KR100387371B1 - A rolling roll reduction device of rolling mill - Google Patents

Abstract

The present invention relates to a rolling roll reduction apparatus of a rolling mill, and an object thereof is to finely adjust the height of an upper roll so as to more accurately set its left and right horizontal positions.

According to the rolling roll reduction device 60 of the rolling mill according to the present invention, the lowering is in contact with the upper portion of the upper roll block (31a) (31b) while lowering the lowering while rotating on both sides of the upper portion of the frame 20 during the reduction of the pressing force It has a pair of adjusting screws 64L and 64R for moving the blocks 31a and 31b up and down. The central portions of the adjusting screws 64L and 64R are respectively screwed on the upper portion of the frame 20. The manual adjustment nut 65 fastened to the bolt 66 is installed. Accordingly, when the bolt 66 is loosened and the manual adjustment nut 65 is rotated to operate the adjustment screws 64L and 64R, the left and right heights of the upper roll blocks 31a and 31b are finely adjusted so that the upper roll 30 ) Has the effect of setting the horizontal level accurately. In addition, due to this action effect can be uniformly applied to the release wire (W), the rolling accuracy has the advantage that also improves.

Description

Rolling roll reduction device of rolling mill {A ROLLING ROLL REDUCTION DEVICE OF ROLLING MILL}

The present invention relates to a rolling mill for rolling a release wire rod, and more particularly, to a rolling roll reduction apparatus of a rolling mill capable of adjusting the rolling force of the rolling roll up and down rotatably installed on the frame.

In general, the release wires refer to wires other than concentric end faces, and the rolling process is performed by passing between upper and lower rolling rolls rotatably installed in the rolling mill.

To this end, the conventional rolling mill, as shown in Figure 1, the frame 2 is fixed to the rolling stand 1, and is arranged up and down so as to rotate while maintaining a predetermined distance to the frame 2, and the band shape on the outer circumference The upper roll 3 and the lower roll 4 in which the forming grooves 3a and 4a are formed, the driving device 5 for driving the upper lower rolls 3 and 4, and the upper roll 3, respectively. The roll reduction apparatus 6 for adjusting the position of the up and down is provided.

The driving means 5 includes a drive motor 5a for generating power by receiving power, a speed reducer 5b for receiving the power of the drive motor 5a, decelerating and outputting it, and one end of the output shaft of the speed reducer 5b. And the other end is composed of upper and lower universal joints 5c and 5d coupled to upper and lower rolls 3 and 4. Therefore, the power of the drive motor 5a is distributed by the reducer 5b to drive the upper roll 3 and the lower roll 4, respectively, thereby forming the upper roll 3 and the lower roll 4 The release wire which passes between the grooves 3a and 4a is transferred at the same time as the rolled wire.

In addition, the roll reduction device 6 moves the upper roll 3 up and down in order to correspond to the diameter and rolling width of the wire rod to be rolled, and the motor 6a provided on the upper portion of the frame 2 and the motor 6a A reducer 6b for decelerating and driving the power to drive the drive gear 6c, and driven gears 6d and 6e which mesh with both sides of the drive gear 6c and rotate. At this time, the rotating shafts of the driven gears 6d and 6e are made of screws 6f and 6g to idle. Further, the lower ends of the screws 6f and 6g of the driven gears 6d and 6e come into contact with the roll blocks 3b and 3c rotatably supporting both ends of the upper roll 3. As a result, the screws 6f and 6g move up and down due to the drive of the motor 6a, and the upper roll 3 is also moved up and down.

However, the roll reduction device 6 of the conventional rolling mill has a problem that it is difficult to accurately level the upper roll 3 by adjusting the up-down position of the upper roll 3 only by driving the motor 6a. That is, each of the screws 6f and 6g, which are the rotation shafts of the driven gears 6d and 6e, is rotated by the driving of the motor 6a, and on both sides of the upper roll 3 which is in contact with each of the screws 6f and 6g. The roll blocks 3b and 3c are moved up and down in the upper part of the frame 2, respectively. Therefore, when the screw 6f (6g) spiral pitch is not precisely made, the horizontal right and left of the upper roll 3 is not exactly matched by this, there is a problem in that the rolling accuracy can not be uniformly applied, thereby reducing the rolling accuracy.

