WO2011070082A1 - Piston pour cartouche - Google Patents

Piston pour cartouche Download PDF

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Publication number
WO2011070082A1
WO2011070082A1 PCT/EP2010/069199 EP2010069199W WO2011070082A1 WO 2011070082 A1 WO2011070082 A1 WO 2011070082A1 EP 2010069199 W EP2010069199 W EP 2010069199W WO 2011070082 A1 WO2011070082 A1 WO 2011070082A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
media
cover
piston body
drive
Prior art date
Application number
PCT/EP2010/069199
Other languages
German (de)
English (en)
Inventor
Manfred Obrist
Original Assignee
Sulzer Mixpac Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sulzer Mixpac Ag filed Critical Sulzer Mixpac Ag
Priority to BR112012013661A priority Critical patent/BR112012013661B8/pt
Priority to KR1020127014858A priority patent/KR101833406B1/ko
Priority to EP10787476.0A priority patent/EP2509718B1/fr
Priority to AU2010329898A priority patent/AU2010329898B2/en
Priority to CA2783924A priority patent/CA2783924C/fr
Priority to SI201031414A priority patent/SI2509718T1/sl
Priority to CN201080056128.XA priority patent/CN102770217B/zh
Priority to US13/514,179 priority patent/US9144821B2/en
Priority to ES10787476.0T priority patent/ES2617329T3/es
Publication of WO2011070082A1 publication Critical patent/WO2011070082A1/fr
Priority to IN5080DEN2012 priority patent/IN2012DN05080A/en

