EP2271563B1 - Cartridge and piston with ventilation device - Google Patents
Cartridge and piston with ventilation device Download PDFInfo
- Publication number
- EP2271563B1 EP2271563B1 EP09724078.2A EP09724078A EP2271563B1 EP 2271563 B1 EP2271563 B1 EP 2271563B1 EP 09724078 A EP09724078 A EP 09724078A EP 2271563 B1 EP2271563 B1 EP 2271563B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing lip
- piston
- cover plate
- cartridge
- sealing
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title description 5
- 238000007789 sealing Methods 0.000 claims description 120
- 238000013022 venting Methods 0.000 claims description 22
- 230000001154 acute effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims 2
- 239000004743 Polypropylene Substances 0.000 claims 2
- 229920001903 high density polyethylene Polymers 0.000 claims 2
- 239000004700 high-density polyethylene Substances 0.000 claims 2
- 229920001684 low density polyethylene Polymers 0.000 claims 2
- 239000004702 low-density polyethylene Substances 0.000 claims 2
- -1 polyethylene Polymers 0.000 claims 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 235000011837 pasties Nutrition 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
-
- 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
- B05C17/00576—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 characterised by the construction of a piston as pressure exerting means, or of the co-operating container
- B05C17/00579—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 characterised by the construction of a piston as pressure exerting means, or of the co-operating container comprising means for allowing entrapped air to escape to the atmosphere
-
- 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
- B65D2205/00—Venting means
- B65D2205/04—Venting means for venting during the initial insertion of a piston
Definitions
- the present invention relates to a piston for a cartridge with a cylindrical or cylindrical tube-like body which can be inserted into a cartridge and along the cylinder axis in a cartridge is displaced and a corresponding cartridge for receiving and storing liquid, powdery or pasty masses and a system of a corresponding cartridge and a tool for moving the piston in the cartridge
- Cartridges for receiving liquid, pasty or powdery masses have long been known for a variety of applications in the art.
- Examples of these are two-component adhesives, in which the components are stored separately and mixed together during application in order to start appropriate curing processes.
- Such cartridges have different designs, such as so-called.
- Side-by-side forms in which the receiving spaces are arranged side by side, or coaxial cartridges, in which the receiving spaces are coaxially arranged one inside the other.
- a piston is known with a cartridge in which the piston is deformed by engaging a tool in a piston pocket so that air can escape at the side edges.
- the piston has a low stability to achieve the deformability.
- the piston should be simple and easy to manufacture.
- the cartridge or the piston to ensure a secure seal with long Lagerlautbeit. The closing process should be possible effectively and in a simple manner.
- a piston which has a cylindrical or cylindrical tube-like basic body.
- the piston comprises at least one sealing lip which seals against a sealing surface which runs parallel or at least at an acute angle to the cylinder longitudinal axis of the piston or the cartridge.
- the sealing lip is designed so that it closes the cartridge with the piston by means of a at one end face
- the piston vulnerable tool from the sealing surface can be lifted, so that air can escape from the cartridge through the resulting gap.
- the sealing lip which can be actuated by means of a tool that can be attacked by the end face, provides a simple and at the same time very effective venting possibility.
- the sealing lip can be arranged so that it at least partially performs a movement transverse to the cylinder longitudinal axis when lifting from the sealing surface. Contrary to known from the prior art valves that perform a movement usually parallel to the cylinder longitudinal axis of the cartridge, this allows a simple and secure seal after closing the cartridge and a simple operation for venting. The storage stability of the system is thereby improved because the well-known in valve systems problem of leakage of valve pin is avoided during prolonged storage.
- the sealing lip in this case extends in particular at an acute angle to the cylinder longitudinal axis or a component of the piston provided parallel thereto or the sealing lip is arranged accordingly.
- the sealing lip can perform a pivoting movement in the lifting movement, in which the acute angle is reduced accordingly.
- the pivoting movement can be realized by elastic deformation. After removal of the tool, the sealing lip can rest again by an elastic restoring force against the corresponding sealing surface and provide by the elastic restoring force sufficient contact pressure available.
- the tool engages directly on the sealing lip, so that a corresponding movement of the sealing lip from a sealing state to a non-sealing state and vice versa is effected.
- the piston can also be designed so that when closing the receiving space, the resulting air cushion and the associated air pressure lead to deformation of the piston, which favors the formation of a gap for the escape of air, while the concerns of the recorded in the receiving space mass the sealing effect is enhanced.
- This can be effected for example by a corresponding shaping of the sealing lip, for which a non-sealing position is favored by the air flow during closing and the corresponding air cushion in front of the piston, while in the static storage of a recorded in the receiving space mass, the sealing position of the sealing lip is favored.
- the sealing lip can be arranged on the outside of the cylinder or in the case of a cylindrical tube-like basic body, that is to say a base body with a ring structure, on the inner side of the tube or the inner side of the ring, so that the sealing lip can cooperate with a wall of the corresponding receiving space as a sealing surface.
- the corresponding sealing lip can be provided circumferentially.
- this also applies to other cylinder structures with square, rectangular or other polygonal bases.
- the piston may also have a cover plate, which is arranged on the end face of the base body, which is provided in the cartridge in the direction of the receiving space, ie in the direction of the cartridge interior.
- a cover plate may serve to cover the main body of the piston from the mass stored in the receiving space, which may be chemically very reactive.
- the cover plate may be formed of a different material than the body of the piston to have a corresponding resistance to the chemically active material in the receiving space. This makes it possible to select the materials according to the required property profiles for the main body and the cover separately.
- the main body of the piston may be formed of a softer, more elastic material, while the cover plate can be formed of a hard material.
- the cover plate may be formed of polyamide.
- cover plate can also be used to form a venting device, wherein the sealing lip is part of the venting device.
- the cover plate may be formed so that the sealing lip is protected from contact with the mass received in the receiving space, so that when the sealing lip is open no mass can escape through the corresponding gap formed.
- the cover may have a sealing element adjacent to the sealing lip.
- the cover plate may further provide a sealing surface against which seals the sealing lip, for example, if no seal against a wall of the receiving space is possible or desired.
- the cover plate usually has a piston base body-like structure in the form of a cylindrical or cylinder tube-like basic shape, wherein in longitudinal section a U-shaped or U-ring-shaped structure may be formed in which a circumferentially provided in the direction of the cylinder longitudinal leg into a corresponding recess of the body engage and thereby be connected to the body.
- the connection can be produced in that the leg of the cover plate has latching elements which correspond with latching elements of the base body.
- the leg of the cover plate may surround the base body at least on one side, so that the leg comes to rest on the inside of the receiving space. However, the leg preferably engages in a recess in the base body, so that it is spaced from the inside of the receiving space.
- a cover plate which covers substantially the entire cross-section of the receiving space the cartridge covered at least have an air passage opening.
- a plurality of air passage openings may be provided.
- the air passage openings may in particular be provided at a distance from the sealing lip of the base body, so that the air has to travel a distance through at least one air duct between the air passage opening of the cover plate and the sealing lip of the base body during the ventilation. Accordingly, at least one, preferably a plurality of air ducts may be provided between the basic body of the piston and the cover plate, in which the air is guided during the venting.
- Such a measure has the advantage that the air passage opening and / or the air duct can be formed so that although air or other gaseous substances can pass through, but no liquid, pasty or powdery substances, such as the mass taken in the Aukahmeraum is, represents. This is a so-called. Filter section is given, which prevents the recorded mass in the receiving space can escape during contact with the piston. In the closed state, the sealing lip is additionally a protection against the unwanted escape of the mass received in the receiving space.
- the air passage opening may preferably be provided on the outside of the cylindrical or cylinder tube-like basic shape or the tube inside or in the middle of the cover plate, wherein the sealing lip as far as possible from the air passage opening on the tube inside or in the region of the center of the cover plate or on the outside the cylinder or cylinder tube-like basic shape of the piston can be provided.
- the air passage opening may be provided on the outside of the cylindrical or cylinder tube-like basic shape of the cover plate, while the sealing lip may be provided on the piston for generating a vent then at a cylindrical tube-like basic shape on the tube inside or a simple cylindrical basic shape in the region of the center of the cover plate ,
- the cover plate can provide a corresponding sealing surface by means of a sleeve projecting in the direction of the main body or a pipe stub.
- the corresponding venting devices can be formed by a sealing lip on the piston main body or by at least one air passage opening on a cover plate of the piston.
- a venting device may be formed by at least two venting devices and an air duct provided therebetween.
- a tool which actuates the sealing lip during displacement of the piston in the cartridge.
- a tool may be formed by a rod having on one of its end faces a tubular extension for cooperation with a sealing lip.
- Pipe-like extension here means that it may be a circular cylinder tube extension or a cylinder tube extension with a corresponding square, rectangular or other polygonal basic shape, according to the formation of the sealing lip and the corresponding piston.
- the tube extension may be formed as an outer tube extension, in which, in accordance with the diameter of the rod, a continuation takes place in tube form, for example for actuating a provided on the outer circumference of a cylinder-like piston sealing lip. If the sealing lip is arranged in an inner region, the tube extension can also have a smaller diameter than the rest of the rod cross-section.
- the tool may also include a vent channel, which cooperates with the tubular extension, so that a continuous venting channel is formed.
- FIGS. 1 to 3 is shown in longitudinal sections a first embodiment of the invention.
