JP2004090019A - Roller guide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To always accurately guide a rolling mill by preventing the wear of pressing surfaces between a roller holder and a center distance adjusting member. <P>SOLUTION: A wear-resisting plate 32 restraining the rotation is inserted between a pressure screw 33 provided at the other end of a roller holder 2 and the center distance adjusting member 31 which is moved back and forth in the direction of the pass line 5 of a rolled stock while being rotated, then the plate is made to slide with this center adjusting member over the whole surface. Then, pressure per unit area applied to the center distance adjusting member 31 is remarkably reduced and the wear of the center distance adjusting member is prevented. Because the wear-resisting plate 32 and the pressure screw 33 are not mutually rotated when adjusting the center distance, the wear of this wear-resisting plate caused by pressure of the pressure screw 33 is prevented. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a roller guide device for guiding a rolled material to a rolling mill, and more particularly, to a roller guide device capable of adjusting a distance between guide rollers according to a cross-sectional size of the rolled material.
[0002]
[Prior art]
When a bar-shaped rolled material is rolled by a rolling mill, a roller guide device for accurately guiding the rolled material to the rolling mill is provided at the entrance of the rolling mill. Regarding this roller guide device, a roller guide device capable of accurately and quickly adjusting the interval between guide rollers according to the difference in the cross-sectional size of a rolled material guided to a rolling mill has already been disclosed in Japanese Patent Application Laid-Open No. 10-180336. ing.
[0003]
As shown in FIG. 8, this conventional roller guide device is configured such that a plurality of roller-holders 302 provided with guide rollers 304 at their tips are arranged at equal intervals on a circumference and surround a rolled material to be guided. It is. The roller holder 302 is rotatably supported about a fulcrum pin 303. When the other end of the roller holder is pushed in the traveling direction of the rolled material (F direction shown in FIG. 8), the guide roller 304 The configuration is such that the interval is narrow (S direction shown in FIG. 8).
[0004]
The other end of the roller-holder 302 is constantly pressed against one side surface of the center adjustment nut 309 by a tension spring 308. A female screw 309 a is formed on the inner periphery of the center adjustment nut 309, and is screwed with a male screw 301 a formed on the guide box 301. Accordingly, when the center adjustment nut 309 is rotated by the worm gear 310, the center adjustment nut moves forward and backward along the traveling direction of the rolled material while being screwed with the male screw 301a formed in the guide box 301, and the roller-holder 302 is rotated. Is pushed or pulled to rotate the roller holder 302 about the fulcrum pin 303 to adjust the distance between the guide rollers 304.
[0005]
[Problems to be solved by the invention]
However, the conventional roller guide device described above has the following problems to be improved. That is, a pressure screw 306 is mounted on the other end of the roller holder 302 in the traveling direction of the rolled material, and the head end of the pressure screw is pressed against one side surface of the center adjustment nut 309. . The reason for pressing the side surface of the center adjustment nut 309 via the pressure screw 306 is that the gap between the guide rollers 304 is independently adjusted for each roller-holder 302 by changing the screwing depth of the pressure screw. This is to make it possible.
[0006]
Therefore, the head of the pressure screw 306 is always in point contact with one side surface of the center adjustment nut 309, and the frictional force at the time of center adjustment and the reaction force from the rolled material at the time of rolling are applied to this point contact portion. Concentration and the point contact portion is easily worn. In particular, at the time of center-to-center adjustment, the head of the pressure screw 306 and one side surface of the center-to-center adjustment nut 309 slide while rotating in the circumferential direction while receiving the reaction force of the tension spring 308. Due to the point contact with the head, circumferential wear is easily generated on one side surface of the inter-core adjusting nut. If the wear progresses or if the degree of wear of each pressure screw 306 is not uniform, the operation of adjusting the distance between the cores may occur, or the spacing of the guide rollers 304 may not be adjusted uniformly. There was a problem that dimensional accuracy could not be obtained.
[0007]
Means disclosed in Japanese Patent Application Laid-Open No. H11-333505 can be considered as a means for preventing such abrasion and always performing accurate rolling. In this means, a receiving seat having a concave receiving surface is provided at the other end of the roller-holder and the side surface of the center adjustment nut, and a connecting rod formed between both receiving surfaces with a spherical end at both ends. It is something that connects. Therefore, the connecting rod, the other end of the roller-holder, and the side surface of the inter-core adjusting nut are in surface contact with each other by spherical surfaces. Further, when performing the center-to-center adjustment, the center-to-center adjustment nut itself is configured to move only in the axial direction without rotating. For this reason, it has a structure in which the above-mentioned abrasion hardly occurs.
