CN109723820A - A kind of skeleton rubber sealing ring and its production mould - Google Patents
A kind of skeleton rubber sealing ring and its production mould Download PDFInfo
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- CN109723820A CN109723820A CN201910057480.8A CN201910057480A CN109723820A CN 109723820 A CN109723820 A CN 109723820A CN 201910057480 A CN201910057480 A CN 201910057480A CN 109723820 A CN109723820 A CN 109723820A
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- 238000007789 sealing Methods 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 67
- 229910052751 metal Inorganic materials 0.000 claims abstract description 124
- 239000002184 metal Substances 0.000 claims abstract description 124
- 230000007423 decrease Effects 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 9
- 229910000737 Duralumin Inorganic materials 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 17
- 238000005299 abrasion Methods 0.000 description 14
- 239000003292 glue Substances 0.000 description 12
- 238000004073 vulcanization Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000012797 qualification Methods 0.000 description 8
- 238000010068 moulding (rubber) Methods 0.000 description 7
- 238000004132 cross linking Methods 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005486 sulfidation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to sealing ring technical fields, propose a kind of skeleton rubber sealing ring, including endless metal skeleton, endless metal skeleton includes the first rake that internal diameter gradually decreasees from top to bottom, the second vertical portion that internal diameter remains unchanged, the third rake that internal diameter is from top to bottom gradually increased, the first rubber ring is provided on first rake, first rubber ring is tapered sleeve shape, the second rubber ring is provided on endless metal skeleton outer wall, the invention also provides a kind of skeleton rubber sealing ring production moulds, including cope plate, lower template, the first cavity is formed between cope plate and lower template, mold core is provided in first cavity, cope plate, the die cavity for accommodating skeleton rubber sealing ring is formed between lower template and mold core, mold core includes metal cap and lower mold core, metal cap is threadedly coupled with lower mold core.Through the above technical solutions, the present invention solves the problems, such as that skeleton rubber sealing ring leakproofness is poor in the prior art, low efficiency and processing cost are high in production process.
Description
Technical field
The invention belongs to sealing ring technical field, it is related to a kind of skeleton rubber sealing ring and its production mould.
Background technique
Skeleton rubber sealing annular product is widely used in the gas of the braking system of the vehicles such as track train, ship
It suppresses and is sealed at dynamic pipe joint.
China relies on import more before such sealing element.The China Jin Liangnian start using this problem as scientific and technological development project with
Realize production domesticization transition.At present many enterprises, the country and scientific research institution carried out the processing method research of such product up to 2 years with
On, the processing mold of existing skeleton rubber sealing ring includes cope plate, lower template, mold core, when processing, rubber raw materials and skeleton
Becket under the constraint of mold, by vulcanizing press heating plate to mold apply pressure and temperature, rubber in die cavity into
Row vulcanization crosslinking react and realize it is Nian Jie with framework metal ring, after the completion of vulcanization, open mold take out product.Because of framework metal ring
It is limited with the machining accuracy of mold core, reality production will appear two kinds of problems: first is that framework metal ring is interference fitted with mold core and is led
Cause damage mold core, demoulding difficult, second is that gap is excessive between framework metal ring and mold core, so that framework metal ring inner sidewall overflows
Glue, rear fabrication process is difficult, and therefore, difficulty of processing is big, and the skeleton rubber sealing ring that defect rate is high and production capacity is low and traditional exists
Be easy to appear during reuse deformation, not anti-skidding phenomenon and cause leakproofness poor.
Summary of the invention
The present invention proposes a kind of skeleton rubber sealing ring and its production mould, solves skeleton rubber sealing in the prior art
The problem of ring leakproofness difference.
The technical scheme of the present invention is realized as follows:
A kind of skeleton rubber sealing ring, including endless metal skeleton, the endless metal skeleton include internal diameter from top to bottom
Three parts successively changed are followed successively by the first rake, the internal diameter that internal diameter gradually decreasees from top to bottom remain unchanged second
The third rake that vertical portion, internal diameter are from top to bottom gradually increased is provided with the first rubber ring on first rake, described
First rubber ring is tapered sleeve shape, is provided with the second rubber ring on the endless metal skeleton outer wall.
As further technical solution, extension is provided on first rubber ring, the extension encases described
Second vertical portion.
As further technical solution, the upper and lower ends of the endless metal skeleton are provided with chamfering, and described second
Rubber ring coats the chamfering, and the endless metal skeleton further includes the 4th vertical portion that internal diameter remains unchanged, and the described 4th is perpendicular
Straight portion's setting is in third rake lower part, the upper surface of the endless metal skeleton and the bus of first rubber ring
Angle is 95 °~130 °, and the angle of the upper surface of the endless metal skeleton and first rake is 130 °~175 °, institute
The angle of the upper surface of stating endless metal skeleton and the third rake is 60 °~80 °, the third rake and described the
The length ratio of one rake is 3~5:1.
