EP1825958A1 - Device for shearing equipment with a water jet or abrasive water jet - Google Patents

Device for shearing equipment with a water jet or abrasive water jet Download PDF

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Publication number
EP1825958A1
EP1825958A1 EP20070450011 EP07450011A EP1825958A1 EP 1825958 A1 EP1825958 A1 EP 1825958A1 EP 20070450011 EP20070450011 EP 20070450011 EP 07450011 A EP07450011 A EP 07450011A EP 1825958 A1 EP1825958 A1 EP 1825958A1
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EP
European Patent Office
Prior art keywords
pressure
region
switchable valve
reducing
jet
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Granted
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EP20070450011
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German (de)
French (fr)
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EP1825958B1 (en
Inventor
Franz Trieb
Alwin Timmermann
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BHDT GmbH
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BHDT GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
    • B24C7/0023—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier of feed pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/08—Cutter sprayer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0443—By fluid application
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0591—Cutting by direct application of fluent pressure to work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/081—With randomly actuated stopping means
    • Y10T83/091—Responsive to work sensing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/364—By fluid blast and/or suction

Definitions

  • the invention relates to a device for controlling the loading of the workpiece by a water jet or a Wasserabrasivstrahl in a similar cutting system.
  • Water jet or Wasserabrasivstrahl devices essentially serve to cut out of possibly hard and / or brittle planar workpieces desired shapes.
  • Advantageously, e.g. By means of Wasserabrasiv cutting systems accurate contours of glass surfaces, such as discs created.
  • workpieces are also machined out of an oversize blanket material by means of a water-jet or water-abrasive jet method, whereby either a cutting position can be made from the edge or a continuous hole is initially introduced into the material surface or wall, from which the penetrating one enters Beam is effective in generating a blade during relative movement.
  • the directed onto the surface cutting beam is formed until it pierces through the material wall with reduced energy or reduced pressure, which is an essential for actual cutting position Pressure increase takes place.
  • the technology according to which a through hole is placed in a Vormaterialwand with reduced pressurization, after which an increase in pressure of the jet medium and a cut position by targeted relative movement between the starting material and jet nozzle, represents a practiced procedure, each of which includes a switching operation of the Düsenbeetzhausung.
  • a switch-on and switching process at pressures in the medium of up to 450 MPa can be time-consuming and / or stress the system components highly wearing.
  • a targeted economical and equipment advantageous, especially the device gentle conversion or switching a cutting system from Anschmandruck on working pressure of a water jet or Wasserabrasivstrahles is a technical-economic problem to be solved by the invention.
  • control device is positioned between a Hochdruckwasserkgoriskar, eg a high-pressure pump or the like, and a jet nozzle of the system, a supply and at least two parallel flow areas, which are ultimately brought together again in a supply line of the nozzle, said at least one of the flow areas is designed as a high-pressure area with at least one switchable valve and at least one further pressure-reducing area has a pressure reducing means.
  • the advantages of the invention are essentially due to the fact that, when the high-pressure water is supplied to the control device, the high-pressure region up to the switchable valve and the pressure-reducing region up to the pressure-reducing means are acted upon.
  • the pressure reducing means is then loaded in the direction of the admission line to the nozzle with the differential pressure and that high or cutting pressure minus the Anschmandruck reduced by the flow in the pressure reducing means.
  • a breakthrough created by the workpiece or Vormaterialwand can be released by the valve in the high pressure region in this the flow, the admission of the nozzle thus takes place at high pressure.
  • the cutting pressure acts back on the pressure reducing agent, which is thereby relieved.
  • This swelling and acting only in one direction load on the pressure reducing agent contributes significantly to its life or durability in intermittent operation.
  • a switchable valve can be arranged in the pressure-reducing region of the device, which is in operative connection with the switchable valve in the high-pressure region in terms of control technology.
  • the valve is opened in the pressure-reducing region when the flat primary material body is fired, thereby forming a jet with a reduced energy. After breakthrough, the valve is opened in the high-pressure region, whereby a high-energy cutting jet is formed.
  • the tax-technical operative connection between the switchable valves is such that the valve in the pressure-reducing region is always switched to that in the high-pressure region.
  • the pressure reducing means is arranged in front of the switchable valve in the flow direction of the pressurized water in the pressure-reducing region. Such a particularly favorable stress or long life of the pressure reducing agent can be achieved.
  • the pressure reducing means is designed as a throttle.
  • a diaphragm can be made particularly stable in the throttle and anchored in the part.
  • At least the switchable valve can be controlled in the high pressure region by at least one sensor.
  • a control device 1 which receives high-pressure water H from a supply means, e.g. with a pressure of 420 MPa, can be fed.
  • a supply line 11 is a switchable valve 13, by means of which the device 1 can be applied controlled.
  • a continued supply line 11 is divided into at least two parallel flow areas, which are ultimately brought together again and form an admission line 12 for a nozzle (not shown).
  • pressurized water flows into the parallel flow areas 2,3; on the one hand in a high-pressure region 2 to a closed valve 21, on the other hand in a pressure-reducing region 3 by a pressure reducing means 31 in a supply line 12 for a nozzle, in which formed at reduced pressure of, for example 40 to 150 MPa, a beam for an attachment of sheet material becomes.
  • FIG. 2 shows a pressure-reducing region 3 with a controllable valve 32 and downstream of a pressure-reducing means 31 in the case of a similarly designed high-pressure region 2 of a control device 1.
  • valves 21 and 32 are controllable according to the method, wherein the control unit can be connected to a hole punch-through sensor.
  • a control device 1 according to the invention is shown, wherein in the pressure-reducing region 3 in the flow direction, a pressure reducing means 31 is connected upstream of a controllable valve 32.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The device has a controllable valve (32), where the device is positioned between a high pressure pump and a jet nozzle of a cutting system. An inlet (11) and two flow regions (2, 3) are provided in the device. The flow regions are joined in an admission pipe (12) of the nozzle, where one region is formed as a high pressure region with a switchable valve, and a pressure reducing region comprises a pressure reduction unit (31).

