JPH01266919A - Method for degreasing, inspecting, slitting metal bar continuously - Google Patents

Abstract

PURPOSE:To improve the quality and to reduce the working cost by giving a slowing function to an uncoiler, a shut-down function to a bridle roll and its followers and treating a defective part while traveling a metal bar in a degreasing tank at a low speed. CONSTITUTION:The slowing function is added to the uncoiler 1 and, further, a shut-down function is given to the bridle roll 5, a cutter 7, a pinch roll 8, a tension generator 9 and an recoiler 10. When an optical detector 4 detects a detective part of the metal bar, the bridle roll 5 and its followers are shut down suddenly, the uncoiler is changed to slow motion to accumulate the metal bar (a) in an accumulator 6. In the meanwhile, the defective part is treated on a retest table 11 and after it is finished, the roll 5 and its followers are restarted. Since the metal bar (a) is moved slowly in the degreasing tank, stop marks, etc., can be prevented from occurring and the quality can be improved. The working cost can be reduced because working is performed continuously.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for continuous degreasing, inspection, and slitting of ferrous and non-ferrous metal strips, which includes a tandem degreasing process, surface inspection process, and slitting process for metal strips. .

(Prior Art) In general, as a method for degreasing, inspecting, and slitting ferrous and non-ferrous metal strips, as shown in Fig. 2, a metal strip (a) fed out from an uncoiler (1) is passed through a degreasing tank (2). The rolling oil etc. adhering in the previous process is removed, and then the degreasing liquid is removed from the surface through a wiper (3) to avoid the occurrence of stop marks due to the degreasing liquid, and the degreased metal strip (ao) is passed through a recoiler (10). ). Next, as shown in Fig. 3, the degreased metal strip (AO) is fed out from an uncoiler (1), passed through an optical surface inspection machine (4) to record surface defects, and then passed through a bridle roll (5) and a cutter (7). ), pinch rolls (8) and loop pits 1 to (12) to slitter the metal strip (AO), and then passed through a tension generator (9) and wound up on a recoiler (10). Uncoiler
(1), bridle roll (5), cutter (7), and pinch roll (8) control the running of the metal strip at a certain level so that the metal strip (ao) does not come into contact with others in the loop pit (12). It only has a control function to maintain its position.

In this way, in the metal strip slitting line, the degreasing process to remove rolling oil etc. adhering in the previous process is separated from the slitter process to avoid the occurrence of degreasing stop marks, and optical surface inspection is performed in the slitter process to eliminate defects. Depending on the degree of damage, the line is stopped and visual re-inspections and treatments are carried out to ensure the final surface quality.

On the other hand, in a line that combines the degreasing process and the slitter process in tandem, the optical surface inspection is recorded during the slitter process, and after winding without stopping the line, defective coils are re-inspected in the next inspection process. There is.

(Problems to be Solved by the Invention) In the inspection line of the slitter process, it is necessary to stop the line in order to confirm the degree of defects and take measures to ensure surface quality.

However, in a line that combines the degreasing process, inspection process, and slitter process in tandem, if the line is stopped, the UB oil runs out and a new surface defect called a stop mark occurs at the wiper.

For regular products that require surface quality as a result,
It was not possible to tandem the degreasing process with the inspection and slitter process.

[Means for Solving the Problems] In view of this, the present invention has been developed as a result of various studies and a method for continuous degreasing, inspection, and slitting of metal strips in which a degreasing process, a surface inspection, and a slitting process are carried out in tandem.

That is, the present invention provides a slitter method in which a metal strip fed out from an uncoiler is sequentially passed through a bridle roll and a loop pit to be slittered, and then wound onto a recoiler through a tension generator. A liquid wiper, an accumulation rate, and an optical surface inspection machine were installed in sequence, a re-inspection table was placed between the pinch roll and the loop pit, a slow motion function was added to the uncoiler, and a stop function was added after the bridle roll. The bridle roll and subsequent parts are stopped so that the defective part of the metal strip detected by the surface inspection machine is stopped on the re-inspection table, and the metal strip in the degreasing tank is stopped by the uncoiler and accumulator while the defective part is treated. The metal strip is accumulated in the accumulation rate by running at low speed without any trouble, and when the treatment of the defective part is completed on the re-inspection table, the bridle roll and subsequent parts are restarted, and the uncoiler is accelerated to a steady state. It is something to do.

