Method and apparatus for breaking workpiece, scribing and breaking method, and scribing apparatus with breaking function

• Main Authors: MITO, MASANORI, HOSHINO, TAKANOBU, KONO TAKAYA, SHIMOTSUCHI, TAKAYOSHI, HANYU, AKIO, NAKAZAWA, TOJI, SHISHIDO YOSHIAKI
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2006
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; CONVEYING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GLASS; HANDLING THIN OR FILAMENTARY MATERIAL; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; PACKING; PERFORMING OPERATIONS; PNEUMATIC TUBE CONVEYORS; SEMICONDUCTOR DEVICES; SHOP CONVEYOR SYSTEMS; STORING; TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING; TRANSPORTING

The present invention provides a method and an apparatus for breaking a workpiece capable of preventing the back side of the workpiece from chipping due to the scratching upon breaking the workpiece on which a scribing line is scribed. The method for breaking a workpiece 5 in accordance with the present invention comprises the steps of: attaching the back side of the workpiece 5 onto a stretchable sheet 9; stretching the sheet 9 to which the workpiece 5 has been attached; and breaking the workpiece 5 by scribing a scribing line 5c through the back side of the workpiece5 under the condition that the sheet 9 is stretched. The workpiece 5 is simultaneously broken and separated due to the stretching force of the sheet 9 so that the scratching between the broken workpieces 5 can be reduced and the chipping occurred on the back side can be avoided. Meanwhile, as the stretching force applied on the workpiece 5 becomes an assistant for breaking the workpiece, the workpiece 5 can be broken with a smaller force.