KR102075211B1 - Device and method for controlling winding by winding image - Google Patents

Abstract

The present invention relates to a winding control apparatus and method using a wound shape image analysis, wherein the winding control device through a wound shape image analysis according to an embodiment of the present invention provides temperature data for a wound coil moving on an air cooling stand. Temperature data imaging unit for imaging to obtain image data, the shape of each ring constituting the coil through the image data to track, the shortest distance between the side wall and the coil installed along the direction in which the coil moves and the angle A coil shape tracking unit for deriving a distance between rings, and a winding shape control unit for adjusting a ring radius of the coil or a distance between each ring when the shortest distance or the distance between each ring exceeds a preset normal range; do.

Description

Winding control device and method through winding shape image analysis {DEVICE AND METHOD FOR CONTROLLING WINDING BY WINDING IMAGE}

The present invention relates to a winding control apparatus and a method using the winding shape image analysis, and more particularly, to improve the winding shape, binding and handling flaws through wire rod winding shape control.

The wire rod cooling process is a process in which the rolled coil is cooled to the winding temperature of the laying head and the reeler, the speed of the conveyor, and the air volume of the blower to derive the desired characteristics. The control of structure properties in wire rod cooling is of course important, but the importance of winding shape control cannot be neglected. Inadequate control of the coil shape on the air-cooled stand can cause fatal defects in subsequent R / T integration and binding.

In general, the wound state of the wire rod must be wound with a high degree of filling by the laying head to have advantages in shape and binding defects, and the surface of the product is maintained even when the wound wire rod is transported to the consumer. Greatly affect the quality of the condition. Therefore, the wire winding with excellent filling degree should be made, and the most common technique is a wobbling control method for controlling the speed of the laying head in a predetermined pattern. The wobble control method refers to a technique of controlling a shape by variably applying a ring diameter of a coil to control a winding shape.

Wobble control technology is the most important technology among the wire winding control. In general, as much as possible to reduce the wobble amplitude condition, it helps to control the winding shape. However, in applications with excessive wobble amplitudes, the wound wire may rub against and contact both walls of the air cooler, causing further scratches. 1 is a view showing a quality defect of the wire rod wound by the conventional wobble control by hand and Figure 2 is a photograph showing the scratches occurring during the movement on the air-cooling table. As shown in FIG. 1, when the wobble amplitude is excessively applied, some of the wound wire rod and the air cooling wall wall may rub against each other, resulting in a quality defect as shown in FIG. 2.

An element which must be achieved simultaneously with the distance adjustment between the wound wire rod and the air cooling wall is the distance between the winding ring and the ring. It is necessary to adjust the distance between the winding ring and the ring and the distance between both the wound wire and the air cooling wall. Proper control of the distance between the wound wire and the air cooler side wall and the distance between the winding ring and the ring has a significant impact on the quality of the finally produced wire rod. However, since there is no quantitative determination criteria for these, the quality deviation occurs because the operator performs the winding control by manual labor.

3 and 4 respectively show a winding shape when winding control is preferably performed and a winding shape when it is not, and FIG. 5 shows a winding shape of the wire rod finally produced when winding control is not preferably performed. do. If proper wobble amplitude control and proper winding-to-ring spacing control are not achieved, irregularly wound wire rods are produced as shown in FIGS. 4 and 5, which adversely affects packaging and transportation.

Korea Patent Publication No. 10-2003-0052429A (Published: November 26, 2007)

The technical problem to be solved by the present invention is a winding control device by analyzing the wound shape image that can prevent the scratches caused by friction between both the wire rod and the air cooler wall wound by applying the wobble amplitude of the appropriate range during the selective winding And a method.

Another technical problem to be solved by the present invention is to apply a winding shape image analysis that can prevent the defects in the final shape of the wound wire by applying the distance of the winding ring and the distance between the rings in the appropriate winding time. The present invention provides a winding control apparatus and method.

Another technical problem to be solved by the present invention is to provide a winding control apparatus and method through the analysis of the wound shape that can properly maintain the distance between the winding wire and another winding wire.

