JP3591554B2 - Calibration device for sensor roll - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a shape detection device that detects a shape (flatness) from a tension distribution of a thin plate, and more particularly, to a sensor roll calibration device of the shape detection device.
[0002]
[Prior art]
In order to increase the shape accuracy (flatness) of a thin plate at the time of rolling, a shape detecting device that detects a tension distribution in a width direction of the thin plate has been conventionally used (for example, Japanese Utility Model Publication No. 3-11691, Japanese Utility Model Publication No. No. 11692, Japanese Patent Application No. 6-97206, etc.).
FIG. 5A is a vertical cross-sectional view of a sensor roll used in such a shape detection device, and FIG. 5B is a cross-sectional view taken along line AA. As shown in this figure, the sensor roll of the shape detection device includes a hollow shaft (arbor) 1, a rotor 2, a thrust ring 3, an air supply line 4, a pressure detection line 5, and the like. The rotor 2 is a ring-shaped air bearing that is levitated and supported by the arbor 1. The rotor 2 is provided with a radial air hole 1 a provided radially in the arbor 1 and a thrust air hole 3 a provided axially in the thrust ring 3. Levitates and spins with little resistance. In addition, as shown in FIG. 5B, during use, the rotor 2 receives a vertical load F due to the tension T of the thin plate 6 and is slightly eccentric, and the eccentricity causes the pressure between the arbor 1 and the rotor 2 to change. Is measured by the pressure detection line 5 and converted into an electric signal to convert the vertical load F acting on each rotor 2 and the distribution of the tension T is detected from this. In FIG. 5, reference numeral 4a denotes an air filter.
[0003]
[Problems to be solved by the invention]
As described above, since the sensor roll measures the tension T from a slight change in the supporting pressure of the rotor 2 supported by the air bearing, it is necessary to perform a precise calibration before use. Therefore, a calibration device as illustrated in FIG. 6 is conventionally used.
[0004]
FIG. 6 (A) shows a case in which the calibration weight 7a is hung downward by using the apparatus offline. In this device, the load is easily directed to the center direction due to the weight of the weight 7a, the reproducibility is high, and the workability is good. However, since the weight 7a is located below the rotor 2, it is installed in the device (shape detection device). (Online) cannot be used.
[0005]
On the other hand, FIGS. 6B and 6C can be used in a state of being incorporated in the apparatus (online). FIG. 6B shows a state in which a weight 7a having a known weight is placed on the rotor 2 and the front and rear ( The position is manually adjusted from the left and right sides in this figure), a level 7b is applied to the upper side of the weight 7a, and after confirming that it is mounted vertically, the electric signal is adjusted to a tension corresponding to a known weight (test load). are doing.
[0006]
FIG. 6 (C) is basically the same as FIG. 6 (B) except that a jig 7c for adjusting the verticality of the weight 7a is installed below the sensor roll, and the vertical adjustment is performed before and after the weight 7a. A rod 7d is provided, and the lower end of the adjustment rod 7d is brought into contact with the upper end of the jig 7c to confirm that the weight 7a is mounted vertically on the rotor 2.
[0007]
However, the conventional calibration device illustrated in FIG. 6 has the following problems.
{Circle around (1)} Since the calibration device of FIG. 6A cannot be used online, if the calibration device is installed online after zero adjustment in a yard outside the line, the error between the actual device (shape detection device) and the calibration device will be lost. Therefore, reproducibility is low and it is likely to be unstable.
[0008]
(2) In the calibration device shown in FIGS. 6B and 6C, since the weight is on the roll, it is unstable and the load direction hardly passes through the center, and the reproducibility is low. In addition, since all adjustments are performed manually, skill and concentration are required for the workers.
(3) In particular, the calibration device of FIG. 6 (C) measures in a state where the adjustment rod is in contact with the weight, so that the load is dispersed or the frictional force due to the contact acts, so that the measurement accuracy is likely to be reduced, and the reproducibility is high. Is low and easily unstable.
[0009]
{Circle around (4)} Further, in each of the devices shown in FIG. 6, when the center position of the weight is shifted from the center in the width direction of the rotor, an eccentric load acts on the rotor, and the error increases.
(5) An abnormality occurs for some reason during online use of the sensor roll, inspection of the sensor roll system, replacement / recalibration of the air / electric converter, and re-correction due to the difference between the set temperature drift and the operating temperature. Was performed offline each time, which hindered driving.