Links

Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • 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
    • B05C17/00553—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 with means allowing the stock of material to consist of at least two different components
    • B05C17/00559—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 with means allowing the stock of material to consist of at least two different components the different components being stored in coaxial chambers
    • 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
    • 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
    • B05C17/01—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 with manually mechanically or electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • 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
    • 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
    • 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 invention relates to a piston for a cartridge, in particular for the discharge of solids-containing filling compounds.
  • Such a piston is known for example from DE 200 10 417 U1.
  • the piston has a first piston part, which is provided with a sealing lip. The sealing lip abuts the cartridge wall.
  • EP 1 165 400 B1 Another previously known piston is disclosed in EP 1 165 400 B1.
  • This piston is made of a soft plastic, such as a low density polyethylene (LDPE), to provide the required seal to the cartridge wall.
  • LDPE low density polyethylene
  • Such a piston can be only partially compatible with materials which form the filling material of the cartridge. To avoid the piston being along its
  • Cover which consists of a plastic which is resistant to the filling compound.
  • the cover member covers a majority of the cross-sectional area on the media side, with the exception of the edge region which is adjacent to the cartridge wall.
  • the edge region is formed by a limb which extends outside the cover element along the outer circumference of the piston in the direction of the media side.
  • the leg is separated from the cover by a V-shaped groove.
  • the leg in this embodiment is in contact with the filling compound, the remaining regions of the piston are shielded by the covering element.
  • contact with the piston material leads to a swelling of the piston material, thus causing a widening in the area of the leg. This has the advantage that the sealing effect is possibly enhanced.
  • you can too several sealing lips may be arranged on the piston circumference, which is known for example from CH 610 994.
  • the object of the invention is to provide an improvement to said piston, so that the cover and the piston body can be produced in a single step.
  • Multi-component injection molding process in particular produced in a mounting injection molding process.
  • assembly injection molding process is meant an injection molding process in which at least one
  • Assembly injection molding is also commonly used the term agility injection molding process.
  • mutually movable components can be produced in a single step, such as adjustable ventilation slots in
  • Ventilation elements or hinges are Ventilation elements or hinges.
  • the piston has a media side and one of the media side
  • the media side comprises a media-side surface and the piston skirt forms a connection between the media side and the drive side, wherein the
  • Piston jacket is arranged around a piston axis and is connected via a web element with a piston body, so that between the piston body and piston skirt on the media side, a circumferential groove is formed, which surrounds the media-side surface, wherein on the media side, a cover member is arranged, which has a media-side surface and has a drive-side surface.
  • the drive-side surface lies directly on the media-side surface of the piston body directly completely, that is, the media-side surface of the piston body and the drive-side surface of the cover touching each other substantially on the entire common surface, that is, there is a surface contact, which is substantially extends to the entire common surface.
  • the cover is sprayed in multi-component injection molding directly on the surface of the piston body. Therefore, the media-side surface of the piston body follows the contours of the drive-side surface of the cover. The media-side surface of the piston body is therefore an image of the drive-side surface of the cover.
  • the piston skirt can merge on the media side into a projection which has a guide element for guiding the piston in a cartridge.
  • This guide element forms a protective edge to damage the sealing lip during the manufacturing process
  • the sealing lip is suitable for making a sealing contact with a wall of the cartridge.
  • the cover member has a media-side surface opposite to the drive-side surface, wherein the media-side surface of the cover member is concave.
  • a concave surface is to be understood as meaning, in particular, a surface with a dent, which is arranged on the media-side surface.
  • the dent is a rotationally symmetrical indentation, which has the shape of a segment of a sphere or can also be configured as a pole segment of an ellipsoid, if the cross-sectional area of the bulb is elliptical. It is also conceivable that the concave surface has the shape of a cone tip.
  • Bump be provided, which engages in a corresponding recess of the drive-side surface of the cover.
  • the media side surface of the cover may be provided, which engages in a corresponding recess of the drive-side surface of the cover.
  • Piston body may be provided a recess in a
  • the bulge may be, for example, a groove which is arranged as part of a ring around the piston axis.
  • a plurality of grooves may be disposed at different radial distances to the piston axis.
  • the bulges may be at least partially offset from each other, so that an air flow around the bulges around takes place.
  • the bulges form a labyrinth structure through which air from the reservoir chambers of the cartridge can pass through the piston.
  • This variant comes in particular for a groove into consideration, which is designed annular, which fulfills a function as a sealing element.
  • the cover member according to an advantageous embodiment, a pin member or a valve element, which extends through the piston body to the drive side of the piston. The pin element and / or the
