CN1486828A - Melting and depositing technique and process for making prototypo covering mold quickly - Google Patents
Melting and depositing technique and process for making prototypo covering mold quickly Download PDFInfo
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- CN1486828A CN1486828A CNA031421792A CN03142179A CN1486828A CN 1486828 A CN1486828 A CN 1486828A CN A031421792 A CNA031421792 A CN A031421792A CN 03142179 A CN03142179 A CN 03142179A CN 1486828 A CN1486828 A CN 1486828A
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Abstract
Based on the features of fusion and deposition manufacture (FDM) fast prototype and practical engineering requirement, the present invention proposes one kind of fast mold making technique and process based directly on FDM fast prototype. The prototype is first made via FDM fast forming process and then reinforced by means of chemical and physical processing. After that, the prototype is painted with F23 resin, polished and sprayed to make the FDM prototype obtain high surface smoothness and maintain original strength so as to meet the requirement for making high quality product sample with silica gel mold. The prenent invention makes it possible to fasten the sample manufacture in developing product and has important engineering value and obvious economic utility.
Description
Technical field:
The present invention relates to a kind of fusion sediment manufacturing (Fuse Deposition Modeling, hereinafter to be referred as FDM) rapid prototype component covers mould technology and technology, particularly a kind of directly based on the FDM rapid prototype component, utilize the processing method of chemistry and physics, make the FDM prototype keep original intensity, reach higher surface smoothness simultaneously, satisfy rapid die-manufacturing method and technology that silica gel mould is made high quality of products exemplar demand, belong to machine-building
Technical field.
Background technology:
Because being growing more intense of globalizing market competition, the update speed of product is more and more faster, and the development rate of new product becomes decision enterprise destiny key factor.Rapid shaping and fast mould obtain industrial quarters and generally pay attention to and extensive use as the important technology that enables of accelerating product development speed.Utilize rapid shaping technique, ocular estimate, assembling check, the design that design department can carry out product checked etc., thereby can in time find defective and mistake in the design before making in batches.But all quick shaping process now are single-piece and make, the cost of manufacture height, and each technology to make material all be conditional, be difficult to satisfy the requirement that client's small lot and specific materials are made.The prototype made from rapid shaping technique is a template, the effective way of utilizing silica gel fast mould technology just to become to address this problem.
Because rapid shaping adopts the manufacture of layering stack, regular meeting forms many tiny steps on the surface of rapid prototyping (especially tilting and curved surface).When answering mould with silica gel mould, these steps will be transferred to the mold cavity surface of silica gel mould on the one hand, and it is poor with the surface quality of workpieces of this die casting to make; This step effect has increased the demoulding difficulty between rapid prototyping and the silica gel mould simultaneously, so, before making silica gel mould, must carry out processing such as surface finish to rapid prototyping.At present, in the prior art, ripe quick shaping process commonly used has cubic light moulding (SLA), selective laser sintering (SLS), fusion sediment moulding (FDM) etc., though the rapid prototyping that SLA, SLS make has surface quality preferably, intensity is lower, duplicates high-quality especially during the Transparent Parts polishing with this as prototype, very easily damage the form accuracy on prototype surface, therefore, for the high product parts of quality requirement, usually adopt the multiple modeling method of secondary.The i.e. rapid prototype component of making of rapid shaping, at first make a secondary silica gel mould, the part of similar engineering plastics of cast carries out meticulous polishing to this part then behind the holder mould, be that parent form is made the second secondary silica gel mould with the part after this polishing again, water and outpour required part.Such process time is long, the cost height.The used material of FDM is the ABS engineering plastics, though the prototype of making has good intensity, surface smoothness is the poorest, in addition because " anisotropy " of the basic material that brings of thread accumulation, so prototype almost can not directly be polished, be polished.
