Diverter

• US 7,124,876 B2
• Filed: 03/10/2004
• Issued: 10/24/2006
• Est. Priority Date: 03/21/2003
• Status: Expired due to Fees

• Current Assignee: Dematic Corporation
• Original Assignee: Dematic Corporation
• Inventors: Wolf, Stephen C
• Primary Examiner(s): Crawford, Gene O.
• Assistant Examiner(s): SHARMA, RASHMI K
• Application Number:
  US10/796,917
• Publication Number:
  US 20040231960A1
• Time in Patent Office: 958 Days
• Field of Search: 19837008-37009, 198/367, 198/370.01, 198/370.1
• US Class Current: 198/370.08
• CPC Class Codes: B65G 21/06 constructed to facilitate rapid assembly or dismantling
• CPC Class Codes: B65G 47/766 Adjustable ploughs or transverse scrapers

Abstract

A paddle diverter assembly according to the present invention includes an arm and an actuator for actuating the arm to move toward a diverting position. The actuator is adapted to permit the arm to move away from the diverting position upon impact with the object to be diverted and then to return to the diverting position to thereby absorb at least some of the impact between the arm and an object being diverted.

Claims

1. A paddle diverter assembly comprising:

an arm; and

an actuator for moving said arm from a home position to a diverting position, said actuator being adapted to permit said arm to move away from the diverting position upon impact with an object to be diverted to thereby absorb at least some of the impact between the arm and the object being diverted and adapted to return said arm to said diverting position by an electromagnetic field.

2. The paddle diverter assembly according to claim 1, wherein said arm comprises a driven diverting surface.

3. The paddle diverter assembly according to claim 2, wherein said driven diverting surface comprises a drive belt.

4. The paddle diverter assembly according to claim 1, wherein said actuator extends downwardly from said arm no more than 12 inches.

5. The paddle diverter assembly according to claim 1, wherein said actuator comprises a motor and a servo controller selectively powering said motor, said motor permitting said arm to move away from the diverting position upon impact with the object and forming an electric spring.

6. The paddle diverter assembly according to claim 1, wherein said arm includes a spring, said spring deflecting to absorb impact when said arm impacts the object being diverted by said arm.

7. The paddle diverter assembly according to claim 6, wherein said spring comprises a plate spring.

8. The paddle diverter assembly according to claim 7, wherein said arm includes a medial portion, and said spring being provided at said medial portion.

9. The paddle diverter assembly according to claim 8, wherein said plate spring includes a longitudinal extent, said arm having a longitudinal axis, said longitudinal extent extending along said longitudinal axis.

10. The paddle diverter assembly according to claim 9, wherein said arm comprises a driven diverting surface.

11. The paddle diverter assembly according to claim 10, wherein said driven diverting surface comprises a driven belt.

12. The paddle driver assembly according to claim 3, wherein said arm supports belt pulleys for supporting said drive belt.

13. The paddle diverter assembly according to claim 5, wherein said arm comprises a first arm, said diverter assembly in combination with a conveying surface and a second arm on an opposed side of said conveying surface from said first arm, and a control system, said control system including said servo controller and a second motor for moving said second arm from a home position to a diverting position, and said control system operable to move said first arm and said second arm asynchronously.

40. The paddle diverter assembly according to claim 13, wherein said control system further includes a pair of sensors, said sensors for detecting the leading edge and the tailing edge of an article on said conveying surface, and said control system determining the length of an article being diverted.

14. A paddle diverter assembly comprising:

an arm, said arm comprising a driven diverting surface, said driven diverting surface comprising a drive belt;

an actuator for moving said arm from a home position to a diverting position, said actuator being adapted to permit said arm to move away from the diverting position upon impact with an object to be diverted to thereby absorb at least some of the impact between the arm and the object being diverted;

wherein said arm includes a spring, said spring deflecting to absorb impact when said arm impacts the object being diverted by said arm, said spring comprising a plate spring;

said arm including a medial portion and a lougitudinal axis, and said spring being provided at said medial portion and having a londtudinal extent, said longitudinal extent extending along said longitudinal axis of said arm; and

wherein said plate spring includes a longitudinal groove extending along said longitudinal extent, said drive belt having a rib, said rib extending into said groove wherein said groove provides vertical support to said drive belt.

15. A paddle diverter assembly comprising:

an arm, said arm comprising a driven diverting surface, and said driven diverting surface comprising a drive belt, said arm supporting belt pulleys for supporting said drive belt;

an actuator for moving said arm from a home position to a diverting position, said actuator being adapted to permit said arm to move away from the diverting position upon impact with an object to be diverted to thereby absorb at least some of the impact between the arm and the object being diverted; and

wherein said arm comprises at least first and second arm portions, said first and second arm portions releasably interlocked, when released said first and second arm portions permitting removal of the drive belt without disassembly of the paddle diverter assembly.

