarn in a state where it is hooked to at least one clip 29 provided on the creel stand 20 (yarn threading process). The above-mentioned yarn splicing process and threading process are performed by the yarn splicing device 9A. The yarn splicing device 9A is composed of a yarn splicing device 60 and a control unit 94.

The yarn splicing device 60 is provided on a rotating table 936 rotatably supported on a base 931. The yarn splicing device 60 splices the first yarn end Y1 of the yarn supply package P1 supported by one peg 25 to the second yarn end Y2 of the yarn supply package P1 supported by the other peg 25, or splices the second yarn end Y2 of the yarn supply package P1 supported by one peg 25 to the first yarn end Y1 of the yarn supply package P1 supported by the other peg 25. Hereinafter, the yarn supply package P1 supported by one peg 25 is also referred to as the first yarn supply package P11, and the yarn supply package P1 supported by the other peg 25 is also referred to as the second yarn supply package P12. As shown in Figures 8, 9, and 10, the yarn splicing device 60 includes a threading mechanism 61, a first rotation mechanism 62, a second rotation mechanism 63, and a yarn splicing mechanism 64.

The threading mechanism 61 captures the yarn Y of the yarn supply package P1 and guides the yarn Y to the yarn joining mechanism 64. The threading mechanism 61 captures the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 and guides them to the yarn joining mechanism 64, or captures the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12 and guides them to the yarn joining mechanism 64. The threading mechanism 61 has a suction gun 611, an arm portion (moving portion) 612, and a hook portion 615.

The suction gun 611 sucks and captures the yarn Y. The suction gun 611 has a suction pipe 613 and a suction nozzle (suction holding part) 614. The suction nozzle 614 is provided at the tip of the suction pipe 613. The suction nozzle 614 sucks the yarn Y. A negative pressure source (not shown) is connected to the suction pipe 613. This generates a suction flow in the suction nozzle 614. The base end side of the suction pipe 613 is connected to the arm part 612. The hook part 615 is provided at the tip of the suction pipe 613 and at a position facing away from the suction nozzle 614. The hook part 615 engages and moves the yarn Y intertwined (spliced) by the yarn joining device 60. The arm part 612 moves the suction gun 611. The arm part 612 is configured to include a link mechanism and multiple motors. The arm portion 612 is supported by a bracket 616.

The first rotation mechanism 62 operates one of the pegs 25 to rotate the first yarn supply package P11. When the yarn hooking mechanism 61 guides the yarn Y to the yarn joining mechanism 64, the first rotation mechanism 62 rotates the first yarn supply package P11 to let out the yarn Y from the first yarn supply package P11. The second rotation mechanism 63 operates the other peg 25 to rotate the second yarn supply package P12. When the yarn hooking mechanism 61 guides the yarn Y to the yarn joining mechanism 64, the second rotation mechanism 63 rotates the second yarn supply package P12 to let out the yarn Y from the second yarn supply package P12.

The first rotation mechanism 62 has a first yarn splicing driver 621, a first motor 622, and a first arm portion 623. The first yarn splicing driver 621 is rotatably supported by the first arm portion 623. The first yarn splicing driver 621 is provided with a first driven pulley 624. The first motor 622 is fixed to the first arm portion 623. A first driving pulley 625 is connected to the output shaft of the first motor 622. The first motor 622 drives the first driving pulley 625 to rotate around its axis. A first power transmission belt 626 is stretched between the first driven pulley 624 and the first driving pulley 625. As a result, the first yarn splicing driver 621 rotates due to the rotational drive of the first motor 622.

The second rotation mechanism 63 has a second yarn splicing driver 631, a second motor 632, and a second arm portion 633. The second yarn splicing driver 631 is rotatably supported by the second arm portion 633. The second yarn splicing driver 631 is provided with a second driven pulley 634. The second motor 632 is fixed to the second arm portion 633. A second drive pulley 635 is connected to the output shaft of the second motor 632. The second motor 632 drives the second drive pulley 635 to rotate around its axis. A second power transmission belt 636 is stretched between the second driven pulley 634 and the second drive pulley 635. As a result, the second yarn splicing driver 631 rotates due to the rotation drive of the second motor 632.

The yarn joining mechanism 64 performs yarn joining. The yarn joining mechanism (connection section) 64 has a splicer 66, a first guide mechanism 67, and a second guide mechanism 68.

The splicer 66 includes a yarn splicing section 661, a pair of clamping sections 662, 663, a cutter 664 provided in the clamping section 662, and a cutter 665 provided in the clamping section 663. The yarn splicing section 661 intertwines (connects) the first yarn end Y1 of the first yarn supply package P11 with the second yarn end Y2 of the second yarn supply package P12, or intertwines (connects) the second yarn end Y2 of the first yarn supply package P11 with the first yarn end Y1 of the second yarn supply package P12. The pair of clamping sections 662, 663 are provided at positions that sandwich the yarn splicing section 661. The pair of clamping sections 662, 663 clamp the yarn Y (the first yarn end Y1 and the second yarn end Y2: see FIG. 14A)) that is inserted into the chamber of the yarn splicing section 661. The cutters 664 and 665 cut off excess portions, including the portion that was held by suction with the suction nozzle 614, from the portion of the yarn Y that was joined by the yarn joining unit 661.

