CN111674998A - A taper tension control system and control method for coiling film-coated board - Google Patents

Abstract

The invention discloses a taper tension control system for coiling a film covering plate and a control method thereof, wherein the taper tension control system comprises a coiling machine, a frequency converter module for controlling the torque of the coiling machine, a displacement encoder module for detecting the coiling length of the film covering plate, a human-computer interface, a controller and a communication module, wherein the human-computer interface, the displacement encoder module and the communication module are electrically connected with the controller, the input end of the frequency converter module is electrically connected with the communication module, and the output end of the frequency converter module is electrically connected with the coiling machine.

Description

A taper tension control system and control method for coiling film-coated board

technical field

The invention relates to the technical field of plate production, in particular to a taper tension control system and a control method for coiling a film-coated plate.

Background technique

In the environment where the emerging film-coated coils are widely used in the market, the market has higher and higher requirements for the quality of film-coated coils. Due to the slow line speed and low investment of the film-coated coil production line, equipment manufacturers usually design The constant tension control system is adopted. During the winding process, the inverter of the winder always outputs a constant current value to ensure the stability and constant of the set tension. This method meets the needs of some thick plate products. According to the prior art, for products with thin material specifications (below 0.45mm) or products with a reticulated surface, due to the low rigidity of such products or the reduction of interlayer contact after the product is coiled, the When the coil diameter increases, the outer layer will squeeze the inner layer. Under the influence of external forces such as bumps in the product transportation process and hoisting process, there is a phenomenon of deformation and collapse, which affects the quality of the product and has poor reliability.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the above defects of the prior art, and to provide a tapered tension control system and a control method for coiling a film-coated board with high reliability.

In order to achieve the above object, the technical scheme of the present invention is:

A tapered tension control system for film-coated board coiling, which includes a coiler, a frequency converter module for controlling the torque of the coiler, a displacement encoder module for detecting the coiling length of the film-coated board, a man-machine interface, a control The man-machine interface, the displacement encoder module and the communication module are all electrically connected to the controller, the input end of the inverter module is electrically connected to the communication module, and the output end of the inverter module is electrically connected to the controller and the communication module. Take the electrical connection.

After adopting the above structure, the present invention has the following advantages compared with the prior art: the displacement encoder module is used to detect the winding length of the film-coated board, the displacement encoder module transmits the detected data to the controller, and the controller calculates the taper tension value , The communication module sends the taper tension value to the inverter module, and changes the torque output value of the inverter, so as to control the torque output by the coiler, and realize the taper tension control to coil the laminated board with high reliability.

Preferably, the controller is a PLC, which is convenient for control.

Preferably, it also includes a proximity switch for controlling the reset of the pulse accumulative value of the displacement encoder module, the proximity switch is arranged above the film-coated board cutting device, the controller is electrically connected to the proximity switch, and the film-coated board is electrically connected to the proximity switch. When the plate is coiled and cut, the cumulative value of the displacement encoder pulse is cleared to facilitate the next cutting.

As a preference, the PLC adopts Siemens S7-200 SMAR, equipped with Siemens special high-speed processor chip, the basic instruction execution time can reach 0.15us, the response is fast, and the efficiency is high.

Preferably, the displacement encoder module is arranged on the drive roller on the film-coated board production line, and the film-coated board is wrapped on the drive roller, so that the displacement encoder rotates with the rotation of the drive roller, so that the conveyed film-coated board can be rotated. test.

Preferably, it also includes a support plate, a side of one end of the support plate is provided with a fixing ring, the fixing ring is sleeved on the transmission roller, and the displacement encoder module is arranged on the other end of the support frame. Simple, easy to fix the displacement coding module on the drive roller.

Preferably, the outer circumference of the fixing ring is provided with at least two fixing holes, and the transmission roller is provided with mounting holes corresponding to the fixing holes, and screws are screwed into the mounting holes through the fixing holes, which is convenient for installation And disassembly, high reliability.

Preferably, the fixing ring and the displacement encoder module are respectively located on two sides of the support plate, with reasonable distribution and no interference.

Preferably, the communication module adopts rs485 communication mode, which has high reliability.

Preferably, it also includes a production kanban, the communication module is electrically connected to the production kanban, and the real-time coiling length data obtained by the rewinding length calculation module is calculated by the communication module of the controller (PLC) and sent to the production kanban, which is convenient for operators The coil length information can be observed from a distance.

