JPS63119913A - Multistage rolling mill - Google Patents

Abstract

PURPOSE:To facilitate the change of work rolls and alignment by incorporating small diameter work rolls, support rolls, split rolls, etc., in a support block capable of taking out and making the chocks of intermediate rolls possible to control upper and lower positions. CONSTITUTION:The small diameter work rolls 13, 13', support rolls 19, 19' for bending these rolls horizontally, split rolls 18, 18 for pressing these, etc., are incorporated and supported freely attachably and detachably into the support blocks 4, 4' for the rolls, and the blocks 4, 4' are made possible to control the upper and lower positions and to take out from a housing 1 in the axial direction. Thus, changings between the four stages rolling and rolling through the small diameter work rolls are made possible to perform easily and in a short time. Further, at the opening part 8 of the blocks 4, 4', the clocks 11, 11' of the intermediate rolls 10, 10' are supported by chock support blocks 9, 9' through vertical bending cylinders 12, 12'. In this way, the alignment between the small diameter work rolls 13, 13' and the horizontal bending devices 20, 20' is facilitated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables materials that have been conventionally considered difficult to roll, such as difficult-to-process materials, ultra-thin materials, high-strength materials, and high-alloy steel, to be rolled according to demand. The present invention relates to a multi-high rolling mill that can be manufactured at low cost and with high quality and high productivity by changing the rolls during normal four-high rolling.

[Prior Art] Figure 6 shows an example of a conventional conventional four-high rolling mill.
Backup roll a, work roll b backed up to a',
b' is fixed block d, d fixed to housing C
' is supported through chocks e, e''.

In the above-mentioned 4-high rolling mill, when rolling using small diameter work rolls is required for rolling difficult-to-process materials, the 7-high rolling mill
As shown in the figure, instead of the work roll, an intermediate roll r
. A small-diameter work roll 1.l is arranged between the intermediate rolls f' and I'', and in the case shown, a small-diameter work roll 1
．． l.

is offset to the − side of the flow direction of material j, so
A support roll k is provided on the offset side.

A horizontal bending device 9!° for supporting and horizontally bending the small-diameter work roll 1.Io is fixed to the fixed blocks h and h' through the small-diameter work roll 1.Io. are divided rolls a, a+'' divided in the width direction and the divided rolls ff1. It is composed of pressing devices n, n' such as screws that press lQ' to the support roll and to n'.

[Problems to be Solved by the Invention] However, in the above conventional system, when changing from the four-high rolling mill shown in FIG. 6 to the rolling mill using small diameter work rolls shown in FIG. Very large-scale rearrangement and installation work is required, such as replacing the fixed blocks d and d', and fixing the horizontal bending device 1.1'.
Therefore, this change work requires a lot of effort and time, resulting in a decrease in productivity.Furthermore, when the diameters of the small diameter work rolls i and f' are changed, the horizontal bending device 1 Although it is necessary to perform center alignment in the rolling direction of .1', there was a problem in that this work was extremely difficult.

The present invention was made by focusing on the above-mentioned conventional problems.
To easily and quickly change between a 4-high rolling mill and a rolling mill using small-diameter work rolls, and also to easily align the small-diameter work rolls and horizontal bending equipment when changing the diameter of the small-diameter work rolls. It is intended to.

[Means for solving the problems] The present invention attempts to solve the above technical problems, and
The upper and lower roll support blocks, which can detachably incorporate and support a small-diameter work roll, support rolls and split rolls for horizontal bending of the small-diameter work roll, can be vertically adjusted and pulled out from the housing in the roll axis direction. In a multi-high rolling mill equipped with a multi-high rolling mill, a chock support block that supports a chock of an intermediate roll via a vertical bending cylinder is arranged in an opening formed in the roll support block, and the vertical position of the chock support block can be adjusted with respect to the roll support block. The present invention relates to a multi-high rolling mill characterized in that it is provided with a multi-high rolling mill.

[Function] Therefore, in the present invention, the small-diameter work rolls, support rolls, and split rolls of a multi-high rolling mill using small-diameter work rolls are removed from the roll support block, and the position of the chock support block is adjusted to bring the intermediate rolls closer together. Accordingly, it is possible to change the rolling mill to a four-high rolling mill using the intermediate roll as a work roll.

[Implementation example] Embodiments of the present invention will be described below with reference to screens.

Figure 1.2 shows an example of the present invention, in which the housing 1
Between the upper and lower backing rolls 3, 3°, the roll support blocks 4, 4° in two stages are placed between the upper and lower backing rolls 3, 3°, whose positions are adjusted vertically through backing roll chocks 2, 2°.
, the roll support blocks 4 and 4° are connected to each other so that the vertical position interval can be adjusted by a guide 5 and a distance adjustment device 6, and the roll support block 4.4' is inserted into the housing 1 in the roll axis direction, It is configured to be removable.

The roll support blocks 4, 4' have an opening 8 long in the width direction in the central part of the plane, and there is a space inside the opening 8 so that it can be moved up and down along the opening 8 and fixed in its position. A chock support block 9.9'' is provided, and intermediate rolls 1G, 10° backed up by the backing rolls 3, 3° are attached to the chock supporting block 9,9°.
The chock 11°11° is the vertical bending cylinder 1
2. Supported through 12°. Further, the intermediate rolls 10, 10' can be shifted in the axial direction by a shift cylinder 7.

Furthermore, a small-diameter work roll 13.13° is arranged between the upper and lower intermediate rolls 10.10', and its shaft end is pressed against the roll support block 4 by a presser roller 5 that presses via a presser cylinder 14. , 4 degrees.

