Leveler device of signatures on movable saddle of bookbinding sewing machine with gas jet
AssigneeMeccanotecnica S.p.A.
InventorsMarco Madaschi, Paolo Alberto Cornolti
Life of this patent
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Abstract
A leveler device (200) is proposed for use in a bookbinding sewing machine (100) adapted to sew signatures (115) into book blocks (155) with one or more sewing threads (415). The leveler device (200) is used to level each signature (115) loaded onto amovable saddle (150). The leveler device (200) has at least one inlet (215) for receiving a gas jet and one or more nozzles (220) for ejecting the gas towards corresponding free ends of the threads (415) projecting from a last signature (115) of each completed bookblock (155). A bookbinding sewing machine (100) comprising the leveler device (200) is also proposed. Moreover, a corresponding method for operating a bookbinding sewing machine (100) is proposed.
Claims20
A leveler device for use in a bookbinding sewing machine, comprising one or more needles and one or more crochets for sewing signatures into book blocks with one or more sewing threads and a movable saddle for loading each of the signatures to be sewn, defining a current signature the leveler device for levelling the current signature onto the movable saddle, wherein the leveler device comprises:
- at least one inlet for receiving a jet of a gas,
- one or more nozzles for ejecting the gas towards corresponding free ends of the sewing threads projecting from the current signature when the current signature is a last signature of the signatures of a completed one of the book blocks, and
- at least one channel for conveying the gas extending from the at least one inlet to the one or more nozzles.
A bookbinding sewing machine, comprising:
- one or more needles and one or more crochets for sewing signatures into book blocks with one or more sewing threads,
- a movable saddle for loading each of the signatures to be sewn defining a current signature,
- a leveler device for levelling the current signature onto the movable saddle, the leveler device comprising
- at least one inlet for receiving a jet of a gas,
- one or more nozzles for ejecting the gas towards corresponding free ends of the sewing threads projecting from the current signature when the current signature is a last signature of the signatures of a completed one of the book blocks, and
- at least one channel for conveying the gas extending from the at least one inlet to the one or more nozzles, and
- blasting means for providing the jet of the gas to the leveler device thereby causing the one or more nozzles to eject the gas towards the corresponding free ends of the sewing threads projecting from the last signature of the completed book block.
Dependencies are inferred from the claim text.