Types of feeder and how to work

Mounter is also called mounter , yes SMT A very important core machine in the industry ,SMT The production efficiency and capacity of the whole line are determined by the chip mounter , There are also high-speed in the industry 、 Medium and low speed （ multi-function ） The difference between machines , The mounting head controlled by the mounting cantilever of the mounting machine （ The mounting head is equipped with a suction nozzle ） Suction nozzle to pick up components , Attach different components to PCB Specified pad position ; How does the suction nozzle pick up components , It is through the Feida that I will tell you next （feeder）, It is also called feeder in Chinese to realize this operation .

Feeder of the mounter （feeder） Feida has many styles , Here are some types of
Cassette feeder , Belt feeder , Tube feeder , Tray feeder

Belt feeder

The belt feeder is one of the most commonly used feeders in the chip mounter , The traditional structure has wheel type 、 Claw type 、 Pneumatic and multi pitch electric , Now it has developed into high-precision electric type , The high-precision electric type is opposite to the traditional structure , Higher transmission accuracy 、 Faster feeding 、 More compact structure , More stable performance , Greatly improve the production efficiency

Basic specifications of strip material

· Basic width ：8 mm,12 mm,16 mm,24 mm,32 mm,44 mm and 52 mm Etc ;

· Band spacing （ Adjacent component center to center ）：2 mm,4 mm,8 mm,12 mm and 16 mm;

· There are two kinds of banded materials ： Paper and plastic ;

Tube feeder

The tube feeder usually uses a vibrating feeder to ensure that the components in the tube continuously enter the suction position of the patch head , commonly PLCC and SOIC It is in this way that the material is supplied . The tubular feeder has a good protective effect on the pins of components , Poor stability and standardization , Low production efficiency

Cassette feeder

The box feeder is also called vibrating feeder , The working mode is to put the components into the molded plastic box or bag freely , Through the vibrating feeder, the components are sent to the mounter in turn , It is suitable for nonpolar rectangular and cylindrical components , However, it is not applicable to feeding the components into the mounter successively through the vibrating feeder or feeding pipe , This method is usually used to melt polar elements and small profile semiconductor elements , Only applicable to polar components .

Tray feeder

The tray feeder is divided into single-layer structure and multi-layer structure . The single-layer tray feeder is directly installed on the feeder frame of the mounter , Occupy multiple locations , It is suitable for the situation that there are not many pallet materials ; The multi-layer tray feeder has multi-layer automatic transfer tray , Small footprint , Compact structure , Disk mounted components are mostly various IC Integrated circuit components