CN104759605B - Inhale vacuum pressing and casting mould in a kind of adjustable side of suction - Google Patents

Inhale vacuum pressing and casting mould in a kind of adjustable side of suction Download PDF

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Publication number
CN104759605B
CN104759605B CN201510216006.7A CN201510216006A CN104759605B CN 104759605 B CN104759605 B CN 104759605B CN 201510216006 A CN201510216006 A CN 201510216006A CN 104759605 B CN104759605 B CN 104759605B
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CN
China
Prior art keywords
mould
mold
runner
vacuum
arc
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Application number
CN201510216006.7A
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Chinese (zh)
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CN104759605A (en
Inventor
何涛
李燕
汪泽轩
杨勇
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上海工程技术大学
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Priority to CN201510216006.7A priority Critical patent/CN104759605B/en
Publication of CN104759605A publication Critical patent/CN104759605A/en
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Publication of CN104759605B publication Critical patent/CN104759605B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00Pressure casting; Vacuum casting
    • B22D18/06Vacuum casting, i.e. making use of vacuum to fill the mould

Abstract

The present invention relates to vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction, including mold, runner, middle mould, inner mold, lower mould and pedestal, lower mould has two arc section vacuum passages;Middle mould includes the depression matched with channel size and inner chamber that is raised and can assembling inner mold;Inner mold top is cylindrical shape, and bottom is peripheral uniform the entity of two sections of arc convex;Interconvertible cooling pad is provided with inner mold die cavity.Casting mould of the present invention, when producing different foundry goods, need to only change one or more in mold, runner, inner mold and cooling pad, need not open whole set of die, you can up to production effect, and time saving and energy saving province's material greatly reduces cost.

Description

Inhale vacuum pressing and casting mould in a kind of adjustable side of suction
Technical field
The present invention relates to vacuum pressing and casting technical field, inhales vacuum pressing and casting mould more particularly, to a kind of adjustable side of suction Tool.
Background technology
Vacuum sealed molding technology is formed at 20 century 70s, and be born vacuum casting process afterwards on this basis, The technique is widely applied in the quick cast of complex thin-wall component, is reduced while improving metal casting cavity filling energy Pore in foundry goods, improves the comprehensive mechanical property of foundry goods.
Precision-investment casting can produce precision, complicated part, after part forming, it is only necessary to which a small amount of processing no longer adds Work, so that it may as mechanical component, is the liquid metal forming technology of an excellent near-net-shape.It is applicable not only to multiple types The casting of the multiple alloys of type, and it is higher, no to produce complex-shaped, high temperature resistant, dimensional accuracy and surface quality requirements Foundry goods easy to process.
Vacuum fusible pattern hot investment casting combines the advantage of vacuum sealed molding technology and melted module precise casting technology, Ke Yisheng Output precision, complexity, high-quality, only need to process or not reprocess the part that directly can use on a small quantity, be suitable for producing in batches, Have broad application prospects.
At present both at home and abroad the research of vacuum fusible pattern hot investment casting is concentrated mainly on metal liquid fill type steady with fill type The aspects such as the cooling velocity of speed and foundry goods.Casting mould is for manufacturing the important process of fusible pattern equipment.Vacuum pressing and casting mould Tool is, it is ensured that molten metal is steady and be quickly full of casting mold, foundry goods homogenous distribution, and convenient adjusts the cold of filling velocity and foundry goods But speed.Additionally, in actual production, often produce a kind of product and be required for out one set of die, take time and effort, and relatively costly.
Content of the invention
The purpose of the present invention be exactly in order to overcome defect that above-mentioned prior art is present and to provide a kind of suction adjustable Vacuum pressing and casting mould is inhaled in side, can not only guarantee that metal liquid fills that type is stable, foundry goods homogenous distribution, and facilitate regulation to fill type speed Degree and the cooling velocity of foundry goods.In the different foundry goods of production, need to only change in mold, runner, inner mold and cooling pad One or more, whole set of die need not be opened, improve mould utilization factor, reduce production cost.
The purpose of the present invention can be achieved through the following technical solutions:
Vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction, including pedestal, is connected on pedestal, connects successively from top to bottom Connect, the die assembly that mold that middle part is mutually communicated, middle mould, lower mould are constituted,
The valve being connected with vavuum pump is provided with the outside of described pedestal,
Described mold inner chamber top is the heavy platform of a cylinder, and for temporarily putting metal liquid, middle part is up big and down small Conical structure, bottom are cylindrical structural,
Described middle mould is embedded to be provided with runner and inner mold, and middle mould is provided with channel size phase with the connecting side of mold The depression of coupling and projection, are embedded with inner mold, and can need to change inner mold according to foundry goods in the inner chamber of middle mould, described Lower mould in offer two arc section vacuum passages.
Preferably, the top of inner mold is aligned in the arc in lower mould with the arc section vacuum passage that middle mould is formed Section vacuum passage is arranged, and below runner, symmetrical distribution centered on runner forms side and inhales structure.
Preferably, inner mold is columnar structured, and peripheral uniform two sections of arc convex of bottom, with two in lower mould Arc section vacuum passage matches.So, by rotating inner mold, using arc convex change arc section vacuum passage with The connection area of middle dies cavity, it becomes possible to adjust the closure of vacuum passage, and then adjust the suffered suction of runner inner metal liquid body Power size, finally have adjusted the flowing velocity of metal liquid.
Preferably, the die cavity of inner mold is provided with interchangeable cooling pad, by changing unlike material in inner mold die cavity Cooling pad can adjust the cooling velocity of foundry goods, sequence of crystallization, quantity and crystal shape when affecting molten metal solidification and crystallization, Crystal grain thinning, finally improves casting quality.
Preferably, the depression of the raised and middle mould of runner is using larger gap cooperation, the depression of runner and middle mould Projection coordinated using excessive or less gap.
Preferably, mold, middle mould, lower mould and inner mold by symmetrical two parts through mode connects for screw structure Into.
Preferably, the internal diameter of mold and runner is replaced according to the difference using specification, for example, mold and runner Internal diameter D have 3,5,10,15 4 kind of specification, and need equivalent specifications to support the use.
Compared with prior art, the present invention is in casting mould, when producing different foundry goods, need to only change mold, runner, One or more in inner mold and cooling pad, whole set of die need not be opened, you can up to production effect, time saving and energy saving province's material, Production cost is greatly reduced, while also having following advantages:
(1) what the pyramid type structure of mold increased metal liquid fills type stability;Change the mold of different size The filling velocity of metal liquid is can adjust with the closure of runner, regulation vacuum passage, specifically, can be passed through in rotation Mould adjusts the closure of vacuum passage, changes vacuum, and then adjusts suction size suffered by runner inner metal liquid body, finally Have adjusted the flowing velocity of metal liquid;
(2) side that arc section vacuum passage and runner are formed inhale structure not only facilitated the filling velocity that adjusts metal liquid but also Metal liquid is made to be uniformly distributed in the arc section in inner mold die cavity, specifically, being formed with middle mould by inner mold top Vacuum passage is aligned in the arc section vacuum passage in lower mould and arranges, and below runner, centered on runner, left and right is right Claim distribution, form side and inhale, while coutroi velocity, make that metal liquid is more uniform to be distributed in inner mold die cavity again;
(3) the cooling pad for changing unlike material in inner mold die cavity can adjust the cooling velocity of foundry goods;
(4) mold is detachably can be combined with runner, is easy to clean the metal liquid solidified in runner.
Description of the drawings
Fig. 1 is the structural representation of the present invention;
Structural representations of the Fig. 2 for mold;
Structural representations of the Fig. 3 for runner;
Fig. 4 is the structural representation of middle mould;
Structural representations of the Fig. 5 for inner mold;
Fig. 6 is the structural representation of lower mould.
In figure:11 be mold, 12 be runner, 13 be middle mould, 14 be inner mold, 15 be lower mould, 16 be pedestal, 17 For cool down pad, 21 be mold top, 22 be in the middle part of mold, 23 be mold bottom, 24 be mold left part, 25 for upper Mould right part, 31 for raised, 32 be depression, 33 be endoporus, 41 be depression, 42 for raised, 43 be inner chamber, 51 be inner mold type Chamber, 52 be inner mold bottom, 53 be internal model top, 61 be arc section vacuum passage.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
Vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction, and its structure is as shown in figure 1, part constituent components such as Fig. 2-6 Shown.Casting mould in the present embodiment, including mold 11, runner 12, middle mould 13, inner mold 14, lower mould 15 and base Seat 16, is provided with the valve being connected with vavuum pump on the outside of pedestal 16, lower mould 15 has two arc section vacuum passages 61, arc Degree scope can be 45 °~135 °.Middle mould 13 is included the depression 41 matched with 12 size of runner and raised 42 and can be filled Inner chamber 43 with inner mold 14, is cylindrical structural inside runner 12, and the die cavity 51 of inner mold 14 is provided with cooling pad 17, upper mould It is the heavy platform of a cylinder to have 11 inner chamber tops 21, and for temporarily putting metal liquid, middle part 22 is using up big and down small cone knot Structure, bottom 23 are cylindrical structural.
The projection 31 of runner 12 is coordinated using larger gap with the depression 41 of middle mould 13, convenient dismounting.Runner 12 Depression 32 is coordinated using excessive or less gap with the projection 42 of middle mould 13, it is ensured that the fastness of assembling, is opened in depression 32 It is provided with endoporus 33.
14 top of inner mold is cylindrical shape, the periphery of inner mold bottom 52 uniform the entity of two sections of arc convex, with arc Section vacuum passage 61 matches.Rotation inner mold 14, changes arc section vacuum passage 61 and middle mould using arc convex The connection area of inner chamber, can adjust the closure of vacuum passage, change vacuum, and then adjust runner inner metal liquid body institute By suction size, the flowing velocity of metal liquid is finally have adjusted.
Inner mold 14 is connected by screw on middle mould, adjusts loose screw rotate or take out inner mold 14.Inner mold 14 are connected by screw by left and right two parts and form, and facilitate molding.
The inner chamber on mold top 21 is the heavy platform of a cylinder, and for temporarily putting metal liquid, in the middle part of mold, 22 adopt Up big and down small conical structure, what pyramid type structure increased metal liquid fill type stability, and mold bottom 23 is cylinder Shape structure.
Mold by mold left part 24,25 two parts of mold right part by pin and screw be centrosymmetric connection and Into, and mold detachably can be combined with runner, is easy to clean the metal liquid solidified on inwall.
The arc section vacuum passage formed by inner mold top 53 and middle mould is aligned in the arc section in lower mould Vacuum passage 61 is arranged, and below runner, symmetrical distribution centered on runner forms side and inhales, while coutroi velocity Make that metal liquid is more uniform to be distributed in inner mold die cavity again.
The cooling pad 17 for changing unlike material in inner mold die cavity 51 can adjust the cooling velocity of foundry goods, affect metal Sequence of crystallization, quantity and crystal shape during liquid solidification and crystallization, crystal grain thinning finally improve casting quality.
The internal diameter D of mold and runner has 3,5,10,15 4 kind of specification, and need equivalent specifications to support the use.Select not The mold and runner of same specification and inner mold, can meet the needs of multiple foundry goods, improve mould utilization factor.
Detailed elaboration is carried out to embodiments of the invention above in conjunction with accompanying drawing, its object is to allow and be familiar with technique People understand and present disclosure be carried out, can not be limited the scope of the invention with this, all according to essence of the invention Equivalence changes or modification that refreshing essence is done, should all cover within the scope of the present invention.

