KR100805611B1 - Shearing apparatus for the strip - Google Patents

Abstract

The present invention relates to a shear sharing device for cutting the strip in the width direction and installed in front of the strip entry end of the cold rolling mill and chamfering the both edges of the front end of the strip, according to the traveling direction of the strip A housing in which a through hole is formed, through which the strip which is movable forward and backward, passes, a lower knife fixed to a lower portion of the through hole, and an upper knife installed to be movable upward and downward in an upper portion of the through hole; A pair of chamfering means respectively positioned on both sides of the strip running with a widthwise cutter having a widthwise cutting machine, a chamfering tool capable of chamfering an edge of the front end of the strip, and the chamfering means along the width direction of the strip; Since it is characterized in that the drive means for moving in the left and right directions, By cutting the both edges of the front end of the trip after the cutting of the strip, the strip can be easily entered into the entry end of the cold rolling mill for rolling, thereby preventing both edges from interfering inside the cold rolling mill during stripping. There is an excellent effect that makes you good.

Chamfering, Gripping Means, Cold Rolling Mill, Cutting Machine

Description

Shearing apparatus for the strip             

1 is a view showing a state in which an entry share is installed at the entry end of the cold rolling mill;

FIG. 2A shows a state in which a strip passes through an entry share, and FIG. 2B shows a handshaker for chamfering both edges of the strip;

Figure 3 is a perspective view showing a share device for strips according to the present invention;

Figure 4 is a perspective view showing the structure of the housing of the share device for strips according to the present invention;

Figure 5 (a) is a perspective view showing a state in which the fixing frame is mounted on the housing of the strip sharing device according to the present invention, Figure 5 (b) is a perspective view of the fixing frame;

Figure 6 is a perspective view showing the chamfering means of the share device for strips according to the present invention;

7 is a view showing a coupling state of an operation portion of the chamfering means and an extension member;

8 is an exploded perspective view of a drive means mounted to a housing in accordance with the present invention;

<Description of Symbols for Major Parts of Drawings>

1: housing

2: Base

8: pressing plate                 

9: spring

C1, C2, C3, C4, C5, C6, C7: Cylinder

E: Width cutting machine

F: Chamfering means

k1, k2, k3, k4: knife

M: drive motor

The present invention relates to a chamfering device for chamfering both edges of the front end of the strip entering the inside of the cold rolling mill, and more particularly to the cutting of the strip in the width direction as well as the strip at the entry end of the cold rolling mill. The present invention relates to a strip sharing device capable of chamfering both edges of the front end of the strip so as to smoothly enter it.

In general, cold rolling is a facility for cold rolling an ongoing sleeve into a strip. In order to perform the internal maintenance or repair work of the cold rolling mill, the strip of the rolling process is stopped, the strip is cut, and the strip remaining in the rolling mill is discharged through the discharge stage of the rolling mill.

That is, referring to FIGS. 1 and 2, an entry shear (100) is provided at an entry end of the cold rolling mill (P). As described above, in order to perform the internal maintenance or maintenance work of the cold rolling mill P, the strip S is cut by the entry share 100 after the progress of the strip S is stopped. The strip located inside P) is removed through the discharge end of the cold rolling mill P. Then, after the maintenance work for the cold rolling mill (P) is completed, the rolling process is performed while mailing the strip (S) to the cold rolling mill (P).

However, in the process of entering the strip S into the inlet end of the cold rolling mill P to start the rolling process, when the strip S is biased to one of the left and right sides in the traveling direction, the front end of the strip S Both edges interfere with the rolling mill. As a result of such interference, if the front end of the strip (S) is deformed, the progress of the strip is difficult and also takes a long time to heal it. In particular, when the wide strip (S) passes through the cold rolling mill (P), the progress of the strip becomes more difficult.

Therefore, in order to solve this problem, the operator performs the chamfering operation by using the handshaker 103 (see FIG. 2B) at both edges of the front end of the strip after the strip S is cut in the entry share 100. . However, since the strip (S) located at the cold rolling mill (P) entry end is a material for performing a rolling operation, the strip (S) is thick so that the strip (S) is formed by hand using the handshaker (103) as described above. It is very difficult to chamfer.

