CN104226906A - Method for manufacturing cavity die - Google Patents
Method for manufacturing cavity die Download PDFInfo
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- CN104226906A CN104226906A CN201410501334.7A CN201410501334A CN104226906A CN 104226906 A CN104226906 A CN 104226906A CN 201410501334 A CN201410501334 A CN 201410501334A CN 104226906 A CN104226906 A CN 104226906A
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- core block
- dnockout core
- master mold
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- full pattern
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Abstract
The invention relates to a method for manufacturing a cavity die. The method comprises the following steps: preparing materials; using a paraffin blank to manufacture a product sample female die without any technology; mixing magnesia with magnesium chloride solution in proportion and stirring the mixture into pasty or muddy composition, and manufacturing active core blocks required for the whole die on the paraffin sample female die with the filler in a form imitation manner, wherein the imitated active core blocks are manufactured from inside to outside by the rule that the inner active core block is smaller, and the outer active core block is bigger; putting the manufactured paraffin sample female die and the active core blocks into a box body and using cement to fully fill the box body to manufacture an upper half die and a lower half die; opening the upper half die and the lower half die, taking out the imitated active core blocks one by one in the reverse imitation order, performing edge and burr finishing on each active core block, and performing reassembly of finished active core blocks and die assembly finally, so as to start wax injection production. According to the method, various dies with complex structures can be manufactured, and the manufactured dies are exquisite and attractive in overall design, and smooth and natural in the cavity.
Description
Technical field
The invention belongs to mould applications, be specifically related to a kind of manufacture method of type cavity mould.
Background technology
Mould is the important process equipment of modern industry, and therefore the manufacture of mould also just seems and is even more important.Along with the develop rapidly of China's industry, the update frequency of product is accelerated day by day, and the kind of product becomes more diverse, and the design of product also more tends to naturalization, complicated, and this just has higher requirement to the design and manufaction technology of mould.The mould imitating the method manufacture adaptation modern product such as type full pattern mould design and manufacturing technology with traditional rigid processing and wood in the past can become more and more difficult.For the mould of internal structure complexity, prior art can not manufacture under manual condition, even if adopt existing various machinery to go material processing, also cannot manufacture.The mould needing N number of dnockout core block for complex structure does not also have the method that once can process at present, usually can produced labyrinth mould be so now, complicated die is split into several even tens simplification moulds, manufacture the mould of respective numbers respectively, and then the tooling fixture that design and manufaction out can combine respective numbers simplification mould will be distinguished, again simplification die assembly is welded into product full pattern body, this method design is complicated, the machining apparatus needed is many, cause business manpower, material resources, the waste of financial resources, also the delay of producing the duration may be caused due to the difficulty of Making mold for complex-shaped surface mould.
Summary of the invention
Technical problem to be solved by this invention overcomes above-mentioned deficiency, provides a kind of manufacture method of type cavity mould, and can manufacture various baroque mould by the method, the mould and die accuracy of manufacture is high.
