| 摘要 |
A conveyor for transporting flat articles, e.g., printed circuit boards, between manufacturing workstations includes laterally spaced endless belts disposed about pulleys at opposite ends of the conveyor at each side thereof. The belts lie on edge, having a height dimension greater than their width dimension. The upper edges of the belts are beveled to facilitate transfer of flat articles from one conveyor section to the next. The articles are conveyed on the upper flat edges of the conveyor belts. The axes of rotation of the pulleys at opposite ends of the conveyor converge downwardly and longitudinally toward one another by locating the single bearing race of each pulley above the central longitudinal axis of the belt. In this manner, the pulley axes converge downwardly and longitudinally toward one another such that the belts are biased for engagement along guide surfaces disposed between the belts and the flanges on the lower ends of the pulleys, freeing the upper ends of the pulleys from obstructions.
|