The first guide mechanism 67 holds and guides the yarn Y. The first guide mechanism 67 is provided so as to be able to swing. The first guide mechanism 67 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the first motor 622 of the first rotation mechanism 62 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the amount of rotation (payout amount) of the first yarn supply package P11 based on the detection result of the potentiometer, and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension.

The second guide mechanism 68 engages and guides the yarn Y. The second guide mechanism 68 is provided so as to be able to swing. The second guide mechanism 68 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the second motor 632 of the second rotation mechanism 63 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the amount of rotation (payout amount) of the second yarn supply package P12 based on the detection result of the potentiometer, and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension.

As shown in FIG. 7, the rotating table 936 is rotatably supported on the base 931. When collecting the yarn supplying bobbin B1, the rotating table 936 is rotated so that the yarn supplying bobbin support part 933A is positioned in front of the target peg 25. When supplying the yarn supplying package P1, the rotating table 936 is rotated so that the yarn supplying package supply part 934A is positioned in front of the target peg 25. When performing the yarn splicing process of the yarn Y by the yarn splicing device 60, the rotating table 936 is rotated so that it is positioned in front of the target peg 25.

As shown in FIG. 11, the control unit 94 is an electronic control unit consisting of a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), I/O ports, and communication ports. The ROM stores programs for controlling each of the traveling unit 90, lifting unit 91, holding unit 92, and exchange unit 93. Each function of the control unit 94 is executed under the control of the CPU by loading specific computer software onto hardware such as the CPU and main memory unit.

The control unit 94 controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn joining process including a first set operation, a second set operation, and a yarn joining operation (connection operation). Furthermore, the control unit 94 controls the suction nozzle 614 and the arm unit 612 to perform a yarn threading process including one of the first threading operation and the second threading operation.

In this embodiment, the first set operation, the second set operation, the yarn joining operation, the first threading operation, and the second threading operation when the yarn Y is being unwound from the outer layer side of the second yarn supply package P12 (when the yarn Y is being supplied to the processing section 3 from the outer layer side of the second yarn supply package P12) (hereinafter also referred to as the first scene) will be described.

The first set operation in the first scene is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 sets the first yarn end Y1 of the first yarn supply package P11 to the splicer 66. The second set operation is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 sets the second yarn end Y2 of the second yarn supply package P12 to the splicer 66. The yarn joining operation is an operation in which the splicer 66 connects the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 after the first and second set operations.

The first threading operation in the first scene is an operation in which, before the first set operation, the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the clip 29. The second threading operation in the first scene is an operation in which, before the second set operation, the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the clip 29. In the first scene, only one of the first threading operation and the second threading operation is performed.

Next, in this embodiment, the first set operation, the second set operation, the yarn joining operation, the first threading operation, and the second threading operation when the yarn Y is unwound from the outer layer side of the first yarn supply package P11 (when the yarn Y is supplied to the processing section 3 from the outer layer side of the first yarn supply package P11) (hereinafter also referred to as the second scene) will be described.

The first set operation in the second scene is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 sets the second yarn end Y2 of the first yarn supply package P11 to the splicer 66. The second set operation is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 sets the first yarn end Y1 of the second yarn supply package P12 to the splicer 66. The yarn joining operation is an operation in which the splicer 66 connects the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12 after the first set operation and the second set operation.

The first threading operation in the second scene is an operation in which, before the first set operation, the suction nozzle 614 holds the second yarn end Y2 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the clip 29. The second threading operation in the second scene is an operation in which, before the second set operation, the suction nozzle 614 holds the first yarn end Y1 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the clip 29. In the second scene, only one of the first threading operation and the second threading operation is performed.

The following describes in detail a series of operations, including the yarn joining process and the threading process, in the yarn joining device 9A, using Figures 10 to 15. Here, we will explain an example in which the yarn joining device 60 joins the first yarn end Y1 of the first yarn supply package P11 supported by one peg 25 to the second yarn end Y2 of the second yarn supply package P12 supported by the other peg 25 when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (in the first scene described above).

When the yarn splicing device 9A starts the yarn splicing operation, as shown in FIG. 10, it operates one peg 25 with the first rotation mechanism 62 and the other peg 25 with the second rotation mechanism 63, and rotates the adapter 8 to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S1 in FIG. 12).

