CN107650304A - A kind of precise forming mold of major diameter O-ring - Google Patents
A kind of precise forming mold of major diameter O-ring Download PDFInfo
- Publication number
- CN107650304A CN107650304A CN201710942646.5A CN201710942646A CN107650304A CN 107650304 A CN107650304 A CN 107650304A CN 201710942646 A CN201710942646 A CN 201710942646A CN 107650304 A CN107650304 A CN 107650304A
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- China
- Prior art keywords
- cavity
- template
- major diameter
- quick change
- forming mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 241000237858 Gastropoda Species 0.000 claims abstract description 16
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005187 foaming Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/306—Exchangeable mould parts, e.g. cassette moulds, mould inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Abstract
The present invention relates to a kind of precise forming mold of major diameter O-ring, including the first template and the second template, first template includes stencil body and Quick change module, Quick change module is arranged in stencil body cavity, and the cavity of stencil body and the cavity of Quick change module cooperatively form the first cavity of snail shape；Second template includes stencil body and Quick change module, and Quick change module is arranged in stencil body cavity, and the cavity of stencil body and the cavity of Quick change module cooperatively form the second cavity of snail shape；The surface of first template and the second template, which is bonded to each other, makes the first cavity and the second cavity cooperatively form spiral helicine die cavity；First template and the second template are provided with cooling system, and cooling system includes air intake valve, air inlet pipe, cooling air cavity module, escape pipe and blow gun.The spiral tangent mold cavity of the present invention, the making of major diameter O-ring can be completed using small mould so that die cost is reduced, and production efficiency is improved.
Description
Technical field
The invention belongs to rubber mold field, and in particular to a kind of precise forming mold of major diameter O-ring.
Background technology
Major diameter O-ring is often referred to O-ring of the diameter more than more than 500mm, and the O-ring is widely used in space division row
Industry, semicon industry, sewage disposal, large-scale power station, pipeline, ball valve, pressure vessel, the reactor of petrochemical industry and natural gas
In.The molding of O-ring generally use or injection technique manufacture for stock size, but for O of the diameter more than more than 500mm
Type circle, is limited by former and mould, as shown in Figure 1 and Figure 2, can only use the vulcanizing press of some customizations
And the mould of special construction manufactures, because such die structure size is huge, it usually needs chill lifting could realize life
Production, wastes time and energy.In addition, such a mode all needs supporting one secondary large mold for the O-ring of each specification, and single specification
The demand of O-ring is again little, therefore the die cost accounting of single O-ring is very high, adds the manufacturing cost of mould.Most
Afterwards, due to need chill produce or segmented production, production efficiency is extremely low, using current specification asMajor diameter O-ring
Exemplified by, per every class, production is only 25 meters.
The content of the invention
It is an object of the invention to solve, the die cost of existing major diameter O-ring is too high and major diameter O-ring produces
The problem of efficiency is low, and a kind of precise forming mold of major diameter O-ring is provided.
The technical scheme is that：
A kind of precise forming mold of major diameter O-ring, including the first template and the second template, first template include
Stencil body and at least one Quick change module, the Quick change module are arranged on inside stencil body, the cavity of stencil body and fast
The cavity of mold changing block cooperatively forms the first cavity of snail shape；Second template includes stencil body and at least one fast
Block is changed the mold, the Quick change module is arranged on inside stencil body, and the cavity of stencil body and the cavity of Quick change module cooperatively form
Second cavity of snail shape；The surface of first template and the second template, which is bonded to each other, coordinates the first cavity and the second cavity
Form spiral helicine die cavity；First template and the second template are provided with least a set of cooling system, and the cooling system includes
Air intake valve, air inlet pipe, cooling air cavity module, escape pipe and blow gun；The air intake valve is arranged at the air inlet of air inlet pipe,
The air inlet pipe is arranged on inside the second template, and cooling air cavity module is arranged at raw material head, and the blow gun is arranged on escape pipe
Gas outlet at, the escape pipe is arranged on inside the first template, and the gas outlet of air inlet pipe is by cooling down the cavity of air cavity module
Connected with the air inlet of escape pipe.
Further, it is L to form the snail curve of helical form die cavity by distance of center circle difference, and radial difference is followed successively by L
The tangent formation of multiple semicircles, wherein L be one be more than zero length value.Semidiameter is that L each semicircle is tangent so that half
Footpath difference L die cavity is tangent at the semicircle that eccentric throw is L mm, so as to realize seamlessly transitting for different-diameter semicircle junction,
It ensure that the requirement and appearance requirement of O-ring.
