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3D-printing-based preparation method for casting mould convenient to demold

A technology of 3D printing and casting molds, which is applied in the direction of casting molding equipment, additive processing, etc., can solve the problems affecting the surface quality of sand molds, and achieve the effect of good surface quality of sand molds, simple process and guaranteed accuracy

Inactive Publication Date: 2018-04-03
柳州智云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The casting molds in the prior art often use metal models or wooden models. After the metal model or wooden model is turned over, it is not easy to separate from the sand mold. If the mold is forcibly removed, the surface quality of the sand mold will be affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a casting mold based on 3D printing to facilitate demoulding, comprising the following steps:

[0017] A. Modeling: Use modeling software to model to obtain the model of the casting mold, and set the suction port at the position of the nozzle or riser of the model, and then export the model as an STL format file.

[0018] B. Print the model: Import the STL format file into the slicing software for slicing processing, set the wall thickness of the model to 0.5~10mm, and fill the cavity of the model with a rhombus mesh support structure, and the density of the filling structure is 5%~50 %, then print the slice data with a 3D printer to obtain a casting mold with a hollow structure, and the air inlet of the mold is communicated with the cavity of the mold; in addition, the materials used for printing in the present invention are flexible materials such as polyurethane or polyethylene or polypropylene or silica gel. Material, the material hardness is ...

Embodiment 2

[0022] A method for preparing a casting mold based on 3D printing to facilitate demoulding, comprising the following steps:

[0023] A. Modeling: Use modeling software to model to obtain the model of the casting mold, and set the suction port at the position of the nozzle or riser of the model, and then export the model as an STL format file.

[0024] B. Print the model: Import the STL format file into the slicing software for slicing processing, set the model wall thickness to 0.5mm, and fill the cavity of the model with a rhombus-shaped mesh support structure, the filling structure density is 5%, and then use The 3D printer prints slice data to obtain a casting mold with a hollow structure, and the air inlet of the mold communicates with the cavity of the mold; in addition, the materials used for printing in the present invention are flexible materials such as polyurethane or polyethylene or polypropylene or silica gel, and the hardness of the material is For 10 Shore A.

...

Embodiment 3

[0028] A method for preparing a casting mold based on 3D printing to facilitate demoulding, comprising the following steps:

[0029] A. Modeling: Use modeling software to model to obtain the model of the casting mold, and set the suction port at the position of the nozzle or riser of the model, and then export the model as an STL format file.

[0030] B. Print the model: Import the STL format file into the slicing software for slicing processing, set the model wall thickness to 10mm, and fill the cavity of the model with a rhombus mesh support structure, the filling structure density is 50%, and then use 3D The printer prints the slicing data to obtain a casting mold with a hollow structure, and the air inlet of the mold communicates with the cavity of the mold; in addition, the materials used for printing in the present invention are flexible materials such as polyurethane or polyethylene or polypropylene or silica gel, and the hardness of the material is 90 Shore D.

[0031...

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Abstract

The invention provides a 3D-printing-based preparation method for a casting mould convenient to demold. The preparation method comprises the following steps of A, modeling, specifically, modeling software is utilized for modeling, a model of the casting mould is obtained, and an extraction opening is formed at a water gap or a dead head of the model; B, printing of the model, specifically, the model is printed with a 3D printer, and the casting mould of a hollow structure is obtained; C, surface infiltration treatment, specifically, the surface of the mould is coated with an impregnant; D, leakage detection, specifically, the airtightness of the mould is checked, and the outer wall of the mould is required to be sealed and free of air leakage. The preparation method is simple in structure,low in fabrication cost and good in controllability, 3D printing advantages can be fully achieved, and the casting mould fabricated through the preparation method has the advantages of being prone todemoulding, good in sand mould surface quality, high in precision and the like.

Description

technical field [0001] The invention belongs to the technical field of moulds, and relates to a method for preparing a casting mold, in particular to a method for preparing a casting mold based on 3D printing. Background technique [0002] Casting mold means that in order to obtain the structural shape of the part, other easy-to-form materials are used to make the structural shape of the part in advance, and then the mold is placed in the sand mold, so a cavity with the same structural size as the part is formed in the sand mold. Then, a fluid liquid is poured into the cavity, and after the liquid cools and solidifies, a part with exactly the same shape and structure as the mold can be formed. The casting molds of the prior art often adopt metal models or wooden models. After the metal model or wooden model is turned over, it is difficult to separate from the sand mold. If the mold is forcibly demoulded, the surface quality of the sand mold will be affected. [0003] 3D pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02B33Y10/00B33Y80/00
CPCB22C7/02B33Y10/00B33Y80/00
Inventor 路文虎徐剑
Owner 柳州智云科技有限公司
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