EP2363610A1 - Pneumatic adjuster - Google Patents

Pneumatic adjuster Download PDF

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Publication number
EP2363610A1
EP2363610A1 EP11001439A EP11001439A EP2363610A1 EP 2363610 A1 EP2363610 A1 EP 2363610A1 EP 11001439 A EP11001439 A EP 11001439A EP 11001439 A EP11001439 A EP 11001439A EP 2363610 A1 EP2363610 A1 EP 2363610A1
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EP
European Patent Office
Prior art keywords
fibers
membrane
elastomer
housing
working space
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.)
Withdrawn
Application number
EP11001439A
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German (de)
French (fr)
Inventor
Thomas BÄCHNER
Markus Johnen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMK Systeme Metall Kunststoff GmbH and Co KG
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SMK Systeme Metall Kunststoff GmbH and Co KG
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Application filed by SMK Systeme Metall Kunststoff GmbH and Co KG filed Critical SMK Systeme Metall Kunststoff GmbH and Co KG
Publication of EP2363610A1 publication Critical patent/EP2363610A1/en
Withdrawn legal-status Critical Current

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    • 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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Definitions

  • the invention relates to a pneumatic actuator with the features specified in the preamble of claim 1, as he is for example from the EP 1 701 015 A2 is known.
  • pneumatic actuators are also referred to as pneumatic actuators and used in particular in the exhaust system of motor vehicles, for example, for actuating exhaust gas recirculation valves and exhaust valves or as a loader pressure regulator for exhaust gas turbocharger.
  • the object of the invention is to show a way how the life of an actuator can be increased.
  • the object of improved life is achieved by using a fiber-reinforced membrane made by overmolding the fibers.
  • a fiber-reinforced membrane made by overmolding the fibers.
  • the elastomer is preferably a silicone elastomer, in particular a silicone rubber.
  • Precursor material for silicone elastomers can be cast well, for example, as a liquid silicone and has advantageous wetting properties.
  • Liquid silicones are often referred to as LSR silicone.
  • Particularly suitable precursors are organosiloxanes having vinyl and / or hydroxyl groups, for example dimethylsiloxanes.
  • HTV silicone elastomers i. H. Silikoneleastomere which are produced by high temperature crosslinking precursor material.
  • crosslinking temperatures of 100 ° C. and more, in particular 150 ° C. to 200 ° C., are suitable. Silicone elastomers which have been crosslinked at such high temperatures have a particularly high temperature resistance and are therefore more suitable than RTV (room temperature crosslinked) silicone elastomers.
  • the crosslinking reaction can be supported with peroxides, which is advantageous in particular in radical crosslinking reactions. However, the crosslinking reaction can also proceed as an addition reaction.
  • the fibers can be disordered, for example, felted, placed in a mold and molded around.
  • the fibers form a net, in particular a woven fabric.
  • a net can not only be formed by interwoven fibers but also, for example, as a knitted fabric.
  • a fabric By a fabric, however, a better reinforcement of the membrane is generally achieved.
  • the overmoulded fibers are preferably plastic fibers.
  • plastic fibers For example, polyaramid fibers are well suited. However, it is also possible to use fibers of other materials to reinforce the membrane.
