Cutting device suitable for adjustment of diamond wire mesh and cutting method

Abstract

The invention discloses a cutting device suitable for adjustment of a diamond wire mesh and a cutting method, and belongs to the field of photovoltaic products. According to the cutting device, the cutting wire mesh is arranged between two wire guiding wheels, a plurality of crystal rods are fixedly mounted on a crystal holder, edge cutting gaps are formed in the first end and the tail end, at thewire guiding wheels, of the cutting wire mesh correspondingly, the two edge cutting gaps correspond to the edge of the left side of the crystal rod located on the left side, and the edge of the rightside of the crystal rod located on the right side correspondingly, and a first diamond wire at the wire inlet end and a first diamond wire at the wire outlet end of the cutting wire mesh are arrangedwith the corresponding crystal rods in a staggered mode. The method comprises the steps that the crystal holder moves downwards, thus all the crystal rods descend at the speed of 2.0-2.2 mm / min, allthe crystal rods start to be cut after making contact with the cutting wire mesh, and the first crystal rod, the second crystal rod and the third crystal rod are cut simultaneously through the cuttingwire mesh. The first wire at the wire inlet end and the first wire at the wire outlet end of the cutting wire mesh can be prevented from being broken; and by adjusting the length of the cutting gaps,the crystal rods of different lengths can be quickly switched to be cut.

Description

technical field [0001] The invention belongs to the field of photovoltaic products, and in particular relates to a cutting device and a cutting method suitable for adjusting diamond wire nets. Background technique [0002] In the prior art, with the continuous improvement and development of the diamond wire cutting technology, the diameter of the diamond wire is gradually reduced from 80 microns to 70 microns, and then to 60 microns. As the diameter of the diamond wire continues to decrease, cutting The wire breakage rate of crystal ingots also increases, mainly because the wire breakage rate has an obvious upward trend when the diamond wire is unwound and taken up. [0003] In the prior art, there is a branching net for cutting, its patent application number: 201520797985.5; application date: 2015.10.16; publication number: 205033405U; publication date: 2016-02-17; its structure includes guide wheel and cutting wire net , the cutting wire net is arranged on the guide wheel...

AI Technical Summary

Problems solved by technology

[0004] But this cutting wire mesh has the following deficiencies when cutting: the first wire at the first and last ends of the cutting wire mesh is respectively connected to the pay-off wheel 15 and the take-up wheel 16 through the pulleys used for guiding; When the first wire participates in the cutting process, due to fluctuations in the tension of the gold steel wire of the wire mesh, and the insufficient stability of the cooling fluid carried by the edge of the cutting wire mesh, the inner wall of the wire groove of the guide wheel is severely worn, which affects the guiding effect of the wire groove , it is easy to cause disconnection of the take-up and release lines, resulting in economic losses; for each ingot of different lengths, the distance between two adjacent ingots is not the same, when switching between ingots of different lengths for cutting, a wire cutting net is required Make the cutting gap adapt to the distance between the two ingots, the operation time is long, and the production efficiency is low; in order to ensure that the cutting wire mesh will not be cut due to tension during the cutting process, the cutting wire mesh gap of the split wire mesh should be set to less than 5mm, but if the distance between the two ingots to be cut is too large, it is necessary to adjust the gap between the cutting wire nets of the wire mesh to adapt to the distance between the crystal ingots. It is cumbersome to adjust the gap between the cutting wire mesh and the accuracy of the cutting wire mesh is low, or the cutting is performed in two steps, resulting in low production efficiency

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