KR20000011540U - Steel plate support for side trimmer - Google Patents

Abstract

The present invention consists of an upper roller, a lower roller and an upper roller position adjusting means mounted between the turning roll and the side trimmer. The lower rollers are respectively mounted to the blocks with both ends rotatable, and the shafts extending from the bottom of each block are respectively accommodated in the fixed block fixed to the frame, and the axis of each block is divided into the upper shaft and the lower shaft smaller in diameter. Springs are built in the inner spaces of the fixed blocks, respectively, and upper ends of the springs respectively contact the bottom surfaces of the upper shafts of the blocks, thereby moving the lower rollers downward as the steel sheet moves downward. The upper roller is mounted on the block with both ends rotatable, and the upper roller position adjusting means for adjusting the vertical position of the upper roller according to the change of the vertical position of the lower roller is installed at the upper part of the block. By adjusting the position of the upper and lower rollers to support the steel sheet in accordance with the diameter reduction of the steel sheet positioned between the upper, lower rollers and the upper, lower knives to always maintain a horizontal state.

Description

Steel plate support for side trimmer

The present invention relates to a side trimmer for cutting a steel sheet, and particularly to a steel sheet support for a side trimmer that can support the steel sheet in a horizontal state even when a position change of the steel sheet occurs due to a change in the shape (diameter) of the knife. It is about.

An annealing steel sheet subjected to heat treatment in an annealing furnace made of a cold rolled steel sheet is cut at both ends to meet the demand of the customer. The device used is a side trimmer. The process of cutting the both ends of the annealing steel sheet using a side trimmer will be described with reference to FIGS. 1A and 1B.

1A and 1B are a perspective view and a schematic side view showing an operating state of a general side trimmer, wherein the annealed steel sheet 3 (hereinafter referred to as “steel plate”) whose transfer direction is switched by the direction change roll 1 is a side trimmer. In the process of passing through (10), both ends are cut to a certain width. That is, side trimmers 10 are mounted on both sides of the transfer path of the steel plate 3, and the upper knife 11 and the lower knife 12 of each side trimmer 10 are engaged with each other up and down. Both sides of the steel plate 3 by the respective knifes 11 and 12 that rotate in the process of passing between the upper knife 11 and the lower knife 12 of each side trimmer 10 of the conveyed steel sheet 3 The part is cut a certain width.

As shown in FIG. 1A, a support roll 2 is disposed on the upper portion of the steel sheet 3 to be transferred to prevent vertical flow of the steel sheet 3. In addition, the upper knife 11 of each side trimmer 10 is capable of adjusting its vertical position, the lower knife 12 is fixed to a predetermined position (the configuration of the side trimmer used in the present invention is a general, Detailed description thereof will be omitted).

The upper and lower knives 11 and 12 which press and cut the steel plate 3 are worn down for a long time and the diameter thereof is reduced, and the upper knife 11 is mounted to compensate for the wear amount of each knife 11 and 12. The vertical position of the upper knife 11 is adjusted by using the screw jack 13 above the block 11A.

That is, as shown in Figure 1b, the upper and lower knives (11 and 12) for cutting the steel plate 3 is gradually reduced in diameter as the cutting process is progressed, and accordingly fixed lower knife ( The engagement point of 12) and the movable upper knife 11 are gradually lowered. Therefore, a line connecting the upper end of the turning roll 1, which can be viewed as the starting point of the steel plate 3, and the engaging point of the upper and lower knives 11 and 12 (as a conveying path of the steel sheet 3, a pass line (pass) line) is lowered downward with respect to the tip of the turning roll (1).

