Novel mold structure for preventing materials from stacking at mold opening

Abstract

The invention discloses a novel mold structure for preventing materials from stacking at a mold opening. The novel mold structure comprises a mold core and a mold sleeve, wherein the mold sleeve is fixed on a machine head by virtue of a mold sleeve cover, and the extrusion concentricity is adjusted by virtue of a mold sleeve alignment screw; the mold core is fixed on a mold core seat, and the relative position between the mold core and the mold sleeve is adjusted by virtue of a mold core seat bolt; the mold sleeve comprises a mold forming area, a mold sleeve opening chamfer, a mold sleeve tapered area, a mold sleeve step area and a mold deformation area; the mold sleeve tapered area and the mold sleeve step area are arranged on the outer side of the mold sleeve respectively; the tapered mold deformation area is arranged on the inner side of the mold sleeve; the mold sleeve tapered area is connected with the mold forming area in a circular arc transition manner by virtue of the mold sleeve opening chamfer. By virtue of the design of layering and tapering the front section of the mold sleeve, the problem of separation of the materials at the mold opening in the extrusion process in the current cable industry is well solved, the problems that the surface of a cable is poor and unqualified products and waste products are produced due to material separation are solved, the quality of products is guaranteed, the production efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to an extruding process of an extruder in the field of wire and cable manufacturing, in particular to a mold for plastic extrusion molding. Background technique [0002] The wire and cable extrusion process is a key process in the cable industry, and the mold is the key process technology in the extrusion production process. Extrusion die structure in the prior art is referring to specification attached image 3 As shown, it includes machine head 21, deflection adjustment screw 22, mold core seat 23, mold core 24, mold sleeve 25, mold sleeve outer vertical area 26, mold sleeve cover 27 and mold core seat bolt 28, wherein mold core 24, mold Cover 25 is an extrusion molding die. The mold core 24 is fixed on the mold core seat 23. Its function is to fix and support the wire core or cable core, make the plastic ring-shaped, and enter the mold sleeve in a certain direction, and adjust the mold core mold sleeve by adjusting the mol...

AI Technical Summary

Problems solved by technology

[0003] If the extruded tube production method is adopted in the production, the precipitation at the mouth of the mold sleeve will be small; but if the extrusion abrasive tool is used for production, the precipitation will be serious, and the material will precipitate and accumulate at the mold mouth for a long time during the long-term production of the mold. The wire core is extruded and adhered to the surface of the wire core, and cannot be separated, resulting in bulges on the surface of the cable, resulting in unqualified products

If the accumulation block is too large, the wire core will be stuck when passing through the wire wheel, the wire hole, and the blowing hole, which will cause the wire core to break and cause waste

It is not easy to clean the precipitated material at the mold mouth, and it is easy to damage the surface of the core during cleaning

This phenomenon is common in the cable industry, which seriously affects the quality of cables and production efficiency.

Secondly, the front part of the mold sleeve is flat, and it is impossible to extend the front part of the machine head to fix the mold sleeve nut. After the mold core and the mold sleeve are installed, it is not convenient to check the distance between the mold core and the mold sleeve, and observe the eccentricity between the mold core and the mold sleeve. Spend

[0004] In the cable industry, most of them are improved in terms of materials, but the production method of extrusion dies has not been completely resolved.

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