WO2022211136A1 - 鋳造金型 - Google Patents
鋳造金型 Download PDFInfo
- Publication number
- WO2022211136A1 WO2022211136A1 PCT/JP2022/019014 JP2022019014W WO2022211136A1 WO 2022211136 A1 WO2022211136 A1 WO 2022211136A1 JP 2022019014 W JP2022019014 W JP 2022019014W WO 2022211136 A1 WO2022211136 A1 WO 2022211136A1
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- WIPO (PCT)
- Prior art keywords
- core
- mold
- casting
- cavity
- groove
- Prior art date
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- 238000005266 casting Methods 0.000 title claims abstract description 60
- 238000007664 blowing Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 52
- 238000003780 insertion Methods 0.000 claims description 33
- 230000037431 insertion Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000000465 moulding Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- B22D17/22—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/067—Venting means for moulds
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
Definitions
- the present invention relates to a casting mold having a core for forming a cavity in a casting.
- a cavity may be formed in the casting by protruding the core into the cavity of the casting mold.
- the core may have grooves. For example, when multiple cores are placed close together, a narrow gap (groove) is formed between them. Since it is difficult for air to enter deep into the groove, it is not easy to remove the burrs adhering to the deep part of the groove by air blowing.
- Japanese Utility Model Laid-Open No. 60-42447 discloses that a molding pin protruding into a cavity is movable with respect to a mold body, thereby facilitating air blowing between the outer periphery of the molding pin and the mold body.
- the molding pin moves between a retracted position, which is a molding position, and an advanced position, which projects further into the cavity, and is blown with air at the advanced position.
- this technique requires a mechanism for moving the molding pin back and forth, which complicates the configuration of the casting mold.
- An object of the present invention is to provide a casting mold capable of air blowing deep into the groove of the core without moving the core back and forth with respect to the mold body.
- a casting mold according to one aspect of the present invention is capable of relatively approaching and separating from a first mold and the first mold, and creates a cast product between the first mold and the first mold.
- a second mold for forming a cavity for the second mold, the second mold protruding in a first direction toward the first mold from the second mold body and the second mold body;
- a core for forming a cavity in the casting, the core being provided with a groove that opens in the first direction and is recessed in a second direction that is opposite to the first direction.
- the second mold is provided with an air supply channel for supplying blow air toward the bottom of the groove.
- FIG. 1 is a diagram showing a casting apparatus according to an embodiment.
- FIG. 2 is an enlarged view of the movable mold body of the casting mold.
- FIG. 3 is a view showing the cavity side of the movable mold body.
- FIG. 4 is a view showing the side opposite to the cavity portion of the movable mold body.
- 5 is an enlarged view of a part of FIG. 4.
- a casting apparatus 10 and a casting mold 12 according to an embodiment of the present invention will be described below.
- the casting apparatus 10 shown in FIG. 1 includes a casting mold 12.
- the casting mold 12 has a fixed mold 14 and a movable mold 16 that are arranged facing each other in the left-right direction (horizontal direction) of the figure.
- the movable mold 16 moves horizontally so as to be able to approach and separate from the fixed mold 14 .
- Concave portions 18a and 18b that constitute a cavity portion 18 are formed on mating surfaces of the fixed mold 14 and the movable mold 16 that face each other.
- a molten metal supply unit 20 is connected to the casting mold 12 .
- the molten metal supply unit 20 is provided on the fixed mold 14 side and supplies the molten metal into the cavity portion 18 .
- the molten metal supplied to the cavity portion 18 is solidified inside the cavity portion 18, and the solidified molten metal is taken out from the casting mold 12 as a cast product.
- the casting mold 12 includes an ejection pin 22 and an ejection plate 24 for ejecting the casting from the cavity portion 18 .
- the movable mold 16 is formed with a pin insertion hole 26 that communicates the cavity portion 18 with the outside of the movable mold 16 .
- the push pin 22 is inserted through the pin insertion hole 26 .
- One end of the push pin 22 is connected to the push plate 24 .
- the casting mold 12 has a shutoff valve 32 and a suction path 34.
- the shut-off valve 32 is provided between the cavity portion 18 and the suction path 34 to block the suction path 34 and prevent the molten metal from entering the suction path 34 from the cavity portion 18 .
- the suction path 34 is connected to an evacuation section 38 via a switching valve 36 .
