EP0562503B1 - Pneumatic cylinder - Google Patents

Pneumatic cylinder Download PDF

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Publication number
EP0562503B1
EP0562503B1 EP93104606A EP93104606A EP0562503B1 EP 0562503 B1 EP0562503 B1 EP 0562503B1 EP 93104606 A EP93104606 A EP 93104606A EP 93104606 A EP93104606 A EP 93104606A EP 0562503 B1 EP0562503 B1 EP 0562503B1
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EP
European Patent Office
Prior art keywords
piston
pistons
piston rod
lever system
cylinder
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
EP93104606A
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German (de)
French (fr)
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EP0562503A1 (en
Inventor
Franz Kirsching
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Individual
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Individual
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Publication date
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Publication of EP0562503A1 publication Critical patent/EP0562503A1/en
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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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member

Definitions

  • the invention relates to a pneumatic cylinder according to the Preamble of claim 1.
  • Such a pneumatic cylinder is from GB 2 001 703 A. known.
  • Two pistons are provided are arranged coaxially to each other.
  • the pistons are as Hollow piston formed and acted upon by compression springs.
  • a similar pneumatic cylinder is from DE 22 32 709 C2 known. Here is a single piston inside of a cylinder movable. A compressive force from Cylinder via a lever system on a piston rod transfer.
  • Pneumatic cylinders are one compared to hydraulic cylinders very economical, environmentally friendly and popular Machine element that is used in a wide variety of areas Technology is used.
  • the limits of using Pneumatic cylinders are, however, where there are high forces are required, but only small installation spaces are available stand. For this reason, pneumatic cylinders are according to the hardly any of the two cited references for high forces useful.
  • the invention has for its object a Pneumatic cylinder according to the preamble of claim 1 to be designed in such a way that it transfers great forces can, but only requires small dimensions.
  • This Task is characterized by the characteristics of Claim 1 solved.
  • the pneumatic cylinder shown has two pistons 1, 2. These are arranged coaxially to one another and in one Housing 3 movable.
  • Piston 1 - the lower of the two Piston - has a piston rod on.
  • This piston rod is fixed with piston 1 connected through a bore 5 in Bottom 3.1 of the housing 3 passed down, and through a corresponding hole passed upwards in the upper piston 2.
  • the piston rod has an upper part 4.2 and a lower part 4.1.
  • Annular chamber 7 formed between the piston 1 and the bottom 3.1 of the housing 3 is one Annular chamber 7 formed. This has an inlet 7.1 for Print media on.
  • a further chamber 8 with an inlet 8.1 intended.
  • the lid 3.2 of the housing 3 carries double levers 9.1 and 9.2. These can be tilted using bearing pins 10.1 and 10.2 stored.
  • Piston 2 has pressure sliding shoes 11.1, 11.2.
  • the Pressure shoes 11.1 and 11.2 stand with the outer ends the outer lever arms of levers 9.1 and 9.2 in Active connection.
  • the ends of the inner lever arms of the two Levers 9.1 and 9.2 act on similar sliding shoes 12, and thus on the end face of the piston rod 4.2.
  • Chamber 8 pressurized. Should a movement of Piston 1 and piston rod in the Opposite direction, chamber 7 acted upon.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

A short travel pneumatic cylinder device for transmitting a high force, comprising a cylinder housing having a cylindrical bore for guiding of the piston and of the piston rod, two pistons which upon generation of an overatmospheric pressure between the pistons will move in opposite direction, and further comprising a mechanical lever system with a housing cover. The first of the pistons is connected with the piston rod, and the second of the two pistons is arranged coaxially relative to the first piston, is hollow, and is movable coaxially relative to the piston rod. The first of the two pistons is connected to the lever system at the side of the interior of the cylinder opposite to the second of the two pistons. The pressure force exerted by the second piston is transmitted to the piston rod via the lever system in a direction opposite to the direction of movement of the second piston.

Description

Die Erfindung betrifft einen Pneumatikzylinder gemäß dem Oberbegriff von Anspruch 1.The invention relates to a pneumatic cylinder according to the Preamble of claim 1.

Ein solcher Pneumatikzylinder ist aus GB 2 001 703 A bekanntgeworden. Dabei sind zwei Kolben vorgesehen, die zueinander koaxial angeordnet sind. Die Kolben sind als Hohlkolben ausgebildet und von Druckfedern beaufschlagt.Such a pneumatic cylinder is from GB 2 001 703 A. known. Two pistons are provided are arranged coaxially to each other. The pistons are as Hollow piston formed and acted upon by compression springs.

Ein ähnlicher Pneumatikzylinder ist aus DE 22 32 709 C2 bekanntgeworden. Hierbei ist ein einziger Kolben innerhalb eines Zylinders verfahrbar. Dabei wird eine Druckkraft vom Zylinder über ein Hebelsystem auf eine Kolbenstange übertragen.A similar pneumatic cylinder is from DE 22 32 709 C2 known. Here is a single piston inside of a cylinder movable. A compressive force from Cylinder via a lever system on a piston rod transfer.

