JPH0366413B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to winding up the slack of both old and new threads tied together in an automatic tip changing device attached to a loom having a shuttle. This invention relates to a thread adjustment device that adjusts the position of a knot in a weft thread.

[Prior Art] Generally, in a type of loom that uses a shuttle, a shuttle containing weft threads is synchronized with the movement and is caused to fly between the upper and lower warp threads while performing a shedding motion that repeatedly divides the warp threads into two groups, upper and lower. By doing so, we manufacture textiles. For example, as shown in FIGS. 2a and 2b, a general shuttle 1 has a generally boat-shaped outer shape, and has a cavity 1a inside for storing a roughly spindle-shaped tip 2 around which a weft 4 is wound. It is provided. A tongue 3 is provided at the rear part of the cavity 1a so as to be rotatable about 90 degrees from a horizontal position to a vertical position. The tip 2 is inserted into the cavity 1 with the tongs 3 inserted into the hole 2a provided on the lower end surface.
It is horizontally inverted and stored in a. The weft yarn 4 is drawn out through a hole 1b provided at the front of the shuttle 1 in order to apply a certain amount of tension to the weft yarn 4.

When the loom is operated with such a configuration, the number of weft yarns 4 in the shuttle 1 decreases as the shuttle 1 moves back and forth. Conventionally, if the weft yarn 4 runs out, the machine must stop operating.
After a predetermined number of weaving operations have been carried out and the remaining amount of weft yarns 4 in the shuttle 1 is running low, a worker standing by the machine manually replaces the weft 2. That is, the weft of the old weft with a small amount remaining is cut and the old weft is removed from the shuttle 1, and a new weft is loaded into the shuttle 1, and the new weft is tied to the old weft by hand.

[Problems to be Solved by the Invention] Since the length of the weft from the already woven cloth to the shuttle 1 is almost constant, weaving can be done by simply tying the new thread 70a and the old thread 70b after replacing the thread. If this were continued, there was a problem in that the knots N of both the old and new yarns would appear repeatedly at predetermined positions during weaving, and could end up in positions where they were continuous in the warp direction, as shown in Part 19. . This means that the properties of the fabric change at specific locations, which is undesirable.

In addition, when tying together old and new threads using a machine, it is necessary to allow for a certain length of thread due to constraints on the working position. Therefore, the part where both the new and old threads are tied, from the tip of the new tip to the hole 1b at the front of the shuttle 1, becomes unnecessarily long after the thread tying operation, and this idle part is attached to each device. The problem was that it was easy to get caught.

Furthermore, after tying the thread, tighten the thread knot N by shuttle 1.
If the thread is left in front of hole 1b, the knot N will pass through hole 1b after the loom starts moving again, but more tension than necessary will be applied to the thread knot N when it passes through hole 1b. In some cases, there was a problem that the thread could break.

[Object of the Invention] To provide a loom that is equipped with an automatic tip changing device and uses a shuttle, and is capable of adjusting the knot position by winding up the slack of both old and new yarns tied by the device. The purpose is to provide a regulating device.

[Means for Solving the Problems] The yarn adjusting device according to the present invention performs weaving by making a shuttle containing a cot around which a weft is wound fly between upper and lower wefts along a shuttle lace. The thread tying device is attached to a loom equipped with a thread tying device for tying both ends of the new and old thread together, and a thread tying device for tying both ends of the old and new threads together and for exchanging the old and new threads at the same time. The adjusting device has a rotating shaft at the center, and a circumferential groove for winding a weft is formed on the outer periphery, and the rotating axis is approximately parallel to the weft pulled out from the shuttle, and the weft and the circumferential groove are a disc-shaped reel installed near the shuttle lace so that the shuttle laces are close to each other; a locking tool that protrudes outward from a circumferential groove of the reel and locks the weft close to the circumferential groove; It is provided on the rotating shaft of the reel, and projects outward from the circumferential groove as the rotating shaft is driven, and by hooking and rotating the thread attached to the locking device, the weft is pulled around the circumference of the reel. It is equipped with a hook for wrapping around the groove.

[Function] Prior to exchanging the old and new cots and binding the new and old wefts by the automatic cot exchange device, the old weft is pulled out and engaged with the locking tool of this device. Next, the rotating shaft is driven and the hook rotates, so that the old weft attached to the hook is hooked and routed. Since the old weft yarn is wound around the circumferential groove of the reel a desired number of times, the length of the old weft yarn from the yarn knot formed after binding the old and new yarns to weaving can be arbitrarily set. Therefore, the positions of the knots during weaving can be appropriately distributed.

[Example] An example of the present invention will be described with reference to the drawings. First, the configuration of the automatic tip exchanger 10 (hereinafter referred to as the exchanger 10) according to the present embodiment, and the outline of its operation and functions will be explained with reference to the overall perspective view and external drawings of FIG. We will explain each component separately.

The loom to which the exchange device 10 of this embodiment is applied is as follows:
Two types of weft yarns 4 are stored in two shuttles 1, 1, and the two shuttles 1, 1 are alternately run on the shuttle lace 12 while moving the shuttle box 11 up and down in synchronization with the shedding movement of the warp yarns. This makes it possible to weave thick cloth for special purposes.

As shown in FIG. 1, a frame stand 13 is installed on the front side of the shuttle race 12. In this figure, the frame stand 13 is shown moved in order to clearly show the configuration and positional relationships of various devices. In reality, as shown by arrow A in the figure, the front side of the frame base 13 in the longitudinal direction is parallel to the shuttle race 12, and as also shown in FIG. but,
It is located at a position substantially opposite to the outer end of the shuttle box 11.

(A) Device for taking out the tip A tip taking out device A is installed on the frame base 13, which moves hands as gripping means in mutually orthogonal directions to take out and transport the tip 2 stored in a predetermined position. There is.

As shown in FIGS. 3 to 5, a frame body 14 is fixedly provided on the upper surface of the frame base 13 along the long side of the frame base 13 located away from the shuttle race 12. As shown in FIGS. Pillar material 14 of frame body 14
Two guide shafts 15, 15 are provided between a and 14a.
are installed and fixed parallel to each other. A drive screw shaft 16 is rotatably installed parallel to the guide shaft 15 between the guide shafts 15, 15, and one end of the screw shaft 16 is connected to one of the pillars 14a.
It is interlocked and connected to a motor M1 fixedly installed on the outside of the motor. An X slider 17 is slidably provided on the guide shaft 15, and the screw shaft 16 is engaged with a nut portion 17a fixed at the center of the X slider 17. Therefore, motor M
1, the X slider 17 can be freely moved in the X direction along the guide shaft 15. Next, a beam 18 is horizontally installed and fixed between the pillars 14a, 14a of the frame 14 at a position below the guide shaft 15. This beam member 18 is made of a channel-shaped member with the groove facing upward, and there is an
A cable carrier 17b is provided to protect the cable led out from the slider 17. Further, within the groove, as shown in FIGS. 3 and 4, a plurality of positioning members 19 are provided at predetermined intervals. Further, each of these positioning members 19 is provided on the lower end surface of the X slider 17.
A proximity switch 20 is provided to face the. When moving the X slider 17, if the detection signals of each positioning member 19 generated by the proximity switch 20 are used, the X slider 17 can be moved by a predetermined length in the X direction. Further, limit switches LS1 and LS2 are provided at both ends of the beam 18, respectively, and the movement range of the X slider 17 in the X direction is set.

