EP0346504A1 - Vérin sans tige comportant un dispositif de limitation de la course - Google Patents

Vérin sans tige comportant un dispositif de limitation de la course Download PDF

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Publication number
EP0346504A1
EP0346504A1 EP88109346A EP88109346A EP0346504A1 EP 0346504 A1 EP0346504 A1 EP 0346504A1 EP 88109346 A EP88109346 A EP 88109346A EP 88109346 A EP88109346 A EP 88109346A EP 0346504 A1 EP0346504 A1 EP 0346504A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
arrangement according
stroke
cylinder arrangement
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.)
Granted
Application number
EP88109346A
Other languages
German (de)
English (en)
Other versions
EP0346504B1 (fr
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/fr
Priority to AT88109346T priority patent/ATE72022T1/de
Priority to ES198888109346T priority patent/ES2028184T3/es
Publication of EP0346504A1 publication Critical patent/EP0346504A1/fr
Application granted granted Critical
Publication of EP0346504B1 publication Critical patent/EP0346504B1/fr
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 rod-free piston-cylinder arrangement having a device for limiting the stroke, having a cylinder which contains a cylinder tube closed by a cylinder cover, in which there is a piston which can be actuated by pressure medium and forms a drive part and has an inner driver-magnet arrangement, the an output part which is arranged so as to be displaceable on the outside of the cylinder tube and which can be connected to a load to be transported is associated with an external driver magnet arrangement, the output part being magnetically coupled to the drive part with the drive part via the magnet arrangements.
  • 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
  • the piston 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 external driver magnet arrangement. Due to 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.
  • the device for limiting the stroke is arranged on the outside of the cylinder and cooperates with the driven part.
  • the device for stroke limitation can be positioned as required at the desired location on the outside of the cylinder, and the movement unit experiences a stroke limitation by the output part running on the outside of the cylinder tube together with the stroke limitation device is working.
  • a device for limiting the stroke is obtained in a simple and inexpensive construction, and any piston-cylinder arrangement of the type in question can be easily retrofitted.
  • the device for limiting the stroke is expediently designed in such a way that different end positions of the driven part can be specified in one direction of movement, which further increases the possible variations in terms of the stroke limitation.
  • the device for limiting the stroke expediently contains at least one limit stop which can be arranged in the path of movement of a collision part which is movable and in particular firmly connected to the impact part, preferably with a plurality of limit stops which specify different stop positions and which alternately provide different end positions of the output part the movement path of the impact section can be arranged.
  • the device for limiting the stroke can remain stationary with respect to the cylinder, and the end position of the movement unit can be varied easily by simply changing the position of the limit stops.
  • the limit stops are arranged on a rotatable rotary part arranged next to the cylinder, by means of which each limit stop can be positioned by rotation in a stroke limiting position projecting into the path of movement of the impact part of the driven part.
  • the rotating part is designed in the form of a disk or a drum.
  • the limit stops are preferably arranged in a uniformly distributed manner along a circular line, which allows a plurality of limit stops to be arranged in a confined space without mutual hindrance taking place.
  • the limit stops protrude more or less in the direction of the driven part, in particular starting from the rotating part, depending on the desired end position specification, and thereby prescribe a respective stop position.
  • the limit stops are particularly adjustable, so that the stop position of each limit stop can be adjusted continuously and sensitively. It is thus possible to roughly preset a respective stop position by rotating the rotary part and correspondingly positioning the limit stops and to carry out an additional fine adjustment by means of the adjustability of the limit stops with respect to the rotary part.
  • each individual one of these limiting stops is assigned an expediently electrically or electromagnetically operating adjusting device for setting the stop position, which is arranged in or on the rotating part. Without interrupting the work processes of the piston-cylinder arrangement, fine adjustment of the respective stop position can thus be carried out virtually by remote control.
  • the limit stops are expediently rod-shaped or pin-shaped and can be arranged on the rotating part in the context of a screw connection for adjustment thereof.
  • the rotating part is rotated to position the individual limit stops in the stroke limiting position by motor means, in particular the use of a stepping motor is expedient, in which the switching steps correspond in particular to the spacing between the limit stops.
  • the impact part can be located on a stop part projecting essentially radially from the driven part.
  • a device for limiting the stroke for each of the possible directions of movement of the movement unit or even only for one of these possible directions of movement is expediently located in the area of the respective cylinder cover and can be firmly attached to it.
  • 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 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 enclosing 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 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.
  • the rotating part can continue to clock, so that a reliable positioning of the respective stop 22 in the stroke limiting 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 two magnet arrangements 14, 15 in each case from ring magnets arranged successively 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.

