EP0714331B1 - Fonctionnement d'une machine a coulee sous pression a chambre chaude et machine a coulee sous pression appropriee - Google Patents

Fonctionnement d'une machine a coulee sous pression a chambre chaude et machine a coulee sous pression appropriee Download PDF

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Publication number
EP0714331B1
EP0714331B1 EP95920872A EP95920872A EP0714331B1 EP 0714331 B1 EP0714331 B1 EP 0714331B1 EP 95920872 A EP95920872 A EP 95920872A EP 95920872 A EP95920872 A EP 95920872A EP 0714331 B1 EP0714331 B1 EP 0714331B1
Authority
EP
European Patent Office
Prior art keywords
casting machine
hot
chamber die
die casting
control device
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
EP95920872A
Other languages
German (de)
English (en)
Other versions
EP0714331A1 (fr
Inventor
Roland Fink
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.)
Oskar Frech GmbH and Co KG
Original Assignee
Oskar Frech GmbH and Co KG
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 Oskar Frech GmbH and Co KG filed Critical Oskar Frech GmbH and Co KG
Publication of EP0714331A1 publication Critical patent/EP0714331A1/fr
Application granted granted Critical
Publication of EP0714331B1 publication Critical patent/EP0714331B1/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
    • B22D17/32—Controlling equipment

Definitions

  • the invention relates to a hot chamber die casting machine according to the preamble of claim 1.
  • Hot chamber die casting machines of this type are known (DE-AS 21 43 937). In these machines, the one that is immersed in the melt Casting container with a casting cylinder with a riser hole and provided with a mouthpiece body attached to it, which can be led up to the shape.
  • the bath level is one with these hot chamber die casting machines of the main disturbances.
  • a different bathroom level can be too different filling processes in the printing form. Is the bathroom mirror e.g. too high, then the mold cavity already becomes filled during the first phase. If it is too low, then come the start of the second phase already in the casting container or in the mouthpiece body and there is an empty shot that leads to high pressure peaks can lead.
  • the object of the invention is to overcome these disadvantages avoid.
  • To solve this problem are in a hot chamber die casting machine of the type mentioned at the outset Features of claim 1 provided.
  • the position of the metal front can be grasped exactly, so that from this point on the further material flow via sprue pins and sprue channels can be clearly determined.
  • the press-in process via - known per se - highly dynamic continuous valves can be controlled with switching times between 1 to 5ms operated by the control device and one to the product allow adapted speed and pressure control.
  • This configuration can in particular if the Control device designed as digital control electronics digital speed and pressure control is achieved that allows it to be used throughout the filling process Approach different points at different speeds.
  • the reprint is also freely selectable.
  • the form can also be an evacuation device with a vacuum pump and with one of these upstream Be assigned to the valve by the control device is additionally operated. It can also be provided that the nozzle tip can be inserted into a receptacle of the mouthpiece body is, so that the metal sensor then in this recording space the mouthpiece body is inserted. Then it stays the possibility of providing different nozzle tips without need to change the arrangement of the metal sensor.
  • those provided as metal sensors that are non-contact work, such as corresponding to the metal front Magnetic field sensors or ultrasonic sensors then exist at Installation also no sealing problems, as with sensors that triggered when touching the metal front because of the high pressures and temperatures can occur.
  • the casting container (2) has a riser hole (4), the upper end of which is conical Has a receiving opening for inserting a mouthpiece body (5), which can be heated in a known manner and which on his a conical end facing away from the insertion opening (6) Has receptacle (7) for a nozzle tip (8) in the shape (9) protrudes, the sprue channels (10) in the actual Pass over the molding space (11).
  • a metal sensor (13) which is connected via a connecting cable (14) is connected to a control device (15) which consists of the Fig. 2 can be seen.
  • the metal beam reaches the metal sensor during the casting process (13) at the tip of the mouthpiece body (5), then in the exact course of the mold filling process is sensitive to be controlled. Uncertainties where the metal beam does not exist.
  • the touch metal sensor shown could also be non-contact sensors be provided, which does not lead into the metal beam and must be sealed against it, but in Insert blind holes that are closed to the metal flow.
  • Such sensors could e.g. Magnetic field sensors or also Be ultrasonic sensors.
  • Fig. 2 shows that the piston rod (3) of the casting piston of a press cylinder (16) is guided, on the outflow side Valve (17) is arranged, which is known as a highly dynamic Continuous valve is formed.
  • This valve (17) is operated via a two-stage pilot valve (18) if A corresponding pulse comes from the control device (15).
  • the control device (15) is designed as digital control electronics trained and in it e.g. the setpoints for six Phases of the press-in process are saved for generation of a certain product.
  • the control device (15) enables real-time control and maintains it Start impulses for this time control on the one hand from the metal sensor (13), but it can also be from a path-dependent one Obtained scanner (19) which e.g.
  • a suitable device (20) is connected to the plunger of the press cylinder (16), so that whose position within the press cylinder (16) can be detected. It there is also the possibility of increasing the pressure at the nozzle tip by a sensor in the hydraulics and thus initiate the signal for the start of the second phase, in which increases the pressure significantly.
  • Both the path dependent Values as well as the signals from the metal sensor (13) can be found in known manner also additionally a screen (21) are supplied with a graphic display of the respective Casting parameters enabled.
  • the control device (15) can also be connected to a valve (22), which is one not shown, the form (11) downstream vacuum device is connected upstream and can prevent that from the evacuated metal flowing into the ventilation ducts Vacuum pump arrives.
  • the control valve (17) on the drain side of the casting cylinder is attached, works in the filling phase as a speed control valve.
  • the speed is a function programmed the pouring plunger position and the corresponding actual values can via the device (19) on the screen and be given to the control device.
  • the continuous valve is a pressure control valve.
  • the corresponding Setpoints for distance, speed and pressure are given to the control device entered. With those received from the metal sensor
  • the control device (15) can signal exact real-time control cause the press-in process, which is independent of the bath level inside the tub (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (6)

  1. Machine de coulée sous pression à chambre chaude, dans laquelle le processus d'injection est influencé par un dispositif de commande électronique, auquel sont transmis des signaux d'entrée provenant du dispositif d'injection, comprenant un récipient de coulée (2), immergé dans la masse en fusion et muni d'une forure verticale (4) et d'un corps de filière (5) attenant à celle-ci, qui est guidé dans le moule (9) par une tête de tuyère (8), caractérisée en ce que, dans la zone de la tête du corps de filière (5), il est prévu un capteur de métal (13) qui est relié avec le dispositif de commande (15) et lui transmet également des signaux d'entrée, et en ce qu'il est prévu des soupapes à action continue (17) très dynamiques avec des durées de connexion entre 1 et 5 ms, qui sont destinées à influencer le processus d'injection et qui sont actionnées par le dispositif de commande (15) et permettent de réguler la vitesse et la pression en fonction du produit.
  2. Machine de coulée sous pression à chambre chaude selon la revendication 1, caractérisée en ce qu'une tête de tuyère (8) peut être insérée dans un logement (7) du corps de filière (5) et en ce que le capteur de métal (13) est monté dans la cavité de réception (12) du corps de filière (5) pour la tête de tuyère (8).
  3. Machine de coulée sous pression à chambre chaude selon la revendication 1, caractérisée en ce que le moule (9) est associé à un dispositif d'évacuation muni d'une pompe à vide et d'une vanne (22) montée en amont de celle-ci, qui peut être actionnée par le dispositif de commande (15).
  4. Machine de coulée sous pression à chambre chaude selon la revendication 1, caractérisée en ce que les capteurs de métal prévus sont des capteurs qui réagissent sans contact à la présence du métal en fusion.
  5. Machine de coulée sous pression à chambre chaude selon la revendication 4, caractérisée en ce que le capteur de métal prévu est un capteur à champ magnétique.
  6. Machine de coulée sous pression à chantre chaude selon la revendication 1, caractérisée en ce que le capteur de métal prévu est un capteur électrique (13) qui pénètre avec une surface de contact dans le corps de filière (5).
EP95920872A 1994-06-07 1995-05-23 Fonctionnement d'une machine a coulee sous pression a chambre chaude et machine a coulee sous pression appropriee Expired - Lifetime EP0714331B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4419848 1994-06-07
DE4419848A DE4419848C1 (de) 1994-06-07 1994-06-07 Warmkammer-Druckgießmaschine
PCT/EP1995/001963 WO1995033588A1 (fr) 1994-06-07 1995-05-23 Fonctionnement d'une machine a coulee sous pression a chambre chaude et machine a coulee sous pression appropriee

Publications (2)

Publication Number Publication Date
EP0714331A1 EP0714331A1 (fr) 1996-06-05
EP0714331B1 true EP0714331B1 (fr) 2000-03-22

