WO2019096617A1 - Tige de piston avec des pistons, en particulier pour un actionneur technique fluidique et procédé servant à fabriquer une tige de piston avec des pistons - Google Patents

Tige de piston avec des pistons, en particulier pour un actionneur technique fluidique et procédé servant à fabriquer une tige de piston avec des pistons Download PDF

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Publication number
WO2019096617A1
WO2019096617A1 PCT/EP2018/080246 EP2018080246W WO2019096617A1 WO 2019096617 A1 WO2019096617 A1 WO 2019096617A1 EP 2018080246 W EP2018080246 W EP 2018080246W WO 2019096617 A1 WO2019096617 A1 WO 2019096617A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
piston rod
plastic
metal layer
layer
Prior art date
Application number
PCT/EP2018/080246
Other languages
German (de)
English (en)
Inventor
Lothar Patberg
Andreas Cott
Fabian Schongen
Andreas Walter
Original Assignee
Thyssenkrupp Steel Europe Ag
Thyssenkrupp 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 Thyssenkrupp Steel Europe Ag, Thyssenkrupp Ag filed Critical Thyssenkrupp Steel Europe Ag
Priority to EP18803351.8A priority Critical patent/EP3710721A1/fr
Publication of WO2019096617A1 publication Critical patent/WO2019096617A1/fr

Links

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
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
    • 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
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof
    • F15B2215/305—Constructional details thereof characterised by the use of special materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/40—Multi-layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3214—Constructional features of pistons

