JPH07102451A - Position-adjusting apparatus of tuck-in apparatus - Google Patents

Abstract

PURPOSE:To provide a tuck-in apparatus for a shuttleless loom to form a selvedge texture similar to the texture formed by a shuttle loom, capable of easily adjusting the longitudinal position of the tuck-in apparatus during the operation of loom and enabling the lateral positioning with simple operation in a state of fixed temple. CONSTITUTION:Cam followers 42, 43, 44 contacting with cams 20, 22, 24 driving a gripper 30 and a needle 28 of a tuck-in apparatus are attached to arms 35, 36, 37. Eccentric parts 39, 40, 41 are formed on the supporting shaft 13 of the arms 35, 36, 37. Swinging levers 48, 49, 50 are pivoted to these arms and the intermediate parts are forced 51, 52, 53 to be pressed against the eccentric parts. The tips of the swinging levers are interlocked with mobile members 19, 21, 23 connected to the gripper 30 and the needle 28. The tuck-in apparatus having fixed temple 9 is loaded on a frame 4. A positioning block 7 fixed to a front bar 1 is provided with a rotatable and non-slidable screw 8 screwed into the frame 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven cloth having an ear structure similar to that of a woven cloth woven by a shuttle loom by folding the front end of the weft thread inserted into the woven cloth side in a rapier room or an air jet room. The present invention relates to a tuck-in device formed at the end of the tuck-in device, and more particularly to a device for adjusting the distance between the cloth fell and the needle, that is, the position of the tuck-in device in the longitudinal direction and a device for adjusting the position of the tuck-in device in the width direction. .

[0002]

2. Description of the Related Art A conventional tuck-in device is disclosed in Japanese Patent Laid-Open No. 57-57
As disclosed in Japanese Laid-Open Patent Application No. 193557 and Japanese Utility Model Publication No. 3-22300, a second moving body that swingably supports a gripper that grips a weft end, and a gripper that moves relative to the second moving body. A first moving body having a swing pin that moves the needle up and down, and a third moving body to which a needle is fixed.

FIG. 5 shows a cam mechanism for moving the first moving body 19 forward and backward. The first moving body 19 is slidably mounted on the front wall of the casing 3, and its base end is connected to the tip of the first arm 35 pivotally supported by the support shaft 13 via a connecting member 58. Has been done. A first cam follower 42 is axially attached to an intermediate portion of the arm 35. The cam follower 42 is fixed to the cam shaft 12 by a tension spring 51 stretched between a front wall of the casing and the arm. It is in contact with the cam 20. Since the cam mechanism of the second moving body is similar to the cam mechanism of the first moving body 19, its description is omitted.

FIG. 6 shows a cam mechanism for advancing and retracting and rotating the third moving body. The third moving body 23 is slidably supported by the front wall and the rear wall of the casing 3, and a block body 62 mounted by two flanges 61 so as to be immovable in the axial direction is mounted near the rear wall. The sleeve 63 is fixed near the front wall. The spindle 13 has a first
The third arm 37 having the same structure as the above arm is supported, and its tip and the block body 62 are connected by a pin. A fourth arm 38 extending parallel to the third moving body 23 is mounted on the support shaft 13, and a fourth cam follower 54 is axially mounted in the middle of the fourth arm 38. Arm 38
A cam follower 54 is attached to the tip of the
A fourth tension spring 55 that comes into contact with the cam 25 is provided, and a connecting rod 57 is further suspended via a spherical joint 56. The tip end of the connecting rod 57 and the outer peripheral portion of the disk 64 fixed to the sleeve 63 of the third moving body are connected by a spherical joint 65.

A temple 9 is provided in front of the casing 3 of the tuck-in device, and a woven fabric 67 is stretched around the temple 9. The temple 9 pulls the woven fabric 67 in a direction to expand it in the width direction, and regulates the position of the warp 68 of the selvage.

