DE2841062A1 - Schweisstation fuer kunststoffolientrennschweissung mit laserstrahlung - Google Patents

Schweisstation fuer kunststoffolientrennschweissung mit laserstrahlung

Info

Publication number
DE2841062A1
DE2841062A1 DE19782841062 DE2841062A DE2841062A1 DE 2841062 A1 DE2841062 A1 DE 2841062A1 DE 19782841062 DE19782841062 DE 19782841062 DE 2841062 A DE2841062 A DE 2841062A DE 2841062 A1 DE2841062 A1 DE 2841062A1
Authority
DE
Germany
Prior art keywords
welding
laser radiation
laser
welding station
plastic separation
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.)
Granted
Application number
DE19782841062
Other languages
English (en)
Other versions
DE2841062B2 (de
DE2841062C3 (de
Inventor
Helmut Dr Helbig
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to DE2841062A priority Critical patent/DE2841062C3/de
Priority to GB7931753A priority patent/GB2031793B/en
Publication of DE2841062A1 publication Critical patent/DE2841062A1/de
Publication of DE2841062B2 publication Critical patent/DE2841062B2/de
Application granted granted Critical
Publication of DE2841062C3 publication Critical patent/DE2841062C3/de
Expired 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
    • B29C65/1635—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
    • B29C65/1654—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
    • 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
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • 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
    • B29C66/01—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • 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
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • 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
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1687—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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux

Landscapes

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

Description

• ι
32 933/li •Χ 12. Dezember 1978
Windmöller & Hölscher, 4540 Lengerich
Schweißstation für Kunststoffolientrennschweißung mit Laserstrahlung
Es ist bekannt, daß man mit Laserstrahlung feste Körper schneiden und schweißen kann.
Es ist bekannt, daß man Laserstrahlung mit optischen Mitteln ähnlich wie sichtbares Licht beeinflussen kann.
Es ist bekannt, daß Laserstrahlen infolge der kohärenten Eigenschaft zu sehr kleinen Lichtflecken gebündelt v/erden können, daß diese Strahlungspunkte sehr scharf begrenzt sind und deshalb die Schneideigenschaft eines scharfen Messers besitzen.
Es ist bekannt, daß die Materialschichten direkt neben dem Laserpunkt kalt bleiben, obwohl sie sich in unmittelbarer Nachbarschaft befinden.
030014/Π2
Bei der Trennschweißung von Kunststoffolien (Bild 1 und Bild 2) besteht die Aufgabe darin, daß der schneidende Laserstrahl gleichzeitig die Ränder zweier übereinanderliegender Folien miteinander verschweißen soll. Diese Forderung ist an sich ein Widerspruch, denn zum Schneiden braucht man einen sehr scharfen Strahl, wie eben beschrieben, zum Schweißen braucht man jedoch einen in der Intensität seitwärts verlaufenden Strahl. Nur auf diese Weise können die zu verschweißenden Partien begrenzt erwärmt und miteinander verschmolzen werden.
Es ist bekannt, daß durch eine spezielle Justierung des Laserstrahls (Bild 3) ein Brennfleck erzeugt werden kann, der in der Mitte hohe Intensität, an den Seiten geringere Intensität besitzt. Auf diese Weise könnte man eine Trennschweißung durchführen. Der Nachteil besteht darin, daß die Justierung sehr schwierig ist, besonders wenn der Strahl unter umständen nicht sichtbar ist.
Der neue Gedanke der Anmeldung geht davon aus, daß für das Schneiden und für das Schweißen.je ein getrennter Strahl verwendet wird (Bild 4). Durch Schräganordnung wird z.B. erreicht, daß Strahl 1 scharfgebündelt schneidet und Strahl 2 die Berührungsflächen der beiden Folien verschweißt.
Die beiden benötigen Laserstrahlen könnten durch Strahlungsteilung auch aus einer Laserquelle gewonnen werden (Bild 5). Ein Prisma spaltet den Hauptstrahl auf. Ein Teilstrahl wird durch optische Mittel nachträglich fokussiert.
030014/0209
Leerseite

Claims (3)

