JPH05277528A - Rolling mill - Google Patents

Abstract

(57) [Summary] [Structure] Guide member 1 for housing post 12
3 is slidably connected by a driving device 14 such as a plunger, and an arc-shaped guide piece 13a formed on the guide member is slidably attached to the housing post, so that the guide member has an arc shape. Make it slide. Then, the shaft box 11 that supports the roll 10 with respect to the guide member is connected to the connecting mechanism 15 such as a key.
It is removably attached by. [Effect] By setting the slide amount of the guide member by the drive device, the pair of rolls can be crossed with each other, and the center points of the intersections can be prevented from shifting. In addition, the roll can be attached to and detached from the guide member together with the axle box only by operating the connecting mechanism, and the roll replacement work can be easily performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling mill of a type in which a pair of rolling rolls are made to cross each other by inclining the rolling rolls in a direction opposite to the width direction of the rolled material, that is, a so-called cross mill.

[0002]

2. Description of the Related Art Known rolling mills of this type are disclosed in, for example, Japanese Patent Publication No. 50-24903 and Japanese Patent Publication No. 52-1701. FIG. 4 schematically shows the rolling mills shown in those publications, in which a shaft box (chock) 2 for rotatably supporting both ends of a roll 1 is formed into an arc-shaped guide groove 3, 3 is supported, and the roll boxes 1 and 2 are slanted in an arc shape along the guide grooves 3 and 3 by the tilt drive devices 4 ...
In this case, the guide grooves 3 for supporting the shaft box 2 and guiding the slide thereof are provided by attaching the inner guide plate 3a and the outer guide plate 3b to the housing post 5, respectively. In addition, as shown in FIG. 5, only the shaft box 2 on one end side of the roll 1 is guided and slid by the guide groove 3 having an arc shape in the same manner as described above, and the shaft box 6 on the other end side is a chock holder. It is configured to be rotatably supported with respect to 7.

[0003]

By the way, in the above-described conventional rolling mill, since the shaft box 2 is directly supported by the arcuate guide groove 3, and the slide is guided, the roll 1 It is necessary to disassemble the guide groove 3 every time replacement work is performed. That is, every time the roll 1 is replaced, the work of removing the inner guide plate 3a and the outer guide plate 3b from the housing post 5 and then reassembling them is required. Therefore, the roll replacement work is more time-consuming than in the case of a conventional rolling mill. However, there was a problem that it increased significantly.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a roll-cross type rolling mill which can easily perform roll replacement work.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a rolling mill of the type in which a pair of rolls intersect each other by inclining the pair of rolls in directions opposite to each other with respect to the plate width direction of the rolled material. A shaft box that rotatably supports the section is attached to the housing post via a guide member that rotates along an imaginary arc centered on the intersection center point of the rolls and slides in the rolling line direction, The guide member is slidably connected to the housing post by a driving device, and an arcuate guide piece formed on the guide member is slidably mounted on the housing post. It is a feature. In this case, the axle box is detachably attached to the guide member by a connecting mechanism, and the connecting mechanism is formed on both the guide member and the axle box and meshes with each other. Therefore, it is preferable that a plurality of concave and convex portions can transmit the thrust force applied to the roll.

[0006]

In the rolling mill of the present invention, the guide member is connected to the housing post by actuating the drive device to slide the guide member in an arc shape, and the shaft mounted to the guide member. Slide the end of the roll in an arc through the box. Then, the axle box is detachably attached to the guide member by the connecting mechanism, so that when the roll is replaced, the roll is removed from the guide member together with the axle box by the operation of the connecting mechanism, and attached. Further, by adopting a coupling mechanism of a type formed on both the guide member and the shaft box and engaging a plurality of concave and convex portions with each other, the thrust force applied to the roll is dispersed and transmitted by the large number of concave and convex portions.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a cross mill similar to that shown in FIGS. 4 and 5, that is, by inclining pairs of rolls in mutually opposite directions with respect to the strip width direction of the rolled material (horizontal direction orthogonal to the rolling line). It is a top view showing only one end side of the structure of the bearing part of the roll in the rolling mill of the type which crosses these rolls.

In FIG. 1, reference numeral 10 is a roll (upper roll), 11 is a shaft box for rotatably supporting the end portion of the roll 10, 12 is a pair of housing posts for supporting the shaft box 11, and 13 is a shaft. Box 11 to housing post 12, 1
A pair of guide members respectively provided between the shaft box 11 and the housing posts 12 and 12 for sliding with respect to 2 connects the guide members 13 and 13 to the housing posts 12 and 12 and slides. A plunger (driving device) 15 for causing the shaft box 11 to be detachably connected to the guide members 13 and 13 is a key (connecting mechanism).

