Class / Patent application number | Description | Number of patent applications / Date published |
219860250 | With significant electrode support | 51 |
20090071943 | UNIVERSAL WELD GUN CONFIGURATION - A weld gun in which the first weld arm is fixedly but removably connected to the weld gun body and the second weld arm includes a first arm segment, pivotally mounted at one end thereof on the gun body and pivotally connected at another end thereof to the gun actuator, and a second arm segment fixedly but removably connected atone end thereof to an intermediate portion of the first arm segment. Conversion of the gun from an X axis configuration to a Y axis configuration is achieved by removing the second arm segment from the first arm segment, removing the first weld arm from the body, rotating the second arm segment and the first weld arm through 90°, attaching the first arm to the first arm segment, and connecting the second arm segment to the body. | 03-19-2009 |
20090114624 | Support structure for welding backbar - The present invention concerns a structure for supporting a welding backbar ( | 05-07-2009 |
20090218323 | Spot welding method, method for judging shape of nugget, spot welding machine and spot welding electrode - An electrode whose electrode surface is a substantially convex curved surface and which has at a center portion a recess set at a predetermined depth allowing a welding trace formed on a metal body surface to reach a deepest portion when a nugget is formed in a satisfactory manner by the spot welding is used as at least an electrode for performing the spot welding. The spot welding quality is judged based on a shape of the welding trace formed on the metal body surface by the spot welding in correspondence with the recess. | 09-03-2009 |
20100147806 | ELECTRODE TIP MAGAZINE FOR SPOT WELDER - An electrode tip magazine for a spot welder that does not interfere with the welding gun is provided. The magazine includes a magazine body formed with a storage part slidably aligning and storing a plurality of electrode tips therein, one end of this storage part serving as an externally opened supply port, a push-out member disposed to be freely slidable between both ends inside the storage part, a pulley disposed at a position adjacent to the supply port of the magazine body, a spiral spring disposed at a position at the other end of the storage part of the magazine body, and a wire connecting a distal end of the spiral spring and the push-out member with an intermediate portion thereof being wound around the pulley so as to always pull the push-out member toward the supply port by a biasing force of the spiral spring. | 06-17-2010 |
20100270271 | METHOD AND DEVICE TO CONTROL A POSITIONING DEVICE FOR WELDING - In a method and device to control a positioning device, in particular a welding robot, for welding with an electrode holder and at least one force detection device to detect reaction forces at the electrode holder, a sum of reaction forces on the electrode holder; and the pose of the positioning device is regulated on the basis of the determined sum of reaction forces. | 10-28-2010 |
20110073571 | Spot welding gun for resistance welding of workpieces - A spot welding gun for resistance welding of workpieces, includes a base body and a bracket, in which electrode holders are arranged, the electrodes being in turn arranged in the holders. At least one electrode holder is fixed to an actuator that enables the electrode holder fixed thereto with the electrode to be displaced in longitudinal direction towards other electrodes. To protect the electrodes, a winding device with a band is arranged, the band being displaceably arranged between the contact surface of the electrode and the workpiece opposite the electrode. The winding device assigned to the displaceable electrode is connected to the displaceable electrode so that it moves at the same time as the electrode when the electrode is moved in longitudinal direction. The electrode holders and the electrodes have devices for guiding the band from the winding device axially along the electrode holders towards the electrode and vice versa. | 03-31-2011 |
20110120978 | SPOT WELDING SYSTEM - A spot welding system including a spot welding gun having a pair of electrodes disposed opposite to each other, and a servo motor for allowing the pair of electrodes to approach each other and separate from each other; a robot for movably holding either a spot welding gun or a workpiece so that a workpiece is disposed between the pair of electrodes of the spot welding gun; a physical quantity detection section for detecting a physical quantity correlative to torque or velocity of the servo motor; a position detection section for detecting positions of the pair of electrodes; a mode switching section for switching, by a switching command, an operation mode of the spot welding system between a spot welding mode for spot-welding the workpiece and a position correction mode for correcting a spot welding position of the workpiece; and a processing section for performing a spot welding process in the spot welding mode and a position correction process in the position correction mode. | 05-26-2011 |
