| 摘要 |
The invention relates to a braking device ( 12 ), for a wire spool ( 13 ) on an arc welding torch ( 10 ), provided with a holder ( 40 ) hinged on a support ( 14 ) and braking means ( 42 ) arranged to pivot thereon. The wire spool typically comprises a winding region ( 32 ) for winding up the wire electrode and spool edges ( 34, 50 ) extending radially above the same. The braking means ( 42 ) are particularly embodied to exert a frictional force on the spool edges ( 34, 50 ) whilst a retaining device ( 30 ) is provided in the winding region ( 32 ) to retain the wire electrode winding radially inwards.
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