GB829419A - Improvements in and relating to a method for attaching articles to panels - Google Patents

Abstract

829,419. Assembling electronic components. UNITED - CARR FASTENER CORPORATION. Aug. 29, 1956, No. 26452/56. Class 83 (2). [Also in Group XXX] A method of assembling articles, particularly tube sockets, on an apertured panel, particularly a printed circuit panel on a chassis member, comprises attaching a row of spaced articles 8, Fig. 9, on an adhesive tape 30, feeding the tape to position the leading article in alignment with a panel aperture, separating the article from the succeeding portion of the tape and moving the article into the aperture. Tube sockets 8 are attached by their upper surfaces to an adhesive paper tape 30 which is wound into a reel 32. Three reels may be then mounted on a supply drum 220, Fig. 1, for successive feeding into the attaching machine 64 driven by an electric motor 66. This machine has a pair of front gripping fingers 42, Fig. 2, mounted on a reciprocating slide 110 actuated through a lever 112 by a cam-shaft 62. These jaws are spring-closed on to a number of sockets on the tape and feed them forwardly through one socket spacing; the jaws are opened by linkage 118, 128, 122 actuated from the cam-shaft. A pair of similar rear holding jaws 44 which do not reciprocate are provided. A vertical spindle 40 reciprocated from the camshaft through a lever 88 has depending prongs 100 which engage within the pin openings of the leading tube socket and frictionally retain it. The tape is severed rearwardly of the socket by a knife 46 actuated from the cam-shaft through a lever 148 which has a spring-biased lost-motion connection with a lever 140 connected to the knife and which is retained in its upper position by a latch 146, Fig. 3 (not shown). Movement of lever 148 first compresses the spring 152 until the latch is released by engagement with lever 148 whereupon the knife moves down rapidly under spring pressure to sever the tape. Alternatively, the adhesive tape may be pulled from the leading socket bv a roller and re-wound on a reel, Fig. 10 (not shown). The spindle 40 is rotated about its axis for orienting the sockets with the panel apertures, by a pinion 92 engaging a rack 96 reciprocated through linkage 170, 168, 166 from the cam-shaft. The rotary movement is controlled by adjustable stops 162, Fig. 4 (not shown), mounted on a turret mechanism 48 and which engage a stud on the rack 96. The turret is indexed by a pawl-and-ratchet mechanism 178, 174, Fig. 5 (not shown), driven from the cam-shaft whereby the turret is advanced a number of steps, corresponding to the number of sockets to be inserted, and is then automatically reset by a reset rod 206, Fig. 2, which releases a holding pawl 200, Fig. 5 (not shown), and causes the ratchet and turret to return under spring bias. After being oriented the leading socket is pressed into its panel aperture by further downward movement of spindle 40. The cam-shaft is driven from motor 66 through a one-revolution clutch 68, 74, Fig. 4 (not shown). Indexing of the supply drum 220, Fig. 1, for bringing a new reel of tape into operation, is controlled by a photo-cell 230, the old and new tapes being joined together by a presser 226.