JP2000234241A - Rapier head in rapier loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the friction between a lower guiding piece constituting a rapier head and a rapier guide on which the lower guiding piece slides, and at the same time to stabilize the running of the rapier head, in a woven fabric having a quick cross timing of a warp opening. SOLUTION: In a production of a woven fabric having a quick cross timing of a warp opening, a height controlling member 5 is attached on a rapier head body 3, and it is allowed to protrude either in the upper direction or the lower direction from the rapier head body 3, and thereby the distance between the upper most surface and the lower most surface of the rapier head 2 is made adjustable. By this, when the rapier head 2 retreats to the vicinity of the weaving end and touches a warp, the pressing powers put on the rapier head 2 of the upper warp and the lower warp are balanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapier head of a rapier loom.

[0002]

2. Description of the Related Art In a rapier loom, a rapier runs in an opening of a warp to perform weft insertion. At that time, the rapier head, which is the tip of the rapier, comes into contact with the warp. In particular, when retracting to the vicinity of the end of the fabric and exiting from the opening of the warp, the opening amount is reduced by the closing operation of the warp, and the rapier head comes into contact with the warp. For this reason, the rapier head is formed as small as possible in consideration of weight reduction and weak contact with the warp and not damaging the warp. The running position of the rapier and the opening position of the warp are also set so that the rapier head comes into contact with the warp as weakly as possible, so that the warp is not damaged.

[0003]

However, according to the prior art, the closing timing of the warp causes the cross timing at which the upper warp and the lower warp intersect to be set earlier depending on the fabric, so that the rapier head and the warp come into strong contact. There is. That is, in a normal woven fabric, when the rapier head retreats to the vicinity of the end of the woven fabric and exits from the inside of the opening of the warp, the opening amount decreases due to the closing operation of the warp, and the upper warp whose uppermost surface of the rapier head descends, The lower surface makes weak contact with the ascending lower warp. However, in a fabric in which the cross timing is set earlier, the uppermost surface and the lowermost surface of the rapier head come into contact with the upper and lower warps, respectively, before the rapier head retreats to the vicinity of the end of the fabric. Until they come out of the opening, they come into strong contact. Therefore,
The rapier head receives a strong downward pressing force from the upper warp and an upward pressing force from the lower warp. Here, in a rapier loom in which the rapier transport system is a flexible band system, the following effects are exerted by the pressing force from the warp. The rapier head has a lower guide piece, and a rapier band attached adjacent to the lower guide piece forms a rapier. At the time of weft insertion, both the lower guide piece and the rapier band slide in the guide groove of the rapier guide member of the machine. Here, when the downward and upward pressing forces from the warp applied to the rapier head are not balanced, the lower guide piece and the rapier band are moved in a state where the difference between the two pressing forces is applied as a frictional force. It will slide in the guide groove of the member. Therefore, wear of the lower guide piece, the rapier band, and the guide groove of the rapier guide member is promoted. Further, when the difference between the two pressing forces applied to the rapier head is large, the running of the rapier head becomes unstable, and the weft insertion operation becomes unstable.

[0004] The case where the downward and upward pressing forces from the warp applied to the rapier head are not balanced, and the case where the running position of the rapier head is set to be shifted to either the upper or lower warp of the warp opening. There is. That is, the distance between the uppermost surface of the rapier head and the upper warp is different from the distance between the lowermost surface of the rapier head and the lower warp. When the rapier head retreats near the weaving end, the opening of the warp becomes smaller and the warp contacts the rapier head. Here, when the running position of the rapier head is shifted, the uppermost surface of the rapier head and the upper warp are in contact with the lower surface of the rapier head and the lower warp at the same time. The warp yarns quickly contact one surface of the rapier head, causing a difference in the vertical pressing force applied thereafter, resulting in imbalance. Furthermore, in a woven fabric in which the cross timing is set earlier, the rapier head receives a strong pressing force from the warp, but in this case, a large difference is generated between the upper and lower pressing forces.

[0005] Here, as an example of a case where the running position of the rapier head is shifted to either the upper warp or the lower warp of the warp shed, a carrier rapier of a rapier loom having a pair of rapiers composed of an insert rapier and a carrier rapier is used. There is a rapier head.

