JPH0429773B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a loom attached to a loom having a shuttle (flying shuttle), for replacing a cot with a weft wrapped therein stored in the shuttle with a new cot. This article relates to a tip exchanger used in

[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 generally short rod-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 reciprocates. If the wrong yarn 4 runs out, the operation of the machine must be stopped, so conventionally, in order to prevent the weft yarn 4 in the shuttle 1 from running out during operation, weaving operations are performed a predetermined number of times and the shuttle is closed. When the remaining amount of the weft threads 4 in the weft thread 1 was running low, a worker standing by the machine manually replaced the weft thread 2. That is, the different threads of the old thread with a small amount remaining are cut and the old thread is removed from the shuttle 1, and a new thread is loaded into the shuttle 1, and the new thread is tied to the old weft by hand. was.

[Problems to be solved by the invention] Since the tip 2 in the shuttle 1 needs to be replaced frequently, a dedicated worker must be assigned to each loom while the machine is in operation, which leads to labor savings. Contrary to requests, there is a problem in that labor costs are high. Additionally, in general, looms that run shuttles at high speeds make a lot of noise during operation, so the working environment for the workers is not necessarily good, and they often suffer from fatigue during work. There was a problem. Therefore, not only from the perspective of cost savings, but also from the perspective of occupational safety and health for workers,
It has been desired to automate and save labor in the tip replacement work, but since the workpiece to be handled is a tip wrapped with thread, which is difficult for a machine to handle, conventionally it has been difficult to automate the tip replacement work. I couldn't do it.

[Objective of the Invention] It is an object of the present invention to provide a tip changer which is attached to a loom using a shuttle and which can automatically change the tip in the shuttle.

[Means for Solving the Problems] The cot tip exchanger of the present invention moves a plurality of shuttles each storing a plurality of types of cots wound with different types of weft threads between upper and lower warps along a shuttle race. In a shuttle changer that is attached to a loom that runs and weaves and replaces an old shuttle tip on a shuttle race with a new shuttle of the same type, a first drive shaft that is rotationally driven parallel to the shuttle race. and a second drive shaft that is provided on the first drive shaft and rotates around the first drive shaft and is rotationally driven around its own central axis; a third drive shaft provided at the tip and driven to rotate around its own central axis and linearly move along the same axis;
At least three hands are provided at the tip of the third drive shaft to grasp the old tip and a plurality of types of new tips, and the plurality of new tips are held at a position away from the shuttle on the shuttle race. is gripped in advance by a plurality of hands, and then brought close to the old tip of the shuttle on the shuttle race by the rotation of the first drive shaft, and further by the rotation of the second drive shaft and the third drive shaft. As a result of the operation, one hand takes out the old tip from the shuttle on the shuttle race, and the other hand successively inserts a new tip of the same type as the old tip from among the multiple types of new tips held in the same position. It is equipped with a rotating arm plate that is set inside the shuttle.

[Operation] Activate the drive shaft, set the rotating arm plate above the old tip in the shuttle at the replacement position, and grasp the old tip with the hand of the rotating arm plate. Then, the old tip is removed from the shuttle by the actuation of the drive shaft and the drive means for rotating and linearly moving the rotary arm plate. The new tip held by the hand of the rotary arm plate is set above the shuttle at the replacement position by the operation of the drive shaft, and the drive means for rotating and linearly moving the rotary arm plate and the operation of the drive shaft. Therefore, it is set in the shuttle.

[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 of FIG. 1 and the drawings of each part. 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. Pillars 14a, 14a of frame body 14
In between, two guide shafts 15, 15 are installed and fixed in parallel to each other. Both guide shafts 15, 15
A drive screw shaft 16 is rotatably installed parallel to the guide shaft 15 in the middle of the guide shaft 15.
One end is operatively connected to a motor M1 fixed on the outside of one of the pillars 14a. 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, by driving the motor M1, the X slider 17 can freely move 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. Also, in the same groove, as shown in FIGS. 3 and 4,
A plurality of positioning members 19 are provided at predetermined intervals. Further, a proximity switch 20 is provided on the lower end surface of the X slider 17 so as to face each of these positioning members 19. And X
When moving the 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. There are also limit switches at both ends of the beam 18.
LS1 and LS2 are provided, and X slider 17
A moving range in the X direction is set.

