EP3307459B1 - Device for core removal - Google Patents

Device for core removal Download PDF

Info

Publication number
EP3307459B1
EP3307459B1 EP16741843.3A EP16741843A EP3307459B1 EP 3307459 B1 EP3307459 B1 EP 3307459B1 EP 16741843 A EP16741843 A EP 16741843A EP 3307459 B1 EP3307459 B1 EP 3307459B1
Authority
EP
European Patent Office
Prior art keywords
striking
valve
hammers
hammer
piston
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
EP16741843.3A
Other languages
German (de)
French (fr)
Other versions
EP3307459A1 (en
Inventor
Stefan SUMEREDER
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.)
Fill GmbH
Original Assignee
Fill GmbH
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 Fill GmbH filed Critical Fill GmbH
Publication of EP3307459A1 publication Critical patent/EP3307459A1/en
Application granted granted Critical
Publication of EP3307459B1 publication Critical patent/EP3307459B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/005—Removing cores by vibrating or hammering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B22C19/06—Devices for rapping or loosening the pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof

Definitions

  • the invention relates to a device for coring a cast workpiece, according to the preamble of claim 1.
  • the invention further relates to a method for coring a cast workpiece according to the preamble of claim 7.
  • the workpieces can be vibrated by strikes with a hammer and the core can be broken in this way.
  • a device or a method of the type mentioned at the outset are known, for example, from US Pat DE10136713 A1 , as well as the JP 2000079460 A known. From the DE 2658455 A1 and the DE 102011088958 A1 pressure medium-powered striking mechanisms have also become known.
  • a disadvantage of the known solutions is, above all, that if the energy transfer is not optimal, the core can be destroyed.
  • a defined stroke frequency is understood to mean a predetermined stroke frequency.
  • the beat frequency can be selected and adjusted as required.
  • the invention thus makes it possible to freely select the hammer's impact frequency in a wide band range and to implement an optimal and defined energy transfer to the core.
  • the device has at least one actuator for actuating the at least one actuating means.
  • the at least one actuator comprises at least one valve, which is arranged between at least one compressor and a piston / cylinder unit of the pneumatic hammer.
  • the at least one valve can alternately connect areas of the working cylinder to the compressor on different sides of an impact piston which acts on a hammer head and is displaceably mounted in a longitudinal direction of a working cylinder of the piston / cylinder unit his.
  • a high impact frequency with a low mechanical load on the valve can be achieved in that the at least one valve is designed as a rotary valve.
  • the device has at least one control connected to the at least one actuator for controlling an impact frequency of the at least one hammer and an input unit connected to the control for inputting Has values for the beat frequency.
  • the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names.
  • the position information selected in the description such as, for example, top, bottom, side, etc., are based on the figure described and illustrated immediately, and these position information are to be applied to the new position in the event of a change in position.
  • a device 1 for coring a cast workpiece has one or more hammers 2, 3, 4. Furthermore, the device 1 has one or more adjusting means 5, 6 for setting an impact frequency of the hammers 2, 3, 4.
  • the hammers 2, 3, 4 can be fixed in place and act, for example, on a clamping plate, not shown here, on which the workpiece is clamped, and set it in vibration. Alternatively, the hammers can also act directly on the workpiece.
  • the energy transmitted by the hammers 2, 3, 4 destroys a mold core of the workpiece that is usually made of sand.
  • An actuator 7 can be provided for actuating the actuators 5, 6.
  • the actuator can be, for example, an electromechanical actuator, in particular in the form of an electric motor with a controllable speed.
  • a pneumatic hammer 9 is used as hammer 2, 3, 4.
  • the actuator 5, 6 used to control the pneumatic hammer 9 can comprise a valve 8 which is connected between a valve Fig. 1 with the reference numeral 10 provided compressor and a piston / cylinder unit 11 of the pneumatic hammer 9 is arranged.
  • the valve 8 can be used to connect the areas of the working cylinder 13 to the compressor 10 alternately on different sides of an impact piston 14 acting on a hammer head 12 and displaceably mounted in the longitudinal direction of a working cylinder 13 of a piston / cylinder unit 11 of the pneumatic hammer 9.
  • the valve 8 is, as in the Figures 3 and 4 shown, particularly preferably around a rotary valve.
  • the rotary valve can have a valve body penetrated by channels, which is surrounded by a valve jacket. Openings 17, 18, 19, 20 are arranged in the valve jacket and can be made to coincide with the outputs of the channels of the valve body.
  • the valve body can sit on a shaft which is driven by the actuator 7.
  • the rotation of the valve body alternately connects the channels to the opening 19 of the valve 8 connected to the compressor 10 and to the openings 17 and 18 of the valve 8.
  • the opening 20 of the valve 8 serves for ventilation and can be connected to the environment.
  • the openings 17 and 18 of the valve 8 are connected to the two openings 21 and 22 of the piston / cylinder unit 11.
  • a single valve 8 can also be used to control them, the number of openings 17-20 in the valve jacket and the channels in the valve body and the length of the valve body having to be increased accordingly.
  • a single valve 8 it is also possible to arrange a plurality of individual valve bodies on the shaft driven by the actuator 7.
  • the channels assigned to the individual hammers 2, 3, 4 can be arranged in the valve body or the valve bodies in such a way that there is a fixed phase offset between the striking movements of the hammers 2, 3, 4 results. In this arrangement, the hammers 2, 3, 4 move at the same frequency and out of phase with one another with a fixed phase offset.
  • the device can have a control 15 connected to the actuator 5, 6, for example a suitably programmed processor, and an input unit 16 connected to the control, for example a keyboard, for entering values for the Have impact frequency.
  • a control 15 connected to the actuator 5, 6, for example a suitably programmed processor
  • an input unit 16 connected to the control, for example a keyboard, for entering values for the Have impact frequency.
  • a stroke frequency for each hammer is determined in step i) and a phase shift between stroke movements of the hammers in step ii).
  • the hammers 2, 3, 4 execute a striking movement with the defined stroke frequency and phase shift and shatter a core present in the workpiece.
  • the frequency can be selected by means of a corresponding input unit 16.
  • the phase offset can be determined by a corresponding arrangement of the valve bodies on the shaft connected to the actuator 7 or a corresponding arrangement of the channels.
  • a plurality of valves 8 can also be provided with a corresponding phase offset of the openings 17, 18, 19, 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Entkernen eines gegossenen Werkstückes, gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for coring a cast workpiece, according to the preamble of claim 1.

