by • May 1, 2016 • No Comments
Disney Research has filed a patent for a 3D printing innovation that uses high-intensity light to harden photo-sensitive resin in a single system, removing the require for layer-by-layer printing.
The patent describes a machine for printing in “a just about instantaneous manner.”
“Presently, 3D printing is incredibly slow and time consuming. For example, it may take several hours to print a single 3D object actually if the 3D object is relatively tiny (e.g., several inches in diameter and four to 12 inches tall),” Disney noted in its patent filing. “The 3D printing system that uses conventional 3D printing equipment … is limited in its speed by the speed of the mechanism moving the print head to every new position on a print layer.”Disney ResearchA side view of a 3D printing device with one optical assembly providing a real image inside a print chamger or vate of photocuring resin.Similar to stereolithography (SLA) 3D printing, Disney’s “3D Printing by Volumetric Addition Through Selective Curing of a Fluid Matrix” uses two or additional high-intensity light beams to harden photosensitive resin.Unlike SLA printing equipment, yet, Disney’s proposed printing device may not harden resin by drawing the outline of an object layer-by-layer. Instead, the entire object may be projected into the center of the resin, creating a whole version at once.
The patent describes a “blue light” with a 450 nanometer (nm) wavelength, a “violet light” with a 405nm wavelength and an “ultraviolet light” with a wavelength of 365nm. The 3D printing device may use resins that cure with invisible wavelengths that are less affected by ambient light.
The photosensitive resin may in addition require to both absorb and transmit light at the curing wavelength. “The maximal curing depth determines the dimensions of the biggest object that can be cured. Higher transmission results in a slower rate of curing,” Disney wrote.
The printed object, that may be supported by the thick resin itself, may just be lifted out once it was finished.”In several test operations, a 3D printing device via photo-curing liquids has been proven effective in generating 3D objects in several minutes or less pretty than several hours,” the patent noted.Disney ResearchA functional block view revealing another 3D printing device via an optical assembly which include a rotating curved mirror to provide real images in a photo-curing resin.The SLA printing device is not Disney’s initially foray into additive making.
Disney Research filed a patent for a “Layered Fabric 3D Printer” that works like a fused filament fabrication printing device, but cuts out patterns via “off the shelf” fabrics. The layers of fabric are and so bonded via a heat sensitive adhesive.
Disney Research in addition filed a patent to limit unauthorized copying of its merchandise via a 3D printing device that may auand soticate the 3D or .stl (stereolithography) file.
“The digital file defines not just the outer shell of the 3D object but in addition defines a one-of-a-kind identifier or identification (ID) element to be printed in the inner volume (inside the outer shell) of the 3D object in one or additional layers,” Disney noted.
The ID element may be a passive radio frequency identification (RFID) tag that is embedded in the 3D printed object.
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by admin • November 28, 2016
by admin • November 28, 2016