EP4151336A1 - Die casting tool - Google Patents
Die casting tool Download PDFInfo
- Publication number
- EP4151336A1 EP4151336A1 EP21197908.3A EP21197908A EP4151336A1 EP 4151336 A1 EP4151336 A1 EP 4151336A1 EP 21197908 A EP21197908 A EP 21197908A EP 4151336 A1 EP4151336 A1 EP 4151336A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- casting
- bush
- annular gap
- motor housing
- 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
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Classifications
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- 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
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- 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
- B22D17/002—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure using movable moulds
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- 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
- B22D17/2209—Selection of die materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
Definitions
- the invention relates to a die-casting tool with an insert for the production of a cooled motor housing, preferably an electric motor housing, and the manufacturing method for a cooled motor housing and the use of the die-casting tool for producing a cooled motor housing, containing at least one fixed mold half and at least one movable mold half, with one of the two mold halves has a cylindrically extending annular gap with a central axis, wherein the movably arranged mold half is arranged displaceably parallel to the central axis.
- Cooled motor housings have an outer casing as well as an inner casing, between which a gap is formed running all the way around, which is used for cooling, or in which the cooling medium circulates.
- Die-casting tools are known from the prior art in which parts are inserted for encapsulation.
- the DE 199 43 247 C1 discloses a die casting mold in which an insert part is partially encapsulated.
- the insert is a compact, solid workpiece that is placed in the mold and positioned in the mold with a presser.
- the object of the invention is to develop a die-casting tool and its use for producing a cooled motor housing and a production method in which no further process steps are required for attaching an inner wall in a cooled motor housing or a cooled motor housing can be produced in one process step.
- an insert is arranged in the cylindrically extending annular gap, the insert being designed as a thin-walled bush and one end of the bush protruding into a mold cavity formed by the stationary and movable mold halves and at Casting of the casting material is at least partially surrounded by the casting material in a form-fitting manner.
- the sleeve preferably extends over the entire length of the annular gap.
- the die-casting tool according to the invention for the production of a cooled motor housing preferably an electric motor housing, contains at least one stationary mold half and at least one movable mold half.
- a cooled motor housing has an inner and outer shell between which a gap runs all the way around and in which the cooling medium circulates.
- One of the two mold halves has a cylindrically extending annular gap with a central axis, the movably arranged mold half being arranged to be displaceable parallel to the central axis.
- An insert is arranged in the cylindrically extending annular gap of the mold half, the insert being designed as a bush.
- the sleeve is thin-walled and is used to form the inner casing of a cooled motor housing. One end of the sleeve protrudes into the mold cavity, which is formed by the fixed and movable mold halves and is at least partially surrounded by the casting material in a form-fitting manner when the casting material is cast.
- the sleeve preferably has a chamfer running all the way around the outer diameter.
- the chamfer of the bush rests against a chamfer in one of the mold halves, as a result of which the cylindrical annular gap is sealed. This prevents the casting material from flowing into the annular gap and accumulating on the jacket of the liner.
- the bushing has a thickening of the wall thickness, the thickening preferably forming at least a partially all-round collar. That is, the liner has an increase in wall thickness over a certain length at at least one end.
- the thickening of the wall thickness does not have to extend over the entire circumference, but in a preferred embodiment the thickening of the wall thickness extends over the entire circumference.
- the thickened wall protrudes into the mold cavity arranged on the face side, the mold cavity being formed by the stationary and movable mold half and the thickened wall thickness being at least partially surrounded by the casting material in a form-fitting manner when the casting material is cast.
- the mold cavity arranged on the face side with the protruding wall thickening of the bushing forms the mold cavity for one face side of the motor housing, which is then formed at least as a partially closed face side by the cast material flowing in.
- the can has a partial bottom at least at one end, the partial bottom protruding into the mold cavity.
- the mold cavity arranged on the face side then forms one face side of the motor housing with the protruding partial base of the bush.
- the one-piece, thin-walled bushing is formed from a wall thickening arranged at one end or a partial bottom and a jacket, with a chamfer being arranged in the transition between thickening and jacket or between partial bottom and jacket, the Chamfer is used to seal the cylindrically extending annular gap.
- the preferably metallic, thin-walled sleeve is used to form the inner shell of the motor housing and is at least partially through the Casting around the thickening of the wall thickness or the partial base is positively connected to the remaining part of the motor housing or is cast therein, whereby the motor housing is designed in one piece, it containing two different materials.
- a cast material preferably a light metal alloy such as an aluminum or magnesium alloy and a pressed material, preferably made of a light metal alloy such as an aluminum or magnesium alloy. She has shown that it is particularly preferred if the materials of the cast and pressed material have the same material basis, ie if the cast and pressed material are each made of an aluminum or magnesium alloy.
- the chamfer ensures that no casting material runs into the annular gap or that no casting material sticks to the jacket of the insert or the liner.
- the cylindrically extending annular gap has a bevel running all around at the open end in the mold half.
- the annular gap is preferably arranged in the movable mold half, which facilitates the insertion of the sleeve.
- the chamfer also enables optimal centering of the bush, which has the corresponding chamfer.
- the all-round chamfer on the annular gap corresponds to the chamfer on the bushing and the annular gap is thus tightly sealed and no casting material flows into the annular gap.
- the seal allows for a sufficiently large tolerance between the liner or the wall thickness of the jacket and the width of the annular gap, which on the one hand facilitates insertion and on the other hand allows a certain distortion of the liner during casting and the liner nevertheless remains moldable.
- the optimal sealing via inclined surfaces or chamfers enables an optimal centering of the bush in the annular gap.
- the die-casting tool according to the invention has a mold cavity which is arranged concentrically offset towards the outside towards the annular gap in order to form the housing jacket.
- this mold cavity is used to form the housing shell with the help of slides and formed at least one mold half. This enables the attachment of a rib pattern that meets the requirements or of screw-on stubs or other reinforcements on the housing.