The pass line L1 set perpendicular to the imaginary line connecting the center points of the first upper and lower knives 11 and 12 is gradually lowered as shown in FIG. 1B (L2), so that the support roll 2 and the deformed path A gap is generated between the lines L2 (steel plate), so that the support roll 2 cannot support the steel plate 3. As a result, during the cutting operation of the steel sheet 3 by the upper and lower knives 11 and 12, up and down flow of the steel sheet 3 is prevented, so that the smooth cutting process cannot be performed, and in particular, the steel sheet 3 is supported by the support roll 2. ) Is not supported, the steel sheet (3) is pressed by the upper and lower knives (11 and 12) when the cutting operation is carried out, the angle of the cutting surface (unevenness of the cutting surface) occurs, causing the cutting failure do. Along with this, damage may occur to the surfaces of the upper and lower knives 11 and 12.

On the other hand, even when the support roll 2 is located below the steel plate 3, when the diameter of each knife 11 and 12 is reduced, the steel sheet (from the support roll 2 to the engaging point of each knife 11 and 12) 3) cannot maintain the horizontal state, the above-mentioned problem appears.

The present invention is to solve the above-described problems caused by the wear of the upper, lower knives, the object of the present invention is to provide a support that can maintain the position of the steel plate horizontally despite the wear of each knife.

The present invention for solving the above object consists of an upper roller, a lower roller and an upper roller position adjusting means mounted between the turning roll and the side trimmer. The lower rollers are respectively mounted to the blocks with both ends rotatable, and the shafts extending from the bottom of each block are respectively accommodated in the fixed block fixed to the frame, and the axis of each block is divided into the upper shaft and the lower shaft smaller in diameter. Springs are built in the inner spaces of the fixed blocks, respectively, and upper ends of the springs respectively contact the bottom surfaces of the upper shafts of the blocks, thereby moving the lower rollers downward as the steel sheet moves downward.

The upper roller is mounted on the block with both ends rotatable, and the upper roller position adjusting means for adjusting the vertical position of the upper roller according to the change of the vertical position of the lower roller is installed at the upper part of the block. By adjusting the position of the upper and lower rollers to support the steel sheet in accordance with the diameter reduction of the steel sheet positioned between the upper, lower rollers and the upper, lower knives to always maintain a horizontal state.

The upper roller position adjusting means includes a screw jack fixed to each of the two blocks supporting the upper roller by a fixing plate, a drive unit for driving a shaft jack and one screw jack respectively connected to the screw jacks at both ends, and installed at one side of the lower knife. It is equipped with a sensor for detecting the diameter reduction amount of the lower knife to transmit a detection signal to the control unit for controlling the drive unit to operate the drive unit for driving the screw jack according to the diameter reduction amount of the lower knife to change the vertical position of the upper roller.

1A and 1B are a perspective view and a side view illustrating a general side trimmer in an operating state.

2 is a perspective view of the present invention.

3 is an exploded perspective view of the present invention.

Figures 4a to 4c are schematic views sequentially showing the operating state of the subject innovation according to the knife shape change of the side trimmer.

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail.

Figure 2 is a perspective view of the present invention, Figure 3 is an exploded perspective view of the present invention, Figure 2 shows the echo conversion roll 1 and the upper, lower knife (11 and 12) for convenience.

The steel plate support 100 according to the present invention is mounted between the turning roll 1 and the side trimmer (shown for convenience only, the secondary knife) shown in Figure 1, the upper roller 30 and the lower roller 20 Is made of.

Both ends of the lower roller 20 are accommodated in the bearing blocks 22A and 22B, respectively, so that they can rotate about the bearing blocks 22A and 22B, and shafts extending from the lower ends of the respective bearing blocks 22A and 22B. 23A and 23B are accommodated in the fixed blocks 26A and 26B, respectively. The shafts 23A, 23B of each bearing block 22A, 22B are divided into upper shafts 24A, 24B and lower shafts 25A, 25B having a smaller diameter than the upper shafts 24A, 24B, and fixed blocks 26A. , 26B) is composed of a hollow cylindrical member having an upper and lower end open.