The present invention has been made to solve the conventional problems as described above, it is possible to cut the strip entering the cold rolling mill in the width direction as well as the front of the strip so that the strip can smoothly enter the inside of the cold rolling mill. It is an object of the present invention to provide a share device for strips that can chamfer both edges of a stage.

In order to achieve the above object, according to the present invention, the shear sharing device for cutting the strip in the width direction is installed in front of the strip entry end of the cold rolling mill and chamfered cutting of both edges of the front end of the strip is It is movable in the front and rear direction along the advancing direction of the strip, and has a through hole through which the advancing strip passes, a lower knife fixed to the lower part of the through hole, and a vertically moving upper part of the through hole. A widthwise cutter having an upper knife, which is possibly installed, a pair of chamfering means respectively positioned on both sides of the strip that proceed with the chamfering tool capable of chamfering the edge of the front end of the strip, and the width direction of the strip And driving means for moving the chamfering means in left and right directions. The features.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3 to 8, and the same components are assigned the same reference numerals.

According to the present invention, a chamfer cutting strip device is installed in the front of the strip entry end of the cold rolling mill (P) and the housing having a predetermined through hole of a predetermined size through which the strip (S) is generally formed in the center portion. Has (1). The housing 1 is mounted on the base 2 slidably in the front-rear direction along the traveling direction of the strip. On the base 2 is provided a first cylinder C1 for sliding the housing 1 forward and backward.

Further, on the base 2, a triangular protrusion 4 extends along the traveling direction of the strip and a slider groove 3 corresponding to the protrusion 4 is formed on the lower surface of the housing 1. A connecting ring 43 is provided below the rear side of the housing 1, and the coupling end 62 of the cylinder rod of the first cylinder C1 fixed on the base 2 is pin 54. It is coupled to the connecting ring 43 by. Accordingly, the housing 1 is formed in a state in which the protrusion 4 and the slider groove 3 are coupled and the coupling end 62 of the first cylinder C2 is connected to the connecting ring 43 through the pin 54. By the operation of the cylinder (C1) it moves in the front-rear direction along the traveling direction of the strip (S). The corner portion of the base 2 is provided with a base bolt fixing groove 11 to be fixed to the ground.

One side of the housing 1 is provided with a widthwise cutter E with knives k1 and k2 positioned respectively above and below the advancing direction of the strip S adjacent to the through-holes. The lower knife k2 is fixed to the housing 1 while the upper knife k1 is provided to be movable in the vertical direction along the side of the housing 1. The width direction cutter E has the 2nd cylinder C2 for moving the upper knife k1 to the up-down direction. That is, the upper plate 14 is provided on the upper portion of the housing 1 and the second cylinder C2 is fixed on the upper plate 14. The cylinder rod of the second cylinder C2 extends downwardly through the through hole formed in the upper plate 14 and is coupled to the upper portion of the fixing frame 13 of the widthwise cutter E described below.

An upper portion of the passage hole of the housing 1 is provided with a cutout portion for guiding the upper knife k1 to be movable in the vertical direction. At this time, the upper knife (k1) is coupled to the end of the cylinder rod of the second cylinder (C2) is coupled to the lower portion of the fixing frame 13 to move in the vertical direction along the cutout. The left and right sides of the fixing frame 13 have different heights. This works so that the strip S is cut well by the upper knife k1 mounted at the bottom thereof, as described below. A through hole 20 communicating with the cutout is formed on the side of the housing 1, and the key member 5 is slidably installed in the through hole 20. The rear end of the key member 5 is connected to the seventh cylinder C7. A key groove 12 corresponding to the front end of the key member 5 is provided on the side of the fixing frame 13. Therefore, the fixing frame 13 is fixed while the key member 5 protrudes through the through hole 20 by the operation of the seventh cylinder C7 and is inserted into the key groove 12, and the seventh cylinder ( In the state in which the key member 5 is drawn out from the key groove 12 by the opposite operation of C7), the fixing frame 13 is moved up and down by the operation of the second cylinder C2.