Definitions

  • Piston rod with piston in particular for a fluidic actuator and method for producing a piston rod with piston
  • the invention relates to a piston rod with piston for a fluidic actuator and a method for producing a piston rod with piston.
  • Fluid power actuators whether operated hydraulically or pneumatically, are known from the prior art, which are composed of several components and have an integrally formed piston rod with pistons, s. for example EP 0 022 769 Bl.
  • the production of such pistons is usually carried out by a massive forming and / or a machining of a cylindrical, metallic base body (blank).
  • the introduction of functional surfaces for functional elements, in particular for guiding and / or sealing elements in the region of the lateral surface of the piston, is also complicated and expensive.
  • the piston is equipped with functional elements, such as guide ring (s), seal (s) and / or scraper.
  • Fluidic actuators are charged very dynamically over their service life, so that large moving masses are usually undesirable. Adding to disadvantage can be undesirable frictional losses and / or friction vibrations, which can occur due to the different thermal expansions of the individual components.
  • pistons or sealing disks or disks in conjunction with pistons made of a solid base material in conjunction with plastic parts from DE 2163840A, DE 2454377A, US 2310917 and GB 572055 are known.
  • the invention is based on the object to provide a weight-optimized and / or functionally integrated piston rod with piston and a method for its production. This object is achieved by a piston rod with piston having the features of patent claim 1. Further advantageous embodiments of the invention are listed in the dependent claims.
  • a piston rod with piston in particular for a fluidic actuator, wherein the piston is connected to the piston rod, wherein the piston is formed from a hybrid material is provided.
  • the inventors have found that by providing a piston of a hybrid material, positive influence on the moving mass can be made, particularly when using suitable materials that are made into a piston and less weight compared to metallic, solid Have piston.
  • the hybrid material also allows the integration of functions.
  • the hybrid material according to a first embodiment comprises metal and plastic.
  • the plastic can contribute to reducing the mass and / or functional integration of the piston compared to a monolithic metal piston with the same geometry.
  • plastic has a lower thermal expansion than metallic materials and has damping properties.
  • the piston has at least one metal layer and at least one plastic layer, which in particular is adhesively bonded to the metal layer.
  • the entire piston or the entire piston of a semi-finished which is a composite material of at least 2 layers.
  • this composite material has at least one metal layer and at least one plastic läge, which are connected cohesively over their entire surface.
  • the at least one metal layer and the at least one cohesively connected to the metal layer plastic could be inexpensive, for example, if the metal layer is provided band-shaped and the Kunststoffst off preferably continuously applied to the metal layer.
  • the plastic layer can be applied as a film, for example by lamination, or as a wet film, for example in the coil coating process, with subsequent drying on the metal layer.
  • this embodiment is a band-shaped metal layer which preferably has over its entire surface a film or a film of plastic, which represents the plastic layer. If necessary, prior to application, the metal side / surface to which the plastic layer is to be applied, with an adhesion promoter to increase the adhesion between metal and plastic are coated.
  • the composite material thus has at least 3 layers: a metal layer provided with a bonding agent and thereon a plastic layer, wherein the layers are bonded to one another in a material-locking manner over the entire surface.
  • Suitable metal layers are aluminum, magnesium and preferably steel materials, in particular with a thickness, for example, between 0.2 and 6.0 mm, in particular between 0.2 and 4.0 mm, 0.2 and 2.0 mm, 0 , 2 and
  • Thermoplastics for example based on polyamide (PA), polyethylene (PE) or a mixture thereof, in particular with a thickness of, for example, between 0.005 and 2.0 mm, preferably 0.005 and
  • a hybrid material or a semifinished product or composite material to be used according to the invention is a composite, that is to say a material which has at least two materials with different material properties that are materially bonded to one another over their entire surface and / or consists thereof.
  • the hybrid material therefore has different material properties than its individual components.
  • the semifinished product is deformable, in particular three-dimensionally deformable, without any delamination of the individual layers taking place.
  • the piston is cup-shaped, in particular rotationally symmetrical with an outer peripheral collar region or disk-shaped and has in the middle a central opening for receiving the piston rod.
  • the piston has a collar area which runs around the opening on the inside and which, due to a certain contact surface with the piston rod, provides improved stability and / or rigidity and, associated therewith, higher operational reliability.
  • the piston can be materially, positively and / or non-positively connected to the piston rod / be. Cohesively example, by welding, soldering or gluing, positively, for example by riveting, and / or non-positively, for example by pressing or screwing.
  • the Kunststoffst was off in the cup-shaped configuration of the piston arranged on the side facing away from the piston rod.
  • the piston is in a cylinder tube / hollow Cylinder of a fluidic actuator inserted respectively receivable, so that the outer circumferential collar region as a lateral surface of the cup-shaped piston assumes the function of the support respectively leadership within the cylinder tube / hollow cylinder.
  • the plastic layer arranged on the side facing away from the piston rod can assume a sealing and / or sliding function, so that no further additional components, such as one or more seals, are necessary.
  • the or a further plastic läge be arranged in the cup-shaped configuration of the piston on the piston rod side facing.
  • the plastic layer can be connected to a further material, in particular a further plastic material, for example to provide a stable and / or rigid piston.
  • the plastic Läge can accordingly act as a coupling layer between the other material and the metal layer.
  • the further material in particular the further plastic material is molded or molded or molded.
  • the injection molding or molding is a commercially established process that can be operated economically.
  • the further material come thermoplastics, - for example polyethylene (PE), polyamide (PA, PA6, PA66), polypropylene (PP), polystyrene (PS) -, thermoplastic elastomers or elastomers, in particular, the other materials may also be filled, preferably be reinforced with fibers and / or fillers.
  • the further material in particular the further plastic material, preferably has at least one functional surface at least in sections. This functional surface is used to hold at least one functional element, such as guide bands, seals, scrapers, etc.
  • the further material in particular the further plastic material have at least one structure increasing the stiffness.
  • the further material also (other) components, in particular components, such as sensor components can be integrated.
  • the invention relates to a method for producing a piston rod with piston, in particular for a fluidic actuator, comprising the following steps:
  • the invention provides an economical method for producing a piston rod with pistons, in particular for a fluidic actuator, in order to be able to produce weight-optimized and / or functionally integrated piston rods with pistons which have a reduced mass compared to the prior art and / or Enable integration of functions.
  • a first embodiment of the method is after molding of the semifinished product to a piston another material, in particular a further plastic material to the outwardly or inwardly facing plastic läge of the piston preferably molded or molded or molded.
  • At least one functional surface and / or at least one stiffness-increasing structure are integrated in the further material, in particular in the further plastic material.
  • the further material in particular in the further plastic material.
  • Fig. 2 is a schematic partial sectional view of a first embodiment of a
  • FIG. 6 an embodiment of a method according to the invention with reference to a schematic flow chart.
  • FIG. 1 shows a schematic representation of a semifinished product which has at least one metal layer (1.1) and at least one plastic layer (1.2) which is materially bonded to the metal layer (1.1).
  • the metal layer (1.1) preferably consists of a steel material, which is particularly preferably provided on one or both sides with a corrosion protection coating and in particular has a thickness between 0.2 and 1.5 mm.
  • the plastic läge (1.2) is preferably made of a thermoplastic material and in particular has a thickness between 0.01 and 1.0 mm.
  • the semifinished product is a prefabricated board, which is initially separated from a band-shaped laminate (metal layer / plastic layer) and cut to size, in particular to the required development for the production of the piston (1).
  • a piston (1) is formed, for example deep-drawn, which cup-shaped, in particular rotationally symmetrical about a symmetry axis (S) is formed and an outer circumferential collar portion (1.4), s. Fig. 2.
  • the piston (1) has in the middle a central opening (1.5) for receiving a piston rod (2), wherein an around the opening (1.5) inside circumferential collar portion (1.3) is formed.
  • the plastic layer (1.2) is arranged on the side facing away from the piston rod (2).
  • the piston (1) in particular with a piston rod (2), can be inserted into a cylinder tube / hollow cylinder (5) of a fluid-technical actuator (10), so that the outer peripheral collar region (1.4) serves as a lateral surface of the piston as a function of the support respectively guide can take over within the cylinder tube / hollow cylinder.
  • the connection between piston (1) and piston rod (2) can be material, positive and / or non-positive.
  • the piston (1) can be pressed onto the piston rod (2), optionally an additional adhesive connection can lead to an increase in the frictional connection.
  • the plastic läge or another plastic layer may be arranged on the piston rod side facing.
  • Die Plastic layer (1.2) acts as a coupling layer between the further material (3) and the metal layer (1.1).
  • the further material (3), in particular the further plastic material may be molded or molded or molded.
  • the material (3) consists for example of a thermoplastic material - for example polyethylene (PE), polyamide (PA, PAß, PA66), polypropylene (PP), polystyrene (PS) -, thermoplastic elastomer or elastomer and may also be filled in particular.
  • the material (3) encloses, at least in sections, preferably completely, the collar region (1.4) of the piston (1) which surrounds the outside and at least partially the collar region (1.3) of the piston (1) which encircles the circumference.
  • the further material (3) has at least sections functional surfaces (3.1), Fig. 4.
  • the functional surfaces (3.1) are used to hold functional elements (4), such as guide bands, seals, scrapers, etc., Fig Increasing the rigidity of the piston (1), the further material (3) have stiffness-increasing structures, such as rib-shaped structures.
  • FIG. 5 shows an exemplary embodiment of a fluid power actuator (10).
  • FIG. 6 shows a schematic flow diagram of an exemplary embodiment for the production of a piston (1).
  • a semifinished product comprising at least one metal layer (1.1) and at least one integral with the metal layer cohesively connected Kunststoffst-off (1.2) is provided.
  • the semifinished product is formed in step B to a cup-shaped piston (1) in such a deep drawn that the metal layer (1.1) facing inward and the plastic layer (1.2) to the outside.
  • a central opening (1.5) is introduced before, during or after molding.
  • a further material (3) in particular a further plastic material, is preferably injection-molded or molded or molded onto the outwardly facing plastic layer (1.2) of the piston (1).
  • step D a piston rod (2) is received in the central opening (1.5) and the piston (1) with the piston rod and form-fitting and / or non-positively connected.
  • step F it means that the piston (1) or the piston rod (2) with piston (1) is inserted into a cylinder tube (5), the piston (1) and / or the piston rod (2) with functional elements (4) are fitted (step E).
  • the invention is not limited to the embodiments shown, but the individual features can be combined with each other.
  • the piston rod (2) according to the invention with piston (1) is individually scalable and can be used in all fluid-actuated actuators (10).
  • the connection between the piston and the piston rod does not necessarily have to take place via a central opening introduced into the piston, but the piston and piston rod can also be connected to one another in a stable and / or rigid manner, in particular in a material-positive and / or non-positive manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)

