Processing machine and method for adjusting a processing length of a shaping unit of a processing machine

Patent metadata

Field	Value
Publication number	US-12030299-B2
Application number	US-202218285721-A
Country	US
Kind code	B2
Filing date	Apr 8, 2022
Priority date	Jul 13, 2021
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

In some examples, a processing machine for processing a substrate includes at least one shaping unit. The at least one shaping unit includes at least one forme cylinder and at least one impression cylinder. A processing point for processing a substrate is arranged between the at least one forme cylinder and the at least one impression cylinder. The processing machine includes a control unit for correcting a processing length of the substrate, and which controls a speed of at least one of the at least one forme cylinder or the at least one impression cylinder. The at least one forme cylinder and the at least one impression cylinder have a speed ratio with respect to one another that is changeable at the processing point as a function of the processing length of the substrate, and the speed ratio differs at least once within a full cylinder revolution.

First claim

The invention claimed is:

1. A processing machine ( 01 ) for processing a substrate ( 02 ) comprising at least one shaping unit ( 900 ), the at least one shaping unit ( 900 ) comprising at least one forme cylinder ( 901 ) and at least one impression cylinder ( 902 ), a processing point ( 910 ) for processing a substrate ( 02 ) being located between the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ), the processing machine ( 01 ) comprising at least one control unit ( 1201 ) for correcting a processing length (BL) which controls in an open loop and/or a closed loop a speed (v 1 ; v 2 ; ω 1 ; ω 2 ) of the at least one forme cylinder ( 901 ) and/or of the at least one impression cylinder ( 902 ), the speed (v 1 ; ω 1 ) of the at least one forme cylinder ( 901 ) and the speed (v 2 ; ω 2 ) of the at least one impression cylinder ( 902 ) having a speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) with respect to one another, and the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) being changeable and/or changed at the processing point ( 910 ) by means of the control unit ( 1201 ) as a function of the processing length (BL) of a substrate ( 02 ), characterized in that the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) for correcting the processing length (BL) differs at least once within a full cylinder revolution.

2. The processing machine according to claim 1 , characterized in that the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) differs at least once within a full cylinder revolution in the region of a working surface ( 909 ) of a shaping tool ( 915 ).

3. The processing machine according to claim 2 , characterized in that the working surface ( 909 ) of the at least one shaping tool ( 915 ) comprises several sections for processing multiple-ups ( 1101 ) of the one substrate ( 02 ) which are arranged one behind the other.

4. The processing machine according to claim 1 , characterized in that the at least one forme cylinder ( 901 ; 616 ) and the at least one impression cylinder ( 902 ; 617 ) have a first speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) when one of the plurality of sections of the working surface ( 909 ) passes through the processing point ( 910 ), and the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ) have a second speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) that differs from the first when another section of the working surface ( 909 ) passes through the processing point ( 910 ) and/or that the number of the speed ratios (v 1 /v 2 ; ω 1 /ω 2 ) can be adapted and/or is adapted to the number of sections within a full cylinder revolution.

5. The processing machine according to claim 1 , characterized in that the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ), at a first processing length (BL), during a cylinder revolution have a first speed ratio (v 1 /v 2 ; ω 1 /ω 2 ), and the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ), at a second different processing length (BL) of a substrate ( 02 ), have a second different speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) and/or that the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ) during a first revolution have a first speed ratio (v 1 /v 2 ; ω 1 /ω 2 ), and the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ) during another revolution have a second different speed ratio (v 1 /v 2 ; ω 1 /ω 2 ).

6. The processing machine according to claim 1 , characterized in that the at least one shaping unit ( 900 ) is configured as a die-cutting unit ( 900 ) and/or that the at least one control unit ( 1202 ) is arranged so as to be functionally connected to at least one inspection device ( 916 ) and/or that the processing machine ( 01 ) comprises at least one application unit ( 600 ), which comprises a device for correcting the printing length, and/or that the at least one control unit ( 1202 ), for controlling in an open loop and/or a closed loop a processing length (BL), is arranged so as to be functionally connected to a further control unit ( 1203 ) of at least one application unit ( 600 ) of the processing machine ( 01 ) which controls in an open loop or a closed loop a printing length (l 1 ).

