A clamping device for film transverse stretching machine

Abstract

The invention discloses a clamp entering device used for a film transversal stretcher. The clamp entering device used for the film transversal stretcher comprises a tray. The tray is a hollow sealed box. A plurality of air holes are formed in the surface of the tray. The tray is in the shape with the front wide and the back narrow. The air holes are evenly distributed and are the same in size. The two sides of the tray are each provided with a compressed air spraying nozzle. The tray and the compressed air spraying nozzles are all communicated with a compressed air pipeline. The clamp entering device further comprises an upper guiding roller and a lower guiding roller which can press a cellulose membrane after being matched. The clamp entering device is arranged on a clamping opening of the stretcher. An air cushion mode is adopted for the tray. The cellulose membrane does not make contact with the surface of the tray any more. Friction force generated when the cellulose membrane runs is reduced. The clamp entering efficiency is high. The cellulose membrane is fixed through pressure between the upper guiding roller and the lower guiding roller. The upper guiding roller and the lower guiding roller have supporting, fixing and guiding effects on the cellulose membrane. The edge of the cellulose membrane is blown into the clamping opening through air flow sprayed out of the compressed air spraying nozzle. Accidental injuries happening during manual operation are avoided. Clamp entering operation safety is improved.

Description

technical field [0001] The invention relates to a film transverse stretching machine, in particular to a clamping device used for the film transverse stretching machine, and belongs to the technical field of cellulose film. Background technique [0002] The transverse stretching machine is a device for transversely stretching the film. It is mainly composed of guide rails and chain clips. The guide rails are in the form of endless rotation. There is a guide rail on each side. It runs synchronously under the drive, and at the same time, the guide rail gradually widens to realize the transverse stretching of the sheet. During the operation of the equipment, clamping is a very important link. At present, stretching machines are mainly used for materials with relatively high stiffness such as PET. The clamping devices include shear rollers, lifting trays, etc., but materials such as cellulose films with low stiffness and high humidity are relatively soft. , the traditional cla...

AI Technical Summary

Problems solved by technology

At present, stretching machines are mainly used for materials with relatively high stiffness such as PET. The clamping devices include shear rollers, lifting trays, etc., but materials such as cellulose films with low stiffness and high humidity are relatively soft. , the traditional clamping method can easily lead to deformation and wrinkling, making it impossible to clamp

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