The present invention is to solve this problem; It is an object of the present invention to provide a rolling roll reduction apparatus of a rolling mill that can adjust the height of both ends of the upper roll finely to improve the roll reduction apparatus and more precisely set its left and right horizontal.

Figure 1 schematically shows a conventional rolling mill structure.

Figure 2 shows the internal structure of the rolling mill according to the present invention.

Figure 3 shows the side structure of the rolling mill seen in the direction of the arrow III of FIG.

Figure 4 is a perspective view showing the installation state of the adjustment screw and the manual adjustment nut of the pressing device according to the present invention.

Figure 5 is an exploded perspective view showing a manual adjustment nut and bolt fastening structure according to the present invention.

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5.

* Description of the symbols for the main parts of the drawings *

20.Frame 30.Top roll

31a, 31b..top roll block 40.bottom roll

50. Driving device 60. Pressure reducing device

64L, 64R.Adjusting screw 65.Manual adjusting nut

65a.Body 65c.

65 d. Jamming groove 66. Bolt

The present invention for achieving this object is;

A lower roll having both ends rotatably disposed through a pair of lower roll blocks mounted correspondingly on both lower sides of the frame, a pair of upper roll blocks installed on the upper both sides of the frame so as to be movable up and down, and an upper roll Both ends are installed on the block, but are rotated while maintaining a constant distance from the lower roll, and disposed between the upper roll for rolling the wire rod passing between the lower roll, and the upper roll block and the lower roll block to elastically make the upper roll block upward. The rolling mill is equipped with an elastic member for supporting and a lowering device having a pair of adjusting screws that move upward and downward while rotating on both sides of the upper part of the frame when adjusting the pressing force, and the lower end is in contact with the upper part of the upper roll block. In

The pressing device is screwed to the central portion of the pair of adjusting screws, and further includes a manual adjusting nut bolted to the upper portion of the frame, and after the bolt is released, the manual adjusting nut is rotated to operate the adjusting screws. It is done.

In addition, a female threaded hole is provided at a predetermined interval so that the bolt is fastened to the frame corresponding to the manual adjustment nut, and the holes of the manual adjustment nut are drilled to extend circumferentially at a position corresponding to the female threaded holes. It is characterized by being fastened to the female threaded holes through the long holes.

In addition, the outer periphery of the manual adjustment nut is characterized in that the engaging groove for hanging the tool is formed.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, the rolling mill to which the present invention is applied is disposed on the frame 20 which is installed on the rolling stand 10, and is vertically disposed on the frame 20, and the release wire W therebetween. Passes through the upper and lower rolls 30 and 40, a driving device 50 for driving the upper and lower rolls 30 and 40 by generating power, and is installed on the upper portion of the frame 20. A pressing device 60 for adjusting the pressing force of 30 is provided.

Frame 20 is formed in a rectangular frame shape, is installed symmetrically from side to side on the rolling stand (10). A pair of lower roll blocks 41a and 41b are fixed to the lower portion of the left and right frames 20, and both ends of the lower roll 40 and the rotation shaft 42 are rotatably installed. One end of the rotary shaft 42 of the lower roll 40 is directly connected to the first universal joint 53 to be described later to receive a driving force.

In addition, a pair of upper roll blocks 31a and 31b are installed at an upper side of the left and right frames 20, and both ends of the upper shaft 30 and the rotating shaft 32 are rotatably installed. The pair of upper roll blocks 31a and 31b are mounted on the upper side of the frame 20 so as to be movable upward and downward through the guide member 21 and between the lower roll blocks 41a and 41b. It is elastically supported upward through the intervening elastic member 22. At this time, the elastic member 22 is a coil spring interposed between the lower roll blocks 41a and 41b and the upper roll blocks 31a and 31b. In addition, one end of the rotary shaft 32 of the upper roll 30 is directly connected to the second universal joint 54 to be described later to receive the driving force. Reference numerals "30a" and "40a" are molding grooves formed in the circumferential direction on the upper roll 30 and the lower roll 40.

The driving device 50 is a driving motor 51 installed on one side of the rolling stand 10 to generate power, and two output shafts positioned up and down through the internal gear train to decelerate by receiving power from the driving motor 51. It is coupled to the reducer 52 which transmits power to 52a and 52b, and the output shafts 52a and 52b of this reducer 52, respectively, and transmits rotational power to the lower roll 40 and the upper roll 30 side. The 1st universal joint 53 and the 2nd universal joint 54 are provided. At this time, the first universal joint 53 and the second universal joint 54 are arranged in parallel up and down.

