CN107866524A - A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing - Google Patents
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing Download PDFInfo
- Publication number
- CN107866524A CN107866524A CN201711296428.5A CN201711296428A CN107866524A CN 107866524 A CN107866524 A CN 107866524A CN 201711296428 A CN201711296428 A CN 201711296428A CN 107866524 A CN107866524 A CN 107866524A
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- Prior art keywords
- mould
- printing
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- preparation
- casting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing of the present invention, comprises the following steps：A. model：It is modeled to obtain the model of casting mould using modeling software, and bleeding point is set at the mouth of a river of model or rising head position；B. printer model：With 3D printer printer model, the casting mould of hollow structure is obtained；C. surface infiltration is handled：In die surface brushing impregnant；D. hunt leak：Check the air-tightness of mould, it is desirable to which the outer wall of mould is sealed without gas leakage.The preparation method of the present invention, technique is simple, low manufacture cost, handling good, can give full play to the advantage of 3D printing, and the casting molds made using the preparation method, have the advantages that easy mold release, mould surface quality is good, precision is high.
Description
Technical field
The invention belongs to technical field of mold, is related to a kind of preparation method of casting molds, and more particularly to one kind is based on
The preparation method of the casting molds of 3D printing.
Background technology
Casting mould refers to that, in order to obtain the planform of part, the material being easily molded with other in advance makes part
Planform, mould is then put into sand mold again, a sky as design of part size is then formed in sand mold
Chamber, then mobility liquid is poured into a mould in the cavity, it can just be formed and mold shape structure complete one after liquid cooling solidification
The part of sample.The casting mould of prior art is completed frequently with metal pattern or wooden mold, metal pattern or wooden mold in overmolded
Afterwards, it is not easy to depart from from sand mold, the surface quality of sand mold can be influenceed if forced demoulding.
3D printing technique is one kind of rapid shaping technique, is resolved into if principle is the threedimensional model for Computer Design
Dry planar slice, then 3D printing material is successively superimposed by section figure, final stack is into complete object, at present 3D printing
Technology is widely used in every field.
The content of the invention
It is an object of the invention to provide a kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, the casting
Make and formed with mould based on 3D printing technique production and processing, preparation method is simple, and the mould prepared using this method is easily de-
Mould, effectively solve the problems, such as that prior art is present.
The technical scheme that uses to achieve the above object of the present invention is：A kind of casting for being easy to the demoulding based on 3D printing is used
The preparation method of mould, comprises the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files；
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, number of slices is printed with 3D printer
According to obtaining the casting mould of hollow structure, and the bleeding point of the mould connects with the cavity of mould；
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B；
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould, it is desirable to
The outer wall of mould is sealed without gas leakage, and can bear the vacuum of -0.5 ~ -1 times of atmospheric pressure.
The present invention further technical scheme be：In stepb, the material that 3D printing uses be polyurethane or polyethylene or
Polypropylene or silica gel, material hardness are the Shao Er D of 10 Shao Er A ~ 90.
The present invention further technical scheme be：In the step B, the wall thickness of the mould of 3D printing is 0.5 ~ 10mm, and
There is the reticular supporting structure of rhombus in the cavity of the mould, interstitital texture density is 5% ~ 50%.
The present invention further technical scheme be：In the step C, after die surface brushing impregnant, by bleeding point
Vacuumize process is carried out to mould, impregnant is penetrated under atmospheric pressure in the micropore of die surface；The impregnant
It is polyurethane or acrylate.
The present invention makes core mold using flexible material by 3D printing, and is done in the side wall of core mold at sealing
Reason so that mould inside forms the cavity of sealing, after sand mold completes, to mould take out very by the bleeding point of mould
Sky, mould can produce minimal shrink, and volume diminishes slightly, it is possible to easily be taken off from the upper mould and lower mould of casting sand type
From completion stripping process；Further, since the casting mould of the present invention is filled with the branch that density is 5% ~ 50% when 3D printing models
Support structure, therefore core mold will not produce deformation when making sand mold so that the precision of sand mold is guaranteed.A kind of base of the present invention
In the preparation method of the casting molds for being easy to the demoulding of 3D printing, technique is simple, low manufacture cost, handling good, Neng Gouchong
The advantage of 3D printing, and the casting molds made using the preparation method are waved in distribution, have easy mold release, mould surface quality
Well, the advantages that precision is high.
Preparation method of the present invention based on the casting molds of 3D printing and the mould is made into one with reference to embodiment
The explanation of step.
Embodiment
Embodiment one：
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, comprises the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files.
