DE8401902U1 - Guide sealing element - Google Patents
Guide sealing elementInfo
- Publication number
- DE8401902U1 DE8401902U1 DE8401902U DE8401902DU DE8401902U1 DE 8401902 U1 DE8401902 U1 DE 8401902U1 DE 8401902 U DE8401902 U DE 8401902U DE 8401902D U DE8401902D U DE 8401902DU DE 8401902 U1 DE8401902 U1 DE 8401902U1
- Authority
- DE
- Germany
- Prior art keywords
- guide
- sealing element
- lifting cylinders
- seals
- pneumatic
- 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
Links
- 238000007789 sealing Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000003068 static Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229920000034 Plastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- -1 or made of metallic Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000011528 polyamide (building material) Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/56—Other sealings for reciprocating rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Damping Devices (AREA)
- Sealing Devices (AREA)
Description
II· I· »II · I · »
> * · ι ι ι j> * · Ι ι ι j
III Il 1III Il 1
Führungs-Dichtungs-Element für pneumatische HubzylinderGuide sealing element for pneumatic lifting cylinders
An den Gleitstellen in pneumatischen Zylindern, wo sich Kolben und Kolbenstange entlangbewegen, sind in der Regel zbiei technisch unterschiedliche Forderungen zu erfüllen. Erstens müssen diese Teile linear geführt werden, zweitens müssen diese Teile an den Gleitstellen jeweils gegen die vorhandenen Druckdifferenzen abgedichtet werden. Figur 1 zeigt die typische Bauform eines Pneumatikzylinders. Hierbei wird die Kolbenstange (10) von der Führungsbuchse (1) geführt. Die Stangendichtung (3) verhindert das Austreten der Druckluft in den freien Raum, während der Abstreifer (5) das Mitschleppen von Schmutzpartikeln beim Einfahren der Kolbenstange verhindern soll. Als Kalben wird meistens ein einteiliges Bauteil mit Metallkern (11a), oder ein Metallkörper (11b) mit eingelegter Dichtung (13) und zusätzlichem Gleitbelag oder Führungsband (1A) verwendet. Wenn keine Luft-Endlagendämpfung vorgesehen ist, wird oft ein Dämpfungsring (9) aus Elastomere-Material als Anschlag verwendet. At the sliding points in pneumatic cylinders, where the piston and piston rod move along, are usually e.g. to meet technically different requirements. Firstly, these parts must be guided linearly, secondly, these parts must each slide against the existing pressure differences are sealed. Figure 1 shows the typical design of a pneumatic cylinder. The piston rod (10) is guided by the guide bush (1). The rod seal (3) prevents leakage the compressed air into the free space, while the scraper (5) to prevent dirt particles from being dragged along when the piston rod retracts. When calving is usually a one-piece component with a metal core (11a), or a metal body (11b) with inserted seal (13) and additional sliding coating or guide band (1A) is used. If no If air end position damping is provided, a damping ring (9) made of elastomer material is often used as a stop.
Nachteilig bei dieser Ausführung ist die große Baulänge (16), welche sich aus der hintereinander Anordnung von drei oder vit_r Einzelbauteilen ergibt; außerdem der größere Aufwand an mechanischer Arbeit zur Herstellung der Einbauräume für die Teile Nr. (1), {3) und (5), schließlich ist oft noch die Verwendung eines zusätzlichen Deckels (17) erforderlich.The disadvantage of this design is the large overall length (16), which results from the arrangement of three or vit_r results in individual components; also the greater effort mechanical work to produce the installation spaces for the Part no. (1), {3) and (5), finally, there is often still the usage an additional cover (17) is required.
Aus vorgenannten Gründen hat die Industrie Elemente entwikkelt die aus Elastomeren bestehen und zwei oder drei Aufgaben, nämlich die der Teile Nr. (1), (3) und (5) gleichzeitig übernehmen, eine geringere Baulänge haben und leicht einzubauen sind. Dies ist der Stand der Technik.For the aforementioned reasons, the industry has developed elements which consist of elastomers and two or three tasks, namely that of parts No. (1), (3) and (5) at the same time take over, have a shorter overall length and are easy to install. This is the state of the art.
Es werden an die Funktion pneumatischer Hubzylinder häufig Betriebsbedingungen gestellt, welche mit den vorgenannten Elementen nicht gelöst werden können, u/ie zum Beispiel hohe Temperaturen, Öl- und Fettfreiheit, oder Kernstrahlung. Das neue Führungs-Dichtungs-Element, in Figur 2 beispielhaft und vereinfacht dargestellt, besitzt alle Vorzüge der vorerwähnten Sauteile und ist außerdem durch die mögliche Variation von Werkstoffen für das Führungsteil (1) und von FormThe function of pneumatic lifting cylinders is often subject to operating conditions that can not be solved with the aforementioned elements, for example high temperatures, freedom from oil and grease, or nuclear radiation. The new guide-sealing element, shown as an example and simplified in FIG. 2, has all the advantages of the aforementioned saw parts and is also due to the possible variation of materials for the guide part (1) and shape
und Werkstoff für das Dichtungsteil (3) geeignet einer großen Zahl von besonderen Betriebsbedingungen, bei gleichern Einbauraum, angepaßt zu werden.and material for the sealing part (3) suitable for a large number of special operating conditions, with the same Installation space to be adapted.