- the evacuation section 38 evacuates the inside of the cavity section 18 via the suction path 34 .
- An air supply unit 40 is connected to the switching valve 36 together with the evacuation unit 38 .
- the air supply unit 40 blows air (air blow) into the open casting mold 12 via the switching valve 36 and the suction path 34 to clean the suction path 34, the cutoff valve 32, and the like.
- the switching valve 36 switches the connection of the evacuation section 38 and the air supply section 40 to the suction path 34 .
- the movable mold 16 has a movable mold body 42 , support members 44 and cores 46 .
- a direction from the movable mold 16 to the fixed mold 14 is defined as a first direction A1, and a direction opposite to the first direction A1 is defined as a second direction A2.
- the support member 44 is fixed to the movable mold body 42 with bolts or the like, and supports the movable mold body 42 .
- An internal space 48 that communicates with the pin insertion hole 26 and a suction path 50 that connects the internal space 48 and the switching valve 36 are formed inside the support member 44 .
- the evacuation section 38 evacuates the inside of the pin insertion hole 26 and further the inside of the cavity section 18 via the suction path 50 and the internal space 48 .
- the air supply section 40 supplies air for blowing into the pin insertion hole 26 and further into the cavity section 18 via the suction path 50 and the internal space 48 .
- a cylindrical sealing member C1 for example, a bush is inserted into the pin insertion hole 26 on the outside of the internal space 48 .
- the sealing material C ⁇ b>1 prevents air from flowing into the cavity portion 18 from the outside of the support member 44 through the pin insertion holes 26 .
- FIG. 2 is an enlarged view of the movable mold body 42 of the casting mold 12.
- FIG. FIG. 3 is a view showing the cavity portion 18 side of the movable mold main body 42.
- FIG. 4 is a diagram showing the side of the movable mold body 42 opposite to the cavity portion 18 . Details of the movable mold main body 42 and the core 46 are basically described below with reference to FIG.
- the movable mold body 42 has a first surface 42a facing the fixed mold 14 and a second surface 42b opposite to the first surface 42a.
- a core through-hole 42c is formed in the second surface 42b of the movable mold main body 42 to allow communication between the cavity portion 18 and the second surface 42b side.
- the core 46 protrudes in the first direction A1, is for forming a cavity in a casting (for example, a cylinder block of an engine), and has a first core 52 and a second core 54. .
- the first core 52 is, for example, a bore-forming core for forming a cylinder bore in the cylinder block, and has a columnar shape having a head portion 52a on the cavity portion 18 side and a bottom portion 52b on the side opposite to the cavity portion 18. .
- a gap S ⁇ b>0 is formed between the inner peripheral surface of the core through hole 42 c and the outer peripheral surface of the first core 52 .
- the gap S0 is a very small space that allows passage of gas and prevents passage of liquid. Therefore, the molten metal introduced into the cavity portion 18 during casting flows (reaches) up to the bottom portion D1 of the groove portion D, which will be described later, but does not flow into the gap S0.
- the first core 52 is inserted into the core through-hole 42c of the movable mold body 42, and the end surface of the bottom portion 52b does not protrude from the second surface 42b of the movable mold body 42 (for example, the end surface of the bottom portion 52b is is substantially flush with the second surface 42b).
- the first core 52 is fixed by a bolt B here. That is, the first core 52 is locked by the bolt B fixed to the movable mold main body 42, thereby being prevented from coming off from the movable mold main body 42 in the second direction A2.
- the first core 52 is prevented from coming off in the first direction A1 from the movable mold main body 42 by a retaining portion (not shown).
- a head B ⁇ b>1 of the bolt B is arranged across the movable mold body 42 and the first core 52 . That is, a concave portion R1 is formed in the second surface 42b of the movable mold 16 and a concave portion R2 is formed in the bottom portion 52b of the first core 52 at the periphery of the core through-hole 42c.
- the head B1 of the bolt B is recessed so as not to protrude from the second surface 42b of the movable mold main body 42 (for example, so that the end surface of the head B1 of the bolt B is substantially flush with the second surface 42b). It is housed within R1 and recess R2.
- a cylindrical wear-resistant member M (for example, an iron sleeve) is formed on the outer periphery of the first core 52 to be cast into the cast product to improve the wear resistance of the cast product. may be attached.
- the second core 54 is, for example, a jacket forming core for forming a water jacket.
