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DE3610128C1 - Process and design for forming sharp solid edges in foam-backed upholstery parts - Google Patents

Process and design for forming sharp solid edges in foam-backed upholstery parts

Info

Publication number
DE3610128C1
DE3610128C1 DE19863610128 DE3610128A DE3610128C1 DE 3610128 C1 DE3610128 C1 DE 3610128C1 DE 19863610128 DE19863610128 DE 19863610128 DE 3610128 A DE3610128 A DE 3610128A DE 3610128 C1 DE3610128 C1 DE 3610128C1
Authority
DE
Germany
Prior art keywords
deep
foam
edge
cover
drawing mold
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
Application number
DE19863610128
Other languages
German (de)
Inventor
Helmut Storch
Peter Buchwald
Horst Uebelacker
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.)
Grammer AG
Original Assignee
Grammer Sitzsysteme 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 Grammer Sitzsysteme GmbH filed Critical Grammer Sitzsysteme GmbH
Priority to DE19863610128 priority Critical patent/DE3610128C1/en
Application granted granted Critical
Publication of DE3610128C1 publication Critical patent/DE3610128C1/en
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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/141—Hiding joints in the lining
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • 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
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

In a process for forming sharp solid edges in foam-backed upholstery parts whose covering is first of all thermoformed in a vacuum thermoforming mould and then foam-backed, that part of the thermoforming mould projecting in the region of the solid edge of the upholstery part is drawn back, after the covering is sucked against said thermoforming mould, to such an extent that the covering bears against it completely even in the edge region (Figs. 3 and 4). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Ausbildung scharfer voller Kanten bei hinterschäumten Polsterteilen, deren Bezug zunächst in einer Vakuum-Tiefziehform tiefgezogen und dann hin­ terschäumt wird, sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for training sharp full edges with foam-backed upholstery parts, their cover first deep-drawn in a vacuum deep-drawing mold and then there is foamed, and a device for performing the Procedure.

Ein Verfahren dieser Art ist aus Z. "Gummi Asbest Kunststoffe", Heft 10, 1972, Seiten 923-926 bekannt. Die bekannte Vorrich­ tung zur Durchführung des Verfahrens hat im Kantenbereich im feststehenden Teil der Tiefziehform Ansaugöffnungen.A method of this kind is made of Z. "Rubber asbestos plastics", Issue 10, 1972, pages 923-926 known. The well-known Vorrich tion for performing the method has in the edge area in fixed part of the deep-drawing mold suction openings.

Die Ausbildung scharfer voller Kanten bei hinterschäumten Pol­ sterteilen ist nach wie vor ein bis heute ungelöstes Problem, weil der Bezug im Kantenbereich nicht hinreichend nahe an der Tiefziehform anliegt. Mit der Erfindung soll hier Abhilfe ge­ schaffen werden und ein Verfahren sowie eine Vorrichtung zur Durchführung des Verfahrens vorgeschlagen werden, bei denen die Ausbildung scharfer voller Kanten bei hinterschäumten Pol­ sterteilen einwandfrei möglich ist. The formation of sharp full edges with a foamed pole Sharing is still an unsolved problem, because the cover in the edge area is not sufficiently close to the Thermoforming mold is applied. The invention is intended to remedy this situation will create and a method and an apparatus for Implementation of the procedure to be proposed where the formation of sharp full edges with foamed pole parts is perfectly possible.  

Diese Aufgabe wird nach dem erfindungsgemäßen Verfahren da­ durch gelöst, daß der im Bereich der vollen Kante des Pol­ sterteils vorspringende Teil der Tiefziehform nach dem An­ saugen des Bezugs soweit zurückgezogen wird, bis der Bezug auch im Kantenbereich nahezu vollständig an der Tiefziehform anliegt.This object is achieved by the method according to the invention solved by that in the area of the full edge of the pole Part of the protruding part of the deep-drawing mold according to the type suck the cover until the cover is pulled back almost completely on the deep-drawing mold also in the edge area is present.

Bei der erfindungsgemäßen Vorrichtung zur Durchführung die­ ses Verfahrens ist der im Bereich der vollen Kante des Pol­ sterteils vorspringende Teil der Tiefziehform als hin- und herverfahrbarer Schieber ausgebildet.In the device for carrying out the invention This procedure is in the area of the full edge of the pole The projecting part of the deep-drawing mold as a back and forth movable slide formed.

Zweckmäßigerweise ist ein in den Kantenbereich hinein- und herausverfahrbarer Stempel zum Strecken des Bezugs im Kan­ tenbereich angeordnet.It is expedient to insert and into the edge area retractable stamp to stretch the cover in the can arranged area.