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, model wall thickness is set to 0.5 ~
10mm, and in the cavity of model fill rhombus reticular supporting structure, interstitital texture density be 5% ~ 50%, then beaten with 3D
Print machine prints slice of data, obtains the casting mould of hollow structure, and the bleeding point of the mould connects with the cavity of mould；Separately
Outside, the material that uses of present invention printing is polyurethane or the flexible material such as polyethylene or polypropylene or silica gel, material hardness 10
The Shao Er D of Shao Er A ~ 90.
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B, impregnant used in the present invention can
To be polyurethane or acrylate, after die surface brushing impregnant, vacuumize process is carried out to mould by bleeding point, makes leaching
Penetration enhancer penetrates into the micropore of die surface under atmospheric pressure, ensures the air-tightness of mould.
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould,
It is required that the outer wall of mould is sealed without gas leakage, and the vacuum of -0.5 ~ -1 times of atmospheric pressure can be born.
Embodiment two：
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, comprises the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files.
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, model wall thickness is set to
0.5mm, and in the cavity of model fill rhombus reticular supporting structure, interstitital texture density be 5%, then use 3D printing
Machine prints slice of data, obtains the casting mould of hollow structure, and the bleeding point of the mould connects with the cavity of mould；Separately
Outside, the material that uses of present invention printing is polyurethane or the flexible material such as polyethylene or polypropylene or silica gel, material hardness 10
Shao Er A.
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B, impregnant used in the present invention can
To be polyurethane or acrylate, after die surface brushing impregnant, vacuumize process is carried out to mould by bleeding point, makes leaching
Penetration enhancer penetrates into the micropore of die surface under atmospheric pressure, ensures the air-tightness of mould.
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould,
It is required that the outer wall of mould is sealed without gas leakage, and the vacuum of -0.5 times of atmospheric pressure can be born.
Embodiment three：
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, comprises the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files.
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, model wall thickness is set to
10mm, and in the cavity of model fill rhombus reticular supporting structure, interstitital texture density be 50%, then use 3D printing
Machine prints slice of data, obtains the casting mould of hollow structure, and the bleeding point of the mould connects with the cavity of mould；Separately
Outside, the material that uses of present invention printing is polyurethane or the flexible material such as polyethylene or polypropylene or silica gel, material hardness 90
Shao Er D.
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B, impregnant used in the present invention can
To be polyurethane or acrylate, after die surface brushing impregnant, vacuumize process is carried out to mould by bleeding point, makes leaching
Penetration enhancer penetrates into the micropore of die surface under atmospheric pressure, ensures the air-tightness of mould.
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould,
It is required that the outer wall of mould is sealed without gas leakage, and the vacuum of -1 times of atmospheric pressure can be born.
Example IV：
A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, comprises the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files.
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, model wall thickness is set to 5mm,
And the reticular supporting structure of rhombus is filled in the cavity of model, interstitital texture density is 25%, is then printed with 3D printer
Slice of data, the casting mould of hollow structure is obtained, and the bleeding point of the mould connects with the cavity of mould；In addition, this hair
The bright material used that prints is polyurethane or the flexible material such as polyethylene or polypropylene or silica gel, and material hardness is 30 Shao Er A.
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B, impregnant used in the present invention can
To be polyurethane or acrylate, after die surface brushing impregnant, vacuumize process is carried out to mould by bleeding point, makes leaching
Penetration enhancer penetrates into the micropore of die surface under atmospheric pressure, ensures the air-tightness of mould.
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould,
It is required that the outer wall of mould is sealed without gas leakage, and the vacuum of -0.8 times of atmospheric pressure can be born.
The present invention is a kind of to be easy to the casting molds of the demoulding that mould is positioned at into sand after the completion of preparation based on 3D printing
In the molding sand of case, rear compacting molding sand, casting sand type is formed after molding sand hardening；Now by the bleeding point of casting mould to mould
Vacuumized, because the casting mould of the present invention is formed using flexible material 3D printing, its hardness is relatively low, and its surface is also
Encapsulation process has been done, therefore mould can produce minimal shrink when vacuumizing, volume diminishes slightly, it is possible to easily from casting
Depart from the upper mould and lower mould of sand mold, complete stripping process.Further, since the casting mould of the present invention is filled out when 3D printing models
The supporting construction that density is 5% ~ 50% is filled, therefore core mold will not produce deformation when making sand mold so that the precision of sand mold
It is guaranteed.
