JPS5855106A - Multistage cluster rolling mill - Google Patents

Abstract

PURPOSE:To provide a titled rolling mill which is so constructed as to permit easy and safe changing of work rolls and intermediate rolls by providing wheels in the end parts of metallic chocks for work rolls and intermediate rolls and making the same travelable on rails provided on a housing side. CONSTITUTION:In multistage cluster rolling mills disposed with a pair of upper, lower work rolls 2, respectively two pieces of a set of upper and lower intermediate rolls 3, plural pieces of backup rolls 4, etc. vertically symmetrically, wheels 17, 16 are provided in the end parts on the front and rear in the rolling direction of metallic chocks 8 for the rolls 2 and metallic chocks 7 for the rolls 3 which support the rolls 2 and the rolls 3 respectively rotatably. On the other hand, rails 19, 18 which are attachable and detachable to and from said wheels 17, 16 are provided on the housing 10 side of the rolling mills to make the wheels travelable thereon. In the stage of changing the rolls, the rolls 2 and the rolls 3 are carried in and out safely and easily at a right angle to the rolling direction independently or simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a multi-stage cluster rolling mill, which allows work rolls and intermediate rolls to be easily rearranged.

In recent years, in rolling mills, there has been a demand for high-reduction rolling mills that can reduce Ki/ItlIlt- by a large amount in one rolling operation from the viewpoint of energy saving while improving productivity. A multi-stage cluster type rolling mill makes this possible.

The schematic structure of this multi-stage cluster rolling mill is shown in Figure 111. In the figure, reference numeral 1 indicates a rolling material that is rolled in the direction of the arrow. "2Fi is a pair of upper and lower work rolls, 3#f intermediate rolls are used, and a set of two upper and lower rolls each supports the work rail 2Th. 4 is a reinforcing roll, and the back of the intermediate roll 3 (
A plurality of them (in the illustrated example, three on each of the upper and lower sides) are provided to suppress and support the intermediate rail 3. Reference numeral 5 denotes a metal fitting for the reinforcing rail, which holds the bearing portion of the fixed shaft 5a. Reference numeral 6 denotes a support frame for the metal chock 5, which is a metal chock for the 7ti intermediate rail, and holds two intermediate rolls 3 each on the upper and lower sides.

A metal chock for an 8#i work roll, a 9Fi rolling down device, and 10 a housing for the rolling mill. In addition, a hydraulic cylinder is used to apply a pending force to the 11 work roll 2, a hydraulic cylinder 12.13 is used to apply a pending force to the intermediate row J-3, and a hydraulic cylinder is used to lift the metal chock 5 for the 14#i reinforcing roll. It is a hydraulic cylinder.

In order to reassemble the work keel 2, intermediate row ILIB, etc. in such a multi-stage cluster rolling mill, it is necessary to take out a large number of rolls, but in conventional small multi-stage cluster rolling mills, each roll is (relatively lightweight), and much of the reassembly work was done manually.

However, recently, multi-stage cluster presses have become larger, and with this, the size and weight of each roll has also increased, making it difficult to reassemble the rolls manually as in the past.
The work requires a lot of time, and the work cannot be done easily and in a short time, resulting in low work efficiency.This leads to long downtime, lower productivity, and is dangerous work. There are drawbacks such as.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-stage cluster rolling mill which eliminates such conventional drawbacks and enables easy and safe rearrangement of work keels and intermediate rolls. The configuration of the present invention that achieves all of these objects is such that a pair of upper and lower work rolls, a pair of upper and lower intermediate rolls each supporting the work rolls, and a plurality of reinforcing rolls that suppress and support the intermediate rolls are arranged on the upper and lower sides. In a symmetrically arranged multi-stage cluster rolling mill, metal chocks for rotatably supporting the work roll and the intermediate roll are provided at both ends of each of the work roll and the intermediate roll.
Wheels capable of transporting the work rule and the intermediate roll in the axial direction either singly or simultaneously are provided at the front and rear ends of the rolling mill, while rails capable of coming into contact with and separating from the wheels are provided on the housing side of the rolling mill. is characterized by nine things.

Hereinafter, details of an embodiment of the present invention will be explained based on the drawings. I will clarify.

