JP4026927B2 - Sectional steel cutting machine and method for driving the tool post - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, among the refining equipment for hot rolling lines such as H-shaped steel, I-shaped steel, angle, channel, steel sheet pile, etc. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a section cutting machine for section steel that cuts into a scale and a method for driving the tool post.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a section cutting machine for the shape steel provided for the above-described purpose, there is a section cutting machine for cutting a section described in JP-A-6-155146.
This running-cutting machine has a slide-type cutting blade consisting of a fixed blade and a movable blade having a hole shape adapted to the cross-sectional shape of the product, and a product guide guides at the entrance of the cutting machine that cuts while running in synchronization with the product. Is provided. This guide has a plurality of slide type guide rollers inside, and the cutting machine is elastically supported by an elastic body such as a spring. The sliding guide roller is mounted so that the stroke can be adjusted so that the product can pass through the hole shape of the cutting blade without contact.
With the above-described configuration, it is expected that the cutting surface of the shaped steel does not stick to the cutting blade, the contact between the cutting blade and the product is eliminated, and the cutting blade is not worn or chipped.
[0003]
[Problems to be solved by the invention]
However, the above-described cross-cutting machine for shape steel still has the following problems to be solved.
In other words, if the tip of the shape steel or the entire bend is small, the shape steel can be guided by the above-mentioned spring-biased guide roller. The shape straightened by the roller straightening machine installed in the machine is not completely bent, and sometimes it is bent greatly in the vertical and horizontal directions. A section having such a large bend cannot be completely inserted into the hole type of a sliding cutting blade.
Further, when the shape steel size is increased, the cutting reaction force becomes 200 to 500 tons, and it is not possible to cope with a running cutting machine in which the cutting machine main body travels like the running cutting machine of this shape steel.
[0004]
Therefore, in recent years, as a running cutting machine for dealing with such large size steel, the press body is fixed on the ground, and the cutting metal that cuts the steel by following the movement of the steel that is the material to be cut. A running cutting machine is proposed in which only a tool post having a mold is moved in a line direction by a traveling drive device.
However, such a running cutter has a physical dimension exceeding 1000 mm from the guide roll to the center of the turret. Therefore, if the bending of the shape steel is large, the tip of the shape steel collides with the cutting die. An accident such as a stop will occur.
[0005]
The present invention has been made in view of such circumstances, and even a large and small size steel can reliably guide its tip into a cutting die and smoothly cut between runnings. An object of the present invention is to provide a cross-cutting machine for shaped steel that can be used and a method for driving the tool post.
[0006]
[Means for Solving the Problems]
The driving method of the tool post of the cross-cutting machine for the structural steel according to claim 1, which meets the above object, has a roller guide disposed on the upstream side of the cross-cutting machine having a tool post movable along the running rail. In the driving method of the tool post of the cross-cutting machine for section steel,
A rail extension is formed by extending the upstream end of the traveling rail toward the roller guide, and the tool post is moved upstream of the running cutter along the rail extension to the cutter. An upper part of the roller guide that is centered in four directions of upper, lower, left, and right by bringing a cutting die comprising a fixed blade and a moving blade having the same hole mold as the shape steel mounted on a table close to the roller guide. The lower roller and the left and right rollers are all set in the retracted position, and after passing the leading end of the traveling shape steel through the roller guide, the respective roller advance / retreat cylinders are operated, and the upper, lower and left, pressing the right roller, vertical and while bending and straightening the right and left direction centering the tip of the transformant steel as in the close position of the cutting die in the centering state, the tip of the transformant steel After passing through the cutting die, the tool post is moved to the downstream side in synchronization with the tip of the section steel, and when moving to the cutting section, the moving blade is moved up and down relative to the fixed blade. The section steel was cut while running.
