EP0346504B1 - Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung - Google Patents

Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung Download PDF

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Publication number
EP0346504B1
EP0346504B1 EP88109346A EP88109346A EP0346504B1 EP 0346504 B1 EP0346504 B1 EP 0346504B1 EP 88109346 A EP88109346 A EP 88109346A EP 88109346 A EP88109346 A EP 88109346A EP 0346504 B1 EP0346504 B1 EP 0346504B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
assembly according
stroke
cylinder assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88109346A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0346504A1 (de
Inventor
Kurt Dipl.-Ing. Stoll
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Festo SE and Co KG filed Critical Festo SE and Co KG
Priority to DE8888109346T priority Critical patent/DE3868058D1/de
Priority to EP88109346A priority patent/EP0346504B1/de
Priority to ES198888109346T priority patent/ES2028184T3/es
Priority to AT88109346T priority patent/ATE72022T1/de
Publication of EP0346504A1 publication Critical patent/EP0346504A1/de
Application granted granted Critical
Publication of EP0346504B1 publication Critical patent/EP0346504B1/de
Priority to GR920400230T priority patent/GR3003792T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/086—Characterised by the construction of the motor unit the motor being of the rodless piston type, e.g. with cable, belt or chain with magnetic coupling
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

Definitions

  • the invention relates to a rodless piston-cylinder arrangement with a cylinder which contains a cylinder tube which is closed by a cylinder cover and in which there is a piston which can be actuated by pressure medium and which forms a drive part and has an inner driver magnet arrangement and which has an externally displaceably arranged on the cylinder tube.
  • An output part that can be connected to a load to be transported is assigned with an external driver magnet arrangement, the output part being magnetically coupled to the drive part with the drive part via the magnet arrangements, and with a stroke limiting device arranged on the outside of the cylinder and cooperating with the output part the movement path of an impact section arranged movably connected to the driven part has limit stops.
  • Rodless piston-cylinder arrangements are used primarily when relatively long stroke lengths have to be overcome and when piston rods protruding from the cylinder cannot be tolerated.
  • the piston which forms a drive part, can be displaced in the desired manner, at the same time moving an inner driver-magnet arrangement firmly connected to it.
  • On the outside of the cylinder tube there is an especially sleeve-shaped driven part, which coaxially surrounds the drive part and is equipped with a complementary outer driver-magnet arrangement. Because of the magnetic coupling the drive part and the driven part are connected to one another in a force-fitting manner, and the movement of the drive part is immediately followed by the driven part. A load to be transported can be attached to the stripping section.
  • a rodless piston-cylinder arrangement based on this functional principle of the type mentioned at the outset is described in GB-A-2 187 507. It is equipped with an external stroke limitation device in order to be able to variably specify the axial position assumed by the driven part at the end of the stroke. It has adjustable limit stops designed as threaded bolts which protrude into the movement path of an impact section which is provided on a housing of the driven part.
  • the stroke limiting device is designed as a turret stop and, for this purpose, has a plurality of limiting stops which are effective in the same direction of movement of the driven part and which alternately in one for the predetermined specification of different end positions of the driven part Stroke limiting position can be arranged in the movement path of the impact section, that the turret stop on the cylinder is fixed in such a way that its axis of rotation runs parallel to the direction of movement of the driven part, and that the turret stop is assigned a drive motor for motorized positioning of the limit stops in the respective stroke limiting position.
  • the fact that the turret stop is arranged directly on the cylinder results in an extremely compact, uniformly manageable unit that can be easily installed at the respective place of use without the need for complex adjustments on the part of the relative position between the cylinder and the turret stop.
  • the alignment of the axis of rotation of the turret stop, which is parallel to the direction of movement of the driven part, has a positive effect in this connection, above all on the bearing load. All in all, there is an extremely compact rodless piston-cylinder arrangement with an integrated turret stop, which enables extremely variable operation with easy handling.
  • Turret stops are generally known in the field of machine tool construction. Your attachment to a cylinder for the purpose A variable stroke limitation was not previously planned, however.
  • the drive motor of the turret stop is designed as a stepping motor, reliable positioning of the limit stops can be achieved without complex control.
  • the turret stop can be actuated, for example, depending on specific stroke positions of the driven part.
