JPH06292919A - Guide device for rolling mill - Google Patents

Abstract

PURPOSE:To simply carry out the adjustment of the interval of a guide part in a short time. CONSTITUTION:A guide device 3 is equipped with an upper and a lower guide parts 9 and 10 guiding a rolling stock from both the upper side and the lower side, which are arranged on the inlet side or the outlet side of a rolling mill 1, and a left and a right guide parts 29 and 30 guiding the rolling stock from both sides of the left and the right. And vertical driving devices 11 and 12 moving vertical guide parts 9 and 10 in the vertical direction, horizontal driving device 31 moving horizontal guide parts 29 and 30 in the horizontal direction, and a control device 53 automatically operating the vertical and the horizontal driving devices 11, 12 and 31 so that an interval between the vertical guide parts 9 and 10 and an interval between the horizontal guide parts 29 and 30 become specific values according to a predetermined pass schedule, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device which is arranged on the inlet side and the outlet side of a rolling mill and guides a rolled material.

[0002]

2. Description of the Related Art As a guide device for a rolling mill, for example, one described in Japanese Utility Model Publication No. 62-13684 is known. This conventional guide device includes upper and lower guide portions that guide the rolled material from both upper and lower sides, and left and right guide portions that guide the rolled material from both left and right sides. The distance between the upper and lower guide portions and the distance between the left and right guide portions are adjustable, and these distances are adjusted to match the thickness and width of the rolled material.

The space between the guides has been manually adjusted manually.

[0004]

In the strip rolling and the like, the dimension of the rolled material is different for each pass (rolling frequency). Therefore, the interval between the upper and lower guide parts and the interval between the left and right guide parts are manually adjusted each time. This required a great deal of adjustment time. Further, in the case of reciprocating (reverse) rolling, the outlet and inlet guides are alternately replaced, and the dimension of the rolled material changes for each pass, so that it is impossible to manually adjust the spacing between the guide portions.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a guide device for a rolling mill, which can easily adjust the gap between the guide portions in a short time.

[0006]

In order to achieve the above object, the present invention has taken the following means. That is, the feature of the present invention as set forth in claim 1 is that it is arranged on the inlet side or the outlet side of the rolling mill and guides the rolled material from both upper and lower sides, and guides the rolled material from both left and right sides. In a guide device provided with a left and right guide part, a vertical drive device for moving the vertical guide part in the vertical direction, a left and right drive device for moving the left and right guide parts in the horizontal direction, and according to a predetermined pass schedule, A control device for automatically operating the vertical and horizontal driving devices is provided so that the distance between the upper and lower guide portions and the distance between the left and right guide portions have predetermined values.

In addition to the structure of the invention according to claim 1, the invention according to claim 2 further comprises a front-rear drive device for moving the respective upper and lower guide parts and the left and right guide parts in the front-rear direction, and The control device is also configured to automatically adjust the gap between the roll of the rolling mill and the tips of the upper, lower, left, and right guide portions.

[0008]

According to the first aspect of the present invention, the path schedule is previously input to the control device. That is, the interval data of the upper and lower and left and right guide portions for each pass is input. Since the control device controls the vertical and horizontal drive devices for each pass based on this data, the intervals between the vertical and horizontal guide parts are automatically adjusted for each pass.

Further, in the invention of claim 2, the gap between the tip of each guide portion and the roll of the rolling mill is automatically adjusted.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4 show a rolling line in which the horizontal rolling mills 1 and the vertical rolling mills 2 are alternately arranged in tandem. This rolling line is capable of reciprocating (reverse) rolling. The horizontal rolling mill guide device 3 is arranged on the inlet side and the outgoing side of each horizontal rolling mill 1, and the vertical rolling mill guide device 4 is arranged on the inlet side and the outgoing side of each vertical rolling mill 2. And
Pinch roller device 5 between each horizontal and vertical rolling mill 1,2
Are arranged.

