JPH0317567B2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention supplies a metal raw material into the groove of a rotating wheel, and extrudes the metal raw material to the outer periphery of the core material together with the core material passed through the shub block to form a composite wire. This invention relates to a rotary continuous metal extrusion device.

Prior Art Conventionally, a shoe block is placed close to a rotating wheel having a groove on its outer periphery, a metal raw material is supplied into a raw material supply path formed between the shoe block and the groove, and the metal raw material is fed to the outer periphery of a core material passed through the shoe block. A rotary continuous metal extrusion device for extruding and forming composite wire has been devised. In the device shown in FIG. 10, a shoe block b is brought close to the outer periphery of a rotary wheel a, and metal is passed through a raw material supply path c and passed through a die d provided in an abutment formed downstream of the shoe block b in the rotational direction, together with a core material e. This is to extrude the raw material f. Since the metal raw material f is extruded by the frictional force with the rotating wheel a, this device requires less extrusion pressure and has a simple structure, while the core material e is made of metal. Because it is directly subjected to the flow pressure of the raw material f, or due to the influence of fluctuations in the flow pressure of the metal raw material, fluctuations in the metal flow, etc., uneven thickness of the outer layer material of the composite wire may occur.

The apparatus shown in FIGS. 11 and 12 forms a raw material gathering chamber g that is continuous with the raw material supply path c, and provides a separate fluid h between the supply path c and the gathering chamber g, so that the flow pressure of the metal raw material f can be directly adjusted to the raw material. The core material e passed through the gathering chamber g is not exposed to the core material e. However, since the metal raw material f still flows in from the direction perpendicular to the core material e, uneven thickness may occur, and large extrusion pressure is required to feed the raw material f out of the groove into the gathering chamber g. Structural issues and extrusion efficiency (productivity) such as the need for high strength equipment and the use of good materials to withstand
There is a problem with this.

The apparatus shown in FIG. 13 also has a raw material collection chamber g formed outside the groove, a wall i to prevent the flow pressure of the raw material f from being directly applied to the core material e, and a protrusion covering the outer periphery of the core material e. A section j is provided. This device also has the disadvantage that a greater extrusion pressure is required to feed the raw material f into the collection chamber g.

Purpose of the Invention This invention was made to improve the above-mentioned drawbacks, and it does not cause uneven thickness in the product, does not require large pressure to extrude raw materials, has high strength in the equipment, and has high quality materials. It is an object of the present invention to provide a rotary continuous metal extrusion device that does not require the use of a rotary continuous metal extrusion device, has a simple structure, and can be manufactured at low cost.

Structure of the Invention The rotary continuous metal extrusion device according to the present invention has a protrusion protruding from the surface of the shoe block that comes into sliding contact with the outer peripheral surface of the wheel so as to reach almost the bottom of the wheel groove in the center of the wheel groove. An extrusion passage through which the metal raw material flows is formed between both sides and the inner surface of the wheel groove, and an abutment is provided protrudingly downstream of the protrusion in the rotational direction and is fitted into the wheel groove, and the core material is inserted into a core material insertion hole that is passed through the shoe block and opened in a straight line between the downstream end surface of the protrusion in the rotating direction and the opposing surface of the abutment,
The above object is achieved by forming the space in the wheel groove between the rotational downstream end of the protrusion of the shoe block and the abutment as a collection chamber for the metal raw material.

Embodiments Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

In the figure, 1 is a rotating wheel, and 2 is a shoe block. The rotating wheel 1 is a disc-shaped member, and a wheel groove (hereinafter simply referred to as a groove) 11 having a rectangular cross section is recessed in the circumferential direction of an outer peripheral surface 12 thereof.

The shoe block 2 is placed close to the rotary wheel 1, and the surface facing the rotary wheel outer circumferential surface 12 is formed as a sliding contact surface 21 curved into an arc having a radius slightly larger than the radius of the rotary wheel 1.

