Sealant overflow process of photovoltaic assembly framing

Abstract

The invention discloses a sealant overflow process of photovoltaic assembly framing. The sealant overflow process comprises the steps of: (1) injecting a sealant into a mounting groove of the frame by an injection head, wherein the injection head is provided with a tip consisting of a platform and a bevel surface on the outlet thereof, the platform and the bevel surface have an included angle beta of 75 to 80 degrees, and the height h of the bevel surface is equal to 7 to 8mm; (2) placing a laminated plate on the lifting platform of a frame loading machine, and pressing the frame from four corners of the frame by using a press block of the frame loading machine to inlay the mounting groove of the frame into the edge of the laminated plate so as to result in sealant overflowing, and framing to obtain the photovoltaic assembly; and (3) continuously conveying the photovoltaic assembly to a sealed chamber through the conveying belt of a plurality of automatic line units to cure the sealant. The sealant overflow process provided by the invention can realize a good sealant overflowing effect, thereby ensuring the insulation sealing property of the photovoltaic assembly, greatly reducing the sealant removal frequency, and improving the photovoltaic assembly production efficiency.

Description

technical field [0001] The invention relates to a production process of a photovoltaic module, in particular to a glue overflowing process of a photovoltaic module group frame. Background technique [0002] Photovoltaic modules are mainly composed of glass, EVA, cells, backplanes and frames. In the production process of photovoltaic modules, the cells are sandwiched between the glass and the backplane by EVA to form a laminate (also known as semi-finished photovoltaic modules. ), and then assemble the frame onto the laminate to finally form a photovoltaic module. [0003] The specific process of the photovoltaic module frame is: (1) Use silica gel as the sealant, and fill the sealant into the installation groove of the frame through the glue injection head for glue injection; (2) Set the installation groove of the frame with the framing machine On the edge of the laminate (that is, the edge of the laminate is pressed into the mounting groove of the frame), the sealant in th...

AI Technical Summary

Problems solved by technology

Although the photovoltaic modules 6 are transported on the automatic line units 7, the crawler belts 71 only contact the frame 2 to generate conveying force, but because there is a transmission gap between the automatic line units 7, the crawler belts 71 on the automatic line units 7 are easy to touch the laminate. 5. As a result, the gap between the laminate 5 and the installation groove 21 changes, and the uncured sealant 3 is prone to faults and overflows again, polluting the crawler belt 71 and the photovoltaic module 6, and also causing phenomena such as lack of glue and poor insulation and sealing; in addition ,like Figure 7 As shown, in order to meet the needs of the framing machine and the layout of the automatic line, sometimes it is necessary to set a pair of mutually perpendicular automatic line units 7 in the automatic line to make the delivery flow of the photovoltaic module 6 turn vertically. The gap between the pair of mutually perpendicular automatic line units 7 is small Also due to the influence of the steering force of the track 71, the vertical turning transition of the photovoltaic module 6 here is very unstable, and it is easy to cause the sealant 3 to overflow unstable; that is, during the uncured time of the sealant 3, the traditional The glue overflow process of photovoltaic modules can easily cause frequent relative movement between the frame 2 and the laminate 5 when transferring and handling the modules, resulting in uncontrolled overflow of the sealant 3, which increases the workload or impact of the subsequent repair of the sealant 3 Quality of photovoltaic modules 6

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