EP0715083B1 - Rodless fluid cylinder - Google Patents

Rodless fluid cylinder Download PDF

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Publication number
EP0715083B1
EP0715083B1 EP95890207A EP95890207A EP0715083B1 EP 0715083 B1 EP0715083 B1 EP 0715083B1 EP 95890207 A EP95890207 A EP 95890207A EP 95890207 A EP95890207 A EP 95890207A EP 0715083 B1 EP0715083 B1 EP 0715083B1
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EP
European Patent Office
Prior art keywords
cylinder
damping
longitudinal slot
fluid
cylinder housing
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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.)
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EP95890207A
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German (de)
French (fr)
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EP0715083A3 (en
EP0715083A2 (en
Inventor
Volker Drittel
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Hygrama AG
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Hygrama AG
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Publication of EP0715083A2 publication Critical patent/EP0715083A2/en
Publication of EP0715083A3 publication Critical patent/EP0715083A3/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/082Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

  • the invention relates to a rodless pressure medium cylinder with a cylinder housing that with a along its length continuous longitudinal slot is provided and a cylindrical interior has, in which a drive piston is arranged to be longitudinally displaceable is a side approach for power output through the longitudinal slot is guided to the outside, and with the cylindrical interior of the Cylinder housing at the ends of the cylinder covers the outside of which is a connection for the supply and discharge of the drive piston actuating pressure medium is provided, the longitudinal slot from an interior provided inside the cylinder housing Sealing tape is sealable, which is only in the area of the approach of the Longitudinal slot lifted and through a guide channel in the drive piston is passed through, and possibly by an additional external Sealing tape is completed on the outside of the Cylinder housing over the longitudinal slot at its ends through by the Cylinder caps separate clamps is attached.
  • a pressure medium cylinder of this type is from US 5,245,910 A. known.
  • the outer sealing tape that has the longitudinal slot on the outside covers the cylinder housing is in this known version both ends by a separate one from the cylinder covers Anchored clamping piece, which is attached to the cylinder housing with two screws is and has a threaded bore for connecting a Pressure fluid line is determined.
  • the threaded hole leads into the space between the outer and inner sealing tape that up to passes through the lids, where between that holding the outer sealing tape Clamp and the inner sealing tape in the longitudinal slot a seal is inserted.
  • the longitudinal slot is sealed so that it a vacuum is possible in the space between the two sealing tapes or an overpressure compared to that surrounding the pressure medium cylinder Generate space.
  • Pressure medium cylinders such as pneumatic or hydraulic cylinders
  • pneumatic or hydraulic cylinders famously require for the supply of the working piston of the Cylinder actuating pressure medium air connections, which are threaded different sizes to accommodate hose fittings or are also carried out by so-called plug connections.
  • the connections are generally horizontal to the axis of the pressure cylinder starting in the end caps of the cylinder.
  • the invention has for its object the known rodless To improve cylinders of the type mentioned at the beginning, that the connections in a simple manner and without changing the cover for the supply and discharge of the pressure medium to any Sides of the cylinder provided from the cylinder covers can be.
  • the invention solves this problem in that the inner Sealing tape at each end by one of the cylinder covers separate clamping piece is anchored in or on the longitudinal slot and the two cylinder covers in different, in the plane of the cylinder cover positions rotated against each other can be attached to the cylinder housing are, and that the channels transmitting the pressure medium in the two cylinder covers in the transition area between the cylinder covers and the adjacent component of the cylinder housing rotationally symmetrical are arranged.
  • the task solution according to the invention is characterized by large Simplicity out. It may therefore be obvious when looking back appear.
  • it was not easy for the specialist recognizable because in the case of the rodless cylinders the cylinder covers, in contrast to the pressure medium cylinders with piston rods, not are rotationally symmetrical.
  • the inner sealing tape from the cylinder covers has the basic one Prerequisite created, this also twisted in other locations can be installed. It also requires that everyone Pressure medium channels and bores in the covers are rotationally symmetrical are arranged to provide the required line connections in all ensure possible installation positions of the covers.
  • the invention enables in any case, the location of the connection for the feed and Derivation of the pressure medium actuating the cylinder for each cylinder cover to be able to choose separately, so that the connections are simple Always in an easily accessible and both for assembly as well advantageous place for the subsequent operation of the cylinder can be.
  • the clamping pieces with which the sealing tapes on or in the longitudinal slot of the cylinder housing can be attached near the Ends of the cylinder housing inserted into the longitudinal slot and through it widening clamping screws by means of wedge action on the walls of the Longitudinal slot to be held.
  • the inner sealing tape that the longitudinal slot seals in the area of the pressurized cylinder space can be form-fitting, an external sealing tape that may be provided, that only covers the longitudinal slot to the outside, non-positively on the Clamps are attached. These are proportionate narrow dead area directly at the end of the cylinder housing. It is this the same area in which the airtight seal of the cylinder housing he follows.
  • the respective clamping piece braces there by means of a wedge effect against the walls of the longitudinal slot and thus ensures secure anchoring both the inner and outer sealing tape. Since that Clamping piece in the longitudinal slot is axially displaceable, the belt tension can be easily adapted to the respective requirements.
  • the Cylinder covers which are preferably polygonal, e.g. square or rectangular cross-section are formed by centrically symmetrical arranged, parallel to the axis of the cylinder housing Tension screws must be pressed against the cylinder housing. With this training it is easily possible, after loosening the lag screws both cylinder lids independently of each other at an angle of 90 ° to rotate in its plane, so that the connection for the Pressure fluid can be provided in four different positions.
  • This version has the further advantage that it does not make any major changes the previous design of the rodless cylinder conditionally.
  • cylinder cover on a cylinder surface of the cylinder housing centered and freely rotatable coaxial to the cylinder surface. It is then possible, the two cylinder covers with the connections for the pressure medium in any desired position.
  • this embodiment provides that the cylinder cover on the cylinder housing by holding frames which engage them and can be rotated relative to them are attached to which tie bolts attack the cylinder covers press against the cylinder housing.
  • this can be advantageous Way also applied to a rodless pressure medium cylinder be the one with end position damping for the drive piston is provided.
  • the end position damping exists as in the known versions off at the ends of the cylinder housing in the axial direction in these protruding damping pins with a central channel for and deriving the pressure medium.
  • the damping pins act with damping cylinders in the end faces of the drive piston, which close the central channel when a damping pin penetrates, with at least one damping channel on each side of the damping pin is provided, which is adjustable via a damping screw Throttle opens into the pressure medium connection.
  • a connecting channel is arranged which is rotationally symmetrical in the cylinder cover runs, preferably the central bore concentrically surrounds.
  • FIG. 1 shows one of them Longitudinal section through the rodless pressure medium cylinder according to the invention
  • Fig. 2 is a somewhat larger sectional view of one end of the pressure cylinder
  • Fig. 3 shows a section along the line III-III in FIG. 2
  • FIG. 2a shows a somewhat modified version compared to FIG. 2 of the cylinder housing without cylinder cover
  • Fig. 3a one too Fig. 3 analog section along the line Illa-llla in Fig. 2a
  • 4 is the end of a pressure cylinder in a slightly modified design in Axial longitudinal section shown
  • Fig. 5 shows a perspective view View of the cylinder end
  • Fig. 6 shows the cylinder end of another Embodiment in a partially sectioned side view.
  • the pressure medium cylinder 1 exists in all exemplary embodiments from a cylinder housing 2, which has a cylindrical interior 3, in which a drive piston 4 is displaceable.
  • the drive piston 4 is at its ends through seals 5 in the cylindrical interior 3rd sealed and divided into two independent and interconnected pressure chambers on both sides of the drive piston 4th
  • the cylinder housing 2 is one over its entire length continuous longitudinal slot 6 provided. This is in the area of the two Pressure chambers of the cylindrical interior 3 sealed by sealing tapes, etc. by an inner sealing tape 7 and an outer sealing tape 8, which essentially covers the longitudinal slot 6 to the outside.
  • a side extension 9 is attached according to FIG led out of the cylinder housing 2 through the longitudinal slot 6 is and ends in the embodiment with a connecting flange 10. About this connection flange 10, the driving force of the pressure cylinder 1 removed and the coupling takes place with a through the Pressure medium cylinder 1 machine part to be driven.
  • the two sealing tapes are the inner sealing tape 7 and the outer sealing tape 8, at each end of the Cylinder housing 2 by a clamping piece 11 on or in the longitudinal slot 6 attached.
  • the clamping pieces 11 are located directly on the edge of cylinder covers 12, which are attached to the cylinder housing 2 by four lag screws 13 are pressed tightly.
  • a damping pin protrudes from each cylinder cover 12 14 against the drive piston 4 in the cylindrical interior 3 of the cylinder housing 2 before.
  • a damping cylinder 15 is provided, each with the damping pin 14 cooperate.
  • These are hollow and protrude a central channel 16 with the respective connection 17 for the drive piston 4 driving pressure media in connection.
  • To the side of the Connections 17 are damping screws in the two covers 12 18 arranged to adjust the throttle of a damping device serve for cushioning.
  • the clamping pieces 11 are in essentially dead in one from the standpoint of pressurization Area between the end of the cylinder housing 2 and a seal 21, which is provided on a cylindrical projection 22, which is from the lid 12 protrudes into the cylindrical interior 3.
  • the essential structure the clamping pieces 11 can be seen from FIGS. 3 and 3a. These exist 3 each from a housing 23 and a clamping wedge 24, by means of a clamping screw 25 in a wedge-shaped recess of the housing 23 is drawn in and this against the side walls of the Longitudinal slot 6 spreads and clamps.
  • the housing 23 of the clamping pieces 11 is in each case by means of a clamping screw 25 and a nut 25a on the longitudinal slot 6 attached.
  • the inner sealing tape 7 extends up to to the ends of the cylinder housing 2 and is according to FIGS. 2 and 3 held by the bolt of the clamping screw 25 on the it is attached with an opening.
  • the end of the inner sealing tape 7 is additionally by the Nut 25a of the clamping screw 25 clamped against the longitudinal slot 6.
  • the outer sealing tape 8 is somewhat shorter than that in all examples inner sealing tape 7 and by its own holding device 11a Clamping piece 11 or clamped between this and the cylinder housing 2.
  • the basic structure of the intended damping device 4 can be seen.
  • the cylinder housing 2 is also there by means of lag screws, not shown, covers 12 on its Ends completed.
  • the lid 12 shown in includes in this case from the cover 12 separate approach 22, which in the cylindrical Interior 3 protrudes and seals it with a seal 21.
  • a projection 14 protrudes from the extension 22, which likewise with a damping cylinder, not shown shown driving piston cooperates.
  • the damping pin 14 has a central channel 16 on, which is connected to the connection 17. Parallel to the central one Channel 16 of the damping pin 14 passes through a damping channel 26 the approach 22 and connects the cylindrical interior 3 with a Connecting channel 27 in the cover 12.
  • This connecting channel 27 runs in the cover 12 rotationally symmetrical and leads over a in the cover 12 provided connection bore 28 to a throttle 29, which by means of Damping screw 18 can be adjusted.
  • the throttle 29 stands with the connection 17 in connection.
  • the one in Fig. 5 illustrated cover 12 is rectangular and with the help of four parallel, centrally symmetrically arranged and only indicated Tension screws 13 held on the cylinder housing 2.
  • the connection 17 for the supply and discharge of the pressure cylinder 1 actuating Pressure medium and the damping screw 18 for the end position damping are located on the front side of the lid 12.
  • the Longitudinal slot 6 is at the top in the middle of the cylinder housing 2, where also the connecting flange 10 for the power transmission to be driven Device is provided. Through this power transmission connection is the position of the connecting flange 10 and thus also the cylinder housing 2 specified.
  • connection 17 for the pressure medium supply and with this also the damping screw 18 quickly and easily to the most accessible side of the pressure cylinder 1 be relocated.
  • the cover 12 not only square, but also be rectangular, any polygonal shape can have. It is only essential that the lid is not for Tightening the sealing tapes is used and that both the lag screws 13 and the channel guide in the interior of the cover centrally are symmetrically arranged or executed, which is the basic condition represents the correct rotatability of the lid. Finally the lid can also be cylindrical.
  • Fig. 6 An embodiment for this variant of Invention is shown in Fig. 6.
  • the cover 12 is cylindrical there and protrudes with a cylindrical projection 22 in the cylindrical Interior 3 into which it is sealed by means of a seal 21 is.
  • the two sealing tapes, not shown, are also here attached by clamping pieces 11.
  • the two lids themselves are through Tension screws 13 held on the cylinder housing 2, the number the lag screws 13, their position and their design, can be selected as desired are.
  • the function of the lag screws can also be used by parts of the Machine frame running, in which the cylinder as a whole is installed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Die Erfindung bezieht sich auf einen kolbenstangenlosen Druckmittelzylinder mit einem Zylindergehäuse, das mit einem über seine Länge durchgehenden Längsschlitz versehen ist und einen zylindrischen Innenraum aufweist, in dem ein Antriebskolben längsverschiebbar angeordnet ist, von dem ein seitlicher Ansatz für den Kraftabtrieb durch den Längsschlitz nach außen geführt ist, und mit den zylindrischen Innenraum des Zylindergehäuses an dessen Enden abschließenden Zylinderdeckeln, an deren Außenseite ein Anschluß für die Zu- und Ableitung des den Antriebskolben betätigenden Druckmittels vorgesehen ist, wobei der Längsschlitz von einem im Inneren des Zylindergehäuses vorgesehenen inneren Dichtband abdichtbar ist, das nur im Bereich des Ansatzes von dem Längsschlitz abgehoben und durch einen Führungskanal im Antriebskolben hindurchgeführt ist, und allenfalls durch ein zusätzliches äußeres Dichtband nach außen abgeschlossen ist, das an der Außenseite des Zylindergehäuses über dem Längsschlitz an seinen Enden durch von den Zylinderdeckeln getrennte Klemmstücke befestigt ist.The invention relates to a rodless pressure medium cylinder with a cylinder housing that with a along its length continuous longitudinal slot is provided and a cylindrical interior has, in which a drive piston is arranged to be longitudinally displaceable is a side approach for power output through the longitudinal slot is guided to the outside, and with the cylindrical interior of the Cylinder housing at the ends of the cylinder covers the outside of which is a connection for the supply and discharge of the drive piston actuating pressure medium is provided, the longitudinal slot from an interior provided inside the cylinder housing Sealing tape is sealable, which is only in the area of the approach of the Longitudinal slot lifted and through a guide channel in the drive piston is passed through, and possibly by an additional external Sealing tape is completed on the outside of the Cylinder housing over the longitudinal slot at its ends through by the Cylinder caps separate clamps is attached.

