EP1018384A1 - Ventileinrichtung - Google Patents
Ventileinrichtung Download PDFInfo
- Publication number
- EP1018384A1 EP1018384A1 EP99811191A EP99811191A EP1018384A1 EP 1018384 A1 EP1018384 A1 EP 1018384A1 EP 99811191 A EP99811191 A EP 99811191A EP 99811191 A EP99811191 A EP 99811191A EP 1018384 A1 EP1018384 A1 EP 1018384A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve device
- force transducer
- valve
- closure part
- actuating element
- 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
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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
- B22D17/14—Machines with evacuated die cavity
- B22D17/145—Venting means therefor
Definitions
- the invention relates to a valve device according to the preamble of claim 1.
- the die or the cavity of the die must be during of the die casting process. It doesn't just have to be in the cavities Existing air can escape from the die casting machine and the die can, but it must also be ensured that the out escaping the liquid casting compound gases can also escape.
- vent valve the valve device is to be closed as late as possible, so that the cavity is vented as far as possible until completely filled, 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 valve piston to close the ventilation duct have.
- the valve piston is actuated externally the valve piston in the second type is operatively connected to a force transducer, the one that penetrates directly from the cavity into the ventilation channel Casting material is operated.
- Externally operated valve devices are understood to mean that the valve piston not from the casting material that penetrates from the cavity into the ventilation channel but is operated by an external energy source, the majority of which is the latter is designed as a pneumatic or hydraulic system.
- Point of time For triggering the closing process can, for example, in these valve devices 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, since that is the closing process initiating signal (electrical pulse) in a mechanical movement, for example in the actuation of a servo valve.
- 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 usually connected to a vacuum pump.
- EP 0 612 573 describes a generic valve device for venting Die casting molds known, which have a vent channel, one in the vent channel arranged vent valve and an actuator for Closing the vent valve is provided.
- the actuator has one Force transducer, which through 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.
- Prestressed actuating element that is operatively connected to the closure part has and the stop movable by foreign or cast material is so that the closure part of the vent valve under the action of the actuating element can be transferred from the open to the closed position, does not need first to build up a certain force (e.g. pneumatic) so that after releasing the actuator (moving the stop) Closure part of the vent valve is moved from the open to the closed position can be.
- a certain force e.g. pneumatic
- External actuation is understood to mean that an external one Energy source for moving the stop is provided while under Operated by the casting material is to be understood that the kinetic energy of the casting material is used to move the stop. It is both an immediate one as well as an indirect actuation of the stop, for example via a force transducer, possible.
- FIG. 1 shows a longitudinal section through a valve device actuated by casting material, which is shown in principle. 1, the basic structure of the valve device 1 explained in more detail, only in connection with essential features of the invention is addressed. For better understanding the functioning of the valve device are the essential elements in FIG. 1 shown as lying in a common vertical plane, although some of the Elements in real embodiments are not in a common vertical plane are arranged, as will become apparent from the following figures.
- the Valve device is shown in Figure 1 in the initial state, in which the to venting die is closed and its cavity (not shown) over the valve device can be vented.
- the two halves 3A, 3B Die casting mold 3 is indicated.
- the interface T of the die 3 is aligned with the front surface F of the valve device.
- the valve device has a two-part housing 2, the first one, in the present case Example left housing half with the reference number 2A and the second, in present example right housing half is provided with the reference numeral 2B.
- the first housing half 2A is provided with a ventilation channel open towards the front surface F. 10 provided, which is connected to the cavity of the die.
- a vent valve 4 In the first housing half 2A are a vent valve 4, a force transducer 5, an actuating element 6, a driver element 8 and two supported by spring assemblies Ejection organs added, with only one spring assembly from this illustration 12 and an ejection element 14 can be seen.
- the ejection elements 14 also have each a plunger 20 which, when the die 3 is open, over the front surface F protrudes.
- the vent valve 4, the force transducer 5, the actuating element 6, the driver element 8 and the two ejection elements 14 are axially parallel arranged to each other.
