IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0130565
(2000-11-15)
|
우선권정보 |
AT-199901968 (1999-11-19) |
국제출원번호 |
PCT/AT00/00302
(2002-09-20)
|
국제공개번호 |
WO01/38034
(2001-05-31)
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발명자
/ 주소 |
- Artelsmair, Josef
- Brunner, Michael
- Mö
- rtendorfer, Bernhard
|
출원인 / 주소 |
- Fronius International GmbH
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
16 인용 특허 :
1 |
초록
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The invention relates to a method of feeding welding wire ( 13 ) from a wire supply reel ( 14 ) to a welding torch ( 10 ), having at least one welding wire feeder ( 27 ) and an apparatus, in particular another welding wire feeder ( 28 ), for applying a feed force, in particular a main drive ( 29 ) a
The invention relates to a method of feeding welding wire ( 13 ) from a wire supply reel ( 14 ) to a welding torch ( 10 ), having at least one welding wire feeder ( 27 ) and an apparatus, in particular another welding wire feeder ( 28 ), for applying a feed force, in particular a main drive ( 29 ) and an auxiliary drive ( 30 ), whereby a feed force or a pressure force, acting on the welding wire ( 13 ) between the welding wire feeders ( 27, 28 ) is detected by a detection means, in particular a sensor, and compensated or limited. A deflection or lateral deflection of the welding wire ( 13 ) is detected on the basis of the feed force or pressure force on the welding wire ( 13 ) between the welding wire feeders ( 27, 28 ), in particular the main drive ( 29 ) and the auxiliary drive ( 30 ), and this deflection is used as information for regulating at least one of the welding wire feeders ( 27, 28 ).
대표청구항
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1. Method of monitoring a feed force on a welding wire as the welding wire ( 13 ) is fed from a wire supply reel ( 14 ) to a welding torch ( 10 ), the feed force being implied by at least one welding wire feeder ( 27 ) and another welding wire feeder ( 28 ) for applying the feed force acting on the
1. Method of monitoring a feed force on a welding wire as the welding wire ( 13 ) is fed from a wire supply reel ( 14 ) to a welding torch ( 10 ), the feed force being implied by at least one welding wire feeder ( 27 ) and another welding wire feeder ( 28 ) for applying the feed force acting on the welding wire ( 13 ) in a feed direction, and the feed force is directly detected in a wire feed between the at least one welding wire feeder ( 27 ) and the other welding wire feeder ( 28 ), characterised in that a displacement of the welding wire ( 13 ) transversely to the feed direction caused by the feed force is detected in a tubular sensor ( 31 ) between the at least one welding wire feeder ( 27 ) and the other welding wire feeder ( 28 ), the feed force or rate of the at least one welding wire feeder ( 27 ) or the other welding wire feeder ( 28 ) is varied in dependence on the extent of the transverse displacement within the interior of the tubular sensor, and the welding wire is deflected by a baffle system ( 48 ) in the interior of the tubular sensor from a centered rectilinear position in a predetermined direction whereby the direction of deflection of the welding wire is automatically determined when the required feed force is exceeded. 2. Method as claimed in claim 1, characterised in that the extent of the transverse displacement is determined on the basis of a desired/actual comparison. 3. Method as claimed in claim 2, characterised in that a desired extent of the transverse displacement is a value in the range within which the tubular sensor does not detect a signal. 4. Method as claimed in claim 1, characterised in that the at least one welding wire feeder ( 27 ) is a main drive ( 29 ) and is driven at a constant speed and the other welding wire feeder ( 28 ) is an auxiliary drive ( 30 ) and is driven at a variable and controllable speed. 5. Method as claimed in claim 4, characterised in that the speed of the other welding wire feeder ( 28 ) is regulated by a speed regulator unit ( 40 ). 6. Method as claimed in claim 5, characterised in that, on receiving a signal from a detector unit ( 39 ), the speed regulator unit ( 40 ) reduces the speed of the auxiliary drive ( 30 ). 7. Method as claimed in claim 6, characterised in that, on receiving a signal from the detector unit ( 39 ), the speed regulator unit ( 40 ) regulates the other welding wire feeder ( 28 ) so that the feed force on the welding wire ( 13 ) is reduced. 