JP5454060B2 - Steel sheet distribution method and distribution apparatus - Google Patents

Description

The present invention relates to a technique for distributing steel plate such as plated steel sheet good Piler and defective piler.

  Tin-plated steel sheets used as can materials for food cans, beverage cans, etc. are usually plated on the surface of the steel strip with a plating line, and then the steel strip is cut to a predetermined length with a shearing line shearing machine. Manufactured. When the tin-plated steel sheet manufactured by such a method is plated, defects such as pinholes may occur on the surface of the steel strip. If the defects generated on the surface of the steel strip are left untreated, A tin-plated steel sheet having defects is shipped as a defective product. To prevent this, after inspecting the surface of the steel strip that has been subjected to surface treatment such as plating with a defect inspection device, and marking the surface of the steel strip with an inkjet device from the inspection result of the defect inspection device The marked defect mark is detected by a mark detection sensor provided on the punching line of the steel strip, and the defective portion of the steel strip is punched out based on the mark detection signal of this mark detection sensor. A technique to be excluded is disclosed in Patent Document 1, but if a defect mark marked on the surface of the steel strip is faint due to a cause such as running out of ink, the defect mark marked on the surface of the steel strip is detected with a mark detection sensor. Since it becomes difficult to detect, the technique disclosed in Patent Document 1 may not exclude the defective portion of the steel strip. There is a disadvantage that Jill.

  Therefore, the steel strip that has been subjected to the plating process is inspected by a defect inspection apparatus provided on the plating line of the steel strip, and a defect mark is formed on the surface of the steel strip based on the inspection result of the defect inspection apparatus. Marking with the marking device provided on the exit side, and then detecting the defect mark with the defect mark detection device provided on the shearing line that shears the steel strip to a predetermined length, and at the exit side of the defect mark detection device After a steel strip is sheared to a predetermined length by a provided shearing machine to obtain a surface-treated steel sheet, the obtained surface-treated steel sheet is classified into a non-defective product and a defective product by a sorting device based on the detection result of the defect mark detection device. And then sorting the surface-treated steel sheet to either a non-defective pillar or a defective pillar based on the sorting result of the sorting device by a sorter provided on the outlet side of the shearing machine, The marking result of the defective part by the marking device is read by the marking reader placed on the exit side of the marking device, the read marking result and the mark detection result of the defect mark detection device are collated, and the sorting device sorts the defective product. There has been proposed a technique for determining whether or not the treated surface-treated steel sheet is mixed in a non-defective pillar based on a matching result between a marking result and a mark detection result (see, for example, Patent Document 2).

JP-A-63-180323 JP 2002-357556 A

However, in the above-described technology, for example, when a failure or malfunction occurs in the sorter, the marking results of the marking device and the mark detection results of the defect mark detection device are correctly collated, and the defect mark detection device determines that the defect is defective. However, since the subsequent sorter does not operate correctly, there is a possibility that the surface-treated steel sheet selected as a defective product by the sorting device may be mixed into the non-defective pillar.
The present invention has been made in view of the above-described circumstances, and is a surface treatment that can detect that a surface-treated steel sheet determined to be defective by a quality determination device is mixed into a non-defective pillar due to a failure or malfunction of a sorter. It aims at providing the distribution method of a steel plate.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present invention inspects for the presence or absence of surface defects generated on the surface of the steel strip by a defect inspection device arranged on a processing line for processing the steel strip. At the same time, a marking device arranged on the exit side of the defect inspection device marks a defect mark on the surface of the steel strip based on the inspection result of the defect inspection device, and then shears the steel strip to a predetermined length. The defect mark detection device disposed on the shear line detects the defect mark, and the steel strip is sheared to a predetermined length by a shearing device disposed on the exit side of the defect mark detection device to obtain a steel plate. Then, the quality of the obtained steel plate is determined based on the detection result of the defect mark detection device, and then the steel plate is determined based on the determination result of the quality determination device for determining the quality of the steel plate. A method of distributing steel sheets to a non-defective and a non-defective pillar by a distribution machine arranged on the side, wherein the distribution results of the distribution machine to the non-defective pillar and the non-defective pillar are incorporated, and the imported distribution record is Checking with the determination result of the determination device or the detection result of the defect mark detection device, it is determined whether or not the steel plate determined to be defective by the pass / fail determination device is mixed in the non-defective product pillar , and the sorter 1 or more of the determination result of the pass / fail determination device, the detection result of the defect mark detection device, and the marking performance of the marking device together with position information from the steel strip tip of the defect mark Thus, the steel plate determined to be defective by the quality determination device is mixed into the non-defective pillar. It is characterized in that determining the location.

