DE1479074A1 - Method and device for vacuum forming objects made of thermoplastic material - Google Patents
Method and device for vacuum forming objects made of thermoplastic materialInfo
- Publication number
- DE1479074A1 DE1479074A1 DE19631479074 DE1479074A DE1479074A1 DE 1479074 A1 DE1479074 A1 DE 1479074A1 DE 19631479074 DE19631479074 DE 19631479074 DE 1479074 A DE1479074 A DE 1479074A DE 1479074 A1 DE1479074 A1 DE 1479074A1
- Authority
- DE
- Germany
- Prior art keywords
- vacuum
- tool
- mold
- base plate
- hot
- 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.)
- Pending
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C33/048—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using steam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C11/00—Portable extinguishers with manually-operated pumps
-
- 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
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
-
- 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
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F69/00—Ironing machines not otherwise provided for
- D06F69/04—Ironing machines not otherwise provided for with relatively-sliding flat surfaces
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1658—Cooling using gas
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Textile Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Bei der Herstellung von Vakuumformwerkzeugen für die Verwendung bei thermoplastischem Plattenmaterial ist es gebräuchlich, unabhängige Systeme für die Zirkulation heißer Flüssigkeit zum Erhitzen des Werkzeuges und für Bereitstellung von Vakuum an der Formfläche des Formwerkzeuges vorzusehen,, Letzteres geschieht gewöhnlich durch Vakuum-Entlüftungslöcher, die sich vom Inneren des Werkzeuges zu einer Vielzahl, über die Pormflache verteilte Stellen, erstrecken. Die Bereitstellung der zwei unabhängigen Systeme ergibt ein kompliziertes Formwerkzeug, das deshalb in der Herstellung teuer ist.In the manufacture of vacuum forming tools for use with thermoplastic sheet material it is common to have independent systems for the circulation of hot liquid for heating the tool and to provide vacuum to the mold surface of the mold, the latter usually being done through vacuum ventilation holes, which extend from the inside of the tool to a large number over the Pormflache distributed places, extend. Providing the two independent systems results in a complicated one Molding tool, which is therefore expensive to manufacture.
909806/0942909806/0942
Gegenstand der Erfindung ist ein neues Verfahren des Vakuumformens und eine einfa chere, und deshalb "billigere, Ausführung eines zu seiner Durchführung dienenden Vakuumformwerkzeuges.The invention relates to a new process of vacuum forming and a simpler one, and therefore "Cheaper, execution of a vacuum forming tool used for its implementation.
Gemäß der Erfindung besteht das neue Verfahren des Vakuumformens eines Gegenstandes aus thermoplastischem Material darin, daß das hohle Formwerkzeug durch in ihm zirkulierende heike Gase oder Dämpfe aufgeheizt, die Heißgas- oder Dampfzufuhr abgestellt, das heiße Werkzeug auf die durch das 'werkzeug zu verformende Platte aus thermoplastischem Material aufgebracht und das Werkzeug dann an eine Vakuumleitung angeschlossen wird, so daß die thermoplastische Platte irr. weichen Zustand in engen Formkontakt mit dem heißen Werkzeug gehalten wird.According to the invention, the new method of vacuum forming an article is made of thermoplastic Material in that the hollow mold is heated by hot gases or vapors circulating in it, the hot gas or steam supply turned off, the hot tool on the plate to be deformed by the tool made of thermoplastic material and the tool is then connected to a vacuum line, so that the thermoplastic plate is irr. soft state is kept in close mold contact with the hot tool.
Das zur Durchführung des neuen Verfahrens dienende Formwerkzeug zum Vakuumformen besteht aus einer Grundplatte und einem Hohlkörper, der an der Platte befestigt ist, wobei der Hohlkörper eine Vielzahl von Entlüftungslöchern hat, die sich von der Formfläche an der Außenseite des Hohlkörpers in das Innere desselben erstrecken, und die Grundplatte öffnungen hat, die sich bis in das Innere des Hohlkörpers erstrecken, und Anschlüsse sowohl an Vakuum als auch an Heißgase oder Dämpfe hat, die unter einem Druck stehen, der größer als der Außendruck ist.The forming tool for vacuum forming, which is used to carry out the new process, consists of a Base plate and a hollow body which is attached to the plate, wherein the hollow body has a plurality of ventilation holes which extend from the molding surface on the outside of the hollow body into the interior thereof, and the base plate has openings which extend into the interior of the hollow body, and connections both in vacuum and in hot gases or vapors that are under a pressure that is greater than the external pressure is.
