A synchronous control method for wrapping speed of wrapping machine

Abstract

The present application relates to the technical field of wrapping machine wrapping, and discloses a wrapping machine wrapping speed synchronous control method, including the following steps: Step 1, data collection: through the PLC controller, to collect the wrapping speed data of the wrapping machine and the traction speed data of the wrapping machine winding wire in real time, and remotely transmit the data to the local computer for storage; Step 2, adjust the parameters: after the collected data is analyzed and processed by the computer, the speed of wrapping and the traction speed will be controlled to make corresponding parameter adjustments according to the results of the analysis and processing; Step 3, wrapping speed control operation: through the PLC controller, the speed data of the wrapping machine wrapping, the traction speed of the wrapping machine winding wire and the traction length are repeatedly controlled online to ensure the accuracy of the operation; Step 4, self-synchronous repair. Even if the traction speed of the winding wire changes, the wrapping speed will change accordingly, so as to keep the wrapping pitch stable.

Description

Technical Field

[0001] The present application relates to the technical field of synchronous control of the wrapping speed of a wrapping machine, and in particular to a synchronous control method of the wrapping speed of a wrapping machine. Background Art

[0002] The wrapping machine is divided into single-layer, double-layer and triple-layer wrapping. It wraps mica tape, cotton paper tape, aluminum foil, polyester film, etc. on the core wire through a rotating turntable. It is mainly used for wrapping the insulated core wires of electric wires, power cables, control cables, optical cables, etc.

[0003] In the existing winding wire wrapping technology, the commonly used method for wrapping machines to control the wrapping pitch is the master-slave synchronous control method. The parallel proportional synchronous control method is that after the master controller receives the winding wire traction speed, wrapping pitch and other parameters, it calculates the corresponding traction motor speed and wrapping motor speed, and sends them to the traction speed controller and the wrapping speed controller respectively. When the traction speed and the wrapping speed can be kept stable, the wrapping pitch can be kept stable; the wrapping speed control is less subject to interference, and when the servo motor drive is adopted, it is easy to achieve a stable wrapping speed, but the mechanical transmission of the winding wire traction part is relatively complex, and it is difficult to keep the traction speed stable, resulting in uneven wrapping pitch; and the master-slave synchronous control method can be implemented using various current motion controllers (motion control unit, motion control card), but in fact, even if advanced motion controllers are used for control, the wrapping effect of many wrapping machines is not good. The reason for this phenomenon is that the winding wire traction mechanism is complex, and resonance is generated during the traction process, so that the traction speed also changes periodically, resulting in spacing between the wrapping tapes, too high a defective rate or too high a wrapping margin, resulting in excessive production costs.

[0004] Therefore, the present invention proposes a method for synchronously controlling the wrapping speed of a wrapping machine to solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the problem in the prior art that the commonly used method for controlling the winding pitch of a wrapping machine in the existing winding wire wrapping technology is a master-slave synchronous control method, which can be implemented using various current motion controllers (motion control unit, motion control card). In fact, even if advanced motion controllers are used for control, the wrapping effect of many wrapping machines is not good. The reason for this phenomenon is that the winding wire traction mechanism is complicated, and resonance is generated during the traction process, which causes the traction speed to change periodically, resulting in spacing between the wrapping tapes, too high a defective rate or too high a wrapping margin, resulting in excessively high production costs. The present application provides a wrapping machine wrapping speed synchronous control method.

[0006] The present application provides a method for synchronously controlling the wrapping speed of a wrapping machine using the following technical solution:

[0007] A method for synchronously controlling the wrapping speed of a wrapping machine comprises the following steps:

[0008] Step 1: Collect data: Use the PLC controller to collect the speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine in real time, and transmit the data remotely to the local computer for storage;

[0009] Step 2: Adjust parameters: After analyzing and processing the collected data through the computer, the speed of wrapping and the speed of traction will be adjusted accordingly according to the results of the analysis and processing;

[0010] Step 3: Control operation of wrapping speed: The PLC controller is used to repeatedly perform online control operation on the wrapping speed data of the wrapping machine, the pulling speed of the winding wire of the wrapping machine, and the pulling length to ensure the accuracy of the operation;

[0011] Step 4: Self-synchronous repair: The PLC controller performs online synchronous repair and adjustment on the wrapping speed of the wrapping machine based on the results of multiple calculations, thereby controlling the wrapping speed to achieve synchronization.

[0012] Preferably, in step 1, the wrapping speed of the wrapping machine is the main speed, and the traction speed of the winding wire of the wrapping machine is the slave speed. The speed setting comes from the voltage of the speed setting input terminal V-REF, and the proportional relationship between the main speed and the slave speed is determined by the parameter setting of the PLC controller and the wrapping machine.

