Automatic material transfer system and method
A material conveying system and the technology of the conveying system are applied in the field of automatic material conveying systems using lifting devices, which can solve the problems of no more installation, huge design, and inability to maintain a 3-meter height and width of a 12-inch semiconductor wafer, etc. Achieve the effect of increasing space and improving production efficiency
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[0026] Such as image 3 Shown is a top view of the automated wafer cassette transfer system of the present invention, in which the wafer cassette (ie, material) is transported from the inner and outer loops to each workstation 50 for related manufacturing process operations, and the inner loop is a conveyor belt 306. The outer loop is an overhead transmission system 304. Figure 4 Is along image 3 From the front view of line IV-IV, the overhead transport system (OHT) 304 includes a certain number of transport carts 301 for transporting, receiving and placing FOUP wafer cassettes 303. The extension manipulator 308 can be extended to a predetermined position (e.g. Figure 4 The right half of the FOUP is used to receive the FOUP wafer cassette 303 from the transport cart 301. The extension robot 308 has a fixed clamp 307 for clamping and fixing the FOUP wafer cassette 303. The barcode reader 305 is used to read the barcode on the FOUP wafer cassette 303, so as to know the batch number...
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