Next, two guide shafts 21, 21 are fixed to the X slider 17 in a direction orthogonal to both the guide shafts 15, 15 and the screw shaft 16, in parallel to each other, at one end of each. Both guide shafts 2
A vertically long support plate 22 is fixed to the other ends of the frames 1 and 21, and a roller 22a provided at the lower end of the support plate 22 moves the frame base 1 parallel to the frame body 14.
It is engaged with a rail member 23 provided on 3 in a freely rolling manner. and both guide shafts 21,
A drive shaft 24 is provided in parallel with the guide shaft 21 in the middle of the guide shaft 21 . Both ends of the drive shaft 24 are supported by bearings provided on the X slider 17 and the support plate 22, respectively, and one end on the X slider 17 side is supported by the X slider 1.
It protrudes outside of 7. A pulley 25 is fixed to one end of this protruding drive shaft, and a motor M is fixed to the upper part of the X slider 17.
It is interlocked and connected to the second output pulley 26 via a belt 27. A Y slider 28 is slidably provided on the guide shaft 21, and the drive shaft 24 is engaged with a nut portion 28a fixed at the center of the Y slider 28. Therefore, if the motor M2 is driven to rotate the drive shaft 24, the Y slider 28 will rotate between the guide shafts 21, 21.
The X slider 17 can be moved in the Y direction perpendicular to the moving direction X of the X slider 17. Next, as shown in FIG. 4, a connecting plate 2 is provided between the lower end of the support plate 22 and the lower end of the X slider 17.
9 have been erected and fixed. A plurality of positioning members 3 are mounted on the connecting plate 29 at predetermined intervals.
0 is set. In addition, the Y slider 28
A proximity switch 31 is provided on the lower end surface of the holder 30 so as to face the positioning members 30. When moving the Y slider 28, by using the detection signals of each positioning member 30 generated by the proximity switch 31, the Y slider 28 can be moved by a predetermined length in the Y direction. Further, limit switches LS3 and LS4 are provided at both ends of the connecting plate 29, respectively, and the movement range of the Y slider 28 in the Y direction is set.

Next, the Y slider 28 is provided with a gripping means for gripping the tip 2 and moving it up and down in the vertical direction. As shown enlarged in FIGS. 6 to 8, the barrel of the cylinder CY1 is mounted vertically downward on the Y slider 28 via a mounting jig. A mounting plate 32 bent downward into an L-shape is fixed to the tip (lower end) of the rod of the cylinder CY1. Mounting plate 3
A drive source 33 is provided on the lower piece of the tip 2, and a hand HA1 for holding the head of the tip 2 is provided at the lower end thereof. This hand HA
1 is provided with another hand HA2 via a pair of rods 34, 34, and is capable of holding a rubber cap that is placed over the head of the tip 2 and fixes the end of the thread. ing.

Next, as shown in FIGS. 3 to 5, a container 35 for storing a large number of pots 2 can be installed at a position between the frame body 14 and the rail member 23 on the upper part of the frame stand 13. ing. The set position of each container 35 with respect to the device for taking out the tip 2 is determined by a positioning plate 13a provided on the frame stand 13, etc. Further, the positioning member 1 is provided on the inner bottom surface of each container 35 in each of the X direction and the Y direction.
9 and 30 so that they are equally spaced,
A large number of short rods are vertically arranged in a matrix, and each short rod 35a is inserted into the hole 2 at the bottom of the tip 2.
a to hold each tip 2 in a predetermined position. In this embodiment, the X slider 17 and the Y slider 2 are
8 are set at desired positions, the hand HA1 provided on the Y slider 28 is set directly above the tip 2 located at the position corresponding to the desired position. In this embodiment, the two shuttles may be loaded with different types of weft yarns, and the two containers 35, 35 can separately store the cots 2 wound with different types of yarns. ing.

According to the above-mentioned chip pick-up device A, both the motors M1 and M2 are driven using the signals from both the proximity switches 20 and 31, and the X,
Move the Y sliders 17 and 28 to adjust the hand HA.
1. HA2 can be moved to any position. Furthermore, cylinder CY1 and hand HA1
With this, it is possible to grasp the head of the desired tip 2, lift it up, and transport it to the device for the next process.

(B) Delivery device This device is installed on a frame stand 13 between the pick-up device A and the tip setting device C described in C, and is carried by the pick-up device A with the head held. This is a device for grasping and receiving the bottom of the tip 2 and passing it to the tip setting device C in the next process.

As shown in FIG. 9, the barrel of the cylinder CY2 is fixed to the frame base 13 via a mounting jig with the tip of the rod pointing diagonally upward.
As shown in Figures 10 to 12, the cylinder
A base member 36 is fixed to the tip of the rod of CY2. A swinging member 38 is provided on the plate portion 36a of the base member 36 via a shaft member 37, and a hand HA3 is provided at the tip thereof. A substantially triangular plate member 38a is provided on the side of the swinging member 38, and one end of a spring 39 is attached to an inner protrusion of the plate member 38a, and the other end of the spring 39 is provided on the plate member 38a side of the base member 36. It is attached to the attachment piece 36b. Also, base member 3
A stopper 3 is provided at the top of the tip of the plate piece 36a of No. 6.
6c is provided to protrude toward the swinging member 38 side. Therefore, in the state shown in FIG. 11 in which the rod of the cylinder CY2 is extended, the swinging member 38 swings upward by the force of the spring 39 and moves to the stopper 36.
c, and the hand HA3 is configured to face in the same direction as the rod of the cylinder CY2.
Further, an arm-shaped plate 40a is fixed to the upper mounting jig 40 that attaches the cylinder CY2 to the frame base 13, and a cam follower 40 that contacts the edge of the plate 38a is attached to the tip of the arm-shaped plate 40a.
b is rotatably attached. Therefore, when the rod of the cylinder CY2 is retracted, the plate 38a contacts the cam follower 40b and the spring 3
Rotate in the direction of stretching 9. Along with the plate material 38a, the swinging member 38 and the hand HA
3 rotates downward around the shaft member 37, and when the rod is completely retracted, the hand HA3 becomes horizontal as shown in FIG. Note that 41 in the figure
is a device that holds down the ends of the weft threads so that they do not come apart when the hand grasps the kop.

According to the delivery device B having the above configuration,
As shown in Figure 9, pull in the rod and
At the position where HA3 is horizontal, remove the said take-out device A.
Receive Kotup 2 from , as shown by the imaginary line,
At the upper position where the rod is extended, the tip 2 can be passed to a setting position C, which will be described later.

(C) Setting device for the tip 2 As shown in FIG. 5, a setting device C for the tip 2 is installed on the frame stand 13 next to the take-out device A. As shown in FIGS. 13 and 14, the pedestal 42 fixed on the frame 13 has a
A first drive shaft 43 (hereinafter referred to as the first shaft 43) is rotatably provided via a pair of bearings 42a, 42a, and one end of this first shaft 43 is inserted through one of the bearings 42a. It sticks out to the outside. Next to the pedestal 42, a motor M3 is provided on the frame 13 via another pedestal 44, and one end of the first shaft 43 is operatively connected to the output shaft of the motor M3 via a joint. ing. Next, a bracket 45 is attached to the first shaft 43.
A rectangular base plate 46 is fixedly provided through the base plate 46 . Stopper members 46a are provided at the front and rear portions of the lower surface of the base plate 46, respectively. Further, the pedestal 42 includes both the stopper members 46a,
Shock absorbers 47, 47 are provided so as to abut on the respective shock absorbers 46a.
Therefore, the base plate 46 and the device group provided on the base plate 46 are configured to be able to swing within a predetermined angular range about the first axis 43.