[0008]
However, such a method has a problem that not only the structure becomes complicated and the manufacturing cost is increased, but also maintenance and inspection are troublesome and mechanical play is likely to occur.
[0009]
Therefore, an object of the present invention is to always guide the rolled material accurately to the rolling mill by preventing wear between the head of the pressure screw provided at the other end of the roller holder and the center adjustment nut. It is to provide a roller guide device capable of performing the above.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, a first feature of a roller guide device for guiding a rolled material to a rolling mill according to the present invention is as follows: a pressure screw provided at the other end of the roller holder; A wear-resistant plate is inserted between the center-adjusting member that moves back and forth in the direction of the pass line, the rotation of the wear-resistant plate is restrained, and the wear-resistant plate and the center-adjusting member are rotated and slid. Thus, it is possible to avoid rotational sliding between the wear-resistant plate and the pressure screw.
[0011]
That is, the roller guide device includes a guide box, a plurality of roller holders, and a center distribution adjusting unit for the roller holders. Each roller holder is rotatably provided on a guide box by a support shaft. A guide roller is rotatably provided at one end of each roller holder, and each roller holder is provided with a spring for applying a force in a direction away from the pass line of the rolled material. Also, the center distribution adjusting means rotates while screwing with a screw portion formed in the guide box, and a center adjustment member movable forward and backward in the pass line direction, and a rotation driving means for rotating the center adjustment member, A wear-resistant plate slidably in contact with one side surface of the inter-core adjusting member, and a pressure screw provided at the other end of the roller holder.
[0012]
The wear-resistant plate is connected to the guide box so that it can move back and forth in the direction of the pass line, but cannot rotate in the direction around the pass line. The head of the pressure screw is pressed against one side surface of the wear-resistant plate by a spring. By the rotation of the rotation driving means, the center adjustment member and the wear-resistant plate slidably contacting the center adjustment member move in the pass line direction and are pressed against one side surface of the wear-resistant plate. The guide roller of the roller holder is moved radially around the pass line via the pressure screw.
[0013]
By configuring the present invention in this manner, the wear-resistant plate can move back and forth in the direction of the pass line between the guide box and the rolled material, but cannot rotate in the direction around the pass line, and the distance between the center of the guide rollers is reduced. At the time of adjustment, the wear-resistant plate does not move in the circumferential direction, but moves only in the direction of the pass line of the rolled material while rotating and sliding with the inter-core adjusting member. Therefore, at the time of adjusting the center of the guide roller, the head of the pressure screw and the wear-resistant plate do not rotate and slide, so that it is possible to prevent circumferential wear of the wear-resistant plate.
[0014]
Further, since the reaction force of the pressing by the spring is applied to the entire contact surface of the abrasion-resistant plate that slidably contacts the inter-core adjusting member, the contact pressure per unit area between the two is extremely small. For this reason, at the time of center-to-center adjustment, there is almost no wear due to circumferential sliding between the center-to-center adjustment member and the side surface of the wear-resistant plate. Furthermore, when the wear-resistant plate is worn out due to long-term use, it is sufficient to replace or repair only the wear-resistant plate. Can be reduced.
[0015]
The second feature of the roller guide device according to the present invention resides in that a pressure adjusting screw provided at the other end of the roller holder and a center-to-center adjusting member that is rotated by a rotary driving unit and moves back and forth in the pass line direction of the rolled material. An object of the present invention is to insert a wear-resistant plate and detachably fix the wear-resistant plate to one side surface of the center-to-center adjusting member, thereby avoiding rotational sliding between the wear-resistant plate and the center-to-center adjusting member.
[0016]
That is, the roller guide device includes a guide box, a plurality of roller holders, and a center distribution adjusting unit for the roller holders. Each roller holder is rotatably provided on a guide box by a support shaft. A guide roller is rotatably provided at one end of each roller holder, and the roller holder is provided with a spring for applying a force in a direction away from the pass line of the rolled material. The center distribution adjusting means rotates while screwing with a screw portion formed in the guide box, and a center adjusting member movable back and forth in the pass line direction, a rotation driving means for rotating the center adjusting member, It has a wear-resistant plate detachably fixed to one side surface of the center-to-center adjustment member, and a pressure screw provided at the other end of the roller holder.