Specifically, the control unit 94 drives the first motor 622 to rotate the first yarn joining driver 621 engaged with the first wheel 253D of one of the pegs 25. When the first yarn joining driver 621 rotates, the first yarn supply package P11 rotates, and the adapter 8 rotates accordingly. The control unit 94 drives the second motor 632 to rotate the second yarn joining driver 631 engaged with the first wheel 253D of the other peg 25. When the second yarn joining driver 631 rotates, the second yarn supply package P12 rotates, and the adapter 8 rotates accordingly. The control unit 94 controls the first motor 622 and the second motor 632 based on the detection result of a sensor (not shown) that detects a detection body (not shown) provided on the adapter 8, and rotates the adapter 8 to a predetermined position.

The control unit 94 activates the suction gun 611 (step S2 in FIG. 12). This enables the suction gun 611 to suck and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 at the suction nozzle 614 (step S3 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the clip 29 as shown in FIG. 13(A), and hook (lock) the yarn Y of the first yarn supply package P11 onto the clip 29 (step S4 in FIG. 12: first threading operation). More specifically, the yarn Y of the first yarn supply package P11 is locked by being clamped between a pair of plate plates 291, 292 of the clip 29.

Next, with the yarn Y of the first yarn supply package P11 hooked on the clip 29, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67 as shown in Fig. 13(B) and hook the yarn Y of the first yarn supply package P11 onto the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the amount of rotation (payout amount) of the first yarn supply package P11 and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, thereby setting (guiding) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S5 in FIG. 12: first setting operation).

Next, the control unit 94 causes the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (step S6 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 as shown in FIG. 14(A), and sets (guides) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (step S7 in FIG. 12: second setting operation).

Next, the control unit 94 controls the splicer 66 of the yarn joining device 60 to join (connect) the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 as shown in FIG. 14(B). The control unit 94 also controls the cutters 664, 665 of the yarn joining device 60 to cut and remove excess portions, including the portion that was sucked and held by the suction nozzle 614, from the yarn joining portion between the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S8 in FIG. 12: Yarn joining operation (connecting operation)).

Next, the control unit 94 stops the suction gun 611 (step S9 in FIG. 12). Next, the control unit 94 controls the arm unit 612 to hook (hold) the spliced yarn on the hook unit 615, and then moves the hook unit 615 to the outside of the yarn joining mechanism 64. As a result, as shown in FIG. 15(A), the spliced yarn Y is released from the yarn joining mechanism 64, the first guide mechanism 67, and the second guide mechanism 68, and is released from the yarn joining device 60 (step S10 in FIG. 12).

Next, the control unit 94 controls the first motor 622 and the second motor 632 to rotate the first yarn joining driver 621 and the second yarn joining driver 631, and rotates the first yarn supply package P11 and the second yarn supply package P12 as shown in FIG. 15(B). This makes it possible to remove slack in the joined yarn Y that is hooked on the clip 29 (step S11 in FIG. 12).

In the yarn splicing device 9A of the above embodiment, unlike the conventional work order by an operator, the yarn Y is threaded on the clip 29 before the yarn Y is spliced. The yarns Y, Y of the first yarn supply package P11 and the second yarn supply package P12 held by the suction nozzle 614 are always subjected to suction in the suction direction, so tension is applied to the yarn Y portion extending from the first yarn supply package P11 and the second yarn supply package P12 to the suction nozzle 614. The arm portion 612 can move the first yarn end Y1 (or the second yarn end Y2) in a taut state, so that the yarn Y can be moved more precisely than when the first yarn end Y1 (or the second yarn end Y2) of the irregularly slack yarn Y is moved, and therefore the yarn Y can be threaded on the clip 29 with high precision.

In addition, since the yarn Y is held by suction with the suction nozzle 614, the yarn is not damaged when the yarn Y is gripped. When the yarn Y in which the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 are connected, or the yarn Y in which the first yarn end Y1 of the second yarn supply package P12 and the second yarn end Y2 of the first yarn supply package P11 are connected, the yarn Y is damaged because a part of the yarn Y is sucked into the suction nozzle 614 in a bent state. However, in the configuration of the above embodiment, the yarn Y is held by sucking the first yarn end Y1 or the second yarn end Y2 of the first yarn supply package P11, and the second yarn end Y2 or the first yarn end Y1 of the second yarn supply package P12, so that the above-mentioned bending does not occur. Therefore, even if the yarn Y of the first yarn supply package P11 and the second yarn supply package P12 is held by the suction nozzle 614, the yarn Y is not damaged. As a result, it is possible to automate a series of operations, including yarn joining and threading, while maintaining yarn quality and improving operational accuracy.

Although an embodiment of one aspect of the present invention has been described above, this aspect of the present invention is not necessarily limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.

(Variation 1)
In the creel stand 20 of the above embodiment, an example has been described in which only one clip 29 is disposed between the pair of pegs 25, 25 in the Y direction as shown in Fig. 3, but the present invention is not limited to this. For example, as shown in Fig. 16, the creel stand 20 may have two clips 29A, 29B disposed between the pair of pegs 25, 25 in the Y direction.

That is, the creel stand 20 according to the first modification includes a first clip (locking portion, first locking portion) 29A arranged at a position farther from the second yarn supply package P12 supported by one peg 25 than the first yarn supply package P11 supported by the other peg 25, and a second clip (locking portion, second locking portion) 29B arranged at a position closer to the second yarn supply package P12 supported by the other peg 25 than the first yarn supply package P11 supported by the one peg 25. The first clip 29A of the creel stand 20 according to the first modification is arranged closer to the one peg 25 supporting the first yarn supply package P11 than the center between the pair of pegs 25, 25, and the second clip 29B is arranged closer to the other peg 25 supporting the second yarn supply package P12 than the center between the pair of pegs 25, 25.

The control unit 94 of the yarn splicing device 9A according to the first modification controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn splicing process including a first set operation, a second set operation, and a yarn splicing operation (connection operation). The first set operation, the second set operation, and the yarn splicing operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn supply package P12) and the second scene (when the yarn Y is unwound from the outer layer side of the first yarn supply package P11) described above are the same as those in the above embodiment, so detailed explanations are omitted. In the yarn splicing device 9A according to the first modification, unlike the above embodiment, the control unit 94 controls the suction nozzle 614 and the arm unit 612 to perform a yarn threading process including both the first threading operation and the second threading operation in each of the first and second scenes.

The first threading operation in the first scene is an operation in which, before the first set operation, the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the first clip 29A. The second threading operation in the first scene is an operation in which, before the second set operation, the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the second clip 29B.

The first threading operation in the second scene is an operation in which, before the first set operation, the suction nozzle 614 holds the second yarn end Y2 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the first clip 29A. The second threading operation in the second scene is an operation in which, before the second set operation, the suction nozzle 614 holds the first yarn end Y1 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the second clip 29B.

Even if the configuration includes the first clip 29A and the second clip 29B, only one of the first threading operation and the second threading operation may be performed in each of the first and second scenes.

The series of operations including the yarn splicing process and the threading process in the yarn splicing device 9A will be described in detail below with reference to Figures 17 to 19. Here, too, an example will be described in which the yarn splicing device 60 splices the first yarn end Y1 of the first yarn supply package P11 supported by one peg 25 to the second yarn end Y2 of the second yarn supply package P12 supported by the other peg 25 when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (in the first scene described above).

As in the above embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn supply package P11 and the second yarn supply package P12) to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S21 in FIG. 17).

The control unit 94 activates the suction gun 611 (step S22 in FIG. 17). This enables the suction gun 611 to suck and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 at the suction nozzle 614 (step S23 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first clip 29A as shown in FIG. 18(A), and hook the yarn Y of the first yarn supply package P11 onto the first clip 29A (step S24 in FIG. 17: first threading operation).

Next, with the yarn Y of the first yarn supply package P11 hooked on the first clip 29A, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67 as shown in Fig. 18(A) and hook the yarn Y of the first yarn supply package P11 onto the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the amount of rotation (payout amount) of the first yarn supply package P11 and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64 and set (guide) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S25 in FIG. 17: first setting operation).

Next, the control unit 94 causes the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (step S26 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second clip 29B as shown in FIG. 18(B), and hook the yarn Y of the second yarn supply package P12 onto the second clip 29B (step S27 in FIG. 17: second yarn hooking operation).

Next, the control unit 94 controls the arm unit 612 with the yarn Y of the second yarn supply package P12 hooked on the second clip 29B to move the suction nozzle 614 holding the second yarn end Y2 to the second guide mechanism 68 as shown in FIG. 18B, and hook the yarn Y of the second yarn supply package P12 to the second guide mechanism 68. The control unit 94 adjusts the rotation amount (feed amount) of the second yarn supply package P12 based on the detection result of the potentiometer provided on the second guide mechanism 68, and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (step S28 in FIG. 17: second setting operation).

Next, the control unit 94 controls the splicer 66 of the yarn joining device 60 to join (connect) the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12. The control unit 94 also controls the cutters 664, 665 of the yarn joining device 60 to cut and remove excess portions, including the portion that was sucked and held by the suction nozzle 614, from the yarn joining portion between the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S29 in FIG. 17: Yarn joining operation (connecting operation)).

Next, the control unit 94 stops the suction gun 611 (step S30 in FIG. 17). Next, the control unit 94 controls the arm unit 612 to hook (hold) the spliced yarn on the hook unit 615, and then moves the hook unit 615 to the outside of the yarn joining mechanism 64. As a result, as shown in FIG. 19(A), the spliced yarn Y is released from the yarn joining mechanism 64, the first guide mechanism 67, and the second guide mechanism 68, and is moved outside the yarn joining device 60 (step S31 in FIG. 17).

Next, the control unit 94 controls the first motor 622 and the second motor 632 to rotate the first yarn joining driver 621 and the second yarn joining driver 631, and rotates the first yarn supply package P11 and the second yarn supply package P12 as shown in FIG. 19(B). This makes it possible to remove slack in the joined yarn Y that is hooked on the clip 29 (step S32 in FIG. 17).