16. The paddle diverter assembly according to claim 15, wherein said first and second arm portions are slidably releasable.

17. The paddle diverter assembly according to claim 15, wherein said first and second arm portions include a slidable joint therebetween, said slidable joint being selectively fixable wherein said first and second arm portions are interlocked and being selectively releasable to permit removal of said belt.

18. The paddle diverter assembly according to claim 17, wherein said slidable joint comprises a dovetail joint.

19. The paddle diverter assembly according to claim 18, wherein said dovetail joint comprises an angled dovetail joint.

20. The paddle diverter assembly according to claim 18, wherein said arm portion comprises at least two extruded sections.

21. The paddle diverter assembly according to claim 15, wherein said first and second arm portions releasably interlock at a fixed length to form a rigid member having a longitudinal extent along a longitudinal axis and a transverse extent, further comprising first and second spaced apart pulleys mounted to said rigid member, said belt drive being supported by said pulleys about said rigid member, and said first and second arm portions releasably interlocked at a fixed length and being releasable wherein said first pulley and said second pulley can be moved closer together wherein said belt can be removed for repair or replacement.

22. A diverter system comprising:

a conveying surface having a conveying direction and for conveying an article at a conveying speed;

a pair of diverter assemblies at opposite sides of said conveying surface, each of said diverter assemblies comprising an arm mounted for pivotal movement between a non-diverting position and a diverting position wherein said arm is pivoted across at least a portion of said conveying surface; and

a drive system independently and selectively moving said arms between said diverting positions and said non-diverting positions wherein said arms may be individually moved to their respective diverting positions and wherein an article conveyed on said conveying surface is diverted in a diverting direction when the article contacts one of said arms when said one arm is in said diverting position, wherein said drive system permits said arms to pivot away from their diverting positions when impacted by an article to thereby reduce the impact on the article being diverted and return said arms to their diverting positions by an electromagnetic field.

23. The diverter assembly in claim 22, wherein said drive system comprises a driver for each arm, said drivers being independently actuated to move said arms to their respective diverting positions.

24. The diverter assembly in claim 23, wherein said drive system comprises a controller, said controller selectively and independently actuating said drivers.

25. The diverter assembly in claim 24, wherein said controller comprises a servo controller.

26. The diverter assembly according to claim 22, wherein each of said arms includes a driven diverting surface.

27. The diverter system according to claim 26, wherein at least one of said driven diverting surfaces comprises a drive belt.

28. The diverter system according to claim 27, wherein each arm comprises a horizontal extent, said drive at belt extending around said horizontal extent, said belt being driven about said horizontal extent and providing said driven diverting surface.

29. The diverter system according to claim 22, wherein each of said arms includes a horizontal extent and a belt extending around said horizontal extent, said belts being driven around the respective horizontal extents and providing driven diverting surfaces for each of said arms.

30. The diverter system according to claim 29, wherein each of said drive belts is driven by a driven roller, said driven rollers driven by said drive system.

31. The diverter system according to claim 30, wherein each of said driven rollers includes a driven axis about which said driven roller is driven, and said arms pivoting about a respective pivot axis when pivoting between said non-diverting position and said diverting position.

32. The diverter system according to claim 31, wherein said driven axis of a respective arm and said respective pivot axis of said respective arm are generally collinear.

33. The diverter system according to claim 32, wherein said drive system is adapted to de-couple movement of said drive belts about said driven axes from movement of said arms about said pivot axes.

34. The diverter system according to claim 33, wherein said drive system includes a motor for pivoting each of said arms and a motor for driving each of said drive belts, said motors independently actuated by said drive system.

35. A method or selectively diverting an object, said method comprising:

providing at least one paddle assembly having an arm;

moving the arm with a drive assembly to a diverting position; and

absorbing at least some of the impact between the object and the arm with the drive assembly allowing the arm to move away from the diverting position when the arm makes contact with an object to thereby absorb some of the impact; and

returning the arm to the diverting position with an electromagnetic field.

36. The method according to claim 35, wherein said moving comprises pivoting the arm to the diverting position.

37. The method according to claim 36, wherein said pivoting includes pivoting the arm with a servo controlled motor.

38. The method according to claim 35, further comprising providing a pair of paddle assemblies and selectively moving each of the paddle assemblies to a diverting position.

39. The method according to claim 38, wherein said selectively includes individually moving the paddle assemblies.