VHB adhesive film tearing mechanism

Abstract

The invention discloses a very high brightness (VHB) gum sheet film tearing mechanism which comprises a film tearing assembly and a carrier table used for locating VHB gum sheets in an adsorbing mode. The film tearing assembly comprises a rotary air cylinder, a supporting platform, a first rotation block, a second rotation block, a first stop block and a tensile elasticity piece. The first rotation block is rotatably arranged on the upper side of the supporting platform in the circumferential direction. The second rotation block is rotatably arranged on the front side of the first rotation block. A second stop block is arranged on the first rotation block. An extension arm is fixedly connected with the second rotation block and provided with a suction disc. The second rotation block is located on one side of the first stop block in a limited and stopped mode, so that the tensile elasticity piece is in a stretching state. The rotary air cylinder can drive the first rotation block to rotate, so that the second rotation block winds around the first stop block. The tensile elasticity piece can retract to drive the second rotation block to rotate by a set angle and to be stopped by the second stop block. By means of the VHB gum sheet film tearing mechanism, the function that protection films of each VHB gum sheet are automatically torn off can be achieved, so that production efficiency is improved, and labor cost is reduced.

Description

technical field [0001] The invention relates to a film tearing mechanism, in particular to a film tearing mechanism for a VHB adhesive sheet material. Background technique [0002] Electronic products, especially mobile phones, often need to be bonded with VHB adhesives during assembly and processing. VHB adhesives are usually supplied in sheets. The VHB adhesive sheets include adhesive films and protective films on both sides of the upper and lower sides. When VHB adhesive is used, the protective film needs to be torn off. However, in the prior art, the protective film of the VHB adhesive sheet is usually torn off manually, resulting in higher labor costs and lower production and processing efficiency. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a film tearing mechanism for VHB adhesive sheet material, which can realize the function of automatically tearing off the protective film of VHB adhesive sheet ...

AI Technical Summary

Problems solved by technology

[0002] Electronic products, especially mobile phones, often need to be bonded with VHB adhesives during assembly and processing. VHB adhesives are usually supplied in sheets. The VHB adhesive sheets include adhesive films and protective films on both sides of the upper and lower sides. When VHB adhesive is used, the protective film needs to be torn off. However, in the prior art, the protective film of the VHB adhesive sheet is usually torn off manually, resulting in high labor costs and low production and processing efficiency.

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