EP0074496A1 - Dispositif de vanne, en particulier pour machine à moulage sous pression - Google Patents

Dispositif de vanne, en particulier pour machine à moulage sous pression Download PDF

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Publication number
EP0074496A1
EP0074496A1 EP82107315A EP82107315A EP0074496A1 EP 0074496 A1 EP0074496 A1 EP 0074496A1 EP 82107315 A EP82107315 A EP 82107315A EP 82107315 A EP82107315 A EP 82107315A EP 0074496 A1 EP0074496 A1 EP 0074496A1
Authority
EP
European Patent Office
Prior art keywords
valve
cone
thread
valve device
pressure
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.)
Granted
Application number
EP82107315A
Other languages
German (de)
English (en)
Other versions
EP0074496B1 (fr
Inventor
Hans Gebhard Krines
Hans-Jürgen Müller
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.)
Vickers Systems GmbH
Original Assignee
Vickers Systems GmbH
Sperry Vickers Zweigniederlassung Der Sperry 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 Vickers Systems GmbH, Sperry Vickers Zweigniederlassung Der Sperry GmbH filed Critical Vickers Systems GmbH
Publication of EP0074496A1 publication Critical patent/EP0074496A1/fr
Application granted granted Critical
Publication of EP0074496B1 publication Critical patent/EP0074496B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment

Definitions

  • the invention relates to a valve device of the type mentioned in the preamble of the main claim.
  • a valve device for example for heating, air conditioning or the like.
  • a valve plunger performing a lifting movement is known, which can be actuated by an actuator attached to the valve, the actuator being a commercially available motor and between the Motor drive shaft and the valve tappet is arranged a gear converting the rotary movement into a lifting movement.
  • the opening movement of a locking piston is adjustable by a handwheel that acts on a longitudinal spindle. When the handwheel is turned, the spindle is adjusted longitudinally and thus the opening travel of the valve cone is adjusted.
  • This DE-OS 20 58 112 and DE-GM 7 507 129 valve devices are thus known at which the valve cone is adjustable by a gear engaging in a thread of the valve housing or a part thereof.
  • the invention has for its object to provide a fast-switching valve device in which the adjustable opening limitation of the valve cone can be carried out with the help of small manual or motor forces with structurally simple means in a space-saving device housing in direct drive.
  • the invention provides the features of the characterizing part of the main claim. -
  • the features of the subclaims serve the further development and improvement of the features of the main claim.
  • the advantage of the device according to the invention is that the threaded bushing, which limits the opening travel of the valve cone, e.g. B. can be done by an inexpensive electric drive in the form of a preferably remote-controlled stepper motor with low torque in direct drive or when manually operated this also only has to apply a low torque.
  • the device according to the invention is based on the idea of hydraulic pressure equalization between the two effective end faces of the threaded bushing, so that the motor or manual driving force only the mechanical friction and spring forces can be overcome.
  • the entire valve mechanism of the device according to the invention is designed as a cylindrical cartridge and forms an interchangeable structural unit with the individual valve parts described below.
  • the bore 2 of the housing is z. B. with a feed line, not shown, of a pressure accumulator of a die casting machine in connection, while the axial bore 3 is connected to the cylinder space.
  • the holes 2 and 3 can also serve another purpose.
  • the annular valve seat 4 is formed by the inner end of the bore 3; the screwed-in head surface 5 of the valve cone 6 bears against it when the valve is closed.
  • the arrangement and design of the valve seat 4 and the screwed-in head surface 5 is such that, when the valve is closed, the pressure in the line 2 and the annular chamber 2a can act on the projected diameter surface of the section 5a of the head surface 5.
  • the housing 1 has a further bore 7, which can also be closed with respect to the bore 3 by the valve cone 6.
  • This has a hollow cylindrical shape and is guided with its outer wall on a section 8 of the longitudinal bore 9 of the housing.
  • the rear end of the valve cone 6 has a ring-like outward reinforcement 10, just as the bore 9 has a corresponding extension 11.
  • an annular shoulder 12 on the housing and an annular shoulder 13 on the one hand Valve cone 6 is formed, between which a corresponding annular space is formed in the extension 11 of the bore 9, which is kept depressurized via the bore 14.
  • the rear reinforcement 10 increases the effective rear end face compared to the front effective end face of the valve cone 6.
  • the inner wall of the hollow valve cone 6 also forms a shoulder 15 which forms the abutment of a spring 16 described in more detail below.
  • the enlargement 11 of the bore 9 merges into a valve chamber 17, into which a bore 18 opens, which is connected via a first check valve 19 and a second opposing check valve 20 to a bore 21, which in turn via the bores 22, 23 with another Chamber 24 communicates.
  • the head 25 of a threaded bushing 26 is arranged so that it can move and be sealed.
  • Its end face 27 (FIG. 2), like the rear end face 28 of the valve cone 6, is under the effect of the pressure in the chamber 17 and the bore 18.
  • the threaded bushing 26 engages with the external thread in the internal thread 29 of the valve housing 1.
  • the rear end face 30 of the threaded bushing 26 (FIG. 2) is under the effect of the pressure in the chamber 31, which also prevails in the bore 21 and also through the bores 22, 23 in the chamber 24, which are from the shoulders 32, 33 of the threaded bushing is axially limited.
  • the second end of the axial pressure spring 16 bears against the end face 27 of the threaded bushing, which can optionally also be equipped with an axial pressure bearing to reduce the rotational friction forces.
  • the shaft 34 of the adjustment drive for the threaded bushing 26 provided with the general reference number 35 is mounted.
  • the shaft 34 is connected via a coupling part 36 to the drive shaft 37 of the adjusting drive arranged in the housing 38, which, for. B. can be a low torque stepper motor.
  • the front end of the shaft 34 extends in a sealed manner into the interior 39 of the valve cone 6 and is enclosed by the spring 16.
  • the threaded bushing 26 which is non-rotatably connected to the threaded shaft.
  • the threaded bushing 26 can be connected to the shaft 34 via several axial rows 40 of balls.
  • the parts 26 and 34 can be connected in a rotationally fixed manner via a rotary wedge 41, which engages in a corresponding groove 42 of the threaded bushing 26, while according to FIG. 44 can be accomplished.
  • the interior 39 of the valve cone 6 as well as the interior of the shaft 34 is kept depressurized via a bore 45.
  • the leadership of the valve cone 6 is carried out except by contacting the Wall of the bore 9 and the extension 11 through an axial rod 46 which is guided within the shaft 34.
  • this axial rod 46 is passed through the shaft 37 of the adjusting drive 35 and ends at the level of a displacement transducer 47, through which a position-controlled regulation of the valve cone 6 of the valve control described below can take place.
  • the check valve 19 acts as a differential pressure valve between the chamber 17 in front (ie in FIGS. 1 and 2 on the left) of the threaded sleeve 26 and the chamber 31 behind (ie on the right) of the threaded sleeve 26.
  • pressure is applied in the bore 21, it is in the chamber 31 this pressure, while in the chamber 17 there is a lower pressure caused by the check valve 19, as a result of which the threaded bushing 26 is pressed to the left in FIGS.
  • the enlarged head 25 of the sleeve carries two seals 25a and 25b, which can be designed as a ring or gap seal.
  • valve 1 provides a check valve 50 connected to the bore 7 as a control pressure safety valve so that the valve plug 6 remains closed even when the main pressure suddenly escapes through the bore 2.
  • An electrically operated, leak-free directional seat valve 51 connects to the valve 50 as a pilot stage for the sudden opening of the valve cone 6.
  • Designated at 52 is a flow control valve for the limited supply of control oil for the slow opening and closing movement of the plug valve 6, which is connected to a check valve 53 serves to separate the control oil flow between the directional seat valve 51 and the main control valve 54.
  • the main control valve 54 When the main control valve 54 is actuated via the pilot valve 51, the valve plug 6 can open suddenly.
  • an electrically operated leakage-free directional seat valve 55 is connected, which is preceded by a throttle valve 56 for manual preselection of the slow opening movement of the valve plug 6, which is connected to the bore 21 of the housing 1.
  • the quick opening of the valve cone 6 can take place at any time during the slow opening process.
  • the directional seat valve 51 is switched on and the previously closed head Control valve 54 opened, the control current escapes from the chamber 17 via the check valve 20, the bore 21, the line 61 and the open main control valve 54 and the line 62 with the larger outflow cross section than that of the throttle valve 56th
  • the throttle valve 56 and directional valve 55 are replaced here by an electrically, proportionally adjustable design with position control. This makes it possible to regulate the slow opening and closing of the valve cone 6 as desired, i. H. to achieve a target-actual value comparison of the valve cone 6 via the displacement sensor 47.
  • the main control valve 54 is opened quickly in the manner described above.
  • the electrically controllable directional seated valves 51 and 55 shown in FIG. 1 can optionally also be designed with pneumatic or hydraulic control.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
EP82107315A 1981-08-20 1982-08-12 Dispositif de vanne, en particulier pour machine à moulage sous pression Expired EP0074496B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3132909 1981-08-20
DE19813132909 DE3132909A1 (de) 1981-08-20 1981-08-20 "ventilvorrichtung, insbesondere fuer druckgiessmaschinen

