Method and device for automatically marking thickness difference of metal plate strip

Abstract

The invention relates to a method and a device for automatically marking the thickness difference of a metal plate strip. The method comprises the following steps of: recording an early-stage thickness difference standard, measuring the thickness of the plate strip in real time, transmitting and discriminating thickness data, sending a later-stage standard exceeding instruction, performing a mission action on a marking execution mechanism, and driving a marking pen. The standard exceeding position of the thickness difference of the metal plate strip can be synchronously and accurately marked on the basis of early-stage data acquisition and discrimination. The device for implementing the method comprises a thickness measuring instrument, an industrial personal computer with an alarm recorder and the marking execution mechanism, wherein the marking execution mechanism comprises a time relay, two intermediate relays, a double-shaft double-rod cylinder with a pneumatic valve and the marking pen; the tail end of the marking pen is connected with the double-shaft double-rod cylinder, and the head end of the marking pen faces the metal plate strip which moves horizontally; and the double-shaft double-rod cylinder is electrically connected with the time relay, the intermediate relays and the industrial personal computer. The method and the device have the advantages of capability of accurately and clearly marking unqualified plate strips, high automation degree, production efficiency and product yield, low labor intensity and the like, and are suitable for the manufacturing industry of the metal plate strip.

Description

technical field [0001] The invention relates to the fields of metallurgical engineering, information, and electromechanical technology, in particular to an automatic marking method and device for thickness difference of metal strips, which are suitable for application in the metal strip manufacturing industry. Background technique [0002] The industry that produces metal strips must continuously measure the thickness difference of the output metal strips. Usually, the equipment for measuring the thickness difference of metal strips includes thickness gauges and industrial computers. The operation process is: set the alarm recorder of the industrial computer The thickness difference of the good metal strip exceeds the set value, the thickness gauge measures the thickness difference of the metal strip on the horizontal line, and the real-time thickness difference is displayed on the industrial computer. [0003] Although the existing method and device can measure the thicknes...

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Problems solved by technology

[0003] Although the existing method and device can measure the thickness difference of the metal strip and display the value, it cannot guide the strip cutting of the metal strip in the subsequent process. Does the scissors act on the metal strip? When and where to act? At present, it depends on the operator's eyes to judge the position of the out-of-tolerance thickness of the metal strip, then stop the machine and use a micrometer to check whether there is an out-of-tolerance thickness, and finally decide whether to cut and how much to cut

It can be seen that manual judgment is time-consuming, laborious and fuzzy, and misjudgment often occurs, resulting in mis-cut or uncut, over-cut or under-cut, that is, either the material with an out-of-tolerance thickness is not cut off, or the material with a qualified thickness difference is cut off separately. Miscutting or not cutting, these are based on the absence of intuitive and accurate cutting marks on the metal strip coil, resulting in low metal strip yield or pass rate, low production efficiency, etc.

[0004] After searching by the inventor, no relevant literature reports on the automatic marking method and device for the thickness difference of metal strips have been found

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