Further, the sliding surface 21 of the shoe block 2 has a guide step corresponding to the groove 11 of the rotary wheel 1, which has a width slightly narrower than the width of the groove 11 and whose height is lower than the depth of the groove 11. A portion 22 projects in the circumferential direction and is fitted into the groove 11 to form the extrusion passage 3. A protrusion 4 is further provided projecting on the guide step 22. The protrusion 4 is provided to protrude in the circumferential direction corresponding to the groove 11 of the rotary wheel 1, and is formed to gradually increase in height from upstream to downstream in the rotational direction of the rotary wheel 1. The protrusion 4 has a rectangular cross-sectional shape, has a width smaller than the width of the groove 11, and is protruded from the center of the groove 11. The downstream end of the protrusion 4 in the rotational direction of the rotating wheel 1 is formed so as to almost reach the bottom of the groove 11. Therefore, the extrusion passage 3 formed in the groove 11 is divided into two by the protrusion 4, and an extrusion passage for separating the metal raw material is formed between both sides of the protrusion 4 and the inner surface of the groove 11. (Figure 7).
Further, both corner portions 41 at the downstream end of the protrusion 4 in the rotational direction,
41 is notched so that the width of the end is narrower.

Further downstream of the downstream end of the protrusion 4 in the rotational direction, an abutment 5 is protruded in close proximity to the protrusion 4 . The cross-sectional shape of the abutment 5 is a groove 11.
The abutment 5 has substantially the same cross-sectional shape and size as the groove 11, and the abutment 5 is fitted into the groove 11 to block the extrusion passage 3. On both sides of the abutment 5 on the protrusion 4 side, tapered guide walls 51, 51 are formed which gradually approach the protrusion 4 side toward the side ends.

A core material insertion hole 6 is passed through the shoe block 2, and the core material insertion hole 6 is opened in a straight line between the rotational direction downstream end surface 42 of the protrusion 4 and the opposing surface 52 of the abutment 5. The diameter of the opening of the core material insertion hole 6 on the protrusion 4 side is approximately the same as the diameter of the core material 8 described later, and the diameter of the opening of the core material insertion hole 6 on the abutment 5 side is slightly larger than that of the core material 8. Largely formed.

As described above, a space is formed within the groove 11 between the downstream end of the protrusion 4 in the rotational direction and the abutment 5, and this space is used as the collection chamber 7 for the metal raw material.

Next, the manufacturing operation of composite wire using the rotary continuous metal extrusion apparatus configured as above will be explained.

The core material 8 is inserted into the core material insertion hole 6 of the shoe block 2 and moved. As the core material 8, a filament made of, for example, steel or glass can be used. The core material 8 is caused to pass through the collection chamber 7 formed in the groove 11 and continuously moved from the protrusion 4 to the abutment 5 side.

The rotary wheel 1 is rotated in the direction of the arrow to supply the metal raw material 9 that will become the outer layer material into the extrusion passage 3. As the metal raw material 9, for example, a linear material made of aluminum metal is used. First, metal raw material 9
is drawn in while being deformed by the contact friction force generated between it and the groove 11 as the rotary wheel 1 rotates. (Fig. 4) The metal raw material 9 fills the pressure chamber as it rotates,
Furthermore, it becomes a high temperature and high pressure state (thermoplastic state) and is pushed further downstream in the extrusion passage 3 while increasing the extrusion pressure. (Fig. 5) As the metal raw material 9 is pushed downstream in the rotational direction, the height of the protrusion 4 gradually increases and protrudes into the extrusion passage 3, so the metal raw material 9 is gradually pushed to both left and right sides of the groove 11. Can be divided. (Fig. 6) Since the downstream end of the protrusion 4 in the rotational direction is in contact with the bottom of the groove 11, the extrusion passage 3 is divided into left and right halves in the groove 11, so the metal raw material 9 is divided into left and right halves. After that, it flows into the gathering chamber 7 mainly from both inner side walls of the groove 11. (Fig. 7) The metal raw material 9 that has flowed into the gathering chamber 7 is pushed out from the outer periphery of the core material 8 through the opening on the abutment 5 side of the core material insertion hole 6 as the core material 8 moves. The composite wire 10 is formed by coating the wire as an outer layer material.

