JPH02220710A - Manufacturing device for complex wire - Google Patents

Abstract

PURPOSE:To improve the quality of a complex wire by fixing a die on an outlet passage side of a metallic core wire of a fixed shoe block and a nipple on the inlet passage side and composing the nipple of an outer nipple forming a through hole and an inner nipple set freely attachably and detachably in outer nipple. CONSTITUTION:A driving (rotary) wheel 2 is engaged with a fixed shoe block 3 and a jacket metal 5 is supplied to an extruding chamber 6. The inlet passage 7a and the outlet passage 7b for the metallic core wire 4 connecting with an extrusion room 6 are formed in the fixed shoe block 3. The die 9 is fixed on the side of the outlet passage 7b and the nipple 12 is fixed on the side of the inlet passage 7a. The nipple 12 is composed of the outer nipple 13 forming a through-hole and the inner nipple 14 set freely attachably/detachably in the through-hole and forming a through-hole for a metallic core wire 4. By this method, the manufacturing device for the complex wire can be maintained advantageously.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an apparatus for manufacturing a composite wire in which a metal core material is coated with a metal jacket.

``Prior Art'' As an example of an apparatus for producing a composite wire by covering a metal core material with a metal jacket, a friction-driven extrusion apparatus (generally called a conform apparatus) shown in FIG. 5 is used. ) eight are known.

The extrusion device A shown in FIG. 5 includes a drive wheel 2 having lVt1 on its outer peripheral surface and a fixed shoe block 3 that is engaged with a part of the outer periphery of the drive wheel 2. Inside the fixed Sony block 3, the i
An extrusion chamber 6 that communicates with An exit passage 7b is formed through the left side of the extrusion chamber 6 and communicates the extrusion chamber 6 with the outside.
Nipples 11 are fixed on the side of the artificial passageway 7a in coaxial positions and facing each other. With the above configuration, the metal core wire 4 can be introduced into the extrusion chamber 6 from the inlet passage 7a via the nipple 11, then passed through the die hole 8 of the die 9, and pulled out from the outlet passage 7b. At the same time, the outer covering metal 5 supplied to the groove l of the drive wheel 2 can be press-fitted into the extrusion chamber 6 by the rotational force of the drive wheel 2.

To manufacture a composite wire using the extrusion device A shown in FIG. is rotated to feed the jacket metal 5 into the extrusion chamber 6. Then, the outer sheath metal 5 is inserted into the metal core wire 4 from a direction perpendicular to the metal core wire 4. The die 9 in the extrusion chamber 6 approaches
, and is extruded from the die hole 8 together with the metal core wire 4.

As a result, a composite wire B in which the coating layer 10 is formed around the metal core wire 4 can be obtained.

[Problems to be Solved by the Invention] In the extrusion device A having the structure shown in FIG.
is fed into the extrusion chamber 6 at high pressure from a direction perpendicular to the metal core 4, so the metal core 4 is likely to receive uneven pressure from the outer metal 5, and this pressure causes the inner surface of the nipple 11 and the metal core to There is a problem in that the drawn metal wire 4 may come into contact with the metal wire 4 and be damaged, or in severe cases, seizure may occur and the drawn metal wire 4 may be disconnected.

In addition, in order to repair the damaged nipple 11, the fixing block 3 is disassembled, the nipple 11 is removed 17, and the nipple 11 is polished to ensure that the hole diameter is acceptable.

There is a problem where the size becomes larger than the limit and becomes unusable.

Further, the outer surface of the nipple 11 is processed into a complicated shape in order to equalize the flow rate of the outer sheath metal 5 in the extrusion chamber 6 and to make the coating thickness uniform, and the outer surface of the nipple 11 is processed into a complicated shape in order to equalize the flow rate of the outer sheath metal 5 in the extrusion chamber 6 and to make the coating thickness uniform.
Alternatively, the extrusion chamber 6 is heated to a high temperature by heating means, etc.
Due to this relationship, the material constituting the nipple 11 tends to be limited to materials such as alloy tool steel that are excellent in both workability and heat resistance. Therefore, there was a problem in that it was not possible to select a material for the nipple 11 that would not cause seizure even when it came into contact with the metal core 4.

The present invention was made to solve the above-mentioned problems, and it is possible to select a material that does not cause seizure as the constituent material of the nipple, making it possible to easily replace the nipple, and to continuously manufacture high-quality composite wire for a long time. The purpose is to provide manufacturing equipment that can.

