Sheet processing machine comprising at least one transport means of an infeed system and method for changing the relative position of a transport means of an infeed system

Patent metadata

Field	Value
Publication number	US-11643295-B2
Application number	US-202017766293-A
Country	US
Kind code	B2
Filing date	Oct 15, 2020
Priority date	Nov 4, 2019
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

In some examples, a sheet processing machine includes at least one transport means of an infeed system, and the infeed system includes at least one cam mechanism including, in each case, at least one cam disk having an axis of rotation. At least one scanning element is arranged in each case to rest against the at least one cam disk. The at least one scanning element is connected to the at least one transport means via at least one drive lever. The at least one drive lever in each case has at least one mounting point. The mounting point and the axis of rotation may be adjusted relative to one another, and a position displacement of the mounting point relative to the axis of rotation may compensate for at least one position error of the at least one sheet.

First claim

The invention claimed is:

1. A sheet processing machine ( 01 ) comprising at least one transport means ( 204 ) of an infeed system ( 202 ), the at least one transport means ( 204 ) comprising at least one transfer element ( 206 ; 207 ), the infeed system ( 202 ) comprising at least one cam mechanism comprising in each case at least one cam disk ( 212 ) and an axis of rotation (D) of the at least one cam disk ( 212 ), the at least one cam mechanism being driven by at least one drive ( 1001 ) via at least one drive shaft ( 1002 ), at least one scanning element ( 213 ) being arranged in each case to rest against the at least one cam disk ( 212 ), the at least one scanning element ( 213 ) being connected to the at least one transport means ( 204 ) via at least one drive lever ( 214 ), the at least one drive lever ( 214 ) in each case having at least one mounting point (S), the at least one mounting point (S) and the axis of rotation (D) being configured to be adjustable and/or to be adjusted and/or to adjust relative to one another, the at least one mounting point (S) and the axis of rotation (D) being configured to be pivotable and/or to be pivoted and/or to pivot relative to one another, characterized in that a position displacement of the at least one mounting point (S) relative to the axis of rotation (D) is configured to compensate for at least one position error of at least one sheet ( 02 ), that at least one servo drive ( 218 ) is configured to adjust the at least one mounting point (S) relative to the axis of rotation (D), that the at least one servo drive ( 218 ) is configured to intervene in a movement that is transmitted from the at least one drive shaft ( 1002 ) to the at least one transport means ( 204 ), that the sheet processing machine ( 01 ) comprises at least one transport system ( 1200 ) that is arranged downstream from the infeed system ( 202 ) in a transport direction (T), including at least two holding elements ( 1202 ) that are spaced apart from one another orthogonally to the transport direction (T), that one of the at least two holding elements ( 1202 ) is in each case spaced apart from a respective assigned transfer element ( 206 ; 207 ), in a transfer position (PU), at a first distance in the transport direction (T), that, by adjusting the at least one mounting point (S) and the axis of rotation (D) relative to one another, the one holding element ( 1202 ) of the at least two holding elements ( 1202 ) is spaced apart from the respective assigned transfer element ( 206 ; 207 ) at a second distance in the transfer position (PU), and that the second distance is different from the first distance.

2. The sheet processing machine according to claim 1 , characterized in that a relative position of the at least one transport means ( 204 ) is configured to be changeable and/or to be changed by the relative pivoting of the at least one mounting point (S) and of the axis of rotation (D) with respect to one another and/or that the at least one drive lever ( 214 ) is configured to have at least one rotational movement of the at least one cam mechanism scanned by the at least one scanning element ( 213 ) and is configured to convert the at least one rotational movement of the at least one cam mechanism into a linear movement of the at least one transport means ( 204 ).

3. The sheet processing machine according to claim 1 , characterized in that the at least one servo drive ( 218 ) is independent of the at least one drive shaft ( 1002 ) and/or that the at least one servo drive ( 218 ) is configured to superimpose a movement that is transmitted from the at least one drive shaft ( 1002 ) to the at least one transport means ( 204 ) and/or that the at least one drive ( 1001 ) of the at least one drive shaft ( 1002 ) of the at least one cam mechanism is mechanically connected to at least one drive of the transport system ( 1200 ) arranged downstream from the infeed system ( 202 ) in the transport direction (T) of sheets ( 02 ).