Description

Die Erfindung betrifft eine Einrichtung zur Steuerung der Beaufschlagung des Werkstückes durch einen Wasserstrahl oder einen Wasserabrasivstrahl in einer dergleichen Schneidanlage.The invention relates to a device for controlling the loading of the workpiece by a water jet or a Wasserabrasivstrahl in a similar cutting system.

Anlagen, in welchen ein dünner Wasserstrahl mit hoher Geschwindigkeit und Energie auf ein Werkstück trifft und dieses bei einer Relativbewegung durchtrennt, also als Schneidmittel wirkt, sind bekannt und stellen den Stand der Technik dar. Dabei können Wasser alleine oder Wasser und darin mitgeführte Partikel, welche abrasiv wirksam sind, als Schneidmittel verwendet werden.Plants in which a thin jet of water at high speed and energy hits a workpiece and this cuts in a relative movement, so acts as a cutting means are known and constitute the prior art. In this case, water alone or water and entrained therein, which particles are abrasive effective to be used as cutting means.

Wasserstrahl- oder Wasserabrasivstrahl-Einrichtungen dienen im Wesentlichen dazu, aus gegebenenfalls harten und/oder spröden flächigen Werkstücken gewünschte Formen herauszuschneiden. Mit Vorteil werden z.B. mittels Wasserabrasiv-Schneidanlagen genaue Konturen von Glasflächen, beispielsweise Scheiben, erstellt.Water jet or Wasserabrasivstrahl devices essentially serve to cut out of possibly hard and / or brittle planar workpieces desired shapes. Advantageously, e.g. By means of Wasserabrasiv cutting systems accurate contours of glass surfaces, such as discs created.

Erfolgt nun in derartigen Schneidanlagen eine Schnitterstellung durch relative Führung des Schneidstrahles von außen in das flächige Werkstück, so kann dieser mit einem für eine hohe Schneidleistung erforderlichen großen Druck und hoher Geschwindigkeit bzw. Energie ausgebildet sein.If, in such cutting systems, a cutting position is now achieved by relative guidance of the cutting beam from the outside into the flat workpiece, then this can be formed with a high pressure and high speed or energy required for a high cutting performance.

Vielfach sind auch Werkstücke aus einem mit Übermaß gefertigten flächigem Vormaterial mittels eines Wasserstrahl- oder Wasserabrasivstrahl-Verfahrens herauszuarbeiten, wobei entweder eine Schnitterstellung vom Rand aus erfolgen kann oder vorerst ein durchgehendes Loch in die Materialfläche bzw. -wand eingebracht wird, von welchem ausgehend der durchdringende Strahl bei Relativbewegung schnitterzeugend wirksam ist.In many cases, workpieces are also machined out of an oversize blanket material by means of a water-jet or water-abrasive jet method, whereby either a cutting position can be made from the edge or a continuous hole is initially introduced into the material surface or wall, from which the penetrating one enters Beam is effective in generating a blade during relative movement.

Bei spröden Werkstoffen, wie beispielsweise Glas oder dergleichen, ist eine Erstellung eines Loches durch die Vormaterialwand oft schwierig, weil der Wasserabrasivstrahl durch dessen hohe Geschwindigkeit bzw. Energie einen hohen Auftreffdruck aufweist, welcher zur Zerstörung oder zum Brechen des Vormaterials führen kann.For brittle materials, such as glass or the like, creating a hole through the Vormaterialwand is often difficult because the Wasserabrasivstrahl by its high speed or energy has a high impact pressure, which can lead to the destruction or breaking of the starting material.

Um diese Gefahr auszuschalten, wird zumeist bei einem Einbringen eines Durchgangsloches, was in Fachkreisen auch als Anschießen bezeichnet wird, der auf die Fläche gerichtete Schneidstrahl bis zum Durchschlag durch die Materialwand mit verringerter Energie bzw. verringertem Druck ausgebildet, wonach für eine eigentliche Schnitterstellung eine wesentliche Druckerhöhung erfolgt.In order to eliminate this risk, usually at a penetration of a through hole, which is referred to in professional circles as shooting, the directed onto the surface cutting beam is formed until it pierces through the material wall with reduced energy or reduced pressure, which is an essential for actual cutting position Pressure increase takes place.

Die Technologie, nach welcher in eine Vormaterialwand mit verminderter Druckbeaufschlagung ein durchgehendes Loch eingebracht wird, wonach eine Druckerhöhung des Strahlmediums und eine Schnitterstellung durch gezielte Relativbewegung zwischen Vormaterial und Strahldüse erfolgen, stellt eine praktizierte Vorgangsweise dar, die jeweils einen Umschaltvorgang der Düsenbeaufschlagung beinhaltet. Ein derartiger Einschalt- und Umschaltvorgang bei Drücken im Medium von bis 450 MPa kann jedoch zeitaufwendig sein und/oder die Anlagenteile hoch verschleißend beanspruchen.The technology, according to which a through hole is placed in a Vormaterialwand with reduced pressurization, after which an increase in pressure of the jet medium and a cut position by targeted relative movement between the starting material and jet nozzle, represents a practiced procedure, each of which includes a switching operation of the Düsenbeaufschlagung. However, such a switch-on and switching process at pressures in the medium of up to 450 MPa can be time-consuming and / or stress the system components highly wearing.

Eine gezielt wirtschaftliche und auch anlagentechnisch vorteilhafte, insbesondere die Einrichtung schonende Umstellung bzw. Umschaltung einer Schneidanlage vom Anschießdruck auf Arbeitsdruck eines Wasserstrahles oder Wasserabrasivstrahles ist ein technisch-wirtschaftliches Problem, das durch die Erfindung gelöst werden soll.A targeted economical and equipment advantageous, especially the device gentle conversion or switching a cutting system from Anschießdruck on working pressure of a water jet or Wasserabrasivstrahles is a technical-economic problem to be solved by the invention.

