Systems and methods for gripper finger release assemblies for specimen gripper units are disclosed. Embodiments of the invention include release elements to enable replacement of gripper fingers without the need of tools or without the need to demount and mount the entire gripper unit for exchange o
Systems and methods for gripper finger release assemblies for specimen gripper units are disclosed. Embodiments of the invention include release elements to enable replacement of gripper fingers without the need of tools or without the need to demount and mount the entire gripper unit for exchange of gripper fingers. A release element may comprise a first sliding element and a second sliding element coupled to a plate such that pressing the second sliding element enables the first sliding element to release a gripper finger coupled to the first sliding element.
대표청구항▼
1. A gripper unit for gripping a tube, the gripper unit comprising: a plurality of release elements;a plurality of elongated gripper fingers respectively associated with the plurality of release elements, the plurality of elongated gripper fingers adapted to move inward to grip the tube and outward
1. A gripper unit for gripping a tube, the gripper unit comprising: a plurality of release elements;a plurality of elongated gripper fingers respectively associated with the plurality of release elements, the plurality of elongated gripper fingers adapted to move inward to grip the tube and outward to release the tube, the plurality of elongated gripper fingers comprising a plurality of first cavities, respectively;a mounting structure comprising a plurality of second cavities,wherein the plurality of elongated gripper fingers are removably coupled to the mounting structure by the plurality of release elements, respectively,wherein each release element comprises a plate, and a first sliding element and a second sliding element coupled to the plate, wherein the first sliding element is configured to pass through a first cavity in an elongated gripper finger in the plurality of elongated gripper fingers and a second cavity in the mounting structure to secure the elongated gripper finger to the mounting structure and to allow the elongated gripper finger to pivot inward about the first sliding element to grip the tube and outward about the first sliding element to release the tube, andwherein the second sliding element is configured to enable the first sliding element to release the elongated gripper finger when the second sliding element is pressed. 2. The gripper unit of claim 1, further comprising a cap, wherein the second sliding element is coupled to the cap, and wherein the second sliding element is longer than the first sliding element. 3. The gripper unit of claim 2, wherein the cap is configured to pass through a third cavity on the mounting structure. 4. The gripper unit of claim 1, further comprising: a spring coupled to the second sliding element, the spring configured to push the plate towards the mounting structure. 5. A system comprising the gripper unit of claim 1. 6. The gripper unit of claim 1 wherein the longitudinal direction of each elongated gripper finger is perpendicular to the orientation of the first sliding element of a corresponding release element by means of which the respective elongated gripper finger is attached to the mounting structure. 7. The gripper unit of claim 1 wherein the front ends of the plurality of elongated gripper fingers face downward and the first sliding element is horizontal. 8. A gripper unit comprising: a release element;a first elongated gripper finger comprising a first cavity;a mounting structure comprising a second cavity,wherein the first elongated gripper finger is removably coupled to the mounting structure by the release element, and wherein the release element comprises a first sliding element, wherein the first sliding element is configured to pass through the first and second cavities to secure the first elongated gripper finger to the mounting structure; andwherein the gripper unit further comprises a spring operatively coupled to the first sliding element; andwherein the release element further comprises a plate, anda pin coupled to the plate and to the mounting structure,wherein the plate is configured to pivot about an axis defined by the pin to release the first elongated gripper finger. 9. The gripper unit of claim 8, wherein the spring is configured to urge the first sliding element to slide out from an opening in the plate to release the first elongated gripper finger, when the plate is rotated. 10. A method comprising: removably coupling a plurality of elongated gripper fingers, each comprising a first cavity, to a mounting structure of a gripper unit, adapted for gripping a tube, the mounting structure comprising a plurality of second cavities, by a plurality of release elements, wherein each release element comprises a plate, a first sliding element coupled to the plate and a second sliding element coupled to the plate, and wherein each first sliding element is configured to pass through both the first cavity of an elongated gripper finger out of the plurality of elongated gripper fingers and a second cavity of the mounting structure to secure the elongated gripper finger to the mounting structure, wherein each elongated gripper finger pivots about the first sliding element when the plurality of elongated gripper fingers moves inward to grip the tube or moves outward to release the tube; andgripping or releasing the tube. 11. The method of claim 10, wherein the plurality of release elements comprises a first release element and wherein the plurality of elongated gripper fingers comprises a first elongated gripper finger, and wherein the method further comprises: pressing the second sliding element of the first release element to remove the first sliding element of the first release element from the first cavity of the first elongated gripper finger to release said first elongated gripper finger from the mounting structure,removing the first elongated gripper finger from the mounting structure,aligning the first cavity of a second elongated gripper finger with the first sliding element of the first release element; andremovably coupling the second elongated gripper finger to the first sliding element of the first release element by releasing the second sliding element. 12. The method of claim 10 wherein the longitudinal direction of each elongated gripper finger is perpendicular to the orientation of the first sliding element of a corresponding release element by means of which the respective elongated gripper finger is attached to the mounting structure.
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