JPS63112358A - Meandering corrector for strip - Google Patents

Abstract

PURPOSE:To make the influence of bending in a strip itself smaller as well as to perform an accurate meandering correction, by setting up more than two units of a meandering corrector at the upstream side of an apparatus requiring that a meandering quantity of the strip becomes minimized, at the specified intervals. CONSTITUTION:An upstream side meandering corrector 3 is controlled by a signal of a meandering quantity detector 4 and a signal of a position detector detecting an operated variable of a downstream side meandering corrector 5. That is to say, the upstream side meandering corrector 3 corrects the position of a strip entering into the downstream side meandering corrector 5 to almost the center, while it has such an action as resetting an operating position of the downstream side meandering corrector 5 to the center. The downstream side meandering corrector 5 further corrects the rest of the meandering quantity corrected by the upstream side meandering corrector 3 at the previous stage, so that the required correction value is good enough a smaller quantity than that to be required for the upstream side meandering corrector 3. Therefore, the meandering corrector 5 can be set up in a spot proximate to a side trimmer 7 so that the meandering quantity at this side trimmer 7 can be made smaller to the utmost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a strip meandering correcting device that is required to have an extremely small amount of meandering, such as a side trimmer, in a continuous strip processing line.

[Conventional technology]

Conventionally, as a meandering correction device for continuous processing lines,
As shown in Japanese Patent No. 6-28151, pressure is applied from both sides of the strip by a pair of upper and lower pressure rollers, and the meandering amount is detected by a meandering amount detector provided on the upstream or downstream side of this pressure roller. There is a device that applies a signal to the pressure roller to adjust the pressure force of the roller and correct meandering, and
As shown in Japanese Patent No. 19246, there has been proposed a sensor that detects the meandering of the strip and a roller that passes through the strip, and a sensor that corrects the meandering by moving the roller back and forth in the traveling direction of the strip based on this signal.

[Problem that the invention seeks to solve]

In the conventional meandering correction device described above, the distance between the roll on the steering roll and the rolls located upstream and downstream of other strips is adjusted to prevent the meandering of the strip in order to suppress the stress generated in the strip when the roll is tilted to below a certain value. Because of certain limitations depending on the amount and width of the strip, it has been difficult, for example, to place the steering roll close to the side trimmer where the amount of meandering should be extremely small. In addition, generally in a meandering correction device, the meandering f of the strip is
- Since the correction is made at the position of the meandering detector located downstream of the steering roll, if the distance between the steering roll and the side trimmer is wide, accurate meandering correction will not be performed due to the influence of the curvature of the strip itself. There was a problem that there was no.

In addition, in a method in which the meandering is corrected by adjusting the pressing force, there is a risk that flaws may occur in the strip because the strip is pressed by a roll.

[Means for solving problems]

Two meandering correction devices 3.5 each consisting of a roll, a frame that supports the roll, and an operation cylinder 8.9 that operates the roll are installed on the upstream side of the equipment that requires the amount of meandering of the strip 1 to be minimized. The above are arranged at predetermined intervals. A meandering amount detector 4 for detecting the meandering amount of the strip 1 is disposed downstream of the meandering correcting device 3 in the upstream meandering correcting bag W3 of the meandering correcting devices 3 and 5. A meandering amount detector 6 for detecting the meandering amount of the strip 1 is also disposed downstream of the downstream meandering correction device 5 installed. A position detector 10 is provided.

[Effect]

A set of meandering correction devices 5 is provided upstream of the equipment in which the amount of meandering of the strip should be extremely small, and the meandering correction device 5
Another set of meander correction devices 3 is provided on the upstream side of the meandering correction device 3. The upstream meandering correction device 3 is controlled by a signal from a meandering amount detector 4 installed downstream of the meandering correction device 3 and a signal from a position detector 10 that detects the operating amount of the downstream meandering correction device 5.

That is, the upstream meandering correction device 3 has the function of correcting the position of the strip 1 entering the downstream meandering correction device 5 to approximately the center, and also returning the operating position of the downstream meandering correction device 5 to the center. Downstream meandering (-Since the main device 5 further corrects the remainder of the meandering amount corrected by the upstream meandering correction device 3 in the previous stage, the required correction amount is smaller than the correction amount required by the upstream meandering correction device 3. Therefore, since the meandering correction device can be installed close to the side trimmer, the amount of meandering in a part of the side trimmer can be made extremely small.

