KR100940691B1 - Apparatus for automatic alignment of axis in build-up inspection system - Google Patents

Abstract

The present invention relates to an automatic shaft alignment device of a build-up measuring device of a steel sheet coil, and maintains a uniform profile in the width direction of the steel sheet in the process of winding the coated steel sheet in the form of a coil after the zinc plating process, which is the final process of the steel mill cold rolling process. It is an accessory of the so-called build-up measuring device that fails to convex a certain portion, and is to automatically adjust the axis alignment between the scan direction axis of the build-up measuring device and the rotation axis of the coil.

The present invention provides a measuring apparatus for measuring a buildup of a steel sheet coil, comprising: a moving plate; A measurement assembly mounted to the front surface of the moving plate and measuring a distance and a surface shape; First moving means for allowing the measuring assembly to move in a horizontal direction on the front surface of the moving plate; A pair of shaft members connected to the rear surface of the movable plate such that the movable plate is rotatable at an angle; And height adjusting means mounted vertically downwardly at one end of the moving plate, wherein the height adjusting means includes a drive motor and a screw shaft connected to the drive motor and erected in a vertical direction. Inserted into one side of the moving plate is moved up or down one side of the moving plate in accordance with its rotation to adjust the axial direction of the moving plate and the steel plate coil to be parallel to each other, the automatic shaft of the build-up measuring device of the steel plate coil Provide an alignment device.

Steel plate, coil, build up, measuring device, shaft alignment

Description

Apparatus for automatic alignment of axis in build-up inspection system}

1 is a schematic view showing a general galvanizing process.

2 is a view showing a build-up generation state of the plated steel coil.

3 is a perspective view showing a conventional build-up measurement method.

4 is a perspective view of a conventional build-up measuring apparatus.

5 is a perspective view of the automatic axis alignment device of the build-up measuring apparatus according to the present invention.

6 is an operational state diagram of the automatic axis alignment device of the build-up measuring apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

100: height adjusting means 101: screw shaft

102: drive motor 120: shaft member

122: moving plate 125: measuring assembly

128: conveying means 200: steel sheet

The present invention relates to an automatic shaft alignment device of the build-up measuring device of the gingham coil, and more particularly, in the width direction of the steel sheet in the process of winding the plated steel sheet in the form of a coil after the galvanizing process, which is the last step of the cold rolling mill. It is an accessory of the so-called build-up measuring device that does not maintain a profile and convex a certain part. It is to automatically adjust the axis alignment between the scan direction axis of the build-up measuring device and the rotational axis of the coil.

In the process of winding the coated steel sheet in the form of a coil after the galvanizing process, which is usually the last step of the cold rolling process, a so-called build-up is generated in which a certain portion is convex without maintaining a uniform profile in the width direction of the steel sheet. There is a problem with the reliability of the product.

1 is a schematic view showing a general galvanizing process, referring to FIG. 1, a general galvanizing process passes a strip passed through a heating furnace 6 facility through a galvanizing bath 3, and a galvanizing bath ( After the strip is cooled by the cooling device 5 installed at the top of 3), the process proceeds to the next step. As a final process, after winding up to the coil-shaped steel plate 8 by the winding machine 1 installation, it cut | disconnects with the cutter 2 only the required weight.

In addition to the required weight of the coiled steel sheet (8), the steel sheet (8) having various defects occurring in the galvanizing tank (3) equipment and defects occurring in all processes are cut by the cutter (2). Although the surface inspection of the coil-shaped steel sheet 8 wound up in the odor machine 1 facility is performed inside the inspection table, the inspection for the build-up 10 becomes impossible. When unwinding the coil-shaped steel sheet 8 in which the build-up occurred, there is a problem that the build-up is generated in a wave shape and the value as a product is lost.

FIG. 2 is an exemplary view illustrating a buildup of a plated steel coil, and an exemplary view of the buildup 10 generated when a steel sheet 2 that has undergone a steel mill plating process is wound in a coil form in a tension reel 1. to be. In Fig. 2, the build-up is a phenomenon in which a portion 5 of which the thickness of the steel sheet is thicker than the periphery in the longitudinal direction of the steel sheet is a certain length 4 or more, and the region is wound while being stacked in a coil shape. The cause of buildup can be divided into nonuniformity of plating thickness and nonuniform thickness of raw material steel plate. The buildup that occurs mainly is the widthwise edge of the steel plate and the middle area of the steel plate. However, since the generation area is gradually spread evenly, the entire width direction of the steel plate must be inspected to measure the buildup.

3 is a perspective view showing a conventional build-up measurement method, after the operator (7) to go directly to the site in order to thoroughly inspect the product to visually confirm the coiled steel sheet 8 is wound, the build-up ( When it is determined that 10) occurs, the degree of occurrence of the build-up 10 is confirmed by contacting the build-up 10 generating portion of the surface of the coil-shaped steel sheet 8 using the ruler 9. If it is determined that the buildup is severe and cannot be a product, it is cut using the cutter 2 and rewound.