A kind of skeleton rubber sealing ring production mould, including cope plate, lower template, the cope plate and the lower template it
Between form the first cavity, mold core, shape between the cope plate, the lower template and the mold core are provided in first cavity
At the die cavity for accommodating skeleton rubber sealing ring, the mold core includes metal cap and lower mold core, the metal cap and it is described under
Mold core dismantling connection.
As further technical solution, the mold core is cylinder, and the mold core includes that outer diameter from top to bottom successively becomes
Five parts changed, be followed successively by the 6th vertical portion that the 5th rake, the outer diameter that outer diameter is from top to bottom gradually increased remain unchanged,
The 8th vertical portion and the 9th vertical portion that the 7th rake, the outer diameter that outer diameter is from top to bottom gradually increased remain unchanged, it is described
The outer diameter of 8th vertical portion is greater than the outer diameter of the 9th vertical portion, when the mold core works, the 5th rake, described the
The outer wall of six vertical portions is contacted with first rubber ring, and the outer wall of the 7th rake is contacted with endless metal skeleton, institute
The outer wall for stating the 8th vertical portion is contacted with endless metal skeleton part.
As further technical solution, the mold core is magnetic mold core, and the mold core and endless metal skeleton pass through magnetic
Property absorption.
As further technical solution, it is provided with annular groove on the 7th rake, is filled out in the annular groove
Filled with the annular rubber gasket for forming buffering in the mold core and endless metal skeleton contact site, the ring-type rubber
Rubber gasket is contacted with first rubber ring.
As further technical solution, the material of the mold core is duralumin A7075, the material of the endless metal skeleton 1
Matter is hard alloy steel V40.
As further technical solution, one end in the mold core close to the cope plate is provided with the first magnet, institute
State in mold core and one end of the lower template be provided with the second magnet, be provided in the cope plate for make the mold core and
Cope plate third magnet close to each other is provided with for keeping the mold core and the lower template mutual in the lower template
The 4th separate magnet.
As further technical solution, slow pressing spring, the slow pressure are provided between the mold core and the lower template
When spring jacks up the mold core, gap is formed between the mold core and the lower template.
The present invention is using principle and has the beneficial effect that
The production mould structure of skeleton rubber sealing ring of the invention is simple, and design is reasonable, so that sealing in skeleton rubber
In ring production, production efficiency rises above 10 moulds/hour by 6 moulds/hour, and product qualification rate is risen above by 70%
90%, mold core cost, which is shared equally, decreases below 1 yuan/by 4 yuan/, substantially increases skeleton rubber while save the cost
It is easy to efficiently solve mold core in prior art skeleton rubber sealing ring production technology for the production efficiency and product qualification rate of sealing ring
The problem of damage, framework metal ring inner sidewall excessive glue, is suitble to large-scale promotion to use.
In the present invention, when in use, skeleton rubber sealing ring is mounted at air-pressure brake pipe joint, endless metal bone
Frame is played a supporting role, and increases the stability of skeleton rubber seal ring structure, the setting of the first rubber ring and the second rubber ring,
Play the role of double-layer seal, improves the leakproofness of skeleton rubber sealing ring, the first rubber ring is tapered sleeve type, under top is small
Portion is big, practical convenient for skeleton rubber sealing ring to be mounted at air-pressure brake pipe joint.Endless metal skeleton annular gold
Belong to skeleton include internal diameter the first rake, the internal diameter that gradually decrease from top to bottom remain unchanged the second vertical portion, internal diameter is by upper
The third rake being gradually increased under, the inclined-plane of the first rake is arranged so that endless metal skeleton and the first rubber ring connect
Contacting surface product is bigger, in skeleton rubber sealing ring in use, applying active force, the first inclination to endless metal skeleton at pipe joint
The setting in portion, third rake so that endless metal skeleton not only generates the active force of an axial direction to the first rubber ring, but also
The active force of a radial direction is also generated, so that endless metal skeleton is closer in conjunction with the first rubber ring, is guaranteeing sealing work
With while endless metal skeleton and the first rubber ring intersection can be effectively prevent to crack and reduce skeleton rubber sealing ring
Service life, to improve the practicability and service life of skeleton rubber sealing ring.
In the present invention, the extension being arranged on the first rubber ring encases the second vertical portion, to annular gold at pipe joint
When belonging to skeleton application active force, extension can play buffer function, reduce the abrasion of endless metal skeleton, meanwhile, prolong
Long portion encases the second vertical portion, prevents the object being socketed from directly contacting with the second vertical portion, enhances antiskid effect, meanwhile,
First rake and the second vertical portion form obtuse angle, apply axial active force to the first rubber ring, make extension, the first rubber
Circle internal duct joint fits closely, and the sealing effect of skeleton rubber sealing ring is improved, so that it is close to improve skeleton rubber
Service life, skid resistance and the sealing effect of seal ring.
In the present invention, the upper and lower ends of endless metal skeleton are provided with chamfering, increase endless metal skeleton and the second rubber
The contact area of cushion rubber makes the second rubber ring can be good at blocking endless metal skeleton package, so that skeleton rubber seals
Ring better tightness when in use.