The invention according to claim 2 of the present invention, in the sorting process of the steel plate according to claim 1, to match the detection result of the determination results or the defect mark detecting apparatus of sorting results of the sorting machine and the diagnosis device in addition, the sorting performance of sorting machine against the marking performance of the marking device, is characterized in that the steel plate where the defect mark is marked to determine whether mixed in the good Piler .

According to a third aspect of the present invention, there is provided a defect inspection apparatus for inspecting the presence or absence of surface defects generated on the surface of the steel strip, and marking a defect mark on the surface of the steel strip based on the inspection result of the defect inspection apparatus. A marking device for detecting, a defect mark detecting device for detecting a defect mark marked on the surface of the steel strip, and the quality of the steel plate obtained by cutting the steel strip to a predetermined length. It is provided with the quality determination apparatus determined based on a detection result, and the distribution machine which distributes the said steel plate to either a non-defective pillar or a defective pillar based on the determination result of the said quality determination apparatus, It is described in Claim 1 or 2. The steel sheet is sorted by the method described above.

  According to the method for allocating the surface-treated steel sheet according to the present invention, it becomes possible to accurately detect whether or not the surface-treated steel sheet determined to be acceptable by the quality determining device has been properly distributed by the distribution device. It can be detected that the surface-treated steel sheet determined to be defective by the determination device is mixed into the non-defective pillar due to a failure or malfunction of the sorter.

It is a figure which shows one Embodiment which applied this invention to the manufacturing equipment of a tin-plated steel plate. It is a flowchart for demonstrating one Embodiment of this invention.

Hereinafter, a method for distributing surface-treated steel sheets according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an embodiment in which the present invention is applied to a tin-plated steel sheet manufacturing facility. The tin-plated steel sheet manufacturing facility shown in FIG. 1 includes a defect inspection device 11, a marking device 12, a payoff reel 13, and a payout amount. A measuring device 14, a defect mark detection device 15, a shearing device 16, a conveyor 17, a pass / fail determination device 18, a sorting device 19, a non-defective product pillar 20, a defective product pillar 21 and a defective product mixing determination device 22 are provided.

The defect inspection apparatus 11 inspects whether or not surface defects such as pinholes are present on the surface of the steel strip that has been subjected to surface treatment such as tin plating. (Not shown). Further, the defect inspection apparatus 11 is configured to output a defect detection signal when a surface defect generated on the surface of the steel strip is detected.
The marking device 12 marks a defect mark on the surface of the steel strip based on the defect detection signal output from the defect inspection device 11, and is disposed on the exit side of the defect inspection device 11. The marking device 12 is configured to output a marking position signal that informs the position of the defect mark (position from the tip of the steel strip) when a defect mark is marked on the surface of the steel strip.

The pay-off reel 13 pays out the steel strip S that has been surface-treated by a surface treatment line such as a tinning treatment line, and surface defects are present on the surface of the steel strip S delivered from the pay-off reel 13. In some cases, a defect mark is marked near the surface defect.
The payout amount measuring device 14 measures the payout amount of the steel strip S delivered from the payoff reel 13 and outputs a steel strip payout amount signal. The steel strip payout amount output from the payout amount measuring device 14 The signal is supplied to a defective product mixture determination device 22 described later.

