Full-automatic air ring

Abstract

A full-automatic air ring comprises an air loop, an annular base, an annular air chamber, a controller, a thickness gauge and a plurality of air quantity adjusting mechanisms, wherein the air loop andthe annular air chamber are both arranged on the annular base, and an air passing channel and a first annular air port are formed in the annular base; arc air quantity adjusting plates of the air quantity adjusting mechanisms extend into the air passing channel and arranged as an annular, and the sides of the adjacent arc air quantity adjusting plates are mutually contacted and matched; and the thickness gauge is arranged above the full-automatic air ring, an output end of the thickness gauge is electrically connected with a signal input end of the controller, and the control input ends of the lifting mechanisms are electrically connected with the signal output end of the controller. The lifting of each arc air quantity adjusting plate is controlled through the real-time thickness value measured by the thickness gauge, the air quantity is adjusted in real time, the cooling amplitude of each position of a cylindrical film cylinder is controlled, the stretching amplitude at each position of the cylindrical film cylinder is further controlled, and therefore the thickness of the cylindrical film cylinder is more uniform after being cooled and shaped.

Description

technical field [0001] The invention relates to film blowing equipment, in particular to a fully automatic air ring. Background technique [0002] In an up-blown water-cooled film extruder, a water-cooling ring and an air ring are generally installed above the extrusion die of the extruder. The shape of the cylindrical film tube is adjusted, and the cylindrical film tube is cooled and shaped in conjunction with the stretching traction of the upper winding. [0003] However, during the process of extrusion, stretching and cooling, the cylindrical film tube is affected by factors such as the uniformity of the temperature of the molten plastic, the uniformity of the thickness of the die head, and the uniformity of cooling. The film tube always has uneven thickness in the circumferential direction, and the thickness of the cut film is also uneven everywhere, which greatly reduces the quality of the film. Contents of the invention [0004] The technical problem to be solved b...

AI Technical Summary

Problems solved by technology

[0003] However, during the process of extrusion, stretching and cooling, the cylindrical film tube is affected by factors such as the uniformity of the temperature of the molten plastic, the uniformity of the thickness of the die head, and the uniformity of cooling. The film tube always has uneven thickness in the circumferential direction, and the thickness of the cut film is also uneven everywhere, which greatly reduces the quality of the film.

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