EP1274501B1 - Mixer - Google Patents

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Publication number
EP1274501B1
EP1274501B1 EP01923721A EP01923721A EP1274501B1 EP 1274501 B1 EP1274501 B1 EP 1274501B1 EP 01923721 A EP01923721 A EP 01923721A EP 01923721 A EP01923721 A EP 01923721A EP 1274501 B1 EP1274501 B1 EP 1274501B1
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EP
European Patent Office
Prior art keywords
range
mixer
cartridge front
dynamic mixer
break
Prior art date
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Expired - Lifetime
Application number
EP01923721A
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German (de)
French (fr)
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EP1274501A1 (en
EP1274501B2 (en
Inventor
Ingo Wagner
Gerd Brandhorst
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.)
3M Deutschland GmbH
Original Assignee
3M Espe AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0722—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis perpendicular with respect to the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application

Definitions

  • the invention relates to a device in the form a dynamic mixer, and / or in the form of a cartridge front, the is used when mixing highly viscous pastes or one Combination of both devices.
  • EP 0 232 733 A or US 5,487,606 describes a two-component discharge device described. Such discharge facilities are also referred to as static or flow mixers.
  • mixers are essentially only suitable for mixing relatively small amounts of easily miscible masses with not too much high viscosity.
  • the mixer is placed on a double cartridge, in which are two pistons. The power is transferred to the pistons manually.
  • the quality of the mixing result ultimately depends on the Length of the mixing tip and the number of helices it contains. There the volume of the mixing tip in relation to the volume of the cartridge is not to be neglected, it happens when changing the mixing tip undesirable loss of material to be mixed or mixed Dimensions.
  • a method and apparatus for mixing at least two pasty masses is also described in DE 42 02 591 A1.
  • the device comprises two containers, the outlet nozzle for common Coupling to a mixer are arranged in parallel next to each other.
  • EP 0 993 863 A1 discloses a device in the form of a mixer circular inlet openings, which has a detour channel.
  • DE 42 02 591 A1 discloses a device with two containers, each with one Outlet connector, which may differ from the circular shape.
  • the one from the Device emerging mass flow should then be in a static mixer be directed.
  • the device also has a thread for connection to the static mixer.
  • EP 0 319 135 A1 describes a device for dispensing multicomponent masses described, comprising a multi-chamber cartridge and a static Mixer.
  • the static mixer has no inlet openings that match the Outlet openings of the cartridge correspond.
  • the static mixer is about a thread is connected to the cartridge.
  • US 5,498,078 relates to a static mixer with associated cartridges can be connected.
  • WO-98/43727 A1 describes a dynamic mixer with circular Inlets.
  • an essentially ideal mixer allows a high one Material throughput with constant mixing quality, on the other hand it points a small size to avoid material loss when mixing avoid and keep manufacturing costs low.
  • a typical dynamic mixer has two round inlet openings for the masses to be mixed, and an opening for receiving a Drive shaft that drives the mixing blades.
  • the masses to be mixed are usually made using electrically driven pistons appropriate cartridges applied.
  • the amount of miscible mass per unit of time is limited on the one hand by the size of the inlet openings, on the other hand by the size of the piston transmissible force.
  • the increase in the diameter of the round inlet openings leads necessary for an enlargement of the mixer as a whole and thus also to undesirably increase the dead volume.
  • the force on the punches could be increased. This measure is, however, due to the material properties of the device in Connection limited by the size of the inlet openings.
  • an object of the present invention is an apparatus to provide for mixing that a higher material throughput at im essentially the same mixing quality and preferably the same Stamp printing of the mixer. to promote the masses must be applied.
  • inlet openings different from the circular shape it is possible with the same size of mixer or cartridge front to provide larger entry openings for the masses to be mixed.
  • the device is in the form of a mixer or one Cartridge front on the one hand sufficiently elastic and flexible to be yours to work its own seal, on the other hand, it is sufficiently stable to withstand the Application of the mass to be mixed or that occurring during mixing To be able to process forces.
  • a material has proven to be advantageous which has a modulus of elasticity measured according to DIN 53455 of greater than 200 N / mm 2 , preferably in the range from 200 to 3600 N / mm 2 , particularly preferably in the range from 500 to 1500 N / mm 2 ,
  • a material that has an elongation at break [%] has also proven to be favorable. also measured according to DIN 53455 in the range from 2 to 1000, preferably in the range from 100 to 800.
  • the material is preferably such that it has a modulus of elasticity and has an elongation at break, as described above, in combination.
  • opening in the sense of the present invention includes both Understand inlet openings as well as outlet openings. It depends of the direction in which the substances to be mixed flow or are pressed and depending on whether openings in the mixer or the Cartridge front can be considered.
  • a cartridge front usually has at least one inlet opening on, which corresponds to the at least one outlet opening.
  • a mixer usually has two inlet openings and only an outlet opening.
  • Oval openings and / or openings in kidney or Sickle shape especially openings with rounded edges and corners.
  • Such a design enables an optimized arrangement of the Inlets around which are usually at the center of a dynamic Mixer opening for the drive shaft. This also allows Design almost all of the use for the entrance openings available surface of a dynamic mixer.
  • the device according to the invention preferably has at least two, but possibly also three or four openings.
  • the opening deviating from the circular shape usually has a surface which is larger than would be possible with a circular design.
  • These openings are usually symmetrical about the opening for the Drive shaft arranged.