Next, the X slider 17 has two
Book guide shafts 21, 21 are fixed at one end of each in parallel to each other. A vertically long support plate 22 is fixed to the other end of both guide shafts 21, 21,
The roller 22a provided at the lower end of the support plate 22 is
It is rotatably engaged with a rail member 23 provided on the frame base 13 in parallel with the frame body 14. A drive shaft 24 is provided between the guide shafts 21, 21 in parallel with 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 projects outside the X slider 17. A pulley 25 is fixedly attached to one end of this protruding drive shaft, and is interlocked and connected via a belt 27 to an output pulley 26 of a motor M2 fixedly attached to the upper part of the X slider 17. and the guide shaft 21
A Y slider 28 is slidably provided on the Y slider 28, 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 moves along the guide shafts 21, 21 in a direction perpendicular to the moving direction X of the X slider 17.
can move in the direction. Next, as shown in FIG. 4, the lower end of the support plate 22 and the X slider 1
A connecting plate 29 is installed and fixed between the lower end of the connecting plate 7 and the lower end of the connecting plate 7. A plurality of positioning members 30 are provided on the connecting plate 29 at predetermined intervals.
Further, a proximity switch 3 is provided on the lower end surface of the Y slider 28 so as to face the positioning members 30.
1 is provided. When moving the Y slider 28, if the detection signals of each positioning member 30 generated by the proximity switch 31 are used, the Y slider 28 can be moved.
The Y slider 28 can be moved by a predetermined length in the 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. At the tip (lower end) of the rod of the cylinder CY1 is a mounting plate 3 bent downward into an L-shape.
2 is permanently installed. A drive source 33 is provided on the lower piece of the mounting plate 32, and a stopper 2 is provided at the lower end of the drive source 33.
A hand HA1 is provided for holding the head of the person. This hand HA1 has a pair of bars 3
Another hand HA2 is provided via 4 and 34, and is adapted to grip a rubber cap that is placed over the head of the tip 2 and fixes the end of the thread.

Next, as shown in FIGS. 3 to 5, at a position between the frame body 14 and the rail member 23 on the upper part of the frame stand 13, there is a container 3 for storing a large number of pots 2.
5 can be installed. The setting position of each container 35 with respect to the take-out device of the tip 2 is as follows.
Positioning plate 13a provided on frame stand 13
It is determined by etc. Also each container 35
A large number of short rods are vertically arranged in a matrix on the inner bottom surface of the holder at equal intervals to the respective arrangement intervals of the positioning members 19 and 30 in both the X direction and the Y direction. The short rod 35a is the tip 2
is inserted into a hole 2a in the bottom of the holder to hold each tip 2 in a predetermined position. In this embodiment, both the positioning members 19 and 30 and the proximity switch 2
0, 31, when the X slider 17 and the Y slider 28 are set to desired positions, the hand HA1 provided on the Y slider 28
is set directly above the tip 2 located at a position corresponding to the desired position. In this embodiment, the two shuttles may be loaded with different types of threads, and the two containers 35, 35 are designed to be able to separately store the tips 2 wound with different types of threads. It's summery.

According to the above-mentioned tip removal device A,
By driving both motors M1 and M2 using signals from both proximity switches 20 and 31 and moving X and Y sliders 17 and 28, hands HA1 and HA2 can be moved to arbitrary positions. Further, the cylinder CY1 and hand HA1 can grasp and lift the head of a desired tip 2, and transport it to the next process device.

(B) Delivery device This device is installed on the frame stand 13 between the pick-up device A and the Ko-tip exchanger C described in C, and is used to transfer the Ko-tip chips that are grabbed by the head by the pick-up device A and transported. Grab the bottom of 2 and receive it.
This is a device for passing this to the next process, the switch C of the co-op.