Summary of the invention:
Be deficiency and the defective that overcomes prior art, the present invention is directed to the characteristics and the engineering actual demand of fusion sediment manufacturing (FDM) rapid prototype component, an a kind of rapid die-manufacturing method and technology are proposed, directly based on the FDM rapid prototype component, utilize the processing method of chemistry and physics, make the FDM prototype keep original intensity, reach higher surface smoothness simultaneously, satisfy the demand that silica gel mould is made the high quality of products exemplar.The technical process of technical solution of the present invention is as follows:
1, the body to the FDM prototype strengthens processing
Under the direct driving of three-dimensional CAD data, the prototype that FDM technology is made usually since support with prototype have contact-making surface, remove backing material after, can make prototype surface silk material loose, even break away from body, make follow-up surface treatment be difficult to have a strong substrate.So before carrying out the prototype surface treatment, apply one deck chloroform (claiming chloroform again), these defectives are repaired, strengthen processing.
2, the surface to prototype applies
To strengthening other material of prototype surface-coated of handling through chloroform, its main purpose is the step and the microfilament material gap of filling the rapid prototype component surface.Requirement to this material is: the ABS material is had certain adhesive force, and difficult drop-off corrodes but can not produce dissolving to the matrix ABS plastic; Material is harder slightly than ABS, helps strengthening matrix, and quality is fine and close fine and smooth, is convenient to be polished into smooth surface; Nitro paint can be adhered to, but corrosion can not be produced; Hardening time is short; It is little to solidify after-contraction, can not make the prototype distortion; To human body safety.Through development test in many ways, selected the F23 resin of French AXSON company for use.F23 is a kind of pair of component (base-material+curing agent), the material of normal temperature cure, 45 minutes hardening times fully.Solidifying the back is white, can reach above-mentioned to covering the mold materials requirement, and result of use is good.
3, the surface of prototype is slightly thrown
After the F23 that treats FDM prototype surface-coated solidifies fully, successively with 600 orders and 1000 purpose silicon carbide papers polishing prototype surface, until its no obvious cut in surface.
4, surface spraying
Be placed in the baking oven behind the moisture of place to go, slightly throwing good prototype with the nitrocellulose primer spraying prototype surface after the dimethylbenzene dilution.
5, the smart throwing
If the exemplar of multiple mould is as transparent parts such as vehicle lamp light-distributing mirrors, also need prototype is carried out further smart the throwing.
6 silica gel moulds are made and the part cast
With the FDM rapid prototype component after handling is sample, makes silica gel mould, the cast exemplar.The manufacturing of silica gel mould and the vacuum pouring of part are identical with general technology.
The manufacturing of product exemplar is an important step in the new product development, the Products Development process there is decisive influence, content of the present invention relates to a kind of Rapid Manufacturing Technology and technology of product exemplar, can accelerate the exemplar manufacturing in the product development, have important engineering practical value and remarkable economic efficiency.
The specific embodiment:
Below in conjunction with the multiple mould processing procedure of a car side lamp lens exemplar, concrete implementing process method of the present invention is further described:
1. under the direct driving of cad data, adopt fusion sediment manufacturing (FDM) technology, make the rapid prototype component of car side lamp lens of the ABS engineering plastics.
2. the matrix to the FDM prototype carries out chloroform enhancing processing.Apply one deck chloroform (claiming chloroform again) at FDM prototype basal surface,, will try one's best during coating evenly, should deposition not arranged on the surface because chloroform has the effect of melting to the ABS material.After coating finishes, be about the round end instrument of 5mm, with the silk material compacting of loose part with diameter.Such processing makes defect part combine closely with body on the one hand, is unlikely to influence subsequent treatment, has also strengthened the bulk strength of prototype on the other hand, the fracture damage of prototype when reducing the silica gel demoulding.After above-mentioned the finishing dealing with, prototype placed in 60～70 ℃ the baking oven and placed about 30 minutes, make chloroform infiltrate through the prototype body fully, residual chloroform is fully volatilized.
3. the FDM prototype that strengthens after handling through chloroform is applied the F23 resin.
1) batching.According to the size of coating surface, get the base-material and the curing of F23 resin in 5: 1 ratio
Agent is some, in order to reduce viscosity, increases penetration, and increases the coating operating time, gets tree again
The dimethylbenzene of fat total amount about 20～30%.Three kinds of raw materials are placed on three containers respectively to be built in
In the type vacuum injecting and forming machine, deaeration is 10 minutes under vacuum environment, and mixing then stirs the three
Standby.