Die Erfindung ist nachstehend an Hand der Zeichnung näher erläutert, die zwei Ausführungen von Formen im Querschnitt wiedergibt.The invention is explained in more detail below with reference to the drawing, the two versions of forms in Reproduces cross-section.
SAD OFHG'NAL 909806/0942SAD OFHG'NAL 909806/0942
Pig. 1 zeigt ein Formwerkzeug 1 für das Vakuumformen von Formen aus thermoplastischem La-terial für die Herstellung von Schaumgummi.Pig. Fig. 1 shows a mold 1 for vacuum forming of molds made of thermoplastic material for the production of foam rubber.
Das Formwerkzeug 1 umfaßt eine Grundplatte 2 für die Montage auf der Plattform einer Vekuumverformmaschine (nicht gezeigt). Ein hohler Formkörper 3f der eine Formfläche 4, einen von einem Ansatz 5 umgebenen Rand aufweist, ist aus .1/4 Zoll dickem Aluminium hergestellt und so montiert, daß der Ansatz 5 in Kontakt mit Λ der Grundplatte ist, wobei ein hohler Innenraum 6 zwischen der Grundplatte 2 und dem Formteil 3 gebildet wird.The molding tool 1 comprises a base plate 2 for mounting on the platform of a vacuum forming machine (not shown). A hollow molded body 3 f which has a mold surface 4, an edge surrounded by a projection 5, is made of .1 / 4 inch thick aluminum and mounted so that the projection 5 is in contact with Λ of the base plate, with a hollow interior 6 is formed between the base plate 2 and the molded part 3.
Der Formkörper 3 ist rcit einer Anzahl Entlüftungslöchern 7 versehen, die sich von dem hohlen Inneren 6 bis zur Formfläche 4 des Formkörpers erstrecken. Die Entlüftungslöcher 7 sind in Abständen über die gesamte Formfläche 4 verteilt»The molded body 3 is provided with a number of vent holes 7, which extend from the hollow interior 6 to the molding surface 4 of the molded body. the Vent holes 7 are spaced over the entire mold surface 4 »
Die Grundplatte 2 ist mit einer Luftzufuhr-Leitung 8 für den Anschluß an die Heißluftνersorgung, oder für den Anschluß an die Kaltluftversorgung, wobei beide Versorgungsleitungen Luft mit einem Druck, der i The base plate 2 is provided with an air supply line 8 for connection to the hot air supply, or for connection to the cold air supply, both supply lines having air at a pressure of i
größer als der Außendruck ist, liefern, und einem Paar Luftabfuhrleitungen 9 versehen« Die Leitungen 8 und 9 sind mit Absperrventilen 10 bzw. 11 versehen. Die Grundplatte ist ferner mit einer Leitung 12, die ein Absperrventil 13 hat, versehen, die mit dem Eingang einer Vakuumpumpe verbunden ist«is greater than the external pressure, and provided a pair of air discharge lines 9 «The lines 8 and 9 are provided with shut-off valves 10 and 11, respectively. The base plate is also provided with a line 12, which has a shut-off valve 13, which is connected to the inlet of a vacuum pump connected is"
Das Verfahren des Vakuumverformens unter Verwendung des Formwerkzeuges 1 wird nun beschrieben.The method of vacuum forming using the die 1 will now be described.
