WO2017055078A1 - Pièce moulée par injection à composants multiples pour un dispositif d'éclairage d'un véhicule - Google Patents

Pièce moulée par injection à composants multiples pour un dispositif d'éclairage d'un véhicule Download PDF

Info

Publication number
WO2017055078A1
WO2017055078A1 PCT/EP2016/071563 EP2016071563W WO2017055078A1 WO 2017055078 A1 WO2017055078 A1 WO 2017055078A1 EP 2016071563 W EP2016071563 W EP 2016071563W WO 2017055078 A1 WO2017055078 A1 WO 2017055078A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
plastic
vehicle
impact
injection
Prior art date
Application number
PCT/EP2016/071563
Other languages
German (de)
English (en)
Inventor
Odo Karger
Original Assignee
Hella Kgaa Hueck & Co.
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 Hella Kgaa Hueck & Co. filed Critical Hella Kgaa Hueck & Co.
Publication of WO2017055078A1 publication Critical patent/WO2017055078A1/fr

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/37—Ventilation or drainage of lighting devices specially adapted for signal lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0077—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0089—Impact strength or toughness

Definitions

  • Multi-component injection molding component for one
  • the present invention relates to a multi-component injection molding component for a lighting device of a vehicle, comprising a first plastic component of a polymethyl methacrylate, formed by a first injection molding step and a second plastic component of a polymethyl methacrylate, which is at least partially molded or overmolded by means of a second injection molding step to the first plastic component is, so that with the two plastic components a composite material is formed.
  • DE 10 2005 038 932 A1 describes a method for producing a multi-component injection-molded component, and a first plastic component is produced by means of a first injection molding step, and then a second plastic component is at least partially injection molded or overmolded by means of a second injection molding step on the first plastic component.
  • a composite material is formed with the two plastic components.
  • Such a method for producing a multi-component injection-molded component is also used for the production of cover plates for taillights of motor vehicles.
  • DE 199 41 524 A1 shows a rear light for a vehicle with a lens, and for the production of different light colors, for example a red brake light and a yellow flashing light, colored plastic components are used.
  • a multi-component injection molding process for producing a lens of a lighting device of a vehicle used, in particular for producing the cover of a tail lamp first at least a first plastic component is injected, and then the second plastic component is continuously pre-injected over the first or the first Plastic components molded onto this, so that the second plastic component spans the first, for example, individual plastic components. Over the edge region along the dividing line between the two plastic components damage or damage develops under certain conditions immediately or after a while.
  • Figure 2 shows an example of a crack 15, which forms in the edge region 12 between the two plastic components 10 and 11, as can be observed in existing plastic composites.
  • the crack 15 is based on a gap 14 in the edge region 12, and in the gap 14 initially penetrate moisture, water and other media, impurities and the like, so that the crack 15 further extends between the two plastic components 10 and 11 inside.
  • causes of the formation of the crack 15 are climatic influences, especially changing humidity and changing temperatures, whereby the influence of cleaning media, alcohols and the like can lead to cracking 15. Due to the decorative effect that vehicle taillights meet, such damage patterns are unacceptable.
  • multi-component injection molding components are used, which are constructed from the components polymethylmethacrylate.
  • DE 10 2013 213 542 A1 shows a lighting device for a vehicle with a cover disk comprising a polymethyl methacrylate.
  • cover disks or lenses made of polymethyl methacrylate are constructed, wherein inside the lighting device, for example, in a headlight, find components of polymethylmethacrylate use, which are also involved in the formation of a composite material.
  • the object of the invention is the development of a multi-component injection molding component for a lighting device of a vehicle, in which the damage described above no longer occur.
  • it is the object of the invention to avoid gaps, cracks, and other optical impairments in the edge region on the dividing line between the two plastic components.
  • the invention includes the technical teaching that at least one of the plastic components comprises a high impact polymethylmethacrylate with a Charpy impact strength of at least 30 kJ / m 2 .
  • the Charpy impact strength may have a value of at least 30 kJ / m 2 , preferably at least 35 kJ / m 2 , more preferably at least 50 kJ / m 2 and most preferably at least 100 kJ / m 2 , with particularly good results have already been achieved with a Charpy impact strength of 35 kJ / m 2 .
  • impact polymethyl methacrylate is known under the trade name Plexiglas Resist AG 100, and its typical properties are high weather resistance, excellent transmission and clarity, brilliant optics, light weight half the weight of glass, An excellent ecological balance, and also results in a pleasant grip and sound behavior of molded parts made from it.
  • Impact-modified PMMAs are characterized by highest breaking strength and impact resistance, which is more than 30 times higher than that of glass.
  • improved stress cracking resistance results, which in particular has the effect of preventing crack formation, and this property can be used particularly advantageously for multi-component injection-molded components, cracking being particularly reduced even if at least one of the two plastic components is an impact-modified polymethyl methacrylate ,
  • the nominal breaking elongation of the impact-modified plastic component may, for example, have a value of at least 40% and preferably 45%.
  • the PMMA may be modified such that the yield stress has a value of at least 50 MPa.
  • the formed from an impact-modified polymethyl methacrylate plastic component forms the second plastic component, which is over-injected or molded over the at least one first plastic component.
  • the outer plastic component that covers the other plastic component is integrally formed and extends over the entire tail light, and by the impact resistance also results in a high resistance to external mechanical influences the cover disk.
  • the other mechanical properties relate to, for example, the tensile modulus, which has about 2200 MPa, while the nominal elongation at break, for example at 45%.
  • the Charpy impact strength is particularly advantageously up to 120 kJ / m 2 at a room temperature of 23 ° C.
  • FIG. 1 is a schematic view of two plastic components, which are molded together in a multi-component injection molding process, wherein an edge region between the two plastic components is shown,
  • Fig. 2 is a view of the edge region with a damage image comprising a
  • Fig. 3 is a detailed view of the edge region, which is formed damage-free.
  • FIG. 1 shows a partially schematic view of a multi-component injection-molded component 1 with a first plastic component 10 and with a second plastic component 11.
  • the two plastic components 10 and 11 are produced in a multi-component injection molding process by producing the first plastic component 10 by means of a first injection molding step the second plastic component is molded onto the first plastic component 10.
  • the composite material shown is formed, which may for example form a cover of a tail lamp of a vehicle.
  • the first plastic component 10 is formed continuously and spans the entire tail light.
  • the second plastic component 11 may be, for example, a locally limited colored component, for example, to form a red brake light or a yellow flashing light.
  • a dividing line 13 forms in the edge region 12, which is formed in particular circumferentially and encloses the plastic components 10 and 11 in full. It is not necessary to complete both plastic components 10 and 11 in the edge region and it is also possible that a plastic component 10 or 11 projects beyond the respective other plastic component 10, 11.
  • Figure 2 shows a detail in the edge region 12 of the multi-component injection molded component with the first plastic components 10 and the second plastic component 11, and in the edge region 12, a gap 14 has emerged from which a crack 15 is formed, and the multi-component injection molded component has two Poly methyl methacrylate components on.
  • a crack is unacceptable due to the decorative properties that vehicle rear taillights must meet.
  • chemical substances for example detergents, alcohols and the like can collect in these contaminants, which eventually lead to the formation of the crack.
  • Figure 3 shows a composite of the plastic components 10 and 11, and both plastic components 10 and 11 are made of a polymethyl methacrylate (PMMA). At least one of the two plastic components 10 or 11 has an impact-modified PMMA, so that, as the exemplary view shows, in the edge region 12, no gap 14 and no crack 15 is formed.
  • PMMA polymethyl methacrylate
  • I multi-component injection molding component 10 first plastic component

