CN105291320A - Forming process method for large O-shaped rubber sealing ring - Google Patents
Forming process method for large O-shaped rubber sealing ring Download PDFInfo
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- CN105291320A CN105291320A CN201510792880.5A CN201510792880A CN105291320A CN 105291320 A CN105291320 A CN 105291320A CN 201510792880 A CN201510792880 A CN 201510792880A CN 105291320 A CN105291320 A CN 105291320A
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- sealing ring
- rubber seal
- scale
- shape
- shaped rubber
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to the field of sealing ring manufacturing and relates to a forming process method for a large O-shaped rubber sealing ring. A route of the perimeter of the O-shaped rubber sealing ring is planned so as to be in a butterfly shape, a mold is then manufactured, a material is added, molded and vulcanized, the sealing ring is taken out and expanded on a locator, and therefore the large O-shaped rubber sealing ring is manufactured. The large O-shaped rubber sealing ring is pressed through the specially-shaped mold, the mold size use rate is effectively increased, the mold area is reduced, and the purpose that the large sealing ring is pressed through a small press is achieved.
Description
Technical field
The present invention relates to a kind of large-scale " O " shape rubber seal moulding technique, belong to sealing ring field shaping technique.
Background technology
Sealing ring diameter being greater than 200mm is defined as large-scale " O " shape rubber seal.The common manufacturing method of this sealing ring part outputs metal die by part digital-to-analogue shape, and on press, sulfuration forms.Because sealing ring actual cross-section is long-pending very little, the volume of relative die body, die body utilization rate is extremely low, but the press table top that need use requires and very greatly, cause manufacturing cost high.This invention utilizes the distinctive high resiliency of rubber, becoming abnormity, outputing metal pattern by sealing ring girth being carried out path design, and after compacting depanning, special-shaped rubber loop recovers former " O " shape sealing ring shape.The invention of the moulding technique of this type of rubber part, for the production of large-scale " O " shape and similar large-scale rubber seal from now on provides good reference function.
Summary of the invention
The object of the present invention is to provide a kind of large-scale " O " shape rubber seal moulding technique, large-scale " O " shape rubber seal adopts special-shaped designing mould to suppress, effective lifting mould volume utilization rate, reduces die area, reaches the object of little press compacting large sealing circle.
Present invention employs following technical proposals:
1, path planning
The girth of " O " shape rubber seal is carried out path planning and becomes butterfly shape, and by the measurement function of software, ensure that the theoretical length of former girth and existing girth is completely the same.
2, the finishing at path curvatures angle
Because sealing ring after sulfuration is wanted to revert to circle, therefore all corner regions of butterfly shape can not have little acute angle to exist, and need carry out the finishing at turning, path.
3, frock manufacture and part manufacture
By the press that frock size Selection is suitable, carry out part sulfuration by technological parameter, part depanning after sulfuration, butterfly shape part is slowly launched, put into calibrator and carry out sizing and put.It launches again after producing by part, uses.
The present invention is under little press condition, by the die face of large-scale " O " rubber seal is carried out Rational Path planning, reduce compacting tool set volume, provide a kind of cost low, little process is required to the press range of work, appearance and size requirement can be met, air-tightness requirement can be ensured again; Due to reducing of die face scope, thus reduce the volume of mould, save the material cost of mould; Alleviate the overall weight of mould, convenience when improve carrying and use.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is " O " shape die for rubber seal rings schematic diagram before distortion.
Fig. 3,4 and 5 is the butterfly shape die for rubber seal rings schematic diagram after contraction distortion.
1. lower bolster 2. alignment pin 3. cope match-plate patterns in figure.
Detailed description of the invention
Common large-scale " O " shape rubber seal mould as depicted in figs. 1 and 2.
The present invention overcomes the large problem of mould, adopts following method to manufacture large-scale " O " shape rubber seal.
Concrete implementation step is as follows:
1. determine that press can place mould maximum magnitude;
2. path planning, according to O " girth of shape rubber seal carries out path planning and becomes abnormity, and abnormity refers to non-circular.Here select butterfly shape (as shown in Fig. 3,4 and 5), be followed successively by example, also can select other shapes.
3. turning curvature adjustment, because sealing ring after sulfuration is wanted to revert to circle, therefore all corner regions of butterfly shape can not have little acute angle to exist, and need carry out the finishing at turning, path;
4. mould die cavity is pressed structure manufacture as shown in Fig. 3,4 and 5;
5. sizing material is put into shaping mould lower bolster 1 die cavity;
6. cover cope match-plate pattern 3, locate with alignment pin 2;
7. to heat sulfuration by sizing material technological parameter;
8. sealing ring part is taken out in lower bolster die cavity;
Be placed on locator and launch, complete the manufacture of large-scale " O " rubber seal.Locator can be the groove can placing large-scale " O " rubber seal.
Claims (2)
1. large-scale " O " shape rubber seal moulding technique, is characterized in that step is as follows:
Determine that press can place mould maximum magnitude;
Path planning, according to O " girth of shape rubber seal carries out path planning and becomes abnormity;
Turning curvature adjustment;
Mould die cavity is pressed polymorphic structure manufacture;
Sizing material is put into shaping mould lower bolster die cavity;
Cover cope match-plate pattern, locate with alignment pin;
To heat sulfuration by sizing material technological parameter;
Sealing ring part is taken out in lower bolster die cavity;
Be placed on locator and launch, complete the manufacture of large-scale " O " rubber seal.
2. one according to claim 1 large-scale " O " shape rubber seal moulding technique, is characterized in that, the girth of " O " shape rubber seal is carried out path planning and becomes butterfly shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510792880.5A CN105291320A (en) | 2015-11-18 | 2015-11-18 | Forming process method for large O-shaped rubber sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510792880.5A CN105291320A (en) | 2015-11-18 | 2015-11-18 | Forming process method for large O-shaped rubber sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105291320A true CN105291320A (en) | 2016-02-03 |
Family
ID=55189470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510792880.5A Pending CN105291320A (en) | 2015-11-18 | 2015-11-18 | Forming process method for large O-shaped rubber sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105291320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335201A (en) * | 2016-08-26 | 2017-01-18 | 萍乡市欧凯孚密封件有限公司 | Production process of oil sump sealing strip of generator set |
| CN109834295A (en) * | 2019-01-15 | 2019-06-04 | 江苏科技大学 | A kind of Big Diameter Rubber circle machine-tooled method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201685380U (en) * | 2010-05-06 | 2010-12-29 | 马鞍山宏力橡胶制品有限公司 | Primary sulfuration mould for super-large sized rubber O-shaped seal ring |
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
-
2015
- 2015-11-18 CN CN201510792880.5A patent/CN105291320A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201685380U (en) * | 2010-05-06 | 2010-12-29 | 马鞍山宏力橡胶制品有限公司 | Primary sulfuration mould for super-large sized rubber O-shaped seal ring |
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335201A (en) * | 2016-08-26 | 2017-01-18 | 萍乡市欧凯孚密封件有限公司 | Production process of oil sump sealing strip of generator set |
| CN109834295A (en) * | 2019-01-15 | 2019-06-04 | 江苏科技大学 | A kind of Big Diameter Rubber circle machine-tooled method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |