Stretching combined die and stretching method for special-shaped copper pipe

A special-shaped copper tube and combined mold technology, applied in the direction of wire drawing dies, can solve the problems of inability to form continuous drawing, low efficiency and high energy consumption, and achieve the effect of automatic production, reduction of production cost, and reduction of labor intensity.

Pending Publication Date: 2021-11-02
重庆海亮铜业有限公司
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  • Description
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Problems solved by technology

This kind of production method of continuous stretching of a single straight material is inefficient and cannot form continuous stretching. The short core needs to be fixed, the labor intensity of the operator is high, and the energy consumption is high. The smooth arrangement of production orders, the reduction of production costs and the water heater The development of the industry has adverse effects, and it is of great significance to solve the problem of low-efficiency production of special-shaped tubes

Method used

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  • Stretching combined die and stretching method for special-shaped copper pipe
  • Stretching combined die and stretching method for special-shaped copper pipe
  • Stretching combined die and stretching method for special-shaped copper pipe

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "arrangement", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two element...

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Abstract

The invention provides a stretching combined die for a special-shaped copper pipe. The stretching combined die comprises a combined core head and a combined outer die cooperating with the combined core head, and the combined core head comprises a moving core head and a special-shaped pipe core head which are arranged at the two ends of a core rod in a sleeving manner. The combined outer die comprises a diameter-shaping outer die cooperating with the special-shaped pipe core head and a diameter-reducing outer die cooperating with the moving core head. A diameter-reducing hole with the shape consistent with that of the moving core head is formed in the diameter-reducing outer die, a diameter-shaping hole with the shape consistent with that of the special-shaped pipe core head is formed in the diameter-shaping outer die, and the inner diameter of the diameter-shaping hole is smaller than that of the diameter-reducing hole. The invention further provides a stretching method for the special-shaped copper pipe. Continuous drawing forming is achieved through cooperation of the combined outer die and the combined core head. Continuous drawing of the special-shaped copper pipe is achieved, automatic production of stretching of the special-shaped copper pipe is conveniently achieved, the production efficiency and the yield are effectively improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of copper tube processing, in particular to a special-shaped copper tube stretching combined die and a stretching method. Background technique [0002] The main pipeline of the heat exchanger of the water heater mostly adopts special-shaped copper tubes such as cross tubes, D-shaped tubes, and round bubble tubes to improve heat exchange efficiency and speed up the time for hot water to flow out. At present, due to the irregular cross-section, the production of special-shaped pipes is done by straight drawing machine with fixed short core head. It is completed by a drawing die and a fixed short core head. Before stretching, it needs to pass In addition, the copper tube is first compressed into oval and other transitional section shapes, and then stretched to form a special-shaped straight tube. This kind of production method of continuous stretching of a single straight material is inefficient and cannot for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C3/02B21C1/22
Inventor 刘盛李耿张瑞峰
Owner 重庆海亮铜业有限公司
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