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US 4,261,499 AGranted
Planetary wire-feeding device
AssigneeCUV "Progress"
InventorsDavid A. Samokovliski, Alfred E. Nemecheck, Emil A. Maximov, Peter D. Petrov, Ivan I. Ivanov
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AssigneeCUV "Progress"
InventorsDavid A. Samokovliski, Alfred E. Nemecheck, Emil A. Maximov, Peter D. Petrov, Ivan I. Ivanov
Estimating the term…
A planetary device for feeding electrode wiring in welding operations is provided with a housing through which the wire is fed, the central portion of the housing being shaped as a flange with a hub, and the front side thereof being provided with seats housing pistons bearing radially adjustable wire-feeding rollers. The piston heads are in constant contact with the shorter arms of bow-type double-armed levers hingedly affixed to the flange portion of the hub and located perpendicularly to the axis of the electrode wire fed through the housing. The longer arms of the levers contact the surfaces of a cam supported in the hub of the housing for rotation with respect thereto. A torque spring in the form of an Archimedes spiral, disposed between the flange of the housing and the cam, and having its respective inner and outer ends affixed to such members, constantly urges the cam with respect to the housing in such direction as to urge the rollers inwardly into engagement with the electrode wire. Wire is initially fed into the device with the device at rest and with the canted wire-feeding rollers forced apart against the opposition of the spring. The rollers are now brought into engagement with the wire, and the feeding of the wire by the device is started by driving the housing to rotate the canted rollers around the wire and thus to feed the wire forwardly.
A planetary device adapted for feeding electrode wire in welding, said device comprising a housing rotatable about an axis, the central portion of the housing being shaped as a flange with a hub, seats on one side of the flange, said seats housing pistons bearing radially moving canted rollers which feed the wire along the axis of the housing as the housing rotates, bow-type double-arm levers hingedly affixed to the flange portion of the hub and symmetrically disposed in a plane perpendicular to the axis of rotation of the housing, said levers each having a long and a short arm, a cam rotatably mounted on the hub of the housing, said cam having two symmetrically disposed cam surfaces engaging the outer ends of the respective longer arms of the levers, a spiral torque spring located between the flange and the cam, the opposite ends of the spring being affixed respectively to the housing and to the cam, said spring acting to maintain the outer end of the shorter arms of the levers in constant engagement with the heads of the pistons, whereby to maintain the canted rollers in effective, wire-feeding contact with the electrode wire.
Dependencies are inferred from the claim text.