Through the experience of some first-line production workers and skilled engineers, it is learned how to timely remove common faults of gravure printing presses. Common fault sweeps for gravure presses are generally:
1. The gig-printing machine's startup failure mainly includes single-pole and bipolar tripping. It is necessary to check the switch position of the main motor control cabinet of the gravure printing machine:
1 If the capacity of the main motor control cabinet is too small, such a situation will occur. Adjusting the orientation of the switch and increasing the capacity of the main motor control cabinet can solve the switch trip phenomenon.
2 Check the control power cord of the color set disc valve, is there a short circuit or the circuit board burned out, if there is a need to replace the color set disc valve in time.
2. The communication cable of the man-machine interface of the gravure printing machine is disturbed. After the gravure printing machine is turned on, the communication cable is disturbed, which makes it impossible to debug. The exact connection is to peel off the cable. Remove the aluminum film from the inner layer and close the shield to the bus connector.
3. Quickly adjust the gravure printing machine synchronization. Usually, the electronic parameters of the AB axis machine are the same, and can be adjusted synchronously with any axis.
4. When the main body of the gravure printing machine is started, the motor will vibrate violently. At this time, pay attention to the encoder of the drive motor to remove the fault.
5. DT950 three-color printing press presents a fault, can not actively overprint, it is possible that the three-color overprinting of the optical head to the relay box of the optical cable inserted in the relay box. Open the cover of the DT950 press, carefully look at the top of each terminal, and fix the loose ends to eliminate dangerous faults.
6. The overprinting version of the gravure printing machine confirms whether the printing data is appropriate, whether the oven temperature is suitable, whether the parallelism of the gravure printing machine unit meets the requirements, and whether the layout air blowing equipment is perfect.
5. Accurate adjustment of the oven wind is essential for the quality of the improved products. In practice, master each link so that the wind and wind speeds are just right to ensure the quality of the printed products.
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