JP3609575B2 - Automatic winder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic winder that forms a take-up package by winding a yarn on a take-up bobbin (including a packaged shape) such as a fine spinning bobbin and a take-up tube.
[0002]
[Prior art]
Conventional automatic winders include those shown in FIGS. 9 and 10, which will be described below. In FIG. 9, the automatic winder 1 includes a number of winding units 2 installed in parallel, a doffing device 3, a discharge conveyor 19 for discharging the package P doffed by the doffing device 3, and the devices 2, 3 And a control device 49 composed of a CPU for controlling the operation of the above. As shown in FIG. 10, the winding unit 2 is a unit that winds a yarn Y wound around a plurality or one yarn feeding bobbin 4 around a winding tube 5 to form one winding package P. It is installed in parallel on the machine of the automatic winder. The winding unit 2 includes a cradle 6 that rotatably grips the winding tube 5, a drum 7 that rotates the winding tube 5 gripped by the cradle 6, and a yarn cutting unit 16A that detects yarn defects. The clearer 16, the yarn joining device 15 that joins the cut yarn Y, the yarn trap 17 that sucks and captures the cut yarn end Y of the yarn feeding bobbin 4, and the cut yarn end Y from the yarn trap 17 A relay pipe 20 that takes up and introduces the yarn to the yarn joining device 15 and a suction arm 21 that sucks and holds the yarn Y that has been cut and wound on the package P and introduces it into the yarn joining device 15 are provided. Further, the doffing device 3 travels directly above each winding unit 2 along a rail 26 installed at the upper part of the automatic winder 1, and the doffing operation of the package P and the winding provided at the upper part of the automatic winder 1 are carried out. The take-up tube 5 is supplied from the tube storage unit 37 to the cradle 6 and is gripped.
[0003]
In the automatic winder 1 configured as described above, the winding unit 2 sequentially winds up the package P, and in order to wind up the package P of other types, the lot change of the yarn feeding bobbin 4 (variety change such as yarn type and count) ), After the doffing operation of the full package P by the operator, the yarn of the yarn feeding bobbin 4 of another type for the lot change automatically supplied to the winding unit 2 is blown up to obtain the yarn. The trap 17 is sucked and captured. Then, after the operator pulls out the yarn end of the yarn feeding bobbin 4 of another type sucked and captured by the yarn trap 17 and winds it on the winding tube 5, the operator grips the winding tube 5 with the cradle 6, and removes the yarn defect. A yarn is inserted into the yarn clearer 16 to be detected.
[0004]
[Problems to be solved by the invention]
However, in the conventional automatic winder, since a new yarn supplying bobbin 4 was performed Rottochi E Nji must wear the winding tube 5 by hand, that a lot of time and effort consuming during lot change There was a problem.
[0005]
The present invention has been made in order to solve this problem. For example, it is an object of the present invention to provide an automatic winder capable of automatically starting winding of a yarn without much trouble at the time of lot change of a yarn feeding bobbin.
[0006]
[Means for Solving the Problems]
The automatic winder according to claim 1, which solves the above problem, travels along a plurality of winding units for winding the yarn of the yarn supplying bobbin around the winding tube, and the winding unit is generated. A doffing device that performs full doffing to the winding unit, installation of an empty winding tube, and attachment of a yarn end to the empty winding tube in response to a request signal for the doffing device to perform, and these winding units And a control device for controlling the operation of the doffing device, wherein the winding unit has a yarn end catching means for catching a yarn end of a newly supplied yarn feeding bobbin, The yarn end catching means has a yarn pulling means for gripping and pulling up the captured yarn end, and the yarn pulling means is attached to an empty take-up pipe supported by the take-up pipe support member of the take-up unit. The control device is configured to perform an operation of attaching a yarn of Has selectable winding start mode by the operation switch or the program for causing the automatic start by the winding start mode is selected, the yarn of the yarn feeding bobbin to the winding unit is newly supplied When the end is caught by the yarn end catching means, an operation for generating a signal requesting the doffing device to the winding unit in the yarn end catching state and attaching the yarn of the yarn feeding bobbin to the empty winding tube Is made to rotate the winding tube .
