How to control the cost submit the productivity in the SMT production process?

In the SMT production process, how to control the production cost improve the production efficiency is a matter of great concern to the manufacturers, which has a lot to do with the throwing rate of SMT Mounter. The following SMT Mounter manufacturers talk about the throwing problem of mounter. The so-called throwing refers to the SMT Mounter in the production of seed, after absorbing the material, it does stick, but throws the material to the throwing box other places, does absorb the material executes the above throwing action. In order to optimize the production efficiency reduce the cost, we must solve the problem of high throwing rate.

Main causes Countermeasures of throwing materials:

Cause 1: suction nozzle problem, suction nozzle deformation, blocking, damage, resulting in insufficient air pressure, air leakage, resulting in suction can afford, picking is correct, identification can pass throwing. Countermeasures: clean replace the suction nozzle;

Cause 2: recognition system problems, poor vision, unclean vision laser lens, interference recognition by sundries, improper selection of recognition light source insufficient intensity gray scale, possibly the recognition system is broken. Countermeasures: clean wipe the surface of recognition system, keep it clean free of sundries, adjust the intensity gray of light source, replace the parts of recognition system;

Cause 3: location problem, the reclaiming is in the center of the material, the reclaiming height is correct (generally 0.05mm lower pressure after encountering the part) resulting in the deviation, the reclaiming is correct, there is deviation, the identification is consistent with the corresponding data parameters, which is discarded as invalid material by the identification system. Countermeasures: adjust the position of reclaiming;

Cause 4: vacuum problem, insufficient air pressure, unsmooth vacuum gas pipe channel, blockage of vacuum channel by guide material, insufficient air pressure caused by vacuum leakage, unable to pick up the material falling on the way to paste after picking up. Countermeasures: adjust the pressure gradient to the required pressure value of the equipment (such as 0.5 ~ ~ 0.6MPa -- Yamaha Mounter), clean the air pressure pipe, repair the leakage gas path;

Cause 5: program problem. The component parameters in the edited program are set correctly, which are inconsistent with the physical size brightness of the incoming material, resulting in failure of recognition discarding. Countermeasures: modify component parameters search for component parameter settings;

Cause 6: the problem of incoming materials, irregular incoming materials, is unqualified products such as pin oxidation. Countermeasures: IQC shall conduct incoming inspection contact with component suppliers;

Cause 7: feeder problem, feeder position deformation, feeder feeding poor (feeder spine gear damaged, the feed belt hole is stuck on the spine gear of feeder, there is foreign matter under the feeder, the spring is aging, the electrical is poor), resulting in missing bad picking throwing, feeder damage. Countermeasures: adjust the feeder, clean the feeder platform, replace the damaged parts feeder; if there is a throwing phenomenon to be solved, you can first ask the SMT manufacturer's site personnel, then find out the problem directly according to the observation analysis, so as to more effectively find out the problem, solve it, improve the production efficiency, but more time-consuming SMT Mounter production.