[0017]
The head of the pressure screw is pressed against one side of the wear-resistant plate by a spring. By the rotation of the rotation driving means, the center-to-center adjusting member and the wear-resistant plate fixed to the center-to-center adjusting member move in the direction of the pass line, and are pressed against one side surface of the wear-resistant plate. The guide roller of the roller holder is moved in the radial direction around the pass line via the screw.
[0018]
By configuring the invention in this way, it is possible to avoid wear of the center adjustment member, which is expensive to manufacture and repair. That is, since the inter-core adjusting member and the wear-resistant plate are fixed, sliding wear cannot occur in the inter-core adjusting member. On the other hand, on the surface where the abrasion-resistant plate and the pressure screw abut, abrasion due to circumferential sliding and abrasion due to the reaction force from the rolled material occur, but the abrasion-resistant plate can be easily replaced. Since it is possible to use both sides by turning over, the manufacturing cost and the repair cost for abrasion can be greatly reduced as compared with the conventional case where the center-to-center adjusting member is replaced or repaired.
[0019]
A third feature of the roller guide device according to the present invention is that the head of the pressure screw described in any one of the above features 1 and 2 is pressed against one side surface of the wear-resistant plate via a hemispherical bush. It is in. The spherical surface of the bushing rotatably abuts a spherical recess formed in the head of the pressure screw, while the circular flat surface of the bushing abuts one side surface of the wear-resistant plate.
[0020]
By configuring the invention in this way, point contact between the head of the pressure screw and the abutting surface of the wear-resistant plate can be avoided, and the abrasion of both contact surfaces can be further reduced. In other words, the head of the pressure screw comes into contact with the spherical concave portion formed on the head and the spherical surface of the hemispherical bush, so that the pressure screw comes into surface contact. On the other hand, the contact surface of the wear-resistant plate comes into surface contact with the circular flat surface of the bush. Therefore, the pressure per unit area of the contact surface between the head of the pressure screw and the wear-resistant plate can be greatly reduced, and wear of the contact surface can be prevented.
[0021]
The reason why the hemispherical bush is adopted is as follows. In other words, when adjusting the distance between the cores, the head of the pressure screw rotates around the support point of the roller holder, so that the parallelism between the top surface of the head of the pressure screw and the contact surface of the wear-resistant plate. Slightly changes. Therefore, a circular flat portion of a hemispherical bush is brought into contact with one side surface of the wear-resistant plate to make it movable while always maintaining surface contact, while a spherical concave portion is formed on the head of the pressure screw. This is because the spherical surface portion of the bush is brought into contact with the bush so as to be able to cope with the above-described change in the parallelism while always maintaining the surface contact. In addition, such a hemispherical bush is extremely easy to manufacture and requires a low manufacturing cost.
[0022]
A fourth feature of the roller guide device according to the present invention is the head of the pressure screw according to any one of the features 1 to 2, wherein a portion abutting on one side surface of the wear-resistant plate has a spherical surface having a different radius. It has a shape in which at least two or more are combined, and this shape is configured so that the ratio of the amount of front-rear movement of the center adjustment member to the amount of movement of the guide roller interval is constant.
[0023]
That is, the radial interval between the guide rollers changes through the rotation of the roller holder due to the forward and backward movement of the wear-resistant plate. When the roller holder rotates, the radial position of the head of the pressure screw that comes into contact with the wear-resistant plate is changed. Moves up and down, albeit slightly. In addition, since the contact point between the roller holder and the rolled material rotates around the rotation axis of the roller holder, as the contact point rotates and moves away from the center axis of the rolled material, the contact point for the same rotation angle (rolling) increases. The amount of vertical movement (relative to the central axis of the material) is reduced. Therefore, as the roller holder rotates and the contact surface with the wear-resistant plate moves away from the central axis, the amount of radial movement of the guide roller with respect to the amount of longitudinal movement of the center-to-center adjusting member decreases. This will be described later in detail.
