EP3126087A1 - Welding electrode unit - Google Patents
Welding electrode unitInfo
- Publication number
- EP3126087A1 EP3126087A1 EP15712865.3A EP15712865A EP3126087A1 EP 3126087 A1 EP3126087 A1 EP 3126087A1 EP 15712865 A EP15712865 A EP 15712865A EP 3126087 A1 EP3126087 A1 EP 3126087A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- welding electrode
- electrode unit
- nachsetzeinrichtung
- vorhubbewegung
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/14—Projection welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/317—Equalizing; Balancing devices for electrode holders
Definitions
- the present invention relates to a welding electrode unit and to a method for welding, preferably for projection welding.
- Such welding electrode units are known, for example, from industrial manufacturing plants in which workpieces are welded at high clocking. In doing so, the welding electrodes perform pre-strokes to contact a workpiece to be welded. It is imperative that the
- Welding electrode unit contacted the workpiece with a welding electrode to maintain an electric current necessary for the welding process. If the contact is interrupted, the flow of current through the welding electrode stops, whereupon the welding process stops. Such a tearing of the contact between the welding electrode and the workpiece is often inevitable when the welding process is part of the
- the interrupted welding process then has an adverse effect on the strength and the visual quality (surface quality) of the weld.
- Movement of the welding electrode determined by a coupling of the Nachsetzdoch with the Vorhubdoch.
- the keeping constant of the pressure of the welding electrode on the workpiece during the welding process should be further optimized.
- the welding electrode unit it is the intention with the welding electrode unit to increase the strength in the weld as well as their visual point quality (surface quality).
- the object is achieved by a welding electrode unit, wherein the
- Welding electrode unit comprises a movable Nachsetz spectacular, wherein the
- the welding electrode unit according to the invention has the advantage that the Nachsetz raised can be locked in the welding position.
- locking the Nachsetzzi is determined solely by the force storage means and is substantially independent of other potential parameters that could influence the Nachsetzzi with. This advantageously makes it possible to keep the pressure set in the welding process constant.
- the welding electrode comes into contact with a workpiece to be welded in the welding position. It is preferred as
- Part of a manufacturing plant in which, for example, workpieces before the
- the workpiece is a sheet metal that is to be provided and then first formed in the course of the production process and subsequently, for example, to a
- the Nachsetziens ensures that the contact between the welding electrode and workpiece to be welded, which might otherwise be interrupted by the melting in the weld, maintained.
- Vorhubterrorism is decoupled from the Nachsetzzi. Pre-stroke movement and Nachsetzzi preferably take place in the same direction on a workpiece direction.
- Decoupling is advantageously a Mitbeeintr foundedung the Nachsetzzi excluded by the Vorhubzi, which can otherwise be difficult to avoid because Vorhubterrorism and Nachsetzzi are preferably rectified.
- the force applied to the welding electrode is determined by the force storing means.
- Knee lever mechanism a substantially perpendicular to the Vorhubdoch extending drive movement in the Vorhubdoch the Vietnamesesetz noticed is translatable. This makes it possible to realize advantageously a welding electrode unit, which can be integrated into a production plant to save space. In particular, can be increased by the toggle mechanism of the stroke without reducing the Vorhubkraft.
- the welding electrode unit is designed such that the Vorhubterrorism takes place with a time delay to the Nachsetzzi.
- the Vorhubterrorism is terminated when the welding position is reached. Only then do the welding process and the repositioning movement required to maintain the welding process begin.
- Knee lever mechanism extends and locks the Nachsetz observed whose
- a Vorhubraum along which the Vorhubonia takes place, by means of a column guide can be fixed. It is provided that the Nachsetz noticed is connected to the column guide so that the Nachsetz immunity uses the column guide as a kind of rail system. It is conceivable that the Nachsetz issued the column guide at least partially surrounds and is movable relative to it. By the column guide the Vohubterrorism is controlled and supports the transmission of the drive movement to the Vorhubterrorism in an advantageous manner.
- the toggle mechanism is connected to a power source, wherein the Vorhubterrorism by a power flow of the Power source via the toggle mechanism in the Nachsetz sensible is controllable.