A winding control apparatus through winding shape image analysis according to an embodiment of the present invention includes a temperature data imaging unit configured to obtain image data by imaging temperature data of a wound coil moving on an air-cooling table, and the coil through the image data. A coil shape tracking unit for tracking the shape of each ring constituting the coil to derive the shortest distance between both sidewalls and the coils installed along the moving direction of the coil and the distance between the respective rings, and the shortest distance or each ring When the distance between the distance exceeds the preset normal range, it may include a winding shape control unit for adjusting the ring radius of the coil or the distance between each ring.

The coil shape tracking unit may include a coordinate data derivation unit for deriving coordinate data obtained by coordinates a continuous position of each ring shape, and calculate the shortest distance through the coordinate data.

The coil shape tracking unit may further include an inflection point derivation unit for deriving an inflection point of each ring by calculating a slope of a tangent having a continuous position of each ring as a contact point, and a distance between each ring through coordinates of the inflection point. Can be calculated.

In addition, the winding control apparatus through the winding shape image analysis according to an embodiment when the distance between the coil and the distance between the coil tracking the front and rear distance between the plurality of coils moving on the air-cooled table and the distance between the coils exceeds a preset range The apparatus may further include a distance adjuster configured to adjust the distance between the coils.

According to another aspect of the present invention, there is provided a winding control method through winding shape image analysis, which obtains image data by imaging temperature data of a wound coil moving on an air cooling stand, and constructing the coil through the image data. Tracing the shape of each ring to derive the shortest distance between both sidewalls installed along the direction in which the coil moves and the coil and the distance between each ring, and the shortest distance or the distance between each ring is a predetermined normal If exceeding the range, it may include adjusting the ring radius of the coil or the distance between each ring.

In addition, tracking the shape of each ring constituting the coil through the image data, deriving the shortest distance between the two side walls and the coil installed along the direction in which the coil is moved and the distance between each ring, The method may include calculating coordinates of the shortest distance by deriving coordinate data of coordinates of a continuous position with respect to the shape of each ring.

In addition, tracking the shape of each ring constituting the coil through the image data, deriving the shortest distance between the two side walls and the coil installed along the direction in which the coil is moved and the distance between each ring, Deriving an inflection point of each ring by calculating a slope of a tangent line as a contact point of a continuous position of each ring; And calculating a distance between each ring based on the coordinates of the inflection point.

In addition, the winding control method through the winding shape image analysis according to an embodiment of the step of tracking the front and rear distance between the plurality of coils moving on the air-cooling table and when the distance between the coils exceeds a preset range, The method may further include adjusting the distance.

According to the present invention, the winding control apparatus and method of the winding shape image analysis, by adjusting the distance between the winding ring and the ring and the distance between both the wound wire rod and the air-cooling wall, both the wound wire rod and air-cooling stand Not only does it prevent scratches caused by friction between walls, but defects do not occur in the final shape of the wound wire rod.

1 is a diagram showing a state in which a quality defect of a wire rod wound by a conventional wobble control is manually performed.
2 is a photograph showing scratches generated during the movement on an air-cooled stand.
3 and 4 are diagrams each showing a winding shape when winding control is preferably performed and a winding shape when it is not.
5 is a photograph showing the winding shape of the wire rod finally produced when the winding control is not preferably made.
6 is a block diagram illustrating a winding control device through a winding shape image analysis according to an exemplary embodiment of the present invention.
FIG. 7 is a photograph obtained by obtaining temperature data of a wound coil and imaging the same.
8 is a block diagram illustrating a coil shape tracking unit according to an exemplary embodiment of the present invention.
9 is a photograph for explaining a method of tracking the position data in the width direction and the distance data between each ring from the image data received by the coil shape tracking unit from the temperature data imaging unit according to an embodiment of the present invention.
10A and 10B are graphs and photographs obtained by obtaining widthwise position data, respectively.
FIG. 11 illustrates an example of a screen in which the coil shape tracking unit displays the shortest distance between the coil and both sidewalls moving on the air-cooled table on the operator screen, according to an exemplary embodiment.
12 is a graph showing a distance tracking unit between the plurality of coils moving on the air-cooled table according to an embodiment of the present invention.
13A and 13B respectively show images of the coil wound and the case where the winding control apparatus or method through the winding shape image analysis according to the exemplary embodiment of the present invention is not applied and applied.
FIG. 14 illustrates the number of handling defects of the wire coil when and when the winding control device or method is not applied through the winding shape image analysis according to an embodiment of the present invention.
15 is a flowchart illustrating a winding control method through winding shape image analysis according to another embodiment of the present invention.
FIG. 16 is a flowchart illustrating a method of tracking the shape of each ring constituting a coil through the acquired image data to derive the shortest distance between the two sidewalls and the coil and the distance between the rings installed along the moving direction of the coil.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

