JPS6254897B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foil yarn cutting device in a foil yarn separating device that makes it easy to pick each foil yarn without misunderstanding the order of the foil yarns when weaving the foil yarns used as weft yarns. .

More specifically, this invention was published in Japanese Patent Publication No. 59-39534.
As in the foil yarn separating device described in Japanese Patent Application No. 109087/1987, a feeding mechanism is used to feed parallel pieces of foil yarn with one edge paper attached in a horizontal direction at a constant speed in a flat state. Then, the foil thread is cut by a foil thread cutting device.
The foil threads are cut and separated one by one according to their order at the edge of the selvedge paper in the parallel foil thread pieces, and the foil threads are separated by a feeding device using a holding roller whose peripheral speed is higher than the feeding speed of the parallel foil thread pieces. The present invention relates to a foil thread cutting device in a foil thread separating device which sequentially clamps foil threads and sends them out while increasing the distance between the foil threads.

The foil thread cutting device in the foil thread separation device has circular rotary blades on the top and bottom at positions where the edges of the foil thread parallel pieces pass, and a part of the periphery of each of the circular rotary blades in the axial direction. According to the cutting device, when the foil thread parallel pieces are fed into the cutting part and cut, the tangential direction of each circular rotary blade to the foil thread parallel pieces is Since it is cut at an angle, the angle of the cutting edge intersecting the parallel pieces of foil yarn is large, which poses a problem in the cutting effect.

In addition, because the foil yarn parallel pieces are made of paper or plastic film, and because they are extremely long compared to their thickness and width, they are difficult to control depending on the climate (temperature and humidity).
It has a tendency to bend or twist in the length direction due to handling. Therefore, when attempting to cut and separate the foil threads using the cutting device, if the foil threads are deformed such as bending or twisting, the foil threads may rotate in a circular pattern outside the cutting section when the foil thread parallel pieces are fed into the cutting section. There was a problem that the blade could not be smoothly fed into the cutting part because it hit the periphery of the blade.

The present invention provides a foil thread cutting device that can cut the foil thread reliably and without any trouble even if the foil thread is deformed such as bending or twisting.

Next, this invention will be explained based on the drawings.

As shown in Fig. 1, a cutting edge is formed on the periphery, a disc-shaped rotary blade 3 rotates in a fixed direction as shown by an arrow, an inclined edge 1 that slopes upward is formed at the tip, and a straight line is formed on the lower edge. There is a fixed blade 2 that forms a shaped cutting edge, and these blades 3 and 2 are used to cut the foil yarn parallel piece A into which the rotary blade 3 is fed, and the edge paper 13 side of the foil yarn parallel piece A into which the fixed blade 2 is fed. They are arranged in a left-right positional relationship on the foil thread 5 side of piece A.

Then, a fixed blade 2 is superimposed on a part of the peripheral edge of the rotary blade 3, with the tip of the fixed blade 2 directed toward the parallel foil yarn piece A being sent, thereby forming a cutting part 4.
Further, a soft circular brush-like rotor 8 having an outer diameter larger than the outer diameter of the rotary blade 3 is provided at a position directly below the fixed blade 2 on the rotation shaft 14 of the rotary blade 3 .

The rotary blade 3 and the brush-like rotor 8 rotate at a rotational speed whose peripheral speed is higher than the feeding speed of the foil yarn parallel piece A, and specifically, the cut foil yarn 7 is transferred from the uncut foil yarn. It rotates at the rotational speed necessary to separate the parts at the appropriate intervals. In the figure, reference numeral 9 denotes a portion of the fixed blade 2 between the inclined edge 1 and the lower edge portion forming the cutting portion 4, and is referred to as a thread stabilizing portion.

The one shown in Fig. 3 is the relationship between the disc-shaped rotary blade 3, which has serrated cutting edges on its periphery, and the fixed blade 2, and the one shown in Fig. 4 has cutting edges formed on the periphery of an octagonal plate. It shows the relationship between the disc-shaped rotary blade 3 and the fixed blade 2.

The feeding mechanism in the foil yarn separating device feeds the foil yarn parallel piece A in a flat state at a constant feeding speed in the lateral direction, and the foil yarn parallel piece A is cut by the cutting device of the present invention.
When cutting the edge paper 13 with the cutting section 4,
Even if the foil thread 5 in the foil thread parallel piece A is deformed such as bending or twisting and the vertical position of the foil thread 5 with respect to the cutting part 4 is shifted, the foil thread 5 will not slide against the inclined edge 1 at the tip of the fixed blade 2. The tip of the brush-like rotor 8 rubs against the foil thread 5 and is pressed against the thread stabilizing part 9, and is fed into the cutting part 4.

Therefore, the foil yarn parallel piece A is smoothly fed into the cutting section 4 because the vertical position of the foil yarn 5 is corrected before reaching the cutting section 4 and maintained at a constant position in contact with the yarn stabilizing section 9. In addition, the cutting portion 4 is accurately reached. In this way, when the foil yarn parallel piece A is fed into the cutting section 4 and the foil yarn 5 is cut, the fixed blade 2 has a linear cutting edge formed thereon, and the disc-shaped rotating blade has a cutting edge formed on its periphery. Since the blade 3 is used, the angle of the cutting blade that intersects with the foil yarn parallel piece A is smaller than that in the case where the partner is a circular rotary blade in the past, and therefore the cutting effect is good.

As described above, according to the present invention, the cutting effect is better than in the case where the conventional partner is a circular rotary blade, so the foil thread can be cut more reliably, and the foil thread is free from bends, twists, etc. Even if the foil yarn is deformed, the vertical position of the foil yarn can be maintained constant and the foil yarn can be fed into the cutting section, so that the foil yarn can be cut smoothly and accurately in the order of the foil yarn.

[Brief explanation of the drawing]

FIG. 1 is a side view, FIG. 2 is a plan view of the foil yarn parallel piece, and FIGS. 3 and 4 are side views of other embodiments with the brush-like rotor removed. DESCRIPTION OF SYMBOLS 1... Inclined edge of fixed blade 2, 2... Fixed blade, 3... Disc-shaped rotating blade, 4... Cutting part, 8... Brush-shaped rotor, A...
Foil thread parallel pieces, 5...Foil thread, 13...Slip paper.

Claims (1)

[Claims] 1 A disc-shaped rotating blade with a cutting edge formed on the periphery is used to form an upwardly sloping slanted edge on the edge paper side of the parallel piece of foil thread, and a linear cutting edge on the lower edge. The fixed blade is arranged in a left-right positional relationship on the foil yarn side of the parallel piece of foil yarn being sent, and the tip of the fixed blade is placed on a part of the periphery of the disc-shaped rotary blade. At the same time, a circular brush-like rotor having an outer diameter larger than the outer diameter of the disc-shaped rotary blade is placed directly under the fixed blade. A foil thread cutting device in a foil thread separating device, characterized in that it is provided concentrically with a plate-shaped rotary blade.