Abstract

L'invention concerne une tige (2) de piston avec des pistons (1), en particulier pour un actionneur (10) technique fluidique. Le piston (1) est relié à la tige de piston (2), et le piston (1) est formé à partir d'un matériau hybride. L'invention concerne en outre également un procédé servant à fabriquer une tige (2) de piston avec un piston (1).
PCT/EP2018/080246 2017-11-14 2018-11-06 Tige de piston avec des pistons, en particulier pour un actionneur technique fluidique et procédé servant à fabriquer une tige de piston avec des pistons WO2019096617A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18803351.8A EP3710721A1 (fr) 2017-11-14 2018-11-06 Tige de piston avec des pistons, en particulier pour un actionneur technique fluidique et procédé servant à fabriquer une tige de piston avec des pistons

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017220204.1 2017-11-14
DE102017220204.1A DE102017220204A1 (de) 2017-11-14 2017-11-14 Kolbenstange mit Kolben, insbesondere für einen fluidtechnischen Aktor und Verfahren zum Herstellen einer Kolbenstange mit Kolben

Publications (1)

Publication Number Publication Date
WO2019096617A1 true WO2019096617A1 (fr) 2019-05-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/080246 WO2019096617A1 (fr) 2017-11-14 2018-11-06 Tige de piston avec des pistons, en particulier pour un actionneur technique fluidique et procédé servant à fabriquer une tige de piston avec des pistons

Country Status (3)

Country Link
EP (1) EP3710721A1 (fr)
DE (1) DE102017220204A1 (fr)
WO (1) WO2019096617A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019217335A1 (de) * 2019-11-11 2021-05-12 Zf Friedrichshafen Ag Kolbenstange für einen Schwingungsdämpfer eines Kraftfahrzeugs

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7703341U1 (fr) * 1900-01-01 Fa. Carl Freudenberg, 6940 Weinheim
US2310917A (en) 1940-07-10 1943-02-16 Daly Le Grand Self-packing piston
GB572055A (en) 1944-02-08 1945-09-20 Angus George Co Ltd Improvements in cup washers
DE2163840A1 (de) 1971-12-22 1973-06-28 Knorr Bremse Gmbh Druckmittelbetaetigbarer zylinder
DE2454377A1 (de) 1974-11-15 1976-05-20 Kupfer Asbest Co Dichtkolben fuer betaetigungszylinder
US4306489A (en) * 1979-11-01 1981-12-22 Exxon Research & Engineering Co. Composite piston
EP0022769B1 (fr) 1978-12-12 1983-01-12 KOMMANDITBOLAGET UNITED STIRLING (SWEDEN)AB&CO Joint etanche de bielle de piston
GB2148408A (en) * 1983-10-21 1985-05-30 Daido Metal Co A sliding and/or bearing structure
US20080289489A1 (en) * 2007-05-24 2008-11-27 Jan Brosch Composite Piston Unit and Automatic Vehicle Transmission
US20090255400A1 (en) * 2008-04-14 2009-10-15 Polygon Company Hybrid Piston Rod
DE102010007404A1 (de) 2010-02-09 2011-08-11 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH, 10587 Verfahren zum Herstellen eines rohrförmigen rotationssymmetrischen Kfz-Fahrwerkbauteils wie einer Kolbenstange, und gebaute Kolbenstange
WO2014041506A1 (fr) * 2012-09-12 2014-03-20 Ri-Ba Composites - S.R.L. Con Unico Socio Cylindre hydraulique fait d'un stratifié composite hybride, en particulier pour des applications à grande puissance
US20140262626A1 (en) * 2013-03-14 2014-09-18 The Raymond Corporation Buckling-Resistant Lift Cylinders
WO2015032623A1 (fr) * 2013-09-03 2015-03-12 Thyssenkrupp Steel Europe Ag Produit semi-fini et procédé permettant de fabriquer une pièce moulée hybride tridimensionnelle dans un composite métal/matière plastique, et utilisation dudit produit semi-fini
WO2016074690A1 (fr) * 2014-11-12 2016-05-19 Festo Ag & Co. Kg Piston et dispositif de reglage équipé de celui-ci
US20160159377A1 (en) * 2014-12-03 2016-06-09 New York Air Brake, LLC Brake Piston Assembly
US20160245359A1 (en) * 2015-02-25 2016-08-25 Michael A. Ankney Piston head assembly for radio controlled cars shock absorber and method