In the yarn splicing device 9A and the yarn supplying device 100 according to the first modification, the yarn Y is secured to both the first clip 29A and the second clip 29B by the first threading operation and the second threading operation, so that a more stable secured state can be obtained.

(Variation 2)
As a further modification of the above embodiment, for example, as shown in FIG. 20, the creel stand 20 may have four clips 29C, 29D, 29E, and 29F arranged between a pair of pegs 25, 25 in the Y direction.

That is, the creel stand 20 according to the second modification is disposed at a position farther from the second yarn supply package P12 supported by one peg 25 than the first yarn supply package P11 supported by the other peg 25, and a pair of first inner layer side clips (locking portion, first locking portion, first inner layer side locking portion) 29C and a pair of first outer layer side clips (locking portion, first locking portion, first outer layer side locking portion) 29C are provided corresponding to the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the first yarn supply package P11, respectively. part) 29D, and a pair of second inner layer clips (locking part, second locking part, second inner layer locking part) 29E and second outer layer clips (locking part, second locking part, second outer layer locking part) 29F that are arranged closer to the second yarn supply package P12 supported by the other peg 25 than the first yarn supply package P11 supported by the other peg 25 and are provided corresponding to the second yarn end Y2 of the second yarn supply package P12 and the first yarn end Y1 of the second yarn supply package P12, respectively.

The first inner layer clip 29C, the first outer layer clip 29D, the second inner layer clip 29E, and the second outer layer clip 29F of this modified example 2 are fixed to the partition plate 24 via the bracket 24A. The first inner layer clip 29C and the first outer layer clip 29D have different orientations (the orientations of the pair of plate plates 291, 292). The second inner layer clip 29E and the second outer layer clip 29F have different orientations.

The control unit 94 of the yarn splicing device 9A according to the second modification controls the suction nozzle 614, the arm unit 612, and the splicer 66 to perform a yarn splicing process including a first threading operation, a second threading operation, a first set operation, a second set operation, and a yarn splicing operation (connection operation).

The first threading operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn supply package P12) is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the first outer layer side clip 29D. The second threading operation in the first scene is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the second inner layer side clip 29E. Note that both the first threading operation and the second threading operation are performed in the first scene.

The first set operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn supply package P11 by the suction nozzle 614 and moving the suction nozzle 614 so that the first yarn end Y1 of the first yarn supply package P11 is set in the yarn joining mechanism 64 by the arm portion 612. The second set operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn supply package P12 by the suction nozzle 614 and moving the suction nozzle 614 so that the second yarn end Y2 of the second yarn supply package P12 is set in the yarn joining mechanism 64 by the arm portion 612. The yarn joining operation in the first scene is an operation of connecting the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12.

The first threading operation in the second scene (when the yarn Y is unwound from the outer layer side of the first yarn supply package P11) is an operation in which the suction nozzle 614 holds the second yarn end Y2 of the first yarn supply package P11 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the first yarn supply package P11 at the first inner layer side clip 29C. The second threading operation in the second scene is an operation in which the suction nozzle 614 holds the first yarn end Y1 of the second yarn supply package P12 and moves the suction nozzle 614 so that the arm portion 612 holds the yarn Y of the second yarn supply package P12 at the second outer layer side clip 29F. Note that in the second scene, both the first threading operation and the second threading operation are performed.

The first set operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn supply package P11 by the suction nozzle 614 and moving the suction nozzle 614 so that the second yarn end Y2 of the first yarn supply package P11 is set in the yarn joining mechanism 64 by the arm portion 612. The second set operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn supply package P12 by the suction nozzle 614 and moving the suction nozzle 614 so that the first yarn end Y1 of the second yarn supply package P12 is set in the yarn joining mechanism 64 by the arm portion 612. The yarn joining operation in the second scene is an operation of connecting the second yarn end Y2 of the first yarn supply package P11 and the first yarn end Y1 of the second yarn supply package P12.

Even if the configuration includes a first inner layer clip 29C, a first outer layer clip 29D, a second inner layer clip 29E, and a second outer layer clip 29F, only one of the first threading operation and the second threading operation may be performed in each of the first and second scenes.

The following describes in detail a series of operations including the yarn joining process and the threading process in the yarn joining device 9A using Figures 21 and 22. Here, as in the above embodiment, an example will be described in which the yarn joining device 60 joins the first yarn end Y1 of the first yarn supply package P11 to the second yarn end Y2 of the second yarn supply package P12 when the yarn Y is unwound from the outer layer side of the second yarn supply package P12 (in the first scene described above).

As in the above embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn supply package P11 and the second yarn supply package P12) to a position where the suction nozzle 614 can capture the first yarn end Y1 of the first yarn supply package P11 and the second yarn end Y2 of the second yarn supply package P12 (step S41 in FIG. 21). The control unit 94 starts the suction gun 611 (step S42 in FIG. 21). This enables the suction gun 611 to suction and hold the yarn Y at the suction nozzle 614. The control unit 94 controls the arm unit 612 to capture (hold) the first yarn end Y1 of the first yarn supply package P11 at the suction nozzle 614 (step S43 in FIG. 21). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first outer layer clip 29D as shown in FIG. 22(A), and hooks the yarn Y of the first yarn supply package P11 onto the first outer layer clip 29D (step S44 in FIG. 21: first yarn hooking operation).

Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the first yarn supply package P11 to the first guide mechanism 67 while the yarn Y of the first yarn supply package P11 is hooked on the first outer layer clip 29D, and hooks the yarn Y of the first yarn supply package P11 on the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the rotation amount (feed amount) of the first yarn supply package P11 and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the first yarn end Y1 of the first yarn supply package P11 to the yarn joining mechanism 64 (step S45 in FIG. 21: first set operation).

Next, the control unit 94 causes the suction nozzle 614 to capture (hold) the second yarn end Y2 of the second yarn supply package P12 (step S46 in FIG. 21). Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second inner layer clip 29E and hook the yarn Y of the second yarn supply package P12 onto the second inner layer clip 29E (step S47 in FIG. 21: second yarn hooking operation).

Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the second yarn supply package P12 to the second guide mechanism 68 while the yarn Y of the second yarn supply package P12 is hooked on the second inner layer clip 29E, and hooks the yarn Y of the second yarn supply package P12 on the second guide mechanism 68. Based on the detection result of the potentiometer provided on the second guide mechanism 68, the control unit 94 adjusts the rotation amount (feed amount) of the second yarn supply package P12 and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the second yarn supply package P12 to the yarn joining mechanism 64 (step S48 in FIG. 21: second set operation). The subsequent processing (steps S49 to S52 in FIG. 21) is the same as steps S8 to S11 in FIG. 12 in the above embodiment, so a description of it will be omitted here.

When the yarn Y is being unwound from the outer layer side of the first yarn supply package P11 (when the yarn Y is being supplied to the processing section 3 from the outer layer side of the first yarn supply package P11) (second scene), the yarn joining device 60 joins the first yarn end Y1 of the second yarn supply package P12 to the second yarn end Y2 of the first yarn supply package P11.

Specifically, the control unit 94 controls the arm unit 612 to capture (hold) the second yarn end Y2 of the first yarn supply package P11 at the suction nozzle 614. Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the first inner layer clip 29C as shown in FIG. 22(B), and hook the yarn Y of the first yarn supply package P11 onto the first inner layer clip 29C (first yarn hooking operation).

Next, with the yarn Y of the first yarn supply package P11 hooked on the first inner layer clip 29C, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the second yarn end Y2 of the first yarn supply package P11 to the first guide mechanism 67, and hooks the yarn Y of the first yarn supply package P11 to the first guide mechanism 67. Based on the detection result of the potentiometer provided on the first guide mechanism 67, the control unit 94 adjusts the rotation amount (feed amount) of the first yarn supply package P11 and pulls out the yarn Y from the first yarn supply package P11 with a predetermined tension. Furthermore, with the yarn Y of the first yarn supply package P11 hooked on the first guide mechanism 67, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the second yarn end Y2 of the first yarn supply package P11 to the yarn joining mechanism 64 (first set operation).

Next, the control unit 94 causes the suction nozzle 614 to capture (hold) the first yarn end Y1 of the second yarn supply package P12. Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the second outer layer clip 29F and hook the yarn Y of the second yarn supply package P12 onto the second outer layer clip 29F (second yarn hooking operation).

Next, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 holding the first yarn end Y1 of the second yarn supply package P12 to the second guide mechanism 68 while the yarn Y of the second yarn supply package P12 is hooked on the second outer layer clip 29F, and hooks the yarn Y of the second yarn supply package P12 on the second guide mechanism 68. Based on the detection result of the potentiometer provided on the second guide mechanism 68, the control unit 94 adjusts the rotation amount (feed amount) of the second yarn supply package P12 and pulls out the yarn Y from the second yarn supply package P12 with a predetermined tension. Furthermore, with the yarn Y of the second yarn supply package P12 hooked on the second guide mechanism 68, the control unit 94 controls the arm unit 612 to move the suction nozzle 614 to the yarn joining mechanism 64, and sets (guides) the first yarn end Y1 of the second yarn supply package P12 to the yarn joining mechanism 64 (second set operation). From this point on, the process of removing slack from the thread Y is as described above, so we will not repeat the explanation.

In the yarn splicing device 9A and yarn supplying device 100 according to the second modification, clips (first inner layer clip 29C, first outer layer clip 29D, second inner layer clip 29E, and second outer layer clip 29F) are provided corresponding to the inner layer yarn Y of the first yarn supplying package P11, the outer layer yarn Y of the first yarn supplying package P11, the inner layer yarn Y of the second yarn supplying package P12, and the outer layer yarn Y of the second yarn supplying package P12, respectively. This allows each clip to be provided in a more appropriate position and orientation. As a result, the accuracy and stability of threading at each clip can be further improved.

