Device for transferring articles between oppositely running conveyors

• US 6,612,420 B1
• Filed: 10/17/2000
• Issued: 09/02/2003
• Est. Priority Date: 10/17/2000
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Hartness International Inc. (Illinois Tool Works Inc.)
• Inventors: Hartness, William R. III, Cooley, David N., Hartness, Thomas P.
• Primary Examiner(s): Valenza, Joseph E.
• Application Number:
  US09/690,320
• Time in Patent Office: 1,050 Days
• Field of Search: 198/364, 198/457.06, 198/594, 198/597
• US Class Current: 198/597
• CPC Class Codes: B65G 47/5131 by relative displacement between conveyors or conveyor parts and bridging means therebetween
• CPC Class Codes: B65G 47/766 Adjustable ploughs or transverse scrapers

Abstract

An apparatus is provided for controlling the flow of articles. The apparatus includes a first conveyor driven in a first direction and a second conveyor driven in a second opposite direction. The conveyors extend in a side-by-side and parallel relationship with a space defined therebetween. A movable transport member is disposed within the space between the conveyors and defines a bridge that extends across the space and is generally flush with the upper surfaces of the conveyors. The transport member is drivingly engaged by the conveyors so as to move linearly between the conveyors depending on a speed differential of the conveyors. At least one article transfer member comprising a driven article propelling member is carried by the transport member and is disposed transversely to the conveyors to contact and drivingly transfer the articles from the first conveyor over the bridge member and onto the second conveyor.

Claims

1. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a bridge extending between said conveyors and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

an article transfer member carried by said transport member and operably disposed transversely to said conveyors, wherein said article transfer member movably directs articles from said first conveyor to said second conveyor, said article transfer member including an article propelling member that contacts the sides of the articles and drivably propels articles on said first conveyor towards said second conveyor;

said transport member comprises a drive wheel simultaneously engaged by drive lugs on each of said conveyors so as to continuously rotate so long as at least one of said conveyors is moving;

said article propelling member has a length so as to extend at least across said first conveyor;

said article transfer member is rotatably connected to said transport member allowing said article transfer member to properly operate as it moves along the conveyors; and

said article transfer member further comprises a transfer member stabilizer having an elastic member connected between said article transfer member and said transport member, said transfer member stabilizer preventing said article transfer member from open rotation and maintaining said article transfer member within a specified set of angles relative to the conveyors.

2. An apparatus as in claim 1, wherein said first conveyor further comprises a movable outer lip integral with the upper surface of said first conveyor and extending perpendicular to said conveyor.

3. An apparatus as in claim 2, wherein said transfer member stabilizer further comprises an angle guide disposed at the end of said article transfer member remote from said transport member, said angle guide, working in conjunction with said elastic member, abuts said outer lip of said first conveyor to insure said article transfer member maintains a proper angle relative to the conveyors.

4. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a bridge extending between said conveyors and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

an article transfer member carried by said transport member and operably disposed transversely to said conveyors, wherein said article transfer member movably directs articles from said first conveyor to said second conveyor, said article transfer member including an article propelling member that contacts the sides of the articles and drivably propels articles on said first conveyor towards said second conveyor; and

said bridge comprises a deformable rail member having dimensions so as to fit between said conveyors over a length thereof.

5. An apparatus as in claim 4, wherein said rail member comprises a plurality of pivotally connected links having an upper surface generally flush with said upper surfaces of said conveyors.

6. An apparatus as in claim 5, wherein each of said links comprises a first side component and a second side component and at least one elastic member between said first side component and said second side component.

7. An apparatus as in claim 4, wherein said bridge comprises a deformable rail having an end connected to said carriage.

8. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a bridge extending between said conveyors and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

an article transfer member carried by said transport member at a first end of said bridge and operably disposed transversely to said conveyors, wherein said article transfer member movably directs articles from said first conveyor to said second conveyor, said article transfer member including an article propelling member that contacts the sides of the articles and drivably propels articles on said first conveyor towards said second conveyor;

said transport member comprising a drive wheel simultaneously engaged by drive lugs on each of said conveyors so as to continuously rotate so long as at least one of said conveyors is moving; and

a second article transfer member connected to an opposite end of said bridge remote from said first article transfer member, said second article transfer member operably disposed between said conveyors and comprising a second article propelling member that diverts the articles from said first conveyor to said second conveyor, said second article propelling member comprising a member traveling in an endless path and having an outwardly facing surface with article contacting members disposed thereon to contact and propel the articles from said first conveyor towards said second conveyors.

9. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a bridge extending between said conveyors and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

an article transfer member carried by said transport member and operably disposed transversely to said conveyors, wherein said article transfer member movably directs articles from said first conveyor to said second conveyor, said article transfer member including an article propelling member that contacts the sides of the articles and drivably propels articles on said first conveyor towards said second conveyor;

said transport member comprising a drive wheel simultaneously engaged by drive lugs on each of said conveyors so as to continuously rotate so long as at least one of said conveyors is moving;

a second article transfer member connected to said bridge remote from said first article transfer member, said second article transfer member operably disposed between said conveyors and comprising a second article propelling member that diverts the articles from said first conveyor to said second conveyor; and

wherein said second article propelling member comprises a belt driven by said drive wheel.

