EP0715083B1 - Vérin à piston sans tige - Google Patents

Vérin à piston sans tige Download PDF

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Publication number
EP0715083B1
EP0715083B1 EP95890207A EP95890207A EP0715083B1 EP 0715083 B1 EP0715083 B1 EP 0715083B1 EP 95890207 A EP95890207 A EP 95890207A EP 95890207 A EP95890207 A EP 95890207A EP 0715083 B1 EP0715083 B1 EP 0715083B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
damping
longitudinal slot
fluid
cylinder housing
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
EP95890207A
Other languages
German (de)
English (en)
Other versions
EP0715083A2 (fr
EP0715083A3 (fr
Inventor
Volker Drittel
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.)
Hygrama AG
Original Assignee
Hygrama AG
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 Hygrama AG filed Critical Hygrama AG
Publication of EP0715083A2 publication Critical patent/EP0715083A2/fr
Publication of EP0715083A3 publication Critical patent/EP0715083A3/fr
Application granted granted Critical
Publication of EP0715083B1 publication Critical patent/EP0715083B1/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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

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

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

Claims (7)

  1. Vérin à fluide sous pression (1) dont le piston est dépourvu de tige, comprenant un boítier de vérin (2), lequel est pourvu d'une fente longitudinale (6) continue sur toute sa longueur et présente une chambre intérieure cylindrique (3) dans laquelle un piston d'entraínement (4) est agencé avec faculté de déplacement longitudinal, avec un talon latéral (9) destiné à la prise de force mené vers l'extérieur depuis ledit piston à travers la fente longitudinale (6), et comprenant des couvercles de vérin (12) qui referment la chambre intérieure cylindrique (3) du boítier de vérin (2) à ses extrémités, un raccord (17) pour l'amenée et l'évacuation du fluide sous pression qui actionne le piston d'entraínement (4) étant prévu sur la face extérieure desdits couvercles, dans lequel la fente longitudinale (6) est étanchée par une bande d'étanchement intérieure (7) prévue à l'intérieur du boítier de vérin (2), ladite bande d'étanchement n'étant soulevée de la fente longitudinale (6) que dans la région du talon (9) et traversant un canal de guidage (19) dans le piston d'entraínement (4), et refermée vers l'extérieur tout au plus par une bande d'étanchement extérieure supplémentaire (8), laquelle est fixée sur la face extérieure du boítier de vérin (2) sur la fente longitudinale (6) à ses extrémités au moyen d'éléments de serrage (11) séparés des couvercles de vérin (12), caractérisé en ce que la bande d'étanchement (7) également est ancrée à ses extrémités dans ou sur la fente longitudinale (6) par des éléments de serrage respectifs (11) séparés des couvercles de vérin (12), en ce que les deux couvercles de vérin (12) sont susceptibles d'être fixés sur le boítier de vérin (2) dans des positions différentes tournées l'une par rapport à l'autre dans le plan du couvercle de vérin (12), et en ce que les canaux qui transmettent le fluide sous pression dans les deux couvercles de vérin (12) sont agencés avec symétrie de révolution dans la région de transition entre le couvercle de vérin et le composant voisin du boítier de vérin (2).
  2. Vérin selon la revendication 1, caractérisé en ce que les éléments de serrage (11) sont mis en place dans la fente longitudinale (6) au voisinage des extrémités du boítier de vérin (2), et en ce qu'ils sont maintenus par effet de coincement contre les parois de la fente longitudinale (6) à l'aide de vis de serrage (25) qui élargissent les éléments de serrage (11).
  3. Vérin selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la bande d'étanchement intérieure (7) est fixée par coopération de formes sur les éléments de serrage (11), et en ce qu'une bande d'étanchement extérieure (8) éventuellement prévue est fixée par coopération de forces sur les éléments de serrage (11).
  4. Vérin selon l'une des revendications 1, 2 et 3, caractérisé en ce que les couvercles de vérin (12), lesquels sont de préférence réalisés avec une section polygonale, comme par exemple une section carrée ou rectangulaire, sont pressés contre le boítier de vérin (2) au moyen de vis de traction (13) agencées de manière symétrique par rapport au centre et s'étendant parallèlement à l'axe du boítier de vérin (2).
  5. Vérin selon l'une des revendications 1, 2 et 3, caractérisé en ce que les couvercles de vérin (12) sont centrés sur une surface cylindrique du boítier de vérin (2), et susceptibles de tourner librement de façon coaxiale à la surface cylindrique.
  6. Vérin selon la revendication 5, caractérisé en ce que les couvercles de vérin (12) sont fixés sur le boítier de vérin (2) au moyen de cadres de maintien (31) appliqués contre les couvercles et capables de tourner par rapport à ceux-ci, avec des vis de traction (13) qui agissent sur lesdits cadres et qui pressent les couvercles de vérin (12) contre le boítier de vérin (2).
  7. Vérin selon l'une des revendications 1 à 6, lequel est pourvu d'un amortissement pour le piston d'entraínement (4) dans ses positions finales, ledit amortissement étant constitué par des tenons d'amortissement (14) aux extrémités du boítier de vérin (2) qui pénètrent en direction axiale dans celles-ci, avec un canal central (16) pour l'admission et l'échappement du fluide sous pression, lesdits tenons d'amortissement coopérant avec des cylindres d'amortissement (15) aux extrémités du piston d'entraínement (4), lesquels referment, lors de la pénétration d'un tenon d'amortissement (14), le canal central (16) de celui-ci, et dans lequel il est prévu latéralement par rapport au tenon d'amortissement (14) au moins un canal d'amortissement respectif (26), lequel débouche dans le raccord à fluide sous pression (17) via un étranglement (29) susceptible d'être réglé au moyen d'une vis d'amortissement (18), caractérisé en ce que la vis d'amortissement (18) pour le réglage de l'étranglement (29) est agencée du même côté du couvercle (12) que le raccord à fluide sous pression (17), et dont l'axe s'étend approximativement dans la même direction que celui du raccord à fluide sous pression (14), et en ce qu'il est prévu un canal de liaison (27) agencé entre le canal d'amortissement (26) et l'étranglement (29), ledit canal s'étendant avec symétrie de révolution dans le couvercle de vérin (12), et entourant de préférence de façon concentrique le perçage central (16).
EP95890207A 1994-11-30 1995-11-16 Vérin à piston sans tige Expired - Lifetime EP0715083B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT221994 1994-11-30
AT0221994A AT402543B (de) 1994-11-30 1994-11-30 Kolbenstangenloser druckmittelzylinder
AT2219/94 1994-11-30

