Abrégé

A machine is provided for trimming the fore-edge of books including at least one conveyor device having two superposed belts mounted about relative pulleys, the distance between the adjacent branches of the two belts being equal to the thickness of the books, which are fed to one end of the conveyor device with their spine parallel to its direction of movement and their fore-edge to be trimmed projecting from the belts, a trimming blade movable in a vertical plane parallel to the direction of movement of the books, and a presser and counter-presser to make contact with opposing parts of a book block which are adjacent to the cutting plane of the trimming blade. The machine further comprises two furrowers, one for each of the two faces of the books to open openable book parts before the trimming operation.

Classes IPC  ?

• B42C 1/00 - Collationnement ou assemblage de feuilles combiné avec des procédés de fixation permanente de feuilles ou cahiers ou d'insertion d'encarts

Abrégé

The invention relates to a machine for trimming the fore-edge of books formed from a book block with its spine either sewn or milled and glued. However prior art machines present a problem, due to the fact that suckers can leave marks on the cover. The machine according to the present invention is characterised by comprising two furrower devices, one for each of the two faces of the books, each to be inserted, starting from the fore-edge, between a relative openable part of the cover and the book block to open this openable part before a trimming operation is carried out on the fore-edge, to prevent a blade from interfering with the cover.

Classes IPC  ?

• B26D 1/04 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant linéairement
• B26D 1/10 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant linéairement l'élément coupant étant animé d'un mouvement de va-et-vient dans une direction parallèle, ou sensiblement parallèle, à l'arête de coupe
• B26D 7/01 - Moyens pour maintenir ou mettre en position la pièce
• B26D 7/06 - Dispositions pour faire avancer ou évacuer les pièces autres que les feuilles, les bandes ou les filaments