A billet tube automatic length measurement and feeding device for a cold rolling mill

Abstract

The invention discloses an automatic length measuring and feeding device for a blank tube of a cold-rolling mill and relates to the technical field of cold-rolling mills. The automatic length measuring and feeding device for the blank tube of the cold-rolling mill solves the problems of high cost and low efficiency of an existing cold-rolling mill due to depending too much on manual control. The automatic length measuring and feeding device for the blank tube of the cold-rolling mill comprises a raw material table and a length measuring conveying roller way, wherein the raw material table is provided with a discharge device, the length measuring conveying roller way is provided with a sensor and a trigger switch corresponding to the discharge region of the raw material table, an infrared sensor is arranged at the end of the length measuring conveying roller way near a rolling machine tool, and a feeding variable-frequency motor connected with an optical encoder is arranged at the position of the side of the length measuring conveying roller way corresponding to the infrared sensor. The automatic length measuring and feeding device for the blank tube of the cold-rolling mill is capable of automatically judging whether there is the blank tube on the length measuring conveying roller way and judging the length of the blank tube through the sensor, infrared sensor and optical encoder, the automatic length measuring and feeding device calculates the running length and fast forward distance of a feeding mechanism on the rolling machine tool connected with the device according to the length of the blank tube so as to realize the automatic length measuring and feeding of the cold-rolling mill and the automation of subsequent equipment, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of cold rolling mills, in particular to a cold rolling mill feeding device capable of automatically feeding materials and measuring the length of blank tubes. Background technique [0002] As a process equipment for cold rolling billet tubes, cold rolling mills are widely used in the pipe processing industry. However, most of the cold rolling mills in the prior art are not highly automated, and most of the automatic control is automatic. The two processes of feeding and automatic unloading, such as the invention named "Cold Rolling Mill with Automatic Feeding Device" and patent No. 201220251961.6 announced by the State Intellectual Property Office on December 19, 2012, the cold rolling The automatic control realized is only in the feeding process. Although it overcomes the defect of manual feeding in the traditional cold rolling mill, but in the process of rolling the billet tube, due to the uncertain length...

AI Technical Summary

Problems solved by technology

[0002] As a process equipment for cold rolling billet tubes, cold rolling mills are widely used in the pipe processing industry. However, most of the cold rolling mills in the prior art are not highly automated, and most of the automatic control is automatic. The two processes of feeding and automatic unloading, such as the invention named "Cold Rolling Mill with Automatic Feeding Device" and patent No. 201220251961.6 announced by the State Intellectual Property Office on December 19, 2012, the cold rolling The automatic control realized is only in the feeding process. Although it overcomes the defect of manual feeding in the traditional cold rolling mill, but in the process of rolling the billet tube, due to the uncertain length of the billet tube, when the feeding is completed, Since the feeding trolley can only withstand the rear end of the tube billet, the feeding trolley must be returned to the original position (reset), and the next tube blank to be loaded into the core rod enters the feeding trolley, and then clamped The device starts to feed after the core rod is clamped, so there is a period of auxiliary preparation time such as the return of the feeding trolley, loading, and clamping, so the previous billet tube must wait until it is completely rolled before loading and unloading the next billet tube. During the billet rolling process, the rolling distance between the previous billet and the next billet is manually controlled, so that the cold rolling mill cannot work continuously

Therefore, it not only increases a lot of labor costs, but also reduces the production efficiency.

[0003] The reason why the cold rolling mill in the prior art cannot realize complete automatic operation is that the main reason is that the length of the billet tube is uncertain, resulting in that the next billet tube cannot be well controlled after the previous billet tube is sent into the rolling machine tool. The feeding time of the billet tube and the distance from the previous billet tube, so in order to realize the fully automatic control of the cold rolling mill, the feeding process of the rolling stage must be automated to realize the feeding process of the rolling stage The automatic length measurement of the billet tube in the feeding stage must be the premise

Although there are different schemes of steel pipe length measurement methods in the prior art, most of them are only used to measure the length of finished steel pipes, and there is no application in the field of cold rolling mill automatic technology, and the technical requirements for realizing this measurement scheme are complex and the installation of equipment is cumbersome. Not well put into practical application and production

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