EP1554077A1 - Dispositif de soudure par rayonnement laser - Google Patents

Dispositif de soudure par rayonnement laser

Info

Publication number
EP1554077A1
EP1554077A1 EP03750344A EP03750344A EP1554077A1 EP 1554077 A1 EP1554077 A1 EP 1554077A1 EP 03750344 A EP03750344 A EP 03750344A EP 03750344 A EP03750344 A EP 03750344A EP 1554077 A1 EP1554077 A1 EP 1554077A1
Authority
EP
European Patent Office
Prior art keywords
gradient index
index lens
optical unit
joining
shaping optical
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Withdrawn
Application number
EP03750344A
Other languages
German (de)
English (en)
Inventor
Gabriele Eberhardt
Hans-Ulrich Zühlke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenoptik Automatisierungstechnik GmbH
Original Assignee
Jenoptik Automatisierungstechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jenoptik Automatisierungstechnik GmbH filed Critical Jenoptik Automatisierungstechnik GmbH
Publication of EP1554077A1 publication Critical patent/EP1554077A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a device for quasi-simultaneous welding of two plastic parts along a joining contour by means of laser radiation.
  • a joining contour is to be understood as the geometry of the welding between the joining surfaces of the parts (workpiece) to be welded.
  • the joining contour can in principle be punctiform, linear or flat and lie in space or only in one plane. Depending on the parts to be welded, it can vary in size from just a few millimeters to several meters.
  • Quasi-simultaneous welding is to be understood to mean that the joining surfaces in the area of the joining contour are heated, plasticized and welded to one another with a setting path almost simultaneously by an energy beam repeatedly sweeping over the joining contour before the plastic parts to be welded are melted.
  • the devices of the same type known from the prior art are more or less well suited to welding the joining surfaces to be connected with a reasonable amount of time and machine technology.
  • Devices known from the prior art, with which extensive joining contours are to be welded comprise, in addition to a laser radiation source, a scanning device which basically consists of at least one beam-shaping optical element and one beam-deflecting optical element.
  • the beam-shaping element has the task of concentrating the beam on the workpiece surface.
  • the beam is guided in one or two dimensions over the workpiece surface via the beam-deflecting elements that are connected to a drive.
  • Conventional converging lenses or collectively acting lens arrangements are used as beam-shaping optical elements.
  • Polygon mirrors, galvanometer mirrors and prisms which are driven in a swinging or rotating manner are used in particular as beam-deflecting optical elements.
  • the scanning device is arranged at a fixed distance from the workpiece surface, only limited scanning areas can be scanned on the workpiece surface.
  • the beam-deflecting elements are also not necessary if the joining contour is a line and the light source is imaged as a line on the workpiece surface, for example by means of a cylindrical lens, in order to simultaneously weld the workpiece.
  • the beam is usually directed onto the workpiece surface via a mirror-articulated arm guided by means of a robot arm. Simultaneous or quasi-simultaneous welding of the entire joining contour is therefore not possible.
  • Combinations of mirror articulated arm and scanning device are also known.
  • the scanning movement can then be both a superimposed movement of the beam-deflecting elements of the scanning device and the robot arm, as well as an exclusive movement of the beam-deflecting elements of the device, with which scanning areas arranged next to one another are scanned, for which the device is successively positioned by the robot arm.
  • simultaneous or quasi-simultaneous welding of the entire joining contour is not possible.
  • the devices known from the prior art for quasi-simultaneous welding, consisting of beam-shaping and beam-deflecting elements are complex in terms of device technology and design and generally require a large amount of space. They are therefore not suitable for being arranged side by side in order to weld a larger joining contour quasi-simultaneously by simultaneous scanning of adjacent part joining contours.
  • Known devices for simultaneous welding are less space-consuming since they do not require a mechanism for generating a relative movement. However, they require a high adjustment effort if they are to be arranged next to one another to form a more complex device in order to weld a larger joining contour consisting of several partial joining surfaces. Adjustments mean that overlapping areas are exposed to twice the amount of radiation or that areas of the joint surface are not welded.
  • the invention has for its object to provide a device for quasi-simultaneous welding of joining contours or partial joining contours, which can be produced with little technical equipment and design, requires significantly less space and which is suitable to be arranged several times next to one another, simultaneously welding several partial joining contours that form a larger, closed joining contour.
  • the gradient index lens is moved relative to the exit surface of the optical fiber, the gradient index lens being designed such that a small deflection (displacement path) of the gradient index lens with respect to the optical fiber is sufficient to produce a large deflection (welding path) of the beam on the workpiece surface.
