EP1301301A1 - Dispositif pour produire des pieces coulees, comportant une paroi d'une chambre de moulage par injection, qui est inserable dans le moule - Google Patents

Dispositif pour produire des pieces coulees, comportant une paroi d'une chambre de moulage par injection, qui est inserable dans le moule

Info

Publication number
EP1301301A1
EP1301301A1 EP01953863A EP01953863A EP1301301A1 EP 1301301 A1 EP1301301 A1 EP 1301301A1 EP 01953863 A EP01953863 A EP 01953863A EP 01953863 A EP01953863 A EP 01953863A EP 1301301 A1 EP1301301 A1 EP 1301301A1
Authority
EP
European Patent Office
Prior art keywords
chamber
mold
walls
casting
wall
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.)
Withdrawn
Application number
EP01953863A
Other languages
German (de)
English (en)
Inventor
Christian Boehnke
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.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst 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 Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP1301301A1 publication Critical patent/EP1301301A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B22D17/2015—Means for forcing the molten metal into the die
    • 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
    • B22D17/007—Semi-solid pressure die casting

Definitions

  • the invention relates to a device according to the preamble of
  • a generic device is known from EP 1 046 444 A1. With three pistons, a variable volume chamber is created for the material to be injected. Two pistons are axially movable in a tubular cavity, and a third piston can be moved transversely to the longitudinal axis of the chamber between the two aforementioned pistons in order to transport the material into the mold cavity. This requires a precise seal between the three pistons from each other and from the chamber. With regard to the space requirement and the demands on the authenticity, the generic device is very expensive to manufacture.
  • DE 199 14 830 A1 describes a device in which two walls designed as a valve and as a piston are axially movable in a tubular cavity.
  • DE 43 10 755 A1 describes a device in which two walls designed as a non-driven, movable clamping disk and as a driven piston are axially movable in a tubular cavity. They border on a sprue, through which the material to be injected enters the actual mold cavity.
  • Interchangeable mold inserts are known from "Ernst Brunnhuber” Modern Die Casting Production “Fachverlag Schiele and Schön GmbH, Berlin, 1971, pages 137 and 139", which can form parts of the wall of the mold cavity.
  • the present invention has for its object to improve a generic device so that it is as powerful as possible, compact dimensions and can be operated as inexpensively.
  • the invention proposes not to arrange the movable chamber walls exclusively outside the casting mold, but to enable the chamber contents to be shifted into the casting mold. In this way, material savings can be achieved since the sprue can be avoided or significantly reduced. As a result, the amount of material to be fed into the circuit can be reduced, which has to be cooled again in each circuit and then melted again and which may have a burn-up of expensive alloy elements, this burn-up always having to be supplemented.
  • the sprue can be reduced or can be omitted entirely reduces the amount of heated material and thus also the temperature load on the injection unit and the mold itself, so that shorter cooling phases are possible and consequently a higher number of units per unit time can be produced, so that the performance of the system is improved.
  • the material passes directly from the chamber into the casting mold without an intermediate injection channel enables large flow cross sections and, if necessary, deflections of the material flow can thereby be avoided.
  • the material therefore does not have to be heated as high as to allow for an optimal flow of comparatively small inflow channels into the mold or for long paths to flow through. In this way, a lower temperature level of the melt can be set, so that this measure also reduces the temperature load on the device and — as already mentioned — shortens cooling times and increases the performance of the device.
  • the injection unit extends into the casting mold and is not arranged exclusively outside the casting mold, the device can be produced with compact dimensions. This is made possible in particular by the fact that one of the two walls can not only be brought up to the casting mold, but can also be guided into the casting mold.
  • One of the two movable walls of the chamber of the injection unit can advantageously be formed as part of that wall of the mold cavity which is designed to be movable for opening the mold. In this way, complicated multi-axis movements can be avoided and it is ensures that when opening the mold this wall of the injection unit, which can be guided into the casting mold, is moved together with the part of the casting mold to be opened, so that the accessibility to the casting can be maintained unchanged when the mold is open and allows optimum accessibility for removing the casting.
  • Fig. 1 to 6 an apparatus for producing castings in different phases of a casting process.
  • Fig. 1, 1 generally designates a device for
  • the device 1 has a two-part mold 2, which is in its closed arrangement in FIG. 1. Furthermore, the device 1 has an injection unit 3, which serves to inject the flowable material into the mold 2. 1 shows the injection unit 3 in an initial phase of its filling process:
  • a conveyor unit 4 conveys molten or at least partially molten material into a chamber 5 of the injection unit 3.
  • the chamber walls are formed by a round tube 6, an injection piston 7 and a sealing piston 8.
  • Fig. 1 the volume of the chamber 5 is comparatively small.
  • the chamber volume can possibly be completely minimized by bringing the two pistons 7 and 8 together. In any case, it is ensured that even oxidation-friendly material can be processed without any problems, because contact with ambient air can be largely avoided.
  • the material will conveyed by the delivery unit 4 into the chamber 5 and adapted to the amount of material flowing in, the sealing piston 8 is increasingly removed from the injection piston 7, as shown in FIG. 2.
  • Fig. 2 shows the injection unit 3 in an end phase of its filling process when the injection unit 3 is largely filled with the material to be cast.
  • the volume of the chamber 5 has increased accordingly, and the injection piston 7 is still in a position in which the access from the delivery unit 4 into the chamber 5 is open.
  • Chamber 5 closed opposite the delivery unit 4.
  • the sealing piston 8 is led out of the tube 6 and into the form 2. This opens the tube 6 and thus the chamber 5. A further movement of the injection piston 7 causes the material from the chamber 5 to be injected into the mold 2.
  • the end position of the injection piston 7 can be seen from FIG. 4.
  • the sealing piston 8 is located within the casting mold 2 in a position in which it forms part of the wall of the casting mold 2, which delimits a mold cavity 9 which determines the later contour of the casting.
  • it is a casting, for. B. a rotationally symmetrical component such as a wheel, a cover or the like.
  • the shaping of the sealing piston 8 is directly involved and can be contoured accordingly to determine the desired surface profile of the casting.
  • the sprue point is shifted into the casting, so that advantageously a "sprue" in the conventional sense, that is to say a part, which has to be removed from the casting and can only be used as a recycle material is eliminated.
  • one or more individual end products are arranged radially around the area of the two pistons 7 and 8, so that the casting produced comprises on the one hand this number of products and a sprue which extends from the area between the pistons 7 and 8 extends to these products.
  • the sprue is therefore minimal and has no components that lead out of the actual casting mold 2.
  • the injection piston 7 can be guided further than shown in FIG. 3 in order to keep the material thickness of the sprue as small as possible.
  • the casting mold 2 consists of a stationary molded part 10 and a mold part 11 which is movable relative thereto.
  • the sealing piston 8 is mounted within the movable mold part 11 and can be moved together or separately with the movable mold part 11, so that after opening the mold 2 the removal of the
  • Casting can take place unhindered with the same good accessibility as in a conventional injection unit, in which all components are arranged outside the mold 2.
  • the movable molded part 11 can be brought back to the fixed molded part 10 of the casting mold.
  • the sealing piston 8 is again guided to the injection piston 7 remaining in its end position. 6 that the sealing piston 8 is preferably brought up to the injection piston 7 in order to enable a minimal volume of the chamber 5 before the mold 2 is completely closed. In this way, the escape of the ambient atmosphere can be easily made, so that the chamber 5 with minimal
  • Chamber volume is set. For safety reasons only In order to avoid mechanical damage to the pistons 7 and 8, the piston control shown does not allow the pistons 7 and 8 to rest directly against one another.
  • the mold 2 is closed, i. H. the movable molded part 11 is completely brought up to the fixed molded part 10 and then the clamping plates of the casting mold 2 are locked in order to absorb the injection pressures.
  • An advantage of a device according to the invention is that the sealing piston 8 can be supported on the movable molded part 11 during the injection process, so that there is no need for a separate support for the sealing piston 8 in terms of cost and construction, since those acting on the sealing piston 8 Injection pressures are taken from the mold 2 or from the clamping plates.
  • Casting mold 2 has been closed, the chamber 5 is displaced by a movement of the two pistons 7 and 8 in the same direction and at the same speed until the chamber 5 is in front of the opening of the conveyor unit 4, so that a new working cycle can take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un dispositif permettant de produire des pièces moulées à base d'un produit de départ coulant ou à pouvoir de diffusion. Ce dispositif comprend une unité d'injection d'où le produit, liquéfié au moins en partie, peut être injecté dans un moule. L'unité d'injection comporte une ouverture d'entrée pour acheminer le produit et l'unité d'injection présente une chambre munie de deux parois mobiles pouvant être déplacées au choix, soit ensemble dans la même direction, soit en sens contraire, de sorte que l'espace intérieur de la chambre puisse être modulable en volume et/ou puisse coulisser. Une des deux parois forme une partie de la paroi délimitant l'empreinte. Une des deux parois peut être introduite dans le moule.
EP01953863A 2000-07-07 2001-06-30 Dispositif pour produire des pieces coulees, comportant une paroi d'une chambre de moulage par injection, qui est inserable dans le moule Withdrawn EP1301301A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10033166 2000-07-07
DE10033166A DE10033166A1 (de) 2000-07-07 2000-07-07 Vorrichtung zum Herstellen von Gußstücken, mit in die Gießform führbarer Wandung
PCT/DE2001/002486 WO2002004147A1 (fr) 2000-07-07 2001-06-30 Dispositif pour produire des pieces coulees, comportant une paroi pouvant inserable dans le moule

