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US 9,802,268 B2Granted
Projection welding device
AssigneeHyundai Motor Company
InventorsDo-Woon Cho, Chae Won Lim, Yong Joon Cho
Life of this patent
Estimating the term…
Abstract
A projection welding gun device includes an upper welding tip and a lower welding tip that are combined with a gun body through a shank, where the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels, and a rotation unit that is rotated by a driving portion is disposed between the gun body and the shank to rotate the shank.
Claims10
A projection welding gun device, comprising:
- an upper welding tip and a lower welding tip that are combined with a gun body through a shank, wherein the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels;
- and
- a rotation unit that is rotated by a driving portion, the rotation unit being disposed between the gun body and the shank to rotate the shank,
- wherein the rotation unit includes:
- a case that is disposed between the gun body and the shank;
- the driving portion that is disposed in the case;
- and
- a holder that is connected to the driving portion to be rotated thereby and the shank is vertically combined therewith, and
- wherein the driving portion includes:
- an air or hydraulic pressure cylinder;
- a rack gear that is disposed on a rod of the cylinder;
- and
- a pinion gear that is connected to an upper portion of the holder and is engaged with the rack gear.
10 more elements
A projection welding gun device, comprising:
- an upper welding tip and a lower welding tip that are combined with a gun body through a shank, wherein the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels;
- a rotation unit that is rotated by a driving portion, the rotation unit being disposed between the gun body and the shank to rotate the shank;
- and
- a swivel unit disposed between the shank and the upper welding tip to make the upper welding tip contact the shank through a spherical surface,
- wherein the rotation unit includes:
- a case that is disposed between the gun body and the shank;
- the driving portion that is disposed in the case;
- and
- a holder that is connected to the driving portion and is rotated thereby, and the shank is vertically combined therewith, and
- wherein the driving portion includes:
- air or hydraulic pressure cylinder;
- a rack gear that is disposed on a cylinder rod;
- and
- a pinion gear that is connected to an upper portion of the holder and is engaged with a rack.
11 more elements
Dependencies are inferred from the claim text.