Winding-unwinding device for protection film

Abstract

The invention discloses a winding-unwinding device for a protection film. The winding-unwinding device comprises an underframe, wherein a fixed block is fixedly installed at the top of the underframe; the top of the fixed block is fixedly connected with the bottom of a motor box; a motor is fixedly installed in the inner cavity of the motor box; and an output shaft of the motor penetrates out of the motor box and is fixedly connected with one end of a winding-unwinding rod. The winding-unwinding device disclosed by the invention winds and unwinds the protection film through arranging the cooperation of the underframe, the fixed block, the motor box, the motor and the winding-unwinding rod, thus storage and use for the protection film are much facilitated; limit during the winding and unwinding for the protection film is carried out through the cooperation of a limit sleeve, a lifting limit device, a slide block, a push rod, a fixed sleeve, a first spring, a connection rod, a support column, a limit plate and a through groove, thus the protection film is prevented from moving during the winding and unwinding; and meanwhile, installation for the sleeve is much facilitated during the winding and unwinding for the protection film through lifting the limit plate, thus the effects of being higher in speed and more labour-saving during the winding and unwinding for the protection film are achieved.

Description

technical field [0001] The invention relates to the technical field of protective film production, in particular to a protective film retracting 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. [0003] In order to facilitate the retraction of the protective film, people usually put one end of the protective film on a hollow sleeve, and wrap the protective film on it by rotating the hollow sleeve. When using it, you only need to pull one end of the protective film to use it. It greatly saves the storage space of the protective film, and also makes the protective film more neat and smooth. In order to facilitate the winding of the protecti...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a protective film retracting device, which has the advantage of being convenient and simple to connect the sleeve, and solves the problem that the limit device mentioned in the background technology prevents the sleeve from moving and is not conducive to the installation of the sleeve. Causes very troublesome, time-consuming and labor-intensive problems when installing the sleeve

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