Abstract:
A method and means for forming electrical joints between intermediate parts of an elongated conductor and selected conductive elements on an electrical assembly. The electrical assembly is mounted upon a shiftable support means. A shiftable soldering assembly is positioned above the support means and carries an intermediate part of the elongated conductor. The soldering assembly and support means are shifted relative to each other to cause the intermediate conductor part to be held against a selected conductive element. The intermediate conductor part is then heated to cause the stripping or melting of the insulation, if any, from the conductor part and the melting of the solder on the conductive element in contact with the conductor part. The conductor part is then cooled to permit the melted solder to adheringly solidify to the conductor part. With the conductor part so anchored to the electrical assembly the soldering assembly and support means are shifted relative to each other to cause another intermediate part of the conductor to be held against another selected conductive element. This last mentioned intermediate conductor part is heated and cooled to cause its adherence to the contacting conductive element in the manner previously described for heating and cooling the first mentioned intermediate conductor part.
Abstract:
Stranded cables are joined utilizing apparatus and method of this invention by coating individual strands of the end portions of the cables to be joined with a suitable cleaning liquid and then ejecting a fluid under pressure against such end portions to remove the liquid and any foreign particles from the end portions including forcing such particles along the length of the cable. The cleaned end portions are then fixed in an associated welding apparatus and welded together with a conventional welding device using an access port provided in the apparatus and the welding action provided assures that each cable strand is fused to the weld material. Any excess weld material is then removed from the welded end portions after removal from the welding apparatus and a tubular sleeve may be fixed in position over the welded junction to reinforce the high-strength weld.
Abstract:
A FINE WIRE WELDING MACHINE FOR COLD BUTT WELDING SMALL DIAMETER WIRES THROUGH A MULTIPLE UPSTE TECHNIQUE, THE MACHINE INCLUDES A LOADING MECHANISM FOR ACCURATELY POSITIONING THE FINE WIRE STRANDS FOR SUBSEQUENT ENGAGEMENT WITH THE WELDING DIES AND THE WELDING DIES ARE MOVABLE IN A PLANE PRALLEL TO THEIR ABUTTING FACES FOR SHEARING THE WIRES, AND ALIGNING THE END OF THE WIRE FROM ONE SPOOL WITH THE END OF THE WIRE FROM ANOTHER SPOOL FOR THE SUBSEQUENT WELDING TECHNIQUE. AN IMPROVED OPERATING MECHANISM IS INCORPORATED FOR OPERATING THE DIE ACTUATING V-BLOCKS AND FOR GENERATING THE DIES AND GRIPPING MEANS IN A PREDETERMINED SEQUENCE. THE OPERATING MECHANISM INCLUDES MEANS FOR ADJUSTING THE OPENING OF THE DIES AND FOR PERMITTING RETRACTION OF THE DIES FOR THE LOADING PROCEDURE.
Abstract:
A method, machine and termination for connecting two or more insulated wire ends comprises placing them in a metal tube held between fusing electrodes. The electrodes are shaped to deform the tube and wires therein with the application of fusing pressure. During fusing, pressure builds first to press the assembly together, then heat and current are applied as the tube and internal wires are compressed. Fusing current first flows from a longitudinal region of the tube equally in both direction through the tube metal to soften the tube and distribute the fusing heat broadly. As the wire insulation is burned off or flows away, current also passes through the bare wire ends to aid the fusing process. For tinned copper tubes, some of the inside tin layer flows to wet copper surfaces and dissolve copper impurities. Some tin flows to seal small spaces between the fused wires. Some of the tin on the outside surface and inside surface of the tube may vaporize. A fusing machine is also disclosed for carrying out the method that is suspended from a standard retractable winch cable so that the electrodes can be easily positioned in free space.
Abstract:
In order to achieve reliable welding, by reducing welding scars, of a flat conductor to another bonding member by an ultrasonic welding machine, a curved beveled portion facing a bonding member, a plurality of indented grooves running at a right angle to the direction of vibration of the horn tip and flat surfaces, which come in contact with a bonding member, are formed at either one of or both of the horn tip and the anvil, wherein the curved beveled portions, the indented grooves and the flat surfaces are formed facing opposite a low strength conductive member, and the indented grooves are formed at a width that is smaller than that of the flat surfaces provided between the individual indented grooves and curved beveled portions are formed at the edges where the indented grooves meet the flat surfaces.
Abstract:
A method and apparatus of fusing a pin to a wire to reliably form a good quality fusion joint includes placing the pin and insulated or uninsulated wire in a notch of a lower fusing electrode so that the pin is spaced a predetermined distance above the wire. The upper fusing electrode applies fusing current and heat symmetrically to the pin and notch side walls and the portion of the lower electrode beneath and in contact with the wire. Heat is transferred to soften the pin and burn or vaporize the insulation off the wire before the pin and wire touch. Since all parts are held symmetrically, parts can not skew or burn off unevenly. Electrode pressure builds to drive the soften, heated pin and wire together and to apply fusing current through the contacting pin and wire to form a good fusion joint. Another aspect of the invention includes forming the lower fusing electrode with a plurality of fusing notches to afford quick operator set-up and sequential, automatic fusing of the series of wire/pin assemblies. Openings and channels are formed adjacent the notches to concentrate the fusing heat to the portion in contact with the wire.
Abstract:
The invention relates to a device for compacting and then welding electric conductors, especially for making through or terminal connections of flexes by means of ultrasound in a compression chamber adapted to the conductor and adjustable for height and width, in which the conductors to be welded are first compacted and then welded. The compression chamber is adjustable to a predetermined height-width ratio regardless of the cross section of the conductors to be welded.
Abstract:
To provide a beam welding terminal structure which holds a connection member to be connected, such as a wire, from opposite sides thereof, and firmly welds the connection member by irradiation of a beam such as a laser beam, a beam welding terminal structure includes holding walls at opposite sides, and a connection member to be connected is welded to the holding walls by irradiation of a beam. A projection extends from at least one of the holding walls and beyond the connection member in a direction of the height. A rectangular wave-shaped base wall has longitudinal side portions, extending in a direction intersecting the connection member, and transverse side portions extending parallel to the connection member. The holding walls each having the projection are formed respectively on the plurality of transverse side portions, and a pair of opposed holding walls are disposed respectively on opposite sides of the connection member, and are formed on one of the longitudinal side portions or each of more than one of the longitudinal side portions. In another form of structure, central portions of the pair of holding walls are bent inwardly to provide a reduced-width portion, and the reduced-width portion has projections extending beyond the connection member in a direction of the height, and the projection and the holding wall are interconnected by a mountain-like curved guide portion.
Abstract:
In an apparatus intended especially for connecting electrical conductors by ultrasonic welding, in which a two-part anvil comprising three working surfaces is associated with a sonotrode for defining a compaction chamber on all sides, the two anvil parts are moveable in two different directions relative to each other and the sonotrode and are each driven by a pneumatic cylinder and piston assembly. To achieve an easily handled apparatus, the two pneumatic cylinders are disposed alongside each other axially parallel to each other and to the central axis of the sonotrode in a housing and act upon transmission elements, which deflect the working movements of the pneumatic pistons through a right angle into the anvil parts. As a result the apparatus has a slender external form of small dimensions and enables a pistol grip handle to be fitted, by a trigger of which the functional parts of the apparatus are controlled. In a further embodiment the housing can be releasably connected either to a pistol grip-like handle or to a coupling element.