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1.发明授权公开(公告)号：US11541671B2
公开(公告)日：2023-01-03
申请号：US16683463
申请日：2019-11-14
申请人： XEROX CORPORATION
发明人： Jeffrey J Bradway , Linn C Hoover , Erwin Ruiz , Paul M Fromm
摘要： A universal object holding mechanism for holding three-dimensional objects for printing thereon uses multiple conformable balls mounted within a pattern of holes in a two part back plate. The multiple conformable balls are pressed into an object, which in turn, is pressed against a datum surface that represents desired spacing away from print heads. Vacuum is applied to the multiple conformable balls which grip the object. The multiple conformable balls are filled with particulates that cause the multiple conformable balls to become rigid when the vacuum is applied. This contributes to keeping the object from moving when it is being moved past a print head.
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公开(公告)号：US10086518B1
公开(公告)日：2018-10-02
申请号：US15477478
申请日：2017-04-03
申请人： XEROX CORPORATION
发明人： Paul M Fromm , Jeffrey J Bradway , Erwin Ruiz , Linn C Hoover
IPC分类号： B25J15/02 , B25J15/08 , B25J15/10 , B25J15/00 , H01L21/687 , H01L21/677
摘要： A universal gripper includes a set of pivoting fingers on pins mounted uniformly around a fixed ring. The fingers attached by springs to a movable ring are able to rotate inward, toward the center, until they meet an object and stop. Multiple universal grippers could be stacked to allow for different contours throughout objects and facilitate the pivoting fingers conforming and wrapping around a centerline of the objects. Once the universal gripper fingers are in contact with the surface of the object, they stop moving and springs attached to the fingers elongate as the movable ring continues to move over its full range of motion. An alignment tool can be used for staging and acquiring objects in a repeatable and consistent manner.
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公开(公告)号：US11267105B2
公开(公告)日：2022-03-08
申请号：US16539213
申请日：2019-08-13
申请人： XEROX CORPORATION
发明人： Linn C Hoover , Jeffrey J Bradway , Erwin Ruiz , Paul M Fromm
摘要： A generic holder includes a generic holder plate and a 3-D insert plate. The 3-D insert plate contains locating features mirrored to the backside of the part to be printed and vacuum grippers to secure the part in the insert plate. The insert plate is secured in the generic holder plate that includes vacuum couplings. The part is located on the insert plate and vacuum is applied to the generic holder plate and insert plate to hold the part for printing.
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公开(公告)号：US10279456B2
公开(公告)日：2019-05-07
申请号：US15477427
申请日：2017-04-03
申请人： XEROX CORPORATION
发明人： Paul M Fromm , Jeffrey J Bradway , Erwin Ruiz , Linn C Hoover
摘要： A universal object holding mechanism for holding three-dimensional objects for printing thereon uses an array of suction cups reciprocally connected to a vacuum box to acquire objects from a staging platen while in a horizontal position and then pivot into a vertical position for movement of the objects past print heads. A plenum connected to the vacuum box is valve controlled to allow a low flow rate to the vacuum box to acquire objects and then a high flow rate pulse to close off all un-sealed suction cups with ball valves.
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公开(公告)号：US10087020B1
公开(公告)日：2018-10-02
申请号：US15626200
申请日：2017-06-19
申请人： XEROX CORPORATION
发明人： Erwin Ruiz , Linn C Hoover , Jeffrey J Bradway , Paul M Fromm
摘要： A system for securing, holding and aligning an object in a rigid subassembly include a conformable gripper ball. The gripper ball having the capability to conform to an object and then hold the object after contact. The conformability of the gripper ball is changed with air pressure to allow the gripper ball to hold the object. The gripper ball is mounted onto a rigid frame, which can then be docked into a loading station of a printer that prints on 3-D objects. With the addition of a vision system, the gripper assembly could be used with alignment markings on the loading station to allow manual alignment of the object to the rigid subassembly prior to loading into the printer.
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公开(公告)号：US10369806B2
公开(公告)日：2019-08-06
申请号：US15645189
申请日：2017-07-10
申请人： XEROX CORPORATION
发明人： Linn C Hoover , Erwin Ruiz , Jeffrey J Bradway , Paul M Fromm
摘要： A universal object holder device for securing 3-D objects for printing on the objects includes one or more ball shaped conformable grippers filled with irregular-shaped granular material with the one or more ball shaped conformable grippers each possessing an integrated vacuum gripper extending through an outer surface thereof. The combination of ball and vacuum gripper enables the universal object holder device to pick up a wider range of objects including those whose diameter is larger than the diameter of each gripper ball.
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公开(公告)号：US20200276847A1
公开(公告)日：2020-09-03
申请号：US16288157
申请日：2019-02-28
申请人： XEROX CORPORATION
摘要： A movable cleaning web can be positioned and allowed to move from a supply spool, between a platen (e.g., vacuum, marking) and the inside of a belt (e.g., marking, transport), into a take-up spool. The cleaning web can move opposite the process direction of the belt. The web can reduce contamination on the platen, inside of belt and along belt rollers.
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8.发明授权公开(公告)号：US10518421B2
公开(公告)日：2019-12-31
申请号：US15477454
申请日：2017-04-03
申请人： XEROX CORPORATION
发明人： Jeffrey J Bradway , Linn C Hoover , Erwin Ruiz , Paul M Fromm
摘要： A universal object holding mechanism for holding three-dimensional objects for printing thereon uses multiple conformable balls mounted within a pattern of holes in a two part back plate. The multiple conformable balls are pressed into an object which in turn is pressed against a datum surface that represents desired spacing away from print heads. Vacuum is applied to the multiple conformable balls which grip the object. The multiple conformable balls are filled with particulates that cause the multiple conformable balls to become rigid when the vacuum is applied. This contributes to keeping the object from moving when it is being moved past a print head.
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9.发明授权公开(公告)号：US10457069B2
公开(公告)日：2019-10-29
申请号：US15477488
申请日：2017-04-03
申请人： XEROX CORPORATION
发明人： Jeffrey J Bradway , Erwin Ruiz , Paul M Fromm , Linn C Hoover
摘要： A universal staging platen for many types of objects in Direct to Object printing has a datum surface which is configured to represent the plane of optimal print head distance. The universal staging platen has an array of small pins protruding from it that conform under spring load to an object placed on the datum surface. Once in a conformed state, an operator can lock the pin position so that the object is precisely positioned for acquisition by a gripper mechanism. An added benefit of locking the pin position is that subsequent copies of the object may be loaded without any additional alignment or setup. The distance the contour pins protrude through the datum surface may be adjusted so that the pin ends are sufficiently far away from the gripper mechanism being used.
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公开(公告)号：US10308038B2
公开(公告)日：2019-06-04
申请号：US15645216
申请日：2017-07-10
申请人： XEROX CORPORATION
发明人： Linn C Hoover , Paul M Fromm , Erwin Ruiz , Jeffrey J Bradway
摘要： An apparatus for holding three-dimensional parts for printing includes a frame with sides and a solid bottom and a part gripping membrane mounted across the face of the frame. A biasing membrane is mounted at the midpoint of the frame height to form an air chamber between the frame bottom and the biasing membrane and a vacuum chamber between the biasing membrane and the part gripping membrane positioned on the face of the frame. To grip a part, the gripping membrane is stretched over the part, positive pressure is applied to the air chamber to compress the granular material within the air chamber and further stretch the gripping membrane over the part, and then vacuum is applied to the vacuum chamber between the two membranes to maintain the granular material compression and grip on the part when air pressure is relieved from the air chamber.
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