초록 ▼

In the context of a plasma cutting torch of the type comprising a torch nozzle whose two electrode holders, which are adapted to be connected with different poles of a power supply and are coaxially arranged to form a flow path for gas for operation of the torch, an insulating ring, preferably made

In the context of a plasma cutting torch of the type comprising a torch nozzle whose two electrode holders, which are adapted to be connected with different poles of a power supply and are coaxially arranged to form a flow path for gas for operation of the torch, an insulating ring, preferably made of ceramic material, is provided to locate the electrode holders in the axial and radial directions. The invention seeks to devise such an arrangement, using simple and low-price means, so that relative motion between the electrode holders and the electrodes is efficiently precluded and in order to achieve this, each of the two electrode holders is provided with ring holding members with axial gripping surfaces which are able to be moved towards each other axially to hold the ring between them, one of the electrode holders being then placed within the ring and the other being placed around it.

대표청구항 ▼

A plasma cutting torch, comprising: first and second electrode holders adapted to be connected with different poles of a power supply; a cutting nozzle defining a nozzle bore; said first and second electrode holders being coaxially arranged to form a flow path for gas to flow to the cutting nozzle b

A plasma cutting torch, comprising: first and second electrode holders adapted to be connected with different poles of a power supply; a cutting nozzle defining a nozzle bore; said first and second electrode holders being coaxially arranged to form a flow path for gas to flow to the cutting nozzle bore; and an insulating ring situated between the first and second electrode holders for locating the first and second electrode holders both axially and radially, wherein: the insulating ring includes axially spaced apart radial faces; and each electrode holder includes a pair of insulating ring holding members having axially spaced apart radial faces which respectively engage the radial faces of the insulating ring, and means for moving the axially spaced apart radial faces of the ring holding member for axially clamping the insulating ring between the pairs of ring holding members, said ring holding members being radially spaced relative to each other.