DE102004000030B4 - Device for clamping workpieces during radiation welding - Google Patents

Device for clamping workpieces during radiation welding Download PDF

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Publication number
DE102004000030B4
DE102004000030B4 DE102004000030A DE102004000030A DE102004000030B4 DE 102004000030 B4 DE102004000030 B4 DE 102004000030B4 DE 102004000030 A DE102004000030 A DE 102004000030A DE 102004000030 A DE102004000030 A DE 102004000030A DE 102004000030 B4 DE102004000030 B4 DE 102004000030B4
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Prior art keywords
rolling
ring
welding
clamping
rollers
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DE102004000030A1 (en
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Alexander Hofmann
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LPKF Laser and Electronics AG
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LPKF Laser and Electronics AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83417—Roller, cylinder or drum types said rollers, cylinders or drums being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding

Abstract

Abrollende Spannvorrichtung zum Laser-Strahlungsschweißen, dadurch gekennzeichnet, dass das abrollende Spannelement ein Ring ist, der mindestens an drei Punkten entlang seines Umfanges durch auf der Ringinnenseite tangential abrollende Laufrollen in einer Position gehalten wird, so dass ein Drehen des abrollenden Ringes um seinen Mittelpunkt möglich und der Ring mit einem seitlichen Versatz zum Auftreffpunkt der Laserstrahlung angeordnet ist.Rolling tensioning device for laser radiation welding, characterized in that the rolling tensioning element is a ring which is held at least at three points along its circumference by on the inside of the ring tangentially rolling rollers in a position, so that a rotation of the rolling ring around its center possible and the ring is arranged with a lateral offset to the point of impact of the laser radiation.

Figure 00000001
Figure 00000001

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Vorrichtung zum Spannen der Fügepartner beim Verschweißen von thermoplastischen Kunststoffen mit Strahlungsenergie, vorzugsweise im Durchstrahlverfahren.The The invention relates to a device for clamping the joining partners during welding of thermoplastic plastics with radiant energy, preferably in the transmission method.

Beim Durchstrahlschweißen von thermoplastischen Kunststoffen werden die beiden Fügepartner derart angeordnet, dass ein für die einfallende Strahlung durchlässiger Kunststoff einen Strahlungsabsorbierenden überlappt. Nach dem Durchdringen der Strahlung durch den oberen Fügepartner wird diese am unteren Fügepartner mit nur sehr geringer Eindringtiefe in Wärme umgewandelt, worauf die entstandene Wärme durch Wärmeleitung in den angrenzenden oberen Fügepartner transportiert wird. Um eine ausreichende Wärmeleitung in den oberen Fügepartner zu ermöglichen, müssen die beiden Fügepartner mit Spanndruck beaufschlagt werden, um den thermischen Widerstand in der Fügezone so gering wie möglich zu halten.At the Transmission welding of thermoplastics become the two joining partners arranged such that a for the incident radiation more permeable Plastic overlaps a radiation-absorbing. After penetrating the radiation through the upper joining partner becomes these at the bottom joining partner converted into heat with only a very small penetration, whereupon the resulting heat by heat conduction in the adjacent upper joining partner is transported. To ensure sufficient heat conduction into the upper joining partner to enable have to the two joining partners be subjected to clamping pressure to the thermal resistance in the joining zone as low as possible to keep.

Zum Aufbringen des Spanndrucks werden zum aktuellen Stande der Technik verschiedene Vorrichtungen eingesetzt. Spannrahmen sind der Schweißkontur angepasste Frästeile, die die Schweißnaht entlang ihrer gesamten Länge mit Fügedruck beaufschlagen. Als nachteilig bei der Verwendung von Spannrahmen hat sich erwiesen, dass deren Anwendbarkeit auf längere oder komplexe Nahtgeometrien mit stark im Raum variierenden Nahtnormalenvektoren keine gleichmäßige Verteilung des Spanndruckes mehr unter dem Ein fluss geometrischer Formabweichung der Fügepartner ermöglicht. Ferner bietet die Verwendung von Spannrahmen keine Flexibilität hinsichtlich der Schweißnahtgeometrie bei wechselnden Schweißkonturen.To the Applying the clamping pressure become the current state of the art various devices used. Tenter frames are the welding contour adapted milled parts, the the weld along its entire length with jointing pressure apply. As a disadvantage in the use of clamping frames has proven that its applicability to longer or Complex seam geometries with strongly varying normal seam vectors in space no uniform distribution the clamping pressure more under the influence of geometric shape deviation the joining partner allows. Furthermore, the use of tenter does not offer flexibility in terms of the weld geometry with changing welding contours.

