EP0540495A1 - Méthode pour couper du plastique renforcé par des fibres - Google Patents

Méthode pour couper du plastique renforcé par des fibres Download PDF

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Publication number
EP0540495A1
EP0540495A1 EP19920890221 EP92890221A EP0540495A1 EP 0540495 A1 EP0540495 A1 EP 0540495A1 EP 19920890221 EP19920890221 EP 19920890221 EP 92890221 A EP92890221 A EP 92890221A EP 0540495 A1 EP0540495 A1 EP 0540495A1
Authority
EP
European Patent Office
Prior art keywords
cutting
temperature
knife
workpiece
sonotrode
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Withdrawn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
EP19920890221
Other languages
German (de)
English (en)
Inventor
Gottfried Dipl.-Ing. Blaimschein
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.)
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Original Assignee
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
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 GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG filed Critical GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Publication of EP0540495A1 publication Critical patent/EP0540495A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/283—With means to control or modify temperature of apparatus or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/97—Miscellaneous

Definitions

  • the invention relates to a method for cutting workpieces made of plastics, in particular thermoplastics, fiber-reinforced plastics or the like, in which a cutting tool is subjected to a feed movement following the course of the cut, and to a device for performing this method.
  • thermoplastics and fiber-reinforced plastics pose considerable difficulties when it comes to cutting to size, since after hardening these plastics are distinguished by their particular strength, which is further increased by fiber reinforcement. Such a cutting has thus far mostly required contour milling, which is, however, quite complex and entails considerable machining losses.
  • the invention is therefore based on the object of eliminating these deficiencies and of specifying a method for rationally cutting plastics.
  • an appropriate device for performing this cutting process is to be created.
  • the invention solves this problem in that a knife vibrating with ultrasonic frequency is used as the cutting tool and the temperature of the workpiece at least in Cutting area of the knife is brought to a value dependent on the temperature behavior of the respective plastic.
  • An ultrasonic knife is in and of itself ideally suited for the clean cutting of common materials or for cutting through fiber structures, but without additional measures it would not be able to cut the hardened plastic as desired.
  • the plastic By heating or cooling, depending on the temperature behavior of the plastic, the plastic can be made perfectly cutable for the ultrasonic knife, for example, a thermoplastic becomes soft due to an increase in temperature and, for a thermoset, cooling can prevent temperature-related hardening, so that the Combination of ultrasonic cutting and temperature setting of the plastic ensures an efficient, exact cutting of workpieces of any plastic or also fiber-reinforced plastic with high efficiency and low machining losses.
  • the temperature of the workpiece in the cutting area can be set via the temperature of the knife or also via its own heat source, with either the knife temperature being preselected and regulated accordingly, or the workpiece being heated directly using a separate heat source.
  • Suitable control devices which compare the actual workpiece temperature as the actual value with the preselected setpoint, can control the knife temperature or the power of the heat source as required, so that the plastic has the most favorable cutting temperature at the time of cutting with the ultrasonic knife.
  • an ultrasonic cutting unit with a knife-equipped sonotrode or the like is provided according to the invention, which has a heating or Cooling device listened.
  • This heating or cooling device ensures the heating of the workpiece in the case of thermoplastics, in order to be able to soften them for the ultrasonic knife, and prevents undesired heating of the workpiece when cutting thermosets, so that thermosets can also be cut with the ultrasonic knife without any problems.
  • a heat radiator for example an infrared lamp, a hot and / or cooling air blower device or the like, is arranged upstream of the sonotrode in the feed direction.
  • the heat radiator Through this heat radiator, the heat rays of which are focused in the cutting area, or through the blower device, by means of which hot or cooling air jets can be directed onto the cutting area, the workpiece temperature in the cutting area can be directly influenced in a locally limited manner, which both the required heating of thermoplastics and allows the cooling of thermosets to be achieved without much equipment.
  • the heating or cooling devices can also be provided above and below the workpiece and, with a correspondingly synchronized forward movement, temper the cutting area on both sides to the extent of the knife advance.
  • an ultrasound cutting unit 1 with a knife-equipped sonotrode 2 is provided, which is rotatably mounted on a multi-axis-controlled robot arm 3 about two axes of rotation I, II that are normal to one another, which means that any number of them , also have feed movements following a spatial cut.
  • a heating or cooling device 4 is also arranged on the robot arm 3, which permits local processing of the workpiece in the cutting area of the knife by influencing the temperature.
  • This heating or cooling device 4 comprises, for example, an infrared lamp 5 as a heat source and a ventilation device indicated in the form of a blow pipe 6 as Cooling device, wherein the rays of the infrared lamp 5 or the air jets from the blow pipe 6 are directed in the feed direction in front of the knife onto the workpiece W.
  • the heating or cooling device 4a could also comprise only indicated flow channels 7 within the sonotrode 2, which flow channels are connected to a heating or cooling device 10 via suitable line connections 8 and preliminary and supply lines 9 for the application of heat transfer medium.
  • the heat transfer medium preferably air
  • the heat transfer medium can be preheated accordingly or, if necessary, also cooled and flows at a required temperature into the sonotrode 2, where it determines the sonotrode temperature, so that the workpiece temperature in the cutting area can also be set via the sonotrode temperature is.
  • the workpiece in the cutting area can be set to a specific temperature by means of the heating and cooling device 4, 4a, it is possible to prepare the cutting properties of the plastic in a targeted manner for the subsequent ultrasound cut, depending on its temperature behavior, so that an optimal cutting process is ensured , in which the ultrasonic knife both cuts through the temperature-controlled material and cuts the reinforcement fibers exactly.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Details Of Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19920890221 1991-10-30 1992-10-15 Méthode pour couper du plastique renforcé par des fibres Withdrawn EP0540495A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2154/91 1991-10-30
AT215491 1991-10-30