  • the required relative movement between the gradient index lens and the exit surface of the optical fiber can also be achieved by deflecting the optical fiber or by a combined movement of the optical fiber and the served index lens.
  • a device according to the invention is considerably smaller and easier to carry out than conventional devices for simultaneous laser welding. This has the particular advantage that several devices of this type can be arranged side by side to form a more complex device in order to be able to weld larger joining contours.
  • Fig. 1 principle arrangement for a device with a gradient index lens and a movement unit
  • Fig. 2 principle arrangement for a device with a gradient index lens and two movement units
  • Fig. 3 basic arrangement for a device with two gradient index lenses
  • FIG. 5 shows a perspective view of an assembly of a device according to FIG. 4
  • FIG. 1 shows a first exemplary embodiment of a device according to the invention.
  • it comprises a laser diode 1, an optical fiber 2, a first gradient index lens 4.1, a first piezo actuator 6.1 (also called an actuator) and a workpiece holder, not shown here, in which the parts to be welded (hereinafter referred to as workpiece) are held become.
  • the radiation emitting from the laser diode 1 is coupled directly into the optical fiber 2.
  • the exit surface 3 of the optical fiber 2 is fixed at a defined working distance 7 from the first gradient index lens 4.1.
  • the exit surface 3 and a first The flat surface of the first gradient index lens 4.1 also lies in mutually parallel planes during the relative movement.
  • the center of the surface of the exit surface 3 lies on the optical axis of the first gradient index lens 4.1.
  • the first gradient index lens 4.1 is designed such that its object plane lies in the plane of the exit surface 3, the working distance 7 being as small as possible, less than 0.3 mm, so that the circle of confusion of the beam impinging on the first plane surface is determined by the aperture of the optical fiber 2 is significantly smaller in diameter than the diameter of the first gradient index lens 4.1.
  • This size ratio determines the possible range of motion, that is to say the first gradient index lens 4.1 and the exit surface 3 can only be displaced relative to one another to the extent that the circle of confusion also completely strikes the first plane surface of the first gradient index lens 4.1.
  • the first gradient index lens 4.1 is also designed such that it maps the exit surface 3 onto the workpiece surface 5 with a large imaging scale. The larger the imaging scale is selected, the smaller the deflection path (adjustment path) by which the first gradient index lens 4.1 has to be deflected in order to bring about a large deflection (welding path) of the beam on the workpiece surface 5.
  • the first piezo actuator 6.1 In order to deflect the first gradient index lens 4.1 with respect to the exit surface 3, the latter is connected to the first piezo actuator 6.1, which moves the first gradient index lens 4.1 back and forth within its possible travel range with a frequency of up to 100 Hz. This can lead to different positions via the displacement path, ie static and dynamic positioning in the area of the entire displacement path is possible.
  • a displacement path (amplitude) of less than 500 ⁇ m is sufficient to generate lines up to a length of 20 mm, for example if an optical fiber 2 with a Diameter of 50 ⁇ m is increased by 40 times. It is particularly advantageous here in comparison with a conventional converging lens that the images which are remote from the axis do not have such a strong distortion, ie the focal spot of approx. 2 mm which arises on the workpiece surface 5 remains constant in diameter on the generated line.
  • a focal spot size of approx. 1 mm is more favorable for the energy input into the workpiece. It is achieved, for example, for an optical fiber 2 with a diameter of 50 ⁇ m with an enlargement of 20 and a displacement of approximately 1500 ⁇ m.
  • the welding path can then be up to 30 mm, i.e. the joining contour can be up to 30 mm x 30 mm.
  • a device is particularly suitable for performing spot welds along a straight line shorter than 30 mm or for performing a weld seam with a joining contour equal to a straight line shorter than 30 mm.
  • a second exemplary embodiment, not shown in the drawings, is to differ from the first by an additional adjusting device 9.
  • the workpiece distance 8 (distance between the workpiece surface 5 in the undeflected state of the first gradient index lens 4.1 and the second plane surface of the first gradient index lens 4.1) can be changed by means of the adjusting device 9 , whereby the exit surface 3 is imaged out of focus on the workpiece surface 5.
  • This actuating device 9 is also useful when the workpiece surface 5 is not a flat surface. The actuating device 9 then ensures a constant workpiece distance 8. As far as the deviations of the workpiece surface 5 from one plane However, within the depth of field range, an adjustment of the workpiece distance 8 is not necessary.
  • FIG. 2 shows a third exemplary embodiment. It should differ from the second one by adding a second piezo actuator 6.2.
  • This second piezo actuator 6.2 also acts on the first gradient index lens 4.1 and enables their deflection in the direction perpendicular to the deflection direction of the first piezo actuator 6.1. By superimposing the two deflection movements, both an arbitrarily shaped line can be generated and a surface can be scanned.
