Cushioning conversion system with dunnage pad transfer mechanism

• US 6,718,729 B2
• Filed: 10/19/2001
• Issued: 04/13/2004
• Est. Priority Date: 10/20/2000
• Status: Expired due to Term

• Current Assignee: Ranpak Corp. (Ranpak Holdings Corp.)
• Original Assignee: Ranpak Corp. (Ranpak Holdings Corp.)
• Inventors: Manley, Thomas E.
• Primary Examiner(s): Gerrity, Stephen F.
• Assistant Examiner(s): DESAI, HEMANT
• Application Number:
  US10/032,509
• Publication Number:
  US 20020107129A1
• Time in Patent Office: 907 Days
• Field of Search: 534/72, 532/47, 532/48, 532/49, 532/55, 493/8, 493/12, 493/29, 414/798, 414/798.1, 221/12, 221/290, 221/194
• US Class Current: 53/247
• CPC Class Codes: B31D 2205/0064 Stabilizing the shape of the final product, e.g. by mechanical interlocking
• CPC Class Codes: B31D 2205/007 Delivering
• CPC Class Codes: B31D 2205/0088 Control means
• CPC Class Codes: B31D 5/0039 for making dunnage or cushion pads
• CPC Class Codes: B31D 5/0047 involving toothed wheels
• CPC Class Codes: B65B 55/20 Embedding contents in shock-absorbing media, e.g. plastic foam, granular material

Abstract

A cushioning conversion system and method for transferring a dunnage pad are disclosed. The conversion system includes a cushioning conversion machine and a pad support. The conversion machine produces cushioning dunnage pads and discharges the pads in a predetermined discharge direction. A pad support is movable between a pad receiving position and a pad discharge position. In the pad receiving position, the pad support is oriented relative to the conversion machine to receive thereon dunnage pads discharged from the conversion machine in the discharge direction. In the pad discharge position, the pad support is tilted relative to horizontal for discharge of the dunnage pad from the pad support.

Claims

1. A cushioning conversion system, comprising:

a cushioning conversion machine for producing cushioning dunnage pads and discharging the pads in a predetermined discharge direction;

a pad support movable between a pad receiving position, whereat the pad support is oriented relative to the conversion machine to receive thereon dunnage pads discharged from the conversion machine in the discharge direction, and at least one pad discharge position, whereat the pad support is tilted relative to horizontal for discharge of the dunnage pad; and

a sloped surface onto which the dunnage pad is discharged from the pad support when the pad support moves to its pad discharge position.

2. A cushioning conversion system as set forth in claim 1, wherein when the pad support moves to its pad discharge position, the dunnage pad is discharged in a slide direction from the pad support, and wherein the sloped surface is oriented relative to the conversion machine so that the slide direction is substantially perpendicular to the discharge direction.

3. A cushioning conversion system as set forth in claim 1, wherein the sloped surface is substantially parallel to the discharge direction.

4. A cushioning conversion system as set forth in claim 1, wherein when the pad support moves to its pad discharge position, the dunnage pad is discharged in a slide direction from the pad support, and further including a stop projecting from the sloped surface against which a dunnage pad moving in the slide direction along the sloped surface stops.

5. A cushioning conversion system as set forth in claim 1, wherein when the pad support is in its pad discharge position, the pad support is substantially parallel to the sloped surface.

6. A cushioning conversion system as set forth in claim 1, wherein the conversion machine includes a discharge chute from which the dunnage pad is discharged, and the pad support is oriented relative to the conversion machine such that when the pad support is in its pad receiving position the pad support lies in a plane substantially parallel to a bottom wall of the discharge chute.

7. A cushioning conversion system as set forth in claim 6, wherein the pad support, when it is in its pad receiving position, is offset from the bottom wall of the discharge chute.

8. A cushioning conversion system as set forth in claim 1, further including a controller for coordinating the operation of the pad support and conversion machine, and a pad sensor oriented relative to the sloped surface for detecting whether there is a dunnage pad at a predetermined location on the sloped surface.

9. A cushioning conversion system as set forth in claim 1, further including a pad support sensor for detecting whether there is a dunnage pad on the pad support.