Thus, it is possible to automatically start winding, and for example , it is possible to change the type of the yarn feeding bobbin without trouble.
[0007]
An automatic winder according to a second aspect is the automatic winder according to the first aspect, wherein the doffing device includes a chucker that transports the winding tube to a winding tube support member of the winding unit, and the winding start mode is selected. Thus, the operation of the yarn pulling means and the operation of the chucker are performed in conjunction with each other.
[0008]
Automatic winder according to claim 3, in claim 1, an operation switch for selecting the winding start mode is provided.
Thus, by operating the operation switch, the winding start mode can be selected at an appropriate time, and automatic winding can be started in an automatic winder having a plurality of winding units.
[0009]
According to a fourth aspect of the present invention, there is provided the automatic winder according to any one of the first to third aspects, wherein the doffing device is provided with insertion means for inserting the yarn pulled up by the yarn lifting means into monitoring means for monitoring yarn defects. It is what. .
Thereby, even if the yarn is pulled up directly to the winding tube by the yarn pulling means, it can be inserted into the monitoring means by the yarn inserting means.
[0010]
In the doffing apparatus according to claim 5 , in any one of claims 1 to 3 , the doffing apparatus is provided with detection means for detecting an obstacle on the winding unit side, and the detection means detects the obstacle. Sometimes, the operation of the yarn lifting means is stopped.
Thus, when the detecting means detects an obstacle on the yarn feeding bobbin side, the yarn pulling means is not operated, so that interference between the yarn pulling means and the obstacle can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an automatic winder according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. 1 to 8, the same reference numerals as those in FIGS. 9 and 10 of the prior art are the same members, and detailed description thereof will be omitted.
[0012]
In FIG. 1 and FIG. 2, a number of winding units 2 installed in parallel in the automatic winder 1 are wound by winding a plurality of or one yarn Y wound around a yarn feeding bobbin 4 around a winding tube 5. Package P. The winding unit 2 includes a clad 6 that grips the winding tube 5 in a rotatable manner, and a drum 7 that rotates the winding tube 5 gripped by the cradle 6. The cradle 6 can be turned toward the drum 7 or vice versa, and is provided on the winding unit 2 so as to be swingable in the axial direction of the drum 7, and a bobbin holder 8 for holding the winding tube 5 is provided. Have. The drum 7 is connected to a drive motor 10 that is driven and controlled by the unit controller 9 . Further, on the yarn feeding bobbin 4 side of the winding unit 2, the yarn joining device 15 that joins the yarn Y, the yarn clearer 16 that has a yarn cutting portion 16A and detects a yarn defect, and the yarn feeding bobbin 4 are cut. A yarn trap 17 (yarn end catching means) for sucking and catching the yarn end Y, a relay pipe 20 (see FIG. 10) for taking the yarn Y from the yarn trap 17 and introducing it to the yarn splicing device 15, and winding it on the package P And a suction arm 21 (see FIG. 10) for sucking and gripping the end of the yarn Y thus introduced and introducing it into the yarn joining device 15. Reference numeral 18 denotes a package guide that guides the full package P from the drum 7 to the discharge conveyor 19 disposed behind the cradle 6.
[0013]
The doffing device 3 provided in the automatic winder 1 travels directly above the winding unit 2 along the rail 26 arranged on the frame 25, and when the package P of the winding unit 2 becomes full, the predetermined position is reached. It stops at a doffing operation. That is, the winding unit 2 is provided with a doffing request lamp LP that is turned on when the package P becomes full and requests the doffing device 3, and the doffing device 3 detects the lighting of the lamp LP. Then, it stops at the lamp lighting unit and performs the doffing operation. The doffing device 3 includes a yarn gripping device (yarn pulling means) 27 having a yarn cutting and gripping portion 27A that can extend to the yarn trap 17, an opener 28 for turning and opening and closing the cradle 6, and a yarn Y being gripped by the cradle 6. And a yarn assisting device 29 that guides toward the winding tube 5. The yarn gripping device 27 extends and contracts the yarn cutting and gripping portion 27A using an air cylinder, and cuts and holds the yarn Y by the thread cutting and gripping portion 27A in conjunction with the expansion and contraction. The yarn gripping device 27 is provided on the upper part of the doffing device 3 so as to be rotatable in the radial direction of the drum 7, and the yarn Y is pulled up to the upper side of the drum 7 and is rotated so as to be interposed between the cradle 6. Note that the mechanism for expanding and contracting the yarn cutting and gripping portion 27A of the yarn gripping device 27 is not limited to an air cylinder, and may be a mechanical slide.
