KR100643368B1 - Apparatus for holding rolls in wire rod mill - Google Patents

Abstract

An apparatus for fixing caliber rolls of a roughing mill in the wire rod rolling process, which clamps chock fixing members of the caliber rolls easily and promptly when changing the caliber rolls, solidly clamps the chock fixing members of the caliber rolls without generating relaxation of the caliber roll chock clamp when an axial power of the caliber rolls is generated, and can fix the chock fixing members sufficiently when an amount of caliber roll chocks led into a roughing mill housing varies, is provided. An apparatus(1) for fixing caliber rolls(205) of a roughing mill(210) in the wire rod rolling process comprises: a fixing part comprising disc clamp members which are rotatably mounted on an outer portion of a roughing mill housing(217), which has a curved surface formed at one side thereof to fix caliber roll chock fixing members(233) to the roughing mill, and which has cutting parts formed at the other side thereof to separate the caliber roll chock fixing members from the roughing mill; a drive part(40) comprising power means(42) for imparting rotary power to the disc clamp members of the fixing part; and a power transmission part for transmitting power of the drive part to the disc clamp members, wherein the disc clamp members are respectively disposed at both sides of the caliber roll chock fixing members to dismantle or clamp the caliber roll chock fixing members relative to the roughing mill by power.

Description

Coarse rolling mill ball roll fixing device of wire rod rolling process {Apparatus For Holding Rolls In Wire Rod Mill}

1 is a process explanatory diagram showing a wire rod rolling process of an ironworks.

2 is a cross-sectional view showing a rough mill of a wire rod rolling process according to the prior art.

Figure 3 is a side view showing a rough mill ball roll fixing device according to the prior art.

Figure 4 is a side view illustrating the working method of a rough rolling mill ball roll fixing device according to the prior art.

Figure 5 is a side view showing a rough rolling mill ball roll fixing device according to the present invention.

6 is a side view showing a state for releasing the ball roll choke holding member in the rough rolling mill ball roll fixing device according to the present invention.

Figure 7 is a side view showing a state for fixing the ball roll choke fixing member in the rough rolling mill ball roll fixing device according to the present invention.

8 is a cross-sectional view of the rough mill ball roll fixing device according to the present invention.

9 is a longitudinal sectional view of the rough mill ball roll fixing device according to the present invention.

10 is a cross-sectional view of the fixing portion of the rough rolling mill fixed roll device according to the present invention.

11 is an exploded perspective view of the fixing part of the rough rolling machine ball roll fixing device according to the present invention.

12 is a plan view showing a state for releasing the ball roll choke holding member in the rough rolling mill ball roll fixing device according to the present invention.

13 is a plan view showing a state for fixing the ball roll choke fixing member in the rough rolling mill ball roll fixing device according to the present invention.

       <Description of the symbols for the main parts of the drawings>

1 .... crude rolling mill ball roll fixing device of wire rod rolling process according to the present invention

10 .... Fixed part 12 .... Surface part

14 .... cutting part 16 .... disc clamp member

18 .... Base 21 .... Fixed shaft

23 .... Fixing bolt 27 .... Fixing member

29 .. Fixing nut 40 .... Drive part

42 .... power means 50 .... power units

52 .... Worm screw 54 .... Bearing block

56 .... Worm Gear 70 .... Stopper

200 .... Wire Rod Rolling Process 202 .... Rough Rolling Process

205 .... ball roll 210 .... roughing mill

215 .... Choke 217 .... Housing

230 .... ball roll retainer 233 .... ball roll chock retainer

235 .... choke clamp 241 .... clamp body member

244 .... hinge 245 .... spanner

247 .... liner

d .... Distance between cut and center of disc clamp member

D ... Radius of disc clamp member

t .... Starting point thickness of cut in disc clamp member

T ..... Thickness of the curved part of the disc clamp member

The present invention relates to a ball roll fixing device used in a rough rolling mill of a wire rod rolling process, and more particularly, by using a disc clamp member and a power means for dismantling / fastening a ball roll choke fixing member during a ball roll replacement operation. The present invention relates to a rough rolling machine ball roll fixing device of a wire rod rolling process that can easily dismantle / fasten a choke, greatly reduce work time, increase work productivity, and greatly reduce a worker's work load.

In general, in the rolling process of wire rods, the same rolls are formed on one roll, and the rolls of the ball rolls and the rolls of the ball rolls are moved to the adjacent rolls according to the wear of the rolls. There is a roll change.