Pneumatikzylinder sind im Vergleich zu Hydrozylindern ein sehr wirtschaftliches, umweltfreundliches und beliebtes Maschinenelement, das in den verschiedensten Bereichen der Technik Anwendung findet. Die Grenzen des Einsatzes von Pneumatikzylindern liegen jedoch dort, wo hohe Kräfte verlangt sind, aber nur kleine Einbauräume zur Verfügung stehen. Aus diesem Grunde sind Pneumatikzylinder gemäß der beiden genannten Entgegenhaltungen für hohe Kräfte kaum brauchbar.Pneumatic cylinders are one compared to hydraulic cylinders very economical, environmentally friendly and popular Machine element that is used in a wide variety of areas Technology is used. The limits of using Pneumatic cylinders are, however, where there are high forces are required, but only small installation spaces are available stand. For this reason, pneumatic cylinders are according to the hardly any of the two cited references for high forces useful.

Der Erfindung liegt die Aufgabe zugrunde, einen Pneumatikzylinder gemäß dem Oberbegriff von Anspruch 1 derart zu gestalten, daß dieser große Kräfte übertragen kann, jedoch nur geringe Bauabmessungen erfordert. Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.The invention has for its object a Pneumatic cylinder according to the preamble of claim 1 to be designed in such a way that it transfers great forces can, but only requires small dimensions. This Task is characterized by the characteristics of Claim 1 solved.

Die Erfindung ist anhand der Zeichnung näher erläutert. Der dargestellte Pneumatikzylinder weist zwei Kolben 1,2 auf. Diese sind koaxial zueinander angeordnet und in einem Gehäuse 3 verfahrbar. Kolben 1 - der untere der beiden Kolben - weist eine Kolbenstange auf. Diese Kolbenstange ist mit Kolben 1 fest verbunden, durch eine Bohrung 5 im Boden 3.1 des Gehäuses 3 nach unten hindurchgeführt, und durch eine entsprechende Bohrung im oberen Kolben 2 nach oben hindurchgeführt. Somit weist die Kolbenstange einen oberen Teil 4.2 und einen unteren Teil 4.1 auf. Zwischen Kolben 1 und Boden 3.1 des Gehäuses 3 ist eine Ringkammer 7 gebildet. Diese weist einen Einlaß 7.1 für ein Druckmedium auf. In gleicher Weise ist zwischen den beiden Kolben 1 und 2 eine weitere Kammer 8 mit einem Einlaß 8.1 vorgesehen.The invention is explained in more detail with reference to the drawing. The The pneumatic cylinder shown has two pistons 1, 2. These are arranged coaxially to one another and in one Housing 3 movable. Piston 1 - the lower of the two Piston - has a piston rod on. This piston rod is fixed with piston 1 connected through a bore 5 in Bottom 3.1 of the housing 3 passed down, and through a corresponding hole passed upwards in the upper piston 2. Thus points the piston rod has an upper part 4.2 and a lower part 4.1. Between the piston 1 and the bottom 3.1 of the housing 3 is one Annular chamber 7 formed. This has an inlet 7.1 for Print media on. In the same way is between the two Pistons 1 and 2 a further chamber 8 with an inlet 8.1 intended.

Der Deckel 3.2 des Gehäuses 3 trägt Doppelhebel 9.1 und 9.2. Diese sind mittels Lagerstiften 10.1 und 10.2 kippbar gelagert.The lid 3.2 of the housing 3 carries double levers 9.1 and 9.2. These can be tilted using bearing pins 10.1 and 10.2 stored.

Kolben 2 weist Druckgleitschuhe 11.1, 11.2 auf. Die Druckgleitschuhe 11.1 und 11.2 stehen mit den äußeren Enden der äußeren Hebelarme der Hebel 9.1 und 9.2 in Wirkverbindung. Die Enden der inneren Hebelarme der beiden Hebel 9.1 und 9.2 wirken auf ähnliche Gleitschuhe 12, und damit auf die Stirnfläche der Kolbenstange 4.2.Piston 2 has pressure sliding shoes 11.1, 11.2. The Pressure shoes 11.1 and 11.2 stand with the outer ends the outer lever arms of levers 9.1 and 9.2 in Active connection. The ends of the inner lever arms of the two Levers 9.1 and 9.2 act on similar sliding shoes 12, and thus on the end face of the piston rod 4.2.

Soll eine Druckübertragung über die Kolbenstange nach unten in Richtung des Pfeiles A erreicht werden, so wird Kammer 8 mit Druck beaufschlagt. Soll eine Bewegung von Kolben 1 und Kolbenstange in der Gegenrichtung erreicht werden, so wird Kammer 7 beaufschlagt.Should a pressure transfer via the piston rod after can be reached below in the direction of arrow A, so Chamber 8 pressurized. Should a movement of Piston 1 and piston rod in the Opposite direction, chamber 7 acted upon.

