DE19635034A1 - melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses - Google Patents

melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses

Info

Publication number
DE19635034A1
DE19635034A1 DE1996135034 DE19635034A DE19635034A1 DE 19635034 A1 DE19635034 A1 DE 19635034A1 DE 1996135034 DE1996135034 DE 1996135034 DE 19635034 A DE19635034 A DE 19635034A DE 19635034 A1 DE19635034 A1 DE 19635034A1
Authority
DE
Germany
Prior art keywords
under vacuum
melting
thermoplastics
vacuum
injecting
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.)
Withdrawn
Application number
DE1996135034
Other languages
German (de)
Inventor
Francesco Pedrazzini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1996135034 priority Critical patent/DE19635034A1/en
Publication of DE19635034A1 publication Critical patent/DE19635034A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • A61C13/20Methods or devices for soldering, casting, moulding or melting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • A61C13/20Methods or devices for soldering, casting, moulding or melting
    • A61C13/206Injection moulding

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

The device has a vacuum-tight rhomboid shaped housing in which the thermoplastic is melted, injected and cooled whilst under vacuum conditions. Within the housing, the vessel (3) is held tight by a screw (4) which is operated from outside the body. The thermoplastic is introduced through an opening (10) into the heating chamber (6). A piston (7a) which moves inside the heating chamber is connected at its lower end to the pistons of two pumps (9). Connections (11) are provided for cooling fluid if required. The plastic is injected under a pressure of 2-3 Bar.

Description

Die Erfindung betrifft ein Gerät, das die Arbeitsvorgänge des Schmelzens der thermoplastischen Kunststoffe und das Injizieren der geschmolzenen Masse unter Vacuum gemäß dem Oberbegriff des Anspruches 1 unter Verwendung eines vacuumverdichteten Gehäuses gemäß den nebengeordneten Ansprüchen 2, 3, 4, 5 und 6 ermöglicht.The invention relates to a device that performs the operations of melting of the thermoplastics and injecting the melted Mass under vacuum according to the preamble of claim 1 under Use of a vacuum-sealed housing according to the secondary claims 2, 3, 4, 5 and 6 allows.

Für die bisher bekannten Systeme in der Zahntechnik werden Geräte verwendet, die ohne Vacuum und mit hohem Druck (bis zu 10-12 Bar) arbeiten. Somit sind die Abformungen der Zahnprothesen, die nur mit Gips gestaltet werden können, immer bruchgefährdet.Devices are used for the previously known systems in dental technology used without vacuum and with high pressure (up to 10-12 bar) work. Thus, the impressions of the dentures are only with Plaster can be designed, always at risk of breakage.

Die Erfindung zeigt, wie mit der Anwendung des Vacuums die Masse in der Heizkammer nicht nur homogen geschmolzen, sondern gleichzeitig während des Aufwärmens von der Feuchtigkeit befreit wird, was eine sehr wichtige Voraussetzung für die Erhaltung der technischen und klinischen Eigenschaften thermoplastischer Kunststoffe ist.The invention shows how, with the application of the vacuum, the mass in the heating chamber not only melted homogeneously, but simultaneously the moisture is removed during the warm-up, which is a very important prerequisite for the maintenance of technical and clinical Properties of thermoplastics.

Die Masse wird ohne Luftwiderstand in die Muffel, die die Abformung aus Gips umschließt, injiziert.The mass is placed in the muffle without air resistance, which is the impression Plaster encloses, injected.

Das Gerät besteht aus einem vacuumdrucksicheren, dem Romboid ähnlichen Gehäuse Fig. 1 Draufsicht, das im Inneren mit allen im Raum vorhandenen Bestandteilen und Materialien unter Vacuum gestellt wird.The device consists of a vacuum pressure-proof housing similar to the romboid . Fig. 1 Top view, which is placed inside with all components and materials in the room under vacuum.

Der Boden für die Küvette Fig. 2 ist mit dem oberen Teil des Gehäuses fest verbunden. Die Küvette Fig. 3 wird mit dem Druck einer Schraube Fig. 4 von oben und außerhalb des vacuumdrucksicheren Gehäuses am Boden festgehalten. The bottom for the cuvette Fig. 2 is firmly connected to the upper part of the housing. The cuvette Fig. 3 is held on the floor with the pressure of a screw Fig. 4 from above and outside the vacuum pressure-proof housing.

Der Anschluß Fig. 5 der Heizkammer Fig. 6 befindet sich am Boden der tragenden Plattform direkt unter der Küvette. Der Kolben Fig. 7a der Heizkammer ist stabil verbunden Fig. 7b mit den zwei Kolben Fig. 8 der Pumpen Fig. 9, die neben der Küvette aus platzsparenden Gründen angebracht sind. Diese nehmen beim Injizieren der flüssigen Masse den Kolben der Heizkammer mit nach oben.The connection Fig. 5 of the heating chamber Fig. 6 is located on the bottom of the supporting platform directly under the cuvette. The piston Fig. 7a of the heating chamber is stably connected. Fig. 7b with the two pistons Fig. 8 of the pumps Fig. 9, which are attached next to the cuvette for space-saving reasons. When the liquid mass is injected, these take the piston of the heating chamber upwards.