In the present invention, in the production of skeleton rubber sealing ring, endless metal skeleton is placed in die cavity and mold core first
Cope plate, lower template are merged, rubber raw materials are injected into die cavity, by vulcanizing press heating plate to bolster by contact
Applying pressure and temperature, rubber carries out vulcanization crosslinking reaction in die cavity and realization is Nian Jie with framework metal ring, after the completion of vulcanization,
Mold is opened, product is taken out, in skeleton rubber sealing ring production process, since vulcanizing press heating plate is to cope plate
Apply pressure, so that leading to mold core upper half in the presence of friction between mold core and cope plate, between mold core and endless metal skeleton
Part is easy to wear, by the way that mold core is divided into two parts, the top half being prone to wear be replaceable metal cap, by with lower die
Core removably connects, and can directly be replaced after metal cap abrasion, replacement cost saved, to save skeleton rubber
The production cost of sealing ring solves mold core quick abrasion when technical staff suffers from the production of skeleton rubber sealing ring and needs replacing cost
High and insurmountable technical problem.
In the present invention, mold core includes the 6 that outer diameter the 5th rake, the outer diameter that are from top to bottom gradually increased remain unchanged
The 8th vertical portion and the 9th that the 7th rake, the outer diameter that vertical portion, outer diameter are from top to bottom gradually increased remain unchanged are vertical
Portion, the setting of outer diameter variation control skeleton so that mold core can be good at sealing ring size with skeleton rubber corresponding convenient for accurate
The skeleton rubber sealing ring product qualification rate of production is increased to greater than 90% by 70%, mentioned significantly by the size of rubber seal ring
The high yield rate of skeleton rubber sealing ring, reduces the excessive glue phenomenon that production process middle skeleton becket inner sidewall occurs.
In the present invention, mold core is magnetic mold core, before rubber curing forming processing, first by endless metal skeleton and mold core
It is grouped together by magnetic absorption, avoids the excessive glue phenomenon occurred in skeleton rubber sealing ring production process, meanwhile, combination
Body and cope plate form closed cavity and are used for rubber moulding, the pressure that lower template transmits mold core are eliminated, to reduce mould
The abrasion of core.
It is frequently the problem that in actual production and is covered when on mold core in endless metal skeleton, can generate touch between the two
It hits and rubs so that mold core is damaged, even if slightly small deformation or abrasion will also result in mold core and endless metal bone
The mismatch of frame, to cause the raising of defect rate, therefore mold core needs to be replaced frequently, in the present embodiment, on mold core with ring
Annular groove is offered on the 7th rake that shape metallic framework directly contacts, and is filled with annular rubber gasket, ring-shaped rubber
Gasket design is to be slightly higher than annular groove, and annular rubber gasket can be very good to reduce and collide, thus very good solution mold core
The problem of upper the 7th rake contacted with endless metal skeleton third rake is subject to impaction lesion, increase annular groove,
After annular rubber gasket design, new problem is encountered in production, is exactly that annular rubber gasket anti-collision effect is difficult to make us full
Meaning, and by constantly improvement, inventor finally by annular rubber gasket be designed as include stretch out annular groove anticollision portion with
For filling in the portion that fills in of annular groove, anticollision portion only slightly raised above, play anti-collision effect, in the first rake and
When the contact fitting of the 7th rake, anticollision portion can be pressed into annular groove, therefore play good anti-collision effect and also not
Rubber can be caused to carry out vulcanization crosslinking inverse time in die cavity the dimensional discrepancy for causing mold core and when annular rubber gasket closes tight
Overflow or offset, and for annular its internal diameter of portion of filling in be gradually increased from top to bottom, for annular its outer diameter of anticollision portion by
Top to bottm is gradually increased, and anticollision portion outer wall, the portion inner wall of filling in are conical-surface type, and taper is different, and the taper in anticollision portion, which is greater than, to be filled in
Portion, and annular groove is identical as portion's structure is filled in, and has a clamp so as to be provided by the bottom surface of annular groove circular cone
The active force at angle can not only realize that anticollision portion provides active force in endless metal skeleton third rake in anticollision portion,
But also being capable of providing active force keeps anticollision portion itself more stable, therefore ensure that the long-time service of annular rubber gasket,
Anticollision portion outer wall dimension is to fill in the one third of portion's inner wall to a quarter, and anticollision portion is smaller, therefore can obtain biggish
Support, anticollision portion outer wall are filled in portion's inner wall upper end both from longitudinal section view and are connected by obtuse angle broken line, and lower end passes through straight line
Connection, thus in available more direction power support, structure is more stable, can achieve good support effect, from
And the very good solution problem of annular rubber gasket anti-collision effect difference to extend the service life of mold core has saved mould
The use cost of core shares mold core cost equally and decreases below 1 yuan/by 4 yuan/, therefore saved skeleton rubber sealing ring
Production cost, improve production efficiency, the production efficiency of skeleton rubber sealing ring risen above 10 by 6 moulds/hour
Mould/hour, the endless metal skeleton for solving metal material causes mold core damage replacement to mold core extruding and bring is at high cost
And the technical problem that production efficiency is low.Annular rubber gasket is contacted with the first rubber ring, and annular rubber gasket and endless metal
Contact is formed between skeleton, is prevented rubber to overflow to the third rake of endless metal skeleton, therefore, is avoided excessive glue phenomenon
Appearance.