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. 10th
As shown in FIGS. 12 to 12, a base member 36 is fixed to the tip of the rod of the cylinder 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. Swinging member 3
A substantially triangular plate member 38a is provided on the side of the base member 36, and the other end of the spring 39 is attached to the protrusion on the inside thereof.
It is attached to an attachment piece 36b provided on the side. Further, a stopper 36c is provided at the upper end of the plate portion 36a of the base member 36 to protrude toward the swinging member 38 side. Therefore, in the state shown in FIG. 11 where the rod of cylinder CY2 is extended, the swinging member 38 swings upward by the force of the spring 39 and comes into contact with the stopper 36c, and the hand HA3 moves toward the cylinder CY2.
It is configured to face the same direction as the rod.
In addition, the upper mounting jig 40 that attaches the cylinder CY2 to the frame base 13 has an arm-shaped plate 4.
0a is fixedly installed, and the plate material 3 is attached to the tip of the plate 3.
A cam follower 40b that contacts the edge of 8a is rotatably attached. Therefore, cylinder CY2
As the rod is retracted, the plate 38a comes into contact with the cam follower 40b and rotates in a direction that stretches the spring 39. And together with the plate material 38a,
The swinging member 38 and the hand HA3 are configured to rotate downward around the shaft member 37, and when the rod is completely retracted, the hand HA3 becomes horizontal as shown in FIG. has been done. In addition, numeral 41 in the figure is a device that presses the ends of the weft yarns so that they do not come apart when the hand grasps the tip.

According to the delivery device B having the above configuration, as shown in FIG. 9, the rod is retracted and the hand HA is
The tip 2 is received from the take-out device A at a position where the rod 3 is horizontal, and the tip 2 can be delivered to a tip exchanger C to be described later at a position above the extended rod as shown by the imaginary line.

(C) Cop Switching Machine As shown in FIG. 5, on the frame stand 13 next to the above-mentioned takeout device A, there is installed a coppice switching machine C, which is a main part of this embodiment. As shown in FIGS. 13 and 14, a pedestal 42 fixed on the frame 13 has a first
A drive shaft 43 (hereinafter referred to as a first shaft 43) is rotatably provided, and one end of the first shaft 43 passes through one bearing 42a and projects 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 rectangular base plate 46 is fixed to the first shaft 43 via a bracket 45. Stopper members 46a are provided at the front and rear portions of the lower surface of the base plate 46, respectively. Further, shock absorbers 47, 47 are provided on the pedestal 42 so as to come into contact with both the stopper members 46a, 46a, respectively.
are provided for each. Therefore, the base plate 46 and the device group provided on the base plate 46 are connected to the first axis 43.
It is configured to be able to swing within a predetermined angular range around the center.

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. The rear end of the second shaft 49 is
It is interlocked and connected to the output shaft of a rotary actuator 50 fixedly mounted on the base plate 46 via a bracket 50a via 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 can reach the replacement position of the stopper 2 on the shuttle race 12 of the loom, and 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. Shaft case 5
A third drive shaft 53 (hereinafter referred to as the third shaft 53) is provided inside the drive shaft 2 so as to be rotatable via a pair of bearings and not to move in the axial direction. ing. The third shaft 53 has a cylindrical shape, and a boss 5 having a spline groove on the inner peripheral surface at the opening at the upper end.
3a is inserted and fixed. 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, three arms 5 are attached to the tip of the fourth shaft 54.
A windmill-shaped rotating arm plate 55 having a diameter of 5a is attached via a mounting bush 56 or 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. A hand HA4 is provided at the tip of each arm 55a, and is configured to be able to grip the tip 2 in a posture parallel to the third shaft 53 and the fourth shaft 54. Then, the housing 5
1, a servo motor M4 is attached to the lower surface on the opposite side to the shaft case 52, and its output shaft is connected to the third shaft 53 via a joint. Therefore, if the servo motor M4 rotates 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 arbitrarily. It can only be rotated by an angle. Further, a cylinder CY3 is provided on the peripheral wall of the shaft case 52 in parallel with the third shaft 53 and the fourth shaft 54.
is permanently installed. 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, by operating the cylinder CY3 to extend and retract the rod, the fourth shaft 54 and the hand HA
4 can be slid along the axis.

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

According to the Kotap exchange C having the above configuration, the Kotop 2 is received from the transfer device B at the upper position shown by the imaginary line in FIG. It is possible to perform tasks such as setting the shuttle to the shuttle 1, or grabbing the old tip 2 and taking it out.

As shown in FIG. 1, a funnel-shaped tip 58 is provided next to the exchanger C, and is configured to dump the old tip 2 taken out from the shuttle 1 by the exchanger C. There is.

(D) Shuttle drawer device As shown in Figures 1, 17 and 18,
A beam member 59 is provided above the shuttle race 12 of the loom, and a wall body 60 is attached to the beam member 59 in order to mount various devices constituting the automatic tip changer 10. In Figure 17,
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
is used to pull out the shuttle 1, which has flown on the shuttle race 12 and entered the shuttle box 11, onto the shuttle race 12 in order to replace the tip. A pair of brackets 6 are installed on the lower surface of the mounting frame 61 with the tips of the rods facing the shuttle box 11 and parallel to the shuttle race 12.
Cylinder CY4 is fixedly installed via 2 and 62. 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. There is. 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 the rotary actuator 65 penetrates through the connecting plate 64 and protrudes toward the shuttle box 11 side. The output shaft of
A swing arm 66 is fixedly installed. Swing arm 6
A suction tube 67 is provided at the tip of the shuttle race 12 in parallel with the shuttle race 12, and a vacuum part 6 is provided at the tip of the suction tube 67 to hold the shuttle under suction.
7a is attached. At the rear end of the suction tube 67, the suction tube 67 and the vacuum patch 67 are connected.
A suction tube 67b is provided which communicates with
It is designed so that it can be attached to a. 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, the rotary actuator 65 swings the swinging arm 66 upward, and the vacuum part 67
A, etc. are evacuated to the upper position. When replacing the shuttlecock 2, swing the vacuum part 67a and lower it to a position directly above the shuttle race 12.
Extend the rod of cylinder CY4 and move shuttle 1 in shuttle box 11 to vacuum part 6.
7a, and further retracts the rod of cylinder CY4 to pull out the shuttle 1 in the box 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 changer 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, and
It is composed of a hand HA5 provided at the tip of the rod of 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. The thread presser E1 includes a cylinder CY6 that expands and contracts in the vertical direction, and a presser plate 68 connected to a rod of the cylinder CY6. According to these devices, when replacing the shuttlecock, the shuttle 1
One end of the weft on the weaving 69 side, which is derived from the threads and woven between the warps on the shuttle lace 12, is held on the shuttle lace 12 by the presser plate 68 of the thread presser E1.
It is pressed and fixed between. The thread pulling device E is configured to grasp the different thread 70 with a hand HA5 and pull it toward the user using 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 devices etc. wind the weft yarn 70 on the reel device F explained in the next section F, and tie the knot N between the new and old weft yarns.
This is provided to adjust the position of the

(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 irregular 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. Rear end surface of block body 71 (frame base 1
A motor M5 is attached to the third side 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 disk-shaped reel 73 is fixedly provided, which has a circumferential groove section 73a for winding a thread around its outer circumference. The output shaft 72a of the reducer 72 driven by the motor M5 is
It is connected to one end of a rotating shaft 74 inside the block body 71, and the other end of the rotating shaft 74 is supported by a bearing 73b provided at the axial center of the reel 73 and projects toward the front end surface of the reel 73. . This rotating shaft 74
A through hole 74 perpendicular to the axial direction is provided on the circumferential surface of the protrusion.
A is formed in the through hole 74a, and a guide rod 75 is slidably inserted into the through hole 74a via metal. A hook 76 for hooking the weft 70 and winding it around the reel 73 is fixed at one end of the guide rod 75, and the hook 76 is in contact with the front end surface of the reel 73. A substantially spiral guide groove 77 is formed on the front end surface of the reel 73 over about two circumferences. This guide groove 77 consists of a circular outer peripheral groove 77a and an inner spiral groove 77b.
7b is continuous with the outer circumferential groove 77a, and a point plate 78 is swingably provided at the meeting point of both. In this guide groove 77, the hook 7 is provided.
A roller member 76a rotatably attached to the roller 6 is engaged with the roller member 76a.

Next, a locking tool 79 is fixedly provided on the lower rear end surface of the reel 73 for hooking the weft yarn 70 that is drawn around by the rotating hooking tool 76. 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. Further, a thread guide 81 is provided 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, and guides the different thread 70 drawn by the hook 76 around the reel 73. It is configured so that it can be guided into the groove portion 73a. Also, this thread guide 8
A tactile switch 82 is provided near 1 so that the number of windings of the yarn 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 and moves toward the outer circumference. When the hook 76 rotates once from the rotation start position, the hook at the tip of the hook 76 protrudes outward from the outer periphery of the reel 73.
The drawn-out weft 70 connected to the locking tool 79 can be hooked and wound around the circumferential groove portion 73a of the reel 73.

