JP2004209493A - Detachable rest bar device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detachable rest bar device capable of enhancing the efficiency of a rolling line and reducing the cost of equipment. <P>SOLUTION: This device is provided with a pair of holding parts A consisting of a rest bar bracket 1 which is attachable to a rolling mill M and a hydraulic cylinder 2 provide to this rest bar bracket and a movable rest bar part B which is held attachably and detachably between both holding parts. The movable rest bar parts B are provided with a pair of movable rest bar main bodies 4, saddles 5 which are installed movably along a guide shaft 6 between the movable rest bar main bodies and on which a roller guide is mounted and parallel moving means by which these saddles are moved in parallel in the axial direction of the rolling rolls of the rolling mill M. A locking parts are provided in the opposed top end part of a cylinder rod and engaging parts which are engaged with the locking parts which are formed on the cylinder rod of the hydraulic cylinder 2 are provided on the outside of the movable rest bar main bodies 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a detachable rest bar device that can be used for a plurality of rolling mills.
[0002]
[Prior art]
As a conventional rest bar device, there is a technology disclosed in Japanese Patent Application Laid-Open No. H11-108144. By converting the rest bar of the conventional fixed type rest bar device into a movable rest bar, the roller guide attached to the shift base of the movable rest bar can be efficiently aligned with a predetermined caliber.
[0003]
[Problems to be solved by the invention]
In the rolling stand position of the rolling line, two rolling mills are prepared, one is used for online use, and the other is used as a preliminary rolling mill prepared in accordance with the next rolling schedule. It is customary to use.
As a method of using the rest bar device disclosed in JP-A-11-108144 to the two rolling mills, the first is a dedicated method of attaching and using separate rest bar devices to the two rolling mills, respectively. Is a combined use method in which one rest bar device is replaced with two rolling mills.
In the replacement work of the conventional rest bar device, a lot of labor is required for tightening the mounting bolts, and the crane cannot be used for other work until the mounting work of the rest bar device is completed, so the work efficiency of the factory is deteriorated. There were problems such as.
As described above, the replacement work of the rest bar device requires a large amount of labor as described above, and in addition, there is a problem that the crane operation rate is poor. Although the use of a dedicated rest bar device for each rolling mill can solve the above-mentioned problem, there is a problem that purchasing two rest bar devices increases the equipment cost.
An object of the present invention is to provide a detachable rest bar device that can increase the efficiency of a rolling line and reduce equipment costs.
[0004]
[Means for Solving the Problems]
The present invention makes it possible to detachably attach to a plurality of rolling mills so that it can be used for a plurality of rolling mills.
A first feature of the present invention resides in that a pair of holding portions attachable to a rolling mill and a movable rest bar portion detachably held by both holding portions are provided. Each of the holding units includes a mounting body for mounting to the rolling mill, and a holding body connected to the mounting body. The movable rest bar portion includes a movable rest bar main body, a saddle movably provided on the movable rest bar main body, and a saddle for mounting a rolled material guiding device, and moving the saddle in the axial direction of a rolling roll of the rolling mill. Parallel moving means are provided. The parallel moving means can adjust the position of the roller guide according to the plurality of holes of the rolling roll.
A second feature of the present invention is based on the first feature, wherein each of the attachments in the holding section is a rest bar bracket that can be attached to a rolling mill so as to face each other, and the holding body is related to a tip end of the cylinder rod. A cylinder provided with a stop portion, wherein the movable rest bar main body in the movable rest bar portion is provided with an engaging portion engageable with the locking portion of the holding body, and the parallel moving means is provided in the axial direction of the rolling roll. A worm wheel and a worm meshing with the worm wheel.The guide shaft is supported by the movable rest bar body and is inserted through the saddle. The worm wheel is attached to the saddle, and the screw shaft is supported by the movable rest bar body. Meshes with a male screw portion of the shift, the worm is in place in each other and provided on the drive shaft of the rotary drive unit that is provided in the saddle meshes with the worm wheel.
