Welding torch maintenance center

A method for replacing a welding tip comprising:

• fastening, by a first gripping module, a diffuser of a welding torch without a nozzle so that a welding tip of the welding torch is in alignment with a rotational axis;
• engaging, with a second gripping module, the welding tip of the welding torch;
• simultaneously rotating the welding tip about the rotational axis and actuating the second gripping module vertically along the rotational axis to remove the welding tip from the diffuser;
• providing a new welding tip to the second gripping module;
• and
• attaching the new welding tip to the welding torch,
• wherein a degree of movement freedom is provided for the second gripping module in a direction parallel to the rotational axis, and
• wherein the second gripping module is actuated along the rotational axis by a lift system, the lift system comprising:
• a first rail;
• a carriage movable along the first rail, the carriage carrying the second gripping module;
• and
• a level assembly configured to provide the degree of movement freedom via the carriage in the direction parallel to the rotational axis,
• the level assembly comprising:
• a resilient member;
• and
• a holder member configured to hold a lifting member configured to lift the carriage, the holder member coupled to the resilient member;
• and
• a supporting member coupled to the resilient member such that the holder member is movable relative to the supporting member.