[0007]
A cross-cutting machine for section steel according to claim 2, wherein a cutting tool having a fixed blade having the same hole mold as the section steel and a moving blade is built in, and the tool rest is movable along the traveling rail, and the cutting tool A shape steel running cutting machine in which a roller guide is arranged upstream of a shape steel running cutting machine having a pressing press for driving the die to cut the shape steel. The upper, lower, left, and right rollers are centered from the four directions of upper, lower, left, and right, and the upper, lower, right, and right roller advance / retreat cylinders are provided, and the upstream side of the traveling rail faces the roller guide. A rail extension is formed by extension, and the tool post is moved along the rail extension to a position close to the roller guide, and the tip of the shape steel is in the centering state and in the vicinity of the cutting die. It is configured.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. This embodiment will be described on the assumption that the section steel to be cut is H-section steel 28 (see FIG. 15 and the like).
[0009]
First, with reference to FIG. 1, the positional relationship in the refining equipment of the hot section steel rolling line of the section cutting machine 14 for the section steel according to the embodiment of the present invention is shown in a block diagram.
As shown in the drawing, the hot section steel rolling line refining equipment includes a cooling bed 10 that cools a high-temperature H-section steel 28 that has been rolled by a hot rolling mill from the upstream side to the downstream side to room temperature, In order to insert the straightening machine inlet guide 11 for conveying the H-shaped steel 28 after cooling, the roller straightening machine 12 for removing the bend of the H-shaped steel 28, and the H-shaped steel 28 into the hole of the cutting die described later. The roller guide 13 for centering the H-shaped steel 28 and the running-cutting machine 14 for cutting the H-shaped steel 28 while running are configured. Some hot section steel rolling lines do not include the straightening machine inlet guide 11 or the roller straightening machine 12.
[0010]
Next, with reference to FIG.2 and FIG.3, the structure of the roller straightening machine 12, the roller guide 13, and the running cutting machine 14 is demonstrated.
First, the structure of the roller straightening machine 12 will be described. The upper and lower four rollers and the five upper and lower straightening rollers 15 and 16 are alternately arranged, one of the upper and lower is driven, and the other is idle. Yes.
[0011]
The travel cutting machine 14 will be described. An electric crank type press press 18 is disposed above the travel cutting machine base 17 fixedly installed on the floor surface. A traveling rail 19 is attached to the lower surface of the press press 18.
[0012]
A tool post 21 is arranged between the running cutter base 17 and the clamp-type pressing press 18 so as to be movable in the front-rear direction along the running rail 19 by the tool post running mechanism 22. The tool rest 21 incorporates a cutting die (sliding cutting blade) including a fixed blade having a hole shape matched to the cross-sectional shape of the H-shaped steel 28 and a movable blade. In the present embodiment, the tool post traveling mechanism 22 has a rack rod 22a, one end of which is connected to the tool post 21 and a rack formed on the lower surface, and a pinion 22b that meshes with the above rack on the output shaft. It consists of a rotating motor.
In FIG. 3, a cutting crank drive motor 24 and a cutting crank speed reduction mechanism 25 for driving the pressing press 18 are disposed on the back of the pressing press 18.
[0013]
The roller guide 13 disposed between the roller straightening machine 12 and the running cutting machine 14 is positioned on the roller guide base 26 and the roller guide frame 27 at positions above and below a pass line 29 of an H-section steel 28 which is an example of a shape steel. The upper and lower rollers 30 and 31 are arranged, and left and right rollers 32 and 33 arranged at the left and right positions of the pass line 29 are attached.
In the present embodiment, the left and right rollers 32 and 33 are arranged on the upstream side of the upper and lower rollers 30 and 31.
[0014]
The roller guide 13 includes upper, lower rollers 30, 31 and left, right rollers 32, 33 that move forward and backward toward the pass line 29, and upper, lower, right roller advance / retreat cylinders 34, 35, 36, 37. The upper, lower, left, and right roller advance / retreat cylinders 34, 35, 36, and 37 can be positioned in accordance with the shape steel size using any of an electric cylinder, a hydraulic cylinder, and a pneumatic cylinder.
