KR20100045382A - Cutting device - Google Patents

Abstract

assignment

It is providing the cutting device which improved the board | substrate property of a metal plate, and suppressed the fall of productivity, ensuring the space for removal of the cut crop.

Resolution

The upper drum 13 and the lower drum 14, which are disposed above and below the plate paths of the metal plates 6 and 7, respectively, are equipped with cutting blades 11a, 11b, 12a, and 12b, and the upper drum ( 13 and a cutting device 10 which rotates and drives the lower drum 14 to cut the metal plates 6 and 7, and are disposed at the entry and exit sides of the plate paths of the metal plates 6 and 7, and the metal plates 6 and 7. A guide mechanism (42, 52) for guiding the metal plates (6, 7) between the upper drum (13) and the lower drum (14), and a guide mechanism (40, 50). ) Is provided with a guide mechanism for guiding the metal plates 6, 7 between the upper drum 13 and the lower drum 14, and a moving mechanism 60, 70 for moving the retracted position away from the guide position. .

Description

Cutting device {CUTTING DEVICE}

The present invention relates to a cutting device.

By a cutting device (hereinafter referred to as CS before finishing), the front end and the rear end of the metal plate formed by roughly rolling a metal material (slab, etc.) by a rough rolling mill in front of the finishing rolling mill group consisting of a plurality of finishing rolling mills. Hot rolling equipment which cuts and rolls (finish rolling) the process of rolling to a desired plate | board thickness with several finishing rolling mills for every slab is known.

Moreover, in the above-mentioned hot rolling facility, by providing a joining machine between the rough rolling mill and the CS before finishing, the plurality of metal plates are joined together by the joining machine to hot finish the continuous finish rolling by joining the trailing ends of the preceding metal plate and the trailing metal plate. Rolling equipment is also known. In such a hot rolling facility, a cutting device (hereinafter referred to as CS before joining) is arranged at the inlet side (between the rough rolling mill and the joining machine) of the joining machine, and the rear end of the metal plate of the preceding material and the tip of the metal plate of the subsequent material and the so-called joining surface are cropped. Is cut out.

Moreover, also in the above-mentioned hot rolling facility which has a joining machine, when the batch process of finishing rolling for every slab is performed, only the CS before finishing is used, without using the CS before joining. have.

The above-mentioned CS before joining is equipped with the space for entering and exiting the space for dropping the cut crop below. In such a pre-bonding CS, various techniques have been developed in order to improve the sheet-passability of the metal plate at the time of batch processing. For example, Patent Document 1 describes a cropping shear for joining having an exit apron disposed at the crop shear body main exit side, and Patent Document 2 describes a movement means for moving the crop shear off-line and the movement of the crop shear. Continuous hot rolling equipment heat of the steel piece provided with the steel plate conveying table roller which can be moved online online is described, and patent document 3 describes the crop shear which arrange | positioned the roller table unit in the entry side and exit side of a shear frame. have.

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-276910

Patent Document 2: Japanese Patent No. 3319892

Patent Document 3: Japanese Patent Publication No. 2006-509638

However, in the cropping shear for joining described in Patent Document 1 described above, although the steel sheet can be supported by the outgoing apron from below, the sheet-passing property of the steel sheet can be improved, but the table roller and the outgoing member disposed on the entrance side of the cropping shear are improved. The distance between the aprons was long, and the tip of the slab was flipped up or down, or the slab itself was bent, and the flanks could be damaged by contact between the tip or the rear end of the slab and the lower drum.

Moreover, in the continuous hot rolling facility heat of the steel piece described in the patent document 2 mentioned above, although the board | substrate property of a steel piece can be improved by the steel plate conveying table roller, the crop shear and the steel plate conveying table roller are moved by a moving means. In order to switch between on-line and off-line, this switch takes time and reduces productivity.

In the crop shear of the patent document 3 mentioned above, although the board | substrate of a strip-shaped material improves with a roller table unit, since the roller table unit is arrange | positioned in the board | substrate path | route of a strip-shaped material, when the crop of strip | belt-shaped material is cut | disconnected, There was a possibility that the roller table unit prevented the cut crop from being removed from the plate path.

