EP0749530B1 - Chapeau doseur - Google Patents

Chapeau doseur Download PDF

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Publication number
EP0749530B1
EP0749530B1 EP95908865A EP95908865A EP0749530B1 EP 0749530 B1 EP0749530 B1 EP 0749530B1 EP 95908865 A EP95908865 A EP 95908865A EP 95908865 A EP95908865 A EP 95908865A EP 0749530 B1 EP0749530 B1 EP 0749530B1
Authority
EP
European Patent Office
Prior art keywords
metering
accordance
metering cap
rotors
line
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.)
Expired - Lifetime
Application number
EP95908865A
Other languages
German (de)
English (en)
Other versions
EP0749530A1 (fr
Inventor
Werner Fritz Dubach
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.)
Medisize Schweiz AG
Sika AG
Original Assignee
Createchnic AG
Sika AG
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 Createchnic AG, Sika AG filed Critical Createchnic AG
Publication of EP0749530A1 publication Critical patent/EP0749530A1/fr
Application granted granted Critical
Publication of EP0749530B1 publication Critical patent/EP0749530B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/751—Discharging by opening a gate, e.g. using discharge paddles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2521—Flow comparison or differential response
    • Y10T137/2526—Main line flow displaces or entrains material from reservoir

Definitions

  • the present invention relates to a metering attachment for the metered assembly of two flowable components, which can be placed directly or indirectly on an actively emptied container of the main component and which has a suction or supply line and a discharge line.
  • both components In the case of mixtures of two flowable components which are to be metered and put together in approximately the same ratio, both components have been delivered in cartridges and both cartridges have been squeezed out in a single squeezing device at the same time.
  • EP-A-022'179 shows a metering device with two pumps housed in a housing.
  • the main medium drives a turbine-like hydraulic motor that acts on a piston pump that supplies an admixing component to the main component.
  • the system is suitable for low-viscosity media, but the hydraulic motor only allows inaccurate volumetric dosing.
  • the mixing device according to US-A-3,054,417 works precisely.
  • Three pumps are used here.
  • the main component is under pressure and drives a volumetric pump that drives two pumps for the admixing component via a gear.
  • the second pump serves the first pump to build up pressure and has a bypass for recirculation, a pressure limiting valve being arranged in the bypass.
  • the second pump works as a pure metering pump. If necessary, the pressure build-up pump can be provided with a separate drive motor.
  • the admixture takes place only in the outlet line. There is no mixing chamber.
  • the flow of the main component is guided in a straight line in order to achieve the highest possible output.
  • the device is complex and cannot be made from plastic with reasonable effort.
  • a metering device with a simple structure shows the US-A-5'012'837.
  • the main component is pressurized on a double-bladed metering pump operated as a hydraulic motor. This drives the shaft of a gear pump arranged in parallel for the admixing component.
  • the admixture is very precise and also allows low admixture ratios of 1: 100.
  • the device does not include a mixing unit. Both components are fed separately and conveyed separately. There is therefore no mixing chamber. Both components are inserted and exported on the same side of the housing, which leads to enormous flow resistance for viscous components.
  • the straight-line arrangement avoids flow resistance and the direct arrangement of the mixing chamber in an area in which the kneading effect of the metering pump is still present leads to sufficient mixing even with viscous components.
  • containers for the admixture component can also be integrated in the metering attachment.
  • claim 5 proposes the attachment of a pressure compensation line. If the admixture component is relatively thin, then according to claim 6 Communicate the pressure compensation line with the outside atmosphere. However, if the admixture component is viscous, it is advantageous, as proposed in claim 7, to apply the pressure of the main component via the pressure compensation line under the flying piston.
  • FIGS. 1 and 2 While the flow paths of the two components to be mixed and metered are shown in particular in FIGS. 1 and 2, the means for conveying and metering the two components are shown in more detail in FIGS. 3 and 4.
  • the cartridge which contains the main component in terms of quantity, can only be recognized in the approach in FIG. 3.
  • the cartridge is labeled C. It is itself held in a press which is only roughly indicated in Figures 1 and 3. This press P is used for the active emptying of the cartridge C.
  • the embodiments of the dosing attachment shown here are made entirely of plastic.
  • the metering attachment housing 1 is divided vertically or horizontally into two housing parts, as shown in FIG. 3 or as shown in FIGS. 1 and 2, into three horizontally cut housing parts. However, this has no functional significance.
  • the cartridge C contains the main component, which is mostly viscous.
  • the dosing attachment is especially intended for two-component adhesives.
  • the metering housing 1 here consists of three separately manufactured plastic parts.
  • the base plate 2 can be seen at the bottom, via which the connection to the cartridge, not shown here, is established.
  • the base plate 2 has a central opening 6 which, for example, can have an internal thread 7 for connection to the cartridge.
  • the cylindrical middle part 3 in which the feed line 8 for the main component coming from the cartridge is located centrally and in alignment above the opening 6.
