JPS598809Y2 - Rotating wheel continuous composite material extrusion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotating wheel type continuous composite material extrusion device suitable for continuously manufacturing a large amount of composite products in which a core wire is coated with an outer layer material such as aluminum.

In general, a rotating wheel type continuous composite material extrusion device uses a circumferentially grooved wheel and a fixed shoe block to turn a bar-shaped material into a plastic material, and then combines this material with a core wire in front of a die. The composite product is continuously extruded or shaped (see Figure 1).

Therefore, although the core wire used in the composite product is placed in the center of the die hole using strong tension, the material in its plastic state is under extremely high pressure.
If it acts directly on the core wire, it will cause the core wire to run out with respect to the die hole. Therefore, in the case of one hole in the conventional device, it is necessary to arrange a dividing fluid 15 to cover the core wire in the middle of the material passage (second, (See Fig. 3), and two wheels are used to take into consideration the direction of material convergence with respect to the core wire (see Fig. 4).

However, in the former case, where a fluid divider is placed in the middle of the passage, the flow resistance of the material increases due to the fluid divider, resulting in a decrease in extrusion speed, that is, a decrease in productivity, or the need for extra extrusion to compensate for the increased resistance. If an output is provided, there is a drawback that the device becomes larger.

In addition, in the latter case, that is, in the case of two wheels, the entire device becomes large in size, and it is difficult to control the rotation of each wheel to equalize the pressure of the fluid material, making the device extremely expensive as a whole.

As a measure to eliminate these drawbacks, as shown in FIG. 6, a centering mandrel 9 is disposed across the pressure adjustment chamber 7 formed in the fixed shoe block 3 to suppress the core runout of the core wire 10. There is something.

However, since the centering mandrel 9 is supported on a cantilever, its deflection causes eccentricity of the core material and uneven thickness of the outer layer material, resulting in a defective product, and in extreme cases, extrusion or shaping becomes impossible.

This invention was made to eliminate the above-mentioned drawbacks.
After bending the flow direction of the material that has flowed into the pressure adjustment chamber in a direction that crosses the chamber, the core material wire that has passed across the material and the pressure adjustment chamber is bent on the side of the pressure adjustment chamber. Rotating wheel type that enables efficient mass production of composite products using small equipment, without causing bending deformation due to material acting force on the centering mandrel, and without eccentricity of the core material or uneven thickness of the outer layer material. It is intended to provide a continuous composite extrusion device.

Hereinafter, the embodiment will be explained with reference to the drawings. In Figs. 5 and 7, reference numeral 1 in the drawings indicates a wheel driven and rotated by a drive device not shown, and its outer periphery has a circumferential groove 2 having a rectangular cross section.
It is equipped with

3 is a fixed shoe block equipped with a blocking member 4 that fits into the circumferential groove 2, covers a part of the circumferential groove 2, and defines an extrusion chamber 6 for extruding the metal material 5 in cooperation with the wheel 1. He is in charge.

Reference numeral 7 denotes a pressure adjustment chamber formed within the fixed shoe block 3, and communicates with the extrusion chamber 6 through a hole 8.

Reference numeral 9' denotes a centering mandrel which is supported on both sides of the pressure adjustment chamber 7, and has a core wire 10 inside.
is inserted.

A die 11 has a tapered concave surface facing the centering mandrel.

The die-side support portion 12 of the centering mandrel 9' is formed with a branch passage that communicates the pressure adjustment chamber 7 and the die 11.

Since the present invention is constructed in this way, the core wire 10 is passed from the centering mandrel 9' into the die hole in advance, and the rod-shaped When the metal material 5 is supplied, the material 5 is pulled in by frictional force, and after the leading end of the material enters the circumferential groove 2 and reaches the blocking member 4 where it is held, pressure is applied due to the subsequent material entering. The raw material 5' becomes plastic in the extrusion chamber 6.

This material 5' is then further pressurized and flows out of the extrusion chamber 6 and through the hole 8 into a pressure regulating chamber 7 formed in the fixed shoe block 3.

The material 5' that has flowed into the pressure adjustment chamber 7 surrounds and fills the outer periphery of the centering mandrel 9' disposed across the chamber 7, and then the flow direction is aligned with the direction of movement of the core material. The core wire 1 flows into the die 11 through the bent branch passage.
0 and is extruded from the hole of the die 11 together with the core wire 10 to form a composite product 14.

As described above, according to the present invention, the centering mandrel placed across the pressure adjustment chamber is supported at both ends by the fixed shoe blocks, so that no deformation occurs due to the force acting on the material.

In addition, a branch passage is formed in the die-side support part of the centering mandrel, and the material flowing into the pressure adjustment chamber flows along the direction of movement of the core material and then merges with the core material wire.
The core wire becomes a composite product without core runout.

Therefore, there is a great effect that composite products without eccentricity of the core material and uneven thickness of the outer layer material can be efficiently produced in large quantities using small equipment.

[Brief explanation of the drawing]

Figure 1.2.4 is a schematic explanatory diagram of the conventional device, and Figure 3 is the second
5 is a schematic explanatory view of the rotary wheel type continuous composite material extrusion device according to the present invention; FIG. 6 is a sectional view taken along line III;
7 is a sectional view taken along the line VI--VI of FIG. 5, FIG. 6 shows an improved example of the conventional device, and FIG. 7 shows an embodiment of the present invention. 1...wheel, 2...circumferential groove, 3...
...Fixed shoe block, 6...Extrusion chamber,
7...Pressure adjustment chamber, 9,9'...Centering mandrel, 11...Die.

Claims (1)

[Scope of utility model registration request] In a rotary continuous extrusion device consisting of one wheel with a circumferential groove and a fixed shoe block that covers the circumferential groove and cooperates with the wheel to form an extrusion chamber, the fixed shoe block is communicated with the extrusion chamber. A pressure regulating chamber is formed, a centering mandrel and a die facing the centering mandrel are arranged across the pressure regulating chamber, both ends of the centering mandrel are supported by fixed shoe blocks, and the centering mandrel is supported at both ends by fixed shoe blocks. A rotary wheel type continuous composite material extrusion device characterized by having a branch passageway to the die in the support part of the mandrel on the die side.