CN109848370A - A kind of sand casting casting external form moulding tooling - Google Patents
A kind of sand casting casting external form moulding tooling Download PDFInfo
- Publication number
- CN109848370A CN109848370A CN201910267911.3A CN201910267911A CN109848370A CN 109848370 A CN109848370 A CN 109848370A CN 201910267911 A CN201910267911 A CN 201910267911A CN 109848370 A CN109848370 A CN 109848370A
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- China
- Prior art keywords
- casting
- outer mould
- sprue
- external form
- mould
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- 238000005266 casting Methods 0.000 title claims abstract description 151
- 238000000465 moulding Methods 0.000 title claims abstract description 42
- 238000007528 sand casting Methods 0.000 title claims abstract description 38
- 230000013011 mating Effects 0.000 claims abstract description 24
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 239000003110 molding sand Substances 0.000 abstract description 5
- -1 ferrous metals Chemical class 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 244000035744 Hura crepitans Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Abstract
The present invention relates to non-ferrous metals casting manufacture fields, and in particular to a kind of sand casting casting external form moulding tooling.Sand casting casting external form moulding tooling includes casting outer mould, connor gate outer mould and sprue outer mould, connor gate outer mould and sprue outer mould vertically extend, connor gate exterior mold has the cast gate forming surface for molding gate, cast gate forming surface has and casting external form mould surface overlapped casting mating part, also there is the sprue mating part with sprue outer mould surface engagement, casting mating part and sprue mating part are arc-shaped, make cast gate forming surface and casting external form mould surface respectively, the rounded transition of lap-joint of sprue external form mould surface.Burning into sand is not added when taking out in sand casting casting external form moulding tooling of the invention substantially, and position corresponding with casting mating part and sprue mating part is fillet on external form sand core, eliminates the process that fillet is manually repaired on outer molding sand core.
Description
Technical field
The present invention relates to non-ferrous metals casting manufacture fields.More particularly to a kind of sand casting casting external form moulding tooling.
Background technique
In the prior art, in order to guarantee that sand casting cavity of external molding sand in-core in casting is steadily filled, prevents
Type initial stage generation " whirlpool " is only filled, Slot Gating System is generallyd use.Slot Gating System is usually by casting outer mould, seam
Gap cast gate outer mould and sprue outer mould three parts composition.Connor gate outer mould is located at casting outer mould and sprue external form
Between mould, connor gate outer mould cooperates with casting outer mould, sprue outer mould overlap joint respectively.Be well placed casting outer mould,
Sand is buried after connor gate outer mould and sprue outer mould, takes out casting outer mould, connor gate outer mould after sand mold hardening
With sprue outer mould.Aluminium alloy solution is poured from the sprue of outer mould sand core, aluminium alloy solution flows into outer through connor gate
The cavity left after casting outer mould is taken out in molding sand core, takes out casting after aluminium alloy solution solidification.
Slot Gating System commonly used in the prior art takes out casting outer mould, connor gate outer mould from sand mold
During sprue outer mould, connor gate exterior mold has the cast gate forming surface for molding gate, cast gate forming surface
With lap-joint's usually burning into sand of the lap-joint of casting external form mould surface, sprue external form mould surface, lead to the structure of external form sand core
It is destroyed.In addition, requiring to meet casting, clearance type casting is being taken out in position corresponding with above-mentioned lap-joint on external form sand core
It needs manually to accomplish fillet after system.Artificial repairing type can inevitably cause error, cause to pour road shape everywhere and intensity is not united
One and destroy external form sand core structure, easily have an adverse effect to casting.
Summary of the invention
The purpose of the present invention is to provide a kind of sand casting casting external form moulding toolings, are poured with the clearance type for solving current
Injection system is easy burning into sand and needs the ropy problem of casting external form sand core caused by artificial rounded corner.
