Bobst Mex Sa

Tim Lair

Amel Neumann

Jade Sternberg

Jesse Qiu

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

Positioning device and positioning assembly for holding a flat flexible part, and sheet material processing machine

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

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Bussigny, Switzerland

Tim Lair