US20090308563A1 - Core pin unit for die casting - Google Patents
Core pin unit for die casting Download PDFInfo
- Publication number
- US20090308563A1 US20090308563A1 US12/437,702 US43770209A US2009308563A1 US 20090308563 A1 US20090308563 A1 US 20090308563A1 US 43770209 A US43770209 A US 43770209A US 2009308563 A1 US2009308563 A1 US 2009308563A1
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- US
- United States
- Prior art keywords
- core pin
- core
- pin body
- rear end
- holder
- 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.)
- Abandoned
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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
-
- 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
Definitions
- the present invention relates to a core pin unit for die casting, and more particularly to a core pin unit for die casting that is mounting on molds so as to form a hole during casting.
- die casting involves supplying a molten metal to a mold formed of metal that is machining-processed.
- molds are manufactured to precise measurements so it is not necessary to process a finish, such that they have superior mechanical properties for mass production.
- Materials for the die casting are, for example, zinc, aluminum, tin, and copper, and the molds are manufactured by a casting device using air pressure, water pressure, and hydraulic pressure.
- Such a mold for die casting is made of a metal and includes an operating holder provided with a mold unit and a fixed holder.
- a core die is provided at the operating holder of the mold unit and a core holder supporting the core die is mounted at a rear of the core die, and the core holder is connected to an operating rod mounted at the base of a cylinder.
- a plurality of core pin units 100 are mounted at the core die so as to form holes during production.
- the core pin unit 100 includes a core pin body 110 inserted to the core die 101 , a locking screw 111 mounted at the core holder 103 , a spring 113 interposed between the core pin body 110 and the locking screw 111 , and a cooler 115 that penetrates the locking screw 111 and is inserted into the core pin body 110 so as to supply cooling water thereto.
- the core pin unit 100 As the technical structure of the core pin unit 100 is known (e.g., Korean Patent Application No 10-2005-0113236 discloses), a detailed description thereof will be omitted.
- the core pin unit according to the prior art absorbs a load through a spring so as to prevent the core pin from bending because of the molten metal, and at that time, the core pin body is moved back and forth by the spring and shock occurs during assembly of the cooler caused by the forward/rearward movement resulting in a problem of damaging the cooler.
- the present invention has been made in an effort to provide a core pin unit for die casting having advantages of preventing a core pin body that is used to form a hole in a product from bending because of a load of a molten metal at a mold, and preventing the core pin body from being damaged by vibration thereof, and thereby increasing the life cycle of a cooler and improving productivity.
- a core pin unit for die casting according to an exemplary embodiment of the present invention which is mounted inside a movable mold including a core die and a core holder for forming a hole at a mold, may include:
- a core pin body that penetrates both the core holder and the core die, wherein the front end thereof protrudes forwardly from the front of the core die and the rear end thereof protrudes rearwardly from the rear of the core holder, and that has a circular supporter along an exterior circumference thereof; a locking screw mounted at the rear end of the core pin body inserted into the core holder; a spring interposed between the core pin body and the locking screw in the core holder; and a cooler mounted at the rear end of the core pin body in such a state that it is inserted into the core pin body so as to cool the core pin body.
- the core pin body may be provided with a circulation passage in a length direction thereof so that the cooler is inserted therein, and a screw thread is formed at the rear end thereof.
- the locking screw may be provided with a penetrating hole so that the core pin body is inserted therein, and a screw thread is formed at a forward exterior circumference thereof so as to be connected to the core holder by screws.
- the locking screw may further include an insert groove at the rear end thereof so that a tool is mounted at the core holder.
- the cooler may include: a mounting connector coupled to the rear end of the core pin body by screws, and provided with an oil passage therein; a coolant supply nipple integrally coupled to the rear end of the mounting connector, and communicated with the cooling pump so as to receive a coolant; a coolant supply pipe integrally coupled to the coolant supply nipple through which the oil passage penetrates from the front of the mounting connector, and inserted into the core pin body so as to supply the core pin body with the coolant; and an coolant exhaust nipple integrally coupled to the rear end of the mounting connector, and communicated with the oil passage so as to exhaust the coolant that is provided to the inside of the core pin body through the coolant supply pipe and that is subsequently used for cooling.