8. Method as claimed in claim 6, characterised in that a signal is transmitted from the detector unit ( 39 ) to the speed regulator unit ( 40 ) if the welding wire ( 13 ) is deflected in the interior of the tubular sensor ( 31 ), so that it comes into contact with a housing ( 26 ) of the tubular sensor ( 31 ) and a short circuit is caused by the welding wire ( 13 ) between a drive element ( 34 ) of the welding wire feeders ( 27 , 28 ) and the housing ( 26 ). 9. Method as claimed in claim 4, characterised in that the feed force between the main drive ( 29 ) and the auxiliary drive ( 30 ) is detected by the tubular sensor ( 31 ). 10. Method as claimed in claim 4, characterised in that, at an optimum feed force from the auxiliary drive ( 30 ) towards the main drive ( 29 ), the welding wire runs ( 13 ) through the tubular sensor ( 31 ), at the centered position. 11. Method as claimed in claim 4, characterised in that the speed or a wire feed rate of the auxiliary drive ( 30 ) is higher, at least at times, than the speed or the wire feed rate of the main drive ( 29 ). 12. Method as claimed in claim 1, characterised in that the feed force is detected by the tubular sensor ( 31 ) transversely to the feed direction of the welding wire ( 13 ). 13. Method as claimed in claim 1, characterised in that the deflection of the welding wire ( 13 ) from the centered position in the tubular sensor ( 31 ) is detected on the basis of the feed force. 14. Method as claimed in claim 1, characterised in that at least one light bar rier ( 41 ) is provided in the interior of the tubular sensor ( 31 ), by means of which the deflection of the welding wire ( 13 ) from the central position in the tubular sensor ( 31 ) is detected. 15. Method as claimed in claim 1, characterised in that at least one pressure element ( 42 , 47 ) is provided in the interior of the tubular sensor ( 31 ), which, on contact, transmits an electric signal proportional to the contact force. 16. Method as claimed in claim 1, characterised in that a partial or lateral deflection of the welding wire ( 13 ) against at least one detector point in the region between the at least one welding wire feeder ( 27 ) and the other welding feeder ( 28 ) is detected by a pressure sensor ( 44 ). 17. Device for monitoring a feed force on a welding wire ( 13 ) as the welding wire ( 13 ) is fed from a wire supply reel ( 14 ) to a welding torch ( 10 ), comprising a first welding wire feeder ( 27 ), another welding wire feeder ( 28 ) for enhancing the feed force, a tubular sensor ( 31 ) for detecting the feed force, the first welding wire feeder ( 27 ) being associated with the wire supply reel ( 14 ) and the other welding wire feeder ( 28 ) being associated with the welding torch ( 10 ), the wire being fed from the wire supply reel ( 14 ) to the welding torch ( 10 ) via a hose pack ( 23 ) or a guide system, the tubular sensor being associated with the welding wire ( 13 ) to detect a fluctuation in the feed force, tubular sensor ( 31 ) being arranged between the first welding wire feeder ( 27 ) and the other welding wire feeder ( 28 ), and serving to detect a deflection of the welding wire ( 13 ) away from a feed direction in the interior of the tubular sensor, and a baffle system ( 43 ) in a housing ( 35 ) of the tubular sensor for deflecting the welding wire from a centered rectilinear position in a predetermined direction whereby the direction of deflection of the welding wire is automatically determined when the required feed force is exceeded. 18. Device as claimed in claim 17, characterised in that the first welding wire feeder ( 27 ) is an auxiliary drive ( 30 ) and the other welding wire feeder ( 28 ) is a main drive ( 29 ). 19. Device as claimed in claim 17, characterised in that the tubular sensor ( 31 ) is disposed in a feed direction of the welding wire ( 13 ) and encloses a part of the welding wire ( 13 ). 20. Device as claimed in claim 17, characterised in that at least one of the welding wire feeders consists of a drive motor ( 32 , 33 ) and at least one drive element ( 34 ) acting on the welding wire ( 13 ). 21. Device as claimed in claim 17, characterised in that the tubular sensor ( 31 ) comprises a housing ( 35 ), with a wire infeed guide ( 36 ) and a wire outfeed guide ( 37 ), made from a material that is not electrically conductive. 