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Gripping/Flattening Device for Populated Circuit Boards

IP.com Disclosure Number: IPCOM000060023D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Yanker, GM: AUTHOR

Abstract

When a machine is used to plug a circuit board edgewise into a mating connector, the board is mechanically gripped by its edges to avoid damage to components on the board. Since many boards are warped, aligning the connecting edge to the connector is not assured. The gripping/flattening device shown above corrects the warp in the circuit board without damaging components and thus facilitates handling and plugging of circuit boards into connectors. The device consists of a two-appendage gripper as shown in the figure. The right-hand appendage R has a pneumatic diaphragm 1 mounted against and sealed to a right-hand support plate 2.

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Gripping/Flattening Device for Populated Circuit Boards

When a machine is used to plug a circuit board edgewise into a mating connector, the board is mechanically gripped by its edges to avoid damage to components on the board. Since many boards are warped, aligning the connecting edge to the connector is not assured. The gripping/flattening device shown above corrects the warp in the circuit board without damaging components and thus facilitates handling and plugging of circuit boards into connectors. The device consists of a two-appendage gripper as shown in the figure. The right-hand appendage R has a pneumatic diaphragm 1 mounted against and sealed to a right-hand support plate 2. When inflated, the diaphragm 1 will close upon and apply a gentle, distributed pressure over a cluster of the modules 3 on the circuit board 4 so that the risk of damage to any module or solder joint is negligible. The left-hand appendage L has an array of brush-like bristles 5, all being of substantially the same length and attached to support plate
6. The length of the bristles 5 is chosen so that the tips of the bristles 5 make contact with the surface of circuit board 4 before the tips of the module pins 7 contact the left-hand support plate 6 when the diaphragm is inflated. With the diaphragm 1 deflated, the left- and right-hand appendages are positioned across the circuit board and the left-hand appendage is moved into engagement with the module pins. The diaphragm is inflated to hold the circuit board. The connector edge of the circuit board is driven fully into the mating connector. The diaphragm is deflated to release the hold on the circuit board. The left-hand appendage...