A component loading-welding system for welding a component panel to a vehicle body panel includes a rotation portion body having first and second opposing sides. The first opposing side is coupled to a robot arm. A picking device is installed in the rotation portion body and is configured to hold and release the component panel. A vehicle body pressurizing tip is installed in the rotation portion body. A pressurizing portion body is rotatably installed at the second opposing side of the rotation portion body. A pin clamp is installed in the pressurizing portion body and is configured to clamp the component panel. A component pressurizing tip is installed in the pressurizing portion body and is configured to apply pressure to the component panel. A multi point projection welding method is also disclosed.

A cap tip assembly for spot welding is disclosed. The cap tip assembly for spot welding is configured to spot-weld a first base material in which a flange is formed and a second base material overlapping the flange in a vertical direction. The cap tip assembly for spot welding includes a tip body provided in a shape of a rectangular block in which a round-shaped welding section is formed on a front side of a top surface, and a collet member coupled to the tip body to guide a conductive tape to the welding section.

A battery manufacturing method includes: winding positive and negative electrode plates and a separator to form a wound electrode assembly; cutting unwound portions of the positive and negative electrode plates and the separator such that the separator constitutes an outermost layer of the wound electrode assembly when the winding is completed; further winding around the wound electrode assembly the cut unwound portions; fixing a part of a terminal end of the separator in a lateral direction to the wound electrode assembly; and performing heat welding on parts of both lateral ends of an outermost portion of the separator in the wound electrode assembly, which are located above an electrode active material-uncoated portion of the positive or negative electrode plate to fix the lateral ends to the wound electrode assembly.

A battery-powered electronic resistance welding machine for sheet metal repair, comprising a machine unit (10), which includes a handle (12) and an activation and deactivation button (13), at least one first rod (14), which is constrained in a sliding fashion (F) to a terminal (15) of the machine unit (10), which has, at one free end, a ground electrode or tip (16) that comes into contact with at least one metal portion to create an electrical resistance circuit, at least one second rod (17), constrained in a sliding fashion (F) to the terminal (15), which has, at one free end, a welding or terminal electrode or tip (18) for the fixing of repair accessories of the metal portion. There is a rechargeable battery (11) in the machine unit (10), for example a lithium-polymer accumulator, which allows the electronic resistance welding machine to be powered without using the mains power supply.

The present invention provides: a solid-phase spot-welding method with which the welding temperature can be controlled accurately and with which a reduction in the welding temperature can be achieved, regardless of the type of metal material being welded; and a solid-phase spot-welding device that can be used suitably in this solid-phase spot-welding method. This solid-phase welding method involves overlapping metal plate materials and carrying out spot-welding, and is characterized by having a welding preparation step in which two or more metal plate materials are held in a state in which same overlap one another, thereby forming an interface to be welded, a temperature-raising step in which a pair of electrodes are used and the interface to be welded is heated by supplying a current by a direct method, an indirect method, or a series method, thereby forming a softened region in the vicinity of the interface to be welded, and a stress application step in which an external stress greater than or equal to the yield strength of the metal plate materials at a desired welding temperature is applied to the softened region, wherein the metal plate materials are welded to each other by subjecting the softened region to local deformation.

Resistance spot rivet welding systems, subsystems, and methods of use thereof are provided.

A spot welding electrode and a method of using the electrode to resistance spot weld a workpiece stack-up that includes an aluminum workpiece and an adjacent overlapping steel workpiece are disclosed. The spot welding electrode includes a weld face having a multistep conical geometry that includes a series of steps centered on a weld face axis. The series of steps comprises an innermost first step in the form of a central plateau and, additionally, one or more annular steps that surround the central plateau and cascade radially outwardly from the central plateau towards an outer perimeter of the weld face. The weld face has a conical cross-sectional profile in which a periphery of a top plateau surface of the central plateau and a periphery of a top annular step surface of each of the one or more annular steps are contained within a conical sectional area.

A resistance spot welding system can join two polymeric workpieces and includes a power supply. The power supply has a positive terminal and a negative terminal. The resistance spot welding system further includes a welding electrode assembly electrically connected to the power supply. The welding electrode assembly includes a housing, a first electrically conductive pin and a second electrically conductive pin. The first and second electrically conductive pins both protrude from the housing. The first electrically conductive pin is electrically connected to the positive terminal of the power supply, and the second electrically conductive pin is electrically connected to the negative terminal of the power supply. The second electrically conductive material is electrically insulated from the first electrically conductive pin. The first and second electrically conductive pins are at least partly made of a material having a hardness ranging between 50 HRC and 70 HRC.

A projection welding gun device includes an upper welding tip and a lower welding tip that are combined with a gun body through a shank, where the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels, and a rotation unit that is rotated by a driving portion is disposed between the gun body and the shank to rotate the shank.

An electrostatic energy storage welding machine for performing resistance welding while applying pressure to an object to be welded includes: a pair of welding electrodes; an energy storage section including a plurality of energy storage parts; an individual charge circuit for individually charging respective energy storage parts; an individual discharge circuit for individually discharging the respective energy storage parts; a voltage monitor circuit individually monitoring voltages of the respective energy storage parts; an individual voltage stabilization control section for performing control to further charge an energy storage part having deviation in performance in an individual manner to stabilize a voltage of that energy storage part and thereby achieve a set voltage; and an output circuit for outputting power produced by the set voltage stabilized through individual charging and electric current through individual discharging in the energy storage section to apply the electric current between the welding electrodes.