Structure for treating torch cable for arc welding robot

A structure for treating a torch cable for an arc welding robot, comprising;

• a robot base installed on a ceiling, an upper arm extending downward, a front arm including a front arm base and a first wrist element, a second wrist element and a welding torch, wherein
• said first wrist element is attached to a tip end of said front arm base to be rotatable about a first axis extending in the longitudinal direction of said front arm,
• said second wrist element is attached to said first wrist element to be rotatable about a second axis extending generally vertical to said first axis,
• said welding torch is provided so that a tip end of said welding torch is directed downward when the robot is in a posture wherein a position of said second axis is located above said front arm base and a tip end of said second wrist element is below the position of said second axis, and is rotatable about a third axis extending generally vertical to said second axis and away from said first axis at a predetermined distance,
• a torch cable extending from said welding torch passes through a space above said first wrist element and is connected via an intermediate guide provided on the front arm base to a wire delivery device provided at a position other than said front arm, and
• a guiding member is provided in said intermediate guide for reciprocatedly guiding an intermediate portion of said torch cable along the longitudinal direction of said torch cable.

A structure for treating a torch cable for an arc welding robot, comprising;

• a robot base installed on a ceiling, an upper arm extending downward, a front arm including a front arm base and a first wrist element, a second wrist element and a welding torch, wherein
• said first wrist element is attached to a tip end of said front arm base to be rotatable about a first axis extending in the longitudinal direction of said front arm,
• said second wrist element is attached to said first wrist element to be rotatable about a second axis extending generally vertical to said first axis,
• said welding torch is provided so that a tip end of said welding torch is directed downward when the robot is in a posture wherein a position of said second axis is located above said front arm base and a tip end of said second wrist element is below the position of said second axis, and is rotatable about a third axis extending generally vertical to said second axis and away from said first axis at a predetermined distance,
• a slide mechanism having a slider movable along said first axis is provided on said front arm base,
• a welding wire delivery device is attached to said slider, for delivering a welding wire to said welding torch,
• a torch cable extending from said welding torch is arranged so that it passes through said welding wire delivery device and therefrom passes through a space above said first wrist element when the robot is in said posture, to reach said welding torch, and
• means for generating a force for drawing said slider is provided in a direction which is parallel to said first axis and is opposite to said welding torch.

A structure for treating a torch cable for an arc welding robot, comprising;

• a robot base installed on a wall, an upper arm extending in the direction away from said wall, a front arm including a front arm base and a first wrist element, a second wrist element and a welding torch, wherein
• said first wrist element is attached to a tip end of said front arm base to be rotatable about a first axis extending in the longitudinal direction of said front arm,
• said second wrist element is attached to said first wrist element to be rotatable about a second axis extending generally vertical to said first axis,
• said welding torch is provided so that a tip end of said welding torch is directed in the direction away from said wall when the robot is in a posture wherein a position of said second axis is located below said front arm base and a tip end of said second wrist element is at a position on a side farther from said wall than said second axis, and is rotatable about a third axis extending generally vertical to said second axis and away from said first axis at a predetermined distance,
• a slide mechanism having a slider movable along said first axis is provided on said front arm base,
• a torch cable extending from said welding torch is attached at an intermediate portion thereof to said slider and further extends from the position attached to said slider to said welding torch while passing through a space nearer to said wall than said first wrist element when the robot is in said posture, and
• means for generating a force for drawing said slider is provided in a direction which is parallel to said first axis and is opposite to said welding torch.

A structure for treating a torch cable for an arc welding robot, comprising;

• a robot base installed on a wall, an upper arm extending in the direction away from said wall, a front arm including a front arm base and a first wrist element, a second wrist element and a welding torch, wherein
• said first wrist element is attached to a tip end of said front arm base to be rotatable about a first axis extending in the longitudinal direction of said front arm,
• said second wrist element is attached to said first wrist element to be rotatable about a second axis extending generally vertical to said first axis,
• said welding torch is provided so that a tip end of said welding torch is directed in the direction away from said wall when the robot is in a posture wherein a position of said second axis is located below said front arm base and a tip end of said second wrist element is at a position on a side farther from said wall than said second axis, and is rotatable about a third axis extending generally vertical to said second axis and away from said first axis at a predetermined distance,
• a torch cable extending from said welding torch passes through a space nearer to said wall than said first wrist element and is connected via an intermediate guide provided on the front arm base to a wire delivery device provided at a position other than said front arm, and
• a guiding member is provided in said intermediate guide for reciprocatedly guiding an intermediate portion of said torch cable along the longitudinal direction of said torch cable.

A structure for treating a torch cable for an arc welding robot, comprising;

• a robot base installed on a wall, an upper arm extending in the direction away from said wall, a front arm including a front arm base and a first wrist element, a second wrist element and a welding torch, wherein
• said first wrist element is attached to a tip end of said front arm base to be rotatable about a first axis extending in the longitudinal direction of said front arm,
• said second wrist element is attached to said first wrist element to be rotatable about a second axis extending generally vertical to said first axis,
• said welding torch is provided so that a tip end of said welding torch is directed in the direction away from said wall when the robot is in a posture wherein a position of said second axis is located below said front arm base and a tip end of said second wrist element is at a position on a side farther from said wall than said second axis, and is rotatable about a third axis extending generally vertical to said second axis and away from said first axis at a predetermined distance,
• a slide mechanism having a slider movable along said first axis is provided on said front arm base,
• a welding wire delivery device is attached to said slider for delivering a welding wire to said welding torch,
• a torch cable extending from said welding torch is arranged so that it passes through said welding wire delivery device and therefrom passes through a space nearer to said wall than said first wrist element when the robot is in said posture to reach said welding torch, and
• means for generating a force for drawing said slider is provided in a direction which is parallel to said first axis and is opposite to said welding torch.