The present invention relates to a resistance welding system for nut control; the resistance welding system uses a resistance welding method in the process of welding nuts to metal sheets; detects the situations of the parameters are in or out of tolerance values that the parameter can be nut lengths, nut inner diameter differences and acceptability of welding seam riser heights, by makes control them at the welding process and gives warning according to situation; enables automatic control to different types of nuts on a component in processes where multiple nuts are welded onto one component by maintaining a recipeable and sequential welding process via calling registered welding properties for the corresponding nut; it also relates to a resistance welding nut control system that prevents the operator from taking the wrong nut and loading it into the machine.

A current source module for joining methods with current-generated heat support that includes a base body formed monolithically as a single component, having a first immovable attachment element for connecting a first joining tool and at least one formed first receiving space. In the first receiving space, a control element is disposed including a linearly movable second attachment element for connecting to a second joining tool, and in the first or additional receiving space a transformer unit for electrical supply is disposed. Furthermore, a welding gun is provided that includes such current source module, and a first joining tool formed as an immovable electrode arm, and a second joining tool formed as a movable electrode arm, wherein the immovable arm is connected to the first attachment element and the movable arm is connected to the second linearly movable attachment element, wherein the electrode arms include electrodes connected to the transformer.

A cooling device includes a refrigerant circulation channel, and a pump configured to pump refrigerant in the refrigerant circulation channel A heat generating part of an articulated robot includes a heat generating part of an end effector, and a part of the refrigerant circulation channel is formed as a first heat exchanging part configured to exchange heat between the heat generating part of the end effector and the refrigerant, and another part of the refrigerant circulation channel is formed as a radiator. The radiator is a passive radiator, and is attached in an exposed state to a part of the surface of an arm, configured to move in a space when a joint of the arm is driven.

An electrode device for water-cooling type resistance welding that constantly circulates cooling water efficiently to the proximity of an electrode tip, allowing the electrode to stably cool down. A cooling pipe 11 is inserted inside a device body 1 from a lower side thereof, and cooling water ejected from a tip opening 11a of the cooling pipe 11 cools a cap tip 10 placed on the tip of a shank 8. The cooling pipe 11 is movable in the axial direction of the device body 1 and fixable at any position. As a result, even with a change in the length of the shank 8, the tip opening 11a of the cooling pipe 11 can always be positioned in the proximity of the cap tip 10, allowing the cap tip 10 to cool down reliably and the form of the electrode tip to be maintained stably for a long time.

A bonding probe is used for bonding a cover sheet to a core to form or repair a dual wall structure. The bonding probe includes a body, an attachment end at a distal end of the body, a head at an opposite end of the body, a tip extending from the head, and a cooling passageway. The attachment end couples the body to a resistance welder. The tip extends to form a proximate end of the body. The tip includes a contacting area having a predetermined three dimensional contoured surface. The contacting area aligns with a predetermined area of a three dimensional outer surface of a cover sheet of a dual walled structure. The cooling passageway provides a passageway for a flow of cooling fluid. The cooling passageway extends through the head, and into the tip.

The present invention relates to a device for blocking cooling water of a weld gun, the device preventing water leakage by blocking the cooling water leaking from the weld gun when a tip provided to the weld gun is replaced. The device for blocking the cooling water of the weld gun comprises: a first piston valve (23) connected to a first solenoid valve (17), operated by a signal of a control unit, so as to start operation according to a signal thereof, and receiving the cooling water from a cooling water inlet end; a main supply pipeline (23) of which one side is connected to a cooling water inlet pipe (27) of the weld gun and the other side is connected to an outlet end of the first piston valve (23); a second piston valve (29) operated by a first solenoid valve (15), and provided on a main discharge pipeline (31) so as to cut off the cooling water discharged or allow the same to pass therethrough; a suction means (35) for suctioning the cooling water filled in the pipeline by means of vacuum and holding the same when the weld gun tip is removed such that the pipeline is opened; and a pressure sensor (49) for sensing that the weld gun tip is separated and the pressure of the pipeline instantly drops so as to drive a circuit, thereby sensing an instant change in fluid pressure; and a cleaning means (47) for removing scales and foreign substances accumulated inside the weld gun, using spraying of air pressure.

An apparatus includes a welding electrode and a holder with a primary electrical connection for carrying a welding current. The electrode and the holder may separate easily due to a weak interference fit of the primary electrical connection. Bare hands may provide sufficient force for separation. The electrode and the holder may be configured for self-alignment. A quick-release mechanism may prevent unintentional dislodgement of the electrode from the holder and include a rotation-resistant device for preventing electrode rotation. A secondary electrical connection may be included to supplement or replace the primary electrical connection. A workpiece clamping force, traditionally intended for clamping the electrode to a workpiece, may also be utilized to enable the secondary electrical connection.

A first electrode coolant path is configured to cool a first welding electrode by liquid coolant flowing from a supply path through the first electrode coolant path to a return path. A second electrode coolant path is configured to cool a second welding electrode by liquid coolant flowing from the supply path through the second electrode coolant path to the return path. Three or more valves are configured to stop or reduce liquid coolant flow through the first or second electrode coolant path and configured to stop or reduce liquid coolant backflow from the return path when the first or second welding electrode is at least partially detached. At least one valve is coupled in the first or second electrode coolant path. A drawback apparatus generates a suction force to draw liquid coolant away from a gap formed when the first or second welding electrode is at least partially detached.

An electrode cap and adapter assembly includes a cap having a useful life line inscribed thereon. The cap may be either a circumferentially configured internally finned cap or a self-dressing internally finned cap. The male/female adapter is used to mount a female cap to a male shank.

A first electrode coolant path is configured to cool a first welding electrode by liquid coolant flowing from a supply path through the first electrode coolant path to a return path. A second electrode coolant path is configured to cool a second welding electrode by liquid coolant flowing from the supply path through the second electrode coolant path to the return path. Three or more valves are configured to stop or reduce liquid coolant flow through the first or second electrode coolant path and configured to stop or reduce liquid coolant backflow from the return path when the first or second welding electrode is at least partially detached. At least one valve is coupled in the first or second electrode coolant path. A drawback apparatus generates a suction force to draw liquid coolant away from a gap formed when the first or second welding electrode is at least partially detached.