The third feature of the present invention is based on the second feature, and the cylinder in the holding portion is provided with a disc spring for pressing the locking portion of the holding portion against the engaging portion of the movable rest bar portion inside the cylinder. It is a hydraulic cylinder that can be released from pressing against the movable rest bar portion against the pressing force of the disc spring.
A fourth feature of the present invention is based on any one of the first to third features, wherein a saddle clamp capable of fixing a saddle to a movable rest bar body is provided in the movable rest bar portion.
A fifth feature of the present invention is based on any one of the first to fourth features, and includes a front-rear moving portion for moving the movable rest bar portion along a direction intersecting the axial direction of the rolling roll. The front-rear moving unit is a back-and-forth moving mount provided on the movable rest bar unit, a receiving stand capable of moving and mounting the back-and-forth moving mount, and the back-and-forth moving mount in the front-rear direction with respect to the rolling mill. It is provided with forward and backward moving means for enabling movement, and joint means for connecting the forward and backward moving means to the movable rest bar portion.
The sixth feature of the present invention is based on the fifth feature, wherein the forward / backward moving means is a hydraulic cylinder, and a joint portion is provided at a distal end portion of a cylinder rod of the hydraulic cylinder. The joint is connected to a joint receiving portion provided on the gantry, and the joint means and the joint receiving portion constitute joint means.
[0005]
[Action]
A movable rest bar body of a movable rest bar portion in which each holding portion is attached to a predetermined position of a rolling mill via a mounting body so as to face each other, and a guide device for a rolled material is mounted on a saddle between the mounting bodies. Is arranged, and the movable rest bar main body is held from both sides by using a holding body, and the movable rest bar main body is fixed to a required position of the rolling mill. After the fixation, the translation device is operated to translate the saddle in parallel, so that the guiding device mounted on the saddle is aligned with the hole shape of the rolling roll. It becomes possible.
In the case where the movable rest bar portion is provided, the movable rest bar portion is mounted on a cradle for forward and backward movement, and the forward and backward moving means and the movable rest bar portion are connected by joint means. The movable rest bar is moved to the rolling mill side by operating the longitudinal moving means of the longitudinal moving unit, and the movable rest bar body of the movable rest bar is inserted between the mounting bodies of the holding unit, and then the movable rest bar body is used by using the holding body. At the required position of the rolling mill.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a detachable rest bar device of the present invention will be described.
The detachable rest bar device LD shown in FIGS. 1 to 4 is arranged on both left and right sides of FIG. 2 with a rolling mill M interposed therebetween, and each of them comprises a holding portion A, a movable rest bar portion B, and a front-rear moving portion C.
First, the structure of the holding unit A will be described with reference to FIGS.
The holding portion A includes a pair of rest bar brackets 1 and a hydraulic cylinder 2. Each of the rest bar brackets 1 is attached to each of the rolling mills M indicated by two-dot chain lines in FIGS. Although only one rolling mill M is shown in FIG. 2, a plurality of rolling mills are actually arranged in the horizontal direction in the figure. Each rest bar bracket 1 is fixed to a predetermined mounting location of the rolling mill M by a plurality of fixing bolts 3. As shown in FIG. 5, in each hydraulic cylinder 2, a cylinder rod 2a penetrates through the rest bar bracket 1, and a wedge-shaped locking portion 2b is provided at the tip of the cylinder rod. A disc spring 2c is arranged in the hydraulic cylinder 2, and the locking portion 2b can be pushed out by pressing the cylinder rod 2a by the spring force and moving it to the left in FIG.
In this example, the locking portion 2b is pushed out by the disc spring 2c, but other means may be applied. For example, an oil pressure may be used instead of the spring force of the disc spring.
[0007]
Next, the structure of the movable rest bar portion B will be described with reference to FIGS.
The movable rest bar portion B includes a pair of movable rest bar bodies 4 and a saddle 5 movable between the movable rest bar bodies.