- the second housing half 2B is for receiving the aforementioned Elements with an essentially double T-shaped recess 25 provided, wherein individual side surfaces of this recess 25 as Anti-rotation locks are used for some of the aforementioned elements, as follows is explained in more detail.
- the actual valve 4 is a plunger valve, the longitudinal axis of which is perpendicular to the Front surface F of the housing 2 extends and the one to the ventilation duct 10 connected valve cylinder 41 and a locking part movable therein
- Form of a valve piston 42 includes.
- the valve piston 42 has a piston head 43 on the open valve 4 on the front surface F of the valve device 1 in the Vent channel 10 projects and for closing the valve 4 in the valve cylinder 41 immersed.
- a collar 45, the radial one, is provided behind the piston head 43 Has slots 46 through which the escaping from the ventilation channel 10 Air flows into an outlet duct 11 arranged on the upper side of the housing 2 can.
- At the outlet duct 11 there is a suction line of a vacuum pump (not shown) connectable.
- the valve piston 42 is under the action of a Compression spring 48, which is at the bottom of the recess 25 in the second Half of the housing 2B is supported.
- a multi-part actuating device is provided for closing the valve 4.
- the force transducers are essential components of this actuating device 5, the actuating element 6 and one arranged in the second housing half 2B Stop 7 with a pivotally mounted locking member 70 name, by means of which the actuating element 6 locks in the starting position can be.
- the force transducer 5 is on the driver element 8 with the Valve piston 42 in mechanical operative connection. That between the force transducer 5 and the vent valve 4 arranged driver element 8 has a Bund 82 on both in a recess 55 in the force transducer 5 and in a recess 44 engages in the valve piston 42.
- the length of the recess 55 in Force transducer 5 is at least approximately the closing stroke of valve piston 42 is longer than the thickness of the engaging covenant 82.
- the actuating element 6 is biased by a spring 63 and on the back provided with a cylindrical extension 61, which is under the bias the spring 63 is supported on the locking member 70.
- the force transducer 5 is designed as a short-stroke shock piston, which in one in the ventilation duct 10 opening working cylinder 50 is movable.
- the backside of the force transducer 5 forms an extension 51 which is directly up to the locking member 70 reaches.
- the force transducer points to limit the working stroke 5 a collar 53 lying against the bottom of the recess 25.
- Each of the two ejection elements 14, 15 is provided with a drive plate 17, which also engages in the recess 55 in the force transducer 5, wherein the length of the recess in the force transducer 5 approximately by the working stroke of the Force transducer (approx. 1mm) is longer than the thickness of the drive plates 17.
- the spring assemblies 12 are between the bottom of the recess 25 in the second housing part 2B and the drive plates 17, 18 arranged.
- the two plungers 20 and 21 are provided for tensioning the spring assemblies 12, 13, which pass freely through the first housing half 2A.
- the plungers 20, 21 protrude in the initial state over the front surface F from the first half of the housing 2A emerge and become when the two mold halves of the die casting mold are brought together pushed back, which for tensioning the two spring assemblies 12 in the here shown state leads.
- Fig. 2 shows a real embodiment of the valve device 1 in a longitudinal section. From this illustration it can be seen that the actuating element and the Ejection elements 14 are not in a common vertical plane with the force transducer 5, the driving element 8 and the vent valve 4.
- FIG. 3 shows an interior view of the first housing half 2A of the valve device, the valve piston 42, the force transducer 5, the actuating element 6, the Driver element 8 and the two ejection elements 14, 15 in a view from are shown at the back.
- the shape of the ventilation channel 10 is by a broken line indicated. It can also be seen that the federal government 62 of the actuating element 6 and the two drive plates 17, 18 with each a flat 23, 24, 66 and the collar 82 of the driving element 8 with two flat 57, 58 is or are provided.