Based on the above-mentioned control method of a tapered tension control system for film-coated board winding, it includes the following steps:

1. Fix the displacement encoder module on the drive roller, so that it can measure the displacement of the film-coated plate synchronously, and obtain the pulse signal of the displacement;

2. According to the pulse signal transmitted by the displacement encoder module, the linear speed calculation module is executed through the timer interrupt function of the controller, and the linear speed calculation module is executed every 10ms, so as to calculate the amount of pulses received every 10ms, and then measure the wheel according to the displacement encoder module. The diameter of the encoder module and the number of pulses per revolution of the displacement encoder module calculate the length value of each pulse, and then calculate the movement amount of the 10ms material according to the pulse amount received in 10ms and the length value of each pulse, and then convert the movement amount of the 10ms material into Line speed value per minute, and send real-time line speed data to the man-machine interface;

3. Obtain real-time length data according to the pulse signal transmitted by the displacement encoder module, the diameter of the measuring wheel of the displacement encoder module, and the number of pulses per revolution of the displacement encoder module, and send the real-time length data to the winding weight calculation module, taper tension Computing module and human-machine interface;

4. Calculate the real-time weight of the coiling according to the material density and material specification set by the man-machine interface and the length value calculated by the coiling length calculation module;

5. According to the real-time length data calculated by the rewinding length calculation module, the basic tension value and taper tension compensation rate set on the parameter setting screen of the man-machine interface, and send the real-time dynamic taper tension data to the monitoring screen of the man-machine interface and communication module;

6. Use the dynamic taper tension value calculated by the taper tension calculation module to establish a communication connection between the controller and the inverter module through the rs485 communication method, and send the dynamic taper tension data to the inverter module in the Modbus protocol RTU transmission mode for real-time Change the torque setting value of the inverter, so as to control the output torque of the winder, and realize the taper tension control to wind the film-coated board.

Compared with the prior art, the present invention has the following advantages: using this control method, the taper tension can be controlled more accurately, and the taper tension can be adjusted every 10ms, so that the torque of the frequency converter is always in dynamic change, and the adjustment is carried out in real time. Thin products (below 0.45mm) or products with a reticulated surface will not be deformed and collapsed under the influence of external forces such as bumps in the transportation process and hoisting process. The product has good quality and high reliability.

Description of drawings

Fig. 1 is the front view of the taper tension control system of a kind of film-coated board coiling of the present invention;

Fig. 2 is a circuit schematic diagram of a taper tension control system for film-coated board winding according to the present invention;

3 is a front view of a support frame, a drive roller and a displacement encoder module of a tapered tension control system for film-coated board winding according to the present invention;

Fig. 4 is the wiring diagram of the taper tension control system controller of a film-coated board coiling according to the present invention;

Fig. 5 is a circuit diagram of a taper tension control system for film-coated sheet winding according to the present invention.

Among them, 1. Communication module, 2. Displacement encoder module, 3. Proximity switch, 4. Frequency converter module, 5. Coiler, 6. Controller, 7. Human-machine interface, 8. Drive roller, 9. Fixed Ring, 10, Production Kanban, 11, Fixing hole, 12, Support plate, 61, Linear speed calculation module, 62, Rewinding length calculation module, 63, Rewinding weight calculation module, 64, Taper tension calculation module.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the present invention provides a taper tension control system for film-coated board winding, which includes a coiler 5, a frequency converter module 4 for controlling the torque of the coiler 5, and a coil for detecting the length of the film-coated board. The displacement encoder module 2, the human-machine interface 7, the controller 6 and the communication module 1, the human-machine interface 7, the displacement encoder module 2 and the communication module 1 are all electrically connected with the controller 6, and the frequency converter The input end of the module 4 is electrically connected to the communication module 1, and the output end of the frequency converter module 4 is electrically connected to the coiler 5. The advantage of the present invention is that the displacement encoder module 4 is used to detect the coiling length of the film-coated board, and the displacement encoder The module 4 transmits the detected data to the controller 6, the controller 6 calculates the taper tension value, and the communication module 1 sends the taper tension value to the inverter module 4 to change the torque output value of the inverter, thereby controlling the output value of the coiler. Torque, realize the taper tension control to wind up the laminated board, with high reliability.

The controller 6 is a PLC, which is convenient for control.

