EP1295655A1 - Dispositif de soupape pour l'évacuation des moules de fonderrie - Google Patents

Dispositif de soupape pour l'évacuation des moules de fonderrie Download PDF

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Publication number
EP1295655A1
EP1295655A1 EP02405667A EP02405667A EP1295655A1 EP 1295655 A1 EP1295655 A1 EP 1295655A1 EP 02405667 A EP02405667 A EP 02405667A EP 02405667 A EP02405667 A EP 02405667A EP 1295655 A1 EP1295655 A1 EP 1295655A1
Authority
EP
European Patent Office
Prior art keywords
valve
closure member
vent
valve device
vent valve
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
EP02405667A
Other languages
German (de)
English (en)
Other versions
EP1295655B1 (fr
Inventor
Andreas Wüthrich
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.)
Fondarex SA
Original Assignee
Fondarex SA
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Filing date
Publication date
Application filed by Fondarex SA filed Critical Fondarex SA
Publication of EP1295655A1 publication Critical patent/EP1295655A1/fr
Application granted granted Critical
Publication of EP1295655B1 publication Critical patent/EP1295655B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B22D17/14—Machines with evacuated die cavity
    • B22D17/145—Venting means therefor

Definitions

  • the invention relates to a vent valve device for molds according to the Preamble of claim 1.
  • the mold or the cavity of the The mold is vented during the pouring process. Not only the in Existing air escapes from the cavities of the casting machine and the casting mold can, but it must also be ensured that the out escaping the liquid casting compound gases can also escape.
  • vent valve the valve device should be closed as late as possible, so that the cavity is vented to full filling if possible, but on the other hand Liquid pouring material should be prevented from entering the vent valve penetrates.
  • valve devices for die casting molds, both types a vent valve with a reciprocating closure member for closing the Have ventilation duct. Meanwhile, in the first type, the closure organ is operated externally, the closure member is in the second type with a force transducer in operative connection, which is directly from that of the cavity into the ventilation channel advancing casting material, using its kinetic energy, is operated.
  • Externally operated valve devices are understood to mean that the valve piston not from the casting material penetrating from the cavity into the ventilation duct, but is operated by an external energy source, the latter mostly is designed as a pneumatic or hydraulic system.
  • Point of time For triggering the closing process these valve devices can be used, for example determined by means of a sensor monitoring the fill level of the cavity become.
  • a difficulty with such valve devices is that the Actual closing process takes a relatively long time, because that is the closing process initiating signal (electrical impulse) in a mechanical movement, for example into actuating a servo valve. moreover must close the vent valve or one with the valve piston in There is a certain system pressure when the actuator is in active connection, so that the vent valve pneumatically or hydraulically within the required Period can be closed.
  • valve devices With the second type of valve devices, however, can be very fast and implement reliable valve devices. To the on the force transducer for the To be able to build up the necessary back pressure, this shows from the cavity ventilation duct leading to the force transducer changes in direction and cross-section on.
  • the ventilation channel between the force transducer and the actual valve body of the vent valve a certain minimum distance have and be angled so that the vent valve is securely closed before the liquid casting material has reached the vent valve.
  • the vent valve is on usually connected to a vacuum pump.
  • EP 0 612 573 describes a generic valve device for venting Die casting molds known, which have a ventilation channel, one in the ventilation channel arranged vent valve and an actuator for Closing the vent valve is provided.
  • the actuator has one Force transducer on, which from the cavity into the ventilation channel penetrating casting material can be acted upon and with the movable closure part of the vent valve is in mechanical operative connection. It is the force transducer is designed as a thrust member, its working stroke on one Fraction of that to be covered by the movable closure part of the vent valve Closing path is limited. Furthermore, the closure part of the vent valve Movable over the working stroke of the load cell in freewheel mode and the actuator has a power transmission member for the transmission of the shock pulse from the force transducer to the movable closure part of the Vent valve on.
  • the object of the invention is based on the known prior art therein, a vent valve device mentioned in the preamble of claim 1 Art to improve such that it can be used universally by the closure member process-independent, i.e. regardless of the operating parameters of the Casting device and the casting material, very quickly and reliably from the Open- can be moved into the closed position.
  • the closure member can be operated externally be closed very quickly, especially the time to pick up the frictional connection compared to conventional locking of the Closing member is very short, especially since the closing member is already in the closing direction can be biased or is biased.
  • valve device Preferred developments of the valve device are in the dependent claims 2 to 16 circumscribed.
  • vent valve device is a vent valve with a hydraulically or pneumatically actuated chamber provided, which with a bulging in the direction of the closure member, the Closure member is frictionally fixable chamber wall is provided.
  • the chamber wall is within the elastic limit of the material (steel) deflectable, that after the reduction of the prevailing in the chamber Overpressure automatically in the starting position releasing the closure member back arched.
  • bleed valves do not first build up pressure and / or a closure member from a locking be brought into an unlocked position so that the closure member can be moved from the open to the closed position, but it has to only the pressure in the chamber has to be reduced to such an extent that the chamber wall bulges back so that the prestressed closure member is released and can suddenly move from the open to the closed position.