FIG. 7 shows the tuck-in operation of the conventional tuck-in device step by step. When the weft is inserted, the repulsion is first performed. During this beating, the first to third
Of the tuck-in device is retracted so as not to interfere with the reed 73 (Fig. 7).
(A)). When the reed starts to retreat, the first to third moving bodies advance so as to follow it, and advance the tuck-in device to a predetermined operating position. At this time, the third moving body slightly advances further than the first and second moving bodies to start rotation, and the needle 28 is inserted into the opening of the warp 68 of the selvage. Along with this needle insertion operation, the gripper 30 is closed and the weft tip 33 between the weaving selvage 70 and the entwined yarn 71 is gripped (FIG. 7 (b)). Then, the needle 28 is slightly retracted and moved to a position away from the cloth fell 11 by a distance x. Prior to this moving operation, the first moving body slightly moves forward with respect to the second moving body to move the gripper 30 downward, so that the needle 28 enters just above the tip of the weft thread held by the gripper. (Fig. 7 (c)).

Next, the gripper 30 is moved upward by moving the first moving body relative to the second moving body (FIG. 7D), and then the first moving body and the second moving body are moved. By retracting the body and the weft at the same time, the weft yarn tip 33 is pulled back to the cloth fell side, and the weft yarn tip 33 is wound around the hook 72 at the tip of the needle 28 (FIG. 7).
(E)). Then, at the position where the gripper 30 has moved to the cloth fell side, the first moving body moves forward again to move the gripper 3
0 moves downward, and the weft yarn tip 33 is cut between the swinging blade of the gripper and the fixed blade 32 at the lower moving end (Fig. 7).
(F)). Immediately after this operation, the needle 28 moves to the hook 72.
While pulling out the weft yarn tip 33 hooked on the gripper 30 from the gripper 30, the weft yarn tip 33 is folded back into the opening of the warp yarn 68 at the selvage (FIG. 7).
(G)). At the end of this tuck-in operation, the next weft thread is inserted into the warp opening, and the weft tip folded back by the repulsion operation after the tuck-in device is retracted and the next weft thread are simultaneously driven.

[0008]

In order to surely perform the tuck-in operation, it is necessary to surely perform the operation of gripping the tip of the weft by the gripper 30 and hooking it on the tip of the needle 28 ((in FIG. 7). (c) to (e)), it is necessary to secure a constant distance x between the cloth fell 11 and the needle 28. When the distance x between the needle and the cloth fell is large, the weft thread tip 3
3 does not wind well around the needle 28, resulting in an error in the tuck-in operation ((a) of FIG. 8). If this distance x is too small, excessive tension is applied to the tip of the weft when the needle 28 handles and returns the weft tip 33, and due to the residual tension, the weaving width is shortened after the beating and the ear drop occurs. When the reed is beaten in such a state, the warp 68 of the ear portion is handled by the reed 73 and the warp breakage frequently occurs ((b) of FIG. 8). Such a phenomenon is likely to occur when the warp wound around the beam has uneven tension.

Depending on the type of weft thread, the width of the woven fabric 67 may shrink after beating, or conversely, the width of the woven fabric 67 may expand. In such a case, the temple 9 is moved to adjust the warp 68 of the selvage, but if the distance y between the selvage and the cutting position of the tip of the weft gripped by the gripper 30 is narrow, the weft tip will work well for the needle. There is a mistake in the tuck-in operation without winding. If this distance y is too large ((a) of FIG. 9), the folded back length becomes long, and there arises a problem that the tip of the weft is exposed from the warp insertion opening of the needle and the fluff 74 stands up ((b) of FIG. 9). ).

Therefore, in the past, regarding the former problem, an operator observes the condition of the cloth fell during the weaving operation, and when the ears become loose, the loom is stopped and the needle, grabber and swing pin are moved back and forth. The distance x was adjusted to be the optimum value. Regarding the latter problem, the temple is fixed to the casing of the tuck-in device so that the distance y between the cutting position of the weft yarn tip and the selvage is constant.

However, in the tuck-in device having the conventional structure,
There is a problem that the front and rear moving work is troublesome, and the loom must be stopped during the moving work, which lowers the operating rate of the loom. Further, in the case where the temple is fixed to the casing of the tuck-in device, the tension of the woven fabric is transmitted to the tuck-in device through the temple, so that the tuck-in devices are pulled toward each other, and the tuck-in device is separated from the tuck-in device. There was a problem that it took a lot of power to move to.