The guide member 13 is provided with guide pieces 13a, 13a which are curved in an arc shape, while the housing post 12 is provided with the guide pieces 13a.
Guide piece 1 so that a and 13a can be slidably mounted
An arc-shaped guide groove 12 curved in the same shape as 3a
a and 12 a are provided by attaching guide keepers 16 and 16 to the outside of the housing post 12. The outer surface shape of the guide pieces 13a and the inner surface shape of the guide groove 12a are both formed along an imaginary concentric arc centered on the center 0 of intersection of the rolls, and the plunger 14 is operated. Thus, the guide member 13 rotates along the arcs, that is, in the horizontal plane about the intersection center point O, and slides in the rolling line direction.

Therefore, by sliding the guide members 12 provided on both ends of the roll 10 in opposite directions by the same amount, the roll 10 rotates about the center point O in the horizontal plane and the rolling line. And the rolls can be always crossed at the intersection center point O by inclining the upper and lower rolls in directions opposite to each other. It does not slip out.

According to the above structure, the upper and lower rolls can be crossed at a desired angle as in the conventional cross mill, and the center of intersection between the rolls is not displaced. It is possible to release the connection between the guide members 13 and 13 and the axle box 11 only by pulling out the keys 15 and 15, and it is possible to pull out the roll 10 together with the axle box 11 in the longitudinal direction by releasing the connection. is there. Therefore, the roll 10 can be easily removed from the housing and can be easily attached, and the roll exchanging work is extremely easy as compared with the conventional rolling mill in which the guide groove 3 has to be disassembled every time the roll is exchanged. It is possible to do.

In the above embodiment, the key 15 is adopted as the connecting mechanism for connecting the guide member 13 and the axle box 11, but the key 15 is limited as long as they can be easily attached and detached. For example, a connecting mechanism as shown in FIG. 2 may be adopted instead. In the structure shown in FIG. 2, a plurality of concavo-convex portions 11b and 13b capable of meshing with each other are formed on both the shaft box 11 and the guide member 13,
The shaft box 11 and the guide member 13 are connected by engaging with 13b. According to the connecting mechanism having such a structure, the thrust force applied to the roll 10 is dispersed and transmitted by the large number of concave and convex portions 13b of the guide member 13, which is advantageous in ensuring the strength of the bearing portion.

In the above embodiment, the guide groove 12a is formed by attaching the guide keeper 16 to the housing post 12, but as shown in FIG. 3, instead of attaching the guide keeper 16, the housing is replaced. The key 20 may be attached to the post 12, and the guide member 13 may be guided by the keys 20 and slid.

Further, in the above embodiment, the guide member 13
Plunger 1 as a driving device for sliding
However, other types of drive devices can be appropriately adopted as long as the guide member 13 can be slid in an arc shape, and the shape and size of each part can be arbitrarily changed.

[0015]

As described above, according to the present invention, the guide member that slides in an arc shape is attached to the housing post, and the axle box is attached to the housing post via the guide member. By setting the slide amount of the guide member by the drive device for sliding the guide member, the pair of rolls can be made to cross each other and the center point of the intersection can be prevented from being displaced. Since the roll and the axle box are detachably attached by the connecting mechanism, the roll can be easily attached to and detached from the guide member together with the axle box only by operating the connecting mechanism. The effect is that it can be easily performed, and further, a plurality of uneven portions formed on both the axle box and the guide member are mutually By employing the coupling mechanism of the type to be meshed with, since the thrust force of the roll is transmitted is dispersed is advantageous in terms of ensuring the strength of the bearing portion, there is an advantage that.

[Brief description of drawings]

FIG. 1 is a plan view showing a structure of a roll bearing portion in a rolling mill according to an embodiment of the present invention.

FIG. 2 is a plan view showing a structure of a roll bearing portion in a rolling mill according to another embodiment of the present invention.

FIG. 3 is a plan view showing a structure of a roll bearing portion in a rolling mill according to still another embodiment of the present invention.

FIG. 4 is a plan view showing an example of a conventional cross mill.

FIG. 5 is a plan view showing another example of a conventional cross mill.

[Explanation of symbols]

 10 Roll 11 Shaft Box 11b Concavo-convex Part (Coupling Mechanism) 12 Housing Post 13 Guide Member 13a Guide Piece 13b Concavo-convex Part (Coupling Mechanism) 14 Plunger (Drive Device) 15 Key (Coupling Mechanism) O Intersection Center Point.

Claims (3)

[Claims] 1. A rolling mill of a type in which a pair of rolls intersect each other by inclining the rolls in directions opposite to each other with respect to the sheet width direction of the rolled material, and a shaft for rotatably supporting the end portions of the rolls. The box is mounted on the housing post via a guide member that rotates along an imaginary arc centered on the intersection center point of the rolls and slides in the rolling line direction. A rolling mill which is slidably connected to a housing post, and an arc-shaped guide piece formed on the guide member is slidably mounted on the housing post. 2. The rolling mill according to claim 1, wherein the axle box is detachably attached to the guide member by a connecting mechanism. 3. The connecting mechanism comprises a plurality of concavo-convex portions which are formed on both the guide member and the shaft box and which are capable of transmitting the thrust force applied to the roll by meshing with each other. The rolling mill described in 2.