To achieve the above object, sand casting casting external form moulding tooling of the invention includes that casting outer mould, gap are poured
Mouth outer mould and sprue outer mould, connor gate outer mould and sprue outer mould vertically extend, connor gate
Exterior mold has a cast gate forming surface for molding gate, and cast gate forming surface has that overlapped that casting is matched with casting external form mould surface
Part is closed, also there is the sprue mating part with sprue outer mould surface engagement, casting mating part and sprue cooperation
Part is arc-shaped, makes cast gate forming surface and the lap-joint of casting external form mould surface, sprue external form mould surface rounded respectively
Transition.
Sand casting casting external form moulding tooling of the invention the utility model has the advantages that because of cast gate forming surface and casting outer mould table
The rounded transition of lap-joint in face, sprue external form mould surface, so sand casting casting external form moulding tooling is basic when taking out
Burning into sand is not added, and after the taking-up of sand casting casting external form moulding tooling, matches on external form sand core with casting mating part and sprue
Closing the corresponding position in part is fillet, eliminates the process for manually repairing fillet on outer molding sand core, solves because manually repairing
Type and the problem of the structure for respectively pouring road shape and intensity disunity and destructible external form sand core of the external form sand core that generates.
Further, in order to prevent in modeling process because generating opposite position between casting outer mould and connor gate outer mould
It moves and the position of sand core structure intensity difference, connor gate is caused to shift.The casting outer mould is equipped with casting outer mould
Seam allowance, connor gate outer mould have the casting outer mould inserting paragraph in insertion casting outer mould seam allowance.
Further, the sprue outer mould is wholely set with connor gate outer mould.
Further, opposite because being generated between sprue outer mould and connor gate outer mould in modeling process in order to prevent
It is displaced and the position between sand core structure intensity difference, connor gate and sprue outer mould is caused to shift.The sprue
Outer mould is equipped with sprue outer mould seam allowance, and connor gate outer mould has the sprue in insertion sprue outer mould seam allowance
Outer mould inserting paragraph.
Further, the sprue outer mould is equipped with sprue outer mould seam allowance, and connor gate outer mould, which has, to be inserted
Enter the sprue outer mould inserting paragraph in sprue outer mould seam allowance, the casting outer mould is integrally set with connor gate outer mould
It sets.
Further, the connor gate outer mould includes the casting portion and running channel portion of split settings, casting portion and casting
Outer mould is wholely set, and running channel portion is wholely set with sprue outer mould.
Further, the face being connected to each other on the sprue outer mould or casting outer mould with connor gate outer mould is
Plane.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the specific embodiment 1 of sand casting casting external form moulding tooling of the invention；
Fig. 2 is the top view of the sprue outer mould of sand casting casting external form moulding tooling of the invention；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the top view of the connor gate outer mould of sand casting casting external form moulding tooling of the invention；
Fig. 5 is the main view of Fig. 4；
Fig. 6 is the partial structure diagram of the specific embodiment 3 of sand casting casting external form moulding tooling of the invention；
Fig. 7 is the partial structure diagram of the specific embodiment 4 of sand casting casting external form moulding tooling of the invention；
Fig. 8 is the partial structure diagram of the specific embodiment 5 of sand casting casting external form moulding tooling of the invention；
In figure: 1, casting outer mould, 2, connor gate outer mould, 3, sprue outer mould, 21, casting mating part, 22, directly pour
Road mating part, 23, casting outer mould inserting paragraph, 24, sprue outer mould inserting paragraph, 25, casting portion, 26, running channel portion, 4, casting
Part outer mould seam allowance, 5, sprue outer mould seam allowance.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment 1 of sand casting casting external form moulding tooling of the invention, as shown in Figures 1 to 5, sand casting
Casting external form moulding tooling, including including casting outer mould 1, connor gate outer mould 2 and sprue outer mould 3, connor gate
Outer mould 2 has a cast gate forming surface for molding gate, and cast gate forming surface has and overlapped the surface of casting outer mould 1 casting
Part mating part 21, casting mating part 21 is arc-shaped, and cast gate forming surface also has and the surface engagement of sprue outer mould 3
Sprue mating part 22, sprue auxiliary section 22 is arc-shaped, and casting mating part 21 makes cast gate forming surface and casting outer mould 1
Surface the rounded transition of lap-joint, sprue mating part 22 makes the surface of cast gate forming surface and sprue outer mould 3
The rounded transition of lap-joint.Cast gate forming surface and the lap-joint on the surface of casting outer mould 1, the surface of sprue outer mould 3 are in
Round-corner transition, so burning into sand is not added when taking out in sand casting casting external form moulding tooling substantially, and sand casting casting external form is made
After type tooling is taken out, external form sand core part corresponding with casting mating part 21 and sprue mating part 22 is fillet, is saved
The process for manually repairing fillet on outer molding sand core has been gone, has solved each running channel shape of the external form sand core generated by artificial repairing type
The problem of structure of shape and intensity disunity and destructible external form sand core.