Ein Druckmittelzylinder dieser Bauart ist aus der US 5,245,910 A bekannt. Das äußere Dichtband, das den Längsschlitz an der Außenseite des Zylindergehäuses abdeckt, ist bei dieser bekannten Ausführung an seinen beiden Enden durch je ein von den Zylinderdeckeln getrenntes Klemmstück verankert, das mit zwei Schrauben am Zylindergehäuse befestigt ist und eine Gewindebohrung aufweist, die zum Anschluß einer Druckmittelleitung bestimmt ist. Die Gewindebohrung führt in den Zwischenraum zwischen dem äußeren und dem inneren Dichtband, das bis zu den Deckeln durchgeht, wo zwischen das das äußere Dichtband haltende Klemmstück und das innere Dichtband in den Längsschlitz eine Dichtung eingesetzt ist. Der Längsschlitz ist dadurch abgedichtet, so daß es möglich ist, im Zwischenraum zwischen den beiden Dichtbändern ein Vakuum oder einen Überdruck gegenüber dem den Druckmittelzylinder umgebenden Raum zu erzeugen. Dadurch wird verhindert, daß Druckmittel aus dem Druckmittelzylinder in den Umgebungsraum austritt oder aus diesem in den Zylinder gelangt, z.B. wenn der Druckmittelzylinder in einer reinen oder aber in einer aggressiven Atmosphäre verwendet wird. Die Befestigung der Enden des inneren Dichtbandes ist in dieser Druckschrift nicht beschrieben. Da das innere Dichtband aber während des Betriebes des Druckmittelzylinders einer Zugbelastung in seiner Längsrichtung ausgesetzt ist und sowohl den Innenraum des Zylinders als auch den Zwischenraum zwischen den beiden Dichtbändern abzudichten hat, muß es bis zu den beiden Zylinderdeckeln durchgehen und formschlüssig, also nicht bloß kraftschlüssig durch eine elastische Dichtung, am Zylindergehäuse verankert sein. Es ist daher davon auszugehen, daß das innere Dichtband in herkömmlicher Weise durch die Zylinderdeckel am Zylindergehäuse befestigt ist.A pressure medium cylinder of this type is from US 5,245,910 A. known. The outer sealing tape that has the longitudinal slot on the outside covers the cylinder housing, is in this known version both ends by a separate one from the cylinder covers Anchored clamping piece, which is attached to the cylinder housing with two screws is and has a threaded bore for connecting a Pressure fluid line is determined. The threaded hole leads into the space between the outer and inner sealing tape that up to passes through the lids, where between that holding the outer sealing tape Clamp and the inner sealing tape in the longitudinal slot a seal is inserted. The longitudinal slot is sealed so that it a vacuum is possible in the space between the two sealing tapes or an overpressure compared to that surrounding the pressure medium cylinder Generate space. This prevents pressure medium Leaves or exits the pressure medium cylinder into the surrounding space into the cylinder, e.g. if the pressure cylinder in in a pure or in an aggressive atmosphere. The attachment of the ends of the inner sealing tape is in this document not described. Since the inner sealing tape but during the Operation of the pressure medium cylinder a tensile load in its longitudinal direction is exposed and both the interior of the cylinder as well has to seal the space between the two sealing tapes, it must go through to the two cylinder covers and be form-fitting, So not just non-positively through an elastic seal, on Cylinder housing must be anchored. It can therefore be assumed that the inner sealing tape in a conventional manner through the cylinder cover on Cylinder housing is attached.

