JPS60191612A - Rolling device - Google Patents

Abstract

PURPOSE:To improve the accuracy and yield of a rolling material by shifting work rolls and correcting the length of the contact part of the rolling material with the tapered parts of the work rolls. CONSTITUTION:When a rolling material 10 is passed through, the material 10 contacts with a vertical touch roll and roll holders 9 are moved to the transverse ends of the material 10 by the signal thereof to press both transverse ends under required force. When the material 10 moves in the transverse direction so as to hunt, the roll holders operate and the sensors detect the operation thereof, thus outputting detection signals to control devices 17, 18. Command signals are outputted from the devices 17, 18 to servocontrol valves 13, 14 and the pressure oil from a hydraulic pump 15 is fed via the valves 13, 14 to fluid pressure cylinders 11, 12. Work rolls 1, 2 are shifted in the axial line direction according to the rate of hunting so that the length L of the contact part at the transverse ends of the material 10 with the tapered parts of the rolls 1, 2 is maintained always at a prescribed size.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention allows the cross-sectional shape of the width end of the rolled material to be controlled to a desired state even when the rolled material is meandering! This relates to a 1-way extension device.

[Prior art]

When rolling is carried out using an ordinary four-high rolling mill, edge drops occur at the width ends of the rolled material, as shown in the cross-sectional profile of the rolled material in FIG. Therefore, in order to prevent the edge drop from occurring, a rolling mill as shown in FIG. 2 has recently been proposed.

In FIG. 2, 1 and 2 are rotatably supported by work roll shaft boxes 3 and 4, and are a pair of I:Iζ work rolls, 5, 6 is a back roll shaft box 7
．． 8 is rotatably supported and is used to back up the work roll 1.2, 9 is a single F screw, and a roll end is provided at the opposite end of the work roll 1.2. A tapered shape that tapers toward the side (sushi).

The 11 loaf rolling mill is made to match the width of the rolled material 10! Shift rolls 1 and 2 in opposite directions.

While applying an appropriate roll pending force to the work roll 1.2 as necessary, the center side of the rolled material 10 is moved to the work roll 1.
．． 2, one end of the inter-rolled material 10 in the width direction is connected to the tapered surface of the work roll 1 and the V flat surface of the work roll 2, and the curved end of the rolled material 10 in the width direction is connected to the flat surface of the work roll 1. Rolling is carried out on the surface of the work roll 2.

However, if rolling is carried out as described above, it is ideally possible to obtain a 'V flat plate with no edge drops, as shown in the cross-sectional profile of the rolled material in Figure 3 (a). Depending on the conditions, rolling iQ history may remain and ears may be formed at both ends of the rolled material, as shown in the cross-sectional profile of the rolled material in FIG. 3(b).

On the other hand, the rolling nail lO may meander at the entrance or exit side of the rolling mill.
The case where the rolled material 10 is not meandering is adjusted to the width of the JE rolled material 10 by binding JA Q" and shifted in the axial direction l\\, so even if the rolled material 10 that is meandering is rolled in this state, the cross section will not be the same. The shape cannot be made into the desired shape.

[Purpose of the invention]

The present invention is intended to optimize the cross-sectional shape of the rolled material by preventing edge drops from occurring at both ends of the IF rolled material or ears from forming at both ends of the rolled material even when the rolled material meanders. This was done for the purpose of

[Structure of the invention]

The present invention provides a tapered surface that tapers outward in the axial direction at the end of the work roll, and rolls the width end of the material to be rolled at a portion of the taper. In A16, the configuration includes a detector for detecting the width end position 14 of the rolled material and a device for shifting the work roll in the roll axis direction so that the width end position of the rolled material is at the desired position on the tapered surface of the work roll. It also has a configuration that includes a detector that detects the width end position of the rolled material and a device that adjusts the angle of the tapered surface of the work roll.

〔Example〕

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

4 to 6 show an embodiment of the present invention, and 11. in FIG.
12 is a hydraulic cylinder for shifting the work rolls 1 and 2 in the axial direction; 13.14 is a hydraulic cylinder 11;
, 12 is a servo valve that operates, 15 is a hydraulic pump,
16 is an electric motor for driving the hydraulic pump 15.

The control device f617.18 is capable of transmitting the signal detected by the meandering detection device 21, and also transmits the signal detected by the roll f position detector 19.20 provided at It is now possible to send. Open control device! From 17.18, servo valve 13
゜14'\Command number fri is output.

