CN112846139A - Die-casting forming die with multi-stage pouring system and using method thereof - Google Patents

Die-casting forming die with multi-stage pouring system and using method thereof Download PDF

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Publication number
CN112846139A
CN112846139A CN202011606708.3A CN202011606708A CN112846139A CN 112846139 A CN112846139 A CN 112846139A CN 202011606708 A CN202011606708 A CN 202011606708A CN 112846139 A CN112846139 A CN 112846139A
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CN
China
Prior art keywords
runner
pouring
die
plate
casting
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Pending
Application number
CN202011606708.3A
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Chinese (zh)
Inventor
张磊
吴文清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fulltech Metal Technology Kunshan Co ltd
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Fulltech Metal Technology Kunshan Co ltd
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Priority to CN202011606708.3A priority Critical patent/CN112846139A/en
Publication of CN112846139A publication Critical patent/CN112846139A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/2076Cutting-off equipment for sprues or ingates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2218Cooling or heating equipment for dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2236Equipment for loosening or ejecting castings from dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272Sprue channels

Abstract

The invention discloses a die-casting forming die with a multistage pouring system, which comprises an upper die, a lower die and the multistage pouring system, wherein the upper die comprises a panel, an A plate and an upper die core; the lower die comprises an ejector plate, a plate B and a push plate, and a lower die core is embedded in the plate B; the multistage pouring system comprises a side pouring gate, a first-stage pouring runner, a second-stage pouring runner and a third-stage pouring runner, wherein the side pouring gate arranged on one side of the panel is connected with the first-stage pouring runner, the first-stage pouring runner is connected with the second-stage pouring runner, and the second-stage pouring runner is connected with the third-stage pouring runner. According to the invention, on the premise of not changing the position of the side gate, the primary pouring runner is additionally arranged to be respectively connected with the side gate and the secondary pouring runner, the secondary pouring runner is positioned at the center of the mold, so that the side feeding mode is converted into center feeding, a plurality of acupuncture points are fed simultaneously, the qualification rate of products is obviously improved, and when the mold is opened, the primary pouring runner and the secondary pouring runner are cut off, so that the separation of the pouring runners is easy to realize, the molding effect is good, and the rejection rate is low.