Druckmittelzylinder, etwa Pneumatik- oder auch Hydraulikzylinder, erfordern bekanntlich für die Zuführung des den Arbeitskolben des Zylinders betätigenden Druckmittels Luftanschlüsse, die mittels Gewinde verschiedener Größe zur Aufnahme von Schlauchverschraubungen oder auch von sogenannten Steckanschlüssen ausgeführt sind. Die Anschlüsse liegen in aller Regel quer zur Achse des Druckmittelzylinders horizontal abgehend in den Abschlußdeckeln des Zylinders. Bei der Anwendung der Druckmittelzylinder ist es aber oftmals erforderlich, die Anschlüsse nach der anderen Seite oder aber nach unten, allenfalls auch nach oben abgehen zu lassen, da die Platzverhältnisse bei der Montage des Druckmittelzylinders dies erfordern.Pressure medium cylinders, such as pneumatic or hydraulic cylinders, famously require for the supply of the working piston of the Cylinder actuating pressure medium air connections, which are threaded different sizes to accommodate hose fittings or are also carried out by so-called plug connections. The connections are generally horizontal to the axis of the pressure cylinder starting in the end caps of the cylinder. When using the Pressure fluid cylinders, however, are often necessary to adjust the connections the other side or down, if necessary also go up to leave because of the space available when installing the pressure cylinder require this.

Für Kolbenstangenzylinder mit zentrischem Kraftabtrieb über die Kolbenstange ist die bei der Herstellung vorgegebene Lage des Anschlusses am Druckmittelzylinder ohne Belang, da der Zylinder rotationssymmetrisch aufgebaut ist und der Anwender in der Lage ist, bei der Montage des Druckmittelzylinders durch Drehen desselben um seine Achse die Anschlüsse dort hinzulegen, wo er es möchte. Die bisher bekannte Bauform von kolbenstangenlosen Zylindern macht das einfache Drehen des Zylinders jedoch unmöglich, da der Kraftabtrieb nicht zentrisch am Ende des Zylinders, sondern seitlich am Zylindergehäuse durch den Längsschlitz hindurch erfolgt. Die Raumlage des Druckmittelzylinders ist daher durch die Lage des Anschlusses für den Antrieb der anzutreibenden Einrichtung vorgegeben.For piston rod cylinders with centric power output via the Piston rod is the position of the connection specified during manufacture irrelevant to the pressure medium cylinder, since the cylinder is rotationally symmetrical is constructed and the user is able to assemble of the pressure medium cylinder by rotating it around its axis, the connections wherever he wants. The previously known design of rodless cylinders makes the cylinder easy to turn however impossible because the power take-off is not centric at the end of the Cylinder, but on the side of the cylinder housing through the longitudinal slot through it. The spatial position of the pressure cylinder is therefore through the location of the connection for driving the device to be driven given.

Bisher wird dieses Problem dadurch gelöst, daß für jeden kolbenstangenlosen Druckmittelzylinder verschiedene Zylinderdeckel mit an unterschiedlichen Stellen liegenden Anschlüssen angeboten werden. Eine andere Lösung des Problems besteht darin, einen sogenannten Universaldeckel anzubieten, der gleich drei Gewindeanschlüsse aufweist. Die nichtbenutzten Anschlüsse müssen dabei mittels Stopfen verschlossen werden.So far, this problem has been solved in that for each rodless Pressure cylinder different cylinder covers with different ones Position connections are offered. Another The solution to the problem is a so-called universal lid to offer, which has three threaded connections. The unused connections must be closed with plugs become.

Der Erfindung liegt die Aufgabe zugrunde, die bekannten kolbenstangenlosen Zylinder der eingangs angeführten Bauart so zu verbessern, daß auf einfache Weise und ohne Auswechseln der Deckel die Anschlüsse für die Zu- und Ableitung des Druckmittels auf beliebigen Seiten des Zylinders von den Zylinderdeckeln abgehend vorgesehen werden können.The invention has for its object the known rodless To improve cylinders of the type mentioned at the beginning, that the connections in a simple manner and without changing the cover for the supply and discharge of the pressure medium to any Sides of the cylinder provided from the cylinder covers can be.

Die Erfindung löst diese Aufgabe dadurch, daß auch das innere Dichtband an seinen Enden jeweils durch ein von den Zylinderdeckeln getrenntes Klemmstück im oder am Längsschlitz verankert ist und die beiden Zylinderdeckel in unterschiedlichen, in der Ebene des Zylinderdeckels gegeneinander verdrehten Positionen am Zylindergehäuse befestigbar sind, und daß die das Druckmittel übertragenden Kanäle in den beiden Zylinderdeckeln im Übergangsbereich zwischen dem Zylinderdeckel und dem benachbarten Bauteil des Zylindergehäuses rotationssymmetrisch angeordnet sind.The invention solves this problem in that the inner Sealing tape at each end by one of the cylinder covers separate clamping piece is anchored in or on the longitudinal slot and the two cylinder covers in different, in the plane of the cylinder cover positions rotated against each other can be attached to the cylinder housing are, and that the channels transmitting the pressure medium in the two cylinder covers in the transition area between the cylinder covers and the adjacent component of the cylinder housing rotationally symmetrical are arranged.

