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A mold for producing plastic pipes

A pipe and mold technology, applied in the field of plastic pipe molds, can solve the problems of rising product failure rate, large pipe size error, rough pipe surface, etc., to improve product qualification rate, small pipe size error, and reduce production costs. Effect

Inactive Publication Date: 2011-12-14
句容市后白镇民生塑胶厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, automatic production lines are used in the production of PPR and PE. The mold matched with the outlet of the mixing extruder is a hollow cylindrical die head, which is made of cast iron. The surface of the pipe produced in this way is rough, and with Rust of cast iron and serious damage to the die head make the inner diameter of the die head less and less standard, so the size error of the produced pipe is large, which leads to an increase in the product failure rate, thereby increasing the production cost

Method used

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  • A mold for producing plastic pipes
  • A mold for producing plastic pipes

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] Such as figure 1 Shown: a mold for producing plastic pipes, including a hollow cylindrical die head 1, a gasket 2, a polytetrafluoroethylene pipe 3, grooves 4 are arranged on the inner wall of the die head 1 and along the circumferential direction, and polytetrafluoroethylene The inner diameter of the tube 3 is equal to the outer diameter of the plastic tube produced; the PTFE tube 3 is installed in the groove 4, and the top of the PTFE tube 3 is flush with the top of the die head 1, on the gasket 2 There are at least 4 threaded holes, and the top of the die head 1 is provided with a threaded hole corresponding to the position of the threaded hole of the gasket 2, and the gasket 2 is firmly fixed on the top of the die head 1 by the bolt 5, so that four The vinyl fluoride tube 3 can be fixedly installed in the inner cavity of the die head 1 through the gasket 2 ...

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Abstract

The invention discloses a mold for producing plastic pipes, which comprises a hollow cylindrical die head, a gasket, and a polytetrafluoroethylene pipe. Grooves are arranged on the inner wall of the die head along the circumferential direction, and the polytetrafluoroethylene The tube is installed in the groove, the top of the polytetrafluoroethylene tube is flush with the top of the die head, and the gasket is fixedly installed on the top of the die head. The invention has the advantages that: the outer surface of the pipe produced by the invention is smooth, and the size error of the pipe is small, which can improve the qualified rate of the product and reduce the production cost.

Description

technical field [0001] The invention relates to a mold, in particular to a mold for producing plastic pipes. Background technique [0002] A mold is a tool used to shape an article. This tool is composed of various parts. Different molds are composed of different parts. It mainly realizes the processing of the shape of the article through the change of the physical state of the formed material. PPR and PE pipes have the characteristics of light weight, corrosion resistance, no scaling, and long service life, so their usage is increasing. At present, automatic production lines are used in the production of PPR and PE. The mold matched with the outlet of the mixing extruder is a hollow cylindrical die head, which is made of cast iron. The surface of the pipe produced in this way is rough, and with Rust of cast iron and serious damage to the die head make the inner diameter of the die head less and less standard, so the size error of the produced pipe is large, which leads to ...

Claims

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Application Information

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IPC IPC(8): B29C47/20B29C48/32
Inventor 余维明
Owner 句容市后白镇民生塑胶厂