JPS59120302A - Method and device for rolling - Google Patents

Abstract

PURPOSE:To make the abrasion in the longitudinal direction of work rolls uniform in the stage of rolling a rolled plate having the width narrower than the length in the cylindrical part of the rolls by shifting the work rolls in the axial direction thereof. CONSTITUTION:A tapered sleeve 5 is moved to the roll end side so as to be fitted loosely in the case of rolling a rolled plate 8 having the width narrower than the width in the cylindrical part 3 of a backup roll 1. The part of the sleeve 5 in this state cannot transmit rolling down force and therefore the effective bending of work rolls 6, 7 is accomplished. The local wear of the rolls 6, 7 is prevented by shifting symmetrically the rolls 6, 7 from the above-mentioned state or shifting randomly the rolls 6, 7 in the same direction or only in one direction or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rolling method and apparatus using two detachable taper sleeve rolls. □In conventional general rolling mills, the work roll does not shift in the direction of the coal axis.As a result, when rolling the same strip width in succession, the work roll shifts as shown in Figure 1. (a)
However, when rolling a wide rolled plate, the step (b) will cause uneven thickness. Therefore, when rolling a wide rolled plate, it is necessary to replace the work roll (α) each time.
There are problems with frequent operations, stopping the rolling operation, and redoing the adjustment operation, resulting in the production of products with poor precision.

For this reason, in recent years, in general rolling mills, as shown in Fig. 2, the ten work rolls (e) (/') supported by the upper and lower bank-up rolls (c) and (d) are shifted symmetrically in the axial direction. ) has been developed. In this method, the center point of the rolling mill is set as the intersection point and the I-roll is shifted to the left and right, respectively, so that the thickness distribution of the rolled sheet (i) becomes symmetrical. However, when I shift, the work rolls (1) (7)
The contact length between the bank assobrosol (c) (d) and the bank asbrosol (c) is
7) Since (h) also changes, work 1-”-no I (e)
(The force bending curve also changes. Therefore, (II −
If you roll the roll 7 feet with a uniform polish,
At the same time, the shape (flatness) of the plate becomes disordered.

Therefore, it was necessary to change the 1-noise Ll-rupending force (46), which is a means of shape control, in accordance with the shift Ji. In other words, in order to equalize roll wear, a rolling mill that can roll 7 feet to a desired position independently of the shape of the plate was desired.

In general, the amount of wear on a roll differs between the top and bottom of the roll, and is particularly severe at the end of the roll where it is in contact with the rolling mill.

In order to deal with such roll wear, it is necessary to keep the upper and lower rolls (1) (1) in the 1-kun position rather than symmetrically, as shown in Figure 3. In the case of 4, when you do low A-f, c) / throat, the right 4h I'y also changes at the same time as the problem that the shape of [) is disturbed.

To deal with this, rt - / L - < n - door adjustment (1 (i) f left and right individually e - (it is necessary to turn, and the pressure device that adjusts the roll and Yayatsu at the same time)
】It is safe to change the setting value as well. It is actually possible to perform such a complicated operation, and in both cases of Figure 2 and Figure 6, it is possible to perform such a complicated operation. 1.
Since the contact position (j) of the I-ru (1) 1) end or the intermediate part in the length direction, uneven wear occurs on the Tsukuatsuzo roll (c) ((1)). I'm trying to figure out the problem.

The present invention has been developed in view of the above circumstances.--In rolling using a C1 removable rib,
By moving the roll in the axial direction (7) during rolling, the roll body 1 (S, l: narrow rolling plate stand: when rolling), the lengthwise VCS of the roll is・To uniformize and equalize wear and tear.

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

FIG. 4 schematically shows a rolling mill according to the present invention.
, the lower bank up roll (1) (2) Ii, has a body (3) having a uniform diameter and a required length in the central part in the axial direction [7, at both ends of the body (3) It has a trunk end (4) having a diameter smaller than the diameter of the trunk (3) and tapered toward the end, and a Taber sleeve (5) is attached to the trunk end (4). It has a deep sleeve roll structure that allows them to play and engage. - As mentioned above, it is possible to roll the rolled plate (8) via the upper and lower work rolls (6) and (7), and the upper and lower work rolls (6) and (7). Work roll (
6) Configuring (7) so that it can shift (9) in the axial direction.