Der Gegenstand der Erfindung wird nachstehend anhand der Zeichnung eines bevorzugten Ausfüh­ rungsbeispiels erläutert. Es zeigenThe subject of the invention is below based on the drawing of a preferred embodiment example explained. Show it

Fig. 1 bis 4 einen Querschnittsteil der Vorrichtung in einem ersten, zweiten, dritten bzw. vierten Verfahrensschritt.
 Figs. 1 to 4 is a cross-sectional part of the device in a first, second, third and fourth process step.

Die Vorrichtung weist einen feststehenden Teil 10 einer Tiefziehform und einen vorspringenden, beweglich gelagerten als Schieber 12 ausgebildeten Teil auf. In die Tiefziehform ist ein Bezug 14 für ein her­ zustellendes nicht dargestelltes, Polsterteil eingebracht.The device has a fixed part 10 of a deep-drawing mold and a projecting, movably mounted part designed as a slide 12 . A cover 14 for an upholstered part (not shown) to be produced is introduced into the deep-drawing mold.

Im vorliegenden Fall soll eine als Vertiefung im fertigen Polsterteil erscheinende Designrippe erzeugt werden, weshalb der Schieber 12 ein langgestrecktes flaches Profil ist.In the present case, a design rib appearing as a depression in the finished upholstery part is to be produced, which is why the slide 12 is an elongated flat profile.

Zwei verfahrbare Stempel 16 sind von beiden Seiten des Schiebers 12 in den Kan­ tenbereich zwischen dem Schieber 12 und dem feststehenden Teil 10 der Tiefziehform hinein und aus diesem Bereich heraus verfahrbar. Mit diesen Stempeln 16 wird der Bezug 14 in die Kantenbereiche auf beiden Seiten des Schiebers 12 ge­ drückt (Fig. 1 und 2), wobei der Bezug 14 eine gewisse Vordehnung erfährt. Bevor die Stempel 16 zurückgezogen werden, wird mit Hilfe von im feststehenden Teil 10 der Tiefziehform im Kantenbereich angeordneten Ansaugöffnungen 18 ein Vakuum in dem Hohl­ raum zwischen der Tiefziehform und dem am Stempel 16 anliegen­ den Bezug 14 erzeugt. Dieses Vakuum wird während des Zurückzie­ hens der Stempel 16 und auch noch später aufrechterhalten. Fig. 3 zeigt die Anordnung bei zurückgezogenen Stempeln 16.Two movable punches 16 are movable from both sides of the slide 12 into the edge region between the slide 12 and the fixed part 10 of the deep-drawing mold and out of this area. With these stamps 16 , the cover 14 is pressed into the edge regions on both sides of the slide 12 ( FIGS. 1 and 2), the cover 14 experiencing a certain amount of pre-stretching. Before the punches are withdrawn 16, space between the deep-drawing mold and produces the stamp 16 bear the reference 14 the by means of arranged in the fixed part 10 of the thermoforming mold at the edge portion suction ports 18, a vacuum in the hollow. This vacuum is maintained during retraction of the punch 16 and even later. Fig. 3 shows the arrangement when retracted stamps sixteenth

Im letzten Verfahrensschritt wird nun bei aufrechterhaltenem Vakuum der Schieber 12 um eine gewisse Strecke a in den feststehenden Teil 10 der Tiefziehform zurück­ gezogen, wobei die Strecke a derart ausgelegt ist, daß der Bezug 14 aufgrund des vorhandenen Vakuums sich im Kantenbe­ reich nahezu vollständig an der Tiefziehform (feststehen­ der Teil 10 + Schieber 12) anlegt (Fig. 4).In the last process step, the slide 12 is now pulled back by a certain distance a into the fixed part 10 of the deep-drawing mold while the vacuum is maintained, the distance a being designed such that the cover 14 is almost completely rich in the edge area due to the vacuum present Thermoforming mold (fixed part 10 + slide 12 ) ( Fig. 4).

Nunmehr kann in nicht dargestellter Weise mit Polyurethanschaum hinter­ schäumt werden.Can now with polyurethane foam behind in a manner not shown be foamed.