Connor gate outer mould 2 is equipped with sprue outer mould inserting paragraph 24 and casting outer mould inserting paragraph 23.Sprue
Outer mould 3 is equipped with the sprue outer mould seam allowance 5 for being inserted into sprue outer mould inserting paragraph 24, and casting outer mould 1 is equipped with
The casting outer mould seam allowance 4 for being inserted into casting outer mould inserting paragraph 23.
In the different casting of casting a batch, if the vertical height h2 of a sprue outer mould 3 is higher than this batch of casting
Casting outer mould 1 vertical height, and the diameter D of the sprue outer mould 3 meets the casting requirement of this collection of casting, that
The sprue outer mould 3 can be common to the casting process of this collection of casting.In the different casting of casting a batch, if one
The vertical height h1 of a connor gate outer mould 2 is higher than the vertical height of the casting outer mould 1 of this batch of casting, and the gap is poured
The width d1 of mouth outer mould 2 meets the casting requirement of this collection of casting, then the connor gate outer mould 2 can be common to this
Criticize the casting process of casting.
The course of work of the sand casting casting external form moulding tooling of the present embodiment: choosing is required according to the corresponding casting of casting
The sprue outer mould 3 for taking corresponding diameter D and vertical height h2, according to the corresponding casting requirement selection width d1 of casting and vertically
The connor gate outer mould 2 that height h1 meets the requirements and is adapted to sprue outer mould 3.Processed on casting outer mould 1 with
The casting outer mould seam allowance 4 that casting outer mould inserting paragraph 23 is adapted to.Casting outer mould 1 is successively well placed in sandbox, gap is poured
Sand is buried after mouth outer mould 2 and sprue outer mould 3, casting outer mould 1, connor gate outer mould are successively taken out after sand solidified
2, sprue outer mould 3.The burr polished on external form sand core.Aluminium alloy solution, aluminium are poured from the sprue of external form sand core
The cavity that alloy solution leaves after connor gate flows into outer mould sand core and takes out casting outer mould.It is solidified to aluminium alloy solution
After take out casting, to casting carry out repairing type, casting complete.
The embodiment 2 of sand casting casting external form moulding tooling, the present embodiment and sand casting casting external form moulding tooling
The difference of embodiment 1 be only that, make to be respectively provided with casting outer mould plane and straight on casting outer mould and sprue outer mould
Running channel outer mould plane, have on connor gate outer mould with the casting outer mould faying surface of casting outer mould plane adaptation and with
The sprue outer mould faying surface of sprue outer mould plane adaptation, between connor gate outer mould and casting outer mould, gap
It is overlap joint cooperation between cast gate outer mould and sprue outer mould.
It is convenient for the processing of sprue outer mould and casting outer mould by the way of overlap joint cooperation, but is cast compared to sand mold
The embodiment 1 of casting external form moulding tooling is made, the present embodiment can make the casting of connor gate outer mould by the way of overlap joint cooperation
The wedge angle of structure very little at an angle, sprue outer mould mating surface between part outer mould mating surface and casting outer mould faying surface
With sprue outer mould faying surface also can structure very little at an angle wedge angle, connor gate outer mould when in use, above-mentioned point
Angle easily snaps off and wears, and shortens the service life of connor gate outer mould.And during back-up sand, connor gate external form
It is easy to produce relative displacement between mould and casting outer mould, connor gate outer mould and sprue outer mould, influences the matter of casting
Amount.