A first object of the present invention is to obtain a position adjusting device for a tuck-in device which can easily adjust the front-rear position of the tuck-in device while the loom is operating. A second object of the present invention is to provide a position adjusting device capable of positioning the tuck-in device in the width direction with a simple operation while the temple is fixed.

[0013]

The tuck-in device according to the present invention has a cam shaft 12 arranged in parallel with the cloth fell 11. 3 is arranged on this cam shaft in parallel with the warp 68.
Three cams 20, 22, 24 for moving the moving bodies 19, 21, 23 back and forth, respectively, and one of the three moving bodies
A cam 25 for rotating the book is fixed, a swing pin 26 is fixed to the first moving body 19, and a fixing bracket 27 is fixed to the second moving body 21.
A needle 28 is fixed to the third moving body 23.
The swing bracket 29, which is swingably supported by the fixed bracket 27, is linked to the swing pin 26, and the gripper 30 provided on the swing bracket 29 is connected to the first movable body 19 and the second movable body 19.
The weft yarn tip 33 gripped by the gripper 30 is hooked on the needle 28 by the relative movement and the simultaneous movement of the third moving body 21 and the weft yarn tip 33 is cut by the fixed blade 32 attached to the fixing bracket 27. The needle 28 is rotated by the rotation operation, and the weft tip 33 that is hooked is folded back to the woven fabric side.

The front-rear direction position adjusting device of the present invention in the tuck-in device is capable of swinging arms 35, 36 and 37, which have cam followers 42, 43 and 44 abutting against the cams 20, 22 and 24 and which are pivotally attached at one end. Support shaft 13
Eccentric portions 39, 40, 41 are provided on the arm, and swinging rods 48, 49, 50 are pivotally attached to the arm and urged 51, 52, 53 so as to press the intermediate portion thereof to the eccentric portion. It is characterized in that the tip end of the swing rod and the moving bodies 19, 21, 23 are linked.

A widthwise position adjusting device for a tuck-in device according to the present invention comprises a temple 9 fixed to the tuck-in device,
This tuck-in device is mounted on an underframe 4 slidably and fixedly attached to the front bar 1, a positioning block 7 is fixed to the front bar 1 outside the underframe 4, and the positioning block 7 is rotatable. In addition, the threaded rod 8 provided so as not to slide is screwed to the underframe 4.

[0016]

The position adjusting device for the tuck-in device according to the present invention comprises the arms 35, 3 to which the cam followers 42, 43, 44 are mounted.
The eccentric parts 39, 40, 41 are attached to the support shaft 13 for supporting 6, 37.
Is provided, and the support shaft 13 is turned to rotate the eccentric parts 39, 40, 4
The tuck-in device is moved back and forth by pushing the rocking rods 48, 49, 50 by the cam action with 1 to change the relative angle with the arms 35, 36, 37. It is possible to easily change the advancing position and the retracting position of the moving bodies 19, 21, and 23. Since the movement of the contact position can be performed easily and quickly while the loom is operating, it is not necessary to stop the loom. Further, since the position adjusting device of the present invention moves the tuck-in device in the width direction by rotating the screw rod 8 provided on the positioning block of the front bar, it can be easily moved against the tension of the woven cloth. be able to.

[0017]

1 to 4 show an embodiment of the present invention. FIG. 3 is a perspective view of the tuck-in device as seen from the front side of the loom, and the tuck-in devices 2 are arranged at both left and right ends of the front bar 1. The underframe 4 supporting the casing 3 of the tuck-in device 2 is slidably provided on the upper surface of the front bar 1, and the tips of the bolts 5 mounted on this underframe 4 are fitted into the T-grooves 6 of the front bar. It is screwed into a piece (not shown). A positioning block 7 defining the position of the underframe 4 is fixed to the outside of the underframe on the front bar 1, and the underframe is attached to the tip of a screw rod 8 provided on the positioning block 7 so as to be rotatable and non-slidable. 4 is screwed.
The position of the underframe 4 in the front bar 1 is determined by rotating the screw rod 8 of the positioning block, and then fixed by fastening the bolt 5.