  • a first and a second gradient index lens 4.1, 4.2 are to be used.
  • the two gradient index lenses 4.1, 4.2 fulfill the same function as they were fulfilled by only one first gradient index lens 4.1 in the exemplary embodiments 1-3.
  • FIG. 4 shows a plan view of a device opened on both sides, in which, for the sake of clarity, the optical fiber 2, the electrical feeds to the piezoelectric positions 6.1, 6.2 and the laser diode 1 have not been shown.
  • Fig. 5 shows a perspective view of a boom 10, delimited by the end plate 11 and the bearing plate 12, in connection with the piezo actuators 6.1, 6.2.
  • This assembly in conjunction with the first gradient index lens 4.1, represents the core of the device.
  • On a base plate 13 three identical, prestressed piezo actuators 6.1, 6.2 are connected in parallel to one another, each with one end, while the respective second end of the Piezo actuator 6.1, 6.2 in connection with the bearing plate 12 stands, which is aligned parallel to the base plate 13 in the non-activated state.
  • the third piezo actuator 6.3 only has the function of a spacer with the same thermal expansion coefficient as the acting piezo actuators 6.1, 6.2.
  • connection of the second end of the third piezo actuator 6.3 to the bearing plate 12 is formed by a swivel joint which defines a pivot point about which the bearing plate 12 is pivoted when the piezo actuators 6.1, 6.2 are activated.
  • the deflection of the bearing plate 12 is determined by the travel of the piezo elements 6.1 and 6.2, which abut the bearing plate 12 with their second end.
  • the bearing plate 12 is an end piece of a cantilever 10.
  • the length of the cantilever 10 is determined by the desired distance from the end plate 11, which is a second 'end piece of the cantilever 10 and to which the second gradient index lens 4.2 is fixed , to the bearing plate 12 in order to translate the travel of the piezo actuators 6.1, 6.2 so that displacement paths for the first gradient index lens 4.1 result in a desired length.
  • a total length of the boom 10 of, for example, approximately 15 cm, an adjustment path of 50 ⁇ m can be translated into a displacement path of 1.5 mm.
  • the boom 10 must be a rigid, torsion-resistant and as light as possible structure.
  • FIG. 4 On the circumference of the base plate 13, two housing angles 14, which enclose the described assembly, are fastened via connecting elements 16, of which a first housing angle 14 is shown in FIG. 4.
  • the tubular housing formed by the housing angles is closed at one end immediately below the end plate 11 by a cover glass 20. The other end protrudes beyond the base plate 13 and is closed by a cover plate 21.
  • the cover plate 21, like the base plate 13, has openings through which power lines (not shown in the drawing) are led into the interior of the housing to the piezoelectric positions 6.1, 6.2.
  • a fiber coupling 17 is guided through the cover plate 21 and firmly connected to it.
  • the fiber coupling 17 serves, on the one hand, to mount the optical fiber 2, which is not shown in FIG. 4, in order to position it in relation to the housing and, on the other hand, enables the optical fiber 2 to be practically realized by two fiber pieces, namely a fiber piece running inside the housing and a fiber piece which is located outside the housing and into which the radiation from the laser diode 1 is coupled.
  • the free end of the optical fiber 2 located in the housing is held in a fiber plug 18 directly above the first gradient index lens 4.1, which is rigidly connected to the housing via a fiber plug holder 19.
  • the piezo actuators 6.1, 6.2 are activated, the first gradient index lens 4.1 is now shifted below the exit surface 3 of the optical fiber 2 (correct: pivoted).
  • a device is intended to comprise a plurality of devices, as were shown in exemplary embodiments 1-5.
  • the exemplary embodiments 1-5 have in common that a joining contour can be generated quasi-simultaneously, the extent of which is determined by the deflection area which the beam of rays can sweep over the workpiece surface 5.
  • the advantage of the invention is particularly clear. Due to the small space requirement, which is essentially determined only by the piezo actuators 6.1, 6.2, a plurality of modules can be arranged close to one another, which can functionally match one another and simultaneously generate a larger joining contour, composed of individual partial joining contours.
  • the beam-shaping optical unit consisting of one or even two gradient index lenses 4.1, 4.2, images the exit surface 3 of the optical fiber 2 on the workpiece surface 5.
  • the gradient index lenses 4.1, 4.2 can be dimensioned and arranged to the exit surface 3 such that the beam is collimated or focused on the workpiece surface 5.
  • piezo actuators 6.1, 6.2 instead of the piezo actuators 6.1, 6.2, other linear movement units known from the prior art, such as capacitive actuators or electromagnetic actuators, can also be used.
  • the device according to the invention can also be used in connection with a robot arm. Compared to conventional devices of the same type, their low weight is of particular advantage here.
  • Spot welds can also be generated simultaneously at a fixed distance from one another, positioned with one another with the same number of devices as how welding spots are to be generated. Such devices then do not require any linear movement units.
  • first housing bracket 15 screw connections for connecting the housing bracket