[0010]
The present invention has been made to solve such a problem. That is, the object of the present invention is to use the sensor roll incorporated in the shape detection device (on-line), to easily position the center position of the weight at the center position of the rotor in a short time. To provide a calibration device for a sensor roll, which can easily adjust the weight load so that the weight load passes vertically through the center of the rotor without requiring a load, has high reproducibility, and can maintain a constant test load without a disturbance load. It is in.
[0011]
[Means for Solving the Problems]
ADVANTAGE OF THE INVENTION According to this invention, the horizontal rail installed in the upper part along the axis of the sensor roll, the bogie supported by this horizontal rail, and movable along the said axis, and the weight suspended by this bogie The weight has four vertical surfaces surrounding a center line passing through its center of gravity G, and a lifting portion provided on the center line, and the bogie guides the four vertical surfaces vertically. A guide roller, a lifting device that engages with the lifting portion and raises and lowers the lifting device, and a lifting device that raises and lowers the lifting device.By the lowering of the lifting device, only the weight is placed on the rotor, and the lifting portion A calibration device for a sensor roll is provided, which is configured to be disengaged from a suspension fitting.
[0012]
According to the configuration of the present invention, all the components (horizontal rails, carts, and weights) can be arranged above the sensor roll, so that the sensor roll can be used with the sensor roll incorporated in the shape detection device (online). it can. In addition, by moving the bogie along the rail with the lifting unit raised by the lifting device, the weight can be easily moved while the center of gravity G of the weight is located on the axis of the sensor roll. Further, the four vertical planes surrounding the center line passing through the center of gravity G of the weight are vertically guided by guide rollers provided on the bogie, and the lifting part is lowered, so that the center position G of the weight becomes the center position of the rotor. C can be easily positioned in a short time. Therefore, the work load can be easily adjusted with good workability so that the weight load passes vertically through the center of the rotor without requiring skill and concentration. Further, only the weight is placed on the rotor due to the lowering of the lifting hardware, and the lifting portion and the lifting hardware are disengaged from each other, so that a disturbance load other than the weight does not act on the rotor and the test load is kept constant. It is possible to maintain high reproducibility with few errors.
[0013]
According to a preferred embodiment of the present invention, the horizontal rail includes a pair of vertical plates spaced apart along the axis of the sensor roll, and a horizontal through hole for positioning a bogie provided on the vertical plate. A plurality of the through-holes are provided in the horizontal direction at intervals equal to the rotor width B in the sensor roll axial direction, and further include a cylindrical positioning rod inserted into the through-holes. The positioning rod is positioned in the width direction such that the center of gravity G of the weight coincides with the center of width C of the rotor.
[0014]
According to this configuration, the width direction position of the bogie can be easily positioned only by changing the insertion position of the positioning rod.
According to another embodiment, a feed screw installed rotatably in parallel with the horizontal rail, and a feed screw nut screwed to the feed screw and attached to the bogie, the rotation of the feed screw The bogie is moved so that the center of gravity G of the weight coincides with the center of width C of the rotor. With this configuration, the width direction position of the bogie can be easily determined not only manually using, for example, a ball screw or the like as a feed screw, but also by remote control using, for example, a stepping motor.
[0015]
According to a preferred embodiment of the present invention, the horizontal rail includes a run-out preventing unit that guides the bogie along the axis of the sensor roll, and the run-out preventing unit includes a pair of horizontal spaced-aparts. It consists of a flanged flat rail and wheels guided by it. With this configuration, the carriage can be accurately moved along the axis of the sensor roll.
[0016]
The run-out preventing means comprises a horizontal V-shaped inverted V-shaped rail and a flat rail, and the bogie is guided along the axis of the sensor roll by the inverted V-shaped rail and wheels aligned with the rail. May be.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the drawings, common parts are denoted by the same reference numerals.
FIG. 1 is a front view of a calibration apparatus for a sensor roll according to the present invention, and FIG. 2 is a side view in which a part of FIG. 1 is cut. 1 and 2, a sensor roll calibration apparatus 10 of the present invention includes a horizontal rail 12 installed on the sensor roll along an axis Z thereof, and a horizontal rail 12 supported by the horizontal rail 12 and extending along the axis Z. And a weight 16 (weight) suspended from the carriage 14.
[0018]
The weight 16 has four vertical surfaces 16a and 16b surrounding a center line passing through the center of gravity G, and a lifting portion 17 provided on the center line passing through the center of gravity G. The cart 14 also includes guide rollers 15a and 15b for vertically guiding the four vertical surfaces 16a and 16b, a suspending member 18 which engages with and lifts the lifting portion 17 of the weight 16, and raises and lowers the lifting member 18. And an elevating device 19 for performing the operation. In this figure, the vertical surface 16a of the weight 16 is a vertical surface orthogonal to the axis Z of the sensor roll, and the vertical surface 16b is a vertical surface parallel to the axis Z. The guide rollers 15a and 15b are bearings having small resistance (for example, roller bearings), contact the four vertical surfaces 16a and 16b without play, and guide the lifting and lowering of the weight 16 vertically with little resistance. ing. The elevating device 19 is an air cylinder in which the rod does not rotate around the axis. In this figure, the weight 16 is divided into upper and lower parts, but the present invention is not limited to this, and the weight 16 may be integrated.
