Corona machine

Abstract

The invention discloses a corona machine. The corona machine comprises a corona machine main body; and a front pull roll, a first corona roll, two unwinding rolls, a second corona roll and a rear pull roll are mounted on the corona machine main body. A workpiece can be unwound effectively in the transverse direction through the two unwinding rolls, the wide workpiece is prevented from being stretched and deforming, and the corona machine is suitable for workpieces with different widths; and meanwhile, the front pull roll and the rear pull roll are respectively arranged in the front and at the rear of the first corona roll and the second corona roll, the workpiece is pulled through the front pull roll and the rear pull roll, when the workpiece enters the first corona roll and the second corona roll, stable tension is formed on the width of the workpiece and the workpiece is tightly attached to roll surfaces of the first corona roll and the second corona roll, then air is prevented from entering space between the width of the workpiece and the first coronal roll or space between the width of the workpiece and the second coronal roll, reverse surface corona is prevented effectively, and corona stability of the corona machine disclosed by the invention is improved.

Description

technical field [0001] The invention relates to a corona machine, in particular to a corona machine applicable to casting film equipment. Background technique [0002] The corona machine equipped for the high-speed cast film production line is often a single high-power generator, and the corona roller is also a steel core rubber-coated roller with a large diameter, and the moment of inertia is very large, which requires that the corona roller must have It has an independent traction power, and it needs to be paired with a pressure roller to form a traction force on the workpiece. [0003] Since the casting film equipment is a wide-width equipment, the traction force formed by the pressure roller and the traction roller in the entire width range is easy to be inconsistent. On the one hand, it will cause stretching and deformation of the film surface of the casting film; If the part is not pressed tightly, air will enter between the film surface and the corona roller and be b...

AI Technical Summary

Problems solved by technology

[0003] Since the casting film equipment is a wide-width equipment, the traction force formed by the pressure roller and the traction roller in the entire width range is easy to be inconsistent. On the one hand, it will cause stretching and deformation of the film surface of the casting film; If the part is not pressed tightly, air will enter between the film surface and the corona roller and be broken down by the high-voltage arc, forming a reverse corona

Facing this industry problem, we urgently need to solve the above two problems: 1. The film surface of the cast film needs to be effectively unfolded before entering the corona roller; 2. How to make the film close to the corona roller during the corona process to prevent air was brought in

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