22. Device as claimed in claim 17, characterised in that the tubular sensor ( 31 ) is made from a material that is electrically conductive and has an internal diameter larger than an external diameter of the welding wire ( 13 ). 23. Device as claimed in claim 17, characterised in that the tubular sensor ( 31 ) is connected to a detector unit ( 39 ), which is in turn electrically connected to at least one of the welding wire feeders. 24. Device as claimed in claim 23, characterised in that the detector unit ( 39 ) is connected to a speed regulator unit ( 40 ) co-operating with at least one of the welding wire feeders. 25. Device as claimed in claim 17, characterised in that the tubular sensor ( 31 ) has at least one pressure element ( 42 ) in the interior. 26. Device as claimed in claim 17, characterised in that at least one light barrier ( 41 ) consisting of a light-emitting element and-a light-sensitive element is provided in the interior of the tubular sensor ( 31 ). 27. Device as claimed in claim 17, characterised in that the tubular sensor is a pressure sensor ( 44 ) disposed at a detector point and enclosing the welding wire ( 13 ). 28. Device for feed ing welding wire ( 13 ) from a wire supply reel ( 14 ) to a welding torch ( 10 ), comprising a first welding wire feeder ( 27 ) and another welding wire feeder ( 28 ) assigned to the wire supply reel ( 14 ) provided in the form of a welding wire roller, the wire being fed from the wire supply reel ( 14 ) to the welding torch ( 10 ) via a hose pack ( 23 ) or a guide system, in particular a tube provided in the hose pack ( 23 ) or in the guide system, and a wire wheel unit ( 48 ) in which the welding wire ( 13 ) runs in a looping shape is disposed before the point at which the welding wire ( 13 ) enters the hose pack ( 23 ) or the guide system, a detection means ( 49 ), in particular a sensor, being assigned to the welding wire ( 13 ) in the wire wheel unit ( 48 ) to detect the bending behaviour of the welding wire ( 13 ), characterised in that the wire supply reel ( 14 ) is disposed so as to rotate at the center of the loop-shaped path of the welding wire ( 13 ) in the wire wheel unit ( 48 ), the detection means ( 49 ) being an angle sensor or a rheostat ( 50 ) and the detection means is applied via a rigid lever ( 51 ) attached thereto to the welding wire ( 13 ) in the wire wheel unit ( 48 ) and the detection means ( 49 ) is connected to a controller unit ( 52 ) for the welding wire feeder ( 27 ) and/or the apparatus, in particular the other welding wire feeder ( 28 ). 29. Device as claimed in claim 28, characterised in that the detection means ( 49 ) is set up so to transmit information for controlling the first welding wire feeder ( 27 ). 30. Device as claimed in claim 28, characterised in that the first welding wire feeder ( 27 ), in particular a main drive ( 29 ) co-operates with the welding torch ( 10 ) and the other welding wire feeder ( 28 ), in particular an auxiliary drive ( 30 ), co-operates with the wire supply reel ( 14 ). 31. Device as claimed in claim 28, characterised in that the lever ( 51 ) of the detection means ( 49 ) is joined to the welding wire ( 13 ) so as to be displaceable therewith. 32. Device as claimed in claim 28, characterised in that the wire wheel unit ( 48 ), the wire supply reel ( 14 ), the first welding wire feeder ( 27 ), in particular its drive elements ( 34 ), and the other welding wire feeder ( 28 ), as well as the detection means ( 49 ) are arranged in a wire supply housing, in particular in a housing case ( 53 ) of the welding device ( 1 ). 33. Device as claimed in claim 28, characterised in that the wire wheel unit ( 48 ) has a housing case ( 53 ), which is designed to impart a loop-shaped, freely displaceable course to the welding wire ( 13 ), about the wire supply reel ( 14 ). 34. Device as claimed in claim 28, characterised in that the detection means ( 49 ) is designed to monitor the loop-shaped path of the welding wire ( 13 ) about the wire supply reel ( 14 ). 35. Device as claimed in claim 28, characterised in that the detection means ( 49 ), in particular the angle sensor or the rheostat ( 50 ) is disposed, along with the lever ( 51 ) within the loop-shaped path of the welding wire ( 13 ).
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