Technical scheme of the present invention: a kind of manufacture method of type cavity mould, comprises the following steps:
(1) get the raw materials ready, according to hot investment casting product use injection wax material type cavity mould, material selects industrial paraffin, magnesia, cement, for subsequent use;
(2) make wax full pattern master mold, be purchased and weigh industrial paraffin and make raw material, be placed in special melter, heating and melting, makes the container of required size with galvanized iron sheet, pour in galvanized iron sheet container by the paraffin after melting, natural condensation, forms paraffin blank material for subsequent use; Be under the environment of 20 DEG C ± 5 DEG C in room temperature, according to the reduced scale of cast product drawing technical requirement and the selection of material, make of paraffin blank that getting ready with the wax full pattern master mold of the cast product of drawing requirement size, by finishing make wax full pattern master mold reach product technical requirement and confirm qualified;
(3) dnockout core block is made, be under the environment of 20 DEG C ± 5 DEG C in room temperature, the magnesia got ready and magnesium chloride solution are stirred into pasty state or pureed synthetic in proportion, smearing release agent on step (2) ready-made wax full pattern master mold, wax full pattern master mold is first determined the position of the 1st the dnockout core block that will make, the synthetic be stirred is filled into by the method for profiling filler the position that wax full pattern master mold determines the 1st the dnockout core block that will go out, until its solidify reach hardness after obtain the 1st dnockout core block, smearing release agent on obtained dnockout core block, in the same way in adjacent upper of the 1st dnockout core block, lower or left, the 2nd dnockout core block is copied in right position, the contact surface of adjacent two dnockout core blocks is tightly fitted, analogize imitated 3rd ~ N number of dnockout core block in proper order, the dnockout core block copied follow outside after first, inner small and outside big rule is carried out, until the dnockout core block needed for whole type cavity mould all completes,
(4) upper and lower half module is made, make the identical iron sheet split casing of sectional area according to ready-made wax full pattern master mold and the dnockout core blocks design copied, bottom half is chosen suitable die joint and makes the false tire of a somatotype, and at somatotype false tire surface smear releasing agent, bottom half is chosen correct position design pressure wax mouth, being placed in casing after the dnockout core block copied and wax full pattern master mold surface smear releasing agent, with cement, the space in casing is tamped, after it solidifies, obtain female die; False for somatotype on female die tire is taken down, exposed outside female die dnockout core block and wax full pattern master mold and female die cement die joint together after smearing release agent, female die places upper case half, with cement the space in upper case half is tamped and treat that it solidifies and namely obtain upper mold section;
(5) die sinking, opens upper and lower half module, is sequentially taken out one by one by imitated dnockout core block by oppositely imitated, namely imitated at first dnockout core block last go out, then by each dnockout core block finishing burr and burr, finally the dnockout core block trimmed is re-assemblied matched moulds, can start to press wax to produce.
Described magnesia, cement can use one or more replacements in land plaster, epoxy resin, silicon rubber.
Wax full pattern master mold in above-mentioned steps (2) adopts filler to imitate type manufacture technics.
Described wax full pattern master mold can install the process bar preventing from being out of shape additional.
Described wax full pattern master mold can add a set of running gate system and cup.
The present invention compared with prior art has following beneficial effect: 1, manufacture method of the present invention is simple, manufacturing speed is fast, and cost is low, select industrial paraffin, land plaster, magnesia, cement, epoxy resin, silicon rubber etc., the cost of material is low for these, and possessed flowable, plasticity, can from hard-condition, industrial paraffin also can be recycled.2, adopt filler to imitate the technique of type, decrease bring because Design of Dies processing various equipment, human and material resources and raw-material consumption, reduce the cost of enterprise, improve the economic benefit of enterprise.3, the inventive method can manufacture various baroque mould, and the mold integral moulding exquisiteness manufactured is attractive in appearance, the smooth nature of die cavity.
Detailed description of the invention
A manufacture method for type cavity mould, comprises the following steps:
(1) get the raw materials ready, according to hot investment casting product use injection wax material type cavity mould, material selects industrial paraffin, magnesia, cement, for subsequent use;
(2) make wax full pattern master mold, be purchased and weigh industrial paraffin and make raw material, be placed in special melter, heating and melting, makes the container of required size with galvanized iron sheet, pour in galvanized iron sheet container by the paraffin after melting, natural condensation, forms paraffin blank material for subsequent use; Be under the environment of 20 DEG C ± 5 DEG C in room temperature, according to the reduced scale of cast product drawing technical requirement and the selection of material, make of paraffin blank that getting ready with the wax full pattern master mold of the cast product of drawing requirement size, by cross finishing make wax full pattern master mold reach product technical requirement and confirm qualified;