In the present invention, the material of mold core is duralumin A7075, and the material of endless metal skeleton is hard alloy steel V40, firmly
The thermal expansion coefficient of aluminium A is 23.6 × 10-6/ DEG C, hard alloy steel V thermal expansion coefficient is 6 × 10-6/ DEG C, the heat of duralumin A is swollen
Swollen coefficient is much larger than hard alloy steel V, and in rubber-heating DEG C vulcanization, both sizes of diameter 22mm thermal expansion difference is
0.07.mm, this difference can be eliminated again when room temperature is cooling when demoulding, it so both can be to avoid the mold core when squeezing beginning and annular gold
Belong to skeleton Caton, and can guarantee that mold core and endless metal skeleton cooperatively form closed cavity and be used for rubber moulding, so as to avoid
When skeleton rubber sealing ring produces due between framework metal ring and mold core gap it is excessive and make framework metal ring inner sidewall excessive glue
The problem of fabrication process difficulty afterwards, while skeleton rubber sealing ring is easy to deviate from from mold core after the completion of the vulcanization of rubber, production effect
Rate is higher.
In the present invention, the setting of the first magnet, the second magnet, third magnet, the 4th magnet, so that mold core and cope plate phase
Suction, mold core and lower template are repelled each other, and cooperatively form rubber mold core in heating sulfidation with cope plate, endless metal skeleton close
Cavity is closed, rubber moulding is used for, convenient for the control of skeleton rubber sealing ring size, improves the qualification rate of product, mold core is under
Template is repelled each other so that during demoulding, mold core is separated with lower template to be more easier, and production efficiency is higher, meanwhile, make mold core with
Cavity is formed between lower template, is reduced the pressure that lower template transmits mold core to reduce the abrasion of mold core and is improved mould
The service life of core.
In the present invention, delay pressing spring and be arranged between mold core and lower template, pressing spring transmitting is delayed when rubber curing forming
Mold core can be jacked up to the power of mold core, make to form gap between mold core and lower template, both guaranteed mold core and endless metal skeleton,
Closed cavity is formed between cope plate and is used for rubber moulding, improves product qualification rate, and be avoided that mold core and endless metal skeleton
It is stuck, reduce the abrasion of mold core, meanwhile, delay pressing spring journey variable, when endless metal skeleton internal diameter changes,
The fit clearance that slow pressing spring can be adapted between mold core and endless metal skeleton by forming adjust automatically, thus it is more practical.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is skeleton rubber seal ring structure schematic diagram of the present invention；
Fig. 2 is skeleton rubber sealing ring production mould of the present invention first cavity structure schematic diagram；
Fig. 3 is one example structure schematic diagram of skeleton rubber sealing ring production mould of the present invention；
Fig. 4 is skeleton rubber sealing ring production mould working state structure schematic diagram of the present invention；
Fig. 5 is the another example structure schematic diagram of skeleton rubber sealing ring production mould of the present invention；
Fig. 6 is annular rubber gasket structural schematic diagram in skeleton rubber sealing ring production mould of the present invention；
Fig. 7 is skeleton rubber sealing ring production mould another embodiment structural schematic diagram of the present invention；
Fig. 8 is skeleton rubber sealing ring production mould of the present invention another embodiment structural schematic diagram again；
In figure: 1- endless metal skeleton, the first rake of 101-, the second vertical portion 102-, 103- third rake, 2-
One rubber ring, the second rubber ring of 3-, 4- extension, 5- chamfering, 6- cope plate, 7- lower template, the first cavity of 8-, 9- mold core,
91- metal cap, 92- lower mold core, the 5th rake of 93-, the 6th vertical portion 94-, the 7th rake of 95-, the 8th vertical portion 96-,
The 9th vertical portion 97-, 10- die cavity, 11- annular groove, 12- annular rubber gasket, 121- anticollision portion, 122- fill in portion, 13-
First magnet, the second magnet of 14-, 15- third magnet, the 4th magnet of 16-, 17- delay pressing spring, the gap 18-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of skeleton rubber sealing ring proposed by the present invention, including endless metal skeleton 1, endless metal bone
Frame 1 includes three parts that internal diameter from top to bottom successively changes, and is followed successively by the first rake that internal diameter gradually decreasees from top to bottom
101, the third rake 103 that internal diameter remains unchanged the second vertical portion 102, internal diameter are from top to bottom gradually increased, the first inclination
The first rubber ring 2 is provided in portion 101, the first rubber ring 2 is tapered sleeve shape, is provided with the second rubber on 1 outer wall of endless metal skeleton
Cushion rubber 3.