Next, a pair of support blocks 48, 48 each having a bearing are fixedly installed on the base plate 46. A second drive shaft 49 (hereinafter referred to as the second shaft 49) is rotatably provided on a bearing of the support block 48 so as to be perpendicular to the first shaft 43. 2nd axis 4
The rear end of the rotary actuator 5 is fixed on the base plate 46 via a bracket 50a.
It is interlocked and connected to the output shaft of 0 through a joint. Further, the rear end of the rotary actuator 50 is provided with a proximity switch for detecting the rotation angle of the second shaft 49, a stopper for setting the rotation range, and the like.

Next, as shown in FIG. 9, the second shaft 49
is set to a length that reaches the replacement position of the stopper 2 on the shuttle race 12 of the loom,
A substantially box-shaped housing 51 is fixed to the tip thereof. As shown in FIG. 16, a cylindrical shaft case 52 is fixed to the outer wall of the housing 51 so that its axis is perpendicular to the second shaft 49. As shown in FIG. Inside the shaft case 52, there is a third drive shaft 5.
3 (hereinafter referred to as the third shaft 53) is provided so as to be rotatable via a pair of bearings and not to move in the axial direction. The third shaft 53 has a cylindrical shape, and a boss 53a having a spline groove on the inner peripheral surface is inserted and fixed into an opening at the upper end. A spline shaft 54 (hereinafter referred to as the fourth shaft 54) serving as a fourth drive shaft is inserted into this boss so as to be freely slidable in the axial direction. As shown in FIGS. 15 and 16, a windmill-shaped rotary arm plate 55 having three arms 55a is attached to the tip of the fourth shaft 54 via a mounting bush 56 and the like. The rotating arm plate 55 is arranged in a plane perpendicular to the axes of the third shaft 53 and the fourth shaft 54. At the tip of each arm 55a, there is a hand HA4.
is provided, and the tip 2 is connected to the third shaft 53.
It is configured so that it can be grasped in a posture parallel to the fourth axis 54. A servo motor M4 is attached to the lower surface of the housing 51 on the opposite side to the shaft case 52, and its output shaft is connected to the third shaft 53 via a joint. Therefore, by servo motor M4,
By rotating the third shaft 53 and the fourth shaft 54 inserted and connected to the third shaft 53 via a spline, the rotating arm plate 55 and each hand HA4 can be rotated by an arbitrary rotation angle. Further, a third shaft 53 and a fourth shaft are provided on the peripheral wall of the shaft case 52.
A cylinder CY3 is fixedly installed parallel to the shaft 54. An actuating plate 57 is attached to the tip of the rod of the cylinder CY3, and the tip of the actuating plate 57 is slidably engaged with an outer circumferential groove 56a of a mounting bush 56 provided at the tip of the fourth shaft 54. ing. Therefore, if the cylinder CY3 is operated to extend and retract the rod, the fourth axis 54 and the hand HA4
The rotary arm plate 55 having a rotary arm plate 55 can be slid along the axis.

Further, the setting device C of this embodiment has a proximity switch, a limit switch, etc. at each important point of the driving part, and the operating range and stop position of the entire device are accurately determined.
can be handled smoothly.

According to the tip setting device C configured as described above, the tip 2 is received from the delivery device B at the upper position shown by the imaginary line in FIG. 9, and the new tip is set at the lower position shown by the solid line in FIG. 2 to the shuttle 1, or grab the old tip 2 and take it out.

As shown in FIG. 1, a funnel-shaped tip 58 is provided next to the setting position C, and is configured so that the old tip 2 taken out from inside the shuttle 1 by the setting device C can be thrown away. has been done.

(D) Shuttle drawer device As shown in FIGS. 1, 17, and 18, a beam 59 is provided above the shuttle race 12 of the loom, and the beam 59 is equipped with an automatic tip changer. A wall body 60 is attached to attach various parts and devices constituting the unit 10. 17th
In the figure, a box-shaped mounting frame 61 is provided on the left side of the wall 60 via a bracket material 61a. This mounting frame 61 is for installing a thread tying device J, which will be described in detail in section J, and a shuttle pull-out device D is provided below it. This device D has a shuttle race 12
It is used to pull out the shuttle 1 which has entered the shuttle box 11 by flying above it onto the shuttle race 12 for replacing the tip. A cylinder CY4 is fixed to the lower surface of the mounting frame 61 via a pair of brackets 62, 62 so that the tip of the rod faces the shuttle box 11 and is parallel to the shuttle race 12. A guide rod 63 is slidably supported by linear bearings provided at the lower ends of the brackets 62, and the tip of the guide rod 63 is interlocked and connected to the rod of the cylinder CY4 via a connecting plate 64. ing. A rotary actuator 65 is fixed to the lower end of the connecting plate 64 on the side opposite to the shuttle box 11, and is inserted through the connecting plate 64 to connect the shuttle box 1.
A swing arm 66 is fixed to the output shaft of the rotary actuator 65 that protrudes toward the first side. A suction tube 67 is provided at the tip of the swing arm 66 in parallel with the shuttle race 12, and a vacuum pad 67a for suctioning and holding the shuttle is attached to the tip of the suction tube 67. At the rear end of the suction tube 67, the suction tube 6
A suction tube 67b communicating with the vacuum pad 67a and the vacuum pad 67a is provided so that the shuttle 1 can be attracted to the vacuum pad 67a by vacuum force. Further, the rotary actuator 65 is provided with a proximity switch for setting and detecting a rotation range.

In the above configuration, when the loom is in normal operation, the cylinder CY4 retracts the rod, and the rotary actuator 65 swings the swinging arm 66 upward to move the vacuum part 67a etc. to the upper position. They are being evacuated. When replacing the shuttlecock 2, the vacuum part 67a is swung and lowered to a position directly above the shuttle race 12, the rod of the cylinder CY4 is extended to hold the shuttle 1 in the shuttle box 11 with the vacuum part 67a, and the rod of the cylinder CY4 is This acts to retract the shuttle 1 in the box and pull it out onto the shuttle race 12.

(E) Thread drawing device, etc. As shown in FIGS. 1 and 5, a thread drawing device E is provided on the frame stand 13 next to the tip setting device C. The thread pulling device E includes a cylinder CY5 that expands and contracts in a direction perpendicular to the longitudinal direction of the shuttle lace 12;
The hand HA5 is provided at the tip of the rod of the cylinder CY5. Further, as shown in FIG. 19, a thread presser device E1 and a thread guide E2 are provided at both left and right positions of the front end edge of the shuttle race 12, centering on the operating axis of the thread pull-out device E. Thread presser device E1
is a cylinder CY6 that expands and contracts in the vertical direction,
It has a presser plate 68 connected to the rod of the cylinder CY6. According to these devices and the like, when exchanging a cot, one end of the weft yarn on the weaving 69 side, which is led out from the shuttle 1 and woven between the warp yarns on the shuttle lace 12, is held by the presser plate 68 of the yarn presser E1. It is pressed and fixed between the shuttle race 12 and the shuttle race 12. And thread pulling device E
is configured to grasp the weft yarn 70 with a hand HA5 and pull it toward the front with a cylinder CY5. Therefore, as shown in FIG. 19, the weft yarn 70 is fixed by the presser plate 68 and slidably supported by the yarn guide E2, so that the weft yarn 70 is pulled out toward the front in a substantially triangular shape. .

