The Principle of The Control System for The Transparent Film Three-dimensional Packaging Machine

The control system principle of the transparent film three-dimensional packaging machine mainly involves electrical control, sensor monitoring, action execution and feedback regulation, etc. The following is a detailed explanation:

Electrical control core

The main control circuit: With the frequency converter and programmable logic controller (PLC) as the core, it is responsible for the command control of power output, the operation of the transmission mechanism and the action of the working actuator. The PLC coordinates the operation of each component through preset programs to achieve the automation of the packaging process.

Temperature control circuit: Composed of an intelligent temperature control meter, solid-state relay and thermocouple components, it ensures precise and controllable heat sealing temperature. The temperature control system adjusts through real-time feedback to keep the sealing temperature always within the range required by the process.

Sensor monitoring and feedback

Thin-film marking sensor: Continuously detects the position of color marks on the film to provide a reference signal for the tracking system. When a color mark offset is detected, the system automatically adjusts the speed of the tracking motor.

Mechanical tracking microswitch: It monitors the position of mechanical components in real time and sends the signal from the thin-film marking sensor to the PLC for calculation together. The PLC drives the tracking motor by outputting control signals (such as Y6 forward tracking and Y12 reverse tracking) to compensate for the production errors of packaging materials.

Actuator action control

Servo motor drive: The length of the film conveying is controlled by a servo motor, and the film length can be adjusted arbitrarily through closed-loop feedback. The system can quickly switch parameters according to packaging specifications to meet the packaging requirements of products of different sizes.

Pneumatic device coordination: The cylinder and CAM mechanism work together to complete automatic feeding, wrapping, folding, heat sealing and other actions. The pressure of the pneumatic system is stabilized within the range of 0.45-0.5MPa to ensure precise and reliable actions during the packaging process.

Dynamic regulation and protection mechanism

Variable frequency speed control: By using high-performance frequency converters to reduce chain drive, the stability of machine operation is enhanced and noise is lowered. The system can automatically adjust the motor speed according to the load changes, achieving efficient and energy-saving operation.

Abnormal handling mechanism: When the tracking system fails to meet the technical requirements within the preset number of times, the equipment will automatically shut down and trigger an alarm. This mechanism can effectively prevent the generation of waste products and ensure the stability of packaging quality.