CN208357769U - A kind of local extrusion device of die casting - Google Patents
A kind of local extrusion device of die casting Download PDFInfo
- Publication number
- CN208357769U CN208357769U CN201820979592.XU CN201820979592U CN208357769U CN 208357769 U CN208357769 U CN 208357769U CN 201820979592 U CN201820979592 U CN 201820979592U CN 208357769 U CN208357769 U CN 208357769U
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- type core
- extrusion pressing
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- die casting
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Abstract
The utility model discloses a kind of local extrusion devices of die casting, including the die casting for needing locally to squeeze and the pressurizing unit squeezed it, using pressurizing unit close to the direction of die casting as front, the pressurizing unit includes extrusion pressing type core, is set in outside extrusion pressing type core and the hydraulic cylinder of the type core guide sleeve being fixed in die insert, the cylinder piston rod and drive cylinder piston rod that are fixedly connected with extrusion pressing type core rear end；The extrusion pressing type core section and extruded segment with taper end with screw thread coupling, guiding form；The type core guide sleeve matches to form a positioning pipe with extruded segment by connector type core guide sleeve fixed plate, the extrusion pressing type core is connected through a screw thread section and is fixedly connected with cylinder piston rod, and type core cooling water entrance is provided in threaded connection section, a water circulation system is formed between the type core cooling water entrance and oil cylinder type core connector, die insert.
Description
Technical field
The utility model relates to a kind of local extrusion devices of die casting, belong to die casting technical field.
Background technique
The working 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
In tool type chamber, and a kind of method of casting is quickly solidified and obtained under the effect of the pressure.
In press casting procedure, general wall thickness can generate hole in inside because of contraction during being in liquid metal solidification
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 scrap casting.More demanding for some internal soundnesses and local wall thickness part, 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 greatly reduced.Therefore, with production
The increasingly raising that product technique requires, the porosity for reducing press casting procedure medium casting is our urgent problems.
Utility model content
The technical problems to be solved in the utility model be 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, reduces processing performance, reduces
Air-tightness, the defect that the qualification rate of product is greatly reduced now provide a kind of reduction casting porosity, improve Internal Quality of Cast
Die casting local extrusion device, to solve the above problems.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
The utility model provides a kind of local extrusion device of die casting, the die casting including needing locally to squeeze and right
Its pressurizing unit squeezed, using pressurizing unit close to the direction of die casting as front, the pressurizing unit includes extrusion pressing type
Core is set in extrusion pressing type core outside and the type core guide sleeve being fixed in die insert, the oil being fixedly connected with extrusion pressing type core rear end
The hydraulic cylinder of cylinder piston rod and drive cylinder piston rod is provided with oil inlet oil nozzle, oil inlet oil nozzle packet on the hydraulic cylinder
Oil inlet and oil outlet are included, oil inlet connects high pressure hydraulics by oil pipe with oil outlet；The extrusion pressing type core is connected by screw thread
Device, guiding cooperation section and the extruded segment composition with taper end are connect, threaded connection section is and cylinder piston rod passes through oil cylinder type core
Connector is fixedly connected, so that hydraulic cylinder and the flexible connection of extrusion pressing type core are integral；The type core guide sleeve passes through company
It connects type core guide sleeve fixed plate to match to form a positioning pipe with extruded segment, the interior diameter of medium-sized core guide sleeve is greater than extrusion pressing type core
Guiding cooperation section diameter, the extrusion pressing type core is connected through a screw thread section and is fixedly connected with cylinder piston rod, and in screw thread company
It connects and is provided with type core cooling water entrance in section, the type core cooling water entrance is inlayed with oil cylinder type core connector, mold respectively
A water circulation system is formed between block；Die insert front end is connected to die casting by extrusion pressing type core connector.
As a kind of optimal technical scheme of the utility model, it is arranged with the taper in the extruded segment of taper end at 4 ~ 8 °.
As a kind of optimal technical scheme of the utility model, the extrusion pressing type core of the type core guide sleeve and guiding cooperation section
Between gap be 0.03mm ~ 0.05mm.
The utility model beneficial effect achieved is: the utility model structure is simple, it is only necessary in existing die casting
Local squeeze function can be realized with part change is carried out on die casting machine.It is not complete in product at product heavy wall position using this device
It is squeezed before full solidification, the liquid metals not solidified completely is squeezed into the region for needing feeding by squeezing, to solve
Certainly Shrinkage Problem can be effectively reduced the porosity of product, improve the compactness of product, and then improve the internal soundness of product,
Meets the needs of industrialized production.