- the mold cavity for forming the housing jacket, the cylindrical annular gap and the bush arranged therein preferably extend over the same length. This means that the inner and outer casing of the cooled motor housing have the same length or ends flush on the opposite end face of the wall thickening or the partial bottom or at the same height.
- the die-casting tool has a plurality of slides. This enables the attachment of a rib pattern that meets the requirements or of screw-on stubs or other reinforcements on the housing.
- a preferred embodiment has been shown to be when the bushing has at least two chamfers running all around, the chamfers being aligned in opposite directions and corresponding to the chamfers in the die-casting tool or in sealing contact with the die-casting tool.
- the liner is optimally centered and sealed in at least two places due to the opposite orientation or the inclination of the chamfers in different directions.
- the partially-bottomed can has ribs on the underside of the partial-bottom to stiffen it.
- the ribs transmit the torque generated by the electric motor to the cast outer shell of the housing. It is advantageous if the ribs are aligned radially outwards at regular intervals from the center.
- the object is also achieved in that the annular gap is sealed with a chamfer on the insert and a corresponding chamfer on the annular gap and remains free of cast material.
- the bush is inserted into the annular gap in one half of the mold in such a way that the thickening of the wall at one end of the bush or the partial bottom protrudes into a mold cavity that forms one side of the motor housing or the shape of the end face of the Motor housing, which is filled with cast material and that forms one end face of the motor housing.
- the casting material preferably flows into the die casting mold via a sprue provided for this purpose, with the sprue adjoining the end face of the motor housing, which is at least partially closed.
- the sleeve is placed in the slidably arranged mold half. This facilitates accessibility and loading of the rifle.
- the cooled motor housing has an inner casing, the inner casing being formed by a cast-in insert, the insert being designed as a thin-walled hollow cylinder.
- the use of the die-casting mold according to the invention serves to produce a cooled motor housing, the cooled motor housing having an inner casing, the inner casing being formed by a cast-in bush, the bush being designed as thin-walled.
- a cooled motor housing according to the invention has an inner and outer casing between which a gap running all around is formed, in which the cooling medium circulates.
- the motor housing according to the invention has two thin-walled, concentrically arranged, cylindrical walls, which each form the inner and outer casing of the housing.
- the sleeve of the motor housing which is used to form the inner casing, consists of a metallic material, preferably aluminum or magnesium or an aluminum or magnesium sheet corresponding to the cast alloy used, as already mentioned above.
- the outer shell is formed by the cast material and is preferably made of a light metal alloy, preferably an aluminum or magnesium alloy.
- the cooled motor housing according to the invention is preferably designed as a light metal composite cast component.
- it also consists of another metallic material, preferably a light metal, which has already been inserted into the die casting tool and is surrounded by the light metal casting material in such a way that the cooled motor housing is designed as a one-piece light metal composite casting.
- the inner and outer jackets extend over the same length.
- the drawings shown show a die-casting tool 1 according to the invention in a sectional view.
- the die-casting tool 1 is used to produce a cooled motor housing 12, a cooled motor housing having an inner wall 13 and an outer wall 17, between which the cooling medium circulates.
- the die-casting tool 1 contains at least one fixed and at least one movable or displaceable mold half 2, 3.
- In one of the two mold halves 2, 3 there is a cylindrically extending annular gap 4 with a central axis X.
- the movable mold half 3 can be displaced parallel to the central axis X arranged.
- An insert 5 is arranged in the annular gap 4 , which is designed as a bush and preferably extends over the entire length of the annular gap 4 .
- the bush 5 has a thickened wall 6 at one end, as shown in 1 shown, on or a partial floor 6, as in 4 shown.
- the wall thickening 6 or the partial base 6 protrudes into the mold cavity 9 .
- the mold cavity 9 arranged on the front side forms the cavity for forming the front side of the motor housing 12 into which the thickened wall thickness 6 or the partial base 6 of the bush protrudes and is thereby at least partially surrounded by the cast material in a form-fitting manner.
- the thickening of the wall thickness 6 of the wall of the bushing preferably runs along the entire circumference.
- a chamfer 7 is arranged in the transition region of the bush 5 between the thickened wall thickness 6 and the jacket 10 of the bush 5 .
- This serves on the one hand for sealing as well as for centering.
- the mold half 3 or the annular gap 4 has a chamfer 8 at the open end, which corresponds to the chamfer 7 on the bush and thereby seals the annular gap 4 in such a way that no casting material flows into the annular gap 4 and on the jacket 10 of the bush 5 attached.
- the all-round chamfers 7, 8 form a cone which serves to center the bush 5.
- the sleeve 5 and the annular gap 4 preferably have chamfers directed in opposite directions. In this embodiment, the two chamfers are arranged on both sides and have a chamfer 7, 8 directed inwards and outwards.
- the mold cavity 11 arranged in the die-casting tool 1 and running concentrically to the annular gap 4 forms the mold for the outer casing of the housing or the outer wall 17 of the motor housing.
- the die-casting tool 1 preferably has slides 15 for removing the cooled motor housing 12 from the mold.
- the sprue 14 of the die casting tool 1 according to the invention is preferably arranged on the side of the mold cavity 9 which forms the end face of the partially closed motor housing 12 .
- FIG 3 shows the finished, cooled motor housing 12 with a sleeve 5 which has a wall thickness thickening 6 for positive connection with the cast material.
- the sleeve 5 forms the inner casing 13 of the motor housing 12 and the outer wall is formed by the casting material.
- FIG. 4 shows the sectional view through a die-casting tool 1 according to the invention with an inserted bush 5, the bush 5 having a partial bottom 6 at one end. This protrudes into the cavity 9, which is formed by the two mold halves 2.3.