The above-mentioned devices are provided for winding the weft yarn 70 on the reel device F described in the next section (F) and adjusting the position of the knot N between the new and old weft yarns.

(F) Reel device as a thread adjustment device As shown in FIGS. 1 and 19, a triangular reel is installed between the thread pull-out device E and the thread guide E2 on the front side by the thread pull-out device E, etc. A reel device F is provided as a yarn adjusting device capable of winding the weft yarn 70 drawn out into a shape a desired number of times. As shown in FIGS. 20 and 21, a hollow block body 71 is fixed to a fixed portion of the loom in front of the shuttle race 12 via a mounting jig. A motor M5 is attached to the rear end surface of the block body 71 (the side surface of the frame base 13) via a reduction gear 72. Further, on the front end surface of the block body 71 (the side surface of the shuttle race 12), a circumferential groove portion 7 for winding the thread is provided on the outer periphery.
A disk-shaped reel 73 on which 3a is formed is fixedly installed. The output shaft 72a of the reducer 72 driven by the motor M5 is connected to the block body 71.
is connected to one end of the rotating shaft 74 inside the
The other end of the rotating shaft 74 is supported by a bearing 73b provided at the axial center of the reel 73 and protrudes toward the front end surface of the reel 73. A through hole 74a perpendicular to the axial direction is formed in the circumferential surface of the protrusion of the rotary shaft 74, and a guide rod 75 is slidably inserted into the through hole 74a via a metal. At one end of the guide rod 75, there is a hook 7 for hooking the weft yarn 70 and winding it around the reel 73.
6 is fixedly installed, and this hook 76 is in contact with the front end surface of the reel 73. and said reel 7
A substantially spiral guide groove 77 is formed on the front end surface of the holder 3 over approximately two circumferences. This guide groove 77 is composed of a circular outer circumferential groove 77a and an inner spiral groove 77b, and the spiral groove 77b is continuous with the outer circumferential groove 77a, and a point plate 78 is provided at the confluence point of the two so as to be swingable. . And this guide groove 77
A roller member 76a rotatably attached to the hook 76 is engaged inside.

Next, on the lower rear end surface of the reel 73, the weft thread 7, which is drawn around by a rotating hook 76, is provided.
A locking tool 79 for hooking 0 is fixedly provided. Further, a detection protrusion 74b is provided on the rotating shaft 74 within the block body 71. The tip of the proximity switch 80, which is provided through the peripheral wall of the block body 71, faces the detection protrusion 74b, so that the number of rotations of the rotating shaft 74, that is, the number of rotations of the hook 76 can be detected. has been done. Also, along the upper half of the front end surface of the reel 73 from the left and right side walls of the block body 71, a thread guide 81 is provided.
is provided, and is configured to guide the weft 70 drawn around by the hook 76 into the circumferential groove portion 73a of the reel 73. Further, a tactile switch 82 is provided near the thread guide 81 so that the number of windings of the thread can be directly detected.

In the above configuration, if the motor M5 is driven to rotate the guide rod 75 and the hook 76, the guide rod 75 can slide with respect to the through hole 74a, so the hook 76 moves the roller member 76a into the guide groove. 77
It moves toward the outer periphery while being guided by. When the hook 76 rotates once from the rotation start position, the hook at the tip of the hook 76 projects outward from the outer periphery of the reel 73, hooks the pulled-out weft 70 attached to the hook 79, and reels it. It can be wound around the circumferential groove part 73a of 73.

Since the length of the old weft from the already woven weave 69 to the shuttle 1 is almost constant, the new weft 7
When weaving is continued by simply tying 0a and the old thread 70b, knots N between the old and new threads repeatedly appear at predetermined positions during weaving, as shown in Figure 19 (b), and are connected in the warp direction. You may end up in a position. This means that the properties of the fabric change at specific locations, which is undesirable. Therefore, by using the reel device F of this section and winding the old weft 70 a different number of times before cutting the old weft and removing the old weft when changing the tip 2, it is possible to remove the weft that is formed after tying. The positions of the knots N can be arbitrarily scattered throughout the weave 69, as shown by C in FIG. Further, when the yarn is wound up after tying, the slack in the weft yarn near both the old and new yarns that have been tied is removed, thereby preventing accidents such as the weft yarn becoming entangled with equipment. In addition, as will be described later, tie the knot N of the thread to shuttle 1.
It can be pulled out from the hole 1b provided in front of the.

(G) Shuttle holding device, etc. As shown in Figures 1 and 17, the beam material 59
A bracket plate 83 is attached to the wall body 60 provided in the
Cylinder as shuttle holding device G via
CY7 and a cylinder CY8 as a stopper device G1 are provided side by side. Both cylinders CY7 and CY8 are located directly above the shuttle race 12, with the rods facing downward. When the shuttle pull-out device D pulls out the shuttle 1 from the shuttle box 11 onto the shuttle race 12, the setting device C raises the old tip 2 in the shuttle 1 to a vertical position as shown in FIG. 2a. , cylinder CY7 operates at this time to press down the front end of shuttle 1 and prevent shuttle 1 from floating above shuttle race 12.
When the replacement of the tip 2 is completed, the setting device C places the new tip 2 horizontally in the shuttle 1, but the cylinder CY8 is activated at this time.
Hold the head of the new tip 2 and firmly push it into the shuttle 1, confirm that the new tip 2 is definitely stored in the shuttle 1, and at the same time check the presence or absence of the tip 2 itself.

Next, as shown in FIG. 17, the bracket plate 83 is provided with a thread twisting device G2. This device G2 is composed of a cylinder CY9 installed horizontally with the tip of the rod facing the thread tying device J, which will be described later, and a thread pulling bar 84 provided at the tip of the rod.

(H) Old thread pulling device as a thread processing device, etc. As shown in Figures 1 and 17, between the thread twisting device G2 and the thread tying device J, there is an old thread drawing device as a thread processing device. A device H is provided. When exchanging the old and new cots 2, both wefts of the old and new cots must be tied together. In order to do this, it is necessary to cut the old weft yarn and use the setting device C to remove the old tip 2 from the shuttle 1. However, during this time and until the process of tying the old and new weft yarns is completed, the shuttle lace 12 must be removed from the shuttle 1. The end of the old weft yarn that is being held is held by this device H.

