JPS6329751Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shuttle for foil yarns, and more specifically, the weft yarns released from a coreless weft bundle are passed through the slits of a slit plate to eliminate twisting of the weft yarns and prevent them from being paid out in a lump. This invention relates to a shuttle for foil yarn that prevents

When weaving foil threads of gold, silver, etc. into woven fabrics, by eliminating twisting and weaving the foil threads so that the surface of the foil threads is parallel to the surface of the cloth, a cloth with beautiful light selection can be woven. At this time, if the weft threads are twisted, the optical selectivity of the woven fabric will be lost and the quality will be impaired. In order to avoid twisting the foil yarn when pulling it out from the shuttle, the foil yarn is not wound around the woodwind, but instead is made into a coreless bundle of yarn that is wrapped around the center and wound alternately from side to side. Release the thread and pull it out. However, since the foil yarn is pulled out from a coiled coreless yarn bundle, the yarn is often tied together and pulled out in the form of a lump or knot. Such bundled or knotted foil threads will be woven into a woven fabric as it is, significantly reducing the quality of the woven fabric and resulting in a loss of commercial value.

In order to prevent this, the inventor has already applied for the
- In No. 19715, the foil thread released from the coreless bundle is passed through the needle hole of the guide needle, and if the foil thread is pulled out from the thread bundle in the form of a lump or knot, it is prevented from passing through the needle hole. By automatically cutting the foil yarn at this point, the weft cut detection device of the loom is activated, the loom is immediately stopped, and the loom is restarted after cutting off the lumped or knotted foil yarn portion. A shuttle for foil yarn is disclosed.

However, with the above-mentioned conventional foil thread shuttle, each time a new thread bundle is loaded into the shuttle or the foil thread is cut, it is necessary to insert the foil thread into the minute needle hole of the guide needle, which is very difficult. The drawback was that it was time consuming. In view of this shortcoming of the conventional shuttle for foil yarn, the inventor of the present invention has devised a new method in which the foil yarn released from the bundle is inserted into the slit of the slit plate instead of the guide needle of the conventional shuttle for foil yarn. As a result, the present invention was completed by discovering that the insertion operation of the foil thread is extremely simple and that the passage of the bundled or knotted foil thread can be completely prevented.

That is, in the present invention, a foil-like weft yarn stored in a coiled form without core is released from the storage chamber and pulled out, and is inserted through a slit in a slit plate arranged with the weft plate surface perpendicular to the yarn pulling direction. After that, it is inserted between the metal pieces, etc. of the twist correction part, which is made up of two metal pieces, etc., which are weakly pressed by a spring and pressed against each other, provided in the thread groove,
The thread is then folded back through a guide roll provided at the tip of the thread groove, enters the thread passage hole provided in the bulkhead, and then fits slidably along the sliding groove of the tension adjustment groove provided in the shaft side wall, and is always This is a shuttle for foil yarn, which is led out to the outside through a conduction hole of sliders arranged facing each other so as to be pulled toward the end of the shuttle by an elastic string, and the embodiments shown in the drawings will be described in detail below. explain.

Reference numeral 1 denotes a storage chamber for a coreless foil thread bundle 2 wound into a coiled shape, and is provided at the base end of the shuttle, and this foil thread bundle is covered with an upper lid 4 rotatably provided via a pin 3. and its ejection is prevented. Reference numeral 5 denotes a slit plate, which is disposed perpendicularly to the direction of thread ejection in the path through which the foil thread 6 pulled out from the foil thread-wound bundle 2 is drawn out, and a cut line is cut vertically from the upper end of the slit plate, and the foil thread is inserted through the slit plate. A slit 7 is provided. The slit plate 5 is made of cardboard, compressed paper, synthetic resin, or thin metal plate, has elasticity and rigidity corresponding to the strength of the foil thread, and is formed into an L-shape as shown in the enlarged perspective view of FIG. can be adhered and fixed to the bottom surface of the recess 8 of the shuttle using an adhesive or double-sided adhesive tape. Reference numeral 9 denotes a thread groove provided along the longitudinal direction at the center of the shuttle, and a guide pin 10 is installed across the thread groove at its entrance. 1
Reference numeral 1 denotes a twist correction section provided in the thread groove 9, and as shown in the cross-sectional view of FIG.
Coil springs 15, 15' are loosely fitted in the thread grooves 3 so as to be movable in a direction perpendicular to the thread grooves, and fixed by screws 14, 14' from both sides of the metal pieces 12, 12'.
By weakly pressing the metal pieces 12, 12' against each other and inserting the foil thread 6 between the two metal pieces, the twist in the foil thread is straightened. Reference numeral 16 denotes a guide roll for winding and folding the foil thread, and the slit plate 5, the twist correction section 11, and the guide roll 16 are arranged on the same straight line. Reference numerals 17 and 17' denote thread openings provided in the partition wall 18, and the foil yarn 6 wound around the guide roll 16 passes through either of the thread openings and is provided with a weft tension adjustment mechanism 34 provided on the side wall of the shuttle. It is pulled out to the tension adjustment groove 19. In the embodiment shown in the cross-sectional views of FIGS. 4 and 5, four sliding grooves 20 are provided on the top and bottom surfaces of the inner surface of the tension adjustment groove 19, respectively, and each of the four sliding grooves 20 on the upper and lower sides is arranged from the inside to the outside. Sequentially, the left inner slider 21, the right inner slider 22, the left outer slider 23, and the right outer slider 24 are slidably fitted,
Each slider has a conductive hole 25 through which the foil thread 6 is inserted.
, and the left inner and outer sliders 21 and 23 are elastic strings 2 wound around guide wheels 26 and 27, respectively.
8, 29, it is always elastically pulled to the left side,
The right inner and outer sliders 22 and 24 are always elastically drawn to the right by elastic cords 32 and 33 wound around guide wheels 30 and 31, respectively.