[0014]
As shown in FIG. 3, the opener 28 of the doffing device 3 has an open lever 31 fixed to a rotary shaft 30 (also shown in FIG. 1) that protrudes in parallel with the drum 7 from the side of the doffing device 3. An open hand 33 that contacts the cradle lever 32 is provided at the tip of the open lever 31. The open lever 31 is swingable in the axial direction of the drum 7 and extends toward the cradle 6, and the turning locus of the cradle lever 32 that is turned integrally with the cradle 6 on the turning locus a of the rotating open hand 33. It is provided to cross b. The opener 28 is rotated away from the drum 7 by turning the cradle 6 in a state where the open hand 33 is in contact with the cradle lever 32, and the take-up tube 5 is rotated around the cradle 6 by rotating toward the drum 7. Rotate to a position sufficient to contact 7. Further, the opener 28 opens and closes the cradle 6 via the cradle lever 32 by swinging in the drum axis direction, thereby enabling the doffing of the package P and the mounting of the winding tube 5.
[0015]
As shown in FIGS. 4 and 5, the yarn spooling device 29 of the doffing device 3 is disposed on the yarn entering side of the drum 7, and takes up the yarn Y pulled up by the yarn gripping device 27 and makes contact with the drum 7. A yarn lever 34 that moves toward the large diameter end 5 </ b> A side of the tube 5, and a bunch guide 35 that guides the yarn Y to the bunch winding position V of the winding tube 5 with the yarn stopper lever 34. The yarn holding lever 34 can be moved to the winding tube 5 side by a link mechanism 36, and has a yarn hooking portion 34A on the tip side. Then, after the yarn catching lever 34 is rotated toward the take-up tube 5 to hook the yarn Y by the yarn hooking portion 34A, the yarn hooking portion 34A is moved in parallel in the axial direction of the drum 7 and moved to the bunch guide 35. To do. The bunch guide 35 is provided on the cradle 6, and has a yarn guide portion 35 </ b> A that projects to the yarn entering side of the drum 7 and guides the yarn Y at the bunch winding position V of the winding tube 5.
[0016]
1 and 2, the doffing device 3 includes a chucker 38 (also shown in FIG. 3) that grips the take-up tube 5 from the take-up tube storage portion 37 fixed to the frame 25 and carries it to the drum 7. , A yarn gripping device (yarn pulling means) 27, a yarn insertion lever 39 for inserting the yarn Y pulled up by the yarn clearer 16, and a detection sensor 40 for detecting an operator on the yarn feeding bobbin 4 side of the winding unit 2 and the like. I have. As shown in FIG. 3, the yarn insertion lever 39 is rotatably supported on the side part of the doffing device 3 and extends to the yarn clearer 16. At the tip of the thread insertion lever 39, there is a thread insertion part 39A that protrudes from the yarn clearer 16 and can touch the thread Y. Then, as shown in FIG. 6, the thread insertion lever 39 inserts the thread Y into the slit 16B of the yarn clearer 16 over the presser plate 16C when the thread insertion portion 39A touches the pulled thread Y. . As a result, when the yarn insertion lever 39 for inserting the yarn Y into the slit 16 of the yarn clearer 16 is provided, the yarn Y of the yarn supplying bobbin 4 is removed from the yarn clearer even if the presser plate 16C for preventing yarn jumping is provided. 16 can be securely inserted. As shown in FIG. 3, the detection sensor 40 has a detection area c that widens toward the yarn feeding bobbin 4 of the winding unit 2, and is connected to a control device 49 provided at the machine base end of the automatic winder 1. Has been.