Claims (3)

1. Verfahren zur Ausbildung scharfer voller Kanten bei hinter­ schäumten Polsterteilen, deren Bezug zunächst in einer Vakuum- Tiefziehform tiefgezogen und dann hinterschäumt wird, dadurch gekennzeichnet, daß der Bereich der vollen Kante des Polsterteils vor­ springende Teil der Tiefziehform nach dem Ansaugen des Be­ zugs soweit zurückgezogen wird, bis der Bezug im Kantenbe­ reich nahezu vollständig anliegt.1. A process for the formation of sharp full edges in the case of foamed upholstery parts, the cover of which is first deep-drawn in a vacuum deep-drawing mold and then back-foamed, characterized in that the area of the full edge of the upholstery part before the jumping part of the deep-drawing mold after the suction of the loading is withdrawn until the cover is almost completely in the edge area. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß der im Bereich der vollen Kante des Polsterteils vorspringende Teil der Tiefziehform als hin- und herverfahrbarer Schieber (12) ausgebildet ist.2. Device for performing the method according to claim 1, characterized in that the projecting in the region of the full edge of the upholstery part of the deep-drawing mold is designed as a reciprocating slide ( 12 ). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß ein in den Kantenbereich hinein- und herausverfahrbarer Stem­ pel (16) zum Strecken des Bezugs (14) im Kantenbereich angeordnet ist.3. Apparatus according to claim 2, characterized in that an in and out of the movable Stem pel ( 16 ) for stretching the cover ( 14 ) is arranged in the edge region.
DE19863610128 1986-03-26 1986-03-26 Process and design for forming sharp solid edges in foam-backed upholstery parts Expired DE3610128C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863610128 DE3610128C1 (en) 1986-03-26 1986-03-26 Process and design for forming sharp solid edges in foam-backed upholstery parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863610128 DE3610128C1 (en) 1986-03-26 1986-03-26 Process and design for forming sharp solid edges in foam-backed upholstery parts

Publications (1)

Publication Number Publication Date
DE3610128C1 true DE3610128C1 (en) 1987-05-27

Family

ID=6297275

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863610128 Expired DE3610128C1 (en) 1986-03-26 1986-03-26 Process and design for forming sharp solid edges in foam-backed upholstery parts

Country Status (1)

Country Link
DE (1) DE3610128C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252470A2 (en) * 1986-07-09 1988-01-13 Bayer Ag Method and mould for the manufacture of foam upholstery provided with a textile covering
EP0252469A2 (en) * 1986-07-09 1988-01-13 Bayer Ag Method and apparatus for the manufacture of foam upholstery provided with a textile covering, especially for seat upholstery for vehicles
EP0314460B1 (en) * 1987-10-28 1992-12-23 Ford Motor Company Limited Moulded seat cushions
WO2007009781A1 (en) * 2005-07-18 2007-01-25 Faurecia Innenraum Systeme Gmbh Method of producing a composite part having a multicoloured surface, and composite part produced in this way

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Z. "Gummi Asbest Kunststoffe", Heft 10, 1972, S. 923-926 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252470A2 (en) * 1986-07-09 1988-01-13 Bayer Ag Method and mould for the manufacture of foam upholstery provided with a textile covering
EP0252469A2 (en) * 1986-07-09 1988-01-13 Bayer Ag Method and apparatus for the manufacture of foam upholstery provided with a textile covering, especially for seat upholstery for vehicles
EP0252469A3 (en) * 1986-07-09 1989-04-12 Bayer Ag Method and apparatus for the manufacture of foam upholstery provided with a textile covering, especially for seat upholstery for vehicles
EP0252470A3 (en) * 1986-07-09 1989-04-12 Bayer Ag Method and mould for the manufacture of foam upholstery provided with a textile covering
EP0314460B1 (en) * 1987-10-28 1992-12-23 Ford Motor Company Limited Moulded seat cushions
WO2007009781A1 (en) * 2005-07-18 2007-01-25 Faurecia Innenraum Systeme Gmbh Method of producing a composite part having a multicoloured surface, and composite part produced in this way

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: INTEGRAM INC., NEWMARKET, ONTARIO, CA

8328 Change in the person/name/address of the agent

Free format text: LOUIS, D., DIPL.-CHEM. DR.RER.NAT., 8183 ROTTACH-EGERN POEHLAU, C., DIPL.-PHYS., 8500 NUERNBERG LOHRENTZ, F., DIPL.-ING., 8130 STARNBERG SEGETH, W., DIPL.-PHYS., PAT.-ANWAELTE, 8500 NUERNBERG

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

Owner name: GRAMMER SITZSYSTEME GMBH, 8450 AMBERG, DE

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

Owner name: GRAMMER AG, 8450 AMBERG, DE

8339 Ceased/non-payment of the annual fee