- Longitudinal section here means that the section runs parallel to the cylinder longitudinal axis of the cartridge. Accordingly, the cylinder longitudinal axis is in FIG. 1 shown as a dot-dash line in the middle of the figure.
- FIGS. 1 to 3 show a coaxial cartridge with a cylindrical tube-like or annular receiving space 3 and an inner cylinder-like receiving space 4. Accordingly, two different substances can be stored separately in the receiving spaces 3 and 4.
- the receiving spaces 3 and 4 are limited by a cylindrical outer wall 2 and a cylindrical inner wall 17 which is coaxially received in the cylindrical outer wall 2.
- annular or cylindrical tube-like piston 1 For closing the annular receiving space 3, an annular or cylindrical tube-like piston 1 is provided, which can be inserted by means of a tool 15 into the receiving space 3 to seal the receiving space 3 against a recorded there liquid, pasty or powdery mass.
- the piston 1 has a cylindrical tube-shaped base body with a cylindrical tube outer wall 5, which is connected to an annular disc 6. On the annular disc 6 tubular reinforcing pipe 7 are provided.
- a cover plate 8 is also provided in the form of a ring structure.
- the cover plate 8 is formed of a different material from the base body 1 to have specific properties in terms of resistance to reactive masses in the receiving space 3.
- the cover plate 8 also has a cylindrical tube-like or cylinder-like basic structure, wherein in longitudinal section a U-ring shape is given.
- a U-ring shape is given in addition to the section which is arranged transversely to the cylinder longitudinal axis of the cartridge and comes into surface contact with the arranged in the receiving space 3 mass, the cover plate 8 on the outer and inner circumferential legs 11, of the transverse portion almost perpendicular in the direction protrude the base body 1 and thus the outside of the cartridge.
- the legs 11 engage in recesses 10 in the area on the outside and inside of the main body 1 of the piston 1 a.
- an air passage opening 19 is provided in the region of the leg 11, while on the inside of the cover plate 8, which rests against the cylinder tube wall 17, a sealing element 13 is formed for sealing contact with the cylinder tube wall 17.
- a sealing lip 12 is arranged on one of the reinforcing neck 7 of the main body 1, which also seals against the sealing surface, which is provided by the outside of the cylinder tube wall 17.
- the sealing lip 12 is formed as an obliquely protruding from the reinforcing neck 7, tapered truncated cone portion, which with the reinforcing neck 7, arranged on it is and which runs parallel to the longitudinal axis of the cartridge or cylinder longitudinal axis, includes an acute angle.
- the sealing lip 12 is arranged on the base body 1, that from the inside of the cartridge, so the receiving space 3 facing end, a tool 15 with a cylinder tube extension 16 can come into abutment against the sealing lip 12 and this of the sealing surface of the cylinder tube wall 17 can take off.
- the piston is pushed with the base body 1 and the cover plate 8 by means of the tool 15 into the receiving space 3, the air contained in the receiving space 3 through the air passage opening 19 through the cover plate 8 and through a between the cover plate 8 and the annular disk. 6 provided the base body 1 air duct into the region of the sealing lip 12 and escape there between the outer wall of the cylinder tube wall 17 and the tube extension 16.
- the air passage opening 19 and the air duct between the cover plate 8 and the annular disc 6 is in this case designed so that although air can pass through, but the recorded in the receiving space 3 mass can not pass through the air passage opening 19 and the air duct.
- the cartridge or the receiving space 3 can be closed after filling with the male mass in a simple manner with the piston 1, 8, wherein the air between the piston and the recorded in the receiving space 3 mass simply by the venting device, the through the air passage opening 19, the air duct between the cover plate 8 and washer 6 and the sealing lip 12 is formed, can escape, while the mass is securely received.
- the piston 1, 8 namely the tool 15 is removed again, so that the sealing lip 12 again comes into sealing contact with the outer surface or sealing surface of the cylinder tube wall 17 and thus develops a sealing effect.
- the sealing lip 12 causes a secure seal, since the sealing lip 12 is arranged by the acute-angled arrangement so that escaping mass, the contact pressure of the sealing lip 12th would further strengthen.
- FIG. 2 shows in more detail the embodiment of the sealing lip 12 with the sealing surface 18 which rests against the outer surface or sealing surface of the cylinder tube wall 17.
- the cover plate 8 has a sealing element 13, which also bears against the sealing surface of the cylinder tube wall 17 and prevents the passage of the recorded in the receiving space 3 mass.
- FIG. 3 shows the state of the components described above prior to insertion of the piston 1, 8 in the receiving space 3 of the cartridge, it being understood that on the cylinder tube wall 5 of the main body 1 of the piston also sealing elements 9 and 14 are provided, with respect to the inside and Seal provided there sealing surface of the cylinder outer wall 2 of the cartridge. In order to allow a sufficient contact pressure of the sealing elements 9 and 14, they are slightly protruding from the cylinder tube wall 5 to the outside, so that upon insertion of the piston into the cartridge results in an elastic strain.
- FIGS. 4 to 6 show the piston 20, which closes the receiving space 4, so the inner receiving space of the coaxial cartridge.
- the piston 20 which closes the receiving space 4
- the inner receiving space of the coaxial cartridge so the inner receiving space of the coaxial cartridge.
- such a construction would also be possible for juxtaposed receiving spaces as in side-by-side cartridges.
- the piston 20 is designed without a cover plate, since the inner receiving space is usually provided for the non-reactive substance. Nevertheless, in the case of a reactive substance, a piston with a cover plate can also be provided, as can be seen, for example, in US Pat FIGS. 7 and 9 will be described below.
- FIGS. 4 to 6 show a piston 20 in longitudinal sections along the cylinder longitudinal axis, which is again shown as a dot-dash line.
- the piston 20 has a cylinder tube wall 21 which is connected via an arc with an inner cylinder tube wall 23, so that between the cylinder tube walls 21 and 23 an outwardly open ring pocket 22 is formed, in which a tube extension 28 of a tool 27 can engage.
- the cylinder tube formed by the inner cylinder tube wall 23 is closed by a conical arrangement 25 to the inside of the receiving space 4, wherein a conical-ring-shaped recess 26 is formed for receiving the resulting when closing cone of mass. Overall, this results in the piston in longitudinal section an M-structure.
- a circumferential sealing lip 29 is provided in the region of the end face directed in the direction of the receiving space 4, which cooperates with the inner side or the inner sealing surface of the cylinder tube wall 17 to close the receiving space 4 tightly.
- the annular pocket 22 of the piston 20 is formed so that upon engagement of the tube extension 28 of the piston 20 and the annular pocket 22 and thus the sealing element 29 are deformed so that there is a lifting of the sealing element 29 of the inner sealing surface of the cylinder tube wall 17th comes.
- air which is present in the intermediate space between the mass provided in the receiving space 4 and the piston 20 can escape via the gap between the inside of the cylinder tube wall 17 and the sealing element 29. This is evident in FIG. 5 in a detailed view of the FIG. 4 to recognize.
- the mass accommodated in the receiving space 4 is not a chemically aggressive component, it is not critical if, during closing of the receiving space 4, a small amount of liquid, pasty or pulverulent mass, which is provided in the receiving space 4, passes over the Venting device, which is given by the sealing lip 29, escapes. After closing, when the tool 27 is removed from the annular pocket 22, the sealing lip 29 is, however, with sufficient contact pressure against the inside of the cylinder tube wall 17 to ensure a secure seal of the receiving space 4.
- the conical structure 25, which is connected to the inner cylinder tube wall 23 of the piston 20, contributes, since this exerts a transverse to the cylinder longitudinal axis directed elastic restoring force.
- FIG. 6 shows that the piston 20 with the sealing lips 29 has a larger diameter than the inner diameter of the receiving space 4, as long as the tool 27 is not fully received in the annular pocket 22 and by the inclined surface on the arc, the cylinder tube outer wall 21st and the cylinder tube inner wall 23 of the piston 20 connects, the diameter correspondingly reduced.
- FIGS. 7 and 8 show a further embodiment of a piston 30 according to the invention, which in its embodiment very much of the embodiment in the FIGS. 1 to 3 similar. However, this is not an annular piston structure, but a continuous disc-shaped structure, such as the embodiment of the FIGS. 4 to 6 underlying. However, the embodiment of the FIGS. 7 and 8 also a cover plate 36, which may be made of a different material than what is used to form the piston base structure use.
- the piston base structure again has a cylindrical wall 31 which comprises sealing elements 32 and 33 which seal against the inside of a corresponding boundary wall of a receiving space.
- the cylinder tube wall 31 is connected to a transverse to the cylinder longitudinal axis annular disc 44, to which in turn reinforcing pipe stub 34 are arranged.
- the innermost reinforcing pipe socket 34 has a sealing lip 35 arranged at an acute angle, which, however, does not seal against a wall of a receiving space of a cartridge, but against one or more sealing surfaces provided on a cylinder pipe socket 37 extending from the cover plate 36 in the direction of the main body of the Piston 30 extends.
- the cover plate 36 has a longitudinal section U-shaped basic structure, again with a cylindrical tube-shaped leg 45 is provided which is parallel to the cylinder longitudinal axis and is closed by a transversely arranged to the cylinder longitudinal axis disc.