Further, the least radius of the snail curve is 150mm, and the O-ring that least radius is 150mm is certainly
It is generally flat under right state, meet the follow-up requirement for being fused into major diameter O-ring.
Further, the snail curve is 25mm by distance of center circle difference, and radial difference is followed successively by the multiple of 25mm
The tangent formation of semicircle.
Further, multiple locating dowels are provided with the second template, are provided with what is be engaged with locating dowel in the first template
Multiple positioning holes.
Further, the vertical loading board for carrying is provided with the first template and the second template.
Further, the cross section of the first cavity and the second cavity vertically is semicircle.
Further, first template includes two Quick change modules, and second template includes two Quick change modules, soon
Block is changed the mold to be arranged on stencil body by mould unloading screw.
Further, the air inlet pipe and escape pipe are by made of resistant to elevated temperatures polytetrafluoroethylene (PTFE).
Further, the quantity of the cooling system is three sets.
Advantages of the present invention is：
1. the present invention uses spiral tangent mold cavity, the system of major diameter O-ring can be completed using small mould
Make so that the die cost of major diameter O-ring reduces, and contrasts Integratively formed mould and step up cure shaping in current industry
Mould, more than 10 times of the improving productivity of inventive die, per tour can produce 300 meters of major diameter O-ring.
2. the present invention uses special spiral mould die cavity, seamlessly transitting for different-diameter semicircle junction is realized, is ensured
The requirement and appearance requirement of O-ring, semidiameter are that L each semicircle is tangent so that radius difference L die cavity is in bias
Away from tangent at the semicircle for L mm, so as to realize smoothly transitting for different radii O-ring.
, in process of production, can be easily by mould 3. the Quick change module that the present invention is set improves the flexibility of mould
The Quick change module of tool is dismounted, and so as to produce the O-ring of different length according to customer demand, possesses single mould
The ability of plurality of specifications major diameter O-ring is produced, meets length requirement of the different clients to major diameter O-ring,
4. the present invention uses mould Local Contraction cooling air mode.Air inlet pipe and outlet are fabricated to polytetrafluoroethylene (PTFE)
Pipe, compressed air is blown into the cavity of raw material head, by adjusting air inflow, ensures that empty cavity temperature below 50 °, solves well
Mould inside raw material head determined mould inside cures foaming the problem of, has improved the quality of O-ring.
5. present invention determine that the minimum shaping radius of major diameter O-ring precise forming mold are 150mm, mould production
O-ring out is not only realized in two different radii the tangent and seamlessly transitted, and the O-ring that radius is 150mm is certainly
It is generally flat under right state, meet the follow-up requirement for being fused into major diameter O-ring.
Brief description of the drawings
Fig. 1 is the structure chart of existing large-scale one-time-shaped mould；
Fig. 2 is the structure chart of existing step up cure mould；
Fig. 3 is the structure chart of mould of the embodiment of the present invention；
Fig. 4 is the structure chart of the first template of the invention；
Fig. 5 is the structure chart of the second template of the invention；
Fig. 6 is the profile of cooling system of the present invention；
Fig. 7 is the structure chart of Quick change module of the present invention；
Fig. 8 is the schematic diagram of snail curve of the present invention.
Reference：The templates of 1- first, the templates of 2- second, 3- stencil bodies, 4- Quick change modules, the cavitys of 5- first, 6-
Two cavitys, 7- locating dowels, 8- positioning holes, 9- mould unloading screws, 10- vertical loading boards, 12- air intake valves, 13- air inlet pipe, 14- cooling gas
Chamber module, 15- escape pipes, 16-L type blow guns.
Embodiment
Technical scheme is clearly and completely described with reference to Figure of description.
The precise forming mold of major diameter O-ring as shown in FIG. 3 to 7, including the first template 1 and the second template 2, first
Template 1 includes stencil body 3 and two Quick change modules 4, and Quick change module 4 is arranged on template by mould unloading screw 9 and shop bolt
Inside body 3, the cavity of stencil body 3 and the cavity of Quick change module 4 cooperatively form the first cavity 5, and the first cavity 5 is in plane spiral shell
Revolve shape；Second template 2 includes stencil body 3 and two Quick change modules 4, and Quick change module 4 is pacified by mould unloading screw 9 and shop bolt
Inside stencil body 3, the cavity of stencil body 3 and the cavity of Quick change module 4 cooperatively form the second cavity 6, the second cavity 6
In snail shape；The cross section of first cavity 5 and the second cavity 6 is semicircle；First template 1 and the second template 2 are in liquid
The first cavity 5 and the second cavity 6 is set to form closed die cavity in the presence of press, die cavity in the shape of a spiral, forms helical form die cavity
Snail curve is L by distance of center circle difference, and radial difference is followed successively by the L tangent formation of multiple semicircles；First template 1 is provided with
Multiple locating dowels 7, the second template 2 are provided with the multiple positioning holes 8 being engaged with locating dowel 7, pass through the positioning hole 8 and locating dowel
7 cooperation, realize being accurately positioned for the first template 1 and the second template 2；It is equipped with first template 1 and the second template 2 and is used to carry
Vertical loading board 10, facilitate mould hangs assembly and disassembly.
