JP3598149B2 - Device for guiding bar steel to straightening machine - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a device for guiding a straight bar to a straightening machine, and in particular, a device for guiding a straight bar to a straightening machine, which can surely guide the tip of each of a plurality of strips to a multi-row straightening machine and make it bite. It is about.
[0002]
[Prior art]
As shown in FIG. 3, after the hot rolling, the bar steel 1 such as an angle steel cut to a predetermined length is sequentially sent to a cooling floor 2 and cooled therein. Thermal stress distortion occurs due to uneven cooling in Then, the bar steel 1 is sent from the cooling floor 2 to the straightening machine 4 by the front roller table 3 installed along the transport line connecting the cooling floor 2 and the straightening machine 4, and the straightening machine 4 is free from distortion such as bending. Had been removed.
[0003]
Immediately after being placed on the front roller table 3 from the cooling floor 2, that is, at the position A in the drawing, the strips 1 are separated from each other in the width direction. In the position B in the figure, which is close to each other and close to the entrance side of the straightening machine 4, the separated steel strips 1 are not in a mutually separated state, and as a result, the tip of the bar 1 is securely engaged with the caliber roll of the straightening machine 4. In some cases, the line was stopped due to poor biting.
[0004]
Therefore, as shown in FIG. 4, a guide plate 5 that partitions a conveying passage of each bar 1 on the front roller table 2 is known as a bar guide device for guiding the end of the bar 1 to the straightening machine 4. ing. By installing this guide plate type guiding device on the entrance side of the straightening machine 4, each bar 1 passes through the transport passage partitioned by the guide plate 5, and the tip of each bar 1 is guided to the straightening machine 4. . Hereinafter, this guidance device is referred to as Conventional Technology 1.
[0005]
As another strip steel guiding device, as shown in FIG. 5, a device comprising a vertically movable grooved roller 6 having grooves formed at a pitch equal to the caliber pitch of the caliber roll of the straightening machine 4 is known. If the grooved roller 6 is installed on the entry side of the straightening machine 4 and is lowered on the bar 1, the position of each bar 1 in the width direction is restricted. Thereby, since each bar 1 separates mutually, the front-end | tip of each bar 1 is guided to the straightening machine 4. FIG. Hereinafter, this guidance device is referred to as Conventional Technology 2.
[0006]
Further, as another steel bar guiding device, as shown in FIG. 6, there is known a device in which a grooved roller 7 similar to the prior art 2 is configured to be movable up and down and movable within a limited range. If the grooved roller 7 is installed on the entry side of the straightening machine 4, lowered on the bar 1, and then moved in the direction of the straightening machine 4, the position of each bar 1 in the width direction is restricted. Thereby, since each bar 1 separates mutually, the front-end | tip of each bar 1 is guided to the straightening machine 4. FIG. Hereinafter, this guidance device is referred to as Conventional Technology 3. In the prior art 3, the grooved roller 7 can move within a limited range also in the direction of the straightening machine 4, and the operation of the bar 1 is squeezed by this operation. Is excellent.
[0007]
[Problems to be solved by the invention]
However, prior art 1 has the following problems. That is, when the length of the front roller table 2 for transporting the strip 1 from the cooling floor 2 to the straightening machine 4 becomes longer, the strips 1 are brought closer to each other before being transported to the guide plate 5, and two strips are formed in one partition. Of steel bar 1 may enter. Further, in the prior arts 2 and 3, when the grooved rollers 6, 7 are lowered onto the strip 1, two strips 1 may enter into one groove. In the prior art 3, the grooved roller 7 can move in the direction of the straightening machine 4, but the moving range of the grooved roller 7 is limited, so that the contact of the strip 1 on the entry side of the grooved roller 7 cannot be prevented. . Further, in any of the prior arts, it is necessary to replace the guiding device for each type of the bar steel 1.
[0008]
Therefore, an object of the present invention is to provide a straightening machine for a multi-row straightening machine in which even if the length of the front roller table for transporting the strips from the cooling floor to the straightening machine becomes longer, the tips of the plurality of strips are reliably increased. It is an object of the present invention to provide a device for guiding a steel bar to a straightening machine, which can guide and bite the steel bar, and can easily cope with different types of steel bar.
[0009]
[Means for Solving the Problems]
A feature of the present invention described in claim 1 is a device for guiding a plurality of steel bars on a transport line to a multi-beam straightener at the same time along a longitudinal direction thereof, in a device for guiding a steel bar to a straightener, The truck comprises a trolley that can travel along the transport line, and a guide mounted on the trolley and capable of moving up and down with respect to the steel bar. The guides are arranged in parallel with each other and on the same circumference. Consisting of a plurality of guide rolls, each of the plurality of guide rolls has calipers having different shapes and pitches different from each other, and one of the plurality of guide rolls has a shape corresponding to the steel bar. And a caliber having the same pitch as the pitch of the roll caliber of the straightening machine, and each of the plurality of guide rolls can be selected according to various types of steel bars to be straightened.
[0010]
A feature of the present invention described in claim 2 is that the bogie travels with a speed difference with respect to a transport speed of the strip on the transport line.
[0012]
[Action]
A truck moving along the transport line that transports the steel bar from the cooling floor to the straightening machine, to correct the widthwise interval of multiple steel bars on the transport line to match the pitch of the roll caliber of the straightener By installing the guide means, even if the length of the front roller table for transporting the bar from the cooling floor to the straightening machine becomes longer, the tip of each of the plurality of bar steels can be reliably fixed to the multi-row straightening machine. Can be guided and bitten.
[0013]
Moreover, the guide means includes a plurality of guide rolls having a caliber corresponding to the shape of the bar and the pitch of the caliber is equal to the pitch of the roll caliber of the straightening machine. , It is possible to easily cope with different types of bar steel.
