Device and method for moving transport elements in a container treatment system

• US 10,167,143 B2
• Filed: 08/13/2014
• Issued: 01/01/2019
• Est. Priority Date: 09/13/2013
• Status: Active Grant

• Current Assignee: Krones AG (Krones)
• Original Assignee: Krones AG (Krones)
• Inventors: Senn, Konrad, Wahl, Matthias, Hifinger, Toni, Walter, Ralf
• Primary Examiner(s): Logan, Kyle O
• Application Number:
  US14/913,224
• Publication Number:
  US 20160207717A1
• Time in Patent Office: 1,602 Days
• Field of Search: 700214
• CPC Class Codes: B41J 3/40733 Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
• CPC Class Codes: B65G 2811/0673 Control of conveying operations
• CPC Class Codes: B65G 37/02 Flow-sheets for conveyor combinations in warehouses, magazines or workshops
• CPC Class Codes: B65G 43/10 Sequence control of conveyors operating in combination
• CPC Class Codes: B65G 54/02 electrostatic, electric, or magnetic

Abstract

A method for adapting motion profiles of a plurality of individually controllable transport elements for transporting containers in a container treatment system along a transport path, wherein the plurality of transport elements are movably arranged along the transport path, the method includes the following steps: determining a treatment state of at least one container carried along by a first transport element, and/or determining an operational state of at least one first container treatment unit which is arranged downstream with respect to a position of the first transport element along the transport path, wherein the first transport element is moved by an open- and/or closed-loop control unit of the container treatment system as part of a stream of transport elements, and wherein the motion profile of the first transport element is adapted by the open- and/or closed-loop control unit in response to the determined treatment state and/or the determined operational state.

Claims

1. A method for adapting motion profiles of a plurality of individually controllable transport elements for transporting containers in a container treatment system along a transport path, wherein the plurality of transport elements are movably arranged on the transport path, comprising:

determining a treatment state of at least one container carried along by a first transport element among the plurality of transport elements,

wherein the first transport element is moved by means of at least one of an open- or closed-loop control unit of the container treatment system as part of a stream of transport elements,

wherein a motion profile of the first transport element is adapted by means of the open- or closed-loop control unit in response to the determined treatment state, the motion profile being one of the motion profiles of the plurality of individually controllable transport elements,

wherein determining the treatment state of the container carried along by the first transport element comprises comparing the determined treatment state with a predetermined desired treatment state, and

wherein the motion profile of the first transport element in case of a deviation of the determined treatment state from the predetermined desired treatment state is adapted such that a distance of the first transport element from a second transport element directly preceding the first transport element in the stream is reduced to a predetermined distance.

2. The method according to claim 1, wherein the movement of the plurality of transport elements takes place at least in part by magnetic interaction of the respective transport element with the transport path.

3. The method according to claim 1,

wherein the predetermined distance corresponds to half of a predetermined division of the stream of transport elements along at least a part of the transport path.

4. The method according to claim 1, further comprising unloading the first transport element from the container carried along upon deviation of the determined treatment state from the predetermined desired treatment state.

5. The method according to claim 1,

wherein the treatment state of the container carried along by the first transport element is determined in an infeed to at least one container treatment unit, and

wherein the predetermined desired treatment state is predetermined in response to a position of the first transport element along the transport path.

6. The method according to claim 1, wherein the motion profile of the first transport element is not adapted in case of no deviation of the determined treatment state from the predetermined desired treatment state.

7. The method according to claim 1, wherein a position of the first transport element is determined by means of a plurality of sensors, which are arranged along the transport path.

8. The method according to claim 7, wherein in determining the position of the first transport element, the plurality of sensors includes magnetic field sensors.

9. The method according to claim 1, further comprising:

determining an operational state of at least one first container treatment unit which is arranged downstream with respect to a position of the first transport element along the transport path,

wherein determining the operational state of the first container treatment unit comprises comparing the determined operational state with a predetermined desired operational state, and

wherein the motion profile of the first transport element upon deviation of the determined operational state from the predetermined desired operational state is adapted such that the first transport element bypasses the first container treatment unit along a bypass section of the transport path.

10. The method according to claim 9,

wherein the motion profile of the first transport element is further adapted such that the first transport element after bypassing the first container treatment unit is supplied to a second container treatment unit arranged along the transport path downstream of the first container treatment unit.

11. The method according to claim 9,

wherein the motion profile of the first transport element is further adapted such that the first transport element is buffered at least temporarily along the bypass section.

12. The method according to claim 9, further comprising:

determining again an operational state of the first container treatment unit and comparing the operational state determined again with the predetermined desired operational state, and

returning the first transport element to an infeed of the first container treatment unit if the operational state determined again corresponds to the predetermined desired operational state.

13. A method for adapting motion profiles of a plurality of individually controllable transport elements for transporting containers in a container treatment system along a transport path, wherein the plurality of transport elements are movably arranged on the transport path, comprising:

determining a treatment state of at least one container carried along by a first transport element among the plurality of transport elements,

wherein the first transport element is moved by means of at least one of an open- or closed-loop control unit of the container treatment system as part of a stream of transport elements,

wherein a motion profile of the first transport element is adapted by means of at least one of the open- or closed-loop control unit in response to the determined treatment state, the motion profile being one of the motion profiles of the plurality of individually controllable transport elements,

wherein determining the treatment state of the container carried along by the first transport element comprises comparing the determined treatment state with a predetermined desired treatment state,

wherein adapting the motion profile of the first transport element upon deviation of the determined treatment state from the predetermined desired treatment state comprises ejecting the first transport element out of the stream of transport elements, and

wherein the method further comprises adapting a motion profile of at least one of a second transport element directly preceding the first transport element in the stream before ejection of the first transport element, and a third transport element directly succeeding the first transport element in the stream before ejection of the first transport element, in such a manner that a distance of the third transport element from the second transport element is reduced to a predetermined distance.