Then, this invention is proposed in view of the above-mentioned problem, Comprising: It aims at providing the cutting device which improved the board | substrate property of a metal plate, ensuring the space for removal of a cut crop, and suppressing the fall of productivity.

Cutting device according to the first invention to solve the above problems,

A cutting device which is disposed above and below a plate path of a metal plate, and includes a top drum and a bottom drum on which a cutting blade is mounted, and cuts the metal plate by rotationally driving the top drum and the bottom drum.

A guide mechanism disposed at the inlet side or the outlet side of the plate path of the metal plate, or both of them, and having a guide roller through which the metal plate is plated to guide the metal plate between the upper drum and the lower drum;

And a moving means for moving the guide mechanism between a guide position for guiding the metal plate between the upper drum and the lower drum, and a retracted position separated from the guide position.

The cutting device which concerns on 2nd invention which solves the subject mentioned above is a cutting device which concerns on 1st invention,

And a shielding member disposed between the guide roller and the lower drum when the moving means positions the guide mechanism at the guide position.

The cutting device which concerns on 3rd invention which solves the subject mentioned above is a cutting device which concerns on 2nd invention,

Protrusions are formed on the outer circumference of the lower drum,

And the lower drum control means for controlling the lower drum when the moving means positions the guide mechanism at the guide position to dispose the protrusion close to the shield member.

According to the cutting device which concerns on 1st invention, when a movement means positions a guide mechanism in a guide position, it is arrange | positioned at the entrance side and the exit side of the metal plate in a cutting device, and a guide roller is arrange | positioned between the table rollers through which a metal plate is mailed. do. Therefore, this guide roller can support a metal plate, and can make the distance between the said table roller and the said guide roller shorter than the distance between the table roller arrange | positioned at the entrance and exit side of the conventional cutting device, It is possible to suppress the insertion of the cut crops into the removal spaces formed at the inlet and outlet sides of the cutting device by being flipped and flipped down and the bending of the metal plate itself, thereby improving the mail passing capability of the metal plate in the cutting device. . In addition, the moving means positions the guide mechanism at the retracted position, thereby securing a space for removing the cropped crop. Moreover, the position adjustment of the said guide mechanism by the said moving means is also easy, and the fall of productivity can be suppressed.

According to the cutting device which concerns on 2nd invention, in addition to exhibiting the same effect as the cutting device which concerns on 1st invention, when a moving means positions a guide mechanism in a guide position, it is arrange | positioned between a guide roller and a lower drum. By providing the shielding member, the metal plate is flipped downward, thereby preventing the metal plate from being sandwiched between the guide roller and the lower drum, thereby further improving the mail-flowability of the metal plate.

According to the cutting device according to the third invention, in addition to exerting the same effect as the cutting device according to the second invention, protrusions are formed on the outer periphery of the lower drum, and the moving means positions the guide mechanism at the guide position. At this time, by providing a lower drum control means for controlling the lower drum and disposing the protrusions close to the shielding member, the metal plate is prevented from being inserted between the lower drum and the guide mechanism, thereby further improving the sheet-flowing properties of the metal plate.

EMBODIMENT OF THE INVENTION Below, the best form for implementing the cutting device which concerns on this invention is demonstrated concretely based on an Example.

Example 1

A cutting device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is a schematic view of a hot rolling mill equipped with a cutting device according to a first embodiment of the present invention. It is a side view of a cutting device, and FIG. 3 is a top view of the guide mechanism with which a cutting device is equipped. In FIG. 2, the case where the guide mechanism with which a cutting device is equipped is positioned in the guide position is shown by the solid line, and the case where the guide mechanism is positioned in the retracted position is shown by the dashed-dotted line.

As shown in FIG. 1, the hot rolling equipment provided with the cutting device which concerns on the 1st Example of this invention is a rough rolling machine (henceforth a dense | mold: 1), a coil box 2, and a joining machine from an upstream side. 3) and a finish mill (hereinafter referred to as finish mill: 4) and a down coiler 5 constituted by a rolling mill of multiple stages.

