JPH09314214A - Device for guiding strip in multi roll mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable making a material to be rolled thin in a multi-roll mill to which strip guides are mounted by providing the strip guides along the pass line and freely adjustably the position in the longitudinal direction on the inlet side and/or the outlet side of work rolls and preventing interference between the strip guides and intermediate rolls at the time of using small diameter work rolls. SOLUTION: Strip passing guides 8 are enabled rocking through supporting parts 19 and made so that the degree of vertical opening is adjustable. But, not only this structure but the structure in which the strip passing guides 8 are moved in the longitudinal direction with fluid pressure cylinders 15 is also added. When small diameter rolls are used as the work rolls 3, the strip passing guides 8 are separated from the work rolls and prevented from generating interference with the intermediate rolls 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip guide device used in a multi-high rolling mill.

[0002]

2. Description of the Prior Art As shown in FIG.
Generally, strip guides 52 for smoothly guiding the material to be rolled along the pass line P are provided on the inlet side and the outlet side of the work roll 51. The strip guides 52 are vertically opposed to each other with the pass line P sandwiched therebetween, and an intermediate portion in the direction along the pass line P has an upper or lower roll housing with a fulcrum portion 53 interposed therebetween. 54 is swingably held. Further, an elevation drive tool 55 constituted by a motor-driven screw feed mechanism, a fluid pressure cylinder, or the like is provided at an end of each strip guide 52 projecting to the outside of the roll housing 54.

Therefore, these strip guides 52 are
When the work roll 51 is replaced with one having a different diameter in order to change the thickness of the material to be rolled (the left half of FIG. 7 is the standard diameter work roll 51, and the right half is the large diameter work roll 51). In addition, as the roll housing 54 is moved up and down, the elevation drive tool 55 is operated to change the inclination. That is, by this, the opening degree (vertical space) between the tip portions of the strip guide 52 can be adjusted.

[0004]

To roll an extremely thin material such as foil as the material to be rolled, the work roll 5 is used.
Even if it is 1, it is necessary to use a considerably small diameter. However, when the work roll 51 having such a small diameter is incorporated, the vertical distance between the intermediate rolls 56 becomes narrow, so that the strip guide 52 sometimes interferes with the intermediate rolls 56. Therefore, the diameter of the work roll 51 is limited, and the reduction of the wall thickness of the material to be rolled is limited.

The present invention has been made in view of the above circumstances. Even if the diameter of the work roll is reduced, interference between the strip guide and the intermediate roll does not occur, and the thickness of the material to be rolled is further reduced. Another object is to provide a strip guide device for a multi-high rolling mill that can be recommended.

[0006]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, according to the present invention, a pair of upper and lower work rolls that are detachably replaceable are supported by an intermediate roll, and strip guides are provided on the entrance side and / or the exit side of the work rolls to adjust the position in the front-rear direction along the pass line. It is characterized by being provided freely.

Therefore, when a work roll having a small diameter is incorporated, by moving the strip guide backward in a direction away from the work roll, the tip end of the strip guide can be retracted outside the center position of the intermediate roll. Interference between the strip guide and the intermediate roll is prevented. As a result, the range of use of the strip guide can be expanded to work rolls with a small diameter, and the work roll can be made smaller in diameter, and it is possible to further reduce the thickness of the material to be rolled while using the strip guide. You can

Further, according to the present invention, a pair of strip guides are provided on the inlet side and / or the outlet side of a work roll of a multi-high rolling mill so as to face each other with a pass line interposed therebetween, and the tip end opening of these strip guides. It is characterized by having an opening degree adjusting means for making the variable according to the diameter of the work roll and a minute opening degree setting means for allowing the strip guide to approach or separate from the work roll.

With such a structure, when the work roll having a small diameter is incorporated to adjust the vertical distance of the roll housing, the opening adjusting means makes the inclination of the strip guide loose, and at the same time, the minute opening setting means. Due to
The strip guide can be moved away from the work roll. That is, since the tip end portion of the strip guide can be retracted outward with respect to the center position of the intermediate roll, the opening degree (vertical gap) of the strip guide is narrowed, and the strip guide and the intermediate roll are Interference can be prevented. As a result, the diameter of the work roll can be reduced, and the thickness of the material to be rolled can be further reduced.

The opening adjusting means includes a fulcrum portion for swingably holding an intermediate portion of the strip guide along the pass line, and a lifting drive tool for vertically moving an end portion of the strip guide outside the roll housing. The minute opening setting means includes a slide base for holding the fulcrum part of the opening adjusting means and the lifting drive tool so as to move back and forth in the pass line direction with respect to the roll housing, and the slide base to the work roll. It may be configured to have an advancing / retreating drive tool for advancing or retracting toward or away.