(3) dnockout core block is made, be under the environment of 20 DEG C ± 5 DEG C in room temperature, the magnesia got ready and magnesium chloride solution are stirred into pasty state or pureed synthetic in proportion, smearing release agent on step (2) ready-made wax full pattern master mold, wax full pattern master mold is first determined the position of the 1st the dnockout core block that will make, the synthetic be stirred is filled into by the method for profiling filler the position that wax full pattern master mold determines the 1st the dnockout core block that will go out, until its solidify reach hardness after obtain the 1st dnockout core block, smearing release agent on obtained dnockout core block, in the same way in adjacent upper of the 1st dnockout core block, lower or left, the 2nd dnockout core block is copied in right position, the contact surface of adjacent two dnockout core blocks is tightly fitted, analogize imitated 3rd ~ N number of dnockout core block in proper order, the dnockout core block copied follow outside after first, inner small and outside big rule is carried out, until the dnockout core block needed for whole type cavity mould all completes,
(4) upper and lower half module is made, make the identical iron sheet split casing of sectional area according to ready-made wax full pattern master mold and the dnockout core blocks design copied, bottom half is chosen suitable die joint and makes the false tire of a somatotype, and at somatotype false tire surface smear releasing agent, bottom half is chosen correct position design pressure wax mouth, being placed in casing after the dnockout core block copied and wax full pattern master mold surface smear releasing agent, with cement, the space in casing is tamped, after it solidifies, obtain female die; False for somatotype on female die tire is taken down, exposed outside female die dnockout core block and wax full pattern master mold and female die concrete die joint together after smearing release agent, female die places upper case half, with cement the space in upper case half is tamped and treat that it solidifies and namely obtain upper mold section;
(5) die sinking, opens upper and lower half module, is sequentially taken out one by one by imitated dnockout core block by oppositely imitated, namely imitated at first dnockout core block last go out, then by each dnockout core block finishing burr and burr, finally the dnockout core block trimmed is re-assemblied matched moulds, can start to press wax to produce.
Can manufacture various baroque mould by the method, and the mold integral moulding exquisiteness manufactured is attractive in appearance, the smooth nature of die cavity.
Except the above description to technical scheme of the present invention, applicant also finds, for the out not existing technique secret problem of the Making mold of more current complexity, to be summarized as follows:
One, there is the problem of the technique division of history into periods in Making mold, reach more than 2500 year, technological design and the manufacture method of a kind of type cavity mould structure that disconnected is, set forth in 8th page in " Houma pottery mould art " book that this problem is published by Princeton university press, original text title " pottery mould decorative pattern designs and produces ", mention in book: a bronze, brass or copper ware before the forming, need through conceive, design, model processed, turn over model, a series of labout process such as conjunction model, casting etc., to the links of these operating process, it is very micro-that we also know.In this section words, illustrate that Chinese experts and scholars do not see clear problem, do not see with regard to allowing US Experts scholars and understand that this problem and present technology operation method difference are in the understanding of which link yet, through applicant for many years to the research of mould, find that problem just occurs in this link of operating process in fact.Before and after 2500, two kinds of mould structure preparation methods of the raw two kinds of technology operation processes of common property, one is approximate type cavity mould technique, and one is that technique imitated by wooden model.The former produces technological design thinking is make full pattern master mold with pug, original text claims model processed, and then be without size and angle with pug, the technology operation process approach of mud full pattern case mold imitated by nature filler, actual creating is that shale is similar to type cavity mould structure, original text claims to turn over model, the type cavity mould structure that Here it is will find now, and said conjunction model in original text, be exactly the matched moulds again of approximate type cavity mould structure in fact, this is for using once at that time, this technology operation process is along with social development at that time, needing progressively to be converted to the latter, to produce design of new processes thinking be with timber, it is the technology operation process approach removing to expect to make by force and join by force work by size and angle, present title wooden mold technique, actual creating is wooden natural pattern lamps structure, and then remove molding modeling, the sand evacuated mould blank structure produced closes base again, wooden full pattern mould can repeatedly use, this manufacturing process technology method spreads so far.