FIG. 12 shows a weft insertion operation of a pair of rapiers composed of an insert rapier and a carrier rapier. The rapier head 1 of the insert rapier 21 gripping the weft Y from the yarn supplying side, the rapier head 2 of the carrier rapier 22 from the opposite yarn supplying side advance inside the warp shedding to the center of the loom, and the rapier head 1 of the insert rapier 21 The weft Y is delivered to the rapier head 2 of the carrier rapier 22. Thereafter, both rapier heads 1 and 2 move back to their original positions. At this time, the carrier rapier 22 conveys the leading end of the weft Y to the side opposite to the yarn feeding side, thereby completing the weft insertion. For the transfer of the weft Y, the tip of the rapier head 2 of the carrier rapier 22 is moved to the rapier head 1 of the insert rapier 21.
It is done by getting inside. Therefore, the rapier head 1 of the insert rapier 21 is formed larger than the rapier head 2 of the carrier rapier 22. Therefore, the distance between the uppermost surface and the lowermost surface of the rapier head 1 is
Is larger than the distance between the uppermost surface and the lowermost surface. Usually, the positional relationship between the rapier heads 1 and 2 is set to either the lower surface reference or the upper surface reference. The lower surface reference travels in a state where the lowermost positions of both the rapier heads 1 and 2 match. In addition, the upper surface reference is for both rapier heads 1,
2 travels in a state where the uppermost positions of the two coincide.

Generally, in order to prevent the rapier head from strongly contacting the warp while traveling in the warp shed, the rapier head 1 of the insert rapier 21 which is larger than the carrier rapier 22 is positioned so as to be at the center of the warp shed. The travel position has been set. That is, the warp opening and the rapier head running position are set so that the distance between the upper surface of the rapier head 1 of the insert rapier 21 and the upper warp is equal to the distance between the lower surface of the rapier head 1 and the lower warp. Therefore, the running position of the rapier head 2 of the carrier rapier 22 is shifted to either the upper warp or the lower warp. For example, in the case of the lower surface reference, the running position is shifted toward the lower warp.

FIGS. 10 and 11 show two rapier heads 1 and 2 respectively.
In a rapier loom in which the positional relationship of is set on the basis of the lower surface, in a fabric in which the cross timing of the warp shedding is early,
It is sectional drawing which showed the contact state of the rapier heads 1 and 2 and the warp W. Lower guide pieces 1a, 2 of both rapier heads 1, 2
a is a rapier guide piece 31 which is a rapier guide member of the machine base.
2 shows a state in which the guide groove is sliding.

[0009] As shown in FIG.
The first rapier head 1 is formed larger than the rapier head 2 of the carrier rapier 22, and the distance between the uppermost surface and the lowermost surface is large. Both upper warp W1 and lower warp W2
The uppermost surface of the rapier head 1 and the lower surface of the lower guide piece 1a, which is the lowermost surface of the rapier head 1, respectively contact almost simultaneously. After that, the upper warp W1 and the lower warp W2 are each bent at the contact position, and then the rapier head 1 comes out of the opening of the warp. In this case, the rapier head 1 receives a balanced pressing force from both the upper warp yarn W1 and the lower warp yarn W2, so that the difference between the two pressing forces is extremely small. In a state where the difference between the two pressing forces is applied as a frictional force, the lower guide piece 1a and the rapier band 21a slide in the guide grooves of the rapier guide piece 31 and the rapier guide 32, and they are worn. is there. Therefore, the warp cross timing is lower than that of a normal fabric.
Wear does not increase particularly.

However, as shown in FIG. 11, the rapier head 2 of the carrier rapier 22 has
The lower warp W2 comes in contact with the lower surface of the lower guide piece 1a, which is the lowermost surface of the lower warp first, and the upper warp W1 comes in contact with the upper surface with a delay. Accordingly, the rapier head 2 of the carrier rapier 22 receives an unbalanced pressing force from both the upper warp W1 and the lower warp W2, and the above-described problem occurs. In a rapier loom in which the positional relationship between the two rapier heads 1 and 2 is set on the basis of the upper surface, the carrier rapier 2 is used.
Conversely, the rapier head 2 receives the pressing force only from the upper warp W1, and the above-described problem also occurs.

Accordingly, an object of the present invention is to reduce the wear of the guide member of the rapier head and the guide groove of the machine stand in a woven fabric in which the closing timing of the warp shedding starts early, in view of the problems of the prior art. And to stabilize the running of the rapier head and the weft insertion.

