The invention concerns a design for a pair of spot-welding tongs, as well as an electrode-holder and power supply for the welding tongs.

Portable weldings tongs for high frequency welding of plastic sheets including an actuating mechanism for manually opening the tongs against the action of springs clamping the electrodes.

In addition, the welding clamp (68) is configured so that current flows through the first current path prior to flowing through the second current path when the welding clamp (68) is being clamped to the workpiece.

The device uses the multiplexing of the electrical energy sent into the heating strips of the welding tongs.

On welding tongs (1) for spot welding or resistance welding, welding electrodes (26, 27) are provided on center sleeves (20, 21), center sleeve holders or similar welding tongs elements.

A method and device for controlling current flow through a welding clamp (68) are provided.

The invention also relates to a method for adjusting the pressure of a spot welding rod of this type (2).

The main purpose of the soldering tweezers is to melt solder in the correct place; components are usually moved by simple tweezers or vacuum pickup.

The invention relates to a resistance welding machine comprising a welding clamp (112) consisting of a fixed arm (114) and a moving arm (116), the free ends (114A, 116A) of each of the arms (114, 116) being equipped with an electrode (118, 120).

The invention relates to a device for welding along folds comprising welding tongs and a spatter protection cover.

The invention relates to welding pincers especially used for spot welding, comprising two polar arms (1,2) which are pivotally mounted in a base body (3).

The welding clamp (68) also includes a second contact piece (86, 94) configured to contact the workpiece and to provide a second current path.

The aim of the invention is to provide a spot welding rod (2) of this type with a simple, compact, modular construction, whose drive (1) requires minimum maintenance and which permits a high number of spot welds.

After 10 years with the world leader in resistance welding pliers as purchaser of electrical and pneumatic components, I left the automotive industry to join the Lab’Science network.

According to the invention, such a welding tongs (1) with a balancing unit (17), for simple transformation of a rotational movement into a linear movement may be achieved by designing the connector element (19) with a curved end region.