As shown in FIGS. 3 and 4, a guide shaft 6 and a screw shaft 7 are provided parallel to each other in the axial direction of the rolling roll R between the movable rest bar main bodies 4 which are in opposition to each other (FIG. 6). Both ends of the guide shaft 6 are fixed to the movable rest bar main body 4. Both ends of the screw shaft 7 are supported by the movable rest bar main body 4. As shown in FIGS. 3 and 5, an engaging portion 4 a that can be engaged with the locking portion 2 b of the hydraulic cylinder 2 is provided on an outer portion of each movable rest bar main body 4. As shown in FIG. 1 and FIG. 4, a lower and upper part of each movable rest bar main body 4 is provided with a back and forth moving base 8 which constitutes a part of a back and forth moving part C, which will be described later. And a connecting member 10 for connecting the guide portions, and a joint receiving portion 11 provided at a lower portion of the pedestal for forward and backward movement.
The saddle 5 is disposed between the movable rest bar main body 4 as shown in FIGS. 3 and 4, and has roller guides G1 and G2 (FIG. 2) as guide devices for rolling material mounted on its upper surface. The guide shaft 6 and the screw shaft 7 pass through the saddle 5. As shown in FIGS. 6 and 7, the worm wheel 12 rotatably incorporated in the saddle 5 is connected to the male screw portion 7 a of the screw shaft 7. The worm wheel 12 meshes with a worm 14 provided on a drive shaft 13a of a hydraulic motor 13 which is a rotary drive. When the hydraulic motor 13 is driven, the rotational force is transmitted to the worm wheel 12 via the worm 14, so that the worm wheel can move along the axis on the screw shaft 7 with which the worm wheel meshes, and as a result, the saddle 5 moves in the left-right direction in FIG. 4 using the guide shaft 6 as a guide. As described above, the screw shaft 7, the worm wheel 12, the hydraulic motor 13 and the worm 14 are arranged so that the roller guides G1 and G2 removably mounted on the saddle 5 are aligned with the hole shape of the rolling mill M in the axial direction of the rolling roll R. This constitutes a parallel moving means for performing parallel movement.
As means for restricting the parallel movement of the saddle 5, a saddle clamp 15 is provided in the example shown in FIG. The saddle clamp 15 includes a hydraulic cylinder 15a, a disc spring 15b, and a clamp bolt 15c. The hydraulic cylinder 15a is disposed below the saddle 5, and the clamp bolt 15c passes through the saddle and is connected to the upper portion of the saddle at the tip of the clamp bolt. In order to fix the saddle 5, the gap between the saddle 5 and the guide shaft 6 is reduced by using the clamp bolt 15c of the hydraulic cylinder 15a of the saddle clamp 15 and by using the tension of the disc spring 15b. It is fixed to the guide shaft.
[0008]
The front-rear moving unit C will be described with reference to FIGS.
The front-rear moving unit C is for moving the movable rest bar unit B back and forth in order to attach / detach to / from the holding unit A. The front-rear moving part C includes a receiving table 16 on which the above-mentioned front-rear moving frame 8 can be mounted, a guide groove 17 formed on the receiving table, and capable of fitting with the guide section 9, a hydraulic cylinder 18, A joint part 19 attached to the rod end of the cylinder and connected to the joint receiving part 11 by a pin 20 is provided.
The guide grooves 17 of the cradle 16 are arranged to face each other at an interval (FIG. 4). The guide groove 17 is formed in the support 16 over the entire length in the front-rear direction (the left-right direction in FIG. 3). The distal end of a guide portion 9 that extends from the lower portion of the forward / backward movement mount 8 and is bent into an L shape is movably fitted in the guide groove 17. The hydraulic cylinder 18 is located behind the cradle 16, and can move the gantry 8 for longitudinal movement, which is connected via the joint 19 and the pin 20, back and forth by extending the cylinder rod 18 a.
[0009]
Here, the mutual relationship between the holding portion A, the movable rest bar portion B, and the front and rear moving portion C will be described.