[0012]

According to the present invention, there is provided a rapier head for a rapier loom, wherein the distance between the uppermost surface and the lowermost surface is adjustable.

The rapier head grips the weft from the yarn feeding side and advances to the center of the loom. The rapier head advances to the center of the loom from the opposite yarn feeding side, receives the weft from the insert rapier, and receives the weft from the insert rapier. A rapier head of the carrier rapier in a rapier loom having a pair of rapiers including a carrier rapier extending to the side.

Further, the rapier head may be constituted by a rapier head main body and a height adjusting member detachable from the rapier head main body and projecting upward or downward from the rapier head main body at the time of mounting.

Further, the rapier head is attached to the rapier head main body and to a side of the rapier head main body in a state of protruding above or below the rapier head main body, and the mounting position can be changed in a vertical direction. And a height adjusting member.

Also, by changing the detachable height adjusting member to a different one, the amount of protrusion of the height adjusting member from the rapier head main body is changed, and the distance between the uppermost surface and the lowermost surface of the rapier head is changed. It can be adjustable.

Further, the height adjusting member capable of changing the mounting position in the vertical direction has a long hole extending in the vertical direction.
The screw can be attached to the side of the rapier head body through the slot.

Further, the height adjusting member may be a side guide piece attached to a side of the rapier head main body.

Further, the height adjusting member can be protruded from the rapier head main body by detachably attaching the height adjusting member to one of the upper surface and the lower surface of the rapier head main body.

[0020]

According to the structure of the invention, in the rapier loom, the distance between the uppermost surface and the lowermost surface of the rapier head can be adjusted, and the lower direction from the upper warp thread applied to the uppermost surface of the rapier head and the lower surface applied to the lowermost surface. This is to adjust the balance between the pressing forces in the upward direction from the warp.

Further, in a rapier loom having a pair of rapiers composed of an insert rapier and a carrier rapier, the distance between the uppermost surface and the lowermost surface of the rapier head of the carrier rapier is adjusted according to the cloth cross timing. In a woven fabric with an early timing, the pressing force in the downward direction from the upper warp applied to the uppermost surface of the rapier head and the pressing force in the upward direction from the lower warp applied to the lowermost surface are balanced.

Further, the rapier head comprises a rapier head main body and a detachable height adjusting member.
The height adjusting member is protruded above or below the rapier head main body. Thereby, the distance between the uppermost surface and the lowermost surface of the rapier head is adjusted in accordance with the cross timing of the woven fabric, and in the woven fabric having a faster cross timing, the lower direction from the upper warp yarn added to the uppermost surface of the rapier head and the lower portion added to the lowermost surface This balances the pressing force in the upward direction from the warp.

Further, the rapier head is composed of a rapier head main body and a height adjusting member attached to a side portion of the rapier head main body, and by changing the mounting position of the height adjusting member in the up-down direction, the height of the height adjusting member is reduced. The amount of protrusion from the rapier head body upward or downward is changed. Thereby, the distance between the uppermost surface and the lowermost surface of the rapier head is adjusted in accordance with the cross timing of the woven fabric, and in the woven fabric having a faster cross timing, the lower direction from the upper warp yarn added to the uppermost surface of the rapier head and the lower portion added to the lowermost surface This balances the pressing force in the upward direction from the warp.

Further, by changing the height adjusting member to a different one, the protruding amount of the height adjusting member from the rapier head main body to one of upward and downward is changed. Thereby, the distance between the uppermost surface and the lowermost surface of the rapier head is adjusted in accordance with the cross timing of the woven fabric, and in the woven fabric having a faster cross timing, the lower direction from the upper warp yarn added to the uppermost surface of the rapier head and the lower portion added to the lowermost surface This balances the pressing force in the upward direction from the warp.

The height adjusting member has an elongated hole extending in the vertical direction. The height adjusting member is attached to the side of the rapier head body via the elongated hole by a screw. The amount by which the adjustment member projects upward or downward from the rapier head body is changed. Thereby, the distance between the uppermost surface and the lowermost surface of the rapier head is adjusted in accordance with the cross timing of the woven fabric, and in the woven fabric having a faster cross timing, the lower direction from the upper warp yarn added to the uppermost surface of the rapier head and the lower portion added to the lowermost surface This balances the pressing force in the upward direction from the warp.

