Jetobond answers the question today: problems encountered in the basic operation of SMT placement machines. Here are some common SMT mounter operation problems:
1. Position offset.
1. The reason for the PCB board.
The curvature of the PCB board exceeds the allowable range of the equipment;
The support height is inconsistent, and the PCB circuit board support is uneven;
Poor flatness of the workbench support platform;
The circuit board wiring accuracy is low.
Second, the component is missing.
Program data device error;
The suction pressure of the placement nozzle is too low;
There is a mismatch between the blowing timing and the placement should be lowered timing;
Attitude detection sensor is defective, reference equipment is wrong;
Cleaning and maintenance of reflectors and optical identification cameras.
3. The pickup is not normal.
The tape specification does not match the feeder specification;
The vacuum pump is not working or the suction pressure of the nozzle is too low and too low;
The plastic hot press belt taped at the pickup position is not peeled off, and the plastic hot press belt is not pulled up normally;
The nozzle is moved vertically to a sluggish system
The placement speed of the placement head is selected incorrectly;
The feeder is not firmly installed, the feeder thimble movement is not smooth, the quick opener and the pressure belt are poor.
Fourth, the pick-up posture is poor.
Poor adjustment of vacuum suction air pressure;
The nozzle vertical motion system is sluggish;
The nozzle drop time is not synchronized with the suction time;
The initial value of the suction piece height or element thickness is set incorrectly, and the distance between the suction nozzle and the supply platform at the low point is incorrect
The tape packaging specification is poor, and the components are shaking in the mounting tape.
The above is the introduction of the problems encountered in the basic operation of the SMT placement machine, I hope it will help you!