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7703341U1 (fr) * 1900-01-01 Fa. Carl Freudenberg, 6940 Weinheim
US2310917A (en) 1940-07-10 1943-02-16 Daly Le Grand Self-packing piston
GB572055A (en) 1944-02-08 1945-09-20 Angus George Co Ltd Improvements in cup washers
DE2163840A1 (de) 1971-12-22 1973-06-28 Knorr Bremse Gmbh Druckmittelbetaetigbarer zylinder
DE2454377A1 (de) 1974-11-15 1976-05-20 Kupfer Asbest Co Dichtkolben fuer betaetigungszylinder
EP0022769B1 (fr) 1978-12-12 1983-01-12 KOMMANDITBOLAGET UNITED STIRLING (SWEDEN)AB&CO Joint etanche de bielle de piston
US4306489A (en) * 1979-11-01 1981-12-22 Exxon Research & Engineering Co. Composite piston
GB2148408A (en) * 1983-10-21 1985-05-30 Daido Metal Co A sliding and/or bearing structure
US20080289489A1 (en) * 2007-05-24 2008-11-27 Jan Brosch Composite Piston Unit and Automatic Vehicle Transmission
US20090255400A1 (en) * 2008-04-14 2009-10-15 Polygon Company Hybrid Piston Rod
DE102010007404A1 (de) 2010-02-09 2011-08-11 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH, 10587 Verfahren zum Herstellen eines rohrförmigen rotationssymmetrischen Kfz-Fahrwerkbauteils wie einer Kolbenstange, und gebaute Kolbenstange
WO2014041506A1 (fr) * 2012-09-12 2014-03-20 Ri-Ba Composites - S.R.L. Con Unico Socio Cylindre hydraulique fait d'un stratifié composite hybride, en particulier pour des applications à grande puissance
US20140262626A1 (en) * 2013-03-14 2014-09-18 The Raymond Corporation Buckling-Resistant Lift Cylinders
WO2015032623A1 (fr) * 2013-09-03 2015-03-12 Thyssenkrupp Steel Europe Ag Produit semi-fini et procédé permettant de fabriquer une pièce moulée hybride tridimensionnelle dans un composite métal/matière plastique, et utilisation dudit produit semi-fini
WO2016074690A1 (fr) * 2014-11-12 2016-05-19 Festo Ag & Co. Kg Piston et dispositif de reglage équipé de celui-ci
US20160159377A1 (en) * 2014-12-03 2016-06-09 New York Air Brake, LLC Brake Piston Assembly
US20160245359A1 (en) * 2015-02-25 2016-08-25 Michael A. Ankney Piston head assembly for radio controlled cars shock absorber and method

Also Published As

Publication number Publication date
EP3710721A1 (fr) 2020-09-23
DE102017220204A1 (de) 2019-05-16

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