DE19931691B4 - Method for producing a motor vehicle trim molding - Google Patents

Method for producing a motor vehicle trim molding Download PDF

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Publication number
DE19931691B4
DE19931691B4 DE1999131691 DE19931691A DE19931691B4 DE 19931691 B4 DE19931691 B4 DE 19931691B4 DE 1999131691 DE1999131691 DE 1999131691 DE 19931691 A DE19931691 A DE 19931691A DE 19931691 B4 DE19931691 B4 DE 19931691B4
Authority
DE
Germany
Prior art keywords
insert
skin
molding
thermoplastic
motor vehicle
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.)
Expired - Fee Related
Application number
DE1999131691
Other languages
German (de)
Other versions
DE19931691A1 (en
Inventor
Bernhard Beer
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.)
Toyota Boshoku Corp
Original Assignee
Brocke KG I B S
Ibs Brocke & Co KG 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 Brocke KG I B S, Ibs Brocke & Co KG GmbH filed Critical Brocke KG I B S
Priority to DE1999131691 priority Critical patent/DE19931691B4/en
Publication of DE19931691A1 publication Critical patent/DE19931691A1/en
Application granted granted Critical
Publication of DE19931691B4 publication Critical patent/DE19931691B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C2045/0093Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of articles provided with an attaching element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486Details, accessories and auxiliary operations
    • B29C2045/14868Pretreatment of the insert, e.g. etching, cleaning
    • B29C2045/14877Pretreatment of the insert, e.g. etching, cleaning preheating or precooling the insert for non-deforming purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/42Removing or ejecting moulded articles using means movable from outside the mould between mould parts, e.g. robots
    • B29C2045/425Single device for unloading moulded articles and loading inserts into the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/42Removing or ejecting moulded articles using means movable from outside the mould between mould parts, e.g. robots

Abstract

The molded part should have a range that remains shatter-free under impact loads even at low temperatures. For this purpose, an insert element is inserted into that region of a mold cavity which is assigned to the splinter-free region of the molded part. The insert element consists of a natural fiber material, which is impregnated with a thermoplastic material. By injection molding of a thermoplastic plastic, the insert element is provided with a visible surface of the molding forming the outer skin. The outer skin can receive any design. It is prevented from splitting by natural fiber material.

