JP2805585B2 - Transfer equipment for rolling mills - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer for a rolling mill which reciprocates a rolled material so that the rolled material repeatedly passes between a pair of opposing work rolls provided in the rolling mill. It concerns the device.

[0002]

2. Description of the Related Art FIG. 6 is a plan view of an example of a conventional transporting apparatus for a rolling mill, and FIG. 7 is a longitudinal sectional view of the transporting apparatus for a rolling mill shown in FIG. Referring to FIG. 6 and FIG.
Has a transfer device main body 10 and a drive roller 21 arranged in parallel with the upper edge of the main body 10. A transfer wheel 11 is provided at a lower portion of the transfer device main body 10. The drive roller 21 is connected to a DC motor 25 via a roller chain 24.
It is configured to rotate by the driving force of.

[0003] When a rolling operation is performed using the transfer device 1, the transfer devices 1 are arranged on both sides of the rolling mill 7. In this arrangement work, the leading end of the transport device 1 (the rolling mill 7)
The portion closest to the work roll 72 provided on the rolling mill 7 is mounted on the stands 7 provided on both sides of the rolling mill 7 respectively.
The fixing plate 12 provided on the transfer device main body 10 is fixed to the stand 70 of the rolling mill 7 using bolts 13 by being manually pushed inward from zero. in this way,
The transport device 1 is configured such that its tip is incorporated into the inside of the stand 70 of the rolling mill 7 for use. At this time, the driving roller 21-1 at the tip of the transport device 1 is It is located right next to the work roll 72. On the other hand, the wheel 1 near the tip of the transfer device 1
1 is located outside the stand 70 of the rolling mill 7. For this reason, some of the drive rollers 21 arranged at the end of the transfer device main body 10 on the side of the work roll 72 include:
It is closer to the work roll 72 side than the wheel 11 closest to the work roll 72 side. That is, some of the drive rollers 21 on the side of the work roll 72 are
It is overhanging from the wheel 11 on the side.

[0004] In the rolling operation, the driving roller 2 of the transfer device 1 is driven in accordance with the rotation of the work roll 72 of the rolling mill 7.
1 is rotated forward, backward, and stopped, and this operation is automatically repeated.
The rolling material 9 is rolled each time it passes through the work roll 72. Generally, the weight of the rolled material (for example, molybdenum) 9 is 10 kg, and this 10 kg of the rolled material has a length of 1 kg.
Hot rolling is performed in the range of 00 m / m to 2000 m / m.

On the other hand, when the work roll 72 is to be rearranged for maintenance or the like of the work roll 72 of the rolling mill 7, the bolts 13 fixing the transfer device 1 to the rolling mill 7 are removed and the transfer device 1 is removed. In order not to disturb the rear end work of the work roll 72, the conveying device 1 is manually pulled out of the rolling mill 7 until the front end of the conveying device 1 comes out of the stand 70 of the rolling mill 7, afterwards,
The work roll 72 of the rolling mill 7 was pulled out to the working side of the rolling mill 7, that is, the side opposite to the side where the drive unit 8 (only the drive shaft is shown), and another work roll was incorporated.

[0006]

Recently, it has been desired to reduce the weight of a rolled material from 10 kg to 100 kg in order to improve productivity. However, conventionally, the rolling operation of a 10 kg material is mainly performed,
When the material is rolled, the strength of the conventional transfer device is insufficient, and there is a problem in durability. In particular, in the conventional transport device, there is a drive roller that overhangs from the wheel on the front end side as described above, and a problem easily occurs in the overhang portion. This is because, as the plurality of drive rollers provided in the transfer device are closer to the work roll, the time for supporting the rolled material is longer and the load is increased. The roller overhangs from the wheel on the tip side and has a cantilever structure,
This is because such a structure is weak in strength. Further, as described above, when rolling a 100 kg rolled material with a conventional transport device, there is a possibility that various problems may occur, and the reliability is poor. Can not be done.

In order to solve such a problem, it is only necessary to increase the size of the transfer device. However, simply increasing the size of the conventional transfer device may cause the following disadvantages. First, in the past, it took 30 minutes to move the transfer device alone to perform the work roll work of the rolling mill. However, when the transfer device was enlarged, it was very difficult to move the transfer device manually. And the movement alone cannot be performed in a short time. Conventionally, it is necessary to provide a space for moving the transfer device or to allow the device in the space to be easily moved in order to secure the space. It is difficult to secure the space, and even if the device in the space is moved, the movement becomes difficult due to the enlargement of the peripheral device accompanying the enlargement of the transport device, In addition, the moving distance becomes longer. Further, the conventional transport device has a portion that overhangs from the wheels as described above, but simply increasing the size of the transport device cannot compensate for the insufficient strength of the overhang portion. As described above, simply increasing the size of the conventional transport device may cause various inconveniences.

Therefore, an object of the present invention is to make it possible to easily perform the work of changing the work rolls of the rolling mill even if the size of the conveying device is increased so as to be able to convey the rolled material of 100 kg, and furthermore, the strength is reduced. An object of the present invention is to provide an excellent and highly reliable transport device for a rolling mill.

[0009]

According to the present invention, there is provided a rolling apparatus for transporting a rolled material reciprocally so that the rolled material repeatedly passes between a pair of opposed work rolls provided in a rolling mill. In the machine transport device, having a main transport device disposed outside the stand provided in the rolling mill, and an auxiliary transport device disposed inside the stand,
The main transfer device includes a main transfer device main body fixedly arranged on a floor surface outside the stand, and a drive roller arranged in parallel with an upper edge portion of the main body and configured to reciprocate the rolled material. Then, the auxiliary transport device has a roller disposed between the drive roller and the work roll closest to the work roll side, thereby obtaining a transport device for a rolling mill.

Further, according to the present invention, a rolling mill transfer device for reciprocatingly transferring a rolled material so that the rolled material repeatedly passes between a pair of opposed work rolls provided in the rolling mill. In the, having a main transport device disposed outside a stand provided in the rolling mill, and an auxiliary transport device disposed inside the stand, the main transport device is a floor surface outside the stand A main transfer device main body fixedly arranged on the main body, and a drive roller arranged in parallel with an upper edge portion of the main body to transfer the rolling material reciprocally; A free roller that is disposed between the drive roller and the work roll that are closer to the work roller; and the main transporting device is capable of freely moving toward and away from the free roller, and an auxiliary drive that drives the free roller. mechanism It mill conveying device is obtained, characterized in that has.

[0011]

The transfer device of the present invention is divided into a main transfer device and an auxiliary transfer device with the stand of the rolling mill as a boundary, and the main transfer device is fixedly arranged on the floor outside the stand of the rolling mill. The auxiliary transfer device is arranged inside a stand of the rolling mill. Therefore, only the auxiliary transport device can be integrated with the work roll of the rolling mill, or the auxiliary transport device can be detachably attached to the rolling mill.
For this reason, when performing the work roll rearrangement work of the rolling mill, the auxiliary transfer device is removed together with the work roll to perform the work roll rearrangement work, or when performing the work roll rearrangement work, the auxiliary transfer device is set to the rolling machine. The work roll can be changed simply by removing the work roll. As described above, in any case, it is not necessary to move the main transfer device main body during the work roll changing operation, so that the transfer device of the present invention can easily perform the work roll changing operation of the rolling mill even if the size is increased. Can be done.

Conventionally, it was necessary to overhang a drive roller provided at the tip of the transfer device in order to position the drive roller of the transfer device immediately adjacent to the work roll of the rolling mill. In the case of the invention, the rollers of the auxiliary transport device are disposed immediately adjacent to the work rolls of the rolling mill, so that it is not necessary to overhang the drive roller from the main transport device main body, and furthermore, the main transport device main body is
Because it is fixed on the floor, it is possible to take a structure that is strong against loads.

[0013]

FIG. 1 is a plan view of one embodiment of a transporting apparatus for a rolling mill according to the present invention, and FIG. 2 is a longitudinal sectional view of the transporting apparatus for a rolling mill shown in FIG.

Referring to FIGS. 1 and 2, a rolling mill 7 related to the transporting apparatus 1 for a rolling mill according to the present embodiment will be described first. The rolling mill 7 has a stand 70, a chock 71, and a work roll 72. Stand 7
Numeral 0 supports a drafting device (not shown) and the like. The chock 71 has a pair and is opposed to each other. The upper chock 71 is in contact with the screw-down device. The upper and lower chocks 71 are slidably in contact with the stand 70, respectively. There are a pair of work rolls 72, which face each other. The upper work roll 72 is rotatably supported by the upper chock 71, and the lower work roll 72 is rotatably supported by the lower chock 71. These work rolls 72 are driven by a drive device 8 (only a drive shaft is shown).

Next, with reference to FIGS. 1 and 2, a description will be given of a transporting apparatus 1 for a rolling mill according to the present embodiment. The transporting devices 1 for rolling mills are respectively provided on both sides of the rolling mill 7, and these transporting devices 1 each include a main transporting device 2,
And an auxiliary transport device 5. The main transfer device 2 is disposed outside the side surface 70 a of the stand 70 on the side of the work roll 72. The auxiliary transport device 5 is disposed inside the side surface 70 a of the stand 70 on the side of the work roll 72. The side surface 70 of the stand 70 on the side of the work roll 72.
The outside of the side 70a refers to the side without the work roll 72 on the side of the side surface 70a, and the inside of the side 70a of the stand 70 on the side of the work roll 72 refers to the side 7a.
It refers to the side where the work roll 72 is located with respect to 0a.

The main transfer device 2 includes a main transfer device main body 20 and
And a drive roller 21. The main body 20 is a housing having an open upper surface, and a fixing piece 22 is formed below the main body 20. The lower surface of the main body 20 is in contact with the floor surface a outside the side surface 70 a of the stand 70 on the side of the work roll 72. By fixing the fixing piece 22 to the floor surface a with the bolt 23, the main body 20 is fixed. Is the stand 70
Floor surface a outside the side surface 70a on the side of the work roll 72
It is fixedly placed on top. A large number of drive rollers 21 are rotatably arranged side by side at the upper edge of the main body 20. The drive roller 21-n provided at the rear end of the main body 20 (the farthest place from the work roll 72) is connected to a DC motor 25 provided in the main body 20 via a roller chain 24. , The motor is driven to rotate forward and reverse.
A driving roller 21-n provided at the rear end of the main body 20
Is connected to the remaining drive rollers 21 by a chain (not shown). Therefore, all drive rollers 21
The rolling material 9 is driven by a DC motor 25 to rotate forward and reverse, and conveys the rolled material 9 placed on the driving roller 21 in a reciprocating manner. On the other hand, when the main body 20 is
In the state of being fixedly arranged on the upper side, the tip (the end on the side of the work roll 72) 20a of the surface that comes into contact with the floor surface a of the main body 20 is the drive roller 21- It is located closer to the work roll 72 than the one rotation shaft. Therefore, the work roll 7 of the main transport device 2
At the end on the second side, an overhung drive roller 21
Does not exist. Also, at the rear end of the main body 20, there is no overhanging drive roller 21 as in the case of the front end.

In the case of this embodiment, the auxiliary transport device 5 comprises a plurality of free rollers 50. These free rollers 5
0 is a drive roller 21 provided at the tip of the main transfer device 2
-1 and the work roll 72 of the rolling mill 7, it is mounted on a lower chock 71 and is detachable from the chock 71.

FIG. 3 is a schematic diagram of an auxiliary drive mechanism provided in the main transfer device shown in FIG. Referring to FIG.
In order to drive the free roller 50 of the auxiliary transport device 5 described above, the main transport device 2 is provided with an auxiliary drive mechanism 27. The auxiliary drive mechanism 27 includes a first gear 28, a first gear
Roller chain 29, second gear 30, second roller chain 31, touch roller 32, air cylinder 3
3 and a rod 34. The first gear 28
It is arranged below a drive roller 21 provided in the main transfer device main body 20, and is connected to one of these drive rollers 21 via a first roller chain 29. Thereby, the rotation of the driving roller 21 is transmitted to the first gear 28,
The first gear 28 is configured to rotate in the same direction as the drive roller 21. The second gear 30 is the first gear 2
8 is engaged. Therefore, the second gear 30 rotates in the direction opposite to the driving roller 21. The touch roller 32 is
It is rotatably provided at the tip of a rod 34 provided in the air cylinder 33. The touch roller 32 is connected to the second gear 30 via the second roller chain 31 so that the touch roller 32
And rotate in the opposite direction. In addition, the touch roller 32 is
The gear 30 is rotatable about the rotation axis of the gear 30. The lower end of the air cylinder 33 is rotatably attached to the main body 20 by a clevis fitting 35, and the rod 3
4 can absorb the swinging motion of the tip.
Note that a trunnion may be used instead of the clevis fitting 35. The air cylinder 33 pushes or retracts the rod 34 so that the touch roller 32
About the rotation axis of the gear 30 of FIG.
2 is brought into contact with the free roller 50 of the auxiliary transport device 5, or the touch roller 32 is separated from the free roller. When the air cylinder 33 pushes the rod 34,
The touch roller 32 is pressed between adjacent free rollers 50 with a certain force, and the touch roller 32 rotates these free rollers 50 in the same direction and at the same speed as the drive roller 21. When the air cylinder 33 retracts the rod 34, the touch roller 32 is housed in the main body 20,
The stand 70 is located outside the side surface 70 a on the work roll 72 side. The rod 34 can be moved forward and backward by the air cylinder 33 with a single touch by turning on and off a switch (not shown). The air cylinder 33 is provided with an auto switch 36. When the rod 34 is retracted, the auto switch 36 is pressed by the rod 34 and the touch roller 32 is
A lamp (not shown) for notifying that the data is stored in 0 is turned on.

FIG. 4 is a front view of the self-aligning mechanism of the touch roller shown in FIG. 3, and FIG. 5 is a sectional view taken along line VV in FIG. 4 and 5, the touch roller 32 is supported by an automatic alignment mechanism 40. The self-aligning mechanism 40 includes a touch roller support 41, a touch roller receiver 42, a support pin 43, and a compression spring 44.
The touch roller support table 41 has a substantially U-shape, and has pillow blocks 45 on both sides thereof. The pillow blocks 45 rotatably support the shaft 37 of the touch roller 32. A connecting piece 46 is provided on the lower surface of the touch roller support 41. Touch roller support 4
2 has a substantially rod-like shape, one end of which is provided with a second gear 30.
Are rotatable about the rotation axis of the other end, and a pair of opposing connecting pieces 47 are provided on the upper surface of the other end.
A connecting piece 48 is also provided on the lower surface of the other end. The support pin 43 connects the connecting piece 46 of the touch roller supporting base 41 and the connecting piece 47 of the touch roller receiving base 42. In this state, a clearance A (5) is provided between the lower surface of the touch roller support 41 and the upper end of the touch roller receiver 42.
mm), so that the touch roller support 41 moves slightly back and forth about the support pin 43 along the transport direction of the rolled material 9. Further, the diameter of the hole 46a formed in the connecting piece 46 is larger (2 mm) than the diameter of the support pin 43, and there is a clearance B (2 mm) between the connecting piece 46 and the connecting piece 47. The touch roller support 41 is configured to slightly move in the axial direction of the free roller 50. As described above, the touch roller support base 41 is configured to be swingable back and forth and right and left. There are four compression springs 44, which are interposed between the lower surface of the touch roller support 41 and the upper surface of the touch roller receiver 42, and elastically support the touch roller support 41.

In the case of this embodiment, the maximum repulsive force of one compression spring 44 is about 25 kg. Since the total weight of the touch roller 32 and the touch roller support 41 is about 40 kg, which is smaller than the total maximum repulsive force of the compression spring 44 of about 100 kg, the clearance A is generated from the relative repulsive force of about 60 kg. The thrust in the pushing direction of the air cylinder 33 is about 300 kg, which is larger than the total maximum repulsive force of the compression spring 44 of about 100 kg. Therefore, when the touch roller 32 is pressed against the free roller 50, the clearance A is increased.
Is almost gone. At this time, since the free roller 50 and the touch roller 32 are installed independently of each other,
Between these, there is always a deviation in the front, rear, left and right directions, and the touch roller 32 has an uneven contact with the free roller 50. However, as described above, the touch roller support table 41 can swing back and forth and right and left and is elastically supported by the compression spring 44. Therefore, when the touch roller 32 is pressed against the free roller 50 by the air cylinder 33, the touch Even if the roller 32 hits the free roller 50 unevenly,
The touch roller 32 swings and hits the free roller 50 uniformly, and this state is maintained by the compression spring 44. As a result, the self-centering function is exhibited.

Each of the drive rollers 21 has a large diameter portion 21a and a small diameter portion 21b alternately in the axial direction thereof. The large-diameter portion 21a of the driving roller 21 is adapted to enter. Thereby, the arrangement pitch of the drive rollers 21 is
The driving roller 21 is shorter than the maximum diameter. The free roller 50 also has a large diameter portion 50a and a small diameter portion 50b alternately like the drive roller 21, and the two free rollers 50 are juxtaposed so that the large diameter portion 50a meshes with each other. I have. Thus, the arrangement pitch of the free rollers 50 is shorter than the maximum diameter of the free rollers 50.

In the case of the present embodiment, the auxiliary transport device 5 is composed of the free roller 50. However, the present invention is not limited to this, and the auxiliary transport device may be constituted by a drive roller or the like. In this case, the driving roller of the auxiliary transport device and the driving mechanism for driving the driving roller are unitized so that the driving roller and the driving mechanism for driving the driving roller can be detachably disposed inside the stand of the rolling mill. They may be integrated. Of course, in this case, the auxiliary drive mechanism of the main transport device provided in the present embodiment is unnecessary. Further, in the case of the present embodiment, the free roller 50 of the auxiliary transport device 5 is detachably provided on the chock 71 below the rolling mill 7, but it is not always necessary to configure in this way. The roller may be integrated with the work roll of the rolling mill. In the case of this embodiment,
Although the drive roller 21 is configured not to overhang at the front end and the rear end of the main body 20, it is preferable that the drive roller 21 be configured as described above. However, the present invention strictly eliminates the overhang of the drive roller. Rather, the overhang of the drive roller is allowed as long as the overhang of the drive roller is extremely small and there is no problem in strength.

