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Bevel-expanded sealing ring type extrusion screw

A technology for extruding screw rods and sealing rings, which is applied to presses, manufacturing tools, etc., can solve the problems of high material and processing precision requirements, elastic decline, etc., meet the requirements of reducing material and processing precision, improve service life, reduce The effect of production costs

Inactive Publication Date: 2015-03-25
ANHUI NEOFOUND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the spiral ring used expands outwards by its own elastic force, it requires high material and processing precision, and the elasticity decreases after a long time of use.

Method used

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  • Bevel-expanded sealing ring type extrusion screw
  • Bevel-expanded sealing ring type extrusion screw
  • Bevel-expanded sealing ring type extrusion screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] combine picture The preferred implementation method of the extruding screw of a kind of inclined-plane expansion sealing ring mentioned in the content of the present invention is described.

[0020] The thread 2 thickness of the screw 1 is set to be consistent, and the groove 3 is processed in the center of the outer ring of the thread 2. The width of the groove 3 is 1 / 3~1 / 2 of the thickness of the outer ring of the thread 2. The groove is set to be trapezoidal, and the depth is the largest 0.2 to 1 times the width, the angle of the trapezoid is 45°, and the shape of the groove 3 is the same as that of the thread, which is helical.

[0021] Make a spiral ring with a trapezoidal cross section Such as figure 2 As shown, its diameter, distance, cross-section and other dimensions are the same as figure 1 The middle screw and the groove match.

[0022] Install the spiral ring on the groove, Such as image 3 shown, and ensure that the helical ring matches the slo...

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PUM

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Abstract

The invention provides a bevel-expanded sealing ring type extrusion screw. According to the technical scheme, the bevel-expanded sealing ring type extrusion screw is characterized in that a sealing ring is mounted between a thread and a sleeve and is in bevel contact with a concave groove in the screw; when the screw is worn during use, the bevel of the sealing ring bears a force and the sealing ring is outwards expanded to keep seamless contact between the screw and the sleeve, so that the sealing effect is achieved, extruded materials can be prevented from leaking, the production efficiency and quality of a device can be raised, and the service life of the screw is prolonged. The bevel-expanded sealing ring type extrusion screw has low requirements on the materials and processing precision and is long in service life.

Description

Technical field: [0001] The invention relates to the technical field of extruding screws, in particular to an extruding screw adopting an inclined-plane expansion sealing ring used in injection molding machines, extruders and rubber machines. Background technique: [0002] Extrusion screws are widely used in injection molding machines, oil presses, extruders and rubber machines. The problem is that the screw threads directly contact the extrusion sleeve and cause friction. After wear and tear, the outer diameter of the screw threads becomes smaller, making the screw thread The gap between the sleeve and the sleeve is enlarged, and leakage will occur when the extruded material advances, which reduces the production efficiency. At present, a set of screws on the market can produce only a few hundred tons of plastic, and the continuous production time is only two to three months. [0003] In addition to replacing the screw, the current common solutions include repairing the sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/60B29C45/60B30B15/00
CPCB29C45/60B29C48/254B29C48/56B30B9/121
Inventor 聂刚谢峰龙海敏
Owner ANHUI NEOFOUND TECH