And the pressing device 60 is applied to the release wire (W) by moving up and down the upper roll 30 arranged to move up and down in the left and right frame 20 corresponding to the diameter and rolling width of the release wire (W). In order to adjust the reduction force, the forward and reverse motor 61 provided in the upper portion of the frame 20, the reducer 62 for driving the drive gear 62a by decelerating and outputting the power of the forward and reverse motor 61, It consists of a pair of driven gears 63a and 63b, which rotate in engagement with both sides of the drive gear 62a, and a rotation shaft of the driven gears 63a and 63b, each of which is screwed on the upper sides of the frame 20. And a pair of adjustment screws 64L and 64R coupled. At this time, the lower ends of the adjustment screws 64L and 64R are rotated while contacting the upper portions of the upper roll blocks 31a and 31b, respectively, through the upper portion of the frame 20.

Accordingly, when the stationary motor 61 is driven in the forward direction, the pair of driven gears 63a and 63b rotates clockwise (or counterclockwise), whereby the adjusting screws 64L and 64R are also rotated. It gradually descends from the top of the frame 20 while rotating clockwise (or counterclockwise). On the other hand, when the stationary motor 61 is driven in the reverse direction, the pair of driven gears 63a and 63b rotates counterclockwise (or clockwise), whereby the adjusting screws 64L and 64R are rotated. Also rotates counterclockwise (or clockwise) and gradually rises to the top of the frame 20.

In addition, the pressing device 60 is a manual adjustment nut screwed to the center of the adjustment screw 64L (64R) exposed to the outside in the space between the upper frame 20 and the upper roll blocks (31a, 31b). 65 is further provided to finely adjust the left and right horizontal heights of the upper roll 30.

4 to 6, a female screw 65b and a bolt 66 are coupled to a central portion of the adjusting screws 64L and 64R by a central portion of the body 65 of the manual adjustment nut 65. A plurality of long holes 65c for perforating the holes are drilled. Four long holes 65c are formed in the embodiment of the present invention to form a 90-degree interval, and are perforated to extend in the circumferential direction of the body 65a of the manual adjustment nut 65. In addition, four female threaded holes 23 are formed in the ceiling of the upper part of the frame 20 corresponding to the manual adjustment nut 65 so that the bolt 66 may be fastened. These female screw holes 23 are provided at positions corresponding to the long holes 65c.

Therefore, the manual adjustment nut 65 is screwed to the center of the adjustment screw 64L (64R) and at the same time firmly fastened to the upper portion of the frame 20 through the four bolts 66, four bolts ( Loosening 66) allows a slight rotation in the clockwise or counterclockwise direction along the long hole 65c.

In addition, three locking grooves 65d extending in the vertical direction are formed at regular intervals on the outer circumference of the manual adjustment nut 65. These three locking grooves 65d are for fastening the tool to the manual adjustment nut 65 without turning.

Next, the operation of the pressing device according to the present invention configured as described above and the effects thereof will be described.

First, when the thickness of the release wire (W) is thin, the position of the upper roll 30 should be further lowered. That is, in this case, the forward and reverse motors 61 of the pressing device 60 are driven in the forward direction for a predetermined time, so that the adjustment screws 64L and 64R rotate in a clockwise direction (or counterclockwise direction) and at the same time, a manual adjustment nut. It is gradually descended from the upper portion of the frame 20 while being bitten off with the female screw 65b of 65. In addition, the pair of upper roll blocks 31a and 31b also gradually descends while compressing the elastic members 22. Therefore, the gap between the upper roll 30 and the lower roll 40 is gradually reduced, whereby a suitable pressing force is applied to the release wire W passing between the upper roll 30 and the lower roll 40.