Description

Die-casting forming die with multi-stage pouring system and using method thereof
Technical Field
The invention relates to the technical field of die-casting dies, in particular to a die-casting forming die with a multistage gating system and a using method thereof.
Background
Three board moulds are the mould that a common pouring stub bar and material were handled in being arranged in mould casting moulding, common runner all sets up the one side at three board moulds among the conventional art, the side runner promptly, by the side runner feeding, then shunt to a plurality of acupuncture points through the runner, the acupuncture point feeding that is close to the side runner is very fast at this time, it is same, the acupuncture point feeding of keeping away from the side runner is very slow, thereby lead to the unable simultaneous feeding of a plurality of acupuncture points, consequently this kind of side runner's the mode of setting up needs the runner design of mould comparatively complicated, theoretically need satisfy every acupuncture point and feed simultaneously, otherwise cause the product yield after the die-casting shaping easily low, the finished product surface easily has the sand hole, be unfavorable for subsequent manufacturing procedure, for example attack the tooth operation. And traditional three-plate die structure realizes comparatively difficultly to the stub bar of mould and the separation of material handle, and the shaping effect is poor, and the disability rate is high, consequently only is applicable to the less product of fracture diameter, and the use limitation is great.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a die-casting mold with a multi-stage gating system, including:
the upper die comprises a panel, an A plate and an upper die core which are sequentially connected from top to bottom;
the lower die comprises an ejector plate, a plate B and a push plate which are sequentially connected from bottom to top, a lower die core is embedded in the plate B, an ejector pin is arranged on the ejector plate, and the ejector pin penetrates through the lower die core;
and a multistage pouring system, the multistage pouring system includes side runner, one-level pouring runner, second grade pouring runner and tertiary pouring runner, one side of panel is located to the side runner, the one-level pouring runner on the A board is located in the connection of side runner, the second grade pouring runner of upper mold core central point position is located in the connection of one-level pouring runner, the third grade pouring runner in the push pedal is located in the connection of second grade pouring runner, the thimble is connected to tertiary pouring runner, the pouring material realizes the side feeding by the side runner, flow into second grade pouring runner by one-level pouring runner again, convert the side feeding into the center feeding, shunt to tertiary pouring runner by second grade pouring runner at last, during the die sinking, cut off one-level pouring runner and second grade pouring runner, thimble board and push pedal cooperation are in order.
By adopting the technical scheme, the one end of the primary pouring runner, which is close to the secondary pouring runner, is provided with the inverted buckle part.
By adopting the technical scheme, the three-level pouring runner comprises a pouring main road and pouring branch roads, the pouring main road is provided with a plurality of pouring branch roads connected with acupuncture points, and the length of the runner from the terminal point of each pouring branch road to the center of the two-level pouring runner is equal.
Technical scheme more than adopting, every pouring branch road is provided with reposition of redundant personnel portion in the position that is close to the terminal point, reposition of redundant personnel portion includes first reposition of redundant personnel runner and second reposition of redundant personnel runner, and the pouring branch road is connected jointly to the one end of first reposition of redundant personnel runner and second reposition of redundant personnel runner, and the terminal point of pouring branch road is connected jointly to the other end of first reposition of redundant personnel runner and second reposition of redundant personnel runner.
Technical scheme more than adopting, tertiary pouring runner still includes cold stub bar, is provided with cold stub bar on every pouring branch road, and the quantity of cold stub bar is a plurality of, and a plurality of cold stub bars are annular equipartition on the pouring branch road.
According to the technical scheme, the casting mold further comprises a vacuumizing system, the vacuumizing system comprises an exhaust runner, one end of the exhaust runner is connected with the three-level casting runner, and the other end of the exhaust runner extends to the outer space of the mold.
Technical scheme more than adopting, vacuum pumping system includes closing plate and sealing strip, the closing plate set up in between thimble board and the B board, be provided with the sealing strip on the closing plate.
Technical scheme more than adopting still includes cooling system, cooling system includes condenser tube, the acupuncture point is connected to condenser tube's one end, and condenser tube's the other end passes B board, closing plate and thimble board and extends to the exterior space of mould.
By adopting the technical scheme, the die further comprises a limiting screw, the upper die core is fixedly connected with the plate A, and the part A is arranged on the push plate in a separable mode through the limiting screw.
Another object of the present invention is to provide a method for using the die casting mold with a multi-stage gating system, which includes:
side feeding of the casting material is realized through a side gate, the casting material flows into a secondary casting runner through a primary casting runner, the side feeding is converted into center feeding, and the center feeding is finally distributed to a tertiary casting runner through the secondary casting runner;
the first parting is positioned between the panel and the A plate, and the primary pouring runner and the second pouring runner are broken off by using the reverse buckling part because the primary pouring runner is provided with the reverse buckling part;
the second parting is positioned between the A plate and the push plate, and the ejector plate and the push plate are matched to push out the product.
The invention has the beneficial effects that: according to the invention, on the premise of not changing the position of the side gate, the primary pouring runner is additionally arranged to be respectively connected with the side gate and the secondary pouring runner, the secondary pouring runner is positioned at the central position of the mold, so that the side feeding mode is converted into central feeding, a plurality of acupuncture points are fed simultaneously, the qualification rate of products is obviously improved, and the primary pouring runner and the secondary pouring runner are cut off during mold opening, so that the separation of the pouring runners is easy to realize, the molding effect is good, the rejection rate is low, the limitation of the fracture diameter size of the products is avoided, and the use limitation is small.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view based on fig. 1 with a panel omitted.
