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Roundness correcting method for continuous fiber reinforced thermoplastic pipe port

A technology for reinforced thermoplastic and continuous fibers, which is applied in the field of rounding of continuous fiber reinforced thermoplastic pipes, can solve the problems of out-of-round state, elliptical or polygonal pipe section circumference, unbalanced tension force, etc. Convenient, high-strength effect

Pending Publication Date: 2018-09-18
上海英泰塑胶股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of this technology of winding strips while heating, due to the unbalanced tension force during the winding process of the left and right or upper and lower layers of prepreg tapes, it is easy to cause the section circumference of the produced pipes to become elliptical or polygonal and other non-circular states, especially those larger than This is especially true for pipe diameters above 300mm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for rounding the end of a continuous fiber-reinforced thermoplastic pipe. The inner plug die head is inserted into the inner hole from the two sides of the pipe end by heating to a temperature near the softening point of the plastic micro-card, and the pipe is initially corrected under the action of temperature and extrusion force. The roundness of the inner wall of the end, on this basis, the outer wall of the pipe end is pushed slowly and forcefully from the outer wall of the pipe end until the design length is reached on this basis, and the outer wall of the pipe end is rounded from the outer wall at a temperature higher than the melting point of the plastic and kept The outer diameter is precisely dimensioned, and then cooled naturally with the inner and outer molds, so as to achieve the purpose of campusing the inner and outer walls of the pipe end;

[0027] Specifically follow the steps below to implement:

[0028] A. The port circular calibration machine...

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Abstract

The invention relates to the field of reinforcing high molecular compounds with incompact or adhered fibrous materials, in particular to a roundness correcting method for a continuous fiber reinforcedthermoplastic pipe port. The roundness correcting method for the continuous fiber reinforced thermoplastic pipe port is characterized by comprising the following steps in sequence: A, equipment preparing; and B, port roundness correcting. The roundness correcting method is high in strength, is convenient in manufacturing, and is wide in scope of application.

Description

technical field [0001] The invention relates to the field of reinforcing polymer compounds with loose or adhered fibrous materials, in particular to a method for rounding the ends of continuous fiber reinforced thermoplastic pipes. Background technique [0002] Continuous fiber reinforced thermoplastic pipes have the characteristics of high heat resistance, high pressure resistance, corrosion resistance, long life, low cost, etc., and are widely used in many fields such as heat, water diversion, water supply, gas, crude oil, chemical industry, and industry. A product that can fully replace metal pipes, plastic pipes and metal-plastic composite pipes in the future. [0003] The existing continuous production of continuous fiber reinforced thermoplastic pipe technology is to use the inner plastic pipe as the mold pipe for winding the core layer strip, and while heating the outer layer of the inner plastic mold pipe, heat the thermoplastic prepreg tape and wind the prepreg tape...

Claims

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Application Information

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IPC IPC(8): B29C53/20
CPCB29C53/20
Inventor 林世平
Owner 上海英泰塑胶股份有限公司
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