JPH0422126B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a shuttle material suitable for manufacturing a shuttle used in a spinning machine.

(Prior Art) Conventionally, wood such as Japanese citrus tree or pine tree (Carpinus Laxiflora) has been press-molded and used with fibers attached to the upper and lower portions, or those molded with Bakelite have been used.

However, the former has a rough surface and may break the warp threads when used as a shuttle, and is hygroscopic, so it cannot be used for a long time without distortion due to moisture, and the latter is heat resistant and wear resistant. There was an inconvenience that it had to be replaced frequently because of its inferior properties.

(Problems to be Solved by the Invention) In view of the above-mentioned disadvantages, the present invention is inexpensive, has excellent heat resistance, impact resistance, water resistance, and abrasion resistance, and has a smooth surface with almost no breakage during use. A shuttle suitable for manufacturing a shuttle which has excellent tactility, has excellent properties such as no risk of warp yarns being cut when used as a shuttle, and also prevents generation of static electricity so that warp yarns and weft yarns do not get entangled. Provides a method for manufacturing materials.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention involves winding impregnated paper impregnated with phenolic resin multiple times and densely around a cuttable core rod, and then wrapping a thick layer around the outer circumference of the impregnated paper impregnated with phenolic resin. a step of winding a fiber, and then again wrapping the impregnated paper around the outer circumference of the fiber in multiple layers and tightly, and fixing the terminal end to form an impregnated paper roll; A fixed mold having a concave groove in the shape of a groove and a roll body insertion part opened in a valley shape at the upper edge of the concave groove is heated, and the impregnated paper roll body is placed in the roll body insertion part, and the impregnated paper roll body is heated. This method is characterized by the step of heating and pressing the paper roll body with a pressing die and press-fitting it into the groove, thereby forming the impregnated paper roll into a square columnar material.

(Embodiment) A more detailed explanation will be given below with reference to FIGS. 1 to 7 showing an example of an embodiment of the present invention.

First step (manufacturing process of impregnated paper) Phenol resin is applied to a long paper with a thickness of about 0.8 mm to 1 mm, which is manufactured using pulp obtained from softwood.
More specifically, the intermediate product, resol, is impregnated at room temperature for 10 hours. Then heat this to 40℃~80℃
Impregnated paper 1 is prepared by drying in a drying oven at ℃ or at room temperature for about a day.

2nd process (winding process) One end of the impregnated paper 1 manufactured in the 1st process is
As shown in the figure, a core rod 2 made of wood, which can be cut, is inserted and fixed into a vertical groove 2' which is bored and penetrated along the axial direction, leaving both ends intact.

Next, the impregnated papers 1 are wound multiple times around the outer periphery of the core rod 2 and laminated to a predetermined thickness, and the laminated impregnated papers 1 are densely stacked so that the gaps between them are minimized.
Then, continuous to the end of the impregnated paper 1, a thick fiber 3 made of a pulp material of vegetable fibers mainly made of wood, which is different from the impregnated paper 1, is applied around the outer periphery of the impregnated paper 1 more than once. The impregnated paper roll A is manufactured by winding the impregnated paper 1 so as to overwrap it, and further wrapping the impregnated paper 1 around the outer circumference in multiple layers again, and fixing the end portion with an adhesive. Therefore, as shown in the second figure, the impregnated paper roll body A is provided with winding portions X and Y of the impregnated paper 1 inside and outside the fiber 3.

Third step (forming step) The impregnated paper roll body A produced in the second step is molded. In this molding process, the fixed mold 4 shown in the third figure is
In order to form the impregnated paper roll body A into a rectangular prism-like body, the mold 4 has a concave groove portion 4 having a rectangular cross section with a constant depth h and a width narrower than the diameter of the impregnated paper roll body A.
a, and a roll body insertion part 4 that opens in a valley shape along the upper edge of the groove part 4a to form an inclined surface.
b. On the other hand, a separate pressing mold 5 is used which fits into the recess shape of the roll body insertion portion 4b. The stationary mold 4 and the press mold 5 are heated to a predetermined temperature of about 170 to 180 DEG C. by known means, such as by a heater or by passing a heat medium through them.

In forming the impregnated paper roll A, the impregnated paper roll A is placed on the roll insertion part 4b of the fixed mold 4 as shown in FIG.
The impregnated paper roll A is pressed into the groove 4a with the pressing surface 5a at ~200 kg/cm ² and heated and pressurized to shape it.

Thereafter, the impregnated paper roll body A is taken out from the stationary mold 4 and allowed to cool to obtain a shuttle material B shaped into a rectangular column shape as shown in FIG.

In the above, the formation of one impregnated paper roll body A has been described, but as in the fixing fitting 4 shown in the third figure, a large number of concave grooves 4a and roll body insertion parts 4b for forming the impregnated paper roll body A can be formed in parallel. The impregnated paper roll body A is placed in each roll body insertion part 4b, and a large number of press molds 5 are fitted into each roll body insertion part 4b.
It is efficient to form a large number of impregnated paper roll bodies A at the same time by using an integrally formed one.

The shuttle material B of the present invention manufactured as described above is formed into a shuttle C as shown in FIG. 6 by a known method.

That is, the front end 6 and the rear end 6 of the shuttle material B are cut into acute angles, and the body part thereof is cut to form a space 7. When forming this space 7, a part of the wound part X of the impregnated paper 1, which is inside the fiber 3 and includes the core rod 2 used at the beginning of winding the impregnated paper 1, is left as shown in FIG. When formed by cutting, the fibers 3 play a reinforcing role, which is preferable.

(Effects of the Invention) As is clear from the above description, according to the present invention, an impregnated paper roll body can be formed simply by winding impregnated paper impregnated with phenolic resin and filter fibers around a cuttable core rod. A shuttle for a spinning machine can be manufactured by simply heating and pressing the impregnated paper roll into the fixed mold's rectangular groove through the roll insertion part using a press mold. To provide a manufacturing method capable of easily manufacturing a suitable shuttle material and suitable for mass production.

[Brief explanation of drawings]

The illustrations show an example of the implementation of the present invention. Figure 1 is a perspective view showing the process of winding impregnated paper around a core rod. Figure 2 is a sectional view of an impregnated paper roll body, and Figure 3 is a fixed plate. Figure 4 is a perspective view of the mold, Figure 4 is a front view showing the process of forming an impregnated paper roll body, Figure 5 is a perspective view of the molded shuttle material, and Figure 6 is a shuttle manufactured using the shuttle material shown in Figure 5. FIG. 7 is a longitudinal sectional view of FIG. 6. 1... Impregnated paper, 2... Core rod, 3... Fiber, 4... Fixed mold, 4a... Concave groove, 4b...
Roll body insertion part, 5...pressing mold.

Claims (1)

[Claims] 1 Impregnated paper impregnated with phenolic resin is wound multiple times and tightly around a cuttable core rod, then a thick fiber is wound around the outer periphery of the core rod, and the impregnated paper is again wrapped multiple times and tightly around the outer periphery of the fiber. a step of winding the impregnated paper roll and fixing the end portion thereof to form an impregnated paper roll; and inserting a roll having a groove longer than the impregnated paper roll and having a rectangular cross section and opening in a valley shape at the upper edge of the groove. The impregnated paper roll body is placed in the roll body insertion part, and the impregnated paper roll body is heated and pressed with a press mold to be press-fitted into the concave groove part, and the impregnated paper roll body is heated. 1. A method for producing shuttle material for a spinning machine, comprising the steps of: forming the material into a rectangular column-shaped material.