- a water jacket is provided outside the cylinder bore formed by the first core 52 along the cylinder bore.
- the second core 54 extends along the outer circumference of the first core 52 and has a shape surrounding the first core 52 (see FIG. 3).
- the second core 54 covers at least part of the outer peripheral surface of the first core 52 and forms a groove portion D between itself and the first core 52 .
- the groove portion D is opened in the first direction A1 and recessed in the second direction A2.
- the groove portion D has a shape in which a plurality of cylinders surrounding a plurality (here, four) of the first cores 52 are arranged side by side in the circumferential direction and connected (see FIG. 3).
- the groove portion D does not have to encircle the first core 52 as described above, and may surround at least a portion of the outer peripheral surface of the first core 52 .
- the groove D has a bottom D1.
- a gap D0 is formed between the second core 54 and the outer peripheral surface of the first core 52 on the second direction A2 side of the bottom portion D1.
- the gap D0 is narrower than the groove portion D and, like the gap S0, is a minute space of a size that allows passage of gas and prevents passage of liquid. Therefore, during casting, the molten metal introduced into the cavity portion 18 flows (reaches) up to the bottom portion D1 of the groove portion D, but does not flow into the gap D0 (furthermore, the gap S0).
- the second core 54 is attached to the cavity portion 18 side of the movable mold main body 42 .
- the second core 54 is attached to the movable mold body 42 together with the first core 52 by a plurality of bolts B.
- a shaft portion B ⁇ b>2 (male thread) of the bolt B is screwed into a threaded hole 54 a (female thread) provided in the second core 54 .
- a shaft portion B ⁇ b>2 of the bolt B is inserted through a bolt insertion hole 43 formed in the movable mold main body 42 .
- the second core 54 may be attached to the second surface 42b side of the movable mold main body 42, or may be attached by a fastener other than the bolt B.
- the movable mold 16 is provided with an upper surface flow path 60 for supplying air F for blowing to the groove portion D (the bottom portion D1 thereof).
- the surface channel 60 is formed on the second surface 42 b of the movable mold body 42 and has a peripheral channel 62 , a branch channel 64 , a connecting channel 66 and a suction channel 68 .
- a suction path 70 is formed inside the movable mold 16 to allow the suction path 68 and the pin insertion hole 26 to communicate with each other.
- the peripheral channel 62 is arranged around the bottom 52 b of the first core 52 .
- the peripheral channel 62 is a ring-shaped channel surrounding the bottom portions 52 b of the plurality (here, four) of the first cores 52 .
- the peripheral channel 62 does not necessarily have to be ring-shaped, and may be arranged around the bottom portion 52 b of the first core 52 .
- the branch channel 64 has one end connected to the internal space 48 inside the support member 44 and the other end connected to the peripheral channel 62 .
- One end of the connecting channel 66 is connected to the peripheral channel 62 .
- the other end of the connecting flow path 66 communicates with the gap S ⁇ b>0 formed between the inner peripheral surface of the core through hole 42 c and the outer peripheral surface of the first core 52 . That is, the air F that has flowed into the peripheral channel 62 from the internal space 48 flows into the gap S0 via the peripheral channel 62 and the connecting channel 66 .
- the gap S0 communicates with (the bottom D1 of) the groove D through the gap D0 (see FIG. 2). Therefore, the gap S0 and the gap D0 function as an air introduction path that communicates the connection flow path 66 and the groove portion D and introduces the air F into the groove portion D (bottom portion D1 thereof).
- the head B1 of the bolt B is arranged across the movable mold main body 42 and the first core 52 .
- 5 is an enlarged view of a part of FIG. 4.
- the diameter of the recess R1 on the second surface 42b of the movable mold 16 is made larger than the diameter of the head B1 of the bolt B so that the outer peripheral surface of the head B1 of the bolt B
- a gap S1 is formed with the inner peripheral surface of the recess R1.
- the gap S1 constitutes a part of a connecting channel 66 that communicates (the bottom D1 of) the groove D with the peripheral channel 62 via the gap S0 and the gap D0.
- the flow of the air F is not obstructed by the head B1 of the bolt B, and the air F can be preferably guided to the groove portion D of the core .
- the diameter of the recess R2 on the end surface of the bottom portion 52b of the first core 52 is made larger than the diameter of the head B1 of the bolt B, so that the outer peripheral surface of the head B1 of the bolt B and the interior of the recess R2 A gap S2 may be formed with the peripheral surface to further improve ease of flow of the air F between the connecting flow path 66 and the gap S0.