  • the pneumatic actuator shown is a charge pressure regulator for exhaust gas turbochargers of internal combustion engines for automobiles.
  • the boost pressure regulator has a two-part housing, which has a bottom 1 and a cover 2. In the housing is located between the bottom 1 and 2 cover a clamped membrane 3, which divides a working space in the housing, which is connectable to a positive or negative pressure source. In the illustrated embodiment, the working space between the diaphragm 3 and the bottom 1.
  • the bottom 1 has a connection opening, not shown in the illustrated sectional view for connecting an overpressure or vacuum source.
  • the membrane 3 is pressed by a arranged in the housing spring 4 to the bottom 1.
  • the spring 4 is loaded on a diaphragm plate 5 on which the membrane 3 rests. In principle, however, it is also possible that the spring 4 presses against the diaphragm 3 without the interposition of a diaphragm plate.
  • a rod 6, which is movable in its longitudinal direction and in case of an increase or decrease of the pressure prevailing in the working space of a resulting movement of the membrane 3 follows.
  • the rod 6 is with the Membrane 3 coupled. In the illustrated embodiment, this is achieved in that the rod 6 is attached at one end to the diaphragm plate 5. In an expansion of the working space, the rod 6 is therefore displaced by the membrane 3, so that the rod 6 protrudes further from an opening in the cover 2 of the housing. With a drop in pressure in the working space, the diaphragm 3 is moved by the spring 4 to the bottom 1 of the housing, wherein the rod 6 is pulled by the diaphragm plate 5 deeper into the housing.
  • a magnetic position sensor 7 may be attached on the membrane 3.
  • a magnetic field sensor 8 attached to the housing, for example a Hall sensor, a displacement of the position sensor 7 can be detected and thus always the instantaneous position of the position sensor 7 can be determined.
  • the position sensor 7 is attached to the membrane 3, one obtains in this way, the position of the diaphragm 3 and the rod 6 following her.
  • the membrane 3 is in FIG. 2 schematically shown in a sectional view.
  • the membrane 3 is a composite between fibers 3a and an elastomer 3b produced by overmolding of fibers 3a.
  • the fibers 3a are interwoven with each other, thus forming a fabric.
  • the fibers 3a are made of plastic, for example of polyaramid.
  • the elastomer 3b is a silicone elastomer.
  • a fabric consisting of fibers 3a is placed in a mold and then encapsulated with precursor material.
  • An elastomer 3b is then produced from the precursor material by crosslinking molecules of the precursor material.
  • As Recursormaterial liquid silicone can be used.
  • a crosslinking reaction of precursor molecules is effected.
  • vinyl and / or hydroxyl groups of the precursor molecules react with one another so that the precursor molecules crosslink with one another.
  • the crosslinking reaction can be assisted with admixed peroxides or a catalyst, for example platinum.
  • the distance of the fibers 3a from each other is in FIG. 2 not shown to scale. Fiber thicknesses of, for example, 0.1 mm to 0.5 mm are advantageous.
  • the fibers 3a form in the illustrated embodiment, a network, parallel to each other running fibers 3a thus each have a distance from each other. This distance is preferably between 0.2 mm to 1 mm.
  • the membrane 3 contains only one fabric layer. However, it is also possible for a plurality of fabric layers to be placed on one another in a casting mold and to be overmolded with a precursor material for producing the membrane 3.

