EP0135041B1 - Rodless working cylinder - Google Patents

Rodless working cylinder Download PDF

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Publication number
EP0135041B1
EP0135041B1 EP84108579A EP84108579A EP0135041B1 EP 0135041 B1 EP0135041 B1 EP 0135041B1 EP 84108579 A EP84108579 A EP 84108579A EP 84108579 A EP84108579 A EP 84108579A EP 0135041 B1 EP0135041 B1 EP 0135041B1
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EP
European Patent Office
Prior art keywords
power take
cylinder tube
ball
working cylinder
race
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84108579A
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German (de)
French (fr)
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EP0135041A1 (en
Inventor
Oskar Dr. Dipl.-Ing. Peter
Diether Dipl.-Ing. Slowak
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0135041A1 publication Critical patent/EP0135041A1/en
Application granted granted Critical
Publication of EP0135041B1 publication Critical patent/EP0135041B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/084—Characterised by the construction of the motor unit the motor being of the rodless piston type, e.g. with cable, belt or chain

Definitions

  • the invention relates to a rodless working cylinder with a power take-off which can be driven by a piston which is displaceably arranged in a cylinder tube, directly by means of a power bridge or indirectly by means of a rope, belt or the like.
  • a pneumatic linear unit with cylinders without a piston rod a so-called rodless working cylinder
  • the structure of this rodless cylinder can not be found in this document.
  • this known working cylinder is very bulky due to the guide rails arranged at a distance from it.
  • the invention is therefore based on the object of providing a working cylinder which is simpler to manufacture due to relatively easy assembly and takes up less space. This object is achieved according to the invention by the means mentioned in claims 1 and 3.
  • Working cylinders designed in this way have the advantage that the friction losses are minimized, the start of the power take-off from the rest position is precise and gentle, and there is no abrasion of the guide elements.
  • Figure 1 shows a section through a working cylinder which is equipped with a roller guide.
  • Two concave rollers 1a, 1b are guided on both sides on a correspondingly shaped guide ruler 13 and thus also the power take-off 3 with its cover plate 3a, in which the rollers 1 are mounted in a known manner.
  • the guide ruler 13 is fastened to the cylinder profile 5 of the working cylinder by means of screw bolts or the like. 4a. With 18 a cladding profile is designated, which is fastened by means of screw bolts 4b, c, d on the cylinder tube profile 5.
  • the power take-off 3 slides with its cover plate 3a over the concave rollers 1a, 1b along the guide ruler 13.
  • FIG. 2 shows an embodiment variant of the working cylinder shown in FIG. 1, wherein concave-shaped rollers 1a, 1b, which run on a guide ruler 13, are also used.
  • a braking device is provided in the working cylinder. This essentially consists of a brake bellows 6 with its pressure connection 7 and the pressure plate 8, which is arranged above the brake bellows 6 and below the cover plate 3a and receives the pressure connection 7 of the brake bellows 6.
  • An intermediate plate 9 is provided beneath the brake bellows 6, which acts on the guide ruler 13 via the brake linings 10, and the brake bellows 6 is filled with a fluid.
  • the working cylinder according to. Figure 1 can be equipped with a braking device.
  • the brake shoes 11 press the brake pads 10 against the cylinder tube profile 5.
  • this braking device moves into its active position when the pressure in the brake bellows 6 is reduced.
  • the intermediate plate 14 is pressed down by the brake bellows 6, the extension 14a of which separates the brake shoes 15 against the pressure of the tension spring 16 and does not brake the brake pads 10. Only when the pressure escapes from the brake bellows 6 does the tension spring 16 pull the brake shoes 15 in the direction of the brake plate 17, which in turn presses the brake pads 10 against the guide ruler 2.
  • a cladding of the working cylinder is designated 18.
  • FIG. 4 shows a further variant which has a ball bearing instead of a roller bearing.
  • the ball bushings 19a, 19b are arranged on both sides of the working cylinder profile 5 and each run on a correspondingly shaped raceway 20a, 20b which is held on the working cylinder profile 5 by means of hammer head screws 4b, 4d.
  • the power take-off 3 is connected to a cover profile 21 which carries the two ball bushings 19a, 19b.
  • the cladding profile 18 closes off the working cylinder.
  • FIG. 4 can also be supplemented with a braking and positioning device.
  • Further embodiments (such as, for example, according to FIG. 5) are possible within the general inventive concept, in particular combinations of the different guides, also the guiding of several different elements, such as, for example, B. Magnetic switches, light barriers, general contactors etc. is possible.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Description

