JPS5945008A - Rolling mill with crossed rolls - Google Patents

Abstract

PURPOSE:To make the horizontal movement of a slide base smooth in the stage of roll changing and the turning of rolls exact in a titled 4-high rolling mill by providing specifically a center roll contacting with both side faces of the slide base pressed to a lower cross beam. CONSTITUTION:A cross beam 17b which is driven by a hydraulic jack 13b driven in the operating stage of roll crossing contacts simultaneously with both of a backup roll chock 7b and a slide base 14, and the members 7b, 14 are integrally moved. The base 14 is made horizontally movable at a suitable gap between housings 8 by the above-mentioned movement, and a center roll 21 contacting with both side faces of the base 14 is provided as a guide in said movement at the line center of the rolling mill. A roll 21 is supported freely rotatably on a stationary base 22. The horizontal movement of the base 14 is made smoother in the stage of roll changing and the exact turning motion centering at the center of the roll in the longitudinal direction is made possible in the operating stage of roll crossing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a horizontal slide pace, L'! , I'IiI+ more smoothly, and the cross roll [[[4] can be moved exactly 11-1 times around the longitudinal center of the roll during the roll cross operation. [Revised] (Regarding.

In the conventional four-pronged cross-roll grinding machine shown in Fig. 1, ? A pair of upper and lower work rolls 2 A I 2 b (7) Both yRAi; J5t-
The upper and lower pair of backup rolls 3a and 3b that circumscribe the work rolls 2a and 2b are supported by the work roll chocks 6rL and 6b, while the upper and lower backup rolls 3a and 3b are supported by the backup roll chocks 7a and 7b, respectively.
This roll chock 7a is rotatably supported by
, 7b are formed in a lip groove-shaped copper shape, and the work roll chocks 6a, 6b are supported so as to be held in the lip mating portions at the tips thereof, and the outer walls of the backup roll chocks 7Q, 7b are connected to the housing 8 and 1. ;:1
It is installed inside the Howe Song 8 through the middle.

Mata, in order to perform roll bending on the work roll 2a12b, work roll chocks 6a, 6
b and backup roll chock 7^.

A roll bending device 5^ that extends vertically with work roll chocks 6a and 6b sandwiched between the roll bending device 7b and the work roll chocks 6a and 6b.

A hydraulic jack 13a for the roll cross presses a pair of upper and lower cross beams 17^, 17b in contact with both side walls of the backup roll chock 7a+7b to insert the roll neck.

13b is provided.

Furthermore, in order to provide a reduction blade, lt'lj [11 and 1+1! 217 Tsunoyahino, 16fL is installed at one end of the backup roll chock 7FL, and this part abuts! - Beam 1.6 A is provided with a rolling edge to the roll via the rolling screw 4 by the rolling down device 11 provided on the upper part of the housing 8), while the bottom beam 16b is also attached to the lower side 1 & 7 of the lower backup roll chock 7b. (located at the bottom of the housing 8)
[: Lower cylinder 10 side horn 4-beam 16a'
- It is configured to move downward and rotate.
Backup roll chock 7b and bottom beam 16b
)? A liner 15 for adjusting the ball line and a slide pace 14 are interposed, and the S slide pace 14 can be horizontally moved by the hydraulic jack 12, and the back-up low /l / chock 7 b e /4 line during roll cross operation. The structure is such that the adjustment liner 15 and the slide pace 14 can be moved horizontally at the same time (in the figure, 9 is the chute plate 1).
,).

However, due to the
(Wrong point i'1111 Quito, there is no guide for straight movement and turning when performing continuous turning firing 1 centered on the longitudinal center of the roll during roll cross operation, and the smoothness of these movements, The problem is that it lacks accuracy.

The present invention solves these problems, makes horizontal movement of the slide pace smoother when changing rolls, and enables accurate turning around the longitudinal center of the rolls during roll cross operation. The purpose of the present invention is to provide a cross-roll rolling mill that can be used for rolling, and its gist is to provide a pair of upper and lower work rolls that are rotatably supported at both ends by a pair of upper and lower work roll chocks and that clamp initial rolling abrasive material. A pair of pack-up roll chocks were formed in the shape of lip channel steel and supported so that the work roll chock was held in the tip corresponding to the lip. Both ends were supported freely in the same way. At the same time, a pair of upper and lower nozzles that touch the work roll are brought into contact with one of the former Rfl backup rolls. 1)
II Pack - 67 in the lower T of the T tube rolls,
lid, L.

Sura Idbars 11 Intermediate 1-2 J1 Puhibotono Bino, and ^11 Pack (Both mouths of the top roll jogging) The cross roll 1 located inside the housing is
1. '-Look, Crosby below! , the T-way pack-up y6.

