Film blowing machine provided with improved drawing mechanism

Abstract

The invention provides a film blowing machine provided with an improved drawing mechanism. The film drawing machine comprises an extrusion mechanism, a film blowing mechanism, the drawing mechanism and a reeling mechanism, wherein the film blowing mechanism comprises a die head, an air ring and a rack; the air ring is arranged above the die head; the die head and the air ring are separately fixedly arranged on the lower end of the rack; the drawing mechanism is arranged on the upper end of the rack; the extrusion mechanism is provided with a material outlet which is connected with the die head; the reeling mechanism comprises a reel which is used for reeling a film; the film blown from the die head is conveyed to the reel through the drawing mechanism; the upper end of the rack is provided with a cross support base; the drawing mechanism comprises a herringbone plate; the herringbone plate is arranged on the cross support base; the upper end of the herringbone plate is provided with a first pressing roll, a second pressing roll and a third pressing roll; the second pressing roll and the third pressing roll are separately pressed against the first pressing roll; the first pressing roll is in transmission connection with a motor I; and a first drawing assembly, a second drawing assembly and a third drawing assembly are sequentially arranged along the transmission direction of the film.

Description

technical field [0001] The invention belongs to the technical field of plastic films, and relates to a film blowing machine, in particular to a film blowing machine with an improved traction mechanism. Background technique [0002] The production of film mainly adopts a blown film machine. The raw material is heated into a molten state through the extrusion mechanism and extruded, and the film bubble is blown out by compressed air to make a film, and then the film is sent to the winding mechanism through the traction mechanism, and the winding mechanism will The film is rolled into a roll. [0003] Both the traction mechanism and the winding mechanism can affect the winding effect of the film. When the film is wound on the reel of the winding mechanism, it is easy to shift, which leads to a large misalignment between the upper and lower layers of the film roll. The probability of film offset dislocation will be greater. [0004] Secondly, in the prior art, the traction ro...

AI Technical Summary

Problems solved by technology

When the film is wound on the reel of the winding mechanism, it is easy to shift, which leads to a large misalignment between the upper and lower layers of the film roll. The probability of misalignment of the film will be greater when the

[0004] Secondly, in the prior art, the traction rollers used in the transport of the film have poor stability and only play the role of transport, and the film is prone to wrinkles during the transport process, thus affecting the final product quality

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