As shown enlarged in FIGS. 22 and 23, a mounting bracket 85 is fixed to the wall 60, and a cylinder CY10 is mounted vertically downward on the front side of the mounting bracket 85. A rotary actuator 86 is fixed to the tip of the rod of the cylinder CY10. A fixed arm 87 is fixed to a case portion of the rotary actuator 86, and a swing arm 88 is attached to its output shaft. The fixed arm 87 is oriented perpendicularly to the wall 60 in the horizontal plane. The swinging arm 88 is a rod whose center part is bent slightly downward to make it easier to hook the weft, and swings from a position parallel to the shuttle lace 12 to a position parallel to the fixed arm 87 in a horizontal plane. °It is said to be able to swing freely.
Next, on the back side of the mounting bracket 85, a suction pipe 89 is vertically installed parallel to the cylinder CY10. A pair of vertical notch grooves 89a are formed on the front side and the back side of the open lower end of the suction pipe 89, and the cylinder CY
10 to pull up the rod, the central part of the swinging arm 88, which is oriented perpendicularly to the wall 60, can pass through these notched grooves 89a and enter the suction tube 89. It is configured so that it can be done. A duct hose 90 is connected to the upper end of the suction pipe 89, and the inside of the suction pipe 89 is sucked upward, and is drawn into the suction pipe 89 by the swinging arm 88 of the cylinder CY10. The structure is such that the ends of the old weft yarns can be sucked upward with air and held there.

Next, as shown in FIG. 1, a tip guide H1 is provided below the old thread pulling-in device H. The old tip 2 is pulled out together with the shuttle 1 onto the shuttle race 12, and the setting device C
This tip guide H1 is held in a substantially vertical state by a pair of swingable holding plates 91, 91.
It is configured in such a way that it can hold this. Further, one retaining plate 91 is provided with a substantially S-shaped rod-shaped thread guide 92.
As shown in FIG.
If the old yarn 70b is pulled horizontally in step 2, the horizontal old yarn 70b is cut by a heat cutter 93 provided near the tip guide H1.

(I) New thread pulling device as a thread processing device As shown in Figures 1 and 17, there is a new thread pulling device as a thread processing device located next to the old thread drawing device H and between the thread tying device J, which will be described later. New thread pulling device I
is provided.

As shown in FIGS. 24 and 25, the wall 6
0 is provided with a slide rail 94,
The slide rail 94 has a slide block 9.
5 are movably engaged. There are two bracket plates 96 on the sides of the slide block 95.
a and 96b are fixedly installed. A rod of a cylinder CY11 fixed to the wall 60 is connected to the tip of one bracket plate 96a, and the slide block 95 is connected to the slide rail 9.
It is configured so that it can be freely moved up and down along 4. A hollow box-shaped base body 97 is swingably attached to the tip of the other bracket plate 96b by a shaft bolt 97a. A suction tube 98 for inserting the new tip 2 erected on the shuttle race 12 is connected and communicated with the lower surface of the base body 97 . Although details are not shown, high-pressure air nozzles are provided at multiple locations at the lower end of the opening of the suction tube 98.
The ends of the new thread wound around the thread can be unraveled by wind pressure. Further, a suction duct 99 connected to a suction means (not shown) is connected and communicated with the upper surface of the base body 97, and sucks the new thread 2 housed in the suction tube 98, and sucks the end of the new thread into the duct. It is configured so that it can be done.

Moreover, as shown in FIGS. 26 and 27,
Inside the base body 97 is a swing plate 10 that blocks the path.
0 is set. A swing shaft 101 to which a swing plate 100 is attached protrudes outside the base body 97, and a rod of a cylinder CY12, whose barrel is swingably mounted to the suction duct 99,
It is connected to the end of this swing shaft 101. Further, on the opposite side of the slide rail 94 across the suction duct 99, there is another slide plate 102.
is provided, and a roller 104 at the tip of an arm 103 provided in the suction duct 99
It is rotatably engaged with the slide plate 102.

The device I configured as described above starts operating when the new tip 2 is set in a vertical position as shown in FIG. 2a with respect to the shuttle 1 pulled out onto the shuttle race 12. ing. That is, as shown in FIG. 25, the end of the new thread is pulled upward by extrapolating and suctioning the new tip 2 with the suction tube 98, together with the end of the old thread that is being pulled vertically upward in the adjacent part. , to hold the new thread in the same state in preparation for the next thread tying operation.

(J) Thread tying device This device is a device for tying the end of the new thread 70a and the end of the old thread 70b, which are lined up vertically upward, into a bundle. As shown in Fig. 32, tying a bundle involves making a loop by crossing two aligned threads 70a and 70b, and passing the part other than the ends through this loop to tie a knot. This is a binding method. With this knotting method, the knot can be easily untied by pulling the ends of both threads.

In this embodiment, a bag weave cloth to be used as a filter material for paper manufacturing is to be manufactured.
In the case of bag weaving, the weft threads are continuous, but in such applications, it is inconvenient for many knots N to be lined up in the fabric, and as described above, the weft threads are woven by the reel device F. Knot N inside
I'm trying to show you the location. Furthermore, if the knot N of the weft yarn 70 is tied in a bundle, the knot N of the weft yarn 70 that is woven can be untied by hand after weaving is completed.
It is also possible to eliminate unevenness of the fibers caused by

Now, as shown in FIGS. 1, 5, and 17, a mounting frame 61 is provided above the shuttle lace 12 next to the old thread pulling device H and the new thread pulling device I. This mounting frame 6
A thread tying device J is installed inside the thread tying device J so as to be slidable in horizontal and lateral directions.
Further, a cylinder CY13 is fixedly installed in the mounting frame 61 in parallel with the shuttle race 12. The rod of cylinder CY13 is connected to the thread tying device J, and the entire thread tying device J is advanced to the thread tying position on the right side of the figure (approximately directly below the raised new thread pulling device I). It is now possible to do so.

As shown in FIGS. 28 to 31, a triangular thread introduction part 110a is formed at the tip edge of the horizontal lower plate 110 of the present thread tying device J, and further behind the introduction part 110a. In the center is a guide groove 1 for positioning the introduced thread 70.
10b is formed. On the bottom plate 110,
A mounting plate 111 is vertically installed and fixed approximately in the center, and support columns 112 are erected on both sides of the front. These mounting plates 111 and support columns 112 have an introduction part 113 of the same shape at the same position as the lower plate 110.
a and a guide groove 113b.
is fixed horizontally. Next, a shaft hole is formed near the center of the mounting plate 111, and a cylindrical guide 114 communicating with this shaft hole is formed.
is fixed perpendicularly to the back surface of the mounting plate 111. A slide tube 115 is inserted into this guide 114, and the front end of the slide tube 115 projects forward from the shaft hole, and the rear end projects backward from the open rear end of the guide 114. Further, a spiral guide groove 116 is formed on the outer peripheral surface of the slide tube 115.
A guide pin 1 protruding from the inner peripheral surface of the guide 114 is formed in the guide groove 116.
14a is engaged. In addition, a cylinder CY14 is fixedly installed on the outer peripheral surface of the guide 114.
The tip of the rod of the cylinder CY14 is connected to a bush 117 rotatably provided at the rear end of the slide tube 115 that projects rearward.

Next, an operating shaft 118 is inserted into the slide tube 115 so as to be slidable back and forth, and both front and rear ends of the operating shaft 118 protrude from both front and rear ends of the slide tube 115, respectively. A cylinder is attached to the bush 117 via a mounting plate 117a.
CY15 is fixedly installed, and the cylinder CY15
The rod is connected to the rear end of the actuating shaft 118. Further, a U-shaped base frame 119 is fixed to the front end of the slide tube 115. Base frame 1
Two shafts 120, 120 are provided parallel to each other between the upper and lower flanges 119a, 119a of 19, and at the upper and lower positions of both shafts 120, 120, there are a total of four claws with their tips facing inward. Each plate 121 is rotatably provided. An upper pair of nail plates 121, 121 and a lower pair of nail plates 1
21 and 121 are interlocked with each other by a link mechanism, and two sets of upper and lower gripping claws 12
2,122. and both shafts 12
The front end of the operating shaft 118 is rotatably connected to a link mechanism 123 that connects the shafts 0 and 120.