Fig. 3 is a schematic structural view based on fig. 2 with the a plate omitted.
Fig. 4 is a schematic structural view of fig. 3 without the upper mold core.
Fig. 5 is a partially enlarged schematic view of a portion a of fig. 4.
Fig. 6 is a schematic structural view based on the push plate omitted from fig. 5.
Fig. 7 is a schematic structural view based on fig. 6 with the B plate omitted.
The reference numbers in the figures illustrate: 11. a panel; 12. a, a plate; 13. an upper die core; 21. an ejector plate; 211. a thimble; 22. b, plate; 23. pushing the plate; 24. a lower die core; 31. a side gate; 32. a primary pouring runner; 321. a back-off part; 33. secondary pouring flow channels; 34. a three-stage pouring runner; 341. pouring a main road; 342. pouring a branch; 3421. a first diversion flow channel; 3422. a second diversion flow channel; 343. cooling the stub bar; 41. an exhaust flow passage; 42. a sealing plate; 43. a sealing strip; 51. a cooling water pipe; 6. a limiting screw; 7. the acupoints.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 to 7, an embodiment of the present invention provides a die-casting mold with a multi-stage gating system, including an upper mold and a lower mold, where the upper mold and the lower mold realize mold opening and closing of the mold.
The upper die comprises a panel 11, an A plate 12 and an upper die core 13 which are sequentially connected from top to bottom, the upper die core 13 is locked on the A plate 12 through locking screws, so that the A plate 12 and the upper die core 13 form an integral structure, the A plate 12 is used as the main part of the integral structure because the size of the A plate 12 is larger than that of the upper die core 13, and the panel 11 is arranged on the A plate 12 in a separable mode.
In addition, the lower die comprises an ejector plate 21, a B plate 22 and a push plate 23 which are sequentially connected from bottom to top, a lower die core 24 is embedded in the B plate 22, an ejector pin 211 is arranged on the ejector plate 21, the ejector pin 211 penetrates through the lower die core 24, and the ejector pin 211 and the push plate 23 are matched to realize the ejection action of a product.
The mold comprises a multi-stage pouring system, wherein the multi-stage pouring system comprises a side gate 31, a primary pouring runner 32, a secondary pouring runner 33 and a tertiary pouring runner 34, the side gate 31 is arranged on one side of a panel 11, and the arrangement position and arrangement mode of the side gate 31 on the panel 11 are the same as those of the side gate 31 of the conventional mold. The side gate 31 is connected with a first-stage pouring runner 32 arranged on the A plate 12, the first-stage pouring runner 32 is connected with a second-stage pouring runner 33 arranged at the central position of the upper die core 13, and the second-stage pouring runner 33 is connected with a third-stage pouring runner 34. The casting material is laterally fed through a side gate 31, then flows into a secondary casting runner 33 through a primary casting runner 32, is converted into a central feeding material, and finally is distributed to a tertiary casting runner 34 through the secondary casting runner 33. Under the prerequisite that does not change side gate 31 position, increase one-level pouring runner 32 and be connected with side gate 31 and second grade pouring runner 33 respectively, second grade pouring runner 33 is located the central point of mould and puts, makes the mode of side feeding convert the center feeding to make a plurality of acupuncture points feed simultaneously, showing the qualification rate that has improved the product.
Preferably, one-level pouring runner 32 is square tubular structure, and second grade pouring runner 33 is the pipe structure, and square pipe is the level setting on A board 12, and will switch on to pipe department by the castable of side runner 31 feeding through square pipe, and the vertical central point that sets up at last mould benevolence 13 of pipe puts to the mode that will incline the feeding converts the center feeding into.
The effect of the addition of the primary pouring runner 32 on the split is taken into account. Therefore, in the present invention, the reverse-buckling portion 321 is disposed at one end of the primary pouring runner 32 close to the secondary pouring runner 33, and when the mold is opened for the first parting, the primary pouring runner 32 and the secondary pouring runner are broken off by using the reverse-buckling portion 321, so that the increase of the primary pouring runner 32 does not interfere with the mold opening operation of the mold. And a third-stage pouring runner 34 is embedded in the push plate 23, the third-stage pouring runner 34 is connected with an ejector pin 211, and the ejector pin plate 21 is matched with the push plate 23 to push out a product during the second parting of die opening.
Further, the third-level pouring runner 34 includes a pouring trunk 341 and pouring branches 342, the pouring trunk 341 is provided with a plurality of pouring branches 342 connected to the acupoints, the length of the runner from the end point of each pouring branch 342 to the center of the second-level pouring runner 33 is equal, so as to ensure that the pouring material fed from the center enters each acupoint through the third-level pouring runner 34 at the same time, and ensure the yield of the molded product.
When the flow rate of the pouring material on each pouring branch 342 reaches the end point is too high, the pouring material is likely to impact positions other than acupuncture points, and the service life of the mold is influenced after long-term accumulation. Each pouring branch 342 of the present invention is therefore provided with a tap near the terminus. Specifically, the flow dividing portion includes a first flow dividing runner 3421 and a second flow dividing runner 3422, one end of the first flow dividing runner 3421 and one end of the second flow dividing runner 3422 are connected to the pouring branch 342, the other end of the first flow dividing runner 3421 and the other end of the second flow dividing runner 3422 are connected to the end point of the pouring branch 342, when the pouring material on the pouring branch 342 reaches the flow dividing portion, the flow dividing portion divides the pouring material into two parts, one of the two parts flows on the first flow dividing runner 3421, the other part flows on the second flow dividing runner 3422, and the two parts finally converge at the end point of the pouring branch 342, so that the guiding and buffering effects on the pouring material are achieved, and the problem that the service life of the mold is affected due to the fact that the pouring material impacts a non-acupuncture point position due to too fast.
The third-stage pouring runner 34 further comprises a plurality of cold stub bars 343, each pouring branch 342 is provided with a plurality of cold stub bars 343, and the plurality of cold stub bars 343 are annularly and uniformly distributed on the pouring branch 342. The cold stub bar 343 sets up and is used for absorbing cold material and residue before the product shaping to guarantee product shaping precision.
