Pre-insulated tube foaming fixture

By designing a pre-insulated pipe foaming fixture and adjusting the spacing of the clamping plates using adjusting bolts, the ellipticity problem in the HDPE pipe foaming process was solved, ensuring the roundness of the pre-insulated pipe and the uniformity of the foaming layer, reducing production costs, and improving product quality and production efficiency.

CN224675357UActive Publication Date: 2026-08-25SHANGHAI YUOUXING MARINE ENGINEERING CO LTD
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Patent Information

Application Number
CN202521661820.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-05
Publication Date
2026-08-25
Estimated Expiration
2035-08-05

AI Technical Summary

Technical Problem

HDPE pipes are prone to deforming into an elliptical shape during the foaming process, resulting in uneven foam layer thickness and deformation of the roundness of the shape. This affects the thermal insulation performance of the pre-insulated pipe, increases the difficulty of installation, and increases production costs.

Method used

Design a pre-insulated tube foaming fixture. By rotating the adjusting bolt, the clamping plate is moved horizontally, and the distance between the abutment plate and the clamping plate is precisely adjusted to ensure that the pre-insulated tube remains round during the foaming process, which can accommodate pre-insulated tubes of different sizes.

Benefits of technology

This improves the roundness accuracy of pre-insulated tubes, reduces scrap rate and uneven foaming layer, lowers production costs, and enhances product quality and production efficiency.

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Abstract

The utility model discloses a kind of pre-insulated tube foaming fixture tool, including the placement component for pre-insulated tube support, the side fixed connection of placement component is used for the abutting plate for pre-insulated tube leaning, the top of placement component movably provided with the clamping plate for pre-insulated tube position clamping, the position of another side of placement component and corresponding clamping plate is equipped with the adjusting assembly for clamping plate adjustment, placement component includes the placement plate for pre-insulated tube support placement, the side of placement plate is provided with connecting bolt one, the side of abutting plate is provided with the screw groove one matched with connecting bolt one.The utility model drives clamping plate horizontal movement by rotating adjusting bolt, accurately adjusts the distance between abutting plate and clamping plate, effectively solve the waste and foaming layer uneven problem produced when pre-insulated tube foaming due to ovality, guarantee its roundness, improve product quality;Different size pre-insulated tube can be adapted, reduce production cost.
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