PCB News - Brief introduction of PCBA processing jigs

Brief introduction of PCBA processing jigs
At present, the country has higher and higher requirements for environmental protection and greater efforts in link governance. This is a challenge but also an opportunity for PCB factories. If PCB factories are determined to solve the problem of environmental pollution, then FPC flexible circuit board products can be at the forefront of the market, and PCB factories can get opportunities for further development.
The Internet era has broken the traditional marketing model, and a large number of resources have been gathered together to the greatest extent through the Internet, which has also accelerated the development speed of FPC flexible circuit boards, and then as the development speed accelerates, environmental problems will continue to appear in PCB factories. In front of him. However, with the development of the Internet, environmental protection and environmental informatization have also been developed by leaps and bounds. Environmental information data centers and green electronic procurement are gradually being applied to the actual production and operation fields.
1. Synthetic stone anti-static tray

It is used to support SMT tin printing, patching and reflow oven; products need selective wave soldering, large board deformation prevention, shielding SMT components, etc. when passing the wave oven; support thin substrates or flexible circuit boards and irregular shapes Of the substrate. It can carry multiple pieces to increase productivity.

2. Various types of fixtures, fixtures, anti-static silicone plate over furnace fixtures
Used for PCBA electronic factory production, rework (such as ball planting tooling, tin printing tooling), routing (ROUTER), testing, etc.
The advantages are:

1. Avoid contamination of golden fingers or contact holes due to manual contact;
2. Cover the bottom SMT components so that they can be partially welded with standard reflow equipment to prevent bending;
3. Standardize the width of the production line;
4. Use porous jigs to increase production efficiency;
5. Prevent the surface of the substrate from being polluted by overflowing tin.

Three, SMT consumables

All kinds of fingerprint tables, scrapers, positioning sheets, steel solder paste mixing knives, anti-static plastic solder paste mixing knives, five-slot racks, anti-static inspection kits, BGA films, BGA ball machines, PCB board gold plating liquid (pens), SMT manual vacuum suction pen and SMT non-standard equipment, tools and SMT equipment accessories, etc.

Fourth, stencil printing

Stencil printing is the first step in the SMT process. The high accuracy of the mold, the uniformity of coating and the high efficiency are of great significance in the entire automated process. Stencil printing is SCREEN PRINTING and SILK METHOD. In practical applications, the stencil leakage is mainly used. The stencil leakage is to engrave the leakage hole on the metal template. The solder paste or glue through the leakage hole is printed on the pad on the PCB board. Etching, electroforming, and laser are three kinds of steel. net.
Electroformed steel mesh is an advanced hole-opening process that can replace laser steel mesh. The taper hole-opening process is adopted to remove the solder paste from the mold cleanly, avoiding the phenomenon of tin connection and tin staining at the bottom of the steel mesh, and the precision of the opening is high. .