Die erfindungsgemäße Aufgabenlösung zeichnet sich durch große Einfachheit aus. Sie mag deshalb bei rückschauender Betrachtung naheliegend erscheinen. Sie war aber für den Fachmann nicht ohne weiteres zu erkennen, da bei den kolbenstangenlosen Zylindern die Zylinderdekkel, im Gegensatz zu den Druckmittelzylindern mit Kolbenstangen, nicht rotationssymmetrisch aufgebaut sind. Bekanntlich werden bei den kolbenstangenlosen Zylindern die den Längsschlitz innen abdichtenden Dichtbänder mittels der Zylinderdeckel im Schlitzbereich festgeklemmt und befestigt. Schon aus diesem Grund ist für die Zylinderdeckel eine feste Positionierung gegenüber dem Zylindergehäuse vorgegeben, so daß ein einfaches Verdrehen der Zylinderdeckel in eine andere Lage nicht möglich schien. Erst die durch die Erfindung vorgesehene Trennung der Befestigung des inneren Dichtbandes von den Zylinderdeckeln hat die grundsätzliche Voraussetzung geschaffen, diese auch in anderen Lagen verdreht einbauen zu kvnnen. Dazu ist es außerdem erforderlich, daß alle Druckmittelkanäle und Bohrungen in den Deckeln rotationssymmetrisch angeordnet sind, um die erforderlichen Leitungsverbindungen in allen möglichen Einbaulagen der Deckel sicherzustellen. Die Erfindung ermöglicht es jedenfalls, die Lage des Anschlusses für die Zu- und Ableitung des den Zylinder betätigenden Druckmittels für jeden Zylinderdeckel getrennt wählen zu können, so daß die Anschlüsse auf einfache Weise immer an eine gut zugängliche und sowohl für die Montage als auch für den anschließenden Betrieb des Zylinders vorteilhafte Stelle gelegt werden können.The task solution according to the invention is characterized by large Simplicity out. It may therefore be obvious when looking back appear. However, it was not easy for the specialist recognizable, because in the case of the rodless cylinders the cylinder covers, in contrast to the pressure medium cylinders with piston rods, not are rotationally symmetrical. As is well known, the rodless Cylinders that seal the longitudinal slot on the inside Sealing tapes clamped in the slot area by means of the cylinder cover and attached. For this reason alone, the cylinder cover is fixed Positioning in relation to the cylinder housing specified so that a Simply turning the cylinder cover into another position is not possible seemed. Only the separation of the attachment provided by the invention the inner sealing tape from the cylinder covers has the basic one Prerequisite created, this also twisted in other locations can be installed. It also requires that everyone Pressure medium channels and bores in the covers are rotationally symmetrical are arranged to provide the required line connections in all ensure possible installation positions of the covers. The invention enables in any case, the location of the connection for the feed and Derivation of the pressure medium actuating the cylinder for each cylinder cover to be able to choose separately, so that the connections are simple Always in an easily accessible and both for assembly as well advantageous place for the subsequent operation of the cylinder can be.

Die Klemmstücke, mit denen die Dichtbänder am oder im Längsschlitz des Zylindergehäuses befestigt sind, können in der Nähe der Enden des Zylindergehäuses in den Längsschlitz eingesetzt und durch sie aufweitende Klemmschrauben mittels Keilwirkung an den Wänden des Längsschlitzes festgehalten sein. Das innere Dichtband, das den Längsschlitz im Bereich des druckbeaufschlagten Zylinderraumes abdichtet, kann dabei formschlüssig, ein allenfalls vorgesehenes äußeres Dichtband, das den Längsschlitz lediglich nach außen abdeckt, kraftschlüssig an den Klemmstücken befestigt sein. Diese liegen in einem verhältnismäßig schmalen Totbereich direkt am Ende des Zylindergehäuses. Es ist dies derselbe Bereich, in dem der luftdichte Abschluß des Zylindergehäuses erfolgt. Das jeweilige Klemmstück stemmt sich dort mittels Keilwirkung gegen die Wände des Längsschlitzes und bewirkt so eine sichere Verankerung sowohl des inneren als auch des äußeren Dichtbandes. Da das Klemmstück im Längsschlitz axial verschiebbar ist, kann die Bandspannung den jeweiligen Anforderungen einfach angepaßt werden. The clamping pieces with which the sealing tapes on or in the longitudinal slot of the cylinder housing can be attached near the Ends of the cylinder housing inserted into the longitudinal slot and through it widening clamping screws by means of wedge action on the walls of the Longitudinal slot to be held. The inner sealing tape that the longitudinal slot seals in the area of the pressurized cylinder space, can be form-fitting, an external sealing tape that may be provided, that only covers the longitudinal slot to the outside, non-positively on the Clamps are attached. These are proportionate narrow dead area directly at the end of the cylinder housing. It is this the same area in which the airtight seal of the cylinder housing he follows. The respective clamping piece braces there by means of a wedge effect against the walls of the longitudinal slot and thus ensures secure anchoring both the inner and outer sealing tape. Since that Clamping piece in the longitudinal slot is axially displaceable, the belt tension can be easily adapted to the respective requirements.

Bei einer bevorzugten Ausführungsform der Erfindung können die Zylinderdeckel, die vorzugsweise mit vieleckigem, z.B. quadratischem oder rechteckigem Querschnitt ausgebildet sind, durch zentrisch symmetrisch angeordnete, zur Achse des Zylindergehäuses parallel verlaufende Zugschrauben an das Zylindergehäuse angepreßt sein. Bei dieser Ausbildung ist es auf einfache Weise möglich, nach Lösen der Zugschrauben die beiden Zylinderdeckel unabhängig voneinander jeweils um einen Winkel von 90° in seiner Ebene zu verdrehen, so daß der Anschluß für das Druckmittel in vier verschiedenen Raumlagen vorgesehen werden kann. Diese Ausführung hat den weiteren Vorteil, daß sie keine größeren Änderungen der bisherigen Konstruktion der kolbenstangenlosen Zylinder bedingt.In a preferred embodiment of the invention, the Cylinder covers, which are preferably polygonal, e.g. square or rectangular cross-section are formed by centrically symmetrical arranged, parallel to the axis of the cylinder housing Tension screws must be pressed against the cylinder housing. With this training it is easily possible, after loosening the lag screws both cylinder lids independently of each other at an angle of 90 ° to rotate in its plane, so that the connection for the Pressure fluid can be provided in four different positions. This version has the further advantage that it does not make any major changes the previous design of the rodless cylinder conditionally.

Bei einer weiteren Variante des erfindungsgemäßen Zylinders können die Zylinderdeckel an einer Zylinderfläche des Zylindergehäuses zentriert und koaxial zur Zylinderfläche frei drehbar sein. Es ist dann möglich, die beiden Zylinderdeckel mit den Anschlüssen für das Druckmittel in jede gewünschte Raumlage einzustellen. Eine Weiterbildung dieser Ausführungsform sieht vor, daß die Zylinderdeckel am Zylindergehäuse durch an ihnen angreifende, relativ zu ihnen verdrehbare Halterahmen befestigt sind, an denen Zugschrauben angreifen, die die Zylinderdeckel an das Zylindergehäuse anpressen.In a further variant of the cylinder according to the invention can the cylinder cover on a cylinder surface of the cylinder housing centered and freely rotatable coaxial to the cylinder surface. It is then possible, the two cylinder covers with the connections for the pressure medium in any desired position. A further education this embodiment provides that the cylinder cover on the cylinder housing by holding frames which engage them and can be rotated relative to them are attached to which tie bolts attack the cylinder covers press against the cylinder housing.

In weiterer Ausgestaltung der Erfindung kann diese in vorteilhafter Weise auch bei einem kolbenstangenlosen Druckmittelzylinder angewendet werden, der mit einer Endlagendämpfung für den Antriebskolben versehen ist. Die Endlagendämpfung besteht wie bei den bekannten Ausführungen aus an den Enden des Zylindergehäuses in Achsrichtung in diese hineinragenden Dämpfungszapfen mit einem zentralen Kanal zur Zu- und Ableitung des Druckmittels. Die Dämpfungszapfen wirken mit Dämpfungszylindern in den Stirnseiten des Antriebskolbens zusammen, die beim Eindringen eines Dämpfungszapfens den zentralen Kanal abschließen, wobei seitlich der Dämpfungszapfen jeweils wenigstens ein Dämpfungskanal vorgesehen ist, der über eine durch eine Dämpfungsschraube verstellbare Drossel in den Druckmittelanschluß mündet. In a further embodiment of the invention, this can be advantageous Way also applied to a rodless pressure medium cylinder be the one with end position damping for the drive piston is provided. The end position damping exists as in the known versions off at the ends of the cylinder housing in the axial direction in these protruding damping pins with a central channel for and deriving the pressure medium. The damping pins act with damping cylinders in the end faces of the drive piston, which close the central channel when a damping pin penetrates, with at least one damping channel on each side of the damping pin is provided, which is adjustable via a damping screw Throttle opens into the pressure medium connection.