The metal plates 6 and 7 in which the slab is rolled by the dense 1 are wound around the coiler of the coil box 2. As for the trailing metal plate 6 unwound from the coiler of the coil box 2, after the front end of the trailing metal plate 6 is cut | disconnected by the cutting device 10 before joining, it is carried out by the cutting device 10 before joining as needed. The end is joined to the rear end of the preceding metal plate 7, which has been cut, by the joining machine 3.

The metal plate (continuous strip steel) joined by the bonding machine 3 and brought into a continuous state and the metal plate not bonded by the bonding machine 3 are sent to the finishing mill 4.

The metal plate 7 sent to the finishing mill 4 is successively hot rolled by the multi-stage rolling machine, and rolled to a desired plate thickness, and the metal plate 7 rolled to the desired plate thickness is wound up by the down coiler 5. The cutting means 8 is arrange | positioned at the entrance side (down side of the finishing mill 4) of the down coiler 5, The predetermined part is cut | disconnected by this cutting means 8, and it becomes a product coil.

In the code | symbol in FIG. 1, 9 is the cutting device before finishing formed in the entrance side of a finishing mill, and the front end and the rear end of a metal plate are cut | disconnected by this cutting device before finishing.

In addition, the arrangement | positioning of the cutting device 9 before finishing is suitably arrange | positioned according to the situation of a hot rolling facility, etc., An arrangement position, presence or absence, etc. are not limited to an example of illustration.

Here, below, the cutting device 10 before joining is demonstrated in detail with reference to FIG. 2 and FIG.

As shown in FIG. 2, the cutting device 10 before joining is arrange | positioned above the board | substrate path | route of the metal plates 6 and 7 in the housing 18, and is equipped with the two cutting blades 11a and 11b. The upper drum 13 and the lower drum 14 which are arrange | positioned under the board | substrate path | route of the metal plates 6 and 7, and are equipped with the two cutting blades 12a and 12b, The upper drum 13 and the lower drum It is a cutting device which rotates the drum 14 and cuts the metal plates 6 and 7.

In the above-mentioned joining cutting device 10 mentioned above, it has the guide rollers 42 and 52 which let the metal plates 6 and 7 pass through, and puts the metal plates 6 and 7 between the upper drum 13 and the lower drum 14. Guiding guide mechanisms 40 and 50 are formed. In the cutting device 10 before joining, the guide mechanisms 40 and 50 are separated from the guide positions for guiding the metal plates 6 and 7 between the upper drum 13 and the lower drum 14 and from the guide positions. Thus, moving mechanisms 60 and 70 (moving means) for moving between the retracted positions that are outside the plate path of the metal plate are formed. A plurality of table rollers 19 are arranged on the entry and exit sides of the metal plates 6 and 7 of the cutting device 10 before joining, whereby the metal plates 6 and 7 are plated.

The upper drum 13 is formed in the substantially elliptical shape which has long diameter and short diameter in the cross section along a rotation direction. The cutting blade 11a and the cutting blade 11b are arrange | positioned facing the circumferential surface of the circular arc shape which forms the long diameter of the upper drum 13. As shown in FIG. That is, the cutting blade 11a and the cutting blade 11b are arrange | positioned on the same plane in the circumferential surface of the circular arc shape which forms the long diameter of the upper drum 13. As shown in FIG. When the metal plates 6 and 7 are not cut | disconnected, the long diameter (cutting blade 11a and cutting blade 11b) of the upper drum 13 is arrange | positioned in a horizontal position, and the upper drum 13 is stopped. .

On the other hand, the lower drum 14 is formed in substantially circular shape in the cross section along a rotation direction. The cutting blade 12a and the cutting blade 12b are disposed opposite to the circumferential surface of the lower drum 14. That is, the cutting blade 12a and the cutting blade 12b are arrange | positioned on the same plane in the peripheral surface of the lower drum 14. As shown in FIG. In addition, on the outer circumference of the lower drum 14, a plurality of protrusions 14a protruding outward are formed. When the metal plates 6 and 7 are not cut | disconnected, the cutting blade 12a and the cutting blade 12b are arrange | positioned in the horizontal position, and the lower drum 14 is stopped.

In addition, the upper drum 13 and the lower drum 14 mentioned above are rotationally driven by the drive source which is not shown in figure.

