Sheet delivery unit, a sheet processing machine and a method for operating a sheet processing machine

Patent metadata

Field	Value
Publication number	US-11208287-B2
Application number	US-202017259981-A
Country	US
Kind code	B2
Filing date	Jan 27, 2020
Priority date	Feb 5, 2019
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A sheet delivery unit has at least one rear sheet stop. The sheet delivery unit has at least one forward stack limiter. The sheet delivery unit has at least one upper sheet transportation system, designed for hanging transportation of sheets, with at least one imbrication device for the imbricated, hanging transportation of at least two sheets. A sheet processing machine is also disclosed. A method is disclosed for operating a sheet processing machine. Processed substrate in the form of a sequence of sheets spaced apart from one another in a transportation direction, is supplied in this transportation directed to a sheet delivery unit of the sheet processing machine. At least during a sheet braking procedure, at least at times, at least two sheets are guided in a hanging manner by the use of an upper sheet transportation system, configured for the hanging transportation of sheets, of the sheet delivery unit, and are transported in an imbricated arrangement at least also in the transportation direction.

First claim

The invention claimed is:

1. A sheet delivery unit ( 1000 ), wherein the sheet delivery unit ( 1000 ) has at least one rear sheet stop ( 03 ), and wherein the sheet delivery unit ( 1000 ) has at least one forward pile limiter ( 04 ), and wherein a delivery pile area is delimited at least by the at least one rear sheet stop ( 03 ) and the at least one forward pile limiter ( 04 ), and wherein the sheet delivery unit ( 1000 ) has at least one upper sheet transport system ( 06 ) configured for the hanging transport of sheets ( 02 ), which has at least one imbricating device ( 46 ) and at least one sheet infeed means ( 08 ) configured as an upper suction transport means ( 08 ), and at least one sheet decelerating means ( 07 ) configured as an upper suction transport means ( 07 ), and wherein the at least one imbricating device ( 46 ) serves to produce imbrication for an imbricated, hanging transport of at least two sheets ( 02 ) at at least one point located above the delivery pile area as viewed in the vertical direction (V), characterized in that the sheet delivery unit ( 1000 ) has at least one dropping means ( 32 ), which can be moved between at least one standby position and at least one dropping position, and in that, in the at least one standby position of the at least one dropping means, the at least one dropping means ( 32 ) is positioned fully above a part of a transport surface ( 22 ) of the at least one sheet decelerating means ( 07 ) that contributes to establishing a transport path provided for the transport of sheets ( 02 ), and in that, in the at least one dropping position of the at least one dropping means, the at least one dropping means ( 32 ) protrudes at least partially downward to a point below said part of the transport surface ( 22 ) of the at least one sheet decelerating means ( 07 ).

2. A sheet delivery unit ( 1000 ), wherein the sheet delivery unit ( 1000 ) has at least one rear sheet stop ( 03 ), and wherein the sheet delivery unit ( 1000 ) has at least one forward pile limiter ( 04 ), and wherein a direction of transport (T) is a horizontal direction (T) that is oriented from the forward pile limiter ( 04 ) toward the rear sheet stop ( 03 ), and wherein the sheet delivery unit ( 1000 ) has at least one upper sheet transport system ( 06 ) configured for the hanging transport of sheets ( 02 ), which comprises at least one sheet infeed means ( 08 ) configured as an upper suction transport means ( 08 ) and at least one sheet decelerating means ( 07 ) configured as an upper suction transport means ( 07 ), and wherein the at least one sheet infeed means ( 08 ) is arranged at least partially upstream of the at least one sheet decelerating means ( 07 ) with respect to the direction of transport (T), and wherein at least one downwardly acting, activatable displacement element ( 12 ) is arranged such that a displacement region of the at least one downwardly acting, activatable displacement element overlaps at least partially with respect to the direction of transport (T) with a transporting section, determined by the at least one sheet infeed means ( 08 ), of a transport path provided for the transport of sheets ( 02 ) characterized in that the sheet delivery unit ( 1000 ) has at least one dropping means ( 32 ), which can be moved between at least one standby position and at least one dropping position, and in that in the at least one standby position of the sheet delivery unit, the at least one dropping means ( 32 ) is positioned fully above a part of a transport surface ( 22 ) of the at least one sheet decelerating means ( 07 ) that contributes to establishing a transport path provided for the transport of sheets ( 02 ), and in that, in the at least one dropping position of the at least one dropping means, the at least one dropping means ( 32 ) protrudes at least partially downward to a point below said part of the transport surface ( 22 ) of the at least one sheet decelerating means ( 07 ).

