JP2000239947A - Rapier head for lead-in foil loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rapier head for a lead-in foil loom for weaving activities using both foil yarns and linear yarns as wefts, enabling weft inserting mechanism to be simplified and stable weaving operations to be conducted without occurrence of any weave defects. SOLUTION: In an one-side rapier loom 1 acting so as to make a weft insertion using this rapier head 2 provided with a weft catch part 4 for an ordinary yarn 5, the tip of the rapier head 2 is furnished with a guide 7 for foil lead-in use, a guide face 9 is formed to guide a foil yarn 6 in such a design as to thread the guide 7 with the foil yarn 6, and the ridge line 9a of the guide face 9 is provided so as to be nearly parallel to the bottom face 2a of the rapier head 2 and nearly rectangular to the direction of the movement of the rapier head 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapier head for a drawing foil loom for wefting a weft yarn in addition to a normal yarn.

[0002]

2. Description of the Related Art When weaving bands for Japanese clothes, in addition to linear yarns used for weaving general woven fabrics, that is, ordinary yarns, foil yarns are used for decorative weaving. This foil thread is
It is a thread with a rectangular cross section made by cutting a thin sheet into a thin width.

At present, weaving by weft insertion of ordinary yarn and weaving by drawn foil are performed by adding a weft insertion mechanism of a bar-shaped rapier for foil yarn to a shuttle loom capable of weft insertion for ordinary yarn. It is performed by a loom. In such a configuration, since two weft insertion mechanisms are provided for two types of wefts, the weft insertion mechanism is mechanically complicated, and a bar-shaped rapier is used.

On the other hand, Japanese Patent Laid-Open Publication No. Sho 58-70744 discloses a "flexible rapier loom having an active gripping device", in which a rapier head can grip a wide variety of wefts such as a foil thread or a linear thread in a single-sided flexible rapier loom. Configuration.

[0005] However, the loom disclosed in Japanese Patent Application Laid-Open No. 58-70744 has the following problems. The foil thread is supplied in a posture extending perpendicularly to the running direction of the rapier head, that is, a vertical plane including the axis. For this reason, the grip portion of the foil thread is twisted by 90 degrees around the axis, and in this state, the foil thread is drawn into the opening of the warp. Due to the nature of the decorative weave, the foil yarn should be wefted without twisting or turning over. However, in reality, according to the above technology, twisting and turning over occur. The occurrence of the twisting or turning over causes a weaving flaw due to the breakage of the foil thread, and also causes a lack of a pattern or a glossy spot.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a draw-foil loom for weaving using both a foil yarn and a linear yarn as a weft, thereby enabling a weft insertion mechanism to be simplified and reducing the weaving defect. It is to enable stable weaving without occurrence.

[0007]

According to the above object, the present invention provides a single-sided rapier loom in which weft is inserted by a rapier head having a weft catching portion for a normal yarn, wherein a guide portion for drawing in a foil is formed at a tip portion of the rapier head. In addition, a guide surface for guiding the foil thread is formed in such a shape that the foil thread can be inserted into the guide portion, and the ridge of the guide surface is substantially parallel to the bottom surface of the rapier head and substantially perpendicular to the moving direction of the rapier head. It is formed so that.

According to the present invention, in a specific example, a roller is rotatably provided at a ridge portion while employing the above-described basic configuration.

[0009]

1 to 4 show a rapier head 2 in a single-sided rapier loom 1 according to the present invention. The rapier head 2 is fixed to the distal end of a flexible rapier band 3, and a linear ordinary thread 5 is positioned at the side of the distal end.
In order to insert the weft, a weft catcher 4 has a hook-shaped fixed catch receiver 4a and a movable catch piece 4b urged by a spring (not shown) or the like.

Further, the guide portion 7 is formed integrally with the rapier head 2 in order to draw in the foil thread 6 at the tip end thereof. This guide portion 7 is used to insert the foil thread 6
It has a hole 8 that is open from the top surface to the bottom surface,
In order to draw the foil thread 6 in the weft insertion direction, a guide surface 9 is formed on the surface behind the hole 8 in the weft insertion direction.

In this embodiment, of the lower ridge 9a and the lower ridge 9b of the guide surface 9, at least the lower ridge 9a, more precisely, the plane including the ridge 9a is formed by the rapier head 2. Parallel to the bottom surface 2a and the ridge portion 9
a is formed so as to be orthogonal to the axis of the rapier head 2, that is, the weft insertion direction. Here, the above-mentioned meanings of "parallel" and "orthogonal" mean substantially parallel and substantially orthogonal, respectively, to the extent that the twisting or turning over of the foil thread 6 is prevented in the drawing process (weft insertion process) of the foil thread 6. It is.

FIG. 5 shows an outline of the single-sided rapier loom 1. The rapier band 3 is driven by driving means 12 on one side of the one-side rapier loom 1, and on the front side of the reed 13,
It reciprocates inside the opening 15 formed by the upper and lower warps 14, receives the normal yarn 5 from the weft selecting mechanism 11 according to the weaving structure on the other side, and inserts the weft into the opening 15; The foil thread 6 is received from the foil thread supply mechanism 10 and is similarly drawn into the opening 15 and inserted into the weft.