Publications (3)

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

Family

ID=3530246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890207A Expired - Lifetime EP0715083B1 (fr) 1994-11-30 1995-11-16 Vérin à piston sans tige

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6766727B2 (en) 2001-02-28 2004-07-27 Festo Ag & Co. Rodless linear drive

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JP3177949B2 (ja) * 1997-04-29 2001-06-18 豊和工業株式会社 ロッドレスシリンダ
JP3818752B2 (ja) * 1997-09-24 2006-09-06 Ｓｍｃ株式会社 ロッドレスシリンダ
US6257123B1 (en) 1997-10-24 2001-07-10 Phd, Inc. Rodless slides
US5988042A (en) * 1997-10-24 1999-11-23 Phd, Inc. Rodless cylinder with internal bearings
SE510854C2 (sv) * 1997-10-29 1999-06-28 Mecman Ab Rexroth Anordning vid gavel till en tryckfluidcylinder samt tryckfluidcylinder innefattande en eller två dylika anordningar
JP3543592B2 (ja) * 1997-11-24 2004-07-14 豊和工業株式会社 ゴムダンパ
SE511690C2 (sv) * 1998-03-27 1999-11-08 Mecman Ab Rexroth Hållare för tätningsband
JP2001116147A (ja) * 1999-10-18 2001-04-27 Smc Corp ロッドレスシリンダのシール構造
DE10049348A1 (de) * 2000-10-05 2002-04-18 Rexroth Star Gmbh Linearführungsanordnung
JP3704294B2 (ja) * 2001-04-25 2005-10-12 Ｓｍｃ株式会社 ベルト固定機構
BR0309213A (pt) * 2002-04-17 2007-01-30 Thomson Licensing Sa gerador de sinal de erro de pacote
US6857780B2 (en) * 2002-11-15 2005-02-22 Phd, Inc. Rodless slide assembly
US7290478B2 (en) * 2005-01-28 2007-11-06 Phd, Inc. Stop for a slide assembly
NZ575249A (en) * 2009-03-02 2011-06-30 Open Building Solutions Ltd Re-closable dust cover for track of support carriage of sliding door or window, with carriage constructed as a sliding fastener of cover
DE102016014585A1 (de) * 2016-12-08 2018-06-14 Wirtgen Gmbh Betätigungseinheit zur Verriegelung eines Bauteils einer Baumaschine und Baumaschine mit einer derartigen Betätigungseinheit
US10821856B2 (en) 2018-12-13 2020-11-03 Ford Global Technologies, Llc Vehicle cabin
CN109737114A (zh) * 2019-01-07 2019-05-10 珠海市广源信科技有限公司 一种无杆气缸
US10807503B2 (en) 2019-03-04 2020-10-20 Ford Global Technologies, Llc Seat track assembly including cover members

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US4273031A (en) * 1979-05-22 1981-06-16 Hannon Albert H Fluid pressure containment actuator
US4373427A (en) * 1980-01-31 1983-02-15 Tol-O-Matic, Inc. Fluid pressure cylinder
US4838147A (en) * 1988-01-26 1989-06-13 Grigory Grishchenko Pressure fluid actuator
IT1217812B (it) * 1988-06-08 1990-03-30 Univers S P A Dispositivo di tenuta per cilindri pneumatici senz,asta
DE59106274D1 (de) * 1991-05-29 1995-09-21 Hygrama Ag Linearantrieb.
DE4120965A1 (de) * 1991-06-25 1993-01-07 Knorr Bremse Ag Zylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6766727B2 (en) 2001-02-28 2004-07-27 Festo Ag & Co. Rodless linear drive

Also Published As

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

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