DE29913396U1 - Piston for a cartridge - Google Patents
Piston for a cartridgeInfo
- Publication number
- DE29913396U1 DE29913396U1 DE29913396U DE29913396U DE29913396U1 DE 29913396 U1 DE29913396 U1 DE 29913396U1 DE 29913396 U DE29913396 U DE 29913396U DE 29913396 U DE29913396 U DE 29913396U DE 29913396 U1 DE29913396 U1 DE 29913396U1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- cartridge
- sealing lip
- wall
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 2
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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
- B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B05C17/00553—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Die Neuerung betrifft einen Kolben für eine Kartusche nach dem Oberbegriff des Anspruches 1.The innovation relates to a piston for a cartridge according to the preamble of claim 1.
Die bekannten Kartuschenkolben weisen einen an der Kolbenwand angeformten Ringsteg auf, dessen äußerer Rand als Dichtlippe ausgebildet ist. Der Ringsteg weist im nicht eingesetzten Zustand mit seinem freiem Ende schräg nach außen. Zwischen dem Ringsteg und dem Kolbenboden besteht ein ringförmiger Spalt V-förmigen Querschnitts. Im in die Kartusche eingesetzten Zustand wird der Ringsteg radial nach innen deformiert, so daß die Dichtlippe unter Vorspannung zur Anlage an die Kartuschenwand kommt.The known cartridge pistons have an annular web formed on the piston wall, the outer edge of which is designed as a sealing lip. When not inserted, the annular web points diagonally outwards with its free end. There is an annular gap with a V-shaped cross-section between the annular web and the piston base. When inserted into the cartridge, the annular web is deformed radially inwards so that the sealing lip comes into contact with the cartridge wall under pre-tension.
Der Kolben besteht aus einem weichen Kunststoffmaterial, während die Kartusche aus einem dazu härteren Material besteht. Beim Einsetzen des Kolbens in die Kartusche kommt es immer wieder vor, daß die Dichtlippe an den scharfkantigen Rand der Kartusche stößt und hierdurch beschädigt wird. Dies ist insbesondere dann der Fall, wenn das Einsetzen des Kolbens in die Kartusche nicht ausreichend zentrisch erfolgt. Weitere Beschädigungen der Dichtlippe erfolgen beim Transport, da die Kolben aus Kostengründen als Schüttgut in Kartons transportiert werden und sich sowohl beim Transport als auch beim Umfüllen gegenseitig beschädigen können.The piston is made of a soft plastic material, while the cartridge is made of a harder material. When inserting the piston into the cartridge, it often happens that the sealing lip hits the sharp edge of the cartridge and is damaged as a result. This is particularly the case if the piston is not inserted into the cartridge in a sufficiently central position. The sealing lip is further damaged during transport, as the pistons are transported in bulk in boxes for cost reasons and can damage each other both during transport and when being transferred.
Diese Beschädigungen der Dichtlippe führen dazu, daß beim Auspressen des Füllmaterials der Kartusche Material zwischen der Kartuschenwand und der Dichtlippe austreten kann.This damage to the sealing lip means that when the filling material is pressed out of the cartridge, material can escape between the cartridge wall and the sealing lip.
Es besteht die Aufgabe, den Kolben für eine Kartusche so auszubilden, daß eine Beschädigung der Dichtlippe weitgehend vermieden wird.The task is to design the piston for a cartridge in such a way that damage to the sealing lip is largely avoided.
Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved with the features of claim 1. Advantageous embodiments can be found in the subclaims.
Ausführungsbeispiele werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:Examples of embodiments are explained in more detail below using the drawings. They show:
Figur 1 einen Schnitt durch den Kolben beim Einsetzen in die Kartusche; Figure 1 shows a section through the piston when inserted into the cartridge;
Figur 2 einen Schnitt bei in die Kartusche eingesetztem Kolben und Figure 2 shows a section with the piston inserted into the cartridge and
Figur 3 einen Schnitt bei einem Ringkolben für eine Zweikomponenten- Figure 3 shows a section of an annular piston for a two-component
Kartusche.Cartridge.
Der Kolben nach den Figuren 1 und 2 weist einen Kolbenboden 1, eine Kolbenwand 2 und einen an die Kolbenwand 2 angeformten Ringsteg 3 auf. Zwischen dem Ringsteg 3 und dem Kolbenboden 1 wird somit ein ringförmiger Spalt 4 V-förmigen Querschnitss gebildet. Im nicht eingesetzten Zustand gemäß Figur 1 weist der Ringsteg 3 mit seinem freien Ende schräg nach außen, bildet also im Querschnitt gesehen einen Kegelstumpf.The piston according to Figures 1 and 2 has a piston bottom 1, a piston wall 2 and an annular web 3 formed on the piston wall 2. An annular gap 4 with a V-shaped cross section is thus formed between the annular web 3 and the piston bottom 1. In the non-inserted state according to Figure 1, the annular web 3 points obliquely outwards with its free end, thus forming a truncated cone when viewed in cross section.
An der Außenseite des Ringstegs ist ein rechteckiger Vorsprung 5 angeformt, dessen obere äußere Kante die Funktion einer Dichtlippe 6 aufweist. Der Ringsteg 3 ist an seinem freien Ende über die Dichtlippe hinaus verlängert, wobei diese Verlängerung als Ringrippe ausgebildet ist.A rectangular projection 5 is formed on the outside of the ring web, the upper outer edge of which has the function of a sealing lip 6. The ring web 3 is extended beyond the sealing lip at its free end, this extension being designed as an annular rib.
