| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability of a ball screw without generating loss time, and to prevent early damage of the ball screw. SOLUTION: An injection nozzle 13 injecting melting resin into a cavity is controlled to repeat nozzle touch pressing the injection nozzle 13 on an upper mold 25 and a lower mold 26 in a molding cycle of an electric vertical type injection molding machine 10 and nozzle back separating the upper mold 25 from the lower mold 26. A moving stroke of the nozzle touch and the nozzle back of the injection nozzle 13 assembled in the molding cycle is made to be the minimum moving stroke of a drive ball screw 16 driving the injection nozzle 13. Therefore, the action is a step for adjusting the circulation of grease lubricant filled in a nut element 17 by interlocking with the action of the nozzle touch and the nozzle back. COPYRIGHT: (C)2009,JPO&INPIT
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