TWO-GRADE PLATE SAMPLING SYSTEM

摘要

PURPOSE:To improve yield by detecting the size and position of a defect present in a ribbon-shaped glass plate by a discrimination type defect detector, and sorting glass plates which are cut into high-grade products and low-grade products by a controller and also sampling them at the same time. CONSTITUTION:When the ribbon-shaped plate which is drawn out of a furnace is conveyed on a line conveyor 100 to the discrimination type defect detector 101, the detector 101 sends defect data on the size and position of the defect to the controller 102. A trimmer 103 draw trimmer lines in parallel to the running direction of the glass plate and an oblique cutter 104 makes cutter lines at right angles to the running direction. A breaker 105 breaks the plate into a glass plate array along the cutter line, and the plate passes through an edge cutting device 106 and is divided into plural pieces along the trimmer lines by a cutting device 107. Then they are expanded by an expanding device 108 at right angles to the running direction and a selective rejection device 109 rejects a defective plate through the decision making of the controller 102. The remaining high-grade products and low-grade products are sorted by plate sampling machines 110-1-110-6.