As shown in FIG. 1, the rapier band 3 is held on a mounting table 19 by a fixed guide 16 and a movable guide 17 so as to be reciprocally movable.
5 so as to travel at a predetermined weft insertion position. In addition, the movable guide 17 is attached to an attachment base 19 so as to be adjustable by an adjustment bolt 18.

The rapier head 2 receives the normal yarn 5 selected by the weft selecting mechanism 11 by the catch receiver 4a of the weft catching section 4 when wefting the continuous thread 5 and wefts the same.
It is captured by holding it down with b and pulled into the inside of the opening 15 for weft insertion.

Further, the rapier head 2 temporarily stops at the receiving position of the foil thread 6 when wefting the foil thread 6.
Here, as shown in FIGS. 2 and 3, the foil thread supply mechanism 10 supplies the foil thread 6 from above the rapier head 2 toward the hole 8 of the guide section 7, and supplies the foil thread 6 to the guide section 7. Insert through hole 8. In this state, the pair of gripping means 20 on the lower side of the rapier head 2 hold the leading end of the foil thread 6 inserted through the hole 8 and fix it at that position.

Then, as shown in FIGS. 3 and 4, when the rapier head 2 moves in the retreating direction, the foil yarn 6 is drawn into the opening 15 of the warp 14 while being slidably guided by the guide surface 9. . At this time, since the lower ridge 9a is formed substantially parallel to the bottom surface 2a of the rapier head 2 and substantially perpendicular to the running direction of the rapier head 2, the foil thread 6 is The posture at the time of weft insertion is regulated by 9a, and the weft is inserted into the opening 15 without twisting or turning over. Of course, the foil thread 6 is formed to a length necessary for weft insertion, and the weft insertion is completed only by the retreat of the rapier head 2.

Incidentally, the configuration of the guide portion 7 is not limited to the specific example described above, but may be attached to the side of the distal end portion instead of the configuration projecting from the distal end of the rapier head 2.
As shown in FIG. 7, instead of the hole 8, a hook-shaped notch 8 a opened on one side can be formed.

Further, since the guide surface 9 guides the foil thread 6 with an appropriate resistance, in order to improve the resistance of the sliding contact guide, as shown in FIG. Instead of a typical one, as a slightly curved one, or FIG.
As shown in FIG. 7, a rotatable columnar or middle-high roller 21 may be incorporated in the ridge 9a. Of course, each of the above specific examples can be implemented in combination of two or more unless there is a contradiction in the configuration.

[0019]

According to the present invention, in a one-sided rapier loom, the rapier head has a weft holding portion for a normal yarn and has a guide portion for drawing in a foil yarn, and the guide portion guides the foil yarn. Since it has a surface and has a ridge portion that regulates the attitude of the foil yarn at the time of pulling in, the weft insertion mechanism can be simplified, no weaving defects occur, and stable weaving is possible. Further, according to the example in which the roller is provided on the guide surface, the resistance of the sliding contact guide to the foil thread can be reduced, so that the weft insertion operation can be performed lightly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rapier head for a drawing foil loom of the present invention.

FIG. 2 is an enlarged perspective view of a main part of a rapier head for a drawing foil loom of the present invention.

FIG. 3 is an enlarged perspective view of a main part of a rapier head for a drawing foil loom of the present invention.

FIG. 4 is an enlarged vertical sectional view of a guide portion at the tip of a rapier head.

FIG. 5 is a schematic plan view of a one-sided rapier loom.

FIG. 6 is an enlarged perspective view of a guide portion at the tip of another rapier head.

FIG. 7 is an enlarged perspective view of a guide portion at the tip of another rapier head.

FIG. 8 is an enlarged vertical sectional view of a guide portion at the tip of another rapier head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 One side rapier loom 2 Rapier head 2a Bottom surface 3 Rapier band 4 Weft catch part 4a Capture receiver 4b Capture piece 5 Normal thread 6 Foil thread 7 Guide part 8 Hole 8a Notch 9 Guide surface 9a, 9b Ridge part 10 Foil thread supply mechanism 11 Weft thread Selection mechanism 12 Drive means 13 Reed 14 Warp 15 Opening 16 Fixed guide 17 Movable guide 18 Adjust bolt 19 Mounting stand 20 Holding means 21 Roller

Claims (2)

[Claims] 1. A single-sided rapier loom in which weft is inserted by a rapier head having a weft catching portion for a normal yarn,
A guide portion for drawing in the foil is formed at the tip of the rapier head, and a guide surface for guiding the foil yarn is formed in a shape that allows the foil thread to pass through the guide portion. A rapier head for a drawing foil loom, wherein the rapier head is formed so as to be substantially parallel to the bottom surface and substantially perpendicular to the moving direction of the rapier head. 2. A rapier head for a drawing foil loom according to claim 1, wherein a roller is rotatably provided on the ridge portion.