JPH07278997A - Device for producing synthetic resin lattice woven fabric - Google Patents

Abstract

PURPOSE:To provide a device for producing synthetic resin lattice woven fabric, capable of efficiently producing the check woven fabric by using synthetic resin tapes as warps and wefts and fusing their cross parts, and capable of weaving the warps and the wefts in straight forms free from distortion. CONSTITUTION:The upper fiber 1A and the lower fiber 1B of warps 1 forming a shed 1C are arranged in an equal length, and the upper fiber 1A is pressed with an upper fiber-pressing bar 52 to bend the upper fiber 1A. A rapier band with a griper is inserted into the shed from one side, and the tip of the weft is nipped with the gripper on the opposite side. The tip of the weft is inserted into the shed on the backward movement of the rapier band. The shed is closed, and the weft is cut off. Then, the inserted weft is beaten with a reed 100 whose upper end is formed in a free end and in a height lower than the lower surface of the upper fiber-pressing bar 52. Just after the beating, the cross parts of the warps and the weft at the cloth fell line are fused with high frequency electrodes 107, 110.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weaving device for a grid-like woven fabric in which a highly rigid synthetic resin tape is used for warp and weft.

[0002]

2. Description of the Related Art A synthetic resin grid (referred to as a power grid or geogrid) shown in FIG. 10 in place of a reinforcing bar for a concrete structure such as a road, a retaining wall, a bridge or a building wall material. Came to be used.
That is, a synthetic resin tape is used for the warp yarn 1 and the weft yarn 2, arranged at a pitch of 50 mm to form a plain weave structure, and the intersections are bonded by high frequency heating or the like to produce a wide width of 2 m, 4 m, etc. The woven fabric 3. The warp yarn 1 and the weft yarn 2 of the above synthetic resin tape are made of ethylene / vinyl acetate copolymer resin and have a width of 7 to 15 mm and a thickness of 1.5 to
It is a flat tape of 2.0 mm, and 1a and 2a are core wires made of polyester fiber filaments or polyacetal fiber filaments each having a thickness of several thousand denier, and 2 to 4 thereof are arranged in parallel. It is also known that the weft yarn 2 is simply superposed on the warp yarn 1 of the synthetic resin tape and the intersections thereof are bonded.

However, since the conventional lattice-shaped fabric is manufactured manually by a worker, the productivity is low, and further, the warp and the weft are crossed, or the weft is put on the warp, and then the intersection is formed. There is a problem in that the warp and weft are curved before moving to the bonding device and the warp and weft are curved, and the arrangement pitches are unequal.Therefore, when they are used to reinforce concrete structures, the tensile strength varies in the vertical and horizontal directions. there were.

[0004]

SUMMARY OF THE INVENTION The present invention provides a synthetic resin grid-like woven fabric 3 having the woven fabric structure shown in FIG. 10 and having less warp and weft curvature and less pitch unevenness mechanically and efficiently. The present invention provides a weaving device for manufacturing, and a weaving device capable of adhering the intersection of the warp yarn and the weft yarn immediately after beating.

[0005]

The weaving device of the present invention comprises:
A weaving device for weaving a lattice-shaped woven fabric using synthetic resin tapes as warp yarns and weft yarns, wherein the warp yarn shedding device makes the upper thread and the lower thread of the shed formation substantially equal, The weft inserting device is equipped with a needle thread presser bar that is formed to close the shed at the time of striking, and that presses the upper thread at the time of forming the shed downward on the reed side of the cloth fell to bend it. A rapier band with a gripper fixed at the tip is inserted from one side of the shed into the shed along the gripper guide in the shed, and the above-mentioned gripper is attached to the gripper by a weft feeder provided on the opposite side of the shed. The weft ends are clamped, the weft is inserted by retreating the rapier band, and the wefts are cut on the side opposite the shed.The upper reeds of the repulsion reed have free ends, and the upper ends of the reeds The height of the thread passes under the above upper thread pressing bar when beating. Characterized in that it is low formed to cut.

The above-mentioned weaving device includes an adhering device, such as a high-frequency type or ultrasonic type welding device, which is capable of sandwiching and adhering the intersecting portion of the warp and the weft that has reached the weaving front line by beating, from above and below. Can be provided.

