System for rapidly producing plastic parts

Details System for rapidly producing plastic parts System for rapidly producing plastic parts

1989-06-16

1991-06-25

Sugarman, Scott J.

Recorders

Record receiver deforming

346 77R, 346160, 350360, 365126, G11C 1304

Patent

active

050261460

ABSTRACT:
A system for rapidly producing a plastic part from a curable liquid which solidifies when subjected to ultra-violet light energy operates with a processor and computer aided design software. The system includes a receptacle and a moving mechanism which is electrically coupled to the processor. The receptacle stores the curable liquid part of which lies in a solidification plane. The system also includes an electronically erasable mask, a drawing device and a projecting system all of which are electrically coupled to the processor. The electronically erasable mask is an ultra-violet wavelength isolating image buffer. The drawing device may be a back lighted liquid crystal display or a high resolution cathode ray tube or an infrared diode laser raster scanner and electronically draws a plurality of images of successive cross-sectional laminae onto the electronically erasable mask. The projecting system projects ultra-violet light energy onto the electronically erasable mask so that the electronically erasable mask transfers frame-by-frame exposure of the plurality of images in order to reflect the ultra-violet light energy onto the curable liquid in the solidification plane thereby forming the successive cross-sectional laminae. The moving mechanism incrementally moves the cross-section laminae which are being formed in order to build up the plastic part in stepwise fashion.

REFERENCES:
patent: 3609706 (1971-09-01), Adamson
patent: 3609707 (1971-09-01), Lewis et al.
patent: 4023969 (1977-05-01), Sheridon
patent: 4041476 (1977-08-01), Swainson
patent: 4078229 (1978-03-01), Swainson et al.
patent: 4111538 (1978-09-01), Sheridon
patent: 4238840 (1980-12-01), Swainson
patent: 4333165 (1982-06-01), Swainson et al.
patent: 4575330 (1986-03-01), Hull

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