  • This Pressure can be reduced, for example, by opening a relief valve.
  • the entire closing time from recognizing the mold filling to complete Closing the closure member can be significantly shortened in this way become.
  • FIG. 1 shows the vent valve 1 in a longitudinal section the structure of the vent valve explained in more detail.
  • the vent valve 1 has round valve housing 2, which with a central valve channel 3 for receiving and guidance of a closure member 20 is provided.
  • On the front side of the valve housing 2 is one which acts as an extension of a ventilation duct 7 Vent chamber 6 arranged, which via a valve seat 9 with the valve channel 3 is connected.
  • the venting chamber 6 is between one to be vented Cavity leading first ventilation duct section 7a and one on the top arranged from the valve housing 2 leading second ventilation duct section 7b.
  • This second ventilation duct section 7b opens radially into a front of the valve duct 3 arranged and adjacent to the valve seat 9 valve chamber 4.
  • Hydraulic chamber 13 let into the valve housing 2.
  • This hydraulic chamber 13 is with a relatively thin, adjacent to the valve channel 3 Chamber wall 14 provided, which under the action of one in the hydraulic chamber 13 generated overpressure in the direction of the valve channel 3 can be arched out elastically is, as shown in FIG. 2, enlarged and in favor of good visibility strongly exaggerated representation is evident.
  • a gaseous one instead of a liquid one Provide medium for loading the hydraulic chamber.
  • valve channel 3 this can be moved between an open and a closed position
  • Closure member 20 included the closure member 20 in the present Example is shown in the open position.
  • the closure member 20 has one Valve stem 21 with an end arranged thereon and designed as a cone valve Valve head 22 on. With this valve head 22, the ventilation channel 7 can Valve seat 9 can be closed if necessary, so that no casting material from first ventilation duct section 7a into the valve duct 3 and the second ventilation duct section 7b can penetrate.
  • On the valve head 22 opposite Side is a valve plate 23 by means of a screw 27 with the valve stem 21 connected.
  • the valve plate 23 has a circumferential and serving as a stop Bund 25 and an elastically deflectable plate middle part 24.
  • valve plate 23 is accommodated in the pneumatic chamber 10, the valve disk 23, and thus also the closure member 20, pneumatically both to the right in the open position shown as can also be moved to the left into the closed position.
  • To two channels 28, 29 are provided, which are in front of and behind the valve plate 23 open into the pneumatic chamber 10.
  • Fig. 3 shows a cross section through the vent valve along the line A-A in Fig. 1.
  • both the valve channel 3 as well as the valve stem 21 a polygonal cross section.
  • a polygonal design of the valve channel 3 favors also a clamping, frictional fixation of the closure member 20.
  • the vent valve device preferably has one in the first vent duct section 7a arranged sensor 30, by means of which the in the Venting channel penetrating casting material can be detected.
  • a control and monitoring unit 32 is provided, the hydraulic unit 33 and comprises a pneumatic unit 34.
  • the hydraulic unit 33 is over a flow 36 and a return 37 connected to the hydraulic chamber 13.
  • a relief valve arrangement 38 is provided, which i.a. one arranged in the return 37 Relief valve 39, by means of which a rapid breakdown of the in Hydraulic chamber 13 prevailing excess pressure can be introduced.
  • This relief valve 39 i.e. the opening takes place by means of the sensor signal, what through the line leading from the sensor 30 to the relief valve 39 40 is indicated.
  • a third line 43 can measure the negative pressure prevailing in the ventilation duct become.
  • an in-house pneumatic source is used Pressure connection, whereby of course a separate pressure source is also provided can.
  • the valve plate 23 helps the kinetic energy of the closure member 20 in the sense of a resilient end stop by first the collar 25 of the valve plate 23 serving as a stop abuts the cover 11 and the kinetic energy is intercepted via the elastic plate middle part 24.
  • the valve plate 23 is made of an elastic material with a high internal damping manufactured, the elastic plate middle part 24 is designed such that this is only deflected within the elastic limit of the material.
  • Composite fiber materials are particularly suitable for the valve plate 23 because these are light and their properties can be influenced in a targeted manner by for example, they are specifically provided with high internal damping.
  • valve plate closure element The Arrangement of the valve plate closure element is designed and dimensioned such that the valve head 22 has not yet applied sealingly to the valve seat 9 when the collar 25 the valve plate 23 comes to rest on the cover 11 of the pneumatic chamber 10.
  • the kinetic energy transmitted to the closure member 20 during the closing movement is therefore intercepted in a controlled manner by the valve plate 23.
  • the valve plate 23 by the inherent in the closure member 20 kinetic Energy is deflected elastically until the valve head 22 seals on valve seat 9.
  • This deflected state of the valve plate 23, in which the Valve seat 9 is closed by the valve head 22, remains as long as a minimum Maintain excess pressure, for example 5 bar, in the pneumatic chamber 10 becomes.
  • a spring instead of pneumatic means for prestressing the closure member 20 it could also be a good idea to pretension this with a spring.
  • a hydraulically deflectable chamber wall 14 for example piezoelectric crystals can also be used, which the closure member 20 fix frictionally under the influence of an applied voltage.
  • a vent valve device can also be provided, which includes more than one vent valve.
  • a poppet valve instead of a poppet valve
  • a cylindrical or flat valve can also be used.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Valve Housings (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Prostheses (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Pens And Brushes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Lift Valve (AREA)
  • Casting Devices For Molds (AREA)
EP02405667A 2001-09-21 2002-07-31 Dispositif de soupape pour l'évacuation des moules de fonderrie Expired - Lifetime EP1295655B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH17502001 2001-09-21
CH175001 2001-09-21