Abstract

The pneumatic actuator has a housing and a membrane (3), which divides a working chamber in the housing. The working chamber is connected to an over-or under-pressure source. The membrane is an interconnection between fibers formed by insert molding of fibers and is an elastomer, where the elastomer is a silicon elastomer. The fibers are made of plastic, particularly from polyaramide. An independent claim is also included for a method for manufacturing a pneumatic actuator.

Description

Beschreibungdescription

Die Erfindung geht aus von einem pneumatischen Steller mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen, wie er beispielsweise ist aus der EP 1 701 015 A2 bekannt ist. Solche pneumatischen Steller werden auch als pneumatische Aktoren bezeichnet und insbesondere im Abgasstrang von Kraftfahrzeugen verwendet, beispielsweise zum Betätigen von Abgasrückführventilen und Abgasklappen oder als Laderdruckregler für Abgasturbolader.The invention relates to a pneumatic actuator with the features specified in the preamble of claim 1, as he is for example from the EP 1 701 015 A2 is known. Such pneumatic actuators are also referred to as pneumatic actuators and used in particular in the exhaust system of motor vehicles, for example, for actuating exhaust gas recirculation valves and exhaust valves or as a loader pressure regulator for exhaust gas turbocharger.

Im Abgasstrang eines Kraftfahrzeugs ist die Membran einer erheblichen Temperaturbelastung und einer hohen mechanischen Beanspruchung in einer chemisch aggressiven Umgebung ausgesetzt. Aufgabe der Erfindung ist es, einen Weg aufzuzeigen, wie die Lebensdauer eines Stellers erhöht werden kann.In the exhaust system of a motor vehicle, the membrane is exposed to considerable thermal stress and high mechanical stress in a chemically aggressive environment. The object of the invention is to show a way how the life of an actuator can be increased.

Diese Aufgabe wird durch einen pneumatischen Steller mit den im Anspruch 1 angegebenen Merkmalen sowie durch ein Verfahren gemäß Anspruch 6 gelöst. Die Erfindung betrifft ferner die Verwendung einer Membran gemäß Anspruch 10 in einem pneumatischen Steller. Vorteilhafte Weiterbildungen sind Gegenstand von Unteransprüchen.This object is achieved by a pneumatic actuator with the features specified in claim 1 and by a method according to claim 6. The invention further relates to the use of a membrane according to claim 10 in a pneumatic actuator. Advantageous developments are the subject of dependent claims.

Erfindungsgemäß wird die Aufgabe einer verbesserten Lebensdauer durch Verwendung einer faserverstärkten Membran gelöst, die durch Umspritzen der Fasern hergestellt ist. Durch das Umspritzen von Fasern lässt sich ein Verbund zwischen Fasern und Elastomer erreichen, der zu einer wesentlich belastbareren Membran führt, als dies durch Aufkleben oder Aufpressen eines Gewebes auf eine Membran möglich ist. Beim Umspitzen kann nämlich ein dann noch flüssiges Elastomermaterial die Fasern benetzen und in Zwischenräume zwischen den Fasern eindringen. Dies ist besonders gut möglich, indem sich das Elastomer erst nach dem Umspritzen der Fasern durch Vernetzen der Moleküle eines Präcursormaterials bildet.According to the invention, the object of improved life is achieved by using a fiber-reinforced membrane made by overmolding the fibers. By overmolding fibers, it is possible to achieve a bond between fibers and elastomer, which leads to a membrane that is much more resilient than is possible by sticking or pressing a tissue onto a membrane. When rephrasing namely a still liquid elastomer material can wet the fibers and penetrate into spaces between the fibers. This is particularly well possible because the elastomer forms only after encapsulation of the fibers by crosslinking the molecules of a precursor material.

Bevorzugt ist das Elastomer ein Silikonelastomer, insbesondere ein Silkonkautschuk. Präkursormaterial für Silikonelastomere lässt sich beispielsweise als Flüssigsilikon gut gießen und hat vorteilhafte Benetzungseigenschaften. Flüssigsilikone werden oft auch als LSR-Silikon bezeichnet. Als Präcursormaterial sind insbesondere Organosiloxane mit Vinyl- und/oder Hydroxylgruppen geeignet, beispielsweise Dimethylsiloxane.The elastomer is preferably a silicone elastomer, in particular a silicone rubber. Precursor material for silicone elastomers can be cast well, for example, as a liquid silicone and has advantageous wetting properties. Liquid silicones are often referred to as LSR silicone. Particularly suitable precursors are organosiloxanes having vinyl and / or hydroxyl groups, for example dimethylsiloxanes.

Besonders bevorzugt sind HTV-Silikonelastomere, d. h. Silikoneleastomere die durch Hochtemperaturvernetzung von Präcursormaterial erzeugt werden. Geeignet sind insbesondere Vernetzungstemperaturen von 100°C und mehr, insbesondere 150°C bis 200°C. Silikonelastomere, die bei derart hohen Temperaturen vernetzt wurden, haben eine besonders hohe Temperaturbeständigkeit und sind deshalb besser geeignet als RTV (raumtemperaturvernetzte) Silikonelastomere. Die Vernetzungsreaktion kann mit Peroxiden unterstützt werden, was insbesondere bei radikalischen Vernetzungsreaktionen vorteilhaft ist. Die Vernetzungsreaktion kann aber auch als Additionsreaktion ablaufen.Particularly preferred are HTV silicone elastomers, i. H. Silikoneleastomere which are produced by high temperature crosslinking precursor material. In particular, crosslinking temperatures of 100 ° C. and more, in particular 150 ° C. to 200 ° C., are suitable. Silicone elastomers which have been crosslinked at such high temperatures have a particularly high temperature resistance and are therefore more suitable than RTV (room temperature crosslinked) silicone elastomers. The crosslinking reaction can be supported with peroxides, which is advantageous in particular in radical crosslinking reactions. However, the crosslinking reaction can also proceed as an addition reaction.