Above example is only presently preferred embodiments of the present invention, and structure of the invention is not limited to what above-described embodiment was enumerated
Form, any modification made within the spirit and principles of the invention, equivalent substitution etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (5)
1. a kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing, it is characterised in that comprise the following steps：
A. model：It is modeled to obtain the model of casting mould using modeling software, and is set at the mouth of a river of model or rising head position
Put bleeding point, after model exported as into STL formatted files；
B. printer model：Slicing treatment will be carried out in STL formatted file import slices softwares, number of slices is printed with 3D printer
According to obtaining the casting mould of hollow structure, and the bleeding point of the mould connects with the cavity of mould；
C. surface infiltration is handled：In the die surface brushing impregnant obtained by step B；
D. hunt leak：Will leak detection liquid as in the mould cavity obtained by bleeding point implantation step C, and check the air-tightness of mould, it is desirable to
The outer wall of mould is sealed without gas leakage, and can bear the vacuum of -0.5 ~ -1 times of atmospheric pressure.
2. the preparation method of the casting molds according to claim 1 based on 3D printing, it is characterised in that in step B
In, material that 3D printing uses is polyurethane or polyethylene or polypropylene or silica gel, and material hardness is the Shao Er D of 10 Shao Er A ~ 90.
3. the preparation method of the casting molds according to claim 2 based on 3D printing, it is characterised in that the step
In B, the wall thickness of the mould of 3D printing is 0.5 ~ 10mm, and has the reticular supporting structure of rhombus in the cavity of the mould, filling
Density of texture is 5% ~ 50%.
4. the preparation method of the casting molds according to claim 1 based on 3D printing, it is characterised in that the step
In C, after die surface brushing impregnant, vacuumize process is carried out to mould by bleeding point, makes impregnant in the work of atmospheric pressure
In micropore with lower infiltration die surface.
5. the preparation method of the casting molds according to claim 4 based on 3D printing, it is characterised in that the infiltration
Agent is polyurethane or acrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296428.5A CN107866524A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296428.5A CN107866524A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing |
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| Publication Number | Publication Date |
|---|---|
| CN107866524A true CN107866524A (en) | 2018-04-03 |
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ID=61755222
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711296428.5A Pending CN107866524A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of the casting molds for being easy to the demoulding based on 3D printing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216814A (en) * | 2019-06-10 | 2019-09-10 | 北玻院(滕州)复合材料有限公司 | A kind of mold and its forming method based on 3D printing technique |
| CN110625071A (en) * | 2018-06-21 | 2019-12-31 | 北京瑞泓翔宏大科技发展有限公司 | Sand core for sand casting and preparation method thereof |
| CN111761031A (en) * | 2020-06-22 | 2020-10-13 | 共享智能铸造产业创新中心有限公司 | 3D printing method for sand core and 3D printer for casting sand core |
| CN114406188A (en) * | 2020-10-28 | 2022-04-29 | 北京鉴衡认证中心有限公司 | Manufacturing method of casting mold and casting mold |
| WO2022107691A1 (en) * | 2020-11-20 | 2022-05-27 | 株式会社ノリタケカンパニーリミテド | Laminate molded ceramic core and manufacturing method of said ceramic core |
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| CN105014777A (en) * | 2015-07-31 | 2015-11-04 | 广东皓明陶瓷科技有限公司 | Female die for ceramic cup product and using method thereof |
| CN105666750A (en) * | 2016-03-17 | 2016-06-15 | 路文虎 | Preparation process and casting mould for cast product based on 3D printing technology |
| CN106273444A (en) * | 2015-06-02 | 2017-01-04 | 北京大业三维科技有限公司 | The demoulding control method of a kind of 3D print system and device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625071A (en) * | 2018-06-21 | 2019-12-31 | 北京瑞泓翔宏大科技发展有限公司 | Sand core for sand casting and preparation method thereof |
| CN110216814A (en) * | 2019-06-10 | 2019-09-10 | 北玻院(滕州)复合材料有限公司 | A kind of mold and its forming method based on 3D printing technique |
| CN110216814B (en) * | 2019-06-10 | 2021-06-22 | 北玻院(滕州)复合材料有限公司 | Mold based on 3D printing technology and forming method thereof |
| CN111761031A (en) * | 2020-06-22 | 2020-10-13 | 共享智能铸造产业创新中心有限公司 | 3D printing method for sand core and 3D printer for casting sand core |
| CN111761031B (en) * | 2020-06-22 | 2022-05-24 | 共享智能装备有限公司 | Sand core 3D printing method and casting sand core 3D printer |
| CN114406188A (en) * | 2020-10-28 | 2022-04-29 | 北京鉴衡认证中心有限公司 | Manufacturing method of casting mold and casting mold |
| WO2022107691A1 (en) * | 2020-11-20 | 2022-05-27 | 株式会社ノリタケカンパニーリミテド | Laminate molded ceramic core and manufacturing method of said ceramic core |
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Application publication date: 20180403 |