On the other hand, when the thickness of the release wire (W) is relatively thick, the upper roll 30 should be slightly lifted. In this case, the forward / reverse motor 61 of the pressing device 60 is driven in the reverse direction for a predetermined time, so that the adjustment screws 64L and 64R are counterclockwise while being bitten away from the female screw 65b of the manual adjustment nut 65. (Or clockwise), thereby gradually rising above the frame 20. In addition, the pair of upper roll blocks 31a and 31b also gradually rises together with the adjusting screws 64L and 64R by the elastic supporting force of the elastic members 22. As a result, the upper roll blocks 31a and 31b. The upper roll 30 rotatably mounted to the upper roll 30 also gradually increases the gap between the lower roll 40 and a moderate pressing force applied to the release wire W passing between the upper roll 30 and the lower roll 40. All.

On the other hand, if both ends of the upper roll 30, that is, the horizontal horizontal is not accurate, the manual adjustment nut 65 is manually rotated in the forward or reverse direction through the tool. That is, if the bolt 66 is loosened and the manual adjustment nut 65 on one side is slightly rotated clockwise (or counterclockwise) through the tool, the adjustment screws 64L and 64R are respectively fine on the upper part of the frame 20. Comes down. In addition, the upper roll blocks 31a and 31b also come down finely while compressing the elastic member 22, and through this process, the left and right horizontal sides of the upper roll 30 can be more accurately aligned. On the other hand, when the manual adjustment nut 65 is rotated counterclockwise (or clockwise), the adjustment screws 64L and 64R rise slightly above the frame 20, which causes the upper roll blocks 31a and 31b to rise. ) Also rises finely through the elastic member (22).

In this way, after setting the right and left horizontally of the upper roll 30 and tightening the bolt 66 again, the manual adjustment nut 65 is maintained firmly fixed to the frame 20. At this time, the manual adjustment nut 65 can be rotated without loosening the bolt 66 completely because the long hole 65c extends in the circumferential direction.

As described in detail above; According to the rolling roll pressing apparatus of the rolling mill according to the present invention, when adjusting the pressing force, the upper and lower rolls are moved up and down while rotating on both sides of the frame, and the lower end is provided with a pair of adjusting screws for moving the upper roll block up and down. At the center of the adjusting screws, the screw is coupled to each other and a manual adjustment nut bolted to the upper portion of the frame is installed. Therefore, loosen the bolt and rotate the manual adjustment nut to operate the adjustment screw, the left and right height of the upper roll block is more finely adjusted, there is an effect that can accurately set the horizontal level of the upper roll. In addition, due to such an effect, it is possible to apply a pressing force to the release wire uniformly, there is an advantage that the rolling precision is also improved.

Claims (3)

A lower roll 40 having both ends rotatably disposed through a pair of lower roll blocks 41a and 41b mounted correspondingly to both lower sides of the frame 20, and up and down on both sides of the upper portion of the frame 20. A pair of upper roll blocks 31a and 31b, which are installed to be movable, and both ends of the upper roll blocks 31a and 31b may be installed to rotate while maintaining a constant distance from the lower roll 40. It is disposed between the upper roll 30 for rolling the wire rod W passing through the lower roll 30, and the upper roll blocks 31a, 31b and the lower roll blocks 41a, 41b. An elastic member 22 for elastically supporting the upper roll blocks 31a and 31b to the upper side, and the upper and lower roll blocks 31a and lower while rotating on both sides of the upper part of the frame 20 when adjusting the pressing force. The pressing device 60 having a pair of adjusting screws 64L and 64R for moving the upper roll blocks 31a and 31b up and down in contact with the upper portion of the upper portion 31b). In the spring rolling mill, The pressing device 60 is screwed to the central portion of the pair of adjusting screws 64L, 64R, respectively, and the manual adjustment nut 65 fastened to the upper portion of the frame 20 by bolts 66. Further, the rolling roll reduction device of the rolling mill, characterized in that for operating the adjusting screw (64L) (64R) by rotating the manual adjustment nut (65) after loosening the bolt (66). The method of claim 1, Female screw holes 23 are provided at regular intervals in the frame 20 corresponding to the manual adjustment nut 65 so that the bolts 66 are fastened. Long holes 65c are drilled in the body 65a of the manual adjustment nut 65 to extend in the circumferential direction at positions corresponding to the female screw holes 23, The bolt 66 is a rolling roll reduction device of the rolling mill, characterized in that fastened through the long holes (65c) to be fastened to the female screw hole (23). The method of claim 2, Rolling roll reduction apparatus of the rolling mill, characterized in that the engaging groove (65d) for engaging the tool is formed on the outer circumference of the manual adjustment nut (65).