- the chamfer 7, which is arranged on the outer circumference of the bush 5, corresponds to the chamfer 8 on the mold half and thereby seals the annular gap 4. This prevents cast material from flowing into the annular gap 4, which prevents cast material from adhering to the jacket 10 of the bushing 5.
- figure 5 shows a detailed section of the can 5 with a partial bottom.
- the sleeve 5 has two peripheral chamfers 7 .
- One is arranged near the lateral surface 10 and the other in the end area of the partial base 6.
- the chamfers 7 run in the opposite direction, as do the corresponding chamfers 8 in the die-casting tool 1.
- end face of the motor housing 12 is partly formed by the partial bottom 6 of the liner and the other part by casting material.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacture Of Motors, Generators (AREA)
- Motor Or Generator Frames (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Druckgusswerkzeug mit Einlegeteil für die Herstellung eines gekühlten Motorengehäuses vorzugsweise eines Elektromotorengehäuses beinhaltend, mindestens eine feststehende Formhälfte und mindestens eine bewegliche Formhälfte, wobei eine der beiden Formhälften einen zylindrisch erstreckenden Ringspalt mit einer Mittelachse aufweist, wobei die beweglich angeordnete Formhälfte parallel zur Mittelachse verschiebbar angeordnet ist, wobei im sich zylindrisch erstreckenden Ringspalt ein Einlegteil angeordnet ist, wobei das Einlegeteil als Büchse ausgebildet ist, wobei das eine Ende der Büchse in einen Formholraum, der durch die feststehende und bewegliche Formhälfte gebildet ist, hineinragt und beim Vergiessen des Gussmaterials zumindest teilweise vom Gussmaterial formschlüssig umgeben wird.Die-casting tool with an insert for the production of a cooled motor housing, preferably containing an electric motor housing, at least one fixed mold half and at least one movable mold half, one of the two mold halves having a cylindrically extending annular gap with a central axis, the movably arranged mold half being arranged displaceably parallel to the central axis, wherein an insert part is arranged in the cylindrically extending annular gap, wherein the insert part is designed as a bush, one end of the bush protruding into a mold cavity which is formed by the fixed and movable mold halves, and when the casting material is cast it is at least partially positively locked by the cast material is surrounded.
Description
Die Erfindung betrifft ein Druckgusswerkzeug mit einem Einlegeteil für die Herstellung eines gekühlten Motorengehäuses vorzugsweise eines Elektromotorengehäuses sowie das Herstellverfahren eines gekühlten Motorengehäuses und die Verwendung des Druckgusswerkzeugs zur Herstellung eines gekühlten Motorengehäuses, beinhaltend mindestens eine feststehende Formhälfte und mindestens eine bewegliche Formhälfte, wobei eine der beiden Formhälften einen zylindrisch erstreckenden Ringspalt mit einer Mittelachse aufweist, wobei die beweglich angeordnete Formhälfte parallel zur Mittelachse verschiebbar angeordnet ist.The invention relates to a die-casting tool with an insert for the production of a cooled motor housing, preferably an electric motor housing, and the manufacturing method for a cooled motor housing and the use of the die-casting tool for producing a cooled motor housing, containing at least one fixed mold half and at least one movable mold half, with one of the two mold halves has a cylindrically extending annular gap with a central axis, wherein the movably arranged mold half is arranged displaceably parallel to the central axis.
Gekühlte Motorengehäuse weisen einen Aussenmantel wie auch einen Innenmantel auf zwischen denen ein ringsum verlaufender Spalt gebildet ist, der der Kühlung dient, bzw. darin das Kühlmedium zirkuliert.Cooled motor housings have an outer casing as well as an inner casing, between which a gap is formed running all the way around, which is used for cooling, or in which the cooling medium circulates.
Aus dem Stand der Technik sind Druckgusswerkzeuge bekannt bei denen Teile zum Umgiessen eingelegt werden.Die-casting tools are known from the prior art in which parts are inserted for encapsulation.
Die
In der
Der Nachteil am Stand der Technik besteht darin, dass nur massive Teile eingegossen werden können, es ist nicht bekannt ein gekühltes Motorengehäuse im Druckgussverfahren herzustellen bzw. es sind keine solche Druckgusswerkzeuge bekannt, die die Herstellung von dünnwandigen, konzentrisch verlaufenden Wandungen ermöglichen ohne einen weiteren Prozessschritt nach dem Giessen anzuwenden.The disadvantage of the prior art is that only solid parts can be cast, it is not known to produce a cooled motor housing using the die-casting process or there are no such die-casting tools known that enable the production of thin-walled, concentric walls without a further process step apply after pouring.
Es ist Aufgabe der Erfindung ein Druckgusswerkzeug zu entwickeln sowie dessen Anwendung zur Herstellung eines gekühlten Motorengehäuses sowie ein Herstellverfahren bei dem keine weiteren Verfahrensschritte zur Anbringung einer Innenwand in einem gekühlten Motorengehäuse benötigt werden bzw. ein gekühltes Motorengehäuse in einem Verfahrensschritt hergestellt werden kann.The object of the invention is to develop a die-casting tool and its use for producing a cooled motor housing and a production method in which no further process steps are required for attaching an inner wall in a cooled motor housing or a cooled motor housing can be produced in one process step.
Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass im sich zylindrisch erstreckenden Ringspalt ein Einlegeteil angeordnet ist, wobei das Einlegeteil als dünnwandige Büchse ausgebildet ist und wobei das eine Ende der Büchse in einen Formhohlraum, der durch die feststehende und bewegliche Formhälfte gebildet ist, hineinragt und beim Vergiessen des Gussmaterials zumindest teilweise vom Gussmaterial formschlüssig umgeben wird. Die Büchse erstreckt sich vorzugsweise über die komplette Länge des Ringspalts.This object is achieved according to the invention in that an insert is arranged in the cylindrically extending annular gap, the insert being designed as a thin-walled bush and one end of the bush protruding into a mold cavity formed by the stationary and movable mold halves and at Casting of the casting material is at least partially surrounded by the casting material in a form-fitting manner. The sleeve preferably extends over the entire length of the annular gap.
