JPS6044119A - Sleeve shifting device of movable sleeve type rolling roll - Google Patents

Abstract

PURPOSE:To obtain a titled device that adjusts shifting of a sleeve freely and sets position of the sleeve surely and easily by thrusting the sleeve by the action of a piston of a bouble-acting oil pressure mechanism provided in a roll chock. CONSTITUTION:In a movable sleeve type rolling roll 1 in which an arbor 11 to which a sleeve 12 is fitted movably in axial direction is attached to a roll chock 2, a shifting device A that shifts the sleeve 12 is made up of an oil pressure cylinder 3 provided in a through hole 21 of the roll chock 2, a double-acting oil pressure cylinder mechanism consisting of a piston 4 that pushes the sleeve 12 in axial direction, and the first and second oil pressure systems 5, 6 connected to the first and second pressure chambers 50, 60 of a cylinder 3. In above-mentioned shifting device A, solenoid valves 52, 62 are controlled by a controller 7 according to a set value, and the piston 4 is moved forward and backward through the oil pressure systems 5, 6. Thus, the sleeve 12 is positioned, and at the same time, displayed on a display unit 71.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sleeve moving device for a rolling roll in a movable sleeve type rolling roll, which is configured to arbitrarily adjust the amount of movement of the sleeve.

When rolling strips, the thickness in the width direction of the strip should be made uniform.
As an effective means for controlling ffjυ, a variable crown roll is used that makes the amount of crown of the roll variable. Variable crown rolls are made by tightly fitting a sleeve into the arbor that forms the roll body, and expanding the central part of the sleeve using hydraulic pressure to make the amount of crown variable.Generally, both ends of the sleeve are attached to the arbor. It is crimped and fixed by shrink fitting. However, even though the amount of crown can be changed, the position of the crown is always at a constant position, so it is difficult to delicately control such things as esodidronobuffs and shoulders that occur during rolling. Therefore, multiple rolling rolls with different sleeve positions are prepared. Modifications were made in response to various cases.

In order to deal with such inconveniences, a movable sleeve configured so that the sleeve is not fixed to the arbor and can be moved in the axial direction is disclosed in Japanese Patent Laid-Open Nos. 51-103058 and 1987-55, filed by the present applicant. No. 68106. However, in these conventional techniques, the structure of the sleeve moving mechanism is not specified, or the structure is complicated and difficult to implement, so that they are not necessarily sufficient as an implementation means.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to overcome the inconveniences in the conventional means, and to facilitate the movement and positioning of the sleeve, and to make it possible to display the amount of movement to ensure correction and setting of the sleeve position. The object of the present invention is to provide a sleeve moving device that can move the sleeve.

As shown in FIG. 1, the configuration of the rolling roll 1 includes a sleeve 12 movable in the axial direction on the outer circumference of the arbor 11.
are integrally fitted together, and when a pressure medium is supplied to the pressure chamber 13 airtightly formed between the arbor 11 and the sleeve 12, the central part of the sleeve 12 expands to form a crown. being done. Both end shaft portions of the arbor 11 are rotatably supported by roll chocks 2.

The sleeve moving device A of the present invention is a type of cylindrical structure device embedded in the roll chock 2, and includes:
They are provided facing inward to engage with the end surface of the sleeve 12, and, as shown in FIG. 2, are provided at equal intervals at, for example, four positions surrounding the arbor support shaft. These moving devices A are provided with exactly the same symmetrical structure on the left and right roll chocks, and each device has the same structure, so the basic structure of one of them is specifically explained in Figure 3. Don't explain.

The moving device includes a cylinder part 31, a rear washer 32, and a front inner cylinder 3.
3 and a pressure-welding member 41 at the tip.
The main part is a biston hole 4 with a protrusion extending outward, and is embedded and fixed in a through hole 21 provided in the chock 2.

Two pressure chambers are formed between the cylinder 3 and the piston 4. That is, a first pressure chamber 50 is formed between the rear end surface 42 of the piston 4 and the front end surface 32J of the rear washer 32 of the cylinder 3, and the first hydraulic pressure supply system 5 is connected thereto. Further, a second
A pressure chamber 60 is formed therein, and a second hydraulic pressure supply system 6 is connected thereto.

In these hydraulic systems 5 and 6, the straight pipe portions 5 and 61 inserted into the chock 2 are both double pipes consisting of an inner pipe and an outer pipe. The straight pipe section 51 of the first hydraulic system 5 is in a fixed state, but the straight pipe section 61 of the second hydraulic system 6
Since the supply tip is fixed to the piston 4, it is structured so that it can slide inside the through hole 21 together with the piston 4.

The flow rate of the first hydraulic system 5 is adjusted by a solenoid valve 52 provided within the circuit, and the flow rate of the second hydraulic system 6 is adjusted 1Z by a solenoid valve 62 provided within the circuit. These solenoid valves 52, 62 are

Also controlled by the control device 73. The control device 7 is provided with a moving part for the sleeve 12, and the solenoid valves 52 and 62 are automatically operated by operating the instruction button. The amount of movement at that time is displayed digitally on the display 71.

