Extruder die head and extruder

Abstract

The invention discloses an extruder die head and an extruder. The extruder die head comprises a reversing gear in the extruding direction, the reversing gear comprises two times of 180 degree reversing. According to the extruder die head and the extruder, through the mechanism design, extruded media are reversed two times in the extruding direction, extrusion molding object damage caused by stopping of multiple edges in a machine head spreader is avoided, in particular to the object with the corresponding media as heat shrink tube class matter, the arrangement of the edges in the machine headspreader can cause close joint lines, heat shrink tubes having the close joint lines are prone to breaking during secondary machining, and similar problems are well solved through two times of reversing.

Description

technical field [0001] The invention relates to extrusion molding equipment, in particular to an extruder die head and an extruder. Background technique [0002] The extruder die is used to form the medium to be extruded into a fixed shape product. The design of the extruder die is directly related to the quality of the extruded product. Therefore, the extruder die plays a pivotal role in the entire extruder. [0003] Existing extruder dies, especially for extrusion of hollow pipes such as heat-shrinkable tubes, often use the corresponding part-a shunt shuttle because of the hollowness, but the shunt shuttle does not exist in isolation, and it often requires It is fixed at the center of the extruder die through the connecting parts. The existence of such connecting parts will inevitably affect the flow direction of the extrusion medium, resulting in uneven distribution of the subsequent medium in the direction of the connecting parts, and the extruded pipe will be formed. ...

AI Technical Summary

Problems solved by technology

[0003] Existing extruder dies, especially for extrusion of hollow pipes such as heat-shrinkable tubes, often use the corresponding part-a shunt shuttle because of the hollowness, but the shunt shuttle does not exist in isolation, and it often requires It is fixed at the center of the extruder die through the connecting parts. The existence of such connecting parts will inevitably affect the flow direction of the extrusion medium, resulting in uneven distribution of the subsequent medium in the direction of the connecting parts, and the extruded pipe will be formed. seam line

If there is a seam line in the pipe, it is easy to cause the rupture of the pipe during the secondary processing of the pipe

The existing extruder die head does not have a good solution to this problem, and the present invention is developed based on this

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