20110155699 | ENCODER DAMPENING MECHANISM - An encoder dampening mechanism is provided that absorbs shock acting on an encoder having a peripheral shape that is a flat shape, and prevents failure of the encoder. In an encoder dampening mechanism for an electric spot welding gun ( | 06-30-2011 |
20110240606 | SPIKE RESISTANCE SPOT WELDING SYSTEM AND METHOD - A system and method for performing one-sided resistance spot welding on parts to be welded. The system uses a resistance spot welding device that transfers electric welding current through a consumable welding spike to a localized spot on the parts to be welded. The welding spike is pressed against one side of the parts to be welded by a weld electrode during the spot welding process. The consumable welding spike is preferably melted and absorbed into the melt pool produced by the electric welding current. | 10-06-2011 |
20130306603 | Electric Spot Welding Head For A Multi-Axis Industrial Robot, and Robot Comprising This Head - An electric spot welding head for a multi-axis industrial robot that has a compact configuration, particularly in a longitudinal direction that goes from the end of the head for the attachment to the robot wrist towards the welding electrodes. This result is achieved primarily by the fact that the electrical transformer mounted on the head has its output connected to the electrode-holding arms arranged, respectively, on a front wall of the body of the transformer and on an end wall of the body of the transformer, for the connection to the electrode-holding arms of the head. The structure of the welding head is completely covered by a casing having a rear opening for connection to the robot wrist and a front opening from which the electrode arms of the welding head protrude. | 11-21-2013 |
20150321283 | TIP DRESSING SYSTEM WITH DRESSING DEVICE FOR CUTTING ELECTRODE TIPS OF SPOT WELDING GUN - In a tip dressing system having a welding gun, a dressing device, and a control device, the control device comprises a detection part which detects an increment amount of a load applied to a servo motor of the dressing device, a judgment part which judges if the increment amount of the load reaches a predetermined threshold value, an acquisition part which acquires a position of a movable electrode which is measured by an encoder of a servo motor for driving cutting blades of the dressing device, and a calculation part which calculates the cutting amount of the electrode tips based on the distance covered by the movable electrode moves when it is moved toward the counter electrode from the position where the increment amount of the load reaches the threshold value. | 11-12-2015 |
20160158872 | WELDING DEVICE AND METHOD FOR WELDING VEHICLE PART USING THE SAME - A welding device of a robot arm includes a welding machine having a first pressing member which includes a cylindrical first pressing part and a second pressing member which includes a second pressing part inserted into a hollow of the first pressing part. A transformer supplies a positive (+) current to the first pressing member and a negative (−) current to the second pressing member. The first and second pressing parts have the same co-axis. | 06-09-2016 |
219860310 | Having cooling means | 6 |
20140374388 | REMOVABLE WELDING TIP ASSEMBLY - A dummy weld apparatus including a dummy weld gun which allows a direct weld robot with a conventional weld gun to clamp down on the dummy weld gun to apply force and weld current for performing welding of workpieces of a first composition (e.g., aluminum). This arrangement allows the current provided by the conventional weld gun to flow through the dummy weld gun for welding the workpieces using weld tips dedicated to welding parts of the first composition, but also allows the dummy weld gun to be removed from the conventional weld gun to allow the conventional weld gun to performing welding operations on workpieces of a second composition (e.g., steel) using the original welding tips of the weld gun, avoiding material contamination of the tips. | 12-25-2014 |
20150060414 | Welding Device for Welding a Connecting Portion and Method for Welding the Connecting Portion with the Welding Assembly - A welding device for welding a thicker sheet and a thinner sheet arranged congruently together. A first welding electrode having a first heat reflector or welding mirror contacts the thicker sheet with a first contact surface. A second welding electrode having a heat reflector or second welding mirror contacts the thinner sheet with a second contact surface. The first and second contact surfaces | 03-05-2015 |