Weiters betrifft die Erfindung ein Verfahren zum Entkernen eines gegossenen Werkstückes gemäß dem Oberbegriff von Anspruch 7.The invention further relates to a method for coring a cast workpiece according to the preamble of claim 7.

Zum Entkernen bzw. Entsanden von Werkstücken, die mittels eines Gießverfahrens hergestellt worden sind, können die Werkstücke durch Schläge mit einem Hammer in Schwingung versetzt werden und auf diese Weise der Kern zertrümmert werden.For coring or sanding workpieces that have been produced by means of a casting process, the workpieces can be vibrated by strikes with a hammer and the core can be broken in this way.

Eine Vorrichtung bzw. ein Verfahren der eingangs genannten Art sind beispielsweise aus der DE10136713 A1 , sowie der JP 2000079460 A bekannt geworden. Aus der DE 2658455 A1 und der DE 102011088958 A1 sind zudem druckmittelbetriebene Schlagwerke bewkannt geworden.A device or a method of the type mentioned at the outset are known, for example, from US Pat DE10136713 A1 , as well as the JP 2000079460 A known. From the DE 2658455 A1 and the DE 102011088958 A1 pressure medium-powered striking mechanisms have also become known.

Nachteilig an den bekannten Lösungen ist vor allem, dass sich bei keine optimale Energieübertragung zur Zertrümmerung des Kerns möglich ist.A disadvantage of the known solutions is, above all, that if the energy transfer is not optimal, the core can be destroyed.

Es ist daher eine Aufgabe der Erfindung, die oben genannten Nachteile des Stands der Technik zu überwinden.It is therefore an object of the invention to overcome the above-mentioned disadvantages of the prior art.

Diese Aufgabe wird mit einer Vorrichtung der eingangs genannten Art erfindungsgemäß durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst.This object is achieved according to the invention with a device of the type mentioned at the outset by the features of the characterizing part of claim 1.

Die erfindungsgemäße Lösung ermöglicht auf einfache Weise die Einstellung einer definierten Schlagfrequenz. Unter einer definierten Schlagfrequenz wird hierbei eine vorab festgelegte Schlagfrequenz verstanden. Die Schlagfrequenz kann je nach Erfordernis gewählt und eingestellt werden. Somit ermöglicht es die Erfindung, in einem weiten Bandbereich die Schlagfrequenz des Hammers frei zu wählen und eine optimale und definierte Energieübertragung auf den Kern zu realisieren.The solution according to the invention enables the setting of a defined stroke frequency in a simple manner. A defined stroke frequency is understood to mean a predetermined stroke frequency. The beat frequency can be selected and adjusted as required. The invention thus makes it possible to freely select the hammer's impact frequency in a wide band range and to implement an optimal and defined energy transfer to the core.