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un dispositif au moyen duquel les faces de jonction adjacentes de deux parties en matière plastique (pièce à usiner) peuvent être soudées l'une à l'autre par rayonnement laser de façon quasi-simultanée au niveau d'un contour de jonction. Le faisceau de rayons émis par une diode laser (1) est injecté, par l'intermédiaire d'une fibre optique (2), dans une première lentille à gradient d'indice (4.1) concentrant le faisceau de rayons sur la surface (5) de la pièce à usiner, ladite première lentille à gradient d'indice (4.1) étant déviée par rapport à la surface de sortie (3) de la fibre optique (2). Ainsi, le faisceau de rayons balaye un contour de jonction sur la surface (5) de la pièce à usiner afin de chauffer, ramollir et souder cette pièce de façon quasi-simultanée le long dudit contour de jonction. Plusieurs dispositifs de ce type peuvent être regroupés pour former un dispositif complexe permettant de soumettre audit rayonnement des contours de jonction de dimension supérieure de façon simultanée et quasi-simultanée.
EP03750344A 2002-10-01 2003-09-10 Dispositif de soudure par rayonnement laser Withdrawn EP1554077A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10246198A DE10246198A1 (de) 2002-10-01 2002-10-01 Anordnung zum Schweißen mittels Laserstrahlung
DE10246198 2002-10-01
PCT/DE2003/003026 WO2004030857A1 (fr) 2002-10-01 2003-09-10 Dispositif de soudure par rayonnement laser

Publications (1)

Publication Number Publication Date
EP1554077A1 true EP1554077A1 (fr) 2005-07-20

Family

ID=32038236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750344A Withdrawn EP1554077A1 (fr) 2002-10-01 2003-09-10 Dispositif de soudure par rayonnement laser

Country Status (5)

Country Link
US (1) US20060032839A1 (fr)
EP (1) EP1554077A1 (fr)
AU (1) AU2003269704A1 (fr)
DE (2) DE10246198A1 (fr)
WO (1) WO2004030857A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878185B1 (fr) 2004-11-22 2008-11-07 Sidel Sas Procede de fabrication de recipients comprenant une etape de chauffe au moyen d'un faisceau de rayonnement electromagnetique coherent
DE102004056782A1 (de) * 2004-11-24 2006-06-01 Lpkf Laser & Electronics Ag Verfahren zum Laserdurchstrahlschweissen von Kunststoffen
JP2007245189A (ja) * 2006-03-16 2007-09-27 Tdk Corp 接合装置及びそのノズルユニット
DE102006058997A1 (de) * 2006-12-14 2008-06-19 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zum Laserstumpfschweißen von Kunststoffbauteilen
FR2913210B1 (fr) 2007-03-02 2009-05-29 Sidel Participations Perfectionnements a la chauffe des matieres plastiques par rayonnement infrarouge
FR2917005B1 (fr) 2007-06-11 2009-08-28 Sidel Participations Installation de chauffage des corps de preformes pour le soufflage de recipients
CN104166234A (zh) * 2014-08-13 2014-11-26 合肥鑫晟光电科技有限公司 激光烧结设备用激光扫描头及激光烧结设备
EP3517241A1 (fr) * 2018-01-29 2019-07-31 Bystronic Laser AG Dispositif optique permettant de mettre en forme un faisceau d'ondes électromagnétiques et son utilisation, dispositif de traitement de faisceau et son utilisation et procédé de traitement de faisceau
CN113118682B (zh) * 2019-12-30 2023-04-14 中核北方核燃料元件有限公司 一种用于自动端板焊接的分体棒束夹具

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612815A (en) * 1970-01-16 1971-10-12 Smith Corp A O Electron beam apparatus
US4914272A (en) * 1987-09-14 1990-04-03 Sony Corporation Laser beam soldering apparatus and soldering method using the same
JP2663560B2 (ja) * 1988-10-12 1997-10-15 日本電気株式会社 レーザ加工装置
JP2843083B2 (ja) * 1990-01-11 1999-01-06 株式会社アマダ レーザ溶接方法
CA2064004A1 (fr) * 1990-05-23 1991-11-24 Shigeki Fujinaga Robot a laser et sa methode de commande et deflecteur de faisceau lumineux et generateur de signaux de commande connexes
US5229571A (en) * 1991-07-08 1993-07-20 Armco Steel Co., L.P. High production laser welding assembly and method
DE4234342C2 (de) * 1992-10-12 1998-05-14 Fraunhofer Ges Forschung Verfahren zur Materialbearbeitung mit Laserstrahlung
DE19603111C2 (de) * 1996-01-29 2002-08-14 Deutsch Zentr Luft & Raumfahrt Lasersystem
FR2762244B1 (fr) * 1997-04-21 1999-07-16 Peugeot Appareil de traitement par laser de la paroi de cylindre d'un moteur a combustion interne
DE19832168A1 (de) * 1998-07-17 2000-01-20 Lisa Laser Products Ohg Fuhrbe Verfahren und Vorrichtung zum Schweißen von thermoplastischen Kunststoffen mit Laserlicht
JP3395142B2 (ja) * 1998-08-31 2003-04-07 住友重機械工業株式会社 光学系駆動装置
DE19949198B4 (de) * 1999-10-13 2005-04-14 Myos My Optical Systems Gmbh Vorrichtung mit mindestens einer mehrere Einzel-Lichtquellen umfassenden Lichtquelle
EP1219381A1 (fr) * 2000-12-27 2002-07-03 Siemens Aktiengesellschaft Méthode de soudage au laser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004030857A1 *

