Method of grouping sheet units belonging to sheet groups, a grouping unit and a sheet handling system
AssigneeBowe Systec AG
InventorFranz Schwab
Life of this patent
Estimating the term…
Abstract
A method of grouping sheet units, which belong together in sheet groups, a sheet stream comprising two superposed sheet units each by means of a grouping unit, a grouping unit for a sheet handling system, and a sheet handling system that allow a high processing speed and a high cycle efficiency of a sheet handling system are disclosed. A sheet unit can be held back in the grouping unit. Depending on whether the downstream subsequent sheet units transferred into the grouping unit belong to a sheet group, the held-back sheet unit can be released by itself and together with one or together with both downstream subsequent sheet units.
Claims20
A method of grouping sheet units, which belong together in sheet groups, of a sheet stream comprising two superposed sheet units each, the method comprising:
- a) transferring the superposed sheet units into a grouping unit;
- b) transferring the superposed sheet units into a collecting station disposed downstream of the grouping unit if the sheet units transferred into the grouping unit belong to the same sheet group;
- c) otherwise:
- transferring a sheet unit into the collecting station and holding the other sheet unit back in the grouping station, with the following provisos:
- i) transferring the held-back sheet unit into the collecting station if this sheet unit is not part of a sheet group of one of the sheet units to be transferred next into the grouping unit;
- ii) transferring the held-back sheet unit into the collecting station together with both sheet units to be transferred next into the grouping unit if both sheet units to be transferred next into the grouping unit belong to the sheet group of the held-back sheet unit;
- iii) otherwise:
- transferring the held-back sheet unit together with the sheet unit belonging to the same sheet group of the sheet units to be transferred next into the grouping unit and holding the other sheet unit back in the grouping unit and continuing the method with one of the processing steps i) to iii).
A grouping unit for a sheet handling system, the grouping unit comprising:
- a transporting system for transporting sheet units of a sheet stream comprising two superposed sheet units each from an input of the grouping unit to an output of the grouping unit;
- and
- a holding unit,
- wherein the grouping unit groups the sheet units, which belong together in sheet groups,
- a sheet unit can be held back in the grouping unit, and
- the grouping unit is designed to release the held-back sheet unit by itself and to release it together with one of two downstream subsequent sheet units and to release it with both downstream subsequent sheet units.
A grouping unit for a sheet handling system, the grouping unit comprising:
- a transporting system for transporting sheet units of a sheet stream consisting of two sheet units each from an input of the grouping unit to an output of the grouping unit;
- and
- a holding unit,
- wherein the grouping unit groups the sheet units, which belong together in sheet groups,
- a sheet unit can be held back in the grouping unit,
- the grouping unit is designed to release the held-back sheet unit by itself and to release it together with one of two downstream subsequent sheet units and to release it with both downstream subsequent sheet units, and
- the holding unit comprises a suction device.
Dependencies are inferred from the claim text.