SMT pick and place machine also known as “placement machine” and “surface placement system”, is a device for placing surface placement components accurately on THE PCB solder plate by moving the placement head after dispensing machine or stencil printer in the production line. It is also the main equipment in SMT production line. But why should air compressor be used when placement machine works
This involves the placement machine’s main components: pneumatic and vacuum system.
In the placement machine, pneumatic parts including stop plate and splint mechanism, plate support, suction nozzle changer (the opening and closing of slide plate and the lifting and lifting of the changer when the suction nozzle is replaced), head pickup and placement (vacuum is established when the pickup is taken, and blowing is provided when the placement is made) are all needed. Also has the placement machine safety cover latches also apply pneumatic form. Some materials are also pneumatic, such as pneumatic feeders, tubular feeders and mobile feeders.
The following, the placement machine pneumatic system to be introduced. First of all, the pressure air into the machine system must be dehumidified and filtered to ensure the clean and dry air, so as not to affect the normal operation of the machine or even cause damage; Adequate flow and pressure also need to be ensured. The placement machine itself must be equipped with each set of air source, including pressure regulating valve, pressure gauge and filter, etc. The pressure is generally adjusted to about 85PSI. Most machines also have low-pressure sensors, and when the pressure is too low (usually around 70PSI), the machine will not be able to return to zero or operate.
For example: if you open a line, a semi-automatic printing machine, a 0.5Mpa SMT machine, and an AOI machine, plus an air gun to usually wash steel mesh, what kind of air compressor is good, if two lines and how to deal with?
With 3 to 4 pieces of air compressor, choose screw air compressor, stable air supply clean noise, can extend the service life of the SMT mechanical magnetic valve. Buy how old air compressor to depend on gas consumption and line length, had better be to buy a bit bigger, even if later add what equipment to also can deal with on, supply gas pipe must choose thick, had better be 12 above. AOI is barometric.
So summed up, the placement machine for air compressor selection requirements?
The main requirements are:
1. The compressed air should be dry enough, and the air compressor should be equipped with a cold dryer.
2.the compressed air in the dust, oil and other magazines to be as little as possible, to install a filter.
3.the pressure of compressed air to meet the pressure requirements, but also enough stable, can work for a long time continuously, to be equipped with gas storage tanks, generally with two sets of air compressor to ensure uninterrupted work.
Post time: Dec-15-2020