PLANET MECHANISM FOR WIRE FEEDING

1. Planetary wire feeding device with a housing (1) consisting of two like elements (2, 3) contacting one another and which are releasably connected with one another, at least one assembly arranged in the coaxial semicylindrical recesses (8, 9, 10) formed in the elements (2, 3) and two drive rollers (23, 24) supported rotatably about a respective bearing shaft (26) in the associated assembly, which drive rollers (23, 24) have a hyperbolic profile and are respectively pressed by a plate spring assembly (28) in the direction of the common axis of the elements (2, 3), with the bearing shafts (26) being disposed at an angle (2 alpha) to one another and cutting at right angles the common axis of the recesses (8, 9, 10) which lies in the contacting plane of the elements and with the common axis of the elements being the bisector of the angle (2 alpha) between the bearing shafts (26), characterised in that, the elements of the housing (1) are a left cylinder (2) and a right cylinder (3) in each of which a cylindrical projection (12) coaxially thereto is provided in whose front portion are formed a centering conical recess (13), a screw positioning passage (14) and a central opening (15), cup receiving recesses (8), spring receiving recesses (10) and bushing receiving recesses (9) are formed coaxially and semicylindrically in the cylinders (2, 3), common axes thereof lie in the contact plane of the cylinder (2, 3) at right angles to the longitudinal axis of the cylinder (2, 3) and in which two like assemblies, a left assembly (16) and a right assembly (17) are attached each of which consists of a supporting-alignment element (18) which is formed as cylindrical cup whose base has an opening (20) and which has on the inside a planar surface (21) and on the outside a cylindrical surface (22), the drive rollers (23, 24) are secured to the ends of the corresponding support alignment element (18) on a support axle (25) in which the bearing shafts (26) are arranged, support bushings (27) are arranged at the end of the two supporting alignment elements (18), which bushings together with the plate spring assembly (28) arranged in the corresponding spring receiving recesses (10) press the left assembly (16) and the right assembly (17) respectively onto the cylindrical projections (12), the side surfaces (29) of the supporting alignment elements (18) have respectively two quarter cylindrical sections in which a forward half opening (30) or a rear half opening (31) coaxial to