EP0355179A1 - Disposition de vérin linéaire - Google Patents

Disposition de vérin linéaire Download PDF

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Publication number
EP0355179A1
EP0355179A1 EP88113407A EP88113407A EP0355179A1 EP 0355179 A1 EP0355179 A1 EP 0355179A1 EP 88113407 A EP88113407 A EP 88113407A EP 88113407 A EP88113407 A EP 88113407A EP 0355179 A1 EP0355179 A1 EP 0355179A1
Authority
EP
European Patent Office
Prior art keywords
housing
linear drive
motor
drive device
control device
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
EP88113407A
Other languages
German (de)
English (en)
Other versions
EP0355179B1 (fr
Inventor
Kurt 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 EP88113407A priority Critical patent/EP0355179B1/fr
Priority to ES198888113407T priority patent/ES2030811T3/es
Priority to DE8888113407T priority patent/DE3870876D1/de
Priority to JP1183533A priority patent/JP2928276B2/ja
Priority to US07/389,004 priority patent/US4987822A/en
Priority to KR1019890011738A priority patent/KR950003066B1/ko
Publication of EP0355179A1 publication Critical patent/EP0355179A1/fr
Application granted granted Critical
Publication of EP0355179B1 publication Critical patent/EP0355179B1/fr
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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S91/00—Motors: expansible chamber type
    • Y10S91/04—Magnets

