Welding tool for retroverted impeller of fan

Abstract

The invention relates to a welding tool for a retroverted impeller of a fan. The welding tool comprises an impeller clamp mechanism and an impeller centering mechanism which are independently arranged, and the impeller clamp mechanism comprises a bottom plate, an impeller supporting ring arranged on the bottom plate, a plurality of pressing plates arranged above the bottom plate along the circumference and pressure bearing rings arranged below the pressing plates; the pressing plates are arranged on the bottom plate through a supporting column and a first fastening bolt; the impeller supporting ring is abutted against an impeller rear disc, and the pressure bearing rings are erected on an impeller front disc; the impeller centering mechanism comprises a front disc positioning disc erected on the impeller front disc and a rear disc positioning disc arranged below the front disc positioning disc through a positioning mandrel, and the rear disc positioning disc is fixedly connected with the impeller rear disc. According to the welding tool, the impeller front disc and the impeller rear disc can be centered, welding spot welding operation is not needed in the impeller assembling process, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of fan impeller welding, and in particular relates to a welding tool for fan backward-inclined impeller. Background technique [0002] The backward inclined impeller is suitable for all kinds of large-scale equipment, such as: environmental testing machine, constant temperature and humidity machine, frozen food machinery, packaging machinery, etc., especially in some places that require high efficiency and low noise, the use of backward inclined impeller equipment is increasing . The quality of the backward inclined impeller must be ensured during the assembly process. A good fixture is extremely important for the accuracy of welding and the quality of the fan impeller. At present, the backward inclined impeller fixtures on the market usually have the following problems: 1), lack of centering measures, it is difficult to ensure the centering of the impeller front plate and the impeller rear plate during use...

AI Technical Summary

Problems solved by technology

At present, the backward inclined impeller fixtures on the market usually have the following problems: 1), lack of centering measures, it is difficult to ensure the centering of the impeller front plate and the impeller rear plate during use; 2), the impeller needs to be positioned when welding The solder joints are solidified, but defects such as cracks and lack of fusion are prone to occur during the spot solidification process, and the solder spot solidification operation is complicated, time-consuming, and assembly efficiency is low; 3), the current backward-tilted impeller fixture cannot solve the problem that the impeller is easily affected by stress after welding. deformation problem

Images