JPH0780089B2 - Side trimmer device - Google Patents

Description

The present invention relates to a side trimmer device for metal strips.

[Prior Art] The conventional side trimmer device is 300 to 3 of "Theory and practice of rolling equipment" (Gihodo Co., Ltd., issued August 5, 1937).
As introduced on page 01, upper and lower round blades are provided at predetermined positions on both sides of the metal band pass line, and both sides of the metal band are cut off by the round blades to finish to a predetermined size.
It is conveyed to the next process by the roller table. At the same time, the scrap hoop that was cut off is guided from the opening between the upper and lower round blades and the table roll on the exit side to a winding device such as a borer through a perspective shout provided below it. It is getting taken.

[Problems to be solved by the invention]

By the way, the scrap hoop generated by cutting the widthwise both sides of the metal strip with the upper and lower round blades is slightly different depending on the thickness, width, etc., but when performing high-speed cutting work of 1550 m / min or more. Is
A so-called flying phenomenon occurs in which the tip end portion receives lift force, travels in flight together with the floating metal strip, passes right above the opening portion, and reaches the table roll. Especially after changing the width, if the scrap hoop before change and the scrap hoop separated from the scraper generate a flying phenomenon, the tip part is often wound around the table roll. Hit the bottom of the metal strip of
Scratches, scratches, blemishes, etc. are generated, which significantly deteriorates the quality of the metal strip and greatly reduces the yield.

In addition, it takes a lot of labor and time to release the winding, and it is necessary to suspend the line for a long time, resulting in a significant decrease in productivity. As a result, in order to prevent this flying phenomenon, it was unavoidable to operate by low-speed running excision work of less than 150 m / min.

The present invention has been made to solve the above problems,
Provided is a side trimmer device capable of preventing flying of a scrap hoop.

[Means for solving problems]

The technical means of the present invention for solving the above-mentioned problems is to cut both side portions in the width direction of a metal strip running on a pass line in a predetermined width dimension by running and cutting with a pair of upper and lower round blades. The scrap hoop is guided and wound from the opening between the upper and lower round blades and the table roll for transporting the metal plate provided on the delivery side thereof to the winding device via the scrap hoop deflecting plate and chute below it. In the side trimmer device to take,
Next to the deflection plate of the scrap hoop, immediately below the deflection plate, a reversing roll circumscribing and rotating around the table roll is installed.

[Work]

The scrap hoop deflector configured as described above collides with the flying scrap hoop and deflects it downward, or collides with the deflector hoop and deflects downward toward the reversing roll provided directly below. By guiding the scrap hoop further downward by the reversing roll, the scrap hoop is prevented from directly colliding with the table roll or the like, or the entrance winding is prevented. .

This reversing roll is externally attached to the outer peripheral surface of the table roll at least directly below the pass line on both sides of the table roll, or is joined to the rotary shaft of the table roll by a rotation transmission mechanism such as a gear or a belt, or independently. By rotating the table roll in a direction opposite to that of the table roll, the scrap hoop deflected downward by the deflecting plate is smoothly guided downward in the deflecting roll, It is to be wound up by guiding it to a winding device such as a borer via the.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view of a side trimmer line before improvement, which is a prerequisite for the present invention. The side trimmer device 1 includes a looping device (not shown) on the outlet side of the pickling process of the hot rolling strip 20. It is installed between the coiler 21 and the coiler 21, and the upper and lower circular blades 2a and 2b are driven to rotate by the winding movement of the strip 20 to cut the width of the strip 20 into a predetermined width. In the figure, 24a to 24f are bride rolls for tension, 25a to 25f are idle rolls for holding them, 27, 28
Is an idol roll for diversion, which is installed before and after the pit 26, 29a
29f is a pinch roll, and 30 is an up cut shear that cuts the strip 20 in the width direction.

The side trimmer device 1 is provided at a predetermined position on the entrance side of the coiler 21 of the pass line of the strip 20, and upper and lower round blades 2a and 2b for cutting the running distance are provided on both sides in the width direction, respectively. On the exit side of the lower round blade 2b, there is provided a fixed guide 3 having a U-shaped cross section for guiding the scrap hoop 20a, and a tilting shout 4 extending from the lower side to the front side, and further on the exit side of the tilting shout 4, Take-up drum 5a and cylinder mechanism 5b
A borer 5 including a press roller 5c that can be driven to move up and down is provided. In addition, the upper and lower round blades 2a, 2
At the front end position of the opening 6 provided immediately below the pass line on the outlet side, a table roll 7 for conveying the strip 20 finished to have a predetermined width is provided, and on the inlet side of the table roll 7, A scrap hoop deflecting plate 8 having a contact surface 8a inclined downward is attached.