With reference to FIG. 3, the relationship between the holding portion A and the movable rest bar portion B will be described.
By locking the locking portion 2b against the engaging portion 4a of the movable rest bar main body 4 by the pressing force of the disc spring 2c of the hydraulic cylinder 2 held on the rest bar bracket 1 attached to the rolling mill M. The movable rest bar portion B can be fixed to the rolling mill M.
The relationship between the movable rest bar portion B and the front / rear moving portion C will be described with reference to FIGS.
The guide portion 9 provided on the movable rest bar main body 4 is fitted into the guide groove 17 of the receiving base 16. The joint receiving portion 11 of the movable rest bar main body 4 is connected to a joint portion 19 at the rod end of a hydraulic cylinder 18. The movable rest bar main body 4 can be freely moved back and forth by the hydraulic cylinder 18. That is, by applying hydraulic pressure to the hydraulic cylinder 18, the movable rest bar main body 4 is moved back and forth through the joint receiving portion 11 of the movable rest bar main body 4 and the joint portion 19 on the hydraulic cylinder 18 side, so that the holding portion A And the movable rest bar portion B can be freely attached and detached.
[0010]
A method of using the detachable rest bar device LD will be described.
First, the operation of attaching the movable rest bar portion B to the rolling mill M will be described.
As shown in FIG. 8, each of the rest bar brackets 1 of the holding portion A is previously attached to each of the rolling mills M with the fixing bolts 3, and then the rolling mill M and a rolling mill (not shown) adjacent thereto. The cradle 16 and the hydraulic cylinder 18 of the front-rear moving unit C are installed between them.
At the same time, after mounting each of the rest bar brackets 1 on the rolling mill M, the hydraulic cylinders 2 of the both rest bar brackets 1 are operated in a direction of contracting against the pressing force of the disc spring 2c, so that the cylinders opposed to each other. The space between the locking portions 2b on the distal end side of the rod 2a is widened so that the engaging portion 4a of the movable rest bar body 4 can be inserted between the locking portions.
After installing the cradle 16 and the hydraulic cylinder 18, the movable rest bar portion B is lifted using an overhead crane provided in a rolling mill and mounted on the cradle 16. The guide part 9 is inserted into the guide groove 17 at the time of mounting. Then, the joint receiving portion 11 of the movable rest bar portion B and the joint portion 19 of the hydraulic cylinder 18 are connected using the pin 20.
At the stage where the movable rest bar body 4 and the hydraulic cylinder 18 are connected, the hydraulic cylinder 18 is driven to extend the cylinder rod 18a to the front side, and the rolling mill 8 is guided while guiding the back-and-forth moving mount 8 along the guide groove 17. The movable rest bar body 4 is moved to the M side (the arrow side in FIG. 8) and the movable rest bar main body 4 is positioned between the locking parts 2b of the holding part A, and the engaging part 4a of the movable rest bar part B is attached to the rolling mill M. To the locking portion 2b.
When the positioning is completed, the disc spring 2c is pushed in the direction of pushing out the disc spring 2c using the hydraulic pressure of the hydraulic cylinder 2 of each holding part A, and the locking part 2b is pressed against the engaging part 4a by the cylinder rod 2a. Then, the movable rest bar portion B is fixed to the holding portion A such that the movable rest bar main body 4 is sandwiched between the cylinder rods on both sides thereof.
By the fixing operation, the attachment of the holding portion A to the movable rest bar portion B is completed.
Next, the operation of aligning the roller guides G1 and G2 with the caliber of the rolling mill M will be described.
The saddle clamp 15 is previously operated in the direction in which the clamp bolt 15c is pushed out to release the saddle clamp against the pressing force of the disc spring 15b. Further, the roller guides G1 and G2 are set on the saddle 5 of the movable rest bar portion B. In FIG. 2, the roller guide G1 is mounted on the saddle 5 on the right side, and the roller guide G2 is mounted on the saddle 5 on the left side in FIG. 2, and fixed by the fixing clamp 21 (FIG. 6).
