Patent ID: 9630271
Date: 2017-04-25
CPC Classifications: B23K

Claim:
1. A welding gun comprising: a bending pipe ( an insulating barrel ( a nozzle ( a connector ( a cap ( wherein: the bending pipe has an end provided with a mounting seat ( a liner tube ( a spring (S) is mounted on the liner tube; the mounting seat has an exterior provided with an stepped edge ( the groove of the mounting seat is defined between the stepped edge and the external thread and has a periphery provided with a plurality of flow channels ( the mounting seat has an interior provided with an internal thread ( the insulating barrel is disposed outside of and surrounds the mounting seat; the insulating barrel has an interior provided with a mounting hole ( the air chamber of the insulating barrel is disposed outside of and connected to the flow channels of the mounting seat; the mounting hole of the insulating barrel is mounted on the stepped edge of the mounting seat to allow a welding gas to flow through the flow channels of the mounting seat into the air chamber of the insulating barrel; the air chamber of the insulating barrel includes a plane ( the internal thread of the insulating barrel is screwed onto the external thread of the mounting seat; the insulating barrel has a mediate portion provided with a recessed end face ( the guiding holes of the insulating barrel are connected to the air chamber and correspond to the plane of the air chamber; the insulating barrel has an exterior provided with an external thread ( the nozzle ( the nozzle has an interior provided with an outlet port ( the connector has a first end provided with a first inner thread ( the connector has an interior provided with a conical guide face ( the guide face of the connector corresponds to the guiding holes of the insulating barrel to guide and direct the welding gas toward a central position of the connector; the guide face of the connector is arranged between the guiding holes of the insulating barrel and the restriction flow channel; the restriction flow channel of the connector restricts the welding gas in the cap; the cap has an end provided with an outer thread ( the cap covers the mounting seat and the nozzle.