| 摘要 |
A mouthpiece of a weld gun comprises a hollow body with an internal thread for its attaching to a guide tube of the weld gun, contact elements, a spring and a bush to press the contact elements to the mobile electrode wire. The contact elements are made in the form of wedge-shaped plates of a thickness less than the diameter of the electrode wire and inserted with possibility of axial displacement under the action of the compressed spring into the slit-like grooves with an inclined bearing surface of a bush screwed into a threaded hole of the body from the working end of mouthpiece. |