The defect mark detection device 15 optically detects, for example, the defect mark marked on the surface of the steel strip S by the marking device 12, and is arranged on the entry side of the shearing machine 16. The defect mark detection device 15 is configured to output a defect mark detection signal when a defect mark is detected.
The shearing machine 16 shears the steel strip S delivered from the payoff reel 13 to a predetermined length to obtain a surface-treated steel sheet SP such as a tin-plated steel sheet. The surface-treated steel sheet obtained by the shearing machine 16 The SP is transported to the sorter 19 by the conveyor 17. The shearing machine 16 is configured to output a steel strip shearing signal each time the steel strip S delivered from the payoff reel 13 is sheared to a predetermined length.

  The quality determination device 18 determines the quality of the surface-treated steel plate SP obtained by the shearing machine 16 based on the detection result of the defect mark detection device 15, and a defect mark is marked on the surface of the surface-treated steel plate SP. A non-defective product determination signal is output when there is no defect, and a defective product determination signal is output when a defect mark is marked on the surface of the surface-treated steel plate SP.

  The sorter 19 sorts the surface-treated steel plate SP obtained by the shearing machine 16 into a non-defective pillar 20 and a non-defective pillar 21 based on the determination result of the pass / fail judgment device 18. A non-defective product distribution signal is output when the distribution is performed, and a defective product distribution signal is output when the surface-treated steel sheet SP is distributed to the defective product pillar 21.

  The defective product mixing determination device 22 determines whether or not the surface-treated steel plate SP determined to be defective by the pass / fail determination device 18 is mixed in the non-defective product pillar 20, and the determination result of the pass / fail determination device 18 and the sorting device 19 are determined. Has a storage device 23 for storing a distribution destination and the like. Further, the defective product mixing determination device 22 has a CPU (Central Processing Unit) 24, and this CPU 24 shows whether or not the surface treated steel plate SP determined to be defective by the pass / fail determination device 18 is mixed in the non-defective pillar 20. The determination is made according to the flowchart shown in FIG.

That is, when the defect mark is marked by the marking device 12 on the surface of the steel strip inspected for the presence or absence of surface defects by the defect inspection device 11 and the marking position signal is output from the marking device 12, the CPU 24 outputs from the marking device 12. The recorded marking position signal is stored in the storage device 23 as defect mark position information on the surface of the steel strip (see step S1 in FIG. 2).
When the steel strip S marked with the defect mark is paid out from the payoff reel 13 and the payout amount of the steel strip S paid out from the payoff reel 13 is measured by the payout amount measuring device 14, the CPU 24 of the payout amount measuring device 14. A measurement result is memorize | stored in the memory | storage device 23 as steel strip payout amount of the payoff reel 13 (refer step S2 of FIG. 2).

When the steel strip S paid out from the payoff reel 13 is supplied to the defect mark detection device 15 and a defect mark detection signal is output from the defect mark detection device 15, the CPU 24 detects the defect mark output from the defect mark detection device 15. The signal is stored in the storage device 23 as defect mark detection information of the steel strip S in correspondence with the steel strip payout amount of the payoff reel 13 (see step S3 in FIG. 2).
When the steel strip S delivered from the payoff reel 13 is sheared to a predetermined length by the shearing machine 16 and a steel strip shearing signal is output from the shearing machine 16, the CPU 24 outputs the steel strip shearing signal output from the shearing machine 16. And the count value is stored in the storage device 23 as the steel band shearing frequency in correspondence with the steel strip payout amount of the payoff reel 13 (see steps S4 and S5 in FIG. 2).

When the quality of the surface-treated steel plate SP obtained by shearing the steel strip S to a predetermined length by the shearing machine 16 is judged by the quality judgment device 18, the CPU 24 determines the judgment result of the quality judgment device 18 as the surface-treated steel plate SP. Is stored in the storage device 23 in correspondence with the number of times the steel strip is sheared (see step S6 in FIG. 2).
When the surface-treated steel plate SP obtained by the shearing machine 16 is sorted by the sorter 19 to either the non-defective pillar 20 or the defective pillar 21, the CPU 24 assigns the sorting destination of the surface-treated steel plate SP sorted by the sorting machine 19 to the steel. The data is stored in the storage device 23 in correspondence with the band shearing frequency (see step S7 in FIG. 2).

