EP3697554A1 - Die casting mold for casting cylinder crankcases or crankcase subparts - Google Patents
Die casting mold for casting cylinder crankcases or crankcase subpartsInfo
- Publication number
- EP3697554A1 EP3697554A1 EP18778378.2A EP18778378A EP3697554A1 EP 3697554 A1 EP3697554 A1 EP 3697554A1 EP 18778378 A EP18778378 A EP 18778378A EP 3697554 A1 EP3697554 A1 EP 3697554A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankcase
- cylinder
- mold
- casting
- die
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
-
- 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
- B22D17/24—Accessories for locating and holding cores or inserts
Definitions
- the invention relates to a die-casting mold for casting cylinder crankcases or crankcase bases with a fixed mold part, in which at least partially a sprue system for distributing the melt is formed and movable moldings in which at least partially a cavity for forming a cylinder crankcase or a crankcase lower part is formed.
- Die casting molds for the production of cylinder crankcases or crankcase lower parts are generally known, the die casting method being used above all in the field of light metal casting, in particular of aluminum alloys or magnesium alloys.
- the molds used usually have a one- or two-sided gate on the ⁇ lwannenflansche or the parting surfaces of the cylinder crankcase and the crankcase lower part.
- this has the consequence that in the thick-walled areas often a sufficiently low-pore structure during casting is achieved because the applied pressure on the gate often can not be introduced because the intermediate thinner areas solidify earlier, so additional squeezer are used below the storage chairs in order to produce a sufficiently high pressure in the thick-walled areas.
- DE 10 2006 030 129 B4 proposes a low-pressure casting method in which casting is carried out in a horizontal position and the feeding takes place directly over the bearing block, so that a holding pressure can also be generated at this gate ,
- a disadvantage of this embodiment is that the bearing block area can only be filled on one side, so that structural differences within the bearing block area can not be excluded.
- due to the relatively large explosive area can not be re-pressed with increased pressures.
- an intermediate molding is arranged, which at least partially limits the cavity for forming the cylinder crankcase or the crankcase lower part and in which at least partially the Angusssystem and a plurality of gates are formed, which at the thick-walled areas of the cylinder crankcase or open the crankcase lower part, it is achieved that the thick-walled areas can be supplied directly with melt and the emphasis can be introduced through the thick-walled areas, so that during the entire solidification time, the last solidifying areas can be supplied with melt. Through this connection shrinkage deficits are compensated during the solidification process and thus achieved a low-pore structure in these areas.
- a first parting plane is formed between the fixed mold part and the intermediate mold part
- a second parting plane is formed between the intermediate mold part and the movable side mold parts, which are arranged substantially parallel to a base surface of the cylinder crankcase to be cast or of the crankcase lower part to be cast.
- the sprue can be ejected and ejected between the intermediate molding and the movable mold parts when opening the mold, the cylinder crankcase or the crankcase lower part.
- the die casting mold can be filled on the crankcase side and the gates open on the bearing block of the cylinder crankcase or of the crankcase lower part.
- the filling can be done directly on the loaded and thick-walled bearing block in which a low-pore structure can be achieved.
- the die casting is cylinder top side filled and the gates open in the region of the tie rods of the cylinder crankcase, which can be filled below the water jacket core in the direction of the storage chairs or tie rods, so that here these thick-walled areas through the inner filling with a pore-poor Structure can be produced. So a good structure in the field of loaded tie rods is achieved.
- the die-casting mold is preferably fillable on the cylinder cover side and the gates open in the region of the cylinder walls of the cylinder crankcase, so that improved microstructure can be achieved by the increased pressure to be introduced.
- each bearing block which are arranged on both sides of each bearing shell receptacle of the cylinder crankcase or the crankcase lower part, so that a double-sided filling is made on the bearing block, which leads independently of the casting layer to a uniform structure of the bearing block area.