In the present embodiment, when in use, skeleton rubber sealing ring is mounted at air-pressure brake pipe joint, endless metal
Skeleton 1 is played a supporting role, and increases the stability of skeleton rubber seal ring structure, the first rubber ring 2 and the second rubber ring 3
Setting, plays the role of double-layer seal, improves the leakproofness of skeleton rubber sealing ring, and the first rubber ring 2 is tapered sleeve type, on
The small lower part in portion is big, practical convenient for skeleton rubber sealing ring to be mounted at air-pressure brake pipe joint.Endless metal skeleton
1 include internal diameter the first rake 101, the internal diameter that gradually decrease from top to bottom remain unchanged the second vertical portion 102, internal diameter is by upper
The inclined-plane of the third rake 103 being gradually increased under, the first rake 101 is arranged so that endless metal skeleton 1 and the first rubber
The contact area of cushion rubber 2 is bigger, in skeleton rubber sealing ring in use, acting at pipe joint the 1 frame application of endless metal bone
Power, the setting of the first rake 101, third rake 103 is so that endless metal skeleton not only generates one to the first rubber ring 2
Axial active force, but also the active force of a radial direction is generated, so that endless metal skeleton 1 was combined with the first rubber ring 2
It is closer, can be effectively prevent while guaranteeing sealing function endless metal skeleton 1 and 2 intersection of the first rubber ring crack and
The service life for reducing skeleton rubber sealing ring, to improve the practicability and service life of skeleton rubber sealing ring.
Further, extension 4 is provided on the first rubber ring 2, extension 4 encases the second vertical portion 102.
In the present embodiment, the extension 4 being arranged on the first rubber ring 2 encases the second vertical portion 102, at pipe joint pair
When endless metal skeleton 1 applies active force, extension 4 can play buffer function, reduce the abrasion of endless metal skeleton,
Meanwhile extension 4 encases the second vertical portion 102, prevents the object being socketed from directly contacting with the second vertical portion 102, enhances
Antiskid effect, meanwhile, the first rake 101 and the second vertical portion 102 form obtuse angle, apply axial work to the first rubber ring 2
Firmly, extension 4,2 internal duct joint of the first rubber ring are fitted closely, the sealing effect of skeleton rubber sealing ring is improved
Fruit, to improve the service life of skeleton rubber sealing ring, skid resistance and sealing effect.
Further, the upper and lower ends of endless metal skeleton 1 are provided with chamfering 5, and the second rubber ring 3 coats chamfering 5, annular
Metallic framework 1 further includes the 4th vertical portion 104 that internal diameter remains unchanged, and the 4th vertical portion 104 is arranged in third rake 103
The angle of the bus of lower part, the upper surface of endless metal skeleton 1 and the first rubber ring 2 is 95 °~130 °, endless metal skeleton 1
Upper surface and the angle of the first rake 101 be 130 °~175 °, the upper surface of endless metal skeleton 1 and third rake
103 angle is 60 °~80 °, and the length ratio of third rake 103 and the first rake 101 is 3~5:1.
In the present embodiment, the upper and lower ends of endless metal skeleton 1 are provided with chamfering 5, increase endless metal skeleton 1 and
The contact area of two rubber rings 3 makes the second rubber ring 3 can be good at blocking the package of endless metal skeleton 1, so that skeleton
Rubber seal ring better tightness when in use.
Embodiment 2
As shown in figs. 2 to 4, a kind of skeleton rubber sealing ring production mould, including cope plate 6, lower template 7, cope plate 6 with
The first cavity 8 is formed between lower template 7, and mold core 9, shape between cope plate 6, lower template 7 and mold core 9 are provided in the first cavity 8
At the die cavity 10 for skeleton rubber sealing ring, mold core 9 includes metal cap 91 and lower mold core 92, and metal cap 91 is torn open with lower mold core 92
Unload connection.
In the present embodiment, skeleton rubber sealing ring production when, first by endless metal skeleton 1 be placed in die cavity 10 with
Mold core 9 contacts, and cope plate 6, lower template 7 are merged, inject rubber raw materials into die cavity 10, passes through vulcanizing press heating plate pair
Bolster applies pressure and temperature, and rubber carries out vulcanization crosslinking reaction in die cavity 10 and realization is Nian Jie with framework metal ring,
After the completion of vulcanization, open mold, take out product, in skeleton rubber sealing ring production process, due to vulcanizing press plus
Hot plate applies pressure to cope plate, so that between mold core 9 and cope plate 6, existing between mold core 9 and endless metal skeleton 1 and rubbing
It wipes and causes 9 top half of mold core easy to wear, by the way that mold core 9 is divided into two parts, the top half being prone to wear is that can replace
Change metal cap 91, be threadedly coupled by lower mold core 92 or dismountable connection such as grafting, after the abrasion of metal cap 91 can directly into
Row replacement, has saved replacement cost, to save the production cost of skeleton rubber sealing ring, has solved technical staff and suffer from bone
Mold core quick abrasion needs replacing technical problem at high cost and insurmountable when frame rubber seal ring produces.