- the air F from the air supply unit 40 reaches the internal space 48 via the suction path 50 (see FIG. 1), and as shown in FIG. 4), the gap S0, and the gap D0.
- the air F supplied into the groove portion D advances in the first direction A1 in the groove portion D, is blown out (air blow) from the opening of the groove portion D into the cavity portion 18, and flows into the groove portion D, particularly the bottom portion D1 of the groove portion D. It is possible to remove burrs adhering to
- the branch channel 64, the peripheral channel 62, and the connecting channel 66 function as an air supply channel for supplying the blow air F toward the bottom portion D1 of the groove portion D.
- the suction path 68 has one end connected to the peripheral flow path 62 and the other end communicated with the pin insertion hole 26 via the suction path 70 . Since the pin insertion hole 26 communicates with the cavity portion 18 (see FIG. 2), the other end of the suction path 68 (surface upper flow path 60) is connected to the cavity via the suction path 70 and the pin insertion hole 26. It communicates with the portion 18 . As shown in FIG. 2, the air F that has reached the internal space 48 from the air supply unit 40 passes through the upper surface flow path 60 (more specifically, the branch flow path 64, the peripheral flow path 62, and the suction flow path 68 in FIG. 4), The air is blown into the cavity portion 18 via the suction path 70 and the pin insertion hole 26 (air blow).
- the switching valve 36 When the switching valve 36 is operated to connect the evacuation section 38 instead of the air supply section 40 to the suction path 50, evacuation is performed via the path to which the air F was supplied. That is, the vacuum drawing part 38 is provided through the internal space 48, the upper surface channel 60 (more specifically, the branch channel 64, the peripheral channel 62, and the suction channel 68), the suction channel 70, and the pin insertion hole 26. , the cavity 18 can be evacuated.
- the branch channel 64 , the peripheral channel 62 , and the suction channel 68 function as a backing suction channel for vacuuming the inside of the cavity 18 via the pin insertion hole 26 .
- the branch flow path 64 and the peripheral flow path 62 are the air supply flow paths (the branch flow path 64, the peripheral flow path 62, and the connection flow path 66) in addition to the backing suction flow path. ), which is a shared channel (shared channel).
- the inside of the groove portion D can be air-blown through the branch channel 64 , the peripheral channel 62 and the connecting channel 66 .
- the amount of air F flowing into the movable mold 16 from the suction path 50 is defined as an air amount Q.
- the air amount Q can be divided into an air amount Qin flowing into the cavity portion 18 and an air amount Qout flowing out of the cavity portion 18 (outside the movable mold 16). Further, the amount of air Qin that flows into the cavity portion 18 is divided into an amount of air Qin1 that flows in from the pin insertion hole 26 and an amount of air Qin2 that flows in from the groove portion D. As shown in FIG.
- the casting mold (12) is relatively movable to and away from a first mold (fixed mold 14) with respect to the first mold, and between the first mold and the a second mold (movable mold 16) forming a cavity portion (18) for producing a casting
- the second mold includes a second mold body (movable mold body 42) and a core (46) protruding from the second mold body in a first direction (A1) toward the first mold and forming a cavity in the casting; is provided with a groove (D) that opens in the first direction and is recessed in a second direction (A2) opposite to the first direction
- the second mold includes a bottom portion (D1 ) is provided for supplying air for blowing (upper surface flow path 60).
- the core includes a first core (52) and a second core covering at least a part of an outer peripheral surface of the first core and forming the groove between the first core and the first core.
- the second mold body has a core through-hole (42c) through which the first core is inserted, and the air supply channel is the core through-hole (42c);
- An air introduction path (gap S0) is formed between the inner peripheral surface of the hole and the outer peripheral surface of the first core and communicates with the bottom portion of the groove portion.
- the groove of the core can be blown with air using the air introduction path formed between the inner peripheral surface of the core through-hole and the outer peripheral surface of the first core.
- the casting mold includes an ejector pin (22) for ejecting the cast product from the cavity, and the second mold communicates with the cavity and the ejector pin is inserted through the second mold.
- a pin insertion hole (26) and a backing suction path (upper surface flow path 60) communicating with the pin insertion hole for vacuuming the cavity through the pin insertion hole are provided.