Family

ID=6519979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95920872A Expired - Lifetime EP0714331B1 (fr) 1994-06-07 1995-05-23 Fonctionnement d'une machine a coulee sous pression a chambre chaude et machine a coulee sous pression appropriee

Country Status (7)

Country Link
US (1) US5699849A (fr)
EP (1) EP0714331B1 (fr)
JP (1) JP3824171B2 (fr)
AT (1) ATE190880T1 (fr)
DE (2) DE4419848C1 (fr)
ES (1) ES2144612T3 (fr)
WO (1) WO1995033588A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649621B4 (de) * 1996-11-29 2007-08-02 EWIKON Heißkanalsysteme GmbH & Co KG Verbindungsanordnung für Schmelzekanalabschnitte in Heißkanälen
ES2205643T3 (es) * 1999-04-13 2004-05-01 OSKAR FRECH GMBH & CO. Maquina de colada a presion de camara caliente.
EP1097765A4 (fr) * 1999-04-28 2005-02-09 Sumitomo Metal Ind Regulation du niveau de la surface du metal dans un moule en moulage continu
ATE291513T1 (de) * 2000-10-27 2005-04-15 Frech Oskar Gmbh & Co Kg Warmkammerdruckgiessmaschine und betriebsverfahren hierfür
JP4175602B2 (ja) * 2001-07-02 2008-11-05 徹一 茂木 鋳造用注湯装置
ES2253309T3 (es) * 2001-08-09 2006-06-01 Oskar Frech Gmbh + Co. Kg Procedimiento para el funcionamiento de una moldeadora a presion de camara caliente y moldeadora a presion.
CA2628504C (fr) 2007-04-06 2015-05-26 Ashley Stone Dispositif de coulage
DE102011017610B3 (de) * 2011-04-27 2012-06-21 Oskar Frech Gmbh + Co. Kg Gießkolben und Gießeinheit mit Absperrventil
DE102015000738B3 (de) * 2015-01-21 2016-05-25 Audi Ag Warmkammer-Druckgussanlage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE157168C (fr) * 1903-05-23
DE2143937B2 (de) * 1971-09-02 1977-05-18 Oskar Frech, Werkzeugbau, 7061 Weiler Giessbehaelter fuer eine warmkammer- druckgiessmaschine
DD157168A1 (de) * 1981-03-13 1982-10-20 Gerhard Losemann Vorrichtung zur hydraulischen geschwindigkeits-und druckregelung in spritzgiessmaschinen
DE3142811A1 (de) * 1981-10-28 1983-05-05 Idra Pressen GmbH, 7000 Stuttgart Verfahren und vorrichtung zur regelung der giesskolbenbewegung waehrend des einpressvorganges an einer druckgiessmaschine
JPS6234659A (ja) * 1985-08-09 1987-02-14 Hitachi Metals Ltd ダイカストマシンの射出速度切換え方法
JPS6340661A (ja) * 1986-08-01 1988-02-22 Tanabe Kogyo Kk 溶融金属の給湯装置
DE3636936A1 (de) * 1986-10-30 1988-05-05 Buehler Ag Geb Druck- oder spritzgiessmaschine
DE3917487A1 (de) * 1989-05-30 1990-12-06 Frech Oskar Gmbh & Co Giessbehaelter fuer warmkammer-druckgiessmaschinen
US5125450A (en) * 1990-05-07 1992-06-30 Electrovert Ltd. Method of and system for controlling flow of molten liquid to cast metal alloys
DE4216773A1 (de) * 1992-05-21 1993-11-25 Kurt Loeffler Druckgus Gmbh & Druckgußvorrichtung
DE4218556A1 (de) * 1992-06-05 1993-12-09 Mueller Weingarten Maschf Verfahren und Vorrichtung zur Durchführung des Verfahrens zur Prozeßsteuerung einer Druckgießmaschine

Also Published As

Publication number Publication date
US5699849A (en) 1997-12-23
EP0714331A1 (fr) 1996-06-05
JPH09501360A (ja) 1997-02-10
WO1995033588A1 (fr) 1995-12-14
DE59508044D1 (de) 2000-04-27
DE4419848C1 (de) 1995-12-21
ATE190880T1 (de) 2000-04-15
ES2144612T3 (es) 2000-06-16
JP3824171B2 (ja) 2006-09-20

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