Since the length of the old yarn from the already woven weave 69 to the shuttle 1 is almost constant, the new yarn 70a
When weaving is continued by simply tying the old and old yarns 70b, knots N of both the new and old yarns appear repeatedly at predetermined positions during weaving, as shown in Figure 19 (b), and the knots N are connected in the warp direction. Sometimes I get angry.
This means that the properties of the fabric change at specific locations, which is undesirable. Therefore, if the reel device F of this section is used and the old weft yarn 70 is wound up different times before cutting the old weft yarn and removing the old weft yarn when replacing the cot tip 2, the weft yarn created after tying the yarn can be The positions of the knots N can be arbitrarily scattered throughout the weaving 69 as shown by C in FIG. Furthermore, when the thread is wound up after tying, the play of the wrong thread near both the new and old tied threads is removed, thereby preventing accidents such as the wrong thread getting entangled with equipment. Further, as will be described later, the thread knot N can be pulled out from the hole 1b provided in the front of the shuttle 1.

(G) Shuttle holding device, etc. As shown in FIG. 1 and FIG.
and cylinder CY8 as the tip presser G1.
are arranged side by side. Both cylinders CY7,
CY8 is located directly above shuttle race 12,
Rod is facing downwards. When the shuttle pull-out device D pulls out the shuttle 1 from the shuttle box 11 onto the shuttle race 12, the exchanger C raises the old cup 2 in the shuttle 1 to a vertical position as shown in FIG. 2a. Cylinder CY7
operates at this time and holds down the front end of shuttle 1,
To prevent a shuttle 1 from floating above a shuttle race 12. When the replacement of the tip 2 is completed, the exchanger C inverts the new tip 2 horizontally into the shuttle 1, but the cylinder CY8 operates at this time and presses the head of the new tip 2 and holds it in the shuttle 1. Push it in, confirming that the new tip 2 has been properly stored in the shuttle 1, and at the same time confirming 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 consists of a cylinder CY9 installed in water with the tip of the rod facing the thread tying device J, which will be described later.
and a thread pulling rod 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. To do this, it is necessary for the exchanger C to remove the old weft 2 from the shuttle 1 by cutting the old different threads, but during this time and until the process of tying the new and old wefts 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 is mounted on the front side of the mounting bracket 85.
CY10 is installed vertically downward. 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
When the rod is pulled up by driving the wall 6
oscillating arm 88 oriented perpendicular to 0;
The central portion of the suction tube 89 can be inserted into the suction tube 89 by passing through the notch grooves 89a. 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 held in a substantially vertical position by the exchanger C, but the present tip tip H1 is held by a pair of swingable holding plates 91, 91. It is configured so that it can be done. Further, one holding plate 91 has a substantially S-shaped rod-shaped thread guide 9.
2 is provided, and as shown in FIG. 2a, the swing arm 88 of the old thread pulling-in device H
After pulling up the thread into a triangular shape, open the holding plate 91 and pull the old thread 70b horizontally with this thread guide 92. It is configured to be cut by.

(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. A new thread pulling device I is provided.

As shown in FIGS. 24 and 25, the wall 60
is provided with a slide rail 94, and a slide block 95 is movably engaged with the slide rail 94. Two bracket plates 96a and 96b are fixed to the side surface of the slide block 95. At the tip of one bracket plate 96a is a cylinder CY fixed to the wall 60.
Eleven rods are connected to each other so that the slide block 95 can be freely moved up and down along the slide rail 94. A hollow box-shaped base body 97 is swingably attached to the tip of the other bracket plate 96b by a shaft bolt 97a. On the bottom surface of this base 97,
A suction pipe 98 for inserting the new tip 2 erected on the shuttle race 12 is connected and communicated with it. 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, so that the end of the new thread wound around the new thread can be loosened by wind pressure. It's summery. Also, the base 97
A suction duct 99 connected to a suction means (not shown) is connected and communicated with the upper surface of the suction cylinder 9.
It is configured such that the new thread tip 2 stored in the duct 8 can be sucked and the end of the new thread can be sucked into the duct.