On the other hand, springs 27A and 27B are built in the internal spaces of the fixed blocks 26A and 26B, respectively, and upper ends of the springs 27A and 27B are formed on the shafts 23A and 23B of the bearing blocks 22A and 22B. The lower surface of the jaw, that is, the lower surfaces of the upper shafts 24A and 24B, respectively. In addition, the fixing blocks 26A and 26B are fixed to a frame (not shown) of the side trimmer equipment. Reference numerals 21A and 21B denote bearing covers.

Both ends of the upper roller 30 are accommodated in the bearing blocks 31A and 31B, respectively, so that the upper roller 30 can be rotated with respect to the bearing blocks 31A and 31B, and the upper roller 30 is disposed above the respective bearing blocks 31A and 31B. The upper roller adjusting means 40 for adjusting the vertical position of the) is installed. Reference numerals 32A and 32B denote bearing covers.

The upper roller adjusting means 40 is a screw jack (42A, 42B) fixed to each of the bearing blocks (31A, 31B) supporting the upper roller (30) by fixing plates (41A, 41B), and both ends of the coupling ( A shaft 44 connected to the screw jacks 42A and 42B by 43A and 43B, respectively, and a drive unit 45 for driving one of the screw jacks 42B.

The operation of the present invention as described above will be described through each drawing.

4a to 4c are schematic views sequentially showing the operation of the present invention according to the shape change of the side trimmer knife. First, FIG. 4a shows that the steel plate 3 via the turning roll 1 is the upper and lower parts of the present invention. After passing between the rollers 30 and 20, the width of the side end portion is cut by the upper and lower knives 11 and 12 of the side trimmer. In the initial state shown in Fig. 4a, a pass line (steel plate feed path) connecting the upper and the upper and lower knives 11 and 12 engaging points, which can be seen as the feed start point of the steel sheet 3, Is horizontal.

FIG. 4B shows a state in which the diameters of the upper and lower knives 11 and 12 are reduced as the steel sheet cutting process proceeds, where A in FIG. 4B is an upper portion having a reduced diameter (reduced amount “α”) and The circumference of the lower knives 11 and 12, B represents the initial circumference of the upper and lower knives 11 and 12. Therefore, the position of the center point of the fixed lower knife 12 is not changed, but the center of the upper knife 11 whose vertical position is changed by the screw jack (13 in FIG. 1A) is each knife 11 and 12. It is moved downward by the sum 2a of the diameter reduction amount of. As a result, the position of the steel plate 3 at the meshing point of the upper knife 11 and the lower knife 12 is lowered by the sum 2α of the diameter reduction amounts of the upper knife 11 and the lower knife 12 at the initial position. The first pass line (B 'in FIG. 4B) is changed to change (A' in FIG. 4B).

Accordingly, the steel sheet 3 corresponding to the surface of the lower roller 20 of the steel sheet support 100 is also moved downward, and the downwardly moved steel sheet 3 presses the lower roller 20 under the load. Due to the load of the steel plate 3 acting on the lower roller 20, the shafts 23A and 23B extending from the bearing blocks 22A and 22B at both ends of the lower roller 20 are also respectively fixed in the fixing blocks 26A and 26B. In this process, the springs 27A and 27B received in the fixed blocks 26A and 26B are in contact with the bottom surfaces of the upper shafts 24A and 24B of the bearing blocks 22A and 22B and the shafts 23A and 23B. Becomes Therefore, the steel sheet 3 in which the pass line is changed is maintained in the state supported by the lower roller 20.

On the other hand, a sensor (not shown) for measuring the diameter of the lower knife 12 is mounted outside the lower knife 12 of the side trimmer, and the sensor controls information on the reduced diameter of the lower knife 12. (Not shown). The controller calculates an operation time of the driving unit 45 in consideration of the detected information and the feed amount per unit time of the screw jacks 42A and 42B mounted on the bearing blocks 31A and 31B of the upper roller 30. The actuation of the drive part 45 activates the screw jack 42B connected to the drive shaft of the actuating part 45, and at the same time the other screw jacks 42A connected by the couplings 43A, 43B and the shaft 44 operate. To move the upper roller 30 downward.

