EP0502519B1 - Cartouche pour masses plastiques à composants multiples - Google Patents

Cartouche pour masses plastiques à composants multiples Download PDF

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Publication number
EP0502519B1
EP0502519B1 EP92103764A EP92103764A EP0502519B1 EP 0502519 B1 EP0502519 B1 EP 0502519B1 EP 92103764 A EP92103764 A EP 92103764A EP 92103764 A EP92103764 A EP 92103764A EP 0502519 B1 EP0502519 B1 EP 0502519B1
Authority
EP
European Patent Office
Prior art keywords
cartridge
moulded
shut
mouthpiece
header
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
EP92103764A
Other languages
German (de)
English (en)
Other versions
EP0502519A2 (fr
EP0502519A3 (en
Inventor
Frank Georg Ritter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE9102635U external-priority patent/DE9102635U1/de
Priority claimed from DE9102636U external-priority patent/DE9102636U1/de
Application filed by Individual filed Critical Individual
Publication of EP0502519A2 publication Critical patent/EP0502519A2/fr
Publication of EP0502519A3 publication Critical patent/EP0502519A3/de
Application granted granted Critical
Publication of EP0502519B1 publication Critical patent/EP0502519B1/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
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B05C17/00513—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the thread type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element

Definitions

  • the invention relates to multicomponent cartridges for plastic compositions, such as two-component adhesives or sealant compositions, in which the components are stored separately from one another before use and are only mixed together for use.
  • the invention relates to a multi-chamber cartridge made of plastic injection molding for two- or multi-component plastic masses, with at least two cartridge tube wall parts arranged one inside the other to form at least two chambers for receiving one material component each, an end wall part arranged at the front end of the cartridge tube wall parts, on which a mouthpiece for Output of the material components is formed from the cartridge, and with pistons inserted at the rear end of the cartridge tube wall parts for expressing the material components.
  • a multi-chamber cartridge of this type which corresponds to the preamble of claim 1, is known from EP-A-105181.
  • shut-off valves at the outlet which are intended to prevent the material from flowing back when the pressure on the pistons is removed.
  • these shut-off valves are designed as check valves and are arranged separately in the outlet channel of each chamber.
  • the shut-off valve described in U.S. Patent 4,846,373 has a rotatable valve plug arranged transversely in a neck extension of the cartridge end wall and having two parallel transverse bores which can be brought into and out of register with the two outlet channels of the two chambers by rotating the valve plug.
  • the aim of the invention is to improve a multi-chamber cartridge of the type mentioned so that it can be manufactured more easily and with simpler injection molding tools.
  • Another object of the invention is to be able to manufacture two-chamber cartridges for different mixing ratios of the two components with a reasonable amount of injection mold.
  • a still further object of the invention is to provide an improved shut-off valve at the outlet of a multi-chamber cartridge.
  • the invention accordingly includes a multi-chamber cartridge made of plastic injection molding for two- or multi-component plastic masses, with at least two cartridge tube wall parts arranged one inside the other to form at least two chambers for accommodating one material component each, an end wall part arranged at the front end of the cartridge tube wall parts, on which a piece for dispensing the Material components formed from the cartridge, pistons used at the rear end of the cartridge tube wall parts for expressing the material components, the end wall part being designed as a separate head piece and the cartridge tube wall parts likewise being each made separately, and wherein snap connections are provided for connecting the cartridge tube wall parts to the head piece.
  • the cartridge tube wall parts and the cartridge end wall part can each be manufactured separately, as a result of which the required injection molding tools can be made very simple and inexpensive.
  • the injection molding tools for the tube wall parts do not require any side shift functions, and the need for remaining side shift functions is reduced to the injection molding tool for the relatively small cartridge end wall part.
  • the multi-chamber cartridge according to the invention offers the possibility of reacting much more flexibly and quickly to short-term changes in the cartridge mixing ratio, for example in the case of a double coaxial cartridge, only the diameter of the inner tube of the cartridge, that is to say only the relevant simple tool, being changed or newly built.
  • the end wall part can be designed for a number of different inner tube diameters which can be optionally fitted.
  • the undercuts required to implement the snap-in technique are dimensionally designed so that they can be produced in an injection molding tool without side-shift functions on the one hand and that snap-on action can be achieved by elastic material deformation on the other. Accordingly, the radial expansion of the undercuts is in the tenths of a millimeter range.