As shown in figure 8, the present invention uses special spiral mould die cavity, snail curve is L=by distance of center circle difference
25mm, radial difference (R2-R1) is L=25mm semicircle tangent formation successively, so as to realize the smooth mistake of different radii O-ring
Cross.The tangent spiral shape mold cavity of semicircle provided by the invention improves the utilization rate of single mould, realizes small mould molding
The effect of major diameter O-ring, the arrangement can not only improve the utilization rate of mould, and because semidiameter is L each half
Circle is tangent successively, seamlessly transitting for different-diameter semicircle junction is realized, so that O-ring outward appearance reaches good effect.
In actual production, by length × wide=600mm × 600mm mould it is plastic go out maximum gauge be 1.424 meters, maximum perimeter be
4.473 meters of O-ring, solves the problem of small size mould molding major diameter O-ring.
Rational minimum shaping radius are the key factors of major diameter O-ring mould molding technology, if minimum shaping
Radius is too small, and waveform will occurs in the major diameter O-ring to form out, can not meet outward appearance and seal request.According to trial-production
Experiment mould, present invention determine that minimum shaping radius are 150mm, the O-ring that the mould is produced is not only in two differences
Radius the tangent, which realizes, to be seamlessly transitted, and the O-ring that radius is 150mm is generally flat in its natural state, is met follow-up
It is fused into the requirement of major diameter O-ring.
Another key factor of qualified major diameter O-ring is produced, seeks to ensure the raw material in spiral shape termination
Head can not be cured foaming in shaping, if curing foaming, next procedure (being fused into major diameter O-ring) progress two is expected
During the fusion of head, because the material head of spiral shape termination cures, the two will not be merged well, and O-ring is in the joint
Intensity, outward appearance etc. will be unable to meet to require.In order to solve this problem, at least one is provided with the first template 1 and the second template 2
Cooling system is covered, cooling system includes air intake valve 12, air inlet pipe 13, cooling air cavity module 14, escape pipe 15 and L-type blow gun
16；Air intake valve 12 is arranged at the air inlet of air inlet pipe 13, and air inlet pipe 13 is arranged on inside the second template 2, cools down air cavity mould
Block 14 is arranged at raw material head, and the gas outlet of air inlet pipe 13 connects with cooling down the cavity of air cavity module 14；L-type blow gun 16 is arranged on
At the gas outlet of escape pipe 15, escape pipe 15 is arranged on inside the first template 1, and the gas outlet of air inlet pipe 13 is by cooling down air cavity mould
The cavity of block 14 connects with the air inlet of escape pipe 15.By air inlet pipe 13, compressed air is directly blown onto mould inside spiral
On the raw material head of head, it ensure that material head does not cure foaming well；Simultaneously as air inlet pipe 13 and escape pipe 15 are from mould type
Chamber nearby passes through, and to avoid the temperature around air inlet pipe 13 and the interior air-flow of escape pipe 15 reduction die cavity, we have selected polytetrafluoro
Ethene (PTFE) makes air inlet pipe 13 and escape pipe 15, and the material is not only resistant to 260 ° of high temperature, and has certain thermal insulation
Effect.Compressed air is blown into the cavity of raw material head by air inlet pipe 13, by adjusting air intake valve 12, ensures that empty cavity temperature exists
Less than 50 °, solve the problems, such as that mould inside raw material head cures foaming in cavity well.Air inlet pipe 13 is arranged on second
In template 2, escape pipe 15 is arranged in the first template 1, air inflow is adjusted by the knob of rotating inlet valve 12, so as to reach
To reduce temperature in cooling air cavity module 14, the raw material head for ensuring to cool down inside air cavity module 14 will not cure the mesh of foaming
's；In addition, the gas out of cooling air cavity out is directly blown by L-type blow gun 16 on the raw material head outside mould, while also reach
Having arrived reduces the effect of this section of material head surface temperature.The precise forming mold of the present invention can be molded the big straight of three kinds of length respectively
Footpath O-ring, so carrying three sets of independent cooling systems on mould, three sets of systems are non-interference, and section components can be mutual
It is general.