However, in confirming the build-up occurrence state by the conventional build-up measurement method as described above, the winding machine equipment is in a state of continuous operation, so the risk of a safety accident is always present when the worker contacts the build-up occurrence site. Has existed. In order to solve this problem, a build-up measuring apparatus having a structure as shown in FIG. 4 has been proposed. (Patent application 2002-52076)

The apparatus of FIG. 4 comprises a stationary plate 21 and first moving means 27 moving in a direction substantially perpendicular to the stationary plate; A moving plate 22 moved by the first moving means; Second moving means (28) moving in the longitudinal direction of the moving plate; And a measuring assembly 25 which is moved by the second means of movement. The measuring assembly includes a distance measuring means, an edge detecting means and a steel plate surface shape measuring means, which detect and calculate the measured value by a main controller.

However, such a conventional build-up measuring device has been inconvenient to adjust the scan direction axis of the build-up measuring device and the axis of the winding coil, which is a process of the manufacturing line, especially when the shaft misalignment occurs during operation There was a problem such as having to stop the whole.

The present invention is to solve the above problems, an automatic shaft alignment device of the build-up measuring device of the steel coil to enable automatic adjustment when the axis alignment failure between the measuring direction axis of the build-up measuring device and the rotating shaft of the coil It aims to provide.

In addition, an object of the present invention is to minimize the measurement error of the build-up measuring device due to poor shaft alignment, to solve the inconvenient manual adjustment method to improve the productivity of the product and improve the product reliability.

As a construction means for achieving the above object, the present invention is a measuring device for measuring the build-up of the steel coil, the moving plate; A measurement assembly mounted to the front surface of the moving plate and measuring a distance and a surface shape; Transfer means for allowing the measurement assembly to move in a horizontal direction on the front surface of the moving plate; A pair of shaft members connected to the rear surface of the movable plate such that the movable plate is rotatable at an angle; And height adjusting means mounted vertically downwardly at one end of the moving plate, wherein the height adjusting means includes a drive motor and a screw shaft connected to the drive motor and erected in a vertical direction. Inserted into one side of the moving plate is moved up or down one side of the moving plate in accordance with its rotation to adjust the axial direction of the moving plate and the steel plate coil to be parallel to each other, the automatic shaft of the build-up measuring device of the steel plate coil Provide an alignment device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Figure 5 is a perspective view of the automatic axis alignment device of the build-up measuring apparatus according to the present invention, Figure 6 is an operating state diagram of the automatic axis alignment device of the build-up measuring apparatus according to the present invention.

The automatic shaft aligning device according to the present invention is characterized by including a height adjusting means for adjusting the height of one side of the moving plate of the measuring device for measuring the build-up of the steel sheet coil. In addition, it is also characterized by improving the connection structure of the pair of shaft members for supporting the moving plate for height adjustment.                     

The moving plate 122 is a plate having a rectangular shape, and has a predetermined thickness, and is equipped with a measurement assembly 125 having various measurement sensors gathered on the front surface thereof. The measuring assembly 125 is mounted to be movable along the transverse direction of the moving plate 122 to measure the horizontal build-up of the coil. A transfer means 128 is also mounted to the moving plate 122 to move the measuring assembly 125 in the horizontal direction.

The conveying means 128 preferably includes a drive motor 141 and a screw shaft 142 connected to the drive motor 141. The screw shaft 142 is mounted to the moving plate 122 in the horizontal direction and rotated by the driving motor 141. The screw shaft 142 is inserted into the measuring assembly 125, so that the measuring assembly 125 is moved in the horizontal direction by the rotation of the screw shaft 142.

The moving plate 122 is supported by a pair of shaft members 120 connected to the rear surface thereof, and has an angle adjusting means for lifting the moving plate so that the moving plate 122 is positioned at a position adjacent to the coil. It is fixed to the bottom surface so that it can rotate. The angle adjusting means rotates the shaft member 120 through a driving motor to adjust the angle of the shaft member, and the pair of shaft members 120 are connected by the connecting bar 152 to move at the same angle to each other. . The shaft member 120 is pinned to the bottom surface to be rotatable.

One side of the moving plate 122 is mounted with a height adjusting means 100 extending vertically. Height adjusting means 100 is connected to the drive motor 102 and the drive motor to include a screw shaft (101) standing in the vertical direction. The screw shaft 101 is inserted into one side of the moving plate 122 to operate to raise or lower one side of the moving plate according to its rotation. Preferably, the movable plate has a protrusion 105 protruding from one side thereof, and the screw shaft 101 is inserted into the protrusion 105 so that the movable plate may be raised or lowered according to the rotation of the screw shaft. The height adjusting means 100 is adjusted to raise or lower one side of the moving plate 122 so that the axial direction of the moving plate and the steel plate coil are parallel to each other.

Referring to Figures 5 and 6 the operation of the automatic axis alignment device of the build-up measuring apparatus of the steel sheet coil according to the present invention as described above are as follows.

