CN101791688A - Model-free rapid molding device based on surface tension and molding method thereof - Google Patents

Model-free rapid molding device based on surface tension and molding method thereof Download PDF

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Publication number
CN101791688A
CN101791688A CN 201010300148 CN201010300148A CN101791688A CN 101791688 A CN101791688 A CN 101791688A CN 201010300148 CN201010300148 CN 201010300148 CN 201010300148 A CN201010300148 A CN 201010300148A CN 101791688 A CN101791688 A CN 101791688A
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China
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micropore
metal liquid
surface tension
model
pallet
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CN 201010300148
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CN101791688B (en
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赵登峰
曾国英
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Southwest University of Science and Technology
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Southwest University of Science and Technology
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Abstract

The invention discloses a model-free rapid molding device based on surface tension and a molding method thereof, relating to a model-free rapid molding device based on surface tension and a molding method thereof, which controls the condensation molding by utilizing metal liquid surface tension. The invention aims to provide the model-free rapid molding device based on the surface tension, a computer numerical value geometric model can be directly transformed into a geometric entity, and the invention is applied to materials of metal, resin and the like, and the device has high efficiency and wider application range; the other purpose of the invention is to provide a molding method of the model-free rapid molding device based on the surface tension. The technical scheme of the invention is as follows: metal liquid in a high-temperature-resistant crucible flows into a tray through micro-pores by the high-temperature-resistant crucible provided with a plurality of micro-pores at the bottom, the opening and the closing of the micro-pores are controlled by the surface tension of the metal liquid, and the flow rate of the metal liquid and the moving speed of the tray are controlled at the same time; thus the required shapes of parts are molded. The invention can be applied to model-free efficient molding of materials, such as common metal, resin and the like.

Description

Based on capillary model-free rapid molding device and forming method thereof
Technical field
The present invention relates to a kind of model-free shaped device and forming method thereof, particularly relate to a kind of utilize metal liquid surface tension control condensation moulding based on capillary model-free rapid molding device and forming method thereof.
Background technology
RP technique has been changed traditional bulk forming and has been removed the processing mode that is shaped, it is a kind of material manufacture method that adds up, can directly produce the part of complicated shape from three-dimensional digital model, be fit to the machining shape complexity difficulty shaping, difficult-to-machine material, have the part of specific (special) requirements.Show up prominently in fields such as mould manufacturing, Aero-Space, medical science, industrial art, be with a wide range of applications.The selective substantially liquid curing of rapid prototyping technology, selectivity synusia are bonding, the welding of selectivity powder or bonding, melted extrusion forming and specking printing five big classes, and concrete grammar is more.Yet shaping efficiency low for ubiquity in numerous rapid prototyping technologies, can not adapt to the bigger production of quantity, and it is rarely found to be used for the method that ordinary metallic material is shaped.
Summary of the invention
The purpose of this invention is to provide a kind of based on capillary model-free rapid molding device, this device can directly change geometry entity into by the computer numerical geometrical model, be applicable to materials such as metal, resin, and efficient height, the scope of application are more extensive, and another object of the present invention provides described forming method based on capillary model-free rapid molding device.
The objective of the invention is to realize: based on capillary model-free rapid molding device by following technical proposal, comprise a high-temperature crucible, the bottom of high-temperature crucible offers a plurality of micropores, the micropore below is provided with a pallet moving up and down, when being full of metal liquid in the micropore, metal liquid in the high-temperature crucible can flow on the pallet by micropore, and when gassy in the micropore or vacuum, metal liquid can not flow on the pallet by micropore under capillary effect.
The top of described high-temperature crucible is provided with one and can moves up and down and be used for to micropore injecting gas or metal liquid or make the mobile converter that becomes vacuum in the micropore.
Forming method based on capillary model-free rapid molding device comprises the following steps:
A, metal liquid is presented in the high-temperature crucible;
B, the break-make of micropore is set, allow metal liquid from micropore, pass through if desired, then in micropore, inject metal liquid, interrupt passing through of metal liquid in the micropore if desired by mobile converter, then can be by mobile converter injecting gas or make and become vacuum in the micropore in micropore;
C, metal liquid flow on the pallet by micropore, move down pallet, metal liquid continues to flow down and constantly is cooled to and is part, utilize the switch of the surface tension control micropore of metal liquid, control the flow of metal liquid, the translational speed of pallet simultaneously, make cooled part form required shape.
From above-mentioned feature of the present invention as can be seen, the invention has the advantages that:
(1), compare, the material ranges that this technology is suitable for is extensive, as long as the liquid of the micropore inwall of high-temperature crucible and part material does not take place to soak into, particularly is applicable to the generally metal material of use, and application prospect is more wide with existing rapid prototyping technology;
(2), compare, production efficiency improves greatly, can reach industrial rate request with existing rapid prototyping technology;
(3), compare, can directly obtain part, save numerous casting technique links by the computer numerical model with traditional casting technique;
(4), this technology need only operate the micropore that needs state to change and get final product, generally rapid prototyping technology then needs the everywhere material is all operated control;
(5), Kai Fang space environment has microgravity, high vacuum characteristic, surface tension will be most important power, the problem of not having metal liquid oxidation or other chemical reaction again, solidifying direction also can change in process of setting more neatly, therefore, space environment will more can be brought into play the advantage of this technology, and this technology is expected to play a role in utilization in the outer space structure manufacturing in future and discarded space trash.
Description of drawings
The present invention will illustrate by embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is an apparatus structure schematic diagram of the present invention
Wherein Reference numeral 1 is that high-temperature crucible 2 is that micropore 3 is that pallet 4 is that metal liquid 5 is that mobile converter 6 is parts
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing:
Preferred embodiment
As shown in Figure 1 based on capillary model-free rapid molding device, comprise a high-temperature crucible 1, the bottom of high-temperature crucible 1 offers a plurality of micropores 2, micropore 2 belows are provided with a pallet 3 moving up and down, when being full of metal liquid 4 in the micropore 2, metal liquid 4 in the high-temperature crucible 1 can flow on the pallet 3 by micropore 2, and when in the micropore 2 when gassy or vacuum, metal liquid 4 can not flow on the pallet 3 by micropore 2 under surface tension effects.
The top of described high-temperature crucible 1 is provided with one and can moves up and down and be used for to micropore 2 injecting gas or metal liquid 4 or make the mobile converter 5 that becomes vacuum in the micropore 2.
