EP1812215A1 - Outil de formage et procede pour fabriquer une plaque coulee dans du plastique, pulverisee de plastique ou entouree de plastique expanse - Google Patents

Outil de formage et procede pour fabriquer une plaque coulee dans du plastique, pulverisee de plastique ou entouree de plastique expanse

Info

Publication number
EP1812215A1
EP1812215A1 EP05800918A EP05800918A EP1812215A1 EP 1812215 A1 EP1812215 A1 EP 1812215A1 EP 05800918 A EP05800918 A EP 05800918A EP 05800918 A EP05800918 A EP 05800918A EP 1812215 A1 EP1812215 A1 EP 1812215A1
Authority
EP
European Patent Office
Prior art keywords
mold
wire
tool
plastic
plastic material
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Withdrawn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
EP05800918A
Other languages
German (de)
English (en)
Inventor
Robert Koch
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.)
Webasto SE
Original Assignee
Webasto SE
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 Webasto SE filed Critical Webasto SE
Publication of EP1812215A1 publication Critical patent/EP1812215A1/fr
Withdrawn legal-status Critical Current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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/02—Deburring or deflashing
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/7207—Heating or cooling of the moulded 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C2045/0077—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping removing burrs or flashes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings

Definitions

  • the invention relates to a mold and to a method for producing a plastic encapsulated, encapsulated or foam-coated plate, for example, provided with a plastic frame cover for a vehicle roof, according to the preamble of claim 1 and of claim 10.
  • Such a mold and such a method for producing a lid of an openable vehicle roof are known for example from DE 42 38 889 A1.
  • a receiving groove for a sealing profile of this cover is produced in the molded on this or foamed plastic frame by a mold having a plurality of laterally adjacent to each other via a parting line having a front to the produced sealing profile-receiving groove complementary shaping profile.
  • the cover for an openable vehicle roof four movably mounted slides are provided on the mold, which adjoin each other in the region of the four corners of the cover plate via a parting line. These four slides are simultaneously withdrawn from the still soft plastic mass of the plastic frame.
  • An object of the present invention is to provide a mold and a method for producing a plastic encapsulated, overmolded or foamed plate, for example a lid of a vehicle roof, with which the formation of burrs is already reduced in the tool.
  • the invention provides in essence to arrange on an upper tool and / or a lower tool and / or on a slider of a mold, in particular in the region of a parting line or an edge of the workpiece at least one heatable wire, after curing of the plastic frame in the tool before opening the Form or before pulling the slider is activated briefly. By heating the wire, excess PU material is melted. The residues remain on the tool and are removed during cleaning of the same, while the workpiece itself can be removed from the tool as far as possible without burrs.
  • FIG. 1 is a perspective plan view of an openable vehicle roof with befindlichem in the closed position lid
  • Fig. 2 shows a section through the lid in the edge region at its
  • a roof cutout 17 is provided, which can be closed by means of a cover 2 and by exhibiting its Trailing edge and / or moving the lid 2 is at least partially exposed.
  • a cover 2 consists of a cover plate 3, which is preferably made of transparent material such as glass or plastic, an underlying reinforcing frame 4 and the two parts 3 and 4 by connecting plastic frame 8.
  • the reinforcing frame 4 may be formed integrally or in several parts.
  • the plastic frame 8 produced by spraying or injection molding in a mold 15 has at its outwardly directed edge a groove 7 for receiving a sealing profile 5.
  • the plastic frame is preferably made of polyurethane (PU).
  • the mold 15 consists of a lower tool 12, an upper tool 11 and at the edges in the longitudinal direction, i. Sliders 6 slidably arranged parallel to the edges of the cover plate 3 and together delimit a mold cavity corresponding to the overall contour of the cover plate 3, the reinforcement frame 4 and the plastic frame 8.
  • the cover 2 during manufacture (FIG. 2) is typically in the inverse of its position of use (FIG. 1) in the molding tool 15.
  • the plastic frame 8 For attachment of the sealing profile 5 after removal of the lid 2 from the mold 17, the plastic frame 8 is provided with a groove 7.
  • the sealing profile 5 engages with a shape corresponding to the contour of the groove 7.