Definitions

  • the invention relates to a linear drive device with a linear motor, in particular pneumatically actuated by pressure medium, which has a housing in which there is an axially displaceable piston which is connected to an actuating rod protruding from the motor housing on one working side, with a e.g. designed as a valve device control device for motor control and with a responsive sensor device at certain positions of the actuating rod.
  • the linear motor is regularly designed as a piston-cylinder unit whose piston rod, which is connected to the piston and protrudes from the cylinder, represents the actuating rod which can be connected to a component to be moved or another power take-off.
  • the linear motor is brought to the desired location, and the pressure medium required for actuation, eg compressed air, is brought in or out via pressure medium lines or hoses.
  • Control devices are used to control the pressure medium flow, which are often designed as valve devices and can be actuated electrically, for example.
  • a sensor device can be present which can contain one or more sensors, for example those working on an electrical, magnetic, pneumatic or mechanical basis, with which predetermined positions of the actuating rod can be detected in order to switch the control device as a function thereof switch.
  • Previous linear drive devices are composed of a large number of individual assemblies, the linear motor, the control device and the sensor device, for example, being formed separately from one another and being installed separately. The work required for this takes a lot of time, and extensive cable and wire laying work is also essential to connect the individual components with each other in terms of circuitry. In addition to the complex assembly, the not inconsiderable space requirement also has a negative impact here, and the cable connections can also be easily damaged by moving machine parts.
  • This goal is achieved in that the linear motor, the control device and the sensor device are firmly connected to one another and combined into a jointly manageable working unit, and in that the control device and the sensor device are arranged on the control side of the linear motor opposite the working side.
  • the linear motor and the two devices are thus combined to form a compact work unit that can be easily assembled as a whole at the respective place of use.
  • the connections required between the individual assemblies may already have been completed beforehand, so that in the assembled state there is only a central connection to the electrical and / or pneumatic system.
  • the linear drive device represents a complete drive solution that is adapted to the respective intended use, which can also be sold as a complete solution, so that the assembly of a linear drive device no longer requires a large number of individual orders and complex, error-prone self-assembly, as was previously the case.
  • the control device and the sensor device also on the Working side opposite control side of the linear motor are obtained, you get a slim design of the drive device, which can still be accommodated even in cramped conditions, the control and sensor devices are simultaneously covered and protected by the linear motor.
  • the length of the line connection network between the individual components can be greatly reduced because of their close proximity to one another.
  • the development according to claim 2 allows simple replacement of individual components in the event of a defect.
  • the development according to claim 3 enables a particularly narrow construction of the drive device.
  • both the control device and the sensor device are optimally protected, and the linear drive device has a relatively smooth surface on the outside, which considerably facilitates handling.
  • the development according to claim 8 has the advantage that no additional space is required for taking a switching signal from the actuating rod, since existing installation space for the control device and the sensor device is taken into account.
  • the linear drive device practically receives a three-block structure with a particularly slim outer contour.
  • the arrangement according to claim 12 is particularly short.
  • the development according to claim 13 allows a simple, momentary connection of the individual components of the linear drive device to existing pressure medium and / or electrical lines, for. B. from a bus. This can be electrical and / or pneumatic multi-pin plug are used, so that mix-ups are excluded.
  • a particular advantage of the invention is that the working side of the linear drive device can remain free of any add-on components and there is sufficient space for the power take-off to be actuated.
  • the individual components are outside the working area of the drive device, so that damage is excluded from the outset.
  • the linear drive devices 1, 1 ', 1 ⁇ shown in FIGS. 1 to 3 each contain a linear motor 2, which is expediently designed in the manner of a piston-cylinder unit. It has a motor housing 3 designed in the manner of a cylinder, which encloses a piston chamber 4, in which there is a piston 6, which can be moved back and forth in the axial direction according to double arrow 5.
  • the piston 6 seals two cylinder spaces 7, 8 from one another in a sealed manner.
  • the cross section of the piston chamber 4 is expediently circular-cylindrical, which simplifies production, and the outer circumference 9 of the motor housing 3 is also kept circular-cylindrical in the exemplary embodiment.
  • the outer circumference can be square or rectangular in cross-section, so that the motor housing 3 has a cuboid shape overall.
  • the piston seals are not shown in the figures, their design is known to the person skilled in the art.
  • actuating rod 14 which runs coaxially to the piston chamber 4 and which crosses the associated cylinder chamber 8 in the longitudinal direction and penetrates the facing end wall 15 of the motor housing 3 with sealing and being guided so as to be displaceable to the surroundings.
  • the end wall 15 can be an integral part of the motor housing 3, but it can also be a separate and in particular detachably fixed cover.
  • the penetration point of the piston rod is indicated at 17; here too, seals have been omitted for the sake of simplicity.
  • the side on which the actuating rod 14 protrudes from the motor housing 3 represents the working side 18 of the linear drive devices 1, 1 ', 1 ⁇ .
  • the actuating rod 14 can be connected to a component to be moved or any power take-off, which in Fig. 1 is indicated by dashed lines at 19. If the two cylinder spaces 7, 8 are filled or ventilated with pressure medium in a suitable manner via corresponding connection openings 20, 21, the piston 6, together with the firmly attached actuating rod 14, performs an axial displacement movement indicated by a double arrow 5, within the scope of which the respective decrease in force 19 is moved in a corresponding manner.
  • the two cylinder spaces 7, 8 each represent work spaces, whereas, in the case of modifications of the device according to the invention, not shown, one of the two spaces can also remain depressurized when the piston is returned to an initial position by actuation the actuating rod 14 is effected from the outside or via a return spring.
  • control device 22 The control of the pressure medium supply and discharge with respect to the two cylinder spaces 7, 8 is carried out by a schematically indicated control device 22.
  • This is preferably a valve device containing one or more valves, the actuation of which is carried out electrically, and corresponding electrical connection cables are shown in FIGS 1 and 2 indicated by dashed lines at 23.
  • supply lines 24 are connected to the control device 22 (shown in broken lines in FIG. 2), which lead to a pressure medium source 25 and / or pressure medium sink 26, both of which are indicated schematically.
  • the respective linear drive device 1, 1 ', 1 ⁇ preferably also has a sensor device 31 (not shown in Fig. 3) with which certain, previously definable displacement positions of the piston 6 and the actuating rod 14 can be detected, depending on trigger certain operational positions of external or internal components or components.
  • the respective signal emitted by the sensor device 31 at the detection times is used internally in that the signals are used to actuate the control device 22.
  • the sensor device 31 for example, end positions of the piston 6, but also intermediate positions, can be detected.
  • the linear motor 2, the control device 22 and the sensor device 31 of the respective Linear drive device 1, 1 ', 1 ⁇ are firmly connected to one another and thus form a compact work unit within which they can be handled together.
  • the work unit thus represents a summary of three components 2, 22, 31 in the exemplary embodiments, which can be assembled uniformly at the place of use, so that complex individual assembly consisting of a large number of individual components is unnecessary.
