JPH0330445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an information recording control device that records predetermined information on a portion where a flaw is detected on a product in an inspection line for products such as tinplate.

As mentioned above, in the part where a flaw was detected on the product,
Information is recorded (magnetized) and the magnetized portion is cut off in the next cutting process, but there is a need to improve the accuracy of the magnetized recording position.

[Conventional technology]

A conventional magnetization control method will be explained using diagrams. FIG. 2 is a block diagram illustrating a conventional example.

The tin plate is wound around a roller 2 that is rotated by a motor 1, and is wound around a roller 4 that is rotated by a motor 3. Sensors 5 are placed at positions a, b, and c on this moving path. , 6 and 7 are provided. On the other hand, a slit plate 8 is provided which operates in conjunction with the motor 1, and as the slit plate 8 rotates, light from a lamp 9 passes through the slit S. Each time this passing light L is detected by the detection unit 10, , pulse P is output.

The control unit 11 is provided with a total length counter 12, which measures the length of a product (for example, a tin plate) 13.
is a counter corresponding to the distance traveled from position X to Y, that is, the total length from the beginning to the end of the inspection distance. In other words, when the portion of the tin plate 13 at position X reaches position Y, the total length counter 12 driven by the pulse P counts out, and the count value G of this counter 12 This is data indicating the position of.

Sensors 5, 6, and 7 are sensors with different detection functions. For example, sensor 5 is a sensor that detects flaws that occur during plating, and sensor 6 is a sensor that detects scratches that occur when tin plate 13 is wound around roller 2. Make it.

When the tin plate 13 reaches position a, the sensor 5
When detecting a flaw, a detection signal A is sent to the processing section 14 of the control section 11. The processing section 14 learns the position of the sensor 5 from which the detection signal A is generated based on the count value G of the total length counter 12, performs predetermined processing, and then sends a write command W to the magnetic recording section 15. Upon receiving this, the magnetic recording section 15 writes predetermined magnetic information onto the tin plate 13.

The tin plate wound around the roller 4 in the above inspection process is subjected to a subsequent cutting process (not shown) in which defective portions (on which magnetic recording has been applied) are removed.

In FIG. 2, instead of providing the various sensors 5, 6, and 7, there is a recent tendency to adopt a method of installing a laser detection section 16. The laser detection unit 16 has a function of detecting flaws during plating of the tin plate 13 and scratches on the surface by irradiating the tin plate 13 with a laser beam. Therefore, a detection signal is emitted every time a flawed portion of the tin plate 13 passes under the laser detection unit 16, and there are multiple types of signals (for example, _D1
〜Dn).

[Problem that the invention seeks to solve]

After receiving multiple types of flaw signals H from the tinplate plate 13, the laser detection unit 16 performs processing according to each flaw signal H, and if it is determined that the flaw is harmful to the tinplate plate, Detection signals D ₁ to Dn will be emitted, but since the processing time until the detection signals D ₁ to Dn are emitted differs depending on the type and state of the flaw signal H, magnetic recording must be performed accurately at the location where the flaw is present on the product. There was a problem that it could not be done.

[Means for solving the problem] The above problem consists of an object to be inspected that moves at a predetermined speed in a fixed direction through an inspection section divided into a plurality of N zones, and an object to be inspected that is placed at a predetermined zone position within the zones. a detection unit that detects a flaw on the object to be inspected and outputs a detection signal according to the content of the flaw after a processing time corresponding to the content of the flaw; a recording unit that records flaw information at the position of the flaw on the object to be inspected; a control means that emits a control signal synchronized with the predetermined speed at which the object moves; an N-stage shift register that is shifted in synchronization with the movement of the test object; a full-length counter that advances a count value in synchronization with the movement of the test object in each zone by the control means; and an optional shift register of the shift register. a writing section capable of writing a signal in each stage of the detecting section, when the detecting section detects a flaw, reads out the count value at the time when the flaw is detected from the total length counter;
A detection signal corresponding to the content of the flaw on the object to be inspected is output to the writing section together with the read count value, and upon receiving this detection signal, the writing section reads the count value from the total length counter and A flaw signal is written into the stage of the shift register corresponding to the zone where the flaw on the object to be inspected is currently located based on the difference in count values, and when the output of the final stage of the shift register is the flaw signal, this flaw signal is detected. This is achieved by an information recording control method characterized in that flaw information is recorded on the object to be inspected by applying the information to the recording section.

[Effect]

In a scanning system for detecting flaws in a product such as a tin plate that moves at a constant speed, when a laser inspection section is used as an inspection means, the inspection section has a function of detecting multiple types of flaws.

