Extruding equipment

Abstract

The invention relates to extruding equipment. Two extruding wheels with parallel rotating shafts are arranged on a frame of the extruding equipment, wherein the extruding wheels rotate in opposite directions. At least one strip of circumference-direction extruding wheel groove is arranged on each wheel rim. A corresponding guiding seat is arranged on each extruding wheel groove, wherein each guiding seat and the corresponding extruding wheel groove form an extruding chamber for delivering blank materials. A die holder is arranged between the extruding wheels. A channel is provided inside the die holder for delivering cables. Symmetry holes which communicate with the extruding chamber are arranged on the two sides of the core axis of the die holder in a radial direction. A cladding chamber of the die holder communicates with the holes, wherein the outlet of the cladding chamber is covered on the peripheral of the cable outlet of the channel. Blank materials enter the extruding chamber, and then enter the cladding chamber through the holes on the die holder. Because the holes are arranged symmetrically in a radial direction of the die holder, blank materials enter the cladding chamber simultaneously from both the upper part and the lower part of the die holder, such that the blank material paths are shortened, the temperature difference is reduced, the blank materials passing the die holder are sufficient, and the yield is improved.

Description

[0001] The present invention is a divisional application of an invention patent with an application date of July 8, 2009, an application number of 200910144064.8, and an invention title of "extrusion machine". technical field [0002] The present invention relates to an extrusion equipment, in particular to an extrusion equipment for forming metal by continuous extrusion. Background technique [0003] At present, due to the large diameter of the metal outer sheath of the ultra-high voltage cable, it is generally formed by welding a metal strip, that is, seam welding. The material grains at the welding place of this welding method are coarse and uneven, which affects the electrical and electrical properties of the cable. mechanical physical properties. The continuous aluminum press machine produced with aluminum ingots is huge in equipment, high in energy consumption, complex in structure, and expensive in cost. However, traditional continuous extrusion equipment has a struct...

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Problems solved by technology

[0003] At present, due to the large diameter of the metal outer sheath of the ultra-high voltage cable, it is generally formed by welding a metal strip, that is, seam welding. The material grains at the welding place of this welding method are coarse and uneven, which affects the electrical and electrical properties of the cable. mechanical physical properties

The continuous aluminum press machine produced with aluminum ingots is huge in equipment, high in energy consumption, complex in structure, and expensive in cost. However, traditional continuous extrusion equipment has a structure of single wheel and single groove or single wheel and double groove. This structure is relatively simple. Since this kind of equipment has only one runner, and its extrusion chamber has only one hole communicating with it, the flow path of the billet in the extrusion chamber is long, resulting in a large temperature difference between the upper and lower sides, and the product qualification rate is low. This single wheel, single groove or single wheel The double-slot structure usually can only produce products with small diameter and small cross-section. It is very difficult to produce products with large diameter and the yield is low.

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