A method of manufacturing a pipe joint

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

Inactive Publication Date: 2016-09-07
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 the manufacture of pipe joints by the existing welding manufacturing method, and to provide a simple and quick manufacturing method for pipe joints

Method used

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Embodiment Construction

[0006] The manufacturing method of the present invention is to process the inner hole of the externally threaded joint into two sections with unequal diameters, respectively corresponding to the threaded section and the hexagonal section on the outer surface of the externally threaded joint, the diameter of the inner hole corresponding to the hexagonal section is slightly smaller, and the two sections of the inner hole They are connected by inclined planes, and at least two grooves along the centerline of the hole are provided on the inner hole wall of the corresponding threaded section. The multi-channel grooves are distributed along the circumference of the inner hole, and the metal pipe penetrates into the inner hole of the external threaded joint. Form the assembly, place the assembly on the lower die of the punching machine, the cavity shape of the lower die adapts to the external shape of the external threaded joint, punch the inner cavity of the metal pipe end with the up...

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PUM

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Abstract

The invention discloses a pipe joint manufacturing method, which belongs to the technical field of metal pipe fitting manufacturing. The pipe joint manufactured by the existing welding manufacturing method has high cost, low production efficiency and low firmness of the pipe joint. In the method of the present invention, the inner hole of the externally threaded joint is processed into two sections with unequal diameters, respectively corresponding to the threaded section and the hexagonal section on the outer surface of the externally threaded joint, and the diameter of the inner hole corresponding to the hexagonal section is slightly smaller. The spaces are connected by inclined planes, and at least two grooves along the centerline of the hole are provided on the wall of the inner hole corresponding to the threaded section. The component is placed on the lower die of the punch press. The shape of the lower die cavity is adapted to the external shape of the external threaded joint. The upper die is punched into the inner cavity of the metal pipe end, and the metal pipe is squeezed and expanded to make the metal pipe wall and the external thread The wall of the inner hole of the joint is tightly combined and embedded in the groove on the wall of the inner hole, which improves environmental protection, saves cost, is simple and convenient to manufacture, and has high bonding force of the pipe joint.

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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Patent Type & Authority Patents(China)
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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