[특허]Welding wire feeder power application system and method

Welding wire feeder power application system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H05B-006/02 B23K-009/12 B23K-009/10
출원번호	US-0837890 (2013-03-15)
등록번호	US-9662735 (2017-05-30)
발명자 / 주소	Salsich, Anthony Van Bergen Ott, Brian Lee Beistle, Edward G.
출원인 / 주소	ILLINOIS TOOL WORKS INC.
대리인 / 주소	Fletcher Yoder P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 40

초록 ▼

A method of operating a welding wire feeder includes receiving an input power from a welding power source, actuating a power relay to close and open a first current carrying path for application of the input power, and actuating bypass circuitry coupled in parallel to the power relay to close and open a second current carrying path in coordination with actuating the power relay. The method of operating the welding wire feeder also includes providing a welding wire to a welding torch.

대표청구항 ▼

1. A welding wire feeder comprising: a welding wire feed drive configured to drive welding wire towards a welding application;wire feed control circuitry coupled to the welding wire feed drive and configured to control the drive of welding wire towards the welding application;a power relay configured to receive input power and to close to convey the input power to an operational component of the welding wire feeder, wherein the operational component comprises the welding wire feed drive, the wire feed control circuitry, or any combination thereof;bypass circuitry coupled in parallel to the power relay and configured to carry the input power during opening and closing of the power relay, wherein the bypass circuitry comprises a drive circuit and at least one solid state switch responsive to drive signals from the drive circuit; andcontrol circuitry coupled to the power relay and to the bypass circuitry, wherein the control circuitry is configured to apply a first signal to the power relay to close a first current carrying path of the input power to the operational component through the power relay, and the control circuitry is configured to apply a second signal to the bypass circuitry to close a second current carrying path of the input power to the operational component through the bypass circuitry, wherein the control circuitry is configured to apply the second signal to the bypass circuitry to close the second current carrying path at a first time and to apply the first signal to the power relay to close the first current carrying path at a second time, after the first time. 2. The welding wire feeder of claim 1, wherein first signal and the second signal for closing the power relay and for closing the second current carrying path through the bypass circuitry are applied within approximately 5 to 50 milliseconds of each other. 3. The welding wire feeder of claim 1, wherein the power relay comprises a latching relay. 4. The welding wire feeder of claim 1, wherein the at least one solid state switch is responsive to drive signals from the drive circuit to close and open the second current carrying path through the bypass circuitry. 5. The welding wire feeder of claim 1, wherein the bypass circuitry comprises a plurality of solid state switches electrically coupled in parallel to provide a desired current carrying capacity. 6. The welding wire feeder of claim 1, wherein the bypass circuitry comprises a voltage clamping device configured to clamp the voltage responsive to a voltage spike across the bypass circuitry and power relay. 7. The welding wire feeder of claim 1, comprising an input power voltage sensor connected to sense the voltage of the input power and a bus voltage sensor connected to sense the voltage of a bus downstream of the power relay, wherein the control circuitry is configured to monitor the voltages sensed by the input power voltage sensor and the bus voltage sensor and to open the power relay based at least in part on a decline of the input power voltage or the bus voltage. 8. The welding wire feeder of claim 7, comprising a power storage circuit configured to store power for opening the power relay in response to decline of the input power voltage. 9. The welding wire feeder of claim 7, wherein the control circuitry is configured to monitor the voltages sensed by the input power voltage sensor and the bus voltage sensor and to initiate a signal to a welding power source to increase current from an initial level to a greater level based at least in part upon a comparison between the input power voltage and the bus voltage. 10. The welding wire feeder of claim 1, wherein the operational component comprises power conversion circuitry configured to receive the input power from a welding power source and to convert the input power to welding output.

이 특허에 인용된 특허 (40)

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Shutt Robert C. (Gates Mills OH) Black Thomas J. (Middleburg Heights OH) Matthews Victor Y. (University Heights OH), Method and apparatus for arc welding of metal plates from one side only.
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Albrecht,Bruce; Reynolds,Jon; Vogel,Bernard J., Portable welding-type apparatus with interchangeable energy storage device.
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Myers, Russell K., Short arc welding system.
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Reynolds Jon O. (Appleton WI) Risberg Robert L. (Brookfield WI), Stabilized welding power source including a series-resonant current-regulated converter using a transformer having an ai.
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Blankenship George D. (Chardon OH), System and method for controlling a welding process for an arc welder.
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Houston,William S., System and method for determining and employing consumable use by electric arc welders.
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Blankenship, George D.; Hillen, Edward D.; Houston, William S., System for enabling arc welders.
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Veik, Brian James, Voltage regulated DC supply circuit for a wire feed drive system.
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Fernicola Robert C. (Florence SC), Welding torch oscillator control system.
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Tremblay Joseph A. (St. Alma CAX) Talbot Lionel E. (Ville de la Baie CAX), Welding wire feeder system for electric arc welding apparatus.
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Schartner, Quinn W.; Nelson, Andrew D., Wire feed speed referenced variable frequency pulse welding system.
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