The mold comprises a vacuumizing system, a sealing plate 42 and a sealing strip 43, wherein the vacuumizing system comprises an exhaust runner 41, one end of the exhaust runner 41 is connected with a three-stage pouring runner 34, and the other end of the exhaust runner 41 extends to the outer space of the mold; the sealing plate 42 is arranged between the ejector plate 21 and the B plate 22, and the sealing plate 42 is provided with a sealing strip 43, so that a vacuum environment of the mold is realized.
The mold of the invention comprises a cooling system, the cooling system comprises a cooling water pipe 51, one end of the cooling water pipe 51 is connected with acupuncture points, the other end of the cooling water pipe 51 penetrates through the B plate 22, the sealing plate 42 and the ejector plate 21 and extends to the outer space of the mold, and the cooling of the mold is realized through the arrangement of the cooling water pipe 51.
The invention relates to a use method of a die-casting forming die with a multistage gating system, which comprises the following steps: the casting material is laterally fed through a side gate 31, then flows into a secondary casting runner 33 through a primary casting runner 32, is converted into central feeding, and finally is distributed to a tertiary casting runner 34 through the secondary casting runner 33; the first parting is positioned between the panel 11 and the A plate 12, and the primary pouring runner 32 and the second pouring runner are broken off by using the reverse-buckling part 321 as the primary pouring runner 32 is provided with the reverse-buckling part 321; the second parting is positioned between the A plate 12 and the push plate 23, and the ejector plate 21 and the push plate 23 are matched to push out the product.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A die-casting forming die with a multi-stage gating system is characterized by comprising:
the upper die comprises a panel, an A plate and an upper die core which are sequentially connected from top to bottom;
the lower die comprises an ejector plate, a plate B and a push plate which are sequentially connected from bottom to top, a lower die core is embedded in the plate B, an ejector pin is arranged on the ejector plate, and the ejector pin penetrates through the lower die core;
and a multistage pouring system, the multistage pouring system includes side runner, one-level pouring runner, second grade pouring runner and tertiary pouring runner, one side of panel is located to the side runner, the one-level pouring runner on the A board is located in the connection of side runner, the second grade pouring runner of upper mold core central point position is located in the connection of one-level pouring runner, the third grade pouring runner in the push pedal is located in the connection of second grade pouring runner, the thimble is connected to tertiary pouring runner, the pouring material realizes the side feeding by the side runner, flow into second grade pouring runner by one-level pouring runner again, convert the side feeding into the center feeding, shunt to tertiary pouring runner by second grade pouring runner at last, during the die sinking, cut off one-level pouring runner and second grade pouring runner, thimble board and push pedal cooperation are in order.
2. The die-casting molding die with a multi-stage gating system according to claim 1, wherein: and one end of the primary pouring runner, which is close to the secondary pouring runner, is provided with a back-off part.
3. The die-casting molding die with a multi-stage gating system according to claim 1, wherein: the three-level pouring runner comprises a pouring main road and pouring branch roads, wherein the pouring main road is provided with a plurality of pouring branch roads connected with acupuncture points, and the length of the runner from the terminal point of each pouring branch road to the center of the two-level pouring runner is equal.
4. The die-casting molding die with a multistage gating system according to claim 3, characterized in that: each pouring branch is provided with reposition of redundant personnel portion in the position that is close to the terminal point, reposition of redundant personnel portion includes first reposition of redundant personnel runner and second reposition of redundant personnel runner, and the pouring branch is connected jointly to the one end of first reposition of redundant personnel runner and second reposition of redundant personnel runner, and the terminal point of pouring branch is connected jointly to the other end of first reposition of redundant personnel runner and second reposition of redundant personnel runner.
5. The die-casting molding die with a multistage gating system according to claim 3, characterized in that: the three-stage pouring runner further comprises cold stub bars, wherein the cold stub bars are arranged on each pouring branch, the number of the cold stub bars is multiple, and the multiple cold stub bars are annularly and uniformly distributed on the pouring branches.
6. The die-casting molding die with a multi-stage gating system according to claim 1, wherein: the mould is characterized by further comprising a vacuumizing system, wherein the vacuumizing system comprises an exhaust runner, one end of the exhaust runner is connected with the three-level pouring runner, and the other end of the exhaust runner extends to the outer space of the mould.
7. The die-casting molding die with a multi-stage gating system according to claim 6, wherein: the vacuumizing system comprises a sealing plate and a sealing strip, the sealing plate is arranged between the ejector plate and the B plate, and the sealing strip is arranged on the sealing plate.
8. The die-casting molding die with a multi-stage gating system according to claim 1, wherein: still include cooling system, cooling system includes condenser tube, condenser tube's one end is connected the acupuncture point, and condenser tube's the other end passes B board, closing plate and thimble board and extends to the exterior space of mould.
9. The die-casting molding die with a multi-stage gating system according to claim 1, wherein: the upper die core is fixedly connected with the plate A, and the part A is arranged on the push plate in a separable mode through the limit screw.
10. A method of using the die-casting mold with a multi-stage gating system according to any one of claims 1 to 9, comprising:
side feeding of the casting material is realized through a side gate, the casting material flows into a secondary casting runner through a primary casting runner, the side feeding is converted into center feeding, and the center feeding is finally distributed to a tertiary casting runner through the secondary casting runner;
the first parting is positioned between the panel and the A plate, and the primary pouring runner and the second pouring runner are broken off by using the reverse buckling part because the primary pouring runner is provided with the reverse buckling part;
the second parting is positioned between the A plate and the push plate, and the ejector plate and the push plate are matched to push out the product.
CN202011606708.3A 2020-12-28 2020-12-28 Die-casting forming die with multi-stage pouring system and using method thereof Pending CN112846139A (en)