  • the mixing element can also be driven off-center, as is the case is described for example in WO 01 / 24919A1.
  • the device according to the invention in the form of a dynamic mixer usually comprises at least three components, in particular one Base plate (1) into which the non-circular inlet openings (2, 3) and the Opening (4) for the drive shaft (not shown) and a in the base plate (1) rotatably mounted rotor (5) to which the mixing blades (6) are attached and a shaped groove (7) for receiving the drive shaft, and the housing (8) in which the rotor (5) runs.
  • the device additionally has at least one seal in the area of the inlet openings (2, 3).
  • the shape of the groove (7) for the drive shaft is arbitrary, under the Prerequisite that a sufficient power transmission for mixing from the drive shaft to the mixing blades (6).
  • Angular openings have been used to transmit the torque proven from the drive shaft to the rotor as favorable.
  • the shaped groove (7) for the drive shaft triangular, square, square, pentagonal, hexagonal, heptagonal, octagonal or designed as a hollow pinion.
  • the length and / or the diameter of the mixer are usually in Range from 5 to 1000 mm, preferably in the range from 10 to 100 mm.
  • the area of the inlet openings is usually in the range from 0.1 to 5000 mm 2 , preferably in the range from 1 to 400 mm 2 .
  • This adjustment is usually carried out by adapting the geometries of the Openings of the cartridge front (10, 11) on the inlet openings (2,3) of the Mixer reached. This can be done by plugging, snapping or, if necessary screw connections can also be achieved.
  • the vote can also be done by adjusting the Materials.
  • the material of the mixer has a modulus of elasticity in the range from 800 to 1400 N / mm 2 and / or an elongation at break in the range from 200 to 800% and the material of the cartridge front unites E-modulus in the range of 2000 to 3000 N / mm 2 and / or have an elongation at break in the range of 50 to 200%.
  • a comparably good sealing effect can be achieved if the material of the mixer has an elastic modulus in the range from 2000 to 3000 N / mm 2 and / or an elongation at break in the range from 50 to 200% and the material of the cartridge front has an elastic modulus in the range from 800 to 1400 N / mm 2 and / or an elongation at break in the range from 200 to 800%.
  • Suitable materials for the device especially in the form of a
  • Mixer and / or a cartridge front with two non-circular inlet or outlet openings include PE, OPP, PP, PTFE, PC and / or POM.
  • the materials are preferably fiber-reinforced and / or filled Shape used.
  • Suitable fibers and fillers include glass fibers / particles and Carbon fibers / particles.
  • Suitable mixers and / or cartridge fronts can be used, for example in the injection molding process, if necessary in a 2-component injection molding process produce.
  • the mixers and cartridge fronts according to the invention can be used on all Fields of technology, in particular for mixing highly viscous, Use pasty and / or viscous masses.
  • Examples include: adhesives, joint sealants, lacquers.
  • the mixers and cartridge fronts according to the invention can preferably be use in the dental field.
  • the inventive ones are particularly suitable Devices for mixing highly viscous impression materials, the for example, from tubular bags, which are in suitable cartridges are inserted, pressed out with electrically driven stamps become.
  • the application of the materials is also conceivable and possible suitable cartridges that are filled directly with the material without a Tubular bag is used.
  • highly viscous masses includes all masses with a viscosity determined by consistency check according to DIN 4823 class 0 to 3, with a diameter of less than 80 mm can be measured.
  • Silicones polyethers, Polyether silicones, epoxies and polyurethanes.
  • Figure 1 shows the device in the form of a dynamic mixer in the Longitudinal section.
  • Figure 2 shows the device in the form of a dynamic mixer in the At sight.
  • Figure 3 shows the device comprising a mixer and a Cartridge front.
  • Figure 4 shows the design in the form of a cartridge front in the supervision.
  • Figures 5 and 6 show further embodiments of a dynamic Mixer in supervision.
  • Figure 1 shows the device according to the invention in the form of a dynamic mixer with the three components, base plate (1) into which the non-circular inlet openings (2,3) and the opening (4) for the Drive shaft are embedded, one in the base plate (1) rotatable mounted rotor (5) to which the mixing blades (6) are attached, the Opening has a shaped groove (7) for receiving the drive shaft, and the housing (9) in which the rotor (5) runs.
  • Figure 2 shows the device according to the invention in the form of a dynamic mixer with two kidney-shaped inlet openings different Size (2, 3) and a round opening (4) with hexagonal Form groove (7) for the drive shaft. Also indicated is the one in opening (2) visible mixing blades (6).
  • FIG. 3 shows the device according to the invention, comprising the mixer according to Figure 1 in connection with two cartridge fronts (9, 9 ').
  • the two differently sized inlet openings (2, 3) of the dynamic mixer correspond to the two outlet openings of the cartridge front (10, 11).
  • Figure 4 shows a cartridge front in supervision with a kidney-shaped Opening (10), for example with the opening (3) in Figure 2 corresponds.
  • FIGS. 5 and 6 show further design options for the non-circular ones Openings of the device according to the invention in the form of a dynamic mixer.
  • the mixer in Figure 5 has two openings in oval shape, the mixer in Figure 6 two openings in a semicircular shape with rounded corners.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Confectionery (AREA)
  • Vehicle Body Suspensions (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention relates to a device that is used for mixing pasty materials, wherein the elasticity module of the device is greater than 200 N/mm2 and/or strain at break of the material of the device ranges from 2 to 1000%, and wherein the device has at least two non-circular openings.

Description

Die Erfindung betrifft eine Vorrichtung in Form eines dynamischen Mischers, und/oder in Form einer Kartuschenfront, die beim Mischen von hochviskosen Pasten Verwendung findet bzw. eine Kombination beider Vorrichtungen.The invention relates to a device in the form a dynamic mixer, and / or in the form of a cartridge front, the is used when mixing highly viscous pastes or one Combination of both devices.

