UV flatbed printer ink cartridge pressure control system
UV flatbed printer ink pressure system: the ink is equipment blood, and the ink supply must be stable. The ink supply system is composed of a main ink cartridge, a filter, an ink pump, a secondary ink cartridge, a valve body, and a nozzle. The ink supply system is individually controlled by PLC, with strong anti-interference ability; the system design and construction workload is small and easy to modify.
The following describes the list and design logic of the PLC circuit's I / O port in detail.
Main station (ink circuit module), the level signal of the main cartridge CMK is always on X0, X1, X2, X3, and the level signal of the main cartridge X4 is always on. Output signal, the ink return pump CMQKW corresponds to the ink return signals of the slave stations one-to-one with the slave stations Ｙ0, Ｙ1, Ｙ2, Ｙ3, and Ｙ4. The main cartridge ink shortage alarm CMZK outputs a buzzer alarm Z5, the main cartridge ink shortage alarm W outputs a buzzer alarm Ｙ6. Press the ink button for five seconds to pause once corresponding to the slave station Ｙ7, Ｙ10.
Slave 1 (ink head signal module). The X origin normally open signal corresponds to X0 in slave station 2 and the X end signal is X1; the Y origin X2 and Y end X3. The return ink cartridge signal CMKK is always on, and the return ink pump of the master station corresponds to the master station X4, X5, X6, X7, X10 one by one. After the backflow protection is triggered by the three X-point inputs, the system continues to maintain the trigger state. Only by removing the trigger cause and manually pressing the reset button can normal X11, X12, and X13 be restored. Anti-collision two left and right X points input. After the normally closed signal is triggered, the system continues to maintain the trigger state. Only by removing the trigger cause and manually pressing the reset button can normal X14 ~ X15 be restored.
When outputting a signal:
1. When no error is reported by the module, the ready light is on, and any one of the lights 2 and 3 is working, then the 1 light is off until the module returns to normal again.
2. Ink supply and ink return. After the reflow alarm is triggered, the system continues to maintain the trigger state. Only when the cause of the trigger is eliminated and the reset button is manually pressed can it return to normal (the reflow alarm ink supply and ink return share a signal and a lamp).
3. After the anti-collision alarm is triggered, the system continues to maintain the trigger state. Only by removing the trigger cause and manually pressing the reset button can the system return to normal.
Slave 2 (sensor signal module). During input, 6 buttons of emergency stop button, normally closed signals X0, X1, X2, X3, X4, X5, reset button 1 (reset all abnormal conditions, remove the trigger cause), and alarm X6, press the ink button input Two correspond to X7 and X10 with the master station. Output signal, X origin trigger corresponds to slaves Z0, Y1, Y2, Y3, X end trigger, Y origin trigger, Y end trigger. The emergency stop triggers the alarm signal and continues to maintain the trigger state after the trigger. Only by removing the trigger cause and manually pressing the reset button, can it return to normal (buzzer, two sets of Ｙ outputs Ｙ4, Ｙ5).