EP1940573A1 - Diecasting process and diecasting device - Google Patents
Diecasting process and diecasting deviceInfo
- Publication number
- EP1940573A1 EP1940573A1 EP06790941A EP06790941A EP1940573A1 EP 1940573 A1 EP1940573 A1 EP 1940573A1 EP 06790941 A EP06790941 A EP 06790941A EP 06790941 A EP06790941 A EP 06790941A EP 1940573 A1 EP1940573 A1 EP 1940573A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- opening
- casting chamber
- filling
- molten metal
- 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- Withdrawn
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
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
- B22D17/10—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with horizontal press motion
-
- 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
- B22D17/2281—Sprue channels closure devices therefor
-
- 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
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
Definitions
- the invention relates to a method for diecasting, in particular for die casting of parts made of metal alloys, in particular of aluminum materials, magnesium or zinc materials and a device for die casting of such parts.
- DE-A-4326325 discloses a method for selectively discharging a metallurgical vessel.
- the vessel has a drain port in the bottom area, in which a part of the vessel contents is solidified, so that a plug is formed.
- the thus closed drainage nozzle can be opened by causing the plug to melt.
- the discharge nozzle is associated with an induction heater.
- EP-B-1 165 274 discloses a die-casting mold, in particular for vacuum pressure casting, with a device for evacuating the mold cavity and the casting chamber, wherein a face opening of the casting chamber to the mold through a valve can be closed, wherein the valve has a throttle channel.
- the casting chamber can be vented while the molten metal is already being moved in the direction of this opening.
- the invention has for its object to develop a die casting, with which the cycle time for die cast parts of aluminum, magnesium or zinc materials or higher melting metals such as copper or steel per shot can be significantly reduced.
- the object is achieved by the features of claims 1 or 2.
- the casting chamber is partially or completely filled with melt, without interrupting the working cycle of the casting machine.
- the casting chamber is preferably part of a horizontal cold chamber die casting machine.
- the filling of the casting chamber can be done 100%.
- the closure is formed by mechanically moving closure elements, in particular independently acting elements.
- an opening of the casting chamber to the mold resp. formed to the sprue by a material closure is preferably a plug, which may also be disc-shaped from at least partially solidified material (casting material), the material being at a liquidus temperature has cooled. Before the next shot, this plug is to be at least partially melted, for which purpose the energy of the melt replenished in the casting chamber and / or a heating device is used.
- a material closure is preferably a plug, which may also be disc-shaped from at least partially solidified material (casting material), the material being at a liquidus temperature has cooled. Before the next shot, this plug is to be at least partially melted, for which purpose the energy of the melt replenished in the casting chamber and / or a heating device is used.
- the casting piston must stop at the current shot in front of the stopper to be formed.
- the procedure contains the steps:
- Another object is to provide a die casting apparatus which allows a significant reduction in the cycle time of a shot. This object is achieved with the features of claim 11.
- the device is characterized in that an opening of a casting chamber of a die casting machine can be closed to a mold by means of a movable closure.
- closure element could also be a "plug" of melt to be cast, and a closure in the form of a magnetic field is also possible.
- the closure element is preferably located on the fixed mold half and at least partially closes the casting chamber with respect to the opening size.
- the closure element can thus remain in this position when shooting, which also causes a time saving.
- a flow front sensor according to DE-A-10011529 can be arranged to determine the degree of filling in the casting chamber. Likewise, an optimal starting point for a shot could be recalculated with the machine control, even with interrogation of a closing signal of the mold.
- the closure element may be suitably coated and include heating or cooling.
- non-productive time is the expiration time of an activity which is exempted from the cycle and performed in parallel with other activities without altering the process.
- Fig. 1 Filling of the casting chamber and simultaneous closure of the mold
- Fig. 2 Casting with closed slide
- Fig. 3 Process Scheme.
- a die casting machine has a casting chamber 4 with a filling opening 6 for molten metal and a casting piston 5.
- the casting chamber 4 is fixed Mold half 1 connected, which in turn corresponds to a movable mold half 2.
- the movable mold half 2 is moved in the direction of the arrow 7, the cavity 3 is formed.
- a vertically movable slide 8 is arranged in front of an opening 9 of the casting chamber 4 to form.
- the opening 9 is part of the sprue, the upper part of the slider 8 may be formed so that it forms the beginning of the sprue with.
- the slide 8 can also completely close the opening 9.
- the movable mold half is moved in the direction of the arrow 7 and the mold is closed. Shortly before the beginning of the filling process or at the latest with this, the slider 8 is moved upward to at least partially close the opening 9.
- the casting piston 5 is moved in the direction of the opening 9 and the molten metal 10 is pressed into the cavity 3.
- the dosage in the casting chamber 4 can be made from above or from below.
- An opening for metering from above can also be used as a counter hole for venting the casting chamber 4 (reduction of counterpressure waves).
- the mold can be vented.
- a casting piston 5 opposite the frontal opening to a runner of the cavity 3 of a mold is completely sealed.
- This sealing of the opening is achieved by a plug of the material to be cast.
- This plug is formed by "excess" molten metal by the casting piston 5 is moved so far in the direction of the opening after a filling of the casting chamber 4, that the mold cavity is completely filled with molten metal and a Schmelzerest remains in the casting chamber 4 in front of the opening
- the stopper when ancestor of the casting piston 5 is at least partially heated by means of a heater. wisely melted again. Possibly.
- the heat of the molten metal can also be used.
- the mold is opened and the slider 8 moves simultaneously (with the mold) down.
- the casting piston 5 ejects the press rest and the mold is sprayed for the next shot.
- the slider 8 may consist of different materials which are suitable for insulation, cooling or melt resistance.
