JPS583708A - Roll bender device for rollig mill - Google Patents

Abstract

PURPOSE:To enalbe an automation and shorten the roll replacing time by moving intermediate rolls along intermediate bodies to eliminate the need for a detaching of a hydraulic oil feeding pipe at the time of roll replacing, by providing the intermediate bodies between roll chocks of the intermediate rolls and a roll bender. CONSTITUTION:An intermedite roll bender 5 is provided to the inside of a project block 2 to transmit a force of the bender 5 to intermediate roll chocks 4 and intermeidate rolls 3 through intermediate bodies 8. Accordingly the rolls 3 move along the bodies 8 at the time of roll replacing, and the position of the bender 5 is kept always constant. Therefore the need for a detaching of a hydraulic oil feeding pipe at the time of roll replacing is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll bender device for a JO rolling mill.

An example of a conventional device of this type is an intermediate roll knot type six-fold rolling mill, in which the intermediate rolls were not provided with a bender device. However, in recent years, work rolls have been made smaller in diameter in order to improve rolled material products, and this reduction in diameter has led to public safety concerns about installing a bender device (hereinafter referred to as a bender) on the intermediate roll. In such a bender, the bender must be equipped so that the load acts on the center of the roll bearing (in the case of multiple bender, the resultant force is the center of the bearing), and the bearings and rolls must be shifted in the axial direction. Therefore, a method has been considered in which a bender is embedded in the intermediate roll chock so that force can always be applied to the center of the bearing.

FIGS. 1 and 2 are schematic diagrams of a conventional roll bender device for a rolling mill in which a bender is embedded in an intermediate chock. A pair of work rolls 1 are disposed facing each other in the central part of the housing, and their bearings are supported within a project block 2. Intermediate rolls 3 are arranged above and below the work roll 1, and the bearing portion of the intermediate roll 3 is supported by an intermediate chock 4. An intermediate roll bender 5 is provided in this intermediate chock 4, and furthermore, an intermediate chock 4 and an intermediate roll 3 are provided in this intermediate chock 4.
A shift device [16] is attached to shift the gear in the axial direction.

Further, a back unroll 7 is provided on the upper F of the intermediate roll 3. The intermediate roll bender 5 requires hydraulic pressure for operation, and intermediate roll bender hydraulic piping (not shown) for supplying this hydraulic pressure is provided at each intermediate chock. For this reason, in a pressure g machine with such a configuration, when replacing the intermediate rolls, it is necessary to remove the oil supply hydraulic piping for the intermediate roll bender.
Making automation difficult and reducing reorganization time? It had the disadvantage of being long.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to provide a roll bender device for a rolling mill that eliminates the need to remove the oil supply hydraulic system for the intermediate roll bender when changing the intermediate rolls, and has an automated fully 0T function.

According to the present invention, the above object is achieved by providing an intermediate body between the bender and the intermediate chock, and by applying an external force to the intermediate chock through the intermediate body, the bender changes the position of the bender in relation to the axial movement of the intermediate roll. This is achieved by making it unrelated and constant.

Embodiments of the present invention will be described below with reference to the drawings.

3 and 4 are diagrams showing a first embodiment of a roll bender device for a rolling mill according to the present invention.

However, similar or identical components to those in FIGS. 1 and 2 are indicated using the same reference numerals.

The bearings of the pair of work rolls 1 are supported by a project block 2 attached to a rolling mill, and an intermediate roll bender 5 is installed in this project block 2. This intermediate roll bender 5 supports a rail-shaped intermediate body 8, and this intermediate body 8 is in contact with the intermediate chock 4. An intermediate roll shift group #6 is attached to the intermediate chock 4, and backup rolls 7 are arranged above and below the intermediate roll 3 whose bearing portion is supported by the intermediate chock 4.

Next, the operation of this embodiment will be explained. The force transmission of the intermediate roll bender 5 is at the y point of the arrow in the figure. The intermediate roll bender 5 pushes the intermediate body 8, and this intermediate body 8 pushes the intermediate chock 4, bending the intermediate chock 41d f [ji crawl. Further, when changing the rolls, the intermediate roll 3 is structured to move along the intermediate body 8 in the direction of the arrow axis.

According to this embodiment, the intermediate roll bender 5 is provided in the project block 2, and the force of the intermediate roll bender 5 is transmitted to the intermediate chock 4 and the intermediate roll 3 via the intermediate body 8. Roll 3 is intermediate 8
, and one position of the intermediate roll bender 5 is always constant.

This has the effect of eliminating the need to remove the intermediate roll bender oil supply hydraulic pipe (not shown) when changing rolls. Therefore, it is possible to shorten the time for changing rolls, and there is also the effect of eliminating manual work and enabling automation.

