US20050121424A1 - Optical horned lightpipe or lightguide - Google Patents

Optical horned lightpipe or lightguide Download PDF

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Publication number
US20050121424A1
US20050121424A1 US10/729,048 US72904803A US2005121424A1 US 20050121424 A1 US20050121424 A1 US 20050121424A1 US 72904803 A US72904803 A US 72904803A US 2005121424 A1 US2005121424 A1 US 2005121424A1
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US
United States
Prior art keywords
light
transmitting device
light transmitting
laser
lobe
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.)
Abandoned
Application number
US10/729,048
Other languages
English (en)
Inventor
Scott Caldwell
Hugh McNair
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.)
Branson Ultrasonics Corp
Original Assignee
Branson Ultrasonics Corp
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 Branson Ultrasonics Corp filed Critical Branson Ultrasonics Corp
Priority to US10/729,048 priority Critical patent/US20050121424A1/en
Assigned to BRANSON ULTRASONICS CORPORATION reassignment BRANSON ULTRASONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CALDWELL, SCOTT, MCNAIR, HUGH T.
Priority to CNA2004100898463A priority patent/CN1640610A/zh
Priority to DE102004058221A priority patent/DE102004058221A1/de
Priority to CH01992/04A priority patent/CH697509B1/de
Publication of US20050121424A1 publication Critical patent/US20050121424A1/en
Priority to US11/446,370 priority patent/US7723640B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • 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
    • 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
    • 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
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings

Definitions

  • the present invention relates generally to laser welding and, more particularly, relates to lightpipes or lightguides having an optical horn.
  • Laser welding is commonly used to join plastic or resinous parts, such as thermoplastic parts, at a welding zone.
  • plastic or resinous parts such as thermoplastic parts
  • An example of such use of lasers can be found in U.S. Pat. No. 4,636,609, which is expressly incorporated herein by reference.
  • TTIr welding employs an infrared laser capable of producing infrared radiation that is directed by lenses, diffractive optics, fiber optics, waveguides, lightpipes or lightguides through a first plastic part and into a second plastic part.
  • This first plastic part is often referred to as the transmissive piece, since it generally permits the laser beam from the laser to pass therethrough.
  • the second plastic part is often referred to as absorptive piece, since this piece generally absorbs the radiative energy of the laser beam to produce heat in the welding zone. This heat in the welding zone causes the transmissive piece and the absorptive piece to be melted and, with intimate contact, welded together.
  • the infrared laser light that exits the lightguide or lightpipe is often outwardly dispersed in a fan or cone shape as it passes through the transmissive piece.
  • This dispersion of light may lead to oversized welding zones. That is, as the light exits the lightpipe or lightguide, the light fans outwardly and impacts a larger area of the absorptive piece and transmissive piece interface. This larger area is consequently heated causing a larger welding zone.
  • a laser welding apparatus having an advantageous construction and method of using the same.
  • the laser welding apparatus includes a laser source outputting a laser beam and a light transmitting device, chosen from the group consisting essentially of a lightpipe and a lightguide, positioned downstream from the laser source.
  • the light transmitting device transmits the laser beam therethrough.
  • An optical device receives the laser beam exiting the light transmitting device and is operable to converge light lobes exiting the light transmitting device to define a final beam width.
  • the final beam width being narrower than a beam width exiting the light transmitting device.
  • FIG. 1 is a schematic view illustrating a TTIr welding apparatus employing a lightpipe according to the prior art
  • FIG. 2 is a schematic view illustrating conventional light distribution exiting the TTIr welding apparatus illustrated in FIG. 1 ;
  • FIG. 3 is a schematic view illustrating a TTIr welding apparatus employing a lightpipe and optical horn according to the principles of the present invention, including the resultant light distribution;
  • FIG. 4 is a schematic view illustrating a TTIr welding apparatus employing a lightguide and optical horn according to the principles of the present invention, including the resultant light distribution;
  • FIG. 5 is a schematic view illustrating the TTIr welding apparatus employing a lightpipe and optical horn according to the principles of the present invention, including the resultant weld zone.
  • TTIr welding systems 100 often include a laser 102 outputting a laser light to a conventional lightpipe 104 .
  • This laser light transmitted along conventional lightpipe 104 and through a transmissive piece 106 .
  • the laser light finally impacts an interface between transmissive piece 106 and an absorptive piece 108 at a weld zone 110 .
  • this laser light often fans outwardly as it exits conventional lightpipe 104 and may further fan outwardly due to the optical effects of transmissive piece 106 . Consequently, weld zone 110 is substantially larger than the exit end of conventional lightpipe 104 due to this effect.
  • the angular distribution of laser light exiting conventional lightpipe 104 can be seen. Specifically, as laser light enters conventional lightpipe 104 , it inherently has a certain amount of angular distribution. This angular distribution is exaggerated by the tapered sides of conventional lightpipe 104 . Therefore, as the laser light exits conventional lightpipe 104 , the angular distribution is increased causing a larger than desired weld zone 110 . Still referring to FIG. 2 , the distribution typically forms a central lobe 112 and a pair of side lobes 114 .
  • TTIr welding system 12 may include an optional fiber optic bundle 14 comprised of a plurality of optical fibers generally arranged in a circular pattern capable of carrying or transmitting radiative energy in the form of a laser beam therethrough.
  • Fiber optic bundle 14 is operably coupled to a laser source 18 , such as an infrared laser, according to known principles.
  • lightpipe or lightguide assembly 10 comprises a lightpipe 20 ( FIG. 3 ) or a lightguide 22 ( FIG. 4 ). With particular reference to FIG. 3 , lightpipe assembly 10 further comprises bounce planes 24 disposed at an exit end 26 of lightpipe 20 . Bounce planes 24 form an optical horn 25 that serves to “bounce” or otherwise reflect the laser light exiting exit end 26 of lightpipe 20 such that side lobes 114 are generally aligned with central lobe 112 to form a combined light lobe 28 . As can be seen in FIGS. 2 and 3 , combined light lobe 28 ( FIG. 3 ) of the present invention is considerably narrower than the conventional distribution ( FIG. 2 ).
  • Lightpipe 20 and bounce planes 24 are preferably made of a dielectric that uses total internal reflection (TIR) and/or mirrored surface to direct light therethrough.
  • lightguide assembly 10 further comprises bounce planes 36 disposed at an exit end 38 of lightguide 22 .
  • Bounce planes 36 form an optical horn 39 that serves to “bounce” or otherwise reflect the laser light exiting exit end 38 of lightguide 22 such that side lobes 114 are generally aligned with central lobe 112 to form a combined light lobe 40 .
  • combined light lobe 40 FIG. 3
  • combined light lobe 40 is considerably narrower than the conventional distribution ( FIG. 2 ).
  • combined light lobe 40 is transmitted through transmissive piece 30 ( FIG. 5 ) and impacts absorptive piece 32 to define a narrower weld zone 34 compared to conventional weld zone 110 .
  • lightguide 22 and bounce planes 36 employ a void having mirrored walls to conduct light therethrough.
  • the present invention enables a laser welding apparatus, which employs a lightpipe or lightguide, to produce a substantially narrower laser welding beam capable of producing a narrower weld zone compared to conventional laser welding apparatuses. Consequently, laser welding apparatuses using lightpipes or lightguides may now be used for a greater range of delicate welding operations and/or improved weld features. Additionally, the reflecting of the side light lobes into a concentrated combined light lobe provided improved welding efficiency.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)
  • Light Guides In General And Applications Therefor (AREA)
US10/729,048 2003-12-05 2003-12-05 Optical horned lightpipe or lightguide Abandoned US20050121424A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/729,048 US20050121424A1 (en) 2003-12-05 2003-12-05 Optical horned lightpipe or lightguide
CNA2004100898463A CN1640610A (zh) 2003-12-05 2004-10-26 具光学喇叭的光管或光导
DE102004058221A DE102004058221A1 (de) 2003-12-05 2004-12-02 Lichtleiter oder Lichtwellenleiter mit einem optischen Trichter
CH01992/04A CH697509B1 (de) 2003-12-05 2004-12-02 Laserschweisseinrichtung, bestehend aus einem Lichtleiter oder einem Lichtwellenleiter mit einem optischen Trichter.
US11/446,370 US7723640B2 (en) 2003-12-05 2006-06-02 Optical horned lightpipe or lightguide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/729,048 US20050121424A1 (en) 2003-12-05 2003-12-05 Optical horned lightpipe or lightguide

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/446,370 Continuation-In-Part US7723640B2 (en) 2003-12-05 2006-06-02 Optical horned lightpipe or lightguide

Publications (1)

Publication Number Publication Date
US20050121424A1 true US20050121424A1 (en) 2005-06-09

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US10/729,048 Abandoned US20050121424A1 (en) 2003-12-05 2003-12-05 Optical horned lightpipe or lightguide
US11/446,370 Active 2026-09-27 US7723640B2 (en) 2003-12-05 2006-06-02 Optical horned lightpipe or lightguide

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CN (1) CN1640610A (de)
CH (1) CH697509B1 (de)
DE (1) DE102004058221A1 (de)