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne une pièce (1) moulée par injection à composants multiples pour un dispositif d'éclairage d'un véhicule, présentant un premier composant synthétique (10) en un poly(méthacrylate de méthyle), formé au moyen d'une première étape de moulage par injection, et présentant un deuxième composant synthétique (11) en une poly(méthacrylate de méthyle) qui est au moins partiellement injecté sur ou au-dessus du premier composant synthétique (10) au moyen d'une deuxième étape de moulage par injection de telle sorte qu'un composite de matière est formé par les deux composants synthétiques (10, 11). Pour éviter des dégradations dans la zone de bord au niveau de la ligne de séparation entre les deux composants synthétiques (10, 11), selon l'invention, au moins un des composants synthétiques (10, 11) est un poly(méthacrylate de méthyle) résistant aux chocs, présentant une résistance aux chocs selon Charpy d'au moins 30 kJ/M2.
PCT/EP2016/071563 2015-09-29 2016-09-13 Pièce moulée par injection à composants multiples pour un dispositif d'éclairage d'un véhicule WO2017055078A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015116427.2 2015-09-29
DE102015116427.2A DE102015116427A1 (de) 2015-09-29 2015-09-29 Mehrkomponenten-Spritzgussbauteil für eine Beleuchtungseinrichtung eines Fahrzeugs

Publications (1)

Publication Number Publication Date
WO2017055078A1 true WO2017055078A1 (fr) 2017-04-06

Family

ID=56926184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/071563 WO2017055078A1 (fr) 2015-09-29 2016-09-13 Pièce moulée par injection à composants multiples pour un dispositif d'éclairage d'un véhicule

Country Status (2)