4. The sheet processing machine according to claim 1 , characterized in that the sheet processing machine ( 01 ) comprises at least one sensor device ( 251 ) comprising at least two sensors ( 252 ), the at least two sensors ( 252 ) being configured to selectively detect at least one edge ( 07 ; 08 ; 09 ) and/or at least one printing mark ( 11 ) of sheets ( 02 ), and/or that the at least one cam mechanism is configured as a dual cam mechanism comprising at least two of the cam disks ( 212 ).

5. The sheet processing machine according to claim 1 , characterized in that the at least one cam disk ( 212 ) in each case comprises at least two regions, wherein regions of the at least two regions that abut one another have different radii, and/or that a cam function of a circumference of the at least one cam disk ( 212 ) is continuously differentiable in all points along an arc length thereof, and/or that the at least one cam disk ( 212 ) of the at least one cam mechanism is in each case configured to carry out a complete rotation about the axis of rotation (D) per machine cycle.

6. The sheet processing machine according to claim 1 , characterized in that the sheet processing machine ( 01 ) is configured as a flat-bed die-cutting machine ( 01 ), or that the at least one servo drive ( 218 ) is configured as an electric drive and/or an actuator and/or an electric motor, or that the at least one transport means ( 204 ) is configured as at least one gripper ( 204 ), or that the at least one transport means ( 204 ) has a straight guidance and/or a linear guidance, or that the infeed system ( 202 ) comprises at least two of the transport means ( 204 ) that are spaced apart from one another and arranged horizontally next to one another in the transport direction (T).

7. The sheet processing machine according to claim 1 , characterized in that the at least one transport means ( 204 ) is movable and/or is moved horizontally along a transport path in the transport direction (T) and/or counter to the transport direction (T), and/or that the at least one transport means ( 204 ) is configured to move in and/or counter to the transport direction T by a profile of the at least one cam disk ( 212 ), and/or that the at least one transport means ( 204 ) is configured to move in and/or counter to the transport direction (T) by the at least one drive lever ( 214 ) being pivoted about the at least one mounting point (S).

8. The sheet processing machine according to claim 1 , characterized in that the infeed system ( 202 ), in the transport direction (T), comprises at least two front lay marks ( 203 ) arranged parallel to one another, which are configured to roughly align at least one sheet ( 02 ) in an alignment position (PA), and at least one servo drive ( 218 ), which is configured to finely align sheets ( 02 ).

9. The sheet processing machine according to claim 1 , characterized in that the infeed system ( 202 ) comprises two of the cam mechanisms, which are arranged parallel to one another in the transport direction (T), on the at least one drive shaft ( 1002 ) and in that the infeed system ( 202 ) comprises at least two of the servo drives ( 218 ), which are independent of the drive shaft ( 1002 ) and are each assigned to one of the cam mechanisms.

10. The sheet processing machine according to claim 9 , characterized in that at least one servo drive ( 218 ) of the at least two servo drives ( 218 ) is configured to be activatable and/or activated and/or controllable by closed-loop control and/or controlled by closed-loop control during a compensation of at least one skewed position of the sheet ( 02 ), and that at least two servo drives ( 218 ) of the at least two servo drives ( 218 ) are configured to be activatable and/or activated and/or con

Assignees

• Koenig & Bauer Ag

Inventors

• Reinsch Carsten
• Pilz Christian
• Rieck Heike

Classifications

• B65H5/10 Primary

  Reciprocating or oscillating grippers {, e.g. suction or gripper tables} · CPC title

• B65H2301/44718

  reciprocated in rectilinear paths · CPC title

• B65H2301/44712

  carried by chains or bands · CPC title

• B65H2301/44331

  at particular portion of handled material · CPC title

• B65H2511/514

  Particular portion of element · CPC title