It also includes a proximity switch 3 for controlling the reset of the pulse accumulated value of the displacement encoder module 2, the proximity switch 3 is arranged above the film-coated board cutting device, and the controller 6 is electrically connected to the proximity switch 3, When the film-coated board is wound and cut, the cumulative value of the displacement encoder pulse is cleared to facilitate the next cutting. Further, the proximity switch 3 is set above the cutting, and moves up and down with the cutting to check whether the material is cut or not. Detect, and transmit the detected signal to the linear velocity calculation module 61 and the winding length calculation module 62 in the form of Boolean quantity. Clear the cumulative value of the displacement encoder module 2 pulses when the film-coated board is wound and cut. And will record and store the length of the current product off-line lamination roll, in order to provide a basis for checking and checking the length of each product after the production task is completed.

Said PLC adopts Siemens S7-200 SMAR, equipped with Siemens special high-speed processor chip, the basic instruction execution time can reach 0.15us, the response is fast and the efficiency is high.

The displacement encoder module 2 is arranged on the drive roller 8 on the film-coated board production line, and the film-coated board is wrapped on the drive roller 8, so that the displacement encoder rotates with the rotation of the drive roller 8, so as to adjust the transmission of the coated film. The plate is detected, and the displacement encoder module 4 is used to detect the coiling length of the film-coated plate. The displacement encoder module 4 transmits the detected data to the controller 6. The controller 6 calculates the taper tension value, and the communication module 1 sends the taper tension value. To the inverter module 4, change the torque output value of the inverter, so as to control the torque output by the coiler 1, and realize the taper tension control to coil the film-coated board, which has high reliability. Specifically, the displacement encoder adopts Omron high-precision encoder. , the number of pulses per circle is 1000P/R, the diameter of the synchronous wheel is 96.2mm, and the measurement accuracy is 0.3mm.

It also includes a support plate 12 , the side of one end of the support plate 12 is provided with a fixing ring 9 , the fixing ring 9 is sleeved on the transmission roller 8 , and the displacement encoder module 2 is arranged on the other side of the support frame 10 . On one end, the structure is simple, and it is convenient to fix the displacement coding module 2 on the transmission roller 8 .

The outer circumference of the fixing ring 9 is provided with at least two fixing holes 11, and the transmission roller 8 is provided with mounting holes corresponding to the fixing holes 11, and screws are used to pass through the fixing holes 11 and are screwed into the mounting holes, Easy installation and disassembly, high reliability.

The fixing ring 9 and the displacement encoder module 2 are respectively located on the two sides of the support plate 12, and the distribution is reasonable and will not cause interference.

The communication module 1 adopts the rs485 communication mode with high reliability.

The coiler 5 provides tension for the film-coated plate and is wound into a roll-shaped device, and its speed and torque are controlled by the inverter module 4; the inverter module 4 receives the torque given command from the controller 6 (PLC), And output the electric energy of torque current, voltage and frequency to control the motor of the coiler; the displacement encoder module 2 is arranged on the drive roller 8 of the film-coated board production line, and the film-coated board is wrapped on the drive roller 8, and along with the drive roller 8 It rotates and rotates to detect the transmitted film-coated board, and the detected information is transmitted to the winding length calculation module in the form of pulse signal.

Specifically, the controller 6 includes a linear speed calculation module 61 , a winding length calculation module 62 , a winding weight calculation module 63 , and a taper tension calculation module 64 . The linear speed calculation module 61 is the internal linear speed calculation program; the winding length calculation module 62 is the internal winding length calculation program; the winding weight calculation module 63 is the internal winding weight calculation program; the taper tension calculation module 64 is the internal Contains the taper tension calculation program.

The linear speed calculation module 61 executes the linear speed calculation module through the timer interrupt function of the controller 6 (PLC) according to the pulse signal transmitted by the displacement encoder module 2, and executes the linear speed calculation module 61 every 10ms, thereby calculating the amount of pulses received every 10ms. , and then calculate the length value of each pulse according to the diameter of the measuring wheel of the displacement encoder module 2 and the number of pulses per revolution of the displacement encoder module 2, and then calculate the movement of the material in 10ms according to the amount of pulses received in 10ms and the length value of each pulse The amount of material moving in 10ms is converted into the linear velocity value per minute, and the real-time linear velocity data is sent to the human-machine interface (HMI).

Linear velocity calculation: Linear velocity formula (1) C=πd; (2) LP=C/P; (3) ΔP=P0-P1; (4) V=LP*ΔP. In the above formula, C is the circumference, d is the diameter (the diameter of the measuring wheel installed on the encoder), π is the pi, LP is the length corresponding to one pulse, P is the number of pulses per revolution of the encoder (1000P/R), P0 is the real-time cumulative pulse output by the encoder, P1 is the cumulative pulse of the previous cycle, ΔP is the incremental pulse value in 100ms, and V is the linear velocity value in 100ms. The PLC executes the linear speed calculation subroutine every 100ms through the timed interrupt function instruction, subtracts the accumulated pulse number of the current execution cycle from the accumulated pulse number of the previous execution cycle, and then multiplies the increased pulse number in 100ms to the length corresponding to one pulse , to get a velocity value. The calculated linear velocity value is transmitted to the touch screen on the man-machine interface 7 for monitoring when the operator adjusts the velocity.

