EP3922449B1 - Unité hydraulique pour une presse à filer, série de telles unités et presse à filer pourvue de l'unité hydraulique - Google Patents

Unité hydraulique pour une presse à filer, série de telles unités et presse à filer pourvue de l'unité hydraulique Download PDF

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Publication number
EP3922449B1
EP3922449B1 EP21176775.1A EP21176775A EP3922449B1 EP 3922449 B1 EP3922449 B1 EP 3922449B1 EP 21176775 A EP21176775 A EP 21176775A EP 3922449 B1 EP3922449 B1 EP 3922449B1
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EP
European Patent Office
Prior art keywords
hydraulic
tank
pressure medium
unit
extruder
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.)
Active
Application number
EP21176775.1A
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German (de)
English (en)
Other versions
EP3922449A1 (fr
Inventor
Jan Lukas Bierod
Mark-Patrick Muehlhausen
Matthias Amend
Ralf Maier
Alexander Huber
Elke Mueller
Engelbert Heuer
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP3922449A1 publication Critical patent/EP3922449A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/26—Extrusion presses; Dies therefor using press rams
    • 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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/211—Press driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/066—Cooling by ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • 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
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/022—Installations or systems with accumulators used as an emergency power source, e.g. in case of pump failure
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • 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
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • 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
    • F15B21/14—Energy-recuperation means
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20569—Type of pump capable of working as pump and motor
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators

Definitions

  • the invention relates to a hydraulic unit for an extruder according to the preamble of claim 1, a series of such units according to claim 11, and an extruder with the hydraulic unit according to claim 13.
  • a hydraulic extruder has a press cylinder and a hydraulic unit to supply it with pressure medium.
  • the latter includes a tank for storing the pressure medium, sometimes with a considerable volume of pressure medium, for example 20m 3 , as well as a pump unit or assembly with several hydraulic machines that suck in from the tank.
  • a hydraulic control device for example consisting of several hydraulic control blocks, is provided to control the pressure medium supply.
  • the pressure medium is cooled down via a heat exchanger.
  • the pump unit is arranged on the same level as the press cylinder, up to 40m away.
  • the tank and the control blocks are arranged above the press cylinder on a platform supported on the bottom.
  • Such an extruder with a hydraulic unit is shown, for example, in the publication WO 2013/167 111 A1 .
  • the disadvantage of this is that access to the press cylinder, for example for maintenance, is more difficult due to the supporting structure of the platform.
  • the distantly arranged pump unit leads to long pressure medium lines with complex piping and a corresponding pressure medium volume. This adds to the fire load and makes it difficult to precisely control the extruder.
  • the pump unit also requires an additional installation area with a foundation. This concept of arranging the hydraulic unit leads to an individual concept for different performance classes of the extruder, which increases the design effort.
  • a hydraulic unit with the features of the preamble of claim 1 is for the extruder according to the publication US 2,751,076 realized.
  • the hydraulic pump to supply the press cylinder is arranged directly on the tank.
  • the publication CN 106 180 234 A as well as the publication CN 204 583 884 U as well as the printed matter CN 202 028 626 U also show extrusion presses with hydraulic units.
  • the invention is based on the object of creating a hydraulic unit for an extruder that is more compact. Another task is to create a series of units for different performance classes of the extruder with reduced design effort. A third task is to create an extruder with a reduced space requirement.
  • the first task is solved by a hydraulic unit with the features of claim 1
  • the second task is solved by a series with the features of claim 11
  • the third task is solved by an extruder with the features of claim 13.
  • a hydraulic unit for supplying pressure medium to a hydraulic actuator of an extruder, in particular a press cylinder has several components, in particular hydraulic components.
  • the unit comprises as components at least one tank for storing the pressure medium, as well as at least one hydraulic machine, in particular a hydraulic pump, which is fluidly connected to the tank. This can suck in pressure medium from the tank and is designed to apply the pressure medium to a pressure chamber of the actuator.
  • the tank and the at least one hydraulic machine are not only fluidly connected to one another, but also load-bearing. At least the tank and the hydraulic machine not only form a hydraulically functional unit, but also a structural unit.
  • the tank has a main section or a main volume, from which at least one tapered suction section, in particular a suction tunnel, extends.
  • a housing connection, in particular a suction connection, of the at least one hydraulic machine is fluidly connected to this in the manner mentioned.
  • the suction section or tunnel enables a combination of optimized arrangement of the at least one hydraulic machine, short pressure medium flow path and optimal suction flow in the tank.
  • the unit comprises as components at least one cooling device for recooling the pressure medium and/or a control device for controlling the pressure medium supply and/or a hydraulic storage unit for storing hydraulic energy and/or a suction connection for the actuator for connecting a resuction line of the actuator and/or or other hydraulic, electrical, mechanical components.
  • a cooling device for recooling the pressure medium
  • a control device for controlling the pressure medium supply
  • a hydraulic storage unit for storing hydraulic energy and/or a suction connection for the actuator for connecting a resuction line of the actuator and/or or other hydraulic, electrical, mechanical components.
  • a separate carrier, a plate or a platform which carries the components mentioned directly or indirectly.
  • the components are arranged in a load-bearing manner on a common level, instead of being distributed across several levels.
  • Another advantage is that the components can be pre-assembled on this carrier.
  • the pre-assembled unit enables easier transport to final assembly.
  • the hydraulic machine is preferably coupled to a drive machine, which is also connected in a load-bearing manner, in particular is arranged on the carrier.
  • the carrier is designed to be so robust in terms of statics and deflection that it can be arranged in a self-supporting or self-supporting manner.
  • Self-supporting means that the beam does not have to be arranged directly on a foundation and that there is no need for a separate supporting structure. This means that the arrangement of the unit can be arranged very flexibly and the lack of a supporting structure frees up installation space, which makes access easier, especially for maintenance work or the like. In particular, the self-supporting carrier can then be arranged directly on the press cylinder.
  • the carrier preferably has a separate storage area at least for the at least one hydraulic machine and its drive machine, as well as the tank and the storage unit, and optionally the cooling device. This means that at least the heaviest or most maintenance-intensive components are easily accessible and can be assembled/dismantled independently of each other.
  • the tank and the at least one hydraulic machine are arranged adjacently.
  • a pressure medium flow path from a suction connection of the at least one hydraulic machine to the tank is short. This results in only a small connection pressure medium volume, which enables optimal suction. Accordingly, the fire load of the amount of pressure medium is reduced, which in turn reduces insurance costs.
  • the suction-side housing connection of the at least one hydraulic machine is flanged to the tank directly or via a short-sized suction pipe.
