Scraper device suitable for silk screen printing of solar battery

Abstract

The invention discloses a scraper device suitable for silk screen printing of a solar battery. The device comprises a scraper rest, a scraper body arranged below the scraper rest and rubber baffles symmetrically arranged on the two sides of the scraper rest, wherein the rubber baffles are detachably connected to the side surfaces of the scraper rest; first sliding groove for adjusting the spacingsof the lateral rubber baffles are arranged at the two sides, in the length direction of the scraper body, of the upper end of the scraper rest, and second sliding grooves for adjusting the heights ofthe rubber baffles are arranged at the two sides, in the length direction of the scraper body, of the scraper rest. According to the device, aiming at the problem that battery piece silk screen printing in the prior art has more dry pulp, and thus the overall printing quality is influenced, the rubber baffles which can be flexibly adjusted up and down are arranged on the two sides of the scraperbody, and the rubber baffles can effectively prevent lateral flow of pulped material, so that the risk of the dry pulp is reduced, the loss of the pulped material is reduced, and the silk screen printing quality of a battery piece is guaranteed.

Description

technical field [0001] The invention relates to the technical field of solar cell production, in particular to a scraper device suitable for screen printing of solar cells. Background technique [0002] Solar cell, also known as "solar chip" or "photovoltaic cell", is a kind of photoelectric semiconductor sheet that uses sunlight to directly generate electricity. generate current. Conventional solar cell production processes include texturing, diffusion, etching, screen printing and other processes. . [0003] In the process of screen printing of solar cells, the paste in the printing area is required to be between the screen (4) graphics, and the range of printing graphics is consistent with the size of the cell; in the printing process, screen printing is composed of five major elements, namely, silk Screen printing plates, squeegees, inks, printing tables and substrates. The basic principle of screen printing is: use the basic principle of the screen printing plate's ...

AI Technical Summary

Problems solved by technology

During the screen printing process, the slurry in the screen will flow to the edge of the screen with the movement of the scraper and the return knife, and the slurry on the edge of the screen will slowly dry to form a dry slurry; the dry slurry not only It cannot be used. Furthermore, if the dry paste is brought into the printing area by a scraper or a return knife, it will also cause wear on the screen, affect the electrode printing quality of the battery sheet, and even cause poor batches.

The traditional screen printing adopts a 60-degree tool holder design. Due to the high printing pressure of the squeegee on the screen, broken grids and virtual printing are prone to occur during the printing process, and the overall printing effect is not very good.

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