JPH1077545A - Support piece and support apparatus in rapier loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support piece or a support apparatus in a rapier loom, capable of avoiding the breakage of the tip part of a weft gripped by a rapier head. SOLUTION: A great number of support pieces 12 are arranged in the longer direction of a slay 11 in front of the slay 11. A delivering repair head 13 which holds a weft and inserts it into an opening between warps is traveled on the line of the support pieces 12. A repair head 14 which receives the weft from the delivering repair head 13 and retreating from the opening of the warps is also traveled on the line. Each top part 122 of the support pieces 12 is in a flat shape and recessed parts 123 are formed at the central parts of the top parts 122.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rapier head attached to the tip of a rapier band, which is inserted into a warp shed and retracted from the warp shed to insert a weft.
The present invention relates to a support piece and a support device in a rapier loom in which support pieces for supporting a running rapier band are arranged in a weft insertion direction.

[0002]

2. Description of the Related Art A support device in which support pieces are arranged on a slay so that a rapier head or a rapier band does not rub a warp yarn is well known. JP-A-3-45
In the device disclosed in Japanese Patent No. 747, the first end extends to the reed side.
Are alternately arranged in a row, and second guide elements extending so that the tip side is separated from the reed side. The upper end of the first guide element is below the travel path of the rapier band, and the upper end of the second guide element is formed with a recess. First
The upper end of the guide element contacts the lower surface of the running rapier band to support the rapier band, and the recess of the second guide element guides the side edge of the rapier band. In the device disclosed in JP-A-5-209341, the upper end of a spacer (support piece in the present application) is flat, and a rapier band is guided along a plane formed by the flat upper ends of the spacers arranged in rows. .

[0003]

Problems to be Solved by the Invention Japanese Patent Application Laid-Open No. 3-45747
In the device disclosed in Japanese Patent Application Laid-Open Publication No. H11-27139, the above-mentioned pair of guide elements is used to enable weft insertion of the rapier head even when the slay is swinging. However, Japanese Patent Application Laid-Open No. 2-191
As disclosed in Japanese Patent No. 744, the rapier head slightly rises and then descends as it travels from the insertion start end side into the warp shedding to the insertion end side. Therefore, the rapier band has a mountain shape, but such deformation of the rapier band hinders the side edge of the rapier band from entering the concave portion. Unless the side edge of the rapier band enters the recess, stable running of the rapier head cannot be expected. Even if the rapier head is wefted in when the slay is not swinging, if the side edge of the rapier band enters the recess, the running resistance of the rapier band is large, and the side edge of the rapier band is easily damaged.

In the device disclosed in Japanese Patent Laid-Open No. 5-209341, since the rapier band is guided on the flat upper end of the spacer, problems such as running resistance and damage to the rapier band can be avoided. However, in a running state in which the rapier head rises slightly and then descends, it collides with the upper end of the spacer as the rapier head descends. In general, the rapier head is made of metal and has a sharp tip, so that a collision may damage the spacer. In addition, the end of the weft held by the rapier head is in a free state, and the free end may be cut by a collision of the rapier head with the spacer state. If the cut free end is woven into the woven fabric, the cut free end becomes a woven flaw. Further, when the sprocket hole portion formed in the rapier band slides on the upper end of the spacer, peeling or abrasion occurs at that portion, which may adversely affect the weft insertion.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent breakage of a support piece and avoid cutting of a leading end of a weft held by a rapier head.

[0006]

According to the first aspect of the present invention, a flat top for supporting a rapier band is formed at the upper end of a support piece, and a support strip is formed at the center of a row of the tops. The device was configured.

[0007] The free end of the weft held by the rapier head is guided in the concave streak. Therefore, even if the rapier head inserted into the warp shed collides with the top of the support piece, the free end is not sandwiched between the rapier head and the top, and the free end is not cut. . Further, the tip of the rapier head does not collide with the upper end of the support piece due to the presence of the concave streak, thereby preventing the support piece from being damaged.

According to the second aspect of the present invention, the first support piece element and the second support piece element are adjacent to each other to constitute the support piece, and the top of each support piece element is flattened, and the first support piece element is flattened. The support device was constructed by shifting the top of the support piece element and the top of the second support piece element in the warp yarn direction.

The top side of the first support piece and the top side of the second support piece are displaced in the warp yarn direction,
A concave streak is formed between the top side of the first support piece and the top side of the second support piece. The free end of the weft held by the rapier head is guided in the concave streak.

According to the third aspect of the present invention, the transfer rapier head and the receiving rapier head are used, and the support piece according to any one of the first and second aspects is mounted at least near the insertion end of the transfer rapier head and the receiving rapier head. A support device arranged near the insertion end was constructed.