  • a ratio formed from the length of the pressure medium flow path or suction pipe and a characteristic size of the hydraulic machine or the unit, for example the housing diameter of the hydraulic machine is smaller or significantly smaller than 1.
  • An alternative criterion for brevity is, for example, that the pressure medium volume present in the pressure medium flow path or suction pipe is small, in particular negligibly small, in relation to the pressure medium volume in the tank, for example in the range of 1/200 or smaller.
  • these are preferably arranged distributed on both sides of the tunnel or tunnels. This improves individual accessibility, improves the balance of the unit, enables an even more compact arrangement of the components mentioned on the carrier and thus in turn reduces the potential bending of the carrier.
  • the suction sections are arranged and/or designed asymmetrically or symmetrically on the main section.
  • the unit is particularly well balanced if several hydraulic machines, in particular with a drive machine, and/or storage units and/or cooling units are provided and are arranged along and/or on both sides of the suction section(s).
  • the tank In order to optimize the flow in the tank and thus accelerate degassing, which in turn leads to a smaller tank volume, the tank has several communicating compartments or containers in a further development. This makes it possible to reduce the tank volume by up to 75%.
  • the tank has baffles through which it is divided into compartments or containers.
  • Both the baffles and the diffuser therefore work in the direction of a smaller amount of pressure medium, a smaller tank and the like. This reduces investment costs and operating costs.
  • an inlet or high-pressure line for connecting pressure medium between the pressure chamber of the actuator and a pressure connection of the at least one hydraulic machine and/or a low-pressure or return line for suctioning pressure medium from the tank into the pressure chamber penetrates a plane of the carrier in its edge region.
  • This is particularly important when arranging the unit on the actuator In this way, extremely short pressure medium flow paths for suction and pressure medium supply can be realized, which brings with it great advantages in terms of energy efficiency, the expenditure on device technology, achievable control or regulation quality and the installation space requirement.
  • the lines mentioned can pass through the carrier itself, which results in an even more compact unit, although care must be taken to ensure that the carrier is sufficiently stable.
  • the unit according to at least one aspect of the preceding description is particularly suitable for a modular design due to the connection between the tank and the hydraulic machine(s) that is supported according to the invention. This means that the unit can be scaled particularly well to different nominal outputs, which reduces the design effort for different nominal outputs.
  • a series of units according to the invention therefore has hydraulic units of different nominal powers, i.e. for supplying pressure medium to extrusion presses of different performance, which are each designed according to at least one aspect of the previous description.
  • the units have the same or at least predominantly the same arrangements of their components.
  • Cost-effective standardization can be achieved if at least one of the components is a common part in a further development across the units in the series.
  • An extruder according to the invention has a hydraulic actuator, in particular a press cylinder, and a hydraulic unit for supplying pressure medium to it, which is designed according to at least one aspect of the previous description.
  • An extruder 1 has an actuator 2 designed as a press cylinder and a hydraulic unit 6 according to the invention arranged on the top of its housing 4.
  • This has a carrier 8 designed as a base plate. Since this can be accessed by operating personnel 9, a circumferential railing 10 is provided on the edge.
  • the carrier 8 is attached directly to the housing 4 in a self-supporting manner and therefore does not require any further support structures to support it on the foundation 12 of the extruder 1.
  • the press cylinder 2 is therefore easily accessible for maintenance and operation at any time.
  • a tank 14 for storing the pressure medium is placed in the middle of the carrier 8.
  • units 16 consisting of a hydraulic machine or pump and drive machine for supplying pressure medium to the press cylinder 2, storage units 18 for recuperating pressure medium energy, a cooling device 20 for recooling the pressure medium that heats up in the process, and hydraulic control blocks 22 Control of the pressure medium volume flows and thus of the press cylinder 2.
  • the inlet and return lines 24, via which the tank and the hydraulic machines can be fluidically connected to the pressure chamber or chambers of the press cylinder are close to an edge-side gallery which is attached to the carrier 8 on the carrier 8 pierces.
  • the pressure medium flow paths for supplying the press cylinder 2 are very short, which has already been discussed above with regard to the advantages.
  • FIG. 2 in which the gallery, the units 16 and the press cylinder 2 are hidden, shows this circumstance from a different perspective.
  • the tank 14 has a central, cube-shaped main section 26 with a substantially square base area and a suction section or suction tunnel 28 which extends away from the main section in the longitudinal direction of the carrier 8.
  • the latter acts as a large-volume inlet for the hydraulic machines of the units 16 Figure 1 and enables their fluidically short connection to the tank 14 and energy-efficient suction with a high volume flow.
  • Figure 3 shows the unit 6 according to Figure 1 in a partial view from above.
  • a hydraulic unit for an extruder with components for supplying pressure medium to an actuator of the extruder wherein, according to the invention, at least those of the components are arranged adjacently and supportingly connected, between which a high pressure medium volume flow and / or hydraulic power flow can be transferred.
  • an extruder with the unit and a press cylinder, the unit being arranged on the press cylinder, in particular in a self-supporting manner, in order to minimize the length of the pressure medium flow paths between the unit and the press cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (14)