Das erfindungsgemässe Druckgusswerkzeug für die Herstellung eines gekühlten Motorengehäuses, vorzugsweise eines Elektromotorengehäuses, beinhaltet mindestens eine feststehende Formhälfte und mindestens eine bewegliche Formhälfte.The die-casting tool according to the invention for the production of a cooled motor housing, preferably an electric motor housing, contains at least one stationary mold half and at least one movable mold half.
Ein gekühltes Motorengehäuse weist einen Innen- und Aussenmantel auf zwischen denen sich ein ringsum verlaufender Spalt bildet in dem das Kühlmedium zirkuliert. Mit Hilfe des erfindungsgemässen Druckgusswerkzeugs wird die Herstellung eines solchen Gehäuses mit zwei dünnwandigen, konzentrisch angeordneten, zylinderförmigen Wandungen ermöglicht.A cooled motor housing has an inner and outer shell between which a gap runs all the way around and in which the cooling medium circulates. With the aid of the die-casting tool according to the invention, it is possible to produce such a housing with two thin-walled, concentrically arranged, cylindrical walls.
Einer der beiden Formhälften weist einen sich zylindrisch erstreckenden Ringspalt mit einer Mittelachse auf, wobei die beweglich angeordnete Formhälfte parallel zur Mittelachse verschiebbar angeordnet ist. Im sich zylindrisch erstreckenden Ringspalt der Formhälfte, ist ein Einlegeteil angeordnet, wobei das Einlegeteil als Büchse ausgebildet ist. Die Büchse ist dünnwandig ausgebildet und dient dem Bilden des Innenmantels eines gekühlten Motorengehäuses. Das eine Ende der Büchse ragt in den Formhohlraum hinein, der durch die feststehende und bewegliche Formhälfte gebildet ist, und beim Vergiessen des Gussmaterials zumindest teilweise vom Gussmaterial formschlüssig umgeben ist.One of the two mold halves has a cylindrically extending annular gap with a central axis, the movably arranged mold half being arranged to be displaceable parallel to the central axis. An insert is arranged in the cylindrically extending annular gap of the mold half, the insert being designed as a bush. The sleeve is thin-walled and is used to form the inner casing of a cooled motor housing. One end of the sleeve protrudes into the mold cavity, which is formed by the fixed and movable mold halves and is at least partially surrounded by the casting material in a form-fitting manner when the casting material is cast.
Die Büchse weist vorzugsweise eine am Aussendurchmesser rundum verlaufende Fase auf. Die Fase der Büchse liegt an einer Fase in einer der Formhälften an, wodurch der zylindrisch verlaufende Ringspalt abgedichtet wird. Dadurch wird vermieden, dass Gussmaterial in den Ringspalt fliesst und sich am Mantel der Büchse anordnet.The sleeve preferably has a chamfer running all the way around the outer diameter. The chamfer of the bush rests against a chamfer in one of the mold halves, as a result of which the cylindrical annular gap is sealed. This prevents the casting material from flowing into the annular gap and accumulating on the jacket of the liner.
Die Büchse weist mindestens an einem Ende eine Verdickung der Wandstärke auf, wobei die Verdickung vorzugsweise zumindest einen teilweise rundum verlaufenden Kragen bildet. Das heisst, die Büchse weist an mindestens einem Ende eine Zunahme der Wandstärke über eine bestimmte Länge auf. Die Verdickung der Wandstärke muss sich nicht über den kompletten Umfang erstecken, jedoch in einer bevorzugten Ausgestaltung erstreckt sich die Wandstärkenverdickung über den kompletten Umfang. Die Wandstärkenverdickung ragt in den stirnseitig angeordneten Formhohlraum hinein, wobei der Formhohlraum durch die feststehende und bewegliche Formhälfte gebildet wird und die Wandstärkenverdickung beim Vergiessen des Gussmaterials zumindest teilweise vom Gussmaterial formschlüssig umgeben wird. Der stirnseitig angeordnete Formhohlraum mit der hineinragenden Wandstärkenverdickung der Büchse bildet den Formhohlraum für die eine Stirnseite des Motorengehäuses, die durch das hineinfliessende Gussmaterial dann zumindest als teilweise geschlossene Stirnseite ausgebildet ist. Oder die Büchse weist mindestens an einem Ende einen partiellen Boden auf, wobei der partielle Boden in den Formhohlraum hineinragt. Auch hier bildet dann der stirnseitig angeordnete Formhohlraum mit dem hineinragenden partiellen Boden der Büchse die eine Stirnseite des Motorengehäuses.At least at one end, the bushing has a thickening of the wall thickness, the thickening preferably forming at least a partially all-round collar. That is, the liner has an increase in wall thickness over a certain length at at least one end. The thickening of the wall thickness does not have to extend over the entire circumference, but in a preferred embodiment the thickening of the wall thickness extends over the entire circumference. The thickened wall protrudes into the mold cavity arranged on the face side, the mold cavity being formed by the stationary and movable mold half and the thickened wall thickness being at least partially surrounded by the casting material in a form-fitting manner when the casting material is cast. The mold cavity arranged on the face side with the protruding wall thickening of the bushing forms the mold cavity for one face side of the motor housing, which is then formed at least as a partially closed face side by the cast material flowing in. Or the can has a partial bottom at least at one end, the partial bottom protruding into the mold cavity. Here, too, the mold cavity arranged on the face side then forms one face side of the motor housing with the protruding partial base of the bush.