[0019]
Further, in the sensor roll calibration device 10 of the present invention, only the weight 16 is placed on the rotor 2 due to the lowering of the suspending bracket 18, and the engagement between the suspending portion 17 and the suspending bracket 18 is released. . During the lowering and raising and lowering, the vertical surfaces 16a and 16b of the weight 16 are vertically guided by the guide rollers 15a and 15b, and the state where the center of gravity G of the weight matches the axis Z of the rotor is maintained.
[0020]
As shown in FIGS. 1 and 2, the horizontal rail 12 includes a pair of vertical plates 13 spaced along the axis Z of the sensor roll. The vertical plate 13 is provided with a horizontal through hole 13a, and a plurality of the through holes 13a are provided in the horizontal direction at intervals equal to the axial width B of the rotor 2. Further, the sensor roll calibration device 10 of the present invention includes a pair of cylindrical positioning rods 20 inserted into the through holes 13 a of the horizontal rail 12. The diameter of the rod 20 is set to be slightly smaller than the inner diameter of the through hole 13a, so that the rod 20 can be smoothly inserted and removed, and there is almost no play. Further, the carriage 14 is provided with an abutment 14a (see FIG. 2) so as to abut on the rod 20 and position the carriage 14 in the width direction such that the center of gravity G of the weight matches the width center C of the rotor. Attached. With this configuration, the width direction position of the carriage 14 can be easily positioned such that the center of gravity G of the weight coincides with the width center C of the rotor only by changing the insertion position of the positioning rod 20.
[0021]
Further, as shown in FIG. 1, the horizontal rail 12 of the present invention comprises a pair of flat flanged rails 12a spaced apart in the horizontal direction, and the carriage 14 is moved by the flat flanged rails 12a to the axis Z of the sensor roll. You will be guided along. With this configuration, the carriage 14 can be accurately moved along the axis Z of the sensor roll.
[0022]
According to the above-described configuration, all the components (horizontal rail 12, carriage 14, and weight 16) can be arranged above the sensor roll, so that the sensor roll can be used in a state where the sensor roll is incorporated in the shape detection device (online). Can be. In addition, by moving the carriage 14 along the rail 12 with the lifting unit 17 raised by the lifting device 19, the weight 16 can be easily moved while the center of gravity G of the weight 16 is positioned on the axis Z of the sensor roll. Can be moved. Further, while lifting four vertical surfaces 16a, 16b surrounding a center line passing through the center of gravity G of the weight 16 vertically with guide rollers 15a, 15b provided on the carriage 14, the lifting part 17 is lowered, whereby the weight is lowered. The sixteen center-of-gravity positions G can be easily positioned at the center position C of the rotor 2 in a short time. Therefore, the work load can be easily adjusted with good workability so that the weight load passes vertically through the center of the rotor without requiring skill and concentration. Further, only the weight 16 is placed on the rotor 2 due to the lowering of the hanging member 18, and the lifting portion 17 and the hanging member 18 are disengaged from each other, so that a disturbance load other than the weight acts on the rotor 2. The test load can be kept constant without any error, and high reproducibility can be maintained with few errors.
[0023]
FIG. 3 is a side view similar to FIG. 2 showing a second embodiment of the present invention. In this figure, the sensor roll calibration device 10 of the present invention is further provided with a ball screw 22 installed parallel to the rail 12 and rotatable about an axis, and a ball screw screwed to the ball screw 22 and attached to the carriage 14. And an application nut 24. The ball screw 22 may be manually rotated as shown in the figure, for example, or may be remotely rotated using a stapling motor or the like. With this configuration, by moving the bogie so that the center of gravity G of the weight 16 coincides with the width center C of the rotor by rotation of the ball screw 22, not only manually but also by remote control using, for example, a stepping motor or the like. Therefore, the position of the carriage in the width direction can be easily determined.
[0024]
FIG. 4 is a partial front view showing the third embodiment of the present invention. In this figure, the rail 12 is composed of an inverted V-shaped rail 25 spaced apart in the horizontal direction and a flat rail (not shown). The carriage 14 has wheels having V-shaped recesses that are aligned with the inverted V-shaped rails 25, and the carriages 14 are guided by the inverted V-shaped rails 25 and the wheels along the axis Z of the sensor roll. ing. Also with this configuration, the carriage 14 can be accurately moved along the axis Z of the sensor roll.