- a Hauptg jamlauf is formed between the fixed mold part and the intermediate mold part, which extends along the length of the mold parts and from which extend on both sides a plurality of perpendicular to the main runner extending Einzelg screen concept through the intermediate mold part to the cavity.
- a uniform and low-turbulence filling is achieved with constant emphasis. The result is a uniform distribution of the melt and a uniform desserts in the storage chairs.
- the gates are funnel-shaped to the cavity narrowing.
- the conditions in the subsequent outsourcing or during subsequent quenching and heat treatment are improved because the Angusssystem is no longer available and thus no energy can be drawn from this.
- a projected area of the gating system arranged in the intermediate molding part is arranged on the second parting plane between the movable molding part and the intermediate molding part within a projected area of the cavity on this parting plane.
- the Einzelgit tiny diameter which substantially corresponds to the width of the bearing block. Due to this large diameter, the holding pressure from the piston system can act much longer during the solidification phase.
- the die-casting mold according to the invention is thus particularly suitable for producing cylinder crankcases and crankcase lower parts with a high degree of strength, by producing pore-poor microstructures in heavily loaded thick-walled areas without having to use additional squeezers. Higher final pressures are possible due to the reduced explosive area and the amount of circulation material is reduced by the demolding due to the small Angusssystems.
- a die casting mold according to the invention and its use for producing a cylinder crankcase will be explained by way of example with reference to the figures.
- FIG. 1 shows schematically a side view of a die casting mold according to the invention with crank chamber side Angusssystem in the closed state in a sectional view.
- FIG. 2 shows schematically a side view of the die casting mold according to the invention from FIG. 1 in the opened state in a cutaway view.
- FIG. 3 shows schematically the cast cylinder crankcase with the crank chamber side Angusssystem in perspective view.
- FIG. 4 schematically shows a side view of an alternative die casting mold according to the invention with a cylinder-end-side sprue system in the closed state in a cutaway view.
- the die casting mold according to the invention shown in the figures has a fixed molding 10, via which the melt is introduced into the die casting mold.
- This fixed mold part 10 is fixed to a machine plate, not shown, which is connected to a casting chamber and the casting piston for generating the pressure, wherein the casting piston presses the melt through the fixed machine plate and into the fixed mold part 10.
- a main run 12 is formed between the fixed mold 10 and an intermediate mold 14.
- a first parting plane 16 is formed between the intermediate molding 14 and the fixed molding 10, at which the two mold parts 10, 14th resting on each other and pressed together during casting and at the two mold parts 10, 14 are separated from each other after casting.
- the cavity 20 is formed between the intermediate molding 14 and side moldings 29, to which a movable molding 29 connects.
- the movable mold part 28 einschiebbare molds 30 are arranged, which are fixed to the same as the movable mold part 28 on a movable machine plate, not shown.
- a second parting plane 32 of the die casting mold is formed correspondingly, which at the same time forms a base of the cast part to be cast.
- a crank chamber 40 is bounded by the intermediate molding 14, wherein the gates 22 each at thick-walled areas 42 of the cylinder crankcase 34 open, which are formed by bearing blocks 44 of the cylinder crankcase 34 in the present embodiment.
- tie rod cores 46 extend into the cylinder crankcase.
- Each of the four storage chairs 44 is fed via a pair of Einzelgit matter 18 with melt, wherein the gates 22 are each disposed on both sides of bearing shells 48.
- the die passes through the main run 12 and the Einzelgit tone 18 in the cavity 20.
- the melt then begins to solidify in the cavity 20, wherein thin-walled and cooled areas, such as the cylinder 36, which via the molds 30 solidify faster than the thick-walled areas 42.
- thin-walled and cooled areas such as the cylinder 36
- the molds 30 solidify faster than the thick-walled areas 42.
- a shrinkage of the casting begins, which is larger with increasing volume and could normally lead to pore-rich structures or even voids.