Publications (2)

Publication Number Publication Date
EP1295655A1 true EP1295655A1 (fr) 2003-03-26
EP1295655B1 EP1295655B1 (fr) 2006-10-25

Family

ID=4566128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405667A Expired - Lifetime EP1295655B1 (fr) 2001-09-21 2002-07-31 Dispositif de soupape pour l'évacuation des moules de fonderrie

Country Status (18)

Country Link
US (1) US6823930B2 (fr)
EP (1) EP1295655B1 (fr)
JP (1) JP4256647B2 (fr)
KR (1) KR20030025799A (fr)
CN (1) CN1409036A (fr)
AT (1) ATE343443T1 (fr)
BR (1) BR0203816A (fr)
CA (1) CA2398535A1 (fr)
DE (1) DE50208528D1 (fr)
HU (1) HUP0202569A2 (fr)
IL (1) IL151266A (fr)
MX (1) MXPA02009193A (fr)
NO (1) NO20024535L (fr)
PL (1) PL356118A1 (fr)
RU (1) RU2002125441A (fr)
SG (1) SG113433A1 (fr)
TW (1) TW539818B (fr)
ZA (1) ZA200206480B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516687A1 (fr) * 2003-08-25 2005-03-23 Fondarex S.A. Machine à coulée sous pression sous vide ou machine de moulage par injection sous vide
WO2007084087A2 (fr) * 2006-01-17 2007-07-26 Continental Matador Rubber, S.R.O. Soupape d’event pour orifice d’event d’un moule de vulcanisation utilisé pour la fabrication de pneumatiques de vehicule
CH700743A1 (de) * 2009-04-06 2010-10-15 Fondarex Sa Entlüftungseinrichtung für Giessvorrichtungen.
EP2427678A1 (fr) * 2009-05-06 2012-03-14 Dürr Systems GmbH Soupape à fluide, en particulier soupape de retour pour une installation de mise en peinture
CN105465457A (zh) * 2015-12-30 2016-04-06 广州市型腔模具制造有限公司 一种真空压铸***

