Analysis of the abnormality of the SMT placement machine pickup:

(1) The tape size does not match the feeder specifications.

(2) The vacuum pump is not working or the suction pressure of the nozzle is too low.

(3) The plastic hot pressing belt that is taped at the picking position is not peeled off, and the plastic hot pressing belt is not pulled up normally.

(4) The vertical movement system of the nozzle is slow.

(5) The placement speed of the placement head is incorrectly selected.

(6) The feeder is not installed firmly, the feeder ejector pin is not moving smoothly, the quick opener and the pressure belt are bad.

(7) The paper cutter cannot cut the tape normally.

(8) The braid cannot rotate normally with the gear or the feeder does not run continuously.

(9) When the suction position is at the suction position, the suction nozzle is not at a low point, and the drop height is not in place or no action.

(10) The center axis of the nozzle at the take-up position does not coincide with the lead of the center axis of the feeder, and deviation occurs.

(11) The nozzle drop time is not synchronized with the suction time.

(12) Vibration in the feeding part

(13) Component thickness data device is incorrect.

(14) The initial value of the suction height is incorrect.


SMT placement machine randomness does not slap mainly refers to the nozzle at the low position of the patch is not installed, there are missing stickers. The main reasons for its occurrence are as follows:

(1) The warpage of the PCB board is beyond the allowable range of the device, the maximum upturn is 1.2MM, and the lower bend is 0.4MM.

(2) The height of the support pins is inconsistent or the flatness of the support platform is poor.

(3) The nozzle is stuck with the fluid or the nozzle is severely magnetized.

(4) L nozzle vertical motion system is slow to run.

(5) The blowing timing does not match the timing of the placement head.

(6) The amount of glue on the printed board is insufficient, the leak point or the machine pin is too long.

(7) The nozzle placement height is poor.

(8) The solenoid valve is poorly switched, and the blowing pressure is too small.

(9) When NG occurs in a nozzle, the STOPPER cylinder of the device is not working properly and is not reset in time.



SMT placement machine has a poor posture: it mainly refers to the appearance of slabs, slanting sheets, etc. The main reasons for its occurrence are as follows:

(1) Poor vacuum suction pressure adjustment.

(2) The vertical movement system of the nozzle is slow to run.

(3) The drop time of the nozzle is not synchronized with the suction time.

(4) The initial value of the suction piece height or the component thickness is set incorrectly, and the distance between the suction nozzle and the feeding platform is incorrect at the low point.

(5) The tape packaging specifications are poor, and the components are shaken in the mounting tape.

(6) The ejector pin movement is not smooth, the fast loader and the pressure belt are bad.

(7) The center axis of the feeder does not coincide with the vertical center axis of the nozzle, and the offset is too large.