Destacking system for cardboard blanks

Patent metadata

Field	Value
Publication number	US-12269235-B2
Application number	US-202318104387-A
Country	US
Kind code	B2
Filing date	Feb 1, 2023
Priority date	Feb 1, 2022
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A destacking system for cardboard blanks comprises a deposition unit for cardboard blanks with first and second deposition positions, a first destacker comprising a first stacking magazine for accommodating a first stack of cardboard blanks, a first retaining system for retaining the cardboard blanks at a first stacking position, and a first conveying unit with a first gripper to grip a first cardboard blank of the first destacker at the first stacking position and convey the first cardboard blank to the first deposition position, a second destacker comprising a second stacking magazine for accommodating a second stack of cardboard blanks, a second retaining system for retaining the cardboard blanks at a second stacking position, and a second conveying unit with a second gripper configured to grip a second cardboard blank of the second destacker at the second stacking position and convey the second cardboard blank to the second deposition position.

First claim

What is claimed is:

1. A destacking system for cardboard blanks, comprising:
a deposition unit for cardboard blanks with a first deposition position and a second deposition position;
a first destacker comprising a first stacking magazine for accommodating a first stack of cardboard blanks, a first retaining system for retaining the cardboard blanks at a first stacking position, and a first conveying unit with a first gripper configured to grip a first cardboard blank of the first destacker at the first stacking position and convey the first cardboard blank to the first deposition position; and
a second destacker comprising a second stacking magazine for accommodating a second stack of cardboard blanks, a second retaining system for retaining the cardboard blanks at a second stacking position, and a second conveying unit with a second gripper configured to grip a second cardboard blank of the second destacker at the second stacking position and convey the second cardboard blank to the second deposition position;
wherein a minimum distance between a first receiving side of the first stacking magazine and a first receiving side of the second stacking magazine is larger than a minimum distance between a first deposition area at the first deposition position and a second deposition area at the second deposition position.

2. The destacking system according to claim 1 , wherein an angle is provided between a first center axis of the first destacker and a second center axis of the second destacker, the angle having a value of 0° to 45.

3. The destacking system according to claim 2 , wherein the angle has a value of 10° to 30°.

4. The destacking system according to claim 1 , wherein the first conveying unit is configured to move the first gripper in a rectilinear path at least between the first stacking position and the first deposition position.

5. The destacking system according to claim 1 , wherein the first conveying unit is configured to move the first gripper in an arcuate path at least between the first stacking position and the first deposition position.

6. The destacking system according to claim 1 , wherein the second conveying unit is configured to move the second gripper in a rectilinear path at least between the second stacking position and the second deposition position.

7. The destacking system according to claim 1 , wherein the second conveying unit is configured to move the second gripper in an arcuate path at least between the second stacking position and the second deposition position.

8. The destacking system according to claim 1 , wherein the deposition unit has a first passage opening at the first deposition position, the first conveying unit being configured to move at least a portion of the first gripper through the first passage opening, wherein the deposition unit has a third passage opening at the second deposition position, the second conveying unit being configured to move at least a portion of the second gripper through the third passage opening.

9. The destacking system according to claim 1 , wherein the deposition unit has, at the first deposition position, a first trough for receiving and shaping cardboard blanks, and, at the second deposition position, a second trough for receiving and shaping cardboard blanks.

10. The destacking system according to claim 9 , wherein the first gripper is configured to grip the first cardboard blank of the first destacker at the first stacking position by suction and to pull the first cardboard blank into the first trough, the second gripper being configured to grip the second cardboard blank of the second destacker at the second stacking position by suction and to pull the second cardboard blank into the second trough.

11. The destacking system according to claim 1 , wherein the first destacker comprises a first die including a first receiving mold for receiving and shaping cardboard blanks, the first die having a first opening, wherein the first conveying unit is configured to move a portion of the first gripper through the first opening.

12. The destacking system according to claim 1 , wherein the second destacker comprises a second die including a second receiving mold for receiving and shaping cardboard blanks, the second die having a second opening, wherein the second conveying unit is configured to move a portion of the second gripper through the second opening.

13. A thermoform packaging machine or a tray sealer comprising the destacking system for cardboard blanks according to claim 1 .

14. A method of destacking cardboard blanks, the method comprising:
providing a first destacker comprising a first stacking magazine for accommodating a first stack of cardboard blanks, a first retaining system for retaining the cardboard blanks at a first stacking position, and a first conveying unit;
providing a second destacker comprising a second stacking magazine for accommodating a second stack of cardboard blanks, a second retaining system for retaining the cardboard blanks at a second stacking position, and a second conveying unit;
providing a deposition unit having a first deposition position and a second deposition position;
gripping a first cardboard blank of the first destacker at the first stacking position by a first gripper of the first conveying unit and conveying the first cardboard blank to the first deposition position; and
gripping a second cardboard blank of the second destacker at the second stacking position by a second gripper of the second conveying unit and conveying the second cardboard blank to the second deposition position;
wherein a minimum distance between a first receiving side of the first stacking magazine and a first receiving side of the second stacking magazine is larger than a minimum distance between a first deposition area at the first deposition position and a second deposition area at the second deposition position.

15. The method according to claim 14 , wherein an angle between a first center axis of the first destacker and a second center axis of the second destacker has a value of 0° to 45°, or is adjusted.

16. The method according to claim 15 , wherein the angle has a value of 10° to 30°.

17. The method according to claim 14 , wherein an angle between a first center axis of the first destacker and a second center axis of the second destacker is adjustable in a range of 0° to 45°.

18. The method according to claim 14 , wherein the first gripper is moved in a rectilinear path or an arcuate path at least between the first stacking position and the first deposition position and/or the second gripper is moved in a rectilinear path or an arcuate path at least between the second stacking position and the second deposition position.

19. A destacking system for cardboard blanks, comprising:
a deposition unit for cardboard blanks with a first deposition position and a second deposition position;
a first destacker comprising a first stacking magazine for accommodating a first stack of cardboard blanks, a first retaining system for retaining the cardboard blanks at a first stacking position, and a first conveying unit with a first gripper configured to grip a first cardboard blank of the first destacker at the first stacking position and convey the first cardboard blank to the first deposition position; and
a second destacker comprising a second stacking magazine for accommodating a second stack of cardboard blanks, a second retaining system for retaining the cardboard blanks at a second stacking position, and a second conveying unit with a second gripper c

Assignees

• Multivac Haggenmueller Kg

Inventors

• Patz Dominik
• Maier Robert
• Hoepner Bernd
• Adermann Philipp

Classifications

• B31B50/592

  using punches or dies · CPC title

• B31B50/07

  by air pressure or suction · CPC title

• B31B50/005

  involving a particular layout of the machinery or relative arrangement of its subunits · CPC title

• B65H2405/111

  Bottom · CPC title

• B65H2405/13

  Elements acting on corner of sheet, e.g. snubber member · CPC title