- the core pin unit for die casting according to an exemplary embodiment of the present invention is employed in a die casting process according to an exemplary embodiment of the present invention, the core pin body can be prevented from bending by means of absorbing a load of a molten metal through the spring.
- the life-time of the cooler is extended by damage thereto being prevented, and productivity is improved by minimizing inferior goods caused by a leak of the coolant when the cooler is damaged.
- FIG. 1 is a schematic diagram showing a core pin unit for die casting according to the prior art.
- FIG. 2 is a cross-sectional view of a core pin unit for die casting according to an exemplary embodiment of the present invention.
- FIG. 3 is an exploded perspective view showing a core pin unit for die casting according to an exemplary embodiment of the present invention.
- FIG. 4 shows respective operational steps of a core pin unit for die casting according to an exemplary embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a core pin unit for die casting according to an exemplary embodiment of the present invention
- FIG. 3 is an exploded perspective view of the core pin unit for die casting according to an exemplary embodiment of the present invention.
- a core pin unit 1 for die casting is mounted inside a movable mold 7 including a core die 3 and core holder 5 so as to form a hole inside a product.
- the core pin unit 1 for die casting can prevent a core pin body for forming a hole in a product from being bent by a load of molten metal flowing into a cavity of the mold, and preventing the freely moving core pin body from being damaged by vibration of the core pin body, and can thereby increase the life cycle of a cooler and improve productivity.
- the core pin unit for die casting includes a core pin body 10 , a locking screw 20 , a spring 30 , and a cooler 40 .
- the core pin body 10 penetrates both the core holder 5 and the core die 3 , and a front portion of the core pin body 10 protrudes forwardly and the end portion thereof protrudes rearwardly from the core holder 5 .
- the core pin body 10 is provided with a circulation passage 11 along a length direction thereof so that the cooler 40 can be inserted therein, and has a circular supporter along an exterior circumference thereof.
- a screw thread is formed at the rear end of the core pin body 10 so that the cooler 40 can be mounted thereon.
- the locking screw 20 is mounted at the rear end of the core holder 5 in a state such that the rear end of the core pin body 10 penetrates the locking screw 20 .
- a penetrating hole 21 is formed inside the locking screw 20 so that the core pin body 10 can be inserted therein.
- an insert groove 23 is formed so that a tool 50 can be placed therein.
- the locking screw 20 prevents escape of the core pin body 10 from the core die 3 and the core holder 5 .
- the spring 30 is interposed between the core pin body 10 and the locking screw 20 in the core holder 5 .
- the spring 30 may be, e.g., a type of coil spring such that one end of the spring 30 is supported by a circular supporter 13 of the core pin body 10 , and the other end of the spring 30 is supported by the locking screw 20 .
- Such a spring 30 absorbs a load of molten metal so as to prevent the core pin body 10 from bending because of the load of the molten metal.
- the cooler 40 is inserted into the core pin body 10 from the rear end thereof so as to cool the core pin body 10 , and includes a mounting connector 41 , a coolant supply nipple 43 , a coolant supply pipe 45 , and a coolant exhaust nipple 47 .
- an oil passage 42 is formed in the mounting connector 41 , and the front end of the core pin body 10 is connected to the core pin body 10 by screws through a screw thread formed at the rear end of the core pin body 10 .
- coolant supply nipple 43 is integrally coupled to the rear end of the mounting connector 41 .
- the coolant supply nipple 43 is connected to a coolant pump (not shown) so as to receive the coolant.
- the coolant supply pipe 45 that is inserted into the circulation passage 11 is communicated with the coolant supply nipple 43 .
- the coolant supply pipe 45 is integrally coupled to the coolant supply nipple 43 in a state such that the coolant supply pipe 45 penetrates the oil passage 42 .
- Such a coolant supply pipe 45 cools the core pin body 10 by providing the inside the core pin body 10 with the coolant received from the coolant supply nipple 43 in a casting process.
