EP0299433B1 - Dispositif pour le mélange ou homogénéisation du contenu d'une cartouche - Google Patents

Dispositif pour le mélange ou homogénéisation du contenu d'une cartouche Download PDF

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Publication number
EP0299433B1
EP0299433B1 EP88111145A EP88111145A EP0299433B1 EP 0299433 B1 EP0299433 B1 EP 0299433B1 EP 88111145 A EP88111145 A EP 88111145A EP 88111145 A EP88111145 A EP 88111145A EP 0299433 B1 EP0299433 B1 EP 0299433B1
Authority
EP
European Patent Office
Prior art keywords
mixing
piston
cartridge
rod
set forth
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
EP88111145A
Other languages
German (de)
English (en)
Other versions
EP0299433A1 (fr
Inventor
Werner Brüning
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.)
Alfred Fischbach KG Kunststoff Spritzgusswerk
Original Assignee
Alfred Fischbach KG Kunststoff Spritzgusswerk
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 Alfred Fischbach KG Kunststoff Spritzgusswerk filed Critical Alfred Fischbach KG Kunststoff Spritzgusswerk
Priority to AT88111145T priority Critical patent/ATE73095T1/de
Publication of EP0299433A1 publication Critical patent/EP0299433A1/fr
Application granted granted Critical
Publication of EP0299433B1 publication Critical patent/EP0299433B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3255—Containers provided with a piston or a movable bottom, and permitting admixture within the container

