公开(公告)号：US20240001577A1

公开(公告)日：2024-01-04

申请号：US18255165

申请日：2021-12-08

Applicant: BOBST MEX SA

Inventor： Tim LAIR ,  Jade STERNBERG ,  Amel NEUMANN

IPC: B26D7/01 ,  B65H9/08 ,  B33Y80/00

CPC classification number: B26D7/018 ,  B65H9/08 ,  B33Y80/00 ,  B65H2801/42

Abstract: A positioning device (38) for holding a flat flexible part, especially a sheet, on a positioning surface is described. It comprises a body (44) with a fluid inlet port (52) for supplying a driver fluid to the body (44), a fluid outlet port (58) for draining the driver fluid from the body (44), and a suction opening for aspiring the flat flexible part. A circulation channel (60) connects the fluid inlet port (52) and the fluid outlet port (58) and a suction channel (70) connects the suction opening to the circulation channel (60). The suction channel (70) is connected to the circulation channel (60) adjacent to a section (64) of reduced cross section area such that a jet pump (71) is formed. Every cross section (Sc) of the circulation channel (60) and/or every cross section (Ss) of the suction channel (70) along its entire respective length have/has a smooth rim. Additionally, a positioning assembly comprising at least one such positioning device (38) is presented. Moreover, a sheet material processing machine is introduced which comprises at least one positioning assembly.

公开(公告)号：US20230339133A1

公开(公告)日：2023-10-26

申请号：US18255169

申请日：2021-11-26

Applicant: BOBST MEX SA

Inventor： Tim LAIR ,  Jade STERNBERG ,  Amel NEUMANN

IPC: B26D7/01 ,  B65H9/08

CPC classification number: B26D7/015 ,  B26D7/018 ,  B65H9/08 ,  B65H2406/343 ,  B65H2406/351

Abstract: A positioning device (38) for holding a flat flexible part, especially a sheet, on a positioning surface (46) is presented. It comprises a body (44) having a suction opening (50) for aspiring the part and a fluid port (52) being in fluid communication with the suction opening (50). Furthermore, an abutment protrusion (60) is provided on a connection surface (48) for abutting the positioning device (38) against a base part (28) to which it may be mounted. Also a sealing protrusion (64) is arranged on the connection surface (48) for compressing a gasket (42) being interposed between the positioning device (38) and the base part (28). A height (Ha) of the abutment protrusion (60) is bigger than a height (Hs) of the sealing protrusion (64). Additionally, a positioning assembly (24) is presented which comprises at least one such positioning device (38). Furthermore, a sheet material processing machine comprising at least one such positioning assembly (24) is introduced.