Pattern welding control device

Claim 2

A fusion welding tracking device which provides a balanced weld fillet along the length of contact between two workpieces to be joined, one workpiece thereof being positioned vertically adjacent to the under surface of the horizontal workpiece, said device comprises: a heat source disposed above the upper surface of said horizontal workpiece and in substantial vertical alignment with said vertical workpiece; a movable frame; a first drive means operably connected to said movable frame for linear movement of said frame and said heat source along said workpieces; a second drive means attached to said movable frame for lateral movement of said heat source during linear movement thereof; heat sensing means disposed below said horizontal workpiece and positioned on both sides of said vertical workpiece, whereby said heat sensing means detects heat radiation from said weld fillet, said sensing means being operably connected to said second drive means for control thereof; and support means for supporting said workpiece in a stationary manner below said heat source.

Claim 3

A fusion welding tracking device as recited in claim 1 wherein said heat sensing means comprises at least one pair of infrared sensors, each of said sensors being oppositely disposed to each other and positioned on opposite sides of said vertical workpiece, whereby said weld fillet is controlled in a balanced condition along the length of contact between said workpieces.

Claim 4

A fusion welding tracking device as recited in claim 2 wherein said vertical workpiece is provided along its length with a non-planar configurations.

Claim 5

A fusion welding tracking device as recited in claim 2 wherein said vertical workpiece is provided along its length with a sinusoidal configuration.

Claim 6

A fusion weldiNg tracking device as recited in claim 2 wherein said heat source comprises a welding torch having an electrode positioned over said horizontal workpiece and in substantially vertical alignment with said vertical workpiece.

Claim 7

A fusion welding tracking device as recited in claim 2 including an operational power amplifier operably connected between said sensing means and second drive means for operable control thereof.

Claim 8

A fusion welding tracking device as recited in claim 5 wherein said first and second drive means respectively comprise first and second electric motors wherein said first motor is provided with a lead screw operably connected to said frame for linear movement thereof and wherein said second motor is provided with a lead screw operably connected to said heat source for lateral movement thereof.

Claim 9

A fusion welding tracking device in combination with two workpieces to be joined together by a weld fillet, said device providing an accurate tracking along an undulating weld joint comprising: a first workpiece thereof being disposed in a horizontal position; a second workpiece thereof being disposed vertically adjacent to the underside of said horizontal workpiece thereby forming a joint to be welded; a heat source disposed above the upper surface of said horizontal workpiece and in substantial vertical alignment with said vertical workpiece; a movable frame; a first drive means operably connected to said movable frame for linear movement of said frame and said heat source along said workpieces; a second drive means attached to said movable frame for lateral movement of said heat sources during linear movement thereof; heat sensing means disposed below said horizontal workpiece and positioned on both sides of said vertical workpiece, whereby said heat sensing means detects heat radiation from said weld fillet, said sensing means being operably connected to said second drive means for operable control thereof, and whereby the tracking of said heat source is controlled for continuous alignment above said vertical workpiece.

Claim 10

A fusion welding tracking device in combination with two workpieces to be joined together by a weld fillet, said device providing an accurate tracking along an undulating weld joint comprising: a first workpiece thereof being disposed in a horizontal position; a second workpiece thereof being disposed vertically adjacent to the underside of said horizontal workpiece thereby forming a joint to be welded; a heat source disposed above the upper surface of said horizontal workpiece and in substantial vertical alignment with said vertical workpiece; a movable frame; a first drive means operably connected to said movable frame for linear movement of said frame and said heat source along said workpieces; a second drive means attached to said movable frame for lateral movement of said heat sources during linear movement thereof; heat sensing means disposed below said horizontal workpiece and positioned on both sides of said vertical workpiece, whereby said heat sensing means detects heat radiation from said weld fillet, said sensing means being operably connected to said second drive means for operable control thereof, and whereby the tracking of said heat source is controlled for continuous alignment above said vertical workpiece.

Claim 11

A fusion welding tracking device as recited in claim 8 wherein said heat sensing means comprises at least one pair of infrared sensors, each of said sensors being oppositely disposed to each other and positioned on opposite sides of said vertical workpiece, and attached to said movable frame for linear movement therewith, whereby heat radiation is sensed on both sides of said vertical wall for tracking control of said lateral movement of said heat source.

Claim 12

A fusion welding tracking device as recited in claim 9 wherein said vertical workpiece is provided along its length with an undulating plane thereby providing a corresponding undulating weld joint.

Claim 13

A fusion welding tracking device as recited in claim 10 wherein said undulating plane comprises a sinusoidal configuration.

Claim 14

A fusion welding tracking device as recited in claim 10 wherein said undulating plane comprises a multiplicity of curvilinear configurations.

Claim 15

A fusion welding tracking device as recited in claim 10 wherein said heat source comprises a welding torch having an electrode positioned over said horizontal workpiece and in substantially vertical alignment with said vertical workpiece.

Claim 16

A fusion welding tracking device as recited in claim 10 including an operational power amplifier operably connected between said sensing means and second drive means for operable control thereof.

Claim 17

A fusion welding tracking device as recited in claim 10 wherein said first and second drive means comprises and electric motor wherein said first motor is provided with a lead screw operably connected to said frame for linear movement thereof and wherein said second motor is provided with a lead screw operably connected to said heat source for lateral movement thereof.