In the heald used in the above-mentioned opening device, a pair of upper and lower guide rollers are rotatably mounted between a pair of left and right flat plates that are long in the vertical direction so that the axes of the guide rollers are oriented in the width direction. It is preferable to form a gap into which a synthetic resin tape for use can be inserted. By using this heald, the resistance when the warp passes through is greatly reduced.
In addition, the movement mode of the warp in the shedding device is such that when the reed is beaten, the shed is closed and the upper thread and the lower thread are aligned substantially in parallel, and the height of the warp when closed is lower than that of the upper thread when the shed is formed. Any of the upper shed and the middle shed may be used, but the upper shed is preferable from the viewpoint of easy handling.

The gripper in the above weft inserting device is preferably provided with a spring for urging the weft holding portion of the gripper in a direction to always close in order to reliably hold the heavy weft, and is fixed to the tip of the rapier band. The rod-shaped substrate and a lever having an intermediate portion swingably supported with respect to a fulcrum on the rod-shaped substrate can be formed, and the weft holding portion can be formed by the rod-shaped substrate and the tip of the lever.

The weft supplying device includes a draw-out roller for drawing out the weft from the weft bobbin, a nozzle guide for slidably holding the tip of the weft drawn out by the draw-out roller, and a warp side from the nozzle-like guide. It is preferable that the weaving cutter for cutting the extending weft and the opening means for opening the weft holding portion of the gripper on the warp side of the weft cutter against the bias of the spring are provided. By rotating the draw-out roller in conjunction with the occasion, the heavy weft is prevented from coming off from the gripper, and the weft insertion becomes easier. The releasing means may be a pressing device for pressing the lever of the gripper downward on the side opposite to the weft holding portion. An air cylinder or an electromagnet is preferable in terms of reliability when opening the portion.

In addition, between the drawing roller and the nozzle-shaped guide, the weft ends that are cut by the weft cutter and project from the nozzle-shaped guide are temporarily retracted into the nozzle-shaped guide until the next weft insertion. A weft pull-back device can be provided. In this case, it is possible to prevent the end of the weft protruding from the nozzle-shaped guide from hanging after cutting the weft, and it becomes easy to hold the weft tip by the gripper during the next weft insertion. .

[0011]

[Operation] When the warp forms a shed, a rapier band is inserted into this shed from one side, it runs along the gripper guide in the shed, and the end of the weft is clamped on the opposite side of the shed and then the rapier band is pulled back. As a result, the weft is inserted and the weft is cut on the opposite side. Then, when the shed is closed, the reed moves forward and the weft yarn sandwiched between the upper yarn and the lower yarn is carried to the cloth fell line. Hereinafter, the above-mentioned warp opening movement, weft insertion movement, and reeding movement are repeated in order, and a known warp delivery movement, a warp tension adjustment by rocking the backrest,
The weaving is advanced by adding a winding motion and the like in front of the cloth fell line to obtain the synthetic resin lattice-like woven fabric 3 shown in FIG. And when the adhesive device is provided at the position of the cloth fell line,
Since the intersection of the warp and the weft that has reached the weaving front line by beating is immediately bonded, no misalignment occurs in the subsequent winding.

In the present invention, since the lengths of the upper thread and the lower thread when forming the shed are substantially equal, the warp tensions are made uniform. In addition, the upper thread is pressed by the upper thread pressing bar, and this upper thread does not push up the weft thread of the weaving line previously inserted, so abnormal tension is applied to the weft thread or the edge of the weft thread that intersects with the warp thread. It does not turn over.
Since the upper ends of the reeds are formed at the free ends, the warps can freely move up and down between the free ends of the reeds to form the shed. Further, since the rapier band travels along the gripper guide inside the shed, the long rapier band can be safely reciprocated in the shed without falling and touching the lower thread. Moreover, since the weft thread is put in when the rapier band is pulled back, the weft thread is certainly weft-inserted without buckling even though the weft thread is heavy.

Also, since the upper end of the reed wing of the reed for beating is formed to have a low height so that it can pass under the upper thread pressing bar, the reed is hit without contacting the upper thread pressing bar with the reed. can do. Further, since the beating is performed in a state where the shed is closed and the upper thread and the lower thread are aligned substantially parallel to each other, an appropriate sliding resistance acts on the weft, and the weft is held in a straight straight line. Therefore, the weft yarn can be laid down in a straight straight line in the width direction on the cloth fell line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 10 is a warp bobbin around which a warp 1 made of the above-mentioned synthetic resin tape is wound. A large number of warp bobbins 10, for example 41, are creels at the rear of the loom (not shown). 41 arranged in a multi-row and multi-stage on the
The warp yarns (width 9 mm) 1 of the book are arranged in parallel at a pitch of 50 mm and fed to the nip portion of the front feed roller 11 and the pressing roller 12 in contact with the lower surface thereof. The pressing roller 12 includes a swing lever 13 having a support shaft 13a as a fulcrum.
Is supported by one end of the feed roller 11 and is urged by a spring 14 at the other end to be pressed against the lower surface of the feed roller 11. On the other hand, the feed roller 11 is connected to a delivery lever 17 on a delivery shaft 16 below via a delivery winding transmission means 15 and a one-side clutch (not shown). The rocking causes intermittent rotation in the direction of arrow A.

