JP2001277036A - Side trimming apparatus of steel strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side trimming apparatus of a steel strip which can reliably achieve the side trimming even when the steel strip is changed in width step by step. SOLUTION: This side trimming apparatus comprises a steering roll device 10 to achieve the centering by displacing the steel strip m in the strip width direction, and a side trimmer 20 cutting ears e on both sides of the steel strip m, the side trimmer 20 is provided with a trimmer knife 23 arranged at the angle θ of inclination with respect to the traveling direction of the steel strip m, and a shifting mechanism displacing the trimmer knife 23 in the width direction of the steel. The large meandering of the steel strip m is corrected by the steering roll device 10, and the final fine adjustment can be achieved by shifting the trimmer knife 23. Thus, even when the width of the steel strip m is displaced step by step, the trimmer knife 23 can follow the displacement, and the ears e on both sides of the steel strip m can be reliably removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip steel strip side trimming apparatus. More specifically, the present invention relates to a side trimming facility for trimming uneven widths of a strip steel sheet after rolling.

[0002]

2. Description of the Related Art When performing side trimming of a strip steel sheet, if a trouble such as a disconnection of an edge line of a cutter or a clogging of an ear line in a chute occurs, productivity decreases. It is centered. Conventional apparatuses for performing this centering include a side guide system and a steering roll system. In the side guide system, as shown in FIG. 5, a side guide 101 is provided downstream of a free loop 100 in which a steel strip m is slackened. In the side guide 101, sliders 103 having upright guide pins 102 are arranged on both sides of the steel strip m, and the slider 103 can be moved in the width direction of the steel strip m by the cylinder 104. With this side guide 101,
And feed the strip steel sheet m into the side trimmer A. Fig. 6 shows the steering roll method.
As shown in the figure, a steering roll 201 around which a steel strip m is wound is rotatably supported by a swing frame 202, and the swing frame 202 is supported swingably about a fulcrum 203. A cylinder 204 is attached to one end of the swinging frame 202, and the steering roll 201 moves in the width direction of the steel strip m by the expansion and contraction operation of the cylinder 204. By the movement of the steering roll 201, the steel strip m is centered, and the steel strip m is fed into the side trimmer A.

[0003]

However, in any of the above-mentioned conventional examples, centering is possible when the steel strip m is gently curved as shown in FIG.
As shown in (B), when a step was generated at the welding point of the two strip steel plates m, centering was impossible. This is because the side guide system opens the side guide 101 in order to avoid the guide pin 102 and the strip steel plate m being hooked before and after the welding point or when the strip width changes suddenly. This is because they cannot be constrained in the width direction, causing ear wires to be detached. Further, in the steering roll system, the strip steel plate m is always restrained, but when the distance between the centering position and the side trimmer A is long and the strip camber (the bending of the strip steel plate m) is present, the side trimmer position is reduced. , The strip steel plate m is shifted. Also, the steering roll
The constraint at 201 cannot cope with a step change such as a welding point of the strip steel plate m.

[0004] In view of such circumstances, it is an object of the present invention to provide a strip steel strip side trimming facility that can always perform side trimming even if the strip strip changes stepwise.

[0005]

According to a first aspect of the present invention, there is provided a side stripping apparatus for strip steel strip, comprising: a steering roll device for displacing the strip steel strip in the width direction to center the strip steel strip; and a side trimmer for cutting ears on both sides of the strip steel strip. In the side trimming equipment comprising: the side trimmer, the trimmer knife is disposed by giving an oblique angle to the running direction of the strip, and a shift mechanism for displacing the trimmer knife in the width direction of the strip is provided. It is characterized by. According to a second aspect of the present invention, in the invention according to the first aspect, the moving speed S of the trimmer knife in the width direction of the strip is expressed by the following equation: S ≦ 2 · tan θ × LS, where S is the movement of the trimmer knife. Speed (mm / s) θ: oblique angle LS: running speed of strip steel plate (mm / s) The side trimming equipment for a steel strip according to the third aspect is the second aspect.
In the invention described in the above, the oblique angle of the trimmer knife is adjustable.