  • the invention includes a multi-chamber cartridge made of plastic injection molding for two- or multi-component plastic masses, with at least two Cartridge wall parts arranged one inside the other to form at least two chambers for receiving one material component each, an end wall part arranged at the front end of the cartridge pipe wall parts, on which a mouthpiece for dispensing the material components from the cartridge is formed, which is connected to each chamber through an outlet opening formed in the front wall part , Piston used at the rear end of the cartridge tube wall parts for pressing out the material components, and a mouthpiece shut-off device associated with the mouthpiece for optional closing or opening of the mouthpiece, which has a shut-off device which can be rotated between an open position and a closed position, the shut-off device having a disc which is soft is arranged on the mouthpiece of the cartridge transversely to the material flow direction directly in front of the outlet openings of the mouthpiece and can be rotated about an axis parallel to the longitudinal axis of the cartridge, and wherein the S disk itself has passage openings which can be brought
  • the actuation movement takes place as a rotary movement about an axis lying parallel to the longitudinal axis of the cartridge.
  • This operation of the shut-off device is perceived as pleasant and easy. It can be easily carried out with the hand holding the front end of the cartridge in the spray gun.
  • 1 and 2 consists of a cartridge outer tube 10, a cartridge inner tube 20, a cartridge head piece 30 forming the end wall, which is attached to the front end of the cartridge tubes, and corresponding pressure pistons 40, which are inserted at the rear end of the cartridge tubes .
  • a screw sleeve 50 is on the cartridge head piece 30 a locking mechanism 60 rotatable about the longitudinal axis is attached, onto which a mixing nozzle can be screwed.
  • 2 shows openings 34 in the cartridge head piece 30, which in the example shown in FIG. 1 are aligned with openings 61 of the closure mechanism.
  • the cartridge outer tube 10, the cartridge inner tube 20 and the cartridge head piece 30 each represent separate individual parts, the cartridge tubes 10 and 20 being latched into the cartridge head piece 30.
  • the cartridge head piece 30 each has coaxial, cylindrical projections 31 and 32 or 31a and 32a, which are each arranged with a radial distance corresponding to the wall thickness of the respective cartridge tube 10 or 29.
  • FIG. 1A shows the detail X encircled in FIG. 1 on an enlarged scale.
  • the radially outer projection 31 of the cartridge head piece 30 has an undercut 35 and the outer tube 10 of the cartridge has a nose 11 corresponding to the undercut 35, which are locked into one another.
  • both the undercut 35 and the nose 11 run continuously around the entire circumference of the cartridge head piece 30 or cartridge outer tube 10.
  • the radially outer projection 33 of the cartridge head piece 30, which serves for fastening the cartridge inner tube 20 has a corresponding undercut and the cartridge inner tube 20 has a corresponding nose.
  • the undercut 35 is preferably carried out in the radially outer projection, since when the head piece 30 is manufactured and the cartridge tubes 10 and 20 snap into the projections 31 and 32 or 31a and 32a, it is easier to bend the corresponding projection 31 or 31a, than in the opposite case a compression of the projection 32 or 32a.
  • the cartridge headpiece 30 has an eccentric neck 31b, which is divided on the inside by an arcuate web 32b into two chambers, each of which is connected to a material chamber formed by the cartridge tubes 10, 20, and which is provided on the outside with a thread .
  • the shut-off element 60 consists essentially of a hollow cylinder open at the top, which is divided into two partial cylinders by a central web 61, a thread for screwing on, for example, a mixing nozzle and two vanes 62 or another handle element for actuating the shut-off element 60 being provided.
  • the screw sleeve 50 engages in a circumferential groove 63 of the shut-off element, the overhang of this engagement being dimensioned such that a snap-in of both parts made of plastic is made possible by elastic material deformation and corresponding flank design.
  • This engagement between the screw sleeve 50 and the shut-off element 60 makes it possible to rotate the shut-off element 60 with respect to the retaining nut 50 and the neck 31 with a correspondingly selected axial compressive force.
  • the neck 31b of the cartridge head 30 is at its Shut-off element 60 facing end closed with a bottom 33, in which two openings 34 are provided, each opening being on one side of the web 32b and correspondingly connected to the respective material chamber (see also FIG. 2).
  • a bottom 64 of the cylinder 60 which forms the actual shut-off element has openings 65 which are congruent with respect to position and shape with respect to the openings 34 and which are shown one above the other in FIGS. 1 and 3; this corresponds to the open position of the shutoff element 60.
  • shut-off element 60 shows the closed position of the shut-off element 60.
  • the shut-off element 60 is rotated through 90 ° about its longitudinal axis, as a result of which the corresponding openings 34 of the head piece 30 and openings 65 of the shut-off element 60 no longer communicate and are therefore closed.
  • the shut-off device 60 can be rotated in a defined manner, it is subjected to a positive guidance shown in FIGS. 5 and 6. 5, the shut-off element 60 has at its lower end two diametrically opposite projecting stop lugs 66 which engage in corresponding guide grooves 35 (FIG. 6) embedded in the bottom 33 of the neck 31b and, after a corresponding rotation of the shut-off member 30, abut against the boundaries thereof, so that defined open and closed positions are given.
  • FIG. 6 shows another embodiment of the coaxial cartridge with a closure element 60 according to the invention.
  • the only difference from the embodiment shown in FIG. 1 is that the circular web 32b is practically completely missing, but instead the shut-off cylinder 60 extends down to the plane formed by the cartridge head piece 30.
  • This embodiment is preferable to that shown in FIG. 1 for reasons of injection molding with regard to the head piece 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Closures For Containers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (10)

