Automatic tension system of color coating production line

Abstract

The utility model relates to the technical field of electrical control, in particular to an automatic tension system of a color coating production line, which comprises a frequency converter, a CPU (central processing unit) controller, a plate head detector, an encoder, a tension sensor and a laser ranging sensor. The tension roller is connected with a driving motor, the encoder is installed on the driving motor, and the frequency converter, the plate head detector, the encoder, the tension sensor and the laser distance measuring sensor are all electrically connected with the CPU controller. By arranging feedback devices such as the tension sensor, the plate head sensor, the encoder and the like, the CPU controller adjusts and corrects the speed and the torque of the motor in real time through PID (Proportion Integration Differentiation), so that high-precision tension control can be realized, the situations of tension loss and coil collapse in the production process are avoided, and transmission equipment capable of operating at high precision, high quality and high speed can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical control, in particular to an automatic tension system for a color coating production line. Background Art

[0002] The tension of domestic color-coated plate production lines is mainly established by tension pressure plates and constant tension control. The tension pressure plate relies on pressure and friction, and the front main force drives the steel plate to generate tension. The operation is complicated and unstable. The tension control requires artificial given tension coefficients. The thickness and width of the steel plate will be on the production line at the same time (the size of the steel plate before and after the suture head is different), which will cause tension fluctuations and vibration of the steel plate, affecting the horizontal stripes of the coating plate surface. It is necessary to manually adjust the tension and speed of the production line in real time. Unstable tension causes the steel plate of the production line to deviate, and the steel plate stacking at the tension roller position is folded, causing the production line to stop, which directly affects the company's benefits. The constant tension of the unwinder and the winder cannot be changed in real time during the winding process. The unwinding tension is prone to decrease, the winding tension is too large, etc. in the production process, resulting in loss of tension and collapse. Therefore, the applicant studies an automatic tension system for a color-coated production line in response to the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, an automatic tension system for a color coating production line is provided. By setting feedback devices such as tension sensors, plate head sensors, encoders, etc., the CPU controller uses PID adjustment to correct the motor speed and torque in real time, thereby achieving high-precision tension control, avoiding loss of tension and collapse of rolls during the production process, and being able to meet the transmission equipment requirements of high-precision, high-quality and high-speed operations.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] An automatic tension system for a color coating production line comprises a frequency converter, a CPU controller, a plate head detector, an encoder, a tension sensor and a laser ranging sensor, wherein the plate head detector is installed on the production line, the tension sensor is installed on a tension roller, the tension roller is connected to a drive motor, the encoder is installed on the drive motor, and the frequency converter, the plate head detector, the encoder, the tension sensor and the laser ranging sensor are all electrically connected to the CPU controller.

[0006] Preferably, the plate head detector adopts a CCD through-hole scanning sensor for scanning the through-holes of the suture head; the frequency converter adopts an S120 frequency converter for real-time feedback of system data.

[0007] Preferably, the encoder detects the running speed of the production line in real time. When the production line produces a steel plate of a certain size, there is a corresponding tension section. Each time the sewing head passes through a tension roller, the encoder automatically switches the corresponding tension.

[0008] Preferably, the laser ranging sensor detects the height data of the steel plate in real time.

[0009] Preferably, the CPU controller receives detection signals sent by the plate head detector, encoder, tension sensor and laser ranging sensor in real time, and outputs control signals in real time to control the speed and torque of the drive motor through PID regulation.

[0010] Preferably, the encoder is connected with a start switch SW1, a speed indicator light HL1, a speed indicator light HL2 and a speed indicator light HL3, and the start switch SW1 is electrically connected to the drive motor.

[0011] By adopting the above technical scheme, the utility model provides an automatic tension system for a color coating production line, which has the following beneficial effects: a plate head detector in the automatic tension system of the color coating production line is installed on the production line, a tension sensor is installed on a tension roller, the tension roller is connected to a drive motor, an encoder is installed on the drive motor, a frequency converter, a plate head detector, an encoder, a tension sensor and a laser ranging sensor are all electrically connected to a CPU controller, and the plate head detector is provided to solve the problems of false detection and missed detection caused by deviation of the steel plate, thereby ensuring the accuracy of detecting the stitching head; by providing feedback devices such as tension sensors, plate head sensors, encoders, etc., the CPU controller corrects the motor speed and torque in real time through PID adjustment, and for this tension control method, since it performs closed-loop control, high-precision tension control can be achieved, thus avoiding tension loss and roll collapse during the production process, and can meet the transmission equipment requirements of high-precision, high-quality and high-speed operation, and the online control of the entire production line is stable and energy-saving, thereby realizing continuous high-speed production on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural block diagram of the utility model;

[0013] Figure 2 This is the electrical schematic diagram of the frequency converter and CPU controller in the utility model;

[0014] Figure 3 This is the electrical schematic diagram of the encoder in the utility model;

[0015] Figure 4 This is the electrical schematic diagram of the plate head detector and the tension sensor in the utility model;

[0016] Figure 5 This is the electrical schematic diagram of the laser distance measuring sensor in the utility model;

