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Forming device and method for additive manufacturing of inorganic cementing material products

A technology of inorganic cementitious materials and additive manufacturing, which is applied in the direction of manufacturing tools, additive processing, ceramic molding machines, etc., and can solve problems that affect product surface quality and dimensional accuracy, fuzzy boundaries, complex shapes or structures, etc.

Pending Publication Date: 2020-04-17
陈勃生 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Constrained by the existing mold making and demoulding technology, the shape of inorganic cementitious material products cannot be designed to be very complicated, which greatly limits its application range, and it is difficult to manufacture fine products of inorganic materials with smooth surface and good dimensional accuracy
[0006] Existing related additive manufacturing technologies can produce products with relatively complex shapes or structures and relatively high dimensional accuracy requirements
However, for the powder bed printing of inorganic gelling materials, because the coagulant penetrates into the loose and porous inorganic gelling material, the boundary between the formed product and the surrounding inorganic powder materials is blurred during the forming process, which seriously affects the surface of the product. Quality and Dimensional Accuracy

Method used

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  • Forming device and method for additive manufacturing of inorganic cementing material products
  • Forming device and method for additive manufacturing of inorganic cementing material products
  • Forming device and method for additive manufacturing of inorganic cementing material products

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Effect test

Embodiment 1

[0042] figure 1 A schematic diagram of the forming device of the present invention in an embodiment is given: the forming device includes an ultrasonic vibrating powder spreading device 1, a nozzle or a nozzle array 3, a forming cylinder 4 and a lift table 5, and the ultrasonic vibrating powder spreading device 1 is used to gel the inorganic The material 6 spreads evenly on the upper surface of the lifting table 5 and vibrates into a plane. The spraying device 3 includes at least two groups of nozzles or two groups of nozzle arrays, wherein one group of nozzles or the array of nozzles 3 is used to spray the corresponding level of the product on the material layer. The outer edge of the cross-sectional solid area is sprayed with anti-seepage agent. Another group of nozzles or nozzle array 3 is used to spray coagulant to the horizontal cross-sectional solid area corresponding to the product on the material layer. The lifting table 5 is placed in the forming cylinder 4, along the ...

Embodiment 2

[0044] The present invention provides a forming method of a forming device for additive manufacturing of inorganic gelling material products according to an embodiment, through which the forming of refined products of geopolymer materials can be realized.

[0045] see figure 2 , the forming method comprises the following steps:

[0046] 1. Discrete the three-dimensional design graphics of the product to be processed into a series of two-dimensional horizontal cross-sectional graphics, and input them into the forming device control computer;

[0047] 2. Load raw materials such as powdery geopolymer materials, anti-seepage agent (shellac varnish) and coagulant (NaOH solution) into the forming device;

[0048] 3. The ultrasonic vibrating powder spreading mechanism in the forming device spreads and vibrates the powdery raw materials into a uniform thin layer with a thickness of about 0.1mm;

[0049] 4. The anti-seepage agent nozzle group in the forming device sprays the anti-pe...

Embodiment 3

[0057] The present invention also provides another embodiment of the forming method of the forming device used for the additive manufacturing of inorganic cementitious material products, through which the forming of fine ceramic products is realized.

[0058] see image 3 , the method includes the following steps:

[0059] 1. Discrete the three-dimensional design graphics of the product to be processed into a series of two-dimensional horizontal cross-sectional graphics, and input them into the forming device control computer;

[0060] 2. Load the uniform mixture of high alumina cement and aluminum oxide, anti-seepage agent (shellac varnish) and water-based coagulant into the forming device;

[0061] 3. The ultrasonic vibrating powder spreading mechanism in the forming device spreads and vibrates the powdery raw materials into a uniform thin layer with a thickness of about 0.1mm;

[0062] 4. The anti-seepage agent nozzle group in the forming device sprays the anti-permeation...

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Abstract

The invention discloses forming device and method for additive manufacturing of inorganic cementing material products. The device is provided with no less than two groups of spray heads or spray headarrays which are used for spraying coagulants and permeability-preventing agents into the planes of inorganic cementing materials correspondingly; and combined with the corresponding method, the device is used for manufacturing inorganic cementing material products and special ceramic products which are complex in structural shape and high in dimensional precision and surface quality requirements.The coagulants react with the inorganic cementing materials and are solidified into a whole; a permeability-preventing layer is formed between the permeability-preventing agents and the inorganic cementing materials, and isolation belts for blocking the penetration of the coagulants are formed between the products and powder materials around the products, so that the products have better surfacequality and higher dimensional precision, and the powder materials which are used for forming of the products are not polluted.

Description

technical field [0001] The invention relates to the technical field of forming inorganic gelling material products, in particular to a forming device and method for additive manufacturing of inorganic gelling material products. Background technique [0002] Inorganic gelling material products are widely used in various fields of social production and life. Traditional cement (powdered hydraulic inorganic cementitious material) and emerging geopolymer products are typical representatives. [0003] Common forming methods of inorganic gelling material products mainly include: premix casting method, direct injection method, jet vacuum dehydration method, premix pressurization method, premix extrusion method, layer laying method, etc. Among them: the pre-mixed casting method is mainly suitable for the manufacture of small special-shaped products with thick walls; the direct injection method is mainly suitable for the manufacture of products with simple shapes and large areas suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/00B33Y30/00B33Y50/02B33Y70/00C04B35/10
CPCB28B1/001B33Y30/00B33Y50/02B33Y70/00C04B35/10
Inventor 陈勃生陈叶
Owner 陈勃生
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