- the coolant exhaust nipple 47 is integrally coupled to the rear end of the mounting connector 41 .
- the coolant exhaust nipple 47 exhausts the coolant used for cooling by communicating with the oil passage 42 .
- FIG. 4 shows respective operational steps of the core pin unit for die casting according to an exemplary embodiment of the present invention.
- the core pin body 10 is inserted into the rear end of the movable mold 7 and the core holder 5 so that the core pin body 10 penetrates the core holder 5 and core die 3 .
- the front end of the core pin body 10 protrudes in a direction at predetermined lengthwise intervals thereof from the rear end of the core holder 5 .
- the spring 30 is inserted to the core pin body 10 along the exterior circumference thereof, and the other end is supported by the circular supporter 13 of the core pin body 10 .
- a catching projection 51 is formed to the front end of the tool 50 corresponding to the insert groove 23 in the locking screw 20 .
- an inserting hole 53 that is provided with the core pin body 10 is formed at the tool 50 so as to prevent interference of the core pin body 10 when mounted the locking screw 20 .
- the locking screw 20 is coupled to the core holder 5 by rotating of the locking screw 20 through the tool 50 in a state such that rear end of the core pin body 10 is inserted to the inserting hole 53 .
- the assembling of the core pin unit 1 is completed by connecting the mounting connector 41 to the rear end of the core pin body 10 .
- the core pin body 10 can be prevented from bending by means of absorbing a load of the molten metal through the spring 30 .
- the impact power of the direct delivery of molten metal to the cooler 40 can be reduced owing to the extension of the rear length thereof, and mounting of the cooler 40 at the rear end thereof minimizes the vibration of the core pin body 10 to the cooler 40 under the load of the molten metal.
- the core pin body 10 can be prevented from being bent by means of absorbing the load of the molten metal through the spring 30 in a die casting process.
- the life-time of the cooler 40 is extended through by the damage to the cooler 40 being prevented, and productivity is improved by minimizing inferior goods caused by a leak of the coolant when the cooler 40 is damaged.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A core pin unit for die casting mounted inside a movable mold including a core die and a core holder for forming a hole at a mold is provided, which comprises a core pin body being inserted into both the core holder and the core die, a locking screw mounted at the rear end of the core pin body inserted into the core holder, a spring interposed between the core pin body and the locking screw in the core holder; and a cooler mounted at the rear end of the core pin body. The core pin unit prevents a core pin body from bending due to a load of a molten metal introduced and from being damaged by vibration thereof.
Description
- This application claims priority to and the benefit of Korean Patent Application No. 10-2008-0054804 filed on Jun. 11, 2008, the entire contents of which are incorporated herein by reference.
- (a) Technical Field
- The present invention relates to a core pin unit for die casting, and more particularly to a core pin unit for die casting that is mounting on molds so as to form a hole during casting.
- (b) Description of the Related Art
- Generally, die casting involves supplying a molten metal to a mold formed of metal that is machining-processed.
- For such die casting, molds are manufactured to precise measurements so it is not necessary to process a finish, such that they have superior mechanical properties for mass production. Materials for the die casting are, for example, zinc, aluminum, tin, and copper, and the molds are manufactured by a casting device using air pressure, water pressure, and hydraulic pressure.
- Such a mold for die casting is made of a metal and includes an operating holder provided with a mold unit and a fixed holder.
- A core die is provided at the operating holder of the mold unit and a core holder supporting the core die is mounted at a rear of the core die, and the core holder is connected to an operating rod mounted at the base of a cylinder.
- Herein, a plurality of
core pin units 100 are mounted at the core die so as to form holes during production. - As shown in
FIG. 1 , thecore pin unit 100 includes acore pin body 110 inserted to thecore die 101, alocking screw 111 mounted at thecore holder 103, aspring 113 interposed between thecore pin body 110 and thelocking screw 111, and acooler 115 that penetrates thelocking screw 111 and is inserted into thecore pin body 110 so as to supply cooling water thereto. - As the technical structure of the
core pin unit 100 is known (e.g., Korean Patent Application No 10-2005-0113236 discloses), a detailed description thereof will be omitted. - However, since the core pin unit according to the prior art absorbs a load through a spring so as to prevent the core pin from bending because of the molten metal, and at that time, the core pin body is moved back and forth by the spring and shock occurs during assembly of the cooler caused by the forward/rearward movement resulting in a problem of damaging the cooler.