Der thermolastische Kunststoff wird in die senkrechte Heizkammer durch die Öffnung Fig. 10 an der tragenden Plattform für die Küvette ohne Kartusche eingeschoben, um den Druck für das Injizieren zusätzlich zu reduzieren.The thermoplastic plastic is inserted into the vertical heating chamber through the opening Fig. 10 on the supporting platform for the cuvette without a cartridge, in order to further reduce the pressure for injecting.

Für den Fall, daß die thermoplastischen Kunststoffe besonders schnell nach dem Injizieren abgekühlt werden müssen, ist innerhalb des vacuumdrucksicheren Gehäuses eine Vorrichtung Fig. 11 angebracht, an welche die Küvette für die Wasserabkühlung angeschlossen werden kann.In the event that the thermoplastics have to be cooled particularly quickly after injection, a device Fig. 11 is attached within the vacuum pressure-proof housing to which the cuvette for water cooling can be connected.

Claims (6)

1. Verwendung eines Gerätes mit vacuumverdichtetem Gehäuse zum Schmelzen, Injizieren und Abkühlen von thermoplastischen Kunststoffen unter Vacuum.1. Use of a device with vacuum-compressed housing for Melting, injecting and cooling thermoplastic materials under vacuum. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Schmelzen von thermoplastischen Kunststoffen unter Vacuum erfolgt.2. The method according to claim 1, characterized in that the Melting of thermoplastics takes place under vacuum. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Injizieren der geschmolzenen thermoplastischen Kunststoffe unter Vacuum erfolgt.3. The method according to claim 1 and 2, characterized in that the Inject the melted thermoplastic under Vacuum takes place. 4. Verfahren nach Anspruch 1, 2 und 3, dadurch gekennzeichnet, daß das Abkühlen der thermoplastischen Kunststoffe unter Vacuum erfolgen kann.4. The method according to claim 1, 2 and 3, characterized in that the Cooling of the thermoplastics can take place under vacuum. 5. Verfahren nach Anspruch 1, 2, 3 und 4, dadurch gekennzeichnet, daß das Injizieren von thermoplastischen Kunststoffen unter Vacuum bei niedrigem Druck der Pumpen zwischen 2 und 3 Bar erfolgt.5. The method according to claim 1, 2, 3 and 4, characterized in that injecting thermoplastics under vacuum low pump pressure between 2 and 3 bar. 6. Verfahren nach Anspruch 1, 2, 3, 4 und 5, dadurch gekennzeichnet, daß die Masse homogen geschmolzen und gleichzeitig während des Aufwärmens von der Feuchtigkeit befreit wird als wichtige Voraussetzung für die Erhaltung der technischen und klinischen Eigenschaften der thermoplastischen Kunststoffe.6. The method according to claim 1, 2, 3, 4 and 5, characterized in that that the mass melted homogeneously and at the same time during the Warming up is freed from moisture as an important requirement for the maintenance of the technical and clinical properties of the thermoplastics.
DE1996135034 1996-08-29 1996-08-29 melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses Withdrawn DE19635034A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996135034 DE19635034A1 (en) 1996-08-29 1996-08-29 melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996135034 DE19635034A1 (en) 1996-08-29 1996-08-29 melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses

Publications (1)

Publication Number Publication Date
DE19635034A1 true DE19635034A1 (en) 1998-03-05

Family

ID=7804084

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996135034 Withdrawn DE19635034A1 (en) 1996-08-29 1996-08-29 melting and injecting thermoplastic under vacuum device for manufacturing teeth prostheses

Country Status (1)

Country Link
DE (1) DE19635034A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212379A1 (en) * 1982-04-02 1983-10-20 ESPE Fabrik pharmazeutischer Präparate GmbH, 8031 Seefeld DEVICE FOR TREATING DENTAL MATERIALS
DE3323611A1 (en) * 1982-07-03 1984-01-05 Bipel Ltd., Sutton Coldfield, West Midlands MOLDING MACHINE
DE9011414U1 (en) * 1989-10-03 1990-10-11 Polyapress GmbH AZ-Dental Labor, 6544 Womrath Plastic spraying device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212379A1 (en) * 1982-04-02 1983-10-20 ESPE Fabrik pharmazeutischer Präparate GmbH, 8031 Seefeld DEVICE FOR TREATING DENTAL MATERIALS
DE3323611A1 (en) * 1982-07-03 1984-01-05 Bipel Ltd., Sutton Coldfield, West Midlands MOLDING MACHINE
DE9011414U1 (en) * 1989-10-03 1990-10-11 Polyapress GmbH AZ-Dental Labor, 6544 Womrath Plastic spraying device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EISENMANN: Neues von Inkovac Verbesserungen an einem bewährten System, In: Sonderdruck aus dental-labor München: Verlag Neuer Merkur GmbH, 1987, H. 5 *
VIVIANI, Bruno: Bessere Gußstücke dank Vakuumver- fahren, In: Techn. Rundschau, 1985, H.6, S. 20-23 *

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