  • Valve element may be formed as a conical plug element. Furthermore, the pin element rotationally symmetrical with respect to the
  • the pin element and / or the valve element is movable relative to the piston body, so that a connection path between the valve element and the piston body can be formed.
  • the pin element or valve element has in each case a corresponding end, which the
  • Pin element or the valve element can be lifted under the action of a compressive force of the corresponding seat, so for a vent
  • Venting gap and the connection path between cover and piston body can be formed.
  • Support member may protrude into the groove formed between the piston body and piston skirt.
  • the groove has a groove bottom, wherein in the groove bottom a
  • Receiving element is mounted, in which protrudes the edge of the jacket-shaped support member.
  • the support member may according to a preferred embodiment comprise at least one venting gap, which with the
  • Venting gap in particular with an annular venting gap and the connection path is connectable.
  • the venting gap is, for example, as a slot in the shell-shaped
  • Support element formed. A plurality of venting gaps may be provided. These venting gaps may be on the perimeter of the
  • Venting column may be arranged at regular intervals to each other.
  • a method for producing a piston according to one of the preceding embodiments comprises the steps of producing the core body by injection molding and then attaching the cover member in the multi-component injection molding process on the same
  • a cartridge for the discharge of several components contains at least one piston, preferably a plurality of pistons, wherein the components are arranged in juxtaposed or coaxially arranged cavities of the cartridge.
  • a dispensing device can be connected to the cartridge or the cartridge can be inserted into a dispensing device. By means of the dispensing device, the piston is movable. The dispensing device can be connected to the piston on the drive side.
  • piston according to one of the preceding embodiments use for the discharge of solids-containing fillers, as well as pasty or viscous masses.
  • the invention will be explained with reference to the drawings. Show it:
  • FIG. 1 shows a piston according to a first embodiment of the
  • Fig. 5 shows an annular piston according to another embodiment of the invention.
  • Fig. 1 shows a piston according to a first embodiment of the invention.
  • the piston 1 comprises a piston body 2, which is usually made of plastic by means of an injection molding process.
  • the piston 1 is preferably used to discharge a filling material, in particular of fluid or pasty media, from a cartridge.
  • the filling compound may also contain solids.
  • the filling compound is located in a storage chamber of the cartridge 17, in which the piston 1 is displaceable.
  • a wall 16 of the storage chamber of the cartridge 17 is partially shown.
  • the piston 1 slides along the wall 16 and pushes in this movement, the filling compound through a discharge opening, not shown.
  • the side of the piston 1 facing the filling compound will be referred to below as the media side 3.
  • a pressing force by means of a discharge device or a pressurized fluid
  • the dispensing device 10 of which a plunger element is shown, located on the side of the piston, which is the media side 3 opposite. This page is referred to below as the drive side 4.
  • the piston 1 comprises a piston body 2 and a piston skirt 5.
  • the piston body 2 is delimited by the drive side 4, the media side 3 and the piston skirt 5.
  • the piston skirt 5 forms a connection between the media side 3 and the drive side 4, wherein the
  • Piston jacket 5 is arranged around a piston axis 9.
  • the piston skirt 5 is connected to the piston body 2 via an annular web element 26, so that a peripheral groove 23 is formed between the piston body 2 and piston skirt 5 on the media side.
  • a peripheral groove 23 is formed between the piston body 2 and piston skirt 5 on the media side.
  • the piston skirt 5 is rotationally symmetrical when the piston 1 for receiving in a Cartridge 17 is determined with a cylindrical pantry.
  • the piston 1 is usually a plastic component, which advantageously in
  • the piston body 2 has a plurality of
  • Recesses from or is constructed as a hollow body already for reasons of saving material and due to the difficulties that the injection molding of thick-walled components entails, the piston body 2 and the piston skirt 5 are already made from diameters of a few centimeters as thin-walled components. The required dimensional stability of the piston body 2 is replaced by stiffening ribs 15. Die
  • Stiffening ribs 15 are arranged on the drive side 4 of the piston 1. The provision of stiffening ribs 15 ensures that the piston 1 remains dimensionally stable, even when the discharge of the filling material of the piston 1 is set by means of a discharge under pressure load.
  • Piston body 2 is mounted on the media side 3. Such a thing
  • Cover 13 may advantageously be made of a material which has a higher resistance to the filling than the material from which the piston body is made.
  • Cover 13 unfold a protective function for the piston body 2.
  • a cover member 13 is thus preferably used when the
  • LDPE low density polyethylene
  • LDPE low density polyethylene
  • polyester resins and swells up On the media-side surface 27 of the cover 13, a jacket-shaped support member 21 is attached to the outer periphery of the embodiment according to FIG. The coat-shaped
  • Support element 21 is in surface contact with the piston body 2.
  • the cover 13 thus has a drive-side surface 29, which on the media-side surface 28 of the piston body 2 directly
  • Cover member 13 is connected to the media-side surface 28 of the
  • Piston body 2 in touching contact in such a way that in essentially the entire common surface ebbeiteit 29 on the media-side surface 28 along the entire common
  • Contact surface rests.
  • at least 60% of the drive-side surface 29 of the cover 13 with the media-side surface 28 of the piston body 2 in surface contact more preferably at least 75%, in particular at least 90%.
  • the jacket-shaped support element 21 protrudes into a circumferential groove 23 of the piston body 2 on the media side 3.
