JP2000225512A - Side trimmer device - Google Patents

Abstract

(57) [Problem] To provide a side trimming device capable of stably performing a side trimming process on a metal plate without causing trimming defects. SOLUTION: This is a side trimmer device provided with a steering roll 3 for correcting a supply deviation of a metal plate in front of a side trimmer main body 1, and detects a position of the supplied metal plate and sends a correction signal to the steering roll 3. The photosensors 8 and 9 that output
It was installed on a step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side trimming device capable of stably trimming a steel plate or any other metal plate without causing trimming defects.

[0002]

2. Description of the Related Art For example, in a line for pickling a metal sheet such as a coil made of a hot-rolled steel sheet, or in a skin pass line for reducing the pressure by several percent, a product having a predetermined width is cut by cutting both sides of the steel sheet. Is performed. This trimming process is performed by a cutting machine called a side trimmer device in which a pair of cutting blades for holding and cutting the steel plate from above and below are provided on both side portions of the side trimmer main body. If the supply shifts, trimming failure will occur.
A sensor is attached about 3 m ahead, and a steering roll that corrects the deviation of the supply of the steel sheet by the signal from this sensor is installed, so that the steel sheet is supplied with high accuracy.

However, a meandering phenomenon called a camber may be present at the top and the end of the hot-rolled steel sheet. In this case, if the sensor detects a normal value and continues to supply the steel sheet, the sensor will not operate. A large displacement will occur while moving between the cutting blade and the cutting blade. For example, assuming that the camber is 8 mm per 1 m in length, even if the width deviation at the sensor section is 1 mm, a further 12 mm deviation occurs at the cut section 1.5 m ahead, resulting in a total deviation of 13 mm. As a result, there is a problem in that the trim margin on one side is eliminated in the side trimmer apparatus, and a trimming defect may occur. In recent years, a reduction in trim margin has been required with an improvement in yield, and therefore, it has become important issues to solve a trimming failure and to perform a trimming process reliably with a small trim margin.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and can stably side trim a metal plate without causing trimming defects. The present invention has been completed for the purpose of providing a side trimmer device capable of performing economical trimming with good yield.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, a side trimmer device according to the present invention is provided with a side trimmer provided with a steering roll for correcting a supply deviation of a metal plate in front of a side trimmer body. The apparatus is characterized in that photosensors for detecting a position of a supplied metal plate and outputting a correction signal to the steering roll are provided in two stages in front and rear with respect to a traveling direction of the metal plate.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the figure, 1 is a side trimmer main body, 2 is a steel plate 30 supplied to the side trimmer main body 1.
And a pair of upper and lower cutting blades arranged so as to sandwich the cutting blade. The cutting blades 2 are provided on the left and right sides with respect to the traveling direction of the steel plate 30, and 3 is provided in front of the side trimmer main body 1 and supplied. This is a steering roll that corrects the supply deviation of the steel sheet to be supplied. This steering roll 3
As shown in FIGS. 2 and 3, the upper and lower two rolls 5 a for transporting a steel plate are mounted on a steering frame 4, which is entirely swingable left and right with a suspension 6 in the upper center as a fulcrum. 5b are attached in parallel, and a lower portion of the side surface of the steering frame 4 is provided with a servo motor 7b.
The steering frame 4 is connected to the tip of a screw shaft of the
It is configured to swing left and right around the fulcrum.

A first-stage photosensor 8 for detecting the position of the steel plate 30 to be supplied and outputting a correction signal to the steering roll 3 is provided between the side trimmer body 1 and the steering roll 3. 3
A second-stage photosensor 9 that outputs a correction signal to the steering roll 3 based on the detection signal of the first-stage photosensor 8 is installed at both sides of the front and rear two stages with respect to the traveling direction of the steel plate 30. The control corrects the displacement of the steel plate 30 to be supplied to several mm, and furthermore, based on the detection signal of the photosensor 9 of the second stage even when the displacement becomes large again at the loading portion of the side trimmer main body 1 by the camber. Under the control of the steering roll 3, the displacement of the steel plate 30 is corrected again to several mm, and an appropriate trimming process is performed.

The photosensors 8 and 9 are installed at a substantially middle portion between the steering roll 3 and the side trimmer main body 1 by mounting the first-stage photosensor 8 on the second stage.
It is preferable to install the photosensor 9 of the step at the entrance of the side trimmer main body 1 because the trimming process can be performed while correcting the displacement amount of the steel plate 30 to a minimum.
Further, since the steering roll 3 is controlled based on two signals from the photosensors 8 and 9, hunting may occur. To prevent this, a correction signal from the first-stage photosensor 8 is required. It is preferable that the response cycle of the steering roll 3 based on the control signal is set earlier than the response cycle of the steering roll 3 based on the correction signal from the photosensor 9 in the second stage.

