JPS60115316A - Roll moving device - Google Patents

Abstract

PURPOSE:To make a titled device compact and low in its cost, and also to move a bearing case smoothly by providing two parallel link mechanisms so that a direction of a force for moving a roll becomes parallel to the moving direction. CONSTITUTION:Both sides of a plate 11 for moving a bearing case 3 containing a roll 1 in the longitudinal direction of the roll 1 are attached to a link 14 and a link 15 by a pin 13. Also, the link 14 and the link 15 are supported by a support 22 at the opposite side of the pin 13 so that the link 14 and the link 15 become parallel. Moreover, the support 22 is held by a bracket 16 fixed to a housing 2. Also, one end of the link 14 and 15 is connected to a cylinder 17, and the cylinder 17 is held by the bracket 16 with a pin 18. Accordingly, the bearing case 3 is moved by expansion and contraction of the cylinder 17.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a device for moving a roll bearing box for a rolling mill in the longitudinal direction of the roll.

[Background of the invention]

A conventional device will be explained based on FIGS. 1 to 3. FIG. 1 is a cross-sectional view of a general roll and bearing box of a rolling mill, viewed from directly above, and the device shown in FIG. 2 is installed at the location shown in section .

The link 5 rotates around a support 6, and one end (1) thereof is connected to a cylinder 8 held by a bracket 7, and the other end is in contact with the collar of the bearing box 3. Further, the support column 6 is supported by a bracket 7 fixed to the housing 2.

A keeper plate 9 for holding the bearing box 3 is attached to the link 5. The keeper plate is connected to the cylinder 10 by a pin 23, and the cylinder is held to the link 5 by a pin 24. ing. Also, a piece 26 held by a pin 25 is attached to the collar of the bearing box 3.
is attached, and the piece 26 is in contact with the link 5 and the keeper plate 9.

In this device, when moving the roll 1 and the bearing boxes 3 and 4 in the longitudinal direction of the rolls, by expanding and contracting the cylinder 8, the link 5 and the keeper plate 9 are moved.
The bearing box and the rolls were moved by rotating around the support column 6 and pushing and pulling the top 26 held in the bearing box 3 by the link 5 and one end of the keeper plate 9. The two-dot chain line in FIG. 2 shows the moving state of the device.

(2) Also, when changing rolls, that is, roll 1 and bearing box 3,
4 out of the housing 2, the cylinder 10
After retracting the keeper plate 9, the roll was pulled out of the housing.

In such a device, the link 5 is connected to the inner width of the housing, that is, the bearing boxes 3 and 4, so as not to interfere with roll change.
It must be placed outside the sliding part between the For this reason, the flange of the bearing must also be placed outside the inner width of the housing, and the bearing box 3 itself has a complicated shape and is large. Furthermore, the roll changing device on which these rolls 1 and bearing boxes 3, 4 are placed has also become large and expensive. Furthermore, since the link 5 and the keeper plate 9 draw an arc around the note post 6, it was necessary to attach a pin 25, a piece 26, etc. to the collar of the bearing box 3, which is the contact area with these. . For this reason, the bearing box self-help becomes large, making it difficult to install it in cases where space is limited, such as in small rolling mills.

(3) [Object of the Invention] An object of the present invention is to provide a roll shift device that is compact, inexpensive, and allows smooth movement of the bearing box.

[Summary of the invention]

The gist of the present invention is that two parallel link mechanisms are provided, and the direction of the force that attempts to move the roll is in the longitudinal direction of the roll,
That is, the roll moving device of the rolling mill is arranged parallel to the moving direction.

[Embodiments of the invention]

Next, the present invention will be explained based on FIG. 1 and FIGS. 4 to 6.

FIG. 1 is a cross-sectional view of the general arrangement of rolls and bearing boxes of a rolling mill, viewed from directly above, and the apparatus of the present invention shown in FIG. 4 is installed at the location shown in part .

Pins 1 are attached to both sides of the plate 11 to which the keeper plate 12 for moving the bearing box 3 in the longitudinal direction of the roll 1 is attached.
3, it is attached to the link 14 and the link 15. Further, the links 14 and 15 are supported by a support 22 on the opposite side of the pin 13 so that (4) the links 14 and 15 are parallel to each other. Further, the support column 22 is held by a bracket 16 fixed to the housing 2. Further, one ends of the links 14 and 15 are connected to a cylinder 17, which is held on a bracket 16 by a pin 18. Keeper plate 12 is connected to cylinder 20 by pin 19, and cylinder 20 is held to plate 11 by pin 21.

That is, the keeper plate 12, which is partially housed in the groove of the bearing box 3, uses the parallel link mechanism of the links 14 and 15 to expand and contract the cylinder 17, so that the keeper plate 12 moves in the longitudinal direction of the roll 1 with the support 22 as the fulcrum. In other words, the movement is parallel to the direction of movement. Further, when changing the rolls, the keeper plate 12 is moved back from the groove of the bearing box 3 by the cylinder 20, and the roll 1 is pulled out of the housing 2.

In such a device, when the roll 1 is moved in the longitudinal direction of the roll, a portion of the cylinder 17 is accommodated in the groove of the bearing box 3 by expansion and contraction (5). The parallel links move parallel to the longitudinal direction of the roll 1, and smoothly move the bearing box 3. Also, when changing the rolls, that is, when pulling out the mouth 1 and the bearing box 3.4 out of the housing 2, the keeper plate 12 is moved by the cylinder 20.
After retreating from the groove of the bearing box 3, the roll is pulled out of the housing. With this structure, there is no need for a part of the bearing box to be outside the inner width of the housing as in the conventional system, and there is an effect that the bearing box can be made more compact.

〔Effect of the invention〕

According to the present invention, the bearing box can be moved smoothly and can be made compact and inexpensive. Furthermore, the roll changing device used when changing rolls is also made smaller as well as the bearing box is made more compact.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a typical roll and bearing box of a rolling mill.
FIG. 2 is a side view of the conventional device installed in the part ``■'' in FIG. 1, FIG. 3 is a view taken along the arrow ``■-■'' in FIG. Figure 1 is a side view of the device installed in section ■ (6), and Figure 5 is section ■ (6) in Figure 4.
6 is a sectional view taken along VI-Vl in FIG. 4. ■... Roll, 2... Housing, 3... Bearing box, 11... Plate, 12... Keeper plate, 14° 15... Link, 17... Cylinder, 2
0...Cylinder, 22...Strut. Agent Patent Attorney Akio Takahashi (7)

Claims (1)

[Claims] 1. In a rolling mill, a plate for moving a bearing box housing a roll in the longitudinal direction of the roll is connected to a parallel link having one side as a fulcrum; A roll moving device characterized in that the bearing box is moved by expansion and contraction of a cylinder connected to a part of the parallel link.