Es ist die Verwendung einer strahlungsdurchlässigen Platte bekannt, die die Fügepartner mit Spanndruck beaufschlagen kann und gleichzeitig eine freie Zugänglichkeit der Strahlung in die Fügezone ermöglicht. Die Vorrichtung bietet eine höhere Flexibilität hinsichtlich der Schweißnahtgeometrie als die oben erwähnten Spannrahmen, jedoch beschränkt sich deren Einsatz auf Schweißnahtgeometrien, die sich vorwiegend in einer Ebene erstrecken. Ferner hat sich bei der Verwendung entsprechender strahlungsdurchlässiger Platten als Spannwerkzeug als nachteilig erwiesen, dass Verschmutzungen und Anhaftungen der Spannplatte zu einer oberflächlichen Verbrennung der Spannplatte führen können.It The use of a radiation-transmissive plate is known the joint partners with Can apply clamping pressure and at the same time a free accessibility the radiation into the joining zone allows. The device offers a higher flexibility in terms of weld geometry than the ones mentioned above Tenter, but limited their use on weld geometries, which extend predominantly in one plane. Further, at the use of appropriate radiation-permeable plates as a clamping tool as proved disadvantageous that dirt and adhesions of the clamping plate to a superficial Burn the clamping plate can.

Aus den Druckschriften US 6,270,599 B1 und EP 1 366 890 A1 sind Spannvorrichtungen bekannt, die bei Schweißeinrichtungen für das Fügen von bandförmigen Materialien eingesetzt werden. Dementsprechend erstrecken sich deren Spannelemente in Form von Walzen über die gesamte Breite der von der Walze beaufschlagten Bandmaterialien. Bei diesen Schweißvorrichtungen ist folglich eine Strahlungsquelle im Inneren dieser Walzen angeordnet. Bei der erstgenannten Druckschrift wird diese Walze auf einem massiven inneren Reflektorblock über Kugellager drehbar geführt. In diesem inneren Block ist ferner eine Lampenanordnung zur Bestrahlung der unter der Walze hindurch geführten Lagen und deren Vereinigung angeordnet.From the pamphlets US 6,270,599 B1 and EP 1 366 890 A1 are known clamping devices that are used in welding equipment for the joining of band-shaped materials. Accordingly, their clamping elements extend in the form of rollers over the entire width of the acted upon by the roller strip materials. In these welding devices, therefore, a radiation source is arranged inside these rollers. In the former publication, this roller is rotatably guided on a massive inner reflector block via ball bearings. In this inner block there is further arranged a lamp arrangement for irradiating the layers guided under the roller and their combination.

Die zweit genannte Druckschrift stellt schematisch ein Paar gegenläufig aufeinander abrollender Walzen dar, zwischen denen das Endlosmaterial hindurchgeführt und für das Anbringen einer Schweißnaht mit Hilfe eines Laserstrahls aufeinandergepresst wird. Die untere Walze ist dabei aus einem leicht deformierbaren Material ausgebildet, das sich um den Außenumfang der starren Walze auf einer gewissen Umfangslänge schmiegt.The second mentioned document schematically represents a pair in opposite directions rolling rolls, between which passed through the endless material and for the Attaching a weld is pressed together by means of a laser beam. The lower one Roller is formed from an easily deformable material, that around the outer circumference the rigid roller nestles to a certain circumferential length.

Eine andere Möglichkeit, die Fügepartner zu spannen, besteht in der Verwendung von Spannrollen, die im Gegensatz zu den oben dargestellten Spanntechniken einen lokal begrenzten Bereich der Fügepartner mit Spanndruck beaufschlagen. In der DE 102 61 642 A1 wird eine Vorrichtung offenbart, die die Fügepartner mit einer entsprechenden Spannrolle andrückt und somit als konturunabhängiges Spannmittel dient. Nachteilig wirkt sich bei der offenbarten Anordnung aus, dass der Radius der Spannrolle klein sein muss, um noch Platz in der Schweißvorrichtung für die weiteren Systemkomponenten, wie beispielsweise Fokussieroptiken, zu lassen. Der somit erforderliche kleine Spannrollenradius zieht jedoch eine starke Konzentration des Spanndruckes unter dem Rollenaufsatzpunkt nach sich.Another way of tensioning the joining partners is to use tensioning rollers which, in contrast to the clamping techniques described above, apply a clamping pressure to a locally limited area of the joining partners. In the DE 102 61 642 A1 discloses a device which presses the joining partners with a corresponding tension roller and thus serves as a contour-independent clamping means. A disadvantage of the disclosed arrangement is that the radius of the tensioning roller must be small in order to leave room in the welding device for the other system components, such as focusing optics. However, the thus required small pulley radius entails a strong concentration of the clamping pressure under the roller attachment point.