According to the first aspect of the invention, the large meandering of the steel strip is corrected by the steering roll device, and the final fine adjustment can be performed by the shift operation of the trimmer knife.
Even if the width of the strip is displaced in a step-like manner, the trimmer knife follows and the ears on both sides of the strip can be reliably cut off. According to the invention of claim 2, the moving speed of the trimmer knife in the plate width direction is equal to or less than twice the oblique angle of the trimmer knife, so that even when the trimmer knife is shifted, blade spilling does not occur. According to the third aspect of the present invention, since the bevel of the trimmer knife can be adjusted, the speed of the shift operation of the trimmer knife can be adjusted freely, and the ear can be removed even if the width dimension of the steel strip changes suddenly. It can be done reliably.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a strip trimming apparatus for a steel strip according to the present embodiment, wherein (A) is a plan view and (B)
Is a side view. As shown in the figure, the side trimming equipment for a steel strip in the present embodiment includes a steering roll device 10 and a side trimmer 20. Strip steel plate m runs from left to right in the figure,
It passes through the steering roll device 10 and the side trimmer 20 in this order. Hereinafter, for the sake of explanation, the right side in the figure is referred to as the front, and the left side is referred to as the rear. Reference numerals 1, 2, 3, and 4 all indicate bridle rolls.

First, the steering roll device 10 will be described. The fixed frame 11 is provided upright. The swing frame 1 is provided on the front surface of the fixed frame 11.
The upper part 3 is pivotally mounted on the upper part by a rotating pin 12 and is attached to be able to swing left and right. The driving source for swinging the swing frame 13 right and left is a cylinder 13c. On the front surface of the swing frame 13, a pair of upper and lower rolls 14, 15 are horizontally and rotatably mounted in parallel with each other. A strip steel plate m is wound around the pair of upper and lower rolls 14 and 15 in an inverted S-shape. On the exit side of the roll 15, a sensor 13s for detecting the position of the strip steel plate m is provided. A position control device 13k is interposed between the sensor 13s and the cylinder 13c. The position control device 13k can control the cylinder 13c based on the detection signal of the sensor 13s. Therefore, according to the steering roll device 10, the cylinder 13
Since the swing frame 13 can be swung left and right by c, the strip steel sheet m wound around the rolls 14 and 15 can be displaced in the sheet width direction and centered.

The steering roll device may be a steering roll device 10B having a structure as shown in FIG. In the steering roll device 10B, the fixed frame 11 is provided horizontally. On the upper surface of the fixed frame 11, a swing frame 13 is pivotally attached at its rear portion by a rotating pin 12, and is attached to be able to swing left and right. A pair of front and rear rolls 14 and 15 are mounted on the upper surface of the swing frame 13 horizontally and rotatably in parallel with each other. This pair of rolls 14 and 15 before and after
Is wound with a strip steel plate m. Other configurations are substantially the same as those of the steering roll device 10. That is, on the exit side of the roll 15, a sensor 13s for detecting the position of the strip steel plate m is provided. This sensor 13
A position control device 13k is interposed between s and the cylinder 13c. With this position control device 13k, the sensor 13s
The cylinder 13c can be controlled based on the detection signal. For this reason, according to the steering roll device 10B, since the swing frame 13 can be swung left and right by the cylinder 13c, the steel strip m wound around the rolls 14 and 15 is displaced in the sheet width direction. It can be centered.

Next, the side trimmer 20 will be described.
As shown in FIG. 1, bridle rolls 1 and 2 are provided in front of the steering roll device 10.
A shift rail 21 is provided in front of the bridle rolls 1 and 2 so as to extend to the left and right at right angles to the running direction of the steel strip m. This shift rail 21 has
A table 22 having wheels and the like is slidably provided. The drive source of the table 22 is a table moving motor 22M. By means of the table moving motor 22M, via a transmission mechanism such as a pinion or a rack, in a direction orthogonal to the running direction of the steel strip m,
The platform 22 can be moved. Since the table 22 is provided with a trimmer knife 23 described later, when the table 22 is moved along the shift rail 21, the trimmer knife 23 can be shifted in the width direction of the strip steel plate m.

