公开(公告)号：US11325797B2

公开(公告)日：2022-05-10

申请号：US16080458

申请日：2017-03-07

Applicant: BOBST MEX SA

Inventor： Nicolas Delieutraz ,  Yann Delley

IPC: B65H3/08 ,  F16K31/124 ,  F16K27/00

Abstract: The invention relates to a device for gas and/or vacuum distribution (1) for a sheet processing machine (100), the device includes: at least one controllable pilot valve (4; 40), a fixed body (5) including: at least one main gas inlet (7) to be connected to a gas or vacuum source, at least one main gas outlet (8) intended to be connected to at least one suction cup and/or to at least one nozzle, at least a first and a second control gas openings (10, 11), at least one of the openings being connected to the controllable pilot valve (4; 40), at least one housing (9) having a first chamber (9a) communicating with the main gas inlet (7) and outlet (8) and a second chamber (9b) communicating with the first and second control gas openings (10, 11), at least one mobile piston (6) axially movable in the housing (9) by the action of a control gas or vacuum supplied in the second chamber (9b) through the at least one control gas opening (10, 11) connected to the controllable pilot valve (4; 40), the mobile piston (6) being movable between: a closed position in which the mobile piston (6) blocks a gas path (16) between the main gas inlet (7) and outlet (8) in the first chamber (9a), and an open position in which the mobile piston (6) releases the gas path (16), first and second chambers (9a, 9b) isolated from each other by cooperation of shapes between the mobile piston (6) and the housing (9) without frictional seal between the mobile piston (6) and the housing (9). Also disclosed are a suction unit and a feeder including such a device for gas and/or vacuum distribution and a sheet processing machine comprising such feeder or such a device for gas and/or vacuum distribution.

公开(公告)号：US11827478B2

公开(公告)日：2023-11-28

申请号：US17596117

申请日：2020-06-02

Applicant: BOBST MEX SA

Inventor： Yann Delley ,  Steven Stojanovic-Roth ,  Jean-Claude Rebeaud

IPC: B65H29/68

CPC classification number: B65H29/686 ,  B65H2406/3661 ,  B65H2406/411 ,  B65H2701/1313

Abstract: The invention relates to a suction brake for use with a sheet conveyor configured to convey a succession of flat elements in sheet form along a conveying path between a first location and a second location, the suction brake comprising:



a hollow body having an interior cavity and a face that defines a plurality of suction apertures that communicate with the interior cavity;
an obturator arrangement coupled to the hollow body and moveable with respect to the suction apertures;
the obturator arrangement being moveable between an open position, in which the obturator arrangement exposes the suction apertures to a maximum extent, and a restricted position, in which the obturator arrangement occludes the suction apertures to a maximum extent. The obturator may rotate or be linearly translated in moving between the open and restricted positions.