Manufacturing method for opening pulling copper pipe

Abstract

The invention relates to a manufacturing method for an opening pulling copper pipe. Design is performed in order to solve the technical problems that a manufacturing method and a machining process of existing like products cannot meet the requirements of a specific conical angle and a large hole diameter difference easily, and the automation degree is low. The manufacturing method is characterized in that after the first time of head driving of a copper pipe head driving machine and drawing oil irrigating, first-pass disk pulling is performed through a copper pipe disk pulling machine; then the second time of head driving is performed, and second-pass disk pulling is performed through the copper pipe disk pulling machine; the third time of head driving through the copper pipe head driving machine and drawing oil irrigating are performed, and third-pass disk pulling is performed through the copper pipe disk pulling machine; and then the copper pipe is straightened and cut off through a straightening and cutting-off machine, one end of the copper pipe is subjected to hole shrinkage through an expanding and shrinking machine at the two ends, the other end of the copper pipe is subjected to hole expanding through the expanding and shrinking machine at the two ends, and the finished copper pipe is manufactured. A workbench of the expanding and shrinking machine at the two ends is provided with a large work disk and a small middle round table; a support is provided with a hole expanding cylinder, a hole shrinking cylinder, a discharging groove and a discharging cylinder; the hole expanding cylinder is provided with a hole expanding head; and the hole shrinking cylinder is provided with a hole shrinking head.

Description

technical field [0001] The invention relates to a drawing process of a copper tube, and relates to a manufacturing method of a drawing copper tube. Background technique [0002] Copper tube, also known as copper tube, is a kind of non-ferrous metal tube. It is a pressed and drawn seamless tube. It is strong and corrosion-resistant. It is the first choice for the installation of tap water pipes, heating and cooling pipes. , the best use is as a water supply pipeline. When existing copper pipes of this type are used, some copper pipes need to be processed to form shrinkage and reaming to meet the requirements for use. The manufacturing method of drawing mouth of this kind of copper pipe is as disclosed in the Chinese patent literature with the application number 201010228466.9, the application publication date is 2010.12.01, the title of the invention is "a kind of multi-stage drawing and manufacturing method for micro-grooved tube"; the manufacturing method first makes the d...

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Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide a kind of manufacturing method of draw-mouthed copper tube to this field, so that it solves the difficulty in meeting the requirements of specific taper angle and larger diameter difference in existing similar product manufacturing methods and processing techniques, Technical issues with less automation

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