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

The device I configured as described above has the following functions for the shuttle 1 pulled out onto the shuttle race 12:
It is designed to operate when the new tip 2 is set in the vertical position as shown in Figure 2a. 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 means tying two threads 7 aligned.
In this binding method, 0a and 70b are crossed to form a loop, and a knot is created by passing the portion other than the ends through the loop. 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. The position of the knot N inside is scattered. Furthermore, if the knots N of the weft yarns 70 are tied in a bundle, the knots N of the woven weft yarns 70 can be untied by hand after weaving is completed, which eliminates the unevenness of the fibers caused by the knots N. can do.

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. A thread tying device J is installed inside the mounting frame 61 so as to be slidable in horizontal and lateral directions. Also, inside the mounting frame 61 is a cylinder parallel to the shuttle race 12.
CY13 is permanently installed. And cylinder CY
The rod 13 is connected to the thread tying device J, and the entire thread tying device J is located at the thread tying position on the right side of the figure (almost directly below the raised new thread pulling device I).
It is now possible to expand into

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. A guide groove 110b for positioning the introduced yarn 70 is formed in the center. A mounting plate 111 is vertically fixed to the bottom plate 110 at approximately the center thereof, and support columns 112 are erected on both sides of the front side. These mounting plates 111
An upper plate 113 having an introduction part 113a and a guide groove 113b of the same shape and at the same position as the lower plate 110 is horizontally fixed to the support column 112.
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 fixedly fixed perpendicularly to the back surface of the mounting plate 111. This guide 114 has a slide tube 1
15 is inserted, the front end of the slide tube 115 protrudes forward from the shaft hole, and the rear end protrudes rearward from the opening rear end of the guide 114. Further, a spiral guide groove 116 is formed on the outer peripheral surface of the slide tube 115, and a guide pin 114a protruding from the inner peripheral surface of the guide 114 is formed in this guide groove 116.
is engaged. Further, a cylinder CY14 is fixed to the outer peripheral surface of the guide 114, and 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. ing.

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 CY15 is fixed to the bush 117 via a mounting plate 117a, and the rod of the cylinder CY15 is connected to the rear end of the operating shaft 118. Further, a U-shaped base frame 11 is provided at the front end of the slide tube 115.
9 is fixedly installed. Two shafts 120, 1 are provided between the upper and lower flanges 119a, 119a of the base frame 119.
20 are provided parallel to each other, and both shafts 12
At the upper and lower positions of 0 and 120, a total of four claw plates 121 with their tips facing inward are each rotatably provided. The upper pair of claw plates 121, 121 and the lower pair of claw plates 121, 121 are interlocked and connected by a link mechanism, respectively, and constitute two sets of upper and lower gripping claws 122, 122. And a link mechanism 123 connecting both shafts 120, 120
The front end of the actuating shaft 118 is rotatably connected to the actuating shaft 118.

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 be twisted 180° by grasping the object.

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. 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, Y sliders 17, 28 along the respective guide shafts 15, 21, and both positioning members 19, 3 output by 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 H1 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, in the extended position as shown by the imaginary line in FIG.
give. In this embodiment, two types of tips 2 with different weft types are to be exchanged alternately, and two of the three hands HA4 of the exchanger C are designed to grip the other type of tips 2. The remaining hand HA4 is now used to handle the old Kotup 2.

Now, when the weft threads 70 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. 17, the shuttle drawer D operates to pull the shuttle 1 from the shuttle box 11 to the shuttle race 1.
2 Pull it out. Next, as shown in Figure 19,
Cylinder CY6 operates and presser plate 68 descends,
The weft yarn 70 on the side of the weave 69 is fixed. Also, before and after this operation, the thread pull-out device E operates, and the thread guide E
2 and the presser plate 68, the weft 70 is pulled out in a triangular shape toward the front side, and the weft 70 is delivered to the reel device F in order to break up the knot N as described above, and the old weft is wound an appropriate number of times to remove the weft 70. Make adjustments.