- the cylindrical tubular leg 45 engages, similar to the embodiment of FIGS. 1 to 3 , in corresponding recesses of the basic structure of the piston 30 a.
- air passage openings 38 In the connecting portion of the leg 45 with the transverse disc are air passage openings 38 in the form of a plurality of individual air passage openings or a provided circumferential through hole.
- the air passage opening is in communication with an air guide channel 40 which is formed between the cover plate 36 and the annular disc 44 of the main body of the piston 30.
- the air duct 40 is formed, for example, in that spacers 39 are provided between the cover plate 36 and the annular disc 44. This air can pass through the air passage opening 38 via the air duct 40 to the sealing lip 35, which seals against the sealing surface of the pipe socket 37 of the cover plate 36.
- the one or more air passage openings 38 and the air duct 40 are formed so that although air can pass through, but the mass received in the corresponding receiving space is largely retained. Even if mass should pass through the air passage opening and the air duct 40, in the sealed state, when the tool 41 is removed, a sealing effect by the sealing lip 35 is given, so that no mass can escape.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Coating Apparatus (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
Die vorliegende Erfindung betrifft einen Kolben für eine Kartusche mit einem zylinder- oder zylinderrohrartigen Grundkörper der in eine Kartusche einsetzbar und entlang der Zylinderlängsachse in einer Kartusche verschiebbar ist sowie eine entsprechende Kartusche zur Aufnahme und Lagerung von flüssigen, pulverförmigen oder pastösen Massen und ein System aus einer entsprechenden Kartusche und einem Werkzeug zum Verschieben des Kolbens in der KartuscheThe present invention relates to a piston for a cartridge with a cylindrical or cylindrical tube-like body which can be inserted into a cartridge and along the cylinder axis in a cartridge is displaced and a corresponding cartridge for receiving and storing liquid, powdery or pasty masses and a system of a corresponding cartridge and a tool for moving the piston in the cartridge
Kartuschen zur Aufnahme von flüssigen, pastösen oder pulvrigen Massen sind seit langem für verschiedenste Einsatzgebiete in der Technik bekannt. Hierbei unterscheidet man Kartuschen, welche lediglich einen einzigen Aufnahmeraum für eine entsprechende Masse aufweisen oder mehrere Aufnahmeräume, um unterschiedliche Komponenten getrennt aufzubewahren und bei der Verarbeitung miteinander zu mischen. Beispiele hierfür sind Zweikomponentenkleber, bei denen die Komponenten getrennt aufbewahrt werden und bei der Applizierung miteinander vermischt werden, um entsprechende Aushärtungsvorgänge zu starten.Cartridges for receiving liquid, pasty or powdery masses have long been known for a variety of applications in the art. In this case, a distinction is made between cartridges which have only a single receiving space for a corresponding mass or a plurality of receiving spaces in order to store different components separately and to mix them with one another during processing. Examples of these are two-component adhesives, in which the components are stored separately and mixed together during application in order to start appropriate curing processes.
Derartige Kartuschen weisen unterschiedliche Bauformen auf, wie beispielsweise sog. Side-by-Side-Formen, bei denen die Aufnahmeräume nebeneinander angeordnet sind, oder Koaxialkartuschen, bei denen die Aufnahmeräume koaxial ineinander angeordnet sind.Such cartridges have different designs, such as so-called. Side-by-side forms in which the receiving spaces are arranged side by side, or coaxial cartridges, in which the receiving spaces are coaxially arranged one inside the other.
Diesen verschiedenen Kartuschen, die für unterschiedlichste Einsatzzwecke verwendet werden können, ist jedoch gemeinsam, dass üblicherweise ein oder mehrere Kolben vorgesehen sind, die entsprechend verschiebbar in den Aufnahmeräumen aufgenommen sind, so dass mittels der Kolben die in den Aufnahmeräumen aufgenommenen Massen über eine Abgabeöffnung ausgegeben werden können. Neben der Befüllung der Aufnahmeräume über die Abgabeöffnungen, wird meist eine Befüllung über das kolbenseitig offene Ende des entsprechenden Aufnahmeraums vorgenommen. Entsprechend wird bei der Befüllung einer Kartusche die Masse an dem kolbenseitigen, offenen Ende des Aufnahmeraums in diesen eingegeben, wobei das offene Ende anschließend mit dem Kolben verschlossen wird. Der Kolben muss hierbei dicht gegen die Wände des Aufnahmeraums aufgenommen werden, um die flüssige, pastöse oder pulverförmige Masse daran zu hindern, den Aufnahmeraum zu verlassen. Dies führt jedoch beim Befüllen und dem erstmaligen Einsetzen des Kolbens zu der Problematik, dass Sorge dafür getragen werden muss, dass in dem Aufnahmeraum befindliche Luft entweichen kann, während der Kolben in Anlage zu der in dem Aufnahmeraum aufgenommenen Masse gebracht wird.These various cartridges that can be used for a variety of applications, however, has in common that usually one or more pistons are provided, which are accommodated correspondingly displaceable in the receiving spaces, so that by means of the pistons, the masses received in the receiving spaces are output via a discharge opening can. In addition to the filling of the receiving spaces on the discharge openings, is usually a filling on the piston side open end of the corresponding Recording room made. Accordingly, when filling a cartridge, the mass at the piston side, open end of the receiving space is entered into this, wherein the open end is then closed with the piston. The piston must in this case be tightly received against the walls of the receiving space to prevent the liquid, pasty or powdery mass from leaving the receiving space. However, this results in the filling and initial insertion of the piston to the problem that care must be taken that air in the receiving space can escape while the piston is brought into abutment with the mass received in the receiving space.
Hierzu sind im Stand der Technik verschiedene Lösungen bekannt, wie sie beispielsweise in dem deutschen Gebrauchsmuster
Diese Lösung nach dem Stand der Technik weist jedoch den Nachteil auf, dass die Kolben durch die Ausbildung der Ventile sehr komplex werden und somit sehr aufwändig in der Herstellung sind. Außerdem sind derartige Ventile störungsanfällig und bei nochmaliger Betätigung kann es zu Leckagen kommen. Darüber hinaus kann der Verschlussvorgang selbst aufwändig sein, wenn neben dem Setzen des Kolbens ein zweiter Vorgang zum Schließen des Ventils bzw. der Ventile notwendig wird. Darüber hinaus besteht ein Nachteil darin, dass beim Verschließen des Aufnahmeraums mittels des Kolbens die darin aufgenommene Masse eine kegelförmige Form annehmen kann, die dazu führt, dass im zentralen Bereich, wo meist die Ventile angeordnet sind, die in dem Aufnahmeraum aufgenommene Masse zuerst auf den Kolben trifft und somit eine vollständige Entlüftung nicht mehr möglich ist.However, this solution according to the prior art has the disadvantage that the pistons are very complex due to the formation of the valves and thus are very expensive to manufacture. In addition, such valves are prone to failure and with repeated actuation may cause leaks. In addition, the closing process itself can be costly if, in addition to the setting of the piston, a second operation for closing the valve or the valves is necessary. Moreover, there is a disadvantage in that when closing the receiving space by means of the piston, the mass taken therein can assume a conical shape, which leads to the fact that in the central area, where usually the valves are arranged, the mass taken in the receiving space first encounters the piston and thus complete ventilation is no longer possible.
Außerdem ist es aus dem oben zitierten Stand der Technik bekamt, Kolben mit Abdeckplatten vorzusehen, die den eigentlichen Kolbenkörper vor dem direkten Kontakt mit möglicherweise chemisch reaktiven Massen zu vermeiden. Derartige Abdeckplatten können entsprechend dem oben zitierten Stand der Technik in entsprechende Entlüftungsvorrichtungen integriert sein.Moreover, it is bekamt from the above-cited prior art to provide pistons with cover plates, which avoid the actual piston body from direct contact with possibly chemically reactive masses. Such cover plates can be integrated according to the above cited prior art in corresponding ventilation devices.
Aus der
Es ist deshalb Aufgabe der vorliegenden Erfindung eine Kartusche bzw. einen zum Verschießen einer Kartusche geeigneten Kolben bereitzustellen sowie ein entsprechendes Werkzeug, mit dem eine sichere, schnelle und effektive Entlüftung einer Kartusche beim Verschließen der Kartusche mit dem Kolben möglich ist. Außerdem soll der Kolben einfach aufgebaut und einfach herstellbar sein. Darüber hinaus soll die Kartusche bzw. der Kolben eine sichere Abdichtung mit langer Lagersicherbeit gewährleisten. Auch der Verschlussvorgang soll effektiv und in einfacher Weise möglich sein.It is therefore an object of the present invention to provide a cartridge or a piston suitable for firing a cartridge and a corresponding tool with which a safe, fast and effective venting of a cartridge when closing the cartridge with the piston is possible. In addition, the piston should be simple and easy to manufacture. In addition, the cartridge or the piston to ensure a secure seal with long Lagersicherbeit. The closing process should be possible effectively and in a simple manner.
Diese Aufgabe wird gelöst durch ein System mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind Gegenstand der abhängigen Ansprüche.This object is achieved by a system having the features of claim 1. Advantageous embodiments are the subject of the dependent claims.
