EP2522438A2 - Pistons de fermeture et d'impression pour cartouches pour masses plastiques et procédé d'insertion d'un tel piston dans une cartouche - Google Patents
Pistons de fermeture et d'impression pour cartouches pour masses plastiques et procédé d'insertion d'un tel piston dans une cartouche Download PDFInfo
- Publication number
- EP2522438A2 EP2522438A2 EP12001289A EP12001289A EP2522438A2 EP 2522438 A2 EP2522438 A2 EP 2522438A2 EP 12001289 A EP12001289 A EP 12001289A EP 12001289 A EP12001289 A EP 12001289A EP 2522438 A2 EP2522438 A2 EP 2522438A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- piston plate
- sealing lip
- cartridge
- skirt
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 230000007704 transition Effects 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000013022 venting Methods 0.000 description 10
- 238000005452 bending Methods 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 206010000496 acne Diseases 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- 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
- 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
Definitions
- the invention relates to a sealing and ejecting piston made of elastic plastic for cartridges for plastic masses, which has a venting function, which allows the escape of between the piston and the filling material of the cartridge when inserting the piston in the open rear cartridge end after filling the cartridge.
- Pistons with bleeding function have long been known.
- the venting function by itself, because the necessary to achieve a good seal necessarily relatively soft sealing lips at the onset of the piston in the rear end of the cartridge under the pressure of the compressed trapped air between Piston and filling mass moved back the sealing lips and let the trapped air escape.
- valves in such pistons which have a valve element which open the valve element by a piston setting tool when inserting the piston into the rear end of the cartridge, which then closes elastically again.
- valve arrangements are not without problems.
- provision must be made that no filling material can penetrate into the venting passages through the valve mechanism, which could prevent a clean closing of the valve, otherwise the permanent leakage of the valve and the gradual intrusion of ambient air constituents would lead to spoilage of the cartridge contents.
- the invention is therefore an object of the invention to provide a piston with forward-facing sealing lip with venting function, which does not require vent valve and allows for insertion into a cartridge reliable ventilation. Preferably should Even the risk of damage to the forward facing sealing lip can be largely reduced.
- the invention has for its object to provide a method with which a piston with forward-facing sealing lip, which is not itself designed with a special, causing a vent function design, can be used in a cartridge with simultaneous generation of a vent.
- the pistons shown in the drawings each consist of a slightly forwardly curved piston plate 1 and a backward cylindrical skirt 2.
- the transition region between the piston plate 1 and the contactor 2 is formed with a V-shaped cross-sectional profile which opens to the front, so that a forward-facing obliquely forward and outwardly extending sealing lip 3 is formed on the circumference of the piston plate 1, which cooperates with the inner wall of the cartridge.
- a forward-facing obliquely forward and outwardly extending sealing lip 3 is formed on the circumference of the piston plate 1, which cooperates with the inner wall of the cartridge.
- On the outside of the skirt further, axially spaced, but facing rearward sealing lips 4 are formed, which also cooperate with the cartridge inner wall.
- a radially outer, rearwardly projecting ring 6 is formed on the rear side of the piston plate, which is conical and has an obliquely backwards and inwards to the piston axis extending cross-section and projecting axially beyond the setting ring 5 to the rear.
- This radially outer ring 6 serves to transmit the thrust force of a Auspressst Zis when expressing the cartridge on the piston, causing its conical shape, that the forward-facing sealing lip 3 seeks to spread outwards and thereby their sealing contact with the cartridge inner wall is reinforced.
- the in the Fig. 2a and 2b illustrated piston differs from the further feature that the forwardly facing sealing lip 3 has on its inside a coronary arrangement distributed with equal circumferential intervals arranged small radial ribs 7, which are arranged on the inner, so the piston axis side facing the sealing lip. They are not connected to any other part of the piston. They project axially forward slightly beyond the sealing lip 3 and each have an outwardly facing inclined ramp surface 8, which extends obliquely backwards and outwards and merges into the sealing edge surface of the sealing lip 3.
- Fig. 3a to 3f illustrated piston is formed with other features, which, as will be described below, alternatively or cumulatively used to accomplish a venting function of the piston when inserted into the rear end of the cartridge without the need for a valve can.
- the setting ring 4 at two diametrically opposite locations in each case a survey in the form of a over the rest of the set ring 5 to the rear projecting nubs 9.
