Title:
DEVICE FOR FEEDING WELDING WIRE
Document Type and Number:
Japanese Patent JP3875437
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the stability of an arc and weldability by preventing the generation of chips of a welding wire.
SOLUTION: This device is provided with a feed roller 1 and a pressurizing roller which is arranged in proximity to this feed roller 1 and constituted so that a welding wire 21 is fed by rotating the feed roller 1 in a state where the welding wire 21 is put between the groove 2 of the feed roller 1 and the pressurizing roller and pressurized. The feed roller 1 has the groove 2 in which the welding wire 21 is put on its outer peripheral surface, a circular-arc part 3 which consists of a concave curved surface of a radius R2 of 1.01-3 times the radius R1 of the welding wire 21 is provided on the bottom of the groove 2 and the depth d1 of the groove 2 is taken as <2 times the radius R1 of the welding wire 21. In this way, the welding wire 21 is always pressurized in a state where the wire is brought into contact with the bottom of the groove 2 of the feed roller 1, so the surface of the welding wire 21 is not scratched and the generation of the chips of the welding wire 21 is prevented.
Inventors:
Katsumi Handa
Santoku Akaishi
Santoku Akaishi
Application Number:
JP33093399A
Publication Date:
January 31, 2007
Filing Date:
November 22, 1999
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
B23K9/12; B23K9/133; B65H57/14; (IPC1-7): B23K9/12; B23K9/133; //B65H57/14
Domestic Patent References:
| JP10324458A |
Attorney, Agent or Firm:
Akio Miyai
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