As shown in FIG. 2, the upper roller advance / retreat cylinder 34 is configured so that the upper roller 30 moves forward / backward to the pass line 29 via an upper roller swing arm 38. A receiving roll 39 is attached on the upstream side of the roller guide base 26.
[0015]
In the refining equipment for the hot section steel rolling line having the above-described configuration, as shown in FIGS. 2 and 4 to 13, the upstream end of the traveling rail 19 extends toward the roller guide 13, A rail extension 19a is formed. With this configuration, as will be described later, the tool post 21 can be moved to a position close to the roller guide 13 by driving the tool post traveling mechanism 22, and a cutting die attached to the tool post 21 can be moved. It can be brought close to the tip of the H-section steel 28 that has passed the roller guide 13.
[0016]
Next, with respect to the driving method of the tool post of the shape steel running cutter using the running cutter 14 having the above-described configuration, FIG. 1 to FIG. Explanation will be made with reference to FIG.
[0017]
As shown in FIG. 1, the H-section steel 28 rolled by a hot rolling mill (not shown) is transferred to the roller straightening machine 12 through the cooling bed 10 and the straightening machine inlet guide 11. In the roller straightening machine 12 shown in FIG. 2, for example, the upper and lower straightening rollers 15 and 16 start to receive a bending moment, followed by the subsequent upper and lower straightening rollers 15 and 16 in the reverse direction, and the yield bending moment. The pressure is reduced until it is reduced. During this time, the vertical bending of the H-section steel 28 is removed. However, the bend at the end of the H-shaped steel 28 is upper, and the lower straightening rollers 15 and 16 are alternately arranged and thus are difficult to be corrected. On the other hand, the bending in the lateral direction is corrected to some extent by strengthening the thrust mechanism provided on the upper and lower correction rollers 15 and 16.
[0018]
The H-section steel 28 whose curvature has been corrected in this way is then transferred to the running cutter 14 via the roller guide 13 and is cut between runs.
That is, in FIG. 4 and FIG. 14, the roller guide 13 and the running cutter 14 are in a standby state, and the tool post 21 is positioned at the forefront of the rail extension 19 a of the running rail 19 extended to the running cutter 14. The upper and lower rollers 30 and 31 and the left and right rollers 32 and 33 are all in the retracted position.
[0019]
5 and 14, the tool post traveling mechanism 22 is driven to advance the tool post 21 along the rail extension 19 a to the upstream side of the running cutter 14, and the position closest to the roller guide 13 (most position). Move to (approach position). As a result, the cutting die having the fixed blade and the movable blade in the tool post 21 is also moved to the position closest to the roller guide 13 (the closest position).
[0020]
As shown in FIGS. 6 and 15, the H-section steel 28 is then passed between the left and right rollers 32 and 33, and then the left and right roller advance / retreat cylinders 36 and 37 are operated to move the left and right rollers 32. 33, the both side surfaces of the H-section steel 28 are pressed, and the centering in the left-right direction is performed with respect to the cutting die of the tool post 21 while correcting the left and right bends of the H-section steel 28. In this state, the lower surface of the H-shaped steel 28 is supported by the receiving roller 39.
[0021]
After centering in the left and right directions, as shown in FIGS. 7, 8, 16, and 17, the H-section steel 28 is passed between the upper and lower rollers 30, 31, By operating the roller advance / retreat cylinder 34 and the lower roller advance / retreat cylinder 35, the upper and lower rollers 30, 31 correct the upward and downward bending of the H-section steel 28.
As described above, if the left and right bends of the H-section steel 28 are first corrected, and then the upper and lower bends are corrected, the H-section steel 28 can be used with respect to the cutting mold of the tool post 21. Thus, centering is reliably performed from the four directions of left, right, upper and lower.
In this state, the tip of the H-section steel 28 is located closest to the cutting die.