Gemäß der vorliegenden Erfindung wird ein Kolben vorgesehen, welcher einen zylinder- oder zylinderrohrartigen Grundkörper aufweist. Der Kolben umfasst mindestens eine Dichtlippe, die gegen eine Dichtfläche abdichtet, die parallel oder zumindest in einem spitzen Winkel zur Zylinderlängsachse des Kolbens bzw. der Kartusche verläuft. Die Dichtlippe ist so ausgebildet, dass sie beim Verschließen der Kartusche mit dem Kolben mittels eines an einer Stirnseite des Kolbens angreifbaren Werkzeugs von der Dichtfläche abhebbar ist, so dass durch den dadurch entstehenden Spalt Luft aus der Kartusche entweichen kann. Durch die Dichtlippe, die mittels eines von der Stirnseite angreifbaren Werkzeugs betätigbar ist, ist eine einfache und zugleich sehr wirksame Entlüftungsmöglichkeit gegeben.According to the present invention, a piston is provided, which has a cylindrical or cylindrical tube-like basic body. The piston comprises at least one sealing lip which seals against a sealing surface which runs parallel or at least at an acute angle to the cylinder longitudinal axis of the piston or the cartridge. The sealing lip is designed so that it closes the cartridge with the piston by means of a at one end face The piston vulnerable tool from the sealing surface can be lifted, so that air can escape from the cartridge through the resulting gap. The sealing lip, which can be actuated by means of a tool that can be attacked by the end face, provides a simple and at the same time very effective venting possibility.
Die Dichtlippe kann dabei so angeordnet werden, dass sie beim Abheben von der Dichtfläche zumindest teilweise eine Bewegung quer zur Zylinderlängsachse ausführt. Entgegen den aus dem Stand der Technik bekannten Ventilen, die eine Bewegung üblicherweise parallel zur Zylinderlängsachse der Kartusche durchführen, ermöglicht dies eine einfache und sichere Abdichtung nach dem Verschließen der Kartusche sowie eine einfache Betätigung zur Entlüftung. Auch die Lagerstabilität des Systems wird dadurch verbessert, da die bei Ventilsystemen bekannte Problematik der Undichtheit von Ventilzapfen bei längerer Lagerung vermieden wird.The sealing lip can be arranged so that it at least partially performs a movement transverse to the cylinder longitudinal axis when lifting from the sealing surface. Contrary to known from the prior art valves that perform a movement usually parallel to the cylinder longitudinal axis of the cartridge, this allows a simple and secure seal after closing the cartridge and a simple operation for venting. The storage stability of the system is thereby improved because the well-known in valve systems problem of leakage of valve pin is avoided during prolonged storage.
Erfindungsgemäß verläuft die Dichtlippe hierbei insbesondere unter einem spitzen Winkel zur Zylinderlängsachse bzw. einem parallel dazu vorgesehenen Bauteil des Kolbens bzw. ist die Dichtlippe entsprechend angeordnet. Auf diese Weise kann die Dichtlippe bei der Abhebebewegung eine Schwenkbewegung durchführen, bei der der spitze Winkel entsprechend verkleinert wird. Die Schwenkbewegung kann durch elastische Verformung realisiert werden. Nach dem Entfernen des Werkzeugs kann die Dichtlippe durch eine elastische Rückstellkraft wieder gegen die entsprechende Dichtfläche anliegen und durch die elastische Rückstellkraft einen ausreichenden Anpressdruck zur Verfügung stellen.According to the invention, the sealing lip in this case extends in particular at an acute angle to the cylinder longitudinal axis or a component of the piston provided parallel thereto or the sealing lip is arranged accordingly. In this way, the sealing lip can perform a pivoting movement in the lifting movement, in which the acute angle is reduced accordingly. The pivoting movement can be realized by elastic deformation. After removal of the tool, the sealing lip can rest again by an elastic restoring force against the corresponding sealing surface and provide by the elastic restoring force sufficient contact pressure available.
Entsprechend greift das Werkzeug direkt an der Dichtlippe an , so dass eine entsprechende Bewegung der Dichtlippe von einem Dichtzustand in einen Nicht-Dicht-Zustand und umgekehrt bewirkt wird.Accordingly, the tool engages directly on the sealing lip, so that a corresponding movement of the sealing lip from a sealing state to a non-sealing state and vice versa is effected.
Insbesondere kann der Kolben auch so ausgebildet sein, dass beim Verschließen des Aufnahmeraums das entstehende Luftpolster und der damit verbundene Luftdruck zu einer Verformung des Kolbens führen, der die Bildung eines Spaltes für das Entweichen der Luft begünstigt, während beim Anliegen der in dem Aufnahmeraum aufzunehmenden Masse die Dichtwirkung verstärkt wird. Dies kann beispielsweise durch eine entsprechende Formgebung der Dichtlippe bewirkt werden, für welche durch die Luftströmung beim Verschließen und das entsprechende Luftpolster vor dem Kolben eine Nicht-Dichtstellung begünstigt wird, während bei der statischen Lagerung einer im Aufnahmeraum aufgenommenen Masse die Dichtstellung der Dichtlippe begünstigt wird.In particular, the piston can also be designed so that when closing the receiving space, the resulting air cushion and the associated air pressure lead to deformation of the piston, which favors the formation of a gap for the escape of air, while the concerns of the recorded in the receiving space mass the sealing effect is enhanced. This can be effected for example by a corresponding shaping of the sealing lip, for which a non-sealing position is favored by the air flow during closing and the corresponding air cushion in front of the piston, while in the static storage of a recorded in the receiving space mass, the sealing position of the sealing lip is favored.
Die Dichtlippe kann an der Zylinderaußenseite oder bei einem zylinderrohrartigen Grundkörper, also einem Grundkörper mit Ringstruktur, an der Rohrinnenseite bzw. der Ringinnenseite angeordnet sein, so dass die Dichtlippe mit einer Wand des entsprechenden Aufnahmeraums als Dichtfläche zusammenwirken kann. Dadurch kann der gesamte Aufbau der Kartusche und des Kolbens einfach gehalten werden.The sealing lip can be arranged on the outside of the cylinder or in the case of a cylindrical tube-like basic body, that is to say a base body with a ring structure, on the inner side of the tube or the inner side of the ring, so that the sealing lip can cooperate with a wall of the corresponding receiving space as a sealing surface. Thereby, the entire structure of the cartridge and the piston can be kept simple.
Insbesondere kann bei einem Kreiszylinderaufbau oder einem Kreisringzylinder die entsprechende Dichtlippe umlaufend vorgesehen werden. Dies gilt jedoch auch für andere Zylinderstrukturen mit quadratischen, rechteckigen oder sonstigen mehreckigen Grundflächen.In particular, in a circular cylinder assembly or a circular ring cylinder, the corresponding sealing lip can be provided circumferentially. However, this also applies to other cylinder structures with square, rectangular or other polygonal bases.
Der Kolben kann zudem eine Abdeckplatte aufweisen, die an der Stirnseite des Grundkörpers angeordnet ist, die in der Kartusche in Richtung des Aufnahmeraums, also in Richtung des Kartuscheninneren, vorgesehen ist. Eine derartige Abdeckplatte kann dazu dienen, den Grundkörper des Kolbens von der im Aufnahmeraum gelagerten Masse, die chemisch sehr reaktiv sein kann, abzudecken. Entsprechend kann die Abdeckplatte aus einem unterschiedlichen Materials als der Grundkörper des Kolbens gebildet sein, um eine entsprechende Resistenz gegenüber der chemisch aktiven Masse im Aufnahmeraum zu besitzen. Damit ist es möglich, die Materialien entsprechend den geforderten Eigenschaftsproflen für den Grundkörper und die Abdeckplatte gesondert auszuwählen. Beispielsweise kann der Grundkörper des Kolbens aus einem weicheren, elastischeren Material gebildet sein, während die Abdeckplatte aus einem harten Material gebildet sein kann. Vorzugsweise kann die Abdeckplatte aus Polyamid gebildet sein.The piston may also have a cover plate, which is arranged on the end face of the base body, which is provided in the cartridge in the direction of the receiving space, ie in the direction of the cartridge interior. Such a cover plate may serve to cover the main body of the piston from the mass stored in the receiving space, which may be chemically very reactive. Accordingly, the cover plate may be formed of a different material than the body of the piston to have a corresponding resistance to the chemically active material in the receiving space. This makes it possible to select the materials according to the required property profiles for the main body and the cover separately. For example, the main body of the piston may be formed of a softer, more elastic material, while the cover plate can be formed of a hard material. Preferably, the cover plate may be formed of polyamide.
Das Vorsehen der Abdeckplatte kann zudem zur Ausbildung einer Entlüftungsvorrichtung genutzt werden, bei der die Dichtlippe einen Teil der Entlüftungsvorrichtung darstellt. Außerdem kann die Abdeckplatte so ausgebildet sein, dass die Dichtlippe vor dem Kontakt mit der im Aufnahmeraum aufgenommenen Masse geschützt wird, so dass bei geöffneter Dichtlippe keine Masse durch den entsprechend entstehenden Spalt austreten kann. Zu diesem Zweck kann das Abdeckelement ein Dichtelement benachbart zur Dichtlippe aufweisen.The provision of the cover plate can also be used to form a venting device, wherein the sealing lip is part of the venting device. In addition, the cover plate may be formed so that the sealing lip is protected from contact with the mass received in the receiving space, so that when the sealing lip is open no mass can escape through the corresponding gap formed. For this purpose, the cover may have a sealing element adjacent to the sealing lip.
