Apparatus for slowing down products in rotary printing machines
AssigneeMAN Roland Druckmaschinen AG
InventorsStephan Bergmann, Ralf Werner
Life of this patent
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Abstract
An apparatus for slowing down products in the folder of rotary printing machines. A product-directing system is arranged between the jaw cylinder and paddle wheel, and a driven decelerating-roller pair is integrated into the product-directing system. In order to provide an apparatus which can be adjusted in a straightforward manner and ensures that the products are slowed in a functionally reliable manner upstream of the paddle wheel, the circumference of the decelerating rollers is equal to at least one product length, and the decelerating-roller pair is driven at a non-uniform speed.
Claims11
An apparatus for slowing down products in a folder of a rotary printing machine comprising:
- a jaw cylinder;
- a paddle wheel for delivering folded products such that they are over lapped in an imbricated stream;
- a product directing system arranged between said jaw cylinder and said paddle wheel;
- and
- a driven decelerating-roller pair operatively integrated into said product directing system and being in constant slippage-free contact with the product, wherein a circumference of decelerating rollers of the decelerating roller pair is equal to at least one product length;
- said decelerating-roller pair being driven at a non-uniform speed such that a circumferential speed of said rollers corresponds to a transporting speed of the incoming product at the start of the product and is consistently reduced towards the end of the product, wherein the speed of the rollers is greater at the end of the product than a delivery speed of the paddle wheel for the products;
- wherein acceleration of the decelerating-roller pair to the transporting speed of a following product occurs in an interspace remaining between the end of a preceding product and the start of a following product in a transporting direction.
Dependencies are inferred from the claim text.