Improve the quality of LED solid-crystal several steps – Mini 4D Cinema System M
A strict inspection station LED solid crystal raw materials
1. Chipset: pollution, mainly for the pad, chip breakage, chip cutting sizes, chip cutting tilt.
Preventive measures: strict control of incoming inspection, identify problems require suppliers to improve.
2. Stents: mainly for the deviation size and C size too large, frame color for?, Frame deformation.
Incoming suppliers are bad, it should inform the suppliers to improve and strictly control the feed.
3. Silver plastic: silver viscosity mainly as poor use for more than, storage conditions, and thawing conditions were discrepancies with the actual standard.
Viscosity for the silver, the general assessment commissioned by the project will not have too many problems, but not that the kind of silver plastic is the best, if found to have defects and notify the project re-assessment. Other period of use, storage conditions, thawing conditions are artificially controlled, as long as the work in strict accordance with SOP, generally will not have too many problems.
Second, reduce the negative human factors
1. Operators of illegal operations: for example, do not wear gloves, silver removed from the refrigerator after it directly on line without a thaw, and the operating personnel are not operating in accordance with SOP, or unskilled machine operators, and affection are solid crystalline quality.
Preventive measures: foreman strengthen management, the operator can work according to SOP, quality assurance personnel to strengthen audit, on the machine to strengthen education and training unskilled workers, there is no official appointment card on duty are not allowed.
2. Shunting improper maintenance personnel: Strategy is to enhance the technology? Standards. For example, take crystal height, solid highly crystalline, thimble height, some delay time setting, the motor parameters, table settings and other parameters, the standard required to adjust to the best.
Third, ensure the machine will not be bad
Machine will mainly be of some spare parts for the machine or mechanical structure, knowledge systems caused by poor crystal quality of the solid. Make sure the machines function is normal.
Fourth, the implementation of the correct method of transfer machine
1. Not a good spot:
Spot re-proofing measures —- to ensure three points line.
2. Properly adjust the parameters:
For example: picklevel, bondlevel, ejectorlevel delay time, the motor parameters, can solve even be a few steps and still can be done by more than a few steps, but the result is completely different. Thimble same height, when the suction can not afford to chip, it was Shi Jin parameters, but not to consider whether the blunt thimble off or broken, resulting in chip breakage, angle offsets and so on. Delay time and the motor parameters with the same, with the bad, welding arm movements will be different, the same quality caused by abnormal.
3. 2 values are set incorrectly:
Strategy —- reset binary.
4. Inconsistent with the standard machine-conditioners.
Example: when dispensing transfer, the dispensing spring crushed, a little flexibility in dispensing head no, no outcome to adjust parameters used. Another example is the adjustment claw hook, hook claws, the lower the hook into, and if the standard pop-up go to transfer the displacement, it is easy to create and support running material deformation. Another example is the pressure welding arms, if not standard to transfer, it will also affect the quality of solid crystal, but with a parameter to adjust how? Also transfer bad.
5, master production process
1. Silver plastic tank cleaning is regular cleaning.
2. Silver gum selection is reasonable.
3. Operations staff is wearing gloves, mask work.
4. Has solid crystalline materials, curing condition, time and temperature.
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