No. 571 shows a detailed view 1 of the tapered sleeve (5), in which the body end portions (4) provided at both ends of the roll body (3) are shown in detail.
There is a hooking groove 0 at the boundary part (11) with the troll neck part (10).
engraved. The inner diameter edge of the neck part side of the Taber sleeve (5) has a two-step shape, and the inner surface of the small diameter step has internal teeth 0; Arc-shaped engagement teeth (14) are provided protrudingly at the equally divided positions. A split ring 0 is fitted into the engagement II groove 7, and when the ring 00 is embedded in the engagement groove 11, the key θ0 is turned 11.

External teeth 07+ that slidably engage with the internal teeth 0 [phase] are carved on the outer surface of the end of the split ring 00 on the side of the cheap IJ-b, and screws 08 are formed on the outer surface of the end of the neck portion. ) is engraved. (19 is the cylinder case, and the boundary part (11
) and is screwed onto ring 0■. A cylinder oil chamber α) which is open to the deep sleeve (5) side is bored in the cylinder case 0 [phase], and the annular piston (21) is oil-tightly and slidably fitted into the cylinder oil chamber wall. Then, the cylinder oil chamber α is closed by the head cover (A) to form the cylinder ■◆.The tip of the piston (2]) has the same engaging teeth θ4) carved in the taper sleeve (5). 1 protruding tooth ■ that can pass between the engaging teeth (14) with a bisona, and the engagement + * 04) k passed state f 4
1) Can the tapered sleeve (5) and the piston move together in the axial direction if they can be separated? ↓I will be able to do it. In this way, without appropriately supplying pressure oil to the oil chambers (20c) (20b) partitioned by the piston/gll, the taper sleeve (5) is moved in the axial direction and the barrel end (4) is moved. and the tapered sleeve (5) to create a loose and engaged state. In the figure, ψ indicates the cover.
, play) indicates oil 7-le.

Figure 6 shows the equipment for lifting the above-mentioned -hi1ζwa-crawl (6) <7). 6) or (
7) is the first immortal box, and the axis box (g) handle is...Uzong ψ
) is fitted with a V that can freely slide in the axial direction of the work roll (6), so the work roll (6) can slide in the axial direction (I
It is freely supported. A pair of arms extending in the horizontal direction is provided on the one axle box (c),
Engagement holes 01) <(]) are drilled on the outside near the tips of the pairs of arms (l), respectively. The engagement hole CH1) <4
1) [is a pair of 1-drive units placed facing each other with the arm ridge (g) in between.
It is removably engaged at . In this way, - pairs of rivers 1.
jJil unit 0:u0:l'=su1-twirlO-,1shiku6)
package). ”: ta+Qf1t [; drive unino)
03 → 0■ is the power transmission shaft (C) to which the driving force is transmitted via the gear ＼ Honks＠ (7 and 4) The power of 3 is transferred to the cam follower via the worm wheel (4υ). (The force is converted into a rotating force, and the above-mentioned kat, huo "1a0's kat/groove Q3)" K n
↑ Since the outer ends of the levers (ζ>1) are fitted, when the lower part 02 of the lever (E) rotates, the lever (E)) (the lever rotates around the fulcrum (B)). Move 10, front 11 [:
Work roll (6) can now be moved in the direction of Tsukuda 1.

Dimensions 111J of the roll shift device are such that the body ends of the work rolls (6) and (7) coincide with the body ends (3) of the work rolls (1) and (2). Within the range of the position iθ, it is possible to shift the lower work rolls (6) and (7) symmetrically or in a symmetrical manner. ↓It looks like this.

Next, we will explain the effect of Figure 4.

Figure 4 shows that the shape control ability of the rolling mill can be varied in various ways by changing the lengths of the taper sleeves (5) provided in the upper hack-up [7-rule (1) and the docker amplifier F1-rule (2)]. That's what I do. In the figure, 0h means 1/2 rolling force, 0(
Shows the 9th pendeingka.

Figure 4 shows the body (3) of a doped pack amplifier [1-L0] which is integrally engaged with the tapered sleeve (5) or the L lower backup rolls (1) and (2), and whose length is at least known.
This shows a state in which a wider rolled plate is being rolled.

