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Producing teahnology for high-polymer composite pipe and its special die

A production process and composite pipe technology, applied in the field of multi-layer composite pipe production process, can solve the problems of unreasonable production process, high cost of production equipment, affecting product quality, etc., and achieve convenient operation, low investment cost and low internal stress small effect

Inactive Publication Date: 2005-02-09
马林远
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process is unreasonable, the cost of production equipment is high, and the operation is not very convenient.
And because the processing of the pipe is completed by the production process of heating first and hot stretching, this kind of hot stretching will cause great damage to the metal pipe, which will affect the product quality, resulting in poor uniformity and low anti-violence rate.

Method used

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  • Producing teahnology for high-polymer composite pipe and its special die
  • Producing teahnology for high-polymer composite pipe and its special die
  • Producing teahnology for high-polymer composite pipe and its special die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the mechanical equipment used in the present invention has extruder, hot-melt machine, automatic cutting machine etc. and all can adopt known machinery, wherein the pipe drawing machine and the special-purpose mold of the polymer composite pipe of one of main mechanical equipment are then It is specially developed and improved by the applicant. Among them, the structure of the special mold for multi-layer composite pipe is as attached image 3 As shown, its length, width, and height are 160×120×100mm. The mold is composed of an outer mold 4 and a core mold inside it, wherein the core mold is composed of an inner core mold 2 and a center core outside it. mold 3, and one end between the two and the outer mold 4 is respectively provided with an inner injection nozzle 32 and an outer injection nozzle 42 arranged in a ring. The shapes of the cavities of the inner mandrel 2 and the middle mandrel 3 are similar to the cross-sectional shape of the pipe to be proc...

Embodiment 2

[0033] Embodiment 2: required mechanical equipment is with embodiment 1, and its technological process is as attached figure 2 shown. The inner tube is made of polypropylene or cross-linked polypropylene, and it is preheated. After 4 stages of heating, it enters the mold and is shaped to form the required inner tube. After cooling, it passes through the polymer composite tube, one of the mechanical equipment. Drawing machine traction, the following production steps, process conditions, etc. are referring to embodiment 1. After completing the steps in Example 1, the polymer composite tube made is sprayed, and then enters an automatic cutting machine for automatic cutting. The staff inspects and packs the polymer composite tube, and finally the polymer composite tube is Composite pipes are put into storage.

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Abstract

The production process of the composite polymer pipe includes the following steps: coating one layer of thermosol to the inner surface of inner plastic pipe and inserting matched seamless metal pipe; reducing and drawing the combination of the inner plastic pipe and outer metal pipe; heating the reduced and drawn pipe; coating the outer surface of the outer metal pipe with adhesive; compounding one layer of outer plastic pipe; and cooling to form during drawing. The special production mold includes outer mold and inside core mold, the core mold consists of inner core mold and outer core mold, and there are inner molding nozzles and outer molding nozzles set between the inner core mold and the outer mold and between the outer core mold and the outer mold separately.

Description

technical field [0001] The invention relates to a production process of a multi-layer composite pipe, in particular to a production process of a composite pipe with polymer plastic layers compounded on the inner and outer walls of a seamless metal pipe, and a special mold involved in the production process . Background technique [0002] In order to overcome the deficiencies such as the lack of corrosion resistance of steel pipes and the poor strength and short life of plastic pipes, various metal-plastic composite pipes and their production methods have been researched and developed one after another. Among them, the aluminum-plastic composite pipe has attracted people's attention because of its good ductility, light weight and softness, convenient processing technology compared with steel, and good economy. Water delivery pipes. [0003] Present aluminum-plastic composite pipe sticks a circle of aluminum foil on the outer periphery of the plastic inner pipe, and then com...

Claims

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Application Information

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IPC IPC(8): B29C63/18B29C65/40
Inventor 马林远
Owner 马林远
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