FIG. 6 is a block diagram illustrating a winding control apparatus through a winding shape image analysis according to an embodiment of the present invention, and FIG. 7 is a photograph obtained by obtaining and imaging temperature data of a wound coil. A block diagram illustrating a coil shape tracking unit according to an exemplary embodiment of the present invention. The winding control apparatus through the winding shape image analysis according to an exemplary embodiment of the present invention includes a temperature data imaging unit 100, a coil shape tracking unit 200, and a winding shape control unit 300. In addition, according to another embodiment of the present invention may further include a distance between the coil tracking unit 400 and the distance adjusting unit 500.

On the other hand, the term '~ part' used in this embodiment, that is, '~ module' or '~ table' and the like, may be hardware, such as software, field programmable gate array (FPGA), or application specific integrated circuit (ASIC). A component, a module performs some function. However, modules are not meant to be limited to software or hardware. The module may be configured to be in an addressable storage medium and may be configured to play one or more processors. Thus, as an example, a module may include components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, procedures, subroutines, and the like. , Segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functionality provided within the components and modules may be combined into a smaller number of components and modules or further separated into additional components and modules. In addition, the components and modules may be implemented to reproduce one or more CPUs in a device.

The temperature data imaging unit 100 obtains image data by imaging the temperature data of the wound coil moving on the air cooling stand. As illustrated in FIG. 7, the temperature data imaging unit 100 receives temperature data of a wound coil moving on an air cooling stand, and then obtains image data imaged using the temperature data.

Next, the coil shape tracking unit 200 tracks the shape of each ring constituting the coil through the image data acquired by the temperature data imaging unit 100, and both sidewalls installed along the direction in which the coil moves on the air-cooling table. The shortest distance between the coil and the coil and the distance between each ring. In detail, the coil shape tracking unit 200 may include a coordinate data derivation unit 210 and an inflection point derivation unit 220 as shown in FIG. 8.

FIG. 9 illustrates a method in which the coil shape tracking unit 200 tracks position data in the width direction and distance data between each ring from the image data received from the temperature data imaging unit 200 according to an embodiment of the present invention. 10A and 10B are graphs and photographs obtained by obtaining width direction position data, respectively.

The coordinate data derivation unit 210 derives coordinate data obtained by coordinates a continuous position with respect to the shape of each ring. Among these, first, it is necessary to track and acquire the position in the width direction of the wound coil in order to adjust the distance between the wound coil and both walls constituting the air cooling zone. The red arrow direction from left to right shown in FIG. 9 is the width direction, and the coordinate data derivation unit 210 first derives coordinate data of each ring with respect to the width direction. For example, if the derived coordinate data is represented in a graph, it may be the same as the red line shown in zigzag form in FIG. 10A. Among these, in order to statically maintain the distance between the coil and both walls on the air cooling stand during the wobble control operation, coordinate data of the outermost line of the coil is necessary. In the graph shown in FIG. 10A, the blue outline on the upper side and the yellow outline on the lower side mean coordinates of both outermost lines in the width direction of the foil, respectively. If this is expressed in the image data, for example, it may be expressed as a green outline shown in FIG. 10B.