2) apply.With the fillet thin slice of bamboo chip or hard rubber, that the F23 blade coating that mixes is fast in FDM
Speed prototype surface, coating thickness will be tried one's best evenly, from appearance, fills out that to cover the FDM interlayer little
Thin step gets final product.Because the two mixed curing rates of component of F23 are fast, pot life is shorter,
Be preferably in 5～8 fens clock times, applied institute and joined raw material.
4. thick the throwing.After the F23 that treats FDM prototype surface-coated solidifies fully, rough polishing is carried out on FDM prototype surface.With 600 purpose silicon carbide papers polishing prototype surface, there is not tangible F23 resin projection earlier until the prototype surface; Under flowing water or in the water of submergence prototype, with 1000 purpose silicon carbide papers, polishing prototype surface does not have tangible cut up to its surface then.
5. surface spraying.Place 60 ℃ baking oven with slightly throwing good prototype, and open the fan in the baking oven, accelerate the moisture evaporation on prototype surface on the one hand, prevent the prototype inequality of being heated simultaneously, cause the prototype distortion.From baking oven, take out prototype after 10～15 minutes, treat to cool off fully.The nitrocellulose primer that motor vehicle repair is used dilutes with dimethylbenzene, and the proportioning of dimethylbenzene and priming paint is about 10: 1, can guarantee fully that like this film thickness on prototype surface is even.Priming paint after the dilution is placed in the air pressure spray gun, be sprayed at FDM prototype surface, during spraying, lance head will guarantee to keep with the prototype surface distance of 30～50cm, to guarantee not wash out the paint film that has been sprayed on the prototype surface.If multiple mould is general nontransparent part, behind the volatile dry of waiting to spray paint, the processing of FDM prototype has so far just been finished.
6. smart the throwing.To the vehicle lamp light-distributing mirror in the present embodiment is transparent parts, also needs prototype is carried out further smart the throwing.Promptly wait to spray paint behind the volatile dry, prototype is placed in the type vacuum injecting and forming machine, under vacuum environment, kept about 5 minutes, the exposure so that the micro-bubble under the paint film breaks, to fill up with the nitrocellulose primer of above-mentioned dimethylbenzene dilution because of the surperficial pitting that bubble eruption stays, after the drying, use the meticulous silicon carbide paper of 2000 purposes sanding and polishing under current again, after treating the prototype drying, be about 15: 1 dilution priming paint spraying prototype surface with the proportioning of dimethylbenzene and priming paint, after the lacquer mould drying, if the prototype smooth surface is seamless, prototype promptly disposes, if also have tiny cut, available wool polishing felt is smeared polishing agent and further polished.
7. silica gel mould is made and the part cast.With the FDM rapid prototype component after handling is sample, makes silica gel mould, the cast exemplar.The manufacturing of silica gel mould and the vacuum pouring of part are identical with general technology.
Claims (3)
1. a fusion sediment manufacturing rapid prototyping covers mould technology and technology, it is characterized in that this process comprises the steps:
1) under the direct driving of cad data, adopts fusion sediment manufacturing (FDM) technology, make rapid prototype component;
2) apply chloroform at FDM prototype basal surface, apply finish after, be about the round end instrument of 5mm with diameter, with the silk material compacting of loose part, prototype placed places about 30 minutes backs in 60～70 ℃ the baking oven and take out;
3) at the FDM prototype surface-coated F23 resin that strengthens through chloroform after handling, fillet thin slice with bamboo chip or hard rubber, the resin that base-material and curing agent among a certain proportion of dimethylbenzene, the F23 are mixed is in 5～8 minutes, and evenly blade coating is in FDM rapid prototype component surface;
4) after the F23 that treats FDM prototype surface-coated solidifies fully, rough polishing is carried out on FDM prototype surface, earlier with the 600 purpose silicon carbide papers prototype surface of polishing; Under flowing water or in the water of submergence prototype, polish then with 1000 purpose silicon carbide papers;
5) prototype that will slightly throw places 60 ℃ baking oven, and opens the fan in the baking oven, takes out prototype after 10～15 minutes from baking oven, after treating to cool off fully, the nitrocellulose primer that motor vehicle repair is used dilutes with dimethylbenzene, and dilution ratio is 10: 1, is sprayed at FDM prototype surface;
6) wait to spray paint behind the volatile dry, prototype is placed in the type vacuum injecting and forming machine, under vacuum environment, kept about 5 minutes, fill up with the nitrocellulose primer of above-mentioned dimethylbenzene dilution again, after the drying, with the meticulous silicon carbide paper of 2000 purposes sanding and polishing under current, after treating the prototype drying, be about 15: 1 dilution priming paint spraying prototype surface with the proportioning of dimethylbenzene and priming paint, after the lacquer mould drying, if also have tiny cut, available wool polishing felt is smeared polishing agent and is further polished;
7) be sample with the FDM rapid prototype component after handling, make silica gel mould, the cast exemplar.
