Apparatus for changing and repairing printed circuit boards

Details Apparatus for changing and repairing printed circuit boards Apparatus for changing and repairing printed circuit boards

1985-03-28

1986-05-13

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

29 33M, 295641, 29874, 156629, 156643, 156901, 156 94, 156250, 1562728, 1562733, 156510, 156578, 2281801, B44C 122, B32B 3100, C23F 102, B29C 1708

Patent

active

045884684

ABSTRACT:
A printed circuit board modification and repair system is presented which functions under computer control. Modification is accomplished by securing the printed circuit board to an X-Y positioning fixture mounted on a work station table. After indexing to a reference point, the X-Y positioning fixture can be moved fore, aft and sideways by computer command to bring a specific location on the printed circuit board under any one of a plurality of heads mounted above the work station surface. One head will contain an etch cutting bit for making cuts in printed circuit connections. A second head has mounted thereon a laser beam discharge device for removing conformal coatings and wire insulation. A third head mounts a wire dispenser for making new conductive paths and a glue dispenser for securing the newly positioned wire to the board. A fourth head contains an ultra-violet lamp for achieving quick cures of glues and epoxy. Solder paste is dispensed from another head and new solder connections made between the wire ends and printed circuit strips by the laser. All operations are controlled by the computer whose commands are sequenced from an operator control console. Programs for modifying or changing various types of printed circuit boards are stored on disks which can be inserted in the disk drive system of the computer.

REFERENCES:
patent: 3727284 (1973-04-01), Ragard et al.
patent: 3840962 (1974-10-01), Coller
patent: 4030180 (1977-06-01), Pierson
patent: 4079489 (1978-03-01), Kowalski et al.
patent: 4271573 (1981-06-01), von Roesgen
patent: 4283836 (1981-08-01), Janisiewicz et al.
patent: 4283847 (1981-08-01), May
patent: 4373655 (1983-02-01), McKenzie
patent: 4414741 (1983-11-01), Holt
patent: 4469553 (1984-09-01), Whitehead

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