[0023]

The transporting device for a rolling mill according to the present invention is divided into a main transporting device and an auxiliary transporting device with a stand of the rolling mill as a boundary. Since it is not necessary to move the apparatus main body, the transfer apparatus of the present invention can easily perform the work of changing the work rolls of the rolling mill even if the apparatus is enlarged.

Further, in the case of the transfer device for a rolling mill of the present invention,
Since the rollers of the auxiliary transport device are disposed immediately adjacent to the work rolls of the rolling mill, there is no need to overhang the drive roller from the main transport device main body, and the main transport device main body is fixedly disposed on the floor surface. As a result, it is possible to take a structure that is strong against a load. Therefore, according to the present invention, it is possible to provide a highly reliable rolling mill transfer device that does not have any problem even with a rolled material of 100 kg. it can.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a transport device for a rolling mill according to the present invention.

FIG. 2 is a longitudinal sectional view of the transfer device for a rolling mill shown in FIG.

FIG. 3 is a schematic view of a configuration of an auxiliary drive mechanism provided in the main transport device shown in FIG. 1;

FIG. 4 is a front view of an automatic centering mechanism of the touch roller shown in FIG. 3;

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a plan view of an example of a conventional transport device for a rolling mill.

FIG. 7 is a longitudinal sectional view of the transfer device for a rolling mill shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport device for rolling mill 2 Main transport device 5 Auxiliary transport device 7 Rolling machine 9 Rolled material 20 Main transport device main body 21 Drive roller 50 Free roller 70 Stand 72 Work roll

Claims (6)

(57) [Claims] 1. A transport device for a rolling mill for reciprocatingly transporting a rolled material so that the rolled material repeatedly passes between a pair of opposed work rolls provided in the rolling mill. It has a main conveyance device arranged outside the provided stand and an auxiliary conveyance device arranged inside the stand, and the main conveyance device is fixedly arranged on a floor outside the stand. A main transport device main body, and a drive roller arranged in parallel with an upper edge portion of the main body to reciprocate the rolled material, wherein the auxiliary transport device is the drive roller closest to the work roll side. And a roller disposed between the work roll and the work roll. 2. A transfer device for a rolling mill for reciprocatingly transporting a rolled material so that the rolled material repeatedly passes between a pair of opposed work rolls provided in the rolling mill, wherein It has a main conveyance device arranged outside the provided stand and an auxiliary conveyance device arranged inside the stand, and the main conveyance device is fixedly arranged on a floor outside the stand. A main transport device main body, and a drive roller arranged in parallel with an upper edge portion of the main body to reciprocate the rolled material, wherein the auxiliary transport device is the drive roller closest to the work roll side. And a free roller disposed between the work roller and the work roll, and the main transporting device further includes an auxiliary drive mechanism that can freely contact and separate from the free roller and that drives the free roller. Features Transfer device for rolling mills. 3. The auxiliary driving mechanism includes: a touch roller;
An automatic centering mechanism, wherein the touch roller is freely movable toward and away from the free roller, and drives the free roller.
The transport device for a rolling mill according to claim 2, wherein the touch roller corrects a displacement of the touch roller with respect to the free roller. 4. The apparatus according to claim 1, wherein a front end of a surface of said main body which is in contact with said floor surface is located closer to said work roll than said drive roller closest to said work roll. 3. The conveying device for a rolling mill according to 3. 5. A main transfer device main body fixedly arranged on a floor surface outside a stand provided in a rolling mill, and a drive arranged in parallel with an upper edge portion of the main body to transfer a rolled material reciprocally. A roller, and an auxiliary drive mechanism provided in the main body,
The auxiliary drive mechanism is configured to be able to freely contact and separate from a free roller of an auxiliary transport device disposed between the drive roller at the tip of the main body and a work roll provided in the rolling mill, and the free roller A main transport device for driving the main transport. 6. A roller disposed inside a stand provided in a rolling mill, the roller being disposed outside the stand and transporting the rolled material reciprocally with respect to the rolling mill. An auxiliary transport device, which is disposed between a drive roller at a tip of a main transport device and a work roll provided in the rolling mill.