[0014]
【Example】
Next, an embodiment of a device for guiding a steel bar to a straightening machine according to the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a partial side view showing an embodiment of an apparatus for guiding a steel bar to a straightening machine according to the present invention, and FIG. 2 is a partial perspective view showing an embodiment of an apparatus for guiding a steel bar to a straightening machine according to the present invention. FIG.
[0016]
In FIG. 1, reference numeral 8 denotes a front roller table installed on a transport line connecting a cooling floor (not shown) and the straightening machine 4. Reference numeral 9 denotes a rail laid along the front roller table 8. Reference numeral 10 denotes a carriage that can travel along the rail 9. Reference numeral 11 denotes guide means mounted on the carriage 10, which has a function of correcting the widthwise interval of each bar 1 on the front roller table 8 so as to match the pitch of the roll caliber of the straightening machine 4. I have.
[0017]
The guide means 11 is composed of a plurality of guide rolls 12 and a cylinder 13 as an elevating means for elevating the guide rolls 12 with respect to the steel bar 1. Each guide roll 12 has a caliber having a different shape and a different pitch from each other, and one of them has a caliber having a shape corresponding to the bar steel 1 and a pitch equal to the pitch of the roll caliber of the straightening machine 4. Have. Each guide roll 12 is a turret roller type or a revolver type, that is, arranged in parallel with each other and on the same circumference, rotates around a central axis 14, and selects a desired guide roll 12 according to the type of the bar steel 1. It is configured to be able to. The selection of the guide roll 12 may be performed manually or mechanically. After the selection, the guide roll 12 is fixed at a fixed position.
[0018]
According to the guiding device of the present invention configured as described above, the steel bar is reliably guided to the straightening machine as follows. That is, immediately after the bar 1 is transferred from the cooling floor onto the front roller table 8 and when the bar 1 is separated from each other, the cylinder 13 is operated, and the cylinder 13 is operated in advance according to the type of the bar 1. The selected guide roll 12 corresponding to the bar 1 and the straightening machine 4 is lowered onto the bar 1. Thereby, the position of each bar 1 in the tip width direction is restricted. In this case, the guide roll 12 does not necessarily need to restrict the position in the width direction of the end of the steel bar 1.
[0019]
Next, the carriage 10 is caused to travel along the rail 9 toward the straightening machine 4. At this time, the bogie 10 may be run in synchronization with the moving speed of the bar 1. However, if the running speed of the bogie 10 is set to be slightly lower than the moving speed of the bar 1, Since the ironing effect of the steel bar 1 by 12 is generated, the steel bar 1 is further effectively separated. In addition, since the guide rolls 12 move toward the straightener 4 in the separated state, the steel bars 1 do not come close to each other during the transportation. When the end of the bar 1 approaches the straightening machine 4 in this manner, the carriage 10 is decelerated and stopped, and the tip of the bar 1 is bitten by the caliber roll of the straightening machine 4.
[0020]
【The invention's effect】
As described above, according to the present invention, the following useful effects are provided.
(1) On a bogie that moves along the transport line that transports the steel bar from the cooling floor to the straightening machine, adjust the widthwise interval of the multiple steel bars on the transport line to match the pitch of the roll caliber of the straightener. By installing the guide means for correcting, even if the length of the front roller table for transporting the bar from the cooling floor to the straightening machine is increased, it is ensured that the tips of each of the plurality of bars are multi-row. It can be guided to the straightening machine and bitten.
[0021]
{Circle around (2)} The guide means includes a plurality of guide rolls having a caliber corresponding to the shape of the bar and having the same caliber pitch as the roll caliber pitch of the straightening machine. By making it selectable according to the bar, it is possible to easily cope with different types of bar.
[0022]
{Circle around (3)} By making the difference between the traveling speed of the bogie and the moving speed of the bar, the bar can be stiffened, so that the bar can be reliably guided to the straightening machine.
[Brief description of the drawings]
FIG. 1 is a partial side view showing an embodiment of a device for guiding a steel bar to a straightening machine according to the present invention.
FIG. 2 is a partial perspective view showing one embodiment of a device for guiding a steel bar to a straightening machine according to the present invention.
FIG. 3 is a plan view showing a steel bar conveyed from a cooling floor to a straightening machine.
FIG. 4 is a schematic perspective view showing a conventional technique 1.
FIG. 5 is a schematic perspective view showing a conventional technique 2.
FIG. 6 is a schematic perspective view showing a conventional technique 3.
[Explanation of symbols]
1: strip steel 2: cooling floor 3: front roller table 4: straightening machine 5: guide plate 6: grooved roller 7: another grooved roller 8: front roller table 9: rail 10: trolley 11: guide means 12: guide Roll 13: Cylinder 14: Central axis

Claims (2)

In order to guide a plurality of steel bars on the transfer line to the multi-beam straightener at the same time along the longitudinal direction, in a steel bar guide device to the straightener,
The truck comprises a trolley that can travel along the transport line, and a guide mounted on the trolley and capable of moving up and down with respect to the steel bar. The guides are arranged in parallel with each other and on the same circumference. Consisting of a plurality of guide rolls, each of the plurality of guide rolls has calipers having different shapes and pitches different from each other, and one of the plurality of guide rolls has a shape corresponding to the steel bar. And a caliber having the same pitch as the roll caliber of the straightening machine, wherein each of the plurality of guide rolls can be selected according to various types of bar steel to be straightened. Device to guide the bar to the machine. 2. The device for guiding a straight steel bar to a straightening machine according to claim 1 , wherein the bogie travels with a speed difference with respect to a transport speed of the steel bar on the transport line . 3.

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