Bidirectional stretching multifunctional mechanism of high-heat-sealing-strength anti-fog film

Abstract

The invention discloses a two-way stretching multifunctional mechanism for a high-heat-sealing-strength anti-fog film, which comprises a mounting table, a second U-shaped frame is mounted at one end of the top of the mounting table, mounting frames are symmetrically arranged on two sides of the mounting table, and rotating rods are symmetrically arranged at two ends in the mounting frames. The mounting frame is hinged to one side of the mounting table with a set of rotating rods as the axis, and chain wheels are symmetrically mounted at the tops and the bottoms of the outer sides of the rotating rods. The inner threaded pipe is forced to move on the outer side of the long threaded rod under the action of threads, the first hinge rod is driven to push one end of the mounting frame to move, the two mounting frames are opened or tightened with the hinge shaft as the axis, and the included angle between the two mounting frames and the mounting table is adjusted; the transverse stretching width of the high-heat-sealing-strength anti-fog film is adjusted, and when the device is not used, the servo motor can be controlled to rotate, so that the two sets of mounting frames are close to the two sides of the mounting table, and therefore the occupied space of the whole two-way stretching mechanism is reduced.

Description

technical field [0001] The invention relates to the technical field of film preparation, in particular to a biaxial stretching multifunctional mechanism of a high heat-sealing strength anti-fogging film. Background technique [0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins for packaging and as lamination layers, plastic packaging and plastic packaging products account for an increasing share of the market , especially composite plastic flexible packaging, has been widely used in food, medicine, chemical industry and other fields, of which food packaging accounts for the largest proportion, and film is also an item that is frequently used in people's daily life. [0003] The document with the authorization announcement number CN214773976U discloses a biaxial stretching production device for polyester film. Although the circular linkage components in the two working chambers are driven to rotate, a plurality of film fixing me...

AI Technical Summary

Problems solved by technology

[0004] 1. In the comparison document, before stretching the film transversely, since the included angle between the shells of the two sets of devices is fixed, when different types of films need to be stretched transversely, it cannot be freely adjusted according to actual needs. Accurately adjust the transverse stretching degree (i.e. width) of the film, thus reducing the scope of application of the device in actual use

[0005] 2. And there is no corresponding film trimming structure in the comparison file, so it is impossible to trim the stretched film in time, which makes the parts that are clamped and not stretched during the film stretching process always exist, affecting the film. quality, and while adjusting the transverse stretch width of the film, the operator also needs to manually adjust the position of the cutter in the follow-up film trimming device to keep the trimming width of the film trimming device constant, thereby reducing the cost of the entire device Functionality and practicality

[0006] 3. Moreover, the current film biaxial stretching production device cannot freely adjust the width of the edge material after the film is trimmed by the trimming device without adjusting the position of the cutter after adjusting the transverse stretching width of the film, nor can it Adjust the transverse stretching time of the film according to the properties of different films

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