Two, mould structure manufacturing issue, because be subject to the impact of the technique division of history into periods, how complicated type cavity mould structure has actually, the complexity of technological design structure, the standard of structure and measure of precision, and the technological operation principle produced, just become the mystery with or without this technology." simple and clear mould work practical technique handbook " first edition the 743rd page that this problem is published in China Machine Press, one section of original text in the second edition the 811st page: " mould research work; except there is a mould research institute in Japan; at present; other countries there is no independently research institution; be only provided with research department in large factory of major company, what have assists to do mould research with universities and colleges." this just illustrates prior art existing problems; and mould research work appeals to see that who can find the manufacturing process technology method of this mould structure in world's mould manufacturing field; the help signal sent; take this opportunity the present invention just in time in world's mould manufacturing field and mould research work prove really have one " type cavity mould manufacturing process technology method " that this mould structure manufacture can be realized.The present invention is by the technology method before more than 2500 years, again emerge, and reduce whole process, simultaneously according to the present standard to type cavity mould structure and precision, and the technical requirement such as reusable, the operating process of specification filler imitative full pattern continuously, thus ensureing the standard of mould structure and the manufacturing process technology method of precision, the present invention that Here it is is in world's mould manufacturing field and mould research work has filled up the blank not having " type cavity mould manufacturing process technology method ".
Three, this mould structure can not cut the problem of pin processing, the present invention is the problem of the natural structure standard that produces of the continuous profiling of filler and precision, all go material cut pin processing all cannot manufacture, even if there is now 3D to print packing technique and laser sintering technology, because there is no the support of present invention process theory, cannot accomplish too.
Claims (5)
1. a manufacture method for type cavity mould, is characterized in that it comprises the following steps:
Get the raw materials ready, according to hot investment casting product use injection wax material type cavity mould, material selects industrial paraffin, magnesia, cement, for subsequent use;
Make wax full pattern master mold, be purchased and weigh industrial paraffin and make raw material, be placed in special melter, heating and melting, make the container of required size with galvanized iron sheet, the paraffin after melting is poured in galvanized iron sheet container, natural condensation, form paraffin blank material for subsequent use; Be under the environment of 20 DEG C ± 5 DEG C in room temperature, according to the reduced scale of cast product drawing technical requirement and the selection of material, make of paraffin blank that getting ready with the wax full pattern master mold of the cast product of drawing requirement size, by cross finishing make wax full pattern master mold reach product technical requirement and confirm qualified;
Make dnockout core block, be under the environment of 20 DEG C ± 5 DEG C in room temperature, the magnesia got ready and magnesium chloride solution are stirred into pasty state or pureed synthetic in proportion, smearing release agent on step (2) ready-made wax full pattern master mold, wax full pattern master mold is first determined the position of the 1st the dnockout core block that will make, the synthetic be stirred is filled into by the method for profiling filler the position that wax full pattern master mold determines the 1st the dnockout core block that will go out, until its solidify reach hardness after obtain the 1st dnockout core block, smearing release agent on obtained dnockout core block, in the same way in adjacent upper of the 1st dnockout core block, lower or left, the 2nd dnockout core block is copied in right position, the contact surface of adjacent two dnockout core blocks is tightly fitted, analogize imitated 3rd ~ N number of dnockout core block in proper order, the dnockout core block copied follow outside after first, inner small and outside big rule is carried out, until the dnockout core block needed for whole type cavity mould all completes,
Make upper and lower half module, make the identical iron sheet split casing of sectional area according to ready-made wax full pattern master mold and the dnockout core blocks design copied, choose suitable die joint on the whole at full pattern master mold and the dnockout core block copied and make the false tire of a somatotype, full pattern master mold is chosen correct position design pressure wax mouth, after the dnockout core block copied and wax full pattern master mold surface and the false tire smearing release agent of somatotype, upper half chests is positioned on the false tire of somatotype, with cement, the space in casing is tamped, after it solidifies, obtain upper mold section; False for somatotype on upper mold section tire is taken down, exposed outside upper mold section dnockout core block and wax full pattern master mold and upper mold section cement die joint together after smearing release agent, upper mold section places bottom half, with cement the space in upper case half is tamped and treat that it solidifies and namely obtain female die;
(5) die sinking, opens upper and lower half module, is sequentially taken out one by one by imitated dnockout core block by oppositely imitated, namely imitated at first dnockout core block last go out, then by each dnockout core block finishing burr and burr, finally the dnockout core block trimmed is re-assemblied matched moulds, can start to press wax to produce.
