KR20010100515A - Apparatus for adjusting the gap in roll chock - Google Patents

Abstract

The present invention relates to a device that can easily adjust the distance between the work roll choke (Roll Chock) in the rolling mill and the inner surface of the rolling mill stand housing fixing the choke, and more particularly, to effectively prevent the vibration of the rolling mill stand, The present invention relates to a device for adjusting the gap of a rolled roll choke which is improved to prevent shortening of the service life and to improve product quality by preventing meandering of the rolled product.

The present invention is arranged between a rolling roll choke and a rolling mill stand housing in an apparatus capable of adjusting a distance between a work roll chock in a rolling mill and an inner surface of the rolling mill stand housing which fixes the choke. By providing a body portion constituting the size of the width by providing a gap adjusting device of the roll roll choke characterized in that configured to adjust the gap between the work roll choke (Roll Chock) and the inner surface of the rolling mill stand housing.

Description

Spacing device of rolling roll choke {APPARATUS FOR ADJUSTING THE GAP IN ROLL CHOCK}

The present invention relates to a device that can easily adjust the distance between the rolling roll choke (Roll Chock) and the inner surface of the rolling mill stand housing holding the choke in the rolling mill, and more particularly, to effectively prevent the vibration of the rolling mill stand, The present invention relates to a device for adjusting the gap of a rolled roll choke which is improved to prevent shortening of the service life and to improve product quality by preventing meandering of the rolled product.

In general, the rolling mill 100 has a rolling roll choke 130 mounted on the inner side of the housing 120 of the stand 110 disposed at the left and right sides of the rolling mill 100, as shown in FIGS. Both ends of the rolling roll 140 are inserted into the center of the 130, respectively, and smoothly rotated, so that the rolling roll choke 130 serves as a bearing.

As shown in FIG. 2, since the rolling roll chocks 130 form a pair of upper and lower pairs of rolling rolls 140 as shown in FIG. Rolling roll chokes 130 are arranged. Such rolling roll chokes 130 always form some gap t between the inner surface of the stand housing 120 (see FIG. 1). The reason is that after using the rolling roll 140 for a certain period of time, the rolling roll 140 is replaced. In this case, a certain amount of the initial interval t is always required in consideration of the interference with the stand housing 120. This spacing t causes vibration of the mill stand during the rolling operation, thereby shortening the early life of the machine and causing quality defects as meandering of the rolled product.

Therefore, in the related art, in order to remove the gap t during the rolling operation, the liner 150 is integrally inserted into the gap t between the rolling roll choke 130 and the stand housing 120. This problem was solved by removing the interval t.

However, in the conventional working method as described above, since the liner 150 must be inserted every time, the load of maintenance work is increased and work productivity is lowered, and the interval t is additionally generated due to wear of the liner 150. As a result, the above problems are repeated, and when the rolling roll 140 is replaced, these liners 150 have to be removed, thereby having a very troublesome operation.

The present invention is to solve the above conventional problems, the object is to make it easy to adjust the interval between the work roll choke (Roll Chock) and the inner surface of the rolling mill stand housing fixing the choke in the rolling mill, In order to effectively prevent the vibration of the work to extend the service life of various equipment and parts, and to improve the product quality through the prevention of meandering of rolled products to improve the gap of the rolling roll choke.

1 is a plan view showing the configuration of a general rolling mill according to the prior art;

Figure 2 is a side view showing the configuration of the rolling roll choke of the general rolling mill according to the prior art;

3 is a plan view showing the configuration of a rolling mill equipped with a gap adjusting device for rolling roll chokes according to the present invention;

Figure 4 is a side view showing the rolling roll choke of the rolling mill equipped with the gap adjusting device of the rolling roll choke according to the present invention;

5 is a perspective view showing a gap adjusting device of the rolling roll choke according to the present invention;

Figure 6a) b) c) is an explanatory view showing a configuration for gradually reducing the interval between the roll roll choke (roller chock) and the rolling mill stand housing in the rolling mill equipped with the gap adjusting device of the rolling roll choke according to the present invention to be.

Explanation of symbols on the main parts of the drawings

5 ..... actuator 5a ..... working body

5b .... Load 10 ..... Body

12 ... base frame 15a, 15b ... moving plate

24 .... long groove 26 ..... long hole

29 .... Screw 42 ..... Bearing

46 .... pin 100 .... rolling mill

110 ... rolling mill stand 120 .... stand housing

130 ... Rolling Roll Choke 140 ... Rolling Roll

In order to achieve the above object, the present invention provides a roll roll choke and a rolling mill stand in an apparatus capable of adjusting a gap between a roll chock and an inner surface of a rolling mill stand housing that fixes the choke in a rolling mill. The rolled roll chocks are disposed between the housings and have a body part for adjusting the width of the roll rolls by the actuator to adjust the distance between the roll chock and the inner surface of the rolling mill stand housing. By providing a gap adjusting device.