Das Führungs-Dichtungs-Element nach Figur 2 besteht aus einem Führungskörper (1), welcher vorzugsweise aus einem Plastomere (zum Beispiel Polyamid, PTFE) mit oder ohne Füllstoffe, oder aus metallischem, keramischem, oder künstlichem (Kunstkohle) Werkstoff gefertigt ist, sowie den statischen (2) und dynamischen (3) Dichtungen. Für die statischen und dynamischen Dichtungen sind Ringnuten im Führungskörper vorgesehen, welche zueinander versetzt am Außen- und Innendurchmesser angeordnet sind. Die dem Zylinderinneren zugewandte Stirnseite ist an der Lauffläche (4) abgerundet, während die nach außen angeordnete Stirnseite eine Abstreifkante (5) besitzt. Die Dichtungen (2) und (3) sind aus Elastomere und Plastomere unterschiedlicher Eigenschaften und Formen wählbar.The guide-sealing element according to FIG. 2 consists of a guide body (1), which is preferably made of a plastomer (e.g. polyamide, PTFE) with or without fillers, or made of metallic, ceramic, or artificial (artificial carbon) Material is made, as well as the static (2) and dynamic (3) seals. For the static and dynamic Seals are provided in the guide body with annular grooves which are offset from one another on the outer and inner diameter are. The end face facing the inside of the cylinder is rounded on the running surface (4), while the one facing outwards Front side has a scraper edge (5). The seals (2) and (3) elastomers and plastomers of different properties and shapes can be selected.
Sinnvoll für Zylinder mit geringen Ringräumen, wie beispielsweise bei Teleskopzylindern und in Figur 2 dargestellt, kann das Führungs-Dichtungs-Element auch als Kolbenelement Verwendung finden, mit Führungsteil (11), statischer Dichtung (12) und dynamischer Kolbendichtung (12).It can be useful for cylinders with small annular spaces, such as, for example, in the case of telescopic cylinders and shown in FIG the guide-sealing element can also be used as a piston element, with guide part (11), static seal (12) and dynamic piston seal (12).
Ein weiterer Vorteil der Führungs-Dichtungs-Elemente besteht in der dämpfenden Wirkung, welche das Führungsteil durch die beschriebene Bauform in Verbindung mit der geeigneten Werkstoffauswahl aufweist. Durch die Kraft, welche beim Kolbenanschlag gegen die Stirnfläche (6) wirkt, verformt sich das Führungsteil im Bereich des Lagerspiels wie in Figur 3 gezeigt. Durch diese Verformungsarbeit, - Maß (g) - wird der Stoß gemildert und macht in den meisten Fällen einen zusätzlichen Dämpfungsring überflüssig.There is another advantage of the guide-sealing elements in the damping effect that the guide part has due to the design described in conjunction with the appropriate choice of material. The force that acts against the end face (6) when the piston hits the piston deforms it Guide part in the area of the bearing play as shown in FIG. This work of deformation - dimension (g) - reduces the impact and in most cases makes an additional one No need for damping ring.
Flit dem neuen Führungs-Dichtungs-Element kann außerdem das Führungsspiel der Stangenlagerung eingestellt, oder nachgestellt werden. Dies geschieht beispielsweise mit einem Gewindering (8).Flit, the new guide-sealing element, can also do that Guide play of the rod bearing can be set or readjusted. This is done, for example, with a threaded ring (8).
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE8401902U1 true DE8401902U1 (en) | 1984-04-26 |
Family
ID=1333090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8401902U Expired DE8401902U1 (en) | Guide sealing element |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE8401902U1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3447273A1 (en) * | 1984-12-22 | 1986-06-26 | Trepel Ag, 6200 Wiesbaden | Hydraulic working cylinder |
EP0342438A2 (en) * | 1988-05-19 | 1989-11-23 | Aleksandra Zaloker | Sealing guide for a piston rod and use of the same |
DE4202746A1 (en) * | 1992-01-31 | 1993-08-05 | Schaeffler Waelzlager Kg | Recirculating ball unit for linear bearings |
DE4204184A1 (en) * | 1992-02-13 | 1993-08-19 | Teves Gmbh Alfred | Slide bearing seal for high temperature ranges - has two seals spaced in succession but acting in same direction for different temperature ranges, and sealing surfaces connected to chamber by non=return valve |
DE102021108874A1 (en) | 2021-04-09 | 2022-10-13 | Henning Fuhrmann | Pneumatic cylinder unit and transport device equipped therewith in an irradiation system |
-
0
- DE DE8401902U patent/DE8401902U1/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3447273A1 (en) * | 1984-12-22 | 1986-06-26 | Trepel Ag, 6200 Wiesbaden | Hydraulic working cylinder |
EP0342438A2 (en) * | 1988-05-19 | 1989-11-23 | Aleksandra Zaloker | Sealing guide for a piston rod and use of the same |
EP0342438A3 (en) * | 1988-05-19 | 1990-11-07 | Aleksandra Zaloker | Sealing guide for a piston rod and use of the same |
DE4202746A1 (en) * | 1992-01-31 | 1993-08-05 | Schaeffler Waelzlager Kg | Recirculating ball unit for linear bearings |
DE4204184A1 (en) * | 1992-02-13 | 1993-08-19 | Teves Gmbh Alfred | Slide bearing seal for high temperature ranges - has two seals spaced in succession but acting in same direction for different temperature ranges, and sealing surfaces connected to chamber by non=return valve |
DE102021108874A1 (en) | 2021-04-09 | 2022-10-13 | Henning Fuhrmann | Pneumatic cylinder unit and transport device equipped therewith in an irradiation system |
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