- the power source causes the drive movement and the toggle mechanism transmits the outgoing from the power source force loss as possible on the
- the power source a a
- Compressor, a pump and / or a pneumatic cylinder includes.
- the power source is adapted to the desired or required Vorhubterrorism.
- the power source is directly controllable and / or adapted to the timing in a manufacturing plant.
- a compact welding electrode unit can be realized, which can be integrated as easily as possible into a production plant.
- the force storage means comprises a compression spring, an elastomer, a hydraulic and / or another pneumatic cylinder.
- the force storage means is at least partially enveloped by the Nachsetz noticed and carried in the Nachsetz gear in the Vorhubiolo.
- the force with which the welding electrode is acted upon can be optimally adapted to the welding process or to the workpiece to be welded.
- a sensor means for force measurement By means of the adjusting screw can be fixed advantageously a biasing force for the Nachsetzzi.
- the force measuring sensor means that it is possible to check immediately whether the pressure is constant or whether a readjustment of the pretensioning force is required. This makes it possible to ensure that the pressure of the welding electrode on the workpiece during the
- the Nachsetz shark is at least partially encased by a housing and / or arranged on a base plate.
- the housing comprises on one of the base plate facing away Side a lid region on which the force storage means is arranged.
- the housing not only holds the force storage means, but protects it in an advantageous manner against harmful environmental influences that could permanently limit the functionality of the force storage means.
- the welding electrode is connected via a plunger with the force storage means and the base plate has a recess through which the plunger is passed.
- the plunger is arranged on the force storage means in such a way that the plunger and / or the energy storage means at least partially protrudes from the housing.
- the plunger can be guided through the recess with a precise fit, thereby further advantageously supporting the advancing movement along the advancing direction.
- an adapter is arranged between welding electrodes and plunger, wherein the adapter is adaptable to a workpiece to be welded. It is conceivable that different adapters differ, for example, in their length. Depending on the thickness of the workpiece can then choose the right adapter for the respective manufacturing process. As a result, the welding electrode unit can be used for a variety of different workpieces. This is particularly advantageous for manufacturing equipment in which different components are formed and / or welded.
- Another object of the present invention is a method for welding, preferably for projection welding, wherein a welding electrode by a
- Vorhubterrorism is transferred to a welding position, one with the
- the Vorhubieri of the Nachsetz is decoupled. Due to the decoupling the Nachsetzzi is solely dependent on the power storage means and is therefore easier and more precise adjustable.
- FIG. 1 shows a perspective view of a welding unit according to a first exemplary embodiment of the present invention.
- FIGS. 2a and 2b show in different side views respectively the
- FIGS 2a and 2b show in different side views each one
- a such welding electrode unit 100 is, for example, part of a manufacturing plant, in which a component for a vehicle, such as a hood, molded and joined. It is conceivable that in the manufacturing plant one or more workpieces 12 are first folded and then welded in a welding process in a weld 14. Preferably, the welding process is one
- the welding electrode unit 100 is responsible for the welding.
- the welding electrode unit 100 in this case comprises a welding electrode 13, which is arranged via an adapter 18 on a plunger 11.
- the plunger 11 is retracted relative to a base plate 5, whereby the welding electrode 13 is arranged at a distance from the workpieces to be welded or to the workpiece 12 to be welded.
- the base plate 5 of the welding electrode unit 100 comprises a
- the recess is preferably adapted precisely to the plunger 1 1.
- the leadership of the plunger can be supported 1 1 during its Vorhubmony. It is conceivable that the plunger 1 1 protrudes at least partially from the base plate 5 already in the basic position.
- the compression spring 8 is connected via an upper spring pin 7 with the Nachsetz noticed 2 and a lower spring pin 9 with the plunger 1 1.
- the Nachsetz driving 2 comprises a housing 17, wherein the housing 17 on its side facing away from the base plate 5 has a lid portion on the inside of the upper spring pin 7 and the compression spring 8 is fixed.
- the Nachsetzz driving 2 is driven via a toggle mechanism 4 to a Vorhubdoch.
- the Nachsetz driving 2 itself is coupled to a column guide 3, that the column guide 3, the Vorhubides in the Vorhubterrorism pretends.