The present invention uses modular construction, and the soket head cap screw of three M8 × 40 is used on each Quick change module as top
Silk, after trip bolt is disassembled, tightens the screw, you can disassemble module from template.So as to realize Quick change module
Quick change, improve the flexibility of mould, the ability for making single mould possess production plurality of specifications major diameter O-ring, meet client
Different inner diameters O-ring demand (700~Φ of Φ 1500).
Claims (10)
- A kind of 1. precise forming mold of major diameter O-ring, it is characterised in that：Including the first template and the second template,First template includes stencil body and at least one Quick change module, and the Quick change module is arranged in stencil body Portion, the cavity of stencil body and the cavity of Quick change module cooperatively form the first cavity of snail shape；Second template includes stencil body and at least one Quick change module, and the Quick change module is arranged in stencil body Portion, the cavity of stencil body and the cavity of Quick change module cooperatively form the second cavity of snail shape；The surface of first template and the second template be bonded to each other make the first cavity and the second cavity cooperatively form it is spiral helicine Die cavity；First template and the second template are provided with least a set of cooling system, and the cooling system includes air intake valve, air inlet Pipe, cooling air cavity module, escape pipe and blow gun；The air intake valve is arranged at the air inlet of air inlet pipe, and the air inlet pipe is set Put inside the second template, cooling air cavity module is arranged at raw material head, and the blow gun is arranged at the gas outlet of escape pipe, institute State escape pipe to be arranged on inside the first template, the gas outlet of air inlet pipe is by cooling down the air inlet of the cavity and escape pipe of air cavity module Mouth connection.
- 2. the precise forming mold of major diameter O-ring according to claim 1, it is characterised in that：Form helical form die cavity Snail curve by distance of center circle difference be L, radial difference is followed successively by the L tangent formation of multiple semicircles, and wherein L is one big In zero length value.
- 3. the precise forming mold of major diameter O-ring according to claim 2, it is characterised in that：The snail is bent The least radius of line is 150mm.
- 4. the precise forming mold of the major diameter O-ring according to Claims 2 or 3, it is characterised in that：The snail Curve is 25mm by distance of center circle difference, and radial difference is followed successively by the 25mm tangent formation of multiple semicircles.
- 5. the precise forming mold of major diameter O-ring according to claim 4, it is characterised in that：In second template Multiple locating dowels are provided with, the multiple positioning holes being engaged with locating dowel are provided with the first template.
- 6. the precise forming mold of major diameter O-ring according to claim 5, it is characterised in that：First template and Second template is provided with the vertical loading board for carrying.
- 7. the precise forming mold of major diameter O-ring according to claim 6, it is characterised in that：First cavity and The cross section of second cavity is semicircle.
- 8. the precise forming mold of major diameter O-ring according to claim 7, it is characterised in that：The first template bag Two Quick change modules are included, second template includes two Quick change modules, and Quick change module is arranged on template sheet by mould unloading screw On body.
- 9. the precise forming mold of major diameter O-ring according to claim 8, it is characterised in that：The air inlet pipe and go out Tracheae is by made of resistant to elevated temperatures polytetrafluoroethylene (PTFE).
- 10. the precise forming mold of major diameter O-ring according to claim 9, it is characterised in that：The cooling system Quantity is three sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942646.5A CN107650304A (en) | 2017-10-11 | 2017-10-11 | A kind of precise forming mold of major diameter O-ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942646.5A CN107650304A (en) | 2017-10-11 | 2017-10-11 | A kind of precise forming mold of major diameter O-ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107650304A true CN107650304A (en) | 2018-02-02 |
Family
ID=61116555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710942646.5A Pending CN107650304A (en) | 2017-10-11 | 2017-10-11 | A kind of precise forming mold of major diameter O-ring |
Country Status (1)
| Country | Link |
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| CN (1) | CN107650304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774540A (en) * | 2019-11-28 | 2020-02-11 | 玉环汽车配件实业有限公司 | Injection mold of self-adaptation jump ring position circle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774540A (en) * | 2019-11-28 | 2020-02-11 | 玉环汽车配件实业有限公司 | Injection mold of self-adaptation jump ring position circle |
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