Patentansprüche
1. Schweißstation für Kunststoffolientrennschweißung mit
Laserstrahlung, dadurch gekennzeichnet, daß zwei Laserstrahlen gleichzeitig und am gleichen Angriffspunkt der Folie schneiden und schweißen.
Schweißstation nach Anspruch 1, dadurch gekennzeichnet, daß die Einwirkung der beiden Strahlen räumlich nebeneinander stattfindet und daß die in der Maschine bewegte Materialbahn die beiden Strahlungsbereiche nacheinander durchläuft.
3. Schweißstation nach Anspruch 1„ dadurch gekennzeichnet, daß die beiden benötigten Strahlen aus einer Laserquelle erzeugt und einzeln mit optischen Mitteln zum Schneiden oder zum Schweißen spezifiziert werden.
030014/0209
DE2841062A 1978-09-21 1978-09-21 Verfahren zum Trennschweißen von Kunststoffolien mit Laserstrahlen Expired DE2841062C3 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2841062A DE2841062C3 (de) 1978-09-21 1978-09-21 Verfahren zum Trennschweißen von Kunststoffolien mit Laserstrahlen
GB7931753A GB2031793B (en) 1978-09-21 1979-09-13 Method of cutting and welding plastics films with laser beams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2841062A DE2841062C3 (de) 1978-09-21 1978-09-21 Verfahren zum Trennschweißen von Kunststoffolien mit Laserstrahlen

Publications (3)

Publication Number Publication Date
DE2841062A1 true DE2841062A1 (de) 1980-04-03
DE2841062B2 DE2841062B2 (de) 1980-10-09
DE2841062C3 DE2841062C3 (de) 1981-07-16

Family

ID=6050031

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2841062A Expired DE2841062C3 (de) 1978-09-21 1978-09-21 Verfahren zum Trennschweißen von Kunststoffolien mit Laserstrahlen

Country Status (2)

Country Link
DE (1) DE2841062C3 (de)
GB (1) GB2031793B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231345A1 (de) * 1982-08-24 1984-03-01 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur herstellung einer messsonde
DE4011801A1 (de) * 1990-04-12 1991-10-17 Messer Griesheim Gmbh Verfahren zum thermischen beschichten von oberflaechen mit einem fluorpolymeren
EP0483569A1 (de) * 1990-10-29 1992-05-06 Fmc Corporation Vorrichtung zum Verschweissen von Kunststoffen
DE19814298A1 (de) * 1998-03-31 1999-10-07 Volkswagen Ag Verfahren zur Herstellung eines Kraftstofftanks

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642439A (en) * 1985-01-03 1987-02-10 Dow Corning Corporation Method and apparatus for edge contouring lenses
DE3621030C2 (de) * 1986-06-24 1995-01-05 Alkor Gmbh Verfahren und Vorrichtung zum Verschweißen und/oder Trennschweißen mittels Laserstrahlen
GB9009582D0 (en) * 1990-04-27 1990-06-20 Crosfield Electronics Ltd Method of shaping and bonding plastics materials
CN102112265A (zh) * 2008-08-07 2011-06-29 富士通株式会社 薄膜基材的加工方法以及薄膜基材的加工装置
DE102017207766A1 (de) * 2017-05-09 2018-11-15 Robert Bosch Gmbh Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
CN109207707A (zh) * 2018-03-21 2019-01-15 中国航空制造技术研究院 焊缝表面的激光冲击强化方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658682A1 (de) * 1976-12-15 1978-06-29 Bingley Ltd A J Einrichtung zum erzeugen und bewegen eines strahlungsfokus auf einem werkstueck

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658682A1 (de) * 1976-12-15 1978-06-29 Bingley Ltd A J Einrichtung zum erzeugen und bewegen eines strahlungsfokus auf einem werkstueck

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231345A1 (de) * 1982-08-24 1984-03-01 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur herstellung einer messsonde
DE4011801A1 (de) * 1990-04-12 1991-10-17 Messer Griesheim Gmbh Verfahren zum thermischen beschichten von oberflaechen mit einem fluorpolymeren
EP0483569A1 (de) * 1990-10-29 1992-05-06 Fmc Corporation Vorrichtung zum Verschweissen von Kunststoffen
DE19814298A1 (de) * 1998-03-31 1999-10-07 Volkswagen Ag Verfahren zur Herstellung eines Kraftstofftanks

Also Published As

Publication number Publication date
DE2841062B2 (de) 1980-10-09
GB2031793B (en) 1982-07-28
DE2841062C3 (de) 1981-07-16
GB2031793A (en) 1980-04-30

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