The control operation by the control device 7 is common to all the moving devices provided at the four locations of the chock 20, and the same operation is given to the four pistons 4 on one side. However, in the chock on the opposite side, the piston 4 is kept in a neutral state.

The basic configuration of the moving device is as shown in FIG. 3, but in the present invention, a position detector 8 as shown in FIG. 4 is provided for at least one of the four moving devices. It is preferable to provide one.

This position detector 8 is a known movement amount detection device that combines a movable magnetic head 81 and a fixed magnetic rod 82, and is a known movement amount detection device that combines a movable magnetic head 81 and a fixed magnetic rod 82. The magnetic head 8] is fixed to the screw, and by moving this straight pipe part 61, the screw!・Slides the same distance as 74. The amount of movement is generated as a pulse signal, sent to the control device 7 through a lead wire 83, converted into a pulse, and displayed on the display 71. At the same time, an error occurs between the displayed value and the set value. In this case, each hydraulic system's solenoid valve 52.
Command the control operation to 62.

Next, the operation of the device of the present invention will be explained. sleeve 1
2 at a predetermined position, a numerical value of the amount of movement is set in the control device 7, and an instruction button (not shown) is operated to command each hydraulic system to operate.

When giving the piston 4 a protruding motion (movement to the left in FIG. 4), the solenoid valve 52 of the first hydraulic system 5 is operated, and the inside of the first pressure chamber 50 is pressurized through the straight pipe portion 51. be pressured. As a result, the biston 4 protrudes forward as indicated by the dotted line arrow, and the press member 41 pushes the sleeve 12 by a predetermined distance. When the piston 4 moves, the straight pipe part 61 of the second hydraulic system 6 also moves at the same time, so the magnetic head 81 fixed to the straight pipe part 61 follows the movement of the piston 4 and moves the same distance in the same direction. Moving.

As a result, the magnetic head 81 slides on the magnetic rod 82, and the pulse signal generated at that time is returned to the control device 7. The control device 7 displays the detected value on the display 71, simultaneously calculates the error from the set value, and instructs the solenoid valve 52 or 62 to operate. When giving the piston 4 a backward movement (movement to the right in FIG. 4), the second hydraulic system 6 is operated to supply fluid into the second pressure chamber 60, and at the same time supply fluid into the first pressure chamber. Drain the fluid from within 50. As a result, the rear portion of the piston 74 is pushed in the direction indicated by the solid line arrow, and the piston 4 is moved backward.

The above-mentioned operations are all performed simultaneously on the four pistons on one side (for example, the left side), and the four pistons installed in the chocks on the opposite side (for example, the right side) are moved in relation to the movement of the left piston. Since it is set neutral for operation, the sleeve 12 can be clamped at four points on each side and moved to the desired position in the arbor. Sleeve 12
When the positioning is completed, all the bistons 4 are retracted and the rolling operation is started.

Thus, according to the device of the present invention, the sleeve can be moved easily and accurately.

In addition, the hydraulic supply piping system is designed so that the chock side piping and the fixed piping outside the machine can be connected and disconnected using a one-touch type hydraulic hose, and the line 1 of the position detector 8 can also be connected with one touch. Since a type connection method is used, when replacing the rolls, the rolls can be easily replaced by attaching and detaching the connecting portions.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional view of a movable sleeve type mill roll support mechanism equipped with a sleeve moving device according to the present invention. Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1. FIG. 3 is a partial cross-sectional view illustrating the structure of an embodiment of the sleeve moving device according to the present invention. FIG. 4 is an explanatory diagram similar to FIG. 3 but with a position detector. 1: i′iT dynamic sleeve type rolling roll 2: Roll chock 3 Niji cylinder 4: Piston 5: First hydraulic system 6: Second hydraulic system 7: Control device 8: Position detector (foreign name)

Claims (2)

[Claims] (1) In a device that adjusts and moves the sleeve of a movable sleeve type rolling roll in the direction of the coal axis, the amount of protrusion is adjusted to a predetermined position around the arbor holding part of the roll chock and to a position that can engage the end surface of the sleeve. A freely provided piston for pushing the sleeve, a double-acting hydraulic cylinder mechanism for each cylinder actuation provided in the roll chock in relation to the piston, and a pressure setting value control and pressure value display on each side. the plurality of cylinder machines in a roll chock;
A movable sleeve-type rolling roll sleeve moving device comprising a hydraulic system that simultaneously operates the movable sleeve-type rolling rolls. (2) A position detector that detects the amount of movement of the piston by magnetic measurement is attached to one of the pistons, and the detected value is returned to the hydraulic system control device to correct the accuracy of the set value. An apparatus according to claim 1, characterized in that the apparatus comprises: