CN108580840B - Local extrusion device of die casting die - Google Patents
Local extrusion device of die casting die Download PDFInfo
- Publication number
- CN108580840B CN108580840B CN201810663277.0A CN201810663277A CN108580840B CN 108580840 B CN108580840 B CN 108580840B CN 201810663277 A CN201810663277 A CN 201810663277A CN 108580840 B CN108580840 B CN 108580840B
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- core
- extrusion
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- oil
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- 238000001125 extrusion Methods 0.000 title claims abstract description 104
- 238000004512 die casting Methods 0.000 title claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 38
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 5
- 229910001338 liquidmetal Inorganic materials 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a local extrusion device of a die casting die, which comprises a die casting part needing local extrusion and an extrusion device for extruding the die casting part, wherein the direction of the extrusion device, which is close to the die casting part, is taken as the front, and the extrusion device comprises an extrusion core, a core guide sleeve sleeved outside the extrusion core and fixed in a die insert, an oil cylinder piston rod fixedly connected with the rear end of the extrusion core, and a hydraulic oil cylinder for driving the oil cylinder piston rod; the extrusion core consists of a threaded connector, a guide matching section and an extrusion section with a taper end; the core guide sleeve is matched with the extrusion section through the connector core guide sleeve fixing plate to form a positioning pipe, the extrusion core is fixedly connected with the cylinder piston rod through the threaded connection section, a core cooling water inlet and outlet are formed in the threaded connection section, and a water flow circulation system is formed between the core cooling water inlet and outlet and the cylinder core connector and between the core cooling water inlet and outlet and the cylinder core insert.
Description
Technical Field
The invention relates to a local extrusion device of a die-casting die, and belongs to the technical field of die-casting dies.
Background
The working principle of die casting is to fill liquid or semi-solid metal into a die cavity of a die casting die at high speed under the action of high pressure, and rapidly solidify under the action of the pressure to obtain a casting.
In die casting, the wall thickness is generally such that holes, which we call shrinkage holes, porosity, are created internally by shrinkage during solidification of the liquid metal. Shrinkage cavities can affect the mechanical properties of the product, reduce the performance of the part, and even discard the casting. For parts with higher internal quality requirements and local wall thickness, such as large-sized shells of automobile parts, the local wall thickness is thicker, the area of the part with the wall thickness is larger, or the dead angle position of the product is filled, so that internal looseness or air holes are more easily generated at the part with the wall thickness, the processing performance is reduced, the air tightness is reduced, and the qualification rate of the product is greatly reduced. Therefore, with the increasing requirements of product technology, reducing the porosity of castings in the die casting process is an urgent problem to be solved.
Disclosure of Invention
The invention aims to solve the technical problems that the existing local dead angle position with thicker local wall thickness and larger area of the part with thicker wall thickness or the product is more easy to generate internal looseness or air holes at the part with thicker wall thickness, and the defects of reducing the processing performance, reducing the air tightness and greatly reducing the qualification rate of the product are overcome.
In order to solve the technical problems, the invention provides the following technical scheme:
The invention provides a local extrusion device of a die casting die, which comprises a die casting to be extruded locally and an extrusion device for extruding the die casting die, wherein the direction of the extrusion device, which is close to the die casting, is taken as the front, the extrusion device comprises an extrusion core, a core guide sleeve sleeved outside the extrusion core and fixed in a die insert, an oil cylinder piston rod fixedly connected with the rear end of the extrusion core, and a hydraulic oil cylinder for driving the oil cylinder piston rod, the hydraulic oil cylinder is provided with an oil inlet oil nozzle, the oil inlet oil nozzle comprises an oil inlet and an oil outlet, and the oil inlet and the oil outlet are connected with a high-pressure hydraulic device through oil pipes; the extrusion core consists of a threaded connector, a guide matching section and an extrusion section with a taper end, wherein the threaded connector is fixedly connected with the cylinder piston rod through the cylinder core connector, so that the hydraulic cylinder and the extrusion core are movably connected into a whole; the core guide sleeve is matched with the extrusion section through the connector core guide sleeve fixing plate to form a positioning pipe, the inner diameter of the medium-sized core guide sleeve is larger than the diameter of the guide matching section of the extrusion core, the extrusion core is fixedly connected with the cylinder piston rod through the threaded connection section, a core cooling water inlet and outlet are formed in the threaded connection section, and a water flow circulation system is formed between the core cooling water inlet and outlet and the cylinder core connector and the die insert respectively; the die insert front end is connected to the die casting by an extrusion core connector.
As a preferable technical scheme of the invention, the taper on the extrusion section of the tapered end is set at 4-8 degrees.
As a preferable technical scheme of the invention, the clearance between the core guide sleeve and the extrusion core of the guide matching section is 0.03 mm-0.05 mm.
The beneficial effects achieved by the invention are as follows: the invention has simple structure, and can realize the local extrusion function only by locally changing the existing die casting die and die casting machine. The device is adopted to extrude the product at the thick-wall part of the product before the product is completely solidified, and the incompletely solidified liquid metal is extruded into the region needing feeding through extrusion, so that the problem of shrinkage cavity is solved, the porosity of the product can be effectively reduced, the compactness of the product is improved, the internal quality of the product is further improved, and the requirement of industrial production is met.
The utility model provides an extrusion core and hydro-cylinder piston rod are through threaded connection's structural design, simple structure, and extrusion core carries out split type design with the sleeve pipe, easily makes, and overall structure cost is lower, is convenient for maintain and change single part when the part produces wearing and tearing or damage, practices thrift the cost, improves economic benefits, can satisfy the local extruded operation requirement of mould completely.
The utility model discloses in the extrusion core by threaded connection section, direction cooperation section and take the extrusion section three sections of tapering end to constitute, and direction cooperation section diameter is greater than extrusion section diameter, utilizes this kind of specific shape can effectively prevent or reduce the extrusion core because the deformation that repeated extrusion action produced, improves or prolongs the life of extrusion core. And set up the tapering of 4~8 at the tip of extrusion core and can reduce the tight power of alloy liquid to the package of extrusion core on the one hand, prevent to extrude the core and lead to the fact the deformation at this position of product because of bonding liquid metal phenomenon, on the other hand can reduce the drawing back pulling force of hydro-cylinder piston rod, further improve work efficiency and the life of extrusion round pin.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall exterior overall construction of the present invention;
Reference numerals in the drawings: 1. an extrusion device; 11. a hydraulic cylinder; 12. a cylinder piston rod; 13. an oil cylinder core connector; 14. extruding the core; 15. a core cooling water inlet and outlet; 16. a connector core guide sleeve fixing plate; 17. a die insert; 18. a core guide sleeve; 19. extruding the core connector; 110. an oil inlet nozzle; 2. and (5) die casting.
Detailed Description
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly fixed and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Examples: as shown in fig. 1-2, the present invention provides a local extrusion device of a die casting die, comprising a die casting 2 to be extruded locally and an extrusion device 1 for extruding the die casting 2, wherein the extrusion device 1 takes the direction of the extrusion device 1 approaching the die casting 2 as the front, and the extrusion device 1 comprises an extrusion core 14, a core guide sleeve 18 sleeved outside the extrusion core 14 and fixed in a die insert 17, an oil cylinder piston rod 12 fixedly connected with the rear end of the extrusion core 14, and a hydraulic oil cylinder 11 for driving the oil cylinder piston rod 12; the extrusion core 14 consists of a threaded connector, a guiding matching section and an extrusion section with a taper end; the core guide sleeve 18 is matched with the extrusion section through the connector core guide sleeve fixing plate 16 to form a positioning pipe, the inner diameter of the medium-sized core guide sleeve 18 is larger than the diameter of the guide matching section of the extrusion core, the extrusion core 14 is fixedly connected with the cylinder piston rod 12 through a threaded connection section, a core cooling water inlet and outlet 15 is arranged on the threaded connection section, and a water flow circulation system is formed between the core cooling water inlet and outlet 15 and the cylinder core connector 13 and the die insert 17 respectively; the front end portion of the die insert 17 is connected to the die casting 2 through an extrusion core connector 19; the utility model discloses in the extrusion core 14 by threaded connection section, direction cooperation section and take the extrusion section three sections of tapering end to constitute, and direction cooperation section diameter is greater than extrusion section diameter, utilizes this kind of specific shape can effectively prevent or reduce the extrusion core because the deformation that repeated extrusion action produced, improves or prolongs the life of extrusion core.
The cylinder piston rod 12 and the threaded connection section are fixedly connected through the cylinder core connector 13, so that the hydraulic cylinder 11 and the extrusion core 14 are movably connected into a whole, the extrusion core 14 and the cylinder piston rod 12 are of a threaded connection structural design, the structure is simple, the extrusion core 14 and the core guide sleeve 18 are of a split type design, the manufacturing is easy, the overall structural cost is low, the maintenance and replacement of single parts are convenient when the parts are worn or damaged, the cost is saved, the economic benefit is improved, and the use requirement of the local extrusion of a die can be completely met.
The taper on the extrusion section of the tapered end is set at 4-8 degrees, so that the packing force of alloy liquid on the extrusion core can be reduced, the extrusion core is prevented from deforming at the part of the product due to the phenomenon of bonding liquid metal, the drawing pull force of the cylinder piston rod can be reduced, and the working efficiency and the service life of the extrusion pin are further improved.
The gap between the core guide sleeve 18 and the extrusion core 14 of the guide matching section is 0.03 mm-0.05 mm; the hydraulic cylinder 11 is provided with an oil inlet nozzle 110, and the oil inlet nozzle 110 comprises an oil inlet and an oil outlet which are connected with a high-pressure hydraulic device through an oil pipe.
The utility model discloses a design is different from extrusion die, does not need the dedicated extruder of cooperation, only need carry out local change and can realize local extrusion function on current die casting die and die casting machine. The device is adopted to extrude the product at the thick-wall part of the product before the product is completely solidified, and the incompletely solidified liquid metal is extruded into the region needing feeding through extrusion, so that the problem of shrinkage cavity is solved, the porosity of the product can be effectively reduced, the compactness of the product is improved, the internal quality of the product is further improved, and the requirement of industrial production is met.
Working principle: according to the invention, a high-pressure hydraulic device is connected to the outside of an oil inlet nozzle 110 on a hydraulic oil cylinder 11, parameters on the high-pressure hydraulic device are set, the high-pressure hydraulic device pushes an oil cylinder core connector 13 connected to the oil cylinder piston rod 12 to push a core guide sleeve 18 and an extrusion core 14 to generate high pressure so as to extrude a product wall thickness forming part to achieve the compactness of the product wall thickness part, the porosity of the product is ensured, a shrinkage hole in a die-casting wall thickness reducing position is reduced, a water inlet in a core cooling water inlet and outlet 15 is connected with cooling circulating water, the circulating water flows out from a core cooling water outlet through the head of the extrusion core 14, the temperature of the head of the extrusion core 14 is taken away through water flow, the phenomenon that the extrusion core 14 cannot be pulled out due to aluminum sticking is avoided, the fact that the extrusion core 14 draws a die in the hole due to high temperature is reduced, the fact that the fit clearance between the extrusion core 14 and the extrusion core 1418 is reduced due to thermal expansion and shrinkage is reduced, and production interruption is caused by die locking is avoided. The cooling water is connected in, so that the occurrence of faults can be greatly reduced, and the service life of the extrusion core is prolonged.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The local extrusion device of the die casting die comprises a die casting (2) needing local extrusion and an extrusion device (1) for extruding the die casting, and is characterized in that the direction of the extrusion device (1) close to the die casting (2) is taken as the front, the extrusion device (1) comprises an extrusion core (14), a core guide sleeve (18) sleeved outside the extrusion core (14) and fixed in a die insert (17), an oil cylinder piston rod (12) fixedly connected with the rear end of the extrusion core (14), and a hydraulic oil cylinder (11) for driving the oil cylinder piston rod (12), an oil inlet oil nozzle (110) is arranged on the hydraulic oil cylinder (11), the oil inlet oil nozzle (110) comprises an oil inlet and an oil outlet, and the oil inlet and the oil outlet are connected with a high-pressure hydraulic device through an oil pipe; the extrusion core (14) consists of a threaded connector, a guide matching section and an extrusion section with a taper end, wherein the threaded connector and an oil cylinder piston rod (12) are fixedly connected through an oil cylinder core connector (13), so that the hydraulic oil cylinder (11) and the extrusion core (14) are movably connected into a whole; the core guide sleeve (18) is matched with the extrusion section through the connector core guide sleeve fixing plate (16) to form a positioning pipe, the inner diameter of the core guide sleeve (18) is larger than the diameter of the guide matching section of the extrusion core, the extrusion core (14) is fixedly connected with the cylinder piston rod (12) through a threaded connector, a core cooling water inlet and outlet (15) is arranged on the threaded connector, and a water flow circulation system is formed between the core cooling water inlet and outlet (15) and the cylinder core connector (13) and between the core cooling water inlet and outlet (15) and the mould insert (17); the front end part of the die insert (17) is connected to the die casting (2) through an extrusion core connector (19), the taper on the extrusion section of the tapered end is set at 4-8 degrees, and the gap between the core guide sleeve (18) and the extrusion core (14) of the guide matching section is 0.03-0.05 mm;
The water inlet in the core cooling water inlet and outlet (15) is connected with cooling circulating water, the circulating water flows out from the core cooling water outlet through the head of the extrusion core (14), and the temperature of the head of the extrusion core (14) is taken away by water flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663277.0A CN108580840B (en) | 2018-06-25 | 2018-06-25 | Local extrusion device of die casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663277.0A CN108580840B (en) | 2018-06-25 | 2018-06-25 | Local extrusion device of die casting die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108580840A CN108580840A (en) | 2018-09-28 |
| CN108580840B true CN108580840B (en) | 2024-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810663277.0A Active CN108580840B (en) | 2018-06-25 | 2018-06-25 | Local extrusion device of die casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108580840B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04111957A (en) * | 1990-09-03 | 1992-04-13 | Ube Ind Ltd | Feeder head rod device for injection forming apparatus |
| JPH10131913A (en) * | 1996-10-29 | 1998-05-22 | Nanbu:Kk | Cylinder device |
| CN201720411U (en) * | 2010-07-28 | 2011-01-26 | 重庆东科模具制造有限公司 | Die-casting die provided with local pressing device |
| CN202639274U (en) * | 2012-04-16 | 2013-01-02 | 启东凯雷达模具制造有限公司 | Extrusion mechanism for controlling porosity of die cast mold core |
| JP2014057995A (en) * | 2012-09-19 | 2014-04-03 | Ryobi Ltd | Chill vent, and die casting process |
| CN203649359U (en) * | 2013-12-27 | 2014-06-18 | 襄阳美利信科技有限责任公司 | Squeezing mechanism for pressure casting |
| CN104550831A (en) * | 2014-12-22 | 2015-04-29 | 苏州广型模具有限公司 | Core-pulling and extruding mechanism for die-casting mould |
| CN204603269U (en) * | 2015-04-28 | 2015-09-02 | 苏州广型模具有限公司 | A kind of die casting compression assemblies with refrigerating function |
| CN106141137A (en) * | 2016-09-22 | 2016-11-23 | 浙江工业大学 | A kind of side core-pulling extruding die casting equipment and production method |
| CN206305420U (en) * | 2016-12-20 | 2017-07-07 | 南京金城精密机械有限公司 | A kind of local extrusion device of die casting |
| CN208357769U (en) * | 2018-06-25 | 2019-01-11 | 上海东岩机械股份有限公司 | A kind of local extrusion device of die casting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101048123B1 (en) * | 2008-06-11 | 2011-07-08 | 현대자동차주식회사 | Core pin unit for die casting |
-
2018
- 2018-06-25 CN CN201810663277.0A patent/CN108580840B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04111957A (en) * | 1990-09-03 | 1992-04-13 | Ube Ind Ltd | Feeder head rod device for injection forming apparatus |
| JPH10131913A (en) * | 1996-10-29 | 1998-05-22 | Nanbu:Kk | Cylinder device |
| CN201720411U (en) * | 2010-07-28 | 2011-01-26 | 重庆东科模具制造有限公司 | Die-casting die provided with local pressing device |
| CN202639274U (en) * | 2012-04-16 | 2013-01-02 | 启东凯雷达模具制造有限公司 | Extrusion mechanism for controlling porosity of die cast mold core |
| JP2014057995A (en) * | 2012-09-19 | 2014-04-03 | Ryobi Ltd | Chill vent, and die casting process |
| CN203649359U (en) * | 2013-12-27 | 2014-06-18 | 襄阳美利信科技有限责任公司 | Squeezing mechanism for pressure casting |
| CN104550831A (en) * | 2014-12-22 | 2015-04-29 | 苏州广型模具有限公司 | Core-pulling and extruding mechanism for die-casting mould |
| CN204603269U (en) * | 2015-04-28 | 2015-09-02 | 苏州广型模具有限公司 | A kind of die casting compression assemblies with refrigerating function |
| CN106141137A (en) * | 2016-09-22 | 2016-11-23 | 浙江工业大学 | A kind of side core-pulling extruding die casting equipment and production method |
| CN206305420U (en) * | 2016-12-20 | 2017-07-07 | 南京金城精密机械有限公司 | A kind of local extrusion device of die casting |
| CN208357769U (en) * | 2018-06-25 | 2019-01-11 | 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 |
|---|---|
| CN108580840A (en) | 2018-09-28 |
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