"Means for Solving the Problems" In order to solve the above-mentioned problems, the present invention provides a fixed shiko block provided with an extrusion chamber inside, and a fixed shiko block that is engaged with the fixed shiko block to supply sheath metal to the extrusion chamber. and a drive wheel, the stationary shiko block having an artificial passageway and an outlet passageway for the metal core wire leading to the extrusion chamber,
A die is fixed to the exit passage side of the extrusion chamber, and a nipple is fixed to the entrance passage side of the extrusion chamber, and the nipples are removably attached to an external nipple forming a shell through hole and the through hole. , and an internal nipple in which an insertion hole for the metal core wire is formed. In addition,
The internal nipple is preferably made of cemented carbide, which has excellent heat resistance and wear resistance.

``Function'' Since the internal nipple, in which the insertion hole is formed through the metal core material, is separate from the external nipple, the range of materials that can be used to form the internal nipple is expanded. For this reason, if the internal nipple is made of a cemented carbide with excellent heat resistance and wear resistance, even if the metal core material is suppressed by the pressure of the outer sheath metal in the extrusion chamber, Seizure of the metal core material to the internal nipple and damage to the internal nipple are prevented. Furthermore, if the internal nipple is damaged due to contact with the metal core material, the external nipple can be reused by replacing only the internal nipple.

Embodiment FIG. 1 shows a manufacturing apparatus according to an embodiment of the present invention. The manufacturing apparatus of this example has a configuration in which the nipple 11 of the manufacturing apparatus A shown in FIG. The configuration of other parts is the same as that of manufacturing apparatus A shown in FIG.

The nipple l2 used in the manufacturing equipment of this example is:
It is composed of a hollow external nipple 13, an internal nipple 14 inserted into the external nipple 13, and a retaining member 15.

The external shape of the external nipple 13 is the same as the nipple 11 used in the conventional manufacturing apparatus A. Further, this external nipple 13 is formed in a hollow shape with a stepped through hole 17 that communicates with the extrusion chamber 6 side and the entrance passage 7a side. Further, as the material constituting the external nipple 13, an alloy tool steel or the like having excellent workability and heat resistance equivalent to the material constituting the conventional nipple II is used. and,
As shown in FIGS. 1 and 2, the internal nipple 14 includes an insertion portion 18 having a size that closes the opening on the extrusion chamber 6 side in the through hole 17 of the external nipple 13, and an inlet passage 7a in the through hole 17. Flange-shaped protrusion 2 large enough to be inserted into the side
0, and an insertion hole 21 is formed so that the metal core wire 4 can be inserted through the insertion portion 18 and the protrusion portion 20. The internal nipple 14 is made of cemented carbide, powdered high speed steel, or the like, which has excellent heat resistance and wear resistance. Further, the retaining member 15 is an annular member that is fitted into the fixing hole 17 of the external nipple 13, and its constituent material is the same as the material that forms the external nipple 13.

Note that a locking portion (not shown) is formed in the extrusion chamber 6 of the fixed shoe block 3 to prevent the external nipple 13 from moving in the direction of movement of the metal core 4. Further, the internal nipple 14 is fixed in the extrusion chamber 6 with the protruding portion 20 being sandwiched between the stepped portion of the through hole 17 and the retaining member 15 .

A case will be described below in which a composite wire B is manufactured using a manufacturing apparatus that incorporates the nipple 12 having the above configuration.

To manufacture the composite wire B, the inlet passage 7a and the nipple 11
The metal wire drawing 4 is introduced into the extrusion chamber 6 through the extrusion chamber 6, and then the metal core wire 4 is moved through the extrusion chamber 6, the die 8, and the outlet passage 7b, and the driving wheel 2 is rotated to draw the outer sheath metal 5.
is fed into the extrusion chamber 6.

As a result, the jacket metal 5 is press-fitted into the extrusion chamber 6 from a direction perpendicular to the metal core wire 4, reaches the die 9 together with the metal core wire 4, and is extruded from the die hole 8 together with the metal core wire 4. As a result, the metal core wire 4 is coated with JilO.
It is possible to obtain a composite line B that forms . Note that since the internal nipple 14 is fixed inside the through hole 17,
When the internal nipple 14 is pushed toward the extrusion chamber 6 due to the movement of the metal core wire 4, or when the internal nipple 14 is pushed toward the artificial passageway 7a due to the pressure of the sheath metal 5 in the extrusion chamber 6. The internal nipple 14 never moves.