A whip roller 18 for adjusting the warp tension is provided in front of the feed roller 11. The whip roller 18 is a swing lever 1 fixed to a support shaft 19a.
A spring 20 attached to one end of 9 and attached to the other end
Is urged in the clockwise direction (arrow B direction). The whip roller 18 swings by driving a V-shaped lever 22 at the front lower side of the whip roller 18 via a downward arm 21 fixed to a support shaft 19a. The mounting height of the whip roller 18 is such that when the warp 1 forms a shed, the upper thread 1A and the lower thread 1B are moved from the whip roller 18 to the front line (upper thread 1A).
And the length of the lower thread 1B reaching the front) are set to be substantially equal.

The V-shaped lever 22 is the first lever 22.
a has a support shaft 23 at the intersection of a and the second lever 22b,
The roller 24 provided on the first lever 22a is fixed to the rear drive shaft 25, and counterclockwise (direction of arrow C) for each weft insertion.
By making contact with the rear cam 26 that makes one full rotation, one back and forth movement is made for each weft insertion. Then, the first lever 22
The tip of a is connected to the tip of the delivery lever 17 below the feed roller 11 via the first connecting rod 27,
The tip of the second lever 22b is connected to the arm 21 below the whip roller 18 via the second connecting rod 28.

Therefore, the roller 24 comes into contact with the convex portion of the rear cam 26 every time weft insertion is performed, and the feed roller 11
Rotates to advance the warp yarn 1. When the warp yarn 1 is slack, the whip roller 18 faces upward (direction of arrow B).
To stop at a position balanced with the tension of the warp yarn 1. Further, when the tension of the warp yarn 1 is high and the roller 24 is in contact with the small diameter portion of the rear cam 26, the feed amount of the feed roller 11 becomes large, and the whip roller 18 which has been descending up to that point rises, 1 tension and rocker lever 1
It stops at the position where the elasticity of the spring 20 at the other end of 9 is balanced. The second lever 22b of the V-shaped lever 22 and the second connecting rod 28 are connected to each other via compression coil springs 29a and 29b for shock absorption.

The above-mentioned rear drive shaft 25 is connected to the front intermediate shaft 31 by the sending-out winding transmission means 30, and this intermediate shaft 31 is connected to the main shaft 33 by the intermediate connecting winding transmission means 32. The main shaft 33 is connected to the drive motor 35 by the main shaft winding transmission means 34 in the front-down direction, and is connected to the opening cam shaft 37 by the front opening winding transmission means 36, and the opening shaft cam is connected to the cam shaft 37. 38 is fixed. And
Rear drive shaft 25, intermediate shaft 31, and opening cam shaft 37
Are the same as the main shaft 33 in the counterclockwise direction (direction of arrow C)
Rotate to. However, the rear drive shaft 25 and the intermediate shaft 31
Rotates at the same speed as the main shaft 33, and the opening cam shaft 37
Rotates at half the speed of the main shaft 33.

Above the main shaft 33 (see FIG. 9), front and rear 2
A single heald frame 40 is provided so as to be vertically movable, and a link lever mechanism 39 is connected to the lower end of the heald frame 40. The lower end of the link lever mechanism 39 is attached to the lower surface of the opening cam 38 via a roller 39a. Contact. As the opening cam 38 rotates, the front and rear two heald frames 40, 40
Alternately rises from the position of the lower thread 1B (see FIG. 1) for each weft insertion to form the upper mouth shed 1C. The opening cam 3
8 and the link lever mechanism 39 include a front heald frame 40.
Only those for the rear heald frame 40 are omitted.

