DE1201971B - Heatable and coolable mold - Google Patents
Heatable and coolable moldInfo
- Publication number
- DE1201971B DE1201971B DES80052A DES0080052A DE1201971B DE 1201971 B DE1201971 B DE 1201971B DE S80052 A DES80052 A DE S80052A DE S0080052 A DES0080052 A DE S0080052A DE 1201971 B DE1201971 B DE 1201971B
- Authority
- DE
- Germany
- Prior art keywords
- metal skin
- mold
- heating
- mold according
- press 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000004049 embossing Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003466 welding Methods 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- 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
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Heiz- und kühlbare Preßform Die Erfindung betrifft eine Preßform zum Massenherstellen von solchen Preßlingen (beispielsweise Schallplatten), die während des Preßvorganges erwärmt oder auch gekühlt werden müssen oder beides nacheinander, wobei sie aber nicht mit dem zur Erwärmung oder Abkühlung der Form benutzten Temperaturmedium (herkömmlich beispielsweise Wasser oder Ö1) in Berührung kommen dürfen.Heatable and coolable mold The invention relates to a mold for Mass production of such compacts (e.g. records), which during of the pressing process have to be heated or cooled, or both in succession, but not with the temperature medium used to heat or cool the mold (conventionally for example water or oil) may come into contact.
Es ist bekannt, für die Erwärmung der Preßform Dampf oder erhitztes Öl oder andere geeignete Medien zu verwenden. Auch ist bekannt, das Prinzip der Erwärmung eines elektrischen Leiters bei Stromdurchfluß hierfür anzuwenden. In diesem Falle ist in die Preßform in bekannter Weise ein elektrischer Leiter (Widerstandsdraht) isoliert eingebettet, der die bei Stromdurchfluß in ihm erzeugte Wärme an die Preßform ableitet, in die er eingebettet ist. Auch in diesem Falle erfolgt eine notwendige Kühlung der Preßform, z. B. zur Herstellung von Schallplatten, in bekannter Weise meist mit kaltem Wasser. It is known to use steam or heated mold for heating the mold Use oil or other suitable media. Also known is the principle of To use heating of an electrical conductor when current flows through it. In this Trap is in the mold in a known way an electrical conductor (resistance wire) insulated embedded, which transfers the heat generated in it when current flows through it to the mold derives in which it is embedded. In this case, too, a necessary one takes place Cooling the mold, e.g. B. for the production of records, in a known manner mostly with cold water.
Da stets in der massiven Preßform erhebliche Wärmemengen gespeichert werden, ist der Kühlwasserbedarf groß.Considerable amounts of heat are always stored in the massive mold the need for cooling water is great.
Weiterhin ist bekannt, die Erwärmung von Thermoplasten, wie sie z. B. auch für die Herstellung von Schallplatten verwendet werden, in einem elektrischen Hochfrequenzfeld vorzunehmen (Kapazitätserwärmung). It is also known that the heating of thermoplastics such. B. can also be used for the production of records, in an electric Carry out high-frequency field (capacity heating).
Dies geschieht unter anderem beim Verschweißen von zwei oder mehr Kunststoffolien oder zur Prägung der sonst glatten Oberfläche dieser Folien mit einer lederähnlichen Narbung. This happens, among other things, when welding two or more Plastic foils or for embossing the otherwise smooth surface of these foils with a leather-like grain.
Wollte man dieses Verfahren zur Erwärmung des Kunstharzes an einer Schallplatte anwenden, so wären sehr unwirtschaftliche, teure Hochfrequenzgeneratoren notwendig. Darüber hinaus wäre die Steuerung des HF-Stromes und seiner Begrenzung bei der notwendigen Annäherung der beiden Elektroden (die den Kondensator bilden müßten) auf Abstände von z. B. kleiner gleich 1 mm in der Praxis, d. h. in der Serienfertigung, nicht möglich. Der Thermoplast würde sich chemisch zersetzen und die Qualität der so gefertigten Platten den zu fordernden Ansprüchen nicht genügen. If you wanted this method of heating the resin on a Using a record would be very uneconomical, expensive high-frequency generators necessary. In addition, the control of the HF current and its limitation would be at the necessary approach of the two electrodes (which form the capacitor would have to) at distances of z. B. less than or equal to 1 mm in practice, d. H. in series production, not possible. The thermoplastic would chemically decompose and the quality of the panels manufactured in this way do not meet the requirements.
