DE10335446A1 - Laser welding of plastic components involves location of energy absorber film between the two components - Google Patents
Laser welding of plastic components involves location of energy absorber film between the two components Download PDFInfo
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- DE10335446A1 DE10335446A1 DE10335446A DE10335446A DE10335446A1 DE 10335446 A1 DE10335446 A1 DE 10335446A1 DE 10335446 A DE10335446 A DE 10335446A DE 10335446 A DE10335446 A DE 10335446A DE 10335446 A1 DE10335446 A1 DE 10335446A1
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- Prior art keywords
- film
- laser
- joining
- welding
- joining partners
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Classifications
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- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/342—Preventing air-inclusions
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- 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
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- 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
- B29C65/1677—Laser beams making use of an absorber or impact modifier
- B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
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- 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
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
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- 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
- B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser welding
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- 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
- B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
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- 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
- B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
- B29C65/1667—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser welding
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- 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
- B29C65/1674—Laser beams characterised by the way of heating the interface making use of laser diodes
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- 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
- B29C65/1687—Laser beams making use of light guides
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- 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
- B29C65/1696—Laser beams making use of masks
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- 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
- B29C66/71—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 composition of the plastics material of the parts to be joined
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- 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
- B29C66/737—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 state of the material of the parts to be joined
- B29C66/7375—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 state of the material of the parts to be joined uncured, partially cured or fully cured
- B29C66/73755—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
- B29C66/73756—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized the to-be-joined areas of both parts to be joined being fully cured
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- 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
- B29C66/737—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 state of the material of the parts to be joined
- B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
- B29C66/73775—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline
- B29C66/73776—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline the to-be-joined areas of both parts to be joined being crystalline
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- 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
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- 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
- B29C66/7394—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 thermoset
- B29C66/73941—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 thermoset characterised by the materials of both parts being thermosets
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Durchstrahlschweißen, insbesondere zum Laserdurchstrahlschweißen, eine Vorrichtung zur Durchführung des Verfahrens sowie die Verwendung einer absorbierenden Folie beim Laserdurchstrahlschweißen.The The invention relates to a method for transmission welding, in particular for laser transmission welding, a device for carrying out the method and the use of an absorbent film in the Laser transmission welding.
Das Durchstrahlschweißen, insbesondere das Laserdurchstrahlschweißen, verbindet ein transparentes Bauteil mit einem absorbierenden Bauteil. Diese optischen Eigenschaften müssen nur für Laserwellenlängen erfüllt sein. Das transparente Bauteil wird von dem Laser durchstrahlt, ohne dass der Laserstrahl dabei zu sehr geschwächt wird. Durch die Absorption am darunter liegenden Bauteil entsteht eine sehr dünne lokale Schmelze an beiden Bauteilen, sofern sie dicht aneinander fixiert sind. Das Laserdurchstrahlverfahren ermöglicht somit eine hohe Schweißqualität, insbesondere bei Kunststoffen. Die geringe Schmelzbildung und das nahezu perfekte Schweißbild, die sehr feine, eng begrenzte Schmelzbildung und die typischerweise dichten Schweißnähte wie auch die hohe Festigkeit, der geringe Verzug und die hohe Schonung der Bauteile haben dazu geführt, dass das Laserdurchstrahlschweißen in der Medizin-/Biotechnologie aber auch für die hohen Ansprüche der Automobilindustrie eingesetzt werden kann. Nachteilhafterweise ist die Qualität der Schweißnaht vor allem von der Schmelze und somit von dem Verhältnis des transparenten Materials zu dem Material mit der hohen Absorptionskonstante sowie von der Wellenlänge des Laserstrahls abhängig. Für viele Anwendungen ist es nicht möglich, die Wellenlänge des Laserstrahls so nachhaltig zu verändern, dass eine neue