[0017]
In FIG. 7, the control device 49 includes a unit control unit 9 on the winding unit side, a doffing control unit 41 on the doffing device side, and a management controller 50 having a lot change mode (product type change mode). Yes. The lot change mode is a mode that automatically performs lot change to replace the yarn feeding bobbin 4 with a bobbin wound with different yarns (yarns with different materials, thickness, twist number, etc.). There are a winding end mode for ending winding and a winding start mode for starting winding of a new lot.
[0018]
Switching from the normal winding mode to the lot change can be performed by a program, or by the manual switch SW provided in the control device 49 or the manual switch BN provided in each winding unit 2. The manual switch SW acts on the entire automatic winder 1, and the manual switch BN acts on each winding unit 2. Each switch SW, BN can also select a winding end mode and a winding start mode. When the winding end mode is selected, for example, whether or not the winding unit 2 continues winding is controlled so that the production amount of the package P becomes a set amount. Further, the completed package P is discharged from the automatic winder 1 and the old bobbin is removed. When the winding start mode is selected, for example, after a new type of yarn feeding bobbin 4 is supplied to the automatic winder 1 (each winding unit 1), the yarn end of the supplied yarn feeding bobbin 4 becomes a yarn trap. Then, the doffing request lamp LP is turned on, and the doffing device 3 arrives at the winding unit 2 whose lamp LP is lit. The doffing device 3 supplies the empty winding tube 5 to the cradle 6. Then, the yarn end of the yarn feeding bobbin 4 is attached to the winding tube 5. In the present embodiment, when the manual switch BN is continuously pressed twice, the doffing request lamp LP of the winding unit 2 is turned on.
[0019]
The unit controller 9 controls the drive motor 10 that rotates forward and backward based on ON / OFF of the winding switch means 51 and the splicer monitor mode of the management controller 50 to rotate the drum 7. As shown in FIGS. 2 and 3, the winding switch means 51 includes an electromagnet 51A that is rotatably provided in the doffing device 3, and a reed switch 51B that is provided on the front surface of each winding unit 2. Excitation of the electromagnet 51A is detected by the reed switch 51B. Then, the unit controller 9 controls the drive motor 10 in accordance with the number of times of excitation of the electromagnet 51A detected by the reed switch 51B to rotate the drum 7 forward or backward at low speed or high speed (clockwise α in FIG. 3). In the splicer monitor mode, the drive motor 10 is rotated in the reverse direction (rotation in the counterclockwise direction β in FIG. 3). The doffing control unit 41 controls the operation of the yarn gripping device 27, the opener 28, the yarn insertion lever 39, and the like based on the lot change mode and the output of the detection sensor 40, in addition to the travel control of the doffing device 3. The excitation of the take-off switch means 51 to the electromagnet 51A is also controlled.
[0020]
Next, the lot change procedure of the yarn feeding bobbin 4 by the automatic winder 1 will be described based on FIG. 7 and FIG.
[0021]
When a command for the winding end mode is output from the management controller 50, the unit controller 9 controls the operation of the winding unit 2 in order to change the lot from the type A to the yarn feeding bobbin 4 of the type B. When the package P of each winding unit 2 becomes full, the unit controller 9 operates the yarn cutting unit 16 of the yarn clearer 16 to cut the yarn Y of the type A as shown in FIG. Then, the rotation of the drum 7 is stopped. The yarn end on the package P side is wound around the package P by inertial rotation of the package P (shown in FIG. 8B). Each winding unit 2 does not light the doffing request lamp LP even when it is full. When the predetermined number of full tubes (the number of doffs) is reached, the winding end mode is completed.