Es ist also Aufgabe der Erfindung, eine Vorrichtung zu schaffen, welche einen wesentlich geringeren Wartungs- oder Reparaturaufwand erfordert und mittels welcher eine Mediumbeaufschlagung einer Düse unmittelbar nach Erstellung eines Durchgangsloches in einem flächigen Vormaterial möglichst ohne Zeitverlust auf einen hohen Druck und zwar den Schneiddruck umschaltbar ist.It is therefore an object of the invention to provide a device which requires a much lower maintenance or repair costs and by means of which a Mediumbeaufschlagung a nozzle immediately after creation of a through-hole in a flat starting material as possible without loss of time to a high pressure and although the cutting pressure is switchable ,

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Steuereinrichtung zwischen einem Hochdruckwasserbereitstellungsmittel, z.B. einer Hochdruckpumpe oder dergleichen, und einer Strahldüse der Anlage positioniert ist, eine Zuführung und mindestens zwei parallel geführte Durchflussbereiche aufweist, die letztlich wieder in einer Beaufschlagungsleitung der Düse zusammengeführt sind, wobei mindestens einer der Durchflussbereiche als Hochdruckbereich mit mindestens einem schaltbaren Ventil ausgebildet ist und mindestens ein weiterer druckreduzierender Bereich ein Druckminderungsmittel aufweist.This object is achieved in that the control device is positioned between a Hochdruckwasserbereitstellungsmittel, eg a high-pressure pump or the like, and a jet nozzle of the system, a supply and at least two parallel flow areas, which are ultimately brought together again in a supply line of the nozzle, said at least one of the flow areas is designed as a high-pressure area with at least one switchable valve and at least one further pressure-reducing area has a pressure reducing means.

Die Vorteile der Erfindung sind im Wesentlichen dadurch begründet, dass bei Zufuhr des Hochdruckwassers in die Steuereinrichtung der Hochdruckbereich bis zum schaltbaren Ventil und der druckreduzierende Bereich bis zum Druckminderungsmittel beaufschlagt werden. Das Druckminderungsmittel ist sodann in Richtung zur Beaufschlagungsleitung zur Düse mit dem Differenzdruck und zwar Hoch- oder Schneiddruck minus dem durch die Strömung im Druckminderungsmittel geminderten Anschießdruck belastet. Ist nun ein Durchbruch durch die Werkstück- oder Vormaterialwand erstellt, kann durch das Ventil im Hochdruckbereich in diesem der Durchfluss freigegeben werden, wobei die Beaufschlagung der Düse somit mit hohem Druck erfolgt. Gleichzeitig wirkt der Schneiddruck zurück auf das Druckminderungsmittel, welches dadurch entlastet ist. Diese schwellende und nur in einer Richtung wirkende Belastung auf das Druckminderungsmittel trägt wesentlich zu dessen Lebensdauer bzw. Haltbarkeit im aussetzenden Betrieb bei.The advantages of the invention are essentially due to the fact that, when the high-pressure water is supplied to the control device, the high-pressure region up to the switchable valve and the pressure-reducing region up to the pressure-reducing means are acted upon. The pressure reducing means is then loaded in the direction of the admission line to the nozzle with the differential pressure and that high or cutting pressure minus the Anschießdruck reduced by the flow in the pressure reducing means. Now, if a breakthrough created by the workpiece or Vormaterialwand, can be released by the valve in the high pressure region in this the flow, the admission of the nozzle thus takes place at high pressure. At the same time the cutting pressure acts back on the pressure reducing agent, which is thereby relieved. This swelling and acting only in one direction load on the pressure reducing agent contributes significantly to its life or durability in intermittent operation.

Nach einer bevorzugten Ausführungsform der Erfindung kann im druckreduzierenden Bereich der Einrichtung ein schaltbares Ventil angeordnet sein, welches mit dem schaltbaren Ventil im Hochdruckbereich steuertechnisch in Wirkverbindung steht.According to a preferred embodiment of the invention, a switchable valve can be arranged in the pressure-reducing region of the device, which is in operative connection with the switchable valve in the high-pressure region in terms of control technology.

