AUTOMATED SEPARATION AND FEEDING SYSTEM FOR WAFERS OF SOLAR CELLS FOR SCREEN PRINTING MACHINE IN SOLAR CELL PRODUCTION LINE

摘要

Accordingly, an automatic solar wafer separation and feeding system has been designed and developed and interfaced to the printing machine in the manufacturing line of solar cells. The system incorporates a PLC (programmable logic controller) based electronic control for the logics needed for the various movements to ensure error free functioning. A vacuum system is employed to pick up the cell from the separation point place to the feeder point. A set of thin air jets is used to separate the wafers from sticking to each other. A pre-aligning system equipped with pneumatic cylinders position the cells so that the cells are fed to the printing machine precisely in orientation to the print screen. Two numbers of magazines are used to facilitate bulk loading of wafers up to 1400 numbers of wafers at a time. Also two numbers of servomotors are employed to position the wafers in the magazine to enable the vacuum cups pick up the wafers at a fixed height consistently.