qualitativ höherwertige Schmelze und somit eine bessere und stabilere Schweißnaht generiert werden kann. Ein weiterer Nachteil ist, dass ein eventueller auftretender größerer Spalt zwischen den Materialien, die auch als Fügepartner bezeichnet werden, beim Laserdurchstrahlschweißen kaum überbrückt werden kann. Das liegt unter anderem daran, dass das Aufschmelzen der Fügepartner indirekt über die Fügepartner selbst erfolgt. Der für eine Verschweißung erforderliche Wärmeübergang zwischen den beiden Teilen verschlechtert sich drastisch mit dem Auftreten eines Fügespaltes. Aufgrund des geringen Schmelzvolumens und der damit verbundenen geringen Schmelzexpansion können nur sehr schmale Spalte überbrückt werden. Die nicht gleichmäßige Erwärmung der beiden Fügepartner führt zu einer Bildung einer Schweißlinse, die nicht in der Mitte zwischen den Schweißteilen liegt, sondern ihre stärkere Ausbildung im stärker absorbierenden Fügepartner hat. Bei zu hoher Laserleistung, beispielsweise um den Spalt zwischen den Fügepartnern zu überwinden, entstehen kleine Lunker, Luft- oder Gaseinschlüsse durch verdampfendes Material.The Transmission welding, in particular the laser transmission welding, connects a transparent Component with an absorbent component. These optical properties have to only for Laser wavelengths Fulfills be. The transparent component is irradiated by the laser, without the laser beam being weakened too much. By the absorption the underlying component creates a very thin local Melt on both components, provided they are tightly fixed are. The laser transmission method thus enables a high welding quality, in particular in plastics. The low melting and the almost perfect welding pattern, the very fine, narrow-enameled and typically dense welds like also the high strength, the low distortion and the high protection of the components have led that the laser transmission welding in the medical / biotechnology but also for the high demands of the Automotive industry can be used. Disadvantageously the quality the weld especially from the melt and thus from the ratio of transparent material to the high absorption constant material as well from the wavelength depending on the laser beam. For many Applications it is not possible the wavelength the laser beam so sustainable that a new qualitative higher quality melt and thus a better and more stable weld can be generated. Another disadvantage is that an eventual larger gap between the materials, which are also referred to as joining partners, during laser transmission welding hardly be bridged can. This is partly due to the fact that the melting of the joining partners indirectly via the joining partners even done. The for a weld required heat transfer between the two parts worsens drastically with the Occurrence of a joint gap. Due to the low melt volume and the associated low melt expansion can only very narrow gaps are bridged. The non-uniform heating of the two joining partners leads to a formation of a nugget, which is not in the middle between the welded parts, but theirs more Training in the stronger absorbing joining partner Has. If the laser power is too high, for example around the gap between the joining partners to overcome, small voids, air or gas inclusions caused by evaporating material.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung bereitzustellen, die die bekannten Nachteile verhindert und die eine einfache und effektive und gute Ausbildung der Schweißverbindung ermöglichen.Of the Invention is therefore the object of a method and a To provide apparatus that prevents the known disadvantages and that a simple and effective and good training of the welded joint enable.
Die Erfindung löst dieses Problem durch Bereitstellung eines Verfahrens zum Laserdurchstrahlschweißen zwischen einem ersten, für den eingesetzten Wellenlängenbereich eines Lasers transparenten Fügepartner und einem zweiten Fügepartner, wobei zwischen dem ersten und dem zweiten Fügepartner eine absorbierende Folie positioniert ist.The Invention solves this problem by providing a method for laser transmission welding between a first, for the wavelength range used a laser transparent joining partner and a second joining partner, wherein between the first and the second joining partner an absorbent Slide is positioned.
Überraschenderweise führt der Einsatz einer Folie mit hoher Absorptionskonstante zur Ausbildung einer Schmelze, die in der Mitte zwischen den Schweißteilen liegt, wodurch eine stärkere Ausbildung der Schweißlinse im absorbierenden Bauteil vermieden werden kann. Die Folie weist eine Absorptionskonstante auf, die höher ist als die des ersten Fügepartners, durch den der Laserstrahl hindurchdringt. Die Absorptionskonstante muss hierbei so hoch gewählt sein, dass sich eine Schweißnaht zwischen den Fügepartnern ausbildet. Der Wert der Absorptionskonstante lässt sich durch Routineversuche eines Fachmanns problemlos ermitteln. Der Begriff hohe Absorptionskonstante im Sinne der Erfindung bedeutet also im Zusammenhang mit der absorbierenden Folie eine Absorptionskonstante, die so gewählt ist, dass sie beim Auftreffen des Laserstrahls während des Durchstrahlschweißens zum Aufschmelzen der Folie führt und sich eine Schweißverbindung ausbildet.Surprisingly leads the Use of a film with high absorption constant to form a Melt, which lies in the middle between the welded parts, whereby a more Training the weld nugget can be avoided in the absorbent member. The foil points an absorption constant which is higher than that of the first joining partner, through which the laser beam penetrates. The absorption constant must be so high be that a weld between the joining partners formed. The value of the absorption constant can be determined by routine tests of a Determine expert easily. The term high absorption constant in the context of the invention therefore means in connection with the absorbent Foil an absorption constant that is chosen so that they hit of the laser beam during of transmission welding leads to melting of the film and a welded joint formed.