Es ist auch bekannt, von einem nach dem Prinzip der elektrischen Widerstandsheizung erwärmten Strahler Wärme auf eine Prägefolie zu übertragen, und zwar zum Zwecke der Veränderung der Kunststoffolienoberfläche. Hierbei handelt es sich außerdem um Endlos-Prägefolienbänder und nicht, wie bei der Herstellung der Schallplatten, um einzelne Prägematrizen, die dem jeweiligen z. B. musika- lischen Inhalt der Platten entsprechend ausgewechselt werden. It is also known of an electric principle Resistance heating to transfer heated radiators heat to an embossing foil, and although for the purpose of changing the plastic film surface. This is what it is are also endless embossing foil belts and not, as in the production of the Records to individual embossing matrices that correspond to the respective z. B. music lish The contents of the plates can be changed accordingly.
Beispielsweise aus Gründen der Verbesserung der Energiebilanz oder denen einer schnelleren Erwärmung oder aus anderen Gründen ist anzustreben die Erwärmung nur an der Berührungsfläche zwischen Preßform und Preßling zu erzeugen. Da zur Herstellung von z. B. Schallplatten in die eigentliche Preßform üblicherweise sogenannte Matrizen - neuerdings als dünne Nickelmetallhaut - eingelegt werden, auf die in konventioneller Herstellungsweise durch Berührung die in die Preßform eingeführte Wärme übertragen wird, so bietet es sich geradezu an, diese Nickelhaut in einen elektrischen Stromkreis einzuschalten und mittels des hindurchgetriebenen Stromes nach dem Gesetz N= 12. R zu erwärmen. For example, for reasons of improving the energy balance or those of faster heating or for other reasons, the aim should be heating to be generated only at the contact surface between the mold and the compact. Because for the production from Z. B. records in the actual mold usually so-called matrices - recently as a thin nickel metal skin - are inserted onto the conventional Manufacturing method by touching the heat introduced into the mold it makes sense to put this nickel skin in an electrical circuit to be switched on and by means of the current driven through according to the law N = 12. R to heat.
In diesem Falle ist es dann möglich, die hineingeschickte elektrische Leistung nahezu an der und nur an der Stelle in Wärme umzusetzen, an der sie auch aus Gründen der Abformung benötigt wird. In this case it is then possible to use the electrical To convert power into heat almost at and only at the point where it is is required for reasons of the impression.
Eine nach diesen Gedankengängen aufgebaute, dem Erfindungsgedanken entsprechende Form besteht also aus einem Formkörper, der das abzuformende Profil weitgehend enthält und der ferner in seinem Inneren in bekannter Weise Ring- oder Spiralkanäle zum Transport eines Kühlmediums enthält. One based on these lines of thought, the idea of invention The corresponding shape therefore consists of a molded body that holds the profile to be molded largely contains and also in its interior in a known manner ring or Contains spiral channels for transporting a cooling medium.
Der weitgehend der gewünschten Form des Preßlings entsprechende, in die Preßform eingebaute Hohlraum wird aber erst durch die dünne Metallhaut, die erfindungsgemäß gleichzeitig den Stromtransport übernimmt, auf die für den Preßling benötigte endgültige Form aufgefüllt.The largely corresponding to the desired shape of the compact, in the mold built-in cavity is only through the thin metal skin, which according to the invention at the same time takes over the current transport, to that for the compact needed final shape padded.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES80052A DE1201971B (en) | 1962-06-23 | 1962-06-23 | Heatable and coolable mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES80052A DE1201971B (en) | 1962-06-23 | 1962-06-23 | Heatable and coolable mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1201971B true DE1201971B (en) | 1965-09-30 |
Family
ID=7508630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES80052A Pending DE1201971B (en) | 1962-06-23 | 1962-06-23 | Heatable and coolable mold |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1201971B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444880A1 (en) * | 1994-09-27 | 1996-03-28 | Pelz Ernst Empe Werke | Method for producing a molded part, in particular an interior lining or the like for motor vehicles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR902841A (en) * | 1943-05-10 | 1945-09-13 | Dynamit Nobel Ag | Process for polishing, matting (frosting), stamping, etc. continuous belts in thermoplastic synthetics |
| GB576097A (en) * | 1942-10-05 | 1946-03-19 | Gen Electric Co Ltd | Improvements in methods and apparatus for subjecting materials to high-frequency electrical oscillations |
-
1962
- 1962-06-23 DE DES80052A patent/DE1201971B/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB576097A (en) * | 1942-10-05 | 1946-03-19 | Gen Electric Co Ltd | Improvements in methods and apparatus for subjecting materials to high-frequency electrical oscillations |
| FR902841A (en) * | 1943-05-10 | 1945-09-13 | Dynamit Nobel Ag | Process for polishing, matting (frosting), stamping, etc. continuous belts in thermoplastic synthetics |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444880A1 (en) * | 1994-09-27 | 1996-03-28 | Pelz Ernst Empe Werke | Method for producing a molded part, in particular an interior lining or the like for motor vehicles |
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