Country Link
DE (1) DE102015116427A1 (fr)
WO (1) WO2017055078A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826214A (zh) * 2018-07-25 2018-11-16 华域视觉科技(上海)有限公司 新型免涂装前部车灯及其配光镜的制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021125674A1 (de) 2021-10-04 2023-04-06 HELLA GmbH & Co. KGaA Simultanes Mehrkomponenten-Spritzgießen für Kraftfahrzeugscheinwerfer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941524A1 (de) 1999-09-01 2001-03-08 Hella Kg Hueck & Co Leuchte für Fahrzeuge
DE102005038932A1 (de) 2005-08-17 2007-02-22 Weener Plastik Gmbh & Co Kg Spritzgussmaschine, Spritzgusswerkzeug-Vorrichtung für eine Spritzgussmaschine sowie Mehrkomponenten-Spritzgussverfahren
DE102005040225A1 (de) 2005-08-17 2007-02-22 Ulo Fahrzeugleuchten Gmbh Mehrteiliges Bauelement mit einer Verbindungsnaht und Verfahren zur Herstellung eines Bauelements
DE102012216081A1 (de) 2012-09-11 2013-03-14 Evonik Industries Ag Verfahren zur Herstellung von lichtstreuenden Formteilen mit hervorragenden optischen Eigenschaften und deren Verwendung
JP6037502B2 (ja) 2012-09-27 2016-12-07 日本プラスト株式会社 樹脂成形品
DE102013213542A1 (de) 2013-07-10 2015-01-15 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug, sowie Gehäusebauteil für eine KFZ-Beleuchtungseinrichtung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EVONIK: "PLEXIGLAS Resist AG 100", 30 September 2014 (2014-09-30), XP055317173, Retrieved from the Internet <URL:http://www.plexiglas-polymers.de/sites/dc/Downloadcenter/Evonik/Product/PLEXIGLAS-Molding-Compounds/en/Product-Information/PLEXIGLAS-Resist-AG-100-E.pdf> [retrieved on 20161108] *
EVONIK: "PLEXIGLAS Resist zk5HF", 14 July 2015 (2015-07-14), XP055317429, Retrieved from the Internet <URL:http://www.plexiglas-polymers.de/sites/dc/Downloadcenter/Evonik/Product/PLEXIGLAS-Molding-Compounds/de/Produktinformationen/PLEXIGLAS zk5HF_D.pdf> [retrieved on 20161108] *
JENSEN R: "TURN-KEY-ANLAGE ZUR PRODUKTION VON AUTOMOBILRUCKLEUCHTEN", PLASTVERARBEITER, HUETHIG GMBH, HEIDELBERG, DE, vol. 39, no. 9, 1 September 1988 (1988-09-01), pages 148, XP000007874, ISSN: 0032-1338 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826214A (zh) * 2018-07-25 2018-11-16 华域视觉科技(上海)有限公司 新型免涂装前部车灯及其配光镜的制备方法
CN108826214B (zh) * 2018-07-25 2024-05-03 华域视觉科技(上海)有限公司 新型免涂装前部车灯及其配光镜的制备方法

Also Published As

Publication number Publication date
DE102015116427A1 (de) 2017-03-30

Similar Documents

Publication Publication Date Title
DE69411721T2 (de) Spritzgegossene photochemische linse und verfahren zu deren herstellung
DE10392573B4 (de) Aus Harz hergestelltes Innenelement eines Öffnungs- und Schliesskörpers und Formungsmatrize dafür
DE102014208756A1 (de) Lichtleiter mit angeformtem optischen Element
WO2001098052A1 (fr) Procede de production d&#39;une piece hybride
WO2017055078A1 (fr) Pièce moulée par injection à composants multiples pour un dispositif d&#39;éclairage d&#39;un véhicule
DE102008032761A1 (de) Bauteil mit wenigstens einem galvanisierten Oberflächenbereich und Verfahren zur Herstellung eines derartigen Bauteils
DE102016102982A1 (de) Verfahren zur Herstellung einer Komponente
DE102019134006A1 (de) Streulichtblende für eine Fahrzeugkamera
DE102013219590B4 (de) Gekrümmtes Harzformteil
DE112011102872T5 (de) Folienhinterspritztes Gussprodukt
DE102009047735A1 (de) Verfahren und Vorrichtung zum Herstellen optischer Bauelemente
DE9306860U1 (de) Kraftfahrzeugleuchten-Körper
DE102017209951A1 (de) Zweifarbiger Formgegenstand
DE102012022277B4 (de) Beleuchtungsvorrichtung mit einer Lichtscheibe und Verfahren zur Herstellung einer Lichtscheibe für eine Beleuchtungsvorrichtung
DE102005009010B4 (de) Verfahren zur Herstellung von Platten aus Kunststoffmaterial mit Teilen, die durch eine Injektionskompression überformt wurden
DE102015224952A1 (de) Verfahren zur Bearbeitung eines aus einem Faser-Kunststoff-Verbund gebildeten Bauteils
DE102008057356A1 (de) Optische Linse und Herstellungsverfahren für eine optische Linse
DE202018105423U1 (de) Fahrzeugglasbaugruppe
DE102018207471A1 (de) Leuchtapplikation und Verfahren zur Fixierung eines Lichtwellenleiters
DE102016103775A1 (de) Verfahren zur Herstellung eines Fahrzeugbauteils
DE102020008063A1 (de) Formteil und Verfahren zum Herstellen eines solchen Formteils
EP4102266A1 (fr) Procédé de fabrication d&#39;un système de lentille
EP1010511A1 (fr) Procédé et dispositif pour mouler par injection des articles en matière plastique monocolorés, bicolorés ou multicolorés
DE102016213317A1 (de) Lichtdurchlässiges Leuchtengehäuseteil
DE102020109359A1 (de) Beleuchtungseinrichtung und Verfahren zum Fügen einer Beleuchtungseinrichtung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16765968

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16765968

Country of ref document: EP

Kind code of ref document: A1