Die beiden Fügepartner müssen aufgrund der Verwendung der Absorptionsfolie nicht mehr im gesamten Bereich ihrer aufeinander zugewandten Flächen dicht aufeinander liegen. Die Absorptionsfolie absorbiert die Energie des Laserstrahls, wärmt sich auf und bildet so eine Schmelze, die mögliche Fugen auffüllt und die Fügepartner an den Kontaktflächen so lange erwärmt, bis diese ebenfalls auf- beziehungsweise anschmelzen. Durch die Vorgänge kommt es zu thermischen Platzwechselvorgängen der Molekülketten im Grenzbereich zwischen den beiden Lagen und somit zur Ausbildung einer Schweißverbindung. Durch den Einsatz einer die Wellenlänge des Lasers absorbierende Folie kann vorteilhafterweise auf das Einfärben eines Bauteiles, insbesondere des zweiten Fügepartners, verzichtet werden.The two joining partners have to due to the use of the absorption foil no longer throughout Area of their facing surfaces are close to each other. The absorption foil absorbs the energy of the laser beam and warms up and forms a melt that fills up possible joints and the joining partners at the contact surfaces warmed up so long until they also melt or melt. By the Events are coming to thermal space-exchange processes of the molecular chains in the border area between the two layers and thus for training a welded joint. By using a wavelength absorbing laser Film can advantageously be applied to the coloring of a component, in particular the second joining partner, be waived.
Dies ist vor allem für große Bauteile von Bedeutung, da das Zumischen der absorbierenden Farbpigmente mit Kosten und einem technischen Mehraufwand an den Fertigungsanlagen verbunden ist. Toleranzen in der Fügefläche können durch das erfindungsgemäße Verfahren besser ausgeglichen werden, da bei Einsatz einer Folie mit etwas niedrigerem Schmelzpunkt diese früher eine Schmelze bildet. Diese Schmelze füllt den Spalt zwischen den Bauteilen aus und sorgt für einen – für die Wärmeleitung nötigen – Kontakt zwischen der Schmelze und dem Fügepartner, wobei Toleranzen der Fügefläche besonders vorteilhaft ausgeglichen werden können, wenn die Folie eine gewisse Elastizität aufweist. Es ist weiterhin vorteilhaft, wenn die Dicke der Folie möglichst gering gehalten wird, da die Energiezufuhr durch den Laser ausreichen soll, eine genügende Schmelze zu bilden. Abhängig ist die Dicke selbstverständlich von der Breite des zu überbrückenden Fügespalts und von der Elastizität der Folie. Für das anmeldungsgemäße Verfahren besteht die Folie mit der hohen Absorptionskonstante bevorzugt aus dem gleichen thermoplastischen Grundwerkstoff wie die Fügepartner, das heißt den Materialien, die verschweißt werden sollen. Die Schmelztemperatur der Folie und der Fügepartner sollte im Wesentlichen im gleichen Bereich liegen. Die Folie ist bevorzugt mit absorbierenden Stoffen compoundiert, das heißt die Folie ist für den Laser undurchsichtig. Bevorzugt liegt der Schmelzpunkt der Folie mit der hohen Absorptionskonstante 2 bis 15K unter dem Schmelzpunkt des Werkstoffes der Fügepartner.This is especially important for large components, since the admixing of the absorbent Color pigments associated with costs and a technical overhead on the production lines. Tolerances in the joining surface can be better compensated by the inventive method, since when using a film with a slightly lower melting point, this former forms a melt. This melt fills the gap between the components and ensures - necessary for the heat conduction - contact between the melt and the joining partner, with tolerances of the joining surface can be compensated for particularly advantageous if the film has a certain elasticity. It is also advantageous if the thickness of the film is kept as low as possible, since the energy supply by the laser should be sufficient to form a sufficient melt. Of course, the thickness depends on the width of the joint gap to be bridged and on the elasticity of the film. For the method according to the application, the film with the high absorption constant preferably consists of the same thermoplastic base material as the joining partners, that is to say the materials which are to be welded. The melting temperature of the film and the joining partners should be substantially in the same range. The film is preferably compounded with absorbent materials, that is, the film is opaque to the laser. The melting point of the film with the high absorption constant 2 to 15K is preferably below the melting point of the material of the joining partners.
