CN109049491A - A kind of capsule component and its molding die and forming method for servo mechanism spheric accumulator - Google Patents
A kind of capsule component and its molding die and forming method for servo mechanism spheric accumulator Download PDFInfo
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- CN109049491A CN109049491A CN201810997543.3A CN201810997543A CN109049491A CN 109049491 A CN109049491 A CN 109049491A CN 201810997543 A CN201810997543 A CN 201810997543A CN 109049491 A CN109049491 A CN 109049491A
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- 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
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3097—Cosmonautical vehicles; Rockets
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Abstract
The present invention relates to a kind of capsule component for servo mechanism spheric accumulator and its molding dies and forming method, belong to servo mechanism accumulator technical field.The present invention devises the ball-type capsule component of special construction for servo mechanism spheric accumulator, that is ball-type metal to rubber capsule component (ball-type capsule, spring wrap steel wire) design structure, ball-type capsule component is made of ball-type capsule, metallic framework and spring wrap steel wire, the ball-type capsule component is used for servo mechanism spheric accumulator, have many advantages, such as that vent flow is big, starting is rapid, light weight, high reliablity, the primary inflation dwell time is long and the service life is long.
Description
Technical field
The present invention relates to a kind of capsule component for servo mechanism spheric accumulator and its molding die and forming method,
Belong to servo mechanism accumulator technical field, it is predominantly a kind of to be applied to carrying space and weapon servo mechanism ball-type accumulator use
The structure-design technique and material molding technology of ball-type capsule combination mold；Including servo mechanism ball-type accumulator ball-type capsule
Forming die structure designing technique, product material molding technology, the selection of mould material material, determining and processing technique.
Background technique
Carrying space and weapon system servo mechanism pressure accumulation period are all made of the structure type of piston accumulator, piston at present
Formula accumulator is due to using ring structure, and the dwell time is short, vent flow is small, drainage is slow, needs constantly to carry out tonifying Qi, furthermore
The bulky of piston accumulator, weight are big, and the miniaturization and lightness for being unfavorable for existing carrying space and weapon system are set
Meter, and dwell pressure is low, is easy leakage.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of for servo mechanism spherical shape storage
The capsule component and its molding die and forming method of depressor, the capsule component are used for servo mechanism spheric accumulator, have and let out
Flow is big, starting is rapid, light weight, high reliablity, primary to inflate the advantages that dwell time is long and the service life is long.
The technical solution of the invention is as follows:
A kind of capsule component for servo mechanism spheric accumulator, including ball-type capsule, metallic framework and steel wire, wherein
Ball-type capsule be spherical structure open at one end, the top of the spherical structure be provided with match with metal framework structure it is recessed
Slot, metallic framework are embedded in the groove and are fitted close with groove, are provided with convex annular on the interior rib wall of the ball-type capsule
It rises, after ball-type capsule is packed into the spherical cavity of servo mechanism accumulator, by steel wire winding on the interior rib wall of ball-type capsule；
The ball-type capsule is rubber material.
In the above-mentioned capsule component for servo mechanism spheric accumulator, the wall thickness on position to top among ball-type capsule
It is gradually reduced, the wall thickness at intermediate position to open end is uniform wall thickness；
In the above-mentioned capsule component for servo mechanism spheric accumulator, the wall thickness on position to top among ball-type capsule
2mm is uniformly decreased to by 2.5mm；The wall thickness of the intermediate position to open end is 3-5mm；
In the above-mentioned capsule component for servo mechanism spheric accumulator, plane where annular protrusion crosses ball-type capsule
The centre of sphere；
In the above-mentioned capsule component for servo mechanism spheric accumulator, the rubber material of ball-type capsule is chloropharin rubber
Glue, nitrile rubber or butyl rubber；
In the above-mentioned capsule component for servo mechanism spheric accumulator, metallic framework is dumbbell shape, metallic framework
Top be provided with fabrication hole, for fixing；
In the above-mentioned capsule component for servo mechanism spheric accumulator, steel wire winding is on the interior rib wall of ball-type capsule
3~5 circles；
In the above-mentioned capsule component for servo mechanism spheric accumulator, metallic framework is embedded in the recessed of ball-type capsule top
It is fitted close in slot and by bonded adhesives and groove, being integrally formed structure, the metallic framework is stainless steel material preparation；
In the above-mentioned capsule component for servo mechanism spheric accumulator, metallic framework is embedded in the recessed of ball-type capsule top
It is bonded in groove in slot and by Kai Muluoke 250.
In the above-mentioned capsule component for servo mechanism spheric accumulator, the material of steel wire is carbon steel material, steel wire
Both ends are red copper material；
A kind of molding die of the capsule component for servo mechanism spheric accumulator, the molding die include molding yin
Mould, molding formpiston, stem, screw plug wire and moulding lid；Shaping female mold includes lower template, middle mould and upper mold；
The stem includes circular cone and following cylinder above, and tapered segment has a side opening, and stem center has
The diameter of through-hole, cone tip is small, and the diameter of circular cone bottom end is big, and the diameter of cylinder is less than the diameter of circular cone bottom end；Tapered segment
Side opening be used for during injecting glue be vented use；
With fluted in the lower template, the column part of stem is embedded into the groove of lower template, and the circle of stem
The groove of post part and lower template matches and to be interference fitted；
The screw plug wire includes the circular cone and lower sections of cylinder of the small column of upper part, middle section, on
