The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 30, 2013

Filed:

Dec. 03, 2009
Applicants:

Kohei Kanaya, Utsunomiya, JP;

Haruo Machida, Saitama-ken, JP;

Naoji Yamaoka, Sayama, JP;

Tsutomu Asaina, Utsunomiya, JP;

Inventors:

Kohei Kanaya, Utsunomiya, JP;

Haruo Machida, Saitama-ken, JP;

Naoji Yamaoka, Sayama, JP;

Tsutomu Asaina, Utsunomiya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 11/02 (2006.01); B23K 11/06 (2006.01); B23K 11/08 (2006.01); B23K 11/24 (2006.01);
U.S. Cl.
CPC ...
Abstract

The seam welding apparatus welds a workpiece held by a robot while delivering the workpiece between a pair of electrode rolls. The seam welding apparatus includes a load cell mounted on the robot, for detecting a load imposed along a Y direction which is perpendicular to a pressing direction Z along which the electrode rolls press the workpiece at a weld point and a delivering direction X along which the robot delivers the workpiece at the weld point, a robot controller and an arithmetic unit, a turning mechanism for turning the electrode rolls about the pressing direction Z, and a control device for controlling the turning mechanism to operate depending on the magnitude of the load in the Y direction detected by the load cell.


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