The type of the photosensors 8 and 9 does not matter, but a correction signal is output to the steering roll 3 by detecting the position of the steel plate 30 supplied at the entrance of the side trimmer body 1. The illustrated photosensor 9 in which the second-stage photosensor 9 is installed is shown in FIG. 4 as a pair of upper and lower emitters and receivers, one of which is a photohead emitter 9a and the other is a photohead receiver 9b. So that the output signal from the photo sensor 9 is input to the arithmetic unit 10 and processed immediately, and the servo motor 7
Is operated, and the cascade control of the steering roll 3 is performed so that the trajectory of the steel plate 30 is always corrected to the normal position. As shown in FIG. 5, the photo sensor 9 is attached to the side trimmer main body 1 by a bracket 1a.
Is set so as to be on the extension of the cutting line by the cutting blade 2, thereby ensuring accurate recognition of both sides of the steel plate 30. When a photosensor having a relatively small detection area is used as the photosensor 9, if the detection area of the photosensor 9 is on an extension of the cutting line by the cutting blade 2, the center is on the extension of the cutting line by the cutting blade 2. It may be set further shifted to the width end of the metal plate.

The photosensor 8 configured as above detects the position of the supplied steel plate 30 and outputs a correction signal to the steering roll 3, and similarly outputs a correction signal to the steering roll 3. Since the output second-stage photosensors 9 are installed in two stages before and after with respect to the traveling direction of the steel plate 30, even if the steel plate 30 has a camber, it moves between the sensor and the cutting blade as in the related art. The steel plate 30 is supplied to the cutting blade 2 while being controlled by the steering roll 3 so as to be always within a predetermined range without causing a large gap therebetween. Further, when the supply position of the steel plate 30 is shifted, the calculation is immediately performed by the arithmetic unit 10 based on the output signals from the photosensors 8 and 9, and the steering roll 3 is turned so that the steel plate 30 is supplied at the optimum position. Since the steel plate 30 is swung, the trajectory of the steel plate 30 is immediately corrected, so that no large displacement occurs. As a result, the trimming process can be economically performed with a small amount of trim and with good yield.

Although the above description has been made only on the case where the steel sheet is trimmed, the object which can be treated by the present invention is substantially any of various steel sheets, aluminum sheets, aluminum alloy sheets, copper sheets, copper alloy sheets and the like. Any plate made of metal may be used, and resin, oxide, nitride,
It goes without saying that the metal plate may include a carbide or the like.

[0012]

The distance between the center of the steering roll and the first-stage photosensor is 1500 mm, and the distance between the first-stage photosensor and the second-stage photosensor is 10 mm.
00mm, the distance between the photosensor in the second stage and the central axis of the cutting blade in the side trimmer main body 1 was set to 500mm, and a 1200mm wide, 3.2mm thick steel plate was trimmed. The meandering amount in the second photosensor is 2mm at the maximum and the meandering amount in the cut part of the side trimmer body is 5mm at the maximum, and the side trim margin of 6mm on one side is seen. It was confirmed that the side trimming process could be performed accurately. On the other hand, when the same side trim processing was performed by an apparatus in which only the first-stage photosensor was installed, the meandering amount in the cut portion of the side trimmer main body was a maximum of 15
mm, and side trim processing is not possible with a side trim margin of 6 mm on one side, and it is necessary to secure a side trim margin of 15 mm or more, confirming the economic efficiency of the present invention.

[0013]

As is apparent from the above description, according to the present invention, a side plate can be stably trimmed on a metal plate such as a steel plate without causing a trimming defect, and moreover, a half of the conventional one can be achieved. There is an advantage that the trimming process can be economically performed with the following small trim amount. Therefore, the present invention greatly contributes to industrial development as a side trimmer device that has eliminated the conventional problems.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view showing a steering roll.

FIG. 3 is a perspective view showing a steering roll.

FIG. 4 is a side view showing a second-stage photosensor.

FIG. 5 is a plan sectional view showing a second-stage photosensor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side trimmer main body 2 Cutting blade 3 Steering roll 8 First stage photo sensor 9 Second stage photo sensor 30 Steel plate

Continued on the front page (72) Inventor Hiroyuki Asano 5-3 Tokai-cho, Tokai City, Aichi Prefecture Inside Nippon Steel Corporation Nagoya Works (72) Inventor Kunihito 5-3 Tokai-cho, Tokai City, Aichi Prefecture New Japan (72) Inventor Hiroyuki Tsutsui 5-3 Tokai-cho, Tokai City, Aichi Prefecture F-term in Nagoya Works, Nippon Steel Corporation (Reference) 3C039 CB23

Claims (4)

[Claims] 1. A side trimmer device provided with a steering roll for correcting a supply deviation of a metal plate in front of a side trimmer main body, wherein a position of the supplied metal plate is detected and a correction signal is sent to the steering roll. A side trimmer device, wherein photosensors for outputting an image are provided in two stages before and after in a traveling direction of the metal plate. 2. A first-stage photo sensor is installed at a substantially intermediate portion between a steering roll and a side trimmer main body.
The side trimmer device according to claim 1, wherein the photosensor of the stage is provided at an entrance of the side trimmer main body. 3. The side trimmer device according to claim 2, wherein the second-stage photosensor provided at the entrance of the side trimmer main body is set on an extension of a cutting line by the cutting blade. 4. A response period of a steering roll based on a correction signal from a first-stage photosensor is set to be earlier than a response period of a steering roll based on a correction signal from a second-stage photosensor. The side trimmer device according to claim 1, 2 or 3.