The embodiment 3 of sand casting casting external form moulding tooling, as shown in fig. 6, outside the present embodiment and sand casting casting
The difference of the embodiment 1 of type moulding tooling is only that, in the present embodiment, connor gate outer mould 2 and sprue outer mould 3 are one
Body setting.
The embodiment 4 of sand casting casting external form moulding tooling, as shown in fig. 7, outside the present embodiment and sand casting casting
The difference of the embodiment 1 of type moulding tooling is only that, in the present embodiment, connor gate outer mould 2 is integrated with casting outer mould 1
Setting.
The embodiment 5 of sand casting casting external form moulding tooling, as shown in figure 8, outside the present embodiment and sand casting casting
The difference of the embodiment 1 of type moulding tooling is only that connor gate outer mould includes the casting portion 25 and running channel portion of split settings
26, casting portion 25 is wholely set with casting outer mould 1, and running channel portion 26 is wholely set with sprue outer mould 3.
Claims (7)
1. sand casting casting external form moulding tooling, including casting outer mould, connor gate outer mould and sprue outer mould, seam
Gap cast gate outer mould and sprue outer mould vertically extend, and connor gate exterior mold has pouring for molding gate
Mouthful forming surface, cast gate forming surface have with casting external form mould surface overlapped casting mating part, also have and sprue external form
The sprue mating part of mould surface cooperation, which is characterized in that casting mating part and sprue mating part are arc-shaped, point
Do not make the rounded transition of lap-joint of cast gate forming surface Yu casting external form mould surface, sprue external form mould surface.
2. sand casting casting external form moulding tooling according to claim 1, which is characterized in that on the casting outer mould
Equipped with casting outer mould seam allowance, connor gate outer mould has the casting outer mould inserting paragraph in insertion casting outer mould seam allowance.
3. sand casting casting external form moulding tooling according to claim 2, which is characterized in that the sprue outer mould
It is wholely set with connor gate outer mould.
4. sand casting casting external form moulding tooling according to claim 2, which is characterized in that the sprue outer mould
It is equipped with sprue outer mould seam allowance, connor gate outer mould has the sprue outer mould in insertion sprue outer mould seam allowance
Inserting paragraph.
5. sand casting casting external form moulding tooling according to claim 1, which is characterized in that the sprue outer mould
It is equipped with sprue outer mould seam allowance, connor gate outer mould has the sprue outer mould in insertion sprue outer mould seam allowance
Inserting paragraph, the casting outer mould are wholely set with connor gate outer mould.
6. sand casting casting external form moulding tooling according to claim 1, which is characterized in that the connor gate external form
Mould includes the casting portion and running channel portion of split settings, and casting portion is wholely set with casting outer mould, running channel portion and sprue external form
Mould is wholely set.
7. sand casting casting external form moulding tooling according to claim 1, which is characterized in that the sprue outer mould
Or the face being connected to each other on casting outer mould with connor gate outer mould is plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267911.3A CN109848370A (en) | 2019-04-03 | 2019-04-03 | A kind of sand casting casting external form moulding tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267911.3A CN109848370A (en) | 2019-04-03 | 2019-04-03 | A kind of sand casting casting external form moulding tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109848370A true CN109848370A (en) | 2019-06-07 |
Family
ID=66903087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910267911.3A Pending CN109848370A (en) | 2019-04-03 | 2019-04-03 | A kind of sand casting casting external form moulding tooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN109848370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618245A (en) * | 2020-05-18 | 2020-09-04 | 中国第一汽车股份有限公司 | Cylinder cover casting process with sand box limited in size condition |
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