[0022]
As shown in FIGS. 9 and 17, the H-section steel 28 is passed through the cutting die of the tool post 21. As described above, since the tip of the H-shaped steel 28 is located closest to the cutting die, the H-shaped steel 28 can be reliably passed through the cutting die without colliding with the cutting die.
The H-section steel 28 is caused to travel further downstream, and the tool rest traveling mechanism 22 is driven to move the tool rest 21 to the start end of the cutting section S following the travel of the H-section steel 28. At this time, the moving speed of the tool post 21 is made slower than the traveling speed of the H-shaped steel 28 so that the H-section steel 28 does not come out of the cutting die of the tool post 21. Its control is performed by the measuring roll to measure the length in contact with the H-beams not shown.
[0023]
As shown in FIGS. 10 and 17, when the cutting length is measured and becomes the cutting length, the traveling speed of the tool post 21 is synchronized with the traveling speed of the H-section steel 28, that is, the measuring roll H When it reaches the cutting position P when it coincides with the measured length of the section steel, the pressing press 18 is driven, and the moving blade in the cutting die is moved up and down with respect to the fixed blade so that the H-section steel 28 is fixed. Disconnect with. Thereafter, as shown in FIG. 11, the tool post 21 is decelerated and stopped at the end point of the cutting section S.
[0024]
12 and 17, the tool post traveling mechanism 22 is driven again to move / stop the tool post 21 to the starting end of the cutting section S. Thereafter, as shown in FIG. Is driven again, the tool post 21 is moved to the downstream side following the H-section steel 28, and when synchronized with the H-section steel 28, that is, when the cutting position P is reached, the pressing press 18 is driven. Then, the H-section steel 28 is cut with a cutting die at a fixed scale. FIG. 13 shows a state where the H-section steel 28 is cut at the cutting position P and then stopped at the end point of the cutting section S.
Thereafter, by repeating the same process, the necessary number of H-section steels 28 are cut at a standard length.
[0025]
Thus, in the present embodiment, the tip of the H-shaped steel 28 is centered by passing through the roller guide 13, the tool rest 21 is moved toward the roller guide 13, and the cutting die is moved to the tip of the H-shaped steel 28. , The tip of the H-shaped steel 28 is passed through the cutting die, the tool post 21 is moved downstream in synchronization with the tip of the H-shaped steel 28, and the cutting die is moved to the cutting section S when it is moved to the cutting section S. It is driven to cut the H-section steel while running.
[0026]
Accordingly, the tip of the H-shaped steel 28 that is a material to be cut can be reliably inserted into the cutting die, and it is possible to prevent the occurrence of a bump accident and scratches caused by collision with these, and a stable cutting operation can be performed. It can be carried out.
[0027]
In this embodiment, the cutting tool of the tool post 21 can be brought close to the H-section steel 28 centered by the roller guide 13 simply by extending the traveling rail 19 toward the roller guide 13. Therefore, the equipment cost can be reduced as much as possible, and it is economical.
[0028]
As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. Other embodiments and modifications conceivable within the scope of the above are also included.
[0029]
【The invention's effect】
In the driving method of the tool post of the cross-cutting machine for the shaped steel according to claim 1 and the running cutting machine according to claim 2, the tool post is moved upstream of the cross-cutting machine along the rail extension. A cutting die consisting of a fixed blade and a moving blade having the same hole mold as the section steel mounted on the tool post is brought close to the roller guide, and above the roller guide that is centered in the four directions of up, down, left, and right, The lower roller and the left and right rollers are all set in the retracted position, and after passing the tip of the running shape steel through the roller guide, it is pressed by the upper, lower, left and right rollers on the roller guide in the vertical and horizontal directions. Centering while correcting the bending, the tip of the shape steel can be passed through the cutting die, so that the tip of the shape steel can be reliably inserted into the cutting die, and the bump caused by colliding with these Prevents accidents and scratches Come, it is possible to perform a stable cutting operation.