20150083693 | RESISTANCE SPOT WELDING STEEL AND ALUMINUM WORKPIECES WITH HOT WELDING ELECTRODE AT ALUMINUM WORKPIECE - A method of resistance spot welding a steel workpiece to an aluminum or aluminum alloy workpiece is disclosed. One step of the disclosed method involves providing a workpiece stack-up that includes a steel workpiece and an aluminum workpiece. Another step involves preheating the welding electrode that is meant to contact the aluminum or aluminum alloy workpiece. Yet another step of the disclosed method involves pressing the preheated welding electrode and another welding electrode against opposite sides of the workpiece stack-up, with the preheated welding electrode abutting the aluminum or aluminum alloy workpiece, and passing an electrical current between the two welding electrodes at a weld site to initiate and grow a molten weld pool within the aluminum or aluminum alloy workpiece. | 03-26-2015 |
20160067814 | SPOT WELDING METHOD - A spot welding method is a method of performing spot welding to obtain a spot welded joint, the method including a spot welding with two-stage welding, setting a ratio (I | 03-10-2016 |
20160082543 | SPOT-WELDED JOINT AND SPOT WELDING METHOD - By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates ( | 03-24-2016 |
20160089746 | SPOT WELDING GUN FOR QUENCHING WELDING ZONE AND METHOD OF OPERATION THEREOF - A spot welding gun for quenching a welding zone includes a welding tip configured to contact a metal plate material. A first electrode base is configured to have the first welding tip fixed thereto and apply a current to the first welding tip. A plurality of first cooling nozzles provided in the first electrode base and configured to spray a cooling medium around a contacting part of the welding tip. The contacting part contacts the metal plate material. A method of operation of a spot welding gun for quenching a welding zone is also disclosed. | 03-31-2016 |
219860320 | Having magnetic force actuated electrode | 1 |
20160144449 | INDIRECT SPOT WELDING METHOD - This indirect spot welding is for welding members including at least two overlapping steel sheets that have a ferrite phase as a main phase by holding a welding electrode ( | 05-26-2016 |
219860330 | Having adjustment means | 22 |
20080237198 | SPIKE RESISTANCE SPOT WELDING SYSTEM AND METHOD - A system and method for performing one-sided spot welding on parts to be welded. The system uses a spot welding device that transfers electric welding current through a consumable welding spike to a localized spot on the parts to be welded. The welding spike is pressed against a surface of the parts to be welded by a weld electrode during the spot welding process. The consumable welding spike is preferably melted and absorbed into the melt pool produced by the electric welding current. | 10-02-2008 |
20080272091 | Electric driving unit for X-type gun - There is provided an electric driving unit for X-type gun made up by combining a pressure application driving body with a motor, wherein the electric driving unit is attached to a fixed arm or a gun bracket utilizing a housing of the motor, thereby obtaining the electric driving unit for X-type gun capable of rendering the electric driving unit to be compact and held stably, and causing the maintenance thereof to be executed with reliability and ease. The electric driving unit for X-type gun, wherein the pressure application driving body and a motor are combined with each other, comprises: a rotary shaft provided in the motor and formed of a hollow shaft to which a screw shaft is secured; a guide bearing provided at the front end side of the motor for guiding the pressure application shaft; said pressure application shaft having: a part to be driven by the motor and pulled into the motor; a hollow part for containing therein a tip end side of the screw shaft; a nut to be threaded with the screw shaft; and a bearing provided at the front thereof for causing the rear end of the swing arm to be journalled to the pressure application shaft by a pivotal shaft; said electric driving unit for X-type gun still further comprising: a housing provided at the front end of the motor; a bearing provided in the housing for bearing a load applied to the rotary shaft of the motor in the axial direction thereof; and a bearing provided in the housing for causing the housing to be journalled to the fixed arm or causing the housing to be journalled to the gun bracket by a pivotal shaft. | 11-06-2008 |
