A squeegee for screen printing of solar cells

Abstract

The invention discloses a scraper used for the silk-screen printing of a solar cell, comprising a scraper body, wherein the lower end of the scraper body is provided with a scraping strip. The scraper is characterized in that two sides of the scraper body are respectively provided with an auxiliary scraper blade; an included angle between the auxiliary scraper blade and the front part of the scraper body is 110-130 degrees; the lower end of the auxiliary scraper blade is provided with the auxiliary scraping strip; and the lower plane of the auxiliary scraping strip is leveled with the lower plane of the scraping strip. When the scraper is used in the silk-screen printing process of the solar cell, a printing zone becomes a relatively sealed environment, and two auxiliary scraper blades can better control slurry within a printing graph, thereby greatly improving the quality and the effect of the silk-screening printing; in addition, slurry can be prevented from generating; and printing fragments have small possibility of being generated in the printing process. According to the scraper, the slurry amount is saved, and the frequency for an operator to shovel slurry is lowered.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to a scraper used for screen printing of solar cells. Background technique [0002] In the process of screen printing of solar cells, the paste in the printing area is required to be between the screen patterns, and the range of printing patterns is consistent with the size of the cells. In the printing process, if the amount of slurry added is relatively large, the drying speed of the slurry outside the printed graphics will be accelerated, resulting in a waste of slurry, and the dried slurry will have a certain impact on the printing effect and the life of the screen plate. adverse effects. [0003] The structure of the equipment currently used for solar cell screen printing is: comprising a printing table, a screen is arranged on the printing table, a scraper and a ink return knife are arranged above the screen, and the scraper and the ink return knife are composed o...

AI Technical Summary

Problems solved by technology

[0004] The main disadvantages of the scraper with the above structure are: in the printing process, if the amount of paste used is small, it will affect the quality of screen printing of solar cells; The dry paste will not only reduce the printing quality of the cell sheet, but also cause cell fragments during the printing process

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