A pair of left and right turntables 31, 31 are mounted on the upper surface of the stand 22 so as to be turnable in a horizontal plane. This turning angle is about 0 to 1 degree. And
Although not shown, an angle sensor for detecting a turning angle is provided. The swivel base 31 can be swiveled by an electric motor, a hydraulic motor, or manually. On the upper surface of each turntable 31, a width adjusting rail (not shown) is formed which extends in a direction perpendicular to the running direction of the strip steel plate m. A box containing a knife rotation motor 23M, a speed reducer, and the like is attached to the width adjusting rail so as to be able to advance and retreat toward the steel strip m. A plate width adjusting motor 32M is provided on the upper surface of the swivel table 31 and outside the knife rotating motor 23M. A female screw is formed in the box of the plate width adjusting motor 32M, and a screw rod of the plate width adjusting motor 32M is screwed into the box. By rotating the screw rod of the plate width adjusting motor 32M, the trimmer knife 23 described later can be advanced and retracted toward the steel strip m together with the knife rotating motor 23M.

A pair of upper and lower rotating shafts 32 are rotatably mounted on the knife rotating motor 23M. A pair of upper and lower trimmer knives 23, 23 are attached to tips of a pair of upper and lower rotating shafts 32, 32, respectively. A strip steel plate m is passed between a pair of upper and lower trimmer knives 23, 23. Therefore, when the knife rotation motor 23M is driven, the ears e on both sides of the strip steel plate m can be cut off at the left and right ends of the strip steel plate m by the pair of upper and lower trimmer knives 23,23. Reference numeral 5 denotes a scrap chopper for collecting the ear e.

According to the side trimmer 20 having such a configuration, when the table 22 is moved along the shift rail 21 by the table moving motor 22M, the trimmer knife 23 is moved.
Can be displaced in the width direction of the strip steel plate m. Further, if the swivel base 31 is swiveled with respect to the base 22, the trimmer knife 23 can be swiveled in a horizontal plane, so that the angle between the traveling direction of the strip steel plate m and the trimmer knife 23, that is, the oblique angle θ can be freely set. Can be adjusted.

FIG. 2 is an explanatory diagram of control of the trimmer knife 23. As shown in FIGS. 1 and 2 (A), a speed sensor 22s for detecting the speed of the steel strip m is provided on the entry side of the side trimmer 20. A speed controller 22k is provided between the speed sensor 22s and the table moving motor 22M. In addition to the detection signal of the speed sensor 22s, a signal of the oblique angle θ detected by an angle sensor (not shown) is also input to the speed control device 22k. Based on the detection signal of the speed sensor 22s and the signal of the oblique angle θ of the angle sensor, the table 22 is moved along the shift rail 21, that is, perpendicular to the running direction of the steel strip m by the speed controller 22k. The table 22 can be moved in the direction in which the table 22 moves.

As shown in FIG. 2B, the moving speed of the table 22, that is, the moving speed S of the trimmer knife 23 in the plate width direction is set so as to follow the following equation. S ≦ 2 · tan θ × LS where S: moving speed of trimmer knife (mm / s) θ: oblique angle LS: running speed of strip steel plate (mm / s)

Next, the operation and effect of the strip steel side trimming equipment of the present embodiment will be described. First, the position of the steel strip m is detected by the sensor 13s of the steering roll device 10, and this detection signal is sent to the position control device 13k. The position control device 13k expands and contracts the cylinder 13c according to the detection signal. For this reason, since the swing frame 13 can swing around the rotation pin 12,
The pair of upper and lower rolls 14 and 15 swing right and left. Therefore, the steel strip m wound around the rolls 14 and 15
Can be displaced in the plate width direction and centered.