Erfindungsgemäß wird bei einem Anschießen des flächigen Vormaterialkörpers das Ventil im druckreduzierenden Bereich geöffnet und dadurch ein mit verringerter Energie bohrender Strahl gebildet. Nach dem Durchbruch erfolgt ein Offenstellen des Ventils im Hochdruckbereich, wodurch ein hochenergetischer Schneidstrahl gebildet wird. Die steuertechnische Wirkverbindung zwischen den schaltbaren Ventilen ist dabei derart, dass das Ventil im druckreduzierenden Bereich immer nach demjenigen im Hochdruckbereich geschaltet wird.According to the invention, the valve is opened in the pressure-reducing region when the flat primary material body is fired, thereby forming a jet with a reduced energy. After breakthrough, the valve is opened in the high-pressure region, whereby a high-energy cutting jet is formed. The tax-technical operative connection between the switchable valves is such that the valve in the pressure-reducing region is always switched to that in the high-pressure region.

Es hat sich als besonders vorteilhaft herausgestellt, wenn in Flussrichtung des Druckwassers im druckreduzierenden Bereich das Druckminderungsmittel vor dem schaltbaren Ventil angeordnet ist. Derart kann eine besonders günstige Beanspruchung bzw. lange Lebensdauer des Druckminderungsmittels erreicht werden.It has been found to be particularly advantageous if the pressure reducing means is arranged in front of the switchable valve in the flow direction of the pressurized water in the pressure-reducing region. Such a particularly favorable stress or long life of the pressure reducing agent can be achieved.

Nach einer weiteren efindungsgemäßen Variante ist das Druckminderungsmittel als Drossel ausgebildet. Derart kann eine Blende in der Drossel besonders stabil ausgebildet und im Teil verankert werden.According to another variant of the invention, the pressure reducing means is designed as a throttle. Such a diaphragm can be made particularly stable in the throttle and anchored in the part.

Insbesondere wirtschaftlich ist von Vorteil, wenn zumindest das schaltbare Ventil im Hochdruckbereich durch mindestens einen Sensor steuerbar ist.In particular, it is economically advantageous if at least the switchable valve can be controlled in the high pressure region by at least one sensor.

Die damit erreichten Vorteile bestehen darin, dass unmittelbar nach dem Anschießen, also wenn der Strahl mit verminderter Energie den Durchbruch durch die Werkstückwand erstellt hat, ohne Zeitverzögerung, durch den Sensor gesteuert, das Hochdruckventil geöffnet wird und der Schneidvorgang beginnen kann. Dies stellt nicht nur eine Zeiteinsparung dar, sondern ist auch ein wesentlicher Schritt zur Automatisierung der Schneidanlage. Als Sensoren können Schallsensoren, optische Sensoren oder dergleichen eingesetzt werden.The advantages thus achieved are that immediately after firing, that is, when the beam of reduced energy has made the breakthrough through the workpiece wall, without time delay, controlled by the sensor, the high pressure valve is opened and the cutting process can begin. Not only does this save time, it is also an essential step in automating the cutting system. As sensors sound sensors, optical sensors or the like can be used.

Durch schematische Darstellungen soll die Erfindung näher erläutert werden. Es zeigen

  • Fig. 1: Eine Steuereinrichtung mit einem schaltbaren Ventil im Hochdruckbereich;
  • Fig. 2: Eine Steuereinrichtung mit einem einem Druckminderungsmittel vorgeschalteten schaltbaren Ventil;
  • Fig. 3: Eine Steuereinrichtung mit einem einem Druckminderungsmittel nachgeschalteten steuerbaren Ventil.
By schematic representations, the invention will be explained in more detail. Show it
  • Fig. 1: A control device with a switchable valve in the high pressure region;
  • Fig. 2: a control device with a pressure reducing means upstream switchable valve;
  • Fig. 3: A control device with a pressure reducing means downstream controllable valve.

