EP3715645A1 - Cylindre hydropneumatique à membrane - Google Patents

Cylindre hydropneumatique à membrane Download PDF

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Publication number
EP3715645A1
EP3715645A1 EP20155287.4A EP20155287A EP3715645A1 EP 3715645 A1 EP3715645 A1 EP 3715645A1 EP 20155287 A EP20155287 A EP 20155287A EP 3715645 A1 EP3715645 A1 EP 3715645A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
diaphragm
piston rod
housing
hydropneumatic
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
EP20155287.4A
Other languages
German (de)
English (en)
Other versions
EP3715645B1 (fr
Inventor
André BARTEN
Richard Brenner
Fridwald Greiner
Timo LEHRIG
Erhard Quast
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.)
Achenbach Buschhetten GmbH and Co KG
Original Assignee
Achenbach Buschhetten GmbH 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 Achenbach Buschhetten GmbH and Co KG filed Critical Achenbach Buschhetten GmbH and Co KG
Publication of EP3715645A1 publication Critical patent/EP3715645A1/fr
Application granted granted Critical
Publication of EP3715645B1 publication Critical patent/EP3715645B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • 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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • F15B2211/7056—Tandem cylinders

Definitions

  • the present invention relates to a hydropneumatic diaphragm cylinder with a cylinder housing and two diaphragm pistons arranged in a cylinder chamber arrangement, each with a diaphragm extending radially between a cylinder wall and a piston rod unit, the diaphragm pistons being arranged axially offset on the piston rod unit in such a way that pressure is applied to one diaphragm piston a retraction of the piston rod unit and a pressurization of the other diaphragm piston causes the piston rod unit to extend.
  • Hydropneumatic membrane cylinders of the type mentioned at the beginning are used in particular on rewinding cutting and winding systems, the hydropneumatic membrane cylinders serving to press a contact device provided with contact rollers with a defined contact force during the winding process against a winding collar that forms during the winding process in order to be as uniform as possible to enable trained winding diameter. There Any diameter tolerances of the winding collar must be compensated for by the hydropneumatic membrane cylinder.
  • FIG Fig. 1 A hydropneumatic membrane cylinder previously used by the applicant, which in the present case forms the prior art, is shown schematically in FIG Fig. 1 shown.
  • the known diaphragm cylinder 10 has in a cylinder housing 11 two diaphragm pistons 14 and 15 which are arranged axially offset from one another in a common cylinder space 12 on a piston rod unit 13.
  • a membrane 16 and a in Fig. 1 right housing part 17 formed pressure chamber 18 through a pressure bore 20 running parallel to a cylinder axis 19 in an end face of housing part 17 is acted upon with hydraulic oil, the hydraulic oil being acted upon with pneumatic pressure via a pressure transducer not shown here outside of cylinder housing 11.
  • an axial gap 25 is formed between the membranes 16, 24, which is radially delimited by a housing ring 26, the housing ring 26 forming a connecting part between the housing parts 17 and 23 and circumferential edges 27, 28 of the membranes 16, 24 between a housing part 17, 23 and the housing ring 26 are received.
  • the housing ring 26 has a radial vent hole 29 which connects the space 25 with the environment.
  • Fig. 1 The well-known in Fig. 1
  • the diaphragm cylinder 10 shown, the diaphragm pistons 14, 15 or the diaphragms 16, 24 are located in the common cylinder space 12 and are only separated from one another by the intermediate space 25.
  • the intermediate space 25 can collapse so that the membranes 16, 24 touch one another.
  • the present invention is based on the object of proposing a diaphragm cylinder which enables the piston rod to move as steadily as possible and excludes mutual contact between the diaphragms.
  • the membrane cylinder according to the invention has the features of claim 1.
  • the hydropneumatic membrane cylinder according to the invention has a cylinder chamber arrangement with two cylinder chambers which are arranged separately in the cylinder housing and each receive a membrane piston.
  • the spatial separation of the membrane pistons according to the invention prevents the membranes of the membrane pistons from being able to apply pressure to one another via an intermediate pneumatic volume, so that, in contrast to the known membrane cylinder, the membranes of the membrane cylinder according to the invention are pneumatically decoupled. A mutual pneumatic influence of the membranes is therefore excluded.
  • a piston rod intermediate piece is provided between the diaphragm pistons which penetrates an intermediate cylinder wall separating the cylinder spaces.
  • the intermediate cylinder wall is preferably designed as a component of a housing flange, the housing flange having an annular flange arranged on the intermediate cylinder wall for connection to two housing parts arranged on a common cylinder axis with the housing flange.
  • diaphragms of the diaphragm piston for connection to the cylinder wall are each accommodated with a peripheral edge between the annular flange and a housing part, conventionally designed diaphragms, as are known from the prior art, can be used despite the different design of the cylinder housing with two separate cylinder chambers will.
  • the diaphragm pistons are preferably pressurized in two adjacent pressure chambers that are axially delimited by the cylinder partition and one diaphragm piston each, so that due to the correspondingly matching configuration of the pressure chambers on both sides of the partition, a correspondingly matching pressure surface of the diaphragm piston is made possible, and during a retraction and extension movement identical forces act on the diaphragm pistons.
  • the piston rod intermediate piece preferably has a diameter that differs from a piston rod part of the piston rod unit led out of the cylinder housing, so that the piston rod intermediate piece in particular has a smaller diameter than the piston rod part led out of the cylinder housing, and thus to achieve an increase in the tensile or compressive forces transmitted through the piston rod unit Pressure surface of the diaphragm piston can be made larger regardless of the diameter of the piston rod part led out.
  • a cylinder wall section radially delimiting the respective pressure chamber is preferably provided with a radial pressure bore, so that the formation of pressure connections on the axial end faces of the housing parts can be dispensed with.
  • the vent bores can be provided to coincide with the pressure bores in the outer surface of the cylinder housing.
  • Fig. 2 shows a membrane cylinder 30, which has two separately designed cylinder chambers 33, 34 in a cylinder housing 31 to form a cylinder chamber arrangement 32.
  • a diaphragm piston 36, 37 arranged on a piston rod unit 35 is accommodated in each of the cylinder chambers 33, 34, the diaphragm pistons 36, 37 being spaced from one another by a piston rod intermediate piece 47 and each having a diaphragm 38, 39.
  • a cylinder partition 40 is provided between them, which is formed as part of a housing flange 41, which is arranged on a common cylinder axis 42 with housing parts 43, 44, and via an annular flange 45 formed on the housing flange 41 the housing parts 43, 44 is connected.
  • the membranes 38, 39 of the membrane pistons 36, 37 are each arranged with a peripheral edge between the annular flange 45 and the housing part 43, 44 adjacent to the annular flange 45.
  • Fig. 2 shows is the in Fig. 2 left diaphragm piston 36 is arranged at the end of the piston rod intermediate piece 47 of the piston rod unit 35, which penetrates the cylinder intermediate wall 40 and which in FIG Fig. 2 Right diaphragm piston 37 is arranged at the end of a piston rod part 46 which is led out of the housing part 44.
  • the piston rod intermediate piece 47 is reduced in diameter d 1 compared to the protruding piston rod part 46 and the diaphragm piston 37 is located on a piston rod collar 48 in the transition between the piston rod intermediate piece 47 and the protruding piston rod part 46.
  • the pressurization of the diaphragm pistons 36, 37 takes place in two adjacent pressure chambers 49, 50 which are axially delimited by the cylinder partition 40 and one diaphragm piston 36, 37 in each case Fig. 2 left pressure chamber 49 is provided with a pressure bore 51 which is arranged in a cylinder wall section 52 of a cylinder wall 60 which radially delimits the pressure chamber 49, and for pressurizing the in Fig. 2
  • Right pressure chamber 50 a cylinder wall section 53 delimiting the pressure chamber 50 radially is provided with a pressure bore 54.
  • the cylinder wall sections 52 and 53 are formed by the annular flange 45 of the housing flange 41.
  • the left pressure chamber 49 causes the piston rod unit 35 to retract, and the application of pressure to the pressure chamber 50 causes the piston rod unit 35 to move outward.
  • the venting chambers 56, 57 each axially separated by the diaphragms 38, 39 of the diaphragm pistons 36, 37 from the pressure chambers 49, 50, which, in contrast to the pressure chambers 49, 50, which are filled with a hydraulic fluid, are filled with an air volume formed from the ambient air
  • the housing parts 43, 44 are each provided with a radial vent hole 58, 59.
  • the diameter d1 of the piston rod intermediate piece 47 can be selected to be smaller than the diameter d2 of the piston rod part 47 guided out, so that increased piston forces can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
EP20155287.4A 2019-03-26 2020-02-04 Cylindre hydropneumatique à membrane Active EP3715645B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202019101693.0U DE202019101693U1 (de) 2019-03-26 2019-03-26 Hydropneumatischer Membranzylinder

Publications (2)

Publication Number Publication Date
EP3715645A1 true EP3715645A1 (fr) 2020-09-30
EP3715645B1 EP3715645B1 (fr) 2023-08-09

Family

ID=66179235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20155287.4A Active EP3715645B1 (fr) 2019-03-26 2020-02-04 Cylindre hydropneumatique à membrane

Country Status (3)

Country Link
EP (1) EP3715645B1 (fr)
CN (1) CN212509053U (fr)
DE (1) DE202019101693U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024059783A1 (fr) * 2022-09-16 2024-03-21 Decker Colter J Actionneurs souples programmables pour commande numérique et analogique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004212A1 (de) * 1970-01-30 1971-08-05 Louis Felder Druckgasbeaufschlagte Kolben-Zylinder-Anordnung
US3838630A (en) * 1973-03-30 1974-10-01 J Kobelt Double-acting positioning linear actuator
WO2004016954A1 (fr) * 2002-08-19 2004-02-26 Fisher Controls International Llc Dispositif de commande de fluide modulaire et reversible avec collecteur de fluide integre
EP2113673A2 (fr) * 2008-04-29 2009-11-04 Murrplastik Systemtechnik GmbH Chambre à dépression
WO2014088278A1 (fr) * 2012-12-06 2014-06-12 Lee Jae-Sung Actionneur entraîné par piston variable fabriqué à partir d'un film d'étanchéité souple

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004212A1 (de) * 1970-01-30 1971-08-05 Louis Felder Druckgasbeaufschlagte Kolben-Zylinder-Anordnung
US3838630A (en) * 1973-03-30 1974-10-01 J Kobelt Double-acting positioning linear actuator
WO2004016954A1 (fr) * 2002-08-19 2004-02-26 Fisher Controls International Llc Dispositif de commande de fluide modulaire et reversible avec collecteur de fluide integre
EP2113673A2 (fr) * 2008-04-29 2009-11-04 Murrplastik Systemtechnik GmbH Chambre à dépression
WO2014088278A1 (fr) * 2012-12-06 2014-06-12 Lee Jae-Sung Actionneur entraîné par piston variable fabriqué à partir d'un film d'étanchéité souple

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024059783A1 (fr) * 2022-09-16 2024-03-21 Decker Colter J Actionneurs souples programmables pour commande numérique et analogique

Also Published As

Publication number Publication date
CN212509053U (zh) 2021-02-09
EP3715645B1 (fr) 2023-08-09
DE202019101693U1 (de) 2019-04-01

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