PCBA Tech - Introduction of PCBA processing machinery and equipment

PCBA was introduced to China by a foreign invention. It is a core component in the manufacture of electronic products. First, various electronic parts are required to be assembled together. This requires the precision and intelligence of the assembly of PCBA machinery and equipment. Next, let's discuss the mechanical equipment for processing PCBA and take a look together.

PCBA processing is an electronic processing industry with a relatively high degree of mechanical integration. The use of more and more mature processing machinery and the improvement of manufacturing processes have continuously improved the yield of PCBA processed products and gradually increased efficiency. Processing machinery commonly used in PCBA processing has The following types.

PCBA processing machine one: printing machine

The printing machine is located at the front end of the PCBA processing production line. The main purpose is to print solder paste or patch glue on the PCB circuit board. The work flow is that after the mesh of the stencil of the printing machine is aligned with the PCB pad, it is placed on the steel through the movement of the squeegee. The solder paste or patch glue on the Internet is printed on the PCB pad or corresponding position to prepare for the component placement in the subsequent process of PCBA processing.

PCBA processing machine 2: Dispenser

The main purpose of the dispenser is to apply solder paste or patch glue. The working process is to apply a prescribed dose of glue or solder paste at the required position of the PCBA device through the pressure of the vacuum pump. The advantage of the dispenser is that in the production process, There is no need to replace the production jig, which greatly shortens the production cycle, and is suitable for small batch and multi-product production.

PCBA processing machine three: placement machine

The placement machine is the core mechanical equipment in PCBA processing, also known as the placement machine. The main purpose is to accurately remove the known material from the specified position through the pre-set conditions, and correctly mount it to the specified position. PCBA processing Mounting capacity and production capacity mainly depend on the speed and accuracy of the placement machine and other functional parameters. It is also the most technical, complex and expensive equipment in the PCBA process.

The automatic placement machine is a high-speed, high-precision, highly automated, and highly intelligent equipment integrating precision machinery, electric, pneumatic, optical, computer, and sensor technology.

PCBA processing machine four: reflow soldering machine

The main purpose of is to provide a stable and controllable heating environment to fuse the solder pre-distributed by the printer on the PCB circuit board, so that the surface mount components and the PCB pad can be reliably combined with the solder paste.

PCBA processing machine five: testing equipment

The main function of the inspection equipment is to inspect the assembly quality and street quality of the mounted PCBA.The equipment used mainly includes a magnifying glass, a microscope, an automatic optical detector, an online tester, an X-ray inspection system, a functional tester, etc. According to the needs of testing, its installation location is the corresponding position behind the production line.

PCBA processing machine six: rework equipment

The main function of the rework equipment is to rework and repair the PCBA products that have failed to detect faults. The tools used are soldering irons, BGA rework stations, etc.

PCBA processing machine 7: cleaning equipment

The function of the cleaning equipment is to remove the substances that affect the electrical properties of the processed PCBA products or the welding residues that are harmful to the human body, such as flux, etc. If you use no-clean solder, you do not need to clean. The cleaning equipment is an ultrasonic cleaning machine and a special Washing liquid (washing water: the washing water is a highly volatile flammable liquid, pay attention to safe use).