FIG. 2 is an exploded front view showing the roll arrangement of the multi-stage cluster rolling mill, and FIG. 3 is a side view of the main parts of the multi-stage cluster rolling mill of the present invention.

In the drawings, parts that are the same as those in the prior art are designated by the same numbers, and redundant explanations will be omitted.

2, the reinforcing roll 4 is divided into a plurality of pieces in the axial direction of the fixed shaft 5a, and each reinforcing roll 4 is divided into a plurality of pieces in the axial direction of the fixed shaft 5a.
The bearing is mounted eccentrically with respect to the axis of the fixed shaft 5a through an eccentric ring 15t, and by rotating the eccentric shaft 15 by an adjustment device (not shown), the work roll of each reinforcing roll 4 is adjusted. By independently adjusting the amount of displacement in two directions, the intermediate roll 3 is moved to 1@, and the work roll 2 that is in contact with this through the intermediate roll 3 is moved to Il! ! The structure is such that the crown can be adjusted at the same time.

On the other hand, as shown in FIG. 3, metal chocks 7 are provided at both ends of each of the upper and lower intermediate rolls 30 via bearings. A wheel 16 is attached to the end of the intermediate roll 3t, so that the intermediate roll 3t can be carried in and out in the axial direction. Furthermore, metal chocks 8 are provided at both ends of the pair of upper and lower work rolls 20 via bearings, and wheels 17 are attached to the front and rear ends of the metal chocks 8 in the rolling direction, that is, the left and right ends in FIG. ,
The work roll 2 can be carried in and out in the axial direction. The housing 10 of the rolling mill has wheels 16 and 17.
Wheels 16 and 17 are mounted on the seats 318 and 19 at least when each roll 2 and 3 is loaded and unloaded.

In this way, the intermediate roll 3 and the work roll 2 are supported on each of the metal chocks 7.8, while the wheels 16° 17'l are attached to the metal chocks 7.8 so that they can move toward and away from the rails 18.19. Since the rollers can be run on top of the rolls, when changing the rolls, the intermediate roll J4I3 and the work roll 2 can be carried in and out individually, and the intermediate roll 3 and the work roll J2ft can also be carried in and out at the same time. Therefore, when loading and unloading the four-wheel, the wheels run on the rails, resulting in a lack of stability, especially when the weight of the four-wheel increases as multi-stage cluster rolling mills become larger. In addition, reassembly work can be easily performed and the rolls will not be damaged. 9. By installing a drive device for the hydraulic cylinder in the electric motor and its control device f on the wheels 16 and 17, it is possible to automate the work of loading and unloading the rolls, and the work time can be shortened. KmllI is not required, and the work can be performed safely, easily, and quickly. Therefore, it is possible to save labor in the reshuffling work and to perform roll reshuffling with high efficiency.

[Brief explanation of the drawing]

No.iw! Figure 2 is a side view showing the schematic structure of the JFi multi-stage cluster rolling mill;
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing the main parts of an embodiment of a multi-stage cluster rolling mill of the present invention. In the wJ surface, 1 is the abrasive material, 2 is the #'i work roll, 3 is the intermediate roll, 4 is the reinforcing roll, 5 is the metal chip of the reinforcing roll, 5a is the fixed shaft, 6 is the support frame, 7 is the metal chip of the intermediate roll, 8 is the metal chilock of the workpiece wheel, 9 is the rolling device, 10 is the rolling mill's housing, 15 is the eccentric shaft, 16.17 is the wheel, and 18.19 is the rail. Patent applicant: Mitsubishi Heavy Industries, Ltd. Sub-agent, Attorney Shibe Mitsuishi (and one other person)

Claims (1)

[Claims] A multi-stage structure in which a pair of upper and lower work wheels, a pair of upper and lower intermediate rolls each supporting the same work meal, and a plurality of reinforcing rolls that suppress and support the intermediate rolls are arranged vertically symmetrically. In the cluster rolling mill, metal chocks for rotatably supporting the work piece and the intermediate roll are provided at both ends of each of the work pieces and the intermediate roll, and each of the metal chocks is rolled. Wheels are provided at the front and rear ends of the rolling mill so that the workpiece anchor and the intermediate roll can be carried in and out in the axial direction, either singly or simultaneously, and a wheel that can move into and out of contact with the wheels is provided on one side of the rolling mill. It is equipped with nine multi-stage cluster rolling mills.