〔Example〕

Fig. 1 is a side view of an embodiment of the present invention in which two meandering correction devices are arranged upstream of a side trimmer, Fig. 2 is a view taken along arrow A-A in Fig. It is a BB arrow view of a figure.

In FIG. 1, the strip 1 is the deflector roll 2.
It is guided to the upstream side meandering correction device 3 via. In the upstream meander correction device 3, deflector rolls 11, 12 are arranged on a frame 13 at predetermined intervals, and an operating cylinder 8 for operating the frame 13 is connected to a predetermined position of the frame 13.

A detector 4 for measuring the amount of meandering is arranged on the downstream side, and the meandering correction device 3 on the upstream side
, frame 13, operation cylinder 8 and meandering amount detector 4
It is made up of.

When meandering occurs in the strip 1, the meandering amount detector 4 detects the amount of meandering, and this signal is applied to the operation cylinder 8 of the upstream meandering correction device 3 to operate the upstream meandering correction device 3 to correct the meandering of the strip 1. Fix it. Next, the downstream side meandering correction device 5 is disposed immediately before the side trimmer 7, and is composed of a deflector roll 14, a frame 15 that supports the deflector roll 14, an operation cylinder 9 that operates the frame 15, and a deflector roll 14. The meandering amount detector 6 is placed downstream of the meandering amount detector 6. Moreover, the downstream side meandering correction device 5
A position detector 10 for detecting the position of the correction device 5 is disposed. The downstream meandering correction device 5 detects the amount of meandering with the meandering amount detector 6, and transmits the signal to the downstream meandering correction device 5.
to the operating cylinder 9 to correct the meandering. At this time, the position of the downstream meandering correction device 5 is detected by the position detector 10 disposed in the downstream meandering correction device 5, and this signal is given to the operation cylinder 8 of the upstream meandering correction device 3 to correct the downstream meandering correction device. Operate the device 5 so that it is located in the center of the strip 1. That is, the upstream meandering correction device 3 corrects the meandering that has occurred upstream of the upstream meandering correction device 3, and at the same time adjusts the position of the downstream meandering correction device 5 so that it is located at the center of the strip 1.

〔Effect of the invention〕

As explained above, in the present invention, two or more conventionally used meandering correction devices are arranged in succession, the remaining control of the upstream meandering correction device is corrected again by the downstream meandering correction device, and the downstream meandering correction device is Since the amount of operation of the correction device is limited within a certain range by the upstream meandering correction device, the downstream meandering correction device can be placed immediately before equipment that requires extremely small meandering amount, and the strip itself The influence of bending can be extremely minimized. As described above, the equipment effects of the present invention are very large.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the equipment arrangement of the embodiment, FIG. 2 is a plan view of the downstream side meandering correction device and the side trimmer section, and FIG. 3 is a plan view of the upstream side meandering correction device. 1st strip, 2; deflector (coal, 3
: Upstream meandering correction device, 4: Meandering amount detector, 5: Downstream meandering correction device, 6: Meandering amount detector, 7; Side trimmer, 8: Operation cylinder, 9: Operation cylinder, 1
0: Position detector, 11.12° 14: Deflector roll, 13. iss frame.

Claims (1)

[Claims] In equipment that continuously processes strip (1), a roll is provided on the upstream side of the equipment that requires minimal meandering of strip (1), a frame that supports the roll, and a cylinder (8) that operates the roll. (9) and meandering amount detectors (4) and (6) that detect the amount of meandering (
3) Two or more units of (5) are arranged at a predetermined interval, and the downstream side meandering correction device (5) is provided with a position detection device (10) for detecting the position of the downstream side meandering correction device (5). The signal of the position of the downstream side meandering correction device (5) detected by the detector (10) and the meandering amount detector (4) of the upstream side meandering correction device (3)
) A strip meandering correction device, characterized in that the upstream meandering correction device (3) is operated by the signal.