Here, the movement amount of the upper roller 30 by the drive unit 45 is determined according to the position of the steel plate support 100. That is, when the upper roller 40 is installed at the midpoint of the distance between the center point of the upper and lower knifes 11 and 12 and the center point of the direction change roll 1, the upper and lower knifes 11 and 12 are reduced in diameter. The amount of downward movement of the steel plate 3 (the gap between the upper and lower rollers) is 1/2 of the sum 2α of the diameter reduction amounts of the upper knife 11 and the lower knife 12, that is, either knife 11 or 12. It is obtained in the same manner as the diameter decreasing amount α of.

Therefore, the upper knife 30 and the lower knife having the reduced diameter must be moved downward from the initial position of FIG. 4A by the sum 2α of the diameter reduction amounts of the upper knife 11 and the lower knife 12. The engagement point of 12 and the engagement point of the upper roller 30 and the lower roller 20 are kept in a horizontal state, wherein the lower roller 20 is attached to the upper roller 30 in addition to the downward movement by the steel plate 3. Further movement is made (state of FIG. 4D).

As shown in Fig. 4d, although the steel sheet located between the operating turning roll 1 and the engaging point of the upper roller 30 and the lower roller 20 after the operation of the present invention does not remain horizontal, The steel plate existing between the engagement point of the knife 11 and the lower knife 12 and the engagement point of the upper roller 30 and the lower roller 20 is kept in a horizontal state, and thus the steel plate of the upper and lower knife 11 and 12. Of course, the cutting process can proceed smoothly.

On the other hand, a sensor (S) is mounted on one side of the bearing block (22B) of the lower roller 20 to detect excessive downward movement of the upper roller 30, if the sensor (S) is the upper roller (30) When detecting the bearing block 31B of the control unit receives the detection signal to stop the operation of the drive unit 45 to prevent damage to the equipment.

The present invention as described above can be maintained in the horizontal state of the steel sheet to be cut by adjusting the position of the upper and lower rollers to support the steel sheet in accordance with the reduction of the diameter of the upper, lower knife generated as the steel sheet cutting process proceeds to the cutting process The efficiency of the product can be improved, and in particular, the high quality of the product can be ensured by keeping the cutting state of the steel sheet satisfactorily.

Claims (2)

In the side trimmer is provided with an upper and lower knives, cutting a predetermined width of both sides of the steel sheet conveyed through the direction change roll, An upper roller, a lower roller, and an upper roller position adjusting means mounted between the turning roll and the side trimmer, The lower rollers are respectively mounted to blocks with both ends rotatable, and shafts extending from the bottom of each block are respectively accommodated in fixed blocks fixed to the frame, and the shafts of each block are upper shafts and lower diameters thereof. The inner space of each fixed block is divided into a shaft, the springs are respectively built so that the upper end of each spring in contact with the bottom surface of the upper shaft of each block to move the lower roller in accordance with the downward movement of the steel sheet, The upper rollers are mounted on the blocks respectively with both ends rotatable, Upper and lower rollers that support the steel sheet in accordance with the diameter reduction of the upper and lower knives are installed in the upper portion of the block is provided with an upper roller position adjusting means for adjusting the vertical position of the upper roller in accordance with the change in the vertical position of the lower roller Steel plate support for the side trimmer, characterized in that configured to maintain the horizontal position of the steel sheet located between the upper and lower rollers and the upper and lower knives at all times by adjusting the position of the upper and lower rollers. The method of claim 1, The upper roller position adjusting means is a screw jack fixed to each of the two blocks for supporting the upper roller by a fixed plate, both ends of the drive unit for driving a screw jack and one screw jack respectively connected to the screw jack and one side of the lower knife The upper roller is installed and mounted on the upper roller by sensing the diameter reduction amount of the lower knife to transmit a detection signal to the control unit for controlling the drive unit to operate the drive unit for driving the screw jack according to the diameter reduction amount of the lower knife. Steel sheet support for side trimmers, characterized in that the vertical position of the change.