| 摘要 |
PROBLEM TO BE SOLVED: To avoid the occurrence of the scuffing of a screw in relation to a heating cylinder by preventing the core dislocation of the screw effectively, to improve durability by securing a smooth action, reducing abrasion, etc., and to raise the detection accuracy of a load cell. SOLUTION: When the driving mechanism 1 of an injection molding machine M having an injection block 3 to which rectilinear propagation motion is transmitted and a screw coupling 6 to which rotational motion is transmitted, supporting the screw coupling 6 rotatably through a bearing part 7 by the inner peripheral part of the injection block 3, and including the load cell 8 detecting the pressure in the axial direction Fa of the gap between the injection block 3 and the screw coupling 6 is constituted, a thrust bearing 9 is made to intervene between the screw coupling 6 and the front end surface 8f of the load cell 8. The bearing part 7 is constituted by an angular ball bearing 10 arranged on the rear end surface 8r side of the load cell 8 and a cylindrical roller bearing 11 arranged in parallel with the angular ball bearing 10. COPYRIGHT: (C)2008,JPO&INPIT
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