In der EP 0 232 733 A oder der US 5,487,606 wird eine Zweikomponenten-Austragseinrichtung beschrieben. Solche Austrageinrichtungen werden auch als statische oder Strömungsmischer bezeichnet.EP 0 232 733 A or US 5,487,606 describes a two-component discharge device described. Such discharge facilities are also referred to as static or flow mixers.

Diese Mischer eignen sich im wesentlichen nur zum Anmischen von verhältnismäßig kleinen Mengen leicht mischbarer Massen mit nicht allzu hoher Viskosität. Der Mischer wird auf eine Doppelkartusche aufgesetzt, in der sich zwei Kolben befinden. Die Kraftübertragung auf die Kolben erfolgt händisch. Die Qualität des Mischergebnisses ist letztlich abhängig von der Länge der Mischkanüle und der Anzahl der darin enthaltenen Wendel. Da das Volumen der Mischkanüle im Verhältnis zum Volumen der Kartusche nicht zu vemachlässigen ist, kommt es beim Wechseln der Mischkanüle zu unerwünschtem Materialverlust an anzumischender bzw. angemischter Masse.These mixers are essentially only suitable for mixing relatively small amounts of easily miscible masses with not too much high viscosity. The mixer is placed on a double cartridge, in which are two pistons. The power is transferred to the pistons manually. The quality of the mixing result ultimately depends on the Length of the mixing tip and the number of helices it contains. There the volume of the mixing tip in relation to the volume of the cartridge is not to be neglected, it happens when changing the mixing tip undesirable loss of material to be mixed or mixed Dimensions.

Ein Teil dieser Probleme lässt sich durch Verwendung eines dynamischen Mischers umgehen, wie er in der WO-98/43727 beschrieben ist.Some of these problems can be solved by using a dynamic Avoid mixer, as described in WO-98/43727.

Ein Verfahren und eine Vorrichtung zum Mischen von wenigstens zwei pastösen Massen wird auch in der DE 42 02 591 A1 beschrieben. Die Vorrichtung umfasst zwei Behälter, deren Austassstutzen zur gemeinsamen Ankoppelung an einen Mischer parallel neben einander angeordnet sind. A method and apparatus for mixing at least two pasty masses is also described in DE 42 02 591 A1. The The device comprises two containers, the outlet nozzle for common Coupling to a mixer are arranged in parallel next to each other.

Die EP 0 993 863 A1 offenbart eine Vorrichtung in Form eines Mischers mit kreisförmigen Einlassöffnungen, die einen Umwegkanal aufweist.EP 0 993 863 A1 discloses a device in the form of a mixer circular inlet openings, which has a detour channel.

In der US 5,487,606 wird ein statischer Mischer offenbart, der durch Drehen um die Längsachse mit einer Kartusche verbunden werden kann.In US 5,487,606 a static mixer is disclosed, which by rotating around the Longitudinal axis can be connected to a cartridge.

In der US 4,432,469 wird ein Mischer mit einer drehbar gelagerten Mischwendel offenbart. In einer drehbar gelagerten Platte befinden sich bohnenförmige Öffnungen, die zur Regulierung der Pastenströme dienen.In US 4,432,469 a mixer with a rotatably mounted mixing spiral disclosed. There are bean-shaped openings in a rotatably mounted plate, which serve to regulate the paste flows.

DE 42 02 591 A1 offenbart eine Vorrichtung mit zwei Behältnissen mit jeweils einem Auslassstutzen, der gegebenenfalls von der Kreisform abweichen kann. Der aus der Vorrichtung austretende Massenstrom soll anschließend in einen statischen Mischer geleitet werden. Die Vorrichtung weist zudem ein Gewinde zur Verbindung mit dem statischen Mischer auf.DE 42 02 591 A1 discloses a device with two containers, each with one Outlet connector, which may differ from the circular shape. The one from the Device emerging mass flow should then be in a static mixer be directed. The device also has a thread for connection to the static mixer.

In EP 0 319 135 A1 wird eine Vorrichtung zur Abgabe von MehrkomponentenMassen beschrieben, umfassend eine Mehrkammer-Kartusche und einen statischen Mischer. Der statische Mischer weist keine Eintrittsöffnungen auf, die mit den Austrittsöffnungen der Kartusche korrespondieren. Der statische Mischer wird über ein Gewinde mit der Kartusche verbunden.EP 0 319 135 A1 describes a device for dispensing multicomponent masses described, comprising a multi-chamber cartridge and a static Mixer. The static mixer has no inlet openings that match the Outlet openings of the cartridge correspond. The static mixer is about a thread is connected to the cartridge.

Die US 5,498,078 betrifft einen statischen Mischer, der mit zugehörigen Kartuschen verbunden werden kann.US 5,498,078 relates to a static mixer with associated cartridges can be connected.

Die WO-98/43727 A1 beschreibt einen dynamischen Mischer mit kreisförmigen Einlassöffnungen.WO-98/43727 A1 describes a dynamic mixer with circular Inlets.

Ein im wesentlichen idealer Mischer erlaubt zum einen einen hohen Materialdurchsatz bei gleichbleibender Mischqualität, zum anderen weist er eine geringe Baugröße auf, um Materialverlust beim Anmischen zu vermeiden und die Fertigungskosten gering zu halten. On the one hand, an essentially ideal mixer allows a high one Material throughput with constant mixing quality, on the other hand it points a small size to avoid material loss when mixing avoid and keep manufacturing costs low.

Ein typischer dynamischer Mischer weist zwei runde Einlassöffnungen für die zu mischenden Massen auf, sowie eine Öffnung zur Aufnahme einer Antriebswelle, die die Mischflügel antreibt. Die zu mischenden Massen werden üblicherweise über elektrisch angetriebene Kolben aus entsprechenden Kartuschen ausgebracht.A typical dynamic mixer has two round inlet openings for the masses to be mixed, and an opening for receiving a Drive shaft that drives the mixing blades. The masses to be mixed are usually made using electrically driven pistons appropriate cartridges applied.

Gewünscht ist ein hoher Durchsatz bei gleichbleibender Mischqualität.A high throughput with constant mixing quality is desired.

Die Menge an mischbarer Masse pro Zeiteinheit wird allerdings beschränkt zum einen durch die Größe der Einlassöffnungen, zum anderen durch die auf die Kolben übertragbare Kraft.However, the amount of miscible mass per unit of time is limited on the one hand by the size of the inlet openings, on the other hand by the size of the the piston transmissible force.

Die Vergrößerung des Durchmessers der runden Einlassöffnungen führt notgedrungen zu einer Vergrößerung des Mischers insgesamt und damit auch zur unerwünschten Vergrößerung des Totvolumens.The increase in the diameter of the round inlet openings leads necessary for an enlargement of the mixer as a whole and thus also to undesirably increase the dead volume.

Eine Änderung der Geometrie der Einlassöffnungen führt zu Problemen hinsichtlich der Dichtung an dieser Stelle und wird zudem durch die notwendige Öffnung für die Antriebswelle beschränkt.Changing the geometry of the inlet openings leads to problems with regard to the seal at this point and is also by the necessary opening for the drive shaft limited.

Alternativ könnte die Kraft auf die Stempel erhöht werden. Diese Maßnahme wird allerdings durch die Materialeigenschaften der Vorrichtung in Verbindung mit der Größe der Einlassöffnungen begrenzt.Alternatively, the force on the punches could be increased. This measure is, however, due to the material properties of the device in Connection limited by the size of the inlet openings.

Folglich ist es eine Aufgabe der vorliegenden Erfindung, eine Vorrichtung zum Mischen bereitzustellen, die einen höheren Materialdurchsatz bei im wesentlichem gleicher Mischqualität und vorzugsweise gleichem Stempeldruck der von dem Mischgerät. zur Förderung der Massen aufgebracht werden muss, ermöglicht.Accordingly, an object of the present invention is an apparatus to provide for mixing that a higher material throughput at im essentially the same mixing quality and preferably the same Stamp printing of the mixer. to promote the masses must be applied.

Diese Aufgabe wird durch eine Kombination bzw. Vorrichtungen gelöst, wie sie in den Ansprüchen beschrieben sind.This object is achieved by a combination or devices as set out in the claims are described.

Durch eine Gestaltung der Eintrittsöffnungen abweichend von der Kreisform ist es möglich, bei gleicher Baugröße des Mischers oder der Kartuschenfront größere Eintrittsöffnungen für die anzumischenden Massen bereitzustellen. By designing the inlet openings different from the circular shape it is possible with the same size of mixer or cartridge front to provide larger entry openings for the masses to be mixed.

Bei Einhaltung der genannten Parameter, die kennzeichnend für das Material des Mischers oder der Kartuschenfront sind, erübrigt sich gegebenenfalls auch die Anbringung zusätzlicher Dichtungen, wie Dichtlippen und/oder Dichtungsringe.In compliance with the parameters mentioned, which are characteristic of the material of the mixer or the cartridge front may not be necessary also the attachment of additional seals, such as sealing lips and / or Sealing rings.

In diesem Fall ist die Vorrichtung in der Form eines Mischer bzw. einer Kartuschenfront einerseits ausreichend elastisch und flexibel, um als ihre eigene Dichtung zu wirken, zum anderen ausreichend stabil, um die beim Ausbringen der anzumischenden Masse bzw. beim Anmischen auftretenden Kräfte verarbeiten zu können.In this case the device is in the form of a mixer or one Cartridge front on the one hand sufficiently elastic and flexible to be yours to work its own seal, on the other hand, it is sufficiently stable to withstand the Application of the mass to be mixed or that occurring during mixing To be able to process forces.

Als vorteilhaft hat sich ein Material erwiesen, das einen E-Modul gemessen nach DIN 53455 von größer 200 N/mm2, vorzugsweise im Bereich von 200 bis 3600 N/mm2, besonders bevorzugt im Bereich von 500 bis 1500 N/mm2 aufweist.A material has proven to be advantageous which has a modulus of elasticity measured according to DIN 53455 of greater than 200 N / mm 2 , preferably in the range from 200 to 3600 N / mm 2 , particularly preferably in the range from 500 to 1500 N / mm 2 ,

Als günstig hat sich auch ein Material erwiesen, das eine Reißdehnung [%] gemessen ebenfalls nach DIN 53455 im Bereich von 2 bis 1000, vorzugsweise im Bereich von 100 bis 800 aufweist.A material that has an elongation at break [%] has also proven to be favorable. also measured according to DIN 53455 in the range from 2 to 1000, preferably in the range from 100 to 800.

Vorzugsweise ist das Material derart beschaffen, das es einen E-Modul und eine Reißdehnung, wie oberhalb beschrieben, in Kombination aufweist.The material is preferably such that it has a modulus of elasticity and has an elongation at break, as described above, in combination.