Die Fasern können ungeordnet, beispielsweise verfilzt, in eine Gussform eingelegt und umspritzt werden. Bevorzugt bilden die Fasern aber ein Netz, insbesondere ein Gewebe. Prinzipiell kann ein Netz nicht nur von miteinander verwobenen Fasern gebildet werden, sondern beispielsweise auch als Gewirk. Durch ein Gewebe wird aber im Allgemeinen eine bessere Verstärkung der Membran erzielt.The fibers can be disordered, for example, felted, placed in a mold and molded around. Preferably, however, the fibers form a net, in particular a woven fabric. In principle, a net can not only be formed by interwoven fibers but also, for example, as a knitted fabric. By a fabric, however, a better reinforcement of the membrane is generally achieved.

Die umspritzen Fasern sind bevorzugt Kunststofffasern. Gut geeignet sind beispielsweise Polyaramidfasern. Es können aber auch Fasern aus anderen Materialen zur Verstärkung der Membran verwendet werden.The overmoulded fibers are preferably plastic fibers. For example, polyaramid fibers are well suited. However, it is also possible to use fibers of other materials to reinforce the membrane.

Weitere Einzelheiten und Vorteile der Erfindung werden an einem Ausführungsbeispiel unter Bezugnahme auf die beigefügten Zeichnungen erläutert. Es zeigen:

Figur 1
ein Ausführungsbeispiel eines erfindungsgemäßen Stellers in einer Schnittansicht; und
Figur 2
eine Detailansicht der Membran des Stellers.
Further details and advantages of the invention will be explained with reference to an embodiment with reference to the accompanying drawings. Show it:
FIG. 1
an embodiment of an actuator according to the invention in a sectional view; and
FIG. 2
a detailed view of the diaphragm of the actuator.

Bei dem in Figur 1 dargestellten pneumatischen Steller handelt es sich um einen Ladedruckregler für Abgasturbolader von Brennkraftmotoren für Automobile. Der Ladedruckregler hat ein zweiteiliges Gehäuse, das einen Boden 1 und einen Deckel 2 aufweist. In dem Gehäuse befindet sich zwischen Boden 1 und Deckel 2 eine eingespannte Membran 3, die in dem Gehäuse einen Arbeitsraum abteilt, der an eine Über- oder Unterdruckquelle anschließbar ist. Bei dem dargestellten Ausführungsbeispiel befindet sich der Arbeitsraum zwischen der Membran 3 und dem Boden 1. Der Boden 1 hat eine in der dargestellten Schnittansicht nicht gezeigte Anschlussöffnung zum Anschließen einer Über- oder Unterdruckquelle.At the in FIG. 1 The pneumatic actuator shown is a charge pressure regulator for exhaust gas turbochargers of internal combustion engines for automobiles. The boost pressure regulator has a two-part housing, which has a bottom 1 and a cover 2. In the housing is located between the bottom 1 and 2 cover a clamped membrane 3, which divides a working space in the housing, which is connectable to a positive or negative pressure source. In the illustrated embodiment, the working space between the diaphragm 3 and the bottom 1. The bottom 1 has a connection opening, not shown in the illustrated sectional view for connecting an overpressure or vacuum source.

