1. Overview
aluminum packaging equipment, packaging machinery, as a primary model, with safety and high efficiency, high degree of automation and the advantages of high efficiency, packaging and food packaging in the pharmaceutical industry has a very wide range of applications, a very promising market.
previous aluminum packaging machinery control system using single frequency control, aluminum parts and packaging equipment machinery hard part is connected, through a complex gear drive of linkages. There machining complex, high precision, complicated installation, the Coupling big error, and long production cycle of the obvious shortcomings.
for single inverter control system of the original shortcomings, the control system uses an open two-frequency control, respectively, through the inverter part of the aluminum parts and packaging speed, through encoder feedback signal speed setting to ensure the machine s synchronous coordination, and achieve precise control. Schneider has shown in this series a good performance. Here are examples of the application and the specific realization.
2. System Description
1) process automatic packaging machine aluminum parts and packaging, mainly aluminum parts, the structure shown below:
Aluminum plastic packaging machine packing machine by the machine and the two aluminum parts. Completed for the following work: the end of feeding mode, heating, feeding products, aluminum version of cut, packaging machine stepper motor feeding, poor product the fields, feeding instructions, and packaging the final product. Single inverter control system for the original shortcomings, the control system uses an open two-frequency control mode
2) Control System:
Aluminum machine control system solution analysis:
the core of the control system of machine to ensure the coordination, synchronization action.
Machine aluminum machine work to the action as a benchmark, the touch screen to set the host s operating speed, aluminum motor speed according to the work setting. Aluminum shaft rotation for a week work cycle, PLC Acquisition spindle encoder synchronization control signal to control the end of the cylinder model, the shear cylinder, the feed cylinder in the set point and the spindle synchronization.
Aluminum shaft work week, packing machine spindle need to work two weeks for packing. Stepper motor work while feeding twice. Packing machine packing machine to the main axis of movement as the base, collecting packaging machine spindle on the incremental encoder signals to control a plug cylinder 1, the work of a plug cylinder 2.
Focus on integrated control of synchronous motors which work: PLC also collect aluminum machine and packing machine spindle encoder signals to the action as the base aluminum machine, using hand-written PID tuning algorithm, the analog output through the PLC control packaging machine speed. Setting the difference between the two encoders, synchronized movements.
aluminum base model 4-way control of heating temperature.
Aluminum base mold need to set the heat softening temperature, and then the end of the cylinder mold Stamping. Filling materials after forming shear, heat sealing. The machine need to control 3-way temperature: mold temperature, mold heating temperature, heat sealing temperature. Mixed by TWDALM3LT analog temperature signal acquisition module, PLC PID operation for precise control of the bottom mold temperature.
use of photoelectric detection devices to detect defective products, the instructions in the follow-up procedures to stop the feed, automatically removing defective products.
Aluminum packaging process, the feeder into the box to the manual and the packaging is an automatic process. Photoelectric detection devices to detect defective products if the use of PLC shift register function, stop the feeder and packaging material corresponding action, but without the defective products.
3) functions to achieve:
Control system uses a full range of Schneider products, host Twido programmable controller: TWDLCAA40DRF, temperature input, analog output mixed module TWDALM3LT, ATV31 Inverter, HMI touch screens.
Schneider TWDLCAA40DRF controller, built-in 20KHz 2 way and 1 way high-speed counting high-speed pulse output function, a powerful floating-point computing power of data, synchronized motion control performance in a good performance. While built-in PID function 14 Road to facilitate the temperature heating control.
Aluminum plastic packaging machine for the control requirements and process requirements analysis, the control system to achieve the following functions:
& # 61656; PLC sampling a two-way high-speed pulse signal encoder, control aluminum plastic machine, packing machine moves simultaneously.
& # 61656; according to the encoder to send a High-Speed sync pulse signal (PLS), touch to send material stepper motor synchronization.
& # 61656; Collection 3 Way PT100 temperature signal, after the end of TWIDO the PID control module operation temperature.
& # 61656; two analog output signals to control the aluminum motor inverter, packaging motor inverter.
veneer machine control system structure is as follows:
Schneider TWDLCAA40DRF controller, built-in 20KHz 2 way and 1 way high-speed counting high-speed pulse output function, a powerful floating-point computing power of data, synchronized motion control performance in a good performance. While built-in PID function 14 Road to facilitate the temperature heating control.
3. systematic summary <BR> automatic packaging machine aluminum Schneider overall control system solutions, Schneider family good compatibility and excellent performance makes control products become more simple, efficient and stable. Simple structure and high electrical stability for the user to create a higher value.