Apparatus for transporting circuit boards in a screen printer
December 13, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3688690 3812779 Device for automatically transferring printed circuit base plates from the loading to the printing zone Apparatus and method for decorating articles Apparatus for positioning substrates of different sizes of printed-wiring boards Silkscreen printer Silkscreen printing system for multicolor printing in a predetermined order of colors Multiple position, conveyor mountable workpiece carrier Printed circuit board conveyor and method Apparatus for selectively applying solder paste to multiple types of printed circuit boards InventorAssigneeApplicationNo. 460053 filed on 12/13/1999US Classes:101/114, STENCILING118/213, Mask or stencil118/500, WORK HOLDERS, OR HANDLING DEVICES198/345.1, Means engaging conveyor or load on a conveyor to align load for working198/345.3, Means engages a conveyor portion (i.e., pallet) which is separable from the conveyor drive to fix the position of said conveyor portion198/346.2Means to transfer a load back and forth between the mainline conveyor and the work stationExaminersPrimary: Colilla, Daniel J.Attorney, Agent or FirmInternational ClassesB65G 047/22B65G 015/14 B05C 013/00 B05C 021/00 AbstractA method and apparatus is provided for transporting circuit boards in a screen printer. In embodiments of the present invention, a transportation system is provided for a printer that prints material on a substrate. The transportation system has the ability to independently move substrates from one position to another within the printer without moving other substrates contained within the transportation system. In one embodiment, the transportation system includes a conveyor system and a plurality of lifters that lift substrates off of the conveyor system to prevent at least one substrate from moving when other substrates are moved by the conveyor system. In another embodiment, the transportation system includes a conveyor system and a plurality of retractable pins, that are individually controllable to be raised above the conveyor system to contact at least one substrate on the conveyor system and prevent the substrate from moving when other substrates are moved by the conveyor system.Field of SearchMovement of load changed relative to conveyor movement on contact of load with passive meansBy actuating item-holder relative to holder-carrying conveyor For changing both the elevation and the posture of successive items By turntable which lifts, turns and lowers item(s) System includes linear conveyor or portion thereof which shifts to lift or lower load before or after linearly conveying load relative to adjacent conveyor section Load obstructing gate and means for lifting load over the obstruction Engaging element moves load vertically and horizontally Engaging element moves load vertically only Load supporting conveyor portion is retarded or stopped with load at station without being disconnected from remainder of continuously moving conveyor Means engaging conveyor or load on a conveyor to align load for working Means engages conveyor to fix conveyor position relative to station Static means for supporting load or workman adjacent conveyor for operation on load Means to transfer a load back and forth between the mainline conveyor and the work station STENCILING Traveling-inker machines Processes Stencil and work support Mask or stencil With mask or stencil Mask or stencil WORK HOLDERS, OR HANDLING DEVICES Endless conveyer for work | |