Description

  • The The invention relates to a method for producing a motor vehicle trim molding.
  • such Moldings serve for lining the motor vehicle interiors. Here There are areas that affect the direct action of an airbag at its release are exposed. For example, it comes with a seat airbag an impact first the cover and then the airbag on the Covering the B-pillar. If splinters detach from this cladding, it means a considerable amount endangering the inmates. In addition, can the airbag of the airbag is damaged become.
  • From the DE 1107396 B For example, there is known a method for producing a plastic molded article which comprises a glass fiber mat, a glass fiber fabric above and fabric strands for forming a rib-shaped structure. The problem of fragmentation is neither addressed nor solved.
  • The latter also applies to the method according to DE 1529957 B There, a natural fiber material is back-injected with thermoplastic in such a way that it forms the visible surface of the molding. By appropriate temperature control of the thermoplastic material is prevented from passing through the fabric. Their texture, shape and color are thus preserved, which is desirable because the natural fiber material serves exclusively decorative purposes.
  • The DE 4224474 A1 describes an interior trim part, which consists of a woven, knitted fabric, fleece, leather, leather substitute or the like. The material is only partially penetrated by the back-injected plastic. Also, the problem of fragmentation is not addressed.
  • The same applies to JP 1-206014 (A), which is the manufacture of a glove box lid made of plastic. The latter has a laminated outer skin made of fabric.
  • From the DE 4122412 A1 It is known to inject natural fibers with plastic. Again, the question of fragmentation plays no role.
  • From the DE 757045 C Finally, it is known, insert parts, such as wires, pipes, insulated cables, cables and the like to back-injection with thermoplastic material, wherein the inserts are introduced preheated in the mold cavity.
  • Of the Invention is based on the object, a cost-effective production from reliable shatterproof To allow moldings.
  • The The object is achieved by a method for producing a motor vehicle trim molding solved a splinter-free area, an insert of plastic impregnated, preformed and heated Natural fiber material in the mold cavity of an injection molding machine inserted and there with thermoplastic to form an outer skin is injected.
  • The Insert element made of impregnated natural fiber material guarantees next to high dimensional stability a virtually temperature-independent fragmentation. Because the outer skin through the injection molding process intimately connected to the insert element, the latter ensures that the Skin shatterproof is. In extreme cases There may be cracks, but not chipping or partial Chipping off splinters. Thus, the risk of injury is banned and also the risk of damaging the Airbag of the airbag.
  • The thermoplastic outer skin determines the decor of the molding and can also high quality claims satisfy the design of a motor vehicle interior. The thickness of the outer skin is advantageously 0.2 to 3.0 mm. Preference is given to the thinner area work, as it meets the requirements of the decor and at the same time a relatively low susceptibility to cracking having.
  • The preheated Natural fiber material is plastic and is made by the injection molding process in the desired Brought form. For one thing must no tolerances are observed, and on the other hand results in a particularly intimate connection between the fibers and the sprayed thermoplastic. Also, the tendency to warp decreases.
  • One significant advantage of the invention is that not the entire molded part must be formed splinter-free, but that yourself can limit the fragmentation freedom to those areas the raised Loads are exposed. The remaining areas exist only from the thermoplastic of the outer skin. You get on this Way extremely inexpensive Moldings.
  • Of course, the method is also applicable to such moldings that must be formed shatterproof over their entire extension. Here is the entire molded part of a impregnated natural fiber insert element with thermoplastic outer skin. Also, a plurality of splinter-free areas is possible.
  • at the production of the outer skin Care must be taken to ensure that the viewing area of the molding not by gate points impaired becomes. These are to be moved to the edge or back in those areas that are above the natural fiber insert element hinauserstrecken.
  • In essential development of the invention it is proposed that the insert front side with the outer skin and back in places with a support or fastener is injected. This offers the whole particularly advantageous possibility the backside of the molding without additional Provide operation with the support and / or fasteners required there, where these one-piece, so festittstechnisch favorable with be connected to the molding. On the back of the molding can ribs arising with the support or fasteners are connected. They are above those Area, which is associated with the natural fibers, led out, let it is at the edge, be it in that area of the mold cavity inside, which does not serve for the installation of the insert element. The gate marks the cast fasteners are placed so that the injected plastic formed visible surface no impairment experiences.
  • The Invention will be described below with reference to preferred embodiments explained in more detail in connection with the accompanying drawings. The drawing shows in:
  • 1 a front perspective view of a molding;
  • 2 to 4 Horizontal sections through the molding after 1 ,
  • In the molding 1 to 1 it is a fairing for a B-pillar of a motor vehicle. The panel has an area 2 which is designed to be splinterproof and therefore able to withstand the impact of an airbag.
  • 2 shows a horizontal section through this area. Here is the molding 1 an insert element 3 on, which is an outer skin forming the visible surface 4 wearing.
  • The insert element 3 consists of a natural fiber material, which is impregnated with a thermoplastic material. In the manufacture of this material is preformed or heated inserted into a mold cavity of an injection molding machine. Then thermoplastic material is used to form the outer skin 4 injected into the mold cavity. The thermoplastic material intimately bonds with the impregnated natural fiber material so that no splitting occurs even at low temperatures when the cover of the airbag or its airbag is thrown against the B-pillar.
  • 3 shows a horizontal section according to the 2 , However, by a portion of the molding, in which no insert element is provided.
  • The horizontal section after 4 corresponds to the 2 , but with the proviso that the molding 1 on its back a fastener 5 wearing. This is to the molding 1 molded, in such a way that the thermoplastic plastic for the outer skin 4 around the insert element 3 has been diverted.
  • It can, if necessary, the entire molding 1 be provided with an insert element made of impregnated natural fiber material. Furthermore, it is possible to form a plurality of splinter-safe areas, and indeed wherever corresponding loads occur.

Claims (3)

  1. Method for producing a motor vehicle trim molding ( 1 ) with a shatter-free area ( 2 ), wherein an insert ( 3 ) of plastic impregnated, preformed and heated natural fiber material in the mold cavity of an injection molding machine and there with thermoplastic material to form an outer skin ( 4 ) is injected.
  2. Method according to claim 1, characterized in that the insert part ( 3 ) on the front side with the outer skin ( 4 ) and at the back in places with a support or fastening element ( 5 ) is injected.
  3. Method according to claims 1 and 2, characterized in that the outer skin ( 4 ) is injected in a thickness of 0.2 to 3.0 mm.
DE1999131691 1999-07-08 1999-07-08 Method for producing a motor vehicle trim molding Expired - Fee Related DE19931691B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999131691 DE19931691B4 (en) 1999-07-08 1999-07-08 Method for producing a motor vehicle trim molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999131691 DE19931691B4 (en) 1999-07-08 1999-07-08 Method for producing a motor vehicle trim molding

Publications (2)

Publication Number Publication Date
DE19931691A1 DE19931691A1 (en) 2001-01-18
DE19931691B4 true DE19931691B4 (en) 2005-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999131691 Expired - Fee Related DE19931691B4 (en) 1999-07-08 1999-07-08 Method for producing a motor vehicle trim molding

Country Status (1)

Country Link
DE (1) DE19931691B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014209A1 (en) * 2007-03-24 2008-09-25 GM Global Technology Operations, Inc., Detroit Motor vehicle with opposite side pivoting side doors and an intermediate vehicle pillar