7. The processing machine according to claim 1 , characterized in that the at least one forme cylinder ( 901 ) and the at least one impression cylinder ( 902 ) have a different speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) when each section of the working surface ( 909 ) passes through the processing point ( 910 ) and/or that the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) in each section can be adjusted as a function of a correction value for correcting a processing length (BL) and/or that the at least one control unit ( 1202 ) is configured so as to correct a processing length (BL) of a substrate ( 02 ) in sections (BL 1 ; BL 2 ; BL 3 . . . ) and/or that the speed ratios (v 1 /v 2 ; ω 1 /ω 2 ) behave identically over several successive cylinder revolutions.

8. The processing machine according to claim 1 , characterized in that the at least one control unit ( 1202 ), for correcting the processing length (BL), is arranged so as to transfer the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) of the cylinders ( 901 ; 902 ) from a first speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) to a second speed ratio (v 1 /v 2 ; ω 1 /ω 2 ), as a function of a deviation of an actual state of a processing length (BL) from a target state of a processing length (BLref) and/or that, when a deviation of a processing length (BL) from a target value (BLref) is present, the cylinders ( 901 ; 902 ) are arranged so as to be transferred from a first speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) to a second speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) by means of a correction value.

9. The processing machine according to claim 1 , characterized in that the at least one control unit ( 1202 ) is arranged so as to control in an open loop and/or a closed loop at least the at least one impression cylinder ( 902 ), and that the speed ratio (v 1 /v 2 ; ω 1 /ω 2 ) differs several times as a result of acceleration and/or deceleration of the at least one impression cylinder ( 902 ).

10. A method for adjusting a processing length (BL) of a substrate ( 02 ) by means of a shaping unit ( 900 ) of a processing machine ( 01 ), the at least one shaping unit ( 900 ) comprising at least one forme cylinder ( 901 ), the at least one forme cylinder ( 901 ), during processing, having a speed (v 1 ; ω 1 ) when a processing point ( 910 ) is passed through, a substrate ( 02 ) being moved at a transport speed (v 3 ) in the processing point ( 910 ), the speed (v 1 ; ω 1 ) of the at least one forme cylinder ( 901 ) having a ratio with respect to the transport speed (v 3 ) of the substrate ( 02 ), and the processing length (BL) of the substrate ( 02 ) being adjusted by means of a control unit ( 1201 ) by changing the speed ratio (v 1 /v 3 ; ω 1 /v 3 ) between the forme cylinder ( 901 ) and the substrate ( 02 ) at the processing point ( 910 ), characterized in that the speed ratio (v 1 /v 3 ; ω 1 /v 3 ) between the at least one forme cylinder ( 901 ) and the substrate ( 02 ) is changed at least once within a full cylinder revolution when a working surface ( 909 ) passes through the processing point ( 910 ).

11. The method according to claim 10 , characterized in that the speed ratio (v 1 /v 3 ; ω 1 /v 3 ) between the at least one forme cylinder ( 901 ) and the substrate ( 02 ) is changed several times within a full cylinder revolution when the working surface ( 909 ) passes through the processing point ( 910 ) and/or that the speed ratio (v 1 /v 3 ; ω 1 /v 3 ) between the at least one forme cylinder ( 901 ) and the substrate ( 02 ) is maintained over several successive cylinder

Assignees

• Koenig & Bauer Ag

Inventors

• Deppisch Bastian
• Müller Torsten
• Schneider Thomas

Classifications

• B41F33/0036

  Devices for scanning or checking the printed matter for quality control · CPC title

• B41F13/56

  Folding or cutting · CPC title

• B26F1/44

  Cutters therefor; Dies therefor · CPC title

• B26F1/384

  using rotating drums · CPC title

• B26F1/38

  Cutting-out; Stamping-out · CPC title