In the case of reverse rolling, the inlet side and the outlet side of the rolling mills 1 and 2 change depending on the traveling direction of the rolled material, but the guide devices 3 and 4 have the same structure on the inlet side and the outlet side. The guide device 3 for the horizontal rolling mill and the guide device 4 for the vertical rolling mill differ in the shape of each guide device, but their operations and functions are the same, so the guide device 3 for the horizontal rolling mill will be described in detail below. To do.

In FIGS. 1 and 2, the guide device 3 has a base 6 provided on the side of the stand of the rolling mill 1. A pair of left and right guide rails 7 are provided above the base 6 in parallel with the pass line. A frame device 8 is mounted on the guide rail 7 so as to be movable along the pass line. As shown in FIG. 1, the frame device 8 is provided with an upper guide portion 9 and a lower guide portion 10 for guiding the rolled material from above and below. Further, the frame device 8 includes an upper drive device 11 for moving the upper guide portion 9 in the vertical direction.
And a lower drive device 12 for moving the lower guide portion 10 in the vertical direction.
Is provided.

The upper guide portion 9 includes an upper fund 13 which is vertically movable with respect to the frame device 8, and an upper fund.
A pair of front and rear upper rollers (14) rotatably supported by (13) is provided. The upper fund 13 has a pair of front and rear screw shafts 15 projecting upward. The upper drive device 11 is rotatably supported by the frame device 8 so as to be screwed onto the screw shaft 15 and is rotatably supported by the frame device 8, and is rotatably supported by the frame device 8 so as to be screwed with the worm wheel 16. The worm shaft 17, a bevel gear 18 provided at the tip of the worm shaft 17, and a motor 19 provided in the frame device 8 for driving the bevel gear 18.

When the motor 19 is operated, its rotational power is transmitted to the bevel gear 18 → the worm shaft 17 → the worm wheel 16 to raise / lower the screw shaft 15. By moving the screw shaft 15 up and down, the upper fund 13 and the upper roller 14 move up and down. A hydraulic cylinder 20 provided in the frame device 8 is coupled to a central portion between the pair of front and rear screw shafts 15 of the upper fund 13. The hydraulic cylinder 20 constantly biases the upper fund 13 upward so as to balance with the rolling force of the screw shaft 15.

The lower guide portion 10 includes a lower fund 21 that is vertically movable with respect to the frame device 8, and the lower fund.
It has a pair of front and rear lower rollers 22 rotatably supported by 21. A pair of front and rear screw shafts 23 project downward from the lower fund 21. The lower drive device 12 is rotatably supported by the frame device 8 so as to be screwed onto the screw shaft 23 and is rotatably supported by the frame device 8, and is rotatably supported by the frame device 8 so as to be screwed with the worm wheel 24. The worm shaft 25, a bevel gear 26 provided at the tip of the worm shaft 25, and a motor 27 provided in the frame device 8 for driving the bevel gear 26.

By operating the motor 27, the rotational power thereof is transmitted to the bevel gear 26 → the worm shaft 25 → the worm wheel 24, and the screw shaft 23 is moved up and down. As the screw shaft 23 moves up and down, the lower fund 21 and the lower roller 22 move up and down. A hydraulic cylinder 28 provided in the frame device 8 is connected to a central portion between the pair of front and rear screw shafts 23 of the lower fund 21. The hydraulic cylinder 28 constantly urges the lower fund 21 downward so as to balance with the rolling force of the screw shaft 23.

The vertical drive units 11 and 12 can be independently driven individually. As shown in FIG. 2, the frame device 8 includes a right guide part 29 and a left guide part 30 for guiding the rolled material in the left-right direction, and a left-right drive device for moving the left-right guide parts 29, 30 toward and away from each other in the left-right direction. 31 and are provided. The right guide portion 29 has a right guide 32 provided on the frame device 8 so as to be movable in the left-right direction, and a right roller (not shown) rotatably supported by the right guide 32. The left guide portion 30 has a left guide 33 provided on the frame device 8 so as to be movable in the left-right direction, and a left roller 34 (see FIG. 4) rotatably supported by the left guide 33.