Unter der Annahme eines rein elastischen Materialverhaltens wird der resultierende Spannungszustand im transmissiven Fügepartner durch die Hertzsche Kontaktpaarung von Rolle und Ebene beschrieben. Aus den entsprechenden Formeln ergibt sich, dass die Länge, auf der der Spanndruck in Richtung der Schweißnaht verteilt wird, mit zunehmendem Rollenradius vergrößert wird, was sich posi tiv auf den Schweißprozess auswirkt. Des Weiteren kommt es insbesondere bei der Verwendung inkohärenter Strahlung als Schweißstrahlung zu einer Erwärmung der Spannrolle durch Absorption von Anteilen der Schweißstrahlung, deren Auftreffort von der Spannrolle abgeschattet wird. Diese Erwärmung der Spannrolle wirkt sich negativ auf die Oberflächenqualität des transparenten Fügepartners aus, da dieser unter dem Einfluss des Spanndrucks bei erhöhter Temperatur zu plastischen Verformungen und somit zu oberflächlichen Abzeichnungen neigt.Under the assumption of a purely elastic material behavior becomes the resulting Stress state in the transmissive joining partner by the Hertzian Contact pairing of role and level described. From the corresponding Formulas it follows that the length, on which the clamping pressure is distributed in the direction of the weld, with increasing Roller radius is increased, which has a positive effect on the welding process effect. Furthermore, it comes in particular in the use incoherent Radiation as welding radiation to a warming the tension roller by absorption of portions of the welding radiation, whose impact is shadowed by the tension roller. This heating of the tension roller has a negative effect on the surface quality of the transparent joining partner because of this under the influence of the clamping pressure at elevated temperature to plastic deformations and thus to superficial decals tends.

Aufgabe der ErfindungObject of the invention

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Rollenspanntechnik zum Laserstrahlkunststoffschweißen, vorzugsweise im Durchstrahlverfahren, zur Verfügung zu stellen, die nicht die oben genannten Nachteile bezüglich der Spanndruckkonzentration und den Rollenerwärmung aufweist, aber gleichzeitig genug Bauraum in der Schweißvorrichtung zur Unterbringung anderer Systemkomponenten lässt.Of the The present invention is based on the object, a roller clamping technique for laser beam plastic welding, preferably by the transmission method, which does not provide the above-mentioned disadvantages the clamping pressure concentration and the roller heating has, but at the same time enough space in the welding device to accommodate other system components.

Zur Lösung dieser Aufgabe weist die erfindungsgemäße Vorrichtung die Merkmale des Anspruchs 1 auf.to solution This object, the device of the invention has the features of claim 1.

Anstelle der dem Stande der Technik entsprechenden Verwendung einer Spannrolle, die drehbar in ihrem Mittelpunkt gelagert ist, verwendet die erfindungsgemäße Vorrichtung einen Spannring, der an mindestens 3 Punkten entlang seines Umfanges auf tangential auf dem Spannring abrollenden Laufrollen gelagert ist. Spannring und Laufrollen können vorzugsweise diametrale Profilquerschnitte auf weisen, durch die der Spannring von den Laufrollen in seiner axialen Richtung geführt werden kann, beispielsweise durch eine umlaufende Nut am Umfang der Laufrollen.Instead of the prior art use of a tensioner pulley, which is rotatably mounted in its center, uses the device according to the invention a tension ring, at least 3 points along its circumference stored on tangentially rolling on the clamping ring rollers is. Clamping ring and rollers can preferably diametrical profile cross-sections have, through the the tension ring are guided by the rollers in its axial direction can, for example by a circumferential groove on the circumference of the rollers.

