DE3640710C2 - - Google Patents
Info
- Publication number
- DE3640710C2 DE3640710C2 DE19863640710 DE3640710A DE3640710C2 DE 3640710 C2 DE3640710 C2 DE 3640710C2 DE 19863640710 DE19863640710 DE 19863640710 DE 3640710 A DE3640710 A DE 3640710A DE 3640710 C2 DE3640710 C2 DE 3640710C2
- Authority
- DE
- Germany
- Prior art keywords
- mold
- jacket
- support core
- casting mold
- vacuum
- 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
Links
- 238000005266 casting Methods 0.000 claims description 10
- 238000007666 vacuum forming Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000009969 flowable effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
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
- B29C51/34—Moulds for undercut 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
- B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
-
- 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
- B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Vakuumformen einer Folie aus thermoplastischem Kunststoff zu einer Gießform für einen Gegenstand aus einem in einen festen Zustand überführ baren fließ- oder schüttfähigen Material, mit einem Saugkanäle aufweisenden Formwerkzeug, von dem die Gießform nach Abkühlung und Verfestigung des Kunststoffes abnehmbar ist.The invention relates to a device for vacuum forming Thermoplastic film into a mold for convert an object from a solid state flowable or pourable material, with a suction channel having mold, from which the mold after cooling and solidification of the plastic is removable.
Aus der DE-OS 32 39 979 ist eine Vorrichtung der vorstehenden Art mit einem nicht näher beschriebenen Formwerkzeug bekannt, das lediglich die Herstellung einfacher Gießformen ermöglicht.From DE-OS 32 39 979 is a device of the above Kind known with a mold not described in detail, that only allows the production of simple molds.
Bekannt ist außerdem aus der US-PS 32 90 418 eine Vorrichtung zum Vakuumformen einer Folie aus thermoplastischem Kunststoff zu schlüsselförmigen Behältern mit gewellten Rändern. Bei die ser Vorrichtung wird ein Formwerkzeug verwendet, das von ei nem ebenfalls schlüsselförmigen Stützteil und einem in diesen eingelegten wiederum schüsselförmigen Formteil gebildet wird. Der Formteil dieses Formwerkzeuges besteht aus elastischem Material und ist nach dem Abkühlen und Verfestigen der Kunst stoffolie von dieser trennbar.A device is also known from US-PS 32 90 418 for vacuum forming a film made of thermoplastic to key-shaped containers with wavy edges. At the This device uses a mold that is available from egg nem also key-shaped support part and one in this inserted bowl-shaped molding is formed. The molded part of this mold consists of elastic Material and is after cooling and solidifying the art separable from this.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der zuerst genannten Art dahingehend auszugestalten, daß sie mit einfachen Mitteln eine wirtschaftliche Fertigung auch komplizierter Gegenstände mittels billig herstellbarer, ent sprechend komplizierter Gießformen ermöglicht. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß für das Vakuumformen einer mindestens eine Hinterschneidung aufweisenden Gießform das Formwerkzeug einen formfesten zylindrischen Stützkern und einen den Stützkern umgebenden, als Vakuumform für die Gieß form dienenden formsteifen, aus einem elastischen Werkstoff bestehenden Mantel mit Saugkanälen aufweist, wobei der Mantel zum Abnehmen der Gießform von dem Stützkern trennbar ist.The invention has for its object a device of the first-mentioned kind in such a way that they Economical production with simple means complicated objects by means of cheaply manufactured, ent complex molds. This task is solved according to the invention in that for vacuum forming a mold having at least one undercut the mold has a rigid cylindrical support core and one surrounding the support core, as a vacuum mold for the casting form-serving rigid, made of an elastic material existing jacket with suction channels, the jacket is separable from the support core for removing the casting mold.
Im Hinblick auf die US-PS 32 90 418 wird für die generelle Ausbildung eines Formwerkzeuges aus einem formfesten Stütz teil und einem aus elastischem Material bestehenden Formteil kein selbständiger Schutz begehrt. With regard to US-PS 32 90 418 is for the general Formation of a mold from a dimensionally stable support part and a molded part made of elastic material no independent protection is sought.