The above rough rolled upper and lower ball rolls are made of the same ball shape, and the pairs of ball shapes are formed to face each other at precise positions, and the wire rods having a diameter of 42 to 28 mm are subjected to a continuous wire rolling mill process of repeating ellipses and rounds. Produces.

The wire rod rolling process 200 includes a rough rolling process 202 at the entrance side as shown in FIG. 1, and in this rough rolling process 202, a pair of ball rolls 205 facing each other up and down. The wire rod is rolled in the form of a ball by driving the ball roll 205 while assembling and fixing it to the rough mill 210.

Here, whether or not the center of ball center between the pair of upper and lower ball rolls 205 provided in the rough mill 210 has a very important influence on the quality of the wire rod rolling. Has a significant meaning.

Typically, the ball roll 205 used in the rough mill 210 as described above is assembled by the choke 215 of the bearing block, as shown in Figure 3 to the side of the housing 217 of the rough mill 210 It is possible to replace the ball roll by the opening and closing configuration, and to prevent the axial variability and deviation of the ball roll 205 during wire rolling to maintain a pair of ball roll 205 center center from the work path line.

The ball roll fixing device 230 of the crude rolling mill used above is required for an easy function of replacing the ball roll 205 and an important function of preventing axial variability of the ball roll 205.

As shown in FIGS. 3 and 4, in the conventional wire rough rolling ball 205 replacement operation, the fixed roll choke fixing member 233 is fixed to both sides of the opening and closing of the housing 217 of the rough rolling mill 210. The choke clamp 235 is comprised.

The choke clamp 235 is a method of assembling the hinge body 244 to the clamp body member 241, the fixing bolt 243 in the state where the choke fixing member 233 is seated between the clamp body member 241 ), The choke clamp 235 is fastened to the clamp body member 241 by the fixing bolt 243.

Therefore, the choke fixing member 233 is clamped to the clamp body member 241. At this time, since the clamp body member 241 is fixed to the housing 217 of the roughing mill 210, the ball roll choke 215 is tightened. It is fixed to the housing 217 of the rolling mill 210.

When the fixing bolt 243 is dismantled during the replacement of the ball roll 205, the choke clamp 235 is opened by the linkage of the hinge 244, so that the ball roll choke fixing member 233 is opened. Replacement operation is possible from the housing 217 of the rolling mill 210.

However, in the conventional choke clamp device 230, since the clamp fixing operation and the clamp disassembly operation are performed by the fixing bolt 243, the dismantling / fastening means of the fixing bolt 243 is usually as shown in FIG. The spanner 245 is required.

Therefore, as shown in FIGS. 3 and 4, the dismantling / fastening time of the several fixing bolts 243 is greatly delayed, thereby increasing the non-operation time, and also causing an attraction force to the spanner 245. Therefore, the load of the worker is increasing.

In addition, when an electric ball tool (not shown) is used to dismantle / fasten the fixing bolt 243, installation of the electric ball tool is cumbersome and inconvenient every time, and a great power to dismantle / fasten the fixing bolt 243. As a result, the power of the power tool is increased to increase the size of the power tool, and since the weight of the power tool is heavy, the work load is greatly increased for the use of the power tool.

In addition, in the prior art, the fixing bolt 243 dismantling / fastening method of the choke clamp 235 has a large force acting on the axiality of the ball roll 205 due to the difficulty of wire rolling during tire cord wire rolling. While the clamping bolt 243 is relaxed by the action of the axial force of the ball roll 205 and the center center of the ball roll 205 is slightly removed from the work path line, the shape of the ball rolling is generated. Since this occurs unevenly, there is a problem that the wire quality is poor.

In addition, when a part of the ball roll choke fixing member 233 is worn and the fixing of the choke clamp 235 is completed, a predetermined gap is generated between the choke fixing member 233 and the choke clamp 235, and accordingly, There arises a problem that the ball roll chocks 215 relax due to the axial action of the ball roll 205.

Therefore, as shown in FIG. 3, the liner choke fixing member 233 uses the liner 247, and when such a liner 247 wears, it is necessary to replace it every time, so the replacement work is very cumbersome.

The present invention is to solve the above-mentioned conventional problems, the object is to facilitate the fast work of clamping the choke fixing member of the ball roll during the ball roll replacement operation made quick and easy to reduce the ball roll replacement work time downtime It is to provide a rough mill ball roll fixing device of the wire rod rolling process improved to improve the productivity according to the reduction.