As explained above, when the cylinder CY14 is operated, the slide tube 115 slides back and forth along the guide 114 while rotating, and when the cylinder CY15 is operated, the operating shaft 118 is sliding against the shaft 120,1
20 and a link mechanism 123, the two sets of gripping claws 122, 122 are simultaneously opened and closed. That is, as shown in FIGS. 33 to 35, two threads (omitted to one in the figures) are inserted through the upper and lower guide grooves 110b and 113b.
It is constructed so that it can capture and twist 180°.

Next, a pressing lever 1 is provided below the gripping claw 122.
24 are provided. The pressing lever 124 is operatively connected to an actuator fixed to the mounting plate 111, and is configured to be able to rotate upward by 90 degrees. That is, as shown in FIG. 36, the gripping claws 122, 122 are configured to hook the intersection of the threads 70 and pull them to one side.

Next, on one side of the gripping claw 122, a small hook-shaped claw 126 and a large claw 127 having a pressing bar 127a at the tip are coaxially connected to an actuator 128 provided on the mounting plate 111. ing. That is, as shown in FIG. 37, the pressing lever 1
The small claw 126 connects the intersection of the threads 70 gathered to one side
At the same time, a part of the same thread 70 can be pushed down by a pressing bar 127a of the large claw 127.

Next, as shown in FIGS. 29 to 31, a clamping claw 129 is provided between the large claw 127 and the small claw 126 and the gripping claw 122. As shown in FIGS. A sliding tube 131 is movably inserted into a guide tube 130 that is connected and communicated with the shaft hole of the mounting plate 111 from the back side. An operating rod 132 is slidably provided within the sliding tube 131 via a bearing.
The rear end of the actuating rod 132 is connected to the rod of a cylinder CY16 fixed to the rear end of the sliding tube 131. Also, the frame member 1 fixed to the front end of the sliding pipe 131
33, a clamping claw 129 consisting of a pair of claw members 129a, 129a is pivotably attached to the clamping claw 129, and the rear end of each claw member 129a and the front end of the operating rod 132 are connected by a link mechanism. There is. A cylinder CY17 is provided on the outer periphery of the guide tube 130, and a rod of the cylinder CY17 is connected to the rear end of the sliding tube 131. cylinder CY
17, the clamping claw 129 can be moved back and forth as a whole, and by operating the cylinder CY16, the clamping claw 129 can be opened and closed. Also, Figures 28, 30, and 33~
As shown in FIG. 41, a thread tightening cylinder 125 is provided on the mounting plate 111 so as to be movable back and forth, and this thread tightening cylinder 125 is provided with a thread tightening arm 125a for hooking and pulling the thread. It is being That is, as shown in FIGS. 38 to 41,
The clamping claw 129 is moved forward, the thread 70 pushed down by the large claw 127 is grabbed by the clamping claw 129, and after the grasping claw 122 and the small claw 126 are released, the thread tightening cylinder 125 is activated. - It is configured so that the thread 70 can be tied into a bundle by moving it forward and tightening the thread. Note that, as shown in FIGS. 29 and 30, a heat cutter 134 for cutting unnecessary thread 70 is provided above the gripping claw 122. Further, as shown in FIGS. 28 and 30, a device is provided inside the upper and lower guide grooves 110b and 113b to sandwich the threads 70 that are inserted through the guide grooves and to apply a predetermined tension to these threads. ing.

Next, the operation of the switching device 10 made up of the devices described in each section (A) to (J) above will be explained.

First, the container 3 is
Take out tip 2 from 5. That is, both motors M1, M
2 to move the X and Y sliders 17, 28 along the respective guide shafts 15, 21, and both positioning members 19, 3 output from both proximity switches 20, 31
Based on the detection signal of 0, the X slider 17 and Y
The slider 28 is stopped at a desired position. Next, the cylinder CY1 is operated to lower the hand HA1, and the hand HA1 grasps the head of the tip 2 at a desired position. Then, the cylinder CY1 and motors M1 and M2 are driven to transport the cup 2 to the adjacent delivery device B.

The delivery device B receives the tip 2 from the take-out device A at the retracted position as shown by the solid line in FIG. When the hand HA3 of the delivery device B, which is in a horizontal state as shown in FIG.
Remove the rubber cap. Then, delivery device B
cylinder CY2 operates and the rod extends.
Swinging member 38 and hand HA at the tip of the rod
3 rotates upward around the shaft member 37, and the hand HA3 rises while gripping the tip 2 in a posture perpendicular to the moving direction (diagonally upward). Then, the delivery device B delivers the tip 2 to the hand HA4 provided on the rotary arm plate 55 of the setting device C at the upper position in the extended position as shown by the imaginary line in FIG. In this embodiment, two types of cots 2 with different types of wefts are to be exchanged alternately,
Two of the three hands HA4 of the setting device C are determined to grip the other type of tip 2, and the remaining one hand HA4
has come to be used to handle the old Kotup 2.

Now, when the remaining weft threads 4 in the shuttle 1 are running low, the loom is automatically stopped when the shuttle 1 flies over the shuttle lace 12 and enters the shuttle box 11. First, as shown in FIG.
Shuttle Box 11 to Shuttle Race 12
Pull it up. Next, as shown in FIG. 19, the cylinder CY6 is actuated to lower the presser plate 68 and fix the weft 70 on the weave 69 side. Also, before and after this operation, the thread pull-out device E operates, and the thread guide E2
The weft 70 is pulled out in a triangular shape toward the front using the presser plate 68 and the weft 70 is delivered to the reel device F to break up the knot N as described above, and the old weft is wound an appropriate number of times to adjust the weft 70. Do this.

Next, the setting device C of the tip is activated. First, the motor M3 is actuated to tilt the first shaft 43 downward, and the device C is placed in the state shown in FIG. 9.
Next, the rotary actuator 50 operates, and the second
Rotate the shaft 49. That is, in FIG. 9, the second shaft is rotated so that the rotary arm plate 55 swings 90 degrees toward the front side of the page, and after the operation, the rotary arm plate 55 is in a state perpendicular to the horizontal plane. Become. Although not shown, in this state, the hand HA4 with the rotary arm plate 55 is in a position to sandwich the head of the old tip 2 which is placed upside down in the pulled out shuttle 1. Then, operate the hand HA4 to grab the old tip 2, and operate the rotary actuator 50 90 degrees in the opposite direction while holding the old tip 2, to move the old tip 2 in the shuttle 1 into the It can be placed in a vertical position as shown in Figure 2a. In this case, since the old tip 2 is attached to the tongue 3 in the rear of the shuttle 1, if you try to raise the old tip 2 by swinging the hand HA4 upward, the shuttle 1
It also comes up from above the shuttle race 12. Therefore, as shown in FIG. 17, the shuttle holding device G is activated before and after this operation to press and fix the vicinity of the tip of the shuttle 1 between the rod of the cylinder CY7 and the shuttle race 12. Note that when the old tip 2 is placed in a vertical position within the shuttle 1, the old thread 70b is stretched diagonally between the old tip 2 and the shuttle 1 (not shown), as shown in FIG. It's summery.