- FIG. 4 shows a plan view of the second housing half 2B of the valve device, the valve piston 42, the force transducer 5, the actuating element 6, the Driver element 8 and the two ejection elements 14, 15 in a view from are shown at the front. From this illustration, the one in the second housing half 3b recessed and essentially double T-shaped recess 25 can be seen. Individual side surfaces of this recess 25 act as guide surfaces, by the flats on the collar 62 of the actuating element 6, the drive plates 17, 18 and the collar 38 of the driving element 8 on these side surfaces 27, 28, 30, 31 are performed.
- the locking member 70 of the stop 7 is pivotally mounted about an axis 71 and is by a return spring 72 in the locking the actuator 6 Starting position held. As soon as the force transducer 5 backwards the locking member 70 is moved, its extension 51 lies on the locking member 70 so that it pivots about its axis 71 in the direction of arrow P. and the actuator 6 is released. The actuator 6 is then moved backwards under the action of the force of the spring 63. Here the disk-shaped collar 62 of the actuating element 6 lies on the wall of the recess 47 in the valve piston 42 (FIG. 1), so that the valve piston 42 of the open position is moved to the closed position.
- the locking member 70 has in the region of the extension 61 of the actuating element 6 a recess 68, so that the extension 61 is only a fraction supports its average cross-sectional area on the locking member 70. Thereby a pivoting movement of the locking member 70 by about 2 ° in the direction of the arrow is sufficient P off to release the actuator 6.
- the longitudinal axis of the actuating element 6 is around the distance L2 and the longitudinal axis of the force transducer 5 by the distance L1 with respect to the axis of rotation 71 of the Locking member 70 offset. Meanwhile, the longitudinal axis 64 of the actuating element 6 by several mm on one side of the axis of rotation 71 of the locking member 70 is offset, the point of application of the actuating element 6 falls practically with the axis of rotation 71 of the locking member 70 together.
- Fig. 6 shows the valve device in the closed state. From this illustration it can be seen that the liquid casting material enters the cylinder space only to a small extent 50 of the force transducer 5 and later in the cylinder space 41 of the valve 4 can penetrate, so that the later removal of the solidified casting material the ventilation duct 10 presents no difficulties.
- Fig. 7 shows the valve device after the die has been opened.
- the Return of the force transducer 5, the actuating element 6 and the driving element 8 in the basic state shown after completion of a casting process takes place, as already mentioned above, by means of the two spring assemblies 12, 13 (Fig. 1). From this representation it can be seen that the force transducer 4 as far as was pushed into the front of the ventilation duct 10 that its head or front side lifts off the bottom of the ventilation duct 10. In this condition can lead through a first housing half 2A to the force transducer 5 Channel (not shown) air is blown past the force transducer 5. Air can also be blown out via the vent valve 4.
- Blowing out air can in particular also result in a cooling effect of the elements mentioned -force transducer 5 and vent valve 4- are effected.
- any other media which one Have cooling and / or cleaning effect or triggering the riser from the Support valve device can be used.
- the driver element 8 is also moved backwards. Since the Recess 55 in the force transducer 5, however, by at least approximately Closing stroke of the valve piston 42 is longer than the thickness of the engaging collar 38 of the entraining element 8, the valve piston 42 together with the entraining element moved back over the working stroke of the force transducer 5 become.
- valve piston 42 can also without the help of the actuating element 6 can be moved from the open to the closed position.
- that of the force transducer 5 via the driver element 8 on the Valve piston 42 transmitted pulse so that the valve piston 42 together with the driving element 8 over the working stroke of the force transducer 5 in free-running move to the closed position.
- To the from the casting material to the force transducer 5 transferred energy in the case of large casting masses and / or high ones Limiting the speeds of the casting material becomes the working stroke of the Force transducer 5 by the collar resting on the bottom of the recess 25 53 limited to approx. 1mm.
- the two ejection elements 14, 15 serve in addition to ejecting the casting material solidified in the ventilation duct 10 the return of the force transducer 5, the driving element 8, the actuating element 6 and the valve piston 42 in the initial state shown in FIG. 5.
