Manufacturing method of EC connecting pipe or electronic expansion valve connecting pipe

Abstract

The invention relates to a manufacturing method of an EC connecting pipe or an electronic expansion valve connecting pipe, and belongs to the technical field of pipe machining and treatment. The manufacturing method comprises the following steps that (1) N groups of straightening units which are arranged side by side are used for synchronously straightening the front end parts of N coil pipes intolong pipe material sections, and N groups of chip-free rotary cutting units which are arranged side by side are used for synchronously cutting the long pipe material sections into short pipes; and (2) the order of the short pipes cut in the N groups of the chip-free rotary cutting units which are arranged side by side in a single step are arranged according to the position among the chip-free rotary cutting units, and at least one pipe end of each short pipe is subject to pipe end machining in sequence. The manufacturing method can effectively improve the automation degree of the manufacturing of the connecting pipes, and the production efficiency and flexibility of the connecting pipes can be effectively improved; and the method can be widely applied to the technical field of manufacturing of air conditioners, automobiles and the like.

Description

technical field [0001] The invention relates to a processing and forming method of a pipe fitting, in particular to a manufacturing method of an EC connecting pipe or an electronic expansion valve connecting pipe. Background technique [0002] As the main component of the air conditioner, the electronic expansion valve is a throttling element that can adjust the flow of refrigerant entering the refrigeration device according to a preset program. It usually includes a valve seat, a valve core, a valve stem, an actuator and connections. Connection on the valve seat. [0003] According to the shape, its connecting pipe has a straight tubular connecting pipe and an elbow shaped connecting pipe, such as the electronic expansion valve disclosed in the patent document CN207111959U, as its attached image 3 As shown, the connecting pipe includes a straight pipe-shaped connecting pipe 102 and an elbow-shaped connecting pipe 103, and the outer ends of the two connecting pipes are flar...

AI Technical Summary

Problems solved by technology

[0005] When manufacturing the connection pipes of the above-mentioned various structures, it is usually necessary to use a cutting device to cut the long pipe material into fixed-length pipe sections, and then transport these fixed-length pipe sections to the pipe section processing unit for loading to align the two ends according to the predetermined structure. More than one pipe end treatment; for the elbow-shaped pipe in the electronic expansion valve, it is necessary to transport the pipe section after the pipe end treatment to the pipe bending machine for pipe bending processing. The whole processing process is relatively low in automation and processing efficiency. Low

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