Die set for automatic UV exposure system
AssigneeORC Electronic Products, A Divison of Benson Eyecare Corporation
InventorGreg Baxter
Life of this patent
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Abstract
A double-sided exposure apparatus is disclosed. The apparatus incorporates a phototool die set that provides high accuracy, speed and smooth operation with minimal particulate contamination of the exposure zone while allowing conventional work piece transport and handling. Upper and lower die halves are supported by four corner posts, guided by precision preloaded bearings to obtain high accuracy in front to back registration of art works maintained in the upper and lower die halves. The die halves are reversibly separated by upward motion actuated by a closed loop servo motor and lead screw system simultaneously elevating the four corner posts to which the upper die half is rigidly attached.
Claims14
A double-sided UV exposure system comprising:
- an exposure cabinet having a base and a support frame;
- a phototool die set having
- an upper die structure having four rod caps mounted in a spaced quadrilateral relation thereon and
- a lower die structure rigidly mounted to the support frame and having four bearing blocks mounted thereon in said spaced quadrilateral relation;
- an elevation structure having four closed end bearing blocks mounted thereon in said spaced quadrilateral relation;
- means for reversibly raising the elevation structure from a first lower position to a second upper position;
- and
- four rods removably supported in said closed end bearing blocks, said rods extending through said bearing blocks mounted to the lower die structure and received in said rod caps mounted to the upper die structure whereby raising the elevation structure from said first position to said second position raises the upper die structure from a first closed position to a second open position.
A double-sided UV exposure system comprising:
- an exposure cabinet having a base and a support frame;
- a phototool die set having
- an upper die structure having a substantially rectangular frame and four rod caps mounted on flanges attached proximate each corner of the rectangular frame, said rectangular frame further housing a glass art work support plate;
- a lower die structure having
- a substantially rectangular lower frame mounted to a base structure,
- a substantially rectangular upper frame supported by the lower frame and translatable in first and second horizontal directions, the upper frame housing a second glass art work support plate,
- four arms each having a first end attached to said base structure and a second end attached to one of four bearing blocks, said arms positioning said bearing blocks in a registration with said rod caps mounted to the upper die structure, and
- means for rigidly mounting said base structure to said support frame;
- an elevation structure having
- two horizontal supports each having two closed end bearing blocks mounted one on each end thereof, the horizontal supports having a width defined to place the closed end bearing blocks mounted thereto in a registration with the bearing blocks and end caps;
- means for reversibly raising the elevation structure including
- two ball screws received in ball nuts substantially centrally mounted to said horizontal supports, said ball screws each having a first end mounted for rotational movement in a bearing attached to said support frame and a second end mounted to a drive train, and
- a servo motor connected to the drive train to rotate said ball screws in a first direction elevating said horizontal supports and a second direction depressing said horizontal supports;
- and
- four rods removably supported in said closed end bearing blocks, said rods extending through said bearing blocks mounted to the lower die structure and received in said rod caps mounted to the upper die structure whereby raising the elevation structure from a first position to a second position raises the upper die structure from a first closed position to a second open position.
Dependencies are inferred from the claim text.