20130037525 | SPOT WELDING APPARATUS - There is provided a spot welding apparatus. The spot welding apparatus includes a pressing force actuator that causes a movable electrode to move to a pressing force applying position where the movable electrode applies a pressing force to a workpiece together with a fixed electrode, a control pressing force applying actuator that causes a receiving unit to move to a control pressing force applying position where the receiving unit is located adjacent to the fixed electrode and comes into contact with the workpiece so as to apply a control pressing force, and a welding transformer. The control pressing force applying actuator and the welding transformer are linearly aligned at a rear side of the pressing force actuator that is arranged at a front side of a support bracket. | 02-14-2013 |
20130180961 | WELDING DEVICE - A welding device includes a lower tip and an upper tip, as welding tips, and pressuring members. The pressuring members are supported by a support member disposed in the upper tip. The pressuring members are displaced by the action of pressuring member displacement mechanisms and, together with the upper tip, come into contact with a metal plate arranged on the outermost part of a laminated body. | 07-18-2013 |
20150108099 | Multi-Axis Industrial Robot With Integrated Tool - An industrial robot including a robot chain of elements, a robot wrist bearing a tool ( | 04-23-2015 |
20150122782 | JOINING COMPONENTS BY MEANS OF RESISTANCE WELDING - A welding device ( | 05-07-2015 |
219860410 | With condition responsive control means | 8 |
20090084763 | Production or assembly line method of spot welding - The present invention provides a production line method of resistance welding comprising the steps of contacting a metal sheet with an electrode having an initial contact surface area at a force provide a pressure to the metal sheet; applying a current though the electrode to the metal sheet; measuring dimensional changes of the electrode; correlating dimensional changes in the electrode to changes in the initial contact surface area; and adjusting the force to compensate for the changes in the initial contact surface area of the electrode to maintain pressure to the metal sheet. The force may be adjusted by stepping the force to maintain pressure to the flaying surface of the metal sheet to be welded. By maintaining the pressure at the faying surface the life cycle of the electrodes may be increased without forming discrepant welds. | 04-02-2009 |
20090289040 | Method and Device for Measuring Resistance Spot Welding Electrode Tips While Connected to a Robotic Welder - A method and device for measuring a resistance spot welding electrode tip includes a welding electrode tip monitoring device for monitoring a welding electrode tip, the welding electrode tip monitoring device communicatively connected to a robotic welder equipped with electrode welding tips in a manner to be automatically employed as part of a robotic step with the robotic welder and is equipped with a mechanism for generating characteristic data of the welding electrode tips without having to remove the welding tips from the robotic welder. | 11-26-2009 |
20110180516 | POSITION DETECTION DEVICE AND A POSITION DETECTION METHOD FOR A WORKPIECE TO BE WELDED - A position detection device for a workpiece to be welded including a spot welding gun having a pair of electrodes adapted to be disposed opposite each other across the workpiece; a robot for holding either one of the spot welding gun and the workpiece in a manner movable relate to each other; a servo motor for allowing the pair of electrodes to approach the workpiece and separate from the workpiece; a physical quantity detection section for detecting a physical quantity correlative to a torque of the servo motor when the servo motor allows one of the pair of electrodes to approach a surface of the workpiece so that the one of the pair of electrodes abuts against the surface of the workpiece; a position detection section for detecting positions of the pair of electrodes; a storage section for storing the physical quantity detected by the physical quantity detection section and a value detected by the position detection section; and a computation section for calculating a contact start time at which the one of the pair of electrodes comes into contact with the surface of the workpiece based on time-series data of the physical quantity stored in the storage section, and computing a position of the workpiece at the contact start time based on the value detected by the position detection section stored in the storage section. | 07-28-2011 |
20130256278 | ROBOTIC WELD GUN ORIENTATION NORMALIZATION - A method for controlling a welding robot having a servo gun with a movable tip and a fixed tip includes the steps of separately contacting a surface of a part with the movable tip to measure a base test point and an at least two additional test points displaced from the base test point. Two non-collinear vectors are calculated from the at least two additional test points. A normal vector is calculated from the two non-collinear vectors. An angle between the original servo gun orientation and the normal vector is determined. An orientation of the servo gun may be corrected, for example, if the angle is within user specified tolerances. | 10-03-2013 |
