A synchronous winding-cooling setting device for outer spiral reinforced polyethylene pipe

By using a synchronous winding-cooling and shaping device, the base strip and reinforcing ribs are directly bonded in a molten state and form an interlaced mesh composite structure. This solves the problems of high energy consumption and weak mechanical properties of externally spiral reinforced polyethylene pipes, improves the interfacial bonding strength and bending resistance, reduces energy consumption, and avoids stress cracking caused by temperature differences.

CN224476571UActive Publication Date: 2026-07-10GANSU DA HUA JIESHUI SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GANSU DA HUA JIESHUI SCI & TECH CO LTD
Filing Date
2025-04-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing manufacturing process for externally spiral reinforced polyethylene pipes suffers from high energy consumption, weak interfacial bonding, and limited mechanical properties. In particular, excessive temperature differences during cooling can easily lead to stress cracking.

Method used

The synchronous winding-cooling and shaping equipment is adopted. The base strip and reinforcing ribs are extruded and wound synchronously in the molten state, and directly bonded by the molten interface. Combined with the rotational speed difference between the rotating discharge mechanism and the forming tube, an interlaced mesh composite structure is formed. A gradient cooling mechanism is used for staged cooling to avoid excessive temperature difference.

Benefits of technology

It achieves a reduction of energy consumption of more than 40%, improves the interfacial bonding strength, and significantly enhances the ring stiffness and bending resistance of the pipe, thus avoiding stress concentration and warping deformation.

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Abstract

The utility model discloses a kind of synchronous winding-cooling setting equipment of outer spiral reinforcing rib polyethylene pipe, it is related to polyethylene pipe preparation technical field, including baseband extruder, reinforcing rib extruder, forming assembly, driving assembly and output guide assembly, reinforcing rib extruder output end is provided with rotary discharge mechanism;Forming assembly has support sleeve and the forming pipe of coaxial rotation setting on support sleeve, for receiving and winding the tubular base structure formed by the baseband;The rotary discharge mechanism is coaxially sleeved on the outside of forming pipe, and the rotational speed difference of the rotary discharge mechanism and forming pipe generates relative reverse motion.The utility model passes through the rotational speed difference of rotary discharge mechanism and forming pipe, so that reinforcing rib is with equivalent reverse winding trajectory and baseband to form staggered grid, and the structure makes pipe material ring stiffness and bending resistance performance are both improved.
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