FIG. 2 is an explanatory view of a main part showing an improvement of the present invention, in which a reversing roll 9 driven by pressure contact with a table roll 7 is provided below the deflecting plate 8 of the scrap hoop.

The scrap hoop deflecting plate 8 and the reversing roll 9 directly below the scrap hoop
In this embodiment, the width is the same as that of the table roll 7 which is made slightly longer than the maximum width of the strip to be handled, and the reversing roll 9 has its entire outer peripheral surface pressed against the entire outer peripheral surface of the table roll 7. It is installed so that it can be driven to rotate in the opposite direction by the rotation of the roll 7. Further, the deflecting plate 8 and the reversing roll 9 are installed directly below the pass line of the strip 20 in a non-contact state with the strip 220.

Thus, in this embodiment, the scrap hoop deflecting plate 8 and the reversing roll 9 are installed, and the reversing roll 9 is a strip 20.
When the scrap hoop 20a cut off during high-speed running by the upper and lower round blades 2a, 2b is rotated, for example, by rotating in a direction opposite to the traveling direction of the (hereinafter referred to as "reversal"), the first operation is performed first. In the example, the scrap hoop 20a is collided with the deflecting plate 8 to divert the course downward. Further, in the second embodiment, the reversing force of the reversing roll 9 following this guides the table hoop 7 toward the table roll 7 so that the scrap hoop 20a can be guided downward.
In addition to preventing entanglement and entanglement, it is smoothly lowered into the inclination shute 4 and guided to the borer 5.

Here, in the second embodiment, the reversing roll 9 uses a single roll having an integrated body, but the body is divided and arranged only directly below each of the pass line areas on both sides of the strip 20. The main rolls may be used, or two rolls may be used to position the respective trunks of the strips 20 directly under the pass line regions on both sides of the strip 20 through the deflecting plates 8.

Here, if the table roll 7 is a drive roll, the reversing roll 9 can be easily driven to rotate, but as in the present embodiment, the table roll 7 is not driven and the stripping is performed.
It is an idle roll that is driven by 20 running movements,
Further, if the scrap hoop reversing roll 9 is driven to rotate, it becomes difficult to rotate the scrap 20 in synchronism with the traveling movement of the strip 20 due to the increased resistance. Therefore, the height of the table roll 7 is made higher than the height of the pass line of the regular strip 20 to increase the contact pressure with the lower surface of the traveling strip 20 to increase the friction coefficient, and the table roll 7 and the reversing roll 9 are driven. It is preferable to ensure that the rotation is synchronized with the traveling movement of the strip 20.

〔The invention's effect〕

As is apparent from the above description, the present invention provides the scrap hoop deflecting plate at the front end of the opening on the upper and lower round blades of the side trimmer device, and disposing the reversing roll immediately below the deflecting plate. By doing so, during the high-speed cutting operation on both sides of the metal band width direction, even if a flying phenomenon occurs in the scrap hoop immediately after cutting,
By using the deflection plate or the deflection plate and the reversing roll,
It is possible to reliably prevent the flying of the scrap hoop and prevent the scrap hoop from entering and winding around the table roll, and smoothly guide and guide the scrap hoop winding device provided below. In this way, it is possible to smoothly send the metal strip to the next process without degrading the quality of the metal strip that has been cut on both sides in the width direction of the metal strip, and to advantageously speed up the cutting operation, thus increasing productivity. The width can be improved.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a side trimmer device before improvement on which the present invention is based, and FIG. 2 is a schematic side view for explaining an essential part showing the improvement of the present invention. 1 ... Side trimmer device, 2a, 2b ... Upper and lower round blades, 3 ...
… Fixed guide, 4… Inclined short, 5… Borer,
6 ... Opening, 7 ... Table roll, 8 ... Baffle plate,
9 …… Inversion roll, 20 …… Strip, 20a …… Scrap hoop

Claims (1)

[Claims] 1. A widthwise both side portion of a metal strip running on a pass line is cut and cut by a pair of upper and lower round blades to finish it to a predetermined width dimension, and a chipped hoop is cut off from the upper and lower round blades and the round hoop. In the side trimmer device that guides and winds the waste hoop from the opening between the table roll for transporting the metal plate provided on the delivery side through the chute and the scrap hoop deflection plate and chute therebelow, the change of the scrap hoop A side trimmer device characterized in that a reversing roll circumscribing and rotating around the table roll is installed immediately below the facing plate.