219860510 | Responsive to pressure | 4 |
20140054272 | SPOT WELDING APPARATUS - A spot welding apparatus includes a robot, a spot welding gun, and a controller. The spot welding gun includes a gun arm, a fixed electrode, a movable electrode, and a gun-dedicated motor. The fixed electrode is fixed to the gun arm. The movable electrode is disposed on the gun arm at a position opposite a position at which the fixed electrode is disposed. The gun-dedicated motor is configured to move the movable electrode. The controller is configured to output a position command to the gun-dedicated motor so as to control the gun-dedicated motor to move the movable electrode, configured to control the fixed electrode and the movable electrode to hold a to-be-welded object under pressure between the fixed electrode and the movable electrode, and configured to subject the to-be-welded object to spot welding. | 02-27-2014 |
20140183168 | Welding Process for the Welding of Aluminum - A welding process for the welding of aluminium includes a force sensor measuring a force between two welding electrodes on aluminum elements to be welded and transmitting its measured values to a welding control. Until the elapse of a set welding time, the welding control calculates and stores at least one absolute value and/or at least one increase in the measured force. The welding control compares the measured absolute value and/or the increase in the measured force with a reference value and/or a reference curve and calculates a control deviation from the comparison. After the elapse of the set welding time, the welding control subjects the welding electrodes to a constant current during a welding time extension that follows the set welding time, dependent on a magnitude of the control deviation that is measured at the point in time of the elapse and/or during the set welding time. | 07-03-2014 |
20150336201 | SPOT WELDING SYSTEM AND SPOT WELDING METHOD - A spot welding system includes a position detection part which detects the position of a movable arm, a first calculation part which calculates the combined spring constant of the movable arm and a fixed arm based on a position when the movable arm is driven by a predetermined drive force and the drive force, a second calculation part which calculates the spring constant of the movable arm based on a position when the movable arm is driven by a predetermined drive force and the drive force, a third calculation part which calculates the spring constant of the fixed arm based on the combined spring constant and the spring constant of the movable arm, and an elastic displacement calculation part which calculates an amount of elastic displacement of the fixed arm based on the spring constant of the fixed arm and a drive force when welding is performed. | 11-26-2015 |
219860610 | By force balancing | 1 |
20160129525 | SPOT WELDING SYSTEM, METHOD AND COMPUTER PROGRAM CAPABLE OF MAKING PRESSURIZING FORCE APPLIED TO OBJECT TO BE PRESSED TO BE CONSTANT - In a conventional spot welding gun, since pressurizing force due to a movable electrode is measured by a pressure sensor at each of a plurality of attitudes, calibration work is complicated. | 05-12-2016 |
219860700 | For predetermined welding operation | 8 |
20090001056 | POSITIONING METHOD OF SPOT WELDING ROBOT - A positioning method of spot welding robot having: (A) moving a welding gun with a separation between an opposition electrode tip and a movable electrode tip kept open and larger than a preset plate thickness of a work piece so as to position the opposition electrode tip and the movable electrode tip on both sides of the work piece in a plate-thickness direction of the work piece, respectively, and temporarily positioning the opposition electrode tip at a stand-by position; (B) moving the movable electrode tip in a direction approaching toward the opposition electrode tip, monitoring the current value of the servo motor driving the movable electrode tip, and when the current value exceeds a prescribed value, determining that a distal end of the movable electrode tip has been brought into contact with the work piece, stopping a movement of the movable electrode tip and measuring an open separation of two opposing tips between the movable electrode tip and the opposition electrode tip that has been temporarily positioned at the stand-by position; and (C) determining the difference value by subtracting the preset value for the work piece from the open separation of two opposing tips, and moving the opposition electrode tip in the direction approaching toward the movable electrode tip from the stand-by position to the position of a spot welding point to finally position the opposition electrode tip, by using the difference value as the amount of movement of the opposition electrode tip. | 01-01-2009 |