Die erfindungsgemäße Vorrichtung bietet somit gegenüber den dem Stand der Technik entsprechenden Rollenspannmitteln die vorteilhafte Möglichkeit, eine abrollende Spannvorrichtung mit großem Radius einzusetzen, die dennoch Platz zur Anordnung anderer Systemelemente innerhalb ihres Umfangs bietet. Eine Anordnung der mechanischen Elemente, Prozessdiagnostiksysteme, Einrichthilfen und Strahlführungselemente innerhalb des Umfanges des abrollenden Spannringes ermöglicht somit den Aufbau einer kompakten Schweißvorrichtung, die dennoch eine breitere Verteilung des Spanndrucks gemäß den Formeln der Hertzschen Flächenpressung entlang der Schweißvorschubrichtung in der Fügenaht ermöglicht.The inventive device offers thus opposite the prior art roller tensioning means the advantageous possibility to use a rolling tensioner with a large radius, the nevertheless space for the arrangement of other system elements within their Scope offers. An arrangement of mechanical elements, process diagnostic systems, Setup aids and beam guidance elements within the scope of the rolling clamping ring thus allows the construction of a compact welding device, which nevertheless a wider distribution of the clamping pressure according to the formulas of Hertzian surface pressure along the welding feed direction in the seam allows.

Eine weitere vorteilhafte Wirkung der erfindungsgemäßen Vorrichtung besteht in der geringeren Erwärmung durch absorbierte Schweißstrahlung, da der umlaufende Spannring nur zu einem geringen Anteil seiner Umfangslänge der Bestrahlung ausgesetzt ist, wobei ein bestrahltes Umfangsteilstück anschließend eine zu dieser Bestrahlungszeit in Bezug auf die Dauer eines kompletten Ringumlaufes komplementären Zeitspanne nicht der Strahlungsexposition unterliegt und somit abkühlen kann. Dieser Effekt kann durch eine zusätzliche Kühlung am Umfang des Spannrings noch unterstützt werden, beispielsweise durch eine konvektive Luftkühlung. Insbesondere dann, wenn Randbereiche der Schweißstrahlung zur präziseren Festlegung der Schweißnahtbreite abgeschattet werden sollen, kann die erfindungsgemäße Vorrichtung somit besonders vor teilhaft eingesetzt werden.A Another advantageous effect of the device according to the invention consists in the lower warming by absorbed welding radiation, there the circumferential clamping ring only a small proportion of its circumferential length of Radiation is exposed, with an irradiated peripheral section then a at this irradiation time in relation to the duration of a complete Circumference complementary Period of time is not subject to radiation exposure and thus can cool. This effect can be achieved by additional cooling on the circumference of the clamping ring still supported be, for example, by a convective air cooling. In particular, then if edge areas of the welding radiation for more precise Definition of the weld width to be shaded, the device of the invention thus be used especially before geous.

Ausführungsbeispielembodiment

Zeichnung 1 zeigt eine beispielhafte Ausführungsform der Vorrichtung in der Seitenansicht, Zeichnung 2 in der Frontansicht. An der Hauptträgerplatte (4) ist eine Flanschplatte (1) über mehrere Streben (2) befestigt, die eine Kopplung des Systems an eine beliebige Kinematik ermöglicht. Auf der Hauptträgerplatte (4) sind Auslegerarme (5) befestigt, die die beiden unteren Laufrollen (6), die mit einem Kugellager (9) auf einer Achse (13) gelagert sind, tragen. Mit einem Lagerbock (12), der ebenfalls auf dem Hauptträger (4) montiert ist, wird die obere Laufrolle (14) in Analogie zu den unteren Laufrollen (6) gelagert. Der Spannring (3) läuft mit einem geeigneten Querschnittsprofil tangential um alle 3 Laufrollen (6, 14) um, die an ihrem Umfang eine Nut zur axialen Fixierung des Spannringes (3) aufweisen. Die Schweißstrahlung (10), die durch eine geeignete Fokussiereinrichtung (11) auf die beiden Fügepartner (7, 8) gerichtet wird, hat durch den gering bemessenen seitlichen Versatz des Spannringes (3) zum Auftreffpunkt der Laserstrahlung (15) freien Zugang zur Fügezone, wobei durch den geringen räumlichen Abstand des Spannrings (3) zur Fügezone noch genügend Spanndruck in die Fügezone eingebracht werden kann. Um eine bessere Zugänglichkeit zur Flanschplatte (1) zu gewährleisten, ist der Spannring (3) gegenüber der Hauptträgerplatte schräg geneigt.Drawing 1 shows an exemplary embodiment of the device in the side view, drawing 2 in front view. On the main carrier plate ( 4 ) is a flange plate ( 1 ) over several struts ( 2 ), which allows a coupling of the system to any kinematics. On the main carrier plate ( 4 ) are cantilever arms ( 5 ), which are the two lower rollers ( 6 ) fitted with a ball bearing ( 9 ) on one axis ( 13 ) are carried. With a bearing block ( 12 ), which is also on the main carrier ( 4 ), the upper roller ( 14 ) in analogy to the lower rollers ( 6 ) stored. The clamping ring ( 3 ) runs tangentially around all 3 rollers with a suitable cross-sectional profile ( 6 . 14 ) around which at its periphery a groove for axial fixation of the clamping ring ( 3 ) exhibit. The welding radiation ( 10 ) by a suitable focusing device ( 11 ) to the two joining partners ( 7 . 8th ), has by the small dimensioned lateral displacement of the clamping ring ( 3 ) to the point of impact of the laser radiation ( 15 ) free access to the joining zone, whereby due to the small spatial distance of the clamping ring ( 3 ) to the joining zone still enough clamping pressure can be introduced into the joining zone. For better accessibility to the flange plate ( 1 ), the clamping ring ( 3 ) inclined obliquely relative to the main carrier plate.