[0017] In the figure, 1- frequency converter, 2- CPU controller, 3- board head detector, 4- encoder, 5- tension sensor, 6- laser ranging sensor, 7- driving motor. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] like Figure 1-5 As shown, the automatic tension system of the color coating production line includes a frequency converter 1, a CPU controller 2, a plate head detector 3, an encoder 4, a tension sensor 5 and a laser distance sensor 6. The plate head detector 3 is installed on the production line, and the tension sensor 5 is installed on the tension roller. The tension roller is connected to a drive motor 7, and the encoder 4 is installed on the drive motor 7. The frequency converter 1, the plate head detector 3, the encoder 4, the tension sensor 5 and the laser distance sensor 6 are all electrically connected to the CPU controller 2. It can be understood that the plate head detector 3 adopts a CCD through-hole scanning sensor for scanning the through-hole of the suture head, and adopts a new scanning detection technology to solve the problems of false detection and missed detection caused by the deviation of the steel plate, and ensure the accuracy of the detection of the suture head; the frequency converter 1 adopts a Siemens S120 frequency converter for real-time feedback of system data, and cooperates with the 1516 Siemens system CPU controller 2 to read and feedback system data in real time, and convert the tension display.

[0022] Specifically, the encoder 4 detects the running speed of the production line in real time. When the production line produces a steel plate of a certain size, the corresponding tension section is generated. When the sewing head passes a tension roller, the encoder 4 automatically switches the corresponding tension. The laser distance sensor 6 detects the height data of the steel plate in real time. The CPU controller 2 receives the detection signals sent by the plate head detector 3, the encoder 4, the tension sensor 5 and the laser distance sensor 6 in real time, and outputs the control signal to control the speed and torque of the drive motor in real time through PID regulation. The encoder 4 is connected with a start switch SW1, a speed indicator HL1, a speed indicator HL2 and a speed indicator HL3, and the start switch SW1 is electrically connected to the drive motor. It can be understood that each set of tension roller motors is equipped with an encoder to measure the speed of the production line in real time. When the production line produces a steel plate of a certain size, the corresponding tension section is generated. When the sewing head passes a tension roller, the corresponding tension is automatically switched to achieve real-time control and display the position of the sewing head on the production line screen. Closed-loop control is achieved, and the mode can be set manually or automatically. The tension of the furnace area is fed back by the laser distance sensor.

[0023] It can be understood that the utility model has the following advantages: 1. Fully automatic tension control mode, based on open-loop tension control, uses tension sensors, tension rollers, suture head through-hole detection sensors, encoders and other feedback devices, through PID adjustment, real-time correction of motor speed and torque, thereby achieving higher tension control accuracy. For this tension control mode, due to its closed-loop control, high-precision tension control can be achieved, which can meet the transmission equipment requirements of high-precision, high-quality and high-speed operation. 2. Fast response and high stability. 3. Automatically switch tension. The suture head (narrow and wide plate) is not in the same position on the production line. When it reaches the tension roller, the tension is automatically switched, and the meter and suture head detection device are used for measurement, and the real-time position is displayed on the WINCC operation interface. 4. The steel plate in the furnace area is set to a specified height through a laser distance sensor. The front and rear tension rollers in the furnace area of ​​the production line automatically realize the corresponding speed and torque control, and production is carried out according to the set speed of the production line. The height of the steel plate is maintained at the set height to prevent the plate surface from scraping the furnace; the uncoiler loads the coil and the winder, and the distance sensor calculates the real-time coil diameter by entering the material weight. The background program calculates and automatically matches the tension output in real time.

[0024] It can be understood that the utility model has a reasonable design and unique structure and has the following advantages: by designing a complete set of control schemes and controlling system calculations, the entire production line is controlled online to be stable and energy-saving, and continuous high-speed production is achieved on the production line. The system has no service life, the production line runs stably, and the product qualification rate is above 99%.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An automatic tension system for a color coating production line, characterized by: It includes a frequency converter, a CPU controller, a plate head detector, an encoder, a tension sensor and a laser ranging sensor. The plate head detector is installed on the production line, the tension sensor is installed on the tension roller, the tension roller is connected to a drive motor, the encoder is installed on the drive motor, and the frequency converter, the plate head detector, the encoder, the tension sensor and the laser ranging sensor are all electrically connected to the CPU controller.

2. The automatic tension system of the color coating production line according to claim 1 is characterized by: The plate head detector adopts a CCD through-hole scanning sensor for scanning the through-holes of the suture head; the frequency converter adopts an S120 frequency converter for real-time feedback of system data.

3. The automatic tension system of the color coating production line according to claim 2 is characterized by: The encoder detects the running speed of the production line in real time. When the production line produces a steel plate of a certain size, there is a corresponding tension section. Each time the sewing head passes through a tension roller, the encoder automatically switches the corresponding tension.

4. The automatic tension system of the color coating production line according to claim 3 is characterized by: The laser ranging sensor detects the height data of the steel plate in real time.

5. The automatic tension system of the color coating production line according to claim 1 is characterized by: The CPU controller receives the detection signals sent by the plate head detector, encoder, tension sensor and laser ranging sensor in real time, and outputs control signals in real time to control the speed and torque of the driving motor through PID regulation.

6. The automatic tension system of the color coating production line according to claim 2 is characterized by: The encoder is connected with a start switch SW1, a speed indicator light HL1, a speed indicator light HL2 and a speed indicator light HL3, and the start switch SW1 is electrically connected to the drive motor.

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