Steel wall pipe opening extension forming device

Abstract

The invention provides a steel wall pipe opening extension forming device. The device comprises an extension forming device bottom plate, an extension forming device body and an extension die assembly support, wherein the front end of the extension die assembly support is provided with a cylindrical concave cavity; an extension die assembly comprises an extension die bottom plate, an extension die and an extension head, wherein the extension die bottom plate is fixed in the concave cavity and provided with a plurality of sliding rails which are in a radiation shape in the radial direction; the extension die is composed of a plurality of extension die sliding blocks which can slide along the sliding rails in the radial direction; the inner side face of an extension head module is an arc surface attached to the outer side face of the extension head, and the rear end of the extension head is connected with a hydraulic driving device; a plurality of reset springs are arranged between the outer side face of the extension die and the extension die assembly support. According to the steel wall pipe opening extension forming device, a steel wall pipe can be machined into a female end and a male end without being welded, and production efficiency of the socket and spigot type steel wall pipe is improved.

Description

technical field [0001] The invention relates to a processing and manufacturing equipment for steel-wall pipes, in particular to a steel-wall nozzle expansion forming device. Background technique [0002] Pipeline connection technology is a very important link in the process of pipeline engineering construction. The efficiency of connection technology directly affects the efficiency of pipeline engineering construction. Therefore, in the process of pipeline engineering practice, people continue to improve and optimize pipeline connection technology to improve construction efficiency. . [0003] At present, many pipeline connection processes have been proposed, such as butt welding, flange connection, screw connection, groove connection, socket connection and so on. Among them, the socket connection has the characteristics of simple, fast, time-saving, labor-saving, and low installation cost, so it is widely used in pipeline construction. Whether it is a straight seam steel ...

AI Technical Summary

Problems solved by technology

Whether it is a straight seam steel pipe or a spiral steel pipe, when used in pipeline engineering, in order to adopt the socket connection process, it is usually necessary to weld the socket head and the plug at both ends of a section of the pipeline. This welding process seriously restricts the pipeline. Production efficiency, on the other hand, due to the inconsistency between the diameter and size of the purchased socket and plug, it often leads to poor sealing performance after the pipe is connected by socket

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