Die Membran 3 wird durch eine in dem Gehäuse angeordnete Feder 4 zu dem Boden 1 hingedrückt. Bei dem dargestellten Ausführungsbeispiel lastet die Feder 4 auf einem Membranteller 5, an dem die Membran 3 anliegt. Prinzipiell ist es jedoch auch möglich, dass die Feder 4 ohne Zwischenlage eines Membrantellers gegen die Membran 3 drückt.The membrane 3 is pressed by a arranged in the housing spring 4 to the bottom 1. In the illustrated embodiment, the spring 4 is loaded on a diaphragm plate 5 on which the membrane 3 rests. In principle, however, it is also possible that the spring 4 presses against the diaphragm 3 without the interposition of a diaphragm plate.

Aus dem Gehäuse ragt eine Stange 6 heraus, die in ihrer Längsrichtung beweglich ist und bei einen Anstieg oder Abfall des in dem Arbeitsraum herrschenden Drucks einer dadurch bewirkten Bewegung der Membran 3 folgt. Die Stange 6 ist mit der Membran 3 gekoppelt. Bei dem dargestellten Ausführungsbeispiel wird dies dadurch erreicht, dass die Stange 6 mit einem Ende an dem Membranteller 5 befestigt ist. Bei einer Ausdehnung des Arbeitsraums wird die Stange 6 deshalb von der Membran 3 verschoben, so dass die Stange 6 weiter aus einer Öffnung in dem Deckel 2 des Gehäuses herausragt. Bei einem Abfall des Drucks in dem Arbeitsraum wird die Membran 3 von der Feder 4 zu dem Boden 1 des Gehäuses hinbewegt, wobei die Stange 6 von dem Membranteller 5 tiefer in das Gehäuse hereingezogen wird.From the housing protrudes a rod 6, which is movable in its longitudinal direction and in case of an increase or decrease of the pressure prevailing in the working space of a resulting movement of the membrane 3 follows. The rod 6 is with the Membrane 3 coupled. In the illustrated embodiment, this is achieved in that the rod 6 is attached at one end to the diaphragm plate 5. In an expansion of the working space, the rod 6 is therefore displaced by the membrane 3, so that the rod 6 protrudes further from an opening in the cover 2 of the housing. With a drop in pressure in the working space, the diaphragm 3 is moved by the spring 4 to the bottom 1 of the housing, wherein the rod 6 is pulled by the diaphragm plate 5 deeper into the housing.

An der Membran 3 kann ein magnetischer Positionsgeber 7 befestigt sein. Mittels eines an dem Gehäuse befestigten Magnetfeldsensors 8, beispielsweise einem Hall-Sensor, kann eine Verschiebung des Positionsgebers 7 detektiert und somit stets die momentane Position des Positionsgebers 7 ermittelt werden. Indem der Positionsgeber 7 an der Membran 3 befestigt ist, erhält man auf diese Weise auch die Position der Membran 3 sowie der ihr folgenden Stange 6.On the membrane 3, a magnetic position sensor 7 may be attached. By means of a magnetic field sensor 8 attached to the housing, for example a Hall sensor, a displacement of the position sensor 7 can be detected and thus always the instantaneous position of the position sensor 7 can be determined. By the position sensor 7 is attached to the membrane 3, one obtains in this way, the position of the diaphragm 3 and the rod 6 following her.

Die Membran 3 ist in Figur 2 schematisch in einer Schnittansicht dargestellt. Die Membran 3 ist ein durch Umspritzen von Fasern 3a erzeugter Verbund zwischen Fasern 3a und einem Elastomer 3b. Bei dem dargestellten Ausführungsbeispiel sind die Fasern 3a miteinander verwoben, bilden also ein Gewebe.The membrane 3 is in FIG. 2 schematically shown in a sectional view. The membrane 3 is a composite between fibers 3a and an elastomer 3b produced by overmolding of fibers 3a. In the illustrated embodiment, the fibers 3a are interwoven with each other, thus forming a fabric.

Die Fasern 3a sind aus Kunststoff, beispielsweise aus Polyaramid. Das Elastomer 3b ist ein Silikonelastomer.The fibers 3a are made of plastic, for example of polyaramid. The elastomer 3b is a silicone elastomer.

