Production method of novel plastic composite pipe

Abstract

The invention discloses a production method of a novel plastic composite pipe, which comprises the following steps: producing an inner pipe, clamping several positioning clamps on the outer surface of the inner pipe with an extrusion device; driven by a traction device, fitting the outer pipe on On the outer surface of the inner tube, the convex post on the positioning clip is stuck on the inner wall of the outer tube, and an annular channel is formed between the inner tube and the outer tube to obtain a composite tube with openings at both ends; hot melt glue is applied to the annular channel at one end of the composite tube , use the extrusion device to clamp the plastic cover into the closure; erect the composite pipe, place the closed end on the conveyor belt, and inject heat preservation material into the annular passage; apply hot melt glue to the annular passage at the other end of the composite pipe, and use extrusion The plastic cover is clamped and closed by a pressing device; the composite tube is ventilated and foamed, and placed at a constant temperature of 25-35°C for 6-10 hours to obtain a new type of plastic composite tube.

Description

technical field [0001] The invention relates to the technical field of composite pipe production, in particular to a production method of a novel plastic composite pipe. Background technique [0002] Plastic pipe is a general term for pipes made of plastic materials. Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, it has light weight, small water flow resistance, energy saving and material saving, environmental protection, light weight, high strength, and durability Corrosion, smooth inner wall without fouling, easy construction and maintenance, long service life, etc., widely used in building water supply and drainage, urban and rural water supply and drainage, city gas, electric power and optical cable sheathing, industrial fluid transportation, agricultural irrigation and other construction industries , industry and agriculture. [0003] The existing plastic composite pipe has no fixed structure between the inner and outer...

AI Technical Summary

Problems solved by technology

[0003] The existing plastic composite pipe has no fixed structure between the inner and outer pipes. During the process of transporting liquid, on the one hand, the inner pipe is easy to slip due to the action of gravity, resulting in different local mechanical strengths of the pipe, making the composite pipe easy to damage; On the one hand, due to the alternation of cold and heat, the inner tube may shrink and slip from the outer tube

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