Four-channel tapered die forming vertical continuous extrusion cladding method and equipment

Abstract

The invention relates to the field of continuous extrusion cladding. The invention relates to a multichannel tapered die forming continuous extrusion cladding method which is realized in a way that: when four or six blanks are fed simultaneously, the blanks are driven in by extrusion rollers and evenly sent to a die cavity on the same circumference, and then are cladded on the core wire surface after passing through the tapered die cavity. The invention adopts the four-channel tapered die forming method, thereby ensuring the flowing uniformity of interior materials in the tool set and realizing the production of large-diameter tubing and large-diameter cladding. The invention uses the tapered die structure to form, so that the materials can be cladded on the core wire surface tightly and firmly without adding a drawing process. The production of tubing and sheath wires adopts the same equipment and the same tool set, and therefore, the equipment can be used for multiple purposes.

Description

Technical field: [0001] The invention belongs to the field of nonferrous metal processing and cable manufacturing, and relates to a method and equipment for continuous extrusion and continuous coating. Background technique: [0002] Existing continuous extrusion sheathing equipment for non-ferrous metal processing and cable manufacturing such as figure 1 As shown, generally one or two blanks 2 are used, driven by one extrusion wheel 1 . When working, first pass the core wire 4 through the mold cavity 7, and then send the blank 2 between the pressing wheel 3 and the extrusion wheel 1, and the friction force generated by the rotation of the extrusion wheel 1 brings the blank 2 into the pressing wheel 3 and the extrusion wheel 1. Between the extrusion wheels 1, the pressing wheel 3 exerts a great pressure on the blank 2 while rotating with the blank 2, so that the blank 2 is deformed and attached to the extrusion wheel 1 more firmly. When the blank 2 meets the stopper After t...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the blank is fed from one side of the mold cavity, the flow path is asymmetrical, resulting in uneven flow velocity, and it is difficult to control the roundness and wall thickness of the sheath tube, and it is impossible to coat the sheath with a large size (diameter greater than 70mm)

[0006] 2. Since the punch 5 must be hollow in order to pass through the core wire 4, limited by the strength of the mold, the punch 5 must have sufficient wall thickness to ensure strength, but at the same time, the extruded sheath tube and core The gap 9 of the line 4 is too large, and a reduction process must be added to achieve the required looseness.

Excessive diameter reduction will cause the sheath to harden, thus losing flexibility and poor performance of the final product

[0008] 3. The overall equipment is a horizontal structure, covering a large area

For larger equipment, the center line of the product is high, resulting in inconvenient operation

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