On one side of the housing 1, into which the strip S enters, a pair of chamfering means F having chamfering knives k3 and k4 for performing chamfering cuts at both edges of the strip S at a predetermined distance. It is provided spaced apart. The chamfering means F are located on both sides of the advancing strip S, respectively. In addition, the chamfering means (F) has a strip (C) when cutting the strip (S) by the widthwise cutter (E), or chamfering the both edges of the front end of the strip (S) by the chamfering knives (k3, k4). A holding means for fixing S) is provided. The holding means has a pressing plate 8 which is movable in the vertical direction by a fourth cylinder C4 provided on the chamfering means F.

The chamfering knife is composed of a first knife k3 positioned to be movable upward and downward from the upper part of the strip S held by the gripping means, and a second knife k4 fixed to the lower part of the strip S. do. The chamfering means F is provided with a fifth cylinder C5 for driving the first knife k3 in the vertical direction.

That is, the upper plate 18 is provided at the upper portion of the chamfering means 19, and the fifth cylinder C5 is fixed to the upper plate 18. The cylinder rod of the fifth cylinder C5 extends downwardly through the first through hole formed in the upper plate 18, and a protruding fixing frame 16 for fixing the first knife K3 is coupled to the lower end thereof. do. The protruding fixing frame 16 moves up and down along the guide 17 provided on the inner side of the chamfer means F by the operation of the fifth cylinder C5. Further, the cylinder rod end of the fourth cylinder C4 extends downward through the second through hole formed in the upper plate 18, and the pressing plate 8 is provided at the end thereof.

On the other hand, the housing 1 is provided with driving means for adjusting the separation distance of the chamfer means F according to the width of the traveling strip. The drive means has a rotary motor (M) provided on one side of the housing (1), and a screw shaft (7) rotated by the rotational force of the rotary motor (M). The screw shaft 7 is rotatably inserted into the groove portion 15-1 formed along the width direction of the strip S at the upper portion of the passage hole of the housing 1. The rotary motor M is fixedly installed on the support plate M1 provided on one side of the housing 1, and the rotary shaft of the rotary motor M is connected to one end of the screw shaft 7. A pair of flanges 5 spaced apart at predetermined intervals are provided at the connecting portion of the rotating shaft M and the screw shaft 7, and the connecting portions between the flanges 5 are provided at the protrusions protruding from the supporting plate M1. It is inserted into the groove 72 formed. The screw shaft 7 is formed with both threads differently about the center part.

The chamfering means F is provided with a T-shaped insertion protrusion 15 slidably inserted into the recess 15-1 of the housing 1, and the screw shaft 7 is attached to the insertion protrusion 15. It passes through the hole 31 formed. At this time, the screw thread formed in the screw shaft 7 is screwed into the hole 31. Accordingly, when the screw shaft 7 is rotated by the rotation of the rotary motor M, the chamfering means F moves in the left and right directions along the recess 15-1. And the separation distance of the chamfering means F is adjusted according to the width length of the strip S which advances.

Further, the chamfering means F is provided with an angle adjusting member for adjusting the chamfering angles of the chamfering knives k1 and k2. That is, the chamfering means (F) has an operation portion provided with the above-mentioned chamfering knives (k1, k2) and the holding means, one end of the extension member which is bent and extended around the insertion projection (15) on one side of the operation portion Combined. At this time, the angle adjusting member has a sixth cylinder (C6) is fixed to the other end of the extension member, the cylinder rod of the sixth cylinder (C6) is coupled to the coupling member 42 provided on the outer surface of the operating portion. Therefore, by the operation of the sixth cylinder (C6) the operating portion pivots around the hinge coupling portion (R), as a result of which the installation angle of the chamfering knife (k1, k2) provided in the operating portion is changed to strip (S) Chamfer angle is adjusted.

As such, a spring is provided between the engaging projection 41 provided on the inner side of the extension member and the engaging member 42 provided on the outer side of the operating portion to prevent the operating portion from rocking while the sixth cylinder C6 is operating. (9) is provided. That is, the chamfer angle adjusted by the sixth cylinder C6 is fixed by the spring 9 when the edge of the strip S is chamfered by the chamfer knives k3 and k4.

As described below, the force applied when the fourth cylinder C4 and the fifth cylinder C5 operate does not act on the operating portion of the chamfering means F and the hinge coupling portion R of the extension member. The lower surface (a) of the operating part is slidably contacted on the support surface (b) of the lower part of the housing (1). That is, the lower surface (a) of the operating part slides in the horizontal direction on the support surface (b) of the housing 1 by the operation of the driving means.