Als vorteilhaft hat sich gezeigt, wenn die einteilige, dünnwandige Büchse, aus einer an einem Ende angeordneten Wandstärkenverdickung oder einem partiellen Boden und einem Mantel gebildet ist, wobei im Übergang zwischen Verdickung und Mantel oder zwischen partiellem Boden und Mantel eine Fase angeordnet ist, wobei die Fase der Abdichtung des zylindrisch erstreckenden Ringspalts dient.It has been shown to be advantageous if the one-piece, thin-walled bushing is formed from a wall thickening arranged at one end or a partial bottom and a jacket, with a chamfer being arranged in the transition between thickening and jacket or between partial bottom and jacket, the Chamfer is used to seal the cylindrically extending annular gap.
Die vorzugsweise metallische, dünnwandige Büchse dient der Bildung des Innenmantels des Motorengehäuses und wird durch das zumindest teilweise Umgiessen der Wandstärkenverdickung oder des partiellen Bodens formschlüssig mit dem restlichen Teil des Motorengehäuses verbunden bzw. darin eingegossen, wodurch das Motorengehäuse einteilig ausgebildet ist, wobei es zwei unterschiedliche Materialien enthält. Einerseits ein Gussmaterial, vorzugsweise eine Leichtmetalllegierung wie beispielsweise eine Aluminium- oder Magnesiumlegierung und ein Pressmaterial, vorzugsweise aus einer Leichtmetalllegierung wie beispielsweise eine Aluminium- oder Magnesiumlegierung. Als besonders bevorzugt hat sie gezeigt, wenn die Werkstoffe des Guss- und Pressmaterials dieselbe Werkstoffbasis haben, das heisst, wenn das Guss- und Pressmaterial jeweils aus einer Aluminium- oder Magnesiumlegierung hergestellt sind. Die Fase gewährleistet, dass kein Gussmaterial in den Ringspalt läuft bzw. kein Gussmaterial am Mantel des Einlegeteils bzw. der Büchse anhaftet.The preferably metallic, thin-walled sleeve is used to form the inner shell of the motor housing and is at least partially through the Casting around the thickening of the wall thickness or the partial base is positively connected to the remaining part of the motor housing or is cast therein, whereby the motor housing is designed in one piece, it containing two different materials. On the one hand a cast material, preferably a light metal alloy such as an aluminum or magnesium alloy and a pressed material, preferably made of a light metal alloy such as an aluminum or magnesium alloy. She has shown that it is particularly preferred if the materials of the cast and pressed material have the same material basis, ie if the cast and pressed material are each made of an aluminum or magnesium alloy. The chamfer ensures that no casting material runs into the annular gap or that no casting material sticks to the jacket of the insert or the liner.
Gemäss einer bevorzugten Ausführungsform hat sich gezeigt, wenn der sich zylindrisch erstreckende Ringspalt am offenen Ende in der Formhälfte eine rundum verlaufende Fase aufweist. Der Ringspalt ist vorzugsweise in der bewegbaren Formhälfte angeordnet, was das Einlegen der Büchse erleichtert. Die Fase ermöglicht neben der Dichtfunktion auch eine optimale Zentrierung der Büchse, welches die korrespondierende Fase aufweist.According to a preferred embodiment, it has been shown that the cylindrically extending annular gap has a bevel running all around at the open end in the mold half. The annular gap is preferably arranged in the movable mold half, which facilitates the insertion of the sleeve. In addition to the sealing function, the chamfer also enables optimal centering of the bush, which has the corresponding chamfer.
Es ist vorteilhaft, wenn die rundumlaufende Fase am Ringspalt, mit der Fase an der Büchse korrespondiert und dadurch der Ringspalt dicht abgeschlossen ist und kein Gussmaterial in den Ringspalt fliesst. Durch die Abdichtung kann eine genügend grosse Toleranz zwischen der Büchse bzw. der Wandstärke des Mantels und der Ringspaltbreite vorgesehen werden, was einerseits das Einlegen erleichtert und andererseits beim Vergiessen einen gewissen Verzug der Büchse zugesteht und die Büchse dennoch ausformbar bleibt. Zudem ermöglicht die optimale Abdichtung über schräg angeordnete Flächen bzw. Fasen eine optimale Zentrierung der Büchse im Ringspalt.It is advantageous if the all-round chamfer on the annular gap corresponds to the chamfer on the bushing and the annular gap is thus tightly sealed and no casting material flows into the annular gap. The seal allows for a sufficiently large tolerance between the liner or the wall thickness of the jacket and the width of the annular gap, which on the one hand facilitates insertion and on the other hand allows a certain distortion of the liner during casting and the liner nevertheless remains moldable. In addition, the optimal sealing via inclined surfaces or chamfers enables an optimal centering of the bush in the annular gap.
Es hat sich als vorteilhaft gezeigt, wenn das erfindungsgemässe Druckgusswerkzeug zur Bildung des Gehäusemantels einen nach aussen hin zum Ringspalt konzentrisch versetzt angeordneten Formhohlraum aufweist. Vorzugsweise wird dieser Formhohlraum zur Bildung des Gehäusemantels mit Hilfe von Schiebern und mindestens einer Formhälfte gebildet. Dies ermöglicht das Anbringen eines anforderungsgerechten Rippenbildes oder von Anschraubbutzen oder sonstigen Verstärkungen am Gehäuse.It has proven to be advantageous if the die-casting tool according to the invention has a mold cavity which is arranged concentrically offset towards the outside towards the annular gap in order to form the housing jacket. Preferably, this mold cavity is used to form the housing shell with the help of slides and formed at least one mold half. This enables the attachment of a rib pattern that meets the requirements or of screw-on stubs or other reinforcements on the housing.