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

As shown in FIG. 3 and FIG. 4, the rolling device choke spacing adjusting device 1 according to the present invention has a rolling mill choke 130 and a rolling mill stand fixing the choke 130. In order to adjust the distance (t) between the inner surface of the housing 120, respectively disposed between the rolling roll choke 130 and the mill stand housing 120, the width of the width is adjusted by the actuator (5) The body portion 10 is provided.

The actuator 5 is composed of a hydraulic cylinder or a pneumatic cylinder or an electric cylinder, which is embedded in the body portion 10 as shown in FIG. 5, and the body portion 10 includes the base frame 12 and its A plurality of moving plates 15a and 15b are attached to one side so as to be movable.

The interval adjusting device 1 of the rolling roll choke of the present invention includes a plurality of moving plates 15a and 15b in the base frame 12 of the body portion 10 by the actuator 5 to the base frame 12. It is configured to move along the bar, which is one side of the base frame 12 forms a flat surface (12a), the other side comprises a plurality of tapered surfaces (13a, 13b) inclined from both ends to the center, The tapered surfaces 13a and 13b are arranged to coincide with the tapered surfaces 17a and 17b of the movable plates 15a and 15b, respectively.

The tapered surfaces 13a and 13b of the base frame 12 have a narrow width at the center of the base frame 12, and a width of the base frame 12 is increased toward both sides of the base frame 12. .

The other side surfaces of the moving plates 15a and 15b are configured as the flat surface 18 which is parallel to the flat surface 12a of the base frame 12. On the other hand, a plurality of screw holes 22 are formed in the tapered surfaces 13a and 13b of the base frame 12 at regular intervals, respectively, and long grooves are formed in the moving plates 15a and 15b at corresponding positions. 24 and long holes 26 are formed in succession. In addition, a step 28 is formed between the long groove 24 and the long hole 26, respectively, and the screw hole 22 of the base frame 12 is formed from the long groove 24 through the long hole 26. The head 29a of the fixing bolt 29 to be screwed in close contact.

Accordingly, the movable plates 15a and 15b are in close contact with the base frame 12 by fixing bolts 40 which fix them to the base frame 12, and are in tape contact surface 13a with each other. 13b) 17a and 17b are movable along. On the other hand, the body portion 10 is equipped with an actuator (5) between the moving plate (15a) (15b), that is, the central one side of the body portion 10, the actuator (5) is respectively The rod 5b protruding from the actuating body 5a and the rear end of the actuating body 5a are connected to one side of the moving plates 15a and 15b to actuate the actuator 5 to actuate the rod 5b from the actuating body 5a. When 5b is extended, the movable plates 15a and 15b are moved to both ends on the base frame 12. When the rod 5b is shortened, the movable plates 15a and 15b are moved to the base frame 12. ) To the center side.

And, as shown in FIG. 5, the actuators 5 are disposed between the moving plates 15a and 15b to operate simultaneously, thereby moving the moving plates 15a and 15b simultaneously. The front end of the rod 5b of the actuator 5 and the rear end of the operating body 5a respectively insert a bearing 42, and the bearing 42 is formed on one side of the moving plates 15a and 15b, respectively. The pins 46 formed by traversing the grooves up and down are inserted to be inserted.

On the other hand, the base frame 12 is formed by passing through a plurality of holes 47 into which the bolt 40 can be inserted so that its flat surface is fixed to the inner surface of the rolling mill stand housing 120, respectively.

Reference numeral 60 is a power supply hose or flexible conduit of the actuator 5.

In the gap adjusting device 1 of the rolling roll choke according to the present invention configured as described above, the flat surface 12a of the base frame 12 is in close contact with the inner surface of the mill stand housing 120, respectively, as bolts 40, respectively. It is fixed. Accordingly, as shown in FIGS. 3 and 4, four are respectively disposed between the rolling roll choke 130 and the rolling mill stand housing 120, and in this case, the moving plates mounted on the respective base frames 12 ( 15a) and 15b are disposed on the upper rolling roll choke 130 and the lower rolling roll choke 130, respectively.

Referring to the operation of the present invention step by step in accordance with Figure 6 as follows.

As shown in Figure 6a), the gap adjusting device 1 of the rolling roll choke according to the present invention is disposed between the rolling roll choke 130 and the rolling mill stand housing 120, respectively. In this case, since the actuator 5 is not in an operating state, the rods 5b are inserted into the body 5a side, and the movable plates 15a and 15b are positioned at the center side of the base frame 12. The width of 10 is less than the distance t between the rolling roll choke 130 and the rolling mill stand housing 120.

However, in order to remove the distance t between the rolling roll choke 130 and the rolling mill stand housing 120 by increasing the width of the body 10 for the rolling mill 100 to operate the actuator 5. do. Therefore, the actuator 5 is supplied with a working fluid so that the rod 5b on one side is drawn out from the operating body 5a, and the withdrawal of the rod 5b moves the moving plates 15a and 15b of the base frame 12. It moves on the tapered surfaces 13a and 13b and pushes it up to both ends of the base frame 12, and the movement of such moving plates 15a and 15b is performed by the tapered surfaces 13a, 13b and 17a (interviewed with each other). 17b) greatly increases the width of the body portion 10. Thus, the distance t between the rolling roll choke 130 and the rolling mill stand housing 120 is eliminated due to the position of the moving plates 15a and 15b.

In addition, the withdrawal of the rod 5b also moves the moving plates 15a and 15b connected to the remaining working body 5a as shown in FIG. 6c, and accordingly, the corresponding roll roll choke ( 130 and the distance t between the mill stand housing 120 is removed.

According to the present invention as described above, by operating the actuator (5) made of a hydraulic cylinder, pneumatic cylinder or electric cylinder built in the body portion 10 and withdrawing the rod 5b (moving plate 15a) ( 15b) advances the width of the body portion 10, and removes the gap t between the rolling roll choke 130 and the rolling mill stand housing 120.

On the other hand, when the rolling operation is completed in the above state to replace the rolling roll 140, etc., the interval t between the rolling roll choke 130 and the rolling mill stand housing 120 is required. At this time, by operating the actuator 5 to pull the pulled rod (5b) as described above, the moving plate (15a) (15b) is moved to the center of the body portion 10 as shown in Figure 6a) and rolled The gap t between the roll choke 130 and the mill stand housing 120 is formed.

Therefore, in the present invention, when the rolling roll 140 is replaced, a larger gap t may be secured, thereby greatly reducing the time required for replacing the roll due to equipment interference, thereby contributing to productivity improvement, and the liner 150 as in the related art. There is no need to install), which can reduce the cost of maintenance materials, and the maintenance work is done quickly, which has a great effect on reducing labor costs and repair time.

Further, during rolling, the gap t between the rolling roll choke 130 and the rolling mill stand housing 120 may be completely removed to prevent vibration reduction of the rolling mill, extension of equipment life, and product meandering.

According to the present invention as described above, in the rolling mill the interval t between the work roll chocks (130) and the inner surface of the rolling mill stand housing (120) holding the chocks (130) By operating the actuator (5) mounted in the center of the can be easily adjusted, it effectively prevents the working vibration of the rolling mill during the rolling work to extend the durability life of various equipment and parts. Then, the rolling roll choke 130 is firmly fixed on the rolling mill stand 120 to achieve meandering prevention of the rolled product and to improve the product quality.

Claims (3)

In a device that can adjust the distance between the work roll chocks (roller chock) in the rolling mill and the inner surface of the rolling mill stand housing fixing the choke, The roll roll choke 130 and the rolling mill stand housing 120 are disposed between the roll chock 120 and the body 10 having the size of the width controlled by the actuator 5. And an interval adjusting device of the rolling roll choke, characterized in that configured to adjust the interval (t) between the inner surface of the rolling mill stand housing (120). According to claim 1, wherein the body portion 10 has a base frame 12 and a plurality of moving plates (15a) (15b) attached to each side so as to be movable, a plurality of in the base frame 12 Moving plate (15a) (15b) of the rolling roll choke gap adjusting device, characterized in that configured to move along the base frame (12) by the actuator (5) to adjust the width of the body portion (10). The method of claim 2, wherein a plurality of tapered surfaces 13a, 13b, 17a, and 17b inclined from both ends to the center are formed between the base frame 12 and the moving plates 15a and 15b. A plurality of screw holes 22 are formed in the tapered surfaces 13a and 13b of the base frame 12 at predetermined intervals t, respectively, and corresponding grooves 24 are provided in the moving plates 15a and 15b corresponding thereto. And long holes 26 are formed in succession, and are moved by fixing bolts 29 which are screwed into the screw holes 22 of the base frame 12 through the long holes 26 from the long grooves 24. The plate (15a) (15b) is moved to the base frame (12) while being closely fixed fixed to the rolling roll choke.