In the side trimmer 20, the position of the steel strip m is detected by the speed sensor 22s, and this detection signal is sent to the speed control device 22k. A turning angle of the turning table 31 with respect to the table 22 is detected by an angle sensor (not shown).
Sent to 22k. The speed control device 22k has a speed sensor 22s
The table moving motor 22M is driven according to the detection signal and the oblique angle θ. Therefore, the base 22 can be slid along the shift rail 21, so that the trimmer knife 23 is used.
Can be displaced in the width direction of the strip steel plate m. Moreover, since the moving speed S of the trimmer knife 23 in the plate width direction is equal to or less than twice the oblique angle θ of the trimmer knife 23, there is an effect that even if the trimmer knife 23 is shifted, blade spilling does not occur.

Further, since the large meandering of the steel strip m is corrected by the steering roll device 10 and the final fine adjustment can be performed by the shift operation of the trimmer knife 23, the steel strip m is removed.
Even if the width of is displaced in a step-like manner, the trimmer knife 23 can follow and the ears e on both sides of the strip steel plate m can be reliably cut off.

Further, if the swivel base 31 is swiveled with respect to the base 22, the trimmer knife 23 can be swiveled in a horizontal plane, so that the oblique angle θ can be freely adjusted. That is, since the oblique angle θ of the trimmer knife 23 is adjustable, the speed of the shift operation of the trimmer knife 23 can be freely adjusted, and the removal of the ear e can be reliably performed even when the width dimension of the strip steel plate m is suddenly changed. This has the effect that it can be performed.

As described above, according to the strip steel side trimming equipment of the present embodiment, there is an effect that side trimming can always be performed even if the strip steel sheet m changes stepwise.

[0021]

According to the strip steel side trimming equipment of the first aspect, the large meandering of the steel strip is corrected by the steering roll device, and the final fine adjustment can be performed by the shifting operation of the trimmer knife. Even if is displaced stepwise, the trimmer knife follows and the ears on both sides of the strip can be reliably cut off. According to the strip steel strip side trimming equipment of claim 2, the moving speed of the trimmer knife in the plate width direction is twice or less the oblique angle of the trimmer knife, so that even if the trimmer knife is shifted, blade spilling does not occur. According to the strip steel strip side trimming equipment of claim 3, since the bevel of the trimmer knife is adjustable, the speed of the shift operation of the trimmer knife can also be freely adjusted,
Even if the width dimension of the steel strip changes suddenly, the ear can be reliably removed.

[Brief description of the drawings]

1A and 1B are explanatory views of a strip steel strip side trimming facility of the present embodiment, wherein FIG. 1A is a plan view and FIG. 1B is a side view.

FIG. 2 is a control explanatory diagram of a trimmer knife 23;

FIG. 3 is an operation explanatory view of the strip steel strip side trimming equipment of the present embodiment.

FIG. 4 is an explanatory view of a strip steel strip side trimming facility of another embodiment, where (A) is a plan view and (B) is a side view.

FIG. 5 is a schematic perspective view of a side guide type centering roll device.

FIG. 6 is a schematic perspective view of a steering centering roll device.

FIG. 7 is a plan view of a strip steel plate m for explaining a problem of the conventional device.

[Explanation of symbols]

 Reference Signs List 10 steering roll device 20 side trimmer 23 trimmer knife m strip steel plate e ear

Claims (3)

[Claims] 1. A side trimming apparatus comprising: a steering roll device for displacing and centering a strip steel plate in a width direction of the strip; and a side trimmer for cutting ears on both sides of the strip steel sheet. And a shift mechanism for displacing the trimmer knife in the width direction of the steel strip is provided. 2. The moving speed S of the trimmer knife in the plate width direction is as follows: S ≦ 2 · tan θ × LS where S: moving speed of the trimmer knife (mm / s) θ: oblique angle LS: The side trimming equipment for a strip steel strip according to claim 1, wherein the apparatus follows a running speed (mm / s). 3. A side trimming apparatus for strip steel strip according to claim 2, wherein the bevel of said trimmer knife is adjustable.