Claims (6)

1. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction, it is characterised in that
Including pedestal (16), it is connected on pedestal (16), is sequentially connected from top to bottom, mold (11) that middle part is mutually communicated, The die assembly that middle mould (13), lower mould (15) are constituted,
It is provided with, on the outside of described pedestal (16), the valve being connected with vavuum pump,
Described mold (11) inner chamber top (21) is the heavy platform of a cylinder, and middle part (22) are up big and down small cone knot Structure, bottom (23) are cylindrical structural,
The connection of runner (12) and inner mold (14), middle mould (13) and mold (11) is embedded with described middle mould (13) Side is provided with the depression (41) and raised (42) matched with runner (12) size, is embedded with interior in the inner chamber (43) of middle mould (13) Mould (14),
Two arc section vacuum passages (61) are offered in described lower mould (15);
The arc section vacuum passage that the top of described inner mold (14) is formed with middle mould (13) is aligned in lower mould (15) In arc section vacuum passage arrange, and below runner (12), symmetrical distribution centered on runner (12) forms side Inhale structure;
Described inner mold (14) is rotatable structure, changes arc section vacuum passage (61) and middle mold using arc convex The connection area of tool (13) inner chamber.
2. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction according to claim 1, it is characterised in that described is interior Mould (14) is columnar structured, peripheral uniform two sections of arc convex of bottom, with two arc sections in lower mould (15) Vacuum passage (61) matches.
3. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction according to claim 1, it is characterised in that described is interior The die cavity (51) of mould (14) is provided with interchangeable cooling pad (17).
4. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction according to claim 1, it is characterised in that described stream The projection (31) in road (12) and the depression (41) of middle mould (13) are coordinated using larger gap, the depression (32) of runner (12) with The projection (42) of middle mould (13) is coordinated using excessive or less gap.
5. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction according to any one of claim 1-4, and its feature exists In described mold (11), middle mould (13), lower mould (15) and inner mold (14) are by symmetrical two parts through spiral shell Nail is connected and composed.
6. vacuum pressing and casting mould is inhaled in a kind of adjustable side of suction according to any one of claim 1-4, and its feature exists In the internal diameter of described mold (11) and runner (12) is replaced according to the difference using specification.
CN201510216006.7A 2015-04-29 2015-04-29 Inhale vacuum pressing and casting mould in a kind of adjustable side of suction CN104759605B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510216006.7A CN104759605B (en) 2015-04-29 2015-04-29 Inhale vacuum pressing and casting mould in a kind of adjustable side of suction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510216006.7A CN104759605B (en) 2015-04-29 2015-04-29 Inhale vacuum pressing and casting mould in a kind of adjustable side of suction

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CN104759605A CN104759605A (en) 2015-07-08
CN104759605B true CN104759605B (en) 2017-03-15

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712364A (en) * 1970-11-25 1973-01-23 A Daniel Method of vacuum casting metal
JPS58949B2 (en) * 1979-06-13 1983-01-08 Denki Kogyo Kk
JPS5746950B2 (en) * 1980-07-02 1982-10-06
JPH0366984B2 (en) * 1982-12-15 1991-10-21 Nissan Motor
JPS6289559A (en) * 1985-10-11 1987-04-24 Iwatani & Co Precision casting method for titanium or the like
JPH07116819A (en) * 1993-10-20 1995-05-09 Kiyasuteingu Okamoto:Kk Method for pretreating metal for casting and device therefor
JP4352397B2 (en) * 2004-04-01 2009-10-28 新東工業株式会社 Pouring method for vacuum mold making
CN202763015U (en) * 2012-09-20 2013-03-06 宁波吉威熔模铸造有限公司 Vacuum casting mold
CN204700276U (en) * 2015-04-29 2015-10-14 上海工程技术大学 A kind of suction adjustable side draught vacuum pressing and casting mould

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