Method and a system for transferring of items

• US 7,762,382 B2
• Filed: 01/09/2007
• Issued: 07/27/2010
• Est. Priority Date: 01/09/2006
• Status: Active Grant

• Current Assignee: Scanvaegt International A/S
• Original Assignee: Scanvaegt International A/S
• Inventors: Grundtvig, Henrik
• Primary Examiner(s): Hess; Douglas A
• Application Number:
  US12/160,152
• Publication Number:
  US 20090129910A1
• Time in Patent Office: 1,295 Days
• Field of Search: 198/346.2, 198/376, 198/382, 198/463.2, 198/464.1, 198/464.2, 198/468.2, 198/468.4, 198/470.1, 198/471.1, 198/617
• US Class Current: 198/382
• CPC Class Codes: B65G 2201/0202 Agricultural and processed food products
• CPC Class Codes: B65G 47/682 from a single conveyor lane consisting of one conveyor or several adjacent conveyors
• CPC Class Codes: B65G 47/684 with recirculation of articles forming a buffer
• CPC Class Codes: B65G 47/917 control arrangements
• CPC Class Codes: B65G 47/918 with at least two picking-up heads

Abstract

Method and system for transferring items (2) from an inlet flow or a bulk of items at a first area to a second area, from which the items are transferred in an orderly flow of items,

• • whereby a plurality of gripping means (18) are used for transferring said items and
  • whereby said method comprises the steps of
  • moving at least one of said plurality of gripping means (18) towards at least part of said first area or vice versa,
  • engaging one of said items by said at least one of said plurality of gripping means (18),
  • moving said engaged item away from said first area, or vice versa,
  • placing said engaged item at a selected position, and whereby
  • said item is moved away from said second area in an orderly flow with at least one further item handled by another of said plurality of gripping means.

Claims

1. A method of transferring items from a first area where said items are provided in an un-orderly form to a second area from which said items are transferred in an orderly flow of items, said method comprising the step of using a plurality of gripping means for transferring said items, said transferring including the steps of:

moving at least one of said plurality of gripping means toward at least part of said first area or moving said at least part of said first area toward said at least one of said plurality of gripping means;

engaging at least one of said items among said items provided in an un-orderly form at said first area using said at least one of said plurality of gripping means;

moving said at least one item away from said first area or moving said first area away from said at least one item; and

placing said at least one item at a selected position of said second area, wherein

said at least one item is moved away from said second area in an orderly flow with at least one additional item handled by another one of said plurality of gripping means, and wherein

a plurality of gripping carriers are used for transferring said items, each one of said plurality of gripping carriers carrying at least one of said plurality of gripping means, said plurality of gripping carriers being controlled in such a manner that they are independently movable.

2. The method according to claim 1, wherein said at least one item is released and/or placed at a selected position at said second area.

3. The method according to claim 2, wherein said step of releasing and/or placing said at least one item at a selected position comprises locating said at least one item:

at a position selected among a number of predetermined positions, or

at a position selected in relation to already located items and/or in relation to positions of other items being transferred.

4. The method according to claim 3, wherein said plurality of gripping means are adapted for, individually or in combination, controllably locating items at a predefined area constituting said second area.

5. The method according to claim 3, wherein

said at least one of said plurality of gripping means is moved toward said first area or said first area is moved toward said at least one of said plurality of gripping means, and wherein

said at least one of said gripping means is adapted for engaging said at least one item located within a predefined area comprised in said first area.

6. The method according to claim 5, wherein

said items are delivered to said first area by transport means, and wherein

said items are moving at said first area, and further wherein

an item that is not engaged by one of said plurality of gripping means when passing said first area is returned to said transport means that delivers items to said first area.

7. The method according to claim 6, wherein

the items that are delivered to said second area are transported further on by transport means, and wherein

said items delivered to said second area are delivered directly to said transport means for further transport.

8. The method according to claim 1, wherein

said at least one of said plurality of gripping means is moved toward said first area or said first area is moved toward said at least one of said plurality of gripping means, and wherein

said at least one of said gripping means is adapted for engaging said at least one item located within a predefined area comprised in said first area.

9. The method according to claim 1, wherein

said items are delivered to said first area by transport means, and wherein

said items are moving at said first area, and further wherein

an item that is not engaged by one of said plurality of gripping means when passing said first area is returned to said transport means that delivers items to said first area.

10. The method according to claim 1, wherein

the items that are delivered to said second area are transported further on by transport means, and wherein

said items delivered to said second area are delivered directly to said transport means for further transport.

21. The method of claim 1, wherein said plurality of gripping means are each adapted for engaging and holding said items by mechanical means including mechanical lifting, mechanical gripping, and/or mechanical pinching.

22. The method of claim 1, wherein said items are flaccid having a variable thickness and/or height compared to teach other, and wherein gripping means grips said items by using a vacuum source.

23. The method of claim 1, wherein said plurality of gripping carriers are mounted on a common base and wherein said plurality of gripping carriers are controlled in such a manner that they are independently movable in at least one lateral direction.