Die Abdeckplatte kann weiterhin eine Dichtfläche bereitstellen, gegenüber der die Dichtlippe abdichtet, wenn beispielsweise keine Abdichtung gegenüber einer Wand des Aufnahmeraums möglich oder gewünscht ist.The cover plate may further provide a sealing surface against which seals the sealing lip, for example, if no seal against a wall of the receiving space is possible or desired.
Die Abdeckplatte weist üblicherweise eine dem Kolbengrundkörper ähnliche Struktur in Form einer zylinder- oder zylinderrohrartigen Grundform auf, wobei im Längsschnitt eine U-oder U-ringförmige Struktur ausgebildet sein kann, bei der ein in Richtung der Zylinderlängsachse umlaufend vorgesehener Schenkel in eine korrespondierende Ausnehmung des Grundkörpers eingreifen und dadurch mit dem Grundkörper verbunden sein kann. Die Verbindung kann hierbei dadurch hergestellt werden, dass der Schenkel der Abdeckplatte Rastelemente aufweist, die mit Rastelementen des Grundkörpers korrespondieren. Der Schenkel der Abdeckplatte kann den Grundkörper zumindest an einer Seite umgreifen, so dass der Schenkel an der Innenseite des Aufnahmeraums zu liegen kommt. Bevorzugt greift der Schenkel jedoch in eine Ausnehmung im Grundkörper ein, so dass er beabstandet von der Innenseite des Aufnahmeraums ist. Insbesondere können an der Außen- und Innenseite unterschiedliche Varianten verwirklicht sein. Statt einem umlaufenden Schenkel an der Abdeckplatte mit einer korrespondierenden Ausnehmung im Kolbengrundkörper kann auch eine umgekehrte Konstruktion gewählt werden oder es können auch mehrere Verbindungsteile für Rast- und Steckverbindungen oder andersartige Verbindungen zwischen Grundkörper und Abdeckplatte vorgesehen sein.The cover plate usually has a piston base body-like structure in the form of a cylindrical or cylinder tube-like basic shape, wherein in longitudinal section a U-shaped or U-ring-shaped structure may be formed in which a circumferentially provided in the direction of the cylinder longitudinal leg into a corresponding recess of the body engage and thereby be connected to the body. In this case, the connection can be produced in that the leg of the cover plate has latching elements which correspond with latching elements of the base body. The leg of the cover plate may surround the base body at least on one side, so that the leg comes to rest on the inside of the receiving space. However, the leg preferably engages in a recess in the base body, so that it is spaced from the inside of the receiving space. In particular, different variants can be realized on the outside and inside. Instead of a circumferential leg on the cover plate with a corresponding recess in the piston body, a reverse construction can be selected or it can also be provided several connecting parts for locking and plug connections or other types of connections between the base body and cover plate.
Um die Entlüftung während des Verschließens des Aufnahmeraums mit dem Kolben zu gewährleisten, kann eine Abdeckplatte, die weitgehend den gesamten Querschnitt des Aufnahmeraums der Kartusche überdeckt mindestens eine Luftdurchgangsöffnung aufweisen. Vorzugsweise kann auch eine Vielzahl von Luftdurchgangsöffnungen vorgesehen sein.In order to ensure the venting during the closing of the receiving space with the piston, a cover plate, which covers substantially the entire cross-section of the receiving space the cartridge covered at least have an air passage opening. Preferably, a plurality of air passage openings may be provided.
Die Luftdurchgangsöffnungen können insbesondere beabstandet zu der Dichtlippe des Grundkörpers vorgesehen sein, so dass die Luft eine Wegstrecke durch mindestens einen Luftführungskanal zwischen Luftdurchgangsöffnung der Abdeckplatte und Dichtlippe des Grundkörpers während der Entlüftung zurücklegen muss. Entsprechend können zwischen dem Grundköper des Kolbens und der Abdeckplatte mindestens ein, vorzugsweise mehrere Luftführungskanäle vorgesehen sein, in denen die Luft während der Entlüftung geführt wird. Eine derartige Maßnahme hat den Vorteil, dass die Luftdurchgangsöffnung und/oder der Luftführungskanal so ausgebildet werden können, dass zwar Luft oder andere gasförmige Stoffe hindurch treten können, jedoch keine flüssigen, pastösen oder pulverförmigen Stoffe, wie sie die Masse, die in dem Aukahmeraum aufgenommen ist, darstellt. Damit ist eine sog. Filterstrecke gegeben, die verhindert, dass die im Aufnahmeraum aufgenommene Masse beim Kontakt mit dem Kolben austreten kann. Im verschlossenen Zustand ist dann zusätzlich die Dichtlippe ein Schutz gegen das ungewollte Austreten der im Aufnahmeraum aufgenommenen Masse.The air passage openings may in particular be provided at a distance from the sealing lip of the base body, so that the air has to travel a distance through at least one air duct between the air passage opening of the cover plate and the sealing lip of the base body during the ventilation. Accordingly, at least one, preferably a plurality of air ducts may be provided between the basic body of the piston and the cover plate, in which the air is guided during the venting. Such a measure has the advantage that the air passage opening and / or the air duct can be formed so that although air or other gaseous substances can pass through, but no liquid, pasty or powdery substances, such as the mass taken in the Aukahmeraum is, represents. This is a so-called. Filter section is given, which prevents the recorded mass in the receiving space can escape during contact with the piston. In the closed state, the sealing lip is additionally a protection against the unwanted escape of the mass received in the receiving space.
Die Luftdurchgangsöffnung kann vorzugsweise an der Außenseite der zylinder- oder zylinderrohrartigen Grundform bzw. der Rohrinnenseite oder in der Mitte der Abdeckplatte vorgesehen sein, wobei entsprechend die Dichtlippe möglichst weit entfernt von der Luftdurchgangsöffnung an der Rohrinnenseite oder im Bereich der Mitte der Abdeckplatte oder an der Außenseite der zylinder- oder zylinderrohrartigen Grundform des Kolbens vorgesehen sein kann. Dadurch wird gewährleistet, dass der Luftführungskanal eine bestimmte Mindestlänge aufweist, die zum Zurückhalten der im Aufnahmeraum aufgenommenen Masse dient. Beispielsweise kann die Luftdurchgangsöffnung an der Außenseite der zylinder- oder zylinderrohrartigen Grundform der Abdeckplatte vorgesehen sein, während die Dichtlippe zur Erzeugung einer Entlüftungsöffnung dann bei einer zylinderrohrartigen Grundform an der Rohrinnenseite oder bei einer einfachen zylinderartigen Grundform im Bereich der Mitte der Abdeckplatte am Kolben vorgesehen sein kann.The air passage opening may preferably be provided on the outside of the cylindrical or cylinder tube-like basic shape or the tube inside or in the middle of the cover plate, wherein the sealing lip as far as possible from the air passage opening on the tube inside or in the region of the center of the cover plate or on the outside the cylinder or cylinder tube-like basic shape of the piston can be provided. This ensures that the air duct has a certain minimum length, which serves to retain the mass received in the receiving space. For example, the air passage opening may be provided on the outside of the cylindrical or cylinder tube-like basic shape of the cover plate, while the sealing lip may be provided on the piston for generating a vent then at a cylindrical tube-like basic shape on the tube inside or a simple cylindrical basic shape in the region of the center of the cover plate ,
Sofern die Dichtlippe des Kolbengrundkörpers im zentralen Bereich des Grundkörpers vorgesehen ist, kann die Abdeckplatte eine entsprechende Dichtfläche durch eine in Richtung des Grundkörpers hervorstehende Hülse oder einen Rohrstutzen bereitstellen. Durch die vorzugsweise Bereitstellung einer Luftdurchgangsöffnung im Außenbereich der Abdeckplatte wird gewährleistet, dass bei der Kegelbildung der Masse während des Schließvorgangs die im Außenbereich oder Randbereich des Aufnahmeraums vorliegende Luft vollständig entfernt werden kann. Entsprechend ist es gemäß der vorliegenden Erfindung nach einem weiteren Aspekt, für den selbständig und in Kombination mit anderen Aspekten der Erfindung Schutz begehrt wird, wesentlich, dass mindestens eine Entlüftungseinrichtung an der Außenseite eines zylinder- oder zylinderrohrartigen Kolbens oder an der Innenseite eines zylinderrohrartigen Kolbens vorgesehen ist. Damit kann die vollständige Entlüftung der Kartusche auch bei einer Kegelbildung der darin aufgenommenen Masse ermöglicht werden. Die entsprechenden Entlüftungseinrichtungen können durch eine Dichtlippe am Kolbengrundkörper oder durch mindestens eine Luftdurchgangsöffnung an einer Abdeckplatte des Kolbens gebildet sein.If the sealing lip of the piston main body is provided in the central region of the base body, the cover plate can provide a corresponding sealing surface by means of a sleeve projecting in the direction of the main body or a pipe stub. By the preferred Provision of an air passage opening in the outer region of the cover plate ensures that during the conical formation of the mass during the closing process, the air present in the outer region or edge region of the receiving space can be completely removed. Accordingly, according to another aspect of the present invention, for which protection is desired independently and in combination with other aspects of the invention, it is essential that at least one venting device be provided on the outside of a cylinder or cylinder tube type piston or on the inside of a cylinder tube type piston has. Thus, the complete venting of the cartridge can be made possible even with a conical shape of the mass absorbed therein. The corresponding venting devices can be formed by a sealing lip on the piston main body or by at least one air passage opening on a cover plate of the piston.
Eine Entlüftungsvorrichtung kann durch mindestens zwei Entlüftungseinrichtungen und einen dazwischen vorgesehenen Luftführungskanal gebildet werden.A venting device may be formed by at least two venting devices and an air duct provided therebetween.
Um eine entsprechende Kartusche mit einem Kolben verschließen zu können, bei dem die Entlüftungsvorrichtung gleichzeitig mit dem Schließvorgang betätigt werden kann, ist erfindungsgemäß ein Werkzeug vorgesehen, welches beim Verschieben des Kolbens in der Kartusche die Dichtlippe betätigt. Ein derartiges Werkzeug kann durch einen Stab gebildet sein, der an einer seiner Stirnseiten einen rohrartigen Fortsatz zum Zusammenwirken mit einer Dichtlippe aufweist.To be able to close a corresponding cartridge with a piston in which the ventilation device can be actuated simultaneously with the closing operation, a tool is provided according to the invention, which actuates the sealing lip during displacement of the piston in the cartridge. Such a tool may be formed by a rod having on one of its end faces a tubular extension for cooperation with a sealing lip.
Rohrartiger Fortsatz bedeutet hierbei, dass es sich um einen Kreiszylinderrohrfortsatz oder um einen Zylinderrohrfortsatz mit entsprechender quadratischer, rechteckiger oder sonstiger mehreckiger Grundform handeln kann, entsprechend der Ausbildung der Dichtlippe und des entsprechenden Kolbens. Der Rohrfortsatz kann als äußerer Rohrfortsatz ausgebildet sein, bei welchem entsprechend dem Durchmesser des Stabes eine Fortsetzung in Rohrform erfolgt, beispielsweise zur Betätigung einer am äußeren Umfang eines zylinderartigen Kolbens vorgesehenen Dichtlippe. Sofern die Dichtlippe in einem inneren Bereich angeordnet ist, kann der Rohrfortsatz auch einen geringeren Durchmesser als der übrige Stabquerschnitt aufweisen.Pipe-like extension here means that it may be a circular cylinder tube extension or a cylinder tube extension with a corresponding square, rectangular or other polygonal basic shape, according to the formation of the sealing lip and the corresponding piston. The tube extension may be formed as an outer tube extension, in which, in accordance with the diameter of the rod, a continuation takes place in tube form, for example for actuating a provided on the outer circumference of a cylinder-like piston sealing lip. If the sealing lip is arranged in an inner region, the tube extension can also have a smaller diameter than the rest of the rod cross-section.
Insbesondere kann das Werkzeug auch einen Entlüftungskanal umfassen, der mit dem rohrartigen Fortsatz zusammenwirkt, so dass ein durchgehender Entlüftungskanal gebildet ist.In particular, the tool may also include a vent channel, which cooperates with the tubular extension, so that a continuous venting channel is formed.
Weitere Vorteile, Kennzeichen und Merkmale der vorliegenden Erfindung werden bei der nachfolgenden detaillierten Beschreibung von Ausführungsbeispielen anhand der beigefügten Zeichnungen deutlich. Die Zeichnungen zeigen hierbei in rein schematischer Form in
- Figur 1
- einen Längsschnitt durch einen Teil einer erfindungsgemäßen Kartusche mit einem Verschlusskolben und einem Einführungswerkzeug;
Figur 2- eine Detailansicht der Schnittansicht aus
Figur 1 ; Figur 3- eine Schnittansicht gemäß
Figur 1 im Zustand vor dem Einführen des Kolbens; Figur 4- einen Längsschnitt durch den inneren Aufnahmeraum einer Koaxialkartusche mit einem entsprechenden Verschlusskolben und einem Einführungswerkzeug;
Figur 5- eine Detailansicht der Schnittansicht aus
Figur 4 ; Figur 6- eine Schnittansicht gemäß
Figur 4 in einem Zustand vor dem Einführen des Kolbens; - Figur 7
- einen Längsschnitt durch eine weitere Ausführungsform eines erfindungsgemäßen Kolbens mit einem Einführwerkzeug; und in
Figur 8- einen Längsschnitt gemäß
Figur 7 , bei dem das Werkzeug die Entlüftungsvorrichtung geöffnet hat.
- FIG. 1
- a longitudinal section through part of a cartridge according to the invention with a closure piston and an insertion tool;
- FIG. 2
- a detailed view of the sectional view
FIG. 1 ; - FIG. 3
- a sectional view according to
FIG. 1 in the state before insertion of the piston; - FIG. 4
- a longitudinal section through the inner receiving space of a coaxial cartridge with a corresponding closure piston and an insertion tool;
- FIG. 5
- a detailed view of the sectional view
FIG. 4 ; - FIG. 6
- a sectional view according to
FIG. 4 in a state prior to insertion of the piston; - FIG. 7
- a longitudinal section through a further embodiment of a piston according to the invention with an insertion tool; and in
- FIG. 8
- a longitudinal section according to
FIG. 7 in which the tool has opened the venting device.
In den
Die
Zum Verschließen des ringförmigen Aufnahmeraums 3 ist ein ringförmiger bzw. zylinderrohrartiger Kolben 1 vorgesehen, der mittels eines Werkzeugs 15 in den Aufnahmeraum 3 eingeschoben werden kann, um den Aufnahmeraum 3 gegen eine dort aufgenommene flüssige, pastöse oder pulverförmige Masse dichtend abzuschließen.For closing the
Der Kolben 1 weist einen zylinderrohrförmigen Grundkörper mit einer Zylinderrohraußenwand 5 auf, welche mit einer Ringscheibe 6 verbunden ist. An der Ringscheibe 6 sind rohrförmige Verstärkungsstutzen 7 vorgesehen.The piston 1 has a cylindrical tube-shaped base body with a cylindrical tube
An der der Kartuscheninnenseite, also der dem Aufnahmeraum 3 zugewandten Stirnseite des Kolbens 1, d.h. an der Ringscheibe 6, ist eine Abdeckplatte 8 ebenfalls in Form einer Ringstruktur vorgesehen. Die Abdeckplatte 8 ist aus einem gegenüber dem Grundkörper 1 unterschiedlichen Material gebildet, um spezifische Eigenschaften hinsichtlich der Beständigkeit gegenüber reaktiven Massen im Aufnahmeraum 3 aufzuweisen.At the inside of the cartridge, that is, the end face of the piston 1 facing the receiving
Die Abdeckplatte 8 weist ebenfalls eine zylinderrohrartige bzw. zylinderartige Grundstruktur auf, wobei im Längsschnitt eine U-Ringform gegeben ist. Neben dem Abschnitt, der quer zur Zylinderlängsachse der Kartusche angeordnet ist und in flächigen Kontakt mit der im Aufnahmeraum 3 angeordneten Masse gelangt, weist die Abdeckplatte 8 an der Außen- und Innenseite umlaufende Schenkel 11 auf, die von dem quer verlaufenden Abschnitt nahezu senkrecht in Richtung des Grundkörpers 1 und somit der Außenseite der Kartusche hervorstehen. Die Schenkel 11 greifen hierbei in Ausnehmungen 10 im Bereich an der Außen- und Innenseite des Grundkörpers 1 des Kolbens 1 ein.The
An der Außenseite der Abdeckplatte ist im Bereich des Schenkels 11 eine Luftdurchgangsöffnung 19 vorgesehen, während an der Innenseite der Abdeckplatte 8, welche an der Zylinderrohrwand 17 anliegt, ein Dichtelement 13 zur dichten Anlage an die Zylinderrohrwand 17 ausgebildet ist.On the outside of the cover plate, an
Unterhalb des Dichtelements 13 der Abdeckplatte 8 ist an einem der Verstärkungsstutzen 7 des Grundkörpers 1 eine Dichtlippe 12 angeordnet, die ebenfalls gegenüber der Dichtfläche, die durch die Außenseite der Zylinderrohrwand 17 bereitgestellt wird, abdichtet. Die Dichtlippe 12 ist als ein schräg von dem Verstärkungsstutzen 7 hervorstehendes, sich verjüngendes Kegelstumpfteil ausgebildet, welches mit dem Verstärkungsstutzen 7, an dem es angeordnet ist und welcher parallel zur Kartuschenlängsachse bzw. Zylinderlängsachse verläuft, einen spitzen Winkel einschließt.Below the sealing
Wie in der