- These two pimples are on the same (in Fig. 3b drawn) diameter line or transverse axis, with respect to which the ribs 7 are arranged on both sides.
- the nubs 9 may alternatively be provided to or cumulatively connected to the piston plate 1 ribs 7.
- Such nubs 9 can therefore also in piston embodiments, as shown in the Fig. 1a and 1b 2a and 2b, are provided, which then with a conventional unchanged setting tool the same effect of bringing about a slight deflection of the piston about the transverse axis or diameter line, on which the two nubs 9 are to bring about, and thereby produce a venting function.
- the setting tool has there each a projecting central cylindrical portion 10 which engages centering in the setting ring 5, and a graduated, larger diameter cylindrical portion 11 which engages with its front end surface on the rear end surface of the setting ring 5 and the axial thrust transfers to this.
- the axial thrust is concentrated on two diametrically opposite, ie on a transverse axis or diameter line areas of the set ring of the piston, so that it is slightly bent due to the unequal load around this transverse axis when setting and the venting function takes place.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12001289T PL2522438T3 (pl) | 2011-05-09 | 2012-02-28 | Tłok zamykający i wyciskający do wkładów do mas plastycznych i sposób osadzania takiego tłoka we wkładzie |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011100976A DE102011100976A1 (de) | 2011-05-09 | 2011-05-09 | Verschluss- und Ausdrückkolben für Kartuschen für plastische Massen und Verfahren zum Einsetzen eines solchen Kolbens in eine Kartusche |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2522438A2 true EP2522438A2 (fr) | 2012-11-14 |
EP2522438A3 EP2522438A3 (fr) | 2013-03-06 |
EP2522438B1 EP2522438B1 (fr) | 2014-07-30 |
Family
ID=45877932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12001289.3A Active EP2522438B1 (fr) | 2011-05-09 | 2012-02-28 | Pistons de fermeture et d'impression pour cartouches pour masses plastiques et procédé d'insertion d'un tel piston dans une cartouche |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2522438B1 (fr) |
DE (1) | DE102011100976A1 (fr) |
PL (1) | PL2522438T3 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017128958A1 (de) * | 2017-12-06 | 2019-06-06 | 3lmed GmbH | Verfahren und Setzwerkzeug zum Einsetzen eines Kolbens in einen Behälter |
DE112018003387A5 (de) | 2017-12-06 | 2020-03-19 | 3lmed GmbH | Verfahren und Setzwerkzeug zum Einsetzen eines Kolbens in einen Behälter |
DE202018003641U1 (de) * | 2018-08-07 | 2018-08-29 | Ritter Gmbh | Mit Zentrierhilfe ausgestatteter Kartuschenkolben |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4229588C2 (de) * | 1992-09-04 | 1995-07-13 | Alfred Fischbach Kunststoff Sp | Kartusche für pastöse Massen |
DE29702551U1 (de) * | 1997-02-14 | 1997-03-27 | Prestele Eugen | Verschlußvorrichtung |
AU2968999A (en) * | 1998-03-19 | 1999-10-11 | Hugo Nilsson | Cap for a cartridge and method and tool for affecting said cap |
DE20319464U1 (de) * | 2002-12-10 | 2004-04-22 | Topic, Anton | Kolben für eine Kartusche zum Aufbewahren und Auspressen von pastösen Substanzen und Kartusche mit demselben |
DE202006015313U1 (de) * | 2006-10-06 | 2008-02-21 | Sulzer Chemtech Ag | Kartuschenkolben |
DE202008007834U1 (de) * | 2008-06-12 | 2008-08-21 | Gfv Verschlusstechnik Gmbh & Co. Kg | Kolben zum Auspressen von Füllsubstanzen |
-
2011
- 2011-05-09 DE DE102011100976A patent/DE102011100976A1/de not_active Withdrawn
-
2012
- 2012-02-28 EP EP12001289.3A patent/EP2522438B1/fr active Active
- 2012-02-28 PL PL12001289T patent/PL2522438T3/pl unknown
Non-Patent Citations (1)
Title |
---|
None |
Also Published As
Publication number | Publication date |
---|---|
EP2522438A3 (fr) | 2013-03-06 |
DE102011100976A1 (de) | 2012-11-15 |
EP2522438B1 (fr) | 2014-07-30 |
PL2522438T3 (pl) | 2015-01-30 |
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