[For production]

The present invention is a slitter method that combines a degreasing process, a surface inspection process, and a slitter process in tandem.Even if the cutter is stopped, the metal strip to be opened in the degreasing process is not stopped, but the metal strip is moved slowly and placed in the accumulation rate. By accumulating the slitter, the occurrence of degreasing stop marks can be prevented, and during this time the bridle roll and subsequent parts can be stopped to re-inspect and treat surface defects on the metal strip of the slitter. That is, based on the detection results of the optical surface inspection machine, the bridle roll and subsequent parts are suddenly stopped so that the defective part of the running metal strip is located on the re-inspection table behind the cutter, and the surface of the metal strip that has been slittered and stopped is immediately stopped. During the re-inspection and treatment of metal strips, only the degreasing process of the metal strips is slowed down without stopping and accumulated in the accumulation rate.

〔Example〕

As shown in Figure 1, take the uncoiler (1)
10), there is a degreasing tank (2), a degreasing liquid wiper (6 = (3)), an accumulation rate (6), an optical surface inspection machine (4)
), a fried roll (5), a cutter (7), a pinch roll (8), a re-inspection table (11), an exit loop pit 1 to (12), a tension generator (9), and an uncoiler. (1) with a slow motion function, bridle roll (5), cutter (7), pinch roll (8)
), the tension generator (9), and the recoiler (10) are equipped with a sudden stop function. In this way, the uncoiler (1)
Pass the metal strip (a) fed out into the degreasing tank (2),
Remove the degreasing liquid using the wiper (3). Subsequently, the degreased metal strip (ao) is passed through accumulators 1 to (6) and an optical surface inspection machine (4), and the surface of the running metal strip (ao) is continuously inspected and recorded. This is fed to a cutter (7), which slits the metal strip (AO) through a pinch roll (8), passes it over a re-inspection table (11), accumulates it in a loop pit (12), and slits it into a metal strip (AO) through a tension generator (9). ) and wind it up on the roller (10).

When a defective part is detected by the optical surface inspection a (4) in this way, the uncoiler (1) is gradually stopped at the same time as the bridle roll (5) and subsequent parts are suddenly stopped so that the defective part stops on the re-inspection table (11). The metal strip (a) in the degreasing tank (2) is moved slowly without stopping to accumulate in the accumulation trays 1 to (6). During this time, the defective portion of the metal strip (a') on the re-inspection table (11) is visually re-inspected and determined and dealt with. Once the re-inspection judgment procedure is completed, restart the bridle roll (5) and onward again.
At the same time as restarting the slitter, the uncoiler (1) is accelerated to a steady state. As a result, bridle roll (5
Even if the steps after ) are stopped, the metal strip (a) passes through the degreasing liquid wiper at a low speed, thereby preventing the occurrence of stop marks and providing a surface with high quality.

(Effects of the Invention) As described above, according to the present invention, even though the degreasing process, the inspection process, and the slitting process are performed in tandem, products with high surface quality can be obtained, and processing costs and lead time can be significantly reduced. It has remarkable industrial effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the slitter method of the present invention, FIG. 2 is an explanatory diagram showing an example of a conventional degreasing process, and FIG. 3 is an explanatory diagram showing an example of a conventional slitter process. 1, uncoiler 2, degreasing tank 3, degreasing liquid wiper 4, optical surface inspection machine 5, bridle roll 6, accumulators 1 to 7, cutter 8, pinch roll 10, recoiler 11, re-inspection table 12, loop pit a, Metal strip a', degreased metal strip

Claims (1)

[Claims] (1) In the slitter method, in which the metal strip fed out from the uncoiler is sequentially passed through a bridle roll, a cutter, a pinch roll, and a loop pit to slitter it and then wound onto a recoiler through a tension generator, there is a degreasing tank and a degreasing tank between the uncoiler and the bridle roll. A liquid wiper, an accumulation rate, and an optical surface inspection machine were installed in sequence, a re-inspection table was placed between the pinch roll and the loop pit, a slow motion function was added to the uncoiler, a stop function was added after the bridle roll, and an optical surface inspection machine was installed. The bridle roll and subsequent parts are stopped so that the defective parts of the metal strip detected by the surface inspection machine are stopped on the re-inspection table, and the metal strip in the degreasing tank is stopped by the uncoiler and accumulator while the defective parts are treated. The metal strip is accumulated in the accumulation rate by running at low speed without any trouble, and when the treatment of the defective part is completed on the re-inspection table, the bridle roll and subsequent parts are restarted, and the uncoiler is accelerated to a steady state. Continuous degreasing, inspection, and slitting method for metal strips.