| 摘要 |
A welding wire feeder including an alignment tongue (74) and groove (76) connection between a clamp arm (66) and a welding drive assembly housing is provided. In certain embodiments, the alignment tongue (74) extends from an end of the clamp arm (66) opposite a pivot point (68, 78) about which the clamp arm (66) rotates relative the assembly housing. The corresponding alignment groove (76) may be formed in the assembly housing to receive the alignment tongue (74) when the clamp arm (66) is rotated such that a drive wheel (50) mounted on the clamp arm (66) contacts a drive wheel (48) mounted on the assembly housing. In addition, a tensioner (70) may be pivoted into a groove (88) in the clamp arm (66) to transfer a compressive force through the clamp arm (66), forcing the drive wheels (48, 50) together. The alignment tongue (74) and groove (76) may reduce lateral displacement of the clamp arm (66) relative to the assembly housing that may be caused by a force transferred to the clamp (66) arm as the tensioner (70) is pivoted. |
