1. Procurement of components: Firstly, the procurement of components is carried out to ensure the quality and reliability of the required components.
2. Preparation of PCB boards: The PCB boards to be processed are prepared, including cleaning, applying solder adhesive and other treatments.
3. Process parameter setting: according to the specifications of the components and PCB boards, set the process parameters such as precise positioning and soldering parameters.
4. Automatic placement: Put the PCB board into the automatic placement machine, which is equipped with equipment such as feeder, identification system and placement head.
a. Feeding: The automatic mounter gets components from component trays, tapes (Tape & Reel) and other electronic component suppliers.
b. Visual Recognition: The automated placement machine uses a machine vision system to recognize and detect the correct position and orientation of the components.
c. Precise Positioning: Based on the result of visual recognition, the automated mounter precisely places the component in a predetermined position on the PCB board by means of precise positioning.
d. Mounting: The automated mounter attaches the component to the PCB using a pre-coated solder adhesive.
5. Jumpering and Soldering: For some components, jumpering or hand soldering may be required.
6. Over-oven soldering: The pasted PCB is placed into a reflow oven or wave soldering oven, etc. for overall soldering to ensure that the components are firmly attached to the PCB.
7. Visual Inspection: Using Automatic Optical Inspection (AOI) equipment, the placement and soldering process is inspected and verified to ensure the accuracy of the placement and the quality of the soldering.
8. Cleaning and other processing: Cleaning PCB boards and removing possible residues of soldering flux, clippings, etc..
9. Testing: Test the function, performance, etc. of the finished mounted PCBA to ensure that it works properly.
10. Packaging and shipping: the placement of the completed PCBA for appropriate packaging, and marking and shipment preparation.
It should be noted that the specific PCBA chip processing process may vary slightly depending on different factories and equipment, but will generally include the above major steps. This process ensures that components are accurately placed and reliably connected on the PCB, providing the foundation for subsequent assembly and testing of the PCBA.