Buckle folding apparatus
A folding apparatus comprises: - a feed unit (10) for supplying a medium (44) to be folded, - a folding substrate (12;12';62) forming a convexly curved support surface for the medium (44) and adapted to be driven back and forth in circumferential direction of said support surface, and - a pinch...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A folding apparatus comprises:
- a feed unit (10) for supplying a medium (44) to be folded,
- a folding substrate (12;12';62) forming a convexly curved support surface for the medium (44) and adapted to be driven back and forth in circumferential direction of said support surface, and
- a pinch and guide structure (14) for folding and guiding the medium (44) on the support surface. The pinch and guide structure (14) comprises two endless belts (28) each of which is arranged to have a belt portion (28a) held in mating engagement with a portion of the curved support surface, so that the two endless belts (28) define two separate paths for the medium (44),
and wherein the folding substrate and the pinch and guide structure define a closed circulation path in which the two separate paths are joined at a point remote from the feed unit. |
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