High-temperature crucible among the present invention is a critical component, its bottom is provided with the very little a plurality of micropores of spacing, molten metal liquid slowly flows out downwards by micropore, pallet moves down slowly simultaneously, guide wire liquid solidifies the formation part, the horizontal section shape of part relies on the conducting of different micropores or closes and control, the material manufacturing that high-temperature crucible is selected and molten metal does not soak into.Be in the micropore of closed condition and be full of air or vacuum, under the capillary effect of metal liquid, keep closed condition always; Be in the micropore of conducting state and be full of metal liquid, the metal liquid in the high-temperature crucible is communicated with the not solidified metal liquid in part top, formation keeps connected state metal liquid passage always.
Certain is in the micropore of conducting state, in the time of it need being transformed into closed condition, passes through mobile converter, make it aim at this micropore, drop to micropore and contact, and in micropore, inject air or make micropore become vacuum, remove mobile converter, this micropore will be in closed condition; In contrast, certain is in the micropore of closed condition, in the time of it need being transformed into conducting state, by mobile converter, make it aim at this micropore, drop to micropore and contact, and in micropore, inject metal liquid, and remove mobile converter, this micropore will be in conducting state.
This device is by the control mobile converter, and the moving of pallet, and the flow of high-temperature crucible inner metal liquid body have been realized the model-free moulding of arbitrary shape part.
Forming method based on capillary model-free rapid molding device comprises the following steps:
A, metal liquid 4 is presented in the high-temperature crucible 1;
B, the break-make of micropore 2 is set, allow metal liquid 4 from micropore 2, pass through if desired, then in micropore 2, inject metal liquid 4 by mobile converter 5, interrupt passing through of metal liquid 4 in the micropore 2 if desired, then can be by mobile converter 5 injecting gas or make and become vacuum in the micropore in micropore 2;
C, metal liquid 4 flow on the pallet 3 by micropore 2, move down pallet 3, metal liquid 4 continues to flow down and constantly is cooled to and is part 6, utilize the switch of the surface tension control micropore 2 of metal liquid 4, control the flow of metal liquid 4, the translational speed of pallet 3 simultaneously, make cooled part 6 form required shape.
Forming method of the present invention relates to and mainly contains several aspects, the one, the coordination of metal liquid flow in speed that pallet moves and the micropore, guaranteeing the moulding of metal parts, is the temperature of metal liquid and the coordination of the medium of cooling gradually in addition, guarantees needed Temperature Distribution in the process of setting.So need well to determine the speed that flow and the pallet of metal liquid by micropore moves.
The present invention is not limited to metal material, also can be other material, such as resin material etc.
Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. based on capillary model-free rapid molding device, it is characterized in that comprising a high-temperature crucible (1), the bottom of high-temperature crucible (1) offers a plurality of micropores (2), micropore (2) below is provided with a pallet moving up and down (3), when being full of metal liquid (4) in the micropore (2), metal liquid (4) in the high-temperature crucible (1) can flow on the pallet (3) by micropore (2), when middle gassy of micropore (2) or vacuum, metal liquid (4) can not flow on the pallet (3) by micropore (2) under surface tension effects.
2. according to claim 1 based on capillary model-free rapid molding device, the top that it is characterized in that high-temperature crucible (1) is provided with one and can moves up and down and be used for to micropore (2) injecting gas or metal liquid (4) or make becoming the mobile converter of vacuum (5) in the micropore (2).
3. the forming method based on capillary model-free rapid molding device according to claim 1 and 2 is characterized in that comprising the following steps:
A, metal liquid (4) is presented in the high-temperature crucible (1);
B, the break-make of micropore (2) is set, allow metal liquid (4) from micropore (2), pass through if desired, then in micropore (2), inject metal liquid (4) by mobile converter (5), interrupt passing through of metal liquid (4) in the micropore (2) if desired, then can be by mobile converter (5) injecting gas or make in the micropore (2) and become vacuum in micropore (2);
C, metal liquid (4) flow on the pallet (3) by micropore (2), move down pallet (3), metal liquid (4) continues to flow down and constantly is cooled to and is part (6), utilize the switch of the surface tension control micropore (2) of metal liquid (4), control the flow of metal liquid (4), the translational speed of pallet (3) simultaneously, make cooled part (6) form required shape.
CN 201010300148 2010-01-08 2010-01-08 Model-free rapid molding device based on surface tension and molding method thereof Expired - Fee Related CN101791688B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105235212A (en) * 2015-09-24 2016-01-13 吉林大学 Method and device for 3D printing
CN105274618A (en) * 2014-06-06 2016-01-27 硅电子股份公司 Apparatus and process for producing a crystal of semiconductor material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790453A (en) * 1971-10-26 1973-02-15 Brooks Reginald G MANUFACTURE OF METAL ARTICLES
JP2007157864A (en) * 2005-12-02 2007-06-21 Mitsubishi Electric Corp Alloy for rare-earth iron-boron based magnet, manufacturing method therefor and manufacturing device thereof
CN2900010Y (en) * 2006-06-01 2007-05-16 上海交通大学 Metal plate no-mould forming practical device
CN100381221C (en) * 2006-06-16 2008-04-16 重庆工学院 Sheet material mold-free multi-point forming device based on viscous medium transfer force and method
CN101259526B (en) * 2007-07-31 2011-02-16 机械科学研究总院先进制造技术研究中心 Non die-casting type digitalization fast manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105274618A (en) * 2014-06-06 2016-01-27 硅电子股份公司 Apparatus and process for producing a crystal of semiconductor material
CN105274618B (en) * 2014-06-06 2018-04-24 硅电子股份公司 For the apparatus and method by semi-conducting material manufacture crystal
CN105235212A (en) * 2015-09-24 2016-01-13 吉林大学 Method and device for 3D printing

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