Zur Herstellung der Membran 3 wird ein aus Fasern 3a bestehendes Gewebe in eine Gussform eingelegt und anschließend mit Präcursormaterial umspritzt. Aus dem Präcursormaterial wird dann durch Vernetzen von Molekülen des Präcursormaterials ein Elastomer 3b erzeugt. Als Präcursormaterial kann flüssiges Silikon verwendet werden. Durch Erhitzen auf eine erhöhte Temperatur von beispielsweise 160°C oder mehr wird eine Vernetzungsreaktion von Präcursormolekülen bewirkt. Bei der Vernetzungsreaktion reagieren Vinyl- und/oder Hydroxylgruppen der Präcursormoleküle miteinander, so dass sich die Präcursormoleküle miteinander vernetzen. Die Vernetzungsreaktion kann mit zugemischten Peroxiden oder einem Katalysator, beispielsweise Platin, unterstützt werden.For the production of the membrane 3, a fabric consisting of fibers 3a is placed in a mold and then encapsulated with precursor material. An elastomer 3b is then produced from the precursor material by crosslinking molecules of the precursor material. As Präcursormaterial liquid silicone can be used. By heating to an elevated temperature of, for example, 160 ° C or more, a crosslinking reaction of precursor molecules is effected. In the crosslinking reaction, vinyl and / or hydroxyl groups of the precursor molecules react with one another so that the precursor molecules crosslink with one another. The crosslinking reaction can be assisted with admixed peroxides or a catalyst, for example platinum.

Der Abstand der Fasern 3a voneinander ist in Figur 2 nicht maßstäblich dargestellt. Vorteilhaft sind Faserstärken von beispielsweise 0,1 mm bis 0,5 mm. Die Fasern 3a bilden bei dem dargestellten Ausführungsbeispiel ein Netz, zueinander parallel verlaufende Fasern 3a haben also jeweils einen Abstand voneinander. Bevorzugt beträgt dieser Abstand zwischen 0,2 mm bis 1 mm.The distance of the fibers 3a from each other is in FIG. 2 not shown to scale. Fiber thicknesses of, for example, 0.1 mm to 0.5 mm are advantageous. The fibers 3a form in the illustrated embodiment, a network, parallel to each other running fibers 3a thus each have a distance from each other. This distance is preferably between 0.2 mm to 1 mm.

Bei dem dargestellten Ausführungsbeispiel enthält die Membran 3 nur eine Gewebelage. Es können aber auch mehrere Gewebelagen aufeinander in eine Gussform eingelegt und zum Herstellen der Membran 3 mit einem Präcursormaterial umspritzt werden.In the illustrated embodiment, the membrane 3 contains only one fabric layer. However, it is also possible for a plurality of fabric layers to be placed on one another in a casting mold and to be overmolded with a precursor material for producing the membrane 3.

Bezugszahlenreference numerals

11
Bodenground
22
Deckelcover
33
Membranmembrane
3a3a
Fasernfibers
3b3b
Elastomerelastomer
44
Federfeather
55
Membrantellerdiaphragm plate
66
Stangepole
77
Positionsgeberlocator
88th
Magnetfeldsensormagnetic field sensor

Claims (10)