Materialien, die mindestens eine der oben genannten Eigenschaften nicht aufweisen, haben sich als ungeeignet erwiesen für Mischer, insbesondere dynamische Mischer, und/oder Kartuschenfronten mit Öffnungen, die von der Kreisform abweichen.Materials that do not have at least one of the above properties have proven unsuitable for mixers, in particular dynamic mixers, and / or cartridge fronts with openings that extend from the Deviate circular shape.

Unter dem Begriff Öffnung im Sinne der vorliegenden Erfindung sind sowohl Einlassöffnungen als auch Auslassöffnungen zu verstehen. Dies ist abhängig davon, in welcher Richtung die anzumischenden Substanzen fließen bzw. gepresst werden und abhängig davon, ob Öffnungen im Mischer oder der Kartuschenfront betrachtet werden.The term opening in the sense of the present invention includes both Understand inlet openings as well as outlet openings. It depends of the direction in which the substances to be mixed flow or are pressed and depending on whether openings in the mixer or the Cartridge front can be considered.

Üblicherweise weist eine Kartuschenfront mindestens eine Einlassöffnung auf, die mit der mindestens einen Auslassöffnung korrespondiert. A cartridge front usually has at least one inlet opening on, which corresponds to the at least one outlet opening.

Ein Mischer weist hingegen üblicherweise zwei Einlassöffnungen und nur eine Auslassöffnung auf.A mixer, however, usually has two inlet openings and only an outlet opening.

Vorteilhaft sind ovale Öffnungen und/oder Öffnungen in Nieren- oder Sichelform, insbesondere Öffnungen mit abgerundeten Kanten und Ecken.Oval openings and / or openings in kidney or Sickle shape, especially openings with rounded edges and corners.

Eine derartige Gestaltung ermöglicht eine optimierte Anordnung der Einlassöffnungen um die sich üblicherweise im Zentrum eines dynamischen Mischers befindliche Öffnung für die Antriebswelle. Femer erlaubt diese Gestaltung die Ausnützung nahezu der gesamten für die Eintrittsöffnungen zur Verfügung stehenden Oberfläche eines dynamischen Mischers.Such a design enables an optimized arrangement of the Inlets around which are usually at the center of a dynamic Mixer opening for the drive shaft. This also allows Design almost all of the use for the entrance openings available surface of a dynamic mixer.

Die erfindungsgemäße Vorrichtung weist vorzugsweise mindestens zwei, gegebenenfalls aber auch drei oder vier Öffnungen auf.The device according to the invention preferably has at least two, but possibly also three or four openings.

Die von der Kreisform abweichende Öffnung hat üblicherweise eine Fläche, die größer ist, als dies bei einer kreisförmigen Ausführung möglich wäre.The opening deviating from the circular shape usually has a surface which is larger than would be possible with a circular design.

Diese Öffnungen sind üblicherweise symmetrisch um die Öffnung für die Antriebswelle angeordnet.These openings are usually symmetrical about the opening for the Drive shaft arranged.

Der Antrieb des Mischelements kann aber auch außermittig erfolgen, wie es beispielsweise in der WO 01/24919A1 beschrieben ist.However, the mixing element can also be driven off-center, as is the case is described for example in WO 01 / 24919A1.

Die erfindungsgemäße Vorrichtung in der Form eines dynamischen Mischers umfasst üblicherweise mindestens drei Bauteile, insbesondere eine Basisplatte (1), in die die nicht-kreisförmigen Einlassöffnungen (2, 3) und die Öffnung (4) für die Antriebswelle (nicht gezeigt) eingelassen sind und einen in der Basisplatte (1) drehbar gelagerten Rotor (5), an den die Mischflügel (6) angebracht sind und eine Formnut (7) zur Aufnahme der Antriebswelle, sowie das Gehäuse (8) in dem der Rotor (5) läuft.The device according to the invention in the form of a dynamic mixer usually comprises at least three components, in particular one Base plate (1) into which the non-circular inlet openings (2, 3) and the Opening (4) for the drive shaft (not shown) and a in the base plate (1) rotatably mounted rotor (5) to which the mixing blades (6) are attached and a shaped groove (7) for receiving the drive shaft, and the housing (8) in which the rotor (5) runs.

Gegebenenfalls weist die Vorrichtung zusätzlich mindestens eine Dichtung im Bereich der Einlassöffnungen (2, 3) auf. If necessary, the device additionally has at least one seal in the area of the inlet openings (2, 3).

Die Form der Nut (7) für die Antriebswelle ist beliebig, unter der Vorraussetzung, dass eine zum Mischen eine ausreichende Kraftübertragung von der Antriebswelle auf die Mischflügel (6) erfolgen kann.The shape of the groove (7) for the drive shaft is arbitrary, under the Prerequisite that a sufficient power transmission for mixing from the drive shaft to the mixing blades (6).

Öffnungen in kantiger Form haben sich zur Übertragung des Drehmoments von der Antriebswelle auf den Rotor als günstig erwiesen. Vorzugsweise ist die Formnut (7) für die Antriebswelle dreieckig, viereckig, quadratisch, fünfeckig, sechseckig, siebeneckig, achteckig oder als Hohlritzel ausgebildet.Angular openings have been used to transmit the torque proven from the drive shaft to the rotor as favorable. Preferably the shaped groove (7) for the drive shaft triangular, square, square, pentagonal, hexagonal, heptagonal, octagonal or designed as a hollow pinion.

