Device for testing tensile strength of protective film

Abstract

The invention discloses a device for testing tensile strength of a protective film. The device comprises a treatment device, two parallel opposite equal-length brackets, a tension meter, a servo motor and a winch, wherein the winch is connected with the servo motor; the tension meter and the servo motor are connected with the treatment device; two opposite clamping devices are vertically arranged between the two brackets, one clamping device is fixedly arranged at one end of the corresponding bracket, and the other clamping device is connected with the two brackets through slide rails; the servo motor and the winch are arranged at one end, without the clamping device, of the corresponding bracket; the winch is connected with the movable clamping device through a pull rope and the tension meter; the protective film is fixedly arranged between the two clamping devices, the servo motor is started by the treatment device, and the treatment device is used for recording the working state of the servo motor and the tension condition of the tension meter. The device has the advantages that by adopting the servo motor, the accuracy of the measuring data is higher, and the data continuity is strong; by adopting the spring buffer structure, the detection of the protective film with lower ductility is realized.

Description

technical field [0001] The invention relates to a tensile testing device, in particular to a protective film tensile strength testing device. Background technique [0002] According to the application, the protective film can be divided into digital product protective film, car protective film, household protective film, food fresh-keeping protective film and so on. With the popularization of digital products such as mobile phones in China, protective film has gradually become a general term for screen protective film, and its functions in the field of screen protective film are also varied. The earliest high-definition scratch-resistant, and now GLAUKE, 180 degrees and The favorite of OK8 functional protective film. The material has experienced more than 5 years of development from the earliest PP material to the current popular AR material, and has gradually been accepted by the majority of mobile phone groups. The main production was initially concentrated in industrial...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the tensile strength detection of the protective film is an indispensable part of the factory inspection of the protective film. The existing protective film stretch detection generally uses manual measurement with a counterweight, the measurement accuracy is low, the operation is complicated, and The tensile curve cannot be recorded continuously. The purpose is to provide a protective film tensile strength detection device to solve the problem that the tensile strength detection of the protective film is an indispensable link in the factory inspection of the protective film. The existing tensile testing of the protective film is generally done manually. Counterweight measurement, low measurement accuracy, complex operation, and the inability to continuously record the stretching curve

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