DEVICE FOR RESISTANCE SPOT WELDING Russian patent published in 2019 - IPC B23K11/30 B23K11/31 B23K11/10 

FIELD: machine building.

SUBSTANCE: invention can be used in production of bodies, doors of cars and trucks. In the longitudinal cavity of the holder having transverse windows for cooling agent there is a tube for coolant supply with a side gap. Electrode cap is arranged with conical cavity on front conical part of holder. Front ends of the holder and the tube are separated by an axial gap from the bottom of the electrode cavity. In the cavity of the holder a bushing is fixed, in which the rear end of the tube is installed. At the front end of the above tube there is a hollow washer with a hollow shank separated by a lateral clearance from the cavity of the holder. Holder front end is furnished with reduction to accommodate said washer with clearance between its lateral surface and side surface of electrode-cap cavity. In the lower part there made are transverse grooves with formation of axial gaps relative to the rear end of the washer installed in it, besides, transverse windows of the shank are located before the bushing and after it.

EFFECT: invention provides high resistance of the electrode.

1 cl, 1 dwg