By making the height adjusting member a side guide piece attached to the side of the rapier head main body, the height adjusting member also serves as the side guide piece.

A height adjusting member is detachably attached to one of the upper surface and the lower surface of the rapier head main body, and the height adjusting member is attached or detached, or the side guide piece is changed to a different one. The amount of protrusion of the height adjusting member upward or downward from the rapier head main body is changed. Thereby, the distance between the uppermost surface and the lowermost surface of the rapier head is adjusted according to the cross timing of the fabric,
In a woven fabric having a fast cross timing, the pressing force in the downward direction from the upper warp applied to the uppermost surface of the rapier head and the pressing force in the upward direction from the lower warp applied to the lowermost surface are balanced.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings. In all of the embodiments of the present invention, the rapier transport system uses a flexible band system,
In a rapier loom having a pair of rapiers consisting of an insert rapier and a carrier rapier. In addition, the running positional relationship between the insert rapier and the carrier rapier is based on the lower surface, and the lower surface of the lower guide piece, which is the lowermost surface of the rapier head, is at the same height position between the both rapier heads. The rapier head of the insert rapier has the same shape as that of the related art, does not have a height adjusting member, and cannot adjust the distance between the uppermost surface and the lowermost surface of the rapier head.

1 to 4 show a first embodiment of the present invention. In this embodiment, the rapier head of the carrier rapier is
It comprises a rapier head body and a height adjusting member. Further, the height adjusting member is provided with an elongated hole extending in the vertical direction, and is attached to a side portion of the rapier head body through the elongated hole with a screw, so that the mounting position of the height adjusting member can be changed in the vertical direction. It is.

FIG. 3 is a sectional view of the rapier head 2 of the carrier rapier 22 in a state where the guide groove of the rapier guide piece 31 shown in FIG. 4 is slid. The rapier head main body includes a rapier head main body 3, a lower guide piece 2a, and a side guide piece 4. The height adjusting member 5 is attached to the side of the rapier head main body 3 so as to be sandwiched between the rapier head main body 3 and the side guide piece 4, thereby constituting the rapier head 2. The rapier head 2 has a long guide and a lower guide piece 2a.
The lower guide piece 2 has a rapier band 22a having the same cross-sectional shape as
a, and constitutes the carrier rapier 22. The lower guide piece 2a and the rapier band 22a
Is made of a wear-resistant resin material. As shown in FIG. 4, a plurality of rapier guide pieces 31 are arranged between the warps, swing together with the reed R, and guide the rapier as the reed R retreats from the weave. Rest in position. The lower guide piece 2a fixed to the machine base of FIG.
Like the rapier guide 32 having the guide groove a, it is a rapier guide member of the machine and has the same guide groove. FIG.
It is a perspective view of height adjustment member 5. FIG. 4 shows a state in which the rapier head 2 of the carrier rapier 22 has receded to the weave end. When the rapier head 2 of the carrier rapier 22 retreats to the weaving end, the grip of the weft Y by the catch lever 2b of the rapier head 2 is released. The grip release protrusion 2ba of the catch lever 2b is pushed by the catch lever guide 33, and the catch lever 2b swings around the pin 2c. Thereby, the weft Y held by the catch lever 2b by the spring force is released. At this time, the side guide piece 4 of the rapier head 2 slides on the side surface of the side guide 34 attached to the rapier guide 32 while receiving the pressing force from the catch lever guide 33, and has abrasion resistance. It is made of resinous material. The catch lever guide 33 and the side guide 34 are attached to the rapier guide 32.

When the reed retreats and the warp opens, the weft insertion operation is started. The insert rapier grasps and advances the weft from the yarn supply side, and the carrier rapier advances from the non-yarn supply side, and the tip of the carrier rapier head at the center of the loom enters the rapier head of the insert rapier, where the weft is inserted. Receive. As shown in FIG. 4, the height adjusting member 5 is attached at a position away from the tip of the rapier head 2, and the height adjusting member 5 does not enter the rapier head of the insert rapier when the weft Y is delivered. . Thereafter, both rapier heads retreat to the original weaving machine end, and the leading end of the weft is conveyed to the weaving end on the non-supply side.

As shown in the sectional views of FIGS. 1 and 3, a height adjusting member 5 is attached to the rapier head 2 of the carrier rapier 22. Thus, the height adjusting member 5 is made to protrude from the upper surface of the rapier head main body 3 to form the uppermost surface of the rapier head 2. As shown in FIG. 2, the height adjusting member 5 is a thin metal plate, is provided with two elongated holes 5a extending in the vertical direction, and has an L-shaped cross section. The height adjusting member 5 is sandwiched between the side guide piece 4 and the rapier head main body 3, and is attached to the side of the rapier head main body 3 by a screw 12 through a long hole 5a. By changing the mounting position of the height adjusting member 5 in the vertical direction,
Of the upper surface of the height adjusting member 5, which is the uppermost surface of the rapier head 2,
The amount of protrusion from the rapier head body 3 is changed. Thus, the distance between the uppermost surface of the rapier head 2 and the lower surface of the lower guide piece 2a, which is the lowermost surface of the rapier head 2, is adjusted.

In a woven fabric having a normal warp opening cross timing, the warp and the rapier head do not come into strong contact with each other. However, in a woven fabric having a warp opening cross timing which is early, the closing operation of the warp starts early, and the rapier head is moved to the weft end. Before retreating to the vicinity of the warp, the contact with the warp is started, and gradually comes into strong contact with the warp until it comes out of the opening of the warp.

In a normal woven fabric, the height adjusting member 5 is attached in a state where it is lowered to the lowest position. In addition to reducing the contact with the warp as much as possible, the uppermost surface of the rapier head 2 is made as low as possible to reduce air resistance and not to hinder high-speed operation.

As shown in FIG. 3, in the case of a woven fabric in which the cross timing of the warp shedding is early, the mounting position of the height adjusting member 5 is changed upward to increase the amount of protrusion from the rapier head main body 3 to adjust the height. The upper surface of the member 5 is made substantially the same height as the upper surface of the rapier head 1 of the insert rapier 21 shown in FIG. FIG. 1 shows a state in which the warp W contacts the rapier head 2 before the rapier head 2 retreats to the vicinity of the weaving end. The upper warp W1 is placed on the upper surface of the height adjustment member 5 which is the uppermost surface of the rapier head 2, and the lower warp W2 is placed on the rapier head 2
Almost simultaneously with the lower surface of the lower guide piece 2a, which is the lowermost surface. After that, the upper warp W1 and the lower warp W2 are each bent at the contact position, and then the rapier head 2 comes out of the opening of the warp. Like the rapier head 1 of the insert rapier 21, the rapier head 2 has an upper warp W1 and a lower warp W
2 receives pressing forces A and B in the directions of the arrows, respectively. The pressing force A and the pressing force B are balanced, and the difference between the pressing forces A and B is extremely small. Therefore, like the rapier head 1 of the insert rapier 21, the lower guide piece 2
a and the rapier band 22a, and the wear of the guide grooves of the rapier guide piece 31 and the rapier guide 32, on which they slide, do not particularly increase as compared with a normal woven fabric in which the warp cross timing is used. In addition, running of rapier head,
No instability.

The position of the height adjusting member 5 may be adjusted so that the upper surface of the height adjusting member 5 is higher than the upper surface of the rapier head 1 of the insert rapier 21. The rapier head 2 is pressed against the guide grooves of the rapier guide piece 31 and the rapier guide 32 by the warp,
Raising of the rapier head 2 can be prevented. This is effective when there is a large play in the vertical direction between the lower guide piece 2a and the guide groove, and prevents the rapier head 2 from vibrating in the vertical direction, thereby stabilizing traveling. In this way,
The distance between the upper surface of the height adjusting member 5 that is the uppermost surface of the rapier head 2 and the lower surface of the lower guide piece 2a that is the lowermost surface of the rapier head 2 is adjusted according to the cloth cross timing.