When the composite wire B is manufactured continuously by continuously extruding the metal core wire 4 and the sheath metal 5 according to the above procedure, the metal core material 4 passes through the insertion hole 21 of the internal nipple 14, but the internal nipple 14 Since it is made of cemented carbide or powdered high speed steel with excellent heat resistance and wear resistance, wear of the internal nipple 14 or seizure of the metal core wire 4 to the internal nipple 14 does not occur. Therefore nipple 1
The life of the nipple 2 is longer than that of the conventional nipple 11, which is advantageous for continuous production of the composite wire B. In addition, if the internal nipple 14 is seized or damaged for some reason, disassemble the fixed shoe block 3, remove the nipple 12 from the extrusion chamber 6, and remove the retaining member from the external nipple 13. 15 and internal nipple 14, replace it with a new internal nipple, and replace nipple 12.
By setting the wire to the fixed shoe block 3 again, the composite wire B can be manufactured again. In this case, there is no need to replace the external nipple 13 and the retaining member 15, and only the internal nipple 14 needs to be replaced, which is advantageous in terms of replacement cost.

In addition, in the structure of this example, the outer surface of the external nipple 13 needs to be processed into a complicated shape in order to equalize the flow of the jacket metal 5 in the extrusion chamber 6.
3 is made of alloy tool steel with good workability, the internal nipple 14 can be made of cemented carbide with excellent heat resistance and wear resistance. Therefore, if the external nipple 13 and the internal nipple 14 are made separate, there is an advantage that suitable materials can be used for each of the external nipple 13 and internal nipple 14 according to the performance required for each. Furthermore, in this example, since the internal nipple 14 is a simple cylindrical body with a protrusion 20, it is possible to use cemented carbide or powdered high speed steel, which has inferior workability compared to conventionally used alloy tool steel. Also internal nipples! 4 can be easily formed.

FIG. 3 shows a second example of an internal nipple incorporated into a composite wire manufacturing apparatus, and the internal nipple 22 in this example consists of an insertion portion 23 and a truncated conical protrusion 24. When using the internal nipple 22 of this example, the external nipple 1 should be adjusted to match the external shape of the internal nipple 22.
What is necessary is to form the shape of the through hole of No. 3 in advance.

The internal nipple 22 in this example is the internal nipple 14 in the previous example.
It can be used in the same way as .

FIG. 4 shows a third example of an internal nipple incorporated into a composite wire manufacturing apparatus, and the internal nipple 25 of this example is formed in the shape of a truncated cone. Internal nipple 2 of this structure
5, the same effect as the above example can be obtained by forming the through hole of the external nipple into a shape that matches the external shape of the internal nipple 25.

Note that the external nipple and internal nipple used in the device of this invention may have any shape as long as the internal nipple can be inserted into the through hole of the external nipple and fixed without being pulled out, so the shape of the through hole of the external nipple and the internal nipple may be The external shape is not limited to that shown in the drawing, but other shapes may be adopted.
Furthermore, if the internal nipple is made large enough to reach the inner wall of the extrusion chamber 6, the extraction member 15 may be omitted and the nipple may be constituted by an external nipple and an internal nipple.

"Effects of the Invention" As explained above, according to the present invention, the internal nipple through which the metal core material passes is formed separately from the external nipple, and the internal nipple can be formed of a different type of forming material from the external nipple. Therefore, the internal nipple can be formed from a material such as cemented carbide that has excellent heat resistance and wear resistance, and it is possible to prevent seizure of the metal core material or damage to the internal nipple. Therefore, it is advantageous for continuous production of composite wires, and the quality of the obtained composite wires is also improved.

In addition, the internal nipple is detachable from the external nipple, so if a problem occurs for some reason and the metal core wire or internal nipple gets burned or the internal nipple is damaged, you can replace the external nipple by replacing only the internal nipple. It is advantageous in terms of replacement costs because it can be reused and production can be resumed, and it also has advantages in terms of maintenance.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is a side view of an internal nipple, FIG. 3 is a side view showing a second example of the internal nipple, and FIG. 4 is a third example of the internal nipple. FIG. 5 is a sectional view showing an example of a conventional extrusion device. lO...Covering layer, 12...Nipple, 13...
・External nipple, '14.22...Internal nipple, 1
5... Pulling member, 21... Insertion hole.

Claims (1)

[Claims] A fixed shoe block is provided with an extrusion chamber therein, and a drive wheel is engaged with the fixed shoe block to supply the outer metal to the extrusion chamber, and the fixed shoe block is connected to the extrusion chamber. an external nipple in which an inlet passage and an outlet passage are formed for the metal core wire, a die is fixed to the outlet passage side of the extrusion chamber, a nipple is fixed to the inlet passage side of the extrusion chamber, and the nipple forms a through hole;
An apparatus for manufacturing a composite wire, comprising: an internal nipple that is detachably attached to the through hole and has an insertion hole for the metal core wire.