The use of servo motors in hot forming machines and cold forming machines mainly involves the configuration, control strategy and specific application methods of the servo system. The following is a detailed answer to how to use servo motors in the two forming machines:
Servo system configuration
1. Hardware selection
Servo motor: Select a servo motor that is suitable for the load characteristics and motion requirements of the forming machine, usually considering the motor's power, torque, speed and other parameters.
Servo drive: According to the model and performance requirements of the servo motor, select a matching servo drive to ensure that the motor can run stably and accurately.
Controller: Use a programmable logic controller (PLC) or a dedicated motion controller to implement complex motion control algorithms and logic control.
Sensor: Install position sensors (such as photoelectric encoders) and speed sensors to feedback the position and speed information of the motor in real time to achieve closed-loop control.
2. Communication interface
Bus communication: Such as CanOpen bus, Modbus TCP, etc., used to achieve high-speed and reliable communication between the controller and the servo drive.
IO interface: According to specific needs, configure the necessary input and output interfaces for signal exchange with external devices (such as molds, gas valves, etc.).
Control strategy
1. Motion control algorithm
PID control: Use proportional-integral-differential (PID) control algorithm to accurately control the position, speed and acceleration of the motor.
Feedforward control: Add feedforward control on the basis of PID control to improve the response speed and stability of the system.
Adaptive control: Automatically adjust the control parameters according to the actual operation of the system to adapt to different loads and working conditions.
2. Synchronous control
Multi-axis synchronous control: In the molding machine that requires multi-axis synchronous motion, a multi-axis synchronous control algorithm is used to ensure the coordinated motion between the axes.
Specific application methods
1. Thermoforming machine
Heating station: Control the temperature of the temperature controller PID through Modbus communication to achieve high-precision heating.
Molding station: The servo motor controls the upper and lower guide plates and stretching plates of the molding, and cooperates with the blowing valve, vacuum valve, etc. to realize plastic molding.
Punching, cutting, stacking station: The servo motor controls the punching, cutting and stacking actions to ensure processing accuracy and efficiency.
2. Cold forming machine
Uncoiling, leveling, cutting and welding: servo motor drives uncoiling machine, leveling machine and other equipment to realize continuous supply and preliminary processing of materials.
Servo feeding: servo motor accurately controls feeding speed and position to ensure the stability and accuracy of materials during cold bending.
Cold bending forming: servo motor drives cold bending machine for forming processing, and cooperates with rotary encoder to realize high-precision position control.
Fixed-length flying shear and unloading: servo motor controls fixed-length flying shear for precise cutting and delivers finished products to the designated position.
Precautions
Safety protection: During the selection, installation and commissioning of servo motors and drivers, safety protection measures such as overload protection and short circuit protection should be fully considered.
Maintenance: Regularly maintain servo motors and drivers, and check the wear and looseness of motor bearings, encoders, connecting wires and other components.
Debugging and optimization: Debug and optimize the servo system according to the actual operation conditions to ensure stable operation of the system and meet production requirements.
In summary, the use of servo motors in hot forming machines and cold forming machines requires comprehensive consideration of hardware selection, control strategy, and specific application methods.
By rationally configuring the servo system, adopting advanced control algorithms and synchronous control strategies, and paying attention to safety protection and maintenance, the high-precision, high-efficiency, and high-stability operation of the forming machine can be achieved.