摘要 |
A stacker is provided to resolve the discomfort to unload a test tray time to time during the operation. A stacker comprises a plurality of lateral frames(100), a base plate(200), an assistant plate(230), a tray load stock(300), a front bracket(400), a tray elevator(500). The base plate is installed on the top of the lateral frame. The base plate has a plurality of guides(220). The assistant plate is installed at the lower part of the base plate. The tray load stock loads a plurality of trays on a plurality of guides of the base plate. The front bracket is installed at the front side of the assistant plate and the base plate. The front bracket has a knob(410) on one side. The tray elevator loads and unloads the test tray by going up and down along the inner side of the guide.
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