Further, since the intermediate roll 3 is not embedded in the crawler 5t and the intermediate chock 4, there is an effect that the intermediate roll 3 can be easily maintained.

FIG. 5 is a diagram showing a second embodiment of the roll bender device for a rolling mill according to the present invention. However, parts corresponding to those in FIG. 4 must be indicated using the same reference numerals.

This embodiment is characterized in that a block-shaped intermediate body 8 is provided between the intermediate roll bender 5 and the intermediate chock 4 provided in the project block 2, and the same effect as in the first embodiment can be obtained.

FIG. 6 is a diagram showing a third embodiment of the roll bender device for a rolling mill according to the present invention, and parts corresponding to those in FIG. 4 are designated by the same reference numerals.

The feature of this embodiment is that the intermediate body 8 is supported by a plurality of intermediate roll benders 5, and furthermore, the intermediate body 8 is divided into a drive side and an operation side. This embodiment also has the same effects as the first embodiment.

FIG. 7 is a diagram showing a fourth embodiment of the roll bender device for a rolling mill according to the present invention, and parts corresponding to those in FIG. 3 are designated by the same reference numerals.

In this embodiment, a defrozen pender 9 is attached to the intermediate roll 3.
I will show you an example of how to use the defreeze vendor-9.
is provided in the back chock 10 supporting the bank up roll 7e.

This defrozen bender 9 is also configured to apply force to the intermediate step 4 via the intermediate body 8, and the other configuration is the same as that shown in FIG. 3, and has the same effect.

FIG. 8 is a diagram showing a fifth embodiment of the roll bender for a rolling mill according to the present invention, and parts corresponding to those in FIG. 3 are designated by the same reference numerals.

This embodiment shows an example of a pressing machine in which the intermediate roll 3 is held in the back chock 10, and the intermediate roll bender 5 is provided in an extension of the back chock 10, and similarly The configuration is such that force is applied to the intermediate chock 4 via the intermediate body 8, and a similar effect can be obtained. In addition, although the above explanation has been given using an intermediate roll shift type heavy rolling mill as an example, the present invention does not involve intermediate roll shift.

As is clear from the above description, according to the present invention, an intermediate body is provided between the intermediate roll bender and the intermediate chock, and the force of the intermediate roll bender is imparted to the intermediate chock via the intermediate body r. Eliminates the need to remove the oil supply hydraulic piping for the intermediate roll bender when changing rolls, resulting in automation.
It is possible to provide a roll bender device for a rolling mill that has the following functions.

[Brief explanation of drawings]

Fig. 1 is a schematic main view showing the structure of a conventional roll bender/goo device for a rolling mill, Fig. 2 is a schematic side view of Fig. 11, and Fig. 3 is a schematic side view of the roll bender device for a rolling mill according to the present invention. A schematic front view showing the first embodiment, FIG. 4 is a schematic side view of FIG. 3,
FIG. 5 is a schematic side view showing a second embodiment of the roll bender device for a rolling mill according to the present invention, and FIG. 6 is a schematic side view showing a third embodiment of the roll bender device for a rolling mill according to the present invention. 7 is a schematic front view showing a fourth embodiment of the roll bender device for a rolling mill according to the present invention, and FIG. 8 is a schematic front view showing a fifth embodiment of the roll bender device for a rolling mill according to the present invention. It is a schematic front view. l... Work roll, 2... Project block, 3... Intermediate roll, 4... Intermediate chock, 5...
・Intermediate roll bender, 6...1' lift device, 7...
・Backup roll, 8... Intermediate, 9... Decrease vendor 1st (2) Figure 2 Figure 30 Figure 4 Kudzu 5 Figure 6 Figure 7 Ω Kudzu 8 times

Claims (1)

[Claims] 1. A roll bender device for a rolling mill that applies bending force to rolling rolls that can be shifted in the axial and radial directions,
For a rolling mill, characterized in that an intermediate body is provided between a roll chock supporting the rolling rolls and a roll bender, and the force of the roll bender is transferred to the roll chock via the intermediate body to apply bending force to the rolling rolls. Roll bender equipment. 2. The rolling roll and roll chock move along the intermediate body when shifting in the axial direction, and the roll bender remains in a predetermined position with respect to this axial movement. The roll bender device for a rolling mill according to item 1. 3. A patent claim characterized in that an intermediate body is provided between an intermediate chock that supports an intermediate roll of an intermediate roll force heavy rolling mill and an intermediate roll pengure provided in a project block that supports a work roll. A roll bender device for a rolling mill according to item 1.