Next, the old yarn pulling device H, which is a yarn processing device, is activated. First, cylinder CY10 is activated and both arms 87 and 88 are lowered. Next, the swing arm 88
rotates, and both arms 87 and 88 sandwich the old thread 70b. Then, cylinder CY10 retracts and operates.
Both arms 87 and 88 rise with the old thread 70b hooked up, and reach the notch groove 89 together with the old thread 70b.
It enters the suction tube 89 from a. Here, the tip guide H1 shown in FIG. 1 opens the holding plates 91, 91 that were holding the old tip 2, and as shown in FIG. Pull it to. The stretched old yarn 70b comes into contact with the heat cutter 93, and is melted and cut by the heat. The end of the old yarn 70b separated from the old tip 2 is sucked into the suction tube 89 and held in a vertical state by suction.

Then said setting device C is activated again. As mentioned above, the main setting device C at this time is in a posture approximately as shown by the solid line in FIG. be. Therefore, the cylinder CY3 is operated to drive the fourth shaft 54 upward, and the rotary arm plate 55 and hand HA4 are raised in the direction of arrow D as shown in FIG. hand HA
Since the old tip 2 held by the shuttlecock 4 is lifted upward, the old tip 2 is removed from the tongs 3 of the shuttle 1. Next, the servo motor M4 is operated to rotate the third shaft 53 and rotate the rotary arm plate 55. The direction of rotation at this time is selected depending on which of the new tips 2 held by the hand HA4 is to be set in the shuttle 1, and the rotation angle is approximately 120°. In other words, old Kotup 2 is Shuttle 1
is removed from above the tongs 3, and a new tip 2 is set directly above the tongs 3. and said cylinder CY
3 operates to retract, and insert the new tip 2 into the tongue 3 of the shuttle 1. Then, the hand HA4 that was gripping the new tip 2 opens, the servo motor M4 rotates slightly, and the hand HA4 is retracted from the vicinity of the head of the new tip 2.

Next, the new yarn pulling-in device I as a yarn processing device is activated. First, the cylinder CY11 operates, and the suction duct 99, suction cylinder 98, etc. descend. 17th
As shown in the drawings and FIG. 25, the suction tube 98 draws up the air inside while extrapolating the new tip 2, which is placed almost vertically above the shuttle race 12. At this time, multiple nozzles installed near the lower end of the opening of the suction cylinder 98 blow out high-pressure air to create an air flow around the new tip 2 in the opposite direction to the winding direction, so that the new tip 2 is tightly wound. The ends of the new yarn 70a are forcibly separated and are sucked into the suction duct 99 through the upper base body 97. When the suction cylinder 98 reaches the lower end, the cylinder CY12 is actuated to move the swing plate 100 inside the base body 97 and clamp the end of the sucked new thread 70a between it and the opening of the base body 97. Next, the cylinder CY11 is retracted, and the suction cylinder 98 and the like that grip the end of the new thread 70a are raised. At this time, the new yarn of the new tip 2 set in the shuttle 1 is in a state of being pulled upward.
Also, the old thread 7 pulled out from the front part of the shuttle 1
The end of 0b is in a state of being guided upward alongside the new thread 70a. When the suction cylinder 98 reaches the rising end,
The cylinder CY12 is operated to move the rocking plate 100 in the base body 97 to release the clamping, leaving the end of the new thread 70a to be sucked by air. When a sensor (not shown) detects that an appropriate length of the end of the new thread 70a has been sucked in, the servo motor M4 of the setting device C is driven to rotate the rotary arm plate 55.
Hold down the head of Shinkotsupu 2 with hand HA4 to prevent suction from sucking too much thread. At the same time, the cylinder CY9 of the thread tying device G2 operates, and the thread tying rod 84 pushes the ends of the old and new threads 70a, 70b toward the thread tying device J. At the same time, the cylinder CY13 is activated, and the entire thread tying device J slides below the new thread pulling device I. The ends of both the new and old threads 70a, 70b are connected to the thread tying device J.
It enters into the upper and lower guide grooves 110b and 113b from the upper and lower introduction parts 110a and 113a.

Next, the operation of tying a bundle of old and new threads by the main thread tying device will be explained with reference to FIGS. 28 to 41.
As mentioned above, in FIGS. 33 to 41, the old and new threads are combined into one thread for the sake of simplicity.

(1) First, operate cylinder CY15 and
18, and the thread 70 is pulled by the two sets of gripping claws 122, 122 and the upper and lower thread presser clamping claws (not shown).
grab. (Fig. 33) (2) Operate cylinder CY14 and slide pipe 1
15, the slide tube 115 is guided by the guide pin 114a in the guide groove 116 and rotates. That is, the gripping claw 122 twists the thread 70 by 180° while pulling it.
(Figures 34 and 35) (3) Operate the actuator to press the lever 12.
4 upward by 90 degrees, and push the intersection of the thread 70 drawn by the gripping claw 122 toward the large claw 127 and the small claw 126. (Fig. 36) (4) Activate the actuator 128 and open the small claw 12.
6 locks the intersection of the thread 70, and the pressing bar 127a of the large claw 127 presses the thread 7
Push down on one of the 0's. After this, the pressing lever 124 returns downward. (Fig. 37) (5) Operate cylinder CY17 to remove gripping claw 129.
is moved forward, and the thread 70 pushed down by the large claw 127 is held by the holding claws 129 by the operation of the cylinder CY16. (Figures 38 and 39)
Then, the holding of the thread 70 by the gripping claws 122, 122, the large claw 127, and the small claw 126 is released.

(6) The cylinder 125 waiting behind the lower guide groove 110b is operated to push out the thread 70 gripped by the clamping claw 129 and the clamping claw at the upper part of the lower guide groove 110b (not shown) and tighten the knot.
Both the old and new yarns are tied into a bundle knot as shown in FIG. 32, and at the same time, the unnecessary portion is cut off by a heat cutter 134 at a position above the knot, although not shown. (Figures 40 and 41)
Note that the cut end of the upper thread is sucked into the suction duct 99 and the suction pipe 89 and transported to a predetermined position.

After the old and new threads are tied in the manner described above, the setting device C operates again. Next, the rotary actuator 50 is driven to rotate the rotary arm plate 55 approximately 90 degrees perpendicular to the plane. That is,
Defeat the new Kotup 2 with Tongs 3, and the new Kotup 2
is set in shuttle 1.

From the tip of the new tip 2 to the front hole 1 of the shuttle 1
The part where both the new and old threads 70a and 70b are tied up to point b becomes unnecessarily long after the thread tying operation, and this idle part is likely to get caught in various devices. Therefore, before and after the setting device C inverts the new tip 2, the reel device F is operated again to wind up the weft. And the new Kotup 2 is Shuttle 1
The play of the weft yarn 70 is set within the reel device F.
When it is wound up by the screw presser G,
Cylinder CY8 as 1 is activated. That is, as shown in Fig. 17, the new tip 2 is inserted at the tip of the rod.
By pressing down the head of the new tip 2, the new tip 2 is reliably pushed into the shuttle 1, and at the same time, the existence of the new tip 2 is confirmed by a reed sensor (not shown).