[0022]
In this embodiment, the operator removes the yarn feed bobbin 4 of the old product type A from the automatic winder 1 and pays out the completed package P from the automatic winder 1. Thereafter, replacement of the new and old varieties of the winding tube 5 and supply of the new type B yarn supply bobbin 4 are performed, and the operation of the automatic winder 1 is resumed. The new type B yarn supplying bobbin 4 of each winding unit 2 is automatically supplied, and the yarn end of the yarn supplying bobbin 4 is captured by the yarn trap 17 (shown in FIG. 8C). In this state, the management controller 50 outputs a winding start mode command. Specifically, the manual switch BN of each winding unit 2 is pressed twice in succession, a start mode command is output from the management controller 50 to the unit control unit 9, and the doffing request lamp LP of the winding unit 2 is turned on. Light up.
[0023]
The doffing control unit 41 travels the doffing device 3 and stops just above the package P of the winding unit 2 where the doffing request lamp LP is lit, and rotates the opener 28 shown in FIG. 3 toward the drum 7. As a result, the cradle 6 is swung to a position sufficient for the winding tube 5 to contact the drum 7 and the cradle 6 is opened.
[0024]
Thereafter, if the detection sensor 40 shown in FIG. 3 does not detect an obstacle on the yarn feeding bobbin 4 side, the doffing control unit 41 operates the yarn gripping device 27 as shown in FIG. The yarn Y of the yarn feeding bobbin 4 that has been sucked and captured by the cutting is gripped and pulled. Then, the yarn gripping device 27 is raised and turned to pull up the yarn Y of the product type B and insert it between the cradle 6 and abut against the slit 16B of the yarn clearer 16 (shown in FIG. 6). When the detection sensor 40 detects an obstacle, the thread gripping device 27 is not operated. In a state where the yarn Y of the product type B is in contact with the yarn clearer 16, the yarn insertion portion 39A touches the yarn Y of the product type B by rotating the yarn insertion lever 39 shown in FIG. It is inserted into the slit 16B of the yarn clearer 16 (shown in FIG. 6).
[0025]
After inserting the yarn Y of the type B into the yarn clearer 16, the yarn catching lever 34 shown in FIG. 4 is rotated and moved in parallel toward the drum 7, so that the yarn Y is hooked by the yarn hooking portion 34A and the bunch guide 35 is moved. To guide the bunch winding position V (shown in FIGS. 4 and 5). After guiding the yarn Y at the bunch winding position V, with chucker 38 shown in FIG. 3 grips the winding tube 5 from winding tube accommodating part 37 is et rotated toward the drum 7, the further drum 7 The winding tube 5 is brought into contact with the drum 7 between the cradle 6 opened by the rotation of. In this state, when the swing of the opener 28 shown in FIG. 3 is released and the cradle 6 is closed, the large-diameter end 5A and the small-diameter end 5B of the winding tube 5 are rotatably held by the bobbin holder 8 of the cradle 6. As a result, the yarn Y of the product B crossing the inside of the cradle 6 is sandwiched between the large diameter end 5A of the winding tube 5 and the bobbin holder 8 as shown in FIG. When the winding tube 5 and the yarn Y of the type B are gripped by the cradle 6, the chucker 38 and the thread insertion lever 39 shown in FIG. 3 are retracted to the doffing device 3, and the thread gripping device 27 grips the thread Y. To release.
[0026]
When a series of operations of attaching the take-up tube 5 to the cradle 6 and attaching the yarn end of the yarn feeding bobbin 4 to the take-up tube 5 is completed, the doffing controller 41 excites the electromagnet 51A again to reed the switch 51B. To detect. The unit controller 9 that receives the output of the reed switch 51B drives the drive motor 10 to rotate the drum 9 at a low speed (rotation in the clockwise direction α in FIG. 3), thereby moving the winding tube 5 in the direction opposite to that of the drum 7. The yarn Y of the type B is bunch wound at the bunch winding position V after being rotated at a low speed. At this time, the yarn Y is wound while being guided by the yarn lever 34 and the bunch guide 35 shown in FIGS. 4 and 5.
