Dies for forming machines for wound socket joints

Abstract

The invention relates to a mold for forming equipment of a winding type socket and spigot joint. The mold comprises a mold body and a mold clamping part which are integrally designed, wherein the outer diameter of the mold body is fixed while the outer diameter of the mold clamping part is variable; the mold body comprises a base and a partitioning plate which are opposite to each other; a closing ring is arranged between the base and the partitioning plate and connects the base with the outer edge of the partitioning plate. The mold is applicable to production of winding pipes.

Description

technical field [0001] The invention relates to the technical field of coiled pipe production, in particular to a mold used for forming equipment for coiled socket joints. Background technique [0002] Existing spiral winding plastic pipes can be divided into specific product forms such as hollow wall winding pipes, carat pipes, steel belt reinforced winding pipes, internal rib reinforced winding pipes, and plastic steel winding pipes according to the different materials used in winding molding. Because of its high ring stiffness, it is widely used in drainage, low-pressure water supply and other occasions. The connection methods of pipelines mainly include electric fusion belt connection, heat shrink sleeve connection, electric fusion socket connection, socket sealing ring connection, clamp connection and other methods. Among them, the electric fusion belt connection and the thermoplastic sleeve connection are widely used due to their low cost, but the construction environ...

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Problems solved by technology

[0003] At present, the commonly used molds are divided into two types, one is the tapered fixed mold, which uses the gradually increasing diameter of the tapered pipe to fix the pipe, but due to the error of the pipe diameter of the pipe of the same specification, the fixed position of the pipe on the mold The change is large, and the final formed socket also has a large error; the other type is a mold with a variable outer diameter, which has a retractable shell for fixing the pipe, but due to the diameter of the pipe of the same specification There is an error, which causes a large change in the outer diameter of the mold, which makes the final formed socket also have a large error

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