Device for stretching and fixing sheet
AssigneeBruckner Maschinenbau Gernot Bruckner GmbH & Co. KG
InventorManfred Steffl
Life of this patent
Estimating the term…
Abstract
A device for crosswise stretching and fixing of plastic sheeting includes a chain carriage (5) which has an positionally adjustable first roller (7') and a second roller (7) mounted thereon. Tension, resulting from tractive forces transmitted when the chain carriage (5) travels in a running direction, is translated into a prestress force directed substantially in the crosswise direction of a guide rail (11). The prestress force holds the adjustable first roller (7') in constant prestress contact with a first running surface (1") of the guide rail and the second roller (7') in steady contact against a second running surface (1') of the guide rail.
Claims24
A device for crosswise stretching and fixing of plastic sheeting with a continuous conveyor chain as the device travels in a running direction, the device comprising:
- at least one chain carriage;
- a link for linking the chain carriage to at least one other chain carriage;
- means for supporting the chain carriage with respect to a guide rail, the supporting means comprising:
- at least one first roller adjustably mounted on the chain carriage whereby the position of the first roller is adjustable in a crosswise direction of the guide rail;
- at least one second roller mounted on the chain carriage;
- means for translating tension, resulting from tractive forces transmitted via the link when the chain carriage travels in the running direction, into a prestress force directed substantially in the crosswise direction of the guide rail, which prestress force holds the first roller in constant prestress contact with a first running surface of the guide rail and whereby the second roller is held in steady contact against the second running surface of the guide rail.
Dependencies are inferred from the claim text.