KR100651217B1 - A method for sencing and controlling cord ends per inch for calender - Google Patents

Abstract

A method for automatically detecting and controlling cord arrangement for calendering is provided to basically prevent the problem caused by an inconsistency of the cord arrangement by variably controlling the width of cord sheet, and to improve the uniformity quality which is important for tire. The method for automatically detecting and controlling cord arrangement for calendering process which is used for variably controlling the width of cord sheet according to the detected change of the cord arrangement, comprises the steps of: setting(S1) the control width of the cord sheet and the cord arrangement(EPI; Ends per Inch) so as to control the cord sheet; starting(S2) the process; measuring(S3) the width of the cord sheet by continuously photographing the partial cord arrangement of the whole width of the cord sheet using cameras after the cord sheet is led into a calender; calculating(S4) the deviation from the set value; transmitting(S5) the calculated data to an image processor; and adjusting(S6) the position of an expander roll.

Description

A method for sencing and controlling cord ends per inch for calender}

1 is a diagram showing a code array automatic detection and control system for a calendar according to the present invention;

2 is a flowchart illustrating an operation flow for automatically detecting and controlling a coder code array by a calendar code array automatic detection and control system according to the present invention;

3 is a view showing a conventional code array system for calendars;

4 is a flowchart for explaining the operation flow of a calendar code array by a conventional calendar code array system.

<Description of the symbols for the main parts of the drawings>

1 --- cord paper fabric, 2 --- fabric width sensor,

3 --- controller, 5 --- hydraulic power unit,

6 --- cylinder, 7 --- linear controlled transducer,

9 --- expander roll, 10 --- image processor,

C1 ~ C3 --- Line Camera.

The present invention relates to a method for automatically detecting and controlling a cord array for a calender. In particular, the cord array of a fabric is directly observed through a macro and a micro lens during a coating operation of a fabric or steel fabric, and the arrangement of the cords according to each fabric position is performed. By using the system that automatically counts and calculates (EPI: Ends Per Inch), the analysis results are sent to the controller to continuously expand or reduce the width of the fabric. The present invention relates to a method for automatically detecting and controlling a cord arrangement for a calender capable of realizing a uniformity of a tire product using the same and possibly preventing a defect due to uneven code spacing.

In a conventional calendar, a method of uniformly arranging cord arrays is to reduce or expand the individual widths of the middle or both ends of the entire fabric width. The method of adjusting the width of the fabric was mainly used.

For example, the operation flow of the calendar code array by the conventional calendar code array system shown in FIG. 3 is as shown in FIG.

That is, the far-end width detecting sensor 2 is positioned at a preset position, and the deviation information between the width at which the code sheet far-end 1 progresses and the set width is transmitted to the controller 3, which is proportional to the magnitude of the signal deviation. By adjusting the cylinder 6 through the linear control transducer 7 to the size of the hydraulic pressure transmitted from the hydraulic power unit 5 to move the expander roll 9 so that the fabric width is expanded or contracted, accordingly The code arrangement will also be controlled.

However, the conventional width control method as described above is based on the reproducibility that the code array of the raw material fabric is kept constant every lot if the original fabric width is kept the same. ) Tends to be different depending on the supplier of the raw material, and the number of strands of the cord (EPI) is arranged even when the same width of the fabric is coated in the calender according to web guiding and joint of the fabric. It is a situation that cannot solve the problem of being different.

Therefore, the carcass of the tire components is an important element constituting the skeleton of the tire, but if the code in the carcass fabric is unevenly arranged and coated due to defective fabric, bad fabric guiding or fabric bonding, etc. It causes fatality such as poor uniformity or poor gap between cords, and it destroys the value of the tire product. Therefore, it is necessary to keep the code arrangement uniform at all times during the coating work in the calender. It is necessary to automatically detect and to control automatically.

The present invention has been made in view of the above-mentioned point, and it is possible to fundamentally prevent problems due to code array inconsistency by controlling the width of the fabric in a variable manner and controlling the width of the fabric according to the situation. The use of semi-finished products improves the uniformity quality, which is an important characteristic of the tire, and automatically detects and controls the code array for calendars, which can prevent tire overlap due to uneven cord arrangement and poor cord unfolding during tire manufacturing. It is an object to provide a method.