In the foil yarn shuttle of the present invention having the above configuration,
The foil yarn 6 released from the coiled coreless foil yarn bundle 2 is inserted through the slit 7 of the slit plate 5 to perform primary correction of twist, and is given tension by the friction of the slit 7, and is then inserted under the guide pin 10. The thread is passed through the twist correction section 11 to further correct the twist, passed through the thread groove 9, wound around the guide roll 16, turned back, passed through the thread opening 17, passed through the partition wall 18, and then passed through the tension adjustment groove 19.
is drawn out. Foil thread 6 pulled out from thread port 17
first insert through the conduction hole 25 of the left inner slider 21,
Next, the elastic cord 2 of this weft tension adjustment mechanism is inserted through the conduction holes 25 of the right inner slider 22, the left outer slider 23, and the right outer slider 24 in order and pulled out to the outside.
8, 29, 32, and 33 so that a constant tension is always applied.

In the present invention, the elasticity and rigidity of the slit plate 5 are preferably selected depending on the strength of the foil thread 6. In the case of foil yarn with low strength, a highly elastic slit plate is used, and if the foil yarn is slightly twisted, not in the form of a lump or knot, the slit opens back and forth due to the elasticity of the slit plate, allowing the foil yarn to pass through without being cut. In the case of strong foil threads, a highly rigid slit plate is used to reliably cut the foil threads in clumps. When using various foil threads, it is preferable to use double-sided adhesive tape or the like to adhere the slit plate to the shuttle so that the various slit plates can be attached and removed depending on the type of foil thread used. .

The foil yarn shuttle of the present invention has the following effects.

(1) The weft yarn to be released from the coiled coreless foil yarn-wound bundle 2 may be taken out in a twisted state, in a lump, or in a knot, and simple twists are corrected while passing through the slit 7 and the twist correction section 11. The foil thread 6, which is complicatedly twisted into a lump or a knot, is caught when passing through the slit 7, and its insertion is blocked and cut, and the loom is stopped by an automatic stop device. If the knotted foil threads are woven as they are, the quality of the woven fabric will be impaired, so the shuttle with the slit plate of the present invention prevents the knotted twisted threads from traveling and improves the quality of the woven fabric.

(2) Since the slits are made by cutting vertically from the upper end of the slit plate, when loading new foil yarn 6 into the shuttle, or after the foil yarn has been cut by the slit plate, the foil yarn can be inserted into the slit plate. When inserting the foil thread into the slit 7, there is no need to pass the foil thread through the slit from the tip, and the foil thread can be inserted easily from the end of the slit opened at the upper end of the slit plate at any position of the foil thread. Easy insertion into the machine reduces work time and improves productivity.

(3) The elasticity of the slit plate 5 can be appropriately selected depending on the type of the foil yarn 6, and the slit plate can be easily replaced with a slit plate suitable for the strength of the foil yarn.

(4) The structure of the slit plate 5 is simple and the manufacturing cost can be reduced.

[Brief description of the drawings]

Figure 1 is a plan view of the foil yarn shuttle of the present invention.
Fig. 2 is a front view of the same, Fig. 3 is a sectional view AA of the same Fig. 1, Fig. 4 is a sectional view BB of the same Fig. 2, Fig. 5 is a sectional view CC of the same Fig. 1, and Fig. 6 is a sectional view of the same Fig. 1. 1 is a cross-sectional view of DD in FIG. 1. FIG. 7 is an enlarged perspective view of a slit plate used in the foil yarn shuttle of the present invention. Explanation of symbols: 1... Foil-wound bundle storage chamber, 2... Foil-wound bundle, 3... Pin, 4... Upper lid, 5... Slit plate, 6...
foil thread, 7... slit, 8... recess, 9... thread groove, 10
...Guide pin, 11...Twisting correction section, 12, 12'...
Metal piece, 13... Support, 14, 14'... Screw, 1
5, 15'...Coil spring, 16...Guide roll, 1
7... Thread opening, 18... Partition wall, 19... Tension adjustment groove, 2
0...Sliding groove, 21...Left inner slider, 22...Right inner slider, 23...Left outer slider, 24...Right outer slider, 25...Conduction hole, 26, 27, 30, 31 ...Guide wheel, 28, 29, 32, 33...Elastic cord, 34...
Weft tension adjustment mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A coreless foil yarn bundle storage chamber is provided at the base end, and a thread groove provided from the storage chamber along the longitudinal direction of the shuttle is weakly pressed against each other by a spring. In a shuttle for foil yarn, which is provided with a twist correction section made of two metal pieces, etc., and a weft tension adjustment mechanism in a tension adjustment groove provided on the side surface of the shuttle, the foil yarn bundle storage chamber and A slit plate having a slit formed by making vertical cuts from the upper end in the weft lead-out path between the twist correction parts is arranged so that the plate surface of the slit plate is substantially perpendicular to the direction in which the foil thread is led out. A shuttle for foil yarn, characterized in that the foil yarn released from the coreless foil yarn bundle is sequentially pulled out through the slit, the twist correction section, and the weft tension adjustment mechanism. (2) The shuttle for foil yarn according to claim 1, wherein the slit plate is a plate having an L-shaped cross section. (3) The shuttle for foil yarn according to claim 1, wherein the slit plate has elasticity. (4) The shuttle for foil yarn according to claim 2, wherein the bottom surface of the L-shaped slit plate is removably fixed to the shuttle using double-sided adhesive tape.