  • the groove 23 has a groove base 36, wherein in the groove base 36, a receiving element 37 is mounted, in which the edge 35 of the jacket-shaped support member 21 engages.
  • the cover 13 is held there so that the cover 13 can not be detached from the piston body 2. The attachment is made by the
  • the edge 35 of the jacket-shaped support member 21 is configured substantially cylindrical.
  • the cover member 13 has a media-side surface 27, which is disposed opposite to the drive-side surface 29.
  • the medial-side surface 27 of the cover member 13 has a concave curvature.
  • Settling speed is the speed with which the piston is moved in order to discharge the filling material in the cartridge.
  • the cover 13 may be made of a more dimensionally stable material than the piston body 2.
  • connection of a cover 13 could be realized with a piston body 2 only under two essential limitations.
  • an additional assembly step must be provided in order to connect the piston body 2 and cover element 13 produced in two different working steps. Due to this additional assembly step, a joining of a valve element 22 with an axis 34 can only take place when the axis 34 of the
  • Valve element 22 is aligned parallel to the piston axis 9. Only under this boundary condition can the cover element 13, which contains the valve element 22, be nondestructively inserted into the corresponding recess of the piston body 2 in such a way that the tightness with respect to the exit of filling compound on the drive side 4 of the piston can be ensured.
  • the piston body 2 and the cover element 13 can not be destroyed with one another in a non-destructive manner Intervention be brought. Therefore, when using the conventional
  • Multi-component injection molding process can be mounted stress-free. If the material of the cover 13 is a material of the
  • Piston body 2 has distinctive thermal expansion
  • the cover 13 may undergo similar to a shrink fit a firmer, that is denser connection with the piston body 2. That is, the channels between the piston body and cover are sealed, as long as the pin member 19 or the valve member 22 is not opened.
  • the cross-sectional area of the passage opening for the air can be selected larger, because the sealing function is taken over by the cover 13 and the piston body 2. If the valve element 22 is opened, the throughput of the air can be increased, because the larger passage opening is released, so that the air passing through the passage opening can be dissipated more quickly, without thereby additional effort in the assembly of the
  • Piston body 2 and the cover 13 would be required.
  • valve elements may be provided, in particular for an annular piston according to FIG. 5.
  • a recess 30 is provided which in a corresponding recess 31 of
  • Bulge 31 acc. FIG. 1 or the bulge 32 according to FIG. 4 is a groove which is arranged as part of a ring around the piston axis 9. Due to the special contour, the groove has a function as a sealing element. Therefore, the bulge 32 contacts the recess 33 along the entire common surface. Again, the sealing function by the
  • shrinkage is 0.8% for a polyamide and 2.2% for a low density polyethylene. Accordingly, the difference between polyamide and the low-density polyethylene is 1.4%.
  • a plurality of protrusions 31, 32 may be arranged at different radial distances to the piston axis, which is shown in Fig. 2.
  • the cover member 13 includes a pin member 19 which extends through the piston body 2 to the drive side of the piston 1.
  • Pin element 19 rotationally symmetrical relative to the piston axis 9.
  • the cover 13 or the piston body 2 may also be
  • Venting element 14 included. This venting element serves to remove gases from gas inclusions, which arise, for example, during insertion of the piston into the cartridge wall, from the piston interior.
  • the gas may be air.
  • venting element 14 is shown in section in FIG. 1 and in FIG. 3 in a view of the piston 1 on its media side 3.
  • This venting element 14 gas, which is located in the interior of the cartridge 17 between filling compound and piston 1, to the outside, that is, to escape to the drive side 4, without the filling material exiting.
  • the venting element 14 is closed as long as the cartridge 17 is stored in the filled state. If the filling material is to be discharged, the dispensing device 10 is brought into contact with the piston 1 on its drive side 4. In this case, the dispensing device can also come into contact with a pin element 19 or a valve element 22 of the cover element 13.
  • the pin element 19 or the valve element 22 can by means of a
  • Opening element which is on the drive side with the dispenser 10 in conjunction, are opened by the pin member 19 from its seat
  • Valve element 22 is the seal on the recovery behavior of concave contour of the cover 13 ensures.
  • the concave contour may be formed as part of a spherical surface.
  • a venting element 14 several small
  • Connection path between the piston body 2 and the cover 13 may be provided. Any filling material passing through the venting gaps will travel along this labyrinthine communication path
  • the piston 1 has means against the discharge of filling material on the
  • At least one sealing lip is usually provided along the sliding surface on the wall 17 of the cartridge 16.
  • this sealing lip is shown as a guide element 7.
  • the guide member 7 is located on a projection 6 which extends between the groove 23 and the wall 17 of the cartridge 16.
  • the projection 6 is a thin-walled in the embodiment
  • the arm belongs to an annular bead which extends along the entire circumference of the piston body 2 and via the guide member 7 forms a fluid-tight connection with the wall 16 of the cartridge 17.
  • the projection 6 has a guide element 7 for guiding the piston in a cartridge 17, which is suitable for producing a sealing contact with a wall 16 of the cartridge 17.
  • the guide element 7 may be formed in particular as a sealing lip. If necessary, a plurality of sealing lips may be provided.
  • the piston skirt 5 also has a recess 25 for a
  • the projection 6 comprises a stripping element 8, which in the uninstalled state has a smaller distance from the media side 3 than the guide element 7.
  • the projection 6 is already inserted into the interior of the cartridge 17.