Further, mold core 9 is cylinder, and mold core 9 includes five parts that outer diameter from top to bottom successively changes, and is followed successively by outer
The 6th vertical portion 94 that the 5th rake 93, the outer diameter that diameter is from top to bottom gradually increased remain unchanged, outer diameter are from top to bottom gradually
The 8th vertical portion 96 and the 9th vertical portion 97 that the 7th rake 95, the outer diameter increased remains unchanged, the 8th vertical portion 96
Outer diameter be greater than the 9th vertical portion 97 outer diameter, mold core 9 work when, the 5th rake 93, the 6th vertical portion 94 outer wall and first
Rubber ring 2 contacts, and the outer wall of the 7th rake 95 is contacted with endless metal skeleton 1, outer wall and the annular gold of the 8th vertical portion 96
Belong to the contact of 1 part of skeleton.
In the present embodiment, mold core 9 is remained unchanged including the 5th rake 93, outer diameter that outer diameter is from top to bottom gradually increased
The 8th vertical portion 96 that the 7th rake 95, the outer diameter that 6th vertical portion 94, outer diameter are from top to bottom gradually increased remain unchanged
With the 9th vertical portion 97, the setting of outer diameter variation, so that mold core 9 can be good at the endless metal bone with skeleton rubber sealing ring
Frame 1 and 2 size of the first rubber ring are corresponding, convenient for the size of accurate control skeleton rubber sealing ring, the skeleton rubber of production is close
Seal ring product qualification rate is increased to greater than 90% by 70%, substantially increases the yield rate of skeleton rubber sealing ring, reduces production
The excessive glue phenomenon that framework metal ring inner sidewall occurs in the process.
Embodiment 3
As shown in figure 5, a kind of skeleton rubber sealing ring production mould, all structures including embodiment 2, wherein mold core 9
For magnetic mold core, mold core 9 and endless metal skeleton 1 pass through magnetic absorption.
In the present embodiment, mold core 9 is magnetic mold core, before rubber curing forming processing, first by endless metal skeleton 1 with
Mold core 9 is grouped together by magnetic absorption, avoids the excessive glue phenomenon occurred in skeleton rubber sealing ring production process, together
When, assembly and cope plate 6 form closed cavity and are used for rubber moulding, the pressure that lower template 7 transmits mold core 9 is reduced, from
And reduce the abrasion of mold core 9.
Further, be provided with annular groove 11 on the 7th rake 95, in annular groove 11 filled with for mold core 9 with
1 contact site of endless metal skeleton forms the annular rubber gasket 12 of buffering, and annular rubber gasket 12 connects with the first rubber ring 2
Touching.
It is frequently the problem that in actual production at 1 set of endless metal skeleton when on mold core 9, can be generated between the two
Collision and friction are so that mold core 9 is damaged, even if slightly small deformation or abrasion will also result in mold core 9 and annular gold
The mismatch that belongs to skeleton 1, to cause the raising of defect rate, therefore mold core 9 needs to be replaced frequently, in the present embodiment, mold core
Annular groove 11 is offered on the 7th rake 95 directly contacted on 9 with endless metal skeleton 1, and is filled with ring-shaped rubber pad
Circle 12, annular rubber gasket 12 are designed as slightly higher than annular groove 11, and annular rubber gasket 12 can be very good to reduce and collide, from
And the 7th rake 95 contacted on very good solution mold core 9 with 1 third rake 103 of endless metal skeleton is subject to collide
The problem of damage, encounters new problem in production, is exactly ring after increasing annular groove 11, the design of annular rubber gasket 12
12 anti-collision effect of shape rubber washer be difficult it is satisfactory, and by constantly improvement, inventor is finally by annular rubber gasket 12
It is designed as including stretching out the anticollision portion 121 of annular groove 11 and filling in portion 122, anticollision portion 121 for fill in annular groove 11
Only slightly raised above, play anti-collision effect, the first rake 101 and the 7th rake 95 contact fitting when, anticollision
Portion 121 can be pressed into annular groove 11, therefore play good anti-collision effect and will not be to causing mold core 9 and cyclic annular rubber
Dimensional discrepancy when rubber gasket 12 closes tight causes rubber to carry out the overflow or offset of vulcanization crosslinking inverse time in die cavity 10, and
And its internal diameter of portion 122 of filling in for annular is gradually increased from top to bottom, for annular its outer diameter of anticollision portion 121 from top to bottom gradually
Increase, 121 outer wall of anticollision portion, to fill in 122 inner wall of portion be conical-surface type, and taper is different, and the taper in anticollision portion 121, which is greater than, fills in portion
122, and annular groove 11 is identical as 122 structure of the portion that fills in, so as to provide tool by the bottom surface of 11 circular cone of annular groove
There is the active force of certain angle in anticollision portion 121, therefore can not only realize that anticollision portion 121 provides active force in endless metal
1 third rake 103 of skeleton, but also being capable of providing active force keeps anticollision portion 121 itself more stable, therefore ensure that ring
The long-time service of shape rubber washer 12,121 outer wall dimension of anticollision portion be 122 inner wall of the portion that fills in one third to four/
One, anticollision portion 121 is smaller, therefore can obtain biggish support, and 121 outer wall of anticollision portion fills in 122 inner wall of portion from longitudinal section view
On both see that upper end is connected by obtuse angle broken line, lower end by straight line connection, therefore in available more direction power support,
Structure is more stable, can achieve good support effect, thus very good solution annular rubber gasket 12 anti-collision effect
Difference problem saved the use cost of mold core to extend the service life of mold core 9, make mold core cost share equally by 4 yuan/
It is a to decrease below 1 yuan/, therefore the production cost of skeleton rubber sealing ring has been saved, production efficiency is improved, by skeleton
The production efficiency of rubber seal ring rises above 10 moulds/hour by 6 moulds/hour, solves the endless metal bone of metal material
Frame 1, which squeezes mold core 9, causes the damage of mold core 9 replacement and bring is at high cost and production efficiency is low technical problem.Ring-shaped rubber
Washer 12 is contacted with the first rubber ring 2, and is formed and contacted between annular rubber gasket 12 and endless metal skeleton 1, and rubber is prevented
Glue is overflowed to the third rake 103 of endless metal skeleton 1, therefore, avoids the appearance of excessive glue phenomenon.