In einer weiteren bevorzugten Ausführungsform der Erfindung ist die Folie durch Zusatzstoffe elastischer als der Werkstoff der Fügepartner. In einer anderen bevorzugten Ausführungsform der Erfindung umfassen die Fügepartner Thermoplaste. Bevorzugt sind die Thermoplaste im Sinne der Erfindung Polymere, die bei der Gebrauchstemperatur weiche oder harte Werkstoffe sind und die oberhalb der Gebrauchstemperatur einen Fließübergang besitzen. Im Sinne der Erfindung können die Thermoplaste bevorzugt aus linearen oder verzweigten Polymeren bestehen, die im Fall amphoterer Thermoplaste oberhalb der Gasübergangstemperatur im Falle der kristallinen Thermoplaste oberhalb der Schmelztemperatur prinzipiell fließfähig werden. Die Thermoplaste sind bevorzugt vernetzte Elastomere oder Duroplaste. Zu diesen gehören beispielsweise die Polyolefine, Vinylpolymere, Polyamide, Polyester, Polyacetate, Polycarbonate, zum Teil auch Polyurethane und Ionomere. Die Thermoplaste im Sinne der Erfindung umfassen also Polymere, deren Eigenschaftsniveau sich von dem der Massenkunststoffe bis zu den der Hochleistungskunststoffe, wie zum Beispiel der Spezialkunststoffe erstreckt. Eine Übergangsgruppe zwischen diesen beiden Kunststoffklassen bilden beispielsweise technische Thermoplaste wie zum Beispiel PMMA, PET, PC, POM, SAN, ABS und/oder PC/ABS.In a further preferred embodiment the invention is the film by additives more elastic than the Material of the joining partners. In another preferred embodiment of the invention the joining partners Thermoplastics. Preference is given to the thermoplastics in the context of the invention Polymers that are soft or hard materials at service temperature are and above the service temperature, a flow transition have. For the purposes of the invention, the thermoplastics may be preferred consist of linear or branched polymers, which in the case of amphoteric Thermoplastics above the gas transition temperature in the case of crystalline thermoplastics above the melting temperature in principle be flowable. The thermoplastics are preferably crosslinked elastomers or thermosets. Belong to these for example, the polyolefins, vinyl polymers, polyamides, polyesters, Polyacetates, polycarbonates, in part also polyurethanes and ionomers. The thermoplastics according to the invention thus comprise polymers, their property level is that of bulk plastics up to to the high-performance plastics, such as special plastics extends. A transition group between these two classes of plastic form, for example, technical Thermoplastics such as PMMA, PET, PC, POM, SAN, ABS and / or PC / ABS.
In einer weiteren besonders bevorzugten Ausführungsform der Erfindung ist der Laser ein Dioden- oder ein Nd:YAG-Laser. Je nach Transmissionsverhalten der einzusetzenden Fügepartner ist die Laserstrahlquelle auszuwählen. Einige Thermoplaste zeigen bei 1064 nm eine höhere Transmission als im Wellenlängenbereich von beispielsweise 810 nm. Bei diesen Materialien ist vorteilhafterweise mit einem Nd:YAG-Laser eine höhere Wanddicke schweißbar.In Another particularly preferred embodiment of the invention the laser is a diode or Nd: YAG laser. Depending on the transmission behavior the joining partner to be used select the laser beam source. Some thermoplastics show a higher transmission at 1064 nm than in the wavelength range of, for example, 810 nm. These materials are advantageously with a Nd: YAG laser a higher Weldable wall thickness.