Aus Fig. 1 ist schematisch eine Steuereinrichtung 1 ersichtlich, welcher Hochdruckwasser H von einem Bereitstellungsmittel, z.B. mit einem Druck von 420 MPa, zuführbar ist. In einer Zuführungsleitung 11 befindet sich ein schaltbares Ventil 13, mittels welchen die Einrichtung 1 gesteuert beaufschlagt werden kann. Eine weitergeführte Zuführungsleitung 11 ist in mindestens zwei parallele Durchflussbereiche eingeteilt, welche letztlich wieder zusammengeführt sind und eine Beaufschlagungsleitung 12 für eine Düse (nicht dargestellt) bilden.From Fig. 1 there is schematically shown a control device 1 which receives high-pressure water H from a supply means, e.g. with a pressure of 420 MPa, can be fed. In a supply line 11 is a switchable valve 13, by means of which the device 1 can be applied controlled. A continued supply line 11 is divided into at least two parallel flow areas, which are ultimately brought together again and form an admission line 12 for a nozzle (not shown).

Bei einer Offenstellung eines Ventils 13 in der Zuführungsleitung 11 strömt Druckwasser in die parallelen Durchflussbereiche 2,3; einerseits in einen Hochdruckbereich 2 bis zu einem geschlossenen Ventil 21, andererseits in einen druckreduzierenden Bereich 3 durch ein Druckminderungsmittel 31 in eine Beaufschlagungsleitung 12 für eine Düse, in welcher mit vermindertem Druck von z.B. 40 bis 150 MPa ein Strahl für ein Anschießen von flächigem Material gebildet wird. Erfolgt nun ein Durchbruch eines Anschießstrahles durch die Materialwand und ein Durchtreten des Strahles durch das gebildete Loch, wird ein schaltbares Ventil 21 im Hochdruckbereich 2 offengestellt, wodurch Hochdruckwasser mit einem Druck von beispielsweise 420 MPa in der Beaufschlagungsleitung 12 zur Düse geführt wird und bei einer gezielten Verschiebung des flächigen Materials relativ zum Hochdruckschneidstrahl dieser schnitterzeugend wirkt. Durch den hohen Duck in der Beaufschlagungsleitung 12 erfolgen zwangsläufig ein Druckanstieg im druckreduzierenden Bereich 3 und eine Abnahme einer Strömung in diesem gegen null.With an open position of a valve 13 in the supply line 11, pressurized water flows into the parallel flow areas 2,3; on the one hand in a high-pressure region 2 to a closed valve 21, on the other hand in a pressure-reducing region 3 by a pressure reducing means 31 in a supply line 12 for a nozzle, in which formed at reduced pressure of, for example 40 to 150 MPa, a beam for an attachment of sheet material becomes. Now takes place a breakthrough of a Anschießstrahles through the material wall and a passage of the beam through the hole formed is a switchable valve 21 in the high-pressure region 2 is exposed, whereby high-pressure water at a pressure of, for example, 420 MPa in the charge line 12 to the nozzle is guided and this killer generating at a targeted displacement of the sheet material relative to the high-pressure cutting jet. Due to the high pressure in the admission line 12, an increase in pressure in the pressure-reducing region 3 and a decrease in the flow in the latter to zero take place inevitably.

Fig. 2 zeigt bei gleich gestaltetem Hochdruckbereich 2 einer Steuereinrichtung 1 einen druckreduzierenden Bereich 3 mit einem steuerbaren Ventil 32 und in Flussrichtung nachgeschaltet ein Druckminderungsmittel 31.FIG. 2 shows a pressure-reducing region 3 with a controllable valve 32 and downstream of a pressure-reducing means 31 in the case of a similarly designed high-pressure region 2 of a control device 1.

Mittels Steuergerätes 4 und über Verbindungsleitungen 41 sind die Ventile 21 und 32 verfahrensgemäß steuerbar, wobei das Steuergerät mit einem Lochdurchschlagsensor verbunden sein kann.By means of control unit 4 and via connecting lines 41, the valves 21 and 32 are controllable according to the method, wherein the control unit can be connected to a hole punch-through sensor.