By rotating the screw shaft 7 in a required rotation direction via the worm wheel 12 and the worm 14 by the hydraulic motor 13, the saddle 5 moves in the left-right direction in FIG. 4 to move the roller guides G1 and G2 installed on the saddle. Align with caliber of mill M.
After the positioning is completed, the gap between the saddle 5 and the guide shaft 6 is reduced with the clamp bolt 15c of the saddle clamp 15 using the tension of the disc spring 15b to fix the saddle, and the roller guides G1 and G2 are rolled. Finish the work of positioning to the required hole shape.
As described above, in the detachable rest bar device LD of the present invention, the holding portion A (rest bar bracket 1) is fixed to each of the required positions of the plurality of rolling mills M online with the fixing bolts 3, and The movable rest bar portion B is moved in the front-rear direction using the moving portion C, and is mounted on the holding portion A attached to each rolling mill M for use.
When the movable rest bar portion B (movable rest bar main body 4) is to be removed from the rolling mill M after the end of the rolling, the hydraulic cylinder 2 of the holding portion A is operated in a direction against the pressing force of the disc spring 2c to move the movable rest bar portion 2b between the locking portions 2b. Is opened to release the engagement between the movable rest bar body 4 and the engaging portion 4a, the movable rest bar portion B can be moved in the front-rear direction. The movable rest bar portion B can be removed from the rolling mill by operating the hydraulic cylinder 18 of the front and rear moving portion C in the direction opposite to the rolling mill M.
[0011]
In the detachable rest bar device LD having the above configuration, the operation of replacing the movable rest bar main body 4 is easily completed by using the holding portion A and the front-rear moving portion C, and furthermore, the fixed operation of the hydraulic cylinder 2 of the holding portion is performed. Can be fixed with sufficient clamping force. Further, the crane need only be used when the crane is placed on the cradle 16 of the front-rear moving unit C, and the crane need not always be used. As a result, operations such as unclamping, position movement, and clamping, which were conventionally performed by several persons for several tens of minutes, can be remotely operated with a single switch, and the position adjustment operation can be greatly reduced.
[0012]
In the detachable rest bar device LD having the above-described configuration, the movable rest bar portion B is provided with the saddle 5 that can move in parallel in the axial direction of the rolling roll R, so that a device for guiding a rolled material mounted on the saddle (roller guide G1, G2) can be adjusted in position according to the plurality of holes of the rolling roll. Further, since the holding portion A is fixed to at least two or more rolling mills M, and the movable rest bar portion B can be attached to and detached from at least the two or more rolling mills via the holding portion A, The movable rest bar portion can be used for any of a plurality of rolling mills.
[0013]
When the front-rear moving part C is not used or when there is not enough space for mounting the front-rear moving part C between the adjacent rolling mills M, the front-rear moving part C is not used. In these cases, the movable rest bar portion B is lifted by an overhead crane, transported to a rolling mill M to be mounted, and mounted and fixed to the holding portion A.
[0014]
【The invention's effect】
According to the present invention, since the movable rest bar portion is detachably held by the holding portion that can be attached to a plurality of rolling mills, the movable rest bar portion can also be used for a plurality of rolling mills, and thus the efficiency of the rolling line can be improved. And equipment costs can be reduced.
[Brief description of the drawings]
FIG. 1 is an enlarged front view showing a detachable rest bar device according to the present invention.
FIG. 2 is a front view showing the entire mounting state of the detachable rest bar device according to the present invention.
FIG. 3 is a plan view showing a main part of the detachable rest bar device according to the present invention.
FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 2;
FIG. 5 is a partially cutaway enlarged plan view showing a holding portion in the detachable rest bar device according to the present invention.
FIG. 6 is a partially cut-away enlarged front view showing parallel moving means of a movable rest bar portion in the detachable rest bar device according to the present invention.