- In addition, when the cooler is damaged by the forward/rearward movement of the core pin body, a resulting product is deteriorated due to the leakage of the coolant, as is productivity.
- The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
- The present invention has been made in an effort to provide a core pin unit for die casting having advantages of preventing a core pin body that is used to form a hole in a product from bending because of a load of a molten metal at a mold, and preventing the core pin body from being damaged by vibration thereof, and thereby increasing the life cycle of a cooler and improving productivity.
- A core pin unit for die casting according to an exemplary embodiment of the present invention, which is mounted inside a movable mold including a core die and a core holder for forming a hole at a mold, may include:
- a core pin body that penetrates both the core holder and the core die, wherein the front end thereof protrudes forwardly from the front of the core die and the rear end thereof protrudes rearwardly from the rear of the core holder, and that has a circular supporter along an exterior circumference thereof; a locking screw mounted at the rear end of the core pin body inserted into the core holder; a spring interposed between the core pin body and the locking screw in the core holder; and a cooler mounted at the rear end of the core pin body in such a state that it is inserted into the core pin body so as to cool the core pin body.
- The core pin body may be provided with a circulation passage in a length direction thereof so that the cooler is inserted therein, and a screw thread is formed at the rear end thereof.
- The locking screw may be provided with a penetrating hole so that the core pin body is inserted therein, and a screw thread is formed at a forward exterior circumference thereof so as to be connected to the core holder by screws.
- The locking screw may further include an insert groove at the rear end thereof so that a tool is mounted at the core holder.
- The cooler may include: a mounting connector coupled to the rear end of the core pin body by screws, and provided with an oil passage therein; a coolant supply nipple integrally coupled to the rear end of the mounting connector, and communicated with the cooling pump so as to receive a coolant; a coolant supply pipe integrally coupled to the coolant supply nipple through which the oil passage penetrates from the front of the mounting connector, and inserted into the core pin body so as to supply the core pin body with the coolant; and an coolant exhaust nipple integrally coupled to the rear end of the mounting connector, and communicated with the oil passage so as to exhaust the coolant that is provided to the inside of the core pin body through the coolant supply pipe and that is subsequently used for cooling.
- Accordingly, if the core pin unit for die casting according to an exemplary embodiment of the present invention is employed in a die casting process according to an exemplary embodiment of the present invention, the core pin body can be prevented from bending by means of absorbing a load of a molten metal through the spring.
- As can be seen from the foregoing, the life-time of the cooler is extended by damage thereto being prevented, and productivity is improved by minimizing inferior goods caused by a leak of the coolant when the cooler is damaged.
-
FIG. 1 is a schematic diagram showing a core pin unit for die casting according to the prior art. -
FIG. 2 is a cross-sectional view of a core pin unit for die casting according to an exemplary embodiment of the present invention. -
FIG. 3 is an exploded perspective view showing a core pin unit for die casting according to an exemplary embodiment of the present invention. -
FIG. 4 shows respective operational steps of a core pin unit for die casting according to an exemplary embodiment of the present invention. - An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.
-
FIG. 2 is a cross-sectional view of a core pin unit for die casting according to an exemplary embodiment of the present invention, andFIG. 3 is an exploded perspective view of the core pin unit for die casting according to an exemplary embodiment of the present invention. - Referring to the drawings, a core pin unit 1 for die casting according to an exemplary embodiment of the present invention is mounted inside a
movable mold 7 including acore die 3 andcore holder 5 so as to form a hole inside a product. - The core pin unit 1 for die casting according to an exemplary embodiment of the present invention can prevent a core pin body for forming a hole in a product from being bent by a load of molten metal flowing into a cavity of the mold, and preventing the freely moving core pin body from being damaged by vibration of the core pin body, and can thereby increase the life cycle of a cooler and improve productivity.
