System Operation of Vacuum Laminator
1. Close the 3QF, 1QF and 2QF circuit breakers, and the 1HL power light is on.
2. Close 1K, and 0KM is powered on to prepare for the motor.
3. Press the 2SB button, 1KM is powered on, 1M is powered on, the low pressure pump starts, and 2HL is on. Press the 1SB button, 1KM is powered off, and the low pressure pump stops. Press 1SB button, 2KM and 2M lose power, and the high-pressure pump stops running.
4. Press 3SB button, 2KM, 2M and 1YV are powered on, the high-pressure pump starts, and 3HL lights up.
5. Press 5SB button, 6KA and 2YV will be powered on, and the press will return after pressure relief. Press the 4SB button, 6KA and 2YV lose power, and the pressure relief return trip stops.
B. Automatic control operation of vacuum laminator: press 6SB button, 1KM and 2KM will be engaged, 1M and 2M will be powered on and started, high and low pressure pumps will inject oil into the oil cylinder together, when the pressure reaches the setting value of 1KP which is normally closed, (7-1) will be disconnected, 1KM will be released, and 1M will lose power. The low-pressure pump stops supplying oil.
When the oil supply and pressure from the high-pressure pump reach the pressure value set at 2KP, (3-21) t is on, 1KA is engaged, 3KA is powered on and self-locking, 2KM is released, 2M is powered off, and the pump is stopped. When the press enters the condition of pressure reporting, during the timing time, due to leakage and other reasons, the pressure regulating makes (3-27) connected, 2KA pulls in, and 2KM pulls in again, 2M is powered on, and the high-pressure pump supplies oil for pressure supplement.
When the pressure reaches 2KP high point (3-21), 1KA is switched on, 3KA is powered on (15-17) and off, 2KM is released, the pump is stopped, and pressure make-up is stopped. When 1KT is timed, 1KT (3-49) turns on 4KA , 2KT turns on, 4KA is self-locking, and the alarm is turned on. 2KT alarm is delayed, 5KA is self-locking, 5KA point (33-35. One limit cycle has ended.
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