  • the control device 22 and the sensor device 31 are each arranged on the control side 28 of the linear motor 2 opposite the working side 18, so that the working side 18 can remain free of additional components, which improves the mounting options and damages the devices 22 , 31 is excluded by moving components.
  • a quick exchange can be carried out in the event of a defect, and individual components can also be replaced if necessary in adaptation to the respective operating conditions.
  • the sensor device 31 shown in the exemplary embodiments according to FIGS. 1 and 2 is particularly advantageous. It contains several, for example two, sensors 32 which are designed as proximity switches which can be switched without contact. They work together with a switching section 33, which consists of magnetic material or at least contains magnetic components.
  • the switching section 33 is attached to one end region of a switching rod 34, which is fixed in particular in the same way as the actuating rod 14 with its opposite end on the piston 6 on the axial side 35 opposite the actuating rod 14.
  • Both rods 14, 34 are preferably arranged coaxially to one another, and it can be two components which are connected to one another and on which the piston 6 is subsequently mounted.
  • the rods 14, 34 can also be separate components which are firmly connected to the piston 6.
  • the switching rod 34 penetrates the End wall 15 opposite axial end wall 36 of the motor housing 3, wherein guide and sealing devices, also not shown, are provided in the penetration area.
  • the switching part 33 accordingly carries out a corresponding axial movement, and the sensors 32 arranged in the axial direction 5 laterally next to their movement path emit a signal at the point in time at which they are radially opposite the switching part 33.
  • the control device 22 and the sensor device 31 are accommodated in a common device housing 37, 37 '.
  • the device housing 37 is a separate component with respect to the motor housing 3, which is fixed to the motor housing 3 and in particular is detachably connected here. It is attached to the motor housing 3 on the control side 28, e.g. as shown in the manner of a flange connection by means of screw connections 38. Since the same outer contour and the same transverse dimensions as for the motor housing 3 have been chosen for the device housing 37, the overall result is an elongated work unit which is narrow across the longitudinal direction.
  • the device housing 37 preferably closes the installation space 39 for the devices 22, 31 from the outside, so that no contamination can occur and trouble-free operation is ensured.
  • One end wall 36 of the motor housing 3 expediently forms a closure cover for the flanged-on device housing 37.
  • the device housing is at least partially formed by the motor housing.
  • a housing 40 which holds both the motor housing 3 and the control device 22 and the sensor device 31 protectively encased.
  • the enveloping housing 40 thus simultaneously forms the device housing 37 ', but which also contains the motor housing 3.
  • both the motor housing 3 and a device housing surrounding the two devices 22, 31 are housed together in an enveloping protective housing.
  • sensors 32 are adjustable in the direction of movement of the shift rod 34, so that the switching time can be variably adjusted.
  • the sensors 32 in the embodiment according to FIG. 1 are adjustably arranged on a longitudinal guide 44 on the inside of the device housing 37.
  • the sensors 32 are arranged on the inside of the enveloping housing 40 and can also be adjustable in a corresponding manner.
  • control device 22 is expediently also fixed on the inside of the device housing 37. It is provided that the control device 22 and the sensor device 31 lie opposite one another transversely to the longitudinal direction 5 and in particular diametrically, so that a movement space 45 for the shift rod 34 remains between the two devices 22, 31. In this way, a short, compact arrangement can be achieved, and since the subunit of the working unit consisting of control device 22 and sensor device 31 is practically completely covered by the motor housing 3 in the longitudinal direction of the linear motor 2 from the working side 18, a slim, outward jagged arrangement.
  • FIG. 4 schematically shows the arrangement of the linear motor 2, the control device 22 and the sensor device 31 within the work unit the linear drive device 1 is indicated, and a three-block arrangement can be seen in which the two devices 22, 31, which are arranged next to one another transversely to the longitudinal direction 5, follow at the same time in the axial direction of view 46 of the linear motor 2.
  • FIG. 5 Another arrangement is shown schematically in FIG. 5, in which the linear motor 2, the sensor device 31 and the control device 22 also represent a three-block unit, the individual components of which are arranged one behind the other in the axial direction 5. This embodiment allows a further reduction in the transverse dimensions.
  • the control device 22 and sensor device 31 are expediently fastened to the inside of this housing 40.
  • the motor housing 3 can expediently be flanged to an end face 41 of the housing 40, the housing 40 having a through opening for the actuating rod 14.
  • the pressure medium connection between the control device 22 and the connection openings 20, 21 on the motor housing 3 takes place via loosely laid pressure medium lines 29. Because of the compact arrangement, the length of the lines can be kept very short, and through the individual housings they can be housed at least partially protected from external influences.
  • the pressure medium lines 29 are designed in the form of pressure medium channels 30 which run in the wall of the motor housing 3 and partially of the device housing 37, so that external lines can be dispensed with if the control device 22 is arranged accordingly. This makes assembly considerably easier. It is also possible, to move to the motor housing 3 by the control device 22 via pressure medium lines, from where the connection to the cylinder spaces 7, 8 is then established via channels formed only in the motor housing 3.
  • connection options 47 shown in dashed lines are provided in FIGS. 1 and 2, which are preferably combined in the form of plug-type connection units and fixed to the device housing 37, 37 '. They are in permanent connection with the corresponding points of the two devices 22, 31 via the cables 23 or supply lines 24 and allow external lines 49, which lead to the pressure medium source 25, pressure medium sink 26 or e.g. an electronic control unit 48 (indicated by dashed lines).
  • connection unit allows the lines 49 to be quickly detachably coupled within the framework of central plug connections, e.g. so-called pneumatic and / or electrical multi-pin plug devices can be used. Connection to a bus is therefore possible without any problems. It is advantageous in all of this if the connection options 47 are arranged on the connection side 50 opposite the working side 18, so that there is no increase in the overall width of the linear drive device even when the connection is established.
  • the invention thus combines various devices to form a structural unit, devices with three or four functional levels being present, depending on the embodiment. 1, 2 and 4, there are three levels, the first level being represented by the linear motor 2, the actuator, and the second level by those from control device (processor) and sensor device existing subunit and the third level of the level of connection options 47, the bus level. 5 there are four levels, since the devices 22, 31 are arranged axially one after the other.
  • a major advantage of the invention is that the user can get a complete solution tailored to his problem from a single source, whereas in the past he had to order, store, assemble and maintain a large number of individual components in order to obtain the desired equipment. Commissioning is also much easier with the solution according to the invention, since practically only two plug connections (pneumatic and electrical multi-pin plug) have to be made in order to make the device ready for operation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Catching Or Destruction (AREA)
  • Colloid Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Linear Motors (AREA)
EP88113407A 1988-08-18 1988-08-18 Disposition de vérin linéaire Expired - Lifetime EP0355179B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP88113407A EP0355179B1 (fr) 1988-08-18 1988-08-18 Disposition de vérin linéaire
ES198888113407T ES2030811T3 (es) 1988-08-18 1988-08-18 Dispositivo lineal de impulsion.
DE8888113407T DE3870876D1 (de) 1988-08-18 1988-08-18 Linear-antriebseinrichtung.
JP1183533A JP2928276B2 (ja) 1988-08-18 1989-07-14 リニア駆動装置
US07/389,004 US4987822A (en) 1988-08-18 1989-08-02 Linear actuator
KR1019890011738A KR950003066B1 (ko) 1988-08-18 1989-08-18 선형-구동장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88113407A EP0355179B1 (fr) 1988-08-18 1988-08-18 Disposition de vérin linéaire