Claims (1)

  1. A pneumatic cylinder, especially a pneumatic short-stroke cylinder with high piston force, with a cylinder housing comprising a cylindrical bore for guiding the piston and the piston rod, with two pistons (1, 2) which on producing an air overpressure between the pistons move in opposite longitudinal directions, with a mechanical lever system and with a sealing cover, with the first (1) of the two pistons (1, 2) being connected with the piston rod and the second (2) of the two pistons (1, 2) being disposed coaxially to the first piston (1), characterized by the following features:
    the second piston (2) is arranged as a tubular piston and can be moved coaxially to the piston rod, the second piston (2) of the two pistons (1, 2) is in connection with the lever system on the side of the cylinder chamber which is averted from the first (1) of the two pistons (1, 2), the force of pressure acting from the second piston (2) is supplied by the lever system against the direction of movement of the second piston (2) of the piston rod.
EP93104606A 1992-03-24 1993-03-20 Pneumatic cylinder Expired - Lifetime EP0562503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209493A DE4209493C1 (en) 1992-03-24 1992-03-24
DE4209493 1992-03-24

Publications (2)

Publication Number Publication Date
EP0562503A1 EP0562503A1 (en) 1993-09-29
EP0562503B1 true EP0562503B1 (en) 2001-11-07

Family

ID=6454858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104606A Expired - Lifetime EP0562503B1 (en) 1992-03-24 1993-03-20 Pneumatic cylinder

Country Status (5)

Country Link
US (1) US5370039A (en)
EP (1) EP0562503B1 (en)
JP (1) JP2583725B2 (en)
AT (1) ATE208462T1 (en)
DE (1) DE4209493C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100250020B1 (en) * 1993-03-02 2000-03-15 가네꼬 히사시 Forming method of polysilicon thin film
ITMO20060244A1 (en) * 2006-07-28 2008-01-29 Gino Ferrari ACTUATOR GROUP
JP5613254B2 (en) * 2009-11-05 2014-10-22 パーカー・ハニフィン・コーポレーション Small boost pneumatic actuator
AT526647A1 (en) 2022-10-20 2024-05-15 Stiwa Automation Gmbh Pneumatic cylinder for linear adjustment of a first component and a second component relative to each other

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD83907A (en) *
US2659207A (en) * 1952-12-26 1953-11-17 Chicago Nipple Mfg Company Differential cylinder with toggle lock
US3298286A (en) * 1964-12-18 1967-01-17 Grove Valve & Regulator Co Valve operator
US3668349A (en) * 1971-03-12 1972-06-06 United Aircraft Corp Proportional pressure differnce actuator
DE2139150C3 (en) * 1971-08-05 1979-08-02 Weiss Kg Sondermaschinentechnik, 7141 Neckarweihingen A piston-cylinder unit acted upon by a pressure medium as an adjusting device with rapid traverse and power stroke
US3812766A (en) * 1972-04-28 1974-05-28 D Weiss Work locating apparatus
GB1401963A (en) * 1971-07-05 1975-08-06 Tourdelos Ltd Actuators
SU403902A1 (en) * 1972-01-04 1973-10-26 DEVICE FOR INCREASING INITIAL EFFORT AT THE STOCK OF HYDROCYLINDRAE G! T Bf ^ mn = '1'? ^ ;? with: 5) tppf *.?); /; ii ^ fj:? ”. ;; '^ a
US3943830A (en) * 1972-10-21 1976-03-16 Tokico Ltd. Actuating force generating device
GB1441977A (en) * 1973-11-02 1976-07-07 Spenklin Ltd Air-hydraulic pressure intensifying devices
SE391786B (en) * 1975-03-24 1977-02-28 Westin & Backlund Ab MEDICAL REGULATOR INCLUDING AT LEAST TWO PRESSURE TRANSFER ELEMENTS
US4206900A (en) * 1977-08-01 1980-06-10 Borg-Warner Corporation Valve operator
ATE8694T1 (en) * 1979-08-14 1984-08-15 Tourdelos Limited ACTUATOR.
AT374398B (en) * 1981-04-21 1984-04-10 Friedmann & Maier Ag ACTUATING DEVICE FOR A TENSIONING DEVICE
DE3638730A1 (en) * 1986-11-13 1988-05-26 Georg Roeck Device for transferring, intensifying and transmitting a pressure
GB8815819D0 (en) * 1988-07-04 1988-08-10 Allardin J Multi-stage air cylinder
DE3825870A1 (en) * 1988-07-29 1990-02-01 Rema Schweisstechnik Mechanical power transmission for a pneumatic power cylinder
US4979428A (en) * 1989-05-30 1990-12-25 Nelson Lester R Reciprocating air compressor with improved drive linkage
GB2234013A (en) * 1989-07-21 1991-01-23 Nat Oilwell Fluid-operated actuator
US5215286A (en) * 1992-05-26 1993-06-01 Nupro Company High pressure diaphragm valve

Also Published As

Publication number Publication date
EP0562503A1 (en) 1993-09-29
US5370039A (en) 1994-12-06
DE4209493C1 (en) 1993-05-19
JPH06101701A (en) 1994-04-12
JP2583725B2 (en) 1997-02-19
ATE208462T1 (en) 2001-11-15

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