14. The method according to claim 13,

wherein the predetermined distance corresponds to a predetermined division of the stream of transport elements along at least a part of the transport path.

15. A method for adapting motion profiles of a plurality of individually controllable transport elements for transporting containers in a container treatment system along a transport path, wherein the plurality of transport elements are movably arranged on the transport path, comprising:

determining a treatment state of at least one container carried along by a first transport element among the plurality of transport elements,

wherein the first transport element is moved by means of at least one of an open- or closed-loop control unit of the container treatment system as part of a stream of transport elements,

wherein a motion profile of the first transport element is adapted by means of the open- or closed-loop control unit in response to the determined treatment state, the motion profile being one of the motion profiles of the plurality of individually controllable transport elements, and

further comprising;

determining a treatment state of at least one container carried along by a second transport element among the plurality of transport elements,

adapting at least one of the motion profile of the first transport element or a motion profile of the second transport element in response to the determined treatment states of the entrained containers of the first and second transport element such that a distance of the second transport element from the first transport element is reduced to a predetermined distance,

wherein the first and the second transport element are directly adjacent along the transport path, and

wherein the first transport element is coupled directly to the second transport element when the predetermined distance is reached.

16. The method according to claim 15, wherein the distance is reduced at least in part against a magnetic repulsive interaction between the first and the second transport element.

17. The method according to claim 15, wherein coupling is carried out at least one of mechanically or magnetically.

18. The method according to claim 15, wherein after coupling the first and the second transport element are moved with a joint motion profile jointly along a part of the transport path.

19. The method according to claim 15, wherein coupling is carried out at least in part by reorientation or polarity reversal of one or a plurality of magnets arranged on the first or second transport element.

20. The method according to claim 19, wherein the reorientation is carried out by means of a cam which is switchable by the open- and/or closed-loop control unit, or automatically by means of magnetic interaction between the first and the second transport element.

21. A transport element for transporting at least one container along a transport path, comprising:

at least one support element which is configured such that the transport element can be movably supported on the transport path,

a holding device for holding one or plural containers,

a reaction element which comprises at least one permanent magnet and/or at least one electromagnet, wherein the reaction element is configured such that the transport element can be moved along the transport path by magnetic interaction with the transport path, and

a first coupling element which is configured such that the transport element can be coupled by means of the first coupling element to a first further transport element,

wherein the first coupling element comprises a switchable mechanical coupling element, or

wherein the first coupling element comprises at least one of a permanent magnet, the permanent magnet rotatably supported on the transport element, or an electromagnet, the polarity of which can be reversed by means of an electrical circuit of the transport element.

22. The transport element according to claim 21, further comprising a second coupling element which is configured such that the transport element can be coupled by means of the second coupling element to a second further transport element.

23. The transport element according to claim 21, wherein each of the permanent magnet or the electromagnet is configured as part of the reaction element.

24. The transport element according to claim 21, wherein the permanent magnet can be reoriented by means of a switchable cam.

25. The transport element according to claim 21, wherein the permanent magnet can be reoriented by means of magnetic interaction with the first further transport element.

26. The transport element according to claim 25, further comprising a spring-loaded locking device for locking the permanent magnet, which is configured such that it is automatically released when a first predetermined threshold value of the magnetic interaction with the first further transport element is exceeded.

27. The transport element according to claim 26, further comprising a resetting device which is configured such that it turns the permanent magnet back into an original orientation when a second predetermined threshold value of the magnetic interaction is fallen short of.

28. A transport device for transporting containers in a container treatment system, which comprises at least one first container treatment unit for a first process step, comprising

a transport path,

at least one transport element for transporting one or a plurality of containers, which is movably arranged on the transport path, and

at least one of an open- or closed-loop control unit which is configured to move the transport element according to a predetermined motion profile along at least a part of the transport path as a part of a stream of transport elements,

wherein the transport path and the transport element are configured such that the transport element can be guided in an individually controllable manner along at least the part of the transport path,

wherein the transport path comprises:

a process section on which at least the first container treatment unit is arranged,

a bypass section which is connected to the process section such that the bypass section forms a detour at least of the first container treatment unit, and

wherein the bypass section is configured such that the transport element can be guided in both directions.

29. The transport device according to claim 28, further comprising a buffer section which is connected to at least one of the process section or the bypass section such that the transport element can be stored at least temporarily on the buffer section.

30. The transport device according to claim 29,

wherein the buffer section is configured such that the transport element can be guided in both directions.

31. The transport device according to claim 28, further comprising an inspection unit which is configured to determine a treatment state of a container carried along by the transport element.

32. The transport device according to claim 31,

wherein the inspection unit is configured to communicate the determined treatment state by means of a signal to the at least one of an open- or closed-loop control unit, and

wherein the at least one of the open- or closed-loop control unit is configured to adapt the predetermined motion profile of the transport element in response to the determined treatment state.