1. The PCB to be mounted enters the transmission track, and the sensor at the entrance of the track finds the PCB. The system tells the conveyor motor to work and sends the PCB to the next position.
2. When the PCB enters the starting point of the operation area, the transfer equipment sends the PCB into the placement position, and triggers the sensor of the placement position when it is about to be in place. The system controls the corresponding organization to make the PCB stay in the predetermined placement position. Mechanical positioning equipment operation, PCB fixed in the predetermined position. Clamp the PCB to prevent the PCB from moving.
3. PCB positioning equipment operation, determine the orientation of the PCB is in the predetermined orientation, otherwise, correct the orientation coordinate reference system coordinate system of the PCB.
4. According to the program setting, check the processing optical discrimination mark (mank) to determine the PCB orientation.
5. The components packed in the special feeder are transported or prepared to the predetermined position according to the position set by the program.
6. When the nozzle moves to the position of pick-up element, the vacuum is opened, and the nozzle drops to pick-up element.
7. The vacuum pressure sensor or photoelectric sensor is used to detect whether the element is absorbed.
8. Through the camera or photoelectric sensor to detect the height of the element (vertical direction).
9. Through the camera or photoelectric sensor to detect the component angle (horizontal direction), and identify the component characteristics, and then read the component characteristic value preset in the component database, and compare the practical value with the detection value, so as to judge the component characteristics.
When the eigenvalues do not match, the fault of the pick-up element is judged and the pick-up is made from the beginning. If it is consistent, the current center orientation and rotation angle of the component are calculated.
10. Throw the faulty component into the waste collection box.
11. According to the program setting, adjust the component angle through the rotation of the mounting head; adjust the XY direction coordinate to the program setting orientation through the movement of the mounting head or PCB, so that the component center coincides with the mounting orientation point.
12. The suction nozzle drops to the preset height, the vacuum is sealed, and the components fall down to complete the mounting.
13. Cycle from step 5 to the end of mounting.
14. The placement part moves to the unloading position and transfers the pasted PCB to the unloading track. The sensor at the beginning of the unloading trajectory is triggered, and the control system tells the conveyor motor to work and send the PCB to the next position until it is sent out of the machine.