Abstract: A device of vibro-spot welding includes: a vibration cylinder housing having first and second chambers; an annular rod integrally connected with a first piston disposed in the first chamber and having one end penetrating a side of the vibration cylinder housing; a circular rod penetrating the annular rod integrally connected to a second piston disposed in the second chamber and having one end penetrating the side of the vibration cylinder housing; a leading-in housing wrapping an exterior surface of the vibration cylinder housing and receiving current; an electrode supporter threaded with one end of the leading-in housing; a heating electrode threaded with one end of the electrode supporter; a first vibration electrode threaded with the one end of the annular rod and penetrating the electrode supporter and the heating electrode; and a second vibration electrode threaded with the one end of the circular rod and penetrating the first vibration electrode.

Abstract: Provided is an electrode support structure in which local heating can be prevented from occurring in a workpiece during the electric heating. The electrode support structure is usable for applying a load to the electrodes used for the electric heating of a metal plate, and comprises at least two members, i.e., a first member to which the electrodes are fixed and a second member which receives the load from the first member or connects the first member to a load means. The support structure in which the two members are joined to each other through an elastic member can uniformly apply the load to the electrodes for electric heating so that the electrodes can uniformly contact with the workpiece, whereby the workpiece can be uniformly heated.

Abstract: A pogo welding apparatus especially for spot welding metal sheets at selected locations spaced away from their edges wherein the sheets are held in a temporary assembly with the selected locations engaged and separate programmable positioners move a primary (pogo) electrode and a backup electrode sequentially against opposite sides of the selected locations to spot weld the sheets at the selected locations in sequence. Various alternative programmable positioners, including robots of varying types, may be used to carry the electrodes. A multi head back-up electrode is adapted for efficient use of the apparatus and method in difficult to reach workpiece locations.

Abstract: A pogo welding apparatus especially for spot welding metal sheets at selected locations spaced away from their edges wherein the sheets are held in a temporary assembly with the selected locations engaged and separate programmable positioners move a primary (pogo) electrode and a backup electrode sequentially against opposite sides of the selected locations to spot weld the sheets at the selected locations in sequence. Various alternative programmable positioners, including robots of varying types, may be used to carry the electrodes.

Abstract: A pogo welding apparatus especially for spot welding metal sheets at selected locations spaced away from their edges wherein the sheets are held in a temporary assembly with the selected locations engaged and separate programmable positioners move a primary (pogo) electrode and a backup electrode sequentially against opposite sides of the selected locations to spot weld the sheets at the selected locations in sequence. Various alternative programmable positioners, including robots of varying types, may be used to carry the electrodes.

Abstract: A first electrode with a first clamping surface and a second electrode with a second clamping surface are moveable towards and away from each other during working cycles of the apparatus. The first and second clamping surfaces face each other and serve to securely clamp a workpiece to be welded and to supply an electrical current required for this operation. The second clamping surface of the second electrode is larger than the first clamping surface of the first electrode, and radial displacing members are provided to displace the second electrode with respect to the first electrode between successive working cycles. This is necessary, particularly during welding or soldering series of small articles, in order to reduce the frequency of wear due to heat accumulation and to reduce the need to frequently exchange the electrodes or electrode inserts carrying the clamping surfaces, which exchange is caused by the heat accumulation.

Abstract: A resistance welding device includes a base structure having vertically separated ceiling and floor members. The ceiling member includes a first pair of rail members to establish a y-axis and to thereby dependently support a first mounting structure. The first mounting structure in turn includes a second pair of rail members to establish an x-axis and to dependently support a pair of electrode guns therefrom. In such a manner, a matrix configuration of welding points can be welded so as to weld a pair of weldable members to one another.

Abstract: An installation for resistance-welding of structural parts, especially in the automotive industry, with a half-tong that is pivotal about an axis and longitudinally displaceable; the half-tong supporting thereon the welding electrode is pivotal about all three coordinate axes.

Abstract: The present invention relates to the manufacture of radio-electronic equipment. The proposed apparatus for soldering a row of conductors onto a board comprises a housing having a table for a board to be arranged thereon, and a soldering head kinematically coupled to a carriage driven by a drive mechanism. The soldering head is kinematically coupled to the carriage by means of a rod adapted for movement in the carriage and having a holder, the soldering head being spring-loaded and arranged in the holder.