Film stretching device, film single rail stretching chain clip and chain clip unit

Abstract

The invention relates to a film stretching device, a film single-guiderail stretching chain clamp and a chain clamp unit. The chain clamp unit comprises a first support, a first roller, a second roller, a third roller and a clamping assembly. The chain clamp unit is different from a traditional chain clamp unit which is provided with 6-9 rollers and can reduce the quantity of the rollers, and disassembly time for the rollers of the chain clamp unit is shortened and working efficiency is high during periodical disassembly, cleaning and maintenance of the chain clamp unit. In addition, a first axis, a second axis and a third axis do not coincide, namely the first roller is offset towards one side relative to the third roller, and the second roller is offset towards the other side relative tothe third roller. In this way, the first roller, the second roller and the third roller with larger volumes and sizes can be mounted aiming at the first support with a unit width, shock resistance and durability are higher for the rollers with the large volumes and sizes, duration and time for maintenance and replacement of the rollers can be delayed, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of film stretching treatment, in particular to a film stretching device, a film single-rail stretching chain clip and a single chain clip. Background technique [0002] With the development of film stretching technology, a film stretching device has appeared. In the appropriate temperature range above the glass transition temperature and below the melting point (in high elastic state), the film is stretched by a certain multiple in the longitudinal direction and transverse direction through the film stretching device under the action of external force, so that the molecular chain or crystallization The surfaces are oriented in a direction parallel to the plane of the film and arranged in an orderly manner, and then heat-set in a tensioned state to fix the oriented macromolecular structure, and finally the film can be produced after cooling and subsequent treatment. Wherein, the film stretching device includ...

AI Technical Summary

Problems solved by technology

When the chain clip unit is regularly disassembled, cleaned and maintained, it takes a lot of time to disassemble and assemble the roller of the chain clip unit, and the work efficiency is low

In addition, the rollers on the single chain clip are prone to failure and when a failure occurs, it needs to be shut down for replacement and maintenance, thus affecting the production efficiency of the product

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