Erfindungsgemäß ist bei einem Druckmittelzylinder mit einer Endlagendämpfung die Dämpfungsschraube zur Verstellung der Drossel auf derselben Seite des Deckels wie der Druckmittelanschluß angeordnet und verläuft mit ihrer Achse ungefähr in gleicher Richtung wie der Druckmittelanschluß, wobei zwischen dem Dämpfungskanal und der Drossel ein Verbindungskanal angeordnet ist, der im Zylinderdeckel rotationssymmetrisch verläuft, vorzugsweise die Zentralbohrung konzentrisch umgibt. Es wird also bei dieser Ausbildung des Druckmittelzylinders zusammen mit der Verstellung des Anschlusses für die Zu- und Ableitung des Druckmittels auch die Dämpfungsschraube zur Verstellung der Endlagendämpfung in die gleiche Position mit dem Anschluß gebracht, so daß auch die Dämpfungsschraube an gut zugänglicher Stelle liegt und so eine einfache Abstimmung der Dämpfung ermöglicht.According to the invention in a pressure medium cylinder with a End position damping the damping screw for adjusting the throttle arranged on the same side of the cover as the pressure medium connection and runs with its axis in approximately the same direction as that Pressure medium connection, being between the damping channel and the throttle a connecting channel is arranged which is rotationally symmetrical in the cylinder cover runs, preferably the central bore concentrically surrounds. So it is with this design of the pressure cylinder together with the adjustment of the connection for the supply and discharge of the pressure medium also the damping screw for adjusting the end position damping brought into the same position with the connector so that also the damping screw is in an easily accessible place and so one allows easy adjustment of the damping.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen, die in den Zeichnungen schematisch dargestellt sind. In diesen zeigt Fig. 1 einen Längsschnitt durch den erfindungsgemäßen kolbenstangenlosen Druckmittelzylinder, Fig. 2 eine etwas größere Schnittdarstellung des einen Endes des Druckmittelzylinders, Fig. 3 dazu einen Schnitt nach der Linie III-III in Fig. 2, Fig. 2a eine gegenüber Fig. 2 etwas abgeänderte Ausführung des Zylindergehäuses ohne Zylinderdeckel und Fig. 3a einen zu Fig. 3 analogen Schnitt nach der Linie Illa-llla in Fig. 2a. In Fig. 4 ist das Ende eines Druckmittelzylinders in etwas abgeänderter Bauart im axialen Längsschnitt dargestellt, Fig. 5 zeigt dazu eine perspektivische Ansicht des Zylinderendes und Fig. 6 zeigt das Zylinderende eines anderen Ausführungsbeispieles in teilweise geschnittener Seitenansicht.Further details and advantages of the invention result from the following description of exemplary embodiments, which in the Drawings are shown schematically. 1 shows one of them Longitudinal section through the rodless pressure medium cylinder according to the invention, Fig. 2 is a somewhat larger sectional view of one end of the pressure cylinder, Fig. 3 shows a section along the line III-III in FIG. 2, FIG. 2a shows a somewhat modified version compared to FIG. 2 of the cylinder housing without cylinder cover and Fig. 3a one too Fig. 3 analog section along the line Illa-llla in Fig. 2a. 4 is the end of a pressure cylinder in a slightly modified design in Axial longitudinal section shown, Fig. 5 shows a perspective view View of the cylinder end and Fig. 6 shows the cylinder end of another Embodiment in a partially sectioned side view.

In allen Ausführungsbeispielen besteht der Druckmittelzylinder 1 aus einem Zylindergehäuse 2, das einen zylindrischen Innenraum 3 aufweist, in dem ein Antriebskolben 4 verschiebbar ist. Der Antriebskolben 4 ist an seinen Enden durch Dichtungen 5 im zylindrischen Innenraum 3 abgedichtet und unterteilt diesen in zwei voneinander unabhängige und miteinander nicht verbundene Druckräume zu beiden Seiten des Antriebskolbens 4. The pressure medium cylinder 1 exists in all exemplary embodiments from a cylinder housing 2, which has a cylindrical interior 3, in which a drive piston 4 is displaceable. The drive piston 4 is at its ends through seals 5 in the cylindrical interior 3rd sealed and divided into two independent and interconnected pressure chambers on both sides of the drive piston 4th

Das Zylindergehäuse 2 ist mit einem über seine ganze Länge durchgehenden Längsschlitz 6 versehen. Dieser ist im Bereich der beiden Druckräume des zylindrischen Innenraumes 3 durch Dichtbänder abgedichtet, u.zw. durch ein inneres Dichtband 7 und ein äußeres Dichtband 8, das im wesentlichen den Längsschlitz 6 nach außen abdeckt. Am Antriebskolben 4 ist gemäß Fig. 1 ein seitlicher Ansatz 9 befestigt, der durch den Längsschlitz 6 hindurch aus dem Zylindergehäuse 2 herausgeführt ist und im Ausführungsbeispiel mit einem Anschlußflansch 10 endet. Über diesen Anschlußflansch 10 wird die Antriebskraft des Druckmittelzylinders 1 abgenommen und erfolgt die Kupplung mit einem durch den Druckmittelzylinder 1 anzutreibenden Maschinenteil.The cylinder housing 2 is one over its entire length continuous longitudinal slot 6 provided. This is in the area of the two Pressure chambers of the cylindrical interior 3 sealed by sealing tapes, etc. by an inner sealing tape 7 and an outer sealing tape 8, which essentially covers the longitudinal slot 6 to the outside. On the drive piston 4, a side extension 9 is attached according to FIG led out of the cylinder housing 2 through the longitudinal slot 6 is and ends in the embodiment with a connecting flange 10. About this connection flange 10, the driving force of the pressure cylinder 1 removed and the coupling takes place with a through the Pressure medium cylinder 1 machine part to be driven.

Wie aus Fig. 1 zu erkennen ist, sind die beiden Dichtbänder, das innere Dichtband 7 und das äußere Dichtband 8, an jedem Ende des Zylindergehäuses 2 durch je ein Klemmstück 11 am oder im Längsschlitz 6 befestigt. Die Klemmstücke 11 liegen unmittelbar am Rande von Zylinderdeckeln 12, die durch vier Zugschrauben 13 an das Zylindergehäuse 2 dichtend angepreßt sind. Von jedem Zylinderdeckel 12 ragt ein Dämpfungszapfen 14 gegen den Antriebskolben 4 im zylindrischen Innenraum 3 des Zylindergehäuses 2 vor. In den beiden Enden des Antriebskolbens 4 ist je ein Dämpfungszylinder 15 vorgesehen, die mit den Dämpfungszapfen 14 zusammenwirken. Diese sind hohl ausgebildet und stehen über einen zentralen Kanal 16 mit dem jeweiligen Anschluß 17 für das den Antriebskolben 4 antreibende Druckmittel in Verbindung. Seitlich neben den Anschlüssen 17 sind in den beiden Deckeln 12 noch Dämpfungsschrauben 18 angeordnet, die zur Verstellung der Drossel einer Dämpfungseinrichtung für die Endlagendämpfung dienen.As can be seen from Fig. 1, the two sealing tapes are the inner sealing tape 7 and the outer sealing tape 8, at each end of the Cylinder housing 2 by a clamping piece 11 on or in the longitudinal slot 6 attached. The clamping pieces 11 are located directly on the edge of cylinder covers 12, which are attached to the cylinder housing 2 by four lag screws 13 are pressed tightly. A damping pin protrudes from each cylinder cover 12 14 against the drive piston 4 in the cylindrical interior 3 of the cylinder housing 2 before. In the two ends of the drive piston 4 a damping cylinder 15 is provided, each with the damping pin 14 cooperate. These are hollow and protrude a central channel 16 with the respective connection 17 for the drive piston 4 driving pressure media in connection. To the side of the Connections 17 are damping screws in the two covers 12 18 arranged to adjust the throttle of a damping device serve for cushioning.