2. the manufacture method of type cavity mould according to claim 1, is characterized in that described magnesia, cement can use one or more replacements in land plaster, epoxy resin, silicon rubber.
3., according to the manufacture method of the type cavity mould described in claim 1, it is characterized in that the wax full pattern master mold in step (2) can not adopt wooden mold manufacture technics.
4. the manufacture method of type cavity mould according to claim 1, is characterized in that described wax full pattern master mold can install additional the process bar preventing from being out of shape.
5. the manufacture method of the type cavity mould according to any one of Claims 1-4, is characterized in that described wax full pattern master mold can add a set of running gate system and cup.
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| CN201410501334.7A CN104226906B (en) | 2014-09-26 | 2014-09-26 | A kind of manufacture method of type cavity mould |
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| CN201410501334.7A CN104226906B (en) | 2014-09-26 | 2014-09-26 | A kind of manufacture method of type cavity mould |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145085A (en) * | 2017-12-27 | 2018-06-12 | 重庆市华阳光学仪器有限公司 | A kind of telescope steel shell cast shaping process |
| CN109014035A (en) * | 2018-07-27 | 2018-12-18 | 武汉理工大学 | The method that hot investment casting wax-pattern is quickly prepared using gypsum and silica gel composition mode |
| CN109480415A (en) * | 2018-12-10 | 2019-03-19 | 梦工场珠宝企业管理有限公司 | A kind of jewelry 3D printing die-manufacturing method |
| CN113617949A (en) * | 2021-08-13 | 2021-11-09 | 南京思创精密模具有限公司 | Manufacturing process of stamping die |
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| CN1223914A (en) * | 1998-12-21 | 1999-07-28 | 纪汉伟 | Process for making mould by wax injection |
| CN1593810A (en) * | 2004-07-17 | 2005-03-16 | 纪汉伟 | Technology and method for manufacturing low-cost die using industrial paraffin wax |
| CN101623922A (en) * | 2009-07-31 | 2010-01-13 | 上海永言特种材料研究所 | Manufacturing technology of integral inner and outer inverted V-shaped or inner inverted V-shaped iron-based alloy inner bushing |
| EP2316593A2 (en) * | 2009-10-28 | 2011-05-04 | Howmet Corporation | Fugitive core tooling and method |
| CN102784887A (en) * | 2012-08-24 | 2012-11-21 | 洛阳刘氏模具有限公司 | Lost foam casting die of transmission gear box body of heavy truck |
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2014
- 2014-09-26 CN CN201410501334.7A patent/CN104226906B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223914A (en) * | 1998-12-21 | 1999-07-28 | 纪汉伟 | Process for making mould by wax injection |
| CN1593810A (en) * | 2004-07-17 | 2005-03-16 | 纪汉伟 | Technology and method for manufacturing low-cost die using industrial paraffin wax |
| CN101623922A (en) * | 2009-07-31 | 2010-01-13 | 上海永言特种材料研究所 | Manufacturing technology of integral inner and outer inverted V-shaped or inner inverted V-shaped iron-based alloy inner bushing |
| EP2316593A2 (en) * | 2009-10-28 | 2011-05-04 | Howmet Corporation | Fugitive core tooling and method |
| CN102784887A (en) * | 2012-08-24 | 2012-11-21 | 洛阳刘氏模具有限公司 | Lost foam casting die of transmission gear box body of heavy truck |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145085A (en) * | 2017-12-27 | 2018-06-12 | 重庆市华阳光学仪器有限公司 | A kind of telescope steel shell cast shaping process |
| CN109014035A (en) * | 2018-07-27 | 2018-12-18 | 武汉理工大学 | The method that hot investment casting wax-pattern is quickly prepared using gypsum and silica gel composition mode |
| CN109480415A (en) * | 2018-12-10 | 2019-03-19 | 梦工场珠宝企业管理有限公司 | A kind of jewelry 3D printing die-manufacturing method |
| CN113617949A (en) * | 2021-08-13 | 2021-11-09 | 南京思创精密模具有限公司 | Manufacturing process of stamping die |
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| CN104226906B (en) | 2016-04-20 |
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