Die Länge und/oder der Durchmesser des Mischers liegen üblicherweise im Bereich von 5 bis 1000 mm, vorzugsweise im Bereich von 10 bis 100 mm.The length and / or the diameter of the mixer are usually in Range from 5 to 1000 mm, preferably in the range from 10 to 100 mm.

Die Fläche der Einlassöffnungen liegt üblicherweise im Bereich von 0,1 bis 5000 mm2, vorzugsweise im Bereich von 1 bis 400 mm2.The area of the inlet openings is usually in the range from 0.1 to 5000 mm 2 , preferably in the range from 1 to 400 mm 2 .

Um eine homogene Durchmischung der zu mischenden Substanzen sicherzustellen, ohne die Vorrichtung oberflächlich im Außenbereich zu kontaminieren, ist es erforderlich, dass Mischer und die in den Mischer einschiebbare Kartuschenfront aufeinander abgestimmt sind.To ensure homogeneous mixing of the substances to be mixed ensure without the device superficial to the outside contaminate, it is necessary that the mixer and that in the mixer insertable cartridge front are coordinated.

Üblicherweise wird diese Abstimmung durch Anpassung der Geometrien der Öffnungen der Kartuschenfront (10, 11) auf die Einlassöffnungen (2,3) des Mischers erreicht. Dies kann durch Steck-, Schnapp oder gegebenenfalls auch Schraubverbindungen erreicht werden.This adjustment is usually carried out by adapting the geometries of the Openings of the cartridge front (10, 11) on the inlet openings (2,3) of the Mixer reached. This can be done by plugging, snapping or, if necessary screw connections can also be achieved.

Alternativ oder kumulativ kann die Abstimmung auch durch Anpassung der Materialien erfolgen.Alternatively or cumulatively, the vote can also be done by adjusting the Materials.

Es wurde gefunden, dass sich gute Dichtwirkungen insbesondere dann erzielen lassen, wenn das Material des Mischers einen E-Modul im Bereich von 800 bis 1400 N/mm2 und/oder eine Reißdehnung im Bereich von 200 bis 800% und das Material der Kartuschenfront einen E-Modul im Bereich von 2000 bis 3000 N/mm2 und/oder eine Reißdehnung im Bereich von 50 bis 200% aufweisen. It has been found that good sealing effects can be achieved in particular when the material of the mixer has a modulus of elasticity in the range from 800 to 1400 N / mm 2 and / or an elongation at break in the range from 200 to 800% and the material of the cartridge front unites E-modulus in the range of 2000 to 3000 N / mm 2 and / or have an elongation at break in the range of 50 to 200%.

Eine vergleichbar gute Dichtwirkung lässt sich erreichen, wenn das Material des Mischers einen E-Modul im Bereich von 2000 bis 3000 N/mm2 und/oder eine Reißdehnung im Bereich von 50 bis 200% und das Material der Kartuschenfront einen E-Modul im Bereich von 800 bis 1400 N/mm2 und/oder eine Reißdehnung im Bereich von 200 bis 800% aufweisen.A comparably good sealing effect can be achieved if the material of the mixer has an elastic modulus in the range from 2000 to 3000 N / mm 2 and / or an elongation at break in the range from 50 to 200% and the material of the cartridge front has an elastic modulus in the range from 800 to 1400 N / mm 2 and / or an elongation at break in the range from 200 to 800%.

Geeignete Materialien für die Vorrichtung, insbesondere in der Form einesSuitable materials for the device, especially in the form of a

Mischer und/oder einer Kartuschenfront mit zwei nicht-kreisförmigen Einlass- bzw. Auslassöffnungen umfassen PE, OPP, PP, PTFE, PC und/oder POM. Vorzugsweise werden die Materialien in faserverstärkter und/oder gefüllter Form verwendet.Mixer and / or a cartridge front with two non-circular inlet or outlet openings include PE, OPP, PP, PTFE, PC and / or POM. The materials are preferably fiber-reinforced and / or filled Shape used.

Geeignete Fasern und Füllstoffe umfassen Glasfasern/ -partikel und Kohlenstofffasem/ -partikel.Suitable fibers and fillers include glass fibers / particles and Carbon fibers / particles.

Geeignete Mischer und/oder Kartuschenfronten lassen sich beispielsweise im Spritzgussverfahren, gegebenenfalls in einem 2-K-Spritzgussverfahren herstellen.Suitable mixers and / or cartridge fronts can be used, for example in the injection molding process, if necessary in a 2-component injection molding process produce.

Die erfindungsgemäßen Mischer und Kartuschenfronten lassen sich auf allen Gebieten der Technik, insbesondere zum Mischen von hochviskosen, pastösen und/oder dickflüssigen Massen einsetzen.The mixers and cartridge fronts according to the invention can be used on all Fields of technology, in particular for mixing highly viscous, Use pasty and / or viscous masses.

Hierunter sind allgemein Stoffe zu verstehen, die im Lagerzustand getrennt in mindestens zwei Komponenten aufbewahrt werden und vor der Verwendung gemischt werden müssen.These are generally understood to mean substances that are separated into when stored At least two components must be kept and before use need to be mixed.

Beispielhaft seien genannt: Kleber, Fugendichtmassen, Lacke.Examples include: adhesives, joint sealants, lacquers.