Definitions

  • the invention relates to a mixing device for mixing and homogenizing pasty or flowable masses according to the preamble of claim 1.
  • Pasty or flowable masses often have to be mixed or homogenized before processing. Mixing is particularly necessary if the masses consist of several components, e.g. made of synthetic resin and hardener, which are brought together immediately before processing. Such compositions are used, for example, as sealants or adhesives or as plastic impression compositions.
  • Mixing devices which contain several components in different compartments separated from one another. Before the mixing, the compartments are connected to one another, or a partition located between the compartments is destroyed or eliminated, so that the components are connected to one another Can come in contact.
  • the masses in a cartridge are then processed with a mixing element which has a rod which leads out of the cartridge and which can be axially moved and rotated by hand. The mass contained in the cartridge can then be pressed out of the cartridge by moving a piston.
  • a mixing device with the features specified in the preamble of claim 1 is known from FR-A-2 447 875.
  • This mixing device has a mixing element which is fixedly connected to a rod and which can be moved in the longitudinal direction inside a cartridge and can be rotated around it to mix the cartridge contents.
  • a piston which is hollow on the inside and into which a locking element of the mixing element can be drawn in, so that the piston forms a unit with the mixing element which can be advanced by moving the shaft to squeeze out the contents of the cartridge.
  • This mixing device can not be used in conjunction with the usual squeezing devices that have a plunger for advancing the piston.
  • the shaft which is firmly connected to the mixing element, protrudes far from the rear end of the cartridge when the cartridge is still filled. For this reason, the known mixing device also requires a lot of space when the cartridge is filled with flowable mass and the shaft protrudes from it.
  • the invention has for its object to provide a mixing device of the type specified in the preamble of claim 1, which is characterized by a particularly simple structure and simple handling.
  • the mixing element is connected through the piston to the rod required for its actuation.
  • the mixing element is moved back and forth in the axial direction of the cartridge, whereby it can be rotated about its longitudinal axis at the same time.
  • the mixing element is placed against the end wall of the piston and the rod is separated from the mixing element while the mixing element is held by the piston.
  • the mixing element forms together with the piston a single unit that can be used to squeeze the mixture out of the cartridge.
  • commercially available squeezing devices can be used, which are common for squeezing sealants out of cartridges.
  • a particular advantage is that the conventional tubular cartridges can be used without any modification.
  • the mixing element which can be moved separately from the piston during the mixing process, is connected to the piston after the mixing process has ended.
  • the mixing element closes the passage opening of the piston so that the end wall of the piston is now tight.
  • the mixing element is, as it were, part of the piston and is not moved independently during the subsequent pressing process.
  • the piston is to a certain extent only completed by the mixing element attached to it.
  • the piston serves to close the cartridge and as a guide and sealing element for the rod.
  • the mixing element can also be connected to the piston if the rod is not yet connected to the mixing element.
  • the rod is connected to the mixing element, which is held in place by the piston.
  • the connection of the mixing element to the piston is released, so that the mixing element can carry out the mixing process unimpeded, while the passage opening of the piston seals against the rod and prevents that no mass can escape from the cartridge along the rod.
  • the mixing element is expediently provided with a hollow shaft which is received in a sealing manner by a sleeve which projects from the front piston surface to the rear.
  • the shaft has the same outer diameter as the rod that can be connected to it.
  • the connection between the rod and the hollow shaft is preferably made by threads, in particular by multi-start threads.
  • the mixing element has a flat disc with openings and wings.
  • the wings can be swung out of the plane of the window and the edges of two wings facing or facing each other are expediently connected to the window in an articulated manner.
  • the vanes which are pivoted as a function of the axial direction of movement of the mixing member through the pasty mass, each adjust so that when the mixing member rotates in one direction of rotation, one of the two vanes cut helically through the mass, while the other wing offers increased flow resistance. In this way it is ensured that the mixing element cannot cut through the mass in a helical manner with little resistance, but that at least one of the wings exerts a considerable agitation effect on the mass.
  • the mixing device according to the invention can be used to homogenize a mass contained in the cartridge before use. In this case, the entire mass is contained in the cartridge. Another application is to mix multiple components. In this case, the component which is to form the larger proportion of the mixture is expediently already contained in the cartridge, while the other component is supplied later. The smaller component can be fed through the spout in the end wall of the cartridge that will later be used for pressing. This spout must of course be closed with a cap during the mixing process.
  • the mixing device shown has a commercially available cartridge 10, which consists of a plastic injection molded part, can consist of metal or paper material.
  • the cartridge 10 is designed as an elongated cylindrical tube, which is closed at one end by an end wall 11, while the opposite end 12 is open.
  • On the end wall 11 there is an externally threaded spout 13 through which the mass can be expelled from the cartridge. In the state shown, the spout 13 is closed with a separable wall 14.
  • the cartridge 10 contains a piston 15, the cylindrical peripheral wall 16 of which rests sealingly on the inner wall of the cartridge.
  • the front piston surface 16a forming the end wall is flat and from it the peripheral wall 16, an annular reinforcement wall 17 and a sleeve 18 protrude to the rear or to the outside.
  • the peripheral wall 16 projects beyond the reinforcement wall 17 and the sleeve 18 towards the rear end. All three walls 16, 17 and 18 are connected to the piston wall 16a only at their front end, while the rear ends protrude freely.
  • the sleeve 18 encloses the passage opening 19 which leads axially through the piston 15.
  • the edge of the cartridge at the end 12 is deformed in such a way that a stop 12a which holds the piston in the cartridge is formed.
  • the cartridge is filled through the opened spout 13, the wall 14 of which is separated.
  • the passage opening 19 of the piston 15 is closed by the mixing element 20.
  • the mixing element 20 has a perforated disk 21 which lies flat against the piston wall 16 and whose outer diameter is somewhat smaller than that of the piston 15.
  • a hollow shaft 22 protrudes from the rear of the disk 21. This shaft 22 completely and sealingly fills the cross section of the sleeve 19. Inside the shaft 22 there is an internal thread into which the threaded connector 23a is screwed at the front end of the rod 23.
  • the threads of shaft 22 and threaded connector 23a are two-start threads. This has the advantage that finding a thread engagement by turning the rod 23 is easier and that the threads can be tightened more quickly.
  • the shaft 22 does not extend to the rear end of the sleeve 18.
  • the main part of the rod 23, whose diameter is equal to that of the shaft 22, projects into this end behind the threaded connector 23a.
  • the disk 21 has a plurality of openings 24, 25, 26.
  • the openings 24 and 25 contain wings 27 and 28, which are integrally connected to the disc 21 by film joints 29 and 30, respectively.
  • the film joints 29 are located on the radial edges leading in the clockwise direction, while the film joints 30 are arranged on the wings 28 in each case on the radial edge leading in the counterclockwise direction.
  • the openings 26 are simple holes.
  • Each recess 31 can cooperate with a holding member 32 of the piston 15.
  • the holding member 32 is a projection protruding forward from the piston surface 16a, which protrudes into a recess 31 when the disk 21 is in contact with the piston surface 16a.
  • the holding member 32 forms a rotation lock, which prevents the disk 21 from being rotated relative to the piston 15. It is thus possible to unscrew the rod 23 from the mixing element 20 while the mixing element is held against rotation by the holding element 32 of the piston 15.
  • the piston 15 is supported in the interior of the cartridge 10 by its peripheral wall 16, the rotational resistance being so great that the piston 15 is not rotated within the cartridge 10 when the rod 23 is rotated.
  • the projection can have a sawtooth-shaped course, so that the mixing element 20 is blocked relative to the piston 15 only in one direction of rotation, but can rotate in the other.
  • the holding member 32 should prevent the mixing member 20 from rotating.
  • the mixing device is supplied in the state shown in FIG. 1, but without a screwed-in shaft 23, it being possible for the mass to be pressed out or one component of this mass to be located inside the cartridge 10.
  • the wall 14 of the spout 13 can first be cut off in order to introduce the additional component into the cartridge 10. Then the spout 13 is closed with a screw cap (not shown). Now only the rod 23 needs to be screwed into the shaft 22 of the mixing element. The rod 23 can then be driven with a prime mover, e.g. a hand drill, which rotates the rod and with this the mixing element 20. During this rotation, the threads of threaded connector 23a and shaft 22 tighten. The rod 23 can now be moved axially through the cartridge 10, all areas of the cartridge being affected by the mixing action. The wings 27, 28 of the mixing element 20 automatically adjust themselves so that they point to the rear in relation to the axial movement.
  • a prime mover e.g. a hand drill
  • the mixing member 20 is withdrawn until it abuts the piston surface 16.
  • the rod 23 is then rotated counter to its previous direction of rotation in order to release the threaded engagement with the mixing element 20.
  • the mixing element 20 is supported on the holding element 32.
  • the shaft 22 seals the passage opening 19 of the piston 15.
  • the mixing element 20 has an axial extension 33 which protrudes towards the front and can penetrate into the interior of the spout 13 during mixing in order to also move the mass located in the spout.
  • the approach 33 has a non-circular cross-section; in the present exemplary embodiment, it consists of three star-shaped ribs. When the cartridge is pressed out, the attachment 33 displaces material from the spout 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Package Specialized In Special Use (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Claims (9)