20120000891 | ROBOT SYSTEM - For teaching a welding-point position for a robot, processing of a robot system includes first processing for moving a spot welding gun to a position at which movable and fixed electrodes pinch the welding point; second processing for extending the movable electrode toward a member to be welded by driving of a motor, detecting contact between the movable electrode and the member based on a torque command to the motor, and stopping the movable electrode after the contact is detected; and third processing for operating the robot toward the movable electrode to move the fixed electrode toward the member while maintaining the contact between the movable electrode and the member by the driving of the motor, detecting contact between the fixed electrode and the member based on a disturbance torque acting on a joint of the robot, and stopping the operation of the robot after the contact is detected. | 01-05-2012 |
20140166628 | TWIN SPOT WELDING APPARATUS - A twin spot welding apparatus includes a fixed welder in a fixed frame on a top of which a mounting unit of a robot arm is integrally formed, a guide plate mounted on the fixed frame, an angle control plate movably installed in the guide plate, a servo actuator mounted on the fixed frame to move the angle control plate on the guide plate, and a moving welder formed so that a slope of the moving welder may be controlled by an angle control unit on the angle control plate and formed in a moving frame so that, when the servo actuator and the angle control unit are operated, movement from the fixed welder and the slope of the moving welder are controlled so that a pitch and a slope between welding points of the fixed welder and the moving welder vary. | 06-19-2014 |
20140299583 | SPOT WELDING APPARATUS - A spot welding apparatus may include a fixed welding machine coupled to a fixing frame having a mounting portion mounted on an arm of a robot, a guide plate mounted on the fixing frame, one or more moving welding machines mounted to be selectively and slidingly movable along a longitudinal direction of the guide plate, and an operating unit configured to selectively move the moving welding machine. | 10-09-2014 |
20150102018 | SPOT WELDING APPARATUS - A spot welding apparatus according to is provided that includes an upper and lower moving unit, an upper welding gun, a left and right moving unit and a lower welding gun. In particular, the upper and lower moving unit includes a slide block that is provided at one side of an arm of a robot to move vertically by actuation of an actuator. The upper welding gun is mounted on the slide block and the left and right moving unit is installed at one side of the upper welding gun to horizontally move the upper welding gun by actuation of the actuator. Additionally, the lower welding gun is mounted to correspond to a lower side of the upper welding gun. | 04-16-2015 |
20150136742 | SWITCHING ELECTRODE AND RESISTANCE WELDING DEVICE USING SAME, SPOT WELDING DEVICE AND SPOT WELDING METHOD - The invention provides a switching electrode which has a small variation in resistance value even when a large amount of current is repeatedly cut off and can carry a stable amount of current even when it is continuously used. In the invention, the switching electrode is used in a switch which includes a first switching electrode tip ( | 05-21-2015 |
20160008913 | RESISTANCE SPOT WELDING METHOD | 01-14-2016 |
20160067813 | VEHICLE BODY MANUFACTURING APPARATUS - A vehicle body manufacturing apparatus includes: a jig that holds one work of the vehicle body, positions the one work to the another work, and joins the works together at a joint section; a welding gun that welds a weld portion in the joint section by an electrode that is moved along a pressure axis and pressed against the weld portion; and a welding position fixing member that regulates the pressure axis, along which the electrode is moved, within a setting area, the welding position fixing member being movable in a coaxial direction to the pressure axis along which the electrode is moved, being contactable with the joint section to interpose the joint section between the jig and the welding position fixing member, and having a controllable pressure at a time of welding the weld portion by the electrode, which is moved at the time of welding. | 03-10-2016 |
219860800 | Having interchangeable welding electrodes | 10 |
20090101628 | SPOT WELDING CAP CHANGER - The invention relates to a spot welding cap changer ( | 04-23-2009 |