Vorzugsweise lassen sich die erfindungsgemäßen Mischer und Kartuschenfronten im Dentalbereich einsetzen. Besonders eignen sich die erfindungsgemäßen Vorrichtungen zum Mischen hochviskoser Abformmaterialien, die beispielsweise aus Schlauchbeuteln, die in geeignete Kartuschen eingeschoben sind, mit elektrisch angetriebenen Stempeln ausgepresst werden. Denkbar und möglich ist auch die Ausbringung der Materialien aus geeigneten Kartuschen, die direkt mit dem Material befüllt sind ohne dass ein Schlauchbeutel verwendet wird.The mixers and cartridge fronts according to the invention can preferably be use in the dental field. The inventive ones are particularly suitable Devices for mixing highly viscous impression materials, the for example, from tubular bags, which are in suitable cartridges are inserted, pressed out with electrically driven stamps become. The application of the materials is also conceivable and possible suitable cartridges that are filled directly with the material without a Tubular bag is used.

Der Begriff hochviskose Massen umfasst alle Massen mit einer Viskosität bestimmt durch Konsistenzprüfung nach DIN 4823 Klasse 0 bis 3, die mit einem Durchmesser von kleiner 80 mm gemessen werden.The term highly viscous masses includes all masses with a viscosity determined by consistency check according to DIN 4823 class 0 to 3, with a diameter of less than 80 mm can be measured.

Als Materialien seien beispielhaft genannt Silikone, Polyether, Polyethersilikone, Epoxide und Polyurethane.Silicones, polyethers, Polyether silicones, epoxies and polyurethanes.

Bevorzugte Ausführungsbeispiele werden nachstehend anhand derPreferred embodiments are described below with reference to

Zeichnungen erläutert.Drawings explained.

Figur 1 zeigt die Vorrichtung in der Form eines dynamischen Mischers im Längsschnitt.Figure 1 shows the device in the form of a dynamic mixer in the Longitudinal section.

Figur 2 zeigt die Vorrichtung in Form eines dynamischen Mischers in der Aufsicht.Figure 2 shows the device in the form of a dynamic mixer in the At sight.

Figur 3 zeigt die Vorrichtung, umfassend einen Mischer und eine Kartuschenfront.Figure 3 shows the device comprising a mixer and a Cartridge front.

Figur 4 zeigt die Ausführung in Form einer Kartuschenfront in der Aufsicht.Figure 4 shows the design in the form of a cartridge front in the supervision.

Figur 5 und 6 zeigen weitere Ausführungsformen eines dynamischen Mischers in der Aufsicht.Figures 5 and 6 show further embodiments of a dynamic Mixer in supervision.

Figur 1 zeigt die erfindungsgemäße Vorrichtung in der Form eines dynamischen Mischers mit den drei Bauteilen, Basisplatte (1), in die die nichtkreisförmigen Einlassöffnungen (2,3) und die Öffnung (4) für die Antriebswelle eingelassen sind, einen in der Basisplatte (1) drehbar gelagerten Rotor (5), an den die Mischflügel (6) angebracht sind, wobei die Öffnung eine Formnut (7) zur Aufnahme der Antriebswelle aufweist, sowie das Gehäuse (9) in dem der Rotor (5) läuft. Figure 1 shows the device according to the invention in the form of a dynamic mixer with the three components, base plate (1) into which the non-circular inlet openings (2,3) and the opening (4) for the Drive shaft are embedded, one in the base plate (1) rotatable mounted rotor (5) to which the mixing blades (6) are attached, the Opening has a shaped groove (7) for receiving the drive shaft, and the housing (9) in which the rotor (5) runs.

Figur 2 zeigt die erfindungsgemäße Vorrichtung in der Form eines dynamischen Mischers mit zwei nierenförmigen Einlassöffnungen unterschiedlicher Größe (2, 3) und einer runden Öffnung (4) mit sechseckiger Formnut (7) für die Antriebswelle. Angedeutet ist auch der hier in Öffnung (2) zu sehende Mischflügel (6).Figure 2 shows the device according to the invention in the form of a dynamic mixer with two kidney-shaped inlet openings different Size (2, 3) and a round opening (4) with hexagonal Form groove (7) for the drive shaft. Also indicated is the one in opening (2) visible mixing blades (6).

Figur 3 zeigt die erfindungsgemäße Vorrichtung, umfassend den Mischer gemäß Figur 1 in Verbindung mit zwei Kartuschenfronten (9, 9'). Die beiden unterschiedlich großen Einlassöffnungen (2, 3) des dynamischen Mischers korrespondieren mit den beiden Auslassöffnungen der Kartuschenfront (10, 11).FIG. 3 shows the device according to the invention, comprising the mixer according to Figure 1 in connection with two cartridge fronts (9, 9 '). The two differently sized inlet openings (2, 3) of the dynamic mixer correspond to the two outlet openings of the cartridge front (10, 11).

Figur 4 zeigt eine Kartuschenfront in Aufsicht mit einer nierenförmigen Öffnung (10), die beispielsweise mit der Öffnung (3) in Figur 2 korrespondiert.Figure 4 shows a cartridge front in supervision with a kidney-shaped Opening (10), for example with the opening (3) in Figure 2 corresponds.

In den Figuren 5 und 6 sind weitere Gestaltungsmöglichkeiten für die nichtkreisförmigen Öffnungen der erfindungsgemäßen Vorrichtung in Form eines dynamischen Mischers zu sehen.FIGS. 5 and 6 show further design options for the non-circular ones Openings of the device according to the invention in the form of a dynamic mixer.

