CN108580840A - A kind of local extrusion device of die casting - Google Patents
A kind of local extrusion device of die casting Download PDFInfo
- Publication number
- CN108580840A CN108580840A CN201810663277.0A CN201810663277A CN108580840A CN 108580840 A CN108580840 A CN 108580840A CN 201810663277 A CN201810663277 A CN 201810663277A CN 108580840 A CN108580840 A CN 108580840A
- Authority
- CN
- China
- Prior art keywords
- core
- guide sleeve
- die casting
- extruding
- piston rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Abstract
The invention discloses a kind of local extrusion devices of die casting, including the pressurizing unit for needing the die casting locally squeezed and being squeezed it, using pressurizing unit close to the direction of die casting as front, the pressurizing unit includes squeezing core, being set in the core guide sleeve outside extruding core and being fixed in die insert, the hydraulic cylinder of the cylinder piston rod and drive cylinder piston rod that are fixedly connected with extruding core rear end；Core section and the extruded segment with taper end with screw thread coupling, guiding of squeezing forms；The core guide sleeve matches to form a positioning pipe with extruded segment by connector core guide sleeve fixed plate, the extruding core is connected through a screw thread section and is fixedly connected with cylinder piston rod, and core cooling water entrance is provided in threaded connection section, a water circulation system is formed between the core cooling water entrance and oil cylinder core connector, die insert.
Description
Technical field
The present invention relates to a kind of local extrusion devices of die casting, belong to die casting technical field.
Background technology
The operation principle of die casting is that liquid or semi-solid-state metal under high pressure effect, are at a high speed filled into compression mod
Have in cavity, and quickly solidifies and obtain a kind of method of casting under the effect of the pressure.
In press casting procedure, general wall thickness can generate hole because of contraction during being in liquid metal solidification in inside
Hole, we term it shrinkage cavities, loose for these holes.Shrinkage cavity can have an impact the mechanical performance of product, reduce the performance of part,
Even casting is made to scrap.More demanding and local wall thickness the part for some internal soundnesses, such as Automobile Part large size shell, by
, site area of wall thickness thicker in its local wall thickness be larger or product fills type dead angle position, is easier at wall thickness position
Internal defect or stomata are generated, processing performance is reduced, reduces air-tightness, the qualification rate of product is made to be greatly reduced.Therefore, with production
The increasingly raising of product technological requirement, the porosity for reducing press casting procedure medium casting are our urgent problems.
Invention content
That the technical problem to be solved by the present invention is to its existing local wall thickness is thicker, wall thickness site area is larger or
Product fills type dead angle position, is easier to generate internal defect or stomata at wall thickness position, reduction processing performance, reduction are airtight
Property, the defect for making the qualification rate of product be greatly reduced now provides a kind of pressure for reducing casting porosity, improving Internal Quality of Cast
The local extrusion device of casting mould, to solve the above problems.
In order to solve the above technical problem, the present invention provides the following technical solutions：
The present invention provides a kind of local extrusion device of die casting, including needs the die casting locally squeezed and squeezed to it
The pressurizing unit of pressure, using pressurizing unit close to the direction of die casting as front, the pressurizing unit include squeeze core, be set in
Outer core and the core guide sleeve being fixed in die insert, the cylinder piston rod being fixedly connected with extruding core rear end are squeezed,
And the hydraulic cylinder of drive cylinder piston rod, oil inlet oil nozzle is provided on the hydraulic cylinder, and oil inlet oil nozzle includes oil inlet
And oil outlet, oil inlet connect high pressure hydraulics with oil outlet by oil pipe；The extruding core is by screw thread coupling, guiding
Section and the extruded segment composition with taper end, threaded connection section is coordinated to be fixed by oil cylinder core connector with cylinder piston rod
Connection, to which hydraulic cylinder and extruding core flexible connection to be integral；The core guide sleeve is led by connector core
Set fixed plate matches to form a positioning pipe with extruded segment, and the interior diameter of middle core guide sleeve is more than the guiding cooperation for squeezing core
The diameter of section, the extruding core is connected through a screw thread section and is fixedly connected with cylinder piston rod, and is arranged in threaded connection section
There are core cooling water entrance, the core cooling water entrance to be formed between oil cylinder core connector, die insert respectively
One water circulation system；Die insert front end is connected to die casting by squeezing core connector.
As a preferred technical solution of the present invention, it is arranged at 4 ~ 8 ° with the taper in the extruded segment of taper end.
As a preferred technical solution of the present invention, between the core guide sleeve and the extruding core of guiding cooperation section
Gap be 0.03mm ~ 0.05mm.
The advantageous effect that is reached of the present invention is：The configuration of the present invention is simple, it is only necessary in existing die casting and die casting machine
Locally local squeeze function can be realized in change for upper progress.Using this device product heavy wall position product not completely solidify before
It is squeezed, the liquid metals not solidified completely is squeezed into the region for needing feeding by squeezing, is asked to solve shrinkage cavity
Topic, can effectively reduce the porosity of product, improve the compactness of product, and then improve the internal soundness of product, meet industry
The demand of metaplasia production.
Extruding core and cylinder piston rod during this is practical are the structure designs being connected through a screw thread, simple in structure, and
Extruding core carries out split-type design with casing, and easily fabricated, overall structure cost is relatively low, when part generates abrasion or damages just
It is cost-effective in repairing and replace to single part, it increases economic efficiency, the use that mold locally squeezes can be met completely
It is required that.
This practical middle extruding core section and three sections of groups of extruded segment with taper end with threaded connection section, guiding
At, and be oriented to cooperation section diameter and be more than extruded segment diameter, it can effectively prevent or reduce extrusion pressing type using this specific shape
The deformation that core is generated due to the extruding action repeated, improves or extends the service life for squeezing core.And squeezing core
4 ~ 8 ° of end set taper on the one hand can reduce alloy liquid to squeeze core package power, prevent squeeze core due to
It bonds liquid metal phenomenon and causes the deformation at the product position, on the other hand can reduce the pulling force of drawing back of cylinder piston rod,
Further increase the service life of working efficiency and squeeze pin.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings：
Fig. 1 is that overall structure of the present invention decomposes broken away view；
Fig. 2 is integral outer overall structure diagram of the present invention；
Figure label：1, pressurizing unit；11, hydraulic cylinder；12, cylinder piston rod；13, oil cylinder core connector；14, extrusion pressing type
Core；15, core cooling water entrance；16, connector core guide sleeve fixed plate；17, die insert；18, core guide sleeve；19、
Squeeze core connector；110, oil inlet oil nozzle；2, die casting.
Specific implementation mode
In the description of the present invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal"
Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
In the description of the present invention, it is also necessary to explanation is fixed and is limited unless otherwise specific, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment：As shown in Figs. 1-2, the present invention provides a kind of local extrusion device of die casting, including needs part
The die casting 2 of extruding and the pressurizing unit 1 that it is squeezed, using pressurizing unit 1 close to the direction of die casting 2 as front, institute
It includes squeezing core 14, being set in the core guide sleeve for squeezing that core 14 is outer and is fixed in die insert 17 to state pressurizing unit 1
18, with the hydraulic cylinder 11 of the cylinder piston rod 12 that squeezes core 14 rear end and be fixedly connected, and drive cylinder piston rod 12；Institute
Extruding core 14 section and extruded segment with taper end with screw thread coupling, guiding is stated to form；The core guide sleeve 18
It matches to form a positioning pipe with extruded segment by connector core guide sleeve fixed plate 16, the interior diameter of middle core guide sleeve 18 is big
In the diameter for the guiding cooperation section for squeezing core, the extruding core 14, which is connected through a screw thread section and is fixed with cylinder piston rod 12, to be connected
Connect, and be provided with core cooling water entrance 15 in threaded connection section, the core cooling water entrance 15 respectively with oil cylinder
A water circulation system is formed between core connector 13, die insert 17；17 front end of die insert is by squeezing core
Connector 19 is connected to die casting 2；This practical middle extrudings core 14 section and with taper end with threaded connection section, guiding
Three sections of extruded segment composition, and be oriented to cooperation section diameter and be more than extruded segment diameter, can effectively be prevented using this specific shape
Only or reduction squeezes the deformation that core is generated due to the extruding action of repetition, raising or the service life for extending extruding core.
Cylinder piston rod 12 is fixedly connected by oil cylinder core connector 13 with threaded connection section, thus by hydraulic cylinder
11 are integral with the flexible connection of core 14 is squeezed, and it is that the structure being connected through a screw thread is set to squeeze core 14 with cylinder piston rod 12
Meter, it is simple in structure, and squeeze core 14 and core guide sleeve 18 and carry out split-type design, it is easily fabricated, overall structure cost compared with
It is low, it is cost-effective convenient for single part is repaired and replaced when part generates abrasion or damage, it increases economic efficiency, it is complete
The requirement that mold locally squeezes can be met entirely.
It is arranged at 4 ~ 8 ° with the taper in the extruded segment of taper end, on the one hand can reduces alloy liquid to squeezing core
Package power prevents from squeezing the deformation that core causes the product position due to bonding liquid metal phenomenon, on the other hand can subtract
Few cylinder piston rod draws back pulling force, further increases the service life of working efficiency and squeeze pin.
The core guide sleeve 18 and the gap squeezed between core 14 for being oriented to cooperation section are 0.03mm ~ 0.05mm；Institute
It states and is provided with oil inlet oil nozzle 110 on hydraulic cylinder 11, oil inlet oil nozzle 110 includes oil inlet and oil outlet, oil inlet and oil outlet
High pressure hydraulics are connected by oil pipe.
This practical design is different from extrusion die, need not coordinate dedicated extruder, it is only necessary in existing compression mod
Part change is carried out on tool and die casting machine, and local squeeze function can be realized.Using this device product heavy wall position product not
It is squeezed before solidification completely, the liquid metals not solidified completely is squeezed into the region for needing feeding by squeezing, to
Shrinkage Problem is solved, the porosity of product can be effectively reduced, improves the compactness of product, and then improve the inside matter of product
Amount, meets the needs of industrialized production.
Operation principle：The present invention outside the oil inlet on the oil inlet oil nozzle 110 on hydraulic cylinder 11 first by accessing high pressure
Hydraulic device, and the parameter on high pressure hydraulics is configured, high pressure hydraulics are made by pushing cylinder piston rod 12
The oil cylinder core connector 13 that must be connected on cylinder piston rod 12, which pushes core guide sleeve 18 and squeezes core 14, generates high pressure
Product wall thickness molding position is squeezed to reach the consistency at product wall thickness position, ensures product porosity, reduce die casting
Subtract the contracting stomata of wall thickness position, the water inlet in core cooling water entrance 15 accesses cooling circulating water, and it is right which passes through
It squeezes 14 head of core and is flowed out from core cooling water outlet mouth, 14 head temperature of core is squeezed to take away by flow, prevents from gluing
Aluminium causes extruding core 14 that can not extract out, and reducing extruding core 14, drawing-die, reduction squeeze core 14 because of heat in hole caused by high temperature
Shrinkage of rising causes to reduce with the fit clearance for squeezing core 1418, to cause stuck to cause production disruption.Accessing cooling water can
The generation of such failure is greatly decreased, extends the service life for squeezing core.
Finally it should be noted that：It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution recorded in foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (1)
1. a kind of local extrusion device of die casting, including need the die casting locally squeezed（2）With it is squeezed
Pressurizing unit（1）, which is characterized in that with pressurizing unit（1）Close to die casting（2）Direction be front, the pressurizing unit（1）
Including squeezing core（14）, be set in extruding core（14）Outside and it is fixed on die insert（17）Interior core guide sleeve（18）、
With extruding core（14）The cylinder piston rod that rear end is fixedly connected（12）, and drive cylinder piston rod（12）Hydraulic cylinder
（11）, the hydraulic cylinder（11）On be provided with oil inlet oil nozzle（110）, oil inlet oil nozzle（110）Including oil inlet and oil outlet, into
Hydraulic fluid port connects high pressure hydraulics with oil outlet by oil pipe；The extruding core（14）The section with screw thread coupling, guiding
And the extruded segment composition with taper end, the threaded connection section and cylinder piston rod（12）Pass through oil cylinder core connector（13）
It is fixedly connected, thus by hydraulic cylinder（11）With extruding core（14）Flexible connection is integral；The core guide sleeve（18）
Pass through connector core guide sleeve fixed plate（16）It matches to form a positioning pipe with extruded segment, middle core guide sleeve（18）It is interior straight
Diameter is more than the diameter for the guiding cooperation section for squeezing core, the extruding core（14）It is connected through a screw thread section and cylinder piston rod
（12）It is fixedly connected, and is provided with core cooling water entrance in threaded connection section（15）, the core cooling water entrance
（15）Respectively with oil cylinder core connector（13）, die insert（17）Between formed a water circulation system；Die insert
（17）Front end is by squeezing core connector（19）It is connected to die casting（2）, with the taper setting in the extruded segment of taper end
At 4 ~ 8 °, the core guide sleeve（18）With the extruding core for being oriented to cooperation section（14）Between gap be 0.03mm ~ 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663277.0A CN108580840A (en) | 2018-06-25 | 2018-06-25 | A kind of local extrusion device of die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663277.0A CN108580840A (en) | 2018-06-25 | 2018-06-25 | A kind of local extrusion device of die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108580840A true CN108580840A (en) | 2018-09-28 |
Family
ID=63633756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810663277.0A Pending CN108580840A (en) | 2018-06-25 | 2018-06-25 | A kind of local extrusion device of die casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108580840A (en) |
Citations (12)
| 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 |
| US20090308563A1 (en) * | 2008-06-11 | 2009-12-17 | Hyundai Motor Company | Core pin unit for die casting |
| 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 |
-
2018
- 2018-06-25 CN CN201810663277.0A patent/CN108580840A/en active Pending
Patent Citations (12)
| 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 |
| US20090308563A1 (en) * | 2008-06-11 | 2009-12-17 | Hyundai Motor Company | Core pin unit for die casting |
| 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 |
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