[0024]
Therefore, the present invention provides a method for moving the wear-resistant plate back and forth and moving the guide roller interval even when the roller holder rotates and the contact point between the head of the pressure screw and the wear-resistant plate changes in the radial direction. The shape of the head of the pressure screw is configured so that the ratio is always constant. Therefore, when guiding rolled materials of different sizes, it is necessary to adjust the center of the guide roller to match the size, but in that case, the size, that is, in proportion to the difference in the center distance, Since it is sufficient to adjust the amount of forward and backward movement of the center adjustment member, the center adjustment can be performed easily and accurately.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
The roller guide device shown in FIG. 1 includes a guide box 1 (indicated by reference numerals in the upper right of FIG. 1), three roller holders 2 (indicated by reference numerals below 1), and a center swing of the roller holders. And a minute adjusting means 3 (a reference numeral is shown at the upper left of FIG. 1). Each roller holder 2 is provided on the guide box 1 so as to be rotatable by a support shaft 23. At one end of each roller holder 2, a guide roller 21 is rotatably supported by a rotating shaft 22. Each of the roller holders 2 is arranged at a circumferential interval of 120 degrees around the pass line 5 of the rolled material. Each of the roller holders 2 is connected between the support shaft 23 and the guide roller 21 with a helical spring 24 that pushes up the guide roller in a direction away from the pass line 5 of the rolled material.
[0026]
The center distribution adjusting means 3 rotates while being screwed with the female screw 1a formed in the guide box 1, and is capable of moving back and forth in the direction of the pass line 5 of the rolled material. , A disk-shaped wear-resistant plate 32 slidably in contact with one side surface of the center-to-center adjusting member, and a pressure screw screwed into a female screw 26 formed at the other end of the roller holder 2. 33. The pressure screw 33 is locked by a nut 35 at a predetermined screwing depth position. The contact surface between the center adjustment member 31 and the wear-resistant plate 32 is finished so as to facilitate the mutual sliding rotation in the circumferential direction at the time of center adjustment.
[0027]
On one side surface of the wear-resistant plate 32, two columnar horizontal projections 32a are formed with the pass line 5 of the rolled material as the axis of symmetry. On the other hand, a projection 1b having a circular hole at the center is formed in the guide box 1 at a position facing the horizontal projection 32a, and the horizontal projection 32a is inserted into the circular hole movably in the front-rear direction. ing. Therefore, the wear-resistant plate 32 can move back and forth with respect to the guide box 1 in the direction of the pass line 5 of the rolled material, but its rotation is restricted in the direction around the pass line.
[0028]
The head 33 a of the pressure screw 33 is formed in a spherical shape, and is pressed against one side surface of the wear-resistant plate 32 by the pushing force of the spring 24. The rotation drive means 4 includes a drive shaft 41 and a spur gear 42 supported by the drive shaft, and is housed in a case 43 provided in the guide box 1. The spur gear 42 meshes with a spur gear 31b formed on the outer periphery of the center adjustment member 31. A male screw 31 a is formed on the other outer periphery of the center gap adjusting member 31, and is screwed with a female screw 1 a provided on the guide box 1.
[0029]
Therefore, at the time of center adjustment, when the drive shaft 41 is rotated from outside and the center adjustment member 31 is rotated, the center adjustment member rotates while being screwed with the female screw 1 a formed in the guide box 1. Then, it moves back and forth in the direction of the pass line 5 of the rolled material. Since the rotation of the wear-resistant plate 32 abutting on one side surface of the center-adjustment member 31 is restricted by the projection 1b formed on the guide box 1, the wear-resistant plate 32 slides circumferentially with the center-adjustment member. , And moves back and forth only in the direction of the pass line 5 of the rolled material.
[0030]
When the wear-resistant plate 32 moves back and forth in the direction of the pass line 5, the other end of the roller holder 2 pressed by the force of the spring 24 through one side of the wear-resistant plate via the pressure screw 33 moves back and forth. I do. Therefore, the roller holder 2 rotates about the support shaft 23 to increase or decrease the center distance of the guide roller 21. In addition, by adjusting the rotation of the pressure screw 33 screwed to the other end of the roller holder 2, the center distance of each guide roller 21 can be individually increased or decreased.
