Patent GB-1152900-A (GB)
Title: Apparatus for Securing Electrical Connectors to a Panel
IPC: B23P21/00
Filed: 1967-12-01
Abstract: 1,152,900. Attaching sockets to circuit boards; bending; shearing. AMP Inc. 1 Dec., 1967 [4 Jan., 1967], No. 54813/67. Headings B3A, B3E and B3W. [Also in Division H2] An apparatus for securing an electrical socket 138 to a panel P comprises a feeding device to feed a strip 136 of connectors to a position under a pair of tools 100, 102 on a ram one of which has cutting edges to shear one leg L4 of the connector from the strip, and shear the strip edge 136 transversely and the other bends the connector at right-angles to the strip so that the legs L2, L4 are vertical. The connectors are then indexed to a vertical passage down which they are pushed by a tool 68 to pass through a hole H in the panel and the legs are bent by an anvil 52. The tool 68 is mounted on a piston 62 which is reciprocated in a cylinder 60 by a pneumatic piston-cylinder assembly 26 through toggle linkage 8, 14. The cylinder is mounted in a holder 36 pivoted to the apparatus frame and biased anticlockwise by a spring 46. The toggle arms are connected to the piston 62 by a pin 64 slidable in slots in the cylinder wall. Between the lower arm and the cylinder wall a plate 92 is mounted on the pin and guided for vertical movement with the piston. The plate 92 has a block 98 secured thereto by a pair of bolts 96. The block 98 carries the tools 100, 102 for shearing and bending. At the other side of the cylinder a plate 94 is mounted to move with the piston and shear the strip edges between an edge 95 and the shear plate 80. The scrap is ejected down shoots. In operation the strip is indexed to the apparatus by an arm (118), Fig. 2 (not shown), which is reciprocated pneumatically, and the arm 118 retracted over the next connector in the strip to its retracted position. The stroke of the arm is adjustable for various strips. A pedal is depressed to cause the piston 24 to advance and pivot the holder 36 by means of a cam surface 20 towards the anvil to clamp the panel between the guide sleeve 84 and the anvil 52. When the holder abuts the panel the tool 68 descends to shear the leg L3 from the connector between a shear edge (162), Fig. 12 (not shown), on the tool and a shear edge 164 on the shear plate 80. Simultaneously the tools 100, 102 mounted on the plate 92 shear the leg L4 of the next but one connector from the strip and bend the succeeding connector to the vertical position. At the end of the stroke the clevis 22 on the piston rod 24 abuts an adjustable stop and a microswitch to cause the piston to retract and the tool to raise. At the top of the stroke a screw (126), Fig. 2 (not shown), abuts a plunger in a cylinder (128) to initiate the feeding stroke to index the strip by one connector spacing. In an alternative embodiment the connectors 140b have four legs, Fig. 19 (not shown), and the bending tool (222), Fig. 16 (not shown), has arms (220) between the legs to bend the legs L1 L2 to the vertical against a trapezoidal bar (226). The tool (204) inserts them in holes H1, H2 in a panel P<SP>1</SP> and an anvil (208) bends the legs. In this embodiment the sockets are arranged across the panel and the legs can be bent inwards or outwards.