  • At least one limit stop for fine adjustment of the stop position specified by it is adjustable and adjustable in the direction of movement of the driven part. It is thus possible to carry out a rough adjustment by actuating the turret stop and corresponding positioning of the limit stops and to achieve a particularly fine adjustment with the limit stops which are additionally adjustable relative to the turret stop.
  • the fine adjustment is preferably carried out non-manually via an adjustment device, so that remote-controlled fine adjustment can be carried out if necessary.
  • an adjustment device One is particularly variable in this context if each limit stop has its own adjustment device.
  • the adjustable stroke range can be changed of the stripping section can be set even more flexibly.
  • an embodiment is also advantageous in which there is a separate stroke limiting device for each stroke direction of the driven part.
  • FIGS. 1 and 2 It comprises a cylinder 1 which contains a cylinder tube 2, which is preferably circular in cross section, and has two cylinder covers 3 which close the two axial tube openings in a pressure-tight manner. Inside the cylinder tube is a piston, hereinafter referred to as drive part 4, which divides the tube interior into two working spaces 5, 5 'in a pressure-tight manner. Both working spaces 5, 5 'are each connected to a pressure medium connection 6, 6', which can be connected to a pressure medium source or sink, not shown, and via a channel 7, 7 'inside the respective cylinder cover 3 with the associated working space 5 , 5 'communicates.
  • drive part 4 Inside the cylinder tube is a piston, hereinafter referred to as drive part 4, which divides the tube interior into two working spaces 5, 5 'in a pressure-tight manner.
  • Both working spaces 5, 5 ' are each connected to a pressure medium connection 6, 6', which can be connected to a pressure medium source or sink, not shown, and via
  • the drive part 4 has an essentially cylindrical shape.
  • an output part 10 On the outside of the cylinder tube 2 there is an output part 10, which is preferably designed as a hollow cylindrical body enclosing the cylinder tube 2, as is the case with the exemplary embodiment. Its length corresponds essentially to that of the drive part 4, the drive part 4 and the driven part 10 being radially opposite one another in a coaxially surrounding manner.
  • the driven part 10 is displaceable according to the double arrow 9 mounted on the cylinder barrel 2.
  • the drive part 4 is provided with an inner driver magnet arrangement 14 and the driven part arranged on the outside has an outer driver magnet arrangement 15. This ensures that the drive part 4 and the driven part 10 are magnetically positively coupled to one another so that the drive movement of the drive part 4 is transmitted directly to the driven part 10, which thus executes a corresponding movement. Since the driven part 10 is suitable for receiving a load, which is not shown in detail, it is therefore possible to carry out a load transport over a relatively large distance with the aid of the arrangement.
  • An embodiment of the type shown is particularly favorable with regard to the acting magnetic force, in which both magnet arrangements have a hollow cylindrical structure and enclose one another coaxially.
  • both magnet arrangements have a hollow cylindrical structure and enclose one another coaxially.
  • other configurations are also possible without departing from the principle of the invention, as the arrangement form shown only shows one possible example of a rodless piston-cylinder arrangement which can be used in the principle of the invention.
  • the rodless piston-cylinder arrangement according to the invention is assigned a device for stroke limitation 17, which is located on the outside of the cylinder 1 and which cooperates with the driven part 10 .
  • the device for stroke limitation 17 e.g. can be attached to cylinder 1 in the manner of an additional part, which also allows retrofitting of older models of piston-cylinder arrangements. Furthermore, it is not necessary that the device for stroke limitation 17 is connected to the piston-cylinder arrangement, as is the case with the exemplary embodiment according to FIGS. 1 and 2, but it can also be a separate one in addition to the Act arrangement located act, which can be arranged in any relative positions with respect to the cylinder 1. This allows the device 17 to be easily adjusted.
  • the device for limiting the stroke 17 is fixed and detachably arranged on the cylinder 1, it also being possible here to change the position relative to the cylinder in the axial direction 8.
  • the device 17 can e.g. can be detachably fixed at any point on the cylinder or cylinder tube by means of a clamping device (not shown in more detail).
  • the device for stroke limitation 17 contains a housing 18 which is fixedly connected to a cylinder cover 3 via a holder 13.
  • the side of the housing 18 facing the opposite cylinder cover 3 is assigned a rotating part 19 which is rotatably mounted in the housing 18 via a drive shaft 20.
  • the axis of rotation 21 preferably runs parallel to the longitudinal direction 8 of the cylinder tube 2.
  • a plurality of limit stops 22 are now arranged on the rotary part 19 on the axial side facing the movement unit 16. They are fixed along a circular line 23, preferably evenly distributed, on the rotating part 19, the circular line 23, viewed in the axial direction 8, 21, intersecting the movement path 24 of an impact part 25 which is firmly connected to the driven part 10.