(Other Modifications)
The above embodiment and modified example of the creel stand 20 have been described using an example in which the clip 29 is positioned in the center of a pair of pegs 25, but the clip 29 may also be positioned closer to one of the pair of pegs 25.

In the above embodiment and modified example of the yarn splicing device 9A, an example has been described in which the yarn Y is engaged with one engagement part in one threading operation, but the yarn Y may be engaged with multiple engagement parts in one threading operation.

In the above embodiment and modified example, the suction gun 611 having the suction nozzle 614 and the hook portion 615 is used as the threading mechanism 61 that guides the yarn Y to each clip 29, 29A to 29F and guides the yarn Y to the yarn joining mechanism 64. However, the hook portion 615 does not have to be provided. In this case, instead of moving the hook portion 615 to move the spliced yarn Y out of the yarn joining device 60, the spliced yarn Y may be moved out of the yarn joining device 60 by moving the yarn joining device 60 backward.

In the above embodiment and modified example, the control unit 94, which controls the traveling unit 90, the lifting unit 91, the holding unit 92, and the replacement unit 93 of the package replacement device 9, controls the yarn joining device 60. However, the present invention is not limited to this. The control unit 94 may be provided exclusively for controlling the yarn joining device 60. Furthermore, the control unit 94 does not have to be provided in the package replacement device 9, but may be provided in a position away from the package replacement device 9 so as to be able to communicate with the package replacement device 9 via wired or wireless communication.

The yarn splicing device 9A of the above embodiment and modified example has been described as having the first rotation mechanism 62 and the second rotation mechanism 63, but a yarn splicing device 60 that does not have the first rotation mechanism 62 and the second rotation mechanism 63 may be provided. In this case, for example, in the yarn splicing device 9A of the above embodiment, the operation of rotating the yarn supply package P1 (steps S1, S5, S7, and S11 in FIG. 12, etc.) is omitted. Similarly, in the modified example, in the yarn splicing device 9A of the above embodiment, the operation of rotating the yarn supply package P1 is omitted.

In the above embodiment and modified examples, the false twisting machine 1 has been described as an example of a yarn processing device, but the present invention is not limited to this. In other words, the processing unit 3 has been described as an example of a device that performs twisting (false twisting), but the present invention may also be applied to a device that performs non-twisting (air jet) yarn processing.

1... false twisting machine, 20... creel stand (yarn supply stand), 25... peg (first mounting part, second mounting part), 29... clip (locking part), 29A... first clip (locking part, first locking part), 29B... second clip (locking part, second locking part), 29C... first inner layer clip (locking part, first locking part), 29D... first outer layer clip (locking part, first locking part), 29E... second inner layer clip (locking part, second locking part), 29F... second Outer layer clip (locking part/second locking part), 60...yarn splicing device, 611...suction gun, 612...arm part (moving part), 613...suction pipe, 614...suction nozzle (suction holding part), 64...yarn splicing mechanism (connecting part), 66...splice, 9...package changing device, 9A...yarn splicing device, 94...control part, 100...yarn feeding device, P1...yarn feeding package, P11...first yarn feeding package, P12...second yarn feeding package, Y...yarn.

Claims (6)

