Design And Research Of LED Die Bonder Feeder Mechanism Based On Virtual Prototyping Technology

LED Die Bonder is one of the important equipment in encapsulation working procedure of LED manufacturing process, whose function is placing the chips on the leadframe from the wafer quickly and accurately. At present, the advanced LED Die Bonder is monopolized by the big foreign companies basically, which become a bottleneck of China semiconductor encapsulation industry development.So we have to develop the micro-electronics and encapsulation technology research and applied equipment R&D, master the core technology, R&D the product which is provided with independent knowledge property right. This thesis comes from 2005 Guangdong key domain project electronic element special equipment's key technologies-automatic semiconductor chip Die Bonder (TC05B372-1).Feeder Mechanism is one of the most important mechanism in LED Die Bonder. This dissertation innovatively designed a steady and efficient feeder mechanism, and detailedly designed the structure of LED Die Bonder Feeder Mechanism through contrast and analysis. The mechanism used the positive and negative rotation of the servo motor to drive the ball bearing screw, which then makes the screw nut move reciprocating and makes the holding indexers done the feed motion in X direction; in the same time, it drives the holding indexers to "hold" and "loosen" the leadframe through the Air-Cylinder Mechanism. The leadframe start to go forward after it is held by the indexers steady, and it is loosened by indexers after it reach the working position and stop stably. Thus, the leadframe wouldn't show the vibration in Y direction and inertia in X direction in the whole feeding process.This dissertation used 3D CAD software—Pro/ENGINEER to modeling the parts of the LED Die Bonder Feeder Mechanism, and virtual assembled the separated parts to generate the solid assembly model. Then we imported the assembly model of the whole feeder mechanism into the virtual prototyping software—ADAMS using the interface module—Mechanism/Pro. We added the constraints and motions on the assembly model in ADAMS to set up a significant virtual prototyping. In the end we carried through the simulation analysis of the virtual prototyping according to the different working situation of the parts in LED Die Bonder Feeder Mechanism, and generated the simulation graphs of the key parts. The simulation graphs provided the reasons for the product design improvement.This dissertation took virtual prototyping technology as a tool, provided a set of effective theoretic method for the structure design of High speed and High precision Mechanical Product. Finally we trial-produced three sets of physical prototyping whose name is DBS-0608.