  1. Cartouche à plusieurs compartiments réalisée par moulage par injection en matière plastique pour des masses plastiques à deux ou plus de deux composants, comprenant:
       au moins deux parties de paroi tubulaire de cartouche (10,20) pour la formation d'au moins deux compartiments recevant chacun un composant,
       une partie de paroi frontale (30) qui est disposée à l'extrémité avant des parties de paroi tubulaire de cartouche et sur laquelle est formé un embout (31) pour la distribution des composants contenus dans la cartouche, cet embout étant en communication avec chaque compartiment par une ouverture de sortie formée dans la partie de paroi frontale,
       des pistons (40) rapportés à l'extrémité arrière des parties de paroi tubulaire de cartouche, en vue de l'expulsion des composants,
       caractérisée par le fait que la partie de paroi frontale est réalisée sous forme de pièce de tête (30) séparée et les parties de paroi tubulaire de cartouche (10, 20) sont réalisées également sous forme de parties fabriquées séparément,
       et que des assemblages par encliquetage (11, 35) sont prévus pour relier les parties de paroi tubulaire de cartouche à la pièce de tête.
  2. Cartouche suivant la revendication 1,
    caractérisée par le fait que les assemblages par encliquetage entre la pièce de tête (30) et chaque partie de paroi tubulaire de cartouche (10, 20) comprennent un rebord annulaire (31, 32 ou 31a, 32a) formé sur une partie avec une gorge annulaire axiale présentant une section en contre-dépouille (35), et un bourrelet annulaire (11) complémentaire formé sur l'autre partie pour l'encliquetage dans la section en contre-dépouille (35) de la gorge annulaire.
  3. Cartouche suivant la revendication 2,
    caractérisée par le fait que le rebord annulaire est formé sur la pièce de tête (30) et le bourrelet annulaire sur la partie de paroi tubulaire (10, 20) et que la section en contre-dépouille (35) est formée dans le flanc radialement extérieur (31 ou 31a) de la gorge.
  4. Cartouche suivant la revendication 2 ou 3, caractérisée par le fait que la dimension radiale de la section en contre-dépouille (35) est située dans la gamme des dizièmes de millimètres.
  5. Cartouche suivant l'une des revendications 1 à 4, caractérisée par le fait qu'un dispositif d'arrêt est associé à l'embout pour pouvoir au choix obturer et ouvrir l'embout, ce dispositif comportant un organe d'arrêt (60) mobile par rotation entre une position ouverte et une position fermée, que l'organe d'arrêt comprend un disque (64) qui est disposé sur l'embout de la cartouche, transversalement à la direction d'écoulement de la masse, directement devant les ouvertures de sortie (34) de l'embout et est mobile en rotation autour d'un axe parallèle à l'axe longitudinal de la cartouche, et que le disque (64) présente des ouvertures de passage (65) qui, par rotation du disque entre la position ouverte et la position fermée, peuvent être amenées en coïncidence d'avec et hors de coïncidence avec les ouvertures de sortie (34) de l'embout.
  6. Cartouche suivant la revendication 5,
    caractérisée par le fait que la rotation du disque (64) entre la position ouverte et la position fermée est limitée par des surfaces de butée (35, 66) formées sur le disque et sur l'embout (30).
  7. Cartouche suivant la revendication 5 pour une cartouche à deux composants comprenant deux parties de paroi tubulaire de cartouche coaxiales, caractérisée par le fait que l'organe d'arrêt présente la forme d'un cylindre creux ouvert à l'avant, dont le fond est formé par le disque (64) et dont la paroi latérale comporte des moyens de préhension (62) pour l'actionnement de l'organe d'arrêt ainsi qu'une gorge périphérique (63) dans laquelle pénètrent des moyens de retenue (50) pour le guidage du cylindre et pour la retenue de ce dernier sur la pièce de tête (30).
  8. Cartouche suivant la revendication 7,
    caractérisée par le fait que les moyens de retenue sont constitués par un manchon fileté (50) vissé sur un col (31b) de la pièce de tête (30).
  9. Cartouche suivant la revendication 7 ou 8,
    caractérisée par le fait que le cylindre creux (60) ouvert à l'avant est subdivisé par une cloison médiane (61) en deux cylindres partiels et présente, sur sa paroi latérale, un filetage pour le vissage d'une buse mélangeuse.
  10. Cartouche suivant l'une des revendications 6 à 9, caractérisée par le fait que le disque (64) présente deux nez de butée (66) en saillie pénètrant dans deux gorges de guidage (35) qui sont ménagées en creux dans la pièce de tête et dont les extrémités constituent une contre-butée pour les nez de butée (66).
EP92103764A 1991-03-06 1992-03-05 Cartouche pour masses plastiques à composants multiples Expired - Lifetime EP0502519B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9102635U DE9102635U1 (fr) 1991-03-06 1991-03-06
DE9102636U 1991-03-06
DE9102636U DE9102636U1 (fr) 1991-03-06 1991-03-06
DE9102635U 1991-03-06

Publications (3)

Publication Number Publication Date
EP0502519A2 EP0502519A2 (fr) 1992-09-09
EP0502519A3 EP0502519A3 (en) 1992-12-02
EP0502519B1 true EP0502519B1 (fr) 1993-12-01

Family

ID=25957924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103764A Expired - Lifetime EP0502519B1 (fr) 1991-03-06 1992-03-05 Cartouche pour masses plastiques à composants multiples

Country Status (5)

Country Link
US (1) US5301842A (fr)
EP (1) EP0502519B1 (fr)
JP (1) JPH0872945A (fr)
DE (1) DE59200027D1 (fr)
ES (1) ES2049116T3 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110352099A (zh) * 2017-02-02 2019-10-18 诺信公司 双流体筒组件

Also Published As

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JPH0872945A (ja) 1996-03-19
US5301842A (en) 1994-04-12
DE59200027D1 (de) 1994-01-13
EP0502519A2 (fr) 1992-09-09
EP0502519A3 (en) 1992-12-02
ES2049116T3 (es) 1994-04-01

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