- the column guide 3 is also preferably fastened to the base plate.
- the welding electrode unit 100 is the first exemplary one
- Embodiment of the present invention shown in two different side views in a basic position.
- part of the housing 17 is not shown in Figure 2b to release the view of the compression spring 8.
- Knee lever mechanism 4 controlled the Vorhubamba.
- the toggle mechanism 4 is preferably made in detail
- first and the second hinge axis A and B are arranged along a direction parallel to the Vorhubraum direction, wherein
- a piston of Pnaumatikzylinders 6 is extended, the first rocker 41 pivoted clockwise and the distance between the first hinge axis A and the second hinge axis B increases.
- the piston is preferably pivotally connected to the first rocker 41 about a third hinge axis C.
- the third hinge axis C moves at least partially on a circular path.
- the pneumatic cylinder 6 is preferably pivoted on the base plate about a fourth hinge axis D, whereby the piston during its drive movement adjusts its inclination relative to the base plate 5.
- FIGS. 3a and 3b the welding electrode unit 100 in the welding position according to the first exemplary embodiment of the present invention is shown in two different side views.
- the Vorhubterrorism is completed.
- the Vorhubterrorism of Nachsetz responded and thus the plunger 1 1 is preferably completed when the knee joint mechanism 4 is extended, i. the first, the second and the third joint axis A, B and C are arranged along the direction parallel to the Vorhubides E direction.
- the Nachsetz responded 2, preferably locked in a fully extended toggle mechanism 4, in the welding position by means of the toggle mechanism 4.
- the exemplary embodiment is formed by the compression spring 8. It is provided that over the duration of the welding process, the welding electrode 13 acts with a substantially constant force or with a substantially constant pressure on a weld 14. In this way, melting of the workpiece 12 occurring in the course of a welding process due to the system is compensated for in the region of the weld 14 (path-wise) via the trailing movement effected by the compression spring 8.
- the force acting on the plunger 1 1 by the compression spring 8 can optionally be adjusted with the aid of an adjusting screw 1, wherein by means of the adjusting screw 1, a biasing force is adjustable or fixable, with the welding electrode 13 presses on the workpiece 12.
- the welding electrode unit 100 has a sensor means 10 for force measurement, which is preferably arranged between the lower spring pin 9 and the plunger 11. This makes it possible in an advantageous manner, the force effect of the
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014104641.2A DE102014104641B4 (en) | 2014-04-02 | 2014-04-02 | Welding electrode assembly and method for projection welding |
PCT/EP2015/056220 WO2015150160A1 (en) | 2014-04-02 | 2015-03-24 | Welding electrode unit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3126087A1 true EP3126087A1 (en) | 2017-02-08 |
Family
ID=52774212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15712865.3A Withdrawn EP3126087A1 (en) | 2014-04-02 | 2015-03-24 | Welding electrode unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US10625369B2 (en) |
EP (1) | EP3126087A1 (en) |
CN (1) | CN106457452B (en) |
DE (1) | DE102014104641B4 (en) |
WO (1) | WO2015150160A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107309582B (en) * | 2017-08-30 | 2019-12-13 | 广东工业大学 | Electrode welding head |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT362212B (en) * | 1977-12-15 | 1981-04-27 | Leinhaas Werner | DRIVING METHOD FOR MACHINE TOOLS WITH TOOLING TOOL HOLDER |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US896218A (en) * | 1907-11-22 | 1908-08-18 | Laurence S Lachman | Electric welding-machine. |
US2045523A (en) * | 1935-04-15 | 1936-06-23 | Peter W Fassler | One-face resistance welding machine |