2. fusion sediment according to claim 1 is made rapid prototyping and is covered mould technology and technology, and its feature also is: the base-material of F23 resin and the proportioning of curing agent are 5: 1, the addition of dimethylbenzene be among the F23 base-material and curing agent total amount 20～30%.Three kinds of raw materials are placed on three containers respectively are built in the type vacuum injecting and forming machine, deaeration is 10 minutes under vacuum environment, and mixing for standby use stirs.
3. fusion sediment according to claim 1 is made rapid prototyping and is covered mould technology and technology, and its feature also is: the nitrocellulose primer of dilution will place in the air pressure spray gun, and during spraying, lance head keeps the distance of 30～50cm apart from the prototype surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031421792A CN100386189C (en) | 2003-08-12 | 2003-08-12 | Melting and depositing technique and process for making prototypo covering mold quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031421792A CN100386189C (en) | 2003-08-12 | 2003-08-12 | Melting and depositing technique and process for making prototypo covering mold quickly |
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| Publication Number | Publication Date |
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| CN1486828A true CN1486828A (en) | 2004-04-07 |
| CN100386189C CN100386189C (en) | 2008-05-07 |
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| CNB031421792A Expired - Fee Related CN100386189C (en) | 2003-08-12 | 2003-08-12 | Melting and depositing technique and process for making prototypo covering mold quickly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991861A (en) * | 2012-12-11 | 2013-03-27 | 金红叶纸业集团有限公司 | Container and manufacturing method thereof, and paper product with container |
| CN102987969A (en) * | 2012-12-11 | 2013-03-27 | 金红叶纸业集团有限公司 | Container and manufacturing method thereof, and household paper with container |
| CN105666750A (en) * | 2016-03-17 | 2016-06-15 | 路文虎 | Preparation process and casting mould for cast product based on 3D printing technology |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032638A (en) * | 1987-10-17 | 1989-05-03 | 李义舟 | The manufacturing of wounded in the battle fiberglass case shell and mould thereof |
| EP0655317A1 (en) * | 1993-11-03 | 1995-05-31 | Stratasys Inc. | Rapid prototyping method for separating a part from a support structure |
| US6270335B2 (en) * | 1995-09-27 | 2001-08-07 | 3D Systems, Inc. | Selective deposition modeling method and apparatus for forming three-dimensional objects and supports |
| CN1204277A (en) * | 1995-09-27 | 1999-01-06 | 3D系统公司 | Method and apparatus for data manipulation and system control in selective deposition modeling system |
| CN1166459C (en) * | 2002-11-21 | 2004-09-15 | 西安交通大学 | Manufacture method of intelligence integral dies of arc spraying and brush plating |
-
2003
- 2003-08-12 CN CNB031421792A patent/CN100386189C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991861A (en) * | 2012-12-11 | 2013-03-27 | 金红叶纸业集团有限公司 | Container and manufacturing method thereof, and paper product with container |
| CN102987969A (en) * | 2012-12-11 | 2013-03-27 | 金红叶纸业集团有限公司 | Container and manufacturing method thereof, and household paper with container |
| CN102991861B (en) * | 2012-12-11 | 2015-05-06 | 金红叶纸业集团有限公司 | Container and manufacturing method thereof, and paper product with container |
| CN105666750A (en) * | 2016-03-17 | 2016-06-15 | 路文虎 | Preparation process and casting mould for cast product based on 3D printing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100386189C (en) | 2008-05-07 |
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Granted publication date: 20080507 Termination date: 20100812 |