Abstract: The invention relates to spot welding tongs with tong compensation, including a tong base body (4), two tong arms (6, 7) and a compensation unit (17) movably connecting one of the tong arms (6, 7) with the tong base body (4) and designed to convert a rotational movement into a linear movement, wherein the compensation unit (17) is composed of a drive unit (18) and a connector element (19), and the connector element (19) is eccentrically and movably fastened to an eccentric disc (23) fastened to the drive unit (18). In order to provide such spot welding tongs (1) with a compensation unit, which converts the rational movement into a linear movement, the connector element (19) is designed to be curved in an end region.

Abstract: The invention relates to spot welding tongs with tong compensation, including a tong base body (4), two tong arms (6, 7) and a compensation unit (17) movably connecting one of the tong arms (6, 7) with the tong base body (4) and designed to convert a rotational movement into a linear movement, wherein the compensation unit (17) is composed of a drive unit (18) and a connector element (19), and the connector element (19) is eccentrically and movably fastened to an eccentric disc (23) fastened to the drive unit (18). In order to provide such spot welding tongs (1) with a compensation unit, which converts the rational movement into a linear movement, the connector element (19) is designed to be curved in an end region.

Abstract: The invention relates to a wire advancing device for conveying a wire, particularly a welding rod, from a wire supply to a useful point with the aid of conveying means. The wire advancing device comprises a mechanism for adjusting the contact pressure applied to the welding rod by the conveying means. In order to create a wire advancing device which is provided with little slip and can be used for welding rods that have a different diameter and are made of different material, the adjusting mechanism encompasses at least one elastically or plastically deformable pressing means which acts upon the conveying means and is connected to a supply unit. The pressing means is filled with a gaseous or liquid medium via the supply unit in order to adjust the contact pressure applied to the welding rod by the conveying means.

Abstract: The invention relates to a rod transporting device for transporting a welding rod (13) from a rod supply to a point of consumption, and to a method for transporting a welding rod (13). The aim of the invention is to provide a device or a method of the aforementioned kind which can be produced at low costs and carried out easily, respectively, and which allow for a reverse movement of the rod can at rapid reaction times and for an automatic adaptation to welding rods (13) having different diameters. For this purpose, at least one transport element (33) is linked with a drive (37) and at least one additional transport element (33) with the welding rod (13) in a non-positive and/or positive manner, and at least one element (28) for adaptation to the diameter of the welding rod is mounted so as to be displaceable. The transport elements are preferably configured as balls and the drive is a drive sleeve in which the elements are centered and engage with a threaded section of the drive sleeve.