EP0159977B1 - Dispositif de coupe à fluide sous pression - Google Patents

Dispositif de coupe à fluide sous pression Download PDF

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Publication number
EP0159977B1
EP0159977B1 EP85890097A EP85890097A EP0159977B1 EP 0159977 B1 EP0159977 B1 EP 0159977B1 EP 85890097 A EP85890097 A EP 85890097A EP 85890097 A EP85890097 A EP 85890097A EP 0159977 B1 EP0159977 B1 EP 0159977B1
Authority
EP
European Patent Office
Prior art keywords
jet
pressure
medium
outlet opening
fluid jet
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.)
Expired - Lifetime
Application number
EP85890097A
Other languages
German (de)
English (en)
Other versions
EP0159977A3 (en
EP0159977A2 (fr
Inventor
Franz Windisch
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.)
Boehler GmbH
Schoeller Bleckmann GmbH
Original Assignee
Boehler GmbH
Schoeller Bleckmann 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 Boehler GmbH, Schoeller Bleckmann GmbH filed Critical Boehler GmbH
Publication of EP0159977A2 publication Critical patent/EP0159977A2/fr
Publication of EP0159977A3 publication Critical patent/EP0159977A3/de
Application granted granted Critical
Publication of EP0159977B1 publication Critical patent/EP0159977B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • 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
    • Y10T83/364—By fluid blast and/or suction

Definitions

  • the invention relates to a liquid jet cutting device with a cutting head which can be supplied by means of a high pressure device via feeds with liquid medium at high pressure, with a housing and a jet outlet opening and at least one organ for regulating the supply of the liquid medium to the outlet opening.
  • Such cutting devices have been in use in various designs for cutting a wide variety of materials for a long time.
  • the aim is to automate the cutting process, e.g. program-controlled coordinate guidance of the nozzle can take place over a good arranged on a cutting table.
  • Such automatic devices are not only of interest for objects with a complicated contour, but are also of particular interest if, for example, a large number of similar elements, e.g. Smaller ring-shaped elements or the like are to be cut sequentially from a sheet of material.
  • the task was to create a facility that is as simple and safe as possible, in which the slightest changes in the cutting beam automatically result in a warning for the maintenance personnel and / or an interruption of the medium delivery to the cutting head.
  • the invention thus relates to a liquid jet cutting device of the type mentioned at the outset, which is characterized in that a gas space, preferably surrounded by a wall of a channel which is not touched by the medium jet, is arranged immediately downstream of the outlet opening and is penetrated by the medium jet, preferably via a pressure transmission line , a pressure sensor is connected to an encoder that can be set to a desired pressure threshold value, which in turn is connected to a warning device that can be actuated when the set pressure threshold value is reached or fallen below or exceeded, and / or actuating device for actuating the organ for regulating to block or switch off the supply of the medium to the beam outlet opening is operatively connected.
  • the gas space usually air space, for example a line, defined by a channel wall and penetrated by the medium jet, which in a simple embodiment, e.g. can be connected to a mercury U-tube manometer, e.g. in the leg with negative pressure, the poles of a circuit having a power supply are arranged, which is connected to an actuating member for a shut-off member for the medium. If the vacuum changes when the jet changes, the mercury rises higher in the thigh and when it comes into contact with the poles, current flows, which actuates the blocking element or a shutdown device of the high-pressure apparatus.
  • the pressure measurement sensor connected to the gas chamber close to the jet is arranged in the wall of the jet outlet channel itself.
  • Piezocrystals, membranes, strain gauges or the like may be mentioned as examples.
  • the advantage of such an embodiment is that practically only flexible electrical lines leave the cutting head which practically do not interfere.
  • the gas space penetrated by the medium jet is preferably connected via an opening in the wall of the channel and via a pressure transmission line to a pressure measuring cell with a membrane-controlled switch.
  • the measuring tool is a membrane, the reaction of which to a specific setpoint can be set. If the setpoint is reached when the pressure changes, for example by falling below or exceeding it, a microswitch connected to the membrane is opened or closed and thus a circuit for a control element of a shut-off element in the medium supply system or a shut-off element of the high-pressure apparatus, the switching point with a Adjusting screw on the sensor is changeable. In this way, commercially available pressure switches can be set to the respective outlet opening cross-section, medium pressure and the medium composition used in each case.
  • the cutting head needs as little space as possible and a commercially available pressure switch is still used, it is convenient to place the transfer line inside the head, e.g. the nozzle holder is angled, i.e. as is preferred in the simplest case, at first approximately perpendicular to the beam direction, and then still inside the head, housing or the like, essentially parallel to it. This can be an advantage e.g. then be when the outlet end of the cutting head has its own drive device for exact traversing of contours.
  • liquid medium is brought to a pressure of up to several kbar and via line 87, 71 with flow control element 7, for example by means of a not shown, e.g. program-controlled servomotors supplied with cutting contours that can be guided by the cutting contour, the area of which has the outlet opening for the bundled cutting beam 21 is shown enlarged in the figure.
  • the liquid medium 2 which is under high pressure, reaches the interior 11 of a housing 10, which is closed at the bottom by means of a coupling 12 screwed to the housing 10 by means of a union nut and a nozzle block 14 held by it and having the jet outlet opening 13.
  • a nozzle-coaxial jet discharge channel 15 is arranged in the holder 12, with the wall 151 of which the cutting jet 21 pressed through the opening 13 does not come into contact and leaves an annular gas space 18 free.
  • a transfer line 16 branches off from the channel 15 from the opening 152, preferably approximately at a right angle. This line 16 then runs outwards through a sleeve 17 and further via a preferably flexible guide, e.g. through a pressure-resistant hose 19 and opens into a vacuum sensor 3 with membrane 31 and pressure threshold value adjustment screw 32.
  • the membrane 31 of sensor 3 is connected to a switch 4 as a transmitter. When the threshold is reached, e.g.
  • an actuator 6, e.g. Actuator supplying, a current source 51 circuit 5 current flow is switched on and thus controls the actuator 6 for actuating the shut-off element 7, which e.g. can be a three-way valve, so that the pressure medium can then be circulated via an interrupted return line 78 until the nozzle or the like has been replaced.
  • the broken line indicates in the figure how line 5 'is led to a switch 81 of the high-pressure apparatus, by means of which the switch itself is switched off to interrupt the cutting beam in the event of its change, and furthermore an angular guidance of the transfer line with a branch parallel to the beam 16 'indicated in the holder 12 of the cutting head 1, which can simplify manipulation.