In Fig. 3 ist eine erfindungsgemäße Steuereinrichtung 1 dargestellt, wobei im druckreduzierenden Bereich 3 in Flussrichtung ein Druckminderungsmittel 31 einem steuerbaren Ventil 32 vorgeschaltet ist.In Fig. 3, a control device 1 according to the invention is shown, wherein in the pressure-reducing region 3 in the flow direction, a pressure reducing means 31 is connected upstream of a controllable valve 32.

Claims (5)

Einrichtung zur Steuerung der Beaufschlagung des Werkstückes durch einen Wasserstrahl oder einen Wasserabrasivstrahl in einer dergleichen Schneidanlage, dadurch gekennzeichnet, dass die Steuereinrichtung (1) zwischen einem Hochdruckwasserbereitstellungsmittel (H), z.B. einer Hochdruckpumpe oder dergleichen, und einer Strahldüse (S) der Anlage positioniert ist, eine Zuführung (11) und mindestens zwei parallel geführte Durchflussbereiche (2,3) aufweist, die letztlich wieder in einer Beaufschlagungsleitung (12) der Düse zusammengeführt sind, wobei mindestens einer der Durchflussbereiche (2,3) als Hochdruckbereich (2) mit mindestens einem schaltbaren Ventil (21) ausgebildet ist und mindestens ein weiterer druckreduzierender Bereich (3) ein Druckminderungsmittel (31) aufweist.Device for controlling the pressurization of the workpiece by a jet of water or a water abrasive jet in a similar cutting device, characterized in that the control device (1) is positioned between a high pressure water supply means (H), eg a high pressure pump or the like, and a jet nozzle (S) of the plant , a feed (11) and at least two parallel flow areas (2,3), which are ultimately brought together again in an admission line (12) of the nozzle, wherein at least one of the flow areas (2,3) as a high pressure area (2) with at least a switchable valve (21) is formed and at least one further pressure-reducing region (3) comprises a pressure reducing means (31). Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass im druckreduzierenden Bereich (3) ein schaltbares Ventil (32) angeordnet ist, welches mit dem schaltbaren Ventil (21) im Hochdruckbereich steuerungstechnisch in Wirkverbindung steht.Device according to claim 1, characterized in that in the pressure-reducing region (3) a switchable valve (32) is arranged, which is in operative connection with the switchable valve (21) in the high-pressure region. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass in Flussrichtung im druckreduzierenden Bereich (3) das Druckminderungsmittel (31) vor dem schaltbaren Ventil (32) angeordnet ist.Device according to claim 2, characterized in that in the flow direction in the pressure-reducing region (3), the pressure reducing means (31) in front of the switchable valve (32) is arranged. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Druckminderungsmittel (31) als Drossel ausgebildet ist.Device according to one of claims 1 to 3, characterized in that the pressure reducing means (31) is designed as a throttle. Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zumindest das schaltbare Ventil (21) im Hochdruckbereich (2) durch mindestens einen Lochdurchschlagsensor (5) steuerbar ist.Device according to one of claims 1 to 4, characterized in that at least the switchable valve (21) in the high pressure region (2) by at least one hole penetration sensor (5) is controllable.
EP20070450011 2006-02-22 2007-01-26 Device for shearing equipment with a water jet or abrasive water jet Active EP1825958B1 (en)

Applications Claiming Priority (1)

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AT0012906U AT9123U1 (en) 2006-02-22 2006-02-22 EQUIPMENT FOR WATER JET OR ABRASIVE WATER JET CUTTING

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DE502007001601D1 (en) 2009-11-12
US20070207702A1 (en) 2007-09-06
AT9123U1 (en) 2007-05-15
US7938713B2 (en) 2011-05-10
ATE444140T1 (en) 2009-10-15
EP1825958B1 (en) 2009-09-30

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