Publications (1)

Publication Number Publication Date
EP0540495A1 true EP0540495A1 (fr) 1993-05-05

Family

ID=3528924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920890221 Withdrawn EP0540495A1 (fr) 1991-10-30 1992-10-15 Méthode pour couper du plastique renforcé par des fibres

Country Status (2)

Country Link
US (1) US5318420A (fr)
EP (1) EP0540495A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728498A1 (fr) * 1994-12-27 1996-06-28 Duo Graphic Equipement Dispositif pour couper a mi-chair des materiaux composites
EP2082854A1 (fr) * 2008-01-28 2009-07-29 Arelmasani Holding B.V. Dispositif de séparation pour produits alimentaires
US10569354B2 (en) 2015-02-13 2020-02-25 Coroplast Fritz Müller GmbH & Co. Method for assembling textile adhesive tapes
CN113894861A (zh) * 2021-09-28 2022-01-07 湖南科技大学 一种便携式激光加热辅助切削的加工装置

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5397407A (en) * 1994-01-12 1995-03-14 Innovative Automation Inc. Apparatus for cooling ultrasonic tube sealers
JPH07241936A (ja) * 1994-03-07 1995-09-19 Bridgestone Sports Co Ltd 球状体の製造方法
SE510236C2 (sv) * 1995-10-10 1999-05-03 Perstorp Flooring Ab Avverkande bearbetning
JP4173245B2 (ja) * 1999-04-06 2008-10-29 Ｔｈｋ株式会社 スクライブ方法
US6277224B1 (en) * 1999-12-23 2001-08-21 Edward Muesch Ultrasonic perforator and a method for performing an ultrasonic perforation
US6533314B2 (en) * 1999-12-30 2003-03-18 Delphi Technologies, Inc. Instrument panel with integral hidden door cover and method of manufacture thereof
US20020079677A1 (en) * 2000-12-21 2002-06-27 Skirha Martin Dirk Instrument panel with integral hidden door cover and method of in-process manufacture thereof
JP2003159752A (ja) * 2001-11-27 2003-06-03 Ykk Corp 高周波又は超音波加熱による合成樹脂体の溶着方法とその溶着装置
JP4503220B2 (ja) * 2002-07-25 2010-07-14 東洋製罐株式会社 多層体の切断方法および多層成型品
US6892512B2 (en) * 2002-08-07 2005-05-17 Medco Health Solutions, Inc. Automated prescription filling system/method with automated labeling and packaging system/method automated order consolidation system/method
JP3803346B2 (ja) * 2004-02-19 2006-08-02 株式会社アイディエス 分注用穿孔装置
KR101153197B1 (ko) * 2005-10-04 2012-06-18 니혼쇼료쿠키카이 가부시키가이샤 초음파 트림방법
JP4890868B2 (ja) * 2006-01-18 2012-03-07 リンテック株式会社 シート切断装置及び切断方法
EP2583993B1 (fr) * 2010-06-17 2017-05-17 Dexerials Corporation Feuillet thermoconducteur et son procédé de fabrication
JP5970755B2 (ja) * 2011-07-21 2016-08-17 大日本印刷株式会社 微細貫通孔成形装置、微細貫通孔成形品の製造方法、およびその方法により製造されたミスト形成用フィルター
ITBO20110737A1 (it) * 2011-12-20 2013-06-21 Giuseppe Gallucci Metodo per la recisione di pannelli e dispositivo per attuare tale metodo
EP2818563B1 (fr) * 2013-06-24 2016-11-02 Dansk Mink Papir A/S Contrôleur capillaire destiné à être monté sur une machine d'étirage pour étirer une peau sur une planche à peau
JP2018034232A (ja) * 2016-08-30 2018-03-08 ファナック株式会社 流体噴射装置
JP6519029B2 (ja) * 2017-02-28 2019-05-29 株式会社アドウェルズ 切削装置