Der Mischer in Figur 5 weist zwei Öffnungen in ovaler Form auf, der Mischer in Figur 6 zwei Öffnungen in Halbkreisform mit abgerundeten Ecken. The mixer in Figure 5 has two openings in oval shape, the mixer in Figure 6 two openings in a semicircular shape with rounded corners.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Basisplattebaseplate
(1)(1)
Einlassöffnungeninlets
(2, 3)(2, 3)
Öffnung für AntriebswelleOpening for the drive shaft
(4)(4)
Rotorrotor
(5)(5)
Mischflügelmixing blades
(6)(6)
Formnutforming groove
(7)(7)
Gehäusecasing
(8)(8th)
Kartuschenfrontcartridge front
(9,9')(9,9 ')
Öffnungen der KartuschenfrontCartridge front openings
(10, 11)(10, 11)

Claims (11)

  1. Combination of a device in the form of a dynamic mixer and a cartridge front which is used for mixing pasty materials,
    the device in the form of a dynamic mixer having at least two orifices, at least one of which is non-circular and which allow virtually the entire surface area available for the inlet orifice to be utilized and being designed for connection to at least one device in the form of a cartridge front, which has corresponding orifices,
    the material of the device in the form of a dynamic mixer either having a modulus of elasticity in the range from 800 to 1400 N/mm2 and/or an elongation at break in the range from 200 to 800%, and the elongation at break of the material of the device in the form of a cartridge front lying in the range from 50 to 200% and/or the modulus of elasticity lying in the range from 2000 to 3000 N/mm2,
    or
    the material of the device in the form of a cartridge front having a modulus of elasticity in the range from 800 to 1400 N/mm2 and/or an elongation at break in the range from 200 to 800%, and the elongation at break of the material of the device in the form of a mixer lying in the range from 50 to 200% and/or the modulus of elasticity lying in the range from 2000 to 3000 N/mm2.
  2. Device in the form of a dynamic mixer with at least two orifices, at least one of which is non-circular and which allow virtually the entire surface area available for the inlet orifice to be utilized, for use in a combination according to Claim 1,
    the material of the mixer having a modulus of elasticity in the range from 800 to 1400 N/mm2 or 2000 to 3000 N/mm2
    and/or
    an elongation at break in the range from 200 to 800% or 50 to 200%.
  3. Device according to Claim 2, the at least one non-circular orifice being kidney-shaped, oval or sickle-shaped.
  4. Device according to either of Claims 2 and 3, which has an orifice for a drive shaft in which there is located a shaped groove which is triangular, rectangular, pentagonal, hexagonal, heptagonal, octagonal, star-shaped or formed as a hollow pinion.
  5. Device in the form of a dynamic mixer according to one of Claims 2 to 4, comprising a base plate (1), in which the non-circular inlet orifices (2, 3) and the orifice (4) for the drive shaft are made, and a rotor (5), which is rotatably mounted in the base plate (1) and to which mixing blades (6) are attached, and a shaped groove (7) for receiving the drive shaft, and a housing (8) in which the rotor (5) runs.
  6. Device in the form of a cartridge front with at least two outlet orifices, at least one of which is non-circular, for use in a combination according to Claim 1,
    the material of the cartridge front having a modulus of elasticity in the range from 800 to 1400 N/mm2 or 2000 to 3000 N/mm2
    and/or
    an elongation at break in the range from 200 to 800% or 50 to 200%.
  7. Device according to one of Claims 2 to 6, fibre-reinforced and/or filled materials being used.
  8. Method for producing a device in the form of a dynamic mixer according to one of Claims 2 to 5 or a cartridge front according to Claim 6 by injection-moulding.
  9. Use of the combination according to Claim 1 or of the device in the form of a dynamic mixer according to one of Claims 2 to 5 or of the device in the form of a cartridge front according to Claim 6 for mixing highly viscous, pasty and/or thick-flowing materials.
  10. Use according to Claim 9, the materials to be mixed being highly viscous impression materials from the dental sector, which are forced by means of electrically driven rams out of film bags which have been pushed into suitable cartridges, or which are forced out of cartridges which are filled directly with the material without a film bag being used.
  11. Use of a material with a modulus of elasticity in the range of greater than 200 N/mm2 and/or an elongation at break in the range from 2 to 1000% for producing a device in the form of a dynamic mixer or a cartridge front, with at least two orifices, one of which is non-circular, the device in the form of a dynamic mixer being designed for connection to at least one device in the form of a cartridge front, which has corresponding orifices.
EP01923721A 2000-04-20 2001-04-11 Mixer Expired - Lifetime EP1274501B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10019893A DE10019893C2 (en) 2000-04-20 2000-04-20 Device in the form of a dynamic mixer or a cartridge front and their use
DE10019893 2000-04-20
PCT/EP2001/004141 WO2001080986A1 (en) 2000-04-20 2001-04-11 Mixer

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EP1274501A1 EP1274501A1 (en) 2003-01-15
EP1274501B1 true EP1274501B1 (en) 2004-06-23
EP1274501B2 EP1274501B2 (en) 2008-01-23

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EP (1) EP1274501B2 (en)
JP (1) JP2003531000A (en)
AT (1) ATE269754T1 (en)
AU (1) AU2001250422A1 (en)
DE (2) DE10019893C2 (en)
WO (1) WO2001080986A1 (en)

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Publication number Publication date
US20030137898A1 (en) 2003-07-24
DE50102677D1 (en) 2004-07-29
DE10019893C2 (en) 2003-05-28
EP1274501A1 (en) 2003-01-15
JP2003531000A (en) 2003-10-21
ATE269754T1 (en) 2004-07-15
EP1274501B2 (en) 2008-01-23
WO2001080986A1 (en) 2001-11-01
AU2001250422A1 (en) 2001-11-07
DE10019893A1 (en) 2001-10-31

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