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051334A1 (en) * 2004-10-21 2006-05-04 Christian Fuchs Process for producing a dimensionally stable object coated with a textile fabric, in particular a fiber composite structure
DE102009060689B4 (en) * 2009-12-29 2015-12-03 Airbus Operations Gmbh Process for producing a fiber-reinforced component and device for carrying out the process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757045C (en) * 1937-03-24 1951-08-02 Siemens Ag A method for the encapsulation of wires, pipes and other Formkoerpern with thermoplastic plastics, especially high molecular weight polymers or copolymers
DE1107396B (en) * 1954-12-14 1961-05-25 Richard Jonke A process for the production of reinforced or stiffened plastic molded parts in an injection molding
DE2011954A1 (en) * 1970-03-13 1971-10-21 Wachsmann E Laminate for surface treatment of injection mouldings
DE1529957B1 (en) * 1963-11-01 1972-06-08 Holtzman Samuel Joseph A process for producing an article having a rigid wall, and at least one fabric with bonded surface
DE4122412A1 (en) * 1991-07-06 1993-01-14 Bayer Ag Moulding prodn. with decorative surface - by inserting decorative material with edge bent inwards in injection moulding tool
DE4224474A1 (en) * 1992-07-24 1994-01-27 Riesselmann & Sohn Inner cladding part for various means of transport - has matrix directly connected to plastic carrier by back-spraying.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757045C (en) * 1937-03-24 1951-08-02 Siemens Ag A method for the encapsulation of wires, pipes and other Formkoerpern with thermoplastic plastics, especially high molecular weight polymers or copolymers
DE1107396B (en) * 1954-12-14 1961-05-25 Richard Jonke A process for the production of reinforced or stiffened plastic molded parts in an injection molding
DE1529957B1 (en) * 1963-11-01 1972-06-08 Holtzman Samuel Joseph A process for producing an article having a rigid wall, and at least one fabric with bonded surface
DE2011954A1 (en) * 1970-03-13 1971-10-21 Wachsmann E Laminate for surface treatment of injection mouldings
DE4122412A1 (en) * 1991-07-06 1993-01-14 Bayer Ag Moulding prodn. with decorative surface - by inserting decorative material with edge bent inwards in injection moulding tool
DE4224474A1 (en) * 1992-07-24 1994-01-27 Riesselmann & Sohn Inner cladding part for various means of transport - has matrix directly connected to plastic carrier by back-spraying.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP 1-206014 (A), Patent Abstracts of Japan M-893 Nov. 16 1989 Vol. 13/No. 512
JP 1206014 A, Patent Abstracts of Japan M-893 Nov. 16 1989 Vol. 13/No. 512 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014209A1 (en) * 2007-03-24 2008-09-25 GM Global Technology Operations, Inc., Detroit Motor vehicle with opposite side pivoting side doors and an intermediate vehicle pillar

Also Published As

Publication number Publication date
DE19931691A1 (en) 2001-01-18

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8327 Change in the person/name/address of the patent owner

Owner name: ISE INTEX GMBH, 51597 MORSBACH, DE

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ISE INTEX GMBH, 51597 MORSBACH, DE

8327 Change in the person/name/address of the patent owner

Owner name: POLYTEC AUTOMOTIVE GMBH & CO.KG, 49393 LOHNE, DE

8327 Change in the person/name/address of the patent owner

Owner name: POLYTEC AUTOMOTIVE GMBH & CO. KG, 82538 GERETS, DE

R081 Change of applicant/patentee

Owner name: TOYOTA BOSHOKU KABUSHIKI KAISHA, KARIYA-SHI, JP

Free format text: FORMER OWNER: POLYTEC AUTOMOTIVE GMBH & CO. KG, 82538 GERETSRIED, DE

Effective date: 20110429

R082 Change of representative

Representative=s name: VON KREISLER SELTING WERNER, DE

R082 Change of representative

Representative=s name: VON KREISLER SELTING WERNER, DE

Effective date: 20120713

Representative=s name: VON KREISLER SELTING WERNER - PARTNERSCHAFT VO, DE

Effective date: 20120713

R081 Change of applicant/patentee

Owner name: TOYOTA BOSHOKU KABUSHIKI KAISHA, JP

Free format text: FORMER OWNER: POLYTEC RIESSELMANN GMBH & CO KG, 49393 LOHNE, DE

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R082 Change of representative

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R081 Change of applicant/patentee

Owner name: TOYOTA BOSHOKU KABUSHIKI KAISHA, JP

Free format text: FORMER OWNER: BOSHOKU AUTOMOTIVE EUROPE GMBH, 82538 GERETSRIED, DE

Effective date: 20130611

Owner name: TOYOTA BOSHOKU KABUSHIKI KAISHA, KARIYA-SHI, JP

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Effective date: 20130611

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20150203