One-sided spot welding device
AssigneeHyundai Motor Company
InventorSo Young Lee
Life of this patent
Estimating the term…
Abstract
A one-sided spot welding device of the present invention includes a gun body portion including: an upper body disposed at an end of an arm of a robot and a hollow lower body disposed at a lower portion of the upper body; a power supply portion disposed within the lower body, a welding electrode portion i) disposed at a lower side of the lower body, ii) supplied welding power from the power supply portion, and iii) configured to weld welding base metals together by electrical resistance welding; a coated metal band supply portion supplying a coated metal band between the welding base metal and the welding electrode; and a ground electrode portion, electrically connected to the power supply portion and disposed at the other lower side of the lower body for contacting the welding base metal.
Claims15
A one-sided spot welding device comprising:
- a gun body portion including an upper body disposed at an end of an arm of a robot and a hollow lower body disposed at a lower portion of the upper body;
- a power supply portion disposed within the lower body;
- a welding electrode portion disposed at a lower side of the lower body, supplied welding power from the power supply portion, and configured to weld welding base metals together by electrical resistance welding;
- a coated metal band supply portion supplying a coated metal band between the welding base metal and the welding electrode;
- and
- a ground electrode portion, electrically connected to the power supply portion and disposed at the other lower side of the lower body for contacting the welding base metal.
A method for one-sided spot welding comprising:
- locating a welding electrode to a weld zone on one side of a first welding base metal;
- interposing a coated metal band between the welding base metal and the welding electrode;
- contacting, from the same side, a second welding base metal with a ground electrode electrically connected to a power supply, the second welding based metal in contact with the first welding base metal at the weld zone;
- and
- supplying welding power to a welding electrode by the power supply to weld the first and second welding base metals together by electrical resistance welding at the weld zone.
Dependencies are inferred from the claim text.