Bevorzugt wird das erfindungsgemäße Laserdurchstrahlschweißen als Konturschweißen, Simultanschweißen, Quasisimultanschweißen und/oder Maskenschweißen durchgeführt. Für alle Varianten gilt, dass die mindestens zwei oder mehreren Fügepartner schon vor dem Schweißprozess durch eine geeignete Fixierungsvorrichtung zusammengehalten werden. Bei dem Konturschweißen wird eine Fügenaht mit dem Laserstrahl abgefahren, so dass nur eine lokale Plastifizierung durch das Aufschmelzen stattfindet. Die Bewegung des Lasers kann mit verschiedenen Systemen durchgeführt werden, beispielsweise kann der Laserstrahl an einen Lichtwellenleiter eingekoppelt sein, der an einem Roboterarm gefertigt wird oder die beiden Fügepartner werden auf einem Zweiachsentisch befestigt und unter einem fest stehenden Laserstrahl bewegt. Es kann jedoch aber auch vorgesehen sein, dass die Laserstrahlquelle auf einer Zweiachsenverfahreinheit über die Fügeteile bewegt wird. Durch die nur lokal stattfindende Plastifizierung kommt der Genauigkeit der Fügepartner eine hohe Bedeutung zu, mit dieser erfindungsgemäßen Verfahrensvariante können durch die erwärmungsbedingte Volumenzunahme der absorbierenden Folie kleine bis mittelkleine Spalten überbrückt werden. Die dabei gebräuchlichen Verfahrensgeschwindigkeiten liegen je nach Laserleistung (zum Beispiel im Bereich von 10 bis 100 W) und Material- und Wanddicke bei 5 bis 100 mm/s. Vorteilhafterweise ist dieses Verfahren äußerst flexibel einsetzbar und besonders für kleine oder häufig wechselnde Konturen geeignet. Beim erfindungsgemäßen Simultanschweißen werden oberhalb des gesamten Fügenahtverlaufes Laserdioden platziert. Dadurch kann die gesamte Fügenaht gleichzeitig bestrahlt und plastifiziert werden. Sofern die Schweißvorrichtung mit einer Wegmessung ausgerüstet ist, ist es vorteilhafterweise möglich, auch Toleranzen zwischen den Fügepartnern durch einen definierten Fügeweg auszugleichen. Die Schweißzeit ist vorteilhafterweise unabhängig von der Fügenahtlänge und liegt je nach eingesetzter Leistung bei 1 bis 5 s. Beim erfindungsgemäßen Quasisimultanschweißen wird die gesamte Fügefläche quasi gleichzeitig plastifiziert, wobei der Laserstrahl ähnlich wie beim Laserbeschriften mit Hilfe von Umlenkspiegeln mit einer Frequenz von bis zu 50 Hz über die Fügefläche gelenkt wird. Dabei findet eine quasi gleichmäßige Erwärmung der absorbierenden Folie statt. Mit entsprechenden Vorrichtungen ist es wie beim Simultanschweißen möglich, einen Toleranzausgleich mittels eines Fügeweges durchzuführen. Mit dem Quasisimultanschweißen sind auch dreidimensionale Fügebahnverläufe und -radien nahezu uneingeschränkt möglich, da verstellbare Optiken einen Höhenausgleich ermöglichen. Bedingt durch die hohe benötigte Laserleistung von vorteilhafterweise größer 100 W und die Anforderung nach einer guten Fokussierbarkeit kommen hierzu bevorzugt Nd:YAG-Laserquellen zum Einsatz. Beim erfindungsgemäßen Maskenschweißen wird ein Laserstrahl so weit rechteckig aufgeweitet, dass eine Fläche entsteht, die die gesamte Bauteilbreite bestrahlen kann. Damit nur die Fügenaht plastifiziert wird, setzt man zwischen die Strahlenquelle und das Bauteil eine so genannte Maske, die den Strahl nur im Bereich der Fügenaht durchlässt. Die Strahllinie wird dann über das Bauteil geführt und bewirkt so an der Fügefläche eine Plastifizierung, die im Wesentlichen dadurch entsteht, dass der Laserstrahl durch die Absorption durch die Folie in Wärme umgewandelt wird und eine Plastifizierung hervorruft. Durch die dabei entstehende örtliche Volumenzunahme entsteht ein flächiger Kontakt zwischen den Fügepartnern und durch die auftretende Wärmeleitung werden beide Fügepartner plastifiziert. Beim erfindungsgemäßen Maskenschweißen kann es auch vorgesehen sein, dass die Masken insbesondere durch die Form der absorbierenden Folie gebildet werden. Selbstverständlich ist es auch möglich, dass die Absorption der Fügepartner und der Folie in Verbindung mit der eingesetzten Maske beim Maskenschweißen miteinander abgeglichen werden. Je höher die Absorptionskonstante des vom Laserstrahl abgewandten Fügepartners, umso geringer kann die Absorptionskonstante der eingesetzten Folie sein. Sofern beide Fügepartner für den Laser transparent sind, wird die Plastifizierung im Wesentlichen nur durch die Folie hervorgerufen. Durch Ausbildung eines bestimmten Musters der Folie kann beispielsweise beim Maskenverfahren