Landscapes

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

Claims (5)

1. Dispositif de coupe à fluide sous pression à tête de coupe (1) pouvant, à l'aide d'un dispositif à haute pression, recevoir, via des ouvertures d'alimentation, un fluide liquide (2) à haute pression, avec boîtier (10) et orifice de sortie du jet (13) et au moins un organe de réglage de l'amenée du fluide liquide (2) vers l'orifice de sortie (13), caractérisé en ce que, par une chambre à gaz (18) dans laquelle pénètre le jet de fluide (21), entourée d'une paroi (151) d'un canal (15) avec laquelle le jet de fluide (21) n'entre, de préférence, pas en contact, de préférence disposée immédiatement en aval de l'orifice de sortie (13), de préférence via un circuit de transmission de pression (16), un détecteur de pression (3) est relié à un capteur (4), réglable à une valeur de seuil de pression désirée, qui, à son tour, est relié à un dispositif d'avertissement pouvant être déclenché lorsque la pression atteint ou descend au-dessous ou dépasse la valeur de seuil de pression et/ou à un dispositif de réglage (6) pour le déclenchement de l'organe (7, 81) de réglage, de préférence d'interruption ou d'arrêt de l'amenée du fluide (2) vers l'orifice de sortie du jet (13).
2. Dispositif de coupe à fluide sous pression suivant la revendication 1, caractérisé en ce que, à l'endroit de la paroi (151) du canal (15) disposé en aval de l'orifice de sortie (13), il est disposé un détecteur de pression.
3. Dispositif de coupe à fluide sous pression suivant la revendication 1, caractérisé en ce que, dans la paroi (151) du canal (15), il est disposé un orifice (152) relié à un détecteur de pression (3) par une conduite (16, 17, 19) s'étendant dans la tête de coupe (1), transversalement, de préférence sensiblement perpendiculairement, à la direction du jet de fluide.
4. Dispositif de coupe à fluide sous pression suivant la revendication 1 ou 3, caractérisé en ce que la conduite de transfert de pression (16) est disposée, dans la tête, angulairement, avec une branche (16') sensiblement parallèle à la direction du jet.
5. Dispositif de coupe à fluide sous pression suivant l'une des revendications 1 à 4, caractérisé en ce que la chambre à gaz, dans laquelle pénètre le jet de fluide (21), est, de préférence, reliée, au- travers d'un orifice (152) dans la paroi (151) du canal (15) et par une conduite de transfert de pression (16, 17, 19), à une boîte de mesure de pression (3) à interrupteur (4) commandé par membrane.
EP85890097A 1984-04-25 1985-04-18 Dispositif de coupe à fluide sous pression Expired - Lifetime EP0159977B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1367/84 1984-04-25
AT0136784A AT380422B (de) 1984-04-25 1984-04-25 Fluessigkeitsstrahlschneideinrichtung

Publications (3)

Publication Number Publication Date
EP0159977A2 EP0159977A2 (fr) 1985-10-30
EP0159977A3 EP0159977A3 (en) 1988-06-01
EP0159977B1 true EP0159977B1 (fr) 1990-06-27

Family

ID=3512345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890097A Expired - Lifetime EP0159977B1 (fr) 1984-04-25 1985-04-18 Dispositif de coupe à fluide sous pression

