Ink duct for a printing machine

B - Operations – Transporting – 41 – F

Patent

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101/105

B41F 31/02 (2006.01) B41F 31/18 (2006.01)

Patent

CA 2003530

The ink duct is separated by at least one separating wall which is fastened to the base and is formed from two metal plates (4, 5), fastened at a distance from each other and between which a plastic intermediate plate (6) is mounted with a tight fit and so that it can be displaced and tilted and is guided by a pin (17) which is fastened between the plates and passes through an oblong hole in the said intermediate plate (6). This intermediate plate (6) has a front edge (6a) which has the shape of an arc of a circle corresponding to the periphery of the ink duct cylinder. In the use position, it is pressed against this periphery by two spring pins (9,10; 12,13) which act on its rear edge so as to ensure a leaktight contact with the said ink duct cylinder. A positioning pin (18), which is fastened to the said plate (6), allows it to be pulled into the withdrawn position, where it may be locked. The leak-tightness with the base of the ink duct is achieved by a plastic sealing strip (25, 26) provided on the lower edge of the metal plates.

La présente invention fait état d'un encrier, séparé par au moins une cloison fixée sur la base, formé de deux plaques de métal (4, 5) reliées ensemble à une certaine distance l'une de l'autre et entre lesquelles est insérée, de manière très ajustée, une plaque intermédiaire en plastique (6), qui peut être déplacée et inclinée et qui est guidée par un goujon (17) fixé entre les plaques et passant dans un orifice oblong dans la plaque intermédiaire (6). Cette dernière comprend un bord avant (6a) en forme d'arc de cercle correspondant à la périphérie du cylindre d'encrier. En position de fonctionnement, la plaque intermédiaire est appuyée contre la périphérie du cylindre d'encrier par deux goupilles-ressorts (9, 10; 12, 13), qui agissent sur son bord arrière pour assurer un contact étanche avec le cylindre d'encrier. Une tige de positionnement (18), fixée sur la plaque intermédiaire (6), permet de la tirer pour la mettre en position rentrée où elle peut être verrouillée. L'étanchéité avec la base de l'encrier est assurée par une bande de scellement en plastique (25, 26) fixée sur le bord inférieur des plaques de métal.

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