FIG. 7 is a partially cutaway side view showing the relationship between the worm wheel and the screw shaft of the parallel moving means in the detachable rest bar device according to the present invention.
FIG. 8 is a front view showing an entire state before a movable rest bar portion is attached to a holding portion of the detachable rest bar device according to the present invention.
[Explanation of symbols]
1 Rest bar bracket (mounting body)
2 Hydraulic cylinder (holding body)
2b locking portion 2c disc spring 3 fixing bolt 4 movable rest bar body 5 saddle 6 guide shaft (parallel moving means)
7 Screw shaft (parallel moving means)
7a Male screw part 8 Back and forth movement stand 9 Guide part 10 Connecting member 11 Joint receiving part (joint means)
12. Worm wheel (parallel moving means)
13. Hydraulic motor (parallel moving means, rotary drive)
13a drive shaft 14 worm (parallel moving means)
15 Saddle clamp 15a Hydraulic cylinder 15c Clamp bolt 16 Cradle 17 Guide groove 18 Hydraulic cylinder 19 Joint part (joint means)
A Holding part B Movable rest bar part C Front and rear moving parts G1, G2 Roller guide (rolled material guiding device)
LD Removable Rest Bar Device M Rolling Machine R Rolling Roll

Claims (6)

A pair of holding parts that can be attached to a rolling mill, and a movable rest bar part that is detachably held by both holding parts,
Each of the holding units includes a mounting body for mounting to the rolling mill, and a holding body connected to the mounting body,
The movable rest bar portion includes a movable rest bar main body, a saddle movably provided on the movable rest bar main body, and a saddle for mounting a rolled material guiding device, and moving the saddle in the axial direction of a rolling roll of the rolling mill. And a parallel moving means for enabling
The detachable rest bar device, wherein the parallel moving means can adjust the position of the rolled material guiding device according to a plurality of hole shapes of a rolling roll. Each attachment body in the holding portion is a rest bar bracket that can be attached to the rolling mill facing each other, the holding body is a cylinder provided with a locking portion at the tip end of the cylinder rod,
The movable rest bar main body in the movable rest bar portion is provided with an engaging portion that can be engaged with the locking portion of the holding body,
The parallel moving means includes a guide shaft and a screw shaft arranged in parallel with the axial direction of the rolling roll, a worm wheel, and a worm meshing with the worm wheel.
The guide shaft is supported by the movable rest bar body and penetrates through the saddle, the screw shaft is supported by the movable rest bar body, the worm wheel is attached to the saddle, and the screw shaft 3. The worm wheel according to claim 1, wherein said worm is provided on a drive shaft of a rotary drive provided on said saddle and meshes with said worm wheel. Removable rest bar device. The cylinder in the holding portion is a hydraulic cylinder in which a disc spring for pressing the locking portion of the holding portion against the engaging portion of the movable rest bar portion is provided inside the cylinder, and the movable rest bar portion resists the pressing force of the disc spring. 3. The detachable rest bar device according to claim 2, wherein the rest bar device is releasable from a pressure applied to the rest bar. The removable rest bar device according to any one of claims 1 to 3, wherein the movable rest bar portion is provided with a saddle clamp capable of fixing the saddle to the movable rest bar main body. A forward / backward moving unit is provided for moving the movable rest bar along a direction intersecting with the axial direction of the rolling roll. The forward / backward moving unit includes a forward / backward moving base provided on the movable rest bar, and a forward / backward moving unit. A cradle that can move and mount the gantry, and a traverse means for moving the traverse mount in the front-rear direction with respect to the rolling mill; and The detachable rest bar device according to any one of claims 1 to 4, further comprising a joint means. The back-and-forth moving means is a hydraulic cylinder, and a joint portion is provided at a tip end of a cylinder rod of the hydraulic cylinder, and the joint portion is connected to a joint receiving portion provided on a back-and-forth moving base. 6. The detachable rest bar device according to claim 5, wherein joint means are constituted by the joint receiving portion.

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