Next, FIGS. 5 and 6 show a second embodiment of the present invention. In the present embodiment, similarly to the first embodiment, the rapier head of the carrier rapier includes a rapier head main body and a height adjusting member. In addition, the height adjusting member is provided with an elongated hole extending in the vertical direction, and is attached to a side portion of the rapier head body through the elongated hole with a screw, so that the mounting position of the height adjusting member can be changed in the vertical direction. It is. Further, the height adjusting member is also used as the side guide piece. In the following embodiment, the height adjusting member is attached at a position distant from the tip of the rapier head as in the first embodiment, and when the weft is transferred, the height adjusting member is attached to the rapier head of the insert rapier. Never penetrate

FIG. 5 shows a side guide piece 6 which is a height adjusting member.
5 is an L-shaped cross-section, and has an elongated hole 6a extending vertically and two recessed grooves in the screw head. FIG. 6 is a cross-sectional view of the rapier head 2 in a state where the rapier guide piece 31 slides in the guide groove. The rapier head main body includes a rapier head main body 3 and a lower guide piece 2a. The upper surface of the side guide piece 6 protrudes upward from the rapier head body 3 and becomes the uppermost surface of the rapier head 2. In a normal woven fabric, the side guide pieces 6 are attached with the screws 13 in a state of being lowered to the lowest position. This is to make the uppermost surface of the rapier head 2 as low as possible to reduce the contact with the warp yarns, reduce the air resistance, and do not hinder high-speed operation. As shown in FIG. 6, in the case of a woven fabric in which the warp cross timing is early, the mounting position of the side guide piece 6 is changed upward to increase the amount of protrusion from the rapier head main body 3, and the upper surface of the side guide piece 6 Is approximately the same height as the upper surface of the rapier head 1 of the insert rapier 21 shown in FIG. In this manner, in the same manner as in the first embodiment, the upper surface of the side guide piece 6 that is the uppermost surface of the rapier head 2 and the lower surface of the lower guide piece 2a that is the lowermost surface of the rapier head according to the cross timing of the fabric. The same effect as in the first embodiment is obtained by adjusting the distance. The side guide piece 6 may have a rectangular cross section instead of an L-shaped cross section to reduce the size of the rapier head 2.

Next, FIG. 7 shows a third embodiment of the present invention. In the present embodiment, similarly to the first embodiment, the rapier head of the carrier rapier is composed of a rapier head main body and a height adjusting member. Further, by using the height adjusting member as a side guide piece, the height adjusting member also serves as the side guide piece, and is detachably attached to the side of the rapier head main body. By changing the height adjusting member to a different one, the amount of protrusion from the rapier head main body is changed. The figure shows a cross section of the rapier head 2 in a state where the rapier guide piece 31 slides in a guide groove. The rapier head body includes a rapier head body 3 and a lower guide piece 2a.

In a woven fabric in which the warp cross timing is early,
A height adjusting member 7 having an L-shaped cross section is attached to a side portion of the rapier head main body 3 by a screw 12. Height adjustment member 7
The upper surface protrudes from the rapier head main body 3 and becomes the uppermost surface of the rapier head 2. Alternatively, the height adjusting member 7 may have a rectangular cross section instead of an L-shaped cross section, and may protrude from the rapier head main body 3 to reduce the size of the rapier head 2. The position of the upper surface of the height adjusting member 7 is substantially the same as the upper surface position of the rapier head 1 of the insert rapier 21 in FIG. For woven fabrics with normal warp cross timing,
The height adjusting member 7 is replaced with a member having a lower rectangular cross section, and the amount of protrusion from the rapier head main body 3 is reduced. In this manner, as in the first embodiment, the upper surface of the height adjusting member 7 that is the uppermost surface of the rapier head 2 and the lower surface of the lower guide piece 2a that is the lowermost surface of the rapier head, according to the cloth cross timing. The same effect as in the first embodiment is obtained by adjusting the distance.

Next, FIG. 8 shows a fourth embodiment of the present invention. In the present embodiment, the rapier head of the carrier rapier is composed of a rapier head main body and a height adjusting member as in the first embodiment. The height adjusting member is detachably attached to the side of the rapier head body opposite to the side to which the side guide piece is attached. By attaching the height adjusting member, the height adjusting member is made to protrude upward from the rapier head main body to be the uppermost surface of the rapier head. Further, by removing the height adjusting member, the upper surface of the rapier head body is made the uppermost surface of the rapier head. The figure is a cross-sectional view of the rapier head 2 in a state where the rapier guide piece 31 is sliding in a guide groove.
The rapier head main body includes a rapier head main body 8, a lower guide piece 2a, and a side guide piece 4.

In a woven fabric having a normal warp cross timing, the height adjusting member 9 is not attached to the rapier head main body 8. For woven fabrics with early warp cross timing, L
A height adjusting member 9 having a shaped cross section is attached to the side of the rapier head body 8 opposite to the side guide piece 4 by a screw 12. The upper surface of the height adjusting member 9 protrudes from the rapier head main body 8 and becomes the uppermost surface of the rapier head 2. In addition,
The position of the upper surface of the height adjusting member 9 is substantially the same as the upper surface position of the rapier head 1 of the insert rapier 21 in FIG. Further, the height adjusting member 9 may be attached to the same side of the rapier head main body 8 adjacent to the side guide piece 4. In this case, the height adjusting member 9 is prevented from protruding laterally beyond the side guide piece 4. Thus, as in the first embodiment, the uppermost surface of the rapier head 2 is changed to the upper surface of the height adjusting member 9 or the upper surface of the rapier head body 8 in accordance with the cloth cross timing. Thereby, the distance between the uppermost surface of the rapier head 2 and the lower surface of the lower guide piece 2a, which is the lowermost surface of the rapier head 2, is adjusted, and the same effect as in the first embodiment is obtained. In addition, in a normal woven fabric, the rapier head 2 has the same shape as that in the related art, and there is no specially attached one. Therefore, the rapier head can be made compact, warp yarns can be prevented from contacting, and high-speed operation is possible.

Next, FIG. 9 shows a fifth embodiment of the present invention. In the present embodiment, similarly to the first embodiment, the rapier head of the carrier rapier is composed of a rapier head main body and a height adjusting member. The height adjusting member is detachably attached to the upper surface of the rapier head main body. By attaching the height adjusting member, the height adjusting member is made to protrude upward from the rapier head main body to be the uppermost surface of the rapier head. Further, by removing the height adjusting member, the upper surface of the rapier head body is made the uppermost surface of the rapier head. FIG. 9 is a cross-sectional view of the rapier head 2 in a state where the rapier head slides on the guide groove of the rapier guide piece 31. The rapier head main body includes a rapier head main body 10, a lower guide piece 2a, and a side guide piece 4.

In a woven fabric having a normal warp cross timing, the height adjusting member is not mounted. In a woven fabric in which the cross timing of the warp is early, the height adjusting member 11 having a rectangular cross section is
It is attached to the upper surface of the rapier head body 10 by screws 12. The upper surface of the height adjusting member 11 projects from the rapier head main body 10 and becomes the uppermost surface of the rapier head 2. In addition, the position of the upper surface of the height adjusting member 11 corresponds to the upper surface position of the rapier head 1 of the insert rapier 21 in FIG.
They are almost at the same height. Thus, as in the first embodiment, the uppermost surface of the rapier head 2 is changed to the upper surface of the height adjusting member 11 or the upper surface of the rapier head body 10 in accordance with the cloth cross timing. Thereby, the uppermost surface of the rapier head 2 and the rapier head 2
By adjusting the distance to the lower surface of the lower guide piece 2a, which is the lowermost surface, the same effect as in the first embodiment can be obtained. In addition, in a normal woven fabric, the rapier head 2 has the same shape as that in the related art, and there is no specially attached one. Therefore, the rapier head can be made compact, warp yarns can be prevented from contacting, and high-speed operation is possible. Further, by replacing the height adjusting member 11 with a different one, for example, a thicker one, the height adjusting member 11
May be higher than the upper surface position of the rapier head 1 of the insert rapier 21 in FIG. The rapier head 2 is pressed against the guide grooves of the rapier guide piece 31 and the rapier guide 32 by the warp, so that the rapier head 2 can be prevented from floating.

The embodiments of the present invention all relate to a rapier loom having a pair of rapiers composed of an insert rapier and a carrier rapier, wherein the rapier transport system adopts a flexible band system, and the uppermost surface of the rapier head of the carrier rapier. And the distance between the lowermost surface and the lowermost surface can be adjusted. However, the present invention may be applied to a rapier head of a rapier loom having only one rapier. The present invention is implemented when the running position of the rapier head is shifted to either the upper or lower warp of the warp shed. Further, the present invention may be applied to a rigid-type rapier loom instead of a flexible band type. As in the case of the flexible band system, it is possible to prevent the wear of the rapier head and its guide member from being promoted in a fabric having a fast cross timing. Further, the present invention may be applied to a rapier head of an insert rapier. When the rapier head of the insert rapier retreats near the weaving end, the lower guide piece of the rapier head is
It is intended to be pressed against one of the guide grooves.
This prevents the lower guide piece from moving up and down when sliding in the guide groove, and can stabilize the running of the rapier even when the vertical play between the lower guide piece and the guide groove is large. Further, the traveling positional relationship between both the insert rapier and the carrier rapier head may be based on the upper surface. In that case, contrary to the present embodiment, the height adjusting member is projected downward from the lower surface of the rapier head body of the carrier rapier.