Extrusion pressing type core and cylinder piston rod during this is practical are that the structure being connected through a screw thread designs, and structure is simple, and
Extrusion pressing type core and casing carry out split-type design, and easily fabricated, cost is relatively low for overall structure, when part generates abrasion or damages just
In repairing and replacing to single part, save the cost is increased economic efficiency, and can meet the use that mold locally squeezes completely
It is required that.
This practical middle extrusion pressing type 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 greater than extruded segment diameter, extrusion pressing type can be effectively prevent or reduced using this specific shape
Core improves or extends the service life of extrusion pressing type core due to the deformation that duplicate extruding acts and generates.And in extrusion pressing type core
End 4 ~ 8 ° of taper be set on the one hand can reduce alloy liquid to the package power of extrusion pressing type core, prevent extrusion pressing type core due to
Bonding liquid metal phenomenon and cause 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.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is that the utility model overall structure decomposes broken away view；
Fig. 2 is the utility model integral outer overall structure diagram；
Figure label: 1, pressurizing unit；11, hydraulic cylinder；12, cylinder piston rod；13, oil cylinder type core connector；14, it squeezes
Die mould core；15, type core cooling water entrance；16, connector type core guide sleeve fixed plate；17, die insert；18, type core guide sleeve；
19, extrusion pressing type core connector；110, oil inlet oil nozzle；2, die casting.
Specific embodiment
In the description of the present invention, it should be noted that the instructions such as term "vertical", "upper", "lower", "horizontal"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should also be noted that, " being set unless otherwise specific fixed and restriction, term
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment: as shown in Figs. 1-2, the utility model provides a kind of local extrusion device of die casting, including needs
The die casting 2 locally squeezed and the pressurizing unit 1 that it is squeezed, before being close to the direction of die casting 2 with pressurizing unit 1
Just, the pressurizing unit 1 includes extrusion pressing type core 14, is set in extrusion pressing type core 14 outside and the type core being fixed in die insert 17 is led
To set 18, the cylinder piston rod 12 being fixedly connected with 14 rear end of extrusion pressing type core, and the hydraulic cylinder of drive cylinder piston rod 12
11；The extrusion pressing type core 14 section and extruded segment with taper end with screw thread coupling, guiding form；The type core guiding
Set 18 matches to form a positioning pipe with extruded segment by connector type core guide sleeve fixed plate 16, medium-sized core guide sleeve 18 it is interior directly
Diameter is greater than the diameter of the guiding cooperation section of extrusion pressing type core, and the extrusion pressing type core 14 is connected through a screw thread section and cylinder piston rod 12 is solid
Fixed connection, and type core cooling water entrance 15 is provided in threaded connection section, the type core cooling water entrance 15 respectively with
A water circulation system is formed between oil cylinder type core connector 13, die insert 17；17 front end of die insert passes through extruding
Type core connector 19 is connected to die casting 2；This practical middle extrusion pressing type core 14 section and with taper with threaded connection section, guiding
Three sections of extruded segment compositions of end, and be oriented to cooperation section diameter and be greater than extruded segment diameter, can have using this specific shape
Effect prevent or reduces extrusion pressing type core due to duplicate extruding act and generate deformation, improve or extension extrusion pressing type core use the longevity
Life.
Cylinder piston rod 12 passes through oil cylinder type core connector 13 with threaded connection section and is fixedly connected, thus by hydraulic cylinder
11 and extrusion pressing type core 14 flexible connection be integral, extrusion pressing type core 14 is that the structure being connected through a screw thread is set with cylinder piston rod 12
Meter, structure is simple, and extrusion pressing type core 14 and type core guide sleeve 18 carry out split-type design, easily fabricated, overall structure cost compared with
Low, convenient for single part is repaired and replaced when part generates abrasion or damage, save the cost is increased economic efficiency, complete
The requirement that mold locally squeezes can be met entirely.
It is arranged with the taper in the extruded segment of taper end at 4 ~ 8 °, on the one hand can reduce alloy liquid to extrusion pressing type core
Package power is prevented extrusion pressing type core from being caused the deformation at the product position due to bonding liquid metal phenomenon, on the other hand can subtracted
Few cylinder piston rod draws back pulling force, further increases the service life of working efficiency and squeeze pin.
Gap between the type core guide sleeve 18 and the extrusion pressing type core 14 of guiding cooperation section is 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, does not need to cooperate dedicated extruder, it is only necessary in existing compression mod
Part change is carried out on tool and die casting machine can be realized local squeeze function.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, thus
Shrinkage Problem is solved, can be effectively reduced the porosity of product, improves the compactness of product, and then improve the inside matter of product
Amount, meets the needs of industrialized production.
Working principle: the utility model passes through first to be accessed outside the oil inlet on the oil inlet oil nozzle 110 on hydraulic cylinder 11
High pressure hydraulics, and the parameter on high pressure hydraulics is configured, high pressure hydraulics are by pushing cylinder piston rod
12, so that the 13 promotion type core guide sleeve 18 of oil cylinder type core connector and extrusion pressing type core 14 that are connected on cylinder piston rod 12 generate
High pressure squeezes product wall thickness forming part to reach the consistency at product wall thickness position, guarantees product porosity, reduces
Die casting subtracts the contracting stomata of wall thickness position, and the water inlet in type core cooling water entrance 15 accesses cooling circulating water, and the recirculated water is logical
It crosses to 14 head of extrusion pressing type core and is flowed out from type core cooling water outlet mouth, 14 head temperature of extrusion pressing type core is taken away by water flow, is prevented
Only gluing aluminium causes extrusion pressing type core 14 that can not extract out, reduces extrusion pressing type core 14 because of drawing-die in hole caused by high temperature, reduces extrusion pressing type core 14
Because rising-heat contracting-cold causes to reduce with the fit clearance of extrusion pressing type core 1418, to cause stuck to cause production disruption.Access cooling
The generation of such failure can be greatly decreased in water, extend the service life of extrusion pressing type core.
Finally, it should be noted that the above is only the preferred embodiment of the utility model, it is not limited to practical
It is novel, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all include
It is within the protection scope of the utility model.
Claims (1)
1. a kind of local extrusion device of die casting, including the die casting (2) for needing locally to squeeze and it is squeezed
Pressurizing unit (1), which is characterized in that using the direction of pressurizing unit (1) close die casting (2) as front, the pressurizing unit (1)
Including extrusion pressing type core (14), the type core guide sleeve (18) for being set in extrusion pressing type core (14) outside and being fixed in die insert (17),
The cylinder piston rod (12) being fixedly connected with extrusion pressing type core (14) rear end, and the hydraulic cylinder of drive cylinder piston rod (12)
(11), it being provided with oil inlet oil nozzle (110) on the hydraulic cylinder (11), oil inlet oil nozzle (110) includes oil inlet and oil outlet, into
Hydraulic fluid port connects high pressure hydraulics by oil pipe with oil outlet；The extrusion pressing type core (14) 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 type core connector (13)
It is fixedly connected, so that hydraulic cylinder (11) and extrusion pressing type core (14) flexible connection are integral；The type core guide sleeve (18)
Match to form a positioning pipe with extruded segment by connector type core guide sleeve fixed plate (16), medium-sized core guide sleeve (18) it is interior straight
Diameter is greater than the diameter of the guiding cooperation section of extrusion pressing type core, and the extrusion pressing type core (14) is connected through a screw thread section and cylinder piston rod
(12) it is fixedly connected, and is provided with type core cooling water entrance (15) in threaded connection section, the type core cooling water entrance
(15) water circulation system is formed between oil cylinder type core connector (13), die insert (17) respectively；Die insert
(17) front end is connected to die casting (2) by extrusion pressing type core connector (19), with the taper setting in the extruded segment of taper end
At 4 ~ 8 °, the gap between the type core guide sleeve (18) and the extrusion pressing type core (14) of guiding cooperation section is 0.03mm ~ 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979592.XU CN208357769U (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 |
|---|---|---|---|
| CN201820979592.XU CN208357769U (en) | 2018-06-25 | 2018-06-25 | A kind of local extrusion device of die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208357769U true CN208357769U (en) | 2019-01-11 |
Family
ID=64926542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820979592.XU Active CN208357769U (en) | 2018-06-25 | 2018-06-25 | A kind of local extrusion device of die casting |
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| Country | Link |
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| CN (1) | CN208357769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110238364A (en) * | 2019-07-17 | 2019-09-17 | 大连亚明汽车部件股份有限公司 | Die casting ellipse cylinder apparatus |
| CN113798468A (en) * | 2021-08-30 | 2021-12-17 | 江苏宏马科技股份有限公司 | Die-casting die of self-priming engine cylinder head cover |
-
2018
- 2018-06-25 CN CN201820979592.XU patent/CN208357769U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110238364A (en) * | 2019-07-17 | 2019-09-17 | 大连亚明汽车部件股份有限公司 | Die casting ellipse cylinder apparatus |
| CN110238364B (en) * | 2019-07-17 | 2024-02-06 | 大连亚明汽车部件股份有限公司 | Elliptical cylinder device of die casting die |
| CN113798468A (en) * | 2021-08-30 | 2021-12-17 | 江苏宏马科技股份有限公司 | Die-casting die of self-priming engine cylinder head cover |
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