Vorzugsweise erstreckt sich der Formhohlraum zur Bildung des Gehäusemantels, der zylindrische Ringspalt und die darin angeordnete Büchse über dieselbe Länge. Das heisst, der Innen- und Aussenmantel des gekühlten Motorengehäuses weisen dieselbe Länge auf bzw. Enden auf der gegenüberliegenden Stirnseite der Wandstärkenverdickung oder des partiellen Bodens bündig bzw. auf derselben Höhe.The mold cavity for forming the housing jacket, the cylindrical annular gap and the bush arranged therein preferably extend over the same length. This means that the inner and outer casing of the cooled motor housing have the same length or ends flush on the opposite end face of the wall thickening or the partial bottom or at the same height.
Als bevorzugte Ausführungsform hat sich auch gezeigt, wenn das Druckgusswerkzeug mehrere Schieber aufweist. Dies ermöglicht das Anbringen eines anforderungsgerechten Rippenbildes oder von Anschraubbutzen oder sonstigen Verstärkungen am Gehäuse.It has also been shown to be a preferred embodiment if the die-casting tool has a plurality of slides. This enables the attachment of a rib pattern that meets the requirements or of screw-on stubs or other reinforcements on the housing.
Als bevorzugte Ausführungsform hat sich gezeigt, wenn die Büchse mindesten zwei rundum verlaufende Fasen aufweist, wobei die Fasen gegengleich ausgerichtet sind und mit den Fasen im Druckgusswerkzeug korrespondieren bzw. am Druckgusswerkzeug dichtend anliegen. Durch die gegengleiche Ausrichtung bzw. die Neigung der Fasen in die unterschiedlichen Richtungen wird die Büchse optimal zentriert und an mindestens zwei Stellen abgedichtet.A preferred embodiment has been shown to be when the bushing has at least two chamfers running all around, the chamfers being aligned in opposite directions and corresponding to the chamfers in the die-casting tool or in sealing contact with the die-casting tool. The liner is optimally centered and sealed in at least two places due to the opposite orientation or the inclination of the chamfers in different directions.
Vorzugsweise weist die Büchse mit partiellem Boden an der Unterseite des partiellen Bodens Rippen zu dessen Versteifung auf. Zudem übertragen die Rippen, das durch den Elektromotor entstehende Drehmoment, auf den gegossenen Aussenmantel des Gehäuses. Es ist vorteilhaft, wenn die Rippen in regelmässigen Abständen vom Zentrum her radial nach aussen ausgerichtet sind.Preferably, the partially-bottomed can has ribs on the underside of the partial-bottom to stiffen it. In addition, the ribs transmit the torque generated by the electric motor to the cast outer shell of the housing. It is advantageous if the ribs are aligned radially outwards at regular intervals from the center.
Die Aufgabe wird ebenso dadurch gelöst, dass der Ringspalt mit einer Fase am Einlegeteil und einer korrespondierenden Fase am Ringspalt abgedichtet wird und gussmaterialfrei bleibt.The object is also achieved in that the annular gap is sealed with a chamfer on the insert and a corresponding chamfer on the annular gap and remains free of cast material.
Das erfindungsgemässe Verfahren zur Herstellung eines gekühlten Motorengehäuses vorzugsweise Elektromotorengehäuse aus Leichtmetallverbundguss beinhaltend folgende Schritte:
- Bereitstellen einer Druckgussform, vorzugsweise aus mindestens zwei Formhälften, mit einer in eine Formhälfte des Druckgusswerkzeugs in einen Ringspalt eingelegten Büchse, wobei die eine Formhälfte bewegbar angeordnet ist,
- Verschliessen des Druckgusswerkzeugs, vorzugsweise durch verschieben einer Formhälfte parallel zur Mittelachse X des Ringspalts,
- Füllen des Druckgusswerkzeugs mit einer Leichtmetalllegierung, wobei die Wandstärkenverdickung oder der partielle Boden der Büchse zumindest teilweise formschlüssig vom Gussmaterial umgeben wird. Wobei der Ringspalt über eine Fase an der Büchse mit einer korrespondierenden Fase am Ringspalt abgedichtet wird und gussmaterialfrei bleibt.
- Providing a die-casting mold, preferably consisting of at least two mold halves, with a bush placed in an annular gap in one mold half of the die-casting tool, with one mold half being movably arranged,
- Closing the die-casting tool, preferably by moving one half of the mold parallel to the central axis X of the annular gap,
- Filling the die-casting tool with a light metal alloy, with the thickening of the wall thickness or the partial base of the bush being at least partially surrounded by the casting material in a form-fitting manner. The annular gap is sealed by a chamfer on the bush with a corresponding chamfer on the annular gap and remains free of cast material.
Es ist vorteilhaft, wenn in die eine Formhälfte die Büchse derart in den Ringspalt eingelegt wird, dass die am einen Ende der Büchse angeordnete Wandstärkenverdickung oder der partielle Boden in einen Formhohlraum ragt, der die eine Seite des Motorengehäuses bildet bzw. die Form der Stirnseite des Motorengehäuses, welche mit Gussmaterial gefüllt wird und dass die eine Stirnseite des Motorengehäuses bildet.It is advantageous if the bush is inserted into the annular gap in one half of the mold in such a way that the thickening of the wall at one end of the bush or the partial bottom protrudes into a mold cavity that forms one side of the motor housing or the shape of the end face of the Motor housing, which is filled with cast material and that forms one end face of the motor housing.
Vorzugsweise strömt das Gussmaterial über einen dafür vorgesehenen Anguss in die Druckgussform, wobei der Anguss an die Stirnseite des Motorengehäuses anschliessest, die zumindest teilweise geschlossen ist.The casting material preferably flows into the die casting mold via a sprue provided for this purpose, with the sprue adjoining the end face of the motor housing, which is at least partially closed.
Es ist vorteilhaft, wenn die Büchse in die verschiebbar angeordnete Formhälfte eingelegt wird. Dies erleichtert die Zugänglichkeit und das Einlegen der Büchse.It is advantageous if the sleeve is placed in the slidably arranged mold half. This facilitates accessibility and loading of the rifle.
