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Extrusion device of plastic extruder

A technology for plastic extruders and sleeves, applied in the field of extruding devices, can solve problems such as easy carbonization, residual material residue, and affecting product quality, and achieve the effects of improving product quality and reducing production costs

Inactive Publication Date: 2015-05-27
LIUZHOU HAIDA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a material extruding device for a plastic extruder to solve the problem that in the existing plastic extruder, there is residual material on the inner wall of the sleeve, which is easy to carbonize and produce impurities, which affects the product quality.

Method used

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  • Extrusion device of plastic extruder

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Experimental program
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Effect test

Embodiment 1

[0010] Such as figure 1 The extruding device of the plastic extruder shown includes a cylinder body 1 embedded with a sleeve, and two screw rods 3 that are intermeshed and connected with a driving device are installed in the sleeve, and the sleeve has two side walls. The arc-shaped tubes 2 are intersecting and connected, and the two arc-shaped tubes 2 are connected as a whole. The sleeve sleeve of this embodiment is made of cast steel. The gap s is 0.2 mm.

Embodiment 2

[0012] The gap s between the inner wall of the arc-shaped cylinder 2 and the generatrices of the outer circles of the two screws 3 is 0.25 mm; other features are the same as those in Embodiment 1.

[0013] Since the gap s between the inner wall of the arc-shaped barrel 2 and the outer circular generatrix of the two screws 3 is 0.2 mm to 0.25 mm, the two intermeshing screws can smoothly extrude the material forward during work, and can reduce the residue in the barrel. The remaining material on the inner wall of the sleeve can be used to improve the product quality of the modified plastic.

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Abstract

The invention discloses an extrusion device of a plastic extruder and relates to the technical field of manufacturing of the plastic extruder. The extrusion device comprises a barrel body which is internally provided with a barrel sleeve, and two screw rods which are arranged in the barrel sleeve and are mutually engaged, wherein the barrel sleeve is provided with two arc-shaped barrels with connected side walls; the two arc-shaped barrels are connected to form a whole body; and the gap between the inner walls of the arc-shaped barrels and the outer circle generatrixes of the two screw rods is 0.2mm-0.25mm. Compared with the prior art, the machining position precision and size precision of inner cavities of the arc-shaped barrels can be controlled better so that the mounting gap between the inner walls of the arc-shaped barrels and the two screw rods is ensured, furthermore, materials can be forwards extruded very well by using the two mutually-engaged screw rods; and the residual material remained on the inner wall of the barrel sleeve also can be reduced so that the product quality of produced modified plastic is improved.

Description

technical field [0001] The invention relates to the technical field of plastic extruder manufacturing, in particular to a material extruding device for a twin-screw plastic extruder. Background technique [0002] The extrusion device of the twin-screw plastic extruder is one of the important parts of the twin-screw plastic extruder. Its working principle is to fully mix various plastic raw materials and evenly input them to the heating unit of the extrusion device of the plastic extruder. Melting, the melted raw material passes through the die head of the plastic extruder to form the molten modified plastic into strips, which are cut into pellets by subsequent equipment. There is an extruding device for a plastic extruder. The extruding device for a plastic extruder includes a cylinder body provided with a sleeve and two intermeshing screw rods arranged in the sleeve. The sleeve consists of two It is composed of two arc-shaped cylinders with side walls intersecting and embe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40
CPCB29C48/682B29C48/402
Inventor 黄观李海航
Owner LIUZHOU HAIDA NEW MATERIAL TECH
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