  • the feed line 8 opens into a metering chamber 9, the lower half of which is formed in the middle part 3 and the upper half in the top plate 4 arranged above it.
  • a mixing chamber 10 is formed above the metering chamber 9, in which the second component is introduced into the first, the main component.
  • the mixing chamber 10 merges directly or already forms part of the discharge line 11 following in the flow direction of the metering chamber.
  • the mixing chamber 10 is in open communication with the metering chamber 9. In this area there is still a certain kneading movement by the metering rotors, which ensures sufficient mixing even with viscous components.
  • the nozzle-shaped discharge line 11 is provided, for example, with an external thread 12, which can be used on the one hand to attach an extension of the discharge line or on the other hand to attach a screw cap 13.
  • the screw cap shown in FIG. 1 additionally has a central sealing pin 14, which can extend down to a delivery line in the area of the mixing chamber 10.
  • the pressure generated by the press P in the cartridge C thus presses the quantitative main component from the cartridge C through the opening 6 in the base plate 2, the suction or supply line 8 into the metering chamber 9 of the cylindrical central part 3 and then via the mixing chamber 10 in the discharge line 11 of the top plate 4.
  • the flow of the main component in terms of quantity drives the two intermeshing metering rotors in the metering chamber 9. However, this will be discussed in more detail later with reference to FIGS. 3 and 4.
  • a feed opening 15 is arranged to run vertically. This feed opening 15 opens into a nozzle 16 in the cylindrical middle part 3.
  • the metering attachment can be in front of the First-time use can thus be filled via the feed opening 15 and the nozzle 16 with the second, smaller quantity admixing component if a second container 18 is provided internally in the metering attachment housing for the second component. If the internal container 18 is filled, it can be closed, for example by means of a screw pin 17 in the socket 16. However, it is also possible to arrange the container for the second component externally, as shown in broken lines in FIG. 1, in which case, of course, the screw pin 17 is omitted. The internal container 18 is then also omitted or reduced to a smaller compensation container. As a variant, this expansion tank 21 is also only shown in broken lines in FIG. 1.
  • the container 18 or 20 is in direct or indirect communication with the suction-side end 22 of a delivery line 23.
  • the delivery line 23 leads from the suction end 22 via a gear pump 24 to the discharge end 25 in the area of the mixing chamber 10.
  • the means for conveying and metering the two components can be clearly seen from FIGS. 3 and 4.
  • the metering chamber 9 is penetrated by two shafts 30, the a shaft is designed in one piece with a metering rotor 31, while the second metering rotor 31 can be clamped on the second rotor shaft in an angle-locked manner by means of a grub screw 32.
  • the metering rotors 31 are shown here as a preferred embodiment as two-bladed rotors. This embodiment is particularly preferred for viscous components. However, if the main component in terms of quantity is rather thin, you will tend to use multi-bladed metering rotors.
  • One of the rotor axes 30 opens into an output pin 33 which, for example, has a square cross-section on which one of the two gearwheels 34 is seated in a rotationally fixed manner, while a second gearwheel 34 ′ meshing with this gearwheel 34 meshes here and thus forms a gearwheel pump.
  • the gear pump 24 formed from the two gear wheels 34 and 34 'thus delivers exactly according to the amount which is delivered through the metering chamber 9 by means of the metering rotors 31.
  • the mixing ratio of the two components is therefore only dependent on the geometric relationships of the metering means 9 and 31 or the gear pump 24.
  • the container 18 for the second component is arranged in the housing of the metering attachment 1
  • the gear pump will generate a negative pressure in the container 18 over time and the second component with the gear wheels of the gear pump will no longer be in Touch comes.
  • a flying piston 35 provided. With the negative pressure in the container 18, the flying piston 35 follows automatically and thus reduces the remaining volume of the container 18 of the second component.
  • the invention provides a pressure compensation line. A simple solution is shown in broken lines in FIG. 3, in the form of a pressure compensation line 36, which communicates directly with the outside atmosphere.
  • the pressure compensation line 37 communicates between the suction or supply line 8 and the container 18.
  • the pressure of the main component prevailing in the intake or supply line 8 can thus continue via the pressure compensation line 37 in the area below the flying piston 35 in the second container 18. This guarantees that the gear pump 24 is always connected to the second admixing component.
  • the basic idea of the invention is therefore that the applied pressure of the main component in terms of quantity is used to drive the metering rotors, which at the same time drive a gear pump to convey the second component.
  • the discharge end 25 of the delivery line 23 can be designed differently. Here it is preferably called a designed through the discharge line 11 in which at least one discharge opening 26 is provided on the side remote from the flow.
  • gearwheels which form a second or further gearwheel pumps could of course also be mounted on the shafts of the metering rotors.
  • the entire metering attachment can be designed symmetrically and thus have a gear pump on both sides.
  • the components to be dosed can be in any volume ratio.
  • main component and secondary or admixing component are only to be understood as declaratory.

