A flat belt support system with a drive roller and paired pulleys, each pair carrying a continuous flat belt that can be moved laterally along the drive roller axis and angled away from the plane normal to the drive roller axis. Multiple belts, each carried by a pair of pulleys, can be driven by a s
A flat belt support system with a drive roller and paired pulleys, each pair carrying a continuous flat belt that can be moved laterally along the drive roller axis and angled away from the plane normal to the drive roller axis. Multiple belts, each carried by a pair of pulleys, can be driven by a single drive roller. An additional roller allows the drive roller to be positioned so that it contacts the flat belt cover, rather than the back of the flat belt, improving friction between the drive roller and the flat belt.
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We claim: 1. A flat belt (4) and support system (84) for a flat belt (4) for conveying objects (38) from the entrance portion (86) of a conveyance surface (30) proximate a first roller (65) to the exit portion (87) of the conveyance surface (30) proximate a first pulley (67), the flat belt (4) and
We claim: 1. A flat belt (4) and support system (84) for a flat belt (4) for conveying objects (38) from the entrance portion (86) of a conveyance surface (30) proximate a first roller (65) to the exit portion (87) of the conveyance surface (30) proximate a first pulley (67), the flat belt (4) and support system (84) comprising: a. a flat belt (4) having a back (7), an outer cover (10) and a centerline belt path (83); b. a first roller (65) having a rotational axis (59), an outer surface (88) supporting the back (7) of the flat belt (4) and an entrance velocity plane (58) perpendicular to the rotational axis (59) which intersects the first roller average contact centerline belt path (96) which is the average lateral position of the centerline belt path (83) along the rotational axis (59) where the back (7) of the flat belt (4) is in contact with the first roller outer surface (88); c. a first pulley (67) having a rotational axis (63) and an outer surface (89) supporting the back (7) of the flat belt (4) with an exit velocity plane (62) perpendicular to the rotational axis (63) which intersects the first pulley average contact centerline belt path (97) which is the average lateral position of the centerline belt path (83) along the rotational axis (63) where the back (7) of the flat belt (4) is in contact with the first pulley outer surface (89); and d. a second pulley (68) having a rotational axis (76) and an outer surface (91) supporting the back (7) of the flat belt (4) with a return velocity plane (75) perpendicular to the rotational axis (76) which intersects the second pulley average contact centerline belt path (99) which is the average lateral position of the centerline belt path (83) along the rotational axis (76) where the back (7) of the flat belt (4) is in contact with the second pulley outer surface (91), wherein: i. the flat belt (4) has an upper conveyance surface (30); ii. the conveyance surface (30) has an entrance portion (86) and an entrance velocity plane (58) proximate the first roller (65); iii. the conveyance surface (30) has an exit portion (87), and an exit velocity plane (62) proximate the first pulley (67); iv. the first pulley (67) deflects the flat belt (4) from the entrance velocity plane (58) to the exit velocity plane (62); v. the entrance velocity plane (58) and the exit velocity plane (62) are not coplanar and not parallel; and vi. the return velocity plane (75) is substantially coplanar with the exit velocity plane (62). 2. The flat belt (4) and support system (84) of claim 1, wherein the lateral positioning (47) of the second pulley (68) controls the lateral positioning of the entrance velocity plane (58). 3. The flat belt (4) and support system (84) of claim 1, wherein the exit velocity plane (62) is adjustable to any selected degree of not coplanar and not parallel to the entrance velocity plane (58) by adjusting the position of the first pulley (67) and simultaneously adjusting the second pulley (68) in order to keep the return velocity plane (75) substantially coplanar with the exit velocity plane (62). 4. The flat belt (4) and support system (84) of claim 1, wherein the entrance velocity plane (58) is laterally (47) movable along the rotational axis (59) of the first roller (65) while rotating the first roller (65) to permit the flat belt (4) to maintain proper tracking of the second pulley (68). 5. The flat belt (4) and support system (84) of claim 1, wherein the first pulley (67) and second pulley (68) are crowned (24) to improve the ability of the flat belt (4) to track the first and second pulleys (67, 68). 6. The flat belt (4) and support system (84) of claim 1, wherein a spatial relationship exists between the first roller (65), first pulley (67) and second pulley (68) such that the tangent surface vector (78) created by the first roller (65) and the first pulley (67) is substantially perpendicular to the tangent surface vector (79) created by the first roller (65) and the second pulley (68). 7. The flat belt (4) and support system (84) of claim 1, wherein a torque source (94) is operatively connected to the first roller (65) to provide driving power for the flat belt (4) through friction between the back (7) of the flat belt (4) and the outer surface (88) of the first roller (65). 8. The flat belt (4) and support system (84') of claim 1, wherein a second roller (66) having a rotational axis (72) and an outer surface (90) is positioned between the second pulley (68) and the first roller (65), with the second roller rotational axis (72) parallel to the first roller rotational axis (59) such that the cover (10) of the flat belt (4) contacts the surface (90) of the second roller (66) which increases the amount of surface contact between the first roller surface (88) and the back (7) of the flat belt (4) and increases the amount of surface contact between the second pulley outer surface (91) and the back (7) of the flat belt (4). 9. The flat belt (4) and support system (95) of claim 8, wherein a torque source (94) is operatively connected to the second roller (66) to provide driving power for the flat belt (4) through friction between the cover (10) of the flat belt (4) and the outer surface (90) of the second roller (66). 10. The flat belt (4) and support system (95) of claim 1, wherein the conveyance surface (30) conveys objects (38) from the entrance portion (86) proximate the first roller (65) to the exit portion (87) proximate the first pulley (67). 11. The flat belt (4) and support system (84) of claim 10, wherein the conveyed objects (38) are flat boxes (41). 