Next, the reel device F is operated again. When the weft yarn 70 is wound onto the circumferential groove portion 73a of the reel 73 by the reel device F, as shown in FIG. Knot N is hole 1 of shuttle 1
Pass through b and exit to the rear of shuttle 1. When the loom is in operation, more tension than necessary may be applied to the knot N of the thread as it passes through the hole 1b, and in some cases it may be broken. Therefore, as in this embodiment, it is extremely effective to pull out the knot N to the rear of the shuttle 1 in advance using the reel device F in order to proceed with the work without interruption. Furthermore, as mentioned in section F, if the reel device F is made to wind up the old weft yarn 70 an appropriate number of times before replacing the tip 2, the position of the knot N in the weave 69 can be adjusted as shown in FIG. As shown in FIG. 3, it can be scattered here and there, and it is possible to eliminate the non-uniformity of the properties (for example, water permeability, etc.) of the weave 69 depending on the location. Next, the motor M5 of the reel device F is reversed one rotation to retract the hook at the tip of the rotatable hook 76 from the outer periphery of the reel 73 to the inside, and the shuttle 1 is pulled out by the shuttle pull-out device D. Push it into the shuttle box 11.
Then, the shuttle pull-out device D is swung upward so as not to become an obstacle to the flying shuttle 1.
While retracting, the hand of the thread pulling device E
Release HA5.

After exchanging the old tip and the new tip as described above, the loom can be operated again.

As explained above, in this embodiment, a desired type of pot stored at a predetermined position can be selectively taken out by the take-out device A, and 4
This new tip can be loaded into the shuttle, or the old tip can be removed from the shuttle, by means of a setting device C which operates independently in the directions. The new and old thread pulling devices H and I process the old and new threads, which are thin and difficult to shape, into an easy-to-handle shape, and the thread tying device J, which is equipped with various claw devices operated by a cylinder or the like, Now you can tie the thread. Since the reel device F allows weft knots to be scattered here and there during weaving, this is extremely convenient when weaving cloth for special purposes by bag weaving. The exchange device 10 is equipped with a large number of limit switches and sensors, as described above, in order to set the operating range of the equipment and devices, and to detect the operating amounts and positions of the equipment and workpieces. Furthermore, this exchanger is equipped with many detection means such as limit switches, proximity switches, sensors, etc. in addition to those specified in the explanation. The exchange device 10 is controlled by a control means such as a computer (not shown) using signals from these detection means. Therefore, the present apparatus, which is a composite of the many apparatuses described above and which handles thin and soft workpieces like thread, can be operated smoothly as a whole. As described above, according to the present embodiment, it is possible to automate the replacement work of the kop, which could only be done manually in the past, especially the work of replacing the kop in the case of bag weaving in which tied and continuous weft yarns are woven into the weft. I can do it.

[Effects of the Invention] The yarn adjusting device according to the present invention is configured so that the weft yarn connected to the locking device can be wound onto a reel a desired number of times by the rotating hook. Therefore, according to the present invention, in a loom having an automatic tip changer, the weft knot position during weaving can be freely adjusted by winding the old weft to an appropriate length before binding the old and new wefts. Furthermore, each time the weft binding operation is completed, the play in the weft yarn can be appropriately wound.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the present invention, in which a frame base on which a setting device etc. are installed is moved toward the front along an arrow; The figures are cross-sectional views of the shuttle with the tip installed, in which figure a shows the vertical position of the tip at the time of replacement, figure b shows the tip stored in the shuttle, and 3 is a front view of the take-out device in this embodiment, FIG. 4 is a sectional view of the take-out device, and FIG. 5 is a group of various devices installed on the frame base including the take-out device and setting device, and the shuttle box. 6 to 8 are views showing the hand of the take-out device, FIG. 9 is a right side view showing the main parts of this device, and FIG. Fig. 11 is a right side view showing the main parts of the delivery device in a position to receive the tip, Fig. 12 is a right side view showing the delivery device in operation, Fig. 12 is a front view of the delivery device, and Fig. 13 shows a part of the delivery device. A right side view of the broken setting device, FIG. 14 is a sectional view taken along the a-a cutting line in FIG. 13, FIG. 15 is a plan view of the second shaft and rotary arm plate of the setting device, and FIG. Fig. 17 is a front view showing the thread tying device and old and new thread pulling device installed above the shuttle lace, and Fig. 18 is a partial sectional view of the vicinity of the third and fourth shafts, which are the tips of the shuttle lace. Fig. 19 is a cross-sectional view from the right side showing the thread tying device and shuttle pull-out device provided above; Fig. 19 is a schematic plan view showing the relationship between the reel device, etc. and the position of the thread knot; Fig. 20 is a sectional view of a reel device as a thread adjustment device in an automatic tip changer;
Fig. 21 is a view of the reel of the same reel device as seen from the shuttle race side, Fig. 22 is a front view of the old thread drawing device as a thread processing device, Fig. 23 is a right side view of the thread drawing device, and Fig. 24 is a front view of the old thread drawing device as a thread processing device. The figure is a front view of the new yarn pulling device as a yarn processing device, FIG. 25 is a right side view of the new yarn pulling device, FIG. 26 is a sectional view of the base of the new yarn pulling device, and FIG. 27 is FIG. 28 is a sectional view taken from the front side of the thread tying device, FIG. 29 is a plan view of the thread tying device, and FIG. 30 is a right side view of the thread tying device. Fig. 31 is a sectional view showing the drive mechanism of the clamping claw, Fig. 32a is a plan view of the old and new threads tied in a bundle, Fig. 3b is a rear view of the same, and Figs. FIG. 2 is a perspective view showing the front end of the tying device, and is an operation explanatory diagram showing sequentially the operation of tying a bundle of yarn by the device. 1...Shuttle, 2...Cot tip, 10...Cot tip automatic exchange device (change device), 70...Weft, 7
0a...New thread, 70b...Old thread, A...Take-out device, C...Setting device, F...Reel device as a thread adjustment device in an automatic tip changer, H
...Old thread pulling device as a thread processing device, I...
...New yarn drawing device as a yarn processing device, J...
Thread tying device.

Claims (1)

[Scope of Claims] 1. A cot tip setting device that performs weaving by making a shuttle storing a cot tip on which a weft is wound fly between upper and lower warps along a shuttle lace, and also exchanges old and new cot tips, and a new and old tip. A thread adjustment device that is attached to a loom equipped with a thread knotting device that ties both ends of the thread, and that disperses the knots of the old and new threads to unspecified positions in the fabric, which has a rotating shaft at the center and a thread knotting device that ties together both ends of the thread. is installed near the shuttle lace so that a circumferential groove for winding the weft is formed, the axis of rotation is substantially parallel to the weft pulled out from the shuttle, and the weft and the circumferential groove are close to each other. a disc-shaped reel; a locking device that protrudes outward from the circumferential groove of the reel and locks the weft close to the circumferential groove; and a locking device that is provided on the rotating shaft of the reel and that is configured to drive the rotating shaft. The reel is characterized by comprising a hook that protrudes outward from the circumferential groove, and that hooks the thread attached to the hook and rotates to wrap the weft around the circumferential groove of the reel. Thread adjustment device.