Wird also der Kolben mit dem Grundkörper 1 und der Abdeckplatte 8 mittels des Werkzeugs 15 in den Aufnahmeraum 3 geschoben, so kann die in dem Aufnahmeraum 3 enthaltene Luft durch die Luftdurchgangsöffnung 19 durch die Abdeckplatte 8 sowie durch einen zwischen der Abdeckplatte 8 und der Ringscheibe 6 des Grundkörpers 1 vorgesehenen Luftführungskanal bis in den Bereich der Dichtlippe 12 gelangen und dort zwischen der Außenwand der Zylinderrohrwand 17 und dem Rohrfortsatz 16 entweichen. Die Luftdurchgangsöffnung 19 und der Luftführungskanal zwischen der Abdeckplatte 8 und der Ringscheibe 6 ist hierbei so ausgebildet, dass zwar Luft hindurch treten kann, aber die im Aufnahmeraum 3 aufgenommene Masse nicht durch die Luftdurchgangsöffnung 19 und den Luftführungskanal hindurch treten kann. Auf diese Weise kann die Kartusche bzw. der Aufnahmeraum 3 nach dem Befüllen mit der aufzunehmenden Masse in einfacher Weise mit dem Kolben 1, 8 verschlossen werden, wobei die Luft zwischen dem Kolben und der in dem Aufnahmeraum 3 aufgenommenen Masse einfach durch die Entlüftungsvorrichtung, die durch die Luftdurchgangsöffnung 19, den Luftführungskanal zwischen Abdeckplatte 8 und Ringscheibe 6 sowie die Dichtlippe 12 gebildet ist, entweichen kann, während die Masse sicher aufgenommen ist. Nach dem Verschließen mit dem Kolben 1, 8 wird nämlich das Werkzeug 15 wieder entfernt, so dass die Dichtlippe 12 wieder in dichtende Anlage an die Außenfläche bzw. Dichtfläche der Zylinderrohrwand 17 gelangt und somit eine dichtende Wirkung entfaltet. Selbst wenn von der in dem Aufnahmeraum 3 aufgenommenen Masse geringfügige Mengen durch die Luftdurchgangsöffnung 19 und den Transportkanal gelangen könnten, bewirkt die Dichtlippe 12 eine sichere Abdichtung, da die Dichtlippe 12 durch die spitzwinklige Anordnung so angeordnet ist, dass austretende Masse den Anpressdruck der Dichtlippe 12 weiter verstärken würde.Thus, if the piston is pushed with the base body 1 and the
Die
Um zu vermeiden, dass die in dem Aufnahmeraum 3 aufgenommene Masse während der Entlüftung, bei der die Dichtlippe 12 durch das Werkzeug 15 bzw. den Rohrfortsatz 16 aus der Dichtposition abgehoben ist, durch den gebildeten Spalt den Aufnahmeraum verlässt, weist die Abdeckplatte 8 ein Dichtelement 13 auf, welches ebenfalls an der Dichtfläche der Zylinderrohrwand 17 anliegt und den Durchtritt von der in dem Aufnahmeraum 3 aufgenommenen Masse verhindert.In order to avoid that the mass received in the receiving
Die
Die
Da bei Koaxialkartuschen üblicherweise in einem der Aufnahmeräume eine reaktive Substanz und in dem anderen Aufnahmeraum eine nicht reaktive Substanz vorgesehen ist, ist der Kolben 20 ohne Abdeckplatte ausgeführt, da der innere Aufnahmeraum üblicherweise für die nicht reaktive Substanz vorgesehen ist. Gleichwohl kann bei einer reaktiven Substanz auch ein Kolben mit Abdeckplatte vorgesehen werden, wie er beispielsweise in den
Die
Das durch die innere Zylinderrohrwand 23 gebildete Zylinderrohr ist über eine Kegelanordnung 25 zur Innenseite des Aufnahmeraums 4 verschlossen, wobei eine kegelringförmige Vertiefung 26 zur Aufnahme des sich beim Verschließen ergebenden Massekegels ausgebildet ist. Insgesamt ergibt sich somit für den Kolben im Längsschnitt eine M-Struktur.The cylinder tube formed by the inner
An der Zylinderrohraußenwand 21 ist im Bereich der in Richtung des Aufnahmeraums 4 gerichteten Stirnseite eine umlaufende Dichtlippe 29 vorgesehen, die mit der Innenseite bzw. der inneren Dichtfläche der Zylinderrohrwand 17 zusammenwirkt, um den Aufnahmeraum 4 dicht zu verschließen.On the cylinder tube
Die ringförmige Tasche 22 des Kolbens 20 ist so ausgebildet, dass beim Eingreifen des Rohrfortsatzes 28 der Kolben 20 bzw. die ringförmige Tasche 22 und damit das Dichtelement 29 so verformt werden, dass es zu einem Abheben des Dichtelements 29 von der inneren Dichtfläche der Zylinderrohrwand 17 kommt. Dadurch kann Luft, die in dem Zwischenraum zwischen der in dem Aufnahmeraum 4 vorgesehenen Masse und dem Kolben 20 vorliegt, über den Spalt zwischen der Innenseite der Zylinderrohrwand 17 und dem Dichtelement 29 entweichen. Dies ist deutlich in
Die
Die
Die Kolbengrundstruktur weist wieder eine zylinderrohrförmige Wand 31 auf, welche Dichtelemente 32 und 33 umfasst, die gegenüber der Innenseite einer entsprechenden Begrenzungswand eines Aufnahmeraums abdichten. Die Zylinderrohrwand 31 ist mit einer quer zur Zylinderlängsachse verlaufenden Ringscheibe 44 verbunden, an welcher wiederum Verstärkungsrohrstutzen 34 angeordnet sind.The piston base structure again has a
Ähnlich der Ausführungsform der
Die Abdeckplatte 36 weist eine im Längsschnitt U-förmige Grundstruktur auf, wobei wiederum ein zylinderrohrförmiger Schenkel 45 vorgesehen ist, der parallel zur Zylinderlängsachse verläuft und durch eine quer zur Zylinderlängsachse angeordnete Scheibe verschlossen ist. Der zylinderrohrförmige Schenkel 45 greift, ähnlich dem Ausführungsbeispiel der
Im Verbindungsbereich des Schenkels 45 mit der quer verlaufenden Scheibe sind Luftdurchgangsöffnungen 38 in Form einer Vielzahl von einzelnen Luftdurchgangsöffnungen oder einer umlaufenden Durchgangsöffnung vorgesehen. Die Luftdurchgangsöffnung steht in Verbindung mit einem Luftführungskanal 40, der zwischen der Abdeckplatte 36 und der ringförmigen Scheibe 44 des Grundkörpers des Kolbens 30 ausgebildet ist. Der Luftführungskanal 40 ist beispielsweise dadurch gebildet, dass Abstandshalter 39 zwischen der Abdeckplatte 36 und der ringförmigen Scheibe 44 vorgesehen sind. Damit kann Luft durch die Luftdurchgangsöffnung 38 über den Luftführungskanal 40 bis zur Dichtlippe 35 gelangen, die gegen die Dichtfläche des Rohrstutzens 37 der Abdeckplatte 36 abdichtet.In the connecting portion of the
Sofern das Werkzeug 41 mit seinem Rohrfortsatz 43 von der der Kartusche gegenüberliegenden Stirnseite des Kolbens 30 eingreift, wird die Dichtlippe 35 von der Dichtfläche des Rohrstutzens 37 der Abdeckplatte 36 abgehoben und Luft kann über die Entlüftungsvorrichtung, die durch die Luftdurchgangsöffnung 38, den Luftführungskanal 40 und die Dichtlippe 35 gebildet sind, entweichen. Um ein sicheres Entweichen der Luft zu gewährleisten, ist in dem Werkzeug 41 ein Entlüftungskanal 42 vorgesehen, der mit dem Rohrfortsatz 43 in Verbindung steht. Der Zustand, in dem eine Entlüftung möglich ist, ist in
Ähnlich der Ausfißnmgsform der
Obwohl die vorliegende, Erfindung anhand der beigefügten Ausführungsbeispiele detailliert beschrieben worden ist, ist für den Fachmann klar ersichtlich, dass die Erfindung nicht auf diese Ausführungsbeispiele beschränkt ist, sondern dass vielmehr Abwandlungen und Modifikationen möglich sind, insbesondere in Form von unterschiedlichen Kombinationen einzelner Merkmale oder Weglassen einzelner Merkmale.Although the present invention has been described in detail with reference to the accompanying embodiments, it will be apparent to those skilled in the art that the invention is not limited to these embodiments, but rather variations and modifications are possible, particularly in the form of different combinations of particular features or omissions individual characteristics.
Claims (11)
- System made up of a cartridge with a piston and a tool for displacing the piston in the cartridge, wherein the piston comprises a cylindrical or cylindrical tube-like base member that can be inserted into the cartridge and displaced along the cylindrical longitudinal axis inside the cartridge, wherein at least one sealing lip (12, 35) is provided that seals against a sealing surface running parallel with or at an acute angle to the cylindrical longitudinal axis, wherein the sealing lip (12, 35) is arranged such that, when the cartridge is closed by the piston, the sealing lip can be lifted from the sealing surface by means of a tool (15, 41) which can be acted upon from one end face of the piston, such that air can escape from the cartridge and wherein the sealing lip (12, 29, 35) is arranged at an acute angle to the cylindrical longitudinal axis and the acute angle is reduced during the lifting movement and the sealing lip (12, 29, 35) is formed such that the tool can directly act on the sealing lip and actuates the sealing lip.