Publications (2)

Publication Number Publication Date
EP0355179A1 true EP0355179A1 (fr) 1990-02-28
EP0355179B1 EP0355179B1 (fr) 1992-05-06

Family

ID=8199209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113407A Expired - Lifetime EP0355179B1 (fr) 1988-08-18 1988-08-18 Disposition de vérin linéaire

Country Status (6)

Country Link
US (1) US4987822A (fr)
EP (1) EP0355179B1 (fr)
JP (1) JP2928276B2 (fr)
KR (1) KR950003066B1 (fr)
DE (1) DE3870876D1 (fr)
ES (1) ES2030811T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200382A (nl) * 1991-03-14 1992-10-01 Festo Kg Lineaire aandrijfinrichting.
DE4128959A1 (de) * 1991-08-30 1993-03-04 Schaeff Karl Gmbh & Co Schaufellader-kippzylinder
FR2716508A1 (fr) * 1994-02-24 1995-08-25 Bosch Gmbh Robert Vérin pneumatique destiné à l'actionnement d'un embrayage.
EP0713980A3 (fr) * 1994-10-26 1997-03-26 Festo Kg Dispositif d'entraînement
WO2001069090A1 (fr) * 2000-03-17 2001-09-20 Festo Ag & Co Entrainement lineaire actionne par fluide

