EP3712443A1 - Hydraulikzylinder - Google Patents

Hydraulikzylinder Download PDF

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Publication number
EP3712443A1
EP3712443A1 EP19382202.0A EP19382202A EP3712443A1 EP 3712443 A1 EP3712443 A1 EP 3712443A1 EP 19382202 A EP19382202 A EP 19382202A EP 3712443 A1 EP3712443 A1 EP 3712443A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic cylinder
cartridge
fastening block
fastening
cylinder according
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.)
Withdrawn
Application number
EP19382202.0A
Other languages
English (en)
French (fr)
Inventor
Alberto Navarra Pruna
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.)
Comercial de Utiles y Moldes SA
Original Assignee
Comercial de Utiles y Moldes SA
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 Comercial de Utiles y Moldes SA filed Critical Comercial de Utiles y Moldes SA
Priority to EP19382202.0A priority Critical patent/EP3712443A1/de
Publication of EP3712443A1 publication Critical patent/EP3712443A1/de
Withdrawn legal-status Critical Current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
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • 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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/003—Systems with different interchangeable components, e.g. using preassembled kits

Definitions

  • the present invention relates to a hydraulic cylinder, and in particular to a hydraulic cylinder used in the manufacturing of molds.
  • the hydraulic cylinders used in the manufacturing of molds are usually of the hydraulic block model, which is a hydraulic cylinder in which the outer faces have a rectangular profile instead of the classic cylindrical profile.
  • Each cylinder manufacturer develops their catalog to adapt it to the needs of molders, modifying the outer part of the block for a better adaptation to the different needs of each design.
  • each cylinder consists of ten path references, and each one of these cylinders can have up to ten fastening systems, as well as different ways of connecting the hydraulic pipes, as well as other characteristics, adapted to each cylinder, such as a purge system or damping system, or sensor systems for the end of the stroke, the truth is that the aim of achieving a standardized product for immediate delivery is practically impossible, given that in the stock for a product of this category there are more than 20,000 combinations, while in reality there are few references that cover more than 90% of the applications.
  • one object of the present invention is to provide a modular hydraulic cylinder, which comprises a cartridge provided with a rod and a piston of the cylinder, while all of the complexity of the applications is standardized by blocks that are easy to manufacture.
  • the hydraulic cylinder of the invention resolves the aforementioned drawbacks and has other advantages which are described below.
  • the hydraulic cylinder according to the present invention comprises:
  • said cartridge comprises a housing for a position lock and said fastening block comprises a through hole for housing said position lock.
  • said position lock comprises two cylindrical sections with different diameters which are eccentric with respect to one another, and a housing with a polygonal cross section, hexagonal for example.
  • said cartridge comprises two cylindrical cross sections with different diameters.
  • said fastening block advantageously comprises a through hole wherein a cylindrical section of said cartridge is housed.
  • said cylindrical section which is housed in the through hole of the fastening block is the cylindrical section with the smaller diameter.
  • Said fastening block also comprises at least a fastening hole for housing fastening screws, for the fastening thereof to a mold, for example.
  • said fastening block can also comprise a cooling circuit for cooling the hydraulic cylinder during the use thereof.
  • Said fastening block can also comprise at least a housing for a sensor and at least a housing for a positioning bushing.
  • said fastening block can be a front fastening block, an upper fastening block or a flange.
  • said cartridge comprises an inlet and and outlet for fluid.
  • the hydraulic cylinder according to the present invention achieves an effective standardization of hydraulic cylinders for molds.
  • the object of the present invention is to standardize four basic aspects to cover the large majority of essential features for the functional use thereof.
  • the strokes of up to 120 mm represent 73% of the total, and when including strokes up to 200 mm, they represent 94% of the total.
  • each cylinder has different connection forms for connecting the hydraulic feed pipes, and in the hydraulic cylinder according to the present invention the connections are preferably situated in the rear part of the cartridge, making it possible for the pipes to rotate 360°, aiming them in the desired direction.
  • the cartridge further has another application for very specific cases, in which the same can be directly embedded in the mold, using a fastening flange, which is cheaper and easier to instal.
  • the hydraulic cylinder according to the present invention comprises a cartridge 1 on which a fastening block is mounted, the four variants of which will be described below, as a function of the requirements.
  • Said cartridge 1 can be provided in different measurements, as was previously explained, and comprises a rod 10 provided with a piston 11 and inlet 12 and and outlet 13 for fluid.
  • It also comprises a stopper 14 arranged next to the end of the rod 10 that is furthest from the piston 11, preferably threaded, and a housing 15 for a position lock, which will be described below.
  • Said cartridge 1 is made up of two cylindrical sections 16, 17, a section with a larger diameter 16 and a section with a smaller diameter 17.
  • a first fastening block 2 is described in relation to figures 2 to 4 .
  • Said first fastening block 2 comprises a through hole 21 in which the section with the smaller diameter 17 of the cartridge 1 is housed, as shown in figure 2 .
  • said first fastening block 2 comprises a through hole 22 in coincidence with said housing 15 of the cartridge 1 and a plurality of fastening holes 23 for fastening screws (not shown) for fastening the hydraulic cylinder to a mold.
  • This first fastening block 2 is used for the front fastening of the hydraulic cylinder to a mold.
  • Figures 5 and 6 show a second fastening block 3, which also defines a polygonal profile, such that the form of the fastening block 3 is substantially cubic or a parallelepiped, and also comprises a through hole 31 in which the section with the smaller diameter 17 of the cartridge 1 is housed.
  • said second fastening block 3 also comprises a through hole 32 in coincidence with said housing 15 of the cartridge 1 and a plurality of fastening holes 33 for fastening screws (not shown) for fastening the hydraulic cylinder to a mold.
  • This second fastening block 3 is used for the lateral fastening of the hydraulic cylinder to a mold, which is why the fastening holes 33 are aimed in a different direction to that of the housings 23 of the first fastening block.
  • this second fastening block 3 comprises housings 34 for positioning bushings (not shown) and a housing 35 for a sensor (not shown).
  • Figures 7 and 8 show a third fastening block 4, which also defines a polygonal profile, such that the form of the fastening block 4 is substantially cubic or a parallelepiped, and also comprises a through hole 41 in which the section with the smaller diameter 17 of the cartridge 1 is housed.
  • said third fastening block 4 also comprises a through hole 42 in coincidence with said housing 15 of the cartridge 1 and a plurality of fastening holes 43 for fastening screws (not shown) for fastening the hydraulic cylinder to a mold.
  • this third fastening block 4 also comprises a cooling circuit 44, shown in greater detail in figure 8 , which allows the hydraulic cylinder to be cooled by a cooling fluid if necessary.
  • Figure 9 shows a position lock 5, which is placed in the housing 15 of the cartridge 1 in the position of use thereof, as shown in figure 2 .
  • This position lock 5 comprises a first cylindrical section 51 and a second cylindrical section 52 with different diameters and a housing 53 with a polygonal cross section, for example a hexagonal cross section.
  • the cylindrical sections 51, 52 of the position lock 5 are eccentric with respect to one another, as can be seen in figure 10 , thereby ensuring the positioning thereof in an integral way with the housing 15 of the cartridge.
  • Figure 11 shows a fourth fastening block 6, in this case a flange, which also comprises housings 61 for screws (not shown).
  • This fourth fastening block 6 comprises a curved surface 62 which allows for the fastening thereof on the outer surface of the cartridge by means of a position lock 5, in this embodiment in the form of a bolt.
  • Figure 12 shows a second embodiment of the cartridge 1.
  • the same numerical references are used to indicate the same elements or similar elements.
  • the inlet 12 and outlet 13 for the fluid is placed on the lower part of the cartridge, one directly at the beginning of the piston 11 chamber and the other which directs the fluid to the end of said chamber.
  • the inlet 12 and outlet 13 are concentric with housings 24 machined on the fastening block 2 for connectors 25.
  • a hole 18 is machined which communicates with a hole in communication with the end of the piston 11 chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)
EP19382202.0A 2019-03-22 2019-03-22 Hydraulikzylinder Withdrawn EP3712443A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19382202.0A EP3712443A1 (de) 2019-03-22 2019-03-22 Hydraulikzylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19382202.0A EP3712443A1 (de) 2019-03-22 2019-03-22 Hydraulikzylinder