By adopting such a structure, the structure can be simplified.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 3 is a plan view showing a lower half portion of the strip guide device 1 according to the present invention, and FIG.
FIG. 3 is a side sectional view showing a situation in which the strip guide device 1 is mounted on the multi-stage rolling mill 2 at a portion corresponding to the line AA. FIG. 2 is a side sectional view showing a situation in which the strip guide device 1 is mounted on the multi-stage rolling mill 2 at a portion corresponding to the line BB in FIG.

The illustrated multi-stage rolling mill 2 is a 12-high rolling mill having a structure in which the work roll 3 is supported by two sets of intermediate rolls 4 and three sets of backup rolls 5. The work rolls 3 are recombined by moving the upper roll housing 6 up and down. The strip guide device 1 is provided separately on the inlet side and the outlet side of the work roll 3 (only one side is shown in the drawing). Then, a pair of strip guides 8 provided vertically opposite to each other with the pass line P of the multi-stage rolling mill 2 interposed therebetween, and the tip end opening degree (vertical space) of these strip guides 8 are adjusted according to the vertical movement of the roll housing 6. Opening control means 10 for making variable
And a forward / backward moving means 11 that enables the strip guide 8 to move toward or away from the work roll 3.

The strip guide 8 is formed in a plate shape having a predetermined width in the roll axial direction, and the inside thereof is
A coolant supply path (not shown) is provided from the root side toward the tip side, and the coolant liquid can be jetted toward the work roll 3 being rolled through the coolant supply path. The forward / backward moving means 11 is provided on the roll housing 6 so as to be movable back and forth along the path line P direction (see FIG. 4).
And a forward / backward drive tool 15 for advancing or retracting the slide base 14 toward the work roll 3.

A fluid pressure cylinder is used as the advancing / retreating drive tool 15, the main body side of which is fixed to the roll housing 6 via a bracket 16, and the rod end portion of which is a slide side bottom surface portion of the slide base 14. Protruding piece 1 provided on the
7 is connected. A motor-driven screw feed mechanism or the like can be used instead of such a fluid pressure cylinder.

The opening adjusting means 10 is a strip guide 8
A fulcrum portion 19 that swingably holds an intermediate portion along the path line P with respect to the slide base 14, and a lift drive tool 20 that vertically moves an end portion of the strip guide 8 that is outside the roll housing 6. have. A fluid pressure cylinder is used for the lifting drive tool 20, and its main body side is fixed to a bracket 21 provided on the sliding side bottom surface portion of the slide base 14,
The rod end portion is connected to the rear portion of the strip guide 8 via a hinge tool 22. A motor-driven screw feed mechanism or the like can be used instead of such a fluid pressure cylinder.

The strip guide device 1 having such a configuration
When the up-and-down drive tool 20 of the opening adjustment means 10 is operated, the strip guide 8 swings around the fulcrum portion 19, whereby the tip end opening of the upper and lower strip guides 8 can be changed. Also, the forward / backward movement means 11
When the advancing / retreating drive tool 15 of FIG.
The strip guide 8 through the work roll 3
It can be moved to or away from.

Therefore, for example, when the work roll 3 having the standard diameter is assembled into the work roll 3 having a larger diameter, the upper roll housing 6 is used.
After performing the roll rearrangement work by raising
The up-and-down drive tool 20 of 0 is operated to change both the upper and lower strip guides 8 into a predetermined steep inclination state, and in this state, the vertical interval of the roll housing 6 is adjusted.

When the work roll 3 having the standard diameter is to be reassembled thereafter, the upper roll housing 6 is raised to perform the roll reassembling work, and then the lift drive tool 20 of the opening adjusting means 10 is operated. Upper and lower strip guides 8
Is changed to a predetermined gentle inclination state, and the vertical interval of the roll housing 6 is adjusted in this state. On the other hand, when changing the roll from the state in which the work roll 3 having the standard diameter is installed to the work roll 3 having a smaller diameter, the upper roll housing 6 is lifted to perform the roll changing operation, and then the forward and backward movement is performed. The advancing / retreating drive member 15 of the means 11 is operated so that the upper and lower strip guides 8 are separated from the work roll 3. Then, the elevating and lowering drive tool 20 of the opening degree adjusting means 10 is operated to adjust both the upper and lower strip guides 8 to a more gentle inclination, and in this state, the vertical interval of the roll housing 6 is adjusted.

With this arrangement, for example, when the work roll 3 having the standard diameter is incorporated as shown in FIG. 5, the distance S (S = S = S) is provided between the work roll 3 and the strip guide 8.
3 mm), and when the work roll 3 is replaced with one having a smaller diameter as shown in FIG.
Distance L between work roll 3 and strip guide 8
(L> S). Therefore, even if the vertical distance between the intermediate rolls 4 becomes narrower as the diameter of the work roll 3 becomes smaller, the interference between the strip guide 8 and the intermediate roll 4 can be prevented.

In practice, the work roll 3 having a diameter of about 20% can be incorporated into the work roll 3 having the standard diameter. By the way, the present invention is not limited to the above embodiments. For example, the configuration (the number of roll stages, etc.) of the multi-high rolling mill 2 itself is not limited at all.