- the opening 9 during filling of the molten metal 10 also completely close and the opening 9 is only fully or partially opened for pressing the molten metal 10 (depending on the degree of filling of the casting chamber 4).
- the slide 8 could also be arranged horizontally movable. Likewise, a valve-like design of the slide 8 is conceivable.
- the slide 8 is displaced parallel to the opening 9 of the casting chamber 4, wherein the slide 8 can then be arranged even at an angle movable guide levers.
- the slider may also include an opening for the passage of the melt.
- the slider may further include an additional vent.
- the solid mold half 1 may also contain ejectors or the like.
- the closed casting chamber 4 can already be filled with the required amount of melt during a spraying process. To minimize air pockets hold, can be waited for a settling time after filling the casting chamber 4.
- the casting piston 5 moves as far as from until the casting chamber 4 is filled to almost 100%.
- said operations can be carried out in the open mold during the spraying in the off-peak time.
- the cycle time is significantly reduced.
- the slider 8 When opening the mold, the slider 8 can be kept closed to separate casting and tablet from each other. The solidification time of the tablet can thus also be shifted to the off-peak time.
- the casting chamber 4 is also thermally insulated, its heat loss can also be reduced. Alternatively, the casting chamber could also be cooled.
- Pre-solidification can be reduced and the casting quality can be increased.
- the casting chamber 4 may consist of a steel, be coated with a ceramic material, be lined with a ceramic sleeve or consist entirely of ceramic or a metal matrix composite or a fully effetnitrator, powder metallurgy produced material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005051169A DE102005051169A1 (en) | 2004-11-03 | 2005-10-24 | Pressure casting using a horizontal cold chamber pressure casting machine useful for casting workpieces involves metering a metal melt into a casting chamber, compacting the melt into a cating piston and withdrawal of the cast part |
PCT/CH2006/000562 WO2007048260A1 (en) | 2005-10-24 | 2006-10-11 | Diecasting process and diecasting device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1940573A1 true EP1940573A1 (en) | 2008-07-09 |
Family
ID=37461576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06790941A Withdrawn EP1940573A1 (en) | 2005-10-24 | 2006-10-11 | Diecasting process and diecasting device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090211724A1 (en) |
EP (1) | EP1940573A1 (en) |
JP (1) | JP2009512558A (en) |
KR (1) | KR20080059563A (en) |
CN (1) | CN101296769A (en) |
CA (1) | CA2623158A1 (en) |
WO (1) | WO2007048260A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101698228A (en) * | 2009-10-22 | 2010-04-28 | 苏州市永创金属科技有限公司 | Die mold |
CN101700566B (en) * | 2009-11-25 | 2011-09-07 | 北京有色金属研究总院 | Press chamber for rheological die-casting and die-casting method |
JP5754700B2 (en) * | 2010-10-07 | 2015-07-29 | 東芝機械株式会社 | Molding machine |
WO2013141866A1 (en) * | 2012-03-22 | 2013-09-26 | Crucible Intellectual Property Llc | Methods and systems for skull trapping |
DE112014004304T5 (en) * | 2013-09-19 | 2016-09-01 | Magna International Inc. | High pressure casting device and high pressure casting process |
CN105499536B (en) * | 2015-12-24 | 2017-05-17 | 北京有色金属研究总院 | Automatic slurry conveying device for rheologic die-casting process and working mode thereof |
CN105880510A (en) * | 2016-04-27 | 2016-08-24 | 唐汇龙 | Die casting feeding barrel and exhausting method for die casting feeding barrel |
CN107838392A (en) * | 2017-11-28 | 2018-03-27 | 湖南汉星机械制造有限公司 | A kind of die-casting system |
EP3827913A1 (en) * | 2019-11-29 | 2021-06-02 | Heraeus Deutschland GmbH & Co KG | Injection molding system for injection molding of amorphous metals |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH668014A5 (en) * | 1984-07-26 | 1988-11-30 | Mueller Weingarten Maschf | Closure for injection moulding casting chamber |
WO1997021509A1 (en) * | 1995-12-12 | 1997-06-19 | Thixomat, Inc. | Apparatus for processing semisolid thixotropic metallic slurries |
DE10039591A1 (en) * | 2000-08-12 | 2002-02-21 | Krauss Maffei Kunststofftech | Process for die casting metallic moldings comprises preparing a metallic material, accumulating, injecting into a die casting tool, closing the nozzle after the injection |
-
2006
- 2006-10-11 CA CA002623158A patent/CA2623158A1/en not_active Abandoned
- 2006-10-11 EP EP06790941A patent/EP1940573A1/en not_active Withdrawn
- 2006-10-11 JP JP2008536899A patent/JP2009512558A/en not_active Withdrawn
- 2006-10-11 US US12/091,158 patent/US20090211724A1/en not_active Abandoned
- 2006-10-11 WO PCT/CH2006/000562 patent/WO2007048260A1/en active Application Filing
- 2006-10-11 CN CNA2006800395014A patent/CN101296769A/en active Pending
- 2006-10-11 KR KR1020087008444A patent/KR20080059563A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2007048260A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20080059563A (en) | 2008-06-30 |
CA2623158A1 (en) | 2007-05-03 |
JP2009512558A (en) | 2009-03-26 |
US20090211724A1 (en) | 2009-08-27 |
WO2007048260A1 (en) | 2007-05-03 |
CN101296769A (en) | 2008-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080303 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: STUDER, JOHANNES Inventor name: WATZINGER, BERND Inventor name: HANSELMANN, WERNER Inventor name: MORET, GILBERT Inventor name: FRITSCHE, BERNHARD |
|
17Q | First examination report despatched |
Effective date: 20090206 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20100203 |