Aus Fig. 1 geht außerdem hervor, daß die beiden zylindrischen Innenräume 3 des Zylindergehäuses 2 zwischen dem jeweiligen Zylinderdeckel 12 und der Dichtung 5 des Antriebskolbens 4 durch das innere Dichtband 7 abgedichtet sind. Im Bereich des radialen Ansatzes 9 des Antriebskolbens 4 durchsetzt das innere Dichtband 7 einen Führungskanal 19 und das äußere Dichtband 8 ist durch einen gleichfalls im radialen Ansatz 9 vorgesehenen Führungskanal 20 hindurchgeführt. Die jeweilige Spannung der beiden Dichtbänder 7 und 8 kann durch die Klemmstücke 11 an ihren Enden reguliert werden, die im Längsschlitz 6 entsprechend verschiebbar sind.1 also shows that the two cylindrical Interiors 3 of the cylinder housing 2 between the respective cylinder cover 12 and the seal 5 of the drive piston 4 through the inner Sealing tape 7 are sealed. In the area of the radial extension 9 of the Drive piston 4 passes through the inner sealing band 7 through a guide channel 19 and the outer sealing strip 8 is also in the radial Approach 9 provided guide channel 20 passed through. The respective Tension of the two sealing tapes 7 and 8 can be achieved by the clamping pieces 11 are regulated at their ends, correspondingly in the longitudinal slot 6 are movable.

Wie aus Fig. 2 ersichtlich ist, liegen die Klemmstücke 11 im wesentlichen in einem vom Standpunkt der Druckbeaufschlagung toten Bereich zwischen dem Ende des Zylindergehäuses 2 und einer Abdichtung 21, die an einem zylindrischen Ansatz 22 vorgesehen ist, der vom Deckel 12 in den zylindrischen Innenraum 3 hineinragt. Der wesentliche Aufbau der Klemmstücke 11 ist aus den Fig. 3 und 3a zu erkennen. Diese bestehen gemäß Fig. 3 jeweils aus einem Gehäuse 23 und aus einem Klemmkeil 24, der mittels einer Klemmschraube 25 in eine keilförmige Aussparung des Gehäuses 23 hineingezogen wird und diese gegen die Seitenwände des Längsschlitzes 6 aufspreizt und festklemmt. Bei der Ausführung nach den Fig. 2a und 3a ist das Gehäuse 23 der Klemmstücke 11 jeweils mittels einer Klemmschraube 25 und einer Mutter 25a auf dem Längsschlitz 6 befestigt.As can be seen from Fig. 2, the clamping pieces 11 are in essentially dead in one from the standpoint of pressurization Area between the end of the cylinder housing 2 and a seal 21, which is provided on a cylindrical projection 22, which is from the lid 12 protrudes into the cylindrical interior 3. The essential structure the clamping pieces 11 can be seen from FIGS. 3 and 3a. These exist 3 each from a housing 23 and a clamping wedge 24, by means of a clamping screw 25 in a wedge-shaped recess of the housing 23 is drawn in and this against the side walls of the Longitudinal slot 6 spreads and clamps. When executing after 2a and 3a, the housing 23 of the clamping pieces 11 is in each case by means of a clamping screw 25 and a nut 25a on the longitudinal slot 6 attached.

Das innere Dichtband 7 reicht in beiden Ausführungsbeispielen bis zu den Enden des Zylindergehäuses 2 und ist gemäß den Fig. 2 und 3 durch den Bolzen der Klemmschraube 25 formschlüssig gehalten, auf den es mit einer Öffnung aufgesteckt ist. In der Ausführung nach den Fig. 2a und 3a wird das Ende des inneren Dichtbandes 7 zusätzlich durch die Mutter 25a der Klemmschraube 25 gegen den Längsschlitz 6 festgeklemmt. Das äußere Dichtband 8 ist in allen Beispielen etwas kürzer als das innere Dichtband 7 und durch eine eigene Haltevorrichtung 11a am Klemmstück 11 oder zwischen diesem und dem Zylindergehäuse 2 eingeklemmt.In both exemplary embodiments, the inner sealing tape 7 extends up to to the ends of the cylinder housing 2 and is according to FIGS. 2 and 3 held by the bolt of the clamping screw 25 on the it is attached with an opening. In the embodiment according to the Fig. 2a and 3a, the end of the inner sealing tape 7 is additionally by the Nut 25a of the clamping screw 25 clamped against the longitudinal slot 6. The outer sealing tape 8 is somewhat shorter than that in all examples inner sealing tape 7 and by its own holding device 11a Clamping piece 11 or clamped between this and the cylinder housing 2.

Der prinzipielle Aufbau der vorgesehenen Dämpfungseinrichtung ist der Fig. 4 zu entnehmen. Auch dort ist das Zylindergehäuse 2 mit durch nicht dargestellte Zugschrauben gehaltenen Deckeln 12 an seinen Enden abgeschlossen. An den dargestellten Deckel 12 schließt ein in diesem Fall vom Deckel 12 getrennter Ansatz 22 an, der in den zylindrischen Innenraum 3 hineinragt und diesen mit einer Abdichtung 21 abdichtet. Über den Ansatz 22 ragt noch ein Dämpfungszapfen 14 vor, der mit einem nicht dargestellten Dämpfungszylinder des gleichfalls nicht dargestellten Antriebskolbens zusammenwirkt. Wie in den übrigen Beispielen weist auch hier der Dämpfungszapfen 14 einen zentralen Kanal 16 auf, der mit dem Anschluß 17 in Verbindung steht. Parallel zum zentralen Kanal 16 des Dämpfungszapfens 14 durchsetzt ein Dämpfungskanal 26 den Ansatz 22 und verbindet den zylindrischen Innenraum 3 mit einem Verbindungskanal 27 im Deckel 12. Dieser Verbindungskanal 27 verläuft im Deckel 12 rotationssymmetrisch und führt über eine im Deckel 12 vorgesehene Verbindungsbohrung 28 zu einer Drossel 29, die mittels der Dämpfungsschraube 18 eingestellt werden kann. Die Drossel 29 steht mit dem Anschluß 17 in Verbindung.The basic structure of the intended damping device 4 can be seen. The cylinder housing 2 is also there by means of lag screws, not shown, covers 12 on its Ends completed. The lid 12 shown in includes in this case from the cover 12 separate approach 22, which in the cylindrical Interior 3 protrudes and seals it with a seal 21. A projection 14 protrudes from the extension 22, which likewise with a damping cylinder, not shown shown driving piston cooperates. As in the other examples here, too, the damping pin 14 has a central channel 16 on, which is connected to the connection 17. Parallel to the central one Channel 16 of the damping pin 14 passes through a damping channel 26 the approach 22 and connects the cylindrical interior 3 with a Connecting channel 27 in the cover 12. This connecting channel 27 runs in the cover 12 rotationally symmetrical and leads over a in the cover 12 provided connection bore 28 to a throttle 29, which by means of Damping screw 18 can be adjusted. The throttle 29 stands with the connection 17 in connection.

