Film casting machine speed control system and control method thereof
A technology of speed control and casting machine, which is applied in the direction of coiling strips, thin material processing, transportation and packaging, etc. It can solve the problem of slow response speed of the tension control system, the system cannot respond immediately, and the speed of the winding mechanism is unstable. and other problems, to achieve the effect of not being prone to electromagnetic interference, stable speed, and small speed control error
Pending Publication Date: 2019-06-07
QUANZHOU NUODA MACHINERY CO LTD
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Problems solved by technology
Generally, the formed film is rewound by the rewinding mechanism placed in the casting machine, and the tension force during the movement of the film is maintained by the traction mechanism. In the existing casting machine, the tension sensor is used to directly detect the tension, and the detection The signal is fed back to the tension controller to realize the control of the film tension. The control of the film tension must affect the speed of the winding mechanism. When the tension control system in a balanced state is strongly disturbed, the system cannot respond immediately. The tension control The system response speed is slow, and the speed of the winding mechanism is unstable, which will directly affect the production quality of the film
Method used
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[0018] In order to further understand the structure, features and other purposes of the present invention, the attached preferred embodiments are now described in detail with accompanying drawings as follows. The embodiments described in the accompanying drawings are only used to illustrate the technical solutions of the present invention and are not limiting this invention.
[0019] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of the speed control system of the tape casting machine of the present invention; the speed control system of the tape casting machine of the present invention includes a traction motor 1 for controlling the torque variation of the traction mechanism 101, and a traction motor 1 for controlling the winding speed of the winding mechanism 102 A winding motor 2, a rotary encoder 3, a PID controller 4, a traction servo driver 5, a winding servo driver 6 and a PLC controller 7 for measuring the length of each turn of the film in t...
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The invention provides a film casting machine speed control system and a control method thereof. The speed control system comprises a traction motor, a winding motor, a rotary encoder, a PID controller, a traction servo driver, a winding servo driver and a PLC. The traction servo driver controls torque of the traction motor according to the input quantity of the PLC. The PID controller calculatesthe torque compensation quantity of the traction motor according to the variation of the PLC and the torque of the traction motor and outputs the torque compensation quantity to the traction servo driver. The winding servo motor controls the rotating speed of the winding motor according to the input quantity of the PLC. The PID controller calculates the rotating speed compensation quantity of thewinding motor according to the calculated torque compensation quantity and the film passing length measured by the rotary encoder and outputs the rotating speed compensation quantity to the winding servo driver. The film casting machine speed control system realizes accurate speed control over a winding mechanism according to torque variation of a traction mechanism and is small in control error and suitable for high and low-speed change working conditions.
Description
technical field [0001] The invention relates to the technical field of tape casting machines, in particular to a speed control system and a control method of the tape casting machine. Background technique [0002] The casting machine is a forming equipment that can prepare the slurry into a sheet film with a uniform thickness and a certain width. It is suitable for the experiment and production of film forming. Generally, the formed film is rewound by the rewinding mechanism placed in the casting machine, and the tension force during the movement of the film is maintained by the traction mechanism. In the existing casting machine, the tension sensor is used to directly detect the tension, and the detection The signal is fed back to the tension controller to realize the control of the film tension. The control of the film tension must affect the speed of the winding mechanism. When the tension control system in a balanced state is strongly disturbed, the system cannot respond...
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Login to View More IPC IPC(8): B65H23/198B29C41/52
Inventor 方全财
Owner QUANZHOU NUODA MACHINERY CO LTD