  • the piston does not lie with the guide element 7 in the installed state on the wall 16 of the cartridge.
  • the filling compound is on the
  • the projection 6 advantageously has a support surface 1 1, which is moved under the action of the pressure force in the direction of the wall 16.
  • the bearing surface 1 1 is thus arranged such that any solid particles detected by means of the scraping element 8 are discharged together with the filling compound. If the discharge progresses further, the particles will continue to slide on the supporting surface 1 1 in the direction of the groove 23.
  • a Kippschselement 18 is arranged, which serves to improve the guidance of the piston in a cartridge 17.
  • the anti-tip element 18 may function as a second sealing lip, in particular to ensure a tightness even if the first sealing lip is leaking.
  • the piston is guided by the anti-tip element 18, which is in contact with the wall 16 of the cartridge 17, non-tilting, that is, the axis of the piston body 2 coincides with the piston axis 9.
  • the anti-tilting element 18 ensures that the media side 3 is arranged in a plane normal to the piston axis 9, or if the media side 3 is not a flat surface or contains portions that are not in a plane that points the media-side piston surface by a certain Radius and a certain height are located along the circumference in substantially the same normal plane.
  • the condition for such rotationssymmet cal points would no longer be satisfied.
  • a peripheral contact with the wall 16 of the cartridge 17 can thus be maintained throughout the discharge process, so that a deflection of the piston 1 can be prevented together with the guide element 7 described earlier.
  • FIG. 4 shows, in contrast to FIG. 1, that on the media-side surface 29 of the piston body 2, a bulge 32 is provided, which engages in a corresponding indentation 33 of the drive-side surface 28 of the cover element 13. This bulge also acts as a sealing element.
  • FIG. 5 shows an annular piston 51, as used, for example, for coaxial cartridges.
  • the representation does not contain the already in
  • a valve pin and the sealing elements in particular circular sealing elements, which may also be present in the same way in this embodiment.
  • a valve pin and the sealing elements in particular circular sealing elements, which may also be present in the same way in this embodiment.
  • two or more coaxially arranged cylindrical cavities are arranged. Each of these cavities is filled with a component.
  • the one or more internal cavities are completely surrounded by the outer cavity, which is formed as a cylindrical cartridge.
  • the annular piston 51 comprises a piston body 52 which is usually made of plastic by means of an injection molding process.
  • the annular piston 51 is preferably used to discharge a filling material, in particular of fluid or pasty media, from a cartridge.
  • the filling compound may in particular also contain solid particles.
  • a wall 16 of the cartridge 17 is shown. The annular piston 51 slides along the wall 16 and pushes in this movement, the filling compound by a not shown
  • the side facing the filling material of the annular piston 51 will be referred to below as the media page 53.
  • the dispenser which is not shown here, is located on the side of the piston, the the media side 53 is opposite. This page is referred to below as the drive side 54.
  • inner piston Within the inner tube 67 is usually a further piston, hereinafter referred to as inner piston, arranged, which is not shown in Fig. 5.
  • This inner piston is designed like the piston in the embodiment according to FIG. 1.
  • the inner piston is moved simultaneously with the annular piston 51 to discharge the filling material from the storage areas of the cartridge 17. The following is therefore only on the
  • the piston body 52 is thus bounded by the drive side 54, the media side 53 and an outer piston skirt 5 and an inner piston skirt 55.
  • the outer piston skirt 5 may have the same structure as in the previous embodiments.
  • the inner piston skirt 55 forms the inner connection between the drive side 54 and the media side 53.
  • the inner piston skirt 55 delimits the piston body 52 on an inner side 59 facing the piston axis 9.
  • the inner piston skirt 55 merges into a projection 56 on the media side 53.
  • the projection 56 is in the embodiment, a thin-walled rotationally symmetrical body, which is visible in the sectional view as an arm of the piston body 52.
  • the projection 56 has an inner
  • Guide member 57 for guiding the annular piston 51 along, ie in the direction of the piston axis 9, for example along an inner tube 67 on.
  • the guide member 57 is suitable for making a sealing contact with a wall 66 of the inner tube 67.
  • the guide member 57 may be formed in particular as a sealing lip. If necessary, a plurality of sealing lips may be provided.
  • the projection 56 may comprise a stripping element 58, which has a smaller distance to the media side 53 than the guide element 57. For determining the distance, the dimension of the annular piston is determined which is closest to the filling compound or even extends into the filling compound.
  • the guide member 57 abuts against the wall 66 of the inner tube 67 and seals the interior of the cartridge containing the filling compound against the environment, so that leakage of the filling compound is prevented on the drive side.
  • a support surface 61 which is arranged between 80 ° and 1 10 °, in particular substantially normal to the piston axis 9.
  • the bearing surface 61 is thus arranged such that any solid particles detected by means of a scraping element 58 are discharged together with the filling compound. If the support surface 61 is arranged substantially normal to the piston axis, the solid particles can migrate in the direction of the piston axis. An accumulation of solid particles in the
  • the annular piston 51 may also contain a venting element, which is not shown here in the drawing.
  • the piston body 52 also has
  • the cover 63 may be configured the same, as described in connection with FIG. 1 to FIG. 4.
  • the cover element 63 of the annular piston 51 according to FIG. 5 has a media-side surface 77 and a drive-side surface 79.
  • the piston body 52 has a media-side surface 78. Also from this embodiment it can be seen that the drive side