Next, the switch C of the switch 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 hold the head of the old cup 2 which is placed upside down in the pulled out shuttle 1. Then, actuate 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 CY71 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 the tip exchanger C operates again. As mentioned above, the tip switch C at this time was almost the 9th one.
The user is in the posture shown by the solid line in the figure, and is in a state where the head of the old tip 2 attached to the shuttle 1 is in a vertical position. Therefore, the cylinder
CY3 is activated to drive the fourth shaft 54 upward, and the rotating arm plate 55 and hand HA4 are moved upward.
As shown in Figure 3, raise it in the direction of arrow D. Since the old tip 2 held by the hand HA4 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
The selection is made depending on which of the new tips 2 held by the HA 4 is to be installed in the shuttle 1, and its rotation angle is approximately 120 degrees. That is, the old tip 2 is removed from above the tongs 3 of the shuttle 1, and the new tip 2 is set directly above the tongs 3. Then, the cylinder CY3 is retracted and the new tip 2 is inserted into the tongue 3 of the shuttle 1. And this new tip 2
The hand HA4 that was gripping opens, the servo motor M4 rotates slightly, and the hand HA4 is evacuated from near the head of the new tip 2.

Next, a new yarn drawing device as a yarn processing device is activated. First, the cylinder CY11 is activated, and the suction duct 99, suction tube 98, etc. are lowered. 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 tube 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 rocking 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 release the grip that moved the swing plate 100 in the base body 97, and the end of the new yarn 70a is allowed 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 exchanger C is driven to rotate the rotary arm plate 55, and the hand HA4 Press the head of Shin-Koppu 2 to prevent suction from sucking too much thread. At the same time, the cylinder CY9 of the thread tying device G2 is activated, 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. The ends of both the new and old threads 70a, 70b enter the upper and lower guide grooves 110b, 113b from the upper and lower introduction parts 110a, 113a of the thread tying device J.

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, each set of the old and new threads 70a, 70b is collectively represented by one line for the sake of simplicity. That is, in the following explanation, the weft 70 refers to both the old and new yarns 70a,
It represents the group 70b.

(1) First, operate cylinder CY15 and
18, and the weft 7 is pulled by the two sets of gripping claws 122, 122 and the upper and lower thread presser clamping claws (not shown).
Grab 0. (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 weft thread 70 by 180° while pulling it. (Figures 34 and 35) (3) Operate the actuator to press the lever 124.
is rotated upward by 90 degrees, and the intersection of the weft threads 70 drawn by the gripping claw 122 is pushed 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 weft threads 70, and
The pressing bar 127a of the large claw 127 pushes down one set of gathered weft yarns 70 (70a+70b). After this, the pressing lever 124 returns downward.
(Fig. 37) (5) Operate cylinder CY17 and clamp claw 129
is moved forward, and the weft 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
Figure) and gripping claws 122, 122, large claws 127
Then, the locking of the weft thread 70 by the small claw 126 is released.

(6) The cylinder 125 waiting behind the lower guide groove 110b is operated to push out the weft 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 threads are tied into a bundle knot as shown in Figure 32, and at the same time, the unnecessary part is cut off with a heat cutter 13 at a position above the knot (not shown).
4. (Figures 40 and 41
(Figure) 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 exchanger 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 inversion operation of the new cot tip 2 by the cot tip changer C, the reel device F is operated again to wind up the weft. Then, when the new tip 2 is set in the shuttle 1 and the play of the weft yarn 70 is wound up by the reel device F, the cylinder CY8 as the tip presser G1 is activated. That is, as shown in FIG. 17, the new tip 2 is firmly pushed into the shuttle 1 by pressing the head of the new tip 2 downward with the tip of the rod, and at the same time, the new tip 2 is pushed into the shuttle 1 by a reed sensor (not shown). Confirm the existence of 2.

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. The motor M5 of the reel device F is reversed once 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 drawer D pulls the shuttle 1 out of the shuttle box 11. Push it inside. and,
The shuttle 1 that flies through the shuttle pull-out device D
The hand HA5 of the thread pulling device E is released while swinging and retracting upward so that it does not become an obstacle.

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 taken out of the shuttle, by means of a tip changer C that operates independently in both 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, handles the new and old threads. It is now possible to tie both threads together. 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 this embodiment, it is possible to automate the work of replacing the threads, which could only be done manually in the past, especially the work of replacing threads in bag weaving in which tied and continuous wefts are woven. be able to.