10. A cushioning conversion system, comprising:

a cushioning conversion machine for producing cushioning dunnage pads and discharging the pads in a predetermined discharge direction;

a pad support movable between a pad receiving position, whereat the pad support is oriented relative to the conversion machine to receive thereon dunnage pads discharged from the conversion machine in the discharge direction, and one of either first or second pad discharge positions whereat the pad support is tilted relative to horizontal for discharge of the dunnage pad from the pad support; and

first and second sloped surfaces positioned at opposite sides of the pad support, wherein when the pad support is tilted to its first discharge position the dunnage pad is discharged in a first slide direction onto the first sloped surface, and wherein when the pad support is tilted to its second discharge position the dunnage pad is discharged in a second slide direction onto the second sloped surface.

11. A cushioning conversion system as set forth in claim 10, wherein the pad receiving position is disposed intermediate the pair of discharge positions.

12. A cushioning conversion system as set forth in claim 10, wherein the first and second sloped surfaces are oriented relative to the conversion machine so that the respective first and second slide directions are substantially perpendicular to the discharge direction.

13. A method of providing a dunnage pad onto one of first and second sloped transitional surfaces, comprising the steps of:

using a cushioning conversion machine to convert sheet stock material into a dunnage pad;

discharging the dunnage pad from the conversion machine onto a pad support, the pad support being positioned in a pad receiving position; and

,

tilting the pad support from the pad receiving position to either a first pad discharge position to discharge the dunnage pad therefrom and onto the first transitional surface or to a second pad discharge position to discharge the pad therefrom and onto the second transitional surface.

14. A method as set forth in claim 13, wherein the step of discharging the dunnage pad from the conversion machine includes using the cushioning conversion machine to convert sheet stock material into a succeeding dunnage pad, and using the succeeding dunnage pad to push the existing dunnage pad from the conversion machine onto the pad support.

15. A method as set forth in claim 14, further including maintaining at least a portion of the existing dunnage pad in a discharge chute of the conversion machine for a predetermined amount of time until the succeeding dunnage pad pushes the dunnage pad out from the discharge chute.

16. A method as set forth in claim 13, repeating the steps to form a succeeding dunnage pad, the succeeding pad, when discharged onto either the first or second transitional surface, stacking in a side-by-side manner with an existing dunnage pad on the respective first or second transitional surface.

17. A method as set forth in claim 13, wherein after the step of tilting the pad support to discharge the dunnage pad therefrom, the pad support is tilted back to the pad receiving position to receive a succeeding dunnage pad from the conversion machine.

18. A method as set forth in claim 17, wherein after the pad support is tilted to receive the succeeding dunnage pad, the step of using the conversion machine is repeated.

19. A method as set forth in claim 17, wherein while the pad support is tilted to receive the succeeding dunnage pad, the step of using the conversion machine is repeated.

20. A method as set forth in claim 13, wherein after the step of tilting the pad support to discharge the dunnage pad therefrom, tilting the pad support back to the pad receiving position to receive a succeeding dunnage pad from the conversion machine and then tilting the pad support to either the first pad discharge position to discharge the succeeding dunnage pad therefrom and onto the first transitional surface or to the second transitional surface to discharge the succeeding dunnage pad therefrom and onto the second transitional surface.

21. A method as set forth in claim 20, wherein the pad support is tilted to the first discharge position both to discharge the dunnage pad therefrom and to discharge the succeeding dunnage pad therefrom.

22. A method as set forth in claim 20, wherein the pad support is tilted to the first discharge position to discharge the dunnage pad therefrom and then to the second discharge position to discharge the succeeding dunnage pad therefrom.

23. A method as set forth in claim 20, wherein for every one dunnage pad that the pad support discharges to the first transitional surface, the pad support discharges two or more dunnage pads to the second transitional surface.

24. A method as set forth in claim 20, further including detecting whether there is an existing dunnage pad at a predetermined location on the first transitional surface or at a predetermined location on the second transitional surface.

25. A method as set forth in claim 24, wherein if no dunnage pad is detected at the predetermined location on the first transitional surface, then the pad support is tilted to the first discharge position to discharge the dunnage pad therefrom and onto the first transitional surface.

26. A method as set forth in claim 24, further including stopping the conversion machine if there is detected an existing dunnage pad at the predetermined location on the first transitional surface and an existing dunnage pad at the predetermined location on the second transitional surface.

27. A dunnage pad transfer mechanism for positioning at the outlet of a cushioning conversion machine, comprising a pad support movable between a pad receiving position and either a first pad discharge position or a second pad discharge position, and first and second transitional slides adjacent the pad support for receiving a pad therefrom when the pad support is tilted from its pad receiving position to the respective first or second pad discharge position.