Abstract

L'invention concerne un piston (1, 51) comprenant un corps de piston (2, 52), qui est entouré par une face substances (3, 53), un face entraînement (4, 54) opposée et côté périphérique, par une jupe de piston (5, 55), ladite jupe de piston (5, 55) formant une jonction entre la face substances (3, 53) et la face entraînement (4, 54). La jupe de piston (5, 55) est disposée autour d'un axe de piston (9), la jupe de piston (5, 55) étant reliée par un élément de type traverse (26, 76) au corps de piston (2, 52), de sorte qu'une rainure périphérique (23, 73) est formée entre le corps de piston (2, 52) et la jupe de piston (5, 55) sur la face substances (3, 53). Un élément de recouvrement (13, 63) qui présente une surface (29, 79) côté entraînement est disposé sur la face substances (3, 5), ladite surface reposant directement sur la surface (28, 78) côté substances du corps de piston (2, 52).
PCT/EP2010/069199 2009-12-11 2010-12-08 Piston pour cartouche WO2011070082A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BR112012013661A BR112012013661B8 (pt) 2009-12-11 2010-12-08 Pistão de cartucho e processo para a produção do mesmo
KR1020127014858A KR101833406B1 (ko) 2009-12-11 2010-12-08 카트리지 피스톤
EP10787476.0A EP2509718B1 (fr) 2009-12-11 2010-12-08 Piston à cartouche
AU2010329898A AU2010329898B2 (en) 2009-12-11 2010-12-08 Cartridge piston
CA2783924A CA2783924C (fr) 2009-12-11 2010-12-08 Piston pour cartouche
SI201031414A SI2509718T1 (sl) 2009-12-11 2010-12-08 Bat kartuše
CN201080056128.XA CN102770217B (zh) 2009-12-11 2010-12-08 料筒活塞
US13/514,179 US9144821B2 (en) 2009-12-11 2010-12-08 Cartridge piston
ES10787476.0T ES2617329T3 (es) 2009-12-11 2010-12-08 Pistón de cartucho
IN5080DEN2012 IN2012DN05080A (fr) 2009-12-11 2012-06-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09178940.4 2009-12-11
EP09178940 2009-12-11

Publications (1)

Publication Number Publication Date
WO2011070082A1 true WO2011070082A1 (fr) 2011-06-16

Family

ID=42077500

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/069199 WO2011070082A1 (fr) 2009-12-11 2010-12-08 Piston pour cartouche

Country Status (12)

Country Link
US (1) US9144821B2 (fr)
EP (1) EP2509718B1 (fr)
KR (1) KR101833406B1 (fr)
CN (1) CN102770217B (fr)
AU (1) AU2010329898B2 (fr)
BR (1) BR112012013661B8 (fr)
CA (1) CA2783924C (fr)
ES (1) ES2617329T3 (fr)
IN (1) IN2012DN05080A (fr)
SI (1) SI2509718T1 (fr)
TW (1) TWI510298B (fr)
WO (1) WO2011070082A1 (fr)

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WO2021089267A1 (fr) * 2019-11-07 2021-05-14 Siemens Aktiengesellschaft Procédé pour produire un piston avec une structure intermédiaire fabriquée de manière additive

