Model cutting device for mobile phone heat dissipating graphite sheet

Abstract

The invention relates to a model cutting device for a mobile phone heat dissipating graphite sheet. The device comprises a first model cutting unit, a first waste discharging unit, a double-face adhesive tape laminating unit, a second model cutting unit, a single-face adhesive tape separating unit and a third model cutting unit which are sequentially arranged in the moving direction of a materialbelt. The graphite sheet laminated on single-face adhesive tape is formed in a model cutting manner in the first model cutting unit. After outer frame waste materials of the graphite sheet are discharged through the first waste discharging unit, in the double-face adhesive tape laminating unit, double-face adhesive tape with a release film and the graphite sheet are laminated, locating and punching are carried out in the second model cutting unit, and after single-face adhesive tape is discharged through the single-face adhesive tape separating unit, the third model cutting unit carries out punching on the double-face adhesive tape. Compared with the prior art, at first, the single-face adhesive tape serves as a material belt carrier, model cutting forming of the graphite sheet is achieved, then the release film serves as the material belt carrier, model cutting forming of the double-face adhesive tape is achieved, the fragmentation rate and the machining difficulty of the graphite sheet are reduced greatly, and the quality and the production efficiency of finished products are improved.

Description

technical field [0001] The invention belongs to the technical field of mobile phone heat dissipation, and relates to a die-cutting device for a mobile phone heat dissipation graphite sheet. Background technique [0002] As a common communication device in people's daily life, mobile phone has gradually become an indispensable tool for people due to its multiple advantages such as portability and entertainment. After the mobile phone is used for a long time, its temperature will rise, and the mobile phone will become hot. The common cooling method for mobile phones is to paste thermal conductive silicone grease or heat dissipation diaphragm on the mobile phone. The heat dissipation diaphragm is generally a graphite sheet, copper sheet, or a composite structure of graphite sheet and copper sheet. When the graphite sheet is used as the heat dissipation diaphragm, the graphite sheet and the double-sided adhesive tape need to be bonded together, and then pasted on the heat dissi...

AI Technical Summary

Problems solved by technology

However, because the graphite material is relatively brittle and easy to break, if the graphite sheet and the double-sided adhesive tape are punched separately and then bonded together, not only is it easy to cause the graphite sheet to have a high rate of fragmentation, but it is also difficult to bond the die-cut graphite sheet to the double-sided adhesive tape. The surface adhesive is accurately fitted, and the double-sided adhesive is completely 1mm wider than the graphite sheet on one side; After the waste of the outer frame of the graphite sheet is drained and then the double-sided adhesive on the lower layer of the graphite sheet is punched, the viscosity of the double-sided adhesive is too high and the fit between the graphite sheet is too tight, resulting in the waste of the outer frame of the graphite sheet being covered by the double-sided adhesive. Sticks firmly and is difficult to remove, so the method is not feasible

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