The left and right drive device 31 is composed of a pair of front and rear racks 35, 36 movably provided in the left and right directions, and both racks 35, 36.
A pinion 37 that simultaneously meshes with the vertical axis 38 that drives the pinion 37, a worm wheel 39 provided at the lower end of the vertical axis 38, a worm shaft 40 that meshes with the worm wheel 39, and the worm shaft 40. And a motor 41 for driving the.

One of the pair of racks 35, 36 is
A right engaging portion 42 that engages with the lower portion of the right guide 32 is provided, and a left engaging portion that engages with the lower portion of the left guide 33 is provided on the other rack.
43 is provided. Then, by operating the motor 41, its power is transmitted to the worm shaft 40 → the worm wheel 39 → the vertical axis 38 → the pinion 37 → the racks 35, 36, and the front and rear racks 35, 36 have the same amount. Move left and right in opposite directions. By this movement, the left and right engaging portions 42, 43
Moves, and the left and right guides 32, 33 approach or separate from each other.

A front-rear drive unit 44 for moving the frame unit 8 is provided on the base 6. The front-rear drive device 44 includes a motor 45 fixed to the base 6, a horizontal horizontal shaft 46 in the left-right direction rotated by the motor 45, and a pair of left and right pinions 47 fixed to the horizontal shaft 46. Have. A pair of left and right racks 48 that mesh with the pinion 8 are provided at the bottom of the frame device 8. The motor
By operating 45, the frame device 8 moves in the front-back direction on the guide rail 7 by the rack 47 and the pinion 48.

The base 6 is provided with a fixing device 49 for fixing the frame device 8 to the base 6. The fixing device 49 has a pair of left and right clamp cylinders 50 provided on the base 6, and a wedge-shaped clamp 51 provided at the tip of the piston rod of the clamp cylinder 50. In addition, an inclined surface 52 that engages with the wedge-shaped clamp 51 in a detachable manner is formed in the lower portion of the frame device 8.

By operating the clamp cylinder 50 to project the clamp 51, the wedge-shaped clamp 51 and the inclined surface 52 are engaged with each other to fix the frame device 8 to the base 6. By retracting the clamp 51,
The engagement of 52 is released, and the frame device 8 becomes movable in the front-rear direction. Therefore, the front-rear drive device 44 is used for the frame device.
8 is moved in the front-back direction to adjust the gap between the tips of the hoods 13 and 21 and the rolling mill rolls.

Motors 19, 27, 41, 4 of the upper drive device 11, the lower drive device 12, the left-right drive device 31, and the front-back drive device 44, respectively.
Reference numeral 5 denotes a hydraulic motor or an electric motor, and a detector such as a pulse generator is attached to each motor, and the position of the moving portion can be detected by the detector. Each of the motors 19, 27, 41, 45, and various hydraulic cylinders 20, 28,
A control device 53 (see FIG. 3) for controlling driving means such as 50 is provided.

This control device 53, according to a predetermined pass schedule, the intervals between the upper and lower guide parts 9 and 10, the intervals between the left and right guide parts 29 and 30, and the rolling rolls and the respective guide parts 9, 10 ,. The upper, lower, left and right, and front and rear driving devices 11, 12, 31, 44 are adjusted so that the distance between the tip of 29, 30 is a predetermined value.
Is configured to operate automatically. The intervals between the guides are set by using the existing data by a computer of the control device 53 or the like, or by adjusting each time.

That is, according to a predetermined pass schedule, the clearance between the entrance / exit guides (upper and lower guide portions, left and right guide portions) linked to rolling conditions such as the rolling amount of the rolling mill is adjusted. The clearance data for each pass is stored in the computer of the control device 53, and the guide is automatically adjusted by selecting the pass schedule. Alternatively, the calculation can be performed and adjusted for each pass.