Die Erfindung bezieht sich auf einen kolbenstangenlosen Arbeitszylinder mit einer Kraftabnahme, die von einem in einem Zylinderrohr verschiebbar angeordneten Kolben direkt durch eine Kraftbrücke oder indirekt durch ein Seil, Band oder dergleichen antreibbar ist.The invention relates to a rodless working cylinder with a power take-off which can be driven by a piston which is displaceably arranged in a cylinder tube, directly by means of a power bridge or indirectly by means of a rope, belt or the like.

Aus der DE-A-2 908 605 ist eine pneumatische Lineareinheit mit Zylindern ohne Kolbenstange, ein sogenannter kolbenstangenloser Arbeitszylinder, bekanntgeworden, der eine oder mehrere Führungsschienen mit Kugelführungen und einen Wagen aufweist, der mit den Kugelführungen und dem Kolbenbügel verbunden ist und durch diesen bewegt wird. Der Aufbau dieser kolbenstangenlosen Arbeitszylinder ist dieser Schrift jedoch nicht zu entnehmen. Im übrigen baut dieser bekannte Arbeitszylinder durch die im Abstand zu ihm angeordneten Führungsschienen sehr voluminös.From DE-A-2 908 605 a pneumatic linear unit with cylinders without a piston rod, a so-called rodless working cylinder, has become known which has one or more guide rails with ball guides and a carriage which is connected to the ball guides and the piston bracket and moves through it becomes. The structure of this rodless cylinder can not be found in this document. In addition, this known working cylinder is very bulky due to the guide rails arranged at a distance from it.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Arbeitszylinder zu schaffen, der durch verhältnismäßig leichten Zusammenbau vereinfacht in der Herstellung ist und einen geringeren Platzbedarf beansprucht. Diese Aufgabe wird gemäß der Erfindung durch die in den Patentansprüchen 1 und 3 genannten Mittel gelöst. Derart ausgebildete Arbeitszylinder haben den Vorteil, daß die Reibungsverluste minimiert sind, das Anfahren der Kraftabnahme aus der Ruhelage heraus präzis und sanft abläuft und keinerlei Abrieb der Führungselemente auftritt.The invention is therefore based on the object of providing a working cylinder which is simpler to manufacture due to relatively easy assembly and takes up less space. This object is achieved according to the invention by the means mentioned in claims 1 and 3. Working cylinders designed in this way have the advantage that the friction losses are minimized, the start of the power take-off from the rest position is precise and gentle, and there is no abrasion of the guide elements.

Die Erfindung ist nachstehend anhand von in den Abbildungen dargestellten Ausführungsbeispielen näher erläutert.The invention is explained in more detail below with reference to exemplary embodiments shown in the figures.

Es zeigt:

  • Fig. einen Arbeitszylinder gem. der Erfindung mit konkaven Laufrollen im Schnitt,
  • Fig. 2 eine Ausführungsvariante der Fig. 1,
  • Fig. 3 einen Arbeitszylinder mit konvexen Rollen,
  • Fig. 4 eine weitere Ausführungsvariante mit Kugellaufführung im Schnitt und
  • Fig. 5 eine weitere Ausführungsvariante mit zwei voneinander unabhängigen Führungssystemen.
It shows:
  • Fig. A working cylinder acc. the invention with concave rollers on average,
  • 2 shows a variant of FIG. 1,
  • 3 shows a working cylinder with convex rollers,
  • Fig. 4 shows a further embodiment with ball running in section and
  • Fig. 5 shows a further embodiment with two independent guide systems.