From this state, a rolled plate (8) narrower than the body (3) is formed.
When rolling, the tapered sleeve (5) is moved to the roll end side to loosely fit. In this state, the tapered sleeve (5) cannot transmit the rolling blade, so the work rolls (6) and (7) can be bent effectively.

Furthermore, from this state, as shown in FIG. 7, the upper and lower work rolls (6) - crawl (6) (7) ';
) (7) in the same direction′! By randomly shifting the work rolls (6) and (7), it is possible to prevent local wear of the work rolls (6) and (7). At this time, the position of the rolled plate (8) is adjusted so that its center in the width direction coincides with the center of the rolling mill, so that the center of the rolled plate (8) and the body of the backup rolls (1) and (2) are aligned. (3) The center always coincides with the center, and the back-up roll (1>(2) contact length g) (A) is always equal and constant. Therefore, even if a sudden shift is performed, the deformation of the workpieces (6) and (7) remains unchanged.Also, the entire length of the roll body (3) is always 6) (7) By shifting the workpiece roll (6) (7) within the range where it is in contact with the circumferential surface, the body (3) of the backup roll (]) (2)
) will not cause uneven wear.

In addition, Fig. 9 shows that the axle box that applies the penting force θ(i) to the workpiece "1-ru (6) (7) is
71 It is made movable with respect to K, and the pendant roller is made to act at a fixed position from the center of the rolling mill.
Fig. 10 shows the case where the work a-le (6) (
7) This shows the case where the left and right pending force 0 (9) is adjusted according to the distance 07 (c) with the axle box fixed to VC.

Further, the present invention is not limited to the embodiment 1/C described above, but is applicable to intermediates other than the backup roll.
It goes without saying that even if a tapered sleeve is provided at one end, the same effect can be achieved, and that various changes can be made without departing from the gist of the present invention.

According to the above-described rolling method and equipment of the present invention, the following excellent effects can be achieved.

(1) Work rolls can be worn uniformly in the lengthwise direction, increasing the number of rolls per roll.
The original 11th place in the roll falls.

(1) The frequency of rearranging work rolls is reduced, improving productivity.

(iii) The number of work rolls to be polished is reduced, increasing the productivity of the roll shop.

(1v) The number of work rolls in stock can be reduced.

(v) Uneven wear due to hack-and-roll can be prevented.

(vi) The bending operation is easy even if the work rolls are moved randomly, and the shape of the rolled plate is easy to control.

[Brief explanation of the drawing]

(11) Figure 1 is an explanatory diagram of uneven wear on work rolls, and Figures 2 and 3 are explanations of the case in which the work rolls are completely rolled in a conventional general rolling mill. Fig. 4 is an explanatory diagram without showing the outline of the present invention, Fig. 5 is a cross-sectional view showing details of the device IJ section, and Fig. 6 is a diagram showing the details of the roll/gutter device.
The diagrams illustrating examples, FIGS. 7 and 8, are 41.・
Figures 9 and 10 show the axle box picking force formula for applying a Ben 7-ing force to the workpiece ``L''. There is a theory that shows Shikoku-C. (1) (2+ is hack up C1, -, -le, (3)
indicates the trunk, (5) indicates the deep sleeve, (6) and (7) indicate the workpiece []-No. 1, and c extension indicates the LJ-Rusino (device. Figure 10

Claims (1)

[Claims] 1) When rolling using a rolling mill in which a removable tapered sleeve is arranged on a bank-up roll or an intermediate roll,
When the Taber sleeve is removed [7. If the width of the work roll is narrower than the body length of the Cheapas IJ-Broll, move it to the body end of the roll, or if the width is wider than the body length, move the work roll to the body end of the roll. A rolling method characterized in that the wear of the work roll in the longitudinal direction is made uniform by shifting the VC in the axial direction to an arbitrary position. 2) A rolling device equipped with a back-up roll having a removable Taber sleeve, a work roll back-amplified by the bank-up roll, and a shift device capable of moving the work roll in the axial direction. . 6) an intermediate roll having a removable Taber sleeve;
A rolling apparatus characterized in that the intermediate roll is provided with a work roll bank-amplified and a shift device capable of moving the work roll in the axial direction.