11. A system for transferring items from a first area where said items are provided in an un-orderly form to a second area, said system being adapted for transferring an orderly flow of items from said second area, said system comprising

a plurality of gripping means adapted for transferring said items;

first location means for supporting said items, wherein said items are provided in an un-orderly form at said first area; and

second location means for supporting said items at said second area, wherein

said system is adapted for;

moving at least one of said plurality of gripping means towards at least part of said first area or moving said at least part of said first area toward said at least one of said plurality of gripping means,

engaging at least one of said items among said items provided in an un-orderly form at said first area by said at least one of said plurality of gripping means,

moving said at least one of said items away from said first area, or moving said first area away from said at least one of said items, and

placing said at least one of said items at a selected position of said second area, wherein

said at least one of said items is moved away from said second area in an orderly flow with at least one additional of said items engaged by another one of said plurality of gripping means;

wherein said system further comprises a plurality of gripping carriers each one of which carries at least one of said plurality of gripping means, said plurality of gripping carriers being independently controllable.

12. The system according to claim 11, wherein said plurality of gripping means are adapted for, individually or in combination, controllably locating items at a predefined area constituting said second area at said second location means.

13. The system according to claim 12, wherein said predefined area at said first location means constitutes said first area, and wherein said at least one of said plurality of gripping means is adapted for engaging said at least one item located within said predefined area at said first location means.

14. The system according to claim 13, wherein said plurality of gripping means each comprise suction means for engaging and holding said items.

15. System according to claim 13, wherein said plurality of gripping means are each adapted for engaging and holding said items by mechanical means.

16. The system according to claim 13, wherein said first location means form part of inlet transport means for delivering items to said first area with said items being moved at said first area.

17. The system according to claim 11, wherein said first location means comprises transport means forming part of a transport loop, said transport means including a continuous conveyor belt, a circular conveyor belt, a rotating conveyor, and/or a turntable.

18. The system according to claim 11, wherein said plurality of gripping means each comprise suction means for engaging and holding said items.

19. The system according to claim 11, wherein said plurality of gripping means are each adapted for engaging and holding said items by mechanical means including mechanical lifting, mechanical gripping, and/or mechanical pinching.

20. The system according to claim 11, wherein said first location means form part of inlet transport means for delivering items to said first area with said items being moved at said first area.

24. The method of claim 11, wherein said plurality of gripping carriers are mounted on a common base and wherein said plurality of gripping carriers are controlled in such a manner that they are independently movable in at least one lateral direction.

25. The system of claim 11, wherein said items are flaccid having a variable thickness and/or height compared to teach other, and wherein gripping means grips said items by using a vacuum source.

26. A method of transferring items from a first area where said items are flaccid having an arbitrary thickness and/or height and provided in an un-orderly form to a second area from which said items are transferred in an orderly flow of items, said method comprising the step of using a plurality of gripping means for transferring said items, said transferring including the steps of:

moving at least one of said plurality of gripping means toward at least part of said first area or moving said at least part of said first area toward said at least one of said plurality of gripping means;

engaging at least one of said items among said items provided in an un-orderly form at said first area using said at least one of said plurality of gripping means;

laterally moving said at least one item away from said first area or laterally moving said first area away from said at least one item; and

placing said at least one item at a selected position of said second area, wherein

said at least one item is moved away from said second area in an orderly flow with at least one additional item handled by another one of said plurality of gripping means, and wherein

a plurality of gripping carriers mounted on a common base are used for transferring said items, each one of said plurality of gripping carriers carrying at least one of said plurality of gripping means, said plurality of gripping carriers being controlled in such a manner that they are at least partially independently movable in a lateral direction and adjust to said arbitrary thickness and/or height of said items.

27. The method of claim 26, wherein at least some of said items overlap other of said items, and wherein said gripping means are controlled to compensate for the variable height of said items due to said overlap.

28. The method of claim 26, wherein said gripping means grips said items by mechanically gripping and/or pinching said items.

29. The method of claim 26, wherein said items are flaccid having a variable thickness and/or height compared to each other, and wherein gripping means grips said items by using a vacuum source.

30. The method of claim 26, wherein items that move past said gripping means without being transferred are returned to said first area for an additional attempt at transfer by said gripping means.

31. A method of transferring items from a first area, where said items are provided in an un-orderly form across the width of said first area, to a second area from which said items are transferred in an orderly flow of items, said method comprising the step of using a plurality of gripping means for transferring said items, said transferring including the steps of:

moving at least one of said plurality of gripping means toward at least part of said first area or moving said at least part of said first area toward said at least one of said plurality of gripping means;

engaging at least one of said items among said items provided in an un-orderly form at said first area using said at least one of said plurality of gripping means;

laterally moving said at least one item away from said first area or laterally moving said first area away from said at least one item; and

placing said at least one item at a selected position of said second area, wherein

said at least one item is moved away from said second area in an orderly flow with at least one additional item handled by another one of said plurality of gripping means, and wherein

a plurality of gripping carriers mounted on a common base are used for transferring said items, each one of said plurality of gripping carriers carrying at least one of said plurality of gripping means, said plurality of gripping carriers being controlled in such a manner that they are at least partially independently movable in a lateral direction and adjust to said arbitrary placement of said items across the width of said first area.

32. The method of claim 31, wherein at least some of said items overlap other of said items, and wherein said gripping means are controlled to compensate for said overlap.

33. The method of claim 31, wherein said gripping means grips said items by mechanically gripping and/or pinching said items.

34. The method of claim 31, wherein said items are flaccid, and wherein said gripping means grips said items by using a vacuum source.

35. The method of claim 31, wherein items that move past said gripping means without being transferred are returned to said first area for an additional attempt at transfer by said gripping means.