DE1131365B - Device for the production of wax models for the precision casting process with lost models - Google Patents
Device for the production of wax models for the precision casting process with lost modelsInfo
- Publication number
- DE1131365B DE1131365B DEN17595A DEN0017595A DE1131365B DE 1131365 B DE1131365 B DE 1131365B DE N17595 A DEN17595 A DE N17595A DE N0017595 A DEN0017595 A DE N0017595A DE 1131365 B DE1131365 B DE 1131365B
- Authority
- DE
- Germany
- Prior art keywords
- wax
- models
- heat exchanger
- coil
- casting process
- 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
- 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
- B29C45/20—Injection nozzles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0028—Instruments or appliances for wax-shaping or wax-removing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- 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
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/241—Moulding wax
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
Vorrichtung zur Herstellung von Wachsmodellen für das Präzisionsgießverfahren mit verlorenen Modellen Die Erfindung bezieht sich auf eine Vorrichtung zur Herstellung von Wachsmodellen zum Präzisionsgießen mit einem verlorenen Wachsmodell, bei dem Wachs in Formen hineingepreßt wird. Device for the production of wax models for the precision casting process with lost models The invention relates to an apparatus for manufacturing from wax models to precision casting with a lost wax model in which Wax is pressed into molds.
Es ist bekannt, das Wachs zur Herstellung von verlorenen Wachsmodellen in einem Behälter zu schmelzen, der durch Beheizungselemente auf der richtigen Temperatur gehalten wird. It is known to use wax for the production of lost wax models to melt in a container that is kept at the right temperature by heating elements is held.
Um örtliche Üb erhitzung zu verhüten, werden diese Behälter manchmal indirekt geheizt, z. B. durch ein Flüssigkeitsbad, wobei der Umlauf der Flüssigkeit oder des zu schmelzenden Materials eine gleichmäßige Temperatur verbürgen soll. To prevent local overheating, these containers are sometimes indirectly heated, e.g. B. by a liquid bath, whereby the circulation of the liquid or the material to be melted should guarantee a uniform temperature.
Es ist bekannt, daß es vorteilhaft ist, das Wachs in einigermaßen plastischem Zustand, also nicht völlig geschmolzen, in die Formen einzupressen. Dies ergibt Wachsmodelle von größerer Maßhaltigkeit. Bei geringen Temperaturänderungen treten aber bereits große Unterschiede in der Viskosität des plastischen Wachses auf, so daß es sehr wichtig ist, die Temperatur des Wachses innerhalb sehr enger Grenzen konstant zu halten. Zur Einhaltung dieser Bedingung soll die Vorrichtung nach der Erfindung dienen. It is known that it is advantageous to use the wax in some degree plastic state, i.e. not completely melted, to be pressed into the molds. This results in wax models of greater dimensional accuracy. With small changes in temperature However, there are already large differences in the viscosity of the plastic wax so it is very important to keep the temperature of the wax inside very close To keep boundaries constant. To comply with this condition, the device serve according to the invention.
Nach der Erfindung ist nun die Vorrichtung zur Herstellung solcher Wachsmodelle für das Präzisionsgießverfahren, die einen heizbaren Vorratsbehälter für das geschmolzene Wachs und einen mit einer Kühlflüssigkeit gefüllten und mit einer zur Düse führenden Rohrschlange versehenen Wärme aus tauscher aufweist, durch die das Wachs in plastischem Zustand in die Form gepreßt wird, dadurch gekennzeichet, daß der Wärmeaustauscher mit einer Vorrichtung zum dauernden Kühlen der in dem Wärmeaustauscher vorhandenen Flüssigkeit und außerdem mit einer im Wärmeaustauscher angebrachten Vorrichtung zum regelbaren Zuführen von Wärme zu der Kühlflüssigkeit versehen ist. According to the invention is now the device for making such Wax models for the precision casting process that have a heatable storage container for the melted wax and one filled with a cooling liquid and with having a coil provided with heat exchanger leading to the nozzle which the wax is pressed into the mold in a plastic state, characterized by that the heat exchanger with a device for permanent cooling of the heat exchanger existing liquid and also with one attached in the heat exchanger Device for controllably supplying heat to the cooling liquid is provided.
Es hat sich gezeigt, daß sich die Wärmezufuhr einfacher und genauer als die Wärmeabfuhr regeln läßt. Durch Kühlung wird die Wärmeabfuhr im wesentlichen konstant gehalten, während die Wärmezufuhr gesteigert werden muß, wodurch der Regelmechanismus leichter anspricht. It has been shown that the supply of heat is easier and more accurate than can regulate the heat dissipation. The heat dissipation is essentially achieved by cooling kept constant while the heat supply must be increased, whereby the control mechanism responds more easily.
In weiterer Ausgestaltung der Erfindung ist die das Wachs führende schraubenlinienförmige Rohrschlange an einem Blechzylinder befestigt, der in gewissem Abstand von einem schraubenlinienförmigen Heizelement umgeben ist, das ebenso wie die Rohrschlange innerhalb des Wärmeaustauschers angeordnet ist, in dessen Behältermantel sich eine schraubenlinienförmige, kühlmitteldurohflossene Kühlschlange befindet. In a further embodiment of the invention, the one that carries the wax helical pipe coil attached to a sheet metal cylinder, which in a certain way Distance is surrounded by a helical heating element, which as well as the coil is arranged inside the heat exchanger, in its container jacket there is a helical, coolant-flow cooling coil.
