| 摘要 |
1,269,603. Soldering; welding by pressure. INFOREX Inc. 15 June, 1970 [13 June, 1969], No. 28957/70. Heading B3R. A method of wiring an electrical circuit on a circuit board having contacts e.g. 14, 15, 16 suitable for connection to circuit components comprises the steps of positioning routing pins relative to the contacts, passing insulated wire through a bonding head e.g. as described in Specification 1,269,602, moving the head and board relatively so that the wire extending from the head successively bears against contacts to which connection is to be made and applying heat to the head at each contact which the head bears against to vaporize the insulation and bond the wire to the contact, the relative movement of the head from contact to contact being effected only between rows of the routing pins so that the wire does not cross or bear against any contact to which connection is not to be made. The routing pins may be mounted on a fixture so as to project through plated through holes e.g. 24, 25, 26, 27 in the circuit board when placed on the fixture and the fixture may be mounted on a table movable only in one of two orthogonal directions at a time. Alternatively the routing pins may be carried by a vacuum device, released therefrom into the holes and picked up thereby after wiring is completed. Alternatively pins projecting from flat packs bonded to the other side of the board may project through the plated through holes and serve as routing pins. Apparatus, Fig. 4, for simultaneously wiring several circuit boards comprises a plurality of soldering heads 32 ... 35 each having its supply reel 36 ... 39 for insulated wire and mounted above a table 31 adapted to be positioned by an automatic tape-controlled positioning system. |