Wird der Kolben 1 in die Kartusche 8 eingesetzt, dann kommt als erstes der äußere Rand 9 der Ringrippe 7 in Kontakt mit der Einführungsschräge 10 am unteren Rand der Kartusche 8. Beim weiteren Einsetzen wird der Ringsteg 3 radial nach innen deformiert, wobei dann im eingesetzten Zustand die Dichtlippe 6 unter Vorspannung in Kontakt steht mit der Innenwand 11 der Kartusche 8, wie dies die Figur 2 zeigt. Der äußere Rand 9 der Ringrippe 7 befindet sich hierbei im Abstand zur Innenwand 11.If the piston 1 is inserted into the cartridge 8, the outer edge 9 of the ring rib 7 is the first to come into contact with the insertion bevel 10 on the lower edge of the cartridge 8. As it is inserted further, the ring web 3 is deformed radially inwards, whereby the sealing lip 6 is then in contact with the inner wall 11 of the cartridge 8 under prestress when inserted, as shown in Figure 2. The outer edge 9 of the ring rib 7 is at a distance from the inner wall 11.
Im nicht eingebauten Zustand des Kolbens verläuft die Verbindungslinie 12 zwischen dem äußeren Rand 9 der Ringrippe 7 und der Dichtlippe 6 unter einem spitzen Winkel &agr; zur Einfuhrungsschräge 10 der Kartusche 8. Damit ist gewährleistet, daß stets der äußere Rand 9 in Kontakt tritt mit der Einführungsschräge 10. Die Dichtlippe 6 kommt erst dann mit der Kartuschenwand in Berührung, wenn der Kolben beim Eindrücken in die Kartusche 8 von der konischen Einfuhrungsschräge in den zylindrischen Wandbereich 11 gleitet.When the piston is not installed, the connecting line 12 between the outer edge 9 of the annular rib 7 and the sealing lip 6 runs at an acute angle α to the insertion bevel 10 of the cartridge 8. This ensures that the outer edge 9 always comes into contact with the insertion bevel 10. The sealing lip 6 only comes into contact with the cartridge wall when the piston slides from the conical insertion bevel into the cylindrical wall area 11 when it is pressed into the cartridge 8.
Trotz des vorhandenen Spalts 13 zwischen der Innenwand 11 und der Ringrippe 7 im eingesetzten Zustand des Kolbens ist die Funktion der Dichtlippe 6 beim Auspressen des Füllmaterials voll gewährleistet, da die außenseitige Fläche der Ringrippe 7 wesentlich kleiner ist, als die innenseitige Fläche des Ringstegs 3.Despite the existing gap 13 between the inner wall 11 and the ring rib 7 when the piston is inserted, the function of the sealing lip 6 is fully guaranteed when the filling material is pressed out, since the outer surface of the ring rib 7 is significantly smaller than the inner surface of the ring web 3.
Wie die Figur 3 zeigt, ist das vorbeschriebene Prinzip auch anwendbar bei einem Ringkolben für eine Zweikomponenten-Kartusche. Hier ist zusätzlich ein innerer Ringsteg 14 vorgesehen.As Figure 3 shows, the principle described above can also be applied to an annular piston for a two-component cartridge. In this case, an inner annular web 14 is also provided.
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29913396U DE29913396U1 (en) | 1999-07-31 | 1999-07-31 | Piston for a cartridge |
| PCT/EP2000/006844 WO2001009006A1 (en) | 1999-07-31 | 2000-07-18 | Piston for a cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29913396U DE29913396U1 (en) | 1999-07-31 | 1999-07-31 | Piston for a cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29913396U1 true DE29913396U1 (en) | 2000-01-20 |
Family
ID=8076912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29913396U Expired - Lifetime DE29913396U1 (en) | 1999-07-31 | 1999-07-31 | Piston for a cartridge |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE29913396U1 (en) |
| WO (1) | WO2001009006A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2851991B1 (en) * | 2003-03-05 | 2005-04-22 | PISTON DISPENSER | |
| DE20311287U1 (en) | 2003-07-23 | 2004-12-02 | Sulzer Chemtech Ag | Multicomponent cartridge |
| FR2890940B1 (en) | 2005-09-21 | 2007-10-26 | Fillon Investissement | AEROSOL CONTAINER LIQUID FILLING DEVICE, FILLING SYSTEM SUITABLE FOR RECEIVING SUCH DEVICE AND AEROSOL CONTAINER EQUIPPED WITH SUCH A FILLING DEVICE |
| US8235255B2 (en) | 2008-07-02 | 2012-08-07 | Nordson Corporation | Pistons with a lip seal and cartridge systems using such pistons |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4332308C1 (en) * | 1993-09-23 | 1994-09-29 | Heraeus Kulzer Gmbh | Syringe for the metered dispensing of viscous materials, especially of dental materials |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249709A (en) * | 1989-10-16 | 1993-10-05 | Plas-Pak Industries, Inc. | Cartridge system for dispensing predetermined ratios of semi-liquid materials |
| DE29800594U1 (en) * | 1998-01-15 | 1998-03-26 | Prestele, Eugen, 86179 Augsburg | Venting device |
-
1999
- 1999-07-31 DE DE29913396U patent/DE29913396U1/en not_active Expired - Lifetime
-
2000
- 2000-07-18 WO PCT/EP2000/006844 patent/WO2001009006A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4332308C1 (en) * | 1993-09-23 | 1994-09-29 | Heraeus Kulzer Gmbh | Syringe for the metered dispensing of viscous materials, especially of dental materials |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001009006A1 (en) | 2001-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R207 | Utility model specification |
Effective date: 20000224 |
|
| R081 | Change of applicant/patentee |
Owner name: SULZER CHEMTECH AG, CH Free format text: FORMER OWNER: PRESTELE, EUGEN, 86161 AUGSBURG, DE Effective date: 20010712 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20021128 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20050729 |
|
| R158 | Lapse of ip right after 8 years |
Effective date: 20080201 |