  1. Dispositif de mélange pour mélanger ou homogénéiser des masses pâteuses ou fluides, comportant:
    - une cartouche de forme tubulaire (10) qui présente à une extrémité une paroi frontale (11) avec un embout (13),
    - un organe de mélange (20) qui est contenu dans la cartouche (10) et qui est relié avec une tige (23) qui sort hors de l'extrémité ouverte de la cartouche,
    - et un piston (15) pour extraire, par pression, le contenu de la cartouche, le piston (15) présentant une ouverture de passage axiale (19) et un organe d'arrêt (32) pour arrêter l'organe de mélange,
       dispositif caractérisé,
       par le fait que la tige (23) est reliée, de façon amovible, avec un axe creux (22) de l'organe de mélange (20), par le fait que l'organe d'arrêt (32) est une saillie qui vient saillir, vers l'avant, de la paroi frontale (16a) du piston (15), qui vient en prise, en tant que sécurité à l'égard d'une rotation, dans un évidement (31) de l'organe de mélange (20), et qui empêche l'organe de mélange (20) de tourner lors de sa séparation d'avec la tige (23), et par le fait qu'après sa séparation d'avec la tige (23), l'organe de mélange (20) obture l'ouverture de passage (19) avec l'axe (22).
  2. Dispositif de mélange selon la revendication 1, caractérisé par le fait que le piston (15) présente une douille (18) qui vient en saillie, vers l'arrière, de la surface du piston (16a), qui forme un siège pour l'axe creux (22), et par le fait que l'axe (22) présente un mécanisme de couplage pour la liaison avec la tige (23).
  3. Dispositif de mélange selon la revendication 2, caractérisé par le fait que le mécanisme de couplage est un filetage.
  4. Dispositif de mélange selon la revendication 3, caractérisé par le fait que le filetage est au moins à deux filets.
  5. Dispositif de mélange selon l'une des revendications 1-4, caractérisé par le fait que la saillie est en forme de dent de scie et n'arrête l'organe de mélange (20) par rapport au piston (15) que dans le sens du dévissage de la tige (23).
  6. Dispositif de mélange selon l'une des revendications 1 à 5, caractérisé par le fait que l'organe de mélange (20) est un disque (21) présentant des découpes traversantes (24, 25, 26), tel que des découpes (24, 25) présentant des ailes (27, 28) qui peuvent se rabattre hors du plan du disque.
  7. Dispositif de mélange selon la revendication 6, caractérisé par le fait qu'au moins deux ailes (27, 28) sont reliées, par articulation, avec le disque (21), leurs arêtes radiales étant orientées l'une vers l'autre ou en sens opposé de l'une à l'autre.
  8. Dispositif de mélange selon l'une des revendications 1 à 7, caractérisé par le fait que l'organe de mélange (20) présente un prolongement axial (33), à profil non rond, qui pénètre dans l'embout (13) d'extraction par pressage prévu dans la paroi frontale (11) de la cartouche (10).
  9. Dispositif de mélange selon l'une des revendications 1 à 8, caractérisé par le fait qu'à l'extrémité arrière (12) de la cartouche (10) est prévue une butée (12a) pour empêcher que le piston (15) glisse vers l'extérieur.
EP88111145A 1987-07-15 1988-07-12 Dispositif pour le mélange ou homogénéisation du contenu d'une cartouche Expired - Lifetime EP0299433B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88111145T ATE73095T1 (de) 1987-07-15 1988-07-12 Vorrichtung zum mischen oder homogenisieren des inhalts einer kartusche.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873723309 DE3723309A1 (de) 1987-07-15 1987-07-15 Mischvorrichtung
DE3723309 1987-07-15