Die Figur 1 zeigt einen Schnitt durch einen Arbeitszylinder, der mit einer Rollenführung ausgerüstet ist. Zwei konkave Rollen 1a, 1b sind beidseitig an einem entsprechend geformten Führungslineal 13 geführt und damit auch die Kraftabnahme 3 mit ihrer Deckplatte 3a, in der die Rollen 1 in bekannter Weise gelagert sind. Das Führungslineal 13 ist mittels Schraubbolzen oder dergl. 4a am Zylinderprofil 5 des Arbeitszylinders befestigt. Mit 18 ist ein Verkleidungsprofil bezeichnet, das mittels Schraubbolzen 4b, c, d am Zylinderrohrprofil 5 befestigt ist. Die Kraftabnahme 3 gleitet mit ihrer Deckplatte 3a über den konkaven Rollen 1a, 1 b am Führungslineal 13 entlang.Figure 1 shows a section through a working cylinder which is equipped with a roller guide. Two concave rollers 1a, 1b are guided on both sides on a correspondingly shaped guide ruler 13 and thus also the power take-off 3 with its cover plate 3a, in which the rollers 1 are mounted in a known manner. The guide ruler 13 is fastened to the cylinder profile 5 of the working cylinder by means of screw bolts or the like. 4a. With 18 a cladding profile is designated, which is fastened by means of screw bolts 4b, c, d on the cylinder tube profile 5. The power take-off 3 slides with its cover plate 3a over the concave rollers 1a, 1b along the guide ruler 13.

Eine Ausführungsvariante des in Figur 1 dargestellten Arbeitszylinders zeigt Figur 2, wobei ebenfalls konkav geformte Rollen 1a, 1b, die an einem Führungslineal 13 laufen, Anwendung finden. In dem Arbeitszylinder ist gemäß Figur 2 eine Bremseinrichtung vorgesehen. Diese besteht im Wesentlichen aus einem Bremsbalg 6 mit seinem Druckanschluß 7 und der Druckplatte 8, die oberhalb des Bremsbalges 6 und unterhalb der Deckplatte 3a angeordnet ist und den Druckanschluß 7 des Bremsbalges 6 aufnimmt. Unterhalb des Bremsbalges 6 ist eine Zwischenplatte 9 vorgesehen, die über die Bremsbeläge 10 auf das Führungslineal 13 einwirkt, sowie der Bremsbalg 6 mit einem Fluid gefüllt wird.FIG. 2 shows an embodiment variant of the working cylinder shown in FIG. 1, wherein concave-shaped rollers 1a, 1b, which run on a guide ruler 13, are also used. According to FIG. 2, a braking device is provided in the working cylinder. This essentially consists of a brake bellows 6 with its pressure connection 7 and the pressure plate 8, which is arranged above the brake bellows 6 and below the cover plate 3a and receives the pressure connection 7 of the brake bellows 6. An intermediate plate 9 is provided beneath the brake bellows 6, which acts on the guide ruler 13 via the brake linings 10, and the brake bellows 6 is filled with a fluid.

Selbstverständlich kann auch der Arbeitszylinder gem. Figur 1 mit einer Bremseinrichtung ausgerüstet werden. Die Bremsbacken 11 drücken dabei die Bremsbeläge 10 gegen das Zylinderrohrprofil 5.Of course, the working cylinder according to. Figure 1 can be equipped with a braking device. The brake shoes 11 press the brake pads 10 against the cylinder tube profile 5.

Die Fig. 3 zeigt eine Ausführungsvariante, die mit konvex ausgebildeten Rollen 12 und einem entsprechend geformten Führungslineal 2 ausgerüstet ist und gegebenenfalls eine Bremsun Positioniereinrichtung aufweist.3 shows an embodiment variant which is equipped with convex rollers 12 and a correspondingly shaped guide ruler 2 and optionally has a braking positioning device.