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ES2470240T3 (es) * 2011-07-15 2014-06-23 Sulzer Mixpac Ag Medio de seguridad del pistón
US9309042B2 (en) * 2013-06-14 2016-04-12 Nordson Corporation Liquid dispensing syringe and method for reducing piston bounce
EP2873465A1 (fr) * 2013-11-18 2015-05-20 Sulzer Mixpac AG Piston pour distribuer un fluide d'une cartouche
EP2998030A1 (fr) 2014-09-17 2016-03-23 Sulzer Mixpac AG Piston destiné à une cartouche, cartouche et procédé pour purger l'air d'une cartouche
DE102014226304A1 (de) * 2014-12-17 2016-06-23 Robert Bosch Gmbh Kolben-Kraftstoffpumpe für eine Brennkraftmaschine
DE102014226316A1 (de) * 2014-12-17 2016-06-23 Robert Bosch Gmbh Kolben-Kraftstoffpumpe für eine Brennkraftmaschine
AU2016210598B9 (en) * 2015-08-05 2021-11-04 Illinois Tool Works Inc. Tool for forming a cartridge piston and method
FR3047186B1 (fr) * 2016-02-01 2020-02-14 Albea Lacrost Dispositif de purge d'air pour distributeur de produit liquide sans reprise d'air
DE202016006508U1 (de) * 2016-10-21 2017-01-09 Ritter Gmbh Kartuschenkolben mit Entlüfteventil
DE102017203241A1 (de) 2017-02-28 2018-08-30 Fischbach Kg Kunststoff-Technik Kolben für Kartuschen
EP3501670A1 (fr) * 2017-12-20 2019-06-26 Sulzer Mixpac AG Piston, cartouche et procédé pour purger l'air d'une cartouche
EP3501782A1 (fr) * 2017-12-20 2019-06-26 Sulzer Mixpac AG Procédé de fabrication d'un piston à deux composants, moule d'injection pour un piston à deux composants, piston à deux composants et cartouche
WO2019121399A1 (fr) * 2017-12-20 2019-06-27 Sulzer Mixpac Ag Piston, cartouche et méthode de ventilation d'une cartouche
US10968031B2 (en) * 2017-12-27 2021-04-06 Sulzer Mixpac Ag Piston for a collapsible cartridge
FR3081113B1 (fr) * 2018-05-18 2020-05-29 Albea Le Treport Piston pour reservoir d'un distributeur d'un produit fluide sans reprise d'air
WO2024028822A1 (fr) * 2022-08-05 2024-02-08 Baralan International S.P.A. Piston pour un récipient pourvu d'un distributeur sans air pour un produit fluide, tel qu'un produit cosmétique

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CH610994A5 (en) 1976-08-31 1979-05-15 Alcan Aluminiumwerke Piston, in particular for a composition container for joint injection
EP1165400B1 (fr) 2000-01-28 2003-01-02 Sulzer Chemtech AG Piston de cartouche
DE20010417U1 (de) 2000-06-09 2001-10-11 Sulzer Chemtech Ag Winterthur Entlüftungsvorrichtung bei einem Kolben für eine Kartusche
WO2005023655A2 (fr) * 2003-09-11 2005-03-17 Glaxosmithkline Consumer Healthcare Gmbh & Co Kg Nouveau dispositif
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Publication number Priority date Publication date Assignee Title
WO2021089267A1 (fr) * 2019-11-07 2021-05-14 Siemens Aktiengesellschaft Procédé pour produire un piston avec une structure intermédiaire fabriquée de manière additive

Also Published As

Publication number Publication date
KR20120123027A (ko) 2012-11-07
CN102770217A (zh) 2012-11-07
KR101833406B1 (ko) 2018-02-28
AU2010329898A1 (en) 2012-07-05
BR112012013661B8 (pt) 2023-03-21
EP2509718B1 (fr) 2016-11-30
TWI510298B (zh) 2015-12-01
US9144821B2 (en) 2015-09-29
CA2783924C (fr) 2018-05-15
EP2509718A1 (fr) 2012-10-17
IN2012DN05080A (fr) 2015-10-09
BR112012013661A2 (pt) 2020-10-27
AU2010329898B2 (en) 2014-12-04
ES2617329T3 (es) 2017-06-16
TW201132417A (en) 2011-10-01
CN102770217B (zh) 2016-01-13
SI2509718T1 (sl) 2017-04-26
BR112012013661B1 (pt) 2021-07-20
US20120247323A1 (en) 2012-10-04
CA2783924A1 (fr) 2011-06-16

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