- the pressure generated in the die-casting process acts in this embodiment exclusively on a projected surface of the cylinder crankcase 34 and the cavity 20 on the second parting plane 32 between the intermediate molding 14 and the movable side moldings 29, since the entire casting run on the intermediate molding 14 and the projected surface of Angusssystems 26th acts on the base surface or the second parting plane 32 within this projected area. Accordingly, a very high pressure can be introduced or, in comparison to known embodiments, the closing force on the die can be reduced. After solidification, the die is opened at both parting planes. In this case, the Einzelgitit 18 tear off due to the smallest cross-section in the region of the gates 22, so that an entire solidified sprue 50 between the fixed mold part 10 and the intermediate molding 14 is ejected.
- the cylinder crankcase 34 is ejected via ejector 52 after removing the molds 30 from the movable mold part 10 and between the movable mold part 10 and the intermediate mold part 14, so that a clean separation between the casting and sprue 50 takes place.
- FIG. 4 shows an alternative possibility for casting a cylinder crankcase 34.
- the filling does not take place on the crankcase side, but on the cylinder cover side.
- a part of the Angusssystems 26 is formed again, which continues in the intermediate mold part 14.
- This also has eight Einzelgit matter 18, which extend in a plane between the cylinders 36 to a region in which the Glasankerkern 46 are arranged and from there the thick-walled area 42 fill.
- the Einzelg card tone could extend through the cylinder 36 forming parts of the intermediate molding 14 and there fill the thick-walled areas of the storage chairs 44 from the inside over the crank chamber end of the cylinder walls 38 again.
- the cavity 20 is also formed in this embodiment between the intermediate mold part 14, the movable side moldings 29 and the movable mold part 28, wherein the molded part 28 forms the crank chamber 40 and the side moldings 29, the cylinder outer surfaces and the outer surface of the crank chamber 40th Die Zylinderdeckto Intermediate molding 14 is formed.
- the Nachtex and food takes place in these versions directly to the strongest by shrinking loaded thick-walled areas 42 of the cylinder crankcase, so that even here pore-poor microstructure can be achieved. Also the separation of the Casting 50 of the casting is done by simply opening the die.
- Such a die casting mold correspondingly opens up various possibilities for filling and feeding the relevant thick-walled regions of a casting and in particular of a cylinder crankcase, so that low-pore microstructures can be achieved.
- this filling and make-up can be done with high pressures, since the explosive surface of the mold is kept very small by the small sprue system.
- the cross sections of the Einzelg cord concept or the entire Angusssystems can be made relatively large, so that the introduced emphasis can have a long effect. This also leads to improved structures in the relevant areas of the bearing block or tie rods. Since the sprue is also very small, the circulation material is also reduced, which saves energy. In addition, the necessary post-processing is reduced because the sprue automatically disengages from the casting when the mold is opened at the correct position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017124150.7A DE102017124150B4 (en) | 2017-10-17 | 2017-10-17 | Die casting mold for casting cylinder crankcases or crankcase lower parts |
PCT/EP2018/074310 WO2019076536A1 (en) | 2017-10-17 | 2018-09-10 | Die casting mold for casting cylinder crankcases or crankcase subparts |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3697554A1 true EP3697554A1 (en) | 2020-08-26 |
Family