Coil shape tracking unit 200 is a coil and both side walls that move on the air-cooled table by using the coordinate data of the outermost line as shown in FIG. 10A or FIG. The shortest distance between the livers is calculated and obtained and displayed on the human machine interface (HMI). FIG. 11 illustrates an example of a screen in which the coil shape tracking unit displays the shortest distance between the coil and both sidewalls moving on the air-cooled table on the operator screen. Referring to FIG.

Meanwhile, although coordinates of pixels of each image applied to the image data may be used as the coordinate data, the coordinate data in the present invention is not limited thereto.

The inflection point derivation unit 220 derives the inflection point of each ring by calculating the slope of the tangent line having the continuous position of each ring as a contact point. To this end, the inflection point deriving unit 220 first receives coordinate data from the coordinate data deriving unit 210 that coordinates a continuous position with respect to the shape of each ring. Since the shape of each ring of the coil is curved, it is possible to obtain a tangent at each coordinate through which the shape of each ring passes, and obtain an inflection point through the slope of these tangents. For example, taking the picture shown in FIG. 9 as an example again, the coordinate at the instant when the slope at each successive coordinate of each successive ring changes from a positive value to a negative value (ie, a point where the slope is zero) Can be obtained as an inflection point. Coil shape tracking unit 200 obtains the distance between each ring through the coordinates of these inflection points. For example, in FIG. 9, the starting points of the two blue arrows A and B refer to the inflection points of each of two adjacent rings of some of the curves represented by the plurality of rings, and the upper and lower points shown between the two blue arrows A and B. The length of the red arrow in the direction means the distance between these two rings.

The winding shape control unit 300 adjusts the ring radius of the coil or the distance between each ring when the shortest distance between both sidewalls installed along the direction in which the coil moves and the distance between the coils or each ring exceeds a preset normal range. do.

For example, if the reference residual distance between one of the two side walls on the air-cooler and the coil is a preset value (e.g., 15 mm or less), reduce the current wobble amplitude ratio by 2% and be at or above the preset value. In contrast, you can increase the amplitude by 2%. The distance between each ring in one coil is also set based on a preset value, and the winding speed or the moving speed of the coil is controlled by comparing the distance between each ring acquired by the coil shape tracking unit 200 and the preset value. The distance between the rings can be adjusted.

12 is a graph illustrating a distance between the coils according to an embodiment of the present invention, which tracks distances between a plurality of coils moving on the air-cooling table. According to another exemplary embodiment of the present invention, the winding control apparatus through the winding shape image analysis may further include a distance tracking unit 400 and a distance adjusting unit 500 between coils. Inter-coil distance tracking unit 400 tracks the front and rear distance between the plurality of coils moving on the air-cooled. 12 is a graph illustrating a distance between a plurality of coils moving between air coils by the distance tracking unit 400, and the distance adjusting unit 500 determines whether the distance between the coils is within a predetermined reference range. If the distance between coils exceeds a preset range, the distance between coils is adjusted by controlling the moving speed of the coil on the air-cooled stand.

13A and 13B show an image of a coil when the winding control apparatus or method through the winding shape image analysis according to an embodiment of the present invention is not applied, and an applied coil when the applied coil is applied, and FIG. The number of handling defects of the wire rod coil when the winding control device or the method through the winding shape image analysis according to an embodiment of the present invention is not applied or when the coil is applied is shown.

As can be seen by comparing FIG. 13A and FIG. 13B, when the winding control apparatus or method through the winding shape image analysis according to an embodiment of the present invention is applied, by controlling the diameter of each ring and the distance between each ring during wobble control In the case where the present invention is not applied, the protrusion of the coil shape seen in FIG. 13A is reduced. In addition, as can be seen from FIG. 14, as the protrusion of the coil shape is reduced, scratches generated by contacting both side walls of the air cooling zone and some rings of the coil are improved by about 60%.

FIG. 15 is a flowchart illustrating a winding control method through winding shape image analysis according to another embodiment of the present invention. FIG. 16 is a diagram illustrating a shape of each ring constituting a coil through the acquired image data, and the coil is moved. It is a flowchart showing the step of deriving the shortest distance between the two side walls and the coils installed along the direction and the distance between each ring.