Pneumatischer Steller mit
einem Gehäuse (1, 2),
einer Membran (3), die in dem Gehäuse (1, 2) einen Arbeitsraum abteilt, der an eine Über- oder Unterdruckquelle anschließbar ist,
einer aus dem Gehäuse (1, 2) herausragenden Stange (6), die in ihrer Längsrichtung beweglich ist und einer durch einen Anstieg oder Abfall des in dem Arbeitsraum herrschenden Drucks bewirkten Bewegung folgt,
dadurch gekennzeichnet, dass
die Membran (3) ein durch Umspritzen von Fasern (3a) erzeugter Verbund zwischen Fasern (3a) und einem Elastomer (3b) ist.Pneumatic actuator with
a housing (1, 2),
a membrane (3) which divides a working space in the housing (1, 2), which can be connected to a positive or negative pressure source,
a rod (6) protruding from the housing (1, 2), which is movable in its longitudinal direction and follows a movement caused by an increase or decrease in the pressure prevailing in the working space,
characterized in that
the membrane (3) is a composite between fibers (3a) and an elastomer (3b) produced by overmolding of fibers (3a). Steller nach Anspruch 1, dadurch gekennzeichnet, dass die Fasern (3a) ein Gewebe bilden.An actuator according to claim 1, characterized in that the fibers (3a) form a tissue. Steller nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Elastomer (3b) ein Silikonelastomer ist.Controller according to one of the preceding claims, characterized in that the elastomer (3b) is a silicone elastomer. Steller nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Elastomer (3b) ein Kautschuk, insbesondere ein Silikonkautschuk, ist.Controller according to one of the preceding claims, characterized in that the elastomer (3b) is a rubber, in particular a silicone rubber. Steller nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das die Fasern (3a) aus Kunststoff, vorzugsweise aus Polyaramid, sind.Controller according to one of the preceding claims, characterized in that the fibers (3a) are made of plastic, preferably of polyaramid. Verfahren zum Herstellen eines pneumatischen Stellers, wobei in einem Gehäuse (1, 2) mit einer Membran (3) ein Arbeitsraum abgeteilt wird, der an eine Über- oder Unterdruckquelle anschließbar ist, und eine Stange (6) an die Membran (3) gekoppelt wird, die in ihrer Längsrichtung beweglich ist und einer durch einen Anstieg oder Abfall des in dem Arbeitsraum herrschenden Drucks bewirkten Bewegung folgt, dadurch gekennzeichnet, dass zur Herstellung der Membran (3) Fasern (3a) in eine Spritzform eingelegt werden, danach mit Präcursormaterial umspritzt werden und aus dem Präcursormaterial durch Vernetzen von Molekülen des Präkursormaterials ein Elastomer (3b) erzeugt wird.A method for producing a pneumatic actuator, wherein in a housing (1, 2) with a membrane (3) a working space is partitioned, which can be connected to a positive or negative pressure source, and a rod (6) coupled to the membrane (3) is, which is movable in its longitudinal direction and followed by an increase or decrease of the pressure prevailing in the working space movement follows, characterized in that for the production of the membrane (3) fibers (3a) are inserted into an injection mold, then encapsulated with Präcursormaterial and an elastomer (3b) is produced from the precursor material by crosslinking molecules of the precursor material. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass das Präcursormaterial flüssiges Silikon ist.A method according to claim 6, characterized in that the Präcursormaterial is liquid silicone. Verfahren nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass das Elastomer (3b) durch Vernetzen von Molekülen des Präkursormaterials bei einer Temperatur von mindestens 100°C, vorzugsweise 150°C, durchgeführt wird.Method according to one of claims 6 or 7, characterized in that the elastomer (3b) by crosslinking of molecules of the precursor material at a temperature of at least 100 ° C, preferably 150 ° C, is performed. Verfahren nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Fasern (3a) als Netz in die Form eingelegt werden.Method according to one of claims 6 to 8, characterized in that the fibers (3a) are inserted as a net in the mold. Verwendung einer elastomeren Membran (3), die durch Umspritzen von Fasern (3a) hergestellt wurde, in einem pneumatischen Steller.Use of an elastomeric membrane (3) made by overmolding fibers (3a) in a pneumatic actuator.
EP11001439A 2010-03-04 2011-02-22 Pneumatic adjuster Withdrawn EP2363610A1 (en)

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CN102562721A (en) * 2012-03-14 2012-07-11 北京岳能科技有限公司 Pneumatic long-stroke actuating mechanism and control method thereof
CN107208667A (en) * 2015-03-31 2017-09-26 株式会社Ihi Diaphragm actuator
EP3258143A1 (en) * 2016-06-17 2017-12-20 Hamilton Sundstrand Corporation Diaphragm for pneumatic controller

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US8991173B2 (en) * 2012-03-06 2015-03-31 Honeywell International Inc. Linear actuator for a variable-geometry member of a turbocharger, and a turbocharger incorporating same

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