5 to 8 show specific examples of the adjusting method. That is, as shown in the flowchart of FIG.
Initial values are input to the control device 53. And
Based on the input data, “guide setting calculation”, “pass time calculation” and the like are performed. The calculation result is displayed on the screen. Then, rolling is executed according to the pass schedule obtained by the above calculation, and each guide is automatically adjusted based on the "guide setting calculation" for each pass.

That is, the set value of each guide is set as shown in Table 1. The symbols shown in Table 1 are shown in FIGS.
And the definitions shown in Formulas 1 to 3.

[0028]

[Table 1]

[0029]

[Equation 1]

[0030]

[Equation 2]

[0031]

[Equation 3]

According to the above-mentioned embodiment, it is possible to carry out an arbitrary product or modeling dimension (outgoing side dimension) from any rolling base material (inlet side dimension) without manual intervention. In addition, it can be systematically actuated and productivity is improved. Also, when the rolling line is started up or the pass schedule is changed, the guide adjustment can be easily performed and the operation can be started quickly.

Further, by measuring the size of the rolled material after rolling and correcting the data and instructions of the computer of the control device, it is possible to cope with changing conditions such as wear of the roll and wear of the guide, and to obtain an accurate gap. It becomes possible to set. still,
The present invention is not limited to the above embodiment.

[0034]

As described above, according to the present invention, the guide adjustment can be automatically performed without the manual work as in the prior art. Therefore, the distance between the guide portions can be easily adjusted in a short time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a main part of an embodiment of the present invention, which is parallel to a pass line.

FIG. 2 is a cross-sectional view showing a main part of an embodiment of the present invention and being orthogonal to a pass line.

FIG. 3 is a plan view of the overall arrangement showing an embodiment of the present invention.

FIG. 4 is a side view of the overall arrangement showing an embodiment of the present invention.

FIG. 5 is a flowchart showing guide setting calculation.

FIG. 6 is a diagram showing the relationship between the left and right vertical rolling rolls and the width dimension on the inlet side and the outlet side of the rolled material.

7 (1) is a cross-sectional view showing the dimensions of the rolled material on the inlet side and the gap between the guides, and FIG. 7 (2) is a sectional view showing the dimensions of the rolled material on the exit side and the gap between the guides.

FIG. 8 is a drawing showing a positional relationship between upper and lower rolling rolls, a rolled material, and a lower guide portion.

[Explanation of symbols]

 1 Rolling mill 2 Rolling mill 3 Guide device 4 Guide device 9 Upper guide part 10 Lower guide part 11 Upper drive device 12 Lower drive device 29 Right guide part 30 Left guide part 31 Left and right drive device 53 Control device

Claims (2)

[Claims] 1. Arranged on the inlet side or the outlet side of the rolling mill,
In a guide device including an upper and lower guide portion that guides a rolled material from both upper and lower sides, and a left and right guide portion that guides a rolled material from both left and right sides, a vertical drive device that moves the upper and lower guide portions in a vertical direction, and the left and right guides. A left and right driving device that moves the unit in the left and right direction, and automatically operates the up and down and left and right driving devices according to a predetermined pass schedule so that the distance between the upper and lower guide portions and the distance between the left and right guide portions become predetermined values. A guide device for a rolling mill, comprising: a control device. 2. Arranged on the inlet side or the outlet side of the rolling mill,
In a guide device including an upper and lower guide portion that guides a rolled material from both upper and lower sides, and a left and right guide portion that guides a rolled material from both left and right sides, a vertical drive device that moves the upper and lower guide portions in a vertical direction, and the left and right guides. A left-right driving device that moves the unit in the left-right direction, a front-back driving device that moves the upper-lower left-right guide unit in the front-back direction, an interval between the upper-lower guide unit, an interval between the left-right guide units, and a predetermined pass schedule, and And a controller for automatically operating each of the vertical, horizontal, and front and rear drive devices so that the distance between the roll of the rolling mill and the tips of the vertical and horizontal guide portions becomes a predetermined value. Guide device for rolling mill.