JP2524051B2 - Method and apparatus for changing backup roll assembly of rolling mill, etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reassembling method and a reassembling apparatus for a backup roll assembly such as a rolling mill and a roll type wiper (oil removing machine).

[0002]

2. Description of the Related Art There are a porter bar system and a trolley system as roll changing technologies for rolling mills. The hanging roll is inserted into or removed from the mill housing.

On the other hand, the trolley system is to recompose by connecting a roll shaft end to a recombining trolley that can move forward and backward with respect to a rolling mill and can move up and down.

[0004]

The porter bar system or the bogie system does not cause any problems in the combination of the rolling rolls in which the roll shaft and the roll (bearing) are integrated, but the backup roll and the saddle are alternated. Placed in
When changing the backup roll assembly in which the roll shaft is skewed to these, since the saddle swings around the axis of the roll shaft, it is very difficult to insert it into the roll mounting portion of the rolling mill, It took time and labor to change the rolls, which required a lot of time and labor, and resulted in a long downtime of the rolling mill.

Further, since the roll shaft is bent due to its own weight, it is more difficult to reassemble the rolls, and it is also difficult to properly insert the rolls into the roll mounting portion. Therefore, in the present invention, backup rolls and saddles are alternately arranged (arranged),
It is an object of the present invention to provide a roll reassembling method and a reassembling device by a trolley in a state in which the entire roll length of a backup roll assembly having a skewed roll shaft is reliably positioned and held.

[0006]

SUMMARY OF THE INVENTION The present invention according to claim 1 is a reassembling trolley that is capable of advancing and retreating, traversing, and ascending and descending with respect to the working side of a rolling mill 1 or the like.
11 and the chuck head 12 provided on the reassembling carriage 11 is attached to the shaft end of the roll shaft 10 of the backup roll assembly 6 in which the roll shaft 10 is skewed to the backup roll 7 and the saddle 9 which are alternately arranged. A method of connecting the backup roll assembly 6 by using the rearrangement carriage 11 by connecting the support rods 15 extending from the chuck head 12 in the roll axis direction from both sides of the saddle 9. With the saddle 9 swinging around the axis of the roll shaft 10 positioned, the backup roll assembly 6 stands by on the working side of the rolling mill 1 and the like, and then the reassembling trolley 11 is rolled while maintaining the positioning state. It is characterized in that the backup roll assembly 6 is inserted into the roll mounting portion 4 of the rolling mill 1 or the like in the axial direction of the roll by advancing toward the rolling mill 1 or the like.

The present invention according to claim 2 is provided with, on the working side of the rolling mill 1 or the like, a reassembling carriage 11 which can move forward and backward with respect to the rolling mill 1, etc. Roll axis 10 with backup roll 7 and saddle 9 placed
A reshuffling device for the backup roll assembly 6 comprising a chuck head 12 that can be connected to the shaft end of the roll shaft 10 of the backup roll assembly 6 skewed with A rod-shaped support 15 for positioning the saddle 9 that engages from both sides and swings around the axis of the roll shaft 10 is provided extending from the chuck head 12 along the roll axis of the backup roll assembly 6. A connector 16 that connects the supports 15 to each other and guides them in the rod longitudinal direction and that has a roll axial direction passage portion of the backup roll assembly 6 is provided at the tip of the support 15. .

[0008]

[Operation] Backup roll 7 and saddle arranged alternately
A chuck head 12 provided with a rearrangement carriage 11 is connected to an end portion of a roll shaft 10 of a backup roll assembly 6 which is formed by inserting a roll shaft 10 into a roller 9. On the other hand, a rod-shaped support 15 extending in the roll axis direction from the chuck head 12 is attached to the saddle 9
Since the saddle 9 has the mounting portion 8 by engaging from both sides, the swinging is restrained and positioned, and the ends of the support 15 are connected to each other by the connector 16 to hold the entire roll assembly 6. .

Therefore, the reassembling carriage 11 is moved up and down, traversed, etc. to stand by on the working side of the machine body 1, and the reassembling carriage 11 is advanced toward the machine body 1 so that the connector 16 is pressed against the machine body 1 and rolled. Insert the assembly 6 into the roll mounting section 4 of the machine 1.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a rolling mill 1 is provided with an upper housing 2 and a lower housing 3, both housings 2 and 3 are vertically movable relative to each other, and have roll mounting portions 4 and 5 at positions facing each other vertically.