  • the groove 7 of the plastic frame 8 has two opposite undercuts 10 which cooperate with two complementary shaped projections 9 on the plastic frame 8 such that the sealing profile 5 is held firmly on the plastic frame 8 and only by horizontal forces during assembly into the groove 7 inside can be pressed or removed for replacement in the event of damage by pulling it outward.
  • heatable wires 14 and 13 are provided on the upper tool 11 in the region of the parting line for the adjacent slide 6 and on the slide 6 in the region of the parting line for the lower tool 12.
  • the arrangement of the wires 13 and 14 is only exemplary and not restrictive. In general, one or more wires can be arranged on the upper tool 11, on the lower tool 12 and / or on the slides 6 at locations where burrs are typically formed. In this case, an arrangement of the wires 13 or 14 on the upper tool 11 is generally and / or to be preferred to the lower tool 12, since these must be pivoted to open and close only against each other and thereby the energy supply is easier than the sliding slides. 6
  • the increased electrical resistance having wires 13 and 14 are applied after curing of the PU material of the plastic frame 8 and before pulling out the slider 6 and the opening of the mold 15 for a short period of time with electrical energy.
  • the wires 13 and 14 reach for a short time at about 300 ° C for annealing and melt in the joint area between the tool parts 11, 12 and 6 or between them and the plastic frame 8 excess plastic material that otherwise would have led to a Gratbiidung.
  • the temperature of the wires should never rise above 400 ° C, because then it can cause the burning of the plastic.
  • To control the temperature may additionally be provided cooperating with an electronic control, not shown, temperature sensor or the wires are made of a PTC material and signal by their resistance change with increasing temperature of the control directly the temperature value reached. In the simplest case, however, a simple time control, which is based on an acquisition value determined by tests for the necessary heating and annealing time, is sufficient.
  • wires is to be understood as meaning both a wire with a round cross-section and a rectangular, polygonal, oval or similar cross-section
  • the material used for the wires 13 and 14 is a metal or a metal alloy as well as a suitable material electrically conductive ceramic material or an electrically conductive plastic with appropriate temperature resistance and good release properties against the metal of the mold suitable - such as a pan coating material.
  • the heating of the wires 13 and 14 is preferably about 10 -20 s, the actual annealing phase after reaching the required melting temperature for melting the excess plastic, however, is preferably less than a second.
  • An inventive method for producing a cover of a vehicle roof provides that a cover plate is inserted with a reinforcing frame in a lower tool of a mold that the Forming tool with the associated upper tool and optionally slidably mounted slides is closed, that plastic material is injected into a cavity of the mold, that the plastic material is cured in the mold and that prior to the opening of the mold or before pulling the slide at the joints between the lower tool, Upper tool and / or sliders arranged heaters are activated for melting superfluous plastic material.
  • the wires 13 and 14 can be provided with the same in the production of new molds, but they can also be retrofitted to existing molds, wherein incorporated to prepare the attachment in a parting line facing surface of a portion of the mold corresponding to the cross section of the wire groove becomes.

Abstract

L'invention concerne un outil de formage et un procédé pour fabriquer une plaque coulée dans du plastique, pulvérisée de plastique ou entourée de plastique expansé, par exemple, une couverture dotée d'un cadre en plastique pour le toit ouvrant d'un véhicule. Selon l'invention, pour éviter la formation de bavures, au moins un fil (13, 14) se trouve dans la zone d'au moins une ligne de joint entre des éléments d'outillage (11, 12, 6) voisins, ce fil étant chauffé pour éliminer la matière plastique superflue du cadre en plastique (8).
EP05800918A 2004-10-18 2005-10-11 Outil de formage et procede pour fabriquer une plaque coulee dans du plastique, pulverisee de plastique ou entouree de plastique expanse Withdrawn EP1812215A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004050861A DE102004050861B4 (de) 2004-10-18 2004-10-18 Formwerkzeug und Verfahren zur Herstellung einer mit Kunststoff umgossenen, umspritzten oder umschäumten Platte
PCT/DE2005/001819 WO2006042510A1 (fr) 2004-10-18 2005-10-11 Outil de formage et procede pour fabriquer une plaque coulee dans du plastique, pulverisee de plastique ou entouree de plastique expanse