Publications (1)

Publication Number Publication Date
EP3712443A1 true EP3712443A1 (de) 2020-09-23

Family

ID=66476583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19382202.0A Withdrawn EP3712443A1 (de) 2019-03-22 2019-03-22 Hydraulikzylinder

Country Status (1)

Country Link
EP (1) EP3712443A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115263855A (zh) * 2022-08-02 2022-11-01 天津中鼎石油钻具制造有限公司 一种高强度的直连加厚型液压油缸及液压杆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942826A (en) * 1973-11-28 1976-03-09 Liane E. Lester Double eccentric lock
US5299489A (en) * 1991-05-17 1994-04-05 Reo Hydraulic Pierce & Form Pressure cylinder with low tolerance fit capable of supporting large transverse loads
EP0713748A1 (de) * 1994-11-24 1996-05-29 SMC Kabushiki Kaisha Linearantrieb
US5884549A (en) * 1996-08-13 1999-03-23 Smc Kabushiki Kaisha Linear actuator
JP2000145724A (ja) * 1998-11-06 2000-05-26 Yunikon:Kk シリンダ装置
EP1050685A2 (de) * 1999-05-07 2000-11-08 Heidel GmbH & Co. KG, Werkzeug- u. Maschinenfabrikation Hydraulischer Linearwegschieber
DE102017215678A1 (de) * 2017-09-06 2019-03-07 Robert Bosch Gmbh Hydraulikzylinder mit Kühlmittelkammer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942826A (en) * 1973-11-28 1976-03-09 Liane E. Lester Double eccentric lock
US5299489A (en) * 1991-05-17 1994-04-05 Reo Hydraulic Pierce & Form Pressure cylinder with low tolerance fit capable of supporting large transverse loads
EP0713748A1 (de) * 1994-11-24 1996-05-29 SMC Kabushiki Kaisha Linearantrieb
US5884549A (en) * 1996-08-13 1999-03-23 Smc Kabushiki Kaisha Linear actuator
JP2000145724A (ja) * 1998-11-06 2000-05-26 Yunikon:Kk シリンダ装置
EP1050685A2 (de) * 1999-05-07 2000-11-08 Heidel GmbH & Co. KG, Werkzeug- u. Maschinenfabrikation Hydraulischer Linearwegschieber
US6761104B2 (en) * 1999-05-07 2004-07-13 Heidel Gmbh & Co. Kg Werkzeug- U. Maschinenfabrikation Linear path slide
DE102017215678A1 (de) * 2017-09-06 2019-03-07 Robert Bosch Gmbh Hydraulikzylinder mit Kühlmittelkammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115263855A (zh) * 2022-08-02 2022-11-01 天津中鼎石油钻具制造有限公司 一种高强度的直连加厚型液压油缸及液压杆

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