Der Gegenstand der Erfindung wird nach folgend anhand der Zeichnung erläutert. Es zeigtThe subject matter of the invention becomes explained below with reference to the drawing. It shows
Fig. 1 im Schnitt schematisch die Seitenansicht einer Vorrichtung zum Vakuumformen einer Folie aus thermoplastischem Material mit Hilfe eines zweiteiligen Formwerkzeuges vor dem Verformungs vorgang; Figure 1 in section schematically the side view of a device for vacuum forming a film made of thermoplastic material with the help of a two-part molding tool before the deformation process.
Fig. 2 im Schnitt die Seitenansicht des Formwerkzeuges der Vorrichtung nach Fig. 1 nach erfolgter Verformung der Folie; FIG. 2 shows a sectional side view of the molding tool of the device according to FIG. 1 after the film has been deformed;
Fig. 3 im Schnitt die Seitenansicht des Formwerkzeuges nach Fig. 1 und 2 nach Trennung der Werkzeugteile voneinander; . Fig. 3 is a sectional side view of the mold of Figures 1 and 2, after separation of the tool parts from each other;
Fig. 4 im Schnitt die Seitenansicht einer hergestellten Gießform nach deren Trennung vom aus elastischen Material bestehenden Mantel des Formwerkzeuges; FIG. 4 shows in section the side view of a casting mold manufactured according to their separation from the group consisting of elastic material shell of the mold;
Fig. 5 einen Schnitt durch die völlig vom Werkzeug entfernte Gießform; Figure 5 is a section through the fully removed from the tool die.
Fig. 6 das Füllen der Gießform gemäß Fig. 5 mit einem erstarrungsfähigen Material, wie z. B. einem aus zwei Komponenten bestehenden Silikonkautschuk und Fig. 6 shows the filling of the casting mold of FIG. 5 with a capable of solidifying material such. B. a two-component silicone rubber and
Fig. 7 das Trennen der Gießform von einem aus dem erstarrten Material gebildeten Fertigprodukt. Fig. 7 shows the separation of the mold from a carrier formed from the solidified material finished product.
In Fig. 1 ist 1 ein in Richtung des Doppelpfeiles 2 auf- und abbewegbarer Halter für eine Reihe von Infrarotstrahlern 3, die zur Plastifizierung einer thermoplastischen Kunststoffolie 4 dienen.In FIG. 1, 1 is a holder which can be moved up and down in the direction of the double arrow 2 for a series of infrared radiators 3 which are used for plasticizing a thermoplastic film 4 .
5 ist der Träger eines formfesten Stützkernes 6 und eines diesem umgebenden Mantel 7. Der Stützkern 6 und der Mantel 7 bilden zusammen ein Formwerkzeug, das in Richtung des Doppelpfeiles 8 hin- und herbewegbar ist. 5 is the carrier of a dimensionally stable support core 6 and a jacket 7 surrounding it. The support core 6 and the jacket 7 together form a molding tool which can be moved back and forth in the direction of the double arrow 8 .
Der formfeste Stützkern 6 besteht in bekannter Weise aus einem po rösen Material, während der Mantel 7 aus Gummi oder Silikon kautschuk hergestellt ist und Saugkanäle 9 zum Aufbau eines Vakuums an seiner Außenfläche aufweist. An einen das Ende eines Kanals 10 umschließenden Stutzen 11 des Trägers 5 läßt sich eine nicht dargestellte Vakuumpumpe anschließen.The dimensionally stable support core 6 consists in a known manner of a po porous material, while the jacket 7 is made of rubber or silicone rubber and has suction channels 9 for building a vacuum on its outer surface. A vacuum pump (not shown) can be connected to a nozzle 11 of the carrier 5 which surrounds the end of a channel 10 .
Mit Hilfe der Infrarotstrahler 3 wird die Kunststoffolie 4 er wärmt. Nachdem sie hinreichend plastifiziert ist, wird der Träger 5 mit dem Formwerkzeug nach oben gegen die Kunststoffolie 4 bewegt. Diese legt sich infolge des Vakuums an die Außenfläche des Mantels 7 an (Fig. 2). Auf die beschriebene Art und Weise gelangen Teile der Kunststoffolie in den Bereich von Hinterschneidungen 12.With the help of the infrared heater 3 , the plastic film 4 is warmed. After it has been sufficiently plasticized, the carrier 5 is moved upward against the plastic film 4 with the molding tool. As a result of the vacuum, this lies against the outer surface of the jacket 7 ( FIG. 2). In the manner described, parts of the plastic film reach the area of undercuts 12 .