The roll position detectors 19 and 20 are for detecting the axial positions of the work rolls 1 and 2, and use, for example, a Macne scale or a differential transformer.

The details of the meandering detection device 21 will be explained with reference to FIG. 5 and FIG. The latter two screws 23
．． 24, and by rotating the screws 23 and 24, the O'+J side guide 22 is brought close to the phase 11 according to the width dimension of the rolled material 100 described in 011. The interval can be adjusted.

-1:2 At the required position on the side opposite to the rolling mill of each side guide 22,
A moving guide 25 is provided which is movable separately in the same direction as the moving direction of the side guide 22. A vertical touch roll 26 with a load cell or an accelerometer is provided so that its circumferential surface protrudes inward. Furthermore, the outside of each of the movable guides 25 in 1111]
A sensor such as a cylinder (=J) equipped with a sensor for adjusting the movement of the Ijf moving chikite in the width direction of the rolled material lO (=J) is provided at J, and the sensor (
A detection signal 28 can be output from the J-roll holding device 27.

During rolling, the work roll 1.2 is shifted in the axial direction by the hydraulic cylinder 11.12 so that a tapered part of the work roll 1 is located at the width end of the /E rolled material lO to be rolled. At the same time, a part of the taper of the work roll 2 is positioned at the other width end of the rolled material 10, and the rolled material 10 is passed through to perform rolling.

When the rolled material 10 is passed through, the IE rolled material 10 hits the vertical touch roll 26, and in response to the signal, the roll holding device 9 moves to the width end of the rolled material 10 and applies the required force to both width ends of the rolled material 10. When the rolled material 10 begins to move in the width direction, the roll holding device R27 is immediately moved.
is activated, the sensor detects it, and a detection signal 28 is outputted to the control device 17゜18'\ in Fig. 4. Is it a control device? From f17.18, lr: A command signal corresponding to the meandering amount of the rolled material lO is output to the servo 7N3.14, and the pressure oil from the hydraulic pump 15 is sent to the hydraulic cylinder 11°12 via the servo valve 13.14. The work roll 1.2 is shifted in the axial direction according to the amount of meandering so that the contact part of the width end of the rolled material 10 with a part of the work roll 1°2 taper is always in a predetermined one-way direction. .

From the roll position detectors 19 and 20, the work roll 1°2
The amount of shift in the axial direction is fed back to the control device 17-18, and when the contact size reaches a predetermined value, the servo valve 13.14 closes, and the hydraulic cylinder 11.1 closes.
The supply of pressure oil to 2 is interrupted.

In this way, even if the rolled material 10 is shifted in the width direction, the rolling work can be performed with the measurement of the contact part of the width end of the rolled material 10 against a part of the work roll 1.2 taper always kept at a predetermined dimension. I can do it. In addition, if an edge drop as shown in Figure 1 occurs in the rolled neck 10, the contact part scale should be made larger, and if an edge drop as shown in Figure 3 (mouth) occurs, the contact part scale should be made smaller. control so that

FIG. 7 shows another embodiment of the present invention, and in the embodiment shown in FIG. In this embodiment, the work rolls 1 and 2 are shifted so that the contact portion of the width end N of the rolled material 10 with respect to a part of the taper of the work rolls 1 and 2 becomes a predetermined dimension. Now work roll 1,
The angle θ of the tapered surface of No. 2 is controlled. In Fig. 7, 54 and 55 are rotary joints for the hydraulic pump 15.
Pressure oil from No.-bo valve 13.14, rotary joint 54, 5
5 into the f-rolling rolls 1 and 2 so that the angle θ of the tapered surface can be adjusted.

The details of the work roll equipped with a mechanism for adjusting the angle θ of the tapered surface will be explained with reference to FIG. 8. In the figure, 29 is a roll;
30, 3o are axle boxes, 31, 3i are bearings, 32, 3
2' is a bearing holding plate, 33, 3i are oil seals fitted to the bearing 1 upper brake 1-32, 32', and the roll 29 is constructed as described below.

The sleeve 35 is shrink-fitted to the outer periphery of the roll core 34, and the sleeve 35 constitutes the body of the roll 29. The part of the roll core body 34 corresponding to the sleeve end 36 has a stepped part 37 having a diameter smaller than that of the part fitted with the sleeve 35. The inner and outer circumferential surfaces of the sleeve bow <ii fslI 36 are finished to the required taper 1). The outer peripheral tapered surface of the taper is tapered toward the axle box 3011!1. Further, a ring spacer 38 is fitted in a circular space surrounded by the outer circumferential surface of the stepped portion 37 and the inner circumferential tapered surface of the one end portion 36 of the sleeve so as to be movable in the axial direction.