  When the distribution destination of the surface-treated steel plate SP is associated with the steel strip shear count and stored in the storage device 23 in this way, the CPU 24 stores the surface-treated steel plate SP that has been determined to be defective by the pass / fail determination device 18. 2 is determined by comparing the determination result of the pass / fail determination device 18 stored in the storage device 23 with the distribution result (distribution destination of the surface-treated steel plate SP) of the distribution device 19 (FIG. 2). Steps S8 and S9). Here, when the surface-treated steel plate SP determined to be defective by the pass / fail determination device 18 is assigned to the non-defective pillar 20, the CPU 24 transfers the surface-treated steel plate SP determined to be defective by the pass / fail determination device 18 to the non-defective pillar 20. It determines with having mixed (refer step S12 of FIG. 2).

  Further, when the surface-treated steel plate SP determined to be good by the quality determination device 18 is distributed to the non-defective pillar 20, the CPU 24 records the marking results of the marking device 12 stored in the storage device 23 (defect marks on the surface of the steel strip). (Position information) and the distribution result of the distribution device 19 (distribution destination information of the surface-treated steel plate SP) are collated, and whether the marking result of the marking device 12 and the distribution result of the distribution device 19 are correct, that is, distribution to the non-defective pillar 20 It is determined whether the surface-treated steel plate SP is a steel plate marked with a defect mark by the marking device 12 (see steps S10 and S11 in FIG. 2). Here, when the distribution destination of the steel plate marked with the defect mark by the marking device 12 is not the defective pillar 21, the CPU 24 determines that the surface-treated steel plate SP marked with the defect mark is mixed in the non-defective pillar 20 (FIG. 2 step S12). In addition, when the distribution destination of the steel plate marked with the defect mark by the marking device 12 is the defective pillar 21, the CPU 24 determines that the surface-treated steel plate SP marked with the defect mark is not mixed in the non-defective pillar 20. (See step S13 in FIG. 2).

  As described above, whether or not the surface-treated steel plate SP determined to be defective by the pass / fail determination device 18 has been properly distributed by the sorter 19 is collated with the determination result of the pass / fail determination device 18 and the sort result of the sorter 19. Thus, it is possible to accurately detect whether or not the surface-treated steel sheet SP that has been determined to be good or bad by the good or bad determination device 18 has been properly distributed by the sorter 19. Therefore, in one embodiment of the present invention described above, it can be detected that the surface-treated steel sheet SP determined to be defective by the quality determination device 18 is mixed into the non-defective pillar 20 due to a failure or malfunction of the sorter 19, Thereby, the surface-treated steel plate SP obtained by shearing the steel strip S to a predetermined length is distributed to the non-defective pillar 20 and the non-defective pillar 21 by the sorting machine 19, and then the surface-treated steel sheet is distributed to the non-defective pillar 20. Since it is not necessary to visually confirm that the SP is a good product one by one, it is possible to improve the efficiency of sorting work and reduce the burden on workers.

  Further, as in the above-described embodiment of the present invention, the marking results of the marking device 12 (defect mark position information on the steel strip surface) and the sorting results of the sorter 19 (sorting destination information of the surface-treated steel plate SP) are collated. By doing so, it can be detected that the surface-treated steel sheet SP marked with a defect mark is mixed into the non-defective product pillar 20 due to a failure or malfunction of the defect mark detection device 15 or the quality determination device 18.

  In the embodiment of the present invention described above, whether or not the surface-treated steel plate SP determined to be defective by the quality determination device 18 in steps S8 and S9 in FIG. The determination result and the distribution result of the distribution device 19 are collated, and the defect mark detection is performed to determine whether or not the surface-treated steel plate SP determined to be defective by the quality determination device 18 is mixed in the non-defective pillar 20. You may make it determine by collating the detection result of the apparatus 15, and the distribution performance of the distribution machine 19. FIG.

