Patent ID: 7007597

Claim:
A vibrator assembly for a strapping head for a strapping machine configured to position, tension and seal strapping material around a load, the strapping head including a body, an anvil, and a welding motor having a rotating output shaft, the vibrator assembly comprising: an eccentric element operably mounted to the welding motor output shaft for rotation therewith; a bearing disposed about the eccentric element; a housing, the eccentric element and the bearing disposed at least in part within the housing, the housing defining a cup-shaped well therein, the well having a first axis length and a second axis length, the first axis length being longer than the second axis length, the first axis length being in a transverse direction, and the second axis length being in an oscillating direction, the bearing being restrained in the oscillating direction relative to the housing; a weld pad operably connected to the housing by a link, wherein as the motor output shaft rotates, the eccentric element is rotated and in turn rotates the bearing to impart oscillating motion to the weld pad in the oscillating direction, and wherein the bearing is restrained from moving in the transverse direction; and a key and a mating keyway one disposed on the housing and the other disposed on the weld pad to restrain the weld pad from pivoting about the link relative to the housing.