SMT placement machine component placement process 1
From: Author:Mark Hardy Publish time:2021-09-09 10:28 Clicks:0
1. Patch alignment
1) Positioning and clamping status of PCB board
The positioning and clamping device of the PCB board must be in a normal state, and there must be no looseness or foreign objects, otherwise it will cause inaccurate positioning, uneven PCB, and even random movement of the PCB during the placement process, resulting in inaccurate placement.
2) The accuracy of SMT feeder
Its accuracy directly affects the accuracy of the component in the position to be sucked, and even the timing of the suction nozzle. The consequences include failure to suck the material, incorrect suction, suction flip, and incorrect placement of the patch.
3) The accuracy of the machine's visual recognition system
It directly affects the identification of the size, especially the MARK point of the PCB. After the identification of the component, it has the greatest impact on the accuracy of the compensation of the patch position.
4) MARK point of PCB
The quality of the MARK point directly affects the recognition of the machine and the compensation of the position. The shape of the MARK point is various. Generally, it is circular. It is required that the MARK point has the same shape and size, good contrast, and consistent batches.
5) The correctness of the coordinates of the placement program.
(3) Maintenance of the machine
Daily, weekly, monthly, and annual maintenance schedule
I.C.T is a manufacturer of SMT machines. It mainly provides customers with SMT production lines including SMT Stencil Printers, Pick and place machines, Reflow Oven, AOI Machine, Wave Soldering Machine and PCB Handling Machine etc.
More details, please contact us:
Tel: +86 13670124230 (WhatsApp/Skype/WeChat)
Email: etaSMT@foxmail.com
(3) High-precision patch
1) The use of regular claws
At present, there is only the M82 machine, and the suction position is corrected without visual recognition to ensure the accuracy of the placement position.
It should be noted:
The normal force should be normal, otherwise it will cause damage to the components.
Whether the movements of the claws are synchronized and the force is even, which will cause inaccuracy of the claws.
2) Fixing of the machine
Levelness, stability, and fixity should be strictly guaranteed. Otherwise, the machine will shake and vibrate severely during the working process, and the normal operation of the high-precision system will increase the wear and tear and shorten the life of the machine.
3) The design of the machine
a. Stability
b. Three-dimensional recognition
c. Small field of view high-precision recognition
d. Adaptability to component color
e. Good position compensation system
The main ones are mechanical devices such as FEEDER, nozzle system, placement machine positioning system such as axis, ruler, PCB clamping device; air pressure system.
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