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI296564B (en) * 2005-07-29 2008-05-11 Delta Electronics Inc Gas exhausting and entering structure
CH705077B1 (fr) * 2011-06-09 2016-01-29 V D S Vacuum Diecasting Service S A Dispositif de vanne pour l'évacuation d'air d'un moule.
US10579664B2 (en) * 2013-09-06 2020-03-03 Realnetworks, Inc. Device-centric media prioritization systems and methods
CH710347B1 (de) * 2014-11-07 2018-05-31 Fondarex Sa Ventileinrichtung zum Entlüften von Druckgiessformen.
JP6576862B2 (ja) * 2016-03-16 2019-09-18 東芝メモリ株式会社 トランスファ成型装置
CN106003613B (zh) * 2016-07-01 2018-01-30 何宏雷 一种注塑机排气总成
DE102016221678B4 (de) * 2016-11-04 2020-07-16 Magna BDW technologies GmbH Vorrichtung zur Herstellung von Druckgussteilen
WO2018082939A2 (fr) * 2016-11-04 2018-05-11 Magna BDW technologies GmbH Dispositif, commande et module de filtre permettant de produire des pièces moulées sous pression, ainsi que procédé associé
AU2021200566B2 (en) * 2020-03-20 2022-06-02 Heraeus Medical Gmbh Device and method for producing spacers
JP7384367B2 (ja) * 2020-10-20 2023-11-21 株式会社ダイエンジニアリング バルブ装置、金型およびダイカスト装置
JP2022149302A (ja) * 2021-03-25 2022-10-06 本田技研工業株式会社 遮断弁用のキャップ部材、遮断弁用の弁体、遮断弁の製造方法、および遮断弁の弁体の交換方法
CN114368122B (zh) * 2021-11-29 2023-10-20 深圳市星凯科技有限公司 一种注塑模具用检测器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612573A2 (fr) * 1993-02-02 1994-08-31 FONDAREX, F. HODLER & CIE. S.A. Valve pour désaérer des moules de coulée sous pression
EP1018384A1 (fr) * 1999-01-06 2000-07-12 Fondarex S.A. Dispositif de soupape
US6158495A (en) * 1998-02-11 2000-12-12 V.D.S. Vacuum Diecasting Service S.A. Venting valve device for die casting

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU529914B2 (en) * 1980-11-20 1983-06-23 Ube Industries, Ltd. Gas venting incorporated with a mould
US5113984A (en) * 1990-01-18 1992-05-19 Chrysler Corporation Torque converter control valve in a fluid system of an automatic transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612573A2 (fr) * 1993-02-02 1994-08-31 FONDAREX, F. HODLER & CIE. S.A. Valve pour désaérer des moules de coulée sous pression
US6158495A (en) * 1998-02-11 2000-12-12 V.D.S. Vacuum Diecasting Service S.A. Venting valve device for die casting
EP1018384A1 (fr) * 1999-01-06 2000-07-12 Fondarex S.A. Dispositif de soupape

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516687A1 (fr) * 2003-08-25 2005-03-23 Fondarex S.A. Machine à coulée sous pression sous vide ou machine de moulage par injection sous vide
WO2007084087A2 (fr) * 2006-01-17 2007-07-26 Continental Matador Rubber, S.R.O. Soupape d’event pour orifice d’event d’un moule de vulcanisation utilisé pour la fabrication de pneumatiques de vehicule
WO2007084087A3 (fr) * 2006-01-17 2007-09-13 Matador As Soupape d’event pour orifice d’event d’un moule de vulcanisation utilisé pour la fabrication de pneumatiques de vehicule
CH700743A1 (de) * 2009-04-06 2010-10-15 Fondarex Sa Entlüftungseinrichtung für Giessvorrichtungen.
US8336600B2 (en) 2009-04-06 2012-12-25 Fondarex Sa Casting device
EP2427678A1 (fr) * 2009-05-06 2012-03-14 Dürr Systems GmbH Soupape à fluide, en particulier soupape de retour pour une installation de mise en peinture
US9782786B2 (en) 2009-05-06 2017-10-10 Durr Systems Gmbh Fluid valve, in particular a return valve for a painting system
US10302215B2 (en) 2009-05-06 2019-05-28 Dürr Systems GmbH Fluid valve, in particular a return valve for a painting system
EP2427678B1 (fr) * 2009-05-06 2024-03-20 Dürr Systems AG Soupape à fluide, en particulier soupape de retour pour une installation de mise en peinture
CN105465457A (zh) * 2015-12-30 2016-04-06 广州市型腔模具制造有限公司 一种真空压铸***

Also Published As

Publication number Publication date
CA2398535A1 (fr) 2003-03-21
JP2003136191A (ja) 2003-05-14
NO20024535D0 (no) 2002-09-20
SG113433A1 (en) 2005-08-29
IL151266A0 (en) 2003-04-10
RU2002125441A (ru) 2004-03-20
KR20030025799A (ko) 2003-03-29
CN1409036A (zh) 2003-04-09
TW539818B (en) 2003-07-01
NO20024535L (no) 2003-03-24
IL151266A (en) 2010-12-30
EP1295655B1 (fr) 2006-10-25
HU0202569D0 (fr) 2002-10-28
MXPA02009193A (es) 2003-03-27
ATE343443T1 (de) 2006-11-15
JP4256647B2 (ja) 2009-04-22
ZA200206480B (en) 2003-04-10
US20030056931A1 (en) 2003-03-27
DE50208528D1 (de) 2006-12-07
BR0203816A (pt) 2003-06-03
PL356118A1 (en) 2003-03-24
HUP0202569A2 (hu) 2003-03-28
US6823930B2 (en) 2004-11-30

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