- the two elements are formed by a plurality of disc springs Spring assemblies 12, 13. After the die 3 has been opened, the two spring assemblies 12, 13 relax because the plunger 20, 21 by the distance the corresponding mold half 3B are released from the abutting surface. The Drive disks 17, 18 now move under the action of the tensioned spring assemblies 12, 13 the force transducer 5, the driving element 8, the actuating element 6 and the valve piston 42 in the basic state.
- the movement of the stop in each case Cast material operated are also embodiments of valve devices possible, in which the stop is moved externally.
- the stop could be pneumatic, hydraulic using an external energy source or also be shifted electromagnetically, the triggering time time-controlled or could also be determined by means of a sensor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Magnetically Actuated Valves (AREA)
- External Artificial Organs (AREA)
- Compressor (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Actuator (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Air-Flow Control Members (AREA)
Abstract
Description
- sicheres Schliessen des Entlüftungsventils auch bei ungünstigen Rahmenbedingungen;
- einfacher Aufbau;
- problemloses, schnelles Zusammensetzen der Ventileinrichtung möglich;
- Begrenzung der vom Giessmaterial auf die Betätigungsvorrichtung übertragenen kinetischen Energie;
- praktisch keine Verschleissteile, ggf. können alle Teile einfach und schnell ausgetauscht werden;
- über den Kraftaufnehmer und den Ventilkolben können verschiedene Kühl- oder Reinigungsmedien bzw. Trennmittel in fester (Pulver), flüssiger oder gasförmiger Form ausgeblasen werden.
Claims (18)
- Ventileinrichtung (1) zum Entlüften von Druckgiessformen (3), mit einem Entlüftungskanal (10), einem im Entlüftungskanal (10) angeordneten und mit einem Verschlussteil (42) versehenen Entlüftungsventil (4) sowie einer Betätigungsvorrichtung zum Schliessen des Entlüftungsventils (4), dadurch gekennzeichnet, dass die Betätigungsvorrichtung ein gegen einen Anschlag (7) vorgespanntes, mit dem Verschlussteil (42) in Wirkungsverbindung stehendes Betätigungselement (6) aufweist, welcher Anschlag (7) fremd- oder giessmaterialbetätigt bewegbar ist, so dass der Verschlussteil (42) des Entlüftungsventils (4) unter Einwirkung des Betätigungselements (6) von der Offen- in die Schliessstellung überführbar ist.
- Ventileinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Betätigungsvorrichtung einen Kraftaufnehmer (5) aufweist, welcher durch aus der Kavität in den Entlüftungskanal (10) vordringendes Giessmaterial gegen den Anschlag (7) verschiebbar ist.
- Ventileinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Anschlag (7) elektromagnetisch, pneumatisch oder hydraulisch verschiebbar ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Anschlag (7) ein schwenkbar gelagertes Verriegelungsorgan (70) umfasst, welches von zumindest einer Feder (72) in der das Betätigungselement (6) verriegelnden Ausgangsstellung gehalten ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Betätigungselement (6) einen sich mit einem Bruchteil seiner mittleren Querschnittsfläche am Verriegelungsorgan (70) abstützenden Fortsatz (61) aufweist.
- Ventileinrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das Betätigungselement (6) achsparallel zum Kraftaufnehmer (5) angeordnet ist, wobei sowohl die Längsachse (64) des Betätigungselements (6) wie auch die Längsachse (53) des Kraftaufnehmers (5) gegenüber der Drehachse (71) des Verriegelungsorgans (70) beabstandet sind, und wobei die beiden Längsachsen (53, 64) in entgegengesetzter Richtung von der Drehachse (71) des Verriegelungsorgans (70) versetzt sind.
- Ventileinrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Abstand zwischen der Drehachse (71) des Verriegelungsorgans (70) und der Längsachse (64) des Betätigungselements (6) einem Bruchteil des Abstands zwischen der Drehachse (71) des Verriegelungsorgans (70) und der Längsachse (53) des Kraftaufnehmers (5) entspricht, wobei die Längsachse (64) des Betätigungselements (6) auf die eine Seite der Drehachse (71) des Verriegelungsorgans (70) versetzt ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verschlussteil (42) des Entlüftungsventils (4) über ein Mitnehmerorgan (8) kraftschlüssig mit dem Kraftaufnehmer (5) koppelbar ist.
- Ventileinrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Mitnehmerorgan (8) zwischen dem Kraftaufnehmer (5) und dem Verschlussteil (42) angeordnet ist und einen scheibenförmigen Bund (38) besitzt, der in je eine Ausnehmung (44, 55) im Kraftaufnehmer (5) und im Verschlussteil (42) eingreift.
- Ventileinrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Länge der Ausnehmung (55) im Kraftaufnehmer (5) um zumindest annähernd den Schliesshub des Verschlussteils (42) länger ist als die Dicke des eingreifenden Bundes (38), derart, dass der Verschlussteil (42) zusammen mit dem Mitnehmerorgan (6) über den Arbeitshub des Kraftaufnehmers (5) hinaus von der Offen- in die Schliessstellung bewegbar ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Betätigungselement (6) einen scheibenförmigen Bund (62) aufweist, welcher in eine Ausnehmung (47) im Verschlussteil (42) eingreift, wobei die Länge der Ausnehmung (47) im Verschlussteil (42) um zumindest annähernd den Schliesshub des Verschlussteils (42) länger ist als die Dicke des eingreifenden scheibenförmigen Bundes (62) des Betätigungselements (6) derart, dass der Verschlussteil (42) zusammen mit dem Mitnehmerorgan (8) gegenüber dem Betätigungselement (6) eine Relativbewegung in Schliessrichtung ausführen kann.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Betätigungselement (6) pneumatisch, hydraulisch oder durch Federkraft vorgespannt ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Zylinderraum (50) zur Aufnahme des im wesentlichen zylindrisch ausgebildeten Kraftaufnehmers (5) vorgesehen ist, wobei der Kraftaufnehmer (5) soweit nach vorne in den Entlüftungskanal (10) hineinbewegbar ist, dass sich dessen Stirnseite vom Boden des Entlüftungskanals (10) abhebt
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kraftaufnehmer (5) einen an die Stirnseite angrenzenden Bund (54) aufweist, dessen Durchmesser zumindest annähernd dem Durchmesser des Zylinderraums (50) entspricht, und dass der Kraftaufnehmer (5) mit einem axiale Durchlässe aufweisenden Kragen (56) versehen ist.
- Ventileinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ventileinrichtung ein zweiteiliges Gehäuse (2) aufweist, und dass der Kraftaufnehmer (5), der Verschlussteil (42), das Betätigungselement (6) sowie das Mitnehmerorgan (8) achsparallel im Gehäuse (2) aufgenommen sind.
- Ventileinrichtung nach Anspruch 15, dadurch gekennzeichnet, dass der Bund (38) des Mitnehmerorgans (8) eine kreisförmige Grundform aufweist, welche mit zwei parallel verlaufenden Abflachungen versehen ist, und dass die eine Gehäusehälfte (2A) mit Führungsflächen (27, 28) zum Führen des Bundes (38) des Mitnehmerorgans (8) versehen ist.
- Ventileinrichtung nach Anspruch 15 oder 16, dadurch gekennzeichnet, dass das Betätigungsorgan (6) einen eine kreisförmige Grundform aufweisenden Bund (62) besitzt, welcher mit einer Abflachungen versehen ist, und dass die eine Gehäusehälfte (2A) mit einer korrespondierenden als Verdrehsicherung wirkenden Führungsfläche (31) versehen ist.