- a part of the backing suction path (peripheral edge path 62) also serves as a part of the air supply path. As a result, it is possible to air-blow the groove of the core using part of the backing suction path for vacuuming the cavity.
- the core includes a first core and a second core covering at least a part of an outer peripheral surface of the first core and forming the groove between the first core and the first core.
- the second mold main body has a core through-hole through which the first core is inserted;
- the casting mold has an air introduction passage (connection passage 66) formed between the outer peripheral surface of the core and communicating with the bottom of the groove, and the casting mold is an extrusion for pushing out the casting from the cavity.
- a pin (22) is provided, and the second mold includes a pin insertion hole (26) that communicates with the cavity portion and through which the push pin is inserted, and a pin insertion hole that communicates with the pin insertion hole.
- a backing suction path (surface upper flow path 60) for vacuuming the cavity portion through the insertion hole is provided, and the second mold body has a first surface ( 42a) and a second surface (42b) on the opposite side of the first surface. 62), an air supply branch flow path branching from the shared flow path and communicating with the air introduction path, and a suction branch flow path (suction flow path) branching from the shared flow path and communicating with the pin insertion hole.
- the second mold includes a bolt (B) for fixing the first core to the second mold main body, and the second mold includes a head (B1) of the bolt. is formed, and the space between the outer peripheral surface of the head of the bolt and the inner peripheral surface of the recess (gap S1) constitutes a part of the air supply flow path. ing. As a result, it is possible to prevent the bolt for fixing the first core to the second mold body from interfering with the supply of blow air.
- the core includes a first core and a second core covering at least a part of an outer peripheral surface of the first core and forming the groove between the first core and the first core.
- the casting is a cylinder block of an engine
- the first core is a bore forming core for forming a cylinder bore in the cylinder block
- the second core is the cylinder bore
- a core for forming a jacket for forming a water jacket provided along the cylinder bore on the outside of the cylinder.
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
上記各実施形態から把握しうる発明について、以下に記載する。
Claims (6)
- 第1金型(14)と、
前記第1金型に対して相対的に近接および離間可能であり、前記第1金型との間に鋳造品を作成するためのキャビティ部(18)を形成する第2金型(16)と、を備え、
前記第2金型は、第2金型本体(42)と、前記第2金型本体から前記第1金型に向かう第1方向(A1)に突出し、前記鋳造品に空洞部を形成するための中子(46)と、を有し、
前記中子には、前記第1方向に開口すると共に前記第1方向と逆方向の第2方向(A2)に凹む溝部(D)が設けられており、
前記第2金型には、前記溝部の底部(D1)に向けてブロー用エアを供給するためのエア供給流路(60)が設けられている、鋳造金型(12)。 - 請求項1記載の鋳造金型において、
前記中子は、第1中子(52)と、前記第1中子の外周面の少なくとも一部を覆って前記第1中子との間に前記溝部を形成する第2中子(54)と、を有し、
前記第2金型本体は、前記第1中子が挿通された中子用貫通孔(42c)を有し、
前記エア供給流路は、前記中子用貫通孔の内周面と前記第1中子の外周面との間に形成され前記溝部の前記底部と連通するエア導入路(S0)を有する、鋳造金型。 - 請求項1または2記載の鋳造金型において、
前記鋳造金型は、前記キャビティ部から前記鋳造品を押し出すための押し出しピン(22)を備え、