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Application Number Priority Date Filing Date Title
CN202011606708.3A CN112846139A (en) 2020-12-28 2020-12-28 Die-casting forming die with multi-stage pouring system and using method thereof

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Application Number Priority Date Filing Date Title
CN202011606708.3A CN112846139A (en) 2020-12-28 2020-12-28 Die-casting forming die with multi-stage pouring system and using method thereof

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103958095A (en) * 2011-09-16 2014-07-30 Ksm铸造集团有限公司 Three-plate die casting tool having a gating system, and gating system
CN204094103U (en) * 2014-09-02 2015-01-14 广东鸿泰科技股份有限公司 A kind of Yu Ding mechanism of three-plate type die casting
CN204817996U (en) * 2015-08-07 2015-12-02 武汉鸿博鑫精密机械工贸有限公司 Novel die casting die of three plate structure formulas
CN205147274U (en) * 2015-12-11 2016-04-13 东莞市东升压铸模具有限公司 Multilocular die casting die of a mould
CN109732057A (en) * 2019-01-31 2019-05-10 广东鸿图南通压铸有限公司 A kind of double centers are into three board mold of die casting poured
KR102135398B1 (en) * 2020-04-16 2020-07-20 이창근 Gate structure of die casting mold for manufacturing steering motor housing cover
CN211489584U (en) * 2019-12-31 2020-09-15 东莞市建铠压铸科技有限公司 Point type feeding mold

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103958095A (en) * 2011-09-16 2014-07-30 Ksm铸造集团有限公司 Three-plate die casting tool having a gating system, and gating system
CN204094103U (en) * 2014-09-02 2015-01-14 广东鸿泰科技股份有限公司 A kind of Yu Ding mechanism of three-plate type die casting
CN204817996U (en) * 2015-08-07 2015-12-02 武汉鸿博鑫精密机械工贸有限公司 Novel die casting die of three plate structure formulas
CN205147274U (en) * 2015-12-11 2016-04-13 东莞市东升压铸模具有限公司 Multilocular die casting die of a mould
CN109732057A (en) * 2019-01-31 2019-05-10 广东鸿图南通压铸有限公司 A kind of double centers are into three board mold of die casting poured
CN211489584U (en) * 2019-12-31 2020-09-15 东莞市建铠压铸科技有限公司 Point type feeding mold
KR102135398B1 (en) * 2020-04-16 2020-07-20 이창근 Gate structure of die casting mold for manufacturing steering motor housing cover

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