[0030]
In the running steel cutting machine according to claim 2, the cutting tool of the tool post can be brought close to the shaped steel centered on the roller guide only by extending the running rail toward the roller guide. Therefore, the equipment cost can be reduced as much as possible, which is economical.
[Brief description of the drawings]
FIG. 1 is a block diagram of a refining facility for a hot section rolling line equipped with a section cutting machine for section steel according to the present invention.
FIG. 2 is a front view of a running steel cutting machine and the like according to the present invention.
FIG. 3 is a side view of the same.
FIG. 4 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 5 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 6 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 7 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 8 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 9 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 10 is a process explanatory diagram of a method for driving the tool post of the cross-cutting machine for shaped steel according to the present invention.
FIG. 11 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 12 is a process explanatory diagram of a method for driving the tool post of the cross-cutting machine for shaped steel according to the present invention.
FIG. 13 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 14 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 15 is a process explanatory diagram of a method for driving a tool post of a cross-cutting machine for shaped steel according to the present invention.
FIG. 16 is a process explanatory diagram of a method for driving a tool post of the cross-cutting machine for shaped steel according to the present invention.
FIG. 17 is a process explanatory diagram of a method for driving the tool post of the cross-cutting machine for shaped steel according to the present invention.
[Explanation of symbols]
P Cutting position S Cutting section 10 Cooling floor 11 Straightening machine inlet guide 12 Roller straightening machine 13 Roller guide 14 Running cut machine 15 Upper straightening roller 16 Lower straightening roller 17 Running cut machine base 18 Press press 19 Running rail 19a Rail extension 21 Tool post 22 Tool post traveling mechanism 22a Rack rod 22b Pinion 24 Cutting crank drive motor 25 Cutting crank speed reduction mechanism 26 Roller guide base 27 Roller guide frame 28 H-section steel (material to be cut)
29 Pass line 30 Upper roller 31 Lower roller 32 Left roller 33 Right roller 34 Upper roller advance / retreat cylinder 35 Lower roller advance / retreat cylinder 36 Left roller advance / retreat cylinder 37 Right roller advance / retreat cylinder 38 Upper roller swing arm 39 Receiving roll

Claims (2)

In the driving method of the tool post of the cross-cutting machine of the shape steel in which the roller guide is arranged on the upstream side of the cross-cutting machine having the tool post movable along the running rail,
A rail extension is formed by extending the upstream end of the traveling rail toward the roller guide, and the tool post is moved upstream of the running cutter along the rail extension to the cutter. An upper part of the roller guide that is centered in four directions of upper, lower, left, and right by bringing a cutting die comprising a fixed blade and a moving blade having the same hole mold as the shape steel mounted on a table close to the roller guide. The lower roller and the left and right rollers are all set in the retracted position, and after passing the leading end of the traveling shape steel through the roller guide, the respective roller advance / retreat cylinders are operated, and the upper, lower and left, pressing the right roller, vertical and while bending and straightening the right and left direction centering the tip of the transformant steel as in the close position of the cutting die in the centering state, the tip of the transformant steel After passing through the cutting die, the tool post is moved to the downstream side in synchronization with the tip of the section steel, and when moving to the cutting section, the moving blade is moved up and down relative to the fixed blade. A method for driving the tool post of the cross-cutting machine for section steel, wherein the section steel is cut while running. A cutting tool composed of a fixed blade and a moving blade having the same hole mold as that of the shape steel, and a turret that is movable along the traveling rail, and a press press that drives the cutting mold to cut the shape steel. In the shape steel running cutting machine in which a roller guide is arranged on the upstream side of the shape steel running cutting machine, the roller guide centers the shape steel in four directions of up, down, left, and right. In addition, the upper, lower, left and right roller advance / retreat cylinders are provided to correct the bending of the shape steel, and the rail extension is formed by extending the upstream side of the running rail toward the roller guide, and the tool post is formed. It is configured to move along the rail extension portion to the proximity position of the roller guide, and the tip of the shape steel is configured to be in the proximity position of the cutting die in the centering state. Machine.

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