Die Aufgabe wird auch dadurch gelöst, dass das gekühlte Motorengehäuse einen Innenmantel aufweist, wobei der Innenmantel durch ein eingegossenes Einlegeteil gebildet wird, wobei das Einlegeteil als dünnwandiger Hohlzylinder ausgebildet ist. Die erfindungsgemässe Verwendung der Druckgussform dient der Herstellung eines gekühlten Motorengehäuses, wobei das gekühlte Motorengehäuse einen Innenmantel aufweist, wobei der Innenmantel durch eine eingegossene Büchse gebildet ist, wobei die Büchse als dünnwandig ausgebildet ist.The object is also achieved in that the cooled motor housing has an inner casing, the inner casing being formed by a cast-in insert, the insert being designed as a thin-walled hollow cylinder. The use of the die-casting mold according to the invention serves to produce a cooled motor housing, the cooled motor housing having an inner casing, the inner casing being formed by a cast-in bush, the bush being designed as thin-walled.
Ein erfindungsgemässes gekühltes Motorengehäuse weist einen Innen- und Aussenmantel auf zwischen denen sich ein ringsum verlaufender Spalt bildet in dem das Kühlmedium zirkuliert. Das erfindungsgemässe Motorengehäuse weist zwei dünnwandige, konzentrisch angeordnete, zylinderförmige Wandungen auf, die jeweils den Innen- und Aussenmantel des Gehäuses bilden.A cooled motor housing according to the invention has an inner and outer casing between which a gap running all around is formed, in which the cooling medium circulates. The motor housing according to the invention has two thin-walled, concentrically arranged, cylindrical walls, which each form the inner and outer casing of the housing.
Es ist vorteilhaft, wenn die Büchse des Motorengehäuses, welches zur Bildung des Innenmantels dient aus einem metallischen Werkstoff besteht, vorzugsweise Aluminium oder Magnesium bzw. einem Aluminium- oder Magnesiumblech korrespondierend mit der verwendeten Gusslegierung, wie bereits oben erwähnt. Der Aussenmantel wird durch das Gussmaterial gebildet und ist vorzugsweise aus einer Leichtmetalllegierung, vorzugsweise eine Aluminium- oder Magnesiumlegierung.It is advantageous if the sleeve of the motor housing, which is used to form the inner casing, consists of a metallic material, preferably aluminum or magnesium or an aluminum or magnesium sheet corresponding to the cast alloy used, as already mentioned above. The outer shell is formed by the cast material and is preferably made of a light metal alloy, preferably an aluminum or magnesium alloy.
Das erfindungsgemässe gekühlte Motorengehäuse ist vorzugsweise als ein Leichtmetallverbundgussbauteil ausgebildet. Es besteht also neben dem Leichtmetallgussmaterial auch aus einem weiteren metallischen Material vorzugsweise einem Leichtmetall, das bereits in das Druckgusswerkzeug eingelegt wurde und vom Leichtmetallgussmaterial derart umschlossen wird, dass das gekühlte Motorengehäuse als einteiliges Leichtmetallverbundgussteil ausgebildet ist.The cooled motor housing according to the invention is preferably designed as a light metal composite cast component. In addition to the light metal casting material, it also consists of another metallic material, preferably a light metal, which has already been inserted into the die casting tool and is surrounded by the light metal casting material in such a way that the cooled motor housing is designed as a one-piece light metal composite casting.
Des Weiteren ist es von Vorteil, wenn sich der Innen- und Aussenmantel über dieselbe Länge erstrecken.Furthermore, it is advantageous if the inner and outer jackets extend over the same length.
Alle Ausgestaltungmöglichkeiten sind untereinander frei kombinierbar, sowohl die Merkmale des Druckgusswerkzeugs, des Verfahrens wie auch der Verwendung zur Herstellung zum gekühlten Motorengehäuse.All design options can be freely combined with each other, both the features of the die-casting tool, the method and the use for producing the cooled motor housing.
Ein Ausführungsbeispiel der Erfindung wird anhand der Figuren beschrieben, wobei sich die Erfindung nicht nur auf das Ausführungsbeispiel beschränkt. Es zeigen:
- Fig. 1
- eine Ansicht eines erfindungsgemässen Druckgusswerkzeugs im Längsschnitt mit einer Büchse mit Wandstärkenverdickung,
- Fig. 2
- eine Detailansicht der Wandstärkenverdickung der Büchse eingegossen,
- Fig. 3
- einen Längsschnitt durch ein erfindungsgemässes gekühltes Motorengehäuse mit einer Büchse mit Wandstärkenverdickung,
- Fig. 4
- eine Ansicht eines erfindungsgemässen Druckgusswerkzeugs im Längsschnitt mit einer Büchse mit partiellem Boden,
- Fig. 5
- eine Detailansicht der Büchse mit partiellem Boden eingegossen und
- Fig. 6
- einen Längsschnitt durch ein erfindungsgemässes gekühltes Motorengehäuse mit einer Büchse mit partiellem Boden.
- 1
- a view of a die-casting tool according to the invention in longitudinal section with a bushing with a thickened wall,
- 2
- cast a detailed view of the thickening of the wall thickness of the bush,
- 3
- a longitudinal section through a cooled engine housing according to the invention with a bush with thickened wall thickness,
- 4
- a view of a die-casting tool according to the invention in longitudinal section with a bushing with a partial bottom,
- figure 5
- a detailed view of the rifle with a partial bottom cast in and
- 6
- a longitudinal section through an inventive cooled motor housing with a sleeve with a partial bottom.