Die Zeichnung zeigt schematisch und im Längsschnitt ein Ausführungsbeispiel einer Vorrichtung nach der Erfindung. The drawing shows an exemplary embodiment schematically and in longitudinal section a device according to the invention.
Ein Druckbehälter 1 für geschmolzenes Wachs hat einen Abfluß 2, der durch einen Hahn 3 mit einem zu einem Verteilungsstück 5 führenden Kanal 4 in Verbindung steht. Die Enden 6 und 7 einer die Wärme gut leitenden Rohrschlange 8 sind im Verteilungsstück 5 befestigt. A pressure vessel 1 for molten wax has a drain 2, the through a tap 3 with a channel 4 leading to a distribution piece 5 in connection stands. The ends 6 and 7 of a pipe coil 8 which conducts heat well are in the distribution piece 5 attached.
Ein Kanal 9 in diesem Verteiler 5 führt zu einer Preßdüse 10, die mit einer nicht dargestellten Form zusammenarbeitet, in welche das Wachs einzupressen ist. A channel 9 in this manifold 5 leads to a press nozzle 10 which cooperates with a form, not shown, into which the wax is to be pressed is.
Die Rohrschlange 8 ist an einem Blechzylinder 11 befestigt, der durch einen Bügel 12 mit einem, vorzugsweise durchlöcherten, Mantel 13 verbunden ist, der ein schrauhenlinienförmiges Heizelement 14 enthält. Die Teile 5, 8, 11 bis 14 sind in einem Behältermantel 15 untergebracht, der bis zur dargestellten Höhe mit einer Flüssigkeit, z. B. Öl, gefüllt wird, welche einer dauernden Erhitzung standzuhalten vermag. The coil 8 is attached to a sheet metal cylinder 11, which by a bracket 12 is connected to a, preferably perforated, jacket 13, which includes a helical heating element 14. Parts 5, 8, 11 to 14 are housed in a container shell 15, which is up to the height shown a liquid, e.g. B. oil is filled, which withstand constant heating able.
In der Außenwand des Behältermantels 15 befindet sich eine Kühlschlange 16, z. B. aus Kupfer, durch welche Wasser fließt, das das Öl im Behälter ständig kühlt. A cooling coil is located in the outer wall of the container jacket 15 16, e.g. B. made of copper, through which water flows, which the oil in the container constantly cools.
Die Temperatur des Öls wird innerhalb sehr enger Grenzen durch eine regelbare Wärmezufuhr zum Öl durch das Beheizungselement 14 konstant gehalten. The temperature of the oil is controlled within very narrow limits by a controllable heat supply to the oil kept constant by the heating element 14.
Die Regelung kann elektronisch mittels einer geeigneten Schaltungsordnung erfolgen.The regulation can be carried out electronically by means of a suitable circuit arrangement take place.
Das Heizelement 14 ist derart angeordnet, daß im ölbad ein flotter Umlauf durch Thermosiphonwirkung gesichert ist. The heating element 14 is arranged such that a brisk in the oil bath Circulation is secured by thermosiphon effect.
Claims (2)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL3141915X | 1958-12-04 | ||
NL1131365X | 1958-12-04 | ||
NL1243099X | 1958-12-04 | ||
NL233934 | 1958-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1131365B true DE1131365B (en) | 1962-06-14 |
Family
ID=27483658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEN17595A Pending DE1131365B (en) | 1958-12-04 | 1959-12-02 | Device for the production of wax models for the precision casting process with lost models |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH377986A (en) |
DE (1) | DE1131365B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4022862A1 (en) * | 1990-07-18 | 1992-01-23 | Lindner Arno Kg | DEVICE FOR MELTING AND INJECTING WAX FOR PRODUCING WAX PARTS WHEN POURING IN A LOST FORM |
CZ300900B6 (en) * | 2008-01-03 | 2009-09-09 | Vysoké ucení technické v Brne | Tool for making mock-ups, particularly for investment precision casting technologies |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434557A (en) * | 1945-03-23 | 1948-01-13 | Westinghouse Electric Corp | Apparatus for molding wax objects |
-
1959
- 1959-12-01 CH CH8131359A patent/CH377986A/en unknown
- 1959-12-02 DE DEN17595A patent/DE1131365B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434557A (en) * | 1945-03-23 | 1948-01-13 | Westinghouse Electric Corp | Apparatus for molding wax objects |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4022862A1 (en) * | 1990-07-18 | 1992-01-23 | Lindner Arno Kg | DEVICE FOR MELTING AND INJECTING WAX FOR PRODUCING WAX PARTS WHEN POURING IN A LOST FORM |
US5123569A (en) * | 1990-07-18 | 1992-06-23 | Arno Lindner | Device for melting and injecting wax for the manufacture of wax parts in broken-mould casting |
CZ300900B6 (en) * | 2008-01-03 | 2009-09-09 | Vysoké ucení technické v Brne | Tool for making mock-ups, particularly for investment precision casting technologies |
Also Published As
Publication number | Publication date |
---|---|
CH377986A (en) | 1964-05-31 |
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