12. A plurality of flat belts (4, 4') and support systems (84, 84') for the plurality of flat belts (4,4') each of the plurality of flat belts being for conveying objects (38) from the entrance portion (86, 86') of a conveyance surface (30, 30') proximate a first roller (65) to the exit portion (87, 87') of the conveyance surface (30, 30') proximate each associated first pulley (67, 67'), each of the plurality of flat belts (4, 4') and support systems (84, 84') comprising: a. a flat belt (4, 4') having a back (7, 7'), an outer cover (10, 10') and a centerline belt path (83, 83'); b. a first roller (65) common to the plurality of flat belts (4, 4') and support systems (84, 84') having a rotational axis (59), an outer surface (88) supporting the back (7, 7') of the flat belt (4, 4') and an entrance velocity plane (58, 58') perpendicular to the rotational axis (59) which intersects the first roller average contact centerline belt path (96, 96') which is the average lateral position of the centerline belt path (83, 83') along the rotational axis (59) where the back (7, 7') of the flat belt (4, 4') is in contact with the first roller outer surface (88); c. a first pulley (67, 67') having a rotational axis (63, 63') and an outer surface (89, 89') supporting the back (7, 7') of the flat belt (4, 4') with an exit velocity plane (62, 62') perpendicular to the rotational axis (63, 63') which intersects the first pulley average contact centerline belt path (97, 97') which is the average lateral position of the centerline belt path (83, 83') along the rotational axis (63, 63') where the back (7, 7') of the flat belt (4, 4') is in contact with the first pulley outer surface (89, 89'); and d. a second pulley (68, 68') having a rotational axis (76, 76') and an outer surface (91, 91') supporting the back (7, 7') of the flat belt (4, 4') with a return velocity plane (75, 75') perpendicular to the rotational axis (76, 76') which intersects the second pulley average contact centerline belt path (99, 99') which is the average lateral position of the centerline belt path (83, 83') along the rotational axis (76, 76') where the back (7, 7') of the flat belt (4, 4') is in contact with the second pulley outer surface (91, 91'), wherein: i. the flat belt (4, 4') has an upper conveyance surface (30, 30'); ii. the conveyance surface (30, 30') has an entrance portion (86, 86') and an entrance velocity plane (58, 58') proximate the first roller (65); iii. the conveyance surface (30, 30') has an exit portion (87, 87'), and an exit velocity plane (62, 62') proximate the first pulley (67, 67'); iv. the first pulley (67, 67') deflects the flat belt (4, 4') from the entrance velocity plane (58, 58') to the exit velocity plane (62, 62'); v. the entrance velocity plane (58, 58') and the exit velocity plane (62, 62') are not coplanar and not parallel; and vi. the return velocity plane (75, 75') is substantially coplanar with the exit velocity plane (62, 62'). 13. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein the lateral positioning (47) of each of the second pulleys (68, 68') controls the lateral positioning of each associated entrance velocity plane (58, 58'). 14. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein each of the exit velocity planes (62, 62') is adjustable to any selected degree of not coplanar and not parallel to each associated entrance velocity plane (58, 58') by adjusting the position of each first pulley (67, 67') and simultaneously adjusting each associated second pulley (68, 68') in order to keep each associated return velocity plane (75, 75') substantially coplanar with each associated exit velocity plane (62, 62'). 15. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein each of the entrance velocity planes (58, 58') is laterally (47) movable along the rotational axis (59) of the first roller (65) while rotating the first roller (65) to permit each of the flat belts (4, 4') to maintain proper tracking of each associated second pulley (68, 68'). 16. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein the first pulleys (67, 67') and second pulleys (68, 68') are crowned (24) to improve the ability of the flat belts (4, 4') to track the associated first pulleys (67, 67') and second pulleys (68, 68'). 17. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein a spatial relationship exists between the first roller (65), each first pulley (67, 67') and each associated second pulley (68, 68') such that the tangent surface vector (78, 78') created by the first roller (65) and each first pulley (67, 67') is substantially perpendicular to the tangent surface vector (79, 79') created by the first roller (65) and each associated second pulley (68, 68'). 18. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein a torque source (94) is operatively connected to the first roller (65) to provide driving power for the plurality of flat belts (4, 4') through friction between the back (7, 7') of each flat belt (4, 4') and the outer surface (88) of the first roller (65). 19. The plurality of flat belts (4, 4') and support systems (95, 95') of claim 12, wherein a second roller (66) having a rotational axis (72) and an outer surface (90) is positioned between the plurality second pulleys (68, 68') and the first roller (65), with the second roller rotational axis (72) parallel to the first roller rotational axis (59) such that the covers (10, 10') of the plurality of flat belts (4, 4') contacts the surface (90) of the second roller (66) which increases the amount of surface contact between the first roller surface (88) and the back (7, 7') of each flat belt (4, 4') and increases the amount of surface contact between each second pulley outer surface (91, 91') and the back (7, 7') of each of the plurality of flat belts (4, 4'). 20. The plurality of flat belts (4, 4') and support systems (95, 95') of claim 19, wherein a torque source (94) is operatively connected to the second roller (66) to provide driving power for the plurality of flat belts (4, 4') through friction between the cover (10, 10') of each flat belt (4, 4') and the outer surface (90) of the second roller (66). 21. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein the conveyance surfaces (30, 30') convey objects (38) from the entrance portions (86, 86') proximate the first roller (65) to the exit portions (87, 87') proximate the first pulleys (67, 67'). 22. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 21, wherein the conveyed objects (38) are flat boxes (41). 23. The plurality of flat belts (4, 4') and support systems (84, 84') of claim 12, wherein the flat belts (4, 4') and support systems (84, 84') are integrated into a sheet stacking machine (54) which conveys flat boxes (41) for the purpose of producing stacks of boxes (50).
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