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Patent Searching and Data


Title:
AUTOMATED 3D-PRINTING OF HOLLOW OBJECTS
Document Type and Number:
WIPO Patent Application WO/2020/065650
Kind Code:
A9
Abstract:
Methods, particularly automated methods, are provided, as well as 3D-printed composite and hollow objects and 3D-printing systems for printing them. Methods comprise deriving a central line of a hollow 3D object model, calculating reference point(s) and/or line(s) along an inner surface of the hollow 3D object model, and filling the hollow 3D object model with material that comprises a thread defined with respect to the central line and the reference point(s) and/or line(s) and with filling material surrounding the thread. The support construction thus formed may be removed from the 3D object by pulling on the thread, extracting it and the surrounding support filling from the hollow object, thus enabling 3D-printing of convoluted or elongated hollow objects and objects with narrow openings. The parameters of the thread, such as type of curve and thickness, are selected to ensure thread extraction without risk of tearing or knotting the thread.

Inventors:
BRESSLER YOAV (IL)
SHITRIT YANIV (IL)
EDER NAFTALI EMANUEL (IL)
Application Number:
IL2019/051061
Publication Date:
May 28, 2020
Filing Date:
September 25, 2019
Export Citation:
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Assignee:
STRATASYS LTD (IL)
International Classes:
B29C64/40; B29C64/106; B29C64/35; B29C64/386; B33Y10/00; B33Y30/00; B33Y40/10; B33Y50/00; B29C33/44; B29C33/76
Attorney, Agent or Firm:
ALKALAY, Yoav et al. (IL)
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