Further, the lifting / lowering drive tool 20 of the opening degree adjusting means 10, the forward / backward drive tool 15 of the forward / backward moving means 11 and the like may have a structure other than that described above.

[0023]

As is apparent from the above description, in the present invention, a pair of upper and lower work rolls that can be attached and detached and replaced is supported by the intermediate roll, and strips are provided on the inlet side and / or the outlet side of the work roll. Since the guide is provided along the path line so that the position can be adjusted in the front-rear direction, it is possible to prevent interference between the strip guide and the intermediate roll when using a small-diameter work roll, and the material to be rolled in the multi-high rolling mill equipped with the strip guide. Can be thinned.

Further, a pair of strip guides which are vertically opposed to each other with a pass line interposed between the strip guides on the inlet side and / or the outlet side of the work roll of the multi-stage rolling mill, and the tip end openings of these strip guides are set to the work roll. Since the structure has an opening adjusting means that is variable according to the diameter and a forward-backward moving means that allows the strip guide to move closer to or away from the work roll, the work having a diameter smaller than the standard diameter in the multi-stage rolling mill is used. When a roll is incorporated, the strip guide can be gently tilted by the opening adjusting means and can be separated from the work roll by the forward / backward moving means. Therefore, the interference between the strip guide and the intermediate roll can be prevented, and as a result, the diameter of the work roll can be reduced, that is, the thickness of the material to be rolled can be reduced.

Further, by retracting the strip guide, an insertion space for the roll changing jig can be created between the work roll assembling position and the strip guide, so that the work roll can be automatically changed. become,
Therefore, the idle time can be shortened and the number of operators can be reduced. The opening adjustment means includes a fulcrum portion that swingably holds an intermediate portion of the strip guide along the pass line, and a lifting drive tool that vertically moves an end portion of the strip guide outside the roll housing. The forward / backward moving means includes a slide base for holding the fulcrum part of the opening degree adjusting means and the lifting / lowering drive tool so as to be able to move forward and backward in the pass line direction with respect to the roll housing, and a forward and backward movement for moving the slide base forward or backward toward the work roll. With the configuration including the drive tool, the opening adjustment means and the forward / backward movement means can be configured with a simple structure.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a situation in which a strip guide device is mounted on a multi-high rolling mill, taken along a line AA line in FIG.

FIG. 2 is a side cross-sectional view showing a state in which the strip guide device is attached to a multi-high rolling mill at a portion corresponding to the line BB in FIG.

FIG. 3 is a plan view showing a lower half portion below a pass line in an embodiment of the strip guide device according to the present invention.

FIG. 4 is a front cross-sectional view showing a state in which the strip guide device is mounted on a multi-stage rolling mill at a portion corresponding to line C-C in FIG. 3.

FIG. 5 is a diagram showing a set position of a strip guide with respect to a work roll having a standard diameter.

FIG. 6 is a diagram showing a set position of a strip guide with respect to a work roll having a small diameter.

FIG. 7 is a side view showing a set state of a work roll having a standard diameter and a work roll having a large diameter in a conventional multi-high rolling mill.

[Explanation of symbols]

 1 strip guide device 2 multi-stage rolling mill 3 work roll 6 roll housing 8 strip guide 10 opening adjustment means 11 forward / backward movement means 14 slide base 15 advancing / retreating drive tool 19 fulcrum section 20 lifting drive tool P pass line

Claims (3)

[Claims] 1. A pair of upper and lower removable work rolls (3) are supported by an intermediate roll (4), and a strip guide (8) is provided on the inlet side and / or the outlet side of the work roll (3). A strip guide device for a multi-high rolling mill, the position of which is adjustable along the pass line (P) in the front-rear direction. 2. A work roll (3) for a multi-high rolling mill (2).
The pair of strip guides (8) provided on the inlet side and / or the outlet side of the strip guide (8) so as to face each other with the pass line (P) interposed therebetween, and the tip end opening degree of these strip guides (8) is determined by the work roll (3). An opening adjustment means (10) that is variable according to the diameter of the work roll, and a forward-backward movement means (11) that enables the strip guide (8) to move toward and away from the work roll (3). A strip guide device for a multi-high rolling mill. 3. The opening adjusting means (10) includes a fulcrum portion (19) for swingably holding an intermediate portion of the strip guide (8) along the pass line (P) and a strip guide (8). It has a lifting drive tool (20) for vertically moving the outer end of the roll housing (6), and the forward / backward movement means (11) is a fulcrum portion (1) of the opening adjustment means (10).
9) and the lifting drive tool (20) are installed in the roll housing (6)
A slide base (14) that holds the slide base (P) so that it can move back and forth in the direction of the pass line (P), and the slide base (14).
The strip guide device for a multi-high rolling mill according to claim 2, further comprising an advancing / retreating drive tool (15) for advancing or retracting the sheet toward the work roll (3).