Um ein einfaches und zuverlässiges Betätigen des Stellmittels zu ermöglichen, kann es vorgesehen sein, dass die Vorrichtung zumindest einen Aktor zur Betätigung des zumindest einen Stellmittels aufweist.In order to enable simple and reliable actuation of the actuating means, it can be provided that the device has at least one actuator for actuating the at least one actuating means.

Als besonders günstig hat es sich herausgestellt, wenn das zumindest eine Stellglied zumindest ein Ventil umfasst, das zwischen zumindest einem Kompressor und einer Kolben/Zylindereinheit des Drucklufthammers angeordnet ist.It has turned out to be particularly favorable if the at least one actuator comprises at least one valve, which is arranged between at least one compressor and a piston / cylinder unit of the pneumatic hammer.

Um bei Verwendung eines Drucklufthammers auf zuverlässige Weise eine definierte Schlagfrequenz zu erzielen, können durch das zumindest eine Ventil abwechselnd an unterschiedlichen Seiten eines auf einen Hammerkopf wirkenden und in einer Längsrichtung eines Arbeitszylinders der Kolben/Zylindereinheit verschiebbar gelagerten Schlagkolbens gelegene Bereiche des Arbeitszylinders mit dem Kompressor verbunden sein.In order to reliably achieve a defined impact frequency when using a pneumatic hammer, the at least one valve can alternately connect areas of the working cylinder to the compressor on different sides of an impact piston which acts on a hammer head and is displaceably mounted in a longitudinal direction of a working cylinder of the piston / cylinder unit his.

Eine hohe Schlagfrequenz bei einer geringen mechanischen Belastung des Ventils lässt sich dadurch erzielen, dass das zumindest eine Ventil als Drehventil ausgeführt ist.A high impact frequency with a low mechanical load on the valve can be achieved in that the at least one valve is designed as a rotary valve.

Um auf einfache Weise eine Einstellung bzw. eine Vorauswahl der Schlagfrequenz zu ermöglichen, kann es vorgesehen sein, dass die Vorrichtung zumindest eine mit dem zumindest einen Stellglied verbundene Steuerung zur Steuerung einer Schlagfrequenz des zumindest einen Hammers sowie eine mit der Steuerung verbundene Eingabeeinheit zur Eingabe von Werten für die Schlagfrequenz aufweist.In order to enable an adjustment or a preselection of the impact frequency in a simple manner, it can be provided that the device has at least one control connected to the at least one actuator for controlling an impact frequency of the at least one hammer and an input unit connected to the control for inputting Has values for the beat frequency.

Die oben genannte Aufgabe lässt sich auch mit einem Verfahren der eingangs genannte Art erfindungsgemäß durch die Merkmale des kennzeichnenden Teils von Anspruch 7 lösen.The above-mentioned object can also be achieved according to the invention with a method of the type mentioned in the introduction by the features of the characterizing part of claim 7.

Zum besseren Verständnis der Erfindung wird diese anhand der nachfolgenden Figuren näher erläutert.For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

Es zeigen jeweils in stark vereinfachter, schematischer Darstellung:

Fig. 1
ein Blockdiagramm einer erfindungsgemäßen Vorrichtung;
Fig. 2
einen Hammer aus Fig. 1 mit einem Drehventil im näheren Detail;
Fig. 3
einen Querschnitt des Hammers und des Ventils aus Fig. 2 in einer ersten Schaltstellung des Drehventils;
Fig. 4
einen Querschnitt des Hammers und des Ventils aus Fig. 2 in einer zweiten Schaltstellung des Drehventils.
Each show in a highly simplified, schematic representation:
Fig. 1
a block diagram of a device according to the invention;
Fig. 2
a hammer out Fig. 1 with a rotary valve in more detail;
Fig. 3
a cross section of the hammer and the valve Fig. 2 in a first switching position of the rotary valve;
Fig. 4
a cross section of the hammer and the valve Fig. 2 in a second switching position of the rotary valve.

Einführend sei festgehalten, dass in den unterschiedlich beschriebenen Ausführungsformen gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen versehen werden, wobei die in der gesamten Beschreibung enthaltenen Offenbarungen sinngemäß auf gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen übertragen werden können. Auch sind die in der Beschreibung gewählten Lageangaben, wie z.B. oben, unten, seitlich usw. auf die unmittelbar beschriebene sowie dargestellte Figur bezogen und sind diese Lageangaben bei einer Lageänderung sinngemäß auf die neue Lage zu übertragen.To begin with, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names. The position information selected in the description, such as, for example, top, bottom, side, etc., are based on the figure described and illustrated immediately, and these position information are to be applied to the new position in the event of a change in position.

