Arc ignition device
AssigneeDonggen Zhou
InventorYingchun Liu
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Abstract
An arc ignition device of a plasma welding gun includes an igniter and a fixture. The igniter includes an arc ignition block (5), a spring (6) and a tungsten needle (3), and the fixture includes a fastening member (4), a tungsten needle clamp (7), a base (2) and a magnet (1). The arc ignition block and the tungsten needle are conductors. And the tungsten needle is clamped by the fixture with the fastening member cooperated with an arc surface of the tungsten needle clamp. Additionally, the magnet is embedded in the base, by means of which the arc ignition device can be attached to any position. Through the precise relative motion of the spring, the arc ignition device implements a high-requirement arc ignition function.
Claims7
An arc ignition device, comprising an igniter and a fixture, the igniter comprising an arc ignition block, a spring and a tungsten needle, wherein the tungsten needle and the arc ignition block are electrical conductors, the arc ignition block is movable up and down along an outer surface of the tungsten needle by means of the spring, and the tungsten needle is contacted with a cathode terminal of a nozzle of a welding gun when the arc ignition block is moved downward to ignite an arc.
Dependencies are inferred from the claim text.