The outer peripheral surface of the ring spacer 38 is the sleeve-gHB portion 36
It is a tapered part that can engage with the inner circumferential tapered surface of the ring spacer 38.
A ring 11η is carved in i to fit the piston link 39, and a groove is carved in one end of the inner periphery opposite to the sleeve.
Fit the ring 40.

+1tJ The inner diameter of the portion of the one end portion 36 of the sleeve extending from the stepped portion 37 to the axle box 301111 is larger than the inner peripheral tapered surface, and a screw 41 is cut therein.

A neck m (43 has a seal ring 44
At the same time, the -p surface of the seal ring 44 is brought into contact with the stepped surface that forms the boundary between the inner circumferential tapered surface of the one end portion 36 of the sleeve 6iJ and the screw 41, and the gap between the seal link 44 and the neck portion 43 and the seal link are fitted. An O-ring 45 is interposed between the sleeve 44 and one end 36 of the sleeve. Therefore, the seal ring 44
is fixed with a ring nut 46 that is tightly fitted to the screw 41.

I'nl One end of the sleeve 36 fitted with the link ring spacer 38, is there a step? The space surrounded by the JI 37 and the seal ring 44 becomes oil-tight, and a first oil chamber 47 and a second oil chamber 48 are formed between the anti-shaft box 301111 of the ring spacer 38 and the seal link 44, respectively. In the aA oil chambers 47 and 48, oil passages 49 and 50 are curved, which are bored in the step portion 37 and the neck portion 43, respectively, and are connected to the hydraulic pump 15 shown in FIG.

In addition, in Fig. 8, the lower half /J) is the ring spacer 38.
is engaged with the inner circumferential tapered surface of the sleeve one end 36, that is, the ring spacer 38 is engaged with the inner circumferential tapered surface of the sleeve one end 36, that is, the ring spacer 38 is connected to the sleeve -A'a
It shows the state where it is inserted between part 3 and upper 6 and difference part 37, and 1'
This indicates that there is a slight gap with the inner circumferential tapered surface and that the fitted state is loose.

When pressure oil is supplied to the first oil chamber 47 in the 4-full roll described in , the ring spacer 38 moves toward the shaft 13011M, and the ring spacer 38 becomes in the loose state (1 in the figure).
When pressurized oil is supplied to the second oil chamber 48, the link spacer 38 moves to the anti-shaft box 3011!1 and the engagement shape f is heard (double half in the figure).

11i7 L, the above roll 29 is shown in ff17 diagram.
T: Used as work roll 1.2 of rolling mill, roll 29
The work roll is shifted in the roll axis direction so that the outer circumferential taper of the sleeve 35 and the required position Pfi coincide with the width end of the rolled material, and after adjusting the roll gap, Ir rolling is performed.

JE with a constant pressure of J91 is sent to the second oil chamber 48 according to the rolling conditions.
When oil is supplied, the link spacer 38 moves to the opposite shaft box 3o11.
11\Move to the pressure horn 11E;
Due to the rapid effect of the expansion 1, the angle θ of the tapered surface on the outer periphery of the sleeve end 36 changes (maximum depth is about 140μ), and the roll profile can be changed. Since the shape control ability is increased, even if one piece is formed at the end of the rolled material due to the rolling conditions, as shown in the cross-sectional profile of the rolled material in Figure 3 [mouth], this part will be rolled. As shown in Fig. 3 (b), it is possible to obtain a plate with a good cross-sectional shape f'7, and as a result, it is possible to control the crown at the width end of the rolled material in an optimal state. becomes.

When the rolled material 10 meanders, the kerol holding device 27 shown in FIG. 6 is activated immediately, and a sensor detects it.
The detection signal 28 is detected by the control device 17, 18/\,' in FIG.
l) J, i rel. A if
f, 17, 18 (1-) is C: A command signal corresponding to the meandering amount of the rolled material lO is output from the servo bob "J, 14.
JE oil from hydraulic pump 15 or servo JT'13.14
The first oil chamber 47 shown in FIG.
Or it is sent to the second oil chamber 48 (1), and one end of the sleeve f'il (1) is sent to the second oil chamber 48.
36 The tapered surface angle θ on the outer periphery is t! II will be adjusted.