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US20070000887A1 (en) * 2005-06-29 2007-01-04 Scott Caldwell Method for scan welding or marking through a waveguide and waveguide therefor
US20080169277A1 (en) * 2007-01-16 2008-07-17 Illinois Tool Works Inc. Lighted welding torch
US20080197116A1 (en) * 2007-02-20 2008-08-21 Illinois Tool Works Inc. Tig welding system and method
US20080272521A1 (en) * 2007-05-04 2008-11-06 Branson Ultransonics Corporation Infrared plastic welding with recircualtion of unabsorbed infrared laser light to increase absorption of infrared laser light
KR20150112898A (ko) * 2014-03-28 2015-10-07 오토모티브 라이팅 이탈리아 에스.피.에이 자동차 라이트의 레이저 용접 방법 및 이에 의해 제조된 자동차 라이트
KR20150146418A (ko) * 2014-06-19 2015-12-31 오토모티브 라이팅 이탈리아 에스.피.에이 자동차 등의 동시 레이저 용접 방법 및 관련 자동차 등
US20160348866A1 (en) * 2015-06-01 2016-12-01 Automotive Lighting Italia S.P.A. A Socio Unico Method of making a vehicle light and related vehicle light
CN106772972A (zh) * 2015-11-19 2017-05-31 刘伟 一种拼合式具反射柄的固定的透射-反射型阳光传输装置
CN109910315A (zh) * 2018-02-28 2019-06-21 艾默生科技有限公司布兰森超声分公司 用于塑料焊接的波导和装置、焊接方法和波导的制造方法
CN111757804A (zh) * 2018-01-22 2020-10-09 必能信超声公司 用于窄型同步激光塑料焊接的波导
US11865792B2 (en) 2020-02-21 2024-01-09 Heineken Supply Chain B.V. Method for joining a fluid conduit and a connection hub

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US20070047932A1 (en) * 2005-08-31 2007-03-01 Branson Ultrasonics Corporation Waveguide for plastics welding using an incoherent infrared light source
GB201016046D0 (en) * 2010-09-24 2010-11-10 Renishaw Plc A method of forming an optical device
DE102011101029A1 (de) 2011-05-10 2012-11-15 Rainer Schmidt Sonnenlichtenergiemodul
US9067278B2 (en) 2013-03-29 2015-06-30 Photon Automation, Inc. Pulse spread laser
ES2818627T3 (es) 2014-05-30 2021-04-13 Marelli Automotive Lighting Italy Spa Método de soldadura de láser de una luz de automóvil
US11305380B2 (en) 2018-01-22 2022-04-19 Branson Ultrasonics Corporation Method of determining intensity of laser light delivered to a weld area by laser delivery bundles
DE102018112829A1 (de) 2018-05-29 2019-12-05 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co. Ohg Wellenleiteranordnung eines Laserschweißsystems, entsprechendes Laserschweißsystem sowie dazugehöriges Schweißverfahren
ES2917024T3 (es) 2018-11-27 2022-07-06 Branson Ultraschall Niederlassung Der Emerson Tech Gmbh & Co Ohg Segmento de guía de ondas para soldadura de plástico, disposición para soldadura de plástico, método de soldadura, y método de fabricación de un segmento de guía de ondas
EP4382284A1 (de) 2022-12-06 2024-06-12 Branson Ultraschall Niederlassung der Emerson Technologies GmbH & Co. oHG Wellenleiter zum kunststoffschweissen, anordnung und schweissverfahren mit dem wellenleiter sowie herstellungsverfahren des wellenleiters

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KR20150146418A (ko) * 2014-06-19 2015-12-31 오토모티브 라이팅 이탈리아 에스.피.에이 자동차 등의 동시 레이저 용접 방법 및 관련 자동차 등
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US10781990B2 (en) * 2015-06-01 2020-09-22 Marelli Automotive Lighting Italy S.p.A. Method of making a vehicle light and related vehicle light
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CN111757804A (zh) * 2018-01-22 2020-10-09 必能信超声公司 用于窄型同步激光塑料焊接的波导
US10814560B2 (en) * 2018-01-22 2020-10-27 Branson Ultrasonics Corporation Waveguide for narrow simultaneous laser plastics welding
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CN109910315A (zh) * 2018-02-28 2019-06-21 艾默生科技有限公司布兰森超声分公司 用于塑料焊接的波导和装置、焊接方法和波导的制造方法
US11318687B2 (en) 2018-02-28 2022-05-03 BRANSON Ultraschall Niederlassung der Emerson Technolocles GmbH & Co. OHG Waveguide for plastic welding, arrangement for plastic welding, a welding method as well as a manufacturing method of a waveguide
US11745438B2 (en) 2018-02-28 2023-09-05 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co. Ohg Waveguide for plastic welding, arrangement for plastic welding, a welding method as well as a manufacturing method of a waveguide
US11820083B2 (en) 2018-02-28 2023-11-21 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co. Ohg Waveguide for plastic welding, arrangement for plastic welding, a welding method as well as a manufacturing method of a waveguide
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CN1640610A (zh) 2005-07-20
US20060219675A1 (en) 2006-10-05

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