A temple 9 is supported by a bracket 10 fixed to the casing 3 on the front side (back side in FIG. 3) of the casing 3 fixed to the underframe. A cam shaft 12 and a support shaft 13 extending parallel to the cloth fell 11 are mounted on the casing 3, and the cam shaft 12 is connected to a crank shaft of a loom by a gear train (not shown). A disc 14 is fixed to the end of the support shaft 13 protruding from the casing 3, and a handle 15 is fixed to the disc 14. The lower part of the disc is pressed against the casing 3 by a pressing piece 17 fastened to the casing 3 with bolts 16. When rotating the support shaft 13, the bolt 16 may be loosened, the handle 15 may be rotated by a desired angle, and the bolt 16 may be tightened again to fix the disc 14.

FIG. 4 is a plan view of the tuck-in device when the casing lid is removed. Cam shaft 1 of casing 3
2 includes the first moving body 1 from the upper side of the figure (the ear side of the fabric).
The first cam 20 for advancing and retracting 9 is fixed, the second cam 22 for advancing and retracting the second moving body 21 is fixed, and the third cam 24 for advancing and retracting the third moving body 23 is fixed, and A fourth cam 25 that rotates the third moving body 23 is fixed. A swing pin 26 is fixed to the tip of the first moving body 19, a fixing bracket 27 is fixed to the tip of the second moving body 21, and an arc-shaped needle 28 is attached to the tip of the third moving body 23. Is stuck.

A swing pin 26 is connected to a swing bracket 29 that is swingably provided on a fixed bracket 27. The swing bracket 26 is connected by the relative movement of the first moving body 19 and the second moving body 21. 29 can be swung in the vertical direction. A gripper 30 is provided at the lower end of the swing bracket 29, and the end surface of the gripper 30 on the first moving body side serves as a swing blade. A fixed blade 32 is provided at the lower end of the fixed bracket 27 so as to be in sliding contact with the swing blade, and the relative movement between the fixed bracket 27 and the swing bracket 29 cuts the weft yarn tip 33 gripped by the gripper 30.

In FIG. 4 and FIG. 1 showing the section A in FIG. 1 and FIG. 2 showing the section B, four arms 35, 36, 37 and 38 are provided on the support shaft 13 mounted on the casing 3. Eccentric parts 39, 4 which are rotatably supported and are deviated by an equal distance from the first arm to the vicinity of the third arm.
0 and 41 are provided. Cam followers 42, 43, 44 that come into contact with the first to third cams 20, 22, 24 are axially mounted on the lower ends of the arms 35, 36, 37, respectively.
A pin 4 is attached to the upper end of each arm 35, 36, 37.
Swing rods 48, 49, 50 are connected via 5, 46, 47. An eccentric portion 39 is formed by an extension spring 51, 52, 53 having one end connected to the casing 3 at an intermediate portion of the swing rod.
It is pressed against 40 and 41.

The fourth arm 38 extends in parallel with the third moving body 23, and a cam follower 54 that abuts against the fourth cam 25 is axially mounted in the middle of the fourth arm 38. A fourth tension spring 55 for bringing the cam follower 54 into contact with the fourth cam 25 of the cam shaft is provided at the tip of the arm 38, and a connecting rod 57 is hung on the tip side via a spherical joint 56. ing.

The first moving body 19 is slidably mounted on the front wall of the casing 3, and the base end of the first moving body 19 is connected to the tip end of the first swing rod 48 pivotally supported by the pin 45. Are connected via. The second moving body 21 is also slidably mounted on the front wall of the casing 3, and its base end is connected to the tip end of the second swing rod 49 pivotally supported by the pin 46 via a connecting member 59. Has been done. The third moving body 23
The casing 3 is slidably mounted from the front wall to the back wall, and a block body 62, which is axially immovably and rotatably sandwiched by two flanges 61, is mounted near the back surface. A sleeve 63 is fixed near the wall. The block body 62 is pivotally attached by a pin 75 to the tip of a third swing rod 50 whose base end is pivotally supported by the pin 47. The tip end of the connecting rod 57 of the fourth arm and the outer peripheral side of the disk 64 fixed to the sleeve 63 of the third moving body are connected by a spherical joint 65. A woven fabric 67 is stretched around a known temple 9 provided in front of the casing, and the woven fabric 67 is expanded to regulate the position of the warp yarns 68.

Next, the position adjusting operation of the tuck-in device will be described. If the ear lobe occurs during weaving, loosen the casing bolts 16 while the loom is running and
5 is turned to the front side in FIG. 1 to bring the rocking rods 48, 49 and 50 into contact with the lower positions of the eccentric portions 39, 40 and 41, and the bolt 16 is tightened to fix the spindle. As a result, the three moving bodies 19, 21, and 23 simultaneously move forward by the same distance, and the cloth fell 11
The optimum distance x between the needle and the needle 28 is secured. On the contrary, when the ear burrs disappear, the bolt 16 is loosened and the handle 15 is rotated to the back side to bring the swing rods 48, 49 and 50 into contact with the high positions of the eccentric portions 39, 40 and 41, and the bolt 16. To fix. As a result, the three moving bodies 19, 21, and 23 are simultaneously retracted by an equal distance, and the optimum distance x between the cloth fell 11 and the needle 28 is secured. Note that the relative movement operation of the first to third moving bodies by the cam mechanism is the same as the conventional one, and therefore the description thereof is omitted. Even if the support shaft 13 is rotated, the positional relationship among the first to third moving bodies does not change, so the tuck-in operation itself does not change.

[0025]

As described above, since the position adjusting device of the present invention can adjust the positions of the tuck-in device in the front-rear direction and the width direction while the loom is operating, the operating rate of the loom is prevented from being lowered. Can be prevented. Further, the adjustment in the width direction can be easily spread by the action of the screw against the tension of the woven cloth.

[Brief description of drawings]

FIG. 1 is a sectional view showing a cam mechanism of first and second moving bodies.

FIG. 2 is a sectional view showing a cam mechanism of a third moving body.

FIG. 3 is a perspective view of the tuck-in device as seen from the front side.

FIG. 4 is a plan view of the tuck-in device with the lid removed.

FIG. 5 is a sectional view showing a conventional cam mechanism of a first moving body.

FIG. 6 is a sectional view showing a conventional cam mechanism of a third moving body.

FIG. 7 is an explanatory diagram of a tuck-in operation.

FIG. 8 is a plan view that schematically shows ear burr.

FIG. 9 is a plan view when the distance between the temple and the gripper is enlarged.

[Explanation of symbols]

 1 front bar 4 underframe 7 positioning block 8 screw rod 9 temple 11 cloth fell 12 cam shaft 13 support shaft 19 first moving body 20 first cam 21 second moving body 22 second cam 23 third moving body 24 Third cam 25 Fourth cam 26 Swing pin 27 Fixed bracket 28 Needle 29 Moving bracket 30 Gripper 32 Fixed blade 33 Weft thread tip 35 to 37 Arm 39 to 41 Eccentric section 42 to 44 Cam follower 48 to 50 Moving rod 68 Warp thread

Claims (2)

[Claims] 1. A plurality of substantially integrated cams (20), (22),
A plurality of moving bodies (19), (21), (23) moving forward and backward at (24) and 2
The gripper (30) moves up and down and back and forth by the relative movement and simultaneous movement of the moving bodies (19) and (21), and the moving movement of one moving body (23) advances and retreats from the inside of the weft shed to the side. And a needle (28) for moving the needle, the weft end (33) gripped by the gripper (30) is hooked on the needle (28) by the vertical movement of the gripper, and the weft end (3) hooked by the backward movement of the needle ( In the tuck-in device for folding back (33) to the woven fabric side, the arm (35) having the cam followers (42), (43) and (44) abutting against the cams (20), (22) and (24) at one end , (3
6), the eccentric part (39) on the support shaft (13) that swingably supports (37),
(40), (41) are provided, and each arm has a swing rod (48), (49), (50).
Is rotatably provided, and the middle part of each rocking rod is urged so as to press the eccentric part, and the tip of the rocking rod and the moving body (1
9), (21), (23) are linked, the position adjusting device in the front-rear direction of the tuck-in device. 2. A temple (9) is attached to a tuck-in device, and the tuck-in device is mounted on an underframe (4) slidably and fixedly attached to the front bar (1), and the front bar (1) is mounted. The positioning block (7) is fixed to the outside of the underframe (4), and the screw rod (8) provided on the positioning block (7) so as to be rotatable and non-sliding is screwed onto the underframe (4). The position adjusting device in the width direction of the tuck-in device.