Plastic thin film opening and flattening device and plastic thin film online side cutting and flattening method

Abstract

The invention discloses a plastic thin film opening and flattening device and a plastic thin film online side cutting and flattening method, and relates to the technical field of plastic thin film production processing. The plastic thin film opening and flattening device comprises a hopper, an extruder, a mould, a herringbone clamp plate, a traction roller, a horizontal cutting frame, a guiding roller, a triangular frame body, traction rollers, a horizontal cutting frame, a guiding roller, a triangular frame body, involute guide rollers and a coiling device. A horizontal side cutting mechanismis arranged on an operation platform of the traction roller, and comprises a horizontal slide rod and a tool rest sliding chute with a cutter; the cutter is used for unilaterally cutting a cylindrical film extruded through the traction roller into a single cutting film; after passing through the guiding roller, the single cutting film enters the involute guide rollers under the guiding roller soas to form a thin film through the involute guide rollers; and a thin film opening and flattening mechanism is connected under the involute guide rollers. According to the plastic thin film opening and flattening device and the plastic thin film online side cutting and flattening method provided by the invention, in the process of opening and flattening a thin film, the friction forces of a film surface and arc-shaped opening rods are uniform, the thin film is not easy to scratch, and the occurrence of the phenomenon of gauffer and the problem of multiple creases caused by the imbalance of friction forces of various points of a middle cutting type trapezoid display rack are avoided.

Description

technical field [0001] The invention relates to the technical field of production and processing of plastic films, in particular to a stretching and flattening device for plastic films and an online side-cutting and flattening method for the film. Background technique [0002] In the blow molding process of plastic film, there are a variety of winding methods, the simplest one is to take the double-layer cylindrical film after the film bubble passes through the herringbone splint, and take the center or friction winding method to wind the finished roll. The other is to cut the double-layer cylindrical film of the film bubble through the herringbone splint on both sides to form a double-layer single piece, and then pass through the coiling device to coil into two finished rolls, or on both sides and in the middle It is cut into multiple pairs of double-layer single sheets, and is wound into multiple single-layer rolls or double-layer rolls by a coiling device. [0003] The f...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problem of the film rolling and wrinkling caused by uneven friction distribution in the prior art, one of the purposes of the present invention is to provide a plastic film stretching and flattening device, which can realize film blowing and unfolding. One-time completion, avoiding secondary processing

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