Systems and methods for object processing using a vacuum gripper that provides object retention by shroud inversion
An end-effector of a programmable motion device is disclosed. The end-effector includes a body that provides an open interior, the open interior being coupled to a vacuum source, and the body including a contact surface for contacting an object to be grasped by the end effector. The contact surface includes at least one aperture through which a vacuum is provided, and the body includes an outer surface that faces away from the open interior. The body provides that when the flow of air drawn by the vacuum source through the at least one aperture is reduced due to the at least one aperture being at least partially blocked, the outer surface of the body engages the object being grasped at least partially within the open interior of the body.
1. An end-effector of a programmable motion device, said end-effector comprising a body that provides an open interior, said open interior being coupled to a vacuum source, and said body including a contact surface for contacting an object to be grasped by the end effector, said contact surface including at least one aperture through which a vacuum is provided, and said body further including an outer surface that surrounds the contact surface facing away from the open interior, and the body providing that when the flow of air drawn by the vacuum source through the at least one aperture of the contact surface is reduced due to the at least one aperture being at least partially blocked, the contact surface is drawn upward into the open interior and the outer surface of the body collapses around the object being grasped at least partially within the open interior of the body,
wherein the end effector further includes a stop member for limiting movement of the contact surface into the open interior.
2. The end-effector as claimed in claim 1 , wherein the outer surface is provided by a shroud that surrounds the contact surface.
3. The end-effector as claimed in claim 2 , wherein the shroud is generally frustoconical in shape.
4. The end-effector as claimed in claim 2 , wherein the shroud includes a scalloped edge.
5. The end-effector as claimed in claim 2 , wherein the contact surface includes a collapsible dome that is adapted to collapse into the open interior of the end-effector body.
6. The end-effector as claimed in claim 5 , wherein the collapsible dome includes a plurality of apertures therein.
7. The end-effector as claimed in claim 5 , wherein body further includes a plurality of braces on an inner surface of the shroud adjacent a base of the collapsible dome.
8. The end-effector as claimed in claim 1 , wherein the body includes at least one support rib on an inner surface thereof that extends along radial directions.
9. The end-effector as claimed in claim 1 , wherein the body includes at least one support rib on an inner surface thereof that extends along longitudinal directions.
10. The end-effector as claimed in claim 1 , wherein the stop member includes an opening therein to permit a flow of air at other than atmospheric pressure therethrough.
11. The end-effector as claimed in claim 1 , wherein the body of the end effector is formed of a compliant material.
12. A programmable motion device including the end-effector of claim 1 .
13. An object processing system including the programmable motion device of claim 12 .
14. An end-effector of a programmable motion device, said end-effector comprising a body that provides an open interior, said open interior being coupled to a vacuum source, and said body including a gripping shroud surrounding a contact surface for contacting an object to be grasped by the end effector,
wherein the contact surface comprises a plurality of apertures defined therein through which to provide a vacuum for engaging the object, wherein the contact surface collapses into the open interior when an air flow through at least one of the apertures is blocked by the object, and
wherein said gripping shroud moves from a first position facing away from the open interior to a second position drawn inward at least partially toward the open interior of the body to collapse around the object,
wherein the end-effector further includes a stop member for limiting movement of the contact surface into the open interior.
15. The end-effector as claimed in claim 14 , wherein the gripping shroud is generally frustoconical in shape.
16. The end-effector as claimed in claim 14 , wherein the gripping shroud includes a scalloped edge.
17. The end-effector as claimed in claim 14 , wherein the contact surface includes a collapsible dome that is adapted to collapse into the open interior of the end-effector body.
18. The end-effector as claimed in claim 17 , wherein the collapsible dome includes a plurality of apertures therein.
19. The end-effector as claimed in claim 17 , wherein body further includes a plurality of braces on an inner surface of the gripping shroud adjacent a base of the collapsible dome.
20. The end-effector as claimed in claim 17 , wherein the body includes at least one support rib on an inner surface thereof that extends along radial directions.
21. The end-effector as claimed in claim 17 , wherein the body includes at least one support rib on an inner surface thereof that extends along longitudinal directions.
22. The end-effector as claimed in claim 14 , wherein the stop member includes an opening therein to permit a flow of air at other than atmospheric pressure therethrough.
23. A programmable motion device including the end-effector of claim 14 .
24. A method of applying an end-effector of a programmable motion device to an object, said method comprising:
providing an end-effector including a flexible body that provides an open interior, said open interior being coupled to a vacuum source, and said body including a contact surface for contacting an object to be grasped by the end effector and an outer surface that surrounds the contact surface, said contact surface including at least one aperture through which a vacuum is provided;
engaging the contact surface of the flexible body to the object; and
permitting at least a portion of the contact surface of the flexible body to be drawn at least partially into the open interior of the body and the outer surface of the body to collapse around the object when a flow of air drawn by the vacuum source through the at least one aperture is reduced due to the at least one aperture being at least partially blocked,
wherein the end-effector further includes a stop member for limiting movement of the contact surface into the open interior.
25. The method as claimed in claim 24 , wherein the outer surface of the flexible body is curved inward such that a central region of the outer surface protrudes into the open interior.
26. The method as claimed in claim 24 , wherein the flexible body of the end effector is formed of a compliant material.
27. The method as claimed in claim 24 , wherein the outer surface is provided by a shroud that surrounds the contact surface.
28. The method as claimed in claim 27 , wherein the shroud is generally frustoconical in shape.
29. The method as claimed in claim 27 , wherein the shroud includes a scalloped edge.
30. The method as claimed in claim 27 , wherein the contact surface includes a collapsible dome that is adapted to collapse into the open interior of the end-effector body.
31. The method as claimed in claim 30 , wherein the collapsible dome includes a plurality of apertures therein.
32. The method as claimed in claim 30 , wherein body further includes a plurality of braces on an inner surface of the shroud adjacent a base of the collapsible dome.
33. The method as claimed in claim 30 , wherein the body includes at least one support rib on an inner surface thereof that extends along radial directions.
34. The method as claimed in claim 30 , wherein the body includes at least one support rib on an inner surface thereof that extends along longitudinal directions.
35. The method as claimed in claim 24 , wherein the stop member includes an opening therein to permit a flow of air at other than atmospheric pressure therethrough.