Three-axis-linkage automatic sand blasting device for diamond wire polycrystalline silicon slices

Abstract

The invention discloses a three-axis-linkage automatic sand blasting device for diamond wire polycrystalline silicon slices. The three-axis-linkage automatic sand blasting device comprises a longitudinal transmission mechanism, a transverse transmission mechanism, a vertical transmission mechanism, a spray gun module, a sand pump and a sand vat. The longitudinal transmission mechanism is used for driving the diamond wire polycrystalline silicon slices to enter and exit from a sand blasting area. The transverse transmission mechanism is arranged above the longitudinal transmission mechanism and used for fixing the spray gun module. The transverse transmission mechanism can perform reciprocating motion in the X-axis direction. The output end of the vertical transmission mechanism is connected with the transverse transmission mechanism, and the vertical transmission mechanism is used for driving the transverse transmission mechanism to move in the Z-axis direction. By means of three-axis-linkage of the longitudinal transmission mechanism, the transverse transmission mechanism and the vertical transmission mechanism, multi-freedom-degree numerical control adjustment is achieved; the processing requirement of the multiple types of diamond wire polycrystalline silicon slices can be met; in addition, the cutting depth and the surface microstructure of each diamond wire polycrystalline silicon piece can be strictly controlled; machining quality is uniform; and consistency is good.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a three-axis linkage automatic sandblasting device for diamond wire polysilicon chips. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] With the rapid development of my country's solar energy industry, the demand for solar cells continues to expand. How to process low-cost, high-efficiency core raw materials—silicon wafers has become an urgent issue for the industry. At present, the silicon wafers used to make solar cells on the market include mortar line monocrystalline silicon wafers, mortar line polycrystalline silicon wafers, and diamond wire monocrystalline silicon wafers. The surface of low-cost diamond wire cut polycrystalline silicon wafers is too smooth to be used for solar energy. Production of battery...

AI Technical Summary

Problems solved by technology

At present, the silicon wafers used to make solar cells on the market include mortar line monocrystalline silicon wafers, mortar line polycrystalline silicon wafers, and diamond wire monocrystalline silicon wafers. The surface of low-cost diamond wire cut polycrystalline silicon wafers is too smooth to be used for solar energy. Production of cells

At present, the secondary processing technology of diamond wire-cut polysilicon wafers at home and abroad includes chemical black silicon technology, but this technology is still in the experimental stage and cannot be used in industrial production. Serious environmental pollution, occupation of hazardous chemicals, high cost of equipment and many other problems

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