The winding length calculation module 62 obtains real-time length data according to the pulse signal transmitted by the displacement encoder module 2, the diameter of the measurement wheel of the displacement encoder module 2, and the number of pulses per revolution of the displacement encoder module 2, and sends the real-time length data to the receiver. Roll weight calculation module 63, taper tension calculation module 64 and human-machine interface (HMI).

The rewinding weight calculation module 63 calculates the real-time coiling weight according to the material density and material specification set by the human-machine interface 7 (HMI) and the length value calculated by the rewinding length calculation module 62 .

Rewinding length and weight calculation formula (1) C=πd; (2) L=C/p*P0; (3) v=abL; (4) m=ρv. In the above formula, C is the circumference, d is the diameter (the diameter of the measuring wheel installed on the encoder), π is the pi, P is the number of pulses per revolution of the encoder (1000P/R), and P0 is the real-time cumulative pulse output by the encoder , L is the winding length (real-time dynamic value), a is the product thickness, b is the product width, v is the product volume, ρ is the product density, and m is the winding weight (real-time dynamic value). The rewinding weight is transmitted to the touch screen on the man-machine interface 7, and the operator makes a reference data when cutting the product.

The taper tension calculation module 64 obtains the taper tension value according to the real-time length data, the basic tension value set by the human-machine interface 7 (HMI), the taper tension compensation rate, and the taper tension compensation length. Further, the taper tension calculation module 64 calculates the basic tension value, the taper tension compensation rate, and the taper tension compensation length according to the real-time length data calculated by the rewinding length calculation module 62, the parameter setting screen of the human-machine interface (HMI) 7, and the taper tension compensation length through the program calculation. In the initial coiling state (minimum coil diameter), it is coiled with a set maximum compensation value, and then according to the increase of coiling length, the coil diameter is also gradually increased, but the coiling tension is gradually decreased until the coiling length reaches the man-machine. Interface (HMI) 7 parameter setting screen sets the taper tension compensation length set value to stop the compensation, in the process to obtain the dynamic taper tension value, and send the real-time dynamic taper tension data to the human-machine interface (HMI) 7 monitor screen and communication module 1.

Taper tension calculation formula (1) 1-K*((L-L0)/L0)=C; (2) C×T=T0. Among them, K is the compensation coefficient, L is the real-time winding length, L0 is the compensation length, C is the taper tension coefficient, T is the set tension, T0 is the taper tension, the compensation coefficient (K) is set to 0.2, and the compensation length (L0) Set to 500m. In the existing taper tension calculation, the roll diameter is used to calculate, and the roll diameter is calculated to have fluctuations in the roll diameter value, because the product targeted by this technical solution is a film, the film thickness of each circle of single-sided stickers reaches 90um, and the diameter increment of each circle is There is 180um, the diameter increment of the double-sided film is 360um, and the film itself has no supporting strength. The technical solution is changed to length control.

Specifically, the human-machine interface 7 (HMI) is to measure the diameter of the wheel of the displacement encoder module 2, the number of pulses per revolution of the displacement encoder module 2, the material density, the material width, the material thickness, the basic tension value, the taper tension compensation rate, The external input parameters such as taper tension compensation length are transmitted to the controller 6 (PLC), and the coiling length calculated by the coiling length calculation module 62 and the coiling weight calculated by the coiling weight calculation module 63 are received by the controller 6 (PLC). The weight, the linear speed value calculated by the linear speed calculation module 61, the dynamic real-time value of the taper tension value calculated by the taper tension calculation module 64 and the 20 groups of historical coiling length values are displayed.

