Thin film tension floating adjusting device for storage bag preparation

Abstract

The invention belongs to the technical field of storage bag preparation, and particularly relates to a thin film tension floating adjusting device for storage bag preparation. The device comprises a set of rollers, a floating bracket and a swing guide rod mechanism, wherein, the set of rollers comprises a plurality of fixed rollers and floating rollers which are arranged up and down at equal intervals; the floating bracket is used for mounting and fixing the floating rollers; the swing guide rod mechanism comprises a rotating shaft connected with an output shaft of the driving motor, a rotating rod, a transmission rod, a swing rod, a movable mounting seat, an arc guide rail and an arc sliding block, and one end of the rotating rod is fixedly connected with the rotating shaft. According to the device, by means of the quick-return characteristic of the swing guide rod mechanism, the floating rollers are driven to do downward slow release motion when a thin film machining section is static, the time interval requirements for constant-speed unwinding, thin film tapping, valve welding and the like of an unwinding device are met, and when a thin film is in a stepping state, the floating rollers are driven to do upward quick-return motion meeting the thin film stepping speed, the constant-speed stepping traction requirement that the initial speed of the thin film is zero and is higher than the unwinding speed is met, and it is guaranteed that damage, wrinkling and tensile deformation cannot be generated during stepping traction of the thin film.

Description

technical field [0001] The invention relates to the technical field of storage bag preparation, in particular to a film tension floating adjustment device for storage bag preparation. Background technique [0002] Storage bag is a common item in daily life. It is often used to store clothes, bedding and other soft objects. Among this type of storage bags, there is a vacuum storage bag that is particularly favored by consumers. The items are isolated from the outside air, and it also plays a role of moisture-proof and mildew-proof while being dust-proof, and this vacuum storage bag can also reduce storage space and facilitate handling and storage. [0003] The preparation process steps of the vacuum storage bag include the steps of film unwinding, hole opening, air valve welding, bottom sealing welding, side sealing welding, zipper head welding and bag cutting. During the preparation process of the storage bag, since the rear end of the production line is equipped with openi...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a film tension floating adjustment device for storage bags, which solves the problem that the existing tension adjustment mechanism can solve the tension of the film due to the change of the rear-end advancing mode to a certain extent. However, the floating of the tension floating roller is completely driven by the film, and the film will generate instantaneous tension during the stepping traction process, and the generation of instantaneous tension may cause the film tension to change beyond its strength limit in that instant. As a result, the film is damaged, wrinkled and stretched, which affects the quality of the storage bag

Images