10. An apparatus as in claim 9, Wherein said belt comprises article gripping members disposed on the outward face of said belt, said gripping members configured to contact and propel the articles from said first conveyor towards said second conveyor.

11. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a bridge extending between said conveyors and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

an article transfer member carried by said transport member and operably disposed transversely to said conveyors, wherein said article transfer member movably directs articles from said first conveyor to said second conveyor, said article transfer member including an article propelling member that contacts the sides of the articles and drivably propels articles on said first conveyor towards said second conveyor;

said transport member comprising a drive wheel simultaneously engaged by drive lugs on each of said conveyors so as to continuously rotate so long as at least one of said conveyors is moving;

a second article transfer member connected to said bridge remote from said first article transfer member, said second article transfer member operably disposed between said conveyors and comprising a second article propelling member that diverts the articles from said first conveyor to said second conveyor; and

further comprising vertical alignment members attached to the end of the second article transfer member remote from said bridge, said vertical alignment member extending perpendicular to said first conveyor to insure proper alignment of articles for said second article transfer member.

12. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a carriage member having a drive wheel engaged with drive lugs on each of said conveyors so that said carriage member moves along said conveyors depending on a speed differential between said conveyors causing said carriage member to move in the direction of the faster of said conveyors;

a longitudinally extending deformable rail member attached to said carriage member so as to move therewith relative to said conveyors, said rail member disposed between said conveyors and having an upper surface generally flush with an upper surface of each of said conveyors;

a first article transfer member carried by said carriage member and extending across at least a portion of said first conveyor so that articles on said first conveyor are movably deflected by said first transfer member over said rail member and onto said second conveyor, said first article transfer member comprises a first article propelling member that contacts the side of the articles and is rotatably driven by said drive wheel; and

a second article transfer member attached to the end of said rail member remote from said carriage, said second article transfer member comprises a second article propelling member that rotatably engaged the side of the articles so that the articles on said first conveyor are deflected by said second article propelling member over said rail member and onto said second conveyor.

13. An apparatus as in claim 12, wherein said rail member comprises a plurality of interconnected links, said links moveable between the facing edges of said conveyors.

14. An apparatus as in claim 13, wherein said each of said links comprises a first side component and a second side component and at least one elastic member between said first side component and said second side component to facilitate necessary deformation.

15. An apparatus as in claim 12, wherein said first article propelling member and said second article propelling member comprises separate belt and pulley systems powered by said drive wheel so that the belt for each system engagingly propels articles from said first conveyor across said rail members unto said second conveyor.

16. An apparatus as in claim 15, wherein said belt of said second article propelling member comprises article gripping members disposed on the outward face of said belt to aid in transferring the articles from said first conveyor to said second conveyor.

17. An apparatus as in claim 12, further comprising vertical alignment members attached to the end of the second article transfer member remote from said rail member, said vertical alignment members disposed between said conveyors and extending above the upper surface of each of said conveyors.

18. An apparatus as in claim 12, wherein said article transfer member further comprises a transfer member stabilizer having an elastic member connected between said article transfer member and said carriage and an angle guide that is aligned with the outer edge of the first conveyor disposed at the end of said article transfer member remote from said carriage, said transfer member stabilizer maintaining said article transfer member within a specified set of angles relative to the conveyors.

19. An apparatus for controlling the flow of articles, comprising:

a first conveyor driven in a first direction to convey articles thereon in said first direction, and a second conveyor driven in a second direction opposite to said first direction to convey articles thereon in said second direction;

said first and second conveyors extending side-by-side and parallel with a space defined therebetween;

a movable transport member disposed within said space defined between said conveyors and comprising a head end and a tail end extending between said conveyors, and a bridge extending between said head end and said tail end and generally flush with upper surfaces of said conveyors;

said transport member drivingly engaged by both of said conveyors so as to move linearly between said conveyors depending on a speed differential between said conveyors causing said transport member to move in the direction of the faster of said conveyors;

at least one article propelling member carried by said transport member and operably disposed relative to said conveyor to contact the articles and drivably propel articles on said first conveyor across said bridge and onto said second conveyor; and

vertical alignment members attached to the tail end of the transport member remote from said bridge, said vertical alignment member extending perpendicular to said first conveyor to insure proper alignment of articles before transfer to said second conveyor.

20. An apparatus as in claim 19, wherein said article propelling member is disposed on the head end of the transport member.

21. An apparatus as in claim 19, wherein said article propelling member is disposed on the tail end of the transport member.

22. An apparatus as in claim 19, wherein an additional article propelling member is disposed on the tail end of the transport member.

23. An apparatus as in claim 19, wherein said transport member comprises a drive wheel simultaneously engaged by drive lugs on each of said conveyors so as to continuously rotate so long as at least one of said conveyors is moving.

24. An apparatus as in claim 19, wherein said article propelling member is driven by said drive wheel.

25. An apparatus as in claim 19, wherein said article transfer member further comprises a transfer member stabilizer having a means for maintaining said article transfer member in a proper position.