That is to say, the human-machine interface 7 (HMI) includes a monitoring screen, a historical record screen, and a parameter setting screen, wherein the monitoring screen includes the current coiling length, the previous coiling length, the coiling weight, the real-time value of the taper tension, and the material specification. and other data monitoring functions. The history record screen is to store and record the data of the first 20 lamination rolls wound up, and store 20 sets of data in a stacking manner. The parameter setting screen is to set the external input parameters such as the diameter of the measuring wheel of the displacement encoder 2, the number of pulses per revolution of the displacement encoder module 2, the material density, the material width, the material thickness, the basic tension value, the taper tension compensation rate, and the taper tension compensation length. to the controller (PLC). Further, the rewinding length calculation module 62 also includes a rewinding length recording function, which stores the length data of the first 20 film-coated rolls in consecutive 20-word storage addresses, and stores 20 groups of data in a stacking manner. . By cutting the signal condition of the zero sensor 3, a new length data of the lamination roll will be generated for each cut, and then the new length data will be stored in the No. 1 storage bit, and the original No. 1 storage bit data will be transferred to the No. 2 storage bit. By analogy, when the value reaches the last record data overflow, the last data will be moved out of the record storage area, and more coil data records can be defined as required.

The communication module 1 is to use the dynamic taper tension value calculated by the taper tension calculation module 64 to establish a communication connection between the controller (PLC) 6 and the winder inverter through the rs485 communication method, and to transmit the dynamic taper tension in the Modbus protocol RTU transmission mode. The data is sent to the winder frequency converter 4 to change the torque setting value of the frequency converter in real time, thereby controlling the torque output by the winder 5, and realizing the taper tension control to wind up the laminated board.

Specifically, the principle of the present invention is to use the displacement encoder module 4 to detect the coiling length of the film-coated board, the displacement encoder module 4 transmits the detected data to the controller 6, the controller 6 calculates the taper tension value, and the communication module 1 The taper tension value is sent to the inverter module 4, and the torque output value of the inverter is changed, so as to control the output torque of the coiler, and realize the taper tension control to coil the laminated board, with high reliability.

The same displacement encoder pulse signal can be used for both linear speed calculation and coiling length measurement, and the data is processed independently of each other according to different module functions.

In addition, the rewinding length calculation module 62 written by PLC instructions realizes the rewinding length history recording function. Mainly through the signal condition of the proximity switch, each cutting will generate a new length data of the lamination roll, and then the new length data will be stored in the No. 1 storage bit, the original No. 1 storage bit data will be transferred to the No. 2 storage bit, in turn By analogy, the value overflows to the last record data, and the last data is moved out of the record storage area.

Control method: 1. Fix the displacement encoder module 4 on the drive roller 8, so that it can measure the displacement of the laminated board synchronously, and obtain the pulse signal of the displacement; 2. According to the pulse signal transmitted by the displacement encoder module 2, control the The linear speed calculation module is executed by the timer interrupt function of the PLC 6 (PLC), and the linear speed calculation module 61 is executed every 10ms, so as to calculate the amount of pulses received every 10ms, and then the diameter of the wheel and the displacement encoder module are measured according to the displacement encoder module 2. 2 Calculate the length value of each pulse according to the number of pulses per revolution, then calculate the moving amount of 10ms material according to the amount of pulses received in 10ms and the length value of each pulse, and then convert the moving amount of 10ms material into the linear velocity value per minute , and send the real-time linear velocity data to the human-machine interface (HMI); three, according to the pulse signal transmitted by the displacement encoder module 2, the diameter of the measurement wheel of the displacement encoder module 2, and the number of pulses per revolution of the displacement encoder module 2 to obtain Real-time length data, and send the real-time length data to the winding weight calculation module 63, the taper tension calculation module 64 and the human-machine interface (HMI); 4. The material density and material specifications set according to the human-machine interface 7 (HMI) And the length value that the rewinding length calculating module 62 calculates, calculates the real-time weight of coiling; Five, according to the real-time length data that the rewinding length calculating module 62 calculates, the parameter setting screen setting of the man-machine interface (HMI) 7 The basic tension value and taper tension compensation rate. The taper tension compensation length is calculated by the program. In the initial coiling state (minimum coil diameter), it is coiled with a set maximum compensation value, and then according to the increase of the coiling length, the coil diameter is also gradually increased, but the coiling tension is gradually decreased. Compensation will not stop until the coiling length reaches the set value of the taper tension compensation length set on the HMI 7 parameter setting screen. During this process, the dynamic taper tension value will be obtained, and the real-time dynamic taper tension data will be sent to The monitoring screen of the human-machine interface (HMI) 7 and the communication module 1; 6. The communication module 1 is the dynamic taper tension value calculated by the taper tension calculation module 64, and connects the controller (PLC) 6 and the inverter module through the rs485 communication method. The communication connection established by 4 sends the dynamic taper tension data to the inverter module 4 in the Modbus protocol RTU transmission mode to change the torque setting value of the inverter in real time, thereby controlling the torque output by the winder 5 and realizing the taper tension control coil. Take the laminated board.