Abstract

Un premier composant d'une substance fluide est exprimé d'une cartouche (C) pouvant être vidée au moyen d'une presse. Le composant principal s'écoule dans le conduit d'amenée (8) jusqu'au conduit de décharge (11), mettant en rotation deux rotors (31) montés dans la chambre de dosage (9) à l'intérieur du boîtier (1). Des pignons montés sur les arbres (30) des rotors (31) s'engrènent et forment ainsi une pompe à engrenages (24). La pompe à engrenages (24) refoule par un conduit de refoulement un composant à mélanger contenu dans un récipient intégré (18), jusqu'au conduit de décharge (11). Ce chapeau doseur permet de mélanger au moins deux composants dans des proportions extrêmement précises.

Claims (13)

  1. Chapeau doseur fait en matière synthétique pour l'amalgame dosé d'au moins deux composants coulants, qui présente une conduite d'alimentation (8) et une conduite d'évacuation (11), deux rotors (31) de dosage s'engrenant étant disposés dans le logement du chapeau doseur (1), lesquels peuvent être actionnés par le composant principal se trouvant sous pression, et les deux rotors (31) de dosage actionnant une pompe (24) à engrenages pour le composant ajouté qui est amené d'au moins un autre conteneur (18, 20) dans le composant principal par le biais d'une conduite de transport (23), caractérisé en ce que la conduite d'alimentation (8) et la conduite d'évacuation (11) sont superposées de manière à s'aligner au moins approximativement dans le logement du chapeau doseur (1) et qu'entre les rotors (31) de dosage et la conduite d'évacuation (11), une chambre de mélange (20) est disposée, dans laquelle le composant ajouté peut être amené par une conduite de transport (23) plongeant dans celui-ci dans le composant principal, la chambre de mélange (10) étant en liaison ouverte avec la chambre de dosage (9) dans laquelle les rotors tournent, ce qui permet aux rotors de dosage de contribuer au mélange dans la chambre de mélange.
  2. Chapeau doseur selon la revendication 1, caractérisé en ce qu'au moins un autre conteneur (18) pour le composant ajouté est disposé de manière à être lui-même intégré dans le logement du chapeau doseur (1).
  3. Chapeau doseur selon la revendication 1, caractérisé en ce que le deuxième conteneur (20) pour le composant ajouté peut être accouplé au logement du chapeau doseur (1).
  4. Chapeau doseur selon la revendication 2, caractérisé en ce qu'un piston (35) flottant est disposé dans le conteneur (18) intégré.
  5. Chapeau doseur selon la revendication 4, caractérisé en ce qu'une conduite de compensation de pression (36, 37) débouche dans la région inférieure dudit au moins un conteneur (18) intégré.
  6. Chapeau doseur selon la revendication 5, caractérisé en ce que la conduite de compensation de pression (36) communique avec l'atmosphère extérieure.
  7. Chapeau doseur selon la revendication 5, caractérisé en ce que la conduite de compensation de pression (37) communique avec la conduite d'alimentation (8) pour le composant principal.
  8. Chapeau doseur selon la revendication 1, caractérisé en ce qu'au moins une roue dentée (34) de la pompe (24) à engrenages est disposée de manière à ne pas tourner sur au moins un des arbres des deux rotors (31) de dosage, laquelle roue dentée s'engrène avec une deuxième roue dentée de la pompe à engrenages.
  9. Chapeau doseur selon la revendication 8, caractérisé en ce que la deuxième roue dentée (34') de la pompe (24) à engrenages est disposée de manière à tourner librement sur l'arbre du deuxième rotor (31) de dosage.
  10. Chapeau doseur selon la revendication 1, caractérisé en ce que les deux rotors (31) de dosage sont réalisés avec deux pales.
  11. Chapeau doseur selon la revendication 1, caractérisé en ce que la conduite de transport (23) pour les composants ajoutés est formé par un petit tuyau traversant la chambre de mélange (10), lequel présente au moins une ouverture d'évacuation (26) sur le côté à l'écart du flux.
  12. Chapeau doseur selon la revendication 2, caractérisé en ce que ledit au moins un conteneur intégré dans le chapeau doseur est pourvu d'une ouverture d'admission (15) intégrée qui peut être fermée au moyen d'un bouchon fileté (17).
  13. Chapeau doseur selon la revendication 11, caractérisé en ce que la conduite d'évacuation (11) peut être fermée avec un couvercle à visser (13) avec tige d'étanchéité (14), qui est tellement long qu'en position fermée, il repose de manière hermétique sur ladite au moins une ouverture d'évacuation dans la conduite de transport (23).
EP95908865A 1994-03-07 1995-02-24 Chapeau doseur Expired - Lifetime EP0749530B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH66594 1994-03-07
CH665/94 1994-03-07
PCT/CH1995/000042 WO1995024556A1 (fr) 1994-03-07 1995-02-24 Chapeau doseur