Gemäß Fig. 1 weist eine Vorrichtung 1 zum Entkernen eines gegossenen Werkstückes einen oder mehrere Hämmer 2, 3, 4 auf. Weiters weist die Vorrichtung 1 ein oder mehrere Stellmittel 5, 6 zur Einstellung einer Schlagfrequenz der Hämmer 2, 3, 4 auf. Die Hämmer 2, 3, 4, können ortsfest montiert sein und beispielsweise auf eine hier nicht näher dargestellte Aufspannplatte, auf welcher das Werkstück eingespannt ist, einwirken und diese in Schwingung versetzen. Alternativ können die Hämmer aber auch direkt auf das Werkstück einwirken. Durch die von dem Hämmern 2, 3, 4 übertragene Energie wird ein üblicherweise aus Sand hergestellter Formkern des Werkstückes zertrümmert. Zur Betätigung der Stellglieder 5, 6 kann ein Aktor 7 vorgesehen sein. Bei dem Aktor kann es sich beispielsweise um einen elektromechanischen Aktor handeln, insbesondere in Form eines Elektromotors mit steuerbarer Drehzahl.According to Fig. 1 a device 1 for coring a cast workpiece has one or more hammers 2, 3, 4. Furthermore, the device 1 has one or more adjusting means 5, 6 for setting an impact frequency of the hammers 2, 3, 4. The hammers 2, 3, 4 can be fixed in place and act, for example, on a clamping plate, not shown here, on which the workpiece is clamped, and set it in vibration. Alternatively, the hammers can also act directly on the workpiece. The energy transmitted by the hammers 2, 3, 4 destroys a mold core of the workpiece that is usually made of sand. An actuator 7 can be provided for actuating the actuators 5, 6. The actuator can be, for example, an electromechanical actuator, in particular in the form of an electric motor with a controllable speed.

Wie aus Fig. 2 ersichtlich ist, kommt als Hammer 2, 3, 4 ein Drucklufthammer 9 zum Einsatz. Das zur Steuerung des Drucklufthammers 9 verwendete Stellglied 5, 6 kann ein Ventil 8 umfassen, welches zwischen einem in Fig. 1 mit Bezugszeichen 10 versehenen Kompressor und einer Kolben/Zylindereinheit 11 des Drucklufthammers 9 angeordnet ist. Durch das Ventil 8 können abwechselnd an unterschiedlichen Seiten eines auf einen Hammerkopf 12 wirkenden und in einer Längsrichtung eines Arbeitszylinders 13 einer Kolben/Zylindereinheit 11 des Drucklufthammers 9 verschiebbar gelagerten Schlagkolbens 14 gelegene Bereiche des Arbeitszylinders 13 mit dem Kompressor 10 verbunden werden.How out Fig. 2 can be seen, a pneumatic hammer 9 is used as hammer 2, 3, 4. The actuator 5, 6 used to control the pneumatic hammer 9 can comprise a valve 8 which is connected between a valve Fig. 1 with the reference numeral 10 provided compressor and a piston / cylinder unit 11 of the pneumatic hammer 9 is arranged. The valve 8 can be used to connect the areas of the working cylinder 13 to the compressor 10 alternately on different sides of an impact piston 14 acting on a hammer head 12 and displaceably mounted in the longitudinal direction of a working cylinder 13 of a piston / cylinder unit 11 of the pneumatic hammer 9.

Bei dem Ventil 8 handelt es sich, wie in den Figuren 3 und 4 dargestellt, besonders bevorzugt um ein Drehventil. Das Drehventil kann einen von Kanälen durchsetzten Ventilkörper aufweisen, der von einem Ventilmantel umgeben ist. In dem Ventilmantel sind Öffnungen 17, 18, 19, 20 angeordnet, welche mit den Ausgängen der Kanäle des Ventilkörpers zur Deckung gebracht werden können. Der Ventilkörper kann auf einer Welle sitzen, welche mittels des Aktors 7 angetrieben wird. Durch die Drehung des Ventilkörpers werden die Kanäle wechselweise mit der mit dem Kompressor 10 verbundenen Öffnung 19 des Ventils 8 und mit den Öffnungen 17 und 18 des Ventils 8 verbunden. Die Öffnung 20 des Ventils 8 dient der Entlüftung und kann mit der Umgebung verbunden sein. Die Öffnungen 17 und 18 des Ventils 8 sind mit den beiden Öffnungen 21 und 22 der Kolben/Zylindereinheit 11 verbunden.The valve 8 is, as in the Figures 3 and 4 shown, particularly preferably around a rotary valve. The rotary valve can have a valve body penetrated by channels, which is surrounded by a valve jacket. Openings 17, 18, 19, 20 are arranged in the valve jacket and can be made to coincide with the outputs of the channels of the valve body. The valve body can sit on a shaft which is driven by the actuator 7. The rotation of the valve body alternately connects the channels to the opening 19 of the valve 8 connected to the compressor 10 and to the openings 17 and 18 of the valve 8. The opening 20 of the valve 8 serves for ventilation and can be connected to the environment. The openings 17 and 18 of the valve 8 are connected to the two openings 21 and 22 of the piston / cylinder unit 11.

In der in Fig. 2 oberen Stellung des Ventils 8, welche der in Fig. 3 dargestellten Stellung des Ventils 8 entspricht, wird Luft von Kompressor 10 über die Öffnung 21 in den Arbeitszylinder 13 der Kolben/Zylindereinheit 11 gepresst und der Schlagkolben 14 in Richtung des Hammerkopfes 15 bewegt. Die Öffnung 22 des Arbeitszylinders 13 ist hierbei über die Öffnungen 18 und 20 des Ventils 8 zur Entlüftung eines zwischen dem Schlagkolben 14 und dem Hammerkopf 15 gelegenen Bereichs des Arbeitszylinders 13 mit der Umgebung verbunden.In the in Fig. 2 upper position of the valve 8, which of the in Fig. 3 corresponds to the position shown of the valve 8, air from the compressor 10 is pressed through the opening 21 into the working cylinder 13 of the piston / cylinder unit 11 and the percussion piston 14 is moved in the direction of the hammer head 15. The opening 22 of the working cylinder 13 is connected to the surroundings via the openings 18 and 20 of the valve 8 for venting an area of the working cylinder 13 located between the percussion piston 14 and the hammer head 15.

In der in Figur 2 unteren Stellung des Ventils 8, welche der in Fig. 4 dargestellten Stellung des Ventils 8 entspricht, ist die Öffnung 22 des Arbeitszylinders 13 mit dem Kompressor 10 verbunden und der Schlagkolben 14 durch die Pressluft von dem Hammerkopf 15 wegbewegt. Die Öffnung 21 des Arbeitszylinders 13 ist hierbei über die Öffnungen 17 und 20 des Ventils 8 zur Entlüftung eines zwischen dem Schlagkolben 14 und einer dem Hammerkopf 15 gegenüberliegenden Stirnwand des Arbeitszylinders 13 gelegenen Bereichs des Arbeitszylinders 13 mit der Umgebung verbunden. Die Bewegungsrichtung des Schlagkolbens 14 ist in den Figuren 3 und 4 durch Pfeile angedeutet. Die Drehgeschwindigkeit der Welle, auf welcher der Ventilkörper sitzt, gibt hierbei die Schlagfrequenz des Hammerkopfes 15 vor. Zwischen den beiden Öffnungen 21 und 22 des Arbeitszylinders 13 kann noch eine weitere, zur Entlüftung dienende Öffnung 23 vorgesehen sein.In the in Figure 2 lower position of the valve 8, which of the in Fig. 4 corresponds to the position shown of the valve 8, the opening 22 of the working cylinder 13 is connected to the compressor 10 and the percussion piston 14 is moved away from the hammer head 15 by the compressed air. The opening 21 of the working cylinder 13 is connected to the surroundings via the openings 17 and 20 of the valve 8 for venting a region of the working cylinder 13 located between the percussion piston 14 and an end wall of the working cylinder 13 opposite the hammer head 15. The direction of movement of the percussion piston 14 is in the Figures 3 and 4 indicated by arrows. The rotational speed of the shaft on which the valve body is seated specifies the frequency of the hammer head 15. A further opening 23 serving for ventilation can be provided between the two openings 21 and 22 of the working cylinder 13.

Wie aus Fig. 1 ersichtlich ist, können bei Verwendung mehrerer Hämmer 3, 4 auch ein einziges Ventil 8 zu deren Steuerung verwendet werden, wobei die Anzahl der Öffnungen 17 - 20 in dem Ventilmantel und der Kanäle in dem Ventilkörper sowie die Länge des Ventilkörpers entsprechend erhöht werden müssen. Alternativ zur Anordnung eines langen Ventilkörpers im Fall der Verwendung eines einzigen Ventils 8 zur Steuerung mehrerer Hämmer 3, 4 können aber auch mehrere einzelne Ventilkörper an der von dem Aktor 7 angetriebenen Welle fest angeordnet werden.How out Fig. 1 it can be seen, if several hammers 3, 4 are used, a single valve 8 can also be used to control them, the number of openings 17-20 in the valve jacket and the channels in the valve body and the length of the valve body having to be increased accordingly. As an alternative to arranging a long valve body in the case of using a single valve 8 to control a plurality of hammers 3, 4, it is also possible to arrange a plurality of individual valve bodies on the shaft driven by the actuator 7.