- System in accordance with claim 1,
characterised by the fact that
the sealing lip (12, 35) is configured such that, as it is being lifted from the sealing surface, it executes, at least partially, a movement transverse to the cylindrical longitudinal axis and/or air pressure built up in the chamber during closing promotes a movement of the sealing lip into a non-sealing position, while the sealing effect is enhanced by contact of the compound accommodated in the chamber. - System in accordance with any of the previous claims,
characterised by the fact that
the piston is formed such that the air pressure built up during closing leads to deformation of the piston, such that the sealing lip is moved by the deformation towards a non-sealing position. - System in accordance with any of the previous claims,
characterised by the fact that
the sealing lip (12) in the case of a cylindrical tube-like base member is arranged at the tube inner side, especially around the circumference at the tube inner side. - System in accordance with any of the previous claims,
characterised by the fact that
the piston has at least one cover plate (8, 36) at the end face facing the cartridge interior and/or a cover plate (8, 36) is formed from a material different from that of the base member. - System in accordance with any of the previous claims,
characterised by the fact that
at least one cover plate (8) is provided at the end face facing the cartridge interior, said cover plate having a sealing element (13) adjacent to the sealing lip to protect the sealing lip from the cartridge contents. - System in accordance with any of the previous claims,
characterised by the fact that
the sealing lip (35) is in contact with a sealing surface of a cover plate (36) provided at the end face facing the cartridge interior and/or, in a central region of a provided cover plate (36), a sleeve (37) with a sealing surface projects towards the base member. - System in accordance with any of claims 6 to 7,
characterised by the fact that
the cover plate (8, 36) has in its longitudinal cross-section a cylinder-like or cylindrical tube-like base member with a U-shaped or U-ring-shaped structure, wherein the shanks pointing towards the cylindrical longitudinal axis engage with recesses of the base member and/or the cover plate has at least one air passage opening (19, 38). - System in accordance with claim 8,
characterised by the fact that
the air passage opening (19, 38) is provided at a distance from the sealing lip and/or between sealing lip and air passage opening is provided at least one air duct (40) between base member and cover plate and/or the air passage opening is provided at the outer side of the cylinder-like or cylindrical tube-like base member or the tube inner side or in the centre of the cover plate, wherein the sealing lip is correspondingly arranged as far away as possible at the tube inner side or in the region of the centre of the cover plate or the outer side of the cylinder-like or cylindrical tube-like base member. - System in accordance with any of the previous claims,
characterised by the fact that
the base member is made of polyethylene PE; low density polyethylene, LDPE; high density polyethylene, HDPE; or polypropylene PP and/or a provided cover plate (8, 36) is made of polyamide. - System in accordance with any of the previous claims,
characterised by the fact that
the tool comprises a rod having at one end face an inner tubular extension for cooperating with a sealing lip and/or wherein the tool has a venting duct that is effectively connected to a tubular-like extension.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09724078T PL2271563T3 (en) | 2008-03-26 | 2009-03-26 | Cartridge and piston with ventilation device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008000841.9A DE102008000841B8 (en) | 2008-03-26 | 2008-03-26 | Cartridge and piston with venting device |
PCT/EP2009/053627 WO2009118395A1 (en) | 2008-03-26 | 2009-03-26 | Cartridge and piston with ventilation device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2271563A1 EP2271563A1 (en) | 2011-01-12 |
EP2271563B1 true EP2271563B1 (en) | 2014-02-12 |
Family
ID=40799219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09724078.2A Active EP2271563B1 (en) | 2008-03-26 | 2009-03-26 | Cartridge and piston with ventilation device |
Country Status (7)
Country | Link |
---|---|
US (1) | US8678246B2 (en) |
EP (1) | EP2271563B1 (en) |
DE (1) | DE102008000841B8 (en) |
ES (1) | ES2459044T3 (en) |
PL (1) | PL2271563T3 (en) |
RU (1) | RU2517553C2 (en) |
WO (1) | WO2009118395A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US9309042B2 (en) * | 2013-06-14 | 2016-04-12 | Nordson Corporation | Liquid dispensing syringe and method for reducing piston bounce |
EP2873465A1 (en) | 2013-11-18 | 2015-05-20 | Sulzer Mixpac AG | Piston for delivering a fluid component from a cartridge. |
EP2987560A1 (en) * | 2014-08-21 | 2016-02-24 | Sulzer Mixpac AG | Apparatus for dispensing a medium and method for front filing the apparatus |
EP2998030A1 (en) * | 2014-09-17 | 2016-03-23 | Sulzer Mixpac AG | Piston for a cartridge, cartridge and method of venting a cartridge |
DE202016006508U1 (en) * | 2016-10-21 | 2017-01-09 | Ritter Gmbh | Cartridge piston with bleeder valve |
WO2019121399A1 (en) * | 2017-12-20 | 2019-06-27 | Sulzer Mixpac Ag | Piston, cartridge and method of venting a cartridge |
US10968031B2 (en) | 2017-12-27 | 2021-04-06 | Sulzer Mixpac Ag | Piston for a collapsible cartridge |
EP3632575A1 (en) | 2018-10-02 | 2020-04-08 | Sulzer Mixpac AG | Reusable cartridge piston |
US20230135747A1 (en) * | 2021-10-28 | 2023-05-04 | Droplette Inc. | Fluid delivery system |
KR20230149108A (en) * | 2022-04-19 | 2023-10-26 | ì •í›ˆ | Gasket for an impression material cartridge with an air vent hole formed therein |
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US2992052A (en) * | 1959-12-09 | 1961-07-11 | John Charles R De | Self sealing piston |
US3901416A (en) * | 1971-08-26 | 1975-08-26 | Robert S Schultz | Top-loaded pressure operated container for dispensing viscous products |
EP0344491B1 (en) * | 1988-06-03 | 1992-12-23 | Wilhelm A. Keller | Dispensing cartridge with a supply cylinder and an expulsion piston |
DE59103399D1 (en) * | 1990-06-21 | 1994-12-08 | Wilhelm A Keller | Discharge cartridge with storage cylinder and delivery piston. |
EP0497739B1 (en) | 1991-01-29 | 1996-10-09 | Wilhelm A. Keller | Dispensing cartridge with a supply cylinder and an expulsion piston |
DE9110529U1 (en) * | 1991-08-26 | 1991-10-10 | Prestele, Eugen, 8900 Augsburg | cartridge |
DE29506800U1 (en) | 1995-04-21 | 1996-08-29 | Prestele, Eugen, 86161 Augsburg | Venting device |
DE69736448T2 (en) * | 1996-12-24 | 2007-01-04 | Mixpac Systems Ag | Thin-walled packaging for use in a cartridge |
NL1007591C2 (en) * | 1997-11-20 | 1999-05-25 | Raytec Bv | Piston for a cartridge. |
AU2968999A (en) * | 1998-03-19 | 1999-10-11 | Hugo Nilsson | Cap for a cartridge and method and tool for affecting said cap |
DE20001438U1 (en) * | 2000-01-28 | 2001-06-13 | Prestele Eugen | Cartridge piston |
DE20010417U1 (en) | 2000-06-09 | 2001-10-11 | Sulzer Chemtech Ag Winterthur | Bleeding device for a piston for a cartridge |
US6809254B2 (en) | 2001-07-20 | 2004-10-26 | Parker-Hannifin Corporation | Electronics enclosure having an interior EMI shielding and cosmetic coating |
WO2003050012A1 (en) | 2001-12-10 | 2003-06-19 | Tah Industries, Inc. | Dispensing cartridge with tortuous vent path |
US20050029306A1 (en) * | 2002-12-06 | 2005-02-10 | Brennan Robert Charles | Dispensing cartridge with tortuous vent path |
GB0302536D0 (en) * | 2003-02-04 | 2003-03-12 | Bespak Plc | Container |
DE10342090B4 (en) * | 2003-09-10 | 2007-06-06 | Heraeus Kulzer Gmbh | Closure plunger for cartridges with venting and barrier properties |
DE10342091A1 (en) | 2003-09-10 | 2005-04-28 | Heraeus Kulzer Gmbh | Cartridge with ventable piston |
US6899254B1 (en) | 2004-01-20 | 2005-05-31 | Plas-Pak Industries, Inc. | Venting seal for dispenser |
US7621428B2 (en) | 2005-07-01 | 2009-11-24 | Nordson Corporation | Dispensing cartridge with vented piston |
DE202006015313U1 (en) * | 2006-10-06 | 2008-02-21 | Sulzer Chemtech Ag | cartridge plunger |
-
2008
- 2008-03-26 DE DE102008000841.9A patent/DE102008000841B8/en active Active
-
2009
- 2009-03-26 US US12/934,825 patent/US8678246B2/en active Active
- 2009-03-26 EP EP09724078.2A patent/EP2271563B1/en active Active
- 2009-03-26 PL PL09724078T patent/PL2271563T3/en unknown
- 2009-03-26 WO PCT/EP2009/053627 patent/WO2009118395A1/en active Application Filing
- 2009-03-26 ES ES09724078.2T patent/ES2459044T3/en active Active
- 2009-03-26 RU RU2010142989/12A patent/RU2517553C2/en active
Also Published As
Publication number | Publication date |
---|---|
RU2517553C2 (en) | 2014-05-27 |
RU2010142989A (en) | 2012-05-10 |
WO2009118395A1 (en) | 2009-10-01 |
PL2271563T3 (en) | 2014-12-31 |
US8678246B2 (en) | 2014-03-25 |
DE102008000841B8 (en) | 2014-07-10 |
ES2459044T3 (en) | 2014-05-07 |
EP2271563A1 (en) | 2011-01-12 |
US20110089200A1 (en) | 2011-04-21 |
DE102008000841A1 (en) | 2009-10-01 |
DE102008000841B4 (en) | 2014-04-30 |
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