Diese Bremseinrichtung geht, im Gegensatz zu der in Figur 2 beschriebenen Brems- und Positioniereinrichtung, bei Druckabbau im Bremsbalg 6 in ihre Wirkstellung. Die Zwischenplatte 14 wird von dem Bremsbalg 6 nach unten gedrückt, wobei deren Fortsatz 14a die Bremsbacken 15 gegen den Druck der Zugfeder 16 getrennt werden und die Bremsbeläge 10 nicht abbremsen. Erst wenn der Druck aus dem Bremsbalg 6 entweicht, zieht die Zugfeder 16 die Bremsbacken 15 in Richtung auf die Bremsplatte 17, die ihrerseits die Bremsbeläge 10 gegen das Führungslineal 2 presst.In contrast to the braking and positioning device described in FIG. 2, this braking device moves into its active position when the pressure in the brake bellows 6 is reduced. The intermediate plate 14 is pressed down by the brake bellows 6, the extension 14a of which separates the brake shoes 15 against the pressure of the tension spring 16 and does not brake the brake pads 10. Only when the pressure escapes from the brake bellows 6 does the tension spring 16 pull the brake shoes 15 in the direction of the brake plate 17, which in turn presses the brake pads 10 against the guide ruler 2.

Eine Verkleidung des Arbeitszylinders ist mit 18 bezeichnet.A cladding of the working cylinder is designated 18.

Die Figur 4 zeigt eine weitere Variante, die anstelle einer Rollenlagerung eine Kugellagerung besitzt. Die Kugellaufbuchsen 19a, 19b sind beidseitig des Arbeitszylinderprofiles 5 angeordnet und an je einer entsprechend geformten Laufbahn 20a, 20b geführt, die am Arbeitszylinderprofil 5 mittels Hammerkopfschrauben 4b, 4d gehalten wird. Die Kraftabnahme 3 ist dabei mit einem Abdeckprofil 21 verbunden, das die beiden Kugellaufbuchsen 19a, 19b trägt. Das Verkleidungsprofil 18 schließt den Arbeitszylinder nach unten ab.FIG. 4 shows a further variant which has a ball bearing instead of a roller bearing. The ball bushings 19a, 19b are arranged on both sides of the working cylinder profile 5 and each run on a correspondingly shaped raceway 20a, 20b which is held on the working cylinder profile 5 by means of hammer head screws 4b, 4d. The power take-off 3 is connected to a cover profile 21 which carries the two ball bushings 19a, 19b. The cladding profile 18 closes off the working cylinder.

Auch die Ausführungsvariante gemäß Figur 4 ist mit einer Brems- und Positioniereinrichtung ergänzbar. Weitere Ausführungsformen (wie z. B. gemäß Fig. 5) sind innerhalb des allgemeinen Erfindungsgedankens möglich, insbesondere auch Kombinationen der verschiedenen Führungen, auch das Führen mehrerer, unterschiedlicher Elemente, wie z. B. Magnetschalter, Lichtschranken allg. Kontaktgeber etc. ist möglich.The embodiment variant according to FIG. 4 can also be supplemented with a braking and positioning device. Further embodiments (such as, for example, according to FIG. 5) are possible within the general inventive concept, in particular combinations of the different guides, also the guiding of several different elements, such as, for example, B. Magnetic switches, light barriers, general contactors etc. is possible.

Claims (4)