On both sides of the small-diameter work roll 13, 13' in the direction of movement of the material 16, there is a common shaft 17 that is divided into a plurality of pieces in the width direction.
A split roll 18.18'' supported above is disposed via support rolls 19, 19'', and is attached and detached by a plurality of horizontal bending devices 20.20'' provided on the roll support blocks 4, 4°. The horizontal bending control of the small-diameter work rolls 13, 13' is controlled by changing the pressing amount of the divided rolls 18.18° in the width direction through a pressing block 21 that can freely rotate the support rolls 19. .19'' is supported at its shaft end via a support bearing 22 by the shaft 17 of the split roll 18.18°. In the figure, numeral 32 indicates the upper and lower stoppers of the chock support block 9.9'.

Further, as shown in FIGS. 4 and 5, the chock support blocks 9 and 9' are designed so that the vertical position relative to the roll support blocks 4 and 4 degrees can be significantly adjusted along the opening 8 to support the chock support blocks 9 and 9'. A height adjustment device 23.23° is provided.

As shown in FIG. 2, the height adjustment device 23, 23° in FIG. 9 degrees, and locking grooves 26 and 27 are provided at two locations above and below the locking convex portion 25, and the locking tool 28
and a locking cylinder 29 which is engaged with the locking groove 28.27 to fix the chock support block 9.9° to the roll support blocks 4, 4° at two positions above and below. It has a similar configuration.

Further, the height adjustment device 23.23° in FIG. 5 is a driving wedge operated by a locking cylinder 29 provided on the roll support block 4.4°, which connects the wedge 30 provided on the chock support block 9.9°. 31 is provided so that the vertical position of the chock support blocks 9, 9° can be adjusted steplessly.

Figure 1 shows a state in which a small-diameter work roll 13.13° is used to roll difficult-to-process materials, etc. The small-diameter work roll 13.13° is capable of vertical bending in the direction perpendicular to the rolling line. Intermediate roll io, to.

The split roll 1 is supported via support rolls 19 and 19' on the upstream and downstream sides in the rolling line direction.
8.18° to provide offset support and horizontal bending adjustment.

In the above, when the diameter of the small-diameter work rolls 13.13° changes, the distance adjustment device 6 is operated to adjust the vertical position of the roll support blocks 4, 4°. and support roll L9.19°
And centering of the divided rolls 18.18° can be easily performed.

The above small diameter work roll 13. When changing a multi-high rolling mill using L3° to a 4-high rolling mill, first pull out the roll support block 4.4° from inside the housing l in the roll axis direction, then retreat the presser roller 15 to roll the small diameter rolling mill. Remove the work roll L3.13°, remove the support bearing 22, remove the support roll 19.19°, and then remove the split roll 18.
．． 18°, remove the entire pressing block 21.

Subsequently, after inserting the roll support block 4.4° into the housing 1 again, the chock support blocks 9, 9 are moved so that the intermediate roll 10.10' approaches the intermediate roll 10.10' via the height adjustment device 23.23°. The position of intermediate roll 10.
A four-high rolling mill as shown in FIG. 3 is obtained by finely adjusting the roll gap necessary for rolling between 10' and 10'.

Thereby, normal four-high rolling can be performed using the intermediate rolls 10 and 10' as work rolls. Further, when changing from the above four-high rolling mill to a rolling mill using small diameter work rolls 13 and 13°, the rearrangement is performed by performing the reverse operation.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the intermediate roll may be replaced with a work roll during four-high rolling, the height adjustment method of the chock support block, and the horizontal adjustment of the small diameter work roll. It goes without saying that the bending method can be modified in various ways, and that various modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As described above, according to the multi-stage rolling mill of the present invention, the small-diameter work rolls, support rolls, and split rolls are removably attached to a roll support block whose vertical position is adjustable and which can be pulled out from the housing. In addition, since the intermediate roll is supported by a chock support block whose height can be adjusted with respect to the roll support block through the chock, 4
It is possible to easily and quickly change from a corrugated rolling mill to a rolling mill that uses small-diameter work rolls, and even if the diameter changes when using small-diameter work rolls, the vertical position of the roll support block can be adjusted. This provides an excellent effect of easily aligning the small-diameter work roll and the horizontal bending device.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
■-■ arrow view in the figure, Figure 3 is an explanatory diagram showing the rolling mill in Figure 1 changed to a four-high rolling mill, Figure 4 is an explanatory diagram of the height adjustment device, and Figure 5 is an explanatory diagram of the height adjustment device. Figure 4 is an explanatory diagram of another height adjustment device, Figure 6 is an explanatory diagram of a conventional four-high rolling mill, and Figure 7 is a conventional diagram when changing Figure 6 to a multi-high rolling mill using small diameter work rolls. FIG. 1 is a housing, 3 and 3 degrees are back rolls, 4 and 4 are roll support blocks, 6 is a spacing adjustment device, 8 is an opening, 9 and 9
° is a chock support block, 10, 10 ° is an intermediate roll, 11.11' is a chock, 12.12' is a vertical bending cylinder, 13, 13 ° is a small diameter work roll, 14
is the presser cylinder, 15 is the presser roller, 18.18° is the split roll, 19.19" is the support roll, 20.20
' is a horizontal bending device, 21 is a pressing block, 22
indicates the support bearing, and 23 and 23 degrees indicate the height adjustment device.

Claims (1)

[Claims] 1) Upper and lower roll support blocks that can detachably incorporate and support a small-diameter work roll, support rolls and split rolls for horizontal bending of the small-diameter work roll are vertically adjustable, and are mounted from the housing in the roll axis direction. In a multi-high rolling mill that is capable of being pulled out, a chock support block that supports a chock of an intermediate roll via a vertical bending cylinder is placed in an opening formed in the roll support block at a vertical position relative to the roll support block. A multi-high rolling mill characterized by being adjustable.