Landscapes

  • 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 Vérin sans tige comportant un dispositif de limitation de la course Expired - Lifetime EP0346504B1 (fr)

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 (fr) 1988-06-11 1988-06-11 Vérin sans tige comportant un dispositif de limitation de la course
AT88109346T ATE72022T1 (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.
GR920400230T GR3003792T3 (fr) 1988-06-11 1992-02-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88109346A EP0346504B1 (fr) 1988-06-11 1988-06-11 Vérin sans tige comportant un dispositif de limitation de la course

Publications (2)

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

Family

ID=8199049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109346A Expired - Lifetime EP0346504B1 (fr) 1988-06-11 1988-06-11 Vérin sans tige comportant un dispositif de limitation de la course

Country Status (5)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687134A1 (fr) * 1992-02-11 1993-08-13 Prodel Maurice Dispositif d'actionnement a mouvement de translation.
US6308821B1 (en) 1999-04-16 2001-10-30 Smc Kabushiki Kaisha Linear working apparatus
WO2003042549A1 (fr) * 2001-11-15 2003-05-22 Fisher Controls International Llc Dispositif de reglage du debit a soupape de commande
GB2397344A (en) * 2003-01-17 2004-07-21 Gibbs Tech Ltd Retractable suspension actuator locking
WO2010026399A1 (fr) * 2008-09-08 2010-03-11 Sew Hing Woo Système de nettoyage
DE10107474B4 (de) * 2000-02-18 2013-05-08 Smc K.K. Linearstellglied
WO2014022871A1 (fr) 2012-08-08 2014-02-13 Trumpf Maschinen Austria Gmbh & Co. Kg. Unité cylindre-piston

Families Citing this family (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

Citations (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
EP0078496A1 (fr) * 1981-10-30 1983-05-11 Robert Bosch Gmbh Cylindre pneumatique
FR2559086A1 (fr) * 1984-02-06 1985-08-09 Sticht Walter Dispositif pour le positionnement ou respectivement le blocage de pieces
DE3605308A1 (de) * 1986-02-19 1987-08-20 Hornberger Maschbau Gmbh Vorrichtung zum positionieren eines bearbeitungswerkzeuges, eines bearbeitungsaggregates, einer hilfsvorrichtung oder dergleichen
GB2187507A (en) * 1986-01-21 1987-09-09 Smc Corp Hydraulic cylinder with piston coupled magnetically to externally guided driven member

Patent Citations (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
EP0078496A1 (fr) * 1981-10-30 1983-05-11 Robert Bosch Gmbh Cylindre pneumatique
FR2559086A1 (fr) * 1984-02-06 1985-08-09 Sticht Walter Dispositif pour le positionnement ou respectivement le blocage de pieces
GB2187507A (en) * 1986-01-21 1987-09-09 Smc Corp Hydraulic cylinder with piston coupled magnetically to externally guided driven member
DE3605308A1 (de) * 1986-02-19 1987-08-20 Hornberger Maschbau Gmbh Vorrichtung zum positionieren eines bearbeitungswerkzeuges, eines bearbeitungsaggregates, einer hilfsvorrichtung oder dergleichen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 381 (M-547)[2438], 19. Dezember 1986; & JP-A-61 171 908 (MATSUSHITA ELECTRIC WORKS LTD) 02.08.1986 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687134A1 (fr) * 1992-02-11 1993-08-13 Prodel Maurice Dispositif d'actionnement a mouvement de translation.
US6308821B1 (en) 1999-04-16 2001-10-30 Smc Kabushiki Kaisha Linear working apparatus
DE10017959C2 (de) * 1999-04-16 2003-03-27 Smc Kk Lineararbeitsvorrichtung
DE10107474B4 (de) * 2000-02-18 2013-05-08 Smc K.K. Linearstellglied
WO2003042549A1 (fr) * 2001-11-15 2003-05-22 Fisher Controls International Llc Dispositif de reglage du debit a soupape de commande
US6905108B2 (en) 2001-11-15 2005-06-14 Fisher Controls International Llc. Control valve flow adjustment device
GB2397344A (en) * 2003-01-17 2004-07-21 Gibbs Tech Ltd Retractable suspension actuator locking
GB2397344B (en) * 2003-01-17 2005-08-24 Gibbs Tech Ltd Amphibious vehicle
WO2010026399A1 (fr) * 2008-09-08 2010-03-11 Sew Hing Woo Système de nettoyage
WO2014022871A1 (fr) 2012-08-08 2014-02-13 Trumpf Maschinen Austria Gmbh & Co. Kg. Unité cylindre-piston

Also Published As

Publication number Publication date
EP0346504B1 (fr) 1992-01-22
ES2028184T3 (es) 1992-07-01
GR3003792T3 (fr) 1993-03-16
ATE72022T1 (de) 1992-02-15
DE3868058D1 (de) 1992-03-05

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