Publications (2)

Publication Number Publication Date
EP0749530A1 EP0749530A1 (fr) 1996-12-27
EP0749530B1 true EP0749530B1 (fr) 1997-12-03

Family

ID=4192285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95908865A Expired - Lifetime EP0749530B1 (fr) 1994-03-07 1995-02-24 Chapeau doseur

Country Status (11)

Country Link
US (1) US5558116A (fr)
EP (1) EP0749530B1 (fr)
JP (1) JP3516685B2 (fr)
AU (1) AU681762B2 (fr)
CA (1) CA2183884C (fr)
DE (1) DE59501076D1 (fr)
ES (1) ES2110316T3 (fr)
MY (1) MY130091A (fr)
TW (1) TW310364B (fr)
WO (1) WO1995024556A1 (fr)
ZA (1) ZA951774B (fr)

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Publication number Priority date Publication date Assignee Title
WO2007128824A1 (fr) 2006-05-09 2007-11-15 Sika Technology Ag Composition de polyuréthane bi-composant ayant une haute résistance initiale

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DE19730424A1 (de) 1997-07-16 1999-01-21 Henkel Teroson Gmbh Vorrichtung zum Lagern und Auspressen von fließfähigen Zusammensetzungen
EP1006057A1 (fr) 1998-12-04 2000-06-07 Sika AG, vorm. Kaspar Winkler & Co. Dispositif de dosage
ES2231282T3 (es) * 1999-12-17 2005-05-16 Sika Schweiz Ag Adaptador, disposicion y procedimiento para retirar sustancias de bolsas tubulares multicamara, uso del adaptador y envase bolsa tubular.
DE10015290A1 (de) * 2000-03-28 2001-10-11 Henkel Teroson Gmbh Reaktives Schmelzstoff-Granulat für Isoliergals
RU2271857C1 (ru) * 2004-12-27 2006-03-20 Закрытое Акционерное Общество "Вектор" Способ нормированного смесеобразования и устройство для его осуществления
US7597145B2 (en) 2005-05-18 2009-10-06 Blue Marble Engineering, L.L.C. Fluid-flow system, device and method
EP1728807A1 (fr) 2005-05-31 2006-12-06 Sika Technology AG Adhésif thermofusible à deux composants contenant de l'eau
EP1967510A1 (fr) 2007-03-06 2008-09-10 Sika Technology AG Dialdimine, émulsion contenant de la dialdimine, ainsi que composition de polyuréthane à deux composants et ses utilisations
DE102010046054B4 (de) * 2010-09-22 2012-05-31 Heraeus Medical Gmbh Synchronisierte Austragsvorrichtung
DE102012205568A1 (de) 2012-04-04 2013-10-10 Robert Bosch Gmbh Dosierpumpe aus Kunststoff
DE102013205843B4 (de) 2013-04-03 2024-02-15 Syntegon Pouch Systems Ag Dosierpumpe aus Kunststoff
DE102013220242A1 (de) * 2013-10-08 2015-04-23 Robert Bosch Gmbh Drehkolbenpumpe aus Kunststoff
WO2019042967A1 (fr) 2017-09-01 2019-03-07 Sika Technology Ag Procédé amélioré de préfixation et de collage de pièces

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Publication number Priority date Publication date Assignee Title
WO2007128824A1 (fr) 2006-05-09 2007-11-15 Sika Technology Ag Composition de polyuréthane bi-composant ayant une haute résistance initiale

Also Published As

Publication number Publication date
AU681762B2 (en) 1997-09-04
TW310364B (fr) 1997-07-11
WO1995024556A1 (fr) 1995-09-14
EP0749530A1 (fr) 1996-12-27
JPH09509995A (ja) 1997-10-07
JP3516685B2 (ja) 2004-04-05
DE59501076D1 (de) 1998-01-15
ES2110316T3 (es) 1998-02-01
US5558116A (en) 1996-09-24
AU1704295A (en) 1995-09-25
MY130091A (en) 2007-06-29
ZA951774B (en) 1996-02-13
CA2183884C (fr) 2000-02-01
CA2183884A1 (fr) 1995-09-14

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