  Moreover, in one Embodiment of this invention mentioned above, in step S10, S11 of FIG. 2, whether the surface treatment steel plate SP in which the defect mark was marked was mixed in the non-defective pillar 20, and the marking results of the marking device 12 Although the determination is made by collating with the distribution results of the distribution device 19, steps S8 and S9 in FIG. 2 are sufficient for the purpose of detecting a failure or malfunction of the distribution device 19, and the steps in FIG. S10 and S11 are not necessarily required.

  Further, in the above-described embodiment of the present invention, in steps S8 and S9 of FIG. 2, collation between the sorting record of the sorter 19 and the judgment result of the pass / fail judgment device 18 (or the detection result of the defect mark detection device 15) is performed. Further, in steps S10 and S11 of FIG. 2, by comparing the sorting record of the sorter 19 with the marking record of the marking device 12 together with the position information from the steel strip tip stored in the storage device 23, a defective product is obtained. The position where the non-defective pillar 20 is mixed is determined (for example, it is determined which of the plurality of steel plates stacked on the non-defective pillar 20 is the position where the defective article is mixed from the bottom). For the purpose of judging only the presence or absence of contamination, position information from all these steel strip tips is not necessary, It is sufficient to take in the position information of.

  DESCRIPTION OF SYMBOLS S ... Steel strip, SP ... Surface treatment steel plate, 11 ... Defect inspection apparatus, 12 ... Marking apparatus, 13 ... Payoff reel, 14 ... Discharge amount measuring apparatus, 15 ... Defect mark detection apparatus, 16 ... Shearing machine, 17 ... Conveyor , 18 ... pass / fail judgment device, 19 ... sorter, 20 ... good product pillar, 21 ... defective product pillar, 22 ... defective product mixing judgment device, 23 ... storage device, 24 ... CPU.

Claims (3)

The steel strip is inspected for the presence or absence of surface defects generated on the surface of the steel strip by a defect inspection device arranged on a processing line for treating the steel strip, and the marking device arranged on the exit side of the defect inspection device. A defect mark is marked on the surface of the steel sheet based on the inspection result of the defect inspection apparatus, and then the defect mark is detected by a defect mark detection apparatus disposed on a shear line that shears the steel strip to a predetermined length. After obtaining the steel plate by shearing the steel strip to a predetermined length by a shearing machine arranged on the exit side of the defect mark detection device, the quality of the obtained steel plate is used as the detection result of the defect mark detection device. Based on the determination result of the quality determination device that determines the quality of the steel sheet and then determines the quality of the steel sheet, the steel sheet is transferred to the non-defective product and the defective product pie by the sorting machine arranged on the outlet side of the shearing machine. A method of allocating steel sheet distributed to over,
The distribution results of the distribution machine to the non-defective product pillar and the defective product pillar are captured, the acquired distribution performance is collated with the determination result of the pass / fail determination device or the detection result of the defect mark detection device, and the pass / fail determination device It is to determine whether or not the steel plate determined to be defective is mixed in the non-defective pillar ,
Position information from the steel strip tip of the defect mark, the distribution result of the distribution machine, the determination result of the quality determination device, the detection result of the defect mark detection device, and the marking result of the marking device. The steel sheet sorting method characterized by determining the position where the steel sheet determined to be defective by the quality determination device is mixed into the non-defective pillar by taking in together .   In addition to collating the sorting results of the sorting machine with the judgment results of the non-defective product judging device or the detection results of the defect mark detecting device, the sorting results of the sorting machine are matched with the marking results of the marking device, and the defect mark 2. The steel sheet sorting method according to claim 1, wherein it is determined whether or not a steel sheet marked with a mark is mixed in the non-defective pillar. A defect inspection device for inspecting the surface of the steel strip for the presence of surface defects, a marking device for marking a defect mark on the surface of the steel strip based on the inspection result of the defect inspection device, and a surface of the steel strip A defect mark detection device for detecting a marked defect mark, and a quality determination device for determining the quality of a steel plate obtained by cutting the steel strip into a predetermined length based on a detection result of the defect mark detection device; And a sorting machine that sorts the steel sheet into either a non-defective pillar or a defective pillar based on the determination result of the acceptance / rejection determination device, and the steel sheet is sorted by the method according to claim 1 or 2. Steel sheet sorting device.

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