Manufacturing method for pipe connector

A manufacturing method and technology of pipe joints, which are applied in the field of metal pipe fittings manufacturing, can solve the problems of poor firmness of pipe joints, low production efficiency, and high cost of pipe joints, and achieve the effects of high firmness, simple manufacturing, and no need for solder consumption

Inactive Publication Date: 2014-12-24
新昌县三鼎机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 t

Method used

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Example Embodiment

[0006] The manufacturing method of the present invention is to process the inner hole of the external threaded joint into two sections with unequal diameters, respectively corresponding to the threaded section and the hexagonal surface section on the outer surface of the externally threaded joint. The inner hole diameter of the corresponding hexagonal surface section is slightly smaller. They are connected by an inclined plane, and at least two grooves along the centerline of the hole are opened on the inner hole wall of the corresponding thread section. The grooves are distributed along the circumference of the inner hole, and the metal pipe penetrates the inner hole of the external threaded joint. The assembly is formed, and the assembly is placed on the lower die of the punching press. The shape of the lower die cavity is adapted to the external shape of the external thread joint. The upper die is used to punch into the inner cavity of the metal pipe end, and the metal pipe is...

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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...

Claims

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Application Information

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IPC IPC(8): B21C37/28
Inventor 王红霞
Owner 新昌县三鼎机械有限公司
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