Anhand der schematischen Darstellung in Fig. 5 kann die Wirkungsweise der Erfindung einfach veranschaulicht werden. Der in Fig. 5 darstellte Deckel 12 ist rechteckig ausgebildet und mit Hilfe von vier parallelen, zentrisch symmetrisch angeordneten und nur angedeuteten Zugschrauben 13 am Zylindergehäuse 2 festgehalten. Der Anschluß 17 für die Zu- und Ableitung des den Druckmittelzylinder 1 betätigenden Druckmittels und die Dämpfungsschraube 18 für die Endlagendämpfung befinden sich auf der vorne dargestellten Seite des Deckels 12. Der Längsschlitz 6 liegt oben in der Mitte des Zylindergehäuses 2, wo auch der Anschlußflansch 10 für die Kraftübertragung auf die anzutreibende Vorrichtung vorgesehen ist. Durch diesen Kraftübertragungsanschluß ist die Lage des Anschlußflansches 10 und damit auch des Zylindergehäuses 2 vorgegeben.Based on the schematic representation in Fig. 5, the mode of operation of the invention are simply illustrated. The one in Fig. 5 illustrated cover 12 is rectangular and with the help of four parallel, centrally symmetrically arranged and only indicated Tension screws 13 held on the cylinder housing 2. The connection 17 for the supply and discharge of the pressure cylinder 1 actuating Pressure medium and the damping screw 18 for the end position damping are located on the front side of the lid 12. The Longitudinal slot 6 is at the top in the middle of the cylinder housing 2, where also the connecting flange 10 for the power transmission to be driven Device is provided. Through this power transmission connection is the position of the connecting flange 10 and thus also the cylinder housing 2 specified.

Um den Druckmittelanschluß 17 zu verlegen, ist es lediglich notwendig, die vier Schrauben 13 zu lösen, den Deckel 12 vom Zylindergehäuse 2 abzunehmen und z.B. in Richtung des Pfeiles 30 oder auch in entgegengesetzter Richtung jeweils um 90° zu verdrehen, wieder auf die vier Zugschrauben 13 aufzusetzen und mit deren Hilfe am Zylindergehäuse 2 zu befestigen. Wenn der Deckel 12 in Richtung des Pfeiles 30 um 90° verdreht wird, befinden sich der Anschluß 17 und die Dämpfungsschraube 18 an der Oberseite des Druckittelzylinders 1. Bei einer Verdrehung um 180° liegt der Anschluß 17 und die Dämpfungsschraube 18 auf der verdeckten Rückseite des Druckmittelzylinders 1. Durch Verdrehen des Deckels 12 gegen die Richtung des Pfeiles 30 um 90° kann erreicht werden, daß der Anschluß 17 und die Dämpfungsschraube 18 an der Unterseite des Druckmittelzylinders 1 liegen.To move the pressure medium connection 17, it is only necessary to loosen the four screws 13, the cover 12 from the cylinder housing 2 and e.g. in the direction of arrow 30 or in to turn in the opposite direction by 90 °, back to the put on four lag screws 13 and with their help on the cylinder housing 2 to attach. When the lid 12 in the direction of arrow 30 around Is rotated 90 °, there are the connection 17 and the damping screw 18 at the top of the pressure cylinder 1. At one Rotation by 180 ° is the connection 17 and the damping screw 18 on the hidden back of the pressure cylinder 1. Through Rotation of the cover 12 against the direction of arrow 30 by 90 ° can achieved that the connection 17 and the damping screw 18 the bottom of the pressure cylinder 1.

Es kann also der Anschluß 17 für die Druckmittelzuführung und mit diesem auch die Dämpfungsschraube 18 rasch und auf einfache Weise auf die jeweils am besten zugängliche Seite des Druckmittelzylinders 1 verlegt werden. Dies wird in erster Linie dadurch ermöglicht, daß der Deckel 12 bei der erfindungsgemäßen Ausführung nicht mehr zur Befestigung der Dichtbänder am bzw. im Längsschlitz 6 des Zylindergehäuses 2 herangezogen wird, sondern daß für diesen Zweck eigene Klemmstücke 11 verwendet werden.So it can be the connection 17 for the pressure medium supply and with this also the damping screw 18 quickly and easily to the most accessible side of the pressure cylinder 1 be relocated. This is made possible primarily by the fact that the Cover 12 in the embodiment according to the invention no longer for fastening the sealing tapes on or in the longitudinal slot 6 of the cylinder housing 2 is used, but that for this purpose own clamping pieces 11 can be used.

Aus der Darstellung in Fig. 4 ist zu erkennen, daß dieses Verdrehen der Deckel und der Anschlußstellen auch bei Ausführungen möglich ist, die mit einer Dämpfungseinrichtung versehen sind. Dies ist in Fig. 4 auf den rotationssymmetrisch ausgebildeten Verbindungskanal 27 zurückzuführen, der in jeder Lage des Deckels 12 sicherstellt, daß der Dämpfungskanal 26 mit der zur Drossel 29 führenden Verbindungsbohrung 28 verbunden ist. Wenn also der Dämpfungszapfen 14 in den Dämpfungszylinder 15 im Antriebskolben 4 einfährt und der zentrale Kanal 16 im wesentlichen abgeschlossen wird, erfolgt eine Verdrängung des Druckmittels aus dem Ringraum um den Dämpfungszapfen 14 herum durch den Dämpfungskanal 26, den Verbindungskanal 27 und die Verbindungsbohrung 28 zur Drossel 29 und von dieser zum Anschluß 17. Der Deckel 12 kann also auch bei diesem Ausführungsbeispiel in jede beliebige Lage verdreht werden.From the illustration in Fig. 4 it can be seen that this twisting the cover and the connection points are also possible with versions is provided with a damping device. This is in 4 on the rotationally symmetrical connecting channel 27 attributed, which ensures in every position of the lid 12 that the Damping channel 26 with the connecting bore leading to the throttle 29 28 is connected. So if the damping pin 14 in the damping cylinder 15 retracts in the drive piston 4 and the central channel 16 is essentially completed, the Pressure medium from the annular space around the damping pin 14 through the damping channel 26, the connecting channel 27 and the connecting bore 28 to throttle 29 and from this to connection 17. The cover 12 can therefore also in this embodiment in any position be twisted.

Es ist ferner unschwer zu erkennen, daß beim erfindungsgemäßen Druckmittelzylinder die Deckel 12 nicht nur quadratisch, sondern auch rechteckig ausgebildet sein, überhaupt eine beliebige vieleckige Form aufweisen können. Wesentlich ist lediglich, daß der Deckel nicht zum Festspannen der Dichtbänder herangezogen wird und daß sowohl die Zugschrauben 13 als auch die Kanalführung im Inneren des Deckels zentrisch symmetrisch angeordnet bzw. ausgeführt sind, was die Grundbedingung für die ordnungsgemäße Verdrehbarkeit der Deckel darstellt. Schließlich können die Deckel auch zylindrisch ausgeführt sein.It is also easy to see that in the invention Pressure medium cylinder the cover 12 not only square, but also be rectangular, any polygonal shape can have. It is only essential that the lid is not for Tightening the sealing tapes is used and that both the lag screws 13 and the channel guide in the interior of the cover centrally are symmetrically arranged or executed, which is the basic condition represents the correct rotatability of the lid. Finally the lid can also be cylindrical.

Unabhängig von der äußeren geometrischen Form des Deckels ist es möglich, die Deckel nicht nur stufenweise, sondern auch stufenlos verdrehbar anzuordnen. Ein Ausführungsbeispiel für diese Variante der Erfindung ist in Fig. 6 gezeigt. Der Deckel 12 ist dort zylindrisch ausgebildet und ragt mit einem zylindrischen Ansatz 22 in den zylindrischen Innenraum 3 hinein, gegen den er mit Hilfe einer Abdichtung 21 abgedichtet ist. Die beiden nicht dargestellten Dichtbänder sind auch hier durch Klemmstücke 11 befestigt. Die beiden Deckel selbst sind durch Zugschrauben 13 am Zylindergehäuse 2 festgehalten, wobei die Anzahl der Zugschrauben 13, deren Lage und deren Bauform, beliebig wählbar sind. Weiterhin kann die Funktion der Zugschrauben auch von Teilen des Maschinengestells ausgeführt werden, in das der Zylinder insgesamt eingebaut ist.Regardless of the outer geometric shape of the lid it is possible to change the cover not only gradually, but also continuously to arrange rotatable. An embodiment for this variant of Invention is shown in Fig. 6. The cover 12 is cylindrical there and protrudes with a cylindrical projection 22 in the cylindrical Interior 3 into which it is sealed by means of a seal 21 is. The two sealing tapes, not shown, are also here attached by clamping pieces 11. The two lids themselves are through Tension screws 13 held on the cylinder housing 2, the number the lag screws 13, their position and their design, can be selected as desired are. Furthermore, the function of the lag screws can also be used by parts of the Machine frame running, in which the cylinder as a whole is installed.

