JPH01159122A - Cutting position controller for steel strip having counter mark - Google Patents

Abstract

PURPOSE:To correct the deflection of each counter mark interval and suppress the error of the cutting position by installing the position counters in the equal number to that of the counter marks printed on a steel strip set between a counter mark detector and a cutting machine and carrying out each corresponding position counting. CONSTITUTION:When a counter mark detector 3 detects an initial counter mark 2, a pulse generator 4 inputs the feed quantity of a steel strip 1 into a position counter 51, which outputs a cutting instruction into a cutter driving device 6 when a set feed quantity is obtained, and a cutter 7 cuts the steel strip 1 at a prescribed position, and the data of the position counter 51 is reset. When the second counter mark 2 is detected, the feed quantity is inputted into a position counter 52, and when the third counter mark 2 is detected, a position counter 5N performs counting. Therefore, even if the counter mark interval is not constant because of the extension and contraction of the steel strip 1 due to the temperature variation or the deflection of printing of the counter marks 2, the generation of the cutting position error is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cutting position control device for a steel strip with eye marks that cuts at a predetermined position in a pattern.

(Prior art) Conventionally, when cutting a steel strip with a printed pattern at a predetermined position, multiple eye marks are printed on the steel strip between an eye mark detector and the cutting section to serve as the cutting reference position. . The steel strip is fed at a nearly constant speed by a separate drive, and the passage of the eyemark is detected by an eyemark detector.

When an eye mark is detected by an eye mark detector.

The feed amount (movement position) of the steel strip is detected by a pulse transmitter, and
The position is accumulated using two position counters.

When the position counter detects that the steel strip has been fed to the predetermined position of the eye mark, the cutter drive device drives the cutter to cut the steel strip at the predetermined position.

When the next eyemark is detected by the eyemark detector, the interval between each eyemark is assumed to be constant, and the previous positional data of the 9-position counter is restored to calculate the next positional integration. Thereafter, the steel strip is cut in the same manner as described above. That is, in the prior art, the cutting position is controlled on the condition that the intervals between the eye marks are the same.

(Problems to be Solved by the Invention) In the prior art, the position of the valley eye marks is controlled on the assumption that the interval between them is the same. If the intervals between the eye marks are not the same due to unevenness between the eye marks due to shrinkage or other factors, a cutting position error may occur, and accurate cutting may not be possible at a predetermined position.

That is, in the conventional technology, the cutting position was found with one position counter, so the deviation in the interval between each eye mark was detected,
It was not possible to eliminate errors in the cutting position.

[Structure of the invention]

(Means for solving the problem) The present invention provides a steel strip between an eye mark detector and a cutting machine.
Provide as many position counters as the number of printed eyemarks.

(Function) By providing the same number of position counters as the number of eye marks between the eye mark detector and the cutter.

Perform one-to-one position counting with the eye mark.

As a result, each eye mark has a dedicated position counter, so even if the intervals between the eye marks are not the same, there will be no cutting position error.

(Example) An embodiment of the invention is shown in the drawings.

The steel strip 1 with the pattern printed thereon is fed out at a constant speed while being unwound from the coil shape by another drive device.

An eye mark 2 is printed on the steel strip 1 to serve as a reference for the cutting position. An eye mark detector 3 is provided to detect the passage of the eye mark 2.

The feed amount (movement position) of the steel strip 1 is detected by the pulse transmitter 4 @ The number of position counters 5 that count the feed amount of the steel strip 1 is the same as the number of eye marks 2 located ahead of the eye mark detector 3. establish.

A cutter drive device 6 and a cutter 7 are provided to cut the steel strip 1.

The cutting position is detected by position counters 51 to 5N, and a cutting command is output to the cutting machine driving device 6.

When the eye mark detector 3 detects the first eye mark 2, the feed amount of the steel strip 1 is input from the pulse transmitter 4 to the position counter 51. When the position counter 51 reaches a preset feed amount, it outputs a cutting command to the cutting machine drive device 6,
The cutting machine 7 cuts the steel strip 1 at a predetermined position, and the data of the 1-position counter 51 is reset. When the eye mark detector 3 detects the second eye mark 2 following the first eye mark 2, the feed amount is measured by the position counter 51 in the same way as above.
Next, the cutting position is input to the position counter 52 and the cutting position is counted.

When the eye mark detector 3 detects the third eye mark 2, the position counter 5N counts the cutting position and repeats this process.

〔Effect of the invention〕

As explained above, by using the present invention, the intervals between each eye mark can be adjusted according to the elongation and contraction of the steel strip due to temperature and reaction changes, misprinting of the eye marks, or deformation of the steel strip that occurs when the steel strip is wound into a coil. Even if the cutting position is not constant due to factors such as this, there will be no error in the cutting position, and the cutting can be performed with high precision at a predetermined position.

[Brief explanation of the drawing]

The drawing is a configuration diagram of a cutting position control device showing an embodiment of the present invention. 2... Eye mark 3... Eye mark detector 4... Pulse transmitter 5... Position counter, 6... Cutting machine drive device 7... Cutting machine agent Patent attorney Nori Chika Yudo Yamashita - White drawings - Procedural amendment (method) % formula % 1. Indication of the incident Patent Application No. 1983-315351 2. Name of the invention Cutting position control device for steel strip with eye mark 3. Amendment Patent applicant (307) Toshiba Corporation 4, Agent 1-1 Shibaura-chome, Minato-ku, Tokyo 105 %, 7 6 Contents of amendment 0) Page 6 of the specification of the present application In the third line, ``The drawing is'' should be corrected to ``Figure 1 is''. (2) Correct the drawing as shown in the attached sheet. that's all

Claims (1)

[Claims] A cutting machine that cuts a steel strip with an eye mark at a predetermined position from the eye mark, and a number of positions provided corresponding to the number of eye marks that exist between the eye mark detector and the cutting machine. A cutting position control device for a steel strip with an eye mark, comprising a counter and a cutting machine driving device for driving the cutting machine.