- Ventileinrichtung nach einem der Ansprüche 15 bis 17, dadurch gekennzeichnet, dass das Verriegelungsorgan (70) schwenkbar in der einen Gehäusehälfte (2B) aufgenommen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1499 | 1999-01-06 | ||
CH1499 | 1999-01-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1018384A1 true EP1018384A1 (de) | 2000-07-12 |
EP1018384B1 EP1018384B1 (de) | 2003-08-13 |
Family
ID=4177453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99811191A Expired - Lifetime EP1018384B1 (de) | 1999-01-06 | 1999-12-22 | Ventileinrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US6513568B1 (de) |
EP (1) | EP1018384B1 (de) |
JP (1) | JP2000202609A (de) |
AT (1) | ATE246974T1 (de) |
CA (1) | CA2293108A1 (de) |
DE (1) | DE59906583D1 (de) |
TW (1) | TW418137B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1295655A1 (de) * | 2001-09-21 | 2003-03-26 | Fondarex S.A. | Entlüftungsventileinrichtung für Giessformen |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW579311B (en) * | 2000-09-22 | 2004-03-11 | V D S Vacuum Diecasting Servic | Diecasting valve |
DE10207028B4 (de) * | 2001-02-20 | 2008-07-24 | Toshiba Kikai K.K. | Spritzgießmaschine |
TWI296564B (en) * | 2005-07-29 | 2008-05-11 | Delta Electronics Inc | Gas exhausting and entering structure |
JP5717692B2 (ja) * | 2012-06-04 | 2015-05-13 | ジヤトコ株式会社 | 真空ダイカスト鋳造装置のバルブ装置 |
JP7068880B2 (ja) * | 2018-03-26 | 2022-05-17 | 本田技研工業株式会社 | 減圧遮断弁装置及びその制御方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0612573A2 (de) * | 1993-02-02 | 1994-08-31 | FONDAREX, F. HODLER & CIE. S.A. | Ventileinrichtung zum Entlüften von Druckgiessformen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2751431C2 (de) * | 1977-11-17 | 1986-03-06 | Fritz Territet Vaud Hodler | Entlüftungsventil für Druckgießformen |
US4852634A (en) * | 1987-10-12 | 1989-08-01 | Ryobi Ltd. | Gas venting arrangement in injection molding apparatus and method for venting gas in the injection molding apparatus |
EP0937524A1 (de) * | 1998-02-19 | 1999-08-25 | Fondarex S.A. | Verfahren zum Entlüften von Druckgiessformen sowie Ventilvorrichtung zur Durchführung des Verfahrens |
-
1999
- 1999-12-22 DE DE59906583T patent/DE59906583D1/de not_active Expired - Lifetime
- 1999-12-22 AT AT99811191T patent/ATE246974T1/de not_active IP Right Cessation
- 1999-12-22 EP EP99811191A patent/EP1018384B1/de not_active Expired - Lifetime
- 1999-12-23 CA CA002293108A patent/CA2293108A1/en not_active Abandoned
- 1999-12-29 US US09/474,218 patent/US6513568B1/en not_active Expired - Fee Related
- 1999-12-31 TW TW088123383A patent/TW418137B/zh not_active IP Right Cessation
-
2000
- 2000-01-06 JP JP732A patent/JP2000202609A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0612573A2 (de) * | 1993-02-02 | 1994-08-31 | FONDAREX, F. HODLER & CIE. S.A. | Ventileinrichtung zum Entlüften von Druckgiessformen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1295655A1 (de) * | 2001-09-21 | 2003-03-26 | Fondarex S.A. | Entlüftungsventileinrichtung für Giessformen |
US6823930B2 (en) | 2001-09-21 | 2004-11-30 | Fondarex Sa | Venting valve assembly for casting moulds |
SG113433A1 (en) * | 2001-09-21 | 2005-08-29 | Fondarex Sa | Venting valve assembly for casting moulds |
Also Published As
Publication number | Publication date |
---|---|
ATE246974T1 (de) | 2003-08-15 |
EP1018384B1 (de) | 2003-08-13 |
TW418137B (en) | 2001-01-11 |
CA2293108A1 (en) | 2000-07-06 |
DE59906583D1 (de) | 2003-09-18 |
US6513568B1 (en) | 2003-02-04 |
JP2000202609A (ja) | 2000-07-25 |
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