[0013] Preferably, in step 1, after the PLC artificial intelligence device collects data, the data can be transmitted through any network method including 5G, WIFI or Ethernet.

[0014] Preferably, in step 2, the wrapping speed and the pulling speed are adjusted accordingly. The specific method is that the delay time of the delay link is equal to the resonance period L, the given filter time constant T1 is equal to 0.3-0.5L, and the low-pass filter time constant T2 is equal to 0.5-0.7L.

[0015] Preferably, the driving motor of the wrapping machine is a servo motor.

[0016] Preferably, in step three, the specific method in which the PLC controller repeatedly calculates the speed data of the wrapping machine, the traction speed of the winding wire of the wrapping machine, and the traction length is:

[0017] a. Process the collected data of the pulling speed and the pulling length of the winding wire of the wrapping machine, and set the processing time to t1; and calculate the wrapping speed of the wrapping machine and the feedback value of the wrapping speed;

[0018] b. Calculate the deviation value e(k) of the wrapping speed;

[0019] c. Calculate the output value u1(k) of the PLC controller.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The synchronous control method for the wrapping speed of the wrapping machine mainly adopts a master-slave synchronous control method to control the synchronization of the wrapping speed and the traction speed. When the traction speed fluctuates periodically, after analyzing and processing the wrapping speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine, the corresponding parameter adjustment is made to the wrapping speed and the traction speed, and the wrapping speed data of the wrapping machine, the traction speed of the winding wire of the wrapping machine and the traction length are repeatedly controlled online for multiple times to ensure the accuracy of the calculation, so that the wrapping speed can track the traction speed well. Even if the traction speed of the winding wire changes, the wrapping speed will be changed accordingly to keep the wrapping pitch stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a diagram of the method steps of the present invention. DETAILED DESCRIPTION

[0023] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Example 1

[0025] A method for synchronously controlling the wrapping speed of a wrapping machine comprises the following steps:

[0026] Step 1. Collect data: Use the PLC controller to collect the speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine in real time, and transmit the data to the local computer through the 5G network for storage. The wrapping speed of the wrapping machine is the main speed, and the traction speed of the winding wire of the wrapping machine is the slave speed. The speed setting comes from the voltage of the speed setting input terminal V-REF. The proportional relationship between the main speed and the slave speed is determined by the parameter setting of the PLC controller and the wrapping machine.

[0027] Step 2, adjust parameters: after the collected data is analyzed and processed by computer, the speed of wrapping and the speed of traction will be adjusted accordingly according to the results of analysis and processing. The specific adjustment method is that the delay time of the delay link is equal to the resonance period L, the given filter time constant T1 is equal to 0.3L, and the low-pass filter time constant T2 is equal to 0.5L.

[0028] Step 3, wrapping speed control operation: The PLC controller is used to repeatedly perform online control operations on the wrapping speed data of the wrapping machine, the traction speed of the wrapping machine winding wire, and the traction length. The specific method is: a. Process the collected traction speed and traction length data of the wrapping machine winding wire, and the processing time is set to t1; and calculate the wrapping speed of the wrapping machine and the feedback value of the wrapping speed; b. Calculate the deviation value e(k) of the wrapping speed; c. Calculate the output value u1(k) of the PLC controller.

[0029] Ensure the accuracy of calculations;

[0030] Step 4: Self-synchronous repair: The PLC controller performs online synchronous repair and adjustment on the wrapping speed of the wrapping machine based on the results of multiple calculations, thereby controlling the wrapping speed to achieve synchronization.

[0031] Example 2

[0032] A method for synchronously controlling the wrapping speed of a wrapping machine comprises the following steps:

[0033] Step 1, data collection: Through the PLC controller, the speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine are collected in real time, and the data are transmitted to the local computer through the WIFI network for storage. The wrapping speed of the wrapping machine is the main speed, and the traction speed of the winding wire of the wrapping machine is the slave speed. The speed setting comes from the voltage of the speed setting input terminal V-REF. The proportional relationship between the main speed and the slave speed is determined by the parameter setting of the PLC controller and the wrapping machine.

[0034] Step 2, adjust parameters: after the collected data is analyzed and processed by computer, the speed of wrapping and the speed of traction will be adjusted accordingly according to the results of analysis and processing. The specific adjustment method is that the delay time of the delay link is equal to the resonance period L, the given filter time constant T1 is equal to 0.4L, and the low-pass filter time constant T2 is equal to 0.6L.

[0035] Step 3, wrapping speed control operation: The PLC controller is used to repeatedly perform online control operations on the wrapping speed data of the wrapping machine, the traction speed of the wrapping machine winding wire, and the traction length. The specific method is: a. Process the collected traction speed and traction length data of the wrapping machine winding wire, and the processing time is set to t1; and calculate the wrapping speed of the wrapping machine and the feedback value of the wrapping speed; b. Calculate the deviation value e(k) of the wrapping speed; c. Calculate the output value u1(k) of the PLC controller.