Since the metal raw material 9 is caused to flow into the collecting chamber 7 formed in the groove 11, there is no need to greatly change the flow direction of the metal raw material 9, and a large extrusion pressure is not required. In addition, the metal raw material 9 mainly flows into the gathering chamber 7 from both inner wall sides of the groove 11 while moving substantially parallel to the moving direction of the core material, and in order to cover the outer periphery of the core material 8, the core material 8 is constantly It is possible to support the product in position, and uneven thickness of the product does not occur. Further, the metal raw material 9 is guided by the notches in both corner portions 41, 41 of the protrusion 4 and the guide walls 51, 51 of the abutment 5, and can smoothly flow into the collection chamber 7.

Although the present invention has the above configuration, the following embodiments may be considered.

In the above embodiment, the groove 11 and the protrusion 4 have a rectangular cross-sectional shape, but various other shapes such as a U-shape can be selected as appropriate.

The shape of the protrusion 4 is the same height from upstream to downstream in the rotational direction as shown in FIG. 9, and its width is gradually increased from upstream to downstream in the rotational direction.
The extrusion passage 3 in the extrusion chamber 1 may be divided into left and right halves to allow the metal raw material 9 to flow into the gathering chamber 7 from the left and right sides.

Effects of the Invention As described above, in the rotary continuous metal extrusion device according to the present invention, the protrusion and the abutment are protruded from the shoe block into the groove of the rotary wheel to form a collecting chamber in the groove, and the metal raw material is transferred to the collecting chamber. Since the core material is extruded along with the core material through the core material insertion hole opened in the abutment, it does not require a large amount of extrusion pressure, and it can be manufactured at low cost without requiring the equipment to have high strength or use good quality materials. be. In addition, the metal raw material flows into the collection chamber mainly from both inner walls of the groove of the rotating wheel while moving approximately parallel to the moving direction of the core material, and covers the outer periphery of the core material, so that the core material is always supported in an appropriate position. This makes it possible to prevent uneven thickness from occurring in the outer layer material of the composite wire, thereby improving product quality. Further, since it is only necessary to provide a projection on the sliding surface of the shoe block and insert the core material between the projection and the abutment, the structure is extremely simple.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is a vertical sectional view, Fig. 3 is a sectional view taken along line A-A, and Fig.
The figure is a sectional view taken along the line B-B, and Figure 5 is a sectional view taken along the line C-C.
FIG. 6 is a sectional view taken along the line D-D, FIG. 7 is a sectional view taken along the line E-E, FIG. 8 is a sectional view taken along the line F-F, FIG. 9 is a perspective view of main parts of another embodiment, and FIG. 10 11 is a vertical sectional view of the conventional example, FIG. 12 is a sectional view taken along line G-G, and FIG.
The figure is a longitudinal sectional view of another conventional example. 1...Rotating wheel, 2...Shu block,
3... Extrusion passage, 4... Projection, 5... Abutment, 6... Core material insertion hole, 7... Gathering chamber, 8...
... Core material, 9 ... Metal raw material, 10 ... Composite wire, 11
……groove.

Claims (1)

[Claims] 1. A metal raw material is supplied into a groove of a rotating wheel, and a core material is continuously passed through a shoe block in contact with the outer peripheral surface of the wheel, and as the metal raw material passes through the core material, the core material is In a rotary continuous metal extrusion device that forms a composite wire by extruding it to the outer periphery, a protrusion is provided from the surface of the shoe block that comes into sliding contact with the outer circumferential surface of the wheel to the center of the wheel groove so as to reach almost the bottom of the wheel groove. An extrusion passage through which the metal raw material flows is formed between both sides of the protrusion and the inner surface of the wheel groove, and an abutment is protruded downstream from the protrusion in the rotational direction and is fitted into the wheel groove; The core material is passed through the shoe block and inserted into a core material insertion hole that is opened in a straight line between the downstream end surface of the protrusion in the rotating direction and the opposing surface of the abutment, and is inserted into the core material insertion hole which is opened in a straight line between the downstream end surface of the protrusion in the rotating direction and the opposing surface of the abutment. A rotary continuous metal extrusion device characterized in that a space between a downstream end in a rotating direction and an abutment is formed as a collection chamber for metal raw materials.