Also Published As

Publication number Publication date
DE10246198A1 (de) 2004-04-22
AU2003269704A1 (en) 2004-04-23
WO2004030857A1 (fr) 2004-04-15
US20060032839A1 (en) 2006-02-16
DE10393890D2 (de) 2005-08-25

Similar Documents

Publication Publication Date Title
DE10193737B4 (de) Laserbearbeitungsvorrichtung
DE19823934A1 (de) Vorrichtung zum Koppeln einer Lichtquelle mit einer Lichtleitfaser
DE102007018400B4 (de) Optisches System für einen Lasermaterialbearbeitungskopf
DE102014210486A1 (de) Verfahren und Vorrichtung zum Verschweißen zweier Fügepartner aus thermoplastischen Kunststoffen entlang einer Schweißnaht mittels Laser
DE10027148A1 (de) Vorrichtung zur Bearbeitung eines Werkstückes mittels eines fokussierbaren Lasers
WO2004030857A1 (fr) Dispositif de soudure par rayonnement laser
DE102012012780A1 (de) Parellelkinematisches Spiegel-Ablenksystem mit doppelkardanischer Aufhängung
DE202017101590U9 (de) Vorrichtung zur Führung eines Laserstrahls auf ein Werkstück
WO2012143181A2 (fr) Dispositif de soudage par faisceau laser et procédé de soudage par faisceau laser
DE2942041C2 (fr)
DE19623270A1 (de) Adaptives optisches Abbildungssystem zur Abbildung eines von einem Halbleiterlaser emittierten Strahlenbündels auf eine Abbildungsfläche
DE102016008184B4 (de) Messvorrichtung und Verfahren zum Überwachen eines Bearbeitungsprozesses zur Materialbearbeitung eines Werkstücks unter synchroner Ansteuerung eines Bearbeitungsscanners und eines Referenzarmscanners sowie System zum Bearbeiten und Überwachen eines Werkstücks mit einer Messvorrichtung
DE102019204032B4 (de) Vorrichtung zur Erzeugung einer räumlich modulierbaren Leistungsdichteverteilung aus Laserstrahlung
EP1647370B1 (fr) Robot articulé avec système de guidage de rayon laser comprenant un téléscope
DE102015200795B3 (de) Anordnung zur Bestrahlung einer Objektfläche mit mehreren Teilstrahlen ultrakurz gepulster Laserstrahlung
EP2599574B1 (fr) Optique laser doté d'un guidage de soudure passif
DE102019108681A1 (de) Vorrichtung und Verfahren zur Erzeugung eines Doppel- oder Vielfachspots in der Lasermaterialbearbeitung
DE102010049771A1 (de) Risley-Prismenpaar mit Piezoantrieb
WO2007121863A1 (fr) Microscope à balayage laser et procédé de microscopie à balayage laser
EP3326021B1 (fr) Agencement et procédé pour la déviation bidimensionnelle de rayonnement optique
DE10130199B4 (de) Scannervorrichtung für einen Leistungslaser
DE102010027540B4 (de) Strahlvereinigungsvorrichtung
DE4135459A1 (de) Optische vorsatzeinrichtung fuer laser zur erzeugung einer linie variabler laenge und breite
DE102022107324B4 (de) Laserbearbeitungskopf mit Auslenkvorrichtungen
DE102019212818B4 (de) Abtastmodul zur zweidimensionalen Abtastung einer Zielebene mit mehreren Laserstrahlen

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20050426

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
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: 20100401