3. The sheet delivery unit according to claim 1 , characterized in that a direction of transport (T) is a horizontal direction (T) that is oriented from the forward pile limiter ( 04 ) toward the rear sheet stop ( 03 ), and in that the at least one upper sheet transport system ( 06 ) configured for the hanging transport of sheets ( 02 ) has at least one sheet infeed means ( 08 ) configured as an upper suction transport means ( 08 ) and at least one sheet decelerating means ( 07 ) configured as an upper suction transport means ( 07 ), and in that the at least one sheet infeed means ( 08 ) is arranged at least partially upstream of the at least one sheet decelerating means ( 07 ) with respect to the direction of transport (T), and in that at least one downwardly acting, activatable displacement element ( 12 ) is arranged such that a displacement region of the at least one downwardly acting activatable displacement element overlaps at least partially with respect to the direction of transport (T) with a transporting section, determined by the at least one sheet infeed means ( 08 ), of a transport path provided for the transport of sheets ( 02 ).

4. The sheet delivery unit according to claim 2 , characterized in that a delivery pile area is delimited at least by the at least one rear sheet stop ( 03 ) and the at least one forward pile limiter ( 04 ), and in that the at least one upper sheet transport system ( 06 ) configured for the hanging transport of sheets ( 02 ) has at least one imbricating device ( 46 ), and in that the at least one imbricating device ( 46 ) serves to produce imbrication for an imbricated, hanging transport of at least two sheets ( 02 ) at at least one point located above the delivery pile area as viewed in the vertical direction (V).

5. The sheet delivery unit according to claim 2 , characterized in that the at least one displacement element ( 12 ) is a component of an imbricating device ( 46 ) and/or in that the at least one sheet infeed means ( 08 ) is configured as a passively driven suction transport means ( 08 ) and/or as a sliding suction device, and/or in that at least one decelerating means drive ( 19 ) is provided, by means of which the at least one sheet decelerating means ( 07 ) can be driven.

6. The sheet delivery unit according to claim 2 , characterized in that the at least one displacement element ( 12 ) is configured as at least one displacement member ( 12 ), the position of which can be changed between at least one pass-through position and at least one displacement position, at least by means of at least one displacement drive ( 27 ), and/or in that the at least one displacement element ( 12 ) is configured as at least one displacement lever ( 12 ), which is arranged so as to rotate about a displacement axis ( 17 ), and/or in that the at least one displacement member ( 12 ), at least in at least one displacement position, is arranged at least partially upstream of the at least one forward pile limiter ( 04 ) and/or upstream of the at least one sheet decelerating means ( 07 ), with respect to the direction of transport (T), and/or in that the at least one displacement element ( 12 ) is configured as at least one displacement opening ( 12 ) configured to emit a fluid.

7. The sheet delivery unit according to claim 2 , characterized in that the at least one sheet infeed means ( 08 ) extends beyond the at least one forward pile limiter ( 04 ), and/or in that the at least one sheet decelerating means ( 07 ) is arranged entirely downstream of the at least one forward pile limiter ( 04 ) on the transport path provided for the transport of sheets ( 02 ) and/or with respect to the direction of transport (T), and/or in that the at least one sheet infeed means ( 08 ) is arranged at least partially upstream of the at least one forward pile limiter ( 04 ) on the transport path provid

Assignees

• Koenig & Bauer Ag

Inventors

• Deppisch Bastian

Classifications

• B65H2801/21

  Industrial-size printers, e.g. rotary printing press · CPC title

• B65H2701/1762

  Corrugated · CPC title

• B65H29/6627

  in combination with auxiliary means for overlapping articles · CPC title

• B65H2406/323

  Overhead suction belt, i.e. holding material against gravity · CPC title

• B65H2406/3122

  Rollers · CPC title