Falls mehrere Hämmer 2, 3, 4 mit einem Ventil 8 gesteuert werden, so können die den einzelnen Hämmern 2, 3, 4, zugeordneten Kanäle in dem Ventilkörper bzw. den Ventilkörpern so angeordnet sein, dass sich ein fester Phasenversatz zwischen den Schlagbewegungen der Hämmer 2, 3, 4 ergibt. Die Hämmer 2, 3, 4 bewegen sich in dieser Anordnung mit der gleichen Frequenz und phasenverschoben mit einem festen Phasenversatz zueinander.If several hammers 2, 3, 4 are controlled by a valve 8, the channels assigned to the individual hammers 2, 3, 4 can be arranged in the valve body or the valve bodies in such a way that there is a fixed phase offset between the striking movements of the hammers 2, 3, 4 results. In this arrangement, the hammers 2, 3, 4 move at the same frequency and out of phase with one another with a fixed phase offset.

Zur Steuerung einer Schlagfrequenz des Hammers 2, 3, 5 kann die Vorrichtung ein mit dem Stellglied 5, 6 verbundene Steuerung 15, beispielsweise ein entsprechend programmierter Prozessor, sowie eine mit der Steuerung verbundene Eingabeeinheit 16, beispielsweise eine Tastatur, zur Eingabe von Werten für die Schlagfrequenz aufweisen.To control an impact frequency of the hammer 2, 3, 5, the device can have a control 15 connected to the actuator 5, 6, for example a suitably programmed processor, and an input unit 16 connected to the control, for example a keyboard, for entering values for the Have impact frequency.

Bei dem erfindungsgemäßen Verfahren werden in einem Schritt i) für jeden Hammer eine Schlagfrequenz und in einem Schritt ii) eine Phasenverschiebung zwischen Schlagbewegungen der Hämmer festgelegt. In einem den Schritten i) - ii) zeitlich nachfolgendem Schritt iii) führen die Hämmer 2, 3, 4 mit der festgelegten Schlagfrequenz und Phasenverschiebung eine Schlagbewegung aus und zertrümmern einen in dem Werkstück vorhandenen Kern.In the method according to the invention, a stroke frequency for each hammer is determined in step i) and a phase shift between stroke movements of the hammers in step ii). In a step iii) following steps i) - ii) in time, the hammers 2, 3, 4 execute a striking movement with the defined stroke frequency and phase shift and shatter a core present in the workpiece.

Das Auswählen der Frequenz kann wie bereits oben erwähnt mittels einer entsprechenden Eingabeeinheit 16 erfolgen. Die Festlegung des Phasenversatzes kann durch eine entsprechende Anordnung der Ventilkörper auf der mit dem Aktor 7 verbundenen Welle bzw. eine entsprechende Anordnung der Kanäle erfolgen. Alternativ hierzu können aber auch mehrere Ventile 8 mit einem entsprechenden Phasenversatz der Öffnungen 17, 18, 19, 20 vorgesehen sein.As already mentioned above, the frequency can be selected by means of a corresponding input unit 16. The phase offset can be determined by a corresponding arrangement of the valve bodies on the shaft connected to the actuator 7 or a corresponding arrangement of the channels. As an alternative to this, however, a plurality of valves 8 can also be provided with a corresponding phase offset of the openings 17, 18, 19, 20.

Der Ordnung halber sei abschließend darauf hingewiesen, dass zum besseren Verständnis des Aufbaus der erfindungsgemäßen Vorrichtung diese bzw. deren Bestandteile teilweise unmaßstäblich und/oder vergrößert und/oder verkleinert dargestellt wurden.For the sake of order, it should finally be pointed out that, for a better understanding of the construction of the device according to the invention, these or their components have been partially shown to scale and / or enlarged and / or reduced.

BezugszeichenaufstellungREFERENCE NUMBERS

11
Vorrichtungcontraption
22
Hammerhammer
33
Hammerhammer
44
Hammerhammer
55
Stellmittelactuating means
66
Stellmittelactuating means
77
Aktoractuator
88th
VentilValve
99
DrucklufthammerDrucklufthammer
1010
Kompressorcompressor
1111
Kolben/ZylindereinheitPiston / cylinder unit
1212
Hammerkopfhammerhead
1313
Arbeitszylinderworking cylinder
1414
Schlagkolbenpercussion piston
1515
Steuerungcontrol
1616
Eingabeeinheitinput unit
1717
Öffnungopening
1818
Öffnungopening
1919
Öffnungopening
2020
Öffnungopening
2121
Öffnungopening
2222
Öffnungopening
2323
Öffnungopening

Claims (7)

  1. A device (1) for removing the core from a cast workpiece, wherein the device (1) comprises at least one hammer (2, 3, 4), wherein the device (1) comprises at least one adjusting means (5, 6) for setting a striking frequency of the at least one hammer (2, 3, 4), wherein the device (1) comprises several hammers (2, 3, 4) coupled to one another for phase-shifted striking movements, characterized in that the hammers (2, 3, 4) are jackhammers (9) and the striking movements of each hammer (2, 3, 4) are phase-shifted with respect to each of the striking movements of the other hammers (2, 3, 4).
  2. The device according to claim 1, characterized in that it comprises at least one actuator (7) for actuating the at least one adjusting means (5, 6).
  3. The device according to claim 2, characterized in that the at least one adjusting element (5, 6) comprises at least one valve (8), which is arranged between at least one compressor (10) and a piston/cylinder unit (11) of the jackhammer (9).
  4. The device according to claim 3, characterized in that by means of the at least one valve (8), sections of a working cylinder (13) located on different sides of a striking piston (14) - said striking piston (14) acting on a hammer head (12) and being mounted so as to be displaceable in a longitudinal direction of the working cylinder (13) of the piston/cylinder unit (11) - are alternately connected to the compressor (10).
  5. The device according to claim 4, characterized in that the at least one valve (8) is designed as a rotary valve.
  6. The device according to one of claims 1 to 5, characterized in that it comprises at least one controller (15) connected to the at least one adjusting element (5, 6) for controlling a striking frequency of the at least one hammer as well as an input unit (16) connected to the controller for inputting values for the striking frequency.
  7. A method for removing the core of a cast workpiece with at least two hammers (2, 3, 4), characterized in that in a step i) a striking frequency is determined for each hammer (2, 3, 4) and in a step ii) a phase shift between striking movements of the at least two hammers is determined, wherein in a step iii) temporally subsequent to the steps i)-ii) the at least two hammers (2, 3, 4) carry out a striking movement with the determined striking frequency and phase shift and shatter a core present in the workpiece, wherein the hammers (2, 3, 4) are designed as jackhammers (9).
EP16741843.3A 2015-06-15 2016-06-15 Device for core removal Active EP3307459B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50494/2015A AT517385B1 (en) 2015-06-15 2015-06-15 Device for coring
PCT/AT2016/050202 WO2016201475A1 (en) 2015-06-15 2016-06-15 Device for core removal

Publications (2)

Publication Number Publication Date
EP3307459A1 EP3307459A1 (en) 2018-04-18
EP3307459B1 true EP3307459B1 (en) 2020-01-15

Family

ID=56511272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16741843.3A Active EP3307459B1 (en) 2015-06-15 2016-06-15 Device for core removal

Country Status (5)

Country Link
EP (1) EP3307459B1 (en)
CN (1) CN107743424A (en)
AT (1) AT517385B1 (en)
MX (1) MX2017014896A (en)
WO (1) WO2016201475A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017222702A1 (en) 2017-12-14 2019-06-19 Bayerische Motoren Werke Aktiengesellschaft Method for coring castings

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2217507B1 (en) * 1972-04-12 1973-08-09 Bauer, Karlheinz, Dr.-Ing., 8898 Schrobenhausen Hydraulic hammer and its use for hammer drill
FR2242204A2 (en) * 1973-08-28 1975-03-28 Gesab Automation Betonherstell Control valve for pneumatic piston tool - is square box with outlet on each face and rotary valve spindle
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
DE2658455C3 (en) * 1976-12-23 1981-01-22 Fried. Krupp Gmbh, 4300 Essen Pressure medium operated striking mechanism
DE2928870A1 (en) * 1979-07-17 1981-02-12 Koehring Gmbh Bomag Division MASS COMPENSATED PAMPING AND / OR BLOWING SYSTEM
US5022309A (en) * 1989-08-17 1991-06-11 Ingersoll-Rand Company Variable frequency control for percussion actuator
DE4343589C1 (en) * 1993-12-21 1995-04-27 Klemm Guenter Fluid operated hammer
DE4419499A1 (en) * 1994-06-03 1995-12-07 Interoc Vertriebsgesellschaft Hydraulic impact device with infinitely variable number of impacts and impact energy
DE29616860U1 (en) * 1996-09-27 1996-12-05 Vaw Mandl & Berger Gmbh, Linz Device for monitoring the coring of castings
JP2000079460A (en) * 1998-09-04 2000-03-21 Uinberu:Kk Striking device
EP1040884A1 (en) * 1999-04-02 2000-10-04 Fata Aluminium Division of Fata Group S.p.A. Vibratory decoring machine
US6557652B2 (en) * 2000-05-18 2003-05-06 Guenter Klemm Method for performing ground or rock work and hydraulic percussion device
CN2851766Y (en) * 2005-10-31 2006-12-27 江兮夏 Two-way makeshift valve
KR100986853B1 (en) * 2008-04-29 2010-10-08 현대자동차주식회사 A hammering apparatus for removing a sand from a molded product of cylinder block
ITTO20090437A1 (en) * 2009-06-09 2010-12-10 Artimpianti S N C Di Genre Walter E Botta Alberto MACHINE MACHINE
FR2954195A1 (en) * 2009-12-23 2011-06-24 Fonderie Du Poitou Aluminium Hammering process for performing disintegration of molding insert to extract fixed part with frame, comprises hammering the part using a hammer, and controlling efficiency of hammering in function of a specified information
JP5526289B2 (en) * 2010-08-09 2014-06-18 エルジー・ケム・リミテッド Battery pack with new structure
DE102011088958A1 (en) * 2011-12-19 2013-06-20 Robert Bosch Gmbh Pneumatic tool device for hand-held power tool e.g. drilling hammer, has switching valves that are provided for switching pressurization of operating elements and designed as rotary valve
DE102011088979A1 (en) * 2011-12-19 2013-06-20 Robert Bosch Gmbh Pneumatic tool device
AT513849B1 (en) * 2013-03-04 2014-08-15 Tmt Bbg Res And Dev Gmbh Control of the working frequency of a striking mechanism
CN204151771U (en) * 2014-10-17 2015-02-11 国家电网公司 The self-propelled roller-compactor of transformer station's ground

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AT517385B1 (en) 2019-02-15
EP3307459A1 (en) 2018-04-18
CN107743424A (en) 2018-02-27
WO2016201475A1 (en) 2016-12-22
AT517385A1 (en) 2017-01-15
MX2017014896A (en) 2018-04-26

Similar Documents

Publication Publication Date Title
EP2373446B1 (en) Method for operating a hammer
EP2006079A1 (en) Bending machine
DE19729368A1 (en) Device and method for mechanically joining sheets, profiles and / or multi-sheet connections
EP2176036B1 (en) Hand-held power tool comprising a spring unit
DE102010015173A1 (en) Method for operating a ground milling machine with a height-adjustable milling drum
EP2564943A2 (en) Oscillation exciter for creating an aligned excited oscillation
WO2016135169A1 (en) Hammering device for influencing workpieces and associated method
DE19811345C2 (en) Soil compacting device
EP3463717B1 (en) Method for the core removal of cast parts
EP3307459B1 (en) Device for core removal
EP1984169A1 (en) Servopress
AT15916U1 (en) Device for coring a workpiece
DE102012102525A1 (en) Multi-mode press drive for a press and method of operating a press drive
EP2960374B1 (en) Working device with stamping mechanism or percussion mechanism with crossed crank drive
EP0260546A2 (en) Forging machine
DE202015009453U1 (en) Drawbar lift for packaging machine
WO2018228795A1 (en) Method and device for the impact treatment of transition radii of a crankshaft
DE10107484B4 (en) Stroke position control of the ram of punch presses
DE102007030544A1 (en) Device for processing workpieces
EP1690647B1 (en) Air impact device with recoil damping
DE3704845A1 (en) SERVO VALVE, ESPECIALLY DIRECTLY CONTROLLED SERVO VALVE
DE102005062235B3 (en) Load-dependent actuating arrangement
EP2243572A2 (en) Manipulator for forging machines
DE10065255B4 (en) Multistage press
DE202008018169U1 (en) Short-stroke hammer with electric direct drive

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180111

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190809

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016008458

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1224711

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200215

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200115

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200415

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200607

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200515

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200416

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200415

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016008458

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20201016

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200615

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200615

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200115

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1224711

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210615

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230516

Year of fee payment: 8

Ref country code: FR

Payment date: 20230523

Year of fee payment: 8

Ref country code: DE

Payment date: 20230522

Year of fee payment: 8