Metal working – Means to assemble or disassemble – With means to test work or product
Patent
1981-05-06
1984-07-10
Crane, Daniel C.
Metal working
Means to assemble or disassemble
With means to test work or product
29740, 29759, 295646, 156378, 156379, 156562, B23P 2100
Patent
active
044584121
ABSTRACT:
Described is a machine for pre-gluing raw circuit surfaces of printed circuit boards (P.C. boards) at an adhesive station and properly positioning the P.C. boards at a placement station for placement of leadless electronic components (chips) onto the adhesive. A carousel provides program preselected vertical supply of taped components to a feeder assembly which feeds individual chips onto a nozzle of a turret-type vacuum head at a pick-up station. The turret-type head has four nozzles spaced 90.degree. apart about the central axis of the head. As the turret is rotated, a chip is transported by a nozzle, sequentially, from the pick-up station to a centering and testing station, a centering and orienting station, and a placement station. Located between the testing and orienting stations is a chip removal station for ejecting defective or inverted chips. Sensors are located at the adhesive and placement stations to detect defective P.C. boards so that they may be bypassed. A controller, such as a digital computer, provides additional monitoring and controls the operation of the machine.
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Hoebener, K. G., "Multiple Size Chip Pickup, Orientation and Placement Station," from IBM Technical Disclosure Bulletin, vol. 22, No. 7, Dec. 1979, pp. 2757-2761.
Godat, J. J. L., "Interchanging Articles", from IBM Technical Disclosure Bulletin, vol. 8, No. 5, Oct. 1965, pp. 776, 777.
Dean Weibley J.
Johnson Charles E.
Ragard Phillip A.
Crane Daniel C.
Universal Instruments Corporation
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