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Plastic extruder

A plastic extruder and extrusion die technology, applied in the field of plastic extruder equipment, can solve the problems of plastic decomposition, easily destroying molecular chains, affecting the quality of extruded plastics, etc., and achieves good plasticizing effect and high extrusion efficiency. Effect

Inactive Publication Date: 2018-03-09
SUZHOU JWELL MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extruder with this structure has a strong material conveying capacity, and a kneading and shearing section is formed between the two screws. Due to the high-speed rotation of the two screws, the shear heat of the plastic on the inside of the two screws is greater than that on the outside of the two screws. Therefore, the shear heat generated between the two screws easily destroys the molecular chains inside the plastic, causing the plastic to decompose, which in turn affects the quality of the extruded plastic.

Method used

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Embodiment Construction

[0029] In order to describe the technical content, structural features, achieved goals and effects of the invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings. Among them, the "front" and "rear" mentioned in this embodiment are respectively attached figure 1 The left and right directions shown in the figure 1 The direction extending left and right along the outer screw / inner screw / extruder barrel shown in , "circumferential" is attached figure 1 The direction around the outer circumference of the outer screw / inner screw / extrusion barrel shown in , "radial" refers to the attached figure 1 The directions extending along the radius of the cross-sectional circle of the outer screw / inner screw / extruder barrel shown in .

[0030] as attached figure 1 The shown plastic extruder 100 comprises a long cylindrical extruder barrel 1, the inside of the extruder barrel 1 is a hollow structure and forms a heating chan...

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Abstract

The invention discloses a plastic extruder. The plastic extruder comprises an extruder barrel, an extrusion mould, an inner screw, an outer screw and a driving device. In the technical scheme, the outer screw sheathes inside the extruder barrel, the inner screw sheathes inside the outer screw, the outer screw is a movable screw, and the inner screw is a fixed screw, so that plastic inside the extruder barrel and outside the outer screw can be completely molten and then enters into an extrusion material channel, and plasticizing effect of the plastic in the extruder barrel is better; and by virtue of a structure that the inner screw and the outer screw are coaxially arranged, the plastic is molten and then pushed out the extrusion material channel by virtue of the screws. Compared with theprior art, the plastic extruder disclosed by the invention has higher extrusion efficiency.

Description

technical field [0001] The invention relates to the field of plastic extruder equipment. Background technique [0002] Existing plastic extruders have single-screw, twin-screw, multi-screw, and no-screw according to their forms; [0003] The extrusion principle of the plastic extruder is: during the extrusion process of the plastic, relying on the rotational movement of the screw of the extruder, and then pushing the plastic raw material in the barrel to move to the discharge port of the barrel, after the plastic is molded When outputting, it is necessary to connect the transition device at the outlet of the barrel, and then the transition device distributes the plasticized plastic to the mold, and finally completes the molding of the plastic product. This is because the screw in the barrel rotates at high speed and cannot be directly connected to the mold. Usually, in order to improve the conveying efficiency of the screw, in addition to changing the form of the screw, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/48B29C47/60B29C48/445
CPCB29C48/445B29C48/505B29C48/59
Inventor 何海潮
Owner SUZHOU JWELL MACHINERY
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