Embodiment 4
As shown in figure 4, a kind of skeleton rubber sealing ring production mould, all structures including embodiment 2, wherein mold core 9
Material be duralumin A7075, the material of the endless metal skeleton 1 is hard alloy steel V40.
In the present embodiment, the material of mold core 9 is duralumin A7075, and the material of endless metal skeleton 1 is hard alloy steel V40,
The thermal expansion coefficient of duralumin A7075 is 23.6 × 10-6/ DEG C, hard alloy steel V40 thermal expansion coefficient is 6 × 10-6/ DEG C, duralumin
The thermal expansion coefficient of A7075 is much larger than hard alloy steel V40, both sizes of diameter 22mm in 180 DEG C of rubber-heating vulcanizations
Thermal expansion difference is 0.07mm, can eliminate this difference again when room temperature is cooling when demoulding, so both can be to avoid when having squeezed beginning
Mold core 9 and 1 Caton of endless metal skeleton, and can guarantee that mold core 9 and endless metal skeleton 1 cooperatively form closed cavity for rubber
Glue moulding, so as to avoid when the production of skeleton rubber sealing ring due between framework metal ring and mold core gap it is excessive and make skeleton
The problem of fabrication process difficulty after becket inner sidewall excessive glue, while skeleton rubber sealing ring is easy from mould after the completion of the vulcanization of rubber
Deviate from core, production efficiency is higher.
Embodiment 5
As shown in fig. 6, a kind of skeleton rubber sealing ring production mould, all structures including embodiment 2, further include, institute
It states one end in mold core 9 close to the cope plate 6 and is provided with the first magnet 13, the close lower template 6 in the mold core 9
One end is provided with the second magnet 14, is provided in the cope plate 6 for keeping the mold core 9 and the cope plate 6 close to each other
Third magnet 15, the 4th magnetic for being located remotely from each other the mold core 9 and the lower template 7 is provided in the lower template 7
Iron 16.
In the present embodiment, the setting of the first magnet 13, the second magnet 14, third magnet 15, the 4th magnet 16, so that mold core
9 with cope plate 6 is close to each other, mold core 9 is located remotely from each other with lower template 7, make rubber mold core 9 and cope plate in heating sulfidation
6, endless metal skeleton 1 cooperatively forms closed cavity, is used for rubber moulding, convenient for the control of skeleton rubber sealing ring size, mentions
The high qualification rate of product, mold core 9 repel each other with lower template 7, so that during demoulding, mold core 9 is separated with lower template 7 more to be held
Easily, production efficiency is higher, meanwhile, make to form cavity between mold core 9 and lower template 7, eliminates what lower template 7 transmitted mold core 9
Pressure improves the service life of mold core 9 to reduce the abrasion of mold core 9.
Embodiment 6
As shown in fig. 6, a kind of skeleton rubber sealing ring production mould, all structures including embodiment 2, further include mould
Slow pressing spring 17 is provided between core 9 and lower template 7, when delaying pressing spring 17 for the jack-up of mold core 9, shape between mold core 9 and lower template 7
At gap 18.