On the basis of the above scheme, if the various changes or deformations of the present invention do not depart from the spirit and scope of the present invention, if these changes and deformations belong to the claims of the present invention and the equivalent technical scope, the present invention also intends to include these Alterations and deformations.

Claims (10)

1. The utility model provides a tapering tension control system that tectorial membrane board was batched which characterized in that: the film coating plate coiling length detection device comprises a coiling machine (5), a frequency converter module (4) for controlling the torque of the coiling machine (5), a displacement encoder module (2) for detecting the coiling length of a film coating plate, a human-computer interface (7), a controller (6) and a communication module (1), wherein the human-computer interface (7), the displacement encoder module (2) and the communication module (1) are electrically connected with the controller (6), the input end of the frequency converter module (4) is electrically connected with the communication module (1), and the output end of the frequency converter module (4) is electrically connected with the coiling machine (5).

2. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the controller (6) is a PLC.

3. A system for controlling taper tension in roll-up of mulch applicator according to claim 2, wherein: the laminating plate cutting device is characterized by further comprising a proximity switch (3) used for controlling the displacement encoder module (2) to clear the pulse accumulated value, the proximity switch (3) is arranged above the laminating plate cutting device, and the controller (6) is electrically connected with the proximity switch (3).

4. A system for controlling taper tension in roll-up of mulch applicator according to claim 2, wherein: the PLC is Siemens S7-200 SMAR.

5. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the displacement encoder module (2) is arranged on a driving roller (8) on the film laminating plate production line.

6. A system for controlling taper tension of film laminate reeling according to claim 5, wherein: it still includes backup pad (12), the side of backup pad (12) one end be equipped with solid fixed ring (9), solid fixed ring (9) cover establish on driving roller (8), displacement encoder module (2) establish on support frame (8) other end.

7. A system for controlling taper tension of film laminate reeling according to claim 6, wherein: the outer circumference of the fixing ring (9) is provided with at least two fixing holes (11), and the driving roller (8) is provided with a mounting hole corresponding to the fixing holes (11).

8. A system for controlling taper tension of film laminate reeling according to claim 6, wherein: the fixing ring (9) and the displacement encoder module (2) are respectively positioned on two side surfaces of the supporting plate (12).

9. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the communication module (1) adopts an rs485 communication mode.

10. The control method of the taper tension control system for film laminating plate reeling according to claims 1 to 9, characterized in that: it comprises the following steps:

firstly, fixing a displacement encoder module (4) on a driving roller (8) to synchronously measure the displacement of the film coating plate and obtain a pulse signal of the displacement;

secondly, a linear velocity calculation module is executed through a controller (6) timing interrupt function according to a pulse signal transmitted by a displacement encoder module (2), the linear velocity calculation module (61) is executed every 10ms, so that the pulse quantity received every 10ms is calculated, then the length value of each pulse is calculated according to the diameter of a measuring wheel of the displacement encoder module (2) and the number of pulses of each circle of the displacement encoder module (2), then the moving amount of a 10ms material is calculated according to the pulse quantity received every 10ms and the length value of each pulse, then the moving amount of the 10ms material is converted into a linear velocity value per minute, and real-time linear velocity data is transmitted to a human-computer interface (7);

acquiring real-time length data according to the pulse signals transmitted by the displacement encoder module (2), the diameter of a measuring wheel of the displacement encoder module (2) and the number of pulses per circle of the displacement encoder module (2), and transmitting the real-time length data to the rolling weight calculation module (63), the taper tension calculation module (64) and the human-computer interface (7);

fourthly, calculating the real-time coiling weight according to the material density and the material specification set by the human-computer interface (7) and the length value calculated by the coiling length calculation module (62);

fifthly, setting a basic tension value and a taper tension compensation rate set by a picture according to the real-time length data calculated by the rolling length calculation module (62) and the parameters of the human-computer interface (7), and sending the real-time dynamic taper tension data to a monitoring picture of the human-computer interface (7) and the communication module (1);

and sixthly, the dynamic taper tension value calculated by the taper tension calculation module (64) is connected with the controller (6) and the frequency converter module (4) in a communication mode rs485, and dynamic taper tension data are sent to the frequency converter module (4) in a Modbus protocol RTU transmission mode to change the set value of the torque of the frequency converter in real time, so that the torque output by the winding machine (5) is controlled, and the coated plate is wound and taken by taper tension control.

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