[Effect of the invention] As explained above, the tip exchanger of the present invention has the following effects:
In a loom that performs weaving using a plurality of types of weft yarns, a shortened old weft of a specific type is replaced with a new weft of the same type in one operation. For this reason, the device of the present invention has a rotary arm plate provided with at least three hands for gripping an old tip and a plurality of new tips at the same time, and is driven by three rotating or linear drive shafts. The rotating arm plate can be moved freely in four directions. According to such a configuration, the old tip and a plurality of types of new tips can be freely handled at the same time in one position. Therefore, according to the present invention, the type of new tip to be set can be selected according to the type of the old tip from which it was taken, and the removal of the old tip and the setting of a new tip of the same type as the old tip can be done in one process. It can be done efficiently by continuous work.

As described above, according to the present invention, it is possible to automate the tip replacement work on a loom that uses multiple types of wefts, which could only be done manually by workers in the past. This has the effect of not only improving efficiency but also saving labor and reducing work costs.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the present invention, and is a perspective view showing a state in which a frame base on which a tip exchanger, etc. is installed has been moved toward the front along an arrow, and FIG. 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 diagram showing various devices installed on the frame stand including the take-out device and the tip exchanger, 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. A right side view showing the main parts of the delivery device in the position to receive the tip,
FIG. 11 is a right side view showing the delivery device in operation;
Fig. 12 is a front view of the delivery device, Fig. 13 is a partially cutaway right side view of the tip exchanger, Fig. 14 is a sectional view taken along the a-a cutting line in Fig. 13,
Figure 5 is a plan view of the second shaft and rotary arm plate of the tip exchanger, Figure 16 is a partial sectional view of the vicinity of the third and fourth axes, which are the tips of the tip exchanger, and Figure 17 is a view above the shuttle race. Fig. 18 is a front view showing the installed thread tying device and old and new thread pulling device, etc.; Fig. 18 is a cross-sectional view from the right side showing the thread tying device and shuttle drawing device provided above the shuttle lace; Fig. 19 20 is a cross-sectional view of the reel device, FIG. 21 is a view of the reel of the reel device as seen from the shuttle race side, and FIG. The figure is a front view of the old thread pulling device as a thread processing device.
Fig. 23 is a right side view of the thread drawing device, Fig. 24 is a front view of the new thread drawing device as a thread processing device,
Fig. 25 is a right side view of the new thread pulling device, Fig. 26 is a sectional view of the base of the new thread drawing device, Fig. 27 is a sectional view taken along cutting line bb in Fig. 26, and Fig. 28 is a thread knot. 29 is a plan view of the thread tying device, 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, and FIG. 32 is a sectional view of the device as seen from the front side. FIG. 33A is a plan view of a knot of both new and old threads tied in a bundle, FIG. 3B is a rear view of the knot, and FIGS. FIG. 3 is an operation explanatory diagram sequentially showing the operation of tying a bundle of yarn. 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...Cop changer, F...Reel device as a thread adjustment device, H...Old thread pull-in device as a thread processing device, I... New thread pulling device as a thread processing device, J... Thread tying device.

Claims (1)

[Scope of Claims] 1. A loom attached to a loom that performs weaving by making a plurality of shuttles each containing a plurality of types of cots wrapped with different types of weft threads fly between upper and lower warp threads along a shuttle lace. In a tip changer for exchanging an old tip of a shuttle on a shuttle race with a new tip of the same type, the first drive shaft is rotatably driven parallel to the shuttle race, and the first drive shaft is provided with: a second drive shaft that is rotated around the first drive shaft and rotationally driven around its own central axis; a third drive shaft that is rotationally driven around the periphery and linearly moves along the same axis; and at least three hands for gripping the old tip and the plurality of types of new tips. After gripping a plurality of types of new tips in advance with a plurality of hands at positions separated from the shuttle on the shuttle race, which are provided at the tip of the shaft, the shuttle on the shuttle race is gripped by the rotation of the first drive shaft. , and by rotating the second drive shaft and operating the third drive shaft, take out the old tip from the shuttle on the shuttle race with one hand and hold it with the other hand. A cot tip exchanger comprising a rotary arm plate that successively sets new cots of the same type as an old cot out of a plurality of types of new cots in the same shuttle at the same position.