Publications (2)

Publication Number Publication Date
EP0299433A1 EP0299433A1 (fr) 1989-01-18
EP0299433B1 true EP0299433B1 (fr) 1992-03-04

Family

ID=6331572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111145A Expired - Lifetime EP0299433B1 (fr) 1987-07-15 1988-07-12 Dispositif pour le mélange ou homogénéisation du contenu d'une cartouche

Country Status (8)

Country Link
US (1) US4966468A (fr)
EP (1) EP0299433B1 (fr)
JP (1) JPH02500824A (fr)
KR (1) KR920010797B1 (fr)
AT (1) ATE73095T1 (fr)
CA (1) CA1283903C (fr)
DE (2) DE3723309A1 (fr)
WO (1) WO1989000536A1 (fr)

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FR2798650B1 (fr) * 1999-09-16 2002-01-04 Oreal Dispositif de distribution destine a equiper un recipient
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US7524103B2 (en) * 2003-11-18 2009-04-28 Boston Scientific Scimed, Inc. Apparatus for mixing and dispensing a multi-component bone cement
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US7776010B2 (en) 2006-05-01 2010-08-17 Ultradent Products, Inc. Syringe-in-syringe hollow inner barrel/plunger with integral seal and rupturable membrane and related kits, systems, and methods
US7905654B1 (en) * 2006-11-13 2011-03-15 Luis Cordero Hand held manually operated mixer
US8454558B2 (en) 2007-02-09 2013-06-04 Ultradent Products, Inc. Syringe-in-syringe hollow inner barrel/plunger with integral seal and rupturable membrane and related kits, systems and methods
US8696192B2 (en) * 2007-05-10 2014-04-15 Fluid-Quip, Inc. Multiple helical vortex baffle
US7879002B2 (en) * 2007-10-31 2011-02-01 Ultradent Products, Inc. Mixing device including a plunging mixing member for use with a syringe
US8383163B2 (en) 2008-01-29 2013-02-26 Ultradent Products, Inc. Fluoride varnish compositions including an organo phosphoric acid adhesion promoting agent
US8128591B2 (en) * 2008-11-10 2012-03-06 Warsaw Orthopedic, Inc. Multiple component mixing and delivery system
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EP3645138A4 (fr) * 2017-06-28 2021-03-24 The University of Tasmania Dispositif de mélange liquide-liquide approprié pour la préparation d'échantillon par extraction liquide-liquide
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Also Published As

Publication number Publication date
DE3868739D1 (de) 1992-04-09
KR920010797B1 (ko) 1992-12-17
CA1283903C (fr) 1991-05-07
US4966468A (en) 1990-10-30
EP0299433A1 (fr) 1989-01-18
KR890701448A (ko) 1989-12-20
WO1989000536A1 (fr) 1989-01-26
DE3723309A1 (de) 1989-01-26
ATE73095T1 (de) 1992-03-15
JPH02500824A (ja) 1990-03-22

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