auf die Maske verzichtet werden, da eine Plastifizierung nur an den Stellen vorgenommen wird, an denen der Laser auf die absorbierende Folie trifft.The laser transmission welding according to the invention is preferably carried out as contour welding, simultaneous welding, quasi-simultaneous welding and / or mask welding. For all variants, the at least two or more joining partners are held together by a suitable fixing device before the welding process. In contour welding, a joining seam is traversed with the laser beam, so that only a local plasticization takes place as a result of the melting. The movement of the laser can be carried out with various systems, for example, the laser beam can be coupled to an optical waveguide which is manufactured on a robot arm or the two joining partners are mounted on a two-axis table and moved under a fixed laser beam. However, it can also be provided that the laser beam source is moved on a Zweiachsenverfahreinheit on the Fügeteile. Due to the plasticization takes place only locally, the accuracy of the joining partners is of great importance, with this process variant of the invention can be bridged by the warming-induced volume increase of the absorbent film small to medium-sized columns. Depending on the laser power (for example in the range from 10 to 100 W) and the material and wall thickness, the process speeds used are between 5 and 100 mm / s. Advantageously, this method is extremely flexible and particularly suitable for small or frequently changing contours. In the simultaneous welding according to the invention, laser diodes are placed above the entire joining seam course. As a result, the entire joint seam can be irradiated and plasticized simultaneously. If the welding device is equipped with a displacement measurement, it is advantageously possible to compensate for tolerances between the joining partners by a defined Fügeweg. The welding time is advantageously independent of the joint seam length and is depending on the power used at 1 to 5 s. In Quasisimultanschweißen invention the entire joining surface is virtually simultaneously plasticized, the laser beam is similar to the laser marking with the help of deflecting mirrors with a frequency of up to 50 Hz is directed over the joint surface. In this case, a quasi-uniform heating of the absorbent film takes place. With appropriate devices, it is like the simultaneous Welding possible to perform a tolerance compensation by means of a joining path. With the Quasiimultanschweißen three-dimensional Fügebahnverläufe and radii are almost unrestricted possible because adjustable optics allow height compensation. Due to the high required laser power of advantageously greater than 100 W and the requirement for good focusability, preference is given to using Nd: YAG laser sources for this purpose. When mask welding according to the invention, a laser beam is expanded so far rectangular that a surface is created which can irradiate the entire component width. So that only the joining seam is plasticized, a so-called mask is inserted between the radiation source and the component, which lets the beam through only in the area of the joint seam. The beam line is then passed over the component and thus causes on the joining surface a plasticization, which essentially arises from the fact that the laser beam is converted by the absorption by the film into heat and causes plasticization. As a result of the resulting local increase in volume, there is a surface contact between the joining partners and, due to the heat conduction occurring, both joining partners are plasticized. In mask welding according to the invention, it can also be provided that the masks are formed in particular by the shape of the absorbent film. Of course, it is also possible that the absorption of the joining partners and the film in conjunction with the mask used during mask welding are matched. The higher the absorption constant of the joining partner facing away from the laser beam, the lower the absorption constant of the film used can be. If both joining partners are transparent to the laser, the plasticization is essentially caused only by the film. By forming a specific pattern of the film, the mask can be dispensed with, for example, in the mask process, since plasticization is only carried out at the points at which the laser strikes the absorbent film.