ID=63683836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18778378.2A Pending EP3697554A1 (en) | 2017-10-17 | 2018-09-10 | Die casting mold for casting cylinder crankcases or crankcase subparts |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3697554A1 (en) |
CN (1) | CN111225754B (en) |
DE (1) | DE102017124150B4 (en) |
MX (1) | MX2020003352A (en) |
RU (1) | RU2747340C1 (en) |
WO (1) | WO2019076536A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020108022A1 (en) | 2020-03-24 | 2021-09-30 | Bayerische Motoren Werke Aktiengesellschaft | Three-platen die-casting tool with a sprue system and improved sprue separation and method for die-casting |
DE102020125342B3 (en) | 2020-09-29 | 2021-09-16 | Bayerische Motoren Werke Aktiengesellschaft | Three-platen die-casting tool with improved sprue separation and method for die-casting (II) |
DE102020125343B3 (en) | 2020-09-29 | 2021-09-16 | Bayerische Motoren Werke Aktiengesellschaft | Three-platen die-casting tool with improved sprue separation and method for die-casting (I) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU821053A1 (en) * | 1979-06-25 | 1981-04-15 | Предприятие П/Я Р-6930 | Plant for casting with counter pressure |
SU980949A1 (en) * | 1981-03-27 | 1982-12-15 | Предприятие П/Я Г-6930 | Mould for gaseous pressure die casting |
JPS62238057A (en) * | 1986-04-09 | 1987-10-19 | Honda Motor Co Ltd | Metallic mold casting method |
JPH07108448B2 (en) * | 1989-05-30 | 1995-11-22 | 日産自動車株式会社 | Cylinder block casting equipment |
JPH07108449B2 (en) * | 1989-05-30 | 1995-11-22 | 日産自動車株式会社 | Cylinder block manufacturing method |
JPH04118165A (en) * | 1990-09-07 | 1992-04-20 | Ube Ind Ltd | Method for casting cylinder block |
JPH07100621A (en) * | 1993-09-30 | 1995-04-18 | Suzuki Motor Corp | Metallic mold device for casting and casting method |
ITBS20030068A1 (en) * | 2003-07-07 | 2005-01-08 | Meccanica Bassi S P A | BENCH, SHELL AND PROCESS OF CASTING, IN PARTICULAR FOR MOTOR CYLINDER HEAD. |
DE102005018200A1 (en) * | 2005-04-19 | 2006-11-02 | Honsel Gmbh & Co Kg | Method for casting monoblock cylinder crankcases and die casting plant for carrying out the method |
DE102006030129B4 (en) | 2006-06-28 | 2010-01-07 | Ks Aluminium-Technologie Gmbh | Casting apparatus and casting method for producing a cylinder crankcase |
DE102012107363A1 (en) * | 2011-09-16 | 2013-03-21 | Ksm Castings Group Gmbh | Three-plate die-casting tool with sprue system and sprue system |
CN103100690B (en) * | 2013-01-29 | 2015-05-27 | 宁波市北仑辉旺铸模实业有限公司 | Multi-point feed flow channel structure of vehicle transmission die-casting die |
DE102013105769A1 (en) * | 2013-06-05 | 2014-12-11 | Heck & Becker Gmbh & Co. Kg | Apparatus and method for die casting a crankcase |
CN203495180U (en) * | 2013-08-15 | 2014-03-26 | 江苏徐航科技有限公司 | Main sprue and pouring gate structure for crank case die-casting molding |
NO2756167T3 (en) * | 2014-01-29 | 2018-06-16 | ||
CN204735702U (en) * | 2015-05-29 | 2015-11-04 | 重庆博奥镁铝金属制造有限公司 | Three board die casting die structures of large -scale magnesium alloy parts center multiple feed |
-
2017
- 2017-10-17 DE DE102017124150.7A patent/DE102017124150B4/en active Active
-
2018
- 2018-09-10 CN CN201880067442.4A patent/CN111225754B/en active Active
- 2018-09-10 WO PCT/EP2018/074310 patent/WO2019076536A1/en unknown
- 2018-09-10 EP EP18778378.2A patent/EP3697554A1/en active Pending
- 2018-09-10 MX MX2020003352A patent/MX2020003352A/en unknown
- 2018-09-10 RU RU2020115052A patent/RU2747340C1/en active
Also Published As
Publication number | Publication date |
---|---|
CN111225754B (en) | 2022-05-17 |
WO2019076536A1 (en) | 2019-04-25 |
DE102017124150A1 (en) | 2019-04-18 |
RU2747340C1 (en) | 2021-05-04 |
MX2020003352A (en) | 2020-07-29 |
CN111225754A (en) | 2020-06-02 |
DE102017124150B4 (en) | 2021-01-28 |
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Effective date: 20230602 |