Country Status (5)

Country Link
US (1) US4594924A (fr)
EP (1) EP0159977B1 (fr)
JP (1) JPS60228100A (fr)
AT (1) AT380422B (fr)
DE (1) DE3578396D1 (fr)

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US5198144A (en) * 1988-04-01 1993-03-30 Kao Corporation Bathing preparation
US4934111A (en) * 1989-02-09 1990-06-19 Flow Research, Inc. Apparatus for piercing brittle materials with high velocity abrasive-laden waterjets
US5222332A (en) * 1991-04-10 1993-06-29 Mains Jr Gilbert L Method for material removal
US5599223A (en) * 1991-04-10 1997-02-04 Mains Jr.; Gilbert L. Method for material removal
DE69209436T2 (de) * 1991-05-17 1996-08-14 Ingersoll Rand Co Unversehrtheitsfühler für strahldüsen
US5232155A (en) * 1991-05-17 1993-08-03 Ingersoll-Rand Company Integrity sensor for fluid jet nozzle
FR2687090B1 (fr) * 1992-02-12 1994-07-08 Cdpsi Sarl Procede et machine de decoupe de pain par jets d'eau moyenne pression.
FR2699852B1 (fr) * 1992-12-29 1995-03-17 Gaz De France Procédé et dispositif d'usinage à jet de fluide haute pression asservi.
US5339715A (en) * 1993-09-02 1994-08-23 Davidson Textron Inc. Programmable pressure control system
US6006637A (en) * 1995-04-18 1999-12-28 Kimberly-Clark Worldwide, Inc. Servo driven watercutter
US6155245A (en) * 1999-04-26 2000-12-05 Zanzuri; Clement Fluid jet cutting system and method
US6676039B2 (en) * 2000-02-07 2004-01-13 Framatome Anp, Inc. Pressurized abrasive feed and metering system for waterjet cutting systems
US6220529B1 (en) 2000-02-10 2001-04-24 Jet Edge Division Tc/American Monorail, Inc. Dual pressure valve arrangement for waterjet cutting system
US6932285B1 (en) 2000-06-16 2005-08-23 Omax Corporation Orifice body with mixing chamber for abrasive water jet cutting
US8444060B2 (en) * 2007-07-17 2013-05-21 Mi Yan Fuel injector with deterioration detection
WO2010109026A1 (fr) * 2009-03-23 2010-09-30 Emilio Mateu Sentamans Dispositif anti-collision pour tête de découpe par hydrojet
ES2420030B1 (es) * 2012-02-15 2013-12-19 Mirrioter, S.L. Boquilla de chorro de agua con maniobra neumática
US8904912B2 (en) * 2012-08-16 2014-12-09 Omax Corporation Control valves for waterjet systems and related devices, systems, and methods
US9095955B2 (en) 2012-08-16 2015-08-04 Omax Corporation Control valves for waterjet systems and related devices, systems and methods
AT515943B1 (de) * 2014-10-20 2016-01-15 Perndorfer Andreas Verfahren zum Betreiben einer Anlage zum Wasserstrahlschneiden sowie Anlage zum Wasserstrahlschneiden
DE102014225247A1 (de) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Verfahren zum Flüssigkeitsstrahlschneiden
US10252400B1 (en) 2015-09-29 2019-04-09 Flow International Corporation Methods for improving jet cutting performance via force sensing
CN107243935B (zh) * 2017-07-31 2018-12-07 重庆良能机械有限公司 一种棕垫切割装置
BE1025457B1 (nl) * 2017-08-08 2019-03-11 D.E.C.O. Nv Waterstraalinrichting en methode voor het detecteren van een insnijding
US11554461B1 (en) 2018-02-13 2023-01-17 Omax Corporation Articulating apparatus of a waterjet system and related technology
US12051316B2 (en) 2019-12-18 2024-07-30 Hypertherm, Inc. Liquid jet cutting head sensor systems and methods
EP4127527A1 (fr) 2020-03-24 2023-02-08 Hypertherm, Inc. Joint haute pression pour système de coupe à jet de liquide
US11719354B2 (en) 2020-03-26 2023-08-08 Hypertherm, Inc. Freely clocking check valve
KR102993730B1 (ko) 2020-03-30 2026-07-21 하이퍼썸, 인크. 다기능 접속 종방향 단부들을 갖는 액체 제트 펌프를 위한 실린더
CN114178992B (zh) * 2021-12-22 2022-12-06 安徽理工大学 一种煤矿用可伸缩冷切割机的保护装置及使用方法

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Also Published As

Publication number Publication date
ATA136784A (de) 1985-10-15
EP0159977A3 (en) 1988-06-01
DE3578396D1 (de) 1990-08-02
US4594924A (en) 1986-06-17
AT380422B (de) 1986-05-26
JPS60228100A (ja) 1985-11-13
EP0159977A2 (fr) 1985-10-30

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