Electric heating steel plate laminating method and laminating machine thereof

Abstract

Belongs to the technical field of plate lamination, and particularly relates to glass lamination of a pvb film of a photovoltaic module. The device is mainly composed of an upper cover (1), a lower cover (2), a sealing middle frame (3), a pressurizing steel plate (4), a conveying belt (6), an electric heating plate (10) and the like, the upper cover (1), the lower cover (2) and the sealing middle frame (3) form a sealing box body, the sealing box body is divided into an upper cavity (12) and a lower cavity (13) by the steel plate (4) and a sealing strip (7), a workpiece to be laminated is arranged in the lower cavity (13), the upper cavity (12) and the lower cavity (13) are vacuumized and heated at the same time, for example, the upper cavity (12) and the lower cavity (13) are heated to 120 DEG C and the vacuum to 1Pa, and the electric heating plate (10) is arranged in the upper cavity (12 The air in the to-be-laminated workpiece is exhausted, then the upper cavity (12) is filled with certain atmosphere, the vacuum degree is reduced, for example, the vacuum degree is reduced to 50 KPa, the lower cavity (13) keeps high vacuum unchanged, the steel plate (4) forms pressure on the to-be-laminated workpiece under the vacuum pressure difference of the upper cavity (12) and the lower cavity (13), the steel plate (4) downwards presses the to-be-laminated workpiece, and the to-be-laminated workpiece is pressed by the steel plate (4). The pressure can be adjusted by adjusting the vacuum degree difference between the upper cavity (12) and the lower cavity (13).

Description

technical field [0001] The invention relates to a plate electric heating steel plate laminating machine, in particular to a laminating device for PVB / EVA / SGP film glass plate and a laminating method thereof. Background technique [0002] PVB laminated glass production equipment, at present, both at home and abroad adopt a three-step process: constant temperature and humidity lamination chamber lamination, preheating and rolling exhaust, mounting and fixing, hot pressing into the autoclave, the electric power of the entire production line is about 200KW, the workshop The area is about 500M2, the equipment investment is about 1 million yuan, and the production is under the high pressure of 1.1Mpa-1.2Mpa, which is dangerous, labor-intensive, noisy and energy-consumption. [0003] EVA film laminated glass production equipment can complete the production in one step, but the quality of EVA laminated glass cannot reach the quality of PVB laminated glass and cannot become a mainstr...

AI Technical Summary

Problems solved by technology

[0002]PVB laminated glass production equipment currently adopts a three-step process at home and abroad: constant temperature and humidity lamination room lamination, preheating and rolling exhaust, and fixed installation , into the autoclave hot press forming, the electric power of the whole production line is about 200KW, the plant area is about 500M2, the equipment investment is about 1 million yuan, and it is produced under the high pressure state of 1.1Mpa-1.2Mpa, which is dangerous, requires a lot of labor, and is noisy. high consumption

[0003]EVA film laminated glass production equipment can complete the production in one step, but the quality of EVA laminated glass cannot reach the quality of PVB laminated glass, and cannot become a mainstream product. Secondly, the equipment Unable to produce qualified PVB film laminated glass products

[0004] patent CN200810017856.4 and patent 200810231854.5, although the technical problem of not using autoclave is solved, but the loading and unloading of glass is very troublesome and requires a lot of time and a lot of Manual operation, low output per shift, unable to meet production needs

[0005] Patent 2013101555505.0 uses rubber sheet as the isostatic pressing material, which has a short lifespan in high temperature environment and needs to be replaced regularly.

[0006] Solar cell module laminator, because of the problem of thermal expansion and deformation, it is impossible to achieve high temperature heating of the upper cover, and the lamination efficiency of pvb modules is low, so it is difficult to meet the production demand

[0007] Laminators for solar cell modules must use high-temperature-resistant rubber sheets, which are easily damaged and need to be replaced regularly, resulting in high production costs.

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