Publications (1)

Publication Number Publication Date
EP1812215A1 true EP1812215A1 (fr) 2007-08-01

Family

ID=35843756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05800918A Withdrawn EP1812215A1 (fr) 2004-10-18 2005-10-11 Outil de formage et procede pour fabriquer une plaque coulee dans du plastique, pulverisee de plastique ou entouree de plastique expanse

Country Status (4)

Country Link
US (1) US20080044512A1 (fr)
EP (1) EP1812215A1 (fr)
DE (1) DE102004050861B4 (fr)
WO (1) WO2006042510A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016103745B4 (de) * 2016-03-02 2019-03-14 Webasto SE Formwerkzeug zum Fixieren eines Einsatzes in einer Ausnehmung eines tafelartigen Werkstücks sowie Fahrzeugdachelement
CN112497600A (zh) * 2020-10-30 2021-03-16 李爽 一种合成橡胶件成型模具
DE102021118365A1 (de) 2021-07-15 2023-01-19 Webasto SE Deckel für ein Fahrzeugdach und Verfahren zur Herstellung eines solchen Deckels
DE102021121368A1 (de) 2021-08-17 2023-02-23 Webasto SE Verfahren zur Herstellung eines Deckels für ein Fahrzeugdach

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1292593A (en) * 1968-09-28 1972-10-11 Gkn Group Services Ltd Improvements in or relating to manufacture of thermo-plastic bodies
JPS5949920A (ja) * 1982-09-14 1984-03-22 Mitsuboshi Belting Ltd 成形体のバリ除去装置
DE3245833A1 (de) * 1982-12-09 1984-06-14 Günter Hans 1000 Berlin Kiss Verfahren und vorrichtung zum entgraten von durch verpressen hergestellten formteilen oder dergleichen
DE3301677C2 (de) * 1983-01-20 1989-03-16 Bayer Ag, 5090 Leverkusen Verfahren und Vorrichtung zum Herstellen von Polyurethan-Formteilen
US4561625A (en) * 1983-09-26 1985-12-31 Libbey-Owens-Ford Company Mold structure
JPH01195032A (ja) * 1988-01-29 1989-08-04 Hashimoto Forming Ind Co Ltd ウインドウモールディングの製造方法
DE3810845A1 (de) * 1988-03-30 1989-10-19 Friedrichsfeld Gmbh Heizelement
JP2958050B2 (ja) * 1990-03-26 1999-10-06 エヌオーケー株式会社 樹脂製部品の接合方法
DE4238889C2 (de) * 1992-11-19 1995-04-13 Webasto Schade Gmbh Verfahren zur Herstellung eines Deckels eines öffnungsfähigen Fahrzeugdaches
US5925302A (en) * 1994-04-25 1999-07-20 Dai Nippon Printing Co., Ltd. Method for forming a pattern onto an article during injection molding
US6461137B1 (en) * 1996-08-02 2002-10-08 Charles E. Ash Molding apparatus for encapsulating a sheet of material
JPH10337737A (ja) * 1997-06-04 1998-12-22 Inoac Corp 発泡成形品の成形方法および成形型
DE10017169B4 (de) * 1999-09-03 2006-01-19 Webasto Ag Deckel eines Fahrzeugdaches mit Kunststoffrahmen und Randspaltdichtung sowie Verfahren zur Herstellung eines solchen Deckels
DE10107743A1 (de) * 2001-02-16 2002-09-05 Webasto Vehicle Sys Int Gmbh Vorrichtung zum Umschäumen einer transparenten Scheibe für ein Fahrzeugdach
JP2003011157A (ja) * 2001-07-04 2003-01-15 Asahi Glass Co Ltd 枠材付き窓用板材の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006042510A1 *

Also Published As

Publication number Publication date
DE102004050861A1 (de) 2006-04-20
DE102004050861B4 (de) 2009-10-08
WO2006042510A1 (fr) 2006-04-27
US20080044512A1 (en) 2008-02-21

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