Manufacturing method for pipe connector

Abstract

The invention provides a manufacturing method for a pipe connector, and belongs to the technical field of manufacturing of metal pipe fittings. The pipe connector manufactured by using an existing welding and manufacturing method is high in cost, low in production efficiency and low in firmness. According to the method, an inner hole of an outer thread connector is machined to two sections with different diameters and the two sections correspond to a thread section and a hexagonal surface section on the outer surface of the outer thread connector respectively; the diameter of the inner hole corresponding to the hexagonal surface section is slightly small and the inner holes of the two sections are connected by an inclined plane; at least two grooves along the direction of the central line of the hole are formed in the wall of the inner hole corresponding to the outer thread connector and are formed along the peripheral direction of the inner hole; a metal pipe penetrates into the inner hole of the outer thread connector to form an assembly; the assembly is arranged on a lower die of a punching machine and the shape of a die cavity of the lower die is adapted to the outer shape of the outer thread connector; and the metal pipe is stamped into an inner cavity at the end of the metal pipe by an upper die, so that the wall of the metal pipe is tightly combined with the wall of the inner hole of the outer thread connector and is embedded into the grooves in the wall of the inner hole. By adopting the manufacturing method, the environmental protection property is improved, the cost is saved, the manufacturing is simple and rapid and binding force of the pipe connector is high.

Description

technical field [0001] The invention belongs to the manufacturing technology of metal pipe fittings, and in particular relates to a method for manufacturing pipe joints. Background technique [0002] The pipelines of automobile water circulation are connected by multiple sections. These pipelines are generally composed of metal pipes and external thread joints arranged at the pipe ends. The joints are welded, which consumes welding consumables and electric energy, the cost is high, the firmness of the pipe joints is not high, and the production efficiency is low. Contents of the invention [0003] The purpose of the present invention is to solve the problems of high cost, low production efficiency and low firmness of pipe joints in the existing welding manufacturing method, and to provide a simple and quick pipe joint manufacturing method. [0004] For this reason, the present invention adopts the following technical solutions: a method for manufacturing a pipe joint, whi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high cost, low production efficiency, and low firmness of pipe joints in the manufacture of pipe joints by the existing welding manufacturing method, and to provide a simple and quick manufacturing method for pipe joints