Method for scrubbing silk-screen printing and classification inspection conveyor belt

Abstract

The invention discloses a method for scrubbing a silk-screen printing and classification inspection conveyor belt. The method involves a device comprising four parts, namely, a base, a screw rod, a sponge block and a sponge clamping groove; the sponge block and the sponge clamping groove are mounted on a stand and under the belt through the screw rod and the base; the belt is automatically transmitted and rubbed against the sponge to be scrubbed, so as to achieve the online cleaning mode. The method has the beneficial effects that reject ratio of the surface of a battery piece caused by dirt on the belt can be reduced, the cleaning cycle of the belt can be effectively controlled, the scrubbing can be performed all the time without shutdown, the operation is convenient and controllable, and therefore, the device maintenance time is reduced, and the output is increased.

Description

technical field [0001] The invention relates to the field of manufacturing crystalline silicon solar cells, in particular to a screen printing and sorting transmission belt scrubbing method. Background technique [0002] At present, the industrialization process of selective emitter crystalline silicon solar cells mainly includes texturing, diffusion, preparation of selective emitter junction, wet etching, PECVD coating and screen printing. Among them, the main purpose of the screen printing process is to print grid lines, electrodes and electric fields on the front and back of silicon wafers to form positive and negative electrode leads, and then dry at low temperature and sinter at high temperature to make solar cells. The prepared battery sheets will be tested by a classification inspection machine and classified according to current or power. Screen printing machines and sorting and testing equipment basically rely on rubber belts to transport silicon wafers and cells. ...

AI Technical Summary

Problems solved by technology

Screen printing machines and sorting and testing equipment basically rely on rubber belts to transport silicon wafers and cells. Belts will be stained after long-term use, which will affect the quality of cells. Especially, screen printing will be more susceptible to paste and volatile organic compounds. pollution, resulting in poor cell surface and lower electrical performance parameters

Therefore, the belt needs to be cleaned and scrubbed regularly, and the scrubbing requires the machine to be shut down. Currently, the belt is cleaned every 12 hours, which seriously affects the production capacity of the workshop.

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