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DE3941748C2 (de) * 1989-12-18 1995-03-09 Siemens Ag Elektro-pneumatische oder -hydraulische Linear-Antriebsvorrichtung
DE9303050U1 (de) * 1993-03-03 1993-04-22 Festo AG & Co, 73734 Esslingen Fluidisch betätigbarer Arbeitszylinder
US6325590B1 (en) 1997-12-04 2001-12-04 Spectra Precision, Inc. Arrangement for determining the relative angular orientation between a first machine element and a second machine element
US6447240B1 (en) 1997-12-04 2002-09-10 Trimble Navigation Limited Arrangement for determining the relative angular orientation between a first machine element and a second machine element
US6099235A (en) * 1997-12-04 2000-08-08 Spectra Precision, Inc. Arrangement for determining the relative angular orientation between a first machine element and a second machine element
DE19846182B4 (de) * 1998-10-07 2006-01-26 Robert Bosch Gmbh Abgasrückführungsventil, enthaltend eine Schaltungsanordnung zur Erfassung des Schaltzustandes wenigstens eines pneumatischen Schaltmittels
US6379214B1 (en) * 1999-08-25 2002-04-30 Flow International Corporation Apparatus and methods for z-axis control and collision detection and recovery for waterjet cutting systems
US6540586B2 (en) 1999-08-25 2003-04-01 Flow International Corporation Apparatus and methods for collision detection and recovery for waterjet cutting systems
AT408476B (de) * 2000-01-21 2001-12-27 Hoerbiger Hydraulik Fluidbetätigter aktuator
US6502880B1 (en) * 2000-03-08 2003-01-07 Btm Corporation Pin part locator
US6756707B2 (en) * 2001-01-26 2004-06-29 Tol-O-Matic, Inc. Electric actuator
US7541707B2 (en) * 2004-01-08 2009-06-02 Tol-O-Matic, Inc. Electric actuator
FR2865977B1 (fr) * 2004-02-09 2006-06-02 Sonceboz Sa Dispositif de positionnement de phares
FR2866089B1 (fr) * 2004-02-09 2006-04-28 Sonceboz Sa Actionneur lineaire
DE102004035047B4 (de) * 2004-07-20 2006-06-01 Samson Ag Stellungsregelungssystem für ein von einem pneumatischen Stellantrieb betriebenes Stellorgan
JP4733481B2 (ja) * 2005-09-09 2011-07-27 カヤバ工業株式会社 シリンダ装置
US7603855B2 (en) * 2007-04-10 2009-10-20 Illinois Tool Works Inc. Valve with magnetic detents
US7603854B2 (en) 2007-04-10 2009-10-20 Illinois Tool Works Inc. Pneumatically self-regulating valve
US7587897B2 (en) * 2007-04-10 2009-09-15 Illinois Tool Works Inc. Magnetically sequenced pneumatic motor
US8282070B2 (en) * 2007-09-21 2012-10-09 Fisher Controls International Llc Apparatus and methods for manual override operation of a linear actuator
US8196484B2 (en) * 2008-04-18 2012-06-12 Tol-O-Matic, Inc. Electric actuator
US8070127B2 (en) * 2009-02-04 2011-12-06 Fisher Controls International, Llc Manual override apparatus for linear actuators
DE102009032296A1 (de) * 2009-07-09 2011-01-13 Illinois Tool Works Inc., Glenview Pneumatische Betätigungseinrichtung und Rohrbearbeitungsvorrichtung mit einer pneumatischen Betätigungseinrichtung
US9431868B2 (en) * 2010-01-19 2016-08-30 Tolomatic, Inc. Manual override device for an electric actuator and method for use
US8701513B2 (en) 2010-07-14 2014-04-22 Tol-O-Matic, Inc. Screw driven linear actuator and housing assembly
US9909601B2 (en) * 2010-11-16 2018-03-06 Illinois Tool Works Inc. Motor control
KR102273658B1 (ko) * 2019-11-12 2021-07-06 주식회사 피앤엠 박형 정밀 리니어 액츄에이터

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200382A (nl) * 1991-03-14 1992-10-01 Festo Kg Lineaire aandrijfinrichting.
DE4108158C2 (de) * 1991-03-14 2002-11-28 Festo Ag & Co Linear-Antriebsvorrichtung
DE4128959A1 (de) * 1991-08-30 1993-03-04 Schaeff Karl Gmbh & Co Schaufellader-kippzylinder
FR2716508A1 (fr) * 1994-02-24 1995-08-25 Bosch Gmbh Robert Vérin pneumatique destiné à l'actionnement d'un embrayage.
EP0713980A3 (fr) * 1994-10-26 1997-03-26 Festo Kg Dispositif d'entraînement
WO2001069090A1 (fr) * 2000-03-17 2001-09-20 Festo Ag & Co Entrainement lineaire actionne par fluide
US6786127B2 (en) 2000-03-17 2004-09-07 Festo Ag & Co. Fluid-actuated linear drive

Also Published As

Publication number Publication date
ES2030811T3 (es) 1992-11-16
KR950003066B1 (ko) 1995-03-30
US4987822A (en) 1991-01-29
DE3870876D1 (de) 1992-06-11
KR900003544A (ko) 1990-03-26
JPH0266304A (ja) 1990-03-06
JP2928276B2 (ja) 1999-08-03
EP0355179B1 (fr) 1992-05-06

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