A backup roll assembly 6 can be reassembled in the roll mounting portions 4 and 5 with the intermediate rolls, work rolls, etc. (not shown) pulled out from the roll mounting portions 4 and 5, and in FIG. The state where the solid 6 is inserted is shown. The backup roll assembly 6 is composed of rolls (bearings) 7 and saddles 9 having mounting portions 8 which are alternately arranged, and a roll shaft 10 which is skewed to form a reassembling carriage 11 provided on the working side of the rolling mill 1. Used to rearrange.

The reassembling carriage 11 is movable back and forth with respect to the rolling mill 1 as shown by an arrow A in FIG. 1, traverses as shown by an arrow B, and is vertically movable as shown by an arrow C. As shown by D, it has a rotatable chuck head 12, and a roll shaft is connected to the chuck head 12 via a connect 13.
It can be detachably fixed to the 10 shaft ends. A substantially fan-shaped support plate 14 is fixed to the chuck head 12, and a rod-shaped support 15 made of a pair of flat plate members or the like is extended on the support plate 14 in the roll axis direction. It is possible to position the backup roll assembly 6 which engages with the mounting portion 8 of the saddle 9 from both sides and swings in the direction of the arrow D. Furthermore, the extended ends of the pair of supports 15 are substantially gate-shaped. A connector 16 is provided and a pair of supports is provided by the connector 16.
Connecting 15 to each other.

As shown in FIG. 2, the connector 16 is formed with a pair of supports 15 which are formed with grooves 17 which are slidable relative to each other, and a bearing (roller) which relatively guides the circular arc surface of the mounting portion 8. Have eighteen. Referring to FIG. 8 and FIG. 9, the reassembling carriage 11 is capable of moving up and down by a telescopic cylinder 19 and is rotatable about a vertical axis 20.
The rail pedestal 21 is provided above the rail pedestal 21, and the rail pedestal 21 can be tilted with respect to the swivel pedestal 20 with a horizontal axis 22 in the horizontal direction as a fulcrum. It is possible with a claw feed mechanism (not shown).

The reassembling carriage 11 on the rail mount 21 can advance and retreat with respect to the rolling mill (machine body) 1 as indicated by arrow A and can traverse as indicated by arrow B. Therefore, this is also shown in FIGS. 4 and 5. As described above, the bevel gear mechanism 27 is provided on the handle shaft 25 of the forward / backward handle 24 and the screw shaft 26 arranged in the forward / backward direction.
The screw shaft 26 is screwed into the tubular portion 28 having a female thread provided at the lower portion of the reassembling dolly 11, and the reciprocating dolly 11 is moved forward and backward by a screw feed as shown in FIG. It is freely movable, and is guided by guide means 29 shown in FIG.

On the other hand, the traverse of the arrow B is as shown in FIGS. 4, 6 and 8 in which the traverse handle 31 is attached to the screw shaft 30 installed on the swivel base 20.
Is provided, the tubular body 32 having a female screw projecting from the lower portion of the rail mount 21 is screwed onto the screw shaft 30, and the rail mount 21 is screw-fed by the rotation operation of the traverse handle 31 so that the reassembling carriage 11 is indicated by the arrow B. As shown in FIG.
A guide bearing 34 is slidably fitted onto the guide shaft 33 indicated by to guide.

The chuck head 12 has a chuck 35 at its tip as shown in FIGS. 4 and 7, and the chuck 35 transmits the rotational operation of the handle 36 by a handle shaft 37 and opens / closes it via a taper slide key 38. The chuck 35 is arranged radially around the shaft center of the handle shaft 37 and engages with the engaging groove 39 formed on the outer periphery of the cylindrical connect 13 so as to be detachable. Connection bolt 40 inserted
Is connected to the shaft end of the roll shaft 10.

The chuck head 12 is shown by the arrow D in FIG.
In order to rotate or swing as shown in FIG. 4 and FIG. 7, the worm mechanism 43 is attached to the handle shaft 42 of the handle 41.
Is provided so that the support cylinder 44 of the chuck head 12 can be rotated around its cylinder center, and the chuck handle shaft 37 is inserted into the support cylinder 44. The support plate 14 supporting the base of the support 15 is substantially fixed to the connect 13, and the support 15 is fixed by the bolt 45 as shown in FIG. The rod body 49 protruding from the chuck head 12 is positioned in the combined body 46 by engaging with the engagement groove 46A.

Further, as shown in FIGS. 1 and 2, the rolling mill 1
A guide groove 47 through which the support 15 can be inserted is formed on both sides of the roll mounting portion 4 of the upper and lower housings 2 and 3 as shown in FIG. There is. Next, the roll changing operation will be outlined.
The chuck head is connected to the roll shaft 10 of
12 are connected to each other, and the roll assembly 6 positioned by the support 15 by the traverse operation B, the ascending / descending operation C, etc. of the reassembling carriage 11 is made to stand by, and the reassembling carriage 11 is placed on the roll mounting portion 4 of the rolling mill 1. Advance towards.