- As shown in
FIG. 2 andFIG. 3 , the core pin unit for die casting according to an exemplary embodiment of the present invention includes acore pin body 10, alocking screw 20, aspring 30, and acooler 40. - The
core pin body 10 penetrates both thecore holder 5 and thecore die 3, and a front portion of thecore pin body 10 protrudes forwardly and the end portion thereof protrudes rearwardly from thecore holder 5. - Herein, the
core pin body 10 is provided with acirculation passage 11 along a length direction thereof so that thecooler 40 can be inserted therein, and has a circular supporter along an exterior circumference thereof. - In addition, a screw thread is formed at the rear end of the
core pin body 10 so that the cooler 40 can be mounted thereon. - The
locking screw 20 is mounted at the rear end of thecore holder 5 in a state such that the rear end of thecore pin body 10 penetrates thelocking screw 20. - In this case, a penetrating
hole 21 is formed inside thelocking screw 20 so that thecore pin body 10 can be inserted therein. - Further, in case of mounting the
locking screw 20 to thecore holder 5, aninsert groove 23 is formed so that atool 50 can be placed therein. - The
locking screw 20 prevents escape of thecore pin body 10 from thecore die 3 and thecore holder 5. - The
spring 30 is interposed between thecore pin body 10 and thelocking screw 20 in thecore holder 5. - At this time, the
spring 30 may be, e.g., a type of coil spring such that one end of thespring 30 is supported by acircular supporter 13 of thecore pin body 10, and the other end of thespring 30 is supported by thelocking screw 20. - Such a
spring 30 absorbs a load of molten metal so as to prevent thecore pin body 10 from bending because of the load of the molten metal. - As an exemplary embodiment of the present invention, the
cooler 40 is inserted into thecore pin body 10 from the rear end thereof so as to cool thecore pin body 10, and includes amounting connector 41, acoolant supply nipple 43, acoolant supply pipe 45, and acoolant exhaust nipple 47. - Firstly, an
oil passage 42 is formed in themounting connector 41, and the front end of thecore pin body 10 is connected to thecore pin body 10 by screws through a screw thread formed at the rear end of thecore pin body 10. - Further, the
coolant supply nipple 43 is integrally coupled to the rear end of themounting connector 41. - The coolant supply nipple 43 is connected to a coolant pump (not shown) so as to receive the coolant.
- In addition, the
coolant supply pipe 45 that is inserted into thecirculation passage 11 is communicated with thecoolant supply nipple 43. - The
coolant supply pipe 45 is integrally coupled to thecoolant supply nipple 43 in a state such that thecoolant supply pipe 45 penetrates theoil passage 42. - Such a
coolant supply pipe 45 cools thecore pin body 10 by providing the inside thecore pin body 10 with the coolant received from the coolant supply nipple 43 in a casting process. - The
coolant exhaust nipple 47 is integrally coupled to the rear end of themounting connector 41. - The
coolant exhaust nipple 47 exhausts the coolant used for cooling by communicating with theoil passage 42. - Hereinafter, assembly/operation processes of the core pin unit 1 according to an exemplary embodiment of the present invention will be described in detail.