Die in
Aus der Detailansicht in
Der im Druckgusswerkzeug 1 angeordnete, konzentrisch zum Ringspalt 4 verlaufende, Formhohlraum 11 bildet die Form für den Gehäuseaussenmantel bzw. die äussere Wandung 17 des Motorengehäuses. Zur Entformung des gekühlten Motorengehäuses 12 weist das Druckgusswerkzeug 1 vorzugsweise Schieber 15 auf. Der Anguss 14 des erfindungsgemässen Druckgusswerkzeugs 1 ist vorzugsweise auf der Seite des Formhohlraums 9 angeordnet, welcher die Stirnseite des teileweise geschlossenen Motorengehäuses 12 bildet.The
In
- 11
- Druckgusswerkzeugdie casting tool
- 22
- Formhälftemold half
- 33
- Formhälfte, beweglich, verschiebbarMold half, moveable, displaceable
- 44
- Ringspaltannular gap
- 55
- Büchserifle
- 66
- Wandstärkenverdickung / partieller BodenWall thickening / partial bottom
- 77
- Fase Büchsechamfer bush
- 88th
- Fase RingspaltChamfer annular gap
- 99
- Formhohlraummold cavity
- 1010
- Mantel BüchseCoat rifle
- 1111
- Formhohlraum für Gehäusemantel aussenForm cavity for housing jacket outside
- 1212
- Gekühltes MotorengehäuseCooled motor housing
- 1313
- Innenmantel / innere WandungInner jacket / inner wall
- 1414
- Angusssprue
- 1515
- Schieberslider
- 1616
- Rippenribs
- 1717
- Äussere Wandung / GehäusemantelOuter wall / casing
- 1818
- Stirnseite MotorengehäuseFront side of motor housing
Claims (15)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP21197908.3A EP4151336A1 (en) | 2021-09-21 | 2021-09-21 | Die casting tool |
MX2022011438A MX2022011438A (en) | 2021-09-21 | 2022-09-14 | Diecasting tool. |
US17/947,180 US11883878B2 (en) | 2021-09-21 | 2022-09-19 | Diecasting tool |
CN202211149511.0A CN115837458A (en) | 2021-09-21 | 2022-09-21 | Die casting tool |
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EP21197908.3A EP4151336A1 (en) | 2021-09-21 | 2021-09-21 | Die casting tool |
Publications (1)
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EP4151336A1 true EP4151336A1 (en) | 2023-03-22 |
Family
ID=77864467
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EP21197908.3A Pending EP4151336A1 (en) | 2021-09-21 | 2021-09-21 | Die casting tool |
Country Status (4)
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US (1) | US11883878B2 (en) |
EP (1) | EP4151336A1 (en) |
CN (1) | CN115837458A (en) |
MX (1) | MX2022011438A (en) |
Citations (7)
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CA999116A (en) * | 1973-03-26 | 1976-11-02 | James H. Koch | Process for producing coated die castings |
JPH08312447A (en) * | 1995-05-11 | 1996-11-26 | Suzuki Motor Corp | Cylinder block of engine and its manufacture |
DE19943247C1 (en) | 1999-09-10 | 2001-01-25 | Daimler Chrysler Ag | Die-casting mold containing an insert part for producing light metal die cast parts used in engine and gearing construction comprises a fixed mold part and a moving mold part, and a receiver for the insert part and an ejector |
DE10054330A1 (en) | 2000-11-02 | 2002-05-08 | Bosch Gmbh Robert | Cast-sheet metal composite body and method for its production |
DE102010051356A1 (en) * | 2010-11-13 | 2012-05-16 | Volkswagen Ag | Preparing insert part for generating cavity in cast component, by forming salt layer using metallic mold element and salt core of insert part, subjecting metallic mold element to forming force, and deforming and/or compressing salt layer |
KR101365196B1 (en) * | 2013-11-04 | 2014-02-19 | 주식회사 디알액시온 | Manufacturing mold of a hollow cylindrical casting |
US20160256921A1 (en) * | 2015-03-02 | 2016-09-08 | Ford Global Technologies, Llc | Process and tool for forming a vehicle component |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3865641A (en) | 1972-01-14 | 1975-02-11 | Lake Chemical Co | Compositions for use in soldering stainless steels |
JP4747754B2 (en) * | 2005-09-16 | 2011-08-17 | 日本電産株式会社 | motor |
-
2021
- 2021-09-21 EP EP21197908.3A patent/EP4151336A1/en active Pending
-
2022
- 2022-09-14 MX MX2022011438A patent/MX2022011438A/en unknown
- 2022-09-19 US US17/947,180 patent/US11883878B2/en active Active
- 2022-09-21 CN CN202211149511.0A patent/CN115837458A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA999116A (en) * | 1973-03-26 | 1976-11-02 | James H. Koch | Process for producing coated die castings |
JPH08312447A (en) * | 1995-05-11 | 1996-11-26 | Suzuki Motor Corp | Cylinder block of engine and its manufacture |
DE19943247C1 (en) | 1999-09-10 | 2001-01-25 | Daimler Chrysler Ag | Die-casting mold containing an insert part for producing light metal die cast parts used in engine and gearing construction comprises a fixed mold part and a moving mold part, and a receiver for the insert part and an ejector |
DE10054330A1 (en) | 2000-11-02 | 2002-05-08 | Bosch Gmbh Robert | Cast-sheet metal composite body and method for its production |
DE102010051356A1 (en) * | 2010-11-13 | 2012-05-16 | Volkswagen Ag | Preparing insert part for generating cavity in cast component, by forming salt layer using metallic mold element and salt core of insert part, subjecting metallic mold element to forming force, and deforming and/or compressing salt layer |
KR101365196B1 (en) * | 2013-11-04 | 2014-02-19 | 주식회사 디알액시온 | Manufacturing mold of a hollow cylindrical casting |
US20160256921A1 (en) * | 2015-03-02 | 2016-09-08 | Ford Global Technologies, Llc | Process and tool for forming a vehicle component |
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US20230092300A1 (en) | 2023-03-23 |
US11883878B2 (en) | 2024-01-30 |
MX2022011438A (en) | 2023-03-22 |
CN115837458A (en) | 2023-03-24 |
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