The heald frame 40 (see FIG. 2) is formed into a horizontally long rectangle by the upper and lower horizontal frames 40a and the left and right vertical frames 40b, and the upper end of the link lever mechanism 39 is formed on the lower horizontal frame 40a. Be connected. Then, the guide plates 41 and 42 are laterally projected and fixed above and below the left and right vertical frames 40b,
The side edges of the upper and lower guide plates 41, 42 fit into the grooves of the upper and lower grooved guide rollers 43, 43 attached to the side frame (not shown) of the loom, and the opening cam 3
It moves up and down together with the heald frame 40 with the rotation of 8. Also,
A large number of healds 44 are fixed between the upper and lower horizontal frames 40a, 40a at a pitch of 100 mm, which is twice the pitch of the warp yarns 1 in the product lattice-shaped fabric 3.

This heald 44, as shown in FIG.
A pair of upper and lower guide rollers 46 and 47 are rotatably mounted between a pair of left and right flat plates 45 and 45 which are long in the vertical direction so that the shafts are oriented in the width direction. A gap is formed in which 1 can be inserted. In this embodiment, the upper guide roller 46 has the left and right flanges 46a, and the lower guide roller 47 is formed to have a width that fits between the left and right flanges 46a, 46a.

A fixed beam 50 (see FIGS. 1 and 5) in the width direction is provided above the middle of the heald frame 40 and the cloth fell line (the portion where the upper thread 1A and the lower thread 1B intersect), and the fixed beam 50 is provided. An upper thread pressing bar 52, which is long in the width direction, is fixed to the front edge of the lower surface of the via a connecting fitting 51. The upper thread pressing bar 52 presses and bends the upper thread 1A at the time of forming the shed downwards slightly behind the reed line (on the reed side).

FIG. 4 is an overall front view of the rapier type weft inserting device. A rocking wheel 56 for driving a rapier band is provided on the right side of the shed 1C, and the right half portion of the peripheral surface of the rocking wheel 56 is provided. An arc-shaped band guide 57 is provided so as to surround it, a band storage cylinder 58 that curves upward in a mountain shape is provided, and a lower surface guide 59 in the width direction is provided on the opposite lower side. A rapier band 60 is inserted from above the rocking wheel 56 between the rocking wheel 56 and the band guide 57 to make a half turn around the rocking wheel 56.
The lower surface extends along the upper surface of the lower surface guide 59 toward the shed 1C on the left side.

The gripper 61 at the tip of the rapier band 60
As shown in FIG. 7, the rod-shaped substrate 62 is fixed to the tip of the rapier band 60, and the lever 63 has an intermediate portion swingably supported by a support shaft 62a on the rod-shaped substrate 62. The tip of the lever 63 (the left end in FIG. 7) forms a weft holding portion 63a, and a compression coil spring 64 is attached to the rear end of the lever 63, and the compression coil spring 64 urges the weft holding portion 63a in the closing direction. As shown in FIG. 4, the gripper opening air cylinder 65 is provided above the lower surface guide 59, and when the piston rod thereof projects downward, the lever of the gripper 61 whose tip reaches the lower surface guide 59. The rear end of 63 is pushed down to open the weft holding portion 63a.

In FIG. 4, a weft bobbin 66 wound with the weft 2 made of the synthetic resin tape is rotatably supported on the left side of the shed 1C, and the drawing roller 6 is disposed on the right side thereof.
7 is provided, and the pressing roller 68 is pressed against its upper surface. As shown in FIG. 7, the pressing roller 68 is attached to a pressing lever 69 having a right support shaft 69a as a fulcrum, and a tip of the pressing lever 69 is an upper spring 70.
Is urged downward. And this pressing roller 68
The weft yarn 2 is held in the nip portion of the draw-out roller 67 and is drawn out by the clockwise rotation of the draw-out roller 67.

A support shaft 71a on the right side of the pressing roller 68.
A moon roller 71 is rotatably attached to the. This moon-shaped roller 71 is one in which a flat recess 71b is formed around a disk and has an operating lever 72 fixed integrally therewith, and a weft air connecting to the tip of the operating lever 72. When the piston 73 of the air cylinder 73 is retracted as shown by the operation of the cylinder 73 and the piston rod of the air cylinder 73 is retracted as shown in the drawing, the concave portion 71b is directed to the left and the piston rod is projected (see FIG. 8). , The above-mentioned recess 71b
Is facing downwards. A pressing roller 74 is provided below the moon-shaped roller 71, and a pressing lever 75 having the pressing roller 74 is attached to the spring 7.
By being urged by 6, the lower surface of the moon-shaped roller 71 is pressed. However, when the concave portion 71b of the moon-shaped roller 71 faces right below, the stopper 77 comes into contact with the swing lever 75 to restrict the upward movement of the pressing roller 74, and the concave portion 71b
A gap through which the weft 2 can pass is formed between b and the pressing roller 74.

The above-mentioned moon-shaped roller 71 and operating lever 72
A series of devices including a press roller 74 and the like constitutes a weft retracting device, and when the piston rod is retracted in the state of FIG. 8 and the moon roller 71 rotates clockwise through the operating lever 72. , Moon shaped roller 7
1 and the pressing roller 74 nip the weft 2 therebetween, and pull back the weft 2 on the right side of the nip portion to the left by a predetermined length.

In FIG. 7, a nozzle-shaped guide 78 for guiding the weft yarn 2 to the right of the nip portion between the moon-shaped roller 71 and the pressing roller 74, and the weft yarn 2 protruding rightward from the nozzle-shaped guide 78. A weft cutter including an upper blade 79 and a lower blade 80 for cutting is provided. The upper blade 79 is a piston rod of an upper upper blade air cylinder 81, and the lower blade 80 is a lower lower blade air cylinder 82. It is fixed to each piston rod. An air cylinder 83 for gripper opening is provided on the right side of the weft cutters 79, 80.
Is provided. This air cylinder 83 for gripper opening
Is the same as the gripper opening air cylinder 65 on the right side of the shed 1C, and when the piston rod projects,
The weft holding portion 63a of the gripper 61 located below is opened.

As shown in FIG. 4, a weft motor 85 is installed below the central portion of the shed 1C, and its motor shaft is a weft winding transmission means 86, an upper right rapier drive shaft 87, and a pair of bevel gears. It is connected to the rocking wheel 56 via 88 and a rapier winding transmission means 89. And
The rapier drive shaft 87 is connected to the left-side pull-out drive shaft 91 through the one clutch 90 on the left end, and the pull-out drive shaft 91 is connected through a set of bevel gears 92 and pull-out winding transmission means 93. It is connected to the roller 67. Therefore, when the weft thread motor 85 is driven and the rapier drive shaft 87 rotates in the direction of arrow D, the swing wheel 56 rotates clockwise, and the rapier band 60 is pulled out from the band housing cylinder 58 and placed in the shed 1C. On the contrary, the rapier drive shaft 87 is driven by the arrow E by the drive of the weft motor 85.
When rotating in the direction, the rocking wheel 56 rotates counterclockwise to return the rapier band 60 to the band storage cylinder 58, and the rotation of the rapier drive shaft 87 in the direction of arrow E rotates through the one-way clutch 90 to pull out the drive shaft 91. The weft yarn 2 is pulled out from the weft bobbin 66 by rotating the pull-out roller 67 in the clockwise direction. The weft motor 85 may be omitted, and the swing wheel 56, the rapier drive shaft 87, etc. may be rotated by transmission from the main shaft 33.

A gripper guide 95 is provided on the shed 1C as shown in FIGS. That is,
A connection fitting 96 is provided on the back surface of the fixed beam 50 (see FIG. 5).
A support bar 97, which is long in the width direction, is fixed to the front and rear sides of the support bar 97, and a plurality of strip-shaped guide fittings 98 formed in a strip shape at a pitch equal to that of the warp 1 are fixed in a hanging shape. Part is inserted into the shed 1C through the space between the upper threads 1A, and the edges of the rapier band 60 are slidably fitted in the widthwise guide grooves 98a provided at the lower ends of the facing surfaces of the front and rear guide fittings 98. The rapier band 60 is guided horizontally.

As shown in FIGS. 5 and 6, the reed 100 for beating the reed is composed of a large number of reed blades 1 whose upper ends are formed as free ends.
00a at a pitch equal to the mounting pitch of the guide metal fitting 98, the height of the reed wing 100a is formed lower than the lower end of the needle thread pressing bar 52, and a rib 100b in the width direction is projected on the front surface thereof. Has been done. And the above reed 1
00 is a carriage 10 fixed to the lower surface as shown in FIG.
1 is mounted on a horizontal guide rail 102 in the front-rear direction, is connected to the rear surface of the reed 100 and extends rearward, is connected to the rear end of the link 103, and has a lower support shaft 104a as a fulcrum. Through the beating lever 104 and the beating cam 105 in contact with the roller at the lower end of the beating lever 104, the main shaft 33 fixed to the beating cam 105 reciprocates back and forth, and on the bobbin thread 1B on its advance. Weft 2
To the right Orizen Line.

Reed 100 at the cloth fell line position shown by the chain line in FIG.
An electrode support plate 106, which is long in the width direction, is installed below the front surface of the, and a plurality of lower electrodes 107 are provided on the upper surface of the electrode support plate 106 so as to project at the arrangement pitch of the warps 1. On the other hand, a plurality of electrode air cylinders 108 arranged in the width direction are provided above the piston rod 10.
8a are arranged side by side with the electrode support plate 1 at the lower end.
The upper electrodes 110, which are long in the width direction, are fixed to face the columns of the lower electrodes 107 via 09. This upper electrode 11
0 descends after the weft yarn 2 is beaten, and the lower electrode 10
High frequency fusion is performed by sandwiching the intersection of the warp yarn 1 and the weft yarn 2 with the yarn No. 7.

In FIG. 1, the high frequency electrodes 107, 1
An ear cutter 111 for cutting and aligning the weft yarns 2 protruding from the edge ends of the lattice-shaped fabric 3 having a plain weave structure composed of the warp yarns 1 and the weft yarns 2 is provided in front of 10. The ear cutter 111 includes a receiving plate 112 fixed to the outer lower side of the warp yarn 1 at both ends in the width direction, a disc cutter 113 rotating in contact with the upper surface thereof, a cutter winding transmission means 114 for driving the same, and a cutter motor. It is composed of 115.

A take-up roller 116 for taking up the lattice-shaped fabric 3 is provided in front of the ear cutter 111, and a nip roller 117 is pressed against the lower surface thereof. Then, the take-off roller 116 is used for the beating lever 10
It is driven by the oscillating motion of No. 4 and intermittently rotates in the clockwise direction (direction of arrow F) by each weft pitch. That is, the support shaft 104a fixed to the beating lever 104 is provided with the downward swinging winding transmission means 118, the swinging arm 119, the lower connecting rod 120, the ratchet mechanism 121 and the take-up winding transmission means 122. It is connected to the take-off roller 116. The surface of the take-up roller 116 is provided with a large number of projections that fit into the texture of the lattice-shaped fabric 3 (a rectangular space surrounded by the warp yarns 1 and the weft yarns 2). The slip can be prevented and the take-back can be made more reliable.

In the above structure, both rollers 39a (see FIG. 9) corresponding to the two front and rear heald frames 40 are in contact with the lower surface of the small diameter portion of the opening cam 38, and the entire warp 1 is the lower thread 1B.
When the drive motor 35 (see FIG. 1) is driven and the main shaft 33 rotates in the direction of arrow C,
The rear drive shaft 25 and the opening cam shaft 37 each rotate in the direction of arrow C. Then, when the roller 39a corresponding to the front heald frame 40 comes into contact with the large diameter portion of the opening cam 38 by the rotation of the opening cam shaft 37, the front heald frame 40 moves the height of the upper thread 1A as shown in the drawing. And the shed 1C is formed, and at the same time, the large diameter portion of the rear cam 26 on the rear drive shaft 25 pushes the V-shaped lever 22 rearward to rotate the feed roller 11 to advance the warp 1 by a predetermined length. At the same time, the whip roller 18 is pushed up to remove the looseness of the warp yarn 1.

Then, the rapier drive shaft 87 is rotated in the direction of arrow D by driving the weft motor 85 (see FIG. 4), which causes the rocking wheel 56 to rotate in the clockwise direction to send out the rapier band 60 and its tip. Gripper 61 and rapier band 60 of the gripper guide 9 in the shed 1C
Guided by No. 5, heading for the weft feeder on the opposite side. In this weft supply device, as shown by the solid line in FIG. 7, the weft 2 passed through the nozzle guide 78 is on standby with the tip retracted. When the gripper 61 arrives under the air cylinder 83 for opening the gripper on the right side of the nozzle-shaped guide 78, the weft motor 85 once stops and the piston rod of the air cylinder 83 descends to move the gripper. The weft holding portion 63a of 61 is opened, and at the same time, the piston rod of the weft air cylinder 73 projects (see FIG. 8), and the concave portion 71b of the moon-shaped roller 71 faces downward, so that the space between the pull-out roller 67 and the moon-shaped roller 71 is reduced. The weft yarn 2 which had been curved by means of the elastic force returns straight to the end, and the tip end thereof has the nozzle guide 78.
Of the air cylinder 83.
The piston rod is retracted, and the weft holding portion 63a is closed to be held by the gripper 61.

Then, when the rapier drive shaft 87 rotates in the direction of arrow E due to the reverse rotation of the weft motor 85 (see FIG. 4), the rocking wheel 56 starts rotating counterclockwise and the gripper 61 and the rapier band 60 move. Above shed 1C
Guided by the inner gripper guide 95, the retreat is started.
At the same time, the rapier drive shaft 87 is connected to the pull-out drive shaft 91 by the one-way clutch 90, the pull-out roller 67 rotates clockwise to pull out the weft yarn 2, and the weft yarn 2 is passed through the shed 1C and weft-inserted. And when weft insertion is completed,
As shown in FIG. 9, the rollers 3 corresponding to the front heald frame 40.
9a contacts the small diameter portion of the opening cam 38, the front heald frame 40 descends, the upper thread 1A (see FIG. 1) descends to the height of the lower thread 1B, and the shed 1C is closed.

The shed 1C is closed, and the upper thread 1A and the lower thread 1B are
When the weft 2 is sandwiched between them, on the supply side of the rapier band 60 (see FIG. 4), the piston rod of the gripper air cylinder 65 projects and the weft holding portion 63a of the gripper 60 is opened, so that the tip of the weft 2 is gripped by the gripper 60. Is released from.
On the other hand, on the opposite side (see FIG. 7), the upper blade air cylinder 8
1 and the piston rods of the lower blade air cylinder 82 project, and the upper blade 79 and the lower blade 80 cut the weft yarn 2 extending to the right from the nozzle guide 78. The chain line in FIG. 7 shows the weft yarn 2 immediately after this cutting. When the above cutting is completed, the moon roller 71 rotates clockwise by a predetermined angle by the operation of the weft air cylinder 73, and at that time, the lower pressing roller 7 is pressed.
4 and nipping the weft yarn 2 to the left, and retracting the tip of the weft yarn 2 from the nozzle-shaped guide 78 to prevent the tip of the weft yarn 2 from hanging down.

When both ends of the weft yarn 2 that has been wefted are released (see FIG. 1), the large-diameter portion of the beating cam 105 on the main shaft 33 swings the beating lever 104 in the clockwise direction.
The reed 100 passes from the rear of the upper thread pressing bar 52, passes under the upper thread pressing bar 52, and sends the weft 2 sandwiched between the upper thread 1A and the lower thread 1B with the shed closed to the front of the upper thread pressing bar 52. Then, when the front end of the forward stroke, that is, the cloth line is reached, the electrode air cylinder 108 located above the cloth line operates, and the upper electrode 110 at the standby position descends to move the warp 1 and the weft 2 at the intersection. The upper and lower high frequency electrodes 110 and 107 are sandwiched and fused. Then, the reed 100 is retracted.

When the reed 100 moves forward, the lower swing arm 119 swings clockwise due to the transmission of the repulsion lever 104 from the support shaft 104a, so that the ratchet mechanism 121 is rotated. , Take-off roller 116
Rotates to pick up the lattice-shaped fabric 3 by the pitch of the weft yarns 2. Then, the fused portion of the weaving line is cooled until it reaches the take-up roller 116, and both ends of the above-mentioned fused weft 2 are cut by the ear cutters 111 in the middle thereof.

[0041]

As described above, according to the first aspect of the invention, it is possible to weave a lattice-shaped woven fabric composed of warp yarns and weft yarns of a synthetic resin tape. Moreover, since the lengths of the upper thread and the lower thread at the time of forming the shed are almost equal, the warp tension is made uniform, and the upper thread is pressed by the upper thread pressing bar. Since the rapier band runs along the gripper guide inside the shed, the long rapier band does not fall and come into contact with the bobbin thread, and the weft thread is inserted when pulling back the rapier band. Therefore, even if the weft thread is heavy, the weft thread is reliably inserted, and the upper end of the reed wing is formed with a low height so that it can pass under the upper thread presser bar. It is possible to beat reeds without contacting them, and since the reeds are closed and the upper thread and the lower thread are almost parallel, the appropriate repulsion resistance acts on the weft thread, Straight straight line Held, therefore, it is possible to lay the weft in the width direction of a straight linearly weave front.

Further, in the invention described in claim 2, since the intersection of the warp and the weft is bonded immediately after the beating, it is possible to completely prevent the misalignment during the subsequent winding movement. Further, according to the invention described in claim 3, the resistance when the warp passes through the heald can be significantly reduced, and the warp distortion can be reduced. The invention described in claim 4 is
The upper thread and the lower thread can be easily set to have the same length, which facilitates handling. Further, in the invention described in claim 5, since the drawing roller can be rotated in association with the retreat of the rapier band, the heavy weft can be prevented from coming off from the gripper, and the weft insertion can be further facilitated.
Further, the invention described in claim 6 prevents the end portion of the weft thread protruding from the nozzle-shaped guide after the weft thread is cut off,
In the next weft insertion, the gripping of the weft end by the gripper can be made more reliable.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment.

FIG. 2 is a front view of a heald frame.

FIG. 3 is an enlarged view of a main part of a belld.

FIG. 4 is a front view of a weft inserting device.

FIG. 5 is a side view of a gripper guide.

FIG. 6 is a front view of a gripper guide.

FIG. 7 is a front view of the weft supply device when the weft is pulled in.

FIG. 8 is a front view of the weft supply device when the weft is clamped.

FIG. 9 is a side view of the beating device.

FIG. 10 is a perspective view of a lattice-shaped fabric.

[Explanation of symbols]

1: warp, 1A: upper thread, 1B: lower thread, 1C: shed, 2:
Weft, 3: Lattice fabric, 10: Warp bobbin, 11: Feed roller, 18: Whip roller, 22: V-shaped lever, 40: Held frame, 38: Cam for opening, 52: Upper thread pressing bar, 56: Shake Moving wheel, 58: Band storage cylinder,
60: rapier band, 61: gripper, 63a: weft holding portion, 65, 83: gripper opening air cylinder, 6
6: Weft bobbin, 67: Draw roller, 71: Moon roller, 71b: Recess, 74: Press roller, 78: Nozzle guide, 79, 80: Weft cutter, 95: Gripper guide, 100: Reed, 100a: Reed Wings, 107, 11
0: high frequency electrode (adhesive device), 111: ear cutter, 1
16: Take-up roller.

Claims (6)

[Claims] 1. A weaving device for weaving a lattice-shaped woven fabric using synthetic resin tapes as warp yarns and weft yarns, wherein the warp yarn shedding device adjusts the lengths of the upper yarn and the lower yarn when forming the shed. Almost equal, formed to close the shed at the time of beating, and equipped with a needle thread pressing bar for bending the upper thread at the time of forming the shed downward by the reed side of the cloth fell line,
The weft inserting device inserts a rapier band, which has a gripper for gripping the wefts fixed to the tip, from one side of the shed into the shed along the gripper guide in the shed, and the weft supply provided on the opposite side of the shed. The gripper holds the tip of the weft thread with the device, inserts the weft thread by retreating the rapier band, and cuts this weft thread on the opposite side of the shed.The upper end of the reed blade of the repulsion reed has a free end. In addition, the height of the upper end of the reed wing is formed to be low so that it can pass under the upper thread pressing bar when the reed is beaten. 2. The weaving device for a synthetic resin lattice-like woven fabric according to claim 1, further comprising an adhesive device for adhering a crossing portion of the warp and the weft that has reached the front line by beating. 3. A heddle of an opening device comprises a pair of upper and lower guide rollers rotatably mounted between a pair of left and right flat plates which are long in the up and down direction, with their axes oriented in the width direction, and between the upper and lower guide rollers. The weaving device for a synthetic resin lattice-shaped woven fabric according to claim 1 or 2, wherein a gap into which a synthetic resin tape for warp can be inserted is formed. 4. The upper shed shed is formed so that the shed device locates the lower thread substantially horizontally between the heald and the weft line when the shed is formed. A weaving device for the described synthetic resin lattice-shaped fabric. 5. The gripper is provided with a spring for urging the weft holding portion of the gripper in the direction to always close the puller, and the weft supply device pulls out the weft from the weft bobbin and the pulling roller. Nozzle guide for slidably holding the front end of the weft, a weft cutter for cutting the weft extending from the nozzle to the warp side, and a weft holding portion of the gripper on the warp side of the weft cutter. 5. A weaving device for a synthetic resin lattice-like woven fabric according to any one of claims 1 to 4, further comprising an opening means for opening the spring against the bias of the spring. 6. A weft pullback for temporarily retracting a weft end, which is cut by a weft cutter and projects from the nozzle guide, between the drawing roller and the nozzle guide until the next weft insertion until the next weft insertion. The apparatus for weaving a synthetic resin lattice-shaped fabric according to claim 5, wherein the apparatus is provided.