For example, in FIG. 7, when the rolled material 10 meanders to the left (1), the second
Pressure oil is supplied to the oil chamber 48 to move the ring spacer 38 to the opposite axis V.
n301) II, and ring spacer 38 (7)
The first oil chamber 47 of the roll 29 constituting the work roll 2 is supplied with oil and the ring spacer 38 is pivoted by expanding the sleeve end 36 by a wedge effect.
\ to contract the sleeve end 36. This is F
) operation changes the tapered surface angle θ of the outer periphery of the sleeve end portion 36 of the roll 29, and the work roll 1,
2 taper i′! The depth h of the portion in contact with ++ can always be maintained at a desired state. Therefore, it is an nf function to constantly control the cross-sectional shape of the rolled material 10 well.

FIG. 9 shows another example of the roll used in the present invention. In this example, the angle of the tapered surface of the outer periphery of the sleeve end 36 is not changed due to the wedge effect of the link spacer 38, but is changed by hydraulic pressure. In the figure, 51 is an oil chamber configured to supply IE oil at a predetermined pressure, 52 is an oil passage, and 53 is an O-ring.Those with the same symbols as those shown in FIG. show.

Even with such a configuration, it is possible to optimally control the rake at the width end of the rolled material 1) the same as in the case of the roll described in II (1) even when the rolled material 1O meanders.

In the embodiments of the present invention, a case has been described in which a fluid pressure cylinder is used as a means for shifting the work roll, but it is also possible to use a screw or rack/binion, and the taper angle of the work roll can be changed. It goes without saying that the adjustment means may include a device that heats or cools the tapered surface, and that other changes may be made without departing from the gist of the present invention.

〔Effect of the invention〕

+According to the rolling device of the invention, even when the rolled material is meandering, the work roll can be shifted to correct the length of the contact portion of the rolled material with a part of the work roll taper, and the taper angle can be corrected. The crown at the width end of the material can be controlled to an optimal shape, and various excellent effects can be achieved, such as improving the accuracy of the rolled material and improving the yield.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the first fold profile of the rolled material when rolled with a normal 4-high rolling mill, and Figure 2 is the work roll A+
i+ all An explanatory diagram of a conventional rolling mill with a taper provided on the outer periphery, FIG. Fourth
The figure is an explanatory diagram of one embodiment of the rolling apparatus of the present invention, FIG. 5 is an explanatory diagram of a meandering detection device used in the rolling apparatus of the present invention, and FIG. The figure is an explanatory diagram of another embodiment of the rolling device of the present invention, FIG. 8 is an explanatory diagram of an example of a roll used in the rolling device of FIG. 7, and FIG. 9 is an explanatory diagram of an example of a roll used in the rolling device of FIG. 7. It is an explanatory view of another example of a roll. In the figure, 1 and 2 are work rolls, 10 is a rolled material, 11° and 12 are lh body pressure cylinders, 13 and 14 are servo valves, 17° and 18 are control devices, 19 and 20 are roll f8 position detectors,
21 is a snake♀j detection device, 27 is a sensor square roll holding device, 34 is a roll core, 35 is a sleeve, 38 is a Ringsbae, 47 is a first oil chamber, 48 is a second oil chamber, 49
, 50 is an oil passage, 51 is an oil chamber, and 52 is an oil passage. Special edition 19. rl Jinishiyojima JW 177 Heavy 1: Industrial Stock Meeting Figure 5 Procedures Amendment (Voluntary) 1. Indication of the incident 1982 Patent application No. 48326 2 Name of the invention Rolling device 3 Person who straightens sleeves Patent applicant 2-2-1 Otemachi, Chiyo H'1-ku, Tokyo (009) Ishikawajima Harima Heavy Industries Co., Ltd. 4 Agent 3-5-3 Uchikanda, Chiyoda-ku, Tokyo 5 Drawings to be amended Figure 4 of the drawing will be amended as shown in the attached sheet. 7. Catalog of documents (1) 1 copy of drawings

Claims (1)

[Claims] l) At the end of the work roll, point 1 toward the outside in the l1ll line direction.
In an apparatus that is provided with an all-round tapered surface and rolls the rolled material with the width end thereof aligned with the tapered surface,
A rolling device comprising: a detector for detecting the width end position of the rolled material; and a device for shifting the work roll in the roll axis direction so that the width end position of the rolled material is at a desired position on the tapered surface of the work roll. . 2) A tapered surface that tapers outward in the axial direction is provided at the end of the work roll, and a width end n of 11: I is provided on the tapered surface.
In a device designed to roll IS together, j3
E. A rolling device characterized by being provided with a detector for detecting the width end position of the rolled material and a device for adjusting the angle of the tapered surface of the work roll.