JPH04146243A - Device for preventing weft of trimmed selvage from falling - Google Patents

Abstract

PURPOSE:To enable to prevent the wefts of a trimmed selvage from falling by bringing the trimmed selvage into contact with a heating roller to fuse and integrate the trimmed selvage, the trimmed selvage being cut and separated from a woven fabric between a weft cutter and a trimmed selvage-winding mechanism disposed near the cloth fell of the woven fabric. CONSTITUTION:In a trimmed selvage S generated on the preparation of a woven fabric with a shuttleless loom, at least one of a weft and catch cords C is prepared of synthetic yarns, and the trimmed selvage S cut and separated from a woven fabric F with a weft cutter K at a place near the cloth fell of the woven fabric is nipped and heated between a heat roller 11 and a driven roller 12 on the way of a course to a guide roller 1 to fuse and integrate the trimmed selvage, followed by winding up the integrated trimmed selvage on a winding roller 2 through the guide roller 1.

Description

[Detailed Description of the Invention] (Industrial Application) The present invention relates to a device for preventing discarded wefts from falling off.
More specifically, the present invention relates to an improvement in the winding technique for a selvedge in which synthetic fiber yarn is used for at least one of the weft and the catch cord.

(Prior Art) In a shuttleless loom, the tip of the inserted weft is generally held by a catch cord, and then cut by a cutter between the woven fabric and the catch cord to be separated from the woven fabric.

After that, the waste ears are taken up by the take-up roller through the guide roller along with the catch cord, but because the retention force due to the small number of catch cords is insufficient, some of the waste ears fall off during this time. This shedding is particularly noticeable when at least one of the threads constituting the selvedge is a filament thread.

When the weft yarn falls off from the selvedge in this way, for example, OHC (
If it is blown away by overhead cleaners, etc. and becomes airborne, and if it adheres to the warp threads, it may cause poor shedding, or if it is woven into woven fabric, it may cause weaving scratches. This poses a huge problem in maintaining the supply of goods.

(Summary of the Invention) An object of the present invention is to eliminate the above-mentioned disadvantages caused by the weft yarn falling off from the twisted selvage.

Therefore, the gist of the present invention is to provide a roller that comes into contact with the selvage on the path of the selvage between the weft cutter and the selvage winding mechanism, and to heat this roller with a heater.

(Embodiment) Fig. 1 shows the overall structure of the device for preventing the weft from falling off the weft of the present invention, in which the weft S is cut by a cutter K near the front of the weaving and separated from the woven fabric F, and It is guided by roller 1, reaches winding roller 2, and is wound up.

The device 10 of the present invention is provided on the way from the cutting position by the cutter K to the take-up roller 2, and
A pair of rollers grips and feeds the scraps while heating them.

The filament in the waste selvage is melted by the heating by this heat roller, and when the catch cord is a filament, it is fused to the weft, and when the weft is a filament, it is fused to the catch cord, and in either case, the waste selvage is integrated. In this embodiment, since the waste selvage is held and fed by a pair of rollers, the waste selvage and the catch cord can be reliably fused together.

This heating is performed by a heater provided in association with the roller, and there are two types of heaters: fixed heaters and movable heaters.

The heater shown in FIG. 2 is of a fixed type. In the example shown in FIG. This heat roller 11 is a driven roller 12
They rotate with their circumferential surfaces pressed against each other, and the waste lug is sandwiched between them.

Of course, the roller that is not heated, the driven roller 12 in the illustrated case, may be driven by a motor. Neither the rollers nor the rollers may be particularly driven, but may be configured to be passively rotated by winding up the waste selvage.

An annular groove 14 is formed on the end surface of the heat roller 11, and a heater H connected to a power source is inserted into the annular groove 14 in a position that does not interfere with the rotation of the heat roller 11. Although the annular groove 14 is formed on both end surfaces of the heat roller 11 in the illustrated case, it may be formed only on one end surface.

The one shown in FIG. 3 is of a movable heater type. In this case, a heater (not shown in the figure) appropriately provided inside the heat roller 11 is electrically connected to a pair of contacts 22 provided on the end face of the enlarged portion of the drive shaft 13, and connected to a power source. The terminals 21 are brought into contact with these contacts 22 in a position that does not interfere with the rotation of the drive shaft 130.

In the above example, a two-heat roller is provided between the guide roller 1 and the cutter, but if the guide roller 1 is also used as a heat roller, there is an advantage that the existing structure can be used as is. Furthermore, since the contact angle of the discarded lug and the catch cord with respect to the guide roller 1 can be increased, welding can be reliably performed.

Furthermore, although an electric heater is used in the above example, the heat roller may have a hollow structure and hot air may be blown into the interior by a hot air heater.

It is advantageous to treat at least the surface of the heat roller with, for example, Teflon treatment to prevent molten synthetic fibers from adhering to it.

FIG. 2 is a side view showing one embodiment, and FIG. 3 is a perspective view showing another embodiment.

C...Catch code S-...Discarded selvage F-...Woven fabric H...Heater 1...Guide roller 2...Take-up roller 10
...Discarded selvage weft drop prevention device 11...Heat roller

Claims (1)

[Scope of Claims] [1] A roller that comes into contact with the waste selvage is provided on the path of the waste selvage between the weft cutter and the waste selvage winding mechanism, and the roller is heated by a heater. Features a device to prevent the weft from falling off. [2] The device according to claim 1, wherein the heater is of a fixed type. [3] The apparatus according to claim 1, wherein the heater is movable. [4] The device according to any one of claims 1 to 3, wherein the roller is a guide roller with a selvedge.