1. Rodless working cylinder with a power take-off (3) which can be driven, by a piston arranged displaceably in a cylinder tube (5), directly by means of a power bridge or indirectly by means of a rope, band or the like, there being a guide rail (13; 2) which extends parallel to the cylinder tube (5) and with which rolling means (1a, 1b; 12a, 12b) connected to the power take-off (3) interact, characterized in that the cylinder tube (5) is made multisurfaced on the outside, in that a flat guide rule (13; 2) is fastened to at least one surface in such a way that its longitudinal sides project beyond the cylinder tube (5), and in that mounted in a cover plate (3a) connected to the power take-off are concave or convex rollers (1 a, 1b; 12a, 12b) which roll on the correspondingly shaped longitudinal sides of the guide rule (13, 2).
2. Rodless working cylinder according to Claim 1, characterized in that on each of the two sides of the guide rule (2) there is a ball-race bush (19a, 19b) which is guided on a correspondingly shaped track (20a, 20b) fastened to the outside of the cylinder tube (5), the ball-race bushes (19a, 19b) being connected to the power take-off (3) or to a further element.
3. Rodless working cylinder with a power take-off (3) which can be driven, by a piston arranged displaceably in a cylinder tube (5), directly by means of a power bridge or indirectly by means of a rope, band or the like, there being a ball-race bush (19a, 19b) which is connected to the power take-off (3) and which is guided on a correspondingly shaped track (20a, 20b) extending parallel to the cylinder tube (5), characterized in that the cylinder tube (5) is made multi-surfaced on the outside, in that a track (20a, 20b) for a ball-race bush (19a, 19b) is fastened directly to the cylinder tube (5) on each of at least two opposite surfaces, and in that the ball-race bushes (19a, 19b) are provided in a cover section (21) of the power take-off (3).
4. Rodless working cylinder according to one of Claims 1 to 3, characterized in that a braking and positioning device (6 to 10, 15, 16, 17) incorporated in the power take-off (3) is provided.
EP84108579A 1983-08-10 1984-07-20 Rodless working cylinder Expired EP0135041B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833328786 DE3328786A1 (en) 1983-08-10 1983-08-10 PISTONLESS WORK CYLINDER
DE3328786 1983-08-10

Publications (2)

Publication Number Publication Date
EP0135041A1 EP0135041A1 (en) 1985-03-27
EP0135041B1 true EP0135041B1 (en) 1988-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108579A Expired EP0135041B1 (en) 1983-08-10 1984-07-20 Rodless working cylinder

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EP (1) EP0135041B1 (en)
DE (2) DE3328786A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436977A1 (en) * 1984-10-09 1986-04-10 Antriebs Steuerungstech Ges LINEAR ACTUATOR
DE3504269A1 (en) * 1985-02-08 1986-08-21 ORIGA GmbH Pneumatik, 7024 Filderstadt PRESSURE CYLINDER
CA1260360A (en) * 1986-09-05 1989-09-26 Alan G. Dry Rodless cylinder
SE463325B (en) * 1988-11-14 1990-11-05 Monsun Tison Ab DEVICE FOR LINE MOVEMENT
US5275088A (en) * 1991-10-11 1994-01-04 Smc Kabushiki Kaisha Rodless cylinder
JP2575245B2 (en) * 1991-11-01 1997-01-22 エスエムシー株式会社 Rodless cylinder
DE69219278T2 (en) * 1991-11-11 1997-12-18 Smc K.K., Tokio/Tokyo Rodless cylinder
DE19611322C2 (en) * 1996-03-22 2000-05-25 Dowaldwerke Adolf Dowald Gmbh Drive and guidance system
US5868499A (en) * 1996-09-06 1999-02-09 Deutsche Star Gmbh Linear guiding unit
US6336393B1 (en) 1998-07-01 2002-01-08 Parker-Hannifin Corporation Rodless pneumatic cylinder
DE202006006447U1 (en) 2006-04-21 2006-07-13 Festo Ag & Co. Fluid operated linear drive device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104364A1 (en) * 1982-08-05 1984-04-04 Knorr-Bremse Ag Rodless fluidic motor with brake means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707679C (en) * 1935-02-05 1941-06-30 Francesco Merz Cylinder for a piston-operated acceleration device, in particular an aircraft sling
DE2908605A1 (en) * 1979-03-05 1980-09-11 Geb Kotz Rosa Mueller Free-piston pneumatic cylinder - has ball-mounted carriage running on guide rails parallel to cylinder
DE3124915C2 (en) * 1981-06-25 1984-10-31 Kaiser, Siegmund H., Ing.(grad.), 7440 Nürtingen Pressure cylinder with a longitudinally slotted cylinder tube closed at the end
DE3229305A1 (en) * 1982-08-05 1984-02-09 Knorr-Bremse GmbH, 8000 München Brake device for fluid-driven rodless working cylinders

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104364A1 (en) * 1982-08-05 1984-04-04 Knorr-Bremse Ag Rodless fluidic motor with brake means

Also Published As

Publication number Publication date
EP0135041A1 (en) 1985-03-27
DE3328786A1 (en) 1985-02-28
DE3471980D1 (en) 1988-07-14

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