JPS6078717A - Die for pipe in which wire substance is laid - Google Patents

Abstract

PURPOSE:To obtain a die useful for laying a wire material in a pipe in the lengthwise direction with a good precision simultaneously for molding the pipe by equipping on an internal or external wall body a wire inlet port that is penetrated in the axial direction and whose end is opened to a ringed passage. CONSTITUTION:In the die for a pipe in an extrusion molding machine, the wire inlet port 10 is provided so that it penetrates the external edge part of an internal wall body in the axial direction and consists of the inlet part 16 in the rear of the internal wall body, the outlet part 18 in the front flange part 15 and the projection part 20 inserted fixedly into the end of the outlet part 18. The wire material inlet port becomes sequentially and in steps smaller in diameter through the taper part in each communicator part of the inlet part 16, the outlet part 18, the projection part 20. By this die, pipe molding and laying of wire material in the pipe can be conducted simultaneously and continuously and the pipe laid in the lengthwise direction with good positional precision can be obtained with good productive efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Technical Field An uninvented problem relates to a die for a wire-embedded pipe for simultaneously molding a vibrator in which a wire is embedded in the longitudinal direction by an extrusion method.

11 Background Art Hitherto, there has been no known pipe die for simultaneously molding a pipe (Fig. 1) in which one or more wire rods are embedded in the longitudinal direction (Fig. 1) using an extrusion method.

This new problem, which has not yet been invented, has been overcome.

Disclosure of the i11 Invention In a pipe die for an extrusion molding machine in which a wall-forming body is disposed, an axial The present invention provides a die for simultaneously forming a pipe in which wire rods are embedded in the longitudinal direction, and has two or more wire rod introduction holes whose shell-through ends enter the passages.

The present invention will be explained based on the drawings.

FIG. 2 shows an embodiment in which two wire introduction holes 1O are provided in the inner wall forming body 8 so as to be diametrically opposed to each other.

In this structure, an outer wall forming body 2 is arranged so as to enclose an inner wall forming body 8 having two wire rod introduction holes 1O at its outer edge through a gap that serves as a ring-shaped passage 22 for material in a fluid state. It's getting better.

The outer wall forming body 2TI'+L has a rear part 4 having a tapered cavity in the extrusion direction, and a cavity that changes from a tapered part with a stronger slope to a uniform diameter part continuous with the rear cavity at one end. It consists of a fixed body with the front part 6. Inner wall forming body 8
It also consists of a fixed body of a rear part 12 and a front part 14 corresponding to the outer wall forming body, and the rear end of the front part becomes a seven-like part 15 having a tapered outer periphery. Note that the inner wall forming body is formed so that its outer diameter is smaller than the corresponding portion of the outer wall forming body. The wire introduction hole 10 is formed to axially penetrate the outer edge of the inner wall forming body, and is connected to the introducing part 16 at the rear part of the inner wall forming body, the leading part 18 at the front flange part 15, and the leading part 18 at the front flange part 15. A protrusion 20 is pressed and fixed at the tip. In addition, the wire introduction hole is
Through the tapered portions in the communication parts of the introduction part 16, the four-output part 18, and the protrusion part 20, the diameter is gradually decreased in stages, so that the wire can be easily introduced and the wire can be easily removed when being led out. I've learned not to shake. The tip of the protruding portion opens at the center in the thickness direction of the ring-shaped passage 22 corresponding to the uniform diameter portion of the cavity of the front portion 6 of the outer wall forming body. Note that the air supply hole is shaped like the center hole of the 2ut inner wall housing.

FIG. 3 shows another embodiment. This is a wire rod introduction hole 10 provided in the outer wall forming body 2, and when the inner wall forming body is rotated to bury the wire in the longitudinal direction and in a spiral shape, the axial rotation of the inner wall forming body is controlled. It has the advantage of being easy to implement.

In the above-mentioned embodiment No. 2, two wire introduction holes are provided, but in the present invention, the number of wire introduction holes Ir and C may be 11, or three, four or more may be provided.

Wire rod embedding/<・Eve molding using an unexploited J die is performed by extruding extrudable fluid T-island material, such as Funkrete milk or molten resin, from an extruder and inserting it into the passageway of the die. This can be done by feeding the wire into the wire introduction hole and passing the wire through the wire introduction hole. The wire to be removed may be, for example, a reinforcing wire made of metal wire or synthetic fiber to reduce the coefficient of linear expansion of the wire or increase the strength, or an electrical wire made of carbon fiber or copper wire, etc. It may be a conductive wire for heat or the like, or it may be a tube-shaped wire for the purpose of heat insulation or ventilation. Wires with anchoring properties, such as uneven wires, are particularly advantageous as reinforcing wires.

On the other hand, the uninvented die may be one whose ultimate purpose is to obtain a thick-walled pipe or tube in which a wire is embedded, or a thin-walled die whose ultimate purpose is to produce a sheet or film. It may also be for obtaining a wire-embedded vibe (tube).

1v Advantages of the invention According to the uninvented die, it is possible to simultaneously and continuously perform the molding of the vibrator and the embedding of the wire rod in the vibrator, and it is possible to create a vibrator in which the wire rod is buried with high positional accuracy in the longitudinal direction. It can be obtained with high production efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective sectional view showing an example of a wire-embedding vibe, FIG. 2 is a longitudinal sectional view showing an embodiment of the die of the present invention, and FIG. 3 is a longitudinal sectional view showing another embodiment. be. 2: Outer wall forming body, 8: Inner wall forming body, 10: Wire introduction hole,
22: Ring-shaped passage patent applicant Dainichissue Electric Cable Co., Ltd. Agent Tsutomu Fujiki Figure 1 Figure 2 Figure 3 Section

Claims (1)

[Claims] l In an extrusion molding machine in which an outer wall forming body is disposed so as to enclose the inner wall forming body through a gap that serves as a ring-shaped passage for material in a fluid state, in an X-pipe die, the inner wall forming body or the outer wall forming body is A die for simultaneously molding a vibrator in which a wire is embedded in the longitudinal direction, the die having at least one wire introduction hole that penetrates the formed body in the axial direction and has a tip opening into the passage.