[0046]

As described above, according to the structure of the present invention, the distance between the uppermost surface and the lowermost surface of the rapier head can be adjusted according to the cross timing of the warp shedding. In a woven fabric in which the cross timing of the warp opening is early, the distance between the uppermost surface and the lowermost surface of the rapier head is increased. This balances the pressing forces from the upper and lower warps when the rapier head retreats to the vicinity of the end of the fabric, thereby preventing the wear of the rapier guide member and the guide groove from increasing, and stabilizing the running of the rapier head. can do. In a woven fabric where the cross timing of the opening of the warp is normal,
By making the distance between the uppermost surface and the lowermost surface of the rapier head as small as possible, the rapier head can be made compact as in the prior art, minimizing the contact between the warp and the rapier head during weft insertion and enabling high-speed operation. Is what you do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a closing operation of a warp opening according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a height adjusting member according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a rapier head and a rapier guide piece according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a weft grip release operation of the rapier head according to the first embodiment of the present invention.

FIG. 5 is a perspective view of a height adjusting member according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a rapier head and a rapier guide piece according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a rapier head and a rapier guide piece according to a third embodiment of the present invention.

FIG. 8 is a sectional view of a rapier head and a rapier guide piece according to a fourth embodiment of the present invention.

FIG. 9 is a sectional view of a rapier head and a rapier guide piece according to a fifth embodiment of the present invention.

FIG. 10 is a sectional view showing the operation of closing the rapier head of the insert rapier and the opening of the warp.

FIG. 11 is a cross-sectional view showing a rapier head of a carrier rapier and a closing operation of an opening of a warp in a conventional technique.

FIG. 12 shows a rapier loom having a pair of rapiers consisting of an insert rapier and a carrier rapier according to the prior art.
Top view showing rapier wefting operation

[Explanation of symbols]

 1 ... rapier head 1a ... lower guide piece 2 ... rapier head 2a ... lower guide piece 3 ... rapier head main body part 4 ... side guide pieces 5, 6, 7, 9 , 11 ... Height adjustment member 12, 13 ... Screw 21 ... Insert rapier 21a ... Rapier band 22 ... Carrier rapier 22a ... Rapier band 31 ... ... Rapier guide piece 32 ... … Rapier guide Y… weft W1… upper warp W2… lower warp R ……… reed

Claims (8)

[Claims] 1. A rapier head in a rapier loom, wherein the distance between the uppermost surface and the lowermost surface of the rapier head is adjustable. 2. The rapier head includes an insert rapier gripping the weft from the yarn supply side and advancing to the center of the loom, and an insert rapier advancing from the non-yarn supply side to the center of the loom, receiving the weft from the insert rapier and pulling the weft from the insert rapier to the anti-weft side. The rapier head of the rapier loom according to claim 1, wherein the rapier head is a rapier head of the carrier rapier having a pair of rapiers formed of a carrier rapier to pass through. 3. The rapier head comprises a rapier head main body and a height adjusting member detachable from the rapier head main body and projecting upward or downward from the rapier head main body when the rapier head main body is mounted. A rapier head in the rapier loom according to claim 1. 4. A rapier head main body and a height which is attached to a side portion of the rapier head main body in a state protruding above or below the rapier head main body and whose mounting position can be changed vertically. The rapier head in the rapier loom according to claim 1, wherein the rapier head comprises a height adjusting member. 5. A rapier head in a rapier loom according to claim 3, wherein the height of said height adjusting member is changed from said rapier head body by changing said height adjusting member to a different one. . 6. The rapier according to claim 4, wherein said height adjusting member has an elongated hole extending in a vertical direction, and is attached to a side portion of said rapier head body via said elongated hole by a screw. Rapier head in loom. 7. A rapier head in a rapier loom according to claim 3, wherein said height adjusting member is a side guide piece attached to a side of said rapier head main body. 8. The rapier head according to claim 3, wherein the height adjusting member is detachably attached to one of an upper surface and a lower surface of the rapier head main body.