According to another aspect of the present invention, there is provided a winding control method through winding shape image analysis to obtain image data by imaging temperature data of a wound coil moving on an air cooling stage (S100). Deriving the shortest distance between the two sidewalls and the coil and the distance between each ring and tracking the shape of each ring constituting the coil (S200) and the shortest distance or the distance between each ring If exceeds a preset normal range, it may include the step of adjusting the ring radius of the coil or the distance between each ring (S300). According to another embodiment of the present invention, the step of tracking the front and rear distance between the plurality of coils moving on the air-cooled (S400, not shown) and when the distance between the coils exceeds a preset range, the distance between the coils The method may further include adjusting (S500, not shown).

In addition, step 200S of FIG. 15 may include a step (S210) of calculating the shortest distance by deriving coordinate data of coordinates of continuous positions of the shapes of each ring, and contacting the continuous positions of each ring. Deriving an inflection point of each ring by calculating the slope of the tangent line (S220) and calculating the distance between each ring through the coordinates of the inflection point (S230).

For a detailed description of the winding control method through the winding shape image analysis, refer to the corresponding description of the winding control device through the winding shape image analysis, and specific technical contents and effects thereof are omitted to avoid repetitive description. do.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted.

10: winding control device through winding shape image analysis
100: temperature data imaging unit
200: coil shape tracking unit
210: coordinate data derivation unit
220: inflection point derivation unit
300: winding shape control unit
400: distance tracking unit between coils
500: distance adjuster

Claims (8)

A temperature data imaging unit configured to image temperature data of the coils and to obtain image data when a coil including a plurality of rings wound from an laying head through the air cooling stand moves on the air cooling stand;
The shape of each ring of the plurality of rings on the air-cooling table through the image data, the coil shape to derive the shortest distance between the two sidewalls and the coils along the direction in which the coil moves and the distance between each ring Tracking unit; And
And a winding shape control unit configured to adjust a ring radius of the coil or a distance between each ring when the shortest distance or the distance between each ring exceeds a preset normal range. The method of claim 1,
The coil shape tracking unit,
And a coordinate data derivation unit for deriving coordinate data coordinated with a continuous position with respect to the shape of each ring,
The winding control device through the winding shape image analysis to calculate the shortest distance through the coordinate data. The method of claim 1,
The coil shape tracking unit,
An inflection point derivation unit for deriving an inflection point of each ring by calculating a slope of a tangent having a continuous position of each ring as a contact point,
The winding control device through the winding shape image analysis to calculate the distance between each ring through the coordinates of the inflection point. The method of claim 1,
Inter-coil distance tracking unit for tracking the front and rear distance between the plurality of coils moving on the air-cooled stand; And
If the distance between the coils exceeds a preset range, further comprising a distance adjusting unit for adjusting the distance between the coils, winding control device through the winding shape image analysis. Imaging the temperature data for the coil when the coil consisting of a plurality of rings wound from the laying head through the air cooling stand moves on the air cooling stand to obtain image data;
Tracing the shape of each ring of the plurality of rings on the air cooling unit through the image data to derive the shortest distance between the two side walls and the coils installed along the moving direction of the coil and the distance between each ring; And
And adjusting the ring radius of the coil or the distance between each ring when the shortest distance or the distance between each ring exceeds a preset normal range. The method of claim 5,
Tracking the shape of each ring constituting the coil through the image data, and deriving the shortest distance between the two side walls and the coil installed along the moving direction of the coil and the distance between each ring,
And calculating the shortest distance by deriving coordinate data coordinated with a continuous position of the shape of each ring, winding shape image analysis through winding shape image analysis. The method of claim 5,
Tracking the shape of each ring constituting the coil through the image data, and deriving the shortest distance between the two side walls and the coil installed along the moving direction of the coil and the distance between each ring,
Deriving an inflection point of each ring by calculating a slope of a tangent line as a contact point of the consecutive positions of each ring; And
And calculating a distance between each ring based on the coordinates of the inflection point. The method of claim 5,
Tracking back and forth distances between the plurality of coils moving on the air-cooled stand; And
And adjusting the distance between the coils when the distance between the coils exceeds a preset range.

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