Pressure feed device of plastic film bidirectional stretching equipment

Abstract

The invention discloses a pressure feed device of plastic film bidirectional stretching equipment. The pressure feed device comprises a base, a second transmission shaft, a first transmission shaft, afixed seat, a first cavity, a first coupler, a first movable seat, a first screw, a motor, a first guide groove, a first fixing part, a first connecting shaft, a first compression device, a second compression device, a second connecting shaft, a second fixing part, a second movable seat, a second screw, a second guide groove, a second cavity and a second coupler. The pressure feed device has theadvantages that the device is reasonable and simple in structure, low in production cost and convenient to mount; the first compression device and the second compression device can perform compressionconveying on the lateral side of a film through compression conveying belts, the compression conveying belts are in face contact with the film, and accordingly compression conveying effect is increased greatly, and damage during film pressure feed is avoided; the first coupler and the second coupler can effectively transmits the power of the first transmission shaft and the second transmission shaft to the first compression device and the second compression device to drive the compression conveying belts to move.

Description

Technical field: [0001] The invention relates to plastic stretching forming equipment, in particular to a pressure feeding device of plastic film bidirectional stretching equipment. Background technique: [0002] Biaxial stretching is a relatively advanced plastic film production process. The plastic film obtained by biaxial stretching has smaller thickness and better performance. In particular, with the development of the economy, more and more fields require high-strength, high-insulation optical-grade plastic films (thickness is usually 10-300 μm) or ultra-thin plastic films (thickness is usually less than 1 μm), and Generally, these plastic films can only be produced by biaxial stretching process; while the compression area of ​​the pressure feeding device of the existing plastic film biaxial stretching equipment is relatively small, and the adjustment of the compression force is also relatively troublesome, which seriously affects the thickness of the film. The quality...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a pressure feeding device for plastic film biaxial stretching equipment in order to solve the above problems, which solves the problem that the compression area of ​​the pressure feeding device of existing plastic film biaxial stretching equipment is relatively small. The adjustment of force is also troublesome, which seriously affects the quality of film products.

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