As shown in FIG.2 and FIG.3, the guide mechanisms 40 and 50 mentioned above are arrange | positioned at the entrance side and the exit side of the metal plates 6 and 7 of the cutting device 10 before joining, respectively. The guide mechanisms 40 and 50 disposed on the entry and exit sides of the metal plates 6 and 7 of the cutting device 10 before joining support the guide rollers 42 and 52 so as to be rotatable, and have a box shape with an open upper side. The guide mechanism main body 41 which consists of the attachment parts 41a and 51a of the support part, and the support parts 41b and 51b which support the rotatable movement via the shafts 81 and 82 successively to this attachment parts 41a and 51a. , 51). Gears 43 and 53 are formed at the ends of the guide rollers 42 and 52, respectively. These gears 43 and 53 are not shown via the first gears 44 and 54, the second gears 45 and 55, the shaft joints 46 and 56, and the shafts 47 and 57, respectively. Is connected to the motor. By driving this motor, the guide rollers 42 and 52 rotate, and the metal plates 6 and 7 are plated by this rotation.

While the attachment portions 41a and 51a of the guide mechanism bodies 41 and 51 described above are located on the lower drum 14 side, they are located below the plate paths of the metal plates 6 and 7, and the lower drum ( 14 are provided with side walls 48 and 58 extending along the outer periphery, and shielding members 49 and 59 for shielding only the upper side in the vicinity of the side walls 48 and 58. That is, when the moving mechanisms 60 and 70 position the guide mechanisms 40 and 50 in the guide position, the shield members 49 and 59 disposed between the guide rollers 42 and 52 and the lower drum 14. By providing the metal plates 6 and 7, the metal plates 6 and 7 are prevented from being pinched between the guide rollers 42 and 52 and the lower drum 14 due to the metal plates 6 and 7 being turned down. ), Further improves mail flow.

The above-described moving mechanisms 60 and 70 include cylinders 62 and 72, one end of which is rotatably fixed via the shafts 61 and 71, and rapid delivery such as oil pressure into the cylinders 62 and 72 ( Iii) rods 63 and 73 which are stretched and contracted. The tip ends 63a and 73a of the rod are supported by the guide mechanism bodies 41 and 51 via the shafts 64 and 74, respectively.

In the above-mentioned pre-bonding cutting device 10, when the moving mechanisms 60 and 70 position the guide mechanisms 40 and 50 at the guide positions, the lower drum 14 is controlled to control the lower drum 14. The lower drum control apparatus (lower drum control means) which is not shown in which the protrusion part 14a is arrange | positioned close to the shielding members 49 and 59 of the guide mechanism 40 and 50 is formed.

That is, in the above-mentioned pre-bonding cutting device 10, when not using the guide mechanisms 40 and 50, such as processing the continuous strip steel which joins several metal plate, to the cylinder 62, 72, The rods 63 and 73 are contracted by the rapid supply and discharge of the hydraulic pressure, and with this, the guide mechanisms 40 and 50 are rotated and pulled up with the shafts 64 and 74 as the support points, and the metal plates 6 and 7 It is arrange | positioned at the retracted position which is outside of the board | substrate path | route of. On the other hand, when using the guide mechanisms 40 and 50, such as processing a single metal plate, the rods 63 and 73 are extended by the hydraulic supply / discharge of the cylinders 62 and 72, and a shaft body is accompanied by this. The guide mechanisms 40 and 50 are rotated and pulled down with 64 and 74 as a support point, and are arrange | positioned at the said guide position. Therefore, when the guide mechanisms 40 and 50 are positioned at the guide position, the guide rollers 42 and 52 are arranged in the plate path of the metal plates 6 and 7, and these guide rollers 42 and 52 are arranged on the metal plate ( Since 6 and 7 are supported, the distance between the table roller 19 and the guide rollers 42 and 52 becomes shorter than the distance between the table rollers arranged at the entrance and exit of the conventional cutting device, and the metal plate 6 7) the cutting of the cropped into the removal space, which is formed on the inlet and the outlet of the cutting device 10 before joining by the upside down and the downside down and the bending of the metal plates 6, 7 itself. It can suppress and the board | substrate property of the metal plates 6 and 7 in the cutting device 10 before joining improves. In addition, since the shielding members 49 and 59 are disposed close to the protrusion 14a of the lower drum 14, the metal plates 6 and 7 are sandwiched between the lower drum 14 and the guide mechanisms 40 and 50. It is prevented and the board | substrate of the metal plates 6 and 7 further improves.