In the present embodiment, delay pressing spring 17 and be arranged between mold core 9 and lower template 7, pressure bullet is delayed when rubber curing forming
The power that spring 17 passes to mold core 9 can jack up mold core 9, make to form gap between mold core 9 and lower template, both guaranteed mold core 9 with
Closed cavity is formed between endless metal skeleton 1, cope plate 6 and is used for rubber moulding, improves product qualification rate, and be avoided that mold core
9 is stuck with endless metal skeleton 1, reduces the abrasion of mold core 9, meanwhile, delay 17 journey variable of pressing spring, when endless metal bone
When 1 internal diameter of frame changes, slow pressing spring 17 can by formed adjust automatically be adapted to mold core 9 and endless metal skeleton 1 it
Between fit clearance, therefore it is more practical.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of skeleton rubber sealing ring, which is characterized in that including endless metal skeleton (1), endless metal skeleton (1) packet
Include three parts that internal diameter from top to bottom successively changes, be followed successively by the first rake (101) that internal diameter gradually decreasees from top to bottom,
The third rake (103) that the second vertical portion (102) that internal diameter remains unchanged, internal diameter are from top to bottom gradually increased, described first
It is provided on rake (101) the first rubber ring (2), first rubber ring (2) is tapered sleeve shape, the endless metal skeleton
(1) the second rubber ring (3) are provided on outer wall.
2. a kind of skeleton rubber sealing ring according to claim 1, which is characterized in that set on first rubber ring (2)
It is equipped with extension (4), the extension (4) encases second vertical portion (102).
3. a kind of skeleton rubber sealing ring according to claim 1, which is characterized in that the endless metal skeleton (1)
Upper and lower ends are provided with chamfering (5), and second rubber ring (3) coats the chamfering (5), the endless metal skeleton (1)
It further include the 4th vertical portion (104) that internal diameter remains unchanged, the 4th vertical portion (104) is arranged in the third rake
(103) lower part, the angle of the bus of the upper surface of the endless metal skeleton (1) and first rubber ring (2) is 95 °~
130 °, the upper surface of the endless metal skeleton (1) and the angle of first rake (101) are 130 °~175 °, described
The angle of the upper surface of endless metal skeleton (1) and the third rake (103) is 60 °~80 °, the third rake
It (103) is 3~5:1 with the length ratio of first rake (101).
4. a kind of skeleton rubber sealing ring production mould, which is characterized in that including cope plate (6), lower template (7), the upper mold
Formed between plate (6) and the lower template (7) the first cavity (8), be provided with mold core (9) in first cavity (8), it is described on
It is formed between template (6), the lower template (7) and the mold core (9) for accommodating bone described in claims 1 to 3 any one
The die cavity (10) of frame rubber seal ring, the mold core (9) include metal cap (91) and lower mold core (92), the metal cap (91) with
Lower mold core (92) dismantling connection.
5. a kind of skeleton rubber sealing ring production mould according to claim 4, which is characterized in that the mold core (9) is
Cylinder, the mold core (9) include five parts that outer diameter from top to bottom successively changes, and are followed successively by outer diameter and from top to bottom gradually increase
What the 6th vertical portion (94) that big the 5th rake (93), outer diameter remain unchanged, outer diameter were from top to bottom gradually increased the 7th inclines
The 8th vertical portion (96) and the 9th vertical portion (97) that inclined portion (95), outer diameter remain unchanged, the 8th vertical portion (96)
Outer diameter is greater than the outer diameter of the 9th vertical portion (97), when the mold core (9) works, the 5th rake (93), described the
The outer wall of six vertical portions (94) is contacted with first rubber ring (2), the outer wall and endless metal of the 7th rake (95)
Skeleton (1) contact, the outer wall of the 8th vertical portion (96) are contacted with endless metal skeleton (1) part.
6. a kind of skeleton rubber sealing ring production mould according to claim 5, which is characterized in that the mold core (9) is
Magnetic mold core, the mold core (9) and endless metal skeleton (1) pass through magnetic absorption.
7. a kind of skeleton rubber sealing ring production mould according to claim 6, which is characterized in that the 7th rake
(95) it is provided on annular groove (11), filled in the mold core (9) and the annular in the annular groove (11)
Metallic framework (1) contact site forms the annular rubber gasket (12) of buffering, the annular rubber gasket (12) and described first
Rubber ring (2) contact.
8. a kind of skeleton rubber sealing ring production mould according to claim 5, which is characterized in that the mold core (9)
Material is duralumin A7075, and the material of the endless metal skeleton (1) is hard alloy steel V40.
9. a kind of skeleton rubber sealing ring production mould according to claim 5, which is characterized in that in the mold core (9)
One end close to the cope plate (6) is provided with the first magnet (13), close to the one of the lower template (6) in the mold core (9)
End is provided with the second magnet (14), is provided in the cope plate (6) for making the mold core (9) and the cope plate (6) phase
Mutually close third magnet (15), the lower template (7) is interior to be provided with for making the mold core (9) and the lower template (7) phase
Mutually the 4th separate magnet (16).
10. a kind of skeleton rubber sealing ring production mould according to claim 5, which is characterized in that the mold core (9) and
It is provided with slow pressing spring (17) between the lower template (7), it is described when the slow pressing spring (17) jacks up the mold core (9)
Gap (18) are formed between mold core (9) and the lower template (7).
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| CN114103000A (en) * | 2020-08-28 | 2022-03-01 | 中兴通讯股份有限公司 | Mold and control method thereof |
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|---|---|
| CN109723820B (en) | 2024-03-29 |
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