| 摘要 |
An apparatus for stacking thermoplastic bags having weld seams extending transversely to the direction in which they are received comprises: a plurality of gripping bars for grasping the leading edges of the bags and conveying them to a stacking station; a pair of confronting endless congruent guide grooves for receiving the ends of the gripping bars so they can be conveyed along the length of the conveying path; an upstream and a downstream pair of endless conveyor chains for conveying the gripping bars along the conveying path, the downstream pair of endless conveyor chains moving slower than the upstream pair of conveyor chains; and means for releasably attaching the gripping bars with said pairs of endless conveyor chains so that the gripping bars can be conveyed by said upstream chains from a bag receiving position to an intermediate location and wherein the bags can be further transferred by said downstream pair of chains from said intermediate location to a stacking position. |
