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Simple fully automatic printing machine
When using an on-line printer, how to deal with the printing offset caused by the SMT solder paste? What are the causes? Poor identification of anchor points causes printing deviation, so it is necessary to debug the visual system of the press or re-write the anchor point coordinates. Coordinate offset causes solder paste printing offset, need to adjust the coordinates. The fixing loose of the steel mesh causes the solder paste printing deviation. Check the fixing of the steel mesh. When the camera meets the PCB board, the solder paste printing deviation is caused by snowflakes during the identification of the fixed point. It is necessary to arrange and tie up the signal cable, check whether the connection cable of the vision system processing box is loose, and the solder paste printing deviation is caused by the instability of the stop board of the camera lens when replacing the PCB board. It is necessary to check whether the positioning fixture, tray fixture and vacuum of the PCB can absorb the PCB. How to deal with it: Observe the recognition of the MARK point, and whether the recognition center is in the center of the MARK point; Observe the width of the conveyor belt, the track width should not be too wide, otherwise the P, C and B plates can not be clamped; Observe whether the laser steel mesh is fixed well and try to push it manually; PCB board thickness is set properly, this should be checked first; Check whether the clamping device of the steel mesh correction system is normal (this should be confirmed in the self-diagnosis); Switch the control box with another one, sometimes there is a problem with the slot on the back of the control box; Check that the bearings in front of the repair motor are not worn or the system software or hard disk is abnormal, and reinstall the system or replace the motor.
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