前記第2金型には、
前記キャビティ部に連通し、前記押し出しピンが挿通されたピン用挿通孔(26)と、
前記ピン用挿通孔に連通し、前記ピン用挿通孔を介して前記キャビティ部を真空引きするための裏引き吸引路(60)と、が設けられ、
前記裏引き吸引路の一部(62)が前記エア供給流路の一部を兼ねている、鋳造金型。 - 請求項1記載の鋳造金型において、
前記中子は、第1中子と、前記第1中子の外周面の少なくとも一部を覆って前記第1中子との間に前記溝部を形成する第2中子と、を有し、
前記第2金型本体は、前記第1中子が挿通された中子用貫通孔を有し、
前記エア供給流路は、前記中子用貫通孔の内周面と前記第1中子の外周面との間に形成され前記溝部の前記底部と連通するエア導入路(66)を有し、
前記鋳造金型は、前記キャビティ部から前記鋳造品を押し出すための押し出しピンを備え、
前記第2金型には、
前記キャビティ部に連通し、前記押し出しピンが挿通されたピン用挿通孔と、
前記ピン用挿通孔に連通し、前記ピン用挿通孔を介して前記キャビティ部を真空引きするための裏引き吸引路と、が設けられ、
前記第2金型本体は、前記第1金型に対向する第1面(42a)と、前記第1面と反対側の第2面(42b)とを有し、
前記第2面に、前記エア供給流路と前記裏引き吸引路とを兼ねる共有流路(62)と、前記共有流路から分岐すると共に前記エア導入路に連通するエア供給用分岐流路と、前記共有流路から分岐すると共に前記ピン用挿通孔に連通する吸引用分岐流路(68)と、が設けられている、鋳造金型。 - 請求項2または4記載の鋳造金型において、
前記第2金型は、前記第1中子を前記第2金型本体に固定するためのボルト(B)を備え、
前記第2金型には、前記ボルトの頭部(B1)が収容される凹部(R1)が形成されており、
前記ボルトの前記頭部の外周面と前記凹部の内周面との間(S1)が、前記エア供給流路の一部を構成している、鋳造金型。 - 請求項1記載の鋳造金型において、
前記中子は、第1中子と、前記第1中子の外周面の少なくとも一部を覆って前記第1中子との間に前記溝部を形成する第2中子と、を有し、
前記鋳造品は、エンジンのシリンダブロックであり、
前記第1中子は、前記シリンダブロック内にシリンダボアを形成するためのボア形成用中子であり、
前記第2中子は、前記シリンダボアの外側に前記シリンダボアに沿って設けられるウォータジャケットを形成するためのジャケット形成用中子である、鋳造金型。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN202280039029.3A CN117580658A (zh) | 2021-03-30 | 2022-04-27 | 铸造模具 |
US18/284,558 US20240189892A1 (en) | 2021-03-30 | 2022-04-27 | Casting mold |
Applications Claiming Priority (2)
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JP2021-057185 | 2021-03-30 | ||
JP2021057185A JP2022154257A (ja) | 2021-03-30 | 2021-03-30 | 鋳造金型 |
Publications (1)
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WO2022211136A1 true WO2022211136A1 (ja) | 2022-10-06 |
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PCT/JP2022/019014 WO2022211136A1 (ja) | 2021-03-30 | 2022-04-27 | 鋳造金型 |
Country Status (4)
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US (1) | US20240189892A1 (ja) |
JP (1) | JP2022154257A (ja) |
CN (1) | CN117580658A (ja) |
WO (1) | WO2022211136A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11309555A (ja) * | 1998-04-27 | 1999-11-09 | Toyota Motor Corp | ダイカスト鋳造方法 |
JP2005324199A (ja) * | 2004-05-12 | 2005-11-24 | Honda Motor Co Ltd | 鋳造ガス抜き金型装置 |
JP2005334938A (ja) * | 2004-05-27 | 2005-12-08 | Aisin Seiki Co Ltd | ダイカスト金型 |
CN109079119A (zh) * | 2018-08-21 | 2018-12-25 | 张文英 | 一种铝制缸体压铸模具局部抽真空结构 |
-
2021
- 2021-03-30 JP JP2021057185A patent/JP2022154257A/ja active Pending
-
2022
- 2022-04-27 US US18/284,558 patent/US20240189892A1/en active Pending
- 2022-04-27 WO PCT/JP2022/019014 patent/WO2022211136A1/ja active Application Filing
- 2022-04-27 CN CN202280039029.3A patent/CN117580658A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11309555A (ja) * | 1998-04-27 | 1999-11-09 | Toyota Motor Corp | ダイカスト鋳造方法 |
JP2005324199A (ja) * | 2004-05-12 | 2005-11-24 | Honda Motor Co Ltd | 鋳造ガス抜き金型装置 |
JP2005334938A (ja) * | 2004-05-27 | 2005-12-08 | Aisin Seiki Co Ltd | ダイカスト金型 |
CN109079119A (zh) * | 2018-08-21 | 2018-12-25 | 张文英 | 一种铝制缸体压铸模具局部抽真空结构 |
Also Published As
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CN117580658A (zh) | 2024-02-20 |
US20240189892A1 (en) | 2024-06-13 |
JP2022154257A (ja) | 2022-10-13 |
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