Conveying device

Abstract

In an adjustment zone (B), the spacings between objects, which are conveyed by independently movable holding elements (2) along a rail track (1) are e.g. for a processing operation adjusted to a predefined value larger than the minimum spacing. To achieve this, a continuously circulating and compressible, adjusting chain (5) running in a circulating track is provided, which adjusting chain (5) is elongatable in a controlled manner. The circulating track extends at least in the adjustment zone (B) parallel to the rail track (1) such that the adjusting chain is in engagement with holding elements (2) conveyed along the rail track (1). Furthermore, control means for adjusting a predefined compression of the adjusting chain (5) are provided in the adjustment zone (B). The adjusting chain (5) comprises e.g. chain links (6) joined together in an articulated manner. Assigned to every second articulated joint of chain links (6) are guide rollers (7.1) rolling in a circular guideway (8) and drivers for driving holding elements (2), and assigned to the other articulated joints are control rollers (12) rolling along a cam (11) which serves as control means. The distance between the circular guideway (8) and the cam (11) determines compression of the adjusting chain (5) and therefore the spacing between the holding elements (2) in the adjustment zone (B). The device is suitable in particular for adjusting spacings between holding elements greater than the minimum spacings as established between holding elements being conveyed in a pushed manner, wherein the holding elements are pushed and the adjusting chain (5) is circulating passively.

Dependencies are inferred from the claim text.