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Method and device for forming a moldless material

A material molding and molding method technology, applied in ceramic molding machines, ceramic molding workshops, manufacturing tools, etc., can solve the problems of uneven mixing and poor controllability of moldless molding, and achieve easy control of curing, high density, and improved The effect of stability

Active Publication Date: 2017-12-29
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides a moldless material molding method and device, the purpose of which is to solve the problem by separating the initiation system and the monomer and adjusting the addition ratio of the initiation system and the molding conditions. The technical problems of uneven mixing and poor controllability when the in-situ curing method is used for moldless molding

Method used

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  • Method and device for forming a moldless material
  • Method and device for forming a moldless material

Examples

Experimental program
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preparation example Construction

[0027] (1) Preparation of monomer premix: adding organic monomers and water-soluble polymers into deionized water to form a solution, the mass ratio of which is: organic monomers: water-soluble polymers: water=15~40:0.3~5 :100;

[0028](2) Preparation of the first and second slurries: the first slurries contain catalysts, and their specific components include: solvents, dispersants, powder materials, polymerizable monomers, crosslinking agents, viscosity regulators, water-soluble Polymers, pH regulators, defoamers and catalysts can be formulated according to the general ratio. This method can be applicable to adding catalyst and self-catalyzed material, wherein the preferably adding volume of the catalyst solvent of adding catalyst is 0.1~6vol% of the volume of the first slurry, within this range by adjusting the addition amount of initiator and catalyst and its Ratio, controllable induction period is 5s ~ 5min, suitable for moldless molding process; the second slurry contain...

Embodiment 1

[0042] A material forming device such as figure 1 As shown, it includes first and second storage containers, a premixing device and a 3D printing device, the first and second storage containers are connected to the premixing device, and the premixing device is connected to the nozzle of the 3D printing device; The premixing device includes two feeding ports 11 , a mixing chamber 6 , stirring blades 7 and a motor 5 . The first and second storage containers 2 and 3 are connected to a premixing device, and the premixing device is connected to a nozzle 10 of a 3D printing device; the premixing device includes a mixing chamber 6 with two feeding ports 11 , stirring blade 7 and motor 5, the feed inlet is connected with the first and second storage containers 2 and 3 respectively, the stirring blade 7 is placed in the mixing chamber 6, the stirring blade 7 is connected with the motor 5, Stirring is carried out in the mixing chamber 6 driven by the motor 5 . Wherein the nozzle 10 is...

Embodiment 2

[0044] A material forming device such as figure 2 As shown, it includes first and second storage containers, a premixing device and a 3D printing device, the first and second storage containers are connected to the premixing device, and the premixing device is connected to the nozzle of the 3D printing device; The premixing device includes two feeding ports 11 , a mixing chamber 6 , stirring blades 7 and a motor 5 . The first and second storage containers 2 and 3 are connected to a premixing device, and the premixing device is connected to a nozzle 10 of a 3D printing device; the premixing device includes a mixing chamber 6 with two feeding ports 11 , stirring blade 7 and motor 5, the feed inlet is connected with the first and second storage containers 2 and 3 respectively, the stirring blade 7 is placed in the mixing chamber 6, the stirring blade 7 is connected with the motor 5, Stirring is carried out in the mixing chamber 6 driven by the motor 5 . Wherein the nozzle 10 i...

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Abstract

The invention discloses a mold-free material forming method and device. The method is an in-situ curing powder forming method and mainly comprises the steps that first paste containing a catalyst and second paste containing an initiator serve as 3D printing materials respectively, and printing forming is carried out in an inducing period after pre-mixing is carried out. The device comprises a first material storage container, a second material storage container, a pre-mixing device and a 3D printing device. The first material storage container and the second material storage container are connected with the pre-mixing device, and the pre-mixing device is connected with a spray nozzle of the 3D printing device. The pre-mixing device comprises a mixing cavity with two feeding ports, stirring blades and a motor. The feeding ports are connected with the first material storage container and the second material storage container respectively, and the stirring blades are arranged in the mixing cavity and connected with the motor and carry out stirring in the mixing cavity under the driving of the motor. By means of the method and the device, the paste is evenly mixed, operability is high, and the method and the device are suitable for mold-free precision manufacturing of compact components in complex shapes.

Description

technical field [0001] The invention belongs to the field of material forming, and more specifically relates to a material forming method and device. Background technique [0002] Moldless manufacturing is a new type of material forming process that has developed extremely rapidly in recent years, also known as additive manufacturing, rapid manufacturing and 3D printing. Moldless molding technology converts materials from liquid to solid directly through the principle of layer-by-layer deposition and stacking to manufacture parts. Materials that can be used for moldless molding include ceramics, metals, thermoplastics, thermosets and composites. Since the material composition can be artificially controlled during the manufacturing process, blanks with different compositions can be manufactured. As a new molding method for making small batches of parts with traditional materials, the advantage of moldless molding is that it can greatly improve the molding of difficult-to-pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/00B28B15/00B22F3/10
CPCB22F3/1007B28B1/24B28B15/00
Inventor 肖建中田思宇罗敏徐坦肖然
Owner HUAZHONG UNIV OF SCI & TECH
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