[0031]
Therefore, the wear-resistant plate 32 does not rotate during the center-to-center adjustment, so that sliding wear of the pressure screw 33 with the head 33a does not occur. As described above, the inter-core adjusting member 31 and the wear-resistant plate 32 rotate and slide, but since the pressing force per unit area is extremely small, there is no sliding wear between them.
[0032]
Next, another embodiment will be described with reference to FIG. Note that each component is indicated by a reference number obtained by adding 100 to the reference number of the corresponding part shown in FIG. In this roller guide device, a wear-resistant plate 132 having a circular ring shape with a rectangular cross section is detachably connected to a side surface of a flange portion formed on the center adjustment member 131 by a screw 136. Therefore, when the center adjustment member 131 is rotated by the rotation driving means 104 and moves back and forth while screwing with the female screw 101a formed in the guide box 101, the wear-resistant plate 132 also moves back and forth while rotating together. Therefore, at the time of center-to-center adjustment, the head 133 a of the pressure screw 133 moves back and forth while rotating and sliding on the wear-resistant plate 132. Subsequent operation is the same as described above.
[0033]
Therefore, since the center adjustment member 131 and the wear-resistant plate 132 do not rotate with respect to each other, wear does not occur on these contact surfaces. On the other hand, when the wear-resistant plate 132 is worn by sliding with the head 133a of the pressure screw 133, it can be easily replaced simply by removing the screw 136. Also, by forming a female screw hole for attaching the screw 136 on the back surface, if one surface is worn, it can be replaced with the opposite surface and reused. Further, since the wear-resistant plate 132 is made of a cylindrical ring and can be manufactured at low cost, the replacement cost can be significantly reduced as compared with the inter-core adjusting member 131 having a complicated shape.
[0034]
Next, still another embodiment of the present invention will be described with reference to FIGS. Each component is indicated by a reference number obtained by adding 200 to the reference number of the corresponding part shown in FIG. This roller guide device employs a pressure screw 233 in which a spherical concave portion 233b is formed on a head portion 233a, instead of the pressure screw 33 of the roller guide device shown in FIG. The bush 234 having a shape is inserted.
[0035]
That is, the spherical surface 234 a of the bush 234 is rotatably abutted against the spherical concave portion 233 b formed on the head 233 a of the pressure screw 233, while the circular flat surface 234 b of the bush 234 is one side of the wear-resistant plate 232. Is in contact with Therefore, even when the roller holder 202 rotates about the support shaft 223 and the head 233a of the pressure screw 233 moves in the vertical direction in FIG. 3 during the center-to-center adjustment, the spherical surface 234a of the bush 234 and As the spherical concave portion 233b rotates and slides, the circular flat surface 234b of the bush and one side surface of the wear-resistant plate 232 always maintain surface contact. Therefore, the wear of the wear-resistant plate 232 can be significantly reduced.
[0036]
Next, FIG. 5 shows the heads 33a, 133a of the pressure screws 33, 133 of the roller guide device shown in FIGS. , R2, and R3, a configuration in which three spherical surfaces are combined so that the distance between the center-to-center adjustment members 31, 131 and the distance between the guide rollers 21 is always constant. Is shown. The operation of such a shape and the manufacturing means will be described with reference to FIGS.
[0037]
The case where the head 33a of the pressure screw 33 is sharpened so as to always contact the wear-resistant plate 32 at one point P will be described with reference to FIG. In such a case, as the roller holder 2 rotates clockwise about the support shaft 23, the angle α between the horizontal movement direction S of the wear-resistant plate 32 and the axial direction of the pressure screw 33 increases. Therefore, the axial movement amount B of the pressure screw for rotating the roller holder decreases. Also, as the guide roller 21 rotates clockwise about the support shaft 23, the amount of movement V in the tangential direction is inclined, so that the amount of movement in the vertical direction is reduced. Therefore, as the contact point between the tip P of the head 33a of the pressure screw 33 and the wear-resistant plate 32 moves upward, the vertical movement amount of the roller holder 2 with respect to the same horizontal movement amount of the wear-resistant plate. Decreases. Conversely, in order to make the vertical movement amounts D1 and D2 of the roller holder 2 the same, it is necessary to increase the horizontal movement amount of the wear-resistant plate 32 from S1 to S2.
[0038]
FIG. 7 shows a means for forming the shape of the head 33a of the pressure screw 33 so that the distance of movement of the roller holder 2 is always maintained at a constant ratio with respect to the amount of horizontal movement of the wear-resistant plate 32. Show. The points 1-1, 1-2, and 1-3 are the rotation trajectories of the contact points at which the vertical movement amounts D1 and D2 of the roller holder 2 are the same. That is, as described above, in order to keep the vertical movement amount of the roller holder 2 constant, the horizontal movement amount of the contact point must be increased from S1 to S2. Here, positions where the wear-resistant plate 32 is horizontally moved by the same S are denoted as 1, 2, and 3. In this case, points 1-1, 1-2, and 1-3 are located at positions that have not yet contacted the wear-resistant plate 32.
[0039]
Therefore, the shape of the head 33a of the pressure screw 33 is formed so that the contact point when the wear-resistant plate 32 is horizontally moved from the position 1 to the position 2 becomes the point 2-2 instead of the point 1-2. I do. Also, the shape of the head 33a of the pressure screw 33 is formed so that the contact point when the wear-resistant plate 32 is horizontally moved to the position 3 is the point 3-3 instead of the point 1-3. That is, the points 1-1, 2-1 and 3-1 at which the contact points 2-2 and 3-3 are returned to the initial positions at the respective radii of rotation become the shape of the head 33a of the pressure screw 33.
[0040]
When the shape of the head 33a of the pressure screw 33 is formed in this way, at the position 1 of the wear-resistant plate 32, the contact is made at a point 1-1, and then the wear-resistant plate moves horizontally by S to position 2 Then, the pressure screw rotates upward, and the contact point moves from the point 1-2 to the point 2-2. When the position further moves horizontally by S to reach position 3, the contact point moves from point 2-3 to point 3-3. Therefore, if the contact is made at points 2-2 and 3-3 at positions 2 and 3 of the wear-resistant plate 32, the point 1-1 can be moved to the points 1-2 and 1-3. It is possible to make the distance of the interval constant.
[0041]
When the shape of the head 33a of the pressure screw 33 is actually formed, the contact points that set the movement amount S to be minute and make the movement amount of the interval of the roller holder 2 constant at each position are sequentially plotted. Formed. Then, an arc that smoothly connects the plotted points is selected, and the head 33a of the pressure screw 33 is formed into a shape combining spherical surfaces having different radii as shown in FIG.
[0042]
The number of roller holders 2 is not limited to three, and may be more. Further, the arrangement of the roller holders 2 may not be equidistant in the circumferential direction, but may be axially symmetric with respect to the pass line 5 of the rolled material.
[0043]
【The invention's effect】
First, at the time of adjusting the center of the guide roller, by stopping rotation of the wear-resistant plate, circumferential sliding with the head of the pressure screw pressed by the wear-resistant plate can be avoided. In addition, circumferential wear of the wear-resistant plate due to the head of the pressure screw can be prevented. Secondly, the wear-resistant plate is detachably fixed to one side surface of the center-to-center adjusting member, thereby avoiding rotational sliding between the wear-resistant plate and the center-to-center adjusting member, and leading to high manufacturing and repair costs. Wear of the member can be prevented.
[0044]
Third, by configuring the wear-resistant plate and the head of the pressure screw so that they are always pressed in a face-to-face state via a hemispherical bush sandwiched in the middle, respectively, Wear of the pressing contact portion and wear of the pressing contact portion due to the guide reaction force of the rolled material can be significantly reduced. Further, such a hemispherical bush is extremely easy to manufacture and has a simple assembling structure, so that manufacturing costs and assembly and disassembly costs can be reduced. Fourth, even if the roller holder rotates and the radial position of the point of contact with the wear-resistant plate changes, the ratio between the forward and backward movement amount of the wear-resistant plate and the radial movement amount of the guide roller is always constant. By forming the shape of the head of the pressure screw such that the center of the guide roller can be easily and accurately adjusted.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a roller guide device.
FIG. 2 is a partial cross-sectional view of another roller guide device.
FIG. 3 is a partial cross-sectional view of another roller guide device.
FIG. 4 is an enlarged sectional view of a center distribution adjusting means using a hemispherical bush.
FIG. 5 is a partially enlarged view showing a head shape of a pressure screw in which spherical surfaces having different radii are combined.
FIG. 6 is an explanatory view of means for forming a head shape of a pressure screw.
FIG. 7 is another explanatory view of means for forming the head shape of the pressure screw.
FIG. 8 is a partial cross-sectional view of a conventional roller guide device.
[Explanation of symbols]
1,101,201 Guide box
1a, 101a, 201a female screw
1b Projection
136 screw
2,102,202 Roller holder
21,121,221 Guide roller
23, 123, 223 Support shaft
233b recess
234 bush
234a spherical surface
234b circular plane
24,124 spring
3,103,203 Center distribution adjustment means
31, 131, 231 Inter-core adjusting member
32,132,232 Wear-resistant plate
32a horizontal projection
33,133,233 Pressure screw
33a, 133a, 233a Head
4,104,204 rotation drive means
5,105,205 Rolled material pass line

Claims (4)

A roller guide device for guiding a rolled material to a rolling mill,
A guide box (1), a plurality of roller holders (2), and a center distribution adjusting means (3) for the roller holders;
Each of the roller holders (2) is rotatably provided on the guide box (1) by a support shaft (23),
A guide roller (21) is rotatably provided at one end of each of the roller holders (2),
Each of the roller holders (2) is provided with a spring (24) for applying a force in a direction away from the pass line (5) of the rolled material,
The center distribution adjusting means (3) rotates while screwing with the threaded portion (1a) formed in the guide box (1), and can be rotated back and forth in the direction of the pass line (5). 31), a rotation driving means (4) for rotating the center-to-center adjusting member, a wear-resistant plate (32) slidably in contact with one side of the center-to-center adjusting member, and a roller holder (2). A pressure screw (33) provided at the other end,
The wear-resistant plate (32) is connected to the guide box (1) so as to be able to move back and forth in the direction of the pass line (5), but to be unable to rotate around the pass line. Yes,
The head (33a) of the pressure screw (33) is pressed against one side surface of the wear-resistant plate (32) by the spring (24).
The rotation of the rotation drive means (4) moves the center adjustment member (31) and the wear-resistant plate (32) slidably in contact with the center adjustment member in the direction of the pass line (5). The guide roller (21) of the roller holder (2) is moved in the radial direction around the pass line (5) via the pressure screw (33) pressed against one side of the wear-resistant plate. A roller guide device, characterized in that: A roller guide device for guiding a rolled material to a rolling mill,
A guide box (101), a plurality of roller holders (102), and a center distribution adjusting means (103) for the roller holders;
Each of the roller holders (102) is rotatably provided on the guide box (101) by a support shaft (123).
At one end of each of the roller holders (102), a guide roller (121) is provided rotatably,
Each of the roller holders (102) is provided with a spring (124) for applying a force in a direction away from the pass line (105) of the rolled material,
The center distribution adjusting means (103) is a screw member (101a) formed on the guide box (101), and is rotated while being screwed thereto, and is a center adjustment member ( 131), a rotation driving means (104) for rotating the center adjustment member, a wear-resistant plate (132) detachably fixed to one side surface of the center adjustment member, and the roller holder (102). And a pressure screw (133) provided at the other end of the
The head (133a) of the pressure screw (133) is pressed against one side surface of the wear-resistant plate (132) by the spring (124).
The rotation of the rotation drive means (104) causes the center adjustment member (131) and the wear-resistant plate (132) fixed to the center adjustment member to move in the direction of the pass line (105). Moving the guide roller (121) of the roller holder (102) in the radial direction about the pass line (105) via the pressure screw (133) pressed against one side of the wear-resistant plate. Characterized roller guide device. The head of the pressure screw according to any one of claims 1 to 2, which is pressed against a side surface of the wear-resistant plate via a hemispherical bush,
A roller guide device, wherein a spherical surface of the bush rotatably abuts a spherical concave portion formed on a head of the pressure screw, and a circular flat surface of the bush abuts one side surface of the wear-resistant plate. . In any one of claims 1 to 2, a portion of the head of the pressure screw, which is in contact with one side surface of the wear-resistant plate, has a shape formed by combining at least two or more spherical surfaces having different radii,
The roller guide device is characterized in that the above-mentioned shape is configured such that a ratio between a forward and backward movement amount of the center adjustment member and a movement amount of the guide roller interval is constant.

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