US2155412A (en) * | 1937-02-01 | 1939-04-25 | American Coach And Body Compan | Welding apparatus |
US2209932A (en) * | 1937-12-24 | 1940-07-30 | Gen Electric | Resistance line welding control |
US3553420A (en) * | 1969-07-11 | 1971-01-05 | Gen Motors Corp | Method and apparatus for control of resistance welding |
FR2309303A1 (en) * | 1975-04-28 | 1976-11-26 | Carel Fouche Languepin | Centering clamping fixture for sliding welding electrodes - has long restoring spring for smooth return and fine adjustment |
US4425073A (en) | 1980-12-10 | 1984-01-10 | Festo-Maschinenfabrik Gottlieb Stoll | Pivotally supported gripping mechanism |
CN1241153A (en) * | 1996-10-21 | 2000-01-12 | 纽科尔有限公司 | Welding gun for projection welding |
AU1623301A (en) * | 1999-11-19 | 2001-05-30 | Dct, Inc. | Toggle link actuated weld gun |
MXPA04007654A (en) * | 2002-02-05 | 2005-06-08 | Swac Electronic Gmbh | Drive device. |
DE10223821A1 (en) * | 2002-05-28 | 2003-12-11 | Matuschek Mestechnik Gmbh | welding gun |
AT413956B (en) * | 2004-03-25 | 2006-07-15 | Evg Entwicklung Verwert Ges | WELDING MACHINE FOR MANUFACTURING WIRE GRILLE MATS |
FR2903034B1 (en) * | 2006-07-03 | 2009-04-10 | Aro Soc Par Actions Simplifiee | PLIERS HAMMER, USED IN ASSOCIATION WITH A MANIPULATING ARM, AND ELECTROMECHANICAL BALANCING MODULE |
CN201316863Y (en) * | 2008-12-09 | 2009-09-30 | 彩虹显示器件股份有限公司 | Welding gun of single electrode resistance welding |
DE202009002141U1 (en) * | 2009-02-14 | 2009-04-23 | Tünkers Maschinenbau Gmbh | Device with a via an actuator and a toggle joint assembly driven by a drive in opposite directions lever, the one or more masses is assigned or are, in particular for use in the bodywork of the automotive industry |
DE102010005357A1 (en) | 2010-01-21 | 2011-07-28 | ThyssenKrupp Drauz Nothelfer GmbH, 74076 | Welding electrode unit, welding apparatus and method for producing a welded joint |
DE102010042085A1 (en) * | 2010-10-06 | 2012-04-12 | Siemens Aktiengesellschaft | Welding head with force sensor |
EP2611563A1 (en) * | 2010-10-06 | 2013-07-10 | Siemens Aktiengesellschaft | Welding head with a flexible element that can variably set a prestress |
DE102011113403B3 (en) * | 2011-09-16 | 2012-10-31 | TasQ Automatisierung GmbH | Tracking device for tracking welding electrode, has spring arranged at lower end of piston rod, such that lower free end of rod is projected, and spring is subjected to second vertical compressive force |
CN103008861B (en) * | 2012-12-13 | 2014-03-19 | 苏州瑞浦勒自动化系统有限公司 | Special welding machine for iron core ejector rod |
-
2014
- 2014-04-02 DE DE102014104641.2A patent/DE102014104641B4/en not_active Expired - Fee Related
-
2015
- 2015-03-24 EP EP15712865.3A patent/EP3126087A1/en not_active Withdrawn
- 2015-03-24 US US15/300,648 patent/US10625369B2/en not_active Expired - Fee Related
- 2015-03-24 CN CN201580018283.5A patent/CN106457452B/en not_active Expired - Fee Related
- 2015-03-24 WO PCT/EP2015/056220 patent/WO2015150160A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT362212B (en) * | 1977-12-15 | 1981-04-27 | Leinhaas Werner | DRIVING METHOD FOR MACHINE TOOLS WITH TOOLING TOOL HOLDER |
Non-Patent Citations (1)
Title |
---|
See also references of WO2015150160A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102014104641B4 (en) | 2021-01-21 |
CN106457452A (en) | 2017-02-22 |
CN106457452B (en) | 2021-02-05 |
DE102014104641A1 (en) | 2015-10-08 |
US10625369B2 (en) | 2020-04-21 |
WO2015150160A1 (en) | 2015-10-08 |
US20170106465A1 (en) | 2017-04-20 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20160923 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LEIDINGER, STEFAN Inventor name: DOEBERT, MICHAEL Inventor name: KLECHA, DAVID Inventor name: HUSNER, JENS Inventor name: CORNELIUS, PETER |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSENKRUPP SYSTEM ENGINEERING GMBH Owner name: THYSSENKRUPP AG |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20190814 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20200103 |