Tool and device capable of pre-fixing four-way valve and D joint tube

Abstract

The invention provides a tool capable of pre-fixing a four-way valve and a D joint tube. The tool comprises a tube expansion head, a tube expansion needle and a positioning base. By means of the tool,the problems can be effectively solved that the D joint tube and a valve body become loosened during fit, skewing exists, the insertion depth differs, and the fit clearance of the D joint tube and the valve body differs. By utilizing the tube expansion head for being in contact fit with the inner wall of a tube port of the D joint tube, the purpose of controlling the tube insertion depth can be achieved, and the stability is high; after the D joint tube is subjected to tube expansion, the D joint tube and the main valve body can be directly fixed through interference fit, and the perpendicularity can also be stably controlled; besides, it can be guaranteed the fit clearance of the D joint tube and the valve body is uniform to a certain extent, then the capillary action is facilitated, then it can be guaranteed that welding flux has good fluidity, and thus the stability of the welding quality is guaranteed. By means of a device capable of pre-fixing the four-way valve and the D joint tube, the full process of discharging, positioning, tube expansion and blanking can be automatically completed, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a tool and a device capable of pre-fixing a four-way valve and a D connection pipe, and belongs to the technical field of air-conditioning equipment. Background technique [0002] At present, in the technical field of air-conditioning equipment, the four-way valve mainly adopts two methods of integral welding and split welding. Among them, the integral welding method requires pre-fixing the D connection pipe and the valve body before welding. At present, this work is mainly It is realized manually. After the D pipe is inserted into the valve body, the welding tool is installed, and then the insertion depth needs to be controlled by the positioning block on the welding tool. However, due to the loose fit between the D adapter and the valve body, this method has problems such as skewing, different insertion depths, and different matching clearances between the D adapter and the valve body, which is not conducive to the stability ...

AI Technical Summary

Problems solved by technology

However, due to the loose fit between the D adapter and the valve body, this method has problems such as skew, different insertion depths, and different gaps between the D adapter and the valve body, which is not conducive to the stability of welding quality.

In addition, when picking up materials, it needs to be picked up by hand, and there are certain requirements for the operating proficiency of the staff. Otherwise, the D connection is easy to fall off from the valve body, and the operation steps are many, and the production efficiency is low.

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