-
FIG. 4 shows respective operational steps of the core pin unit for die casting according to an exemplary embodiment of the present invention. - Firstly, as shown in S1 of
FIG. 4 , thecore pin body 10 is inserted into the rear end of themovable mold 7 and thecore holder 5 so that thecore pin body 10 penetrates thecore holder 5 andcore die 3. - In this case, the front end of the
core pin body 10 protrudes in a direction at predetermined lengthwise intervals thereof from the rear end of thecore holder 5. - Subsequently, as shown in S2 of
FIG. 4 , thespring 30 is inserted to the rear end of thecore pin body 10. - The
spring 30 is inserted to thecore pin body 10 along the exterior circumference thereof, and the other end is supported by thecircular supporter 13 of thecore pin body 10. - When the inserting of the
spring 30 is completed, as shown in S3 ofFIG. 4 , after thelocking screw 20 is inserted to thecore holder 5, as shown in S4 ofFIG. 4 , thelocking screw 20 is fixedly connected to thecore holder 5 by means of thetool 50. - In this case, a
catching projection 51 is formed to the front end of thetool 50 corresponding to theinsert groove 23 in thelocking screw 20. - In addition, an inserting
hole 53 that is provided with thecore pin body 10 is formed at thetool 50 so as to prevent interference of thecore pin body 10 when mounted the lockingscrew 20. - That is to say, after the catching
projection 51 is engaged to theinsert groove 23 in the lockingscrew 20, the lockingscrew 20 is coupled to thecore holder 5 by rotating of the lockingscrew 20 through thetool 50 in a state such that rear end of thecore pin body 10 is inserted to the insertinghole 53. - When the assembling of the locking
screw 20 is completed, as shown in S5 ofFIG. 4 , thecoolant supply pipe 45 in the cooler 40 is inserted to thecirculation passage 11. - Then, the assembling of the core pin unit 1 is completed by connecting the mounting
connector 41 to the rear end of thecore pin body 10. - In a casting process of the core pin unit 1 for die casting according to an exemplary embodiment of the present invention, the
core pin body 10 can be prevented from bending by means of absorbing a load of the molten metal through thespring 30. - As a result of the foregoing, the impact power of the direct delivery of molten metal to the cooler 40 can be reduced owing to the extension of the rear length thereof, and mounting of the cooler 40 at the rear end thereof minimizes the vibration of the
core pin body 10 to the cooler 40 under the load of the molten metal. - In addition, damage to the cooler 40 is decreased, which results in a long life thereof by minimizing impact power of the
core pin body 10 to the cooler 40. - Accordingly, if the core pin unit for die casting according to an exemplary embodiment of the present invention is employed, the
core pin body 10 can be prevented from being bent by means of absorbing the load of the molten metal through thespring 30 in a die casting process. - As can be seen from the foregoing, the life-time of the cooler 40 is extended through by the damage to the cooler 40 being prevented, and productivity is improved by minimizing inferior goods caused by a leak of the coolant when the cooler 40 is damaged.
- While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (5)
1. A core pin unit for die casting, which is mounted inside a movable mold including a core die and a core holder for forming a hole at a mold, the core pin unit comprising:
a core pin body being inserted into both the core holder and the core die such that a front end of the core pin body protrudes forwardly from the core die and a rear end thereof protrudes rearwardly from the core holder, a middle portion thereof including a circular supporter formed along an exterior circumference thereof;
a locking screw mounted at the rear end of the core pin body inserted into the core holder;
a spring interposed between the core pin body and the locking screw in the core holder; and
a cooler mounted at the rear end of the core pin body in such a state that it is inserted into the core pin body so as to cool the core pin body.
2. The core pin unit for die casting of claim 1 , wherein the core pin body is provided with a circulation passage formed along a length direction thereof so that the cooler is inserted therein, and a screw thread is formed at the rear end thereof.
3. The core pin unit for die casting of claim 1 , wherein the locking screw is provided with a penetrating hole into which the core pin body is inserted, and a screw thread is formed at an exterior circumference thereof so as to be connected to the core holder by screws.
4. The core pin unit for die casting of claim 3 , wherein an insert groove is formed at the rear end of the locking screw so that a tool is mounted at the core holder.