Publications (1)

Publication Number Publication Date
EP1301301A1 true EP1301301A1 (fr) 2003-04-16

Family

ID=7648201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953863A Withdrawn EP1301301A1 (fr) 2000-07-07 2001-06-30 Dispositif pour produire des pieces coulees, comportant une paroi d'une chambre de moulage par injection, qui est inserable dans le moule

Country Status (8)

Country Link
US (1) US20030173053A1 (fr)
EP (1) EP1301301A1 (fr)
JP (1) JP2004502549A (fr)
KR (1) KR20020064281A (fr)
BR (1) BR0106937A (fr)
DE (1) DE10033166A1 (fr)
TW (1) TW558467B (fr)
WO (1) WO2002004147A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7216690B2 (en) * 2004-06-17 2007-05-15 Ut-Battelle Llc Method and apparatus for semi-solid material processing
US7897046B2 (en) * 2006-01-25 2011-03-01 Baldwin Filters, Inc. Fluid filter
JP5729239B2 (ja) * 2011-09-28 2015-06-03 宇部興産機械株式会社 射出成形装置及び射出成形方法
KR102445096B1 (ko) 2022-04-06 2022-09-20 주식회사 처음부터재테크 컴퓨터의 성능 업그레이드를 위한 디스크 착탈 장치
CN116851700B (zh) * 2023-07-06 2024-04-05 东莞市铭能五金有限公司 一种铝合金压铸结构部件成型模具

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661883A5 (en) * 1982-10-20 1987-08-31 Inst Po Metalloznanie I Tekno Submerged-plunger (hot-chamber piston) die-casting method and a machine for carrying out the method
FR2665654B1 (fr) * 1990-08-09 1994-06-24 Armines Machine de coulee sous pression d'un alliage metallique a l'etat thixotropique.
JPH07509407A (ja) * 1992-07-23 1995-10-19 ハイテク・メタルズ・リミテッド 成形装置
DE4310755C2 (de) * 1993-04-01 1996-04-25 Druckgusswerk Moessner Gmbh We Druckgießvorrichtung
CH690753A5 (de) * 1996-10-29 2001-01-15 Buehler Ag Patentabteilung Vorrichtung und Verfahren zum Verarbeiten Thixotropen Metalls.
DE19914830A1 (de) * 1999-04-01 2000-10-05 Buehler Druckguss Ag Uzwil Verfahren zum Vakuum-Druckgiessen und Druckgiessform
EP1046444B1 (fr) * 1999-04-20 2002-03-06 Ritter Aluminium Giesserei Gmbh Procédé de coulée sous pression

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0204147A1 *

Also Published As

Publication number Publication date
KR20020064281A (ko) 2002-08-07
US20030173053A1 (en) 2003-09-18
JP2004502549A (ja) 2004-01-29
DE10033166A1 (de) 2002-01-24
WO2002004147A1 (fr) 2002-01-17
TW558467B (en) 2003-10-21
BR0106937A (pt) 2002-05-14

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Free format text: DEVICE FOR PRODUCING CASTINGS THAT COMPRISES A WALL OF AN INJECTION CASTING CHAMBER, WHICH CAN BE GUIDED INTO THE CASTING

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