Hereinafter, the operation of the share device for strips according to the present invention will be described.

First, a rolling operation is performed while the strip S passing through the through hole of the strip sharing device according to the present invention passes through the cold rolling mill P. At this time, in the case of performing internal maintenance or repair work of the cold rolling mill P, the operation of the cold rolling mill P is stopped and the progress of the strip S is stopped.

In this manner, after the rolling operation is stopped, the strip S passing through the through hole must be gripped in order to cut the strip S.

The chamfering means F moves toward both sides of the strip S as the rotating shaft M which comprises the drive means is rotated and the screw shaft 7 is rotated by the rotational force. In the state where the chamfering means F is in contact with both sides of the strip S, the pressing plate 8 is lowered by the operation of the fourth cylinder C4 of the holding means to fix the strip S. Then, the pressing plate 8 is lowered by the operation of the fourth cylinder C4 to press the strip S so that the strip is fixed to the holding means.

The upper knife k1 is lowered by the operation of the second cylinder C2 provided to the widthwise cutter E while the strip S is fixed by the pressing plate 8, and the upper knife k1 and the upper knife k1 are lowered. The strip S is cut by crossing the lower knife k2. When the cutting operation in the width direction of the strip S is completed, the second cylinder C2 and the fourth cylinder C4 operate to raise the upper knife k1 and the pressing plate 8.

At this time, the strip existing inside the cold rolling mill (P) is discharged by the operation of the take-up roll (not shown) provided in the rear of the cold rolling mill (P).

Thereafter, the housing 1 is moved to the rear side of the base by the operation of the first cylinder C1 provided on the base 2. At this time, the rear movement of the housing 1 is made until the cut portion of the strip S is located at the midpoint of the chamfering knives K3 and K4 of the chamfering means F. After the rear movement of the housing 1 is completed, the operation portion of the chamfer means F is pivoted about the hinge coupling portion R by the operation of the sixth cylinder C6 to adjust the chamfer angle to be cut. . The chamfer angle adjusted by the angle adjusting member is fixed by the elastic action of the spring 9.

After the predetermined chamfering angle is set, the pressing plate 8 of the gripping means descends to fix the strip S by the operation of the fourth cylinder C4. Thereafter, the first knife k3 is lowered by the operation of the fifth cylinder C5 to chamfer the edges of the strips S. After the chamfer cutting is completed, the fourth cylinder C4 and the fifth cylinder C5 operate in opposite directions to raise the pressing plate 8 and the first knife k3.

After that, when the internal repair of the cold rolling mill (P) is completed, the front end of the chamfered strip (S) is passed through the through hole of the share device, and the rolling operation is performed by entering the entry end of the cold rolling mill (P). .

According to the present invention, it is possible to easily enter the strip into the entry end of the cold rolling mill for rolling by chamfering the edges of both ends of the strip front end after cutting the strip so that both edges interfere with the inside of the cold rolling mill during stripping. It has an excellent effect of improving the strip flowability by preventing.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains recognize that modifications and variations can be made to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. shall.

Claims (3)

In the share device for strips installed in front of the strip entry end of the cold rolling mill for cutting the strip in the width direction and chamfering both edges of the front end of the strip, A housing which is movable in the front-rear direction along the traveling direction of the strip and has a through hole through which the traveling strip passes; A widthwise cutter having a lower knife fixed to the lower portion of the passage hole and an upper knife movably installed in the vertical direction on the upper portion of the passage hole; A pair of chamfering means respectively located on both sides of the strip running with a chamfering tool capable of chamfering the edge of the front end of the strip; Share device for a strip, characterized in that the drive means for moving the chamfering means in the horizontal direction along the width direction of the strip. The method of claim 1, The chamfering device is characterized in that the chamfering device is provided with a gripping member for gripping the strip cut by the widthwise cutter or the chamfering tool. The method of claim 1, The chamfering device according to claim 1, characterized in that the cutting angle adjusting means for adjusting the cutting angle of the edge of the strip cut by the chamfering tool.

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