The present invention provides a low-voltage high-current light-weight spot welding machine, comprising: a welding power supply device, wherein the welding power supply device comprises a casing, a first electrode and a second electrode; a movable arm assembly, comprising a movable arm and at least one nut flange, wherein an end of the movable arm is connected with the at least one nut flange; at least one connection block, provided in between the first conductivity block and the first electrode; a drive assembly, wherein a drive rod of the drive assembly is connected with the at least one nut flange, the drive rod is located at a bottom portion of the casing; a static arm, wherein the static arm is connected with the second electrode via a second conductivity bridge, and the lateral connection plates are rotatably connected at the at least one flange structure; wherein, by connecting the movable arm assembly, the at least one connection block, the drive assembly and the static arm with the lateral connection plates, a bearing connection mechanism of the welding tong of a spot welding machine is formed and the bearing connection mechanism is integrally connected with the welding power supply device. In the present invention, the structural design of the movable arm and the static arm is tight, the welding tongs are designed to be small-sized, detachment between the welding tongs and the welding power supply devices can be done easily and rapid swift of the two kinds of welding tongs can be realized.

A cap extractor for a welding gun includes a housing, a pair of springs, and first and second arms that are arranged between the springs. Each of the first and second arms have teeth that are configured to engage a welding cap. The first and second arms are configured to move relative to the housing in first and second directions that are transverse to one another by deflecting the springs.

There is provided a resistance spot welding apparatus including a first rod-shaped electrode body, second rod-shaped electrode body, first ring-shaped member, second ring-shaped member, first elastic body, and second elastic body. The first rod-shaped electrode body and second rod-shaped electrode body are arranged facing each other, the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member, the first elastic body is connected to an opposite side of first ring-shaped member to second rod-shaped electrode body side, the first rod-shaped electrode body and first ring-shaped member are not electrically connected to each other, the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member, the second elastic body is connected to an opposite side of second ring-shaped member to first rod-shaped electrode body side, and the second rod-shaped electrode body and second ring-shaped member are not electrically connected each other.

There is provided a resistance spot welding apparatus including a first rod-shaped electrode body, second rod-shaped electrode body, first ring-shaped member, second ring-shaped member, first elastic body, and second elastic body. The first rod-shaped electrode body and second rod-shaped electrode body are arranged facing each other, the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member, the first elastic body is connected to an opposite side of first ring-shaped member to second rod-shaped electrode body side, the first rod-shaped electrode body and first ring-shaped member are not electrically connected to each other, the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member, the second elastic body is connected to an opposite side of second ring-shaped member to first rod-shaped electrode body side, and the second rod-shaped electrode body and second ring-shaped member are not electrically connected each other.

A joining apparatus for panel sheets and a joining method for panel sheets using the same are provided. The joining apparatus includes an element punching device which stores and supplies elements according to a specification of a panel sheet and inserts the element into a first panel sheet among different types of panel sheets. Additionally, a welding device resistively welds a part of the first panel sheet into which the element is inserted by the element punching device.

A welded assembly and a method of reaction metallurgical welding are disclosed. The assembly includes a first metallic workpiece and a second metallic workpiece attached together by at least two overlapping weld joints. The overlapping weld joints are reaction metallurgically joined (RMJ) weld joints, and each overlapping weld joint overlaps with the other overlapping weld joint by 10-75%. The method of welding includes providing a reactive material between and in contact with the first and second workpieces. In a first position, the workpieces and the reactive material are pressed together, heated, and held between first and second tools to form a first RMJ weld joint between the workpieces. Then, in a second position, the workpieces are pressed together, heated, and held between the tools to form a second RMJ weld joint that overlaps with the first RMJ weld joint.

An electromagnetic levitation force type propulsion device includes an integrated electromagnet structure, an auxiliary propulsion structure and a power supply control structure. The integrated electromagnet structure includes a mounting frame, a propulsion outputting shaft capable of moving back and forth relative to the mounting frame and extending out of the mounting frame, and two electromagnets opposite to each other. One of the electromagnets is assembled to the mounting frame to form a stationary electromagnet and the other electromagnet is fastened to the propulsion outputting shaft to form a movable electromagnet. The movable electromagnet is provided at the other side of the mounting frame and can move back and forth relative to the stationary electromagnet. The auxiliary propulsion structure drives the movable electromagnet back and forth relative to the stationary electromagnet. The power supply control structure provides a power supply for the integrated electromagnet structure and/or the auxiliary propulsion structure.

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 building construction welding apparatus is provided including a rover vehicle having at least one movable arm configured to provide spot welding functionality, the rover vehicle comprising rover drive hardware configured to transport the rover vehicle over an upper corrugated sheet of metal, a crawler configured to travel under a lower corrugated sheet of metal beneath the upper corrugated sheet of metal, the crawler provided with crawler drive hardware and a movable electrode configured to be positioned at a lower position desired weld point, and a central power/data unit connected to the rover vehicle and crawler. The rover vehicle is configured to position one movable arm above the upper corrugated sheet of metal at an upper position desired weld point corresponding to the lower position desired weld point and effectuate a welding function.

Systems and methods are provided for exchanging electrode tips, e.g., electrode tips used in resistance spot welding, and disposing of used/unusable electrode tips. Used/unusable electrode tips may be collected, e.g., while within an assembly line. Such used/unusable electrode tips may be routed to a receptacle(s) reside outside the assembly line. Accordingly, disposing or removing of the used/unusable electrode tips can be accomplished without stopping the assembly line, and decreasing any chance for safety events.