[0036] Ensure the accuracy of calculations;

[0037] Step 4: Self-synchronous repair: The PLC controller performs online synchronous repair and adjustment on the wrapping speed of the wrapping machine based on the results of multiple calculations, thereby controlling the wrapping speed to achieve synchronization.

[0038] Example 3

[0039] A method for synchronously controlling the wrapping speed of a wrapping machine comprises the following steps:

[0040] Step 1, data collection: Through the PLC controller, the speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine are collected in real time, and the data are transmitted to the local computer through the Ethernet network for storage. The wrapping speed of the wrapping machine is the main speed, and the traction speed of the winding wire of the wrapping machine is the slave speed. The speed setting comes from the voltage of the speed setting input terminal V-REF. The proportional relationship between the main speed and the slave speed is determined by the parameter setting of the PLC controller and the wrapping machine.

[0041] Step 2: Adjust parameters: After analyzing and processing the collected data through the computer, the speed of winding and pulling will be controlled to make appropriate parameter adjustments according to the results of the analysis and processing. The specific adjustment method is that the delay time of the delay link is equal to the resonance period L, the given filter time constant T1 is equal to 0.5L, and the low-pass filter time constant T2 is equal to 0.7L.

[0042] Step 3, wrapping speed control operation: The PLC controller is used to repeatedly perform online control operations on the wrapping speed data of the wrapping machine, the traction speed of the wrapping machine winding wire, and the traction length. The specific method is: a. Process the collected traction speed and traction length data of the wrapping machine winding wire, and the processing time is set to t1; and calculate the wrapping speed of the wrapping machine and the feedback value of the wrapping speed; b. Calculate the deviation value e(k) of the wrapping speed; c. Calculate the output value u1(k) of the PLC controller.

[0043] Ensure the accuracy of calculations;

[0044] Step 4: Self-synchronous repair: The PLC controller performs online synchronous repair and adjustment on the wrapping speed of the wrapping machine based on the results of multiple calculations, thereby controlling the wrapping speed to achieve synchronization.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention;

[0046] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0047] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for synchronously controlling the wrapping speed of a wrapping machine, characterized in that: The following steps are involved: Step 1: Collect data: Use the PLC controller to collect the speed data of the wrapping machine and the traction speed data of the winding wire of the wrapping machine in real time, and transmit the data remotely to the local computer for storage; Step 2: Adjust parameters: After analyzing and processing the collected data through the computer, the speed of wrapping and the speed of traction will be adjusted accordingly according to the results of the analysis and processing; Step 3: Control operation of wrapping speed: The PLC controller is used to repeatedly perform online control operation on the wrapping speed data of the wrapping machine, the pulling speed of the winding wire of the wrapping machine, and the pulling length to ensure the accuracy of the operation; Step 4: Self-synchronous repair: The PLC controller performs online synchronous repair and adjustment on the wrapping speed of the wrapping machine based on the results of multiple calculations, thereby controlling the wrapping speed to achieve synchronization.

2. A method for synchronously controlling the wrapping speed of a wrapping machine according to claim 1, characterized in that: In step 1, the wrapping speed of the wrapping machine is the main speed, and the traction speed of the winding wire of the wrapping machine is the slave speed. The speed setting comes from the voltage of the speed setting input terminal V-REF. The proportional relationship between the main speed and the slave speed is determined by the parameter setting of the PLC controller and the wrapping machine.

3. The method for synchronously controlling the wrapping speed of a wrapping machine according to claim 1, characterized in that: In step 1, after the PLC artificial intelligence device collects data, it can transmit the data through any network method including 5G, WIFI or Ethernet.

4. The method for synchronously controlling the wrapping speed of a wrapping machine according to claim 1, characterized in that: In step 2, the wrapping speed and the pulling speed are adjusted accordingly. The specific method is that the delay time of the delay link is equal to the resonance period L, the given filter time constant T1 is equal to 0.3-0.5L, and the low-pass filter time constant T2 is equal to 0.5-0.7L.

5. The method for synchronously controlling the wrapping speed of a wrapping machine according to claim 1, characterized in that: The driving motor of the wrapping machine is a servo motor.

6. The method for synchronously controlling the wrapping speed of a wrapping machine according to claim 1, characterized in that: In step 3, the specific method in which the PLC controller repeatedly calculates the speed data of the wrapping machine, the pulling speed of the winding wire of the wrapping machine, and the pulling length is: a. Process the collected data of the pulling speed and the pulling length of the winding wire of the wrapping machine, and set the processing time to t1; and calculate the wrapping speed of the wrapping machine and the feedback value of the wrapping speed; b. Calculate the deviation value e(k) of the wrapping speed; c. Calculate the output value u1(k) of the PLC controller.

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