| 摘要 |
PURPOSE:To enable injection and mold clamping actions without making use of a clutch and gear, by a method wherein a member A bearing a screw revolving shaft and a member B supporting both end parts of a plurality of pieces of shafts of the member A are provided and a plurality of electric motors is fitted to the member B. CONSTITUTION:A screw 12 is fitted to a barrel 11 in an insertion state revolvably and withdrawable in an axial direction, a shaft end of the screw 12 is fitted in a revolving shaft 13 and the barrel 11 and revolving shaft 13 are operated in conjunction with revolving, advancing and retreating actions of the screw 12. A member 14 supports the revolving shaft 13 revolvably and screws with a shaft 16 transmitting power of an electric motor 15 such as a servo motor fitted to a stationary member 19. When, therefore, the shaft 16 revolves positively or reversely by an electric motor 15, the member 14 advances and retreats in the right and left directions and then the screw 12 connected with the member 14 advances and retreats within the barrel 11. An electric motor 17 is so constituted that it makes the revolving shaft 13, that is, the screw 12 revolves by a timing belt 18. |