[0025]
It should be noted that the present invention is not limited to the above-described embodiment, and can be variously changed without departing from the gist of the present invention.
[0026]
【The invention's effect】
The sensor roll calibration device of the present invention described above has the following advantages.
{Circle around (1)} Most of the conventional manual work is eliminated, the weight can be centered mechanically, the work efficiency can be improved, the work can be performed in-line, and the reproducibility can be improved.
(2) The reproducibility is improved and the workability is improved by the positioning rod for width adjustment, the lifting mechanism, and the weight holding mechanism using the bearing.
{Circle around (3)} Since the weight is guided by the bearing in four directions of the front and rear and the width direction, the test load direction can be maintained in a constant direction, and the resistance to disturbance can be reduced and a constant test load can be applied.
{Circle around (4)} By providing a positioning mechanism for width adjustment, the width can always be adjusted to a fixed position.
(5) Since this device can be used in-line, an abnormality occurs during operation of the line for some reason. Inspection of the sensor roll system, replacement / recalibration of the air / electric converter, set temperature drift and operating temperature. And the re-correction becomes unnecessary, and the operation stop time can be shortened.
[0027]
Therefore, the sensor roll calibration device of the present invention can be used in a state where the sensor roll is incorporated in the shape detection device (on-line), and the center position of the weight can be easily positioned at the center position of the rotor in a short time. Excellent effects such as easy workability adjustment so that the weight load passes vertically through the center of the rotor without requiring skill and concentration, high reproducibility, no disturbance load, and constant test load. Having.
[Brief description of the drawings]
FIG. 1 is a front view of a sensor roll calibration device according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a partial side view showing a second embodiment of the present invention.
FIG. 4 is a partial front view showing a third embodiment of the present invention.
FIG. 5 is a longitudinal sectional view of a sensor roll used in the shape detecting device and a sectional view taken along line AA of FIG.
FIG. 6 is a schematic diagram of a conventional calibration device.
[Explanation of symbols]
1 hollow shaft (arbor)
1a Radial air hole 2 Rotor 3 Thrust ring 3a Thrust air hole 4 Air supply line 5 Pressure detection line 6 Thin plate 7a Weight 7b Level 7c Jig 7d Adjustment rod 10 Sensor roll calibration device 12 Horizontal rail 12a Flat rail with flange 13 Vertical plate 13a Through hole 14 Cart 16 Weights 16a, 16b Vertical surface 17 Lifting part 18 Hanging bracket 19 Lifting device 20 Positioning rod 22 Ball screw 24 Ball screw nut 25 Reverse V-shaped rail C Rotor width center G Weight center of gravity Z Sensor roll Shaft center

Claims (4)

A horizontal rail installed on the upper part along the axis of the sensor roll, a carriage supported by the horizontal rail and movable along the axis, and a weight suspended from the carriage,
The weight has four vertical surfaces surrounding a center line passing through the center of gravity G, and a lifting portion provided on the center line. The bogie includes a guide roller for vertically guiding the four vertical surfaces, A lifting device that engages with the lifting portion to raise and lower the lifting device, and a lifting device that raises and lowers the lifting device,
A calibrating device for a sensor roll, characterized in that only the weights are placed on the rotor by the lowering of the suspending fittings, and the lifting section and the suspending fittings are disengaged. The horizontal rail has a pair of vertical plates spaced apart along the axis of the sensor roll, and a horizontal through hole for positioning a bogie provided on the vertical plate. A plurality of cylindrical positioning rods are provided in the horizontal direction at an interval equal to the rotor width B in the roll axis direction and further inserted into the through hole,
2. The sensor roll calibration device according to claim 1, wherein the bogie is positioned in the width direction by the positioning rod such that the center of gravity G of the weight matches the width center C of the rotor. 3. A feed screw installed rotatably in parallel with the horizontal rail, and a feed screw nut screwed to the feed screw and attached to the carriage; rotation of the feed screw causes the center of gravity G of the weight to move to the center of the rotor width; The calibration device for a sensor roll according to claim 1, wherein the carriage is moved so as to coincide with C. The horizontal rail includes a run-out preventing unit that guides the bogie along an axis of the sensor roll, and the run-out preventing unit is guided by a pair of flanged flat rails spaced apart in the horizontal direction. The calibration device for a sensor roll according to claim 1, comprising a wheel.

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