  1. Groupe hydraulique pour l'alimentation en fluide sous pression d'un actionneur hydraulique (2) d'une presse à filer (1), qui comprend au moins un réservoir (14) pour le stockage de fluide sous pression et au moins une machine hydraulique (16) reliée fluidiquement à celui-ci pour alimenter l'actionneur (2) en fluide sous pression, le réservoir (14) et l'au moins une machine hydraulique (16) étant reliés de manière portante, caractérisé en ce que le réservoir (14) a une section principale (26) à partir de laquelle s'étend une section d'aspiration rétrécie (28) avec laquelle un raccord de boîtier, notamment un raccord d'aspiration, de l'au moins une machine hydraulique (16) est relié fluidiquement.
  2. Groupe selon la revendication 1, avec un support (8) sur lequel sont agencés au moins le réservoir (14) et l'au moins une machine hydraulique (16).
  3. Groupe selon la revendication 2, dans lequel le support (8) est conçu pour pouvoir être agencé de manière autoportante.
  4. Groupe selon l'une quelconque des revendications précédentes, dans lequel le réservoir (14) et l'au moins une machine hydraulique (16) sont agencés de manière voisine.
  5. Groupe selon l'une quelconque des revendications précédentes, dans lequel un trajet d'écoulement de fluide sous pression depuis un raccord d'aspiration de l'au moins une machine hydraulique (16) jusqu'au réservoir (14) est dimensionné de manière courte.
  6. Groupe selon l'une quelconque des revendications précédentes, dans lequel un raccord de boîtier de l'au moins une machine hydraulique est bridé au réservoir (14) directement ou par l'intermédiaire d'un tuyau d'aspiration dimensionné de manière courte.
  7. Groupe selon l'une quelconque des revendications précédentes, avec plusieurs sections d'aspiration qui sont agencées et/ou formées de manière asymétrique ou symétrique sur la section principale.
  8. Groupe selon l'une quelconque des revendications précédentes, avec plusieurs machines hydrauliques (16) qui sont agencées le long et/ou des deux côtés de la section d'aspiration (28) ou des sections d'aspiration.
  9. Groupe selon l'une quelconque des revendications précédentes, dans lequel le réservoir (14) présente plusieurs compartiments ou récipients communicants.
  10. Groupe selon l'une quelconque des revendications précédentes, dans lequel un retour de fluide sous pression (24) pouvant être relié fluidiquement à une chambre sous pression de l'actionneur s'étend dans le réservoir (14), un diffuseur étant prévu à son embouchure dans le réservoir.
  11. Série avec des groupes hydrauliques de puissances nominales différentes, qui sont formés chacun selon l'une quelconque des revendications précédentes, les groupes présentant des agencements identiques ou au moins principalement identiques de leurs composants.
  12. Série selon la revendication 11, dans laquelle au moins un composant d'au moins deux des groupes est une pièce identique.
  13. Presse à filer, avec un actionneur hydraulique (2), notamment un cylindre de presse, et avec un groupe hydraulique (6) pour son alimentation en fluide sous pression, qui est formé selon l'une quelconque des revendications 1 à 10.
  14. Presse à filer selon la revendication 13, avec le groupe (6) selon la revendication 2 ou une revendication s'y rapportant, dans laquelle le support (8) est agencé de manière autoportante au moins dans la zone proche de l'actionneur ou sur celui-ci (2).
EP21176775.1A 2020-06-10 2021-05-31 Unité hydraulique pour une presse à filer, série de telles unités et presse à filer pourvue de l'unité hydraulique Active EP3922449B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020207274.4A DE102020207274B3 (de) 2020-06-10 2020-06-10 Hydraulik-Aggregat für eine Strangpresse, Baureihe derartiger Aggregate und Strangpresse mit dem Hydraulik-Aggregat

Publications (2)

Publication Number Publication Date
EP3922449A1 EP3922449A1 (fr) 2021-12-15
EP3922449B1 true EP3922449B1 (fr) 2023-10-11

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US2751076A (en) 1953-02-16 1956-06-19 Daniel L Lombard Extrusion press installation
CN202028626U (zh) * 2011-03-23 2011-11-09 昆山捷安特轻合金科技有限公司 结构改良的挤压机油路
DE102012009182A1 (de) 2012-05-10 2013-11-14 Sms Meer Gmbh Hydraulische Strangpresse sowie Verfahren zum Betrieb einer hydraulischen Strangpresse
CN204583884U (zh) * 2015-02-16 2015-08-26 梁润明 节能、高效、闭式加压供油型材挤压机
CN106180234A (zh) * 2016-07-20 2016-12-07 佛山市业精机械制造有限公司 一种低速铝型材挤压机

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EP3922449A1 (fr) 2021-12-15
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