Nach Abkühlung der Kunststoffolie 4 wird der Mantel 7 vom Stütz kern 6 und vom Träger 5 getrennt (Fig. 3). After cooling of the plastic film 4 , the jacket 7 is separated from the support core 6 and from the carrier 5 ( Fig. 3).
Der formsteife aber elastische Mantel 7 liegt nunmehr nach Art einer "Innenmaske" gegen die Innenwand der Kunst stoffolie 4 an, die nunmehr eine starre Gießform 13 bildet. Auf Grund der Elastizität des Mantels 7 ist es möglich, diesen von der erstarrten Kunststoffolie zu lösen, so daß man, wie die in Fig. 4 gezeigt ist, eine schalenförmige Gießform 13 erhält.The rigid but elastic jacket 7 is now in the manner of an "inner mask" against the inner wall of the plastic film 4 , which now forms a rigid mold 13 . Due to the elasticity of the jacket 7 , it is possible to detach it from the solidified plastic film, so that, as is shown in FIG. 4, a bowl-shaped casting mold 13 is obtained.
In den Fig. 5 bis 7 ist eine Möglichkeit zur Nutzung der Gieß form 13 zur Herstellung eines Gegenstandes gezeigt. In die Gießform 13 wird ein schütt- oder fließ fähiges Gut eingefüllt, das aus dem nichtfesten Zustand in einen festen Zustand überführbar ist, und zwar entweder durch Aushärten oder aber durch thermische oder andere Einwirkung. Je nach Art des herzustellenden Gegenstandes kann die Gießform am jeweiligen Ge genstand 14 verbleiben oder aber unter Plastifi zierung z. B. mit Hilfe einer Heißluftpistole 15 von diesem getrennt werden.In Figs. 5 to 7 a possibility to use the casting mold 13 is shown for the production of an article. A pourable or flowable material is poured into the mold 13 , which can be converted from the non-solid state into a solid state, either by curing or by thermal or other action. Depending on the type of object to be manufactured, the casting mold can remain on the respective object 14 or, for example, under plasticization. B. with the help of a hot air gun 15 from this.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863640710 DE3640710A1 (en) | 1986-11-28 | 1986-11-28 | Process for vacuum forming thermoplastic material and mould for carrying out the process and process for further processing mouldings produced by vacuum forming |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863640710 DE3640710A1 (en) | 1986-11-28 | 1986-11-28 | Process for vacuum forming thermoplastic material and mould for carrying out the process and process for further processing mouldings produced by vacuum forming |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3640710A1 DE3640710A1 (en) | 1988-06-09 |
DE3640710C2 true DE3640710C2 (en) | 1989-05-18 |
Family
ID=6315013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863640710 Granted DE3640710A1 (en) | 1986-11-28 | 1986-11-28 | Process for vacuum forming thermoplastic material and mould for carrying out the process and process for further processing mouldings produced by vacuum forming |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3640710A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4208565A1 (en) * | 1991-11-29 | 1993-09-23 | Roeder & Spengler Stanz | PUNCHING KNIFE |
AUPN005394A0 (en) * | 1994-12-14 | 1995-01-12 | Hunter, Joseph | Membrane machine |
US10059050B2 (en) | 2014-12-02 | 2018-08-28 | GM Global Technology Operations LLC | Method of vacuum forming an object using a flexible mold and an apparatus for vacuum forming an object |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290418A (en) * | 1960-10-12 | 1966-12-06 | Harold E Best | Method and mold for making thinwalled containers |
DE3239979A1 (en) * | 1981-12-23 | 1983-06-30 | VEB Schwermaschinenbau "Karl Liebknecht" Magdeburg-Kombinat für Dieselmotoren und Industrieanlagen, DDR 3011 Magdeburg | Vacuum transfer moulding station and process for heating a plastics film, especially for manufacturing a casting mould moulded under vacuum |
-
1986
- 1986-11-28 DE DE19863640710 patent/DE3640710A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3640710A1 (en) | 1988-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: BROEKER, REINHARD, 48431 RHEINE, DE WEDI, HELMUT, |
|
8381 | Inventor (new situation) |
Free format text: INCEL, ZEKI DIPL.-ING., 48369 SAERBECK, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: BROEKER, REINHARD, 48431 RHEINE, DE WEDI, STEPHAN, |
|
8339 | Ceased/non-payment of the annual fee |