That is, the roll assembly 6 is the roll mounting portion.
When pushed into 4, the rod-shaped support 15 is almost
The guide groove 47 is inserted over the entire length, while the connector is
The support 16 is a rod-shaped support 1 in contact with the housing 1.
Since 5 slides in the groove 17 formed in the connector 16,
is there. At this time, since the support 15 is engaged with the mounting portion 8 of the saddle 9 from both sides, the skewered roll assembly 6 is prevented from moving and the bearing 18 of the connector 16 prevents the roll 18 and the saddle 9 from sliding. Will guide you through the roll group
The solid 6 is reliably pushed into the roll mounting portion 4.

After that, the reassembling carriage 11 is retracted, and the roll assembly 6 is mounted on the mounting portion 4 in the conventional manner. The roll assembly 6 is pulled out by connecting the chuck head 12 to the roll shaft 10 and retracting the reassembling carriage 11 with the reassembling carriage 11 advanced. The pulled-out roll assembly 6 is guided by the bearing 18 of the connector 16 and engaged by the pair of supports 15.
Can be pulled out while securely supporting.

In the above embodiment, the A of the rearrangement carriage 11 is used.
・ Movement and tilt in B direction, swing in D direction, etc.
Opening and closing of the electric motor, hydraulic motor, and chuck can be automated by using a cylinder or the like.

[0022]

The present invention is as described above, and even a skewered roll assembly supports the entire roll axial direction and can be replaced by using a carriage. Replacement work can be performed stably and quickly. By the way, in the porter bar method, all eight backup rolls are removed, but it takes 2 before inserting all eight new backup rolls.
The present invention took 50 minutes instead of 50 minutes, and was highly safe.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a front view showing a main part of the embodiment of the present invention.

FIG. 3 is a front view showing another main part of the embodiment of the present invention.

FIG. 4 is a side view showing the details of the reassembling vehicle according to the embodiment of the present invention.

5 is a cross-sectional view taken along the line EE of FIG.

FIG. 6 is a sectional view taken along line FF of FIG. 4;

FIG. 7 is a vertical cross-sectional side view showing details of the reassembling vehicle according to the embodiment of the present invention.

FIG. 8 is a plan view showing an entire embodiment of the present invention.

FIG. 9 is a side view showing the entire embodiment of the present invention.

[Explanation of symbols]

 1 Rolling mill (machine) 6 Backup roll assembly 7 Backup roll 9 Saddle 11 Change cart 12 Chuck head 15 Support 16 Connector

Claims (2)

(57) [Claims] 1. A rolling mill, etc. is provided on the working side of the rolling mill, etc. (1).
It is equipped with a reshuffling carriage (11) that can move back and forth with respect to (1), as well as traverse, and can move up and down, and the roll shaft (10) is skewed to the backup roll (7) and saddle (9) that are alternately arranged. The roll shaft (10) of the inserted backup roll assembly (6)
At the shaft end of the chuck head (1
A method for recombining the backup roll assembly (6) using the reassembling carriage (11) by connecting 2), wherein a rod-shaped support (15) extending in the roll axial direction from the chuck head (12). The backup roll assembly (6) with the saddle (9) positioned, which engages from both sides of the saddle (9) and swings around the axis of the roll shaft (10).
Standing by on the working side of (1), and then maintaining the above-mentioned positioning state, the reassembling carriage (11) advances toward the rolling mill (1), and the roll mounting part (4) of the rolling mill (1) ), The backup roll assembly (6) is inserted in the roll axial direction, and the method of reassembling the backup roll assembly of a rolling mill or the like is characterized. 2. The rolling mill etc. is provided on the working side of the rolling mill etc. (1).
It is equipped with a reshuffling carriage (11) that can move back and forth with respect to (1) as well as traverse, and can move up and down. The roll shaft (10) of the inserted backup roll assembly (6)
A chuck head (12) that can be connected to the shaft end of the
A rearrangement device for the backup roll assembly (6) provided in (11), the saddle (9) engaging from both sides of the saddle (9) and swinging about the axis of the roll shaft (10). A rod-shaped support (15) for positioning is provided extending from the chuck head (12) along the roll axis of the backup roll assembly (6), and the support (15) is attached to the tip of the support (15). The connector (1) which connects the two (15) to each other and guides them in the longitudinal direction of the rod, and which has a roll axial passage portion of the backup roll assembly (6).
6) A rearrangement device for a backup roll assembly of a rolling mill or the like, which is equipped with