Aus Fig. 6 geht hervor, daß die Zugschrauben 13 an einem hinter dem Deckel 12 vorgesehenen Halterahmen 31 angreifen, in dem der Deckel 12 mittels eines zentrisch vorragenden zylindrischen Ansatzes 32 drehbar gelagert ist. Bei gelockerten Zugschrauben 13 kann bei diesem Ausführungsbeispiel der Deckel 12 stufenlos um seine Achse in beiden Richtungen verdreht werden, so daß der Anschluß 17 für das Druckmittel samt der Dämpfungsschraube 18 in jede beliebige Position stufenlos verstellt werden kann. Voraussetzung ist auch hier wieder, daß die Dichtbänder nicht durch die Deckel 12, sondern durch eigene Klemmstücke 11 befestigt sind und die Kanalführungen im Inneren des Deckels 12 rotationssymmetrisch ausgebildet sind.From Fig. 6 it can be seen that the lag screws 13 on a rear attack the cover 12 provided holding frame 31 in which the cover 12 rotatable by means of a centrally projecting cylindrical projection 32 is stored. With loosened tension screws 13 can in this embodiment the cover 12 is infinitely variable about its axis in both directions be rotated so that the connection 17 for the pressure medium including the damping screw 18 continuously in any position can be adjusted. Again, the prerequisite is that the Sealing tapes not through the cover 12, but through their own clamping pieces 11 are attached and the channel guides inside the cover 12 are rotationally symmetrical.

Letztlich ist ein besonderer Vorteil für den Anwender auch in der Möglichkeit zu sehen, die Deckel in waagrechter oder senkrechter, also rechtwinkliger Lage zum Maschinengestell zu montieren, während der seitliche Ansatz mit dem Anschlußflansch in relativ gesehen schräger Form zwischen 0 und 90°, je nach Betrachtungsausgangspunkt, angeordnet sein kann. Diese schräge Antriebslage kann in der Regel zur Lösung schwieriger Platzverhältnisse oder Kraftansätze beitragen.Ultimately, there is a particular advantage for the user in the Possibility to see the lid in horizontal or vertical, so to assemble at right angles to the machine frame during the lateral approach with the connecting flange in oblique seen relatively Shape between 0 and 90 °, depending on the point of view can be. This oblique drive position can usually be a solution difficult space or force.

Claims (7)

  1. A rodless fluid cylinder (1) comprising a cylinder housing (2) provided with a continuous longitudinal slot (6) over its length and having a cylindrical inner chamber (3) in which a drive piston (4) is longitudinally displaceably arranged, a lateral projection (9) for the power output extending outwards from the drive piston (4) through the longitudinal slot (6), and comprising cylinder covers (12) closing the cylindrical inner chamber (3) of the cylinder housing (2) at the ends thereof, a connection (17) for the supply and discharge of the fluid which actuates the drive piston (4) being provided on the outside of the cylinder covers (12), wherein the longitudinal slot (6) is sealable by an inner sealing strip (7) which is provided inside the cylinder housing (2), is removed from the longitudinal slot (6) only in the region of the projection (9) and extends through a guide channel (19) in the drive piston (4), and, optionally, is externally sealed by an additional, outer sealing strip (8) fixed at its ends to the outside of the cylinder housing (2) over the longitudinal slot (6) by clamping pieces (11) separate from the cylinder covers (12), characterised in that the inner sealing strip (7) is also secured at each end in or on the longitudinal slot (6) by a clamping piece (11) separate from the cylinder covers (12), and the two cylinder covers (12) are fixable to the cylinder housing (2) in different, mutually rotated positions in the plane of the cylinder cover (12), and in that the fluid-carrying channels in the two cylinder covers (12) are rotationally symmetrically arranged in the transition region between the cylinder cover and the adjacent component of the cylinder housing (2)
  2. A fluid cylinder according to claim 1, characterised in that the clamping pieces (11) are inserted into the longitudinal slot (6) in the vicinity of the ends of the cylinder housing (2) and are held by a wedging action against the walls of the longitudinal slot (6) by clamping bolts (25) which expand the clamping pieces (11).
  3. A fluid cylinder according to claim 1 or 2, characterised in that the inner sealing strip (7) is positively connected and an optionally provided outer sealing strip (8) is frictionally connected to the clamping pieces (11).
  4. A fluid cylinder according to claim 1, 2 or 3, characterised in that the cylinder covers (12), which preferably have a polygonal, e.g. square or rectangular cross-section, are pressed against the cylinder housing (2) by centre-symmetrically arranged draw-in bolts (13) extending parallel to the axis of the cylinder housing (2).
  5. A fluid cylinder according to claim 1, 2 or 3, characterised in that the cylinder covers (12) are centered on a cylindrical surface of the cylinder housing (2) and are freely rotatable co-axially with the cylindrical surface.
  6. A fluid cylinder according to claim 5, characterised in that the cylinder covers (12) are fixed to the cylinder housing (2) by holding frames (31) engaging the cylinder covers (12) and rotatable relative thereto, draw-in bolts (13) engaging the holding frames (31) and pressing the cylinder covers (12) against the cylinder housing (2).
  7. A fluid cylinder according to any one of claims 1 to 6, provided with an end-position damping means for the drive piston (4), comprising damping pins (14) which project from the ends of the cylinder housing (2) in the axial direction, are provided with a central channel (16) for the supply and discharge of the fluid and co-operate with damping cylinders (15) arranged at the ends of the drive piston (4) and closing off the central channel (16) of the damping pin (14) on entry of the latter into the respective damping cylinder (15), wherein at least one damping channel (26) is provided laterally of each of the damping pins (14) and opens into the fluid connection (17) via a throttle (29) adjustable by a damping screw (18), characterised in that the damping screw (18) for adjusting the throttle (29) is arranged on the same side of the cover (12) as the fluid connection (17) and its axis extends approximately in the same direction as the fluid connection (14 [sic - 17]), and in that a connecting channel (27) is arranged between the damping channel (26) and the throttle (29) and extends rotationally symmetrically in the cylinder cover (12), preferably surrounding the central bore (16) concentrically.
EP95890207A 1994-11-30 1995-11-16 Rodless fluid cylinder Expired - Lifetime EP0715083B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT2219/94 1994-11-30
AT0221994A AT402543B (en) 1994-11-30 1994-11-30 PISTONLESS PRESSURE CYLINDER
AT221994 1994-11-30

Publications (3)

Publication Number Publication Date
EP0715083A2 EP0715083A2 (en) 1996-06-05
EP0715083A3 EP0715083A3 (en) 1997-07-23
EP0715083B1 true EP0715083B1 (en) 2000-09-20

Family

ID=3530246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890207A Expired - Lifetime EP0715083B1 (en) 1994-11-30 1995-11-16 Rodless fluid cylinder

Country Status (6)

Country Link
US (1) US5606903A (en)
EP (1) EP0715083B1 (en)
JP (1) JP3713083B2 (en)
AT (1) AT402543B (en)
DE (1) DE59508730D1 (en)
ES (1) ES2151589T3 (en)

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JP3543592B2 (en) * 1997-11-24 2004-07-14 豊和工業株式会社 Rubber damper
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JP2001116147A (en) * 1999-10-18 2001-04-27 Smc Corp Sealing structure of rodless cylinder
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Also Published As

Publication number Publication date
ATA221994A (en) 1996-10-15
EP0715083A3 (en) 1997-07-23
DE59508730D1 (en) 2000-10-26
US5606903A (en) 1997-03-04
AT402543B (en) 1997-06-25
JP3713083B2 (en) 2005-11-02
EP0715083A2 (en) 1996-06-05
ES2151589T3 (en) 2001-01-01
JPH08219114A (en) 1996-08-27

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