| 摘要 |
A nut feeding apparatus (10) for feeding a weld nut (N) to an upper electrode (2) of a resistance welding machine (1), whose size and production cost are reduced, is disclosed. The apparatus comprises a piston rod (23), a tension rod (41), a tube (14), a link mechanism (33) and a nut chuck (24). When the piston rod is in a most retracting state, an upper surface of the nut chuck becomes substantially flush with a lower portion of an opening of the tube. While the tension rod (41) is at a stop in a most advancing state and when the piston rod (23) further advances, the link mechanism rotates around a rotation axis (34b) at a tip of the tension rod (41), and thereby, the weld nut held by the nut chuck (24) moves to a feeding position of the weld nut in the upper electrode (2). |
