Camera-based monitoring system for 3-dimensional printing

    公开(公告)号:US20210229365A1

    公开(公告)日:2021-07-29

    申请号:US17156565

    申请日:2021-01-23

    IPC分类号: B29C64/393 G06T7/00

    摘要: A collection of camera-based monitoring sub-systems can be added to a composite-based additive manufacturing (CBAM) system to autonomously inspect the integrity of each layer and remediate issues in real time. Cameras are located at various stations throughout the process. Resulting images are analyzed to see if processed pages are within tolerance based on comparison with models. Cameras can be placed at the print platen, on a rear conveyor that conveys powdered pages to the stacker and in the stacker itself to make sure pages are stacked and aligned properly. The present invention provides quality assurance and quality control to validate the build process at the layer level. This reduces the amount of post-build labor to perform, and since it shows data internal to the part, it dramatically reduces the amount of destructive testing required.

    Holdown process and system for platen

    公开(公告)号:US11679601B2

    公开(公告)日:2023-06-20

    申请号:US16876035

    申请日:2020-05-16

    IPC分类号: B41J11/06 B25B5/04

    CPC分类号: B41J11/06 B25B5/04

    摘要: A method/system of mechanical holdowns allows a substrate sheet in a CBAM (composite-based additive manufacturing technology) process to lie flat during printing. The invention includes a process of mechanically clamping sheets to be printed by a print head to a flat platen using a set of barrel cam driven clamping fingers. The finger supports are attached to the platen and the fingers can be raised and lowered with respect to the platen. Each finger can rotate while swinging downward toward a sheet at the edge of the platen. To clamp the sheet, the fingers are rotated to the perpendicular position and swung lower down to pinch the sheet to the platen. The process can include additional steps that release some, but not all, of the fingers to allow the sheet to relax before re-clamping them.

    Method and Apparatus for Stacker Module for Automated Composite-Based Additive Manufacturing Machine

    公开(公告)号:US20200223653A1

    公开(公告)日:2020-07-16

    申请号:US16827275

    申请日:2020-03-23

    摘要: A stacker component of an apparatus for automated manufacturing of three-dimensional composite-based objects for aligning registration of sheets. The stacker includes a sheet catcher; a frame having a base plate with the base plate having tapered registration pins to align a stack of substrate sheets. The registration pins are mounted in the base plate and project vertically to a location just below the sheet catcher. The stacker also has a presser with a press plate and a belt driver system that moves the press plate up and down allowing the press plate to exert downward pressure on the stack and a slide system with two guide rails that enable the base plate to be loaded and unloaded. A conveyor can be disposed so that after a substrate sheet exits a powder or printing system, the sheet is conveyed onto the sheet catcher.

    METHOD AND APPARATUS FOR STACKER MODULE FOR AUTOMATED COMPOSITE-BASED ADDITIVE MANUFACTURING MACHINE

    公开(公告)号:US20190134890A1

    公开(公告)日:2019-05-09

    申请号:US15922469

    申请日:2018-03-15

    摘要: A stacker component of an apparatus for automated manufacturing of three-dimensional composite-based objects for aligning registration of sheets. The stacker includes a sheet catcher; a frame having a base plate with the base plate having tapered registration pins to align a stack of substrate sheets. The registration pins are mounted in the base plate and project vertically to a location just below the sheet catcher. The stacker also has a presser with a press plate and a belt driver system that moves the press plate up and down allowing the press plate to exert downward pressure on the stack and a slide system with two guide rails that enable the base plate to be loaded and unloaded. A conveyor can be disposed so that after a substrate sheet exits a powder or printing system, the sheet is conveyed onto the sheet catcher.