-Both the ruby yock and the front 1112 slide base come into abutment and are rotatably supported on a fixed pace provided at the lower end of the front housing.)
Place the 7 storage compartments on the inside surface of the slide pace so that they are in the center of the 6th line. As an example, the cross roll pressure ρ (4) according to the present invention will be explained.
: 716; The same numbers are used for lbase t1, 1rl-7', i', and interest (tL explanation will be omitted.

Hon.) In Nishimei, voice 11 is made during the roll cross operation.
By the Aburayuki 0 jack 13b, the cross beam 17b is pressed into the pack, the angle chock 7b and the slide pace 14 at the same time, and these image parts 7b and 14 are moved 4+ as a unit 11 ．The shape and dimensions of the slide pace 14 are d(jitoj).
At the same time, an appropriate gap is provided between the slide base 14 and the housing 8 so that the slide base 14 can be moved.

In addition, the slide pace 14 moves to the horizontal body IIJ (as a guide for the 8th position, the center row 221 that comes into contact with both flil+ surfaces of the slide pace 14 extends to 1 (in the center of the line;, :S), and the center roller 21 is fixed - and one step is 2
2, the roller bracket 23 (te, butt 1i'
i big...ri1] in -Jξholding)1 't' to be there
! It has an i-sign and is 7.

t, tc, slide pace 14, p 2 figure ())
> (c) &te:11. Work (1'4)
11) Is there a bridge-like tag on both sides of the non-gang 8 and drive side housing? Circle it on the fixed sea pace 22
'l kτI: 'l' iura 1 will be buried and (this) 1. is actuated by button 24. ),
Backup iJ-Rudjodsk 7h and slide pace 1
A rocker plate 25 is interposed between the 1. The cross beam 171) which is rotated by the hydraulic jack 131) is connected to the backup roll chock 71) and the rocker plate 25.
and the slide pace 14, these parts move together and at the same time to force one roll cross to f']iF't, so these parts No relative slippage occurs during the month. Therefore, even if the movement during roll mutual support or roll cross operation is returned, the slide pace 14 can always stably and lightly perform its backward movement.
It is possible to easily determine the required cross angle H1 for circle i'.

As described above with reference to the embodiments shown in the drawings, according to the cross roll rolling mill according to the present invention, when the rolls are mutually supported, V? ：、Jr sliding pace horizontal body・l'
If ill is more circle ift IK-(it can be done, roll cross Jiil+ Roll 1 at time 6τ
- It becomes possible to perform a turning movement of 1 W# around the center in the hand direction.

[Brief explanation of the drawing]

Figure 1 shows 111. of the IIF cross roll rolling mill. The front view and FIG. 2 schematically show the structure of the cross-roll rolling mill according to the present invention (111'r approximately 1fIf structure of the cross-roll rolling mill).
(^) is the front view, (b) is one side, one side, one side, (((ri)
r, r ())). In the drawing, l is v (abrasive for i, 2^ and 2b are work rolls, 3n and 3b are backup rolls, 6a and 6b are work roll chocks, 7n and hv, t backup roll chocks, 8 is housing, Hydraulic jack for 13aTh and 13b roll cross,
14 is slide pace, 16 R#j, Atsunoya-beam, 16) + if', +I Tato
, 8 bino, , 17pA, 17b, 6 to 1 cross person, 21 is the center roller, 22 is the fixed pace. Patent applicant Mitsubishi Jr. Figure 2 cJ

Claims (1)

[Claims] A pair of upper and lower work rolls, both ends of which are rotatably supported by a pair of upper and lower work roll chocks, pinch the wave-rolled material, and a pair of upper and lower work rolls that are formed in the shape of lip channel steel, and the work roll chock is held in a portion corresponding to the lip at the tip of the work roll. a pair of upper and lower back-up roll chocks, each of which is rotatably supported by a pair of upper and lower back-up roll chocks, and a pair of upper and lower knock-up rolls that circumscribe the work roll; One beam and the lower downward pull 11 of the pack-up roll, f,=? , y+ with L slide pace interposed? ) In a cross roll rolling mill in which a N beam and a roll cross jack for pressing a pair of upper and lower cross beams in contact with both side walls of the pack-a-f roll chock are respectively disposed in a housing, the lower cross beam (1iiii) Abut against both the lower back-up roll yock and the front bar 1/sill base 19; A cross-roll rolling mill in which li'I'P means that both surfaces 11 and 11 of the slide pace are brought into contact with each other so as to be located at the center of the rolling mill line.