Code array automatic detection and control method of the present invention for solving the above problems, after setting the code control width and code array (EPI) for controlling the code paper fabric, start the work to code code fabric After inserting into the calender, the inserted cord paper fabric is continuously photographed by the camera for the code array (EPI) of each part of the fabric width and the width of the fabric is measured, and the measured image is processed by the built-in program. In order to analyze, calculating a deviation from a target by calculating and aggregating data on an image captured by a camera and transmitted to an image processor, and according to a calculation value transmitted from the image processor, the controller may determine a preset code sequence (EPI) and By calculating the deviation of the measured and calculated cord arrangement, the hydraulic power unit is operated to control the code arrangement (EPI) of the fabric. It is achieved by having the step of continuously adjusting the position of the expander roll until hapdoel.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a diagram illustrating a code array automatic detection and control system for a calendar according to the present invention.

As shown in FIG. 1, an automatic detection and control system for a code array according to the present invention includes a plurality of cameras C1, C2, and C3, a far-end width sensor 2, a controller 3, and a hydraulic power unit. 5), cylinder 6, expander roll 9, and image processor 10.

The process of detecting and controlling the arrangement of codes by the automatic code array detection and control system for calendars of the present invention made as described above is as follows.

First, the code sheet fabric 1 is continuously inserted into the calender through a plurality of fixed or scanning mobile cameras C1 to C3 before the coating operation is carried out, and the code arrays (EPI) of the entire width of the fabric are photographed continuously.

As described above, the images continuously photographed by the cameras C1 to C3 are transmitted to the image processor 10, and the transmitted images are classified by the criteria classified by the optical characteristics (luminance, brightness, saturation) of the image. The number is automatically counted, and the result of calculating and aggregating data on the continuously photographed image is digitally coded and transmitted to the controller 3.

The controller 3 operates by controlling the hydraulic power unit 5 according to an already set code array (EPI) specification and deviation so that the expander roll (9) is continuously applied until the code array (EPI) of the fabric is met. Is operated, and the above process is repeated to control the result.

Referring to Figure 2 will be described in more detail an operation flow for automatically detecting and controlling the coder code array by the calendar code array automatic detection and control system according to the present invention.

That is, as shown in Figure 2, first set the far-end control width and code array (EPI) for controlling the code sheet fabric (S1), and then start the operation (S2) to calender the code sheet fabric (1) Pull in.

Next, the cord paper fabric 1 inserted as described above is continuously photographed by the array of code arrays (EPI) of the entire width of the fabric 1 through the cameras C1 to C3 (S3), The measured image is processed by an embedded program and transmitted to the image processor 10 for analysis.

After calculating and aggregating data about an image captured by the cameras C1 to C3 and transmitted to the image processor 10 (S4), a deviation from a target is calculated (S4), and then the calculated value is transmitted to the controller 3 ( S5).

Next, the controller 3 operates and controls the hydraulic power unit 5 according to the deviation result of the preset code sequence EPI and the measured and calculated code sequence in the step S1. ) Continuously adjusts the position of the expander roll 9 until it satisfies the preset specification (S6).

After that, after measuring the code sequence EPI again (S7), the above process is repeated to automatically detect and control the code sequence.

As described above, according to the present invention, it is possible to fundamentally prevent problems caused by misalignment of the code array by detecting the variation of the code sequence during calendering and controlling the width of the fabric in accordance with the situation. By using it, it is possible to improve the uniformity quality, which is an important characteristic of the tire, and to prevent the tire failure due to the cord overlapping and the unscrewing of the cord due to the unevenness of the cord arrangement during the tire manufacturing.

Claims (1)

In the calendar code automatic detection and control method for detecting the variation of the code array during calender work to control the fabric width variably according to the situation, After setting the fabric control width and code arrangement (EPI) for controlling the code paper fabric (S1), the operation is started (S2) and the code paper fabric 1 is inserted into the calendar, and then the inserted code paper fabric (1) continuously photographing the code array (EPI) for each part of the entire width of the fabric (1) through the camera (C1 ~ C3) to measure the fabric width (S3), In order to process and analyze the measured image by a built-in program, calculating deviation from a target by calculating and aggregating data on an image captured by the cameras C1 to C3 and transmitted to the image processor 10. Step S4, and According to the calculated value transmitted from the image processor 10 (S5), the controller 3 calculates the deviation between the code sequence EPI and the measured code sequence preset in the step S1 and the hydraulic power unit 5 Automatically arrange the code array for the calendar, characterized in that it comprises a step (S6) of continuously adjusting the position of the expander roll (9) until the code sequence (EPI) of the original material meets the preset specification by controlling the operation) Detection and control method.

Images