Therefore, according to the cutting device 10 which concerns on the 1st Example of this invention, when the moving mechanism 60,70 has positioned the guide mechanism 40, 50 in the guide position, the cutting device 10 before joining is carried out. The guide rollers 42 and 52 are arrange | positioned at the entrance side and the exit side of the metal plates 6 and 7 in the table, and the table rollers 19 through which the metal plates 6 and 7 are plated. Therefore, these guide rollers 42 and 52 can support the metal plates 6 and 7, and the distance between the table roller 19 and the guide rollers 42 and 52 can be moved to the entrance and exit of the conventional cutting device. It can be made shorter than the distance between the table rollers to be arranged, and the side of the cutting device 10 before joining by being folded up and down of the metal plates 6, 7 and bending of the metal plates 6, 7 itself and Interruption of the cut crop formed in the exit side to the removal space can be suppressed, and the sheet-flow property of the metal plates 6 and 7 in the cutting device 10 before joining improves. In addition, the movement mechanisms 60 and 70 position the guide mechanisms 40 and 50 at the retracted position, thereby ensuring a space for removing the cropped crop. Moreover, the position adjustment of the guide mechanism 40, 50 by the movement mechanism 60, 70 is also easy, and the fall of productivity can be suppressed.

In addition, in the above, it demonstrated using the pre-bonding cutting device 10 in which the guide mechanism 40, 50 was formed in both the entrance side and the exit side of the metal plates 6 and 7, but such a guide mechanism was entered into the metal plate side. Or it can also be set as the cutting device before joining formed only in one side of this exit side. Even such a pre-bonding cutting device exhibits the same effects as those of the pre-bonding cutting device 10 described above.

In the above, it was explained using the pre-bonding cutting device 10 having the moving mechanisms 60 and 70 which are contracted and rotated upward to move from the guide position to the retracted position. In addition, it can also be set as the cutting device before joining provided with the movement mechanism which moves to the retracted position separated from the said guide position by rotating downward by extension. Even such a pre-bonding cutting device exhibits the same effects as those of the pre-bonding cutting device 10 described above.

The present invention can be used for a cutting device.

1 is a schematic view of a hot rolling mill having a cutting device according to a first embodiment of the present invention.

2 is a side view of a cutting device according to a first embodiment of the present invention.

It is a top view of the guide mechanism with which the cutting device which concerns on 1st Example of this invention is equipped.

Explanation of symbols for the main parts of the drawings

1 Roughing Mill

2 coil box

3 adapter

4 finishing rolling mill

5 down coiler

6 metal plate (trailing metal plate)

7 Leading metal plate

9 Cutting device before finishing

10 Cutting device before splicing

11, 12 cutting blade

13 upper drum

14 lower drum

18 housing

40, 50 guide mechanism

42, 52 guide roller

60, 70 moving mechanism

Claims (3)

A cutting device which is disposed above and below a plate path of a metal plate, and includes a top drum and a bottom drum on which a cutting blade is mounted, and cuts the metal plate by rotationally driving the top drum and the bottom drum. A guide mechanism disposed at the inlet side or the outlet side of the plate path of the metal plate, or both of them, and having a guide roller through which the metal plate is plated to guide the metal plate between the upper drum and the lower drum; And a moving means for moving said guide mechanism between a guide position for guiding said metal plate between said upper drum and said lower drum, and a retracted position spaced apart from said guide position. The method of claim 1, And a shielding member disposed between the guide roller and the lower drum when the moving means positions the guide mechanism at the guide position. The method of claim 2, Protrusions are formed on the outer circumference of the lower drum, And a lower drum control means for controlling the lower drum to position the protruding portion close to the shielding member when the moving means positions the guide mechanism at the guide position.

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