20120241415 | WELD CAP CHANGING TOOLS - A weld cap changing tool for removing weld caps from weld shanks includes an elongated shaft portion, a first weld cap removing portion that includes two prongs extending away from the shaft portion to free distal ends, the two prongs of the first weld cap removing portion being separated by a first characteristic gap, and a second weld cap removing portion that includes two prongs extending away from the shaft portion to free distal ends, the two prongs of the second weld cap removing portion being separated by a second characteristic gap. When the weld cap changing tool is in a first engagement position, the first weld cap removing portion engages the first weld cap and, and when in a second engagement position different from the first engagement position, the second weld cap removing portion engages the second weld cap of a different size than the first weld cap. | 09-27-2012 |
20140238957 | SPOT WELDING CAP CHANGER - The invention relates to a spot welding cap changer ( | 08-28-2014 |
20140291299 | SPOT WELDING ELECTRODE REMOVAL APPARATUS - A spot welding electrode removal apparatus that is compact and durable is provided. Specifically, the apparatus includes a J-shaped operating lever, and in a position adjacent to the end of the operating lever and facing the contact member, a pressing member is provided. The operating lever is pivotably supported at a portion of the operating lever closer to the end of the operating lever than the pressing member is by a portion of the rotating case adjacent to the side of the contact member. The electrode is placed between the contact member and the pressing member, and a pivotal operation of the operating lever toward the electrode allows the pressing member and the contact member to sandwich the electrode, and a further pivotal operation of the operating lever toward the electrode allows the electrode to rotate together with the rotating case, thereby removing the electrode from a shank end. | 10-02-2014 |
20150053653 | DEVICE FOR CHANGING ELECTRODE CAPS OF A WELDING UNIT AND WELDING METHOD - A device is configured for changing electrode caps of a welding unit. The device includes at least one reserve unit configured to hold in reserve electrode caps which are required for welding with the welding unit. The device also includes a cap changing unit configured to change an electrode cap mounted on a welding tool for another electrode cap held in reserve in the reserve unit. The cap changing unit is configured to arrange the electrode cap demounted from the welding tool in the at least one reserve unit. | 02-26-2015 |
20150090699 | SPOT WELDING APPARATUS - A spot welding apparatus includes: a fixed frame installed in an arm of a robot; an upper welding gun installed in one side of the fixed frame and reciprocating up and down through a pressurization unit; a rotary unit rotatably installed in a lower side of the fixed frame; and a plurality of lower welding guns installed through the rotary unit to correspond to the upper welding gun. | 04-02-2015 |
20150290737 | RESISTANCE SPOT WELDING APPARATUS - A resistance point welding apparatus for fixing a turbulence installation body to an inner wall of a steam generator pipe, having a welding head, which is introduced into the pipe and includes a lance having an electrically conductive material, a point welding electrode, which projects out of the lance in the radial direction, an effective element and an insulation body, which is opposite the point welding electrode in the radial direction and is moved by the effective element, is provided. The lance is tapered at a defined distance from the welding head end such that the insulation body and the point welding electrode press the turbulence installation body against the inner wall of the pipe when the effective element is activated. When a welding stream is impressed on the lance, a point-like welding stream flows via the point welding electrode to a counter electrode arranged outside the pipe. | 10-15-2015 |
20150298246 | SPOT WELDING ELECTRODE HOUSING APPARATUS - Provided is a spot welding electrode housing apparatus having a reduced size such that an operation of mounting electrodes on a welding gun is less likely to affect a line takt time. Specifically, a rotation regulator positioned adjacent to a rotating plate in a direction of a rotation axis is configured to allow the rotating plate to abut against an electrode housed and held in a first recess or a second recess and thereby to regulate a rotation of the rotating plate toward one direction around the rotation axis when the rotating plate rotationally biased by a spiral spring toward the one direction around the rotation axis is allowed to rotate toward the other direction around the rotation axis against a biasing force of the spiral spring. | 10-22-2015 |
20150375333 | SPOT WELDING CAP CHANGER - The invention relates to a spot welding cap changer ( | 12-31-2015 |
20170232546 | ROTARY CHANGER | 08-17-2017 |