Film blowing machine for plastic film

Abstract

The invention relates to the field of film blowing machines, in particular to a film blowing machine for a plastic film. The film blowing machine comprises a film blowing mechanism, a feeding mechanism, a tensioning mechanism, an exhausting mechanism and a cooling system; the feeding mechanism and the tensioning mechanism are arranged on the front and back sides of the film blowing mechanism; theexhausting mechanism is arranged at the top end of the film blowing mechanism; the cooling system is arranged inside the film blowing mechanism; the film blowing mechanism comprises a vertical frame,a film blowing die head, a fan, an inner flow guiding pipe and an outer flow guiding pipe; and the film blowing die head and the fan are fixedly connected on the bottom side of the vertical frame. According to the film blowing machine for the plastic film, under the elastic effect of springs, a moving roller is pushed by a clamping fork to press a front turning roller, a tubular film material canbe fully extruded, the air left during fitting of the film material can be exhausted, meanwhile, a pressing roller capable of sliding up and down is arranged on a back rack, then the long tensioning state of the film material can be kept in the conveying process of the film material, and the phenomena of wrinkles or bubbles can be avoided.

Description

technical field [0001] The invention relates to the field of film blowing machines, in particular to a plastic film blowing machine. Background technique [0002] The film blowing machine heats and melts plastic particles and blows them into films. There are many types of film blowing machines, such as PE, POF, PVC, etc. The new materials are blown out with brand-new particles. The color is uniform, clean, and the bag stretches well. , the processing process is: put the dry polyethylene particles into the lower hopper, and enter the screw from the hopper by the weight of the particles themselves. When the pellets contact the beveled edge of the thread, the rotating beveled edge faces the plastic and is perpendicular to the beveled edge face. The thrust pushes the plastic particles forward. During the process, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision friction between the particles, it is also gradually melted due to ...

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Problems solved by technology

[0003] Most of the existing plastic film blowing machines use external cooling to cool down the plastic film. Due to the high pressure and high pressure gas in the plastic film, the cooling effect is not ideal, and the setting of the herringbone board is also easy to scratch the outer wall of the plastic film, thus It is difficult to guarantee the processing quality

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