| 摘要 |
PROBLEM TO BE SOLVED: To precisely control the moving quantities, moving speeds and moving torques of a gate cutting pin on a drive side and an ejector pin on the drive side even during continuous molding. SOLUTION: A gate cutting mechanism 10 is constituted of the support member 14 fixedly provided to a movable platen 3b, the gate cutting plate 18 fixed to the gate cutting pin 12 on the drive side, the nut member 17 fixedly provided to the gate cutting plate 18 and the ball screw member 15 locked with the nut member 17 by its screw part 15a. The ejector mechanism 30 is constituted of the ball screw member 50 locked with the rotary mechanism 51 fixedly provided to the support member 14 and the ejector pin 32 on the drive side fixedly provided to the ball screw member 50. Both mechanisms 10 and 30 are driven by the electromotor 20 fixedly provided to the support member 14 and a training-over transmission 25 having the belt 53 trained over a motor shaft 20a and the respective ball screw members 15 and 50 and rotationally driving the respective ball screw members 15 and 50 in mutually opposite directions. COPYRIGHT: (C)2007,JPO&INPIT
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