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Extruding screw for extrusion moulding machine

A technology of extrusion molding machine and extrusion screw, which is applied in the field of extrusion molding machine components, can solve problems affecting product quality and output, unstable head pressure, blockage of drainage pores, etc., to ensure stable product size and improve The effect of processing quality efficiency

Inactive Publication Date: 2014-05-07
QINGDAO HUASHENG HIGH TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing conical twin-screw extruder processes wood-plastic composite materials, when the head pressure is very high (12-30MPa), the molten material will be in the gap between the inner wall of the barrel and the outer surface of the extrusion screw. Between the gaps, backflow (leakage) occurs, causing the head pressure to be unstable and blocking the drainage pores, thus affecting the quality and output of the product

Method used

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  • Extruding screw for extrusion moulding machine
  • Extruding screw for extrusion moulding machine
  • Extruding screw for extrusion moulding machine

Examples

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Embodiment Construction

[0025] figure 1 It is a schematic diagram of a plastic conical twin-screw extrusion molding machine, including a motor 1-2, a reduction gear box 1-3, a distribution gear box 1-4, a feeding device 1-5, a barrel 1-6, and an extrusion screw 1 -7. Merge core 1-9, preheating device 1-10. The motor 1-2 is installed under the reduction gearbox 1-3 and the distribution gearbox 1-4, and the motor 1-2 drives the extruding screw 1-7 through the reduction gearbox 1-3 and the distribution box 1-4; the feeding device 1 The outlet of -5 is connected to the feed port of barrel 1-6, and feeds to barrel 1-6. Extrusion screw 1-7 is installed in barrel 1-6, and extruded by extrusion screw 1-7, The material is extruded from the confluence core 1-9.

[0026] Such as figure 2 It is a schematic diagram of the extrusion screw 1-7 of the present invention. The extrusion screw 1-7 of the present embodiment is a conical twin-screw, and the extrusion screw 1-7 is contained in the barrel 1-6, and only...

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Abstract

The invention relates to an extruding screw for an extrusion moulding machine. The extruding screw is arranged in a machine barrel of the extrusion moulding machine and is characterized in that the outer surface of the screw flight of the extruding screw is provided with an anti-oil leakage groove. The anti-oil leakage groove is a stepped groove; and the front surface of each step inclines forwards. The anti-oil leakage groove can also be a multi-tooth groove; and the front surface of each anti-oil leakage tooth inclines forwards. The invention relates to the extruding screw for a wood-plastic composite extrusion moulding machine only, which can improve the processing quality and efficiency and ensure steady product size, and the extrusion screw is suitable for extrusion-moulding and processing a wood plastic composite with base materials of high-additive biomass plastic materials and for extrusion-moulding and processing a non-plastic biomass material with the base materials of PVC, PE, PP, ABS, PET and the like.

Description

technical field [0001] The present invention relates to components of an extrusion molding machine for extrusion processing, especially an extrusion screw for an extrusion molding machine. Background technique [0002] Wood-plastic composites are derived from modified plastics, but the processing requirements of wood-plastic composites are very different from plastics. However, existing wood-plastic composite material processing equipment, such as wood-plastic composite material extrusion molding machinery, basically adopts the structure of existing plastic processing machinery. Practice has proved that, as a new type of material with independent characteristics, the processing technology of wood-plastic composite materials is far more difficult than processing ordinary plastic materials, and the production equipment is becoming more and more specialized and specialized. When extrusion screw is used to extrude wood-plastic composite materials, the structure of extrusion scr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/60
Inventor 邵敬明
Owner QINGDAO HUASHENG HIGH TECH DEV
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