Citations (2)

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US3086288A (en) * 1955-04-20 1963-04-23 Cavitron Ultrasonics Inc Ultrasonically vibrated cutting knives
JPS59187414A (ja) * 1983-04-08 1984-10-24 Mitsubishi Electric Corp レ−ザ併用せん断機

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US4596171A (en) * 1983-10-19 1986-06-24 Gerber Garment Technology, Inc. Method and apparatus for ultrasonically cutting sheet material
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US4518551A (en) * 1984-04-30 1985-05-21 Rca Corporation Method and apparatus for trimming and finishing the outer edge of a molded record
US4733997A (en) * 1985-06-18 1988-03-29 Tenex Corporation Method of producing chair mats and the like involving edge trimming
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US4670210A (en) * 1985-09-03 1987-06-02 Allied Corporation Method for removing protruding reinforcing fibers from a deflashed fiber reinforced plastic article
US4654969A (en) * 1986-05-14 1987-04-07 Krauss U. Reichert Gmbh & Co. Kg Cutting machine for flat material
NL8800077A (nl) * 1988-01-14 1989-08-01 Vmi Epe Holland Inrichting voor het doorsnijden van een strook ongevulcaniseerde rubber.
US5015223A (en) * 1989-12-06 1991-05-14 Zip-Pak, Incorporated Hotseal jaws and cutoff knife assembly for processing thermoplastic film bag making material

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US3086288A (en) * 1955-04-20 1963-04-23 Cavitron Ultrasonics Inc Ultrasonically vibrated cutting knives
JPS59187414A (ja) * 1983-04-08 1984-10-24 Mitsubishi Electric Corp レ−ザ併用せん断機

Non-Patent Citations (1)

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PATENT ABSTRACTS OF JAPAN vol. 9, no. 51 (M-361)(1774) 6. März 1985 & JP-A-59 187 414 ( MITSUBISHI K.K. ) 24. Oktober 1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728498A1 (fr) * 1994-12-27 1996-06-28 Duo Graphic Equipement Dispositif pour couper a mi-chair des materiaux composites
EP2082854A1 (fr) * 2008-01-28 2009-07-29 Arelmasani Holding B.V. Dispositif de séparation pour produits alimentaires
NL1034959C2 (nl) * 2008-01-28 2009-07-30 Arelmasani Holding B V Separatie-inrichting voor voedingsmiddelen.
US10569354B2 (en) 2015-02-13 2020-02-25 Coroplast Fritz Müller GmbH & Co. Method for assembling textile adhesive tapes
EP3256539B1 (fr) 2015-02-13 2020-04-08 Coroplast Fritz Müller GmbH & Co. KG Procédé de fabrication de bandes textiles adhésives
CN113894861A (zh) * 2021-09-28 2022-01-07 湖南科技大学 一种便携式激光加热辅助切削的加工装置

Also Published As

Publication number Publication date
US5318420A (en) 1994-06-07

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