And another object of the present invention is the rolling workability of wire rods such as tire cord wire rod rolling, when the roll of the ball roll, when the axial power of the ball roll occurs, the relaxation of the ball roll choke clamp does not occur, the ball roll The present invention provides a coarse rolling mill ball roll fixing device of a wire rod rolling process that is improved to firmly clamp a choke fixing member.

Another object of the present invention is to provide a rough rolling machine ball roll fixing device of a wire rod rolling process that can sufficiently fix the choke holding member when the amount of the roll roll choke into the rough rolling mill housing is variable.

In order to achieve the above object, the present invention is a ball roll fixing device used in the rough rolling machine of the wire rod rolling process,

A disc clamp, which is rotatably mounted on the outer side of the housing of the rough rolling mill, on one side to form a curved portion for fixing the ball roll choke fixing member to the rough rolling mill, and on the other side a cut part for separating the ball roll choke holding member from the rough rolling mill. A fixing part having a member;

A drive portion having power means for imparting rotational force to the disc clamp member of the fixed portion; And

And a power transmission unit for transmitting the power of the driving unit to the disc clamp member, wherein the disc clamp members are disposed on both sides of the ball roll choke holding member to fix the ball roll choke to the coarse rolling mill by power. Provided is a rough rolling mill ball roll fixing device of the wire rod rolling process, characterized in that configured to disassemble or fasten the member.

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

The crude rolling mill ball roll fixing device 1 of the wire rod rolling process according to the present invention, as shown in Figure 5, is rotatably mounted on the outside of the housing 217 of the crude rolling mill 210, the ball roll choke on one side A curved portion 12 is formed to fix the fixing member 233 to the jaw mill 210. On the other side, a cut portion 14 for separating the ball roll choke fixing member 233 from the jaw mill 210 is formed. The fixing part 10 provided with the disc clamp member 16 is provided.

The disc clamp members 16 provided in the fixing part 10 are operated in conjunction with two worm screws 52 and the worm screws 52 are driven by the power means 42. The member 16, the worm screw 52, and the power means 42 are fixed to the base 18, which is fixed to the side of the housing 217 of the rough mill 210.

As shown in FIGS. 5 to 8, the fixing part 10 includes a fixing shaft 21 firmly formed on the base 18, and a worm gear 56 disposed at the lower end of the fixing shaft 21. While the disc clamp member 16 is firmly combined with the worm gear 56 by the fixing bolt 23, the fixing member 27 is closely disposed on the upper end of the disc clamp member 16.

Then, the fixing nut 29 is fastened to the end side of the fixing shaft 21 so that the disc clamp member 16 is firmly installed on the base 18. And the worm screw 52 orthogonal to the worm gear 56 is configured to interlock with each other to constitute the disc clamp member 16 of the present invention.

The power means 42 of the drive unit 40 for imparting rotational force to the disc clamp member 16 of the fixing unit 10 is preferably an electric motor.

Such an electric motor outputs a strong rotational force, the rotating shaft of which is connected to the worm screw 52, and the worm screw 52 is rotated by the bearing block 54 as shown in FIG. 9. It is supported to be possible.

The worm screw 52 and the worm gear 56 used in the above constitute a power transmission unit 50 for transmitting the power of the drive unit 40 to the disc clamp member 16.

Therefore, when the worm screw 52 is rotated, the worm gear 56 is rotated, the disc clamp member 16 fixed to the worm gear 56 is rotated, the clamping action of the disc clamp member 16 is made.

In the crude rolling mill ball roll fixing device 1 of the wire rod rolling process according to the present invention, as shown in FIG. 11, one end of the disc clamp member 16 constituting the fixing portion 10 is cut in a straight line. Cut portions 14 are formed, and the distance d between the cut portions 14 and the center of the disc clamp member 16 is made smaller than the radius D of the disc clamp member 16.

Therefore, the position of the cutting portion 14 is changed according to the rotation of the disc clamp member 16, so that the disc clamp member 16 is dismantled / fastened.

In addition, the rough rolling mill ball roll fixing device 1 of the wire rod rolling process according to the present invention more preferably has a starting point thickness t of one side of the cut portion 14 of the disc clamp member 16 is the cut portion 14 The tapered inclination is formed to be smaller than the curved portion thickness T on the opposite side of the opposing disc clamp member 16 while facing away.

Therefore, according to the rotation of the disc clamp member 16, the function of the clamp range is varied.

And the crude rolling mill ball roll fixing device 1 of the wire rod rolling process according to the invention is more preferably two disc clamp members on both sides of one ball roll choke holding member 233, as shown in FIG. (16) is preferably configured to firmly fix the ball roll choke holding member 233.

In addition, as shown in FIG. 5, in the rough rolling machine ball roll fixing device 1 of the wire rod rolling process according to the present invention, the cut portion 14 of the disc clamp member 16 is formed with the ball roll choke holding member 233. If it is rotated to the opposite side, since the curved portion 12 of the disc clamp member 16 is in close contact with the ball roll choke holding member 233, the ball roll choke 215 is a disc clamp member ( 16) is firmly fixed.

The crude rolling mill ball roll fixing device 1 of the wire rod rolling process according to the present invention configured as described above, the ball roll 205 from the housing 217 of the crude rolling mill 210 during the replacement operation of the ball roll 205 In order to pull out, as shown in FIGS. 12 to 13, the disc clamp member 16 needs to be disassembled. Thus, when the power means 42 is operated to rotate the disc clamp member 16, the worm screw 52 As the curved portion 12 of the disc clamp member 16 is rotated to the opposite side of the ball roll choke fixing member 233 as it is rotated, as shown in FIG. 6 and FIG.

Therefore, the fixing member 233 of the ball roll choke is made to be disassembled from the housing 217 of the roughing mill 210, and the drawing operation of the ball roll is performed.

On the other hand, when the drawing operation of the ball roll replacement work as described above is completed, the drive means 42 of the disc clamp member 16 is rotated to rotate the worm screw 52, and the disc clamp member 16 is shown in FIGS. 7 and 13. As shown in the figure, the curved portion 12 of the disc clamp member 16 is firmly fixed to the ball roll choke holding member 233 while in close contact with the ball roll choking holding member 233.

Since the disc clamp member 16 transmits power of the power means 42 of the driving unit 40 through the worm gear 56 and the worm screw 52 of the power transmission unit 50, the worm gear 56 Since the worm screw 52 does not rotate in reverse even when the reaction force is applied, the disc clamp member 16 is the disc clamp member 16 during wire rod rolling, such as tire cord material, which is difficult to wire rod rolling during wire rod rolling. Due to the firm holding force of), it is possible to prevent the ball roll axial fluctuation of the ball roll choke 215.

And rough rolling mill ball roll fixing device 1 of the wire rod rolling process according to the present invention, as shown in Figs. 10 and 11, when the liner 247 of the ball roll choke fixing member 233 is worn According to the rotation angle of the clamp member 16, the thickness of the disc clamp member 16 is changed into a tapered shape, so that the fixing member 233 of the roll roll choke is fastened, thereby firmly tightening the roll roll choke 215. I can keep it.

In addition, since the disc clamp member 16 is operated by two power of the disc clamp member 16 at the same time by one power means 42 and the worm screw 52, the operation time of the disc clamp member 16 is very short. In addition, since the disc clamp member 16 is operated by the power of the power means 42, the load of the worker can be greatly reduced.

And the rough rolling machine ball roll fixing device 1 of the wire rod rolling process according to the present invention, as shown in Figure 11, the stopper 70 is formed on both sides of the disc clamp member 16, such a stopper 70 They function to indicate the stop position of the disc clamp member 16 at a fixed point while the cutout portion 14 of the disc clamp member 16 maintains a constant distance from the ball roll choke fixing member 233.

That is, the stopper 70 in the stopper 70 no longer rotates so that the position of the cut portion 14 of the disc clamp member 16 is always set to be parallel to the vertical surface of the ball roll choke fixing member 233. It is.

In addition, the rough rolling machine ball roll fixing device 1 of the wire rod rolling process according to the present invention, as shown in Figure 12, between the center of the disc clamp member 16 in the cut portion 14 of the disc clamp member 16 The distance d is shorter than the distance d1 of the vertical surface of the choke roll chock holding member 233 at the center of the disc clamp member 16. Therefore, even if the cutting portion 14 of the disc clamp member 16 is rotated and positioned on the ball roll choke holding member 233, the disc clamp member 16 and the ball roll choke holding member 233 do not come into contact or interfere with each other. Free state.

On the other hand, the rough rolling machine ball roll fixing device 1 of the wire rod rolling process according to the present invention is the center of the disk clamp member 16 in the curved portion 12 of the disk clamp member 16, as shown in FIG. The inter-distance D is larger than the distance d1 of the vertical surface of the choke roll chock holding member 233 at the center of the disc clamp member 16. Therefore, when the curved portion 12 of the disc clamp member 16 is rotated and positioned on the ball roll choke holding member 233, an overlapping portion is generated between the disc clamp member 16 and the ball roll choke holding member 233. .

Therefore, the rough rolling machine ball roll fixing device 1 of the wire rod rolling process according to the present invention is the disc clamp member 16 while the curved portion 12 of the disc clamp member 16 is positioned out of the ball roll choke fixing member 233. By the curved portion 12 of the ball roll choke fixing member 233 is in close contact with the interference is fixed.

As described above, according to the present invention, when the roll is changed in the rough roll mill used in the wire rod rolling process, the roll roll choke can be easily fastened by using a disc clamp member and a power means for dismantling / fastening the ball roll chocks. And the work time is greatly shortened, which can increase productivity by reducing the downtime of the wire rod.

In addition, the choke clamp of the roll can be clamped by power instead of manual labor, thereby reducing the physical load of the operator.

Since the disc clamp member is composed of a worm gear and a worm screw, the worm screw does not reversely rotate due to the reaction force of the worm gear. Therefore, the disc clamp member is made of a wire rod such as a tire cord material having difficulty in rolling during wire rod rolling. During rolling, the rigid roll force of the disc clamp member can effectively prevent the ball roll axial fluctuation of the ball roll chocks.

Further, since the clamp member fastening of the ball roll chocks can be carried out variably according to the rotational angle of the disc clamp member, it is very advantageous in fixing work of the ball roll chocks.

While the invention has been shown and described with respect to specific embodiments thereof, it has been described by way of example only to illustrate the invention, and is not intended to limit the invention to this particular structure. Those skilled in the art will appreciate that various modifications and changes of the present invention can be made without departing from the spirit and scope of the invention as set forth in the claims below. Nevertheless, it will be clearly understood that all such modifications and variations are included within the scope of the present invention.

Claims (7)

In the ball roll fixing device used for the rough rolling machine of the wire rod rolling process, A disc clamp, which is rotatably mounted on the outer side of the housing of the rough rolling mill, on one side to form a curved portion for fixing the ball roll choke fixing member to the rough rolling mill, and on the other side a cut part for separating the ball roll choke holding member from the rough rolling mill. A fixing part having a member; A drive portion having power means for imparting rotational force to the disc clamp member of the fixed portion; And And a power transmission unit for transmitting the power of the driving unit to the disc clamp member, wherein the disc clamp members are disposed on both sides of the ball roll choke holding member to fix the ball roll choke to the coarse rolling mill by power. Rough roll mill ball roll fixing device of the wire rod rolling process, characterized in that configured to disassemble or fasten the member. The fixed roll fixing device of claim 1, wherein the fixing part is operated by interlocking two disc clamp members with one worm screw of the power transmission part. According to claim 2, wherein the fixed portion is fixed to the base fixed to the base, the worm gear is disposed on the lower end of the fixed shaft, the disc clamp member is firmly combined with the worm gear by the fixing bolt, the top of the disc clamp member Fixing member is arranged in close contact with, the fixing nut is fastened to the end side of the fixed shaft, the disk clamp member is rough rolling mill ball roll fixing device, characterized in that the base is combined to the base. The driving mechanism of claim 1, wherein the power transmission unit includes a worm screw and worm gears, and when the worm screw is rotated, the worm gear is rotated, the disc clamp member fixed to the worm gear is rotated, and the driving is performed. The rough rolling machine ball roll fixing device of the wire rod rolling process, characterized in that for transmitting the negative power to the disc clamp member. The disc clamp member of claim 1, wherein the disc clamp member of the fixing portion forms a cut portion having one end cut in a straight line, and a distance between the cut portion and the center of the disc clamp member is smaller than a radius of the disc clamp member. Cold rolling mill ball roll fixing device of wire rod rolling process. The wire clamp member according to claim 1, wherein the disc clamp member of the fixing part forms a tapered inclination in which a thickness of a starting point of one side of the cutout portion is formed to be smaller than a thickness of the curved surface side facing the cutout portion. Roughing mill ball roll fixing device in process. 7. The method of claim 5 or 6, wherein the stopper is formed on both sides of the disc clamp member, these stoppers are fixed to the rough rolling mill ball roll of the wire rod rolling process, characterized in that indicating the stop position of the disc clamp member at a certain point. Device.

Images