Claims (5)

Abrollende Spannvorrichtung zum Laser-Strahlungsschweißen, dadurch gekennzeichnet, dass das abrollende Spannelement ein Ring ist, der mindestens an drei Punkten entlang seines Umfanges durch auf der Ringinnenseite tangential abrollende Laufrollen in einer Position gehalten wird, so dass ein Drehen des abrollenden Ringes um seinen Mittelpunkt möglich und der Ring mit einem seitlichen Versatz zum Auftreffpunkt der Laserstrahlung angeordnet ist.Rolling tensioning device for laser radiation welding, characterized in that the rolling tensioning element is a ring which is held at least at three points along its circumference by on the inside of the ring tangentially rolling rollers in a position, so that a rotation of the rolling ring around its center possible and the ring is arranged with a lateral offset to the point of impact of the laser radiation. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Drehachse des abrollenden Spannelements gegenüber der horizontalen Hauptebene der Schweißvorrichtung geneigt ist.Device according to claim 1, characterized in that that the axis of rotation of the rolling tensioning element relative to the horizontal main plane of the welding device is inclined. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwei Spannringe symmetrisch um den Strahlungsauftreffort angeordnet sind.Device according to one of the preceding claims, characterized characterized in that two clamping rings symmetrically around the Strahlungsauftreffort are arranged. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine der Laufrollen radial federnd gelagert ist.Device according to one of the preceding claims, characterized characterized in that at least one of the rollers radially resilient is stored. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der abrollende Spannring an einer vom Ringaufsetzpunkt auf die Fügepartner verschiedenen Stelle gekühlt wird.Device according to one of the preceding claims, characterized characterized in that the rolling clamping ring at one of the Ringaufsetzpunkt on the joining partners cooled in various places becomes.
DE102004000030A 2004-09-21 2004-09-21 Device for clamping workpieces during radiation welding Expired - Fee Related DE102004000030B4 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350604A (en) * 2011-08-24 2012-02-15 青岛德力源五金制品有限公司 Welding fixture and method for expandable mandrel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111421279B (en) * 2020-04-29 2021-08-13 武汉博畅通信设备有限责任公司 Adjustable sheet welding tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270599B1 (en) * 1996-07-12 2001-08-07 John Wood Enterprises Limited Heat-welding of plastics by radiation
WO2001080588A1 (en) * 2000-04-14 2001-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Multicast paging in a communications system
EP1366890A1 (en) * 2002-05-16 2003-12-03 Leister Process Technologies Proces and apparatus for joining of synthetic materials at high welding speed
DE10261642A1 (en) * 2002-12-27 2004-07-15 Laserquipment Ag Method and device for welding thermoplastic molded parts, in particular for contour welding three-dimensional molded parts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805198A1 (en) * 2000-02-17 2001-08-24 Cebal PROCESS FOR PRODUCING LASER WELDING TUBES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270599B1 (en) * 1996-07-12 2001-08-07 John Wood Enterprises Limited Heat-welding of plastics by radiation
WO2001080588A1 (en) * 2000-04-14 2001-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Multicast paging in a communications system
EP1366890A1 (en) * 2002-05-16 2003-12-03 Leister Process Technologies Proces and apparatus for joining of synthetic materials at high welding speed
DE10261642A1 (en) * 2002-12-27 2004-07-15 Laserquipment Ag Method and device for welding thermoplastic molded parts, in particular for contour welding three-dimensional molded parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350604A (en) * 2011-08-24 2012-02-15 青岛德力源五金制品有限公司 Welding fixture and method for expandable mandrel

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