When the delivery rapier head is inserted into the warp shed, it collides with the support piece near the end of insertion.
Further, the receiving rapier head collides with the support piece near the insertion start end when retracting from the inside of the warp shed. Therefore, if the support pieces are arranged at least near the insertion end of the receiving rapier head and near the insertion start end of the receiving rapier head, the cutting of the free end can be avoided.

In the invention according to claim 4, the rapier band is wound around a reciprocatingly rotating sprocket wheel and driven so that the top of the support piece is in contact with both sides of the row of sprocket holes of the rapier band.

[0013] The sprocket hole is guided on the concave streak. Therefore, the edge of the sprocket hole does not wear due to sliding contact with the support piece. In the invention of claim 5, a flat top portion for supporting the rapier band is formed at the upper end of the support piece for supporting the running rapier band, and a concave portion is provided at the center of the top portion.

The free end of the weft held by the rapier head is guided in the recess. Therefore, even if the rapier head inserted into the warp shed collides with the top of the support piece, the free end is not sandwiched between the rapier head and the top, and the free end is not cut. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

The rapier bands 17, 18 are separately wound around a pair of sprocket wheels (not shown).
As shown in FIG. 1, sprocket holes 171 and 181 are arranged in the rapier bands 17 and 18, and the teeth of the sprocket wheel mesh with the sprocket holes 171 and 181. The delivery rapier head 13 and the receiving rapier head 14 attached to the tips of the rapier bands 17 and 18 are inserted into the opening of the warp T by the forward rotation of the sprocket wheel. Then, the delivery rapier head 13 and the receiving rapier head 14 are retracted from the opening of the warp T by the backward rotation of the sprocket wheel. A large number of support pieces 12 are arranged in a row along the longitudinal direction of the slay 11 on the front surface of the slay 11 that supports the reed 10. The delivery rapier head 13 for gripping the weft Y and inserting it into the warp shed is a support piece 1
Drive on row 2. The receiving rapier head 14 that receives the weft yarn Y from the transfer rapier head 13 and retreats from the warp shed also runs on the row.

As shown in FIG. 3, the support piece 12
The head 151 is fixed to the slay 11 by tightening the bolt 15 and the nut 16 housed in the mounting groove 111 on the front of the slay 11. As shown in FIG. 2, the base end 121 of the support piece 12 has an angle shape to be joined to the corner of the slay 11,
Has a flat plate shape parallel to the yarn direction of the warp T. The flat upper portion has a divergent shape, and its thickness is set to a size that allows the warp T to be pushed out and entered into the opening of the warp T. The top 122 of the support piece 12 has a flat shape, and a recess 123 is formed at the center of the top 122. The rows of the concave portions 123 are concave stripes 2 in the weft insertion direction.
Form 2

As shown in FIG. 3, the rapier bands 17, 1
8 travels on the top 122 of the support piece 12. The running path of the sprocket holes 171 and 181 is immediately above the concave portion 123, and the edges of the sprocket holes 171 and 181 do not interfere with the support piece 12.

According to the first embodiment, the following effects can be obtained. (1-1) As shown in FIG. 4 (a), when the delivery rapier head 13 is inserted into the opening of the warp T, the delivery rapier head 13 rises somewhat as shown by a chain line. Then, the delivery rapier head 13 lands on the top 122 of the support piece 12 near the insertion end, that is, near the encounter position with the receiving rapier head 14. When the delivery rapier head 13 retreats from the opening of the warp T, the delivery rapier head 13 rises slightly and then closes to the top 12 of the support piece 12 near the insertion start end.
Land on 2. Further, as shown in FIG. 4B, when the receiving rapier head 14 is inserted into the opening of the warp T, the receiving rapier head 14 rises slightly and then near the insertion end, that is, with the delivery rapier head 13. Landing on the top 122 of the support piece 12 near the meeting position. When the receiving rapier head 14 retreats from the opening of the warp T, the receiving rapier head 14 rises slightly, and then the support piece 1 near the insertion start end.
2 lands on top 122.

The delivery rapier head 13 and the receiving rapier head 14 are configured as disclosed in FIG. 2 of Japanese Patent Laid-Open No. 5-209341, and the weft yarn Y gripped by the delivery rapier head 13 and the receiving rapier head 14 is shown in FIG. The free end Y1 of FIG.
As shown in (b), it comes below the delivery rapier head 13 and the receiving rapier head 14. If the free end Y1 is sandwiched between the delivery rapier head 13 and the support piece 12 when the delivery rapier head 13 holding the weft Y lands near the insertion end,
The free end Y1 may be cut. Similarly, if the free end Y1 is caught between the receiving rapier head 14 and the support piece 12 when the receiving rapier head 14 holding the weft Y lands near the insertion start end, the free end Y1 may be disconnected.

In this embodiment, the free end portion Y1 is guided in the concave streak 22 formed by the row of the concave portions 123. Therefore, the free end Y1 is not caught between the delivery rapier head 13 and the support piece 12, or between the reception rapier head 14 and the support piece 12, and there is no possibility that the free end Y1 is cut. (1-2) The sprocket hole 171 is guided on the recess 123. Therefore, the edge of the sprocket hole 171 does not interfere with the support piece 12, and the presence of the concave portion 123 contributes to the prevention of wear of the sprocket hole 171. (1-3) The mounting position of each support piece 12 in the weft insertion direction can be adjusted by loosening the tightening of the bolt 15 and the nut 16. Therefore, support piece 1
The setting of the arrangement pitch of No. 2 can be changed as needed.

Next, a second embodiment shown in FIG. 5 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, a plurality of support pieces 1
9 are integrally formed on a single proximal end 191. According to such a configuration, the work of attaching and detaching the support piece 19 to and from the slab 11 becomes easy.

Next, a third embodiment shown in FIG. 6 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the first support piece elements 20 and the second support piece elements 21 are alternately arranged. When viewed in the weft insertion direction, the top 201 of the first support piece element 20 and the top 211 of the second support piece 21 are displaced in the yarn direction of the warp T, and the first support piece element A concave streak 22 is formed between the upper end side of 20 and the upper end side of the second support piece element 21. The free end portion Y1 is guided in the concave streak 22, between the transfer rapier head 13 and the support piece elements 20, 21, or between the transfer rapier head 14 and the receiver rapier head 14.
And between the support piece elements 20 and 21.

According to the present invention, the support pieces provided with the concave portions are arranged only in the vicinity of the insertion end of the delivery rapier head and near the insertion start end of the reception rapier head, and the support pieces without the concave portions are arranged in other regions. Is also good.
When the delivery rapier head is inserted into the warp shed, it collides with the support piece near the insertion end. Further, the receiving rapier head collides with the support piece near the insertion start end when retracting from the inside of the warp shed. Therefore, if the support pieces are arranged at least near the insertion end of the receiving rapier head and near the insertion start end of the receiving rapier head, cutting of the free end of the weft can be avoided.

[0025]

As described above in detail, according to the present invention, a flat top for supporting the rapier band is formed at the upper end of the support piece, and a concave streak is formed at the center of the row of the top. And the cutting of the leading end of the weft held by the rapier head can be avoided.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view showing a first embodiment.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is a sectional side view of a main part.

FIG. 4A is a front sectional view showing a traveling state of a delivery rapier head. (B) is a front sectional view showing a running state of the receiving rapier head.

FIG. 5 is an enlarged perspective view of a main part showing a second embodiment.

FIG. 6 is an enlarged perspective view of a main part showing a third embodiment.

[Explanation of symbols]

12 ... support piece, 122 ... top, 123 ... recess,
19 ... support piece, 20, 21 ... support piece element, 201, 211 ... top, 22 ... concave streak.

Claims (5)

[Claims] 1. A rapier head attached to the tip of a rapier band is inserted into a warp shedding, and is evacuated from the warp shedding to insert a weft, and support pieces for supporting the running rapier band are arranged in a row in the weft inserting direction. A support device for a rapier loom, wherein a flat top for supporting a rapier band is formed at an upper end of the support piece, and a concave streak is formed at the center of a row of the top. 2. The support piece is constituted by adjoining a first support piece element and a second support piece element, a top of each support piece element is flattened, and a first support piece element is provided. 2. The method according to claim 1, wherein the top and the top of the second support piece element are shifted in the warp yarn direction.
The support device in the rapier loom as described in [1]. 3. A rapier head for delivery and a rapier head for receiving, wherein the support pieces forming the concave stripes are arranged at least near the insertion end of the rapier head for delivery and near the insertion start end of the rapier head for reception. A support device in a rapier loom according to any one of claims 1 and 2. 4. The rapier band according to claim 1, wherein the rapier band is wound around and driven by a reciprocatingly rotating sprocket wheel, and a top of the support piece is in contact with both sides of a row of sprocket holes of the rapier band. A support piece in the described rapier loom. 5. A rapier head attached to the tip of a rapier band is inserted into a warp shedding, and is evacuated from the warp shedding to insert a weft, and support pieces for supporting the running rapier band are arranged in a row in the weft inserting direction. A support piece for a rapier loom, wherein a flat top for supporting a rapier band is formed at an upper end of the support piece, and a concave portion is provided at a center of the top.