5. The core pin unit for die casting of claim 1 , wherein the cooler comprises:
a mounting connector having a front portion threaded to a rear end of the core pin and an oil passage formed therein;
a coolant supply nipple integrally coupled to the rear end of the mounting connector, and communicated with the cooling pump so as to receive a coolant;
a coolant supply pipe integrally coupled to the coolant supply nipple, which penetrates the oil passage from the front of the mounting connector, and which is inserted into the core pin body so as to supply the core pin body with the coolant; and
a coolant exhaust nipple integrally coupled to the rear end of the mounting connector, and communicated with the oil passage so as to exhaust the coolant that is provided to the inside of the core pin body through the coolant supply pipe and that is subsequently used for cooling.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080054804A KR101048123B1 (en) | 2008-06-11 | 2008-06-11 | Core pin unit for die casting |
KR10-2008-0054804 | 2008-06-11 |
Publications (1)
Publication Number | Publication Date |
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US20090308563A1 true US20090308563A1 (en) | 2009-12-17 |
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ID=41413694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/437,702 Abandoned US20090308563A1 (en) | 2008-06-11 | 2009-05-08 | Core pin unit for die casting |
Country Status (3)
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US (1) | US20090308563A1 (en) |
KR (1) | KR101048123B1 (en) |
CN (1) | CN101602100A (en) |
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US8360134B2 (en) * | 2010-10-11 | 2013-01-29 | Ford Global Technologies, Llc | Method and system for extracting heat from metal castings and molds |
US20170151607A1 (en) * | 2015-12-01 | 2017-06-01 | Hyundai Motor Company | Mold apparatus for high pressure casting |
CN107661969A (en) * | 2016-07-27 | 2018-02-06 | 华孚精密金属科技(常熟)有限公司 | Enter pin fixed structure |
CN108580840A (en) * | 2018-06-25 | 2018-09-28 | 上海东岩机械股份有限公司 | A kind of local extrusion device of die casting |
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CN103769557B (en) * | 2014-01-03 | 2015-08-12 | 宁波埃利特模具制造有限公司 | A kind of aluminum alloy die-casting die |
KR101601503B1 (en) * | 2014-10-14 | 2016-03-09 | 현대자동차주식회사 | Core pin to prevent molten metal flows into pipe and casting device using the same |
KR101646358B1 (en) * | 2014-10-20 | 2016-08-08 | 현대자동차주식회사 | Die-casting method |
KR102586918B1 (en) * | 2018-10-05 | 2023-10-10 | 현대자동차주식회사 | a high pressure die casting within aluminum pipe and method thereof |
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KR19990015157U (en) * | 1997-10-13 | 1999-05-15 | 윤종용 | Product take-out device of injection mold for injection molding |
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KR20070016257A (en) * | 2005-08-02 | 2007-02-08 | 현대자동차주식회사 | core fin for die casting |
KR100680736B1 (en) * | 2005-11-25 | 2007-02-09 | 현대자동차주식회사 | Core pin mounting means of high pressure casting metal mold |
-
2008
- 2008-06-11 KR KR1020080054804A patent/KR101048123B1/en active IP Right Grant
-
2009
- 2009-05-08 US US12/437,702 patent/US20090308563A1/en not_active Abandoned
- 2009-06-03 CN CNA2009101455821A patent/CN101602100A/en active Pending
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US4275864A (en) * | 1980-06-12 | 1981-06-30 | Richards Les W | Method and system for cooling a mold |
US4655280A (en) * | 1984-03-26 | 1987-04-07 | Fuso Keigokin Co., Ltd. | Die cooling pipe |
US5137076A (en) * | 1990-03-31 | 1992-08-11 | Ahresty Corporation | Stepped core pin for a casting mold |
US7604038B2 (en) * | 2006-11-21 | 2009-10-20 | Hyundai Motor Company | Head face slide core of die casting mold for cylinder block |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8360134B2 (en) * | 2010-10-11 | 2013-01-29 | Ford Global Technologies, Llc | Method and system for extracting heat from metal castings and molds |
US20170151607A1 (en) * | 2015-12-01 | 2017-06-01 | Hyundai Motor Company | Mold apparatus for high pressure casting |
CN107661969A (en) * | 2016-07-27 | 2018-02-06 | 华孚精密金属科技(常熟)有限公司 | Enter pin fixed structure |
CN108580840A (en) * | 2018-06-25 | 2018-09-28 | 上海东岩机械股份有限公司 | A kind of local extrusion device of die casting |
Also Published As
Publication number | Publication date |
---|---|
KR20090128841A (en) | 2009-12-16 |
CN101602100A (en) | 2009-12-16 |
KR101048123B1 (en) | 2011-07-08 |
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Legal Events
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AS | Assignment |
Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, SEUNG SANG;REEL/FRAME:022656/0798 Effective date: 20090505 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |