Automatic paper web deviation rectifying device

Abstract

The invention discloses an automatic paper web deviation rectifying device which comprises a front paper carrying roll, a front deviation rectifying roll, a rear deviation rectifying roll, a rear paper carrying roll, a light source, an imaging device, a longitudinally cut cursor position analysis and deviation calculation module and a deviation rectifying master control module. A paper web is led in from the front paper carrying roll, sequentially passes the front deviation rectifying roll and the rear deviation rectifying roll and finally is led out from the rear paper carrying roll, the front deviation rectifying roll and the rear deviation rectifying roll tension the paper web, the light source irradiates the surface of the paper web between the rear deviation rectifying roll and the rear paper carrying roll, the imaging device can be used for imaging the paper web irradiated by the light source and messaging the longitudinally cut cursor position analysis and deviation calculation module, the longitudinally cut cursor position analysis and deviation calculation module obtains paper web deviation position information by calculation and comparison and transmits the information to the deviation rectifying master control module, and the deviation rectifying master control module controls the front deviation rectifying roll and the rear deviation rectifying roll to axially and synchronously deflect in a plane perpendicular to the paper web. The automatic paper web deviation rectifying device is simple in structure, high in deviation rectifying precision, smooth in operation and convenient to use, and the motion state of the paper web is conveniently monitored, controlled and adjusted in real time.

Description

technical field [0001] The invention relates to an auxiliary device of a paper web production line, in particular to an automatic deviation correction device for a paper web. Background technique [0002] In the production process of banknote paper, it is necessary to install a set of deviation correction device before the paper web is curled, so that the rolled banknote paper is aligned with a longitudinal cutting cursor similar to a white watermark, which is convenient for the next process to complete paper defect detection, marking and cutting. cut. The slitting cursor appears as a white line when viewed under transmitted light. [0003] Most of the existing paper web correction systems are aimed at paper edge detection, which cannot meet the requirements of paper web correction for banknote paper or some special papers based on special marks embedded in the paper web, such as the position of the slitting cursor. The paper edge correction system seldom records the corre...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing paper web correction systems are used for paper edge detection, which cannot meet the requirements of paper web correction for banknote paper or some special papers based on special marks embedded in the paper web, such as the position of the slitting cursor. The paper edge correction system seldom records the correction effect, rarely detects and feedbacks the position of the correction mechanical frame, and rarely has the functions of alarming the mechanical jamming of the correction mechanical frame.

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