| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219081000 | Roller electrode | 12 |
| 20110000892 | METHOD AND WELDING DEVICE FOR THE EVALUATION OF THE WELDING CURRENT INTENSITY DURING THE WELDING OF CONTAINER BODIES - In order to evaluate the welding current for the resistance seam welding of an overlap seam of container bodies, a welding with changing welding current intensity is carried out for a container body of the production series, resulting in a changing welding of the seam, ranging from the welding with a too high temperature to the welding with a too low temperature. The electric energy for this welding is determined several times during this welding and/or the temperature of the weld seam is determined several times and the welding current intensity is determined at which the welding of the individual container body is too cold and the welding current intensity at which the welding is too hot. This determination is based on the determined electric energy values and/or on the determined temperature values and based on this determination a preferred range for the welding current intensity within these limits of too hot and too cold is determined. By this, an evaluation if the welding current intensity is correct may take place in a simple way during the production. After the welding of the individual container bodies a changed welding current intensity lying between the welding current intensity of the too hot and of the too cold welding may optionally be set and used for the following series of container bodies of the production series. | 01-06-2011 |
| 219082000 | Roller moves over work | 3 |
| 20140061168 | SEAM WELDING ROBOT - A seam welding robot includes a robot arm and a welding unit that is coupled to the robot arm. The welding unit includes a pair of roller electrodes. The pair of roller electrodes rotates following motion of the robot arm while sandwiching and pressurizing welding targets. The welding unit passes a welding electric current between the pair of roller electrodes to seam-weld the welding targets. | 03-06-2014 |
| 20150298244 | SEAM WELDING SYSTEM, SEAM WELDING METHOD, AND METHOD FOR PRODUCING A TO-BE-WELDED OBJECT - A seam welding system includes a pair of roller electrodes. The pair of roller electrodes hold a to-be-welded object between circumferential surfaces of the roller electrodes, rotate while holding the to-be-welded object between the circumferential surfaces, and perform seam welding on the to-be-welded object when a current flows between the roller electrodes while rotating and holding the to-be-welded object between the circumferential surfaces. To an electrode movement mechanism, the roller electrodes are mounted. The electrode movement mechanism moves the roller electrodes along a welding line of the to-be-welded object. Drive sources respectively rotate the roller electrodes and a joint of the electrode movement mechanism. A controller controls an amount by which the roller electrodes rotate based on a torque change in the drive sources so as to keep torques respectively acting on the roller electrodes within a predetermined range. | 10-22-2015 |
| 20150367441 | SEAM-WELDING METHOD AND SYSTEM - Distance to the upper face of workpieces W sandwiched between electrode rollers | 12-24-2015 |
| 219083000 | Methods | 7 |
| 20090120913 | System for and Method of Producing Invisible Projection Welds - A system for and method of producing invisible welds for a plurality of workpieces, includes the steps of selecting a free-body projection, fixedly securing the projection intermediate the workpieces, and engaging the workpieces with a resistance welding apparatus such that the projection fuses to form the weld joint, and preferably, further includes autonomously securing the projection and an encircling portion of an adhesive tape intermediate the workpieces utilizing a roll dispenser, so as further cause to form an adhesive seal around the weld, and engaging the workpieces with modified electrodes having enlarged workpiece engaging faces over optimized weld force only application and weld force plus electric current application periods. | 05-14-2009 |
| 20110163074 | METAL PLATE JOINING METHOD AND APPARATUS - A pair of upper and lower pressure rollers | 07-07-2011 |
| 20110233173 | SEAM WELDING METHOD AND MACHINE THEREFOR - A seam welding machine includes a first roller electrode and a second roller electrode that hold a layered body formed by layering a plurality of workpieces. The first roller electrode is in contact with a thinnest workpiece, which is disposed on an outermost side of the layered body. The seam welding machine has a current-branching electrode held in contact with the thinnest workpiece, and which is charged with a polarity opposite to that of the first roller electrode. Accordingly, when an electric current is applied between the first roller electrode and the second roller electrode that hold the layered body, a branch electric current is applied from the first roller electrode to the current-branching electrode, or a branch electric current is applied from the current-branching electrode to the first roller electrode. | 09-29-2011 |
| 20150129561 | ROLLER HEAD FOR A RESISTANCE WELDING MACHINE - With a roller head ( | 05-14-2015 |
| 20150367440 | METHOD AND DEVICE FOR ROLL SEAM WELDING CONTAINER FRAMES - The invention relates to the roll seam welding of container frames wherein a first welding procedure is carried out using welding rolls ( | 12-24-2015 |
| 20160045975 | SEAM WELDING METHOD AND SYSTEM - Shifts of a reference point C in a robot coordinate system among three postures of a seam welding apparatus | 02-18-2016 |
| 20160136751 | SEAM WELDING METHOD AND VEHICLE BODY - In a seam welding method, a pressing force applied to workpiece by roller electrodes is reduced and an energization to the roller electrodes is stopped when the roller electrodes pass at least a portion where metal sheets are temporarily fastened together through spot welding, and the pressing force to the workpiece by the roller electrodes and the energization to the roller electrodes are restored after the roller electrodes have passed the spot welded portion. | 05-19-2016 |
| 219084000 | Electrode structure | 1 |
| 20120273469 | Planetary Resistance Welding Device And Methods Therefor - Devices and methods are contemplated in which a first electrode is circumferentially movable about a second electrode such that a tubular work piece can be resistance welded to a second work piece. Most preferably, the first electrode is a wheel-shaped electrode, while the second electrode is static and disk-shaped. | 11-01-2012 |