A yarn splicing device for connecting a yarn end of a first yarn supply package and a yarn end of a second yarn supply package attached to a yarn supply stand and for locking the connected yarn in at least one locking portion provided on the yarn supply stand, comprising:
a suction holding unit that holds the yarn by sucking the yarn;
A moving unit that moves the suction and hold unit;
a connection portion that connects a yarn end of the first yarn supply package and a yarn end of the second yarn supply package;
a control unit that controls the suction and hold unit, the movement unit, and the connection unit,
The control unit is
a first set operation in which the suction holding unit holds the yarn end of the first yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the first yarn supply package is set in the connection unit;
a second set operation in which the suction holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the second yarn supply package is set in the connection unit;
a connecting operation of connecting a yarn end of the first yarn supply package and a yarn end of the second yarn supply package by the connecting portion after the first set operation and the second set operation;
and controlling the suction and holding unit, the moving unit, and the connecting unit so as to perform a yarn joining process including
a first yarn threading operation, before the first set operation, in which the suction and holding unit holds a yarn end of the first yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the first yarn supply package is locked to the locking unit;
a second yarn threading operation in which, before the second set operation, the suction and holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the second yarn supply package is locked to the locking unit;
and controlling the suction and holding unit and the moving unit so as to perform a yarn threading process including at least one of the operations above. The locking portion includes a first locking portion and a second locking portion,
the first yarn hooking operation is an operation of moving the suction and hold unit so that the yarn of the first yarn supply package is hooked to the first hooking unit,
the second yarn threading operation is an operation of moving the suction and hold portion so that the yarn of the second yarn supply package is locked to the second locking portion.
The yarn splicing device according to claim 1. The first fastening portion includes a first inner layer side fastening portion and a first outer layer side fastening portion,
The second fastening portion includes a second inner layer side fastening portion and a second outer layer side fastening portion,
the first yarn threading operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding a yarn end on an inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first inner layer side locking unit by the moving unit,
the second yarn threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the outer layer side yarn end of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second outer layer side locking unit by the moving unit,
the first setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the first yarn supply package is set in the connection unit,
the second setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the second yarn supply package is set in the connection unit,
the connecting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of connecting a yarn end on an inner layer side of the first yarn supply package to a yarn end on an outer layer side of the second yarn supply package,
the first yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first outer layer side locking unit by the moving unit,
the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second inner layer side locking unit by the moving unit,
the first setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the first yarn supply package is set in the connection unit,
the second setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection unit,
3. The yarn splicing device according to claim 2, wherein the connecting operation when the yarn is unwound from the outer layer side of the second yarn supplying package is an operation of connecting a yarn end on the outer layer side of the first yarn supplying package to a yarn end on an inner layer side of the second yarn supplying package. a yarn supply stand including a first mounting portion to which a first yarn supply package is mounted, a second mounting portion to which a second yarn supply package is mounted, and a locking portion to which the yarn is locked;
a yarn splicing device for connecting a yarn end of the first yarn supplying package attached to the first attachment section and a yarn end of the second yarn supplying package attached to the second attachment section and locking the connected yarn to the locking section,
The locking portion is
at least one first retaining portion for retaining a yarn drawn from the first yarn supply package;
at least one second retaining portion for retaining the yarn drawn from the second yarn supply package;
The yarn splicing processing device includes:
a suction holding unit that holds the yarn by sucking the yarn;
A moving unit that moves the suction and hold unit;
a connection portion that connects a yarn end of the first yarn supply package and a yarn end of the second yarn supply package;
a control unit that controls the connection unit, the suction and hold unit, and the movement unit,
The control unit is
a first set operation in which the suction holding unit holds the yarn end of the first yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the first yarn supply package is set in the connection unit;
a second set operation in which the suction holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction holding unit so that the yarn end of the second yarn supply package is set in the connection unit;
a connecting operation of connecting a yarn end of the first yarn supply package and a yarn end of the second yarn supply package by the connecting portion after the first set operation and the second set operation;
and controlling the suction and holding unit, the moving unit, and the connecting unit so as to perform a yarn joining process including
a first yarn threading operation, before the first set operation, in which the suction and holding unit holds a yarn end of the first yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the first yarn supply package is locked to the first locking unit;
a second yarn threading operation in which, before the second set operation, the suction and holding unit holds the yarn end of the second yarn supply package, and the moving unit moves the suction and holding unit so that the yarn of the second yarn supply package is locked to the second locking unit;
the yarn supplying device controls the suction and hold unit and the moving unit to perform a yarn threading process including at least one of the operations above. the first engaging portion is disposed closer to the first mounting portion than a center between the first mounting portion and the second mounting portion,
The yarn feeding device according to claim 4 , wherein the second locking portion is disposed closer to the second mounting portion than a center between the first mounting portion and the second mounting portion. The first fastening portion includes a first inner layer side fastening portion and a first outer layer side fastening portion,
The second fastening portion includes a second inner layer side fastening portion and a second outer layer side fastening portion,
the first yarn threading operation when a yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding a yarn end on an inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first inner layer side locking unit by the moving unit,
the second yarn threading operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the outer layer side yarn end of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second outer layer side locking unit by the moving unit,
the first setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the inner layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the first yarn supply package is set in the connection unit,
the second setting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of holding the yarn end on the outer layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the second yarn supply package is set in the connection unit,
the connecting operation when the yarn is unwound from the outer layer side of the first yarn supply package is an operation of connecting a yarn end on an inner layer side of the first yarn supply package to a yarn end on an outer layer side of the second yarn supply package,
the first yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the outer layer side yarn end of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the first yarn supply package is locked by the first outer layer side locking unit by the moving unit,
the second yarn threading operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit so that the yarn of the second yarn supply package is locked by the second inner layer side locking unit by the moving unit,
the first setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the outer layer side of the first yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the outer layer side of the first yarn supply package is set in the connection unit,
the second setting operation when the yarn is unwound from the outer layer side of the second yarn supply package is an operation of holding the yarn end on the inner layer side of the second yarn supply package by the suction and holding unit, and moving the suction and holding unit by the moving unit so that the yarn end on the inner layer side of the second yarn supply package is set to the connection unit,
6. The yarn feeding device according to claim 4, wherein the connecting operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of connecting a yarn end on the outer layer side of the first yarn feeding package to a yarn end on an inner layer side of the second yarn feeding package.

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