[0027]
After carrying out the bunch winding, by retracting the thread lever 34 shown in FIG. 4 to the doffing device 3, the yarn Y of the product type B is released to the drum 7, and the doffing control unit 41 excites the electromagnet 51A again. This is detected by the reed switch 51B. The unit controller 9 that receives the output of the reed switch 51B controls the drive motor 10 to rotate the drum 7 continuously from a low speed to a high speed (rotation in the clockwise direction α in FIG. 3). 7 is rotated at a high speed in the opposite direction to 7 to start winding the yarn Y of the kind B traversed by the drum 7 at a high speed. The operation as described above is performed for each winding unit 2 to automatically start winding the new product type B yarn Y.
[0028]
【The invention's effect】
In the automatic winder according to the first and second aspects of the present invention, the doffing device winds the yarn end of the yarn supplying bobbin of the winding unit by selecting the winding start mode for automatically starting winding. Since it is attached to the intake tube, it is possible to automatically start winding. Therefore, for example , it is possible to change the type of the yarn feeding bobbin without trouble. In addition, since a plurality of winding units generate a signal for requesting a doffing device by selecting a winding start mode, automatic winding can be started in an automatic winder having a plurality of winding units. .
[Brief description of the drawings]
FIG. 1 is a front view of a winding unit and a doffing device of an automatic winder.
FIG. 2 is a side view of a winding unit and a doffing device of an automatic winder.
FIG. 3 is a side view showing configurations of an opener, a thread insertion lever, and a detection sensor of the doffing device.
4 is a view taken along the line CC of FIG. 1, showing the configuration of the yarn raising device of the doffing device.
5 is a cross-sectional view taken along the line DD of FIG.
6 is a cross-sectional view taken along the line EE in FIG. 3;
FIG. 7 is a block diagram showing a controller of an automatic winder.
FIG. 8 is a schematic diagram showing a rod change procedure by an automatic winder.
FIG. 9 is an overall view showing a conventional automatic winder.
FIG. 10 is a diagram showing a configuration of a conventional automatic winder doffing device and a winding unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Automatic winder 2 Winding unit 3 Doffing device 4 Yarn feeding bobbin 5 Winding pipe 6 Cradle 7 Drum 9 Unit controller 16 Yarn clearer (monitoring means)
27 Yarn gripping device (thread pulling means)
38 chucker 39 thread insertion lever (thread insertion means)
40 Detection sensor (detection means)
41 Doffing controller 49 Controller P Package

Claims (5)

A plurality of winding units for winding the yarn of the yarn feeding bobbin around the winding tube, and a doffing device request signal generated by the winding unit that runs along the plurality of winding units, A doffing device that performs full doffing, installation of an empty winding tube, and attachment of a yarn end to the empty winding tube, and a control device that controls the operation of the winding unit and the doffing device. Prepared,
The winding unit has a yarn end catching means for catching a yarn end of a newly supplied yarn feeding bobbin;
The doffing apparatus includes a thread draw on means pulling upwardly to grip the yarn end, wherein the yarn end catching means is captured, empty this thread draw on means is supported by the winding tube supporting member of the winding unit It is configured to perform the operation of attaching the yarn feeding bobbin thread to the winding tube,
The control device has a winding start mode that can be selected by an operation switch or a program for automatically starting winding, and when the winding start mode is selected, the winding unit is newly added. When the yarn end of the supplied yarn feeding bobbin is caught by the yarn end catching means, a signal requesting the doffing device is generated to the winding unit in the yarn end catching state, and the empty winding tube is fed. An automatic winder configured to rotate the winding tube after causing the doffing device to perform the operation of attaching the yarn of the yarn bobbin . The doffing device includes a chucker that transports the winding tube to a winding tube support member of the winding unit, and the operation of the yarn pulling means and the operation of the chucker are selected by selecting the winding start mode. The automatic winder according to claim 1, wherein The automatic winder according to claim 1, further comprising an operation switch for selecting the winding start mode. The automatic winder according to any one of claims 1 to 3, wherein the doffing device is provided with insertion means for inserting the yarn pulled up by the yarn lifting means into monitoring means for monitoring yarn defects. 4. The doffing apparatus according to claim 1, wherein the doffing device is provided with detection means for detecting an obstacle on the take-up unit side, and when the detection means detects an obstacle, the operation of the yarn lifting means is stopped. Automatic winder described in Crab.

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