  • the rotating part 19 carries five Pieces of limit stops 22 evenly distributed along the circular line 23, which are expediently designed in the form of a rod and project away from the rotating part, wherein they are aligned parallel to the axis of rotation 21.
  • the length of the individual limit stops 22 is different from one another, so that each limit stop 22 specifies a specific stop position.
  • the driven part 10 assumes an end position on impact which is more or less far from the associated cylinder cover 3. It is therefore possible, alternately or alternatively, to bring one or the other limiting stop 22 into the stroke limiting position 29 by rotating the rotating part 19, so that the desired end position of the movement unit 16 relative to the cylinder 1 is assumed in the respective application.
  • the rotating part 19 thus together with the limit stops 22 practically represents a turret stop, which is characterized by reliable operation with a simple structure.
  • the impact section 25 can be arranged directly on the driven part 10, for example on the facing annular end face of its sleeve body.
  • an additional impact part 30 is provided in the driven part 10, which is designed in the form of a lug and protrudes outwards in the radial direction. It points in the same direction as the device 17 with respect to the cylinder 2, wherein an arrangement is preferably selected in which, in the position of use of the piston-cylinder arrangement, both the stroke limiting device 17 and the impact part 30 point vertically downward.
  • the impact part 30 in the form of an annular collar surrounding the cylinder tube, so that independently of The respective rotational position of the driven part 10 relative to the cylinder tube 2 ensures that the impact part 25 arranged on the impact part 30 hits the desired limit stop 22.
  • the rotating part 19 is drum-shaped, which reduces the required space.
  • a corresponding signal transmitter is indicated at 31 in FIG. 2.
  • a stepping motor 32 indicated by dashed lines in FIG. 1 is preferably used as the drive motor, which is arranged in particular in the housing 18 and which e.g. can be connected to the unit 31 via electrical lines 40.
  • the rotary part can continue to clock, so that a reliable positioning of the respective stop 22 in the stroke limitation position 29 is possible. It is expedient to set the switching steps in accordance with the division of the circular line 23 made by the stops 22, so that readjustments are unnecessary.
  • the limit stops 22 are rigid, but preferably arranged interchangeably on the rotating part 19, the exemplary embodiments according to FIGS. 3 and 4 provide that the limiting stops 22 are arranged on the rotating part 19 in an adjustable and adjustable manner. It is therefore possible both times to continuously adjust the stop position of the respective limit stops with respect to the rotating part 19, which increases the flexibility of the entire system.
  • the stops 22 are set manually.
  • they are rod-shaped or pin-shaped and provided with an external thread 33 with which they can be screwed into a corresponding threaded bore 34 of the rotating part 19.
  • the locking can take place via a lock nut 35, which runs on the external thread 33 and can be countered against an extension 36 of the threaded bore 34.
  • the respective limit stop 22 expediently carries an external polygon, which permits the attack of a screwing tool.
  • each of the limit stops 22 is assigned a separate adjusting device 38, which is expediently integrated in the drum-shaped rotating part 19 (shown in dashed lines).
  • This adjustment device works in particular on an electro-mechanical basis, for example via an electric motor or an electro-magnetic valve, the corresponding supply lines being indicated at 39.
  • the to construct the two magnet arrangements 14, 15 in each case from ring magnets arranged one after the other in the axial direction, it being possible in particular for magnetizable intermediate disks to be arranged between axially adjacent ring magnets.
  • an axial polarization is expediently chosen, with pole ends of the same name of adjacent ring magnets facing each other within a respective magnet arrangement.
  • the opposite ends of the poles of the inner and outer magnet arrangements 14, 15 are radially opposite each other.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP88109346A 1988-06-11 1988-06-11 Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung Expired - Lifetime EP0346504B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8888109346T DE3868058D1 (de) 1988-06-11 1988-06-11 Kolbenstangenlose kolben-zylinder-anordnung mit einer vorrichtung zur hubbegrenzung.
EP88109346A EP0346504B1 (de) 1988-06-11 1988-06-11 Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung
ES198888109346T ES2028184T3 (es) 1988-06-11 1988-06-11 Disposicion de piston-cilindro sin vastago de piston, con un dispositivo limitador de carrera.
AT88109346T ATE72022T1 (de) 1988-06-11 1988-06-11 Kolbenstangenlose kolben-zylinder-anordnung mit einer vorrichtung zur hubbegrenzung.
GR920400230T GR3003792T3 (es) 1988-06-11 1992-02-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88109346A EP0346504B1 (de) 1988-06-11 1988-06-11 Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung

Publications (2)

Publication Number Publication Date
EP0346504A1 EP0346504A1 (de) 1989-12-20
EP0346504B1 true EP0346504B1 (de) 1992-01-22

Family

ID=8199049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109346A Expired - Lifetime EP0346504B1 (de) 1988-06-11 1988-06-11 Kolbenstangenlose Kolben-Zylinder-Anordnung mit einer Vorrichtung zur Hubbegrenzung

Country Status (5)

Country Link
EP (1) EP0346504B1 (es)
AT (1) ATE72022T1 (es)
DE (1) DE3868058D1 (es)
ES (1) ES2028184T3 (es)
GR (1) GR3003792T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030069687A (ko) * 2002-02-22 2003-08-27 한국기계연구원 다단 위치 제어 실린더

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687134B1 (fr) * 1992-02-11 1998-04-30 Maurice Prodel Dispositif d'actionnement a mouvement de translation.
JP3543065B2 (ja) 1999-04-16 2004-07-14 Ｓｍｃ株式会社 直線作動装置
JP4273476B2 (ja) * 2000-02-18 2009-06-03 Ｓｍｃ株式会社 リニアアクチュエータ
US6905108B2 (en) * 2001-11-15 2005-06-14 Fisher Controls International Llc. Control valve flow adjustment device
GB0301095D0 (en) * 2003-01-17 2003-02-19 Gibbs Tech Ltd Actuator
GB2463281B (en) * 2008-09-08 2011-01-19 Sew Hing Woo A cleaning unit to clean condenser fins
AT512663B1 (de) 2012-08-08 2013-10-15 Trumpf Maschinen Austria Gmbh Zylinder-Kolben-Einheit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR988036A (fr) * 1949-04-07 1951-08-22 Butée réglable de tour parallèle sur barre de chariotage pour débrayage automatique
FR1206562A (fr) * 1958-11-07 1960-02-10 Appareil à butées multiples réglables pour machines outils
DE3262822D1 (en) * 1981-10-30 1985-05-02 Bosch Gmbh Robert Pneumatic cylinder
AT390597B (de) * 1984-02-06 1990-05-25 Sticht Walter Vorrichtung zum positionieren bzw. arretieren von werkstuecken
JPH0419214Y2 (es) * 1986-01-21 1992-04-30
DE3605308A1 (de) * 1986-02-19 1987-08-20 Hornberger Maschbau Gmbh Vorrichtung zum positionieren eines bearbeitungswerkzeuges, eines bearbeitungsaggregates, einer hilfsvorrichtung oder dergleichen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030069687A (ko) * 2002-02-22 2003-08-27 한국기계연구원 다단 위치 제어 실린더

Also Published As

Publication number Publication date
ES2028184T3 (es) 1992-07-01
ATE72022T1 (de) 1992-02-15
GR3003792T3 (es) 1993-03-16
DE3868058D1 (de) 1992-03-05
EP0346504A1 (de) 1989-12-20

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