The plated steel sheet 200 is wound on the rotation shaft 230 of the tension reel to be a product in the form of a coil 200. In this way, coil winding failure called build-up occurs when the thickness variation or thickness variation of the steel sheet occurs during winding by hundreds of rotations, and the build-up measuring device used to measure the build-up is the width of the coil. In order to measure the directional distance profile, the measurement assembly 125 performs measurements in the width direction of the coil. In order for the measurement assembly 125 to be located in the width direction of the coil, the moving plate 122 must first be positioned on the side of the coil. First, the angle of the pair of shaft members 120 supporting the moving plate 122 is desired. Adjust to an angle. This angle can be adjusted by separate angle adjusting means.

When the moving plate 122 reaches a predetermined position, the measuring assembly 125 of the moving plate front surface is moved in the width direction of the coil and measured. That is, the measurement value is primarily measured by the measurement sensors that detect the distance and the surface shape. At this time, if the measured value is consistently measured based on the part without the build-up in the coil (A in FIG. 7), it can be confirmed that the shaft of the coil and the moving plate 122 are parallel to each other.

On the contrary, when the primary measured value is curved as shown in B of FIG. 7, it means that the axis of the coil and the moving plate 122 are not parallel to each other, so that the work of aligning the axes of the moving plate is necessary.

To this end, the height adjusting means connected to one side of the moving plate 122 is operated. The screw shaft 101 is rotated by driving the motor 102 of the height adjusting means 100, and accordingly, only one side of the moving plate 122 is raised or lowered so as to be parallel to each other with the rotating shaft of the coil.

At this time, the axis alignment correction value, that is, the rising or falling value (H) of the moving plate is obtained through the following equation. 6, the left side of the coil is a drive side and the right side is a work side.

DSh: profile average on the drive side

WSh: average profile of the work side
K: correction factor

H = K (WSh-DSh), 0 <K <1

Becomes In this case, when the correction amount H is calculated by the axis alignment correction amount calculating unit 160, the resultant value is applied to the position controller 165 of the axis alignment motor 102. The position controller 165 rotates the motor forward or reverse to move the moving plate 122 by the correction amount H. When the motor rotates forward or reverse, the work side moves in the axial alignment movement direction.

At this time, since the torsion occurs in the movable plate 122, the shaft member 120 and the movable plate 122 is preferably connected to each other in the following structure shown in FIG. That is, the pair of shaft members 120, the ball 132 is formed at the end connected to the moving plate 122, the ball insertion hole 133 is formed on the rear surface of the moving plate is formed, and By the same structure, the movable plate can be rotated at any angle with respect to the shaft member.

In addition, it is preferable to use a flexible coupling in order to absorb the torsion generated in the screw shaft 142 of the conveying means mounted on the moving plate 122. The basic structure of the flexible coupling is shown in FIG. This shows a typical flexible coupling, which is a mechanical element used when the centerline between the driven shaft (c) and the main shaft (d) does not exactly match.

After the height correction is performed through the height adjusting means 100 as described above, the widthwise buildup of the steel sheet coil is measured. Through this height correction, the rotating shaft of the steel sheet coil and the moving plate are positioned parallel to each other, so that the build-up measurement of the steel sheet coil through the measuring assembly is more accurate. Therefore, the line is stopped during the process, the line is aligned, and the line is again. It is possible to prevent a process loss such as operating the.

As described above, according to the present invention, it is possible to automatically adjust the shaft alignment failure between the moving plate of the build-up measuring device and the rotating shaft of the steel sheet coil, and the build-up measurement of the steel sheet coil through the measuring assembly becomes more accurate, and thus the process It is possible to prevent process loss such as stopping the line and aligning the line in the middle and starting the line again, and also improving the productivity of the product and improving the reliability of the product.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (4)

In the measuring device for measuring the build-up of the steel sheet coil, Moving plate; A measurement assembly mounted to the front surface of the moving plate and measuring a distance and a surface shape; Transfer means for allowing the measurement assembly to move in a horizontal direction on the front surface of the moving plate; A pair of shaft members connected to the rear surface of the movable plate such that the movable plate is rotatable at an angle; And And height adjustment means mounted vertically downward on one end of the movable plate. The height adjusting means includes a drive shaft and a screw shaft connected to the drive motor and erected in a vertical direction, wherein the screw shaft is inserted into one side of the moving plate to move up or down one side of the moving plate according to its rotation. An automatic shaft alignment device of a build-up measuring device for a steel sheet coil, characterized in that the axial direction of the plate and the steel sheet coil are adjusted to be parallel to each other. According to claim 1, wherein the conveying means comprises a drive motor, a screw shaft connected to the drive motor and mounted to the moving plate in a horizontal direction, the screw shaft of the conveying means is inserted into the measuring assembly to the rotation of the screw shaft Automatic axis alignment device of the build-up measuring device of the steel sheet coil, characterized in that for moving the measuring assembly in the horizontal direction. According to claim 1, wherein the pair of shaft member is formed at the end connected to the moving plate, the rear surface of the moving plate is formed with a ball insertion hole for inserting the ball, the moving plate is the shaft member Automatic axis alignment device of the build-up measuring device of the steel sheet coil, characterized in that it can be rotated at any angle with respect to. 3. The automatic shaft alignment device of claim 2, wherein the screw shaft of the transfer means is connected to the movable plate through a flexible coupling.

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