Publications (2)

Publication Number Publication Date
EP0074496A1 true EP0074496A1 (fr) 1983-03-23
EP0074496B1 EP0074496B1 (fr) 1985-03-13

Family

ID=6139710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107315A Expired EP0074496B1 (fr) 1981-08-20 1982-08-12 Dispositif de vanne, en particulier pour machine à moulage sous pression

Country Status (4)

Country Link
EP (1) EP0074496B1 (fr)
JP (1) JPS58103950A (fr)
CA (1) CA1192375A (fr)
DE (2) DE3132909A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184815A (en) * 1985-12-10 1987-07-01 Vaillant Joh Gmbh & Co Water-actuated controller
DE3819128C1 (fr) * 1988-06-04 1989-12-14 Conducta Gesellschaft Fuer Mess- Und Regeltechnik Mbh & Co, 7016 Gerlingen, De
WO1993005303A1 (fr) * 1991-09-03 1993-03-18 Caterpillar Inc. Soupape a champignon a amplification d'ecoulement et a compensation de pression

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159375A (en) * 1962-05-31 1964-12-01 Greenlee Bros & Co Flow control valve
FR2265481A1 (en) * 1974-04-02 1975-10-24 Italpresse Spa Hydraulic oil control valve circuit - for high pressure oil reservoir on pressure die casting machines
US4011902A (en) * 1973-10-08 1977-03-15 Gebrueder Buehler Ag Device for pressure casting
GB2002880A (en) * 1977-08-17 1979-02-28 Idra Pressen Gmbh Valve for controlling pressure medium
FR2444828A1 (fr) * 1978-12-18 1980-07-18 Heurtey Metallurgie Perfectionnements apportes aux verins

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7507129U (de) * 1975-08-28 Eglinski Geraetetechnik Kg Absperrgerät für hydraulische Systeme. 700903
DE2058112C3 (de) * 1970-11-26 1979-10-31 Idra - Pressen Gmbh, 7000 Stuttgart Verfahren und Vorrichtung zur Steuerung der Zuschaltung des Multiplikators zum Preßkolben an Multiplikator-Druckgießmaschinen
DE7604336U1 (de) * 1976-02-14 1976-07-15 Varsek, Zdenko, Dipl.-Ing., 7500 Karlsruhe Ventilvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159375A (en) * 1962-05-31 1964-12-01 Greenlee Bros & Co Flow control valve
US4011902A (en) * 1973-10-08 1977-03-15 Gebrueder Buehler Ag Device for pressure casting
FR2265481A1 (en) * 1974-04-02 1975-10-24 Italpresse Spa Hydraulic oil control valve circuit - for high pressure oil reservoir on pressure die casting machines
GB2002880A (en) * 1977-08-17 1979-02-28 Idra Pressen Gmbh Valve for controlling pressure medium
FR2444828A1 (fr) * 1978-12-18 1980-07-18 Heurtey Metallurgie Perfectionnements apportes aux verins

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184815A (en) * 1985-12-10 1987-07-01 Vaillant Joh Gmbh & Co Water-actuated controller
GB2184815B (en) * 1985-12-10 1989-10-25 Vaillant Joh Gmbh & Co Water-actuated controller
DE3819128C1 (fr) * 1988-06-04 1989-12-14 Conducta Gesellschaft Fuer Mess- Und Regeltechnik Mbh & Co, 7016 Gerlingen, De
WO1993005303A1 (fr) * 1991-09-03 1993-03-18 Caterpillar Inc. Soupape a champignon a amplification d'ecoulement et a compensation de pression

Also Published As

Publication number Publication date
DE3262555D1 (en) 1985-04-18
JPS58103950A (ja) 1983-06-21
EP0074496B1 (fr) 1985-03-13
DE3132909A1 (de) 1983-03-03
CA1192375A (fr) 1985-08-27

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