| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric driving unit for X-type gun capable of preventing a pressure application driving body from being troubled inside thereof, stabilizing holding of the gun, operating with precision while reducing a trouble during a welding operation, excluding interference with a workpiece and a jig, and also capable of stabilizing a swinging motion of the gun arms, executing swinging motion naturally, simplifying attachment and detachment as the driving unit and executing maintenance with very ease and precision. SOLUTION: The electric driving unit for X-type gun comprises a pressure application shaft 9 having a part to be driven by a motor 16 and pulled into the motor, a rotary shaft 17 provided in the motor and formed of a hollow shaft, a screw shaft 18 secured in the rotary shaft, a nut 20 to be threaded with the screw shaft provided in the pressure application shaft, a hollow part 21 for containing therein a tip end side of the screw shaft formed in the pressure application shaft, a guide bearing 22 provided at the front end side of the motor for guiding the pressure application shaft, a bearing 11 for causing one arm 1 to be journalled to the pressure application shaft by a pivotal shaft 10, and another bearing 15 provided in a case 13 of the pressure driving body 8 at an end portion thereof for causing the other arm 3 to be journalled to the pressure application driving body by a pivotal shaft 14. COPYRIGHT: (C)2009,JPO&INPIT
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