PCB Technical - Electronic accessories needed for PCBA processing analysis

Now is the era of intelligent mechanization. A lot of production relies on machinery and equipment, such as some manipulators, which use some chips! In the process of PCBA circuit board production, it is necessary to rely on a lot of machinery and equipment to assemble a board. Often the quality level of a factory's machinery and equipment directly determines the manufacturing capacity. PCBA processing shares the following content for you:

The basic equipment required for PCBA production includes solder paste printer, placement machine, reflow soldering, AOI detector, component angle cutter, wave soldering, tin furnace, plate washer, ICT test fixture, FCT test fixture, Aging test racks, etc., PCBA 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

1. Solder Paste Printer

Modern solder paste printers generally consist of plate loading, solder paste addition, 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 printer. The transfer station is input to the placement machine for automatic placement.

The cleaning processes included in the solder paste printer include: bottom wiping of the solder paste printer (water-based cleaning agent W2000), and offline cleaning of the solder paste stencil (W1000/EC-200).

PCBA processing

2. Mounter

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, by moving the placement head to accurately mount the surface components 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 has been 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 the welding process, and the manufacturing cost is easier to control.

4. AOI automatic optical detector

The full name of AOI (Automatic Optic Inspection) is automatic optical inspection, which is based on optical principles to detect common defects encountered in welding production. AOI is a new type of testing technology that is emerging, but it is developing rapidly, and many manufacturers have launched AOI automatic optical inspection equipment.

This is the relevant introduction of PCBA circuit boards. If there are other things you need to know, you can continue to pay attention to us. In addition, 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 the defects through the display or automatic signs / Mark it out for repair by maintenance personnel.