In the present invention, after performing processing (analysis processing) according to the plurality of types of detection signals, predetermined information is written at the position where the flaw is located, but in accordance with the processing time of the plurality of types of processing means, Predetermined information can be correctly recorded at the location where the flaw has occurred.

〔Example〕

Hereinafter, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram illustrating one embodiment of the present invention. In Fig. 1, the total length between position X and Y is divided into n equal parts to provide n zones (ZONE) Z1 to Zn, and the number of bits corresponding to the zones _{Z1 to} Zn, that is, n bits. A shift register 17 is provided. Also, the bit position F ₁ ~ of this shift register
A writing section 18 for writing a digital signal of level "1" is provided in Fn.

Further, as the slit plate 8 rotates, the pulse P generated from the detection section 10 is sent to the pulse generation section 19 and drives the total length counter 12. Every time the pulse generator 19 receives a predetermined number of pulses P,
A pulse Q is generated, which causes the shift register 17 to shift to the right. That is, pulse Q
is such that one pulse (Q) is emitted each time the tin plate 13 passes through each zone (Z).
That cycle is selected.

In other words, when (n-1) pulses Q are supplied to the shift register 17, the shift register 1
The information in bit position F1 of ₇ is the rightmost bit position.
Reach Fn. Further, the laser detection section 16 has a function of detecting a plurality of types of flaws, and outputs a detection signal D. Here, the time for the laser detection unit 16 to detect a flaw varies depending on the type and condition of the flaw.

The flawed part of the tin plate 13 is the laser detection part 1
When reaching position 6, the laser detection section 16 first reads the total length counter G and stores it as G1. Thereafter, the laser detection unit 16 performs processing depending on the type and condition of the flaw (the processing time varies in various ways), and outputs a detection signal D if it is determined that the flaw is harmful to the tin plate. This detection signal D includes G1, which is information representing the position of the flaw.

When the writing unit 18 receives the detection signal D, it first reads the total length counter G and stores it as G2. next
By finding the difference between G2 and G1, tin plate 13
Find out to what zone the flaw is currently progressing. Then, a digital signal of level "1" is written into the bit position of the shift register 17 corresponding to the zone.

In this way, in the present invention, for the detection signal D,
The writing position to the bit position of the shift register 17 is selectively controlled in accordance with the undefined processing time.

The digital signal “1” is written by the writing section 18.
Bit position Fn is shifted sequentially by pulse Q.
When the detection unit 20 detects this signal “1”, it sends a write command W to the magnetic recording unit 15. As a result, magnetic recording on the tin plate 13 is performed.

As described above, in the present invention, a shift register is provided corresponding to the feeding position of the tin plate, and when different processing times are required for different types of detection signals, information is stored in the bit position of the shift register corresponding to the processing time. The system is designed to write information and perform magnetic recording based on this information.

〔Effect of the invention〕

The present invention is an object to be inspected (tinplate plate) in which a flaw has been detected.
This has the effect of improving the recording accuracy of magnetic recording for the position of the flaw (the position where the flaw exists).

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a conventional example. In the figure, 1 and 3 are motors, 2 and 4 are rollers, 5, 6, and 7 are sensors, 8 is a slit plate, 9 is a lamp, 10 and 20 are detection units, 11 is a control unit, and 1
2 is a full length counter, 13 is a tin plate, 14 is a processing section, 15 is a magnetic recording section, 16 is a laser detection section, 1
7 is a shift register, 18 is a writing section, and 19 is a pulse generating section.

Claims (1)

[Claims] 1. An inspection object that moves at a predetermined speed in a constant direction through an inspection section divided into a plurality of N zones, and a device that is placed at a predetermined zone position within the zone and detects flaws on the inspection object. a detection unit that outputs a detection signal according to the content of the defect after a processing time according to the content of the defect; and a detection unit that is arranged at the rearmost zone position of the detection unit arrangement zone and is located at the position of the flaw on the inspected object detected by the detection unit. a recording section for recording flaw information; a control means for emitting a control signal synchronized with the predetermined speed at which the object to be inspected moves; and a control means for shifting in synchronization with the movement of the object to be inspected in each zone. a full-length counter that advances a count value in synchronization with the movement of the object to be inspected in each zone by the control means; and a folding part, when the detecting part detects a flaw, reads the count value at the time when the flaw is detected from the total length counter,
A detection signal corresponding to the content of the flaw on the object to be inspected is output to the writing section together with the read count value, and upon receiving this detection signal, the writing section reads the count value from the total length counter and A flaw signal is written into the stage of the shift register corresponding to the zone where the flaw on the object to be inspected is currently located based on the difference in count values, and when the output of the final stage of the shift register is the flaw signal, this flaw signal is detected. An information recording control device characterized in that the information recording control device records flaw information on the object to be inspected by applying the information to the recording section.