bM, owe»*»- bM , owe »*» -
909806/0942909806/0942
Bei geschlossenem Absperrventil 13 und offenen Absperrventilen 10 und 11 wird durch die Leitung 8 Heißluft eingeleitet, die im hohlen Innenteil 6 zirkuliert und durch die Entlüftungslöcher 7 und die Abgangsleitung 9 ausströmte Wenn das ferkzeug 1 auf eine ausreichend hohe Temperatur aufgeheizt ist, werden die Ventile 10 und 11 geschlossen, um den Heißluftfluß abzusperren. Das heiße Werkzeug wird auf eine Platte thermoplastischen Materials aufgebracht, die von der Vakuum-Verform-™ maschine gehalten wird, um die Platte zu erhitzen, und so zu erweichen sowie nach der Formplatte 4 zu verformen. Dann wird das Ventil 13 geöffnet, um die Luft im hohlen Inneren 6 mittels der Vakuum-Pumpe zu entfernen, dabei greift das Vakuum durch die Entlüftungslöcher 7 an und hält somit die erweichte thermoplastische Platte in engem Kontakt mit der Formfläche 4 des heißen Werkzeuges 1.When the shut-off valve 13 is closed and the shut-off valves 10 and 11 are open, hot air is passed through the line 8 initiated, which circulates in the hollow inner part 6 and through the vent holes 7 and the outlet line When the tool 1 is heated to a sufficiently high temperature, the valves 10 and 11 closed to shut off the flow of hot air. The hot tool is thermoplastic onto a platen Material applied by the Vacuum Deform ™ machine is held to heat the plate, and so to soften and to deform after the mold plate 4. Then the valve 13 is opened to remove the air in the hollow interior 6 by means of the vacuum pump, in the process, the vacuum engages through the ventilation holes 7 and thus holds the softened thermoplastic sheet in close contact with the mold surface 4 of the hot tool 1.
Wenn der Formvorgang beendet ist, wird das Vakuum durch Schließen des Ventils 13 und Öffnen der Ventile 10 und 11 aufgehoben, und die Leitung 8 kann - falls erforderlich - an die unter Druck stehende KaIt-" luftversorgung angeschlossen v/erden, um Kaltluft durch die Leitungen 8 und 9 in das Innere des Werkzeuges 1 zu schicken, um so das Kühlen des geformten Produktes zu unterstützen.When the molding process is finished, the vacuum is released by closing the valve 13 and opening the Valves 10 and 11 lifted, and the line 8 can - if necessary - to the pressurized KaIt- " Air supply connected v / earth to cold air through lines 8 and 9 into the interior of the tool 1 to assist in cooling the molded product.
Bei der Abänderung der Erfindung, die in Hg. gezeigt ist, umfaßt das Vakuum-Formwerkzeug 1a eine Grundplatte 2a und einen Formkörper 3a, der mit Entlüftungslöchern 7 versehen ist. Jedoch ist das Werkzeug 1a kleiner als das Werkzeug 1 9 so daß es als unnötig angesehen wird, Aty-angsleitungen zusätzlich zu der Zufuhr-In the modification of the invention shown in Hg., The vacuum molding tool 1 a comprises a base plate 2 a and a molded body 3 a which is provided with vent holes 7. However, the tool 1a is less than 1 9 so that it is considered to be unnecessary as the tool-Aty angsleitungen addition to the feed
90980 67 094290 980 67 0942
leitung 10 und der Vakuum-Leitung 12 vorzusehen« Die Entlüftungslöcher 7 stellen einen ausreichenden Auslaß für die zirkulierende Heiß- oder Kaltluft dar„line 10 and the vacuum line 12 to be provided «The ventilation holes 7 provide a sufficient outlet for the circulating hot or cold air "
Patentansprüche:Patent claims:
909806/0942909806/0942
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB597262 | 1962-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1479074A1 true DE1479074A1 (en) | 1969-02-06 |
Family
ID=9806065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19631479074 Pending DE1479074A1 (en) | 1962-02-16 | 1963-02-13 | Method and device for vacuum forming objects made of thermoplastic material |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE628528A (en) |
CH (1) | CH408394A (en) |
DE (1) | DE1479074A1 (en) |
NL (1) | NL288965A (en) |
-
0
- BE BE628528D patent/BE628528A/xx unknown
- NL NL288965D patent/NL288965A/xx unknown
-
1963
- 1963-02-13 DE DE19631479074 patent/DE1479074A1/en active Pending
- 1963-02-15 CH CH197363A patent/CH408394A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE628528A (en) | |
CH408394A (en) | 1966-02-28 |
NL288965A (en) |
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