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Plastic pipe extruding opening mold

A technology for plastic pipes and extrusion ports, which is applied in the field of plastic pipe extrusion dies, can solve the problems of not being able to effectively and quickly improve the surface defects of plastic pipe extrusion, achieve stable effects, reduce difficulty and cost, and improve melt modulus.

Inactive Publication Date: 2014-03-26
CHANGYUAN ELECTRONICS DONGGUAN +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings that the existing plastic pipe extrusion dies cannot effectively and quickly improve the surface defects of plastic pipe extrusion, and to provide a new extrusion die with a polytetrafluoroethylene scraper ring, which can effectively and quickly improve Various extruded plastic pipes have poor surface, simple structure and easy operation

Method used

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  • Plastic pipe extruding opening mold
  • Plastic pipe extruding opening mold
  • Plastic pipe extruding opening mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] see Figure 1 to Figure 4 , a plastic pipe extrusion die, which includes a die body 1, a scraper ring 2, a die lock cover 3.

[0029] The die main body 1 is a rotating body, and its interior is hollow.

[0030] A compression channel 11 is dug into the rear end of the inner hollow part of the die main body 1 for the extruded molten material to pass through.

[0031] The compression channel 11 has a large diameter at the rear end and a small diameter at the front end, and the diameter gradually decreases when extending from the rear end to the front end.

[0032] The front end of the compression channel 11 is further extended to form a forming channel 13 with a constant diameter.

[0033] Therefore, the hollow part inside the die main body 1 is shaped like a bell mouth.

[0034] A circular mounting groove 15 is dug toward the outer wall at the front end of the forming channel 13 .

[0035] The outer surface of the side wall of the die main body 1 is provided with seve...

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Abstract

The invention provides a plastic pipe material extruding opening mold, which comprises an opening mold main body, a scraping ring and an opening mold lock cover, wherein the opening mold main body is a rotary body, the inside of the opening mold main body is hollow, the back end of the hollow part inside the opening mold main body is provided with a compression passage in a digging way, the diameter of the back end of the compression passage is great, the diameter of the front end is small, the diameter is gradually reduced in the extending process from the back end to the front end, a forming massage is formed at the front end of the compression passage in an extending and digging way, the front end of the forming passage is outwards provided with an installing groove in a digging way, the scraping ring is arranged in the installing groove and is made of polytetrafluoroethylene materials, one side of the scraping ring facing the passage is provided with an inclined surface, the forming passage and the inclined surface are in smooth transition and connection, the inside of the opening mold lock cover is hollow, the opening mold lock cover is arranged outside the front end of the opening mold main body, a front baffle wall is arranged at the front end of the opening mold lock cover, a through hole is formed in the center of the front side surface, and the dimension of the through hole is grater than the diameter of the forming passage. The plastic pipe material extruding opening mold belongs to the field of a mold for plastic pipe extrusion processing.

Description

technical field [0001] The invention relates to extrusion processing equipment for plastic pipes, which belongs to the category of molds for extrusion processing of plastic pipes. Background technique [0002] For a long time, plastic pipe extrusion dies have been simple integrated structures with relatively single functions. Usually, when there are defects on the extrusion surface of plastic pipes, they can only be solved by gradually adjusting other process conditions. Such a die can no longer meet the requirements of plastic pipe extrusion production, because there are many factors that cause surface defects in plastic pipe extrusion. If it is solved by gradually adjusting other process conditions in conventional methods, it will be time-consuming and labor-intensive, and the final problem will be It may not be resolved yet. [0003] Experiments have proved that the forming channel of PTFE material that meets certain roughness requirements has a positive effect on improv...

Claims

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Application Information

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IPC IPC(8): B29C47/12B29C48/30
CPCB29C48/30B29C48/32
Inventor 许宇权李可涛周波
Owner CHANGYUAN ELECTRONICS DONGGUAN
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