Composite molding die for polyethylene winding structure wall tube

Abstract

The invention relates to a composite molding die for a polyethylene winding structure wall tube, which solves the defects that die core tubes of various specifications need to be prepared for producing tubing of different lengths because the length of the die core tube and the length of the tubing correspond one by one in the prior art, the cost is high and the die core tube is inconvenient to replace. The composite molding die for the polyethylene winding structure wall tube comprises a cylinder with a smooth outer wall, wherein the cylinder can be freely sheathed on a support frame in a rotating mode; the middle of the support frame is provided with an axle hole connected with a main axle; the inner wall of the cylinder is provided with an axial spacing component matched with the support frame; a heating device for heating the inner wall of the cylinder is arranged in the cylinder; the length of the cylinder is at last two times of the width of the winding unit of the polyethylene winding structure wall tube to be produced; and the length of the cylinder is at least two times of the width of the winding unit to ensure that the an overlapped part is positioned on the outer wall of the cylinder when the winding unit is winded. Temperature required by the winding unit to fuse is provided by the cylinder to guarantee the fusion effect. Meanwhile, a lap joint seam is eliminated, and the tubing quality is improved.

Description

technical field [0001] The invention relates to a composite molding die for structural wall pipes, in particular to a composite molding die for anti-deformation polyethylene winding structural wall pipes. Background technique [0002] High-density polyethylene (HDPE) winding structural wall pipes are widely used at home and abroad for rain and sewage drainage pipes. Due to the use of different structural wall designs, this type of pipe has the advantages of saving raw materials, high ring stiffness, and long service life. , stable and reliable quality, convenient connection, good airtightness and other advantages, so it has a strong market potential. [0003] There are many types of structural wall pipes with different sizes and specifications, and different types of structural wall pipes use different production equipment. The equipment products are relatively single, the comprehensive utilization performance of the equipment is poor, and there is no potential to be tapped...

AI Technical Summary

Problems solved by technology

[0008] The present invention solves the defects of one-to-one correspondence between the length of the mold core tube and the pipe material in the prior art, and the production of pipes of different lengths requires the preparation of mold core tubes of various specifications, the cost is high, and the defect of inconvenient replacement of the mold core tube is provided. Simple structure polyethylene winding structure wall pipe compound molding mold, without replacement, can realize the production of pipes of various lengths and specifications, and the cost is low

[0009] The invention also solves the defect that the core tube of the mold is heated as a whole in the prior art, which causes deformation in the middle of the core tube of the mold, which affects the demoulding of the pipe and the service life of the core tube itself, and provides a composite molding of a polyethylene winding structure wall tube Mold, short length, small deformation after heating, easy demoulding, long service life

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