Einfärbungen mit Gasruß können als Laserstrahlabsorbieren zusätzlich zur Absorption eingesetzt werden. Hierbei ist zu beachten, dass die Eindringtiefe mit dem Anteil des Gasrußes variiert. Je höher der Anteil desto größer die Absorption und desto geringer die Eindringtiefe und damit das aufgeschmolzene Materialvolumen. Für das Konturschweißen ist zur Spaltüberbrückung ein hohes Aufschmelzvolumen und damit eine hohe Eindringtiefe erforderlich. Beim Simultan- beziehungsweise Quasisimultanschweißen mit Abschmelzweg ist eine hohe Absorption mit geringer Eindringtiefe zur schnelleren Plastifizierung bevorzugt.coloring with carbon black can as Laser beam absorb additionally be used for absorption. It should be noted that the penetration depth varies with the proportion of the carbon black. The higher the Share the bigger the Absorption and the lower the penetration depth and thus the molten Volume of material. For the contour welding is for gap bridging on high melting volume and thus a high penetration depth required. Simultaneous or quasi-simultaneous welding with Abschmelzweg is a high absorption with low penetration preferred for faster plasticization.
Die Erfindung betrifft auch die Verwendung einer absorbierenden Folie beim Laserdurchstrahlschweißen. Durch die Verwendung der Folie können Toleranzen in der Fügefläche besser ausgeglichen werden, da beim Einsatz dieser Folie insbesondere mit etwas niedrigerem Schmelzpunkt sich früher eine Schmelze bildet. Weiterhin sei auf die Vorteile, die zu dem Verfahren oben ausgeführt worden sind, hingewiesen. Weiterhin betrifft die Erfindung eine Vorrichtung zum Durchstrahlschweißen, bei der zwischen mindestens zwei Fügepartnern eine Absorptionsfolie positioniert ist.The The invention also relates to the use of an absorbent film during laser transmission welding. By using the film can tolerances better in the joining surface be compensated because when using this slide in particular with something lower melting point earlier forms a melt. Furthermore, let's look at the benefits to that Procedure outlined above been pointed out. Furthermore, the invention relates to a Apparatus for transmission welding, in which between at least two joining partners an absorption foil is positioned.
Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen.Further preferred embodiments of the invention will become apparent from the others, in the subclaims mentioned features.
Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand der zugehörigen Zeichnung näher erläutert, ohne auf dieses Ausführungsbeispiel beschränkt zu sein. Die einzige Figur zeigt eine schematische Darstellung des Laserdurchstrahlschweißens mit der erfindungsgemäßen Folie.The Invention will be described below in an embodiment with reference to the accompanying drawings explained in more detail, without to this embodiment limited to be. The single FIGURE shows a schematic representation of the Laser beam welding with the film according to the invention.
Die
Figur zeigt das Laserdurchstrahlschweißen anhand zweier Materialien
- 22
- Materialmaterial
- 44
- erster Fügepartnerfirst joining partner
- 66
- Laserlaser
- 88th
- Laserstrahllaser beam
- 1010
- zweiter Fügepartnersecond joining partner
- 1212
- Fügeflächejoining surface
- 1414
- Foliefoil
- 1616
- Spaltgap
- 1818
- Auftreffpunktof impact
- 2020
- Schmelzemelt
- 2222
- erster Schmelzbereichfirst melting range
- 2424
- zweiter Schmelzbereichsecond melting range
- 2626
- Schweißverbindungwelded joint
- 2828
- Schmelzvolumenmelt volume
- 3030
- Schweißlinsenugget
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EP1669186A1 (en) * | 2003-10-02 | 2006-06-14 | Ube Industries, Ltd. | Material for laser welding and method for laser welding |
EP2108502A1 (en) * | 2008-04-11 | 2009-10-14 | The Boeing Company | Method of making a transparency |
US20120009006A1 (en) * | 2010-07-12 | 2012-01-12 | Robert Bosch Gmbh | Method for Producing a Multilayer System and Corresponding Multilayer System |
DE102013013415A1 (en) * | 2013-08-09 | 2015-02-12 | Fresenius Medical Care Deutschland Gmbh | cassette module |
DE102015219120A1 (en) | 2015-10-02 | 2017-04-06 | Robert Bosch Gmbh | Method for joining components by means of an absorbent coating |
DE102016206612A1 (en) * | 2016-04-19 | 2017-08-03 | Continental Automotive Gmbh | Method for joining a metallic molding with a thermoplastic molding |
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EP1669186A1 (en) * | 2003-10-02 | 2006-06-14 | Ube Industries, Ltd. | Material for laser welding and method for laser welding |
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CN111070699A (en) * | 2018-11-27 | 2020-04-28 | 艾默生科技有限公司布兰森超声分公司 | Waveguide section for plastic welding, device for plastic welding, welding method and method for producing a waveguide section |
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