In the PCBA circuit board production process, a lot of machinery and equipment are needed to assemble a board. Often the quality level of a factory’s machinery and equipment directly determines the manufacturing capacity.
The basic equipment required for PCBA production includes solder paste printer, placement machine, reflow soldering, AOI detector, component angle cutter, wave soldering, tin furnace, washing machine, ICT test fixture, FCT test fixture, Aging test racks, etc., PCBA circuit board processing plants of different sizes, the equipment equipped will have all the differences.
Analyze what electronic accessories and consumables are needed for PCBA circuit boards
PCBA production equipment for electronics factory
1. Solder Paste Printer
Modern solder paste printers generally consist of plate loading, solder paste adding, imprinting, and circuit board transfer. Its working principle is: first fix the circuit board to be printed on the printing positioning table, and then the solder paste or red glue is printed on the corresponding pad through the stencil by the left and right scrapers of the printing machine. The transfer station is input to the placement machine for automatic placement.
Mounting machine: also known as “mounting machine”, “Surface Mount System” (Surface Mount System), in the production line, it is configured after the solder paste printer, is to accurately mount the surface components by moving the placement head A device placed on the PCB pad. Divided into two kinds of manual and automatic.
3. Reflow soldering
There is a heating circuit inside the reflow soldering, which heats air or nitrogen to a high enough temperature and blows it to the circuit board where the component is already attached, so that the solder on both sides of the component is melted and bonded to the motherboard. The advantage of this process is that the temperature is easy to control, oxidation can be avoided during welding, and the manufacturing cost is easier to control.
4. AOI automatic optical detector
AOI (Automatic Optic Inspection) stands for automatic optical inspection, which is an equipment that detects common defects encountered in welding production based on optical principles. AOI is a new type of testing technology that is emerging, but it is developing rapidly. Many manufacturers have introduced AOI automatic optical inspection equipment.
During automatic inspection, the machine automatically scans the PCB through the camera, collects images, compares the tested solder joints with the qualified parameters in the database, after image processing, checks out the defects on the PCB, and displays/marks the defects through the display or automatic signs Come out for repair by maintenance personnel.
5. Component trimming machine
6. Wave soldering
7. Tin furnace
Generally speaking, tin furnace refers to a welding tool used in electronic welding. For discrete component circuit boards, the welding consistency is good, the operation is convenient, fast, and the work efficiency is high. It is a good assistant for your production and processing.
8. Washing machine (ultrasonic or through spray cleaning machine)
is used to clean the PCBA circuit board, which can remove the contaminants and residues on the board after soldering. Improve and guarantee the reliability of PCBA circuit boards.
W3000 is a new type of environmentally friendly water-based product developed by Shenzhen Heming Technology Co., Ltd. independently researched and developed patented technology. It breaks the cleaning method of conventional PCBA water-based cleaning agent that requires heating. It can be reached at room temperature (25~40℃). Ideal cleaning effect, short cleaning time and high efficiency.
It has very good removal ability for various types of no-clean solder paste residues, flux residues, oil stains, fingerprints, metal oxide layers, and electrostatic particles and dust. With the ultrasonic cleaning process, it can be used for the high-clean cleaning of high-precision, high-density, high-tech components such as microBGAs, Flip-Chips, etc.
9. ICT test fixture
ICT Test is mainly to test the PCBA circuit open circuit, short circuit and welding condition of all parts by contacting the test points of the PCB layout.
10.FCT test fixture
FCT (Functional Test) It refers to the simulated operating environment (stimulus and load) provided to the test target board (UUT: Unit Under Test) to make it work in various design states, so as to obtain the parameters of each state to verify UUT The function is good or bad test method. Simply put, it is to load a suitable stimulus to the UUT and measure whether the response of the output end meets the requirements.
11. Aging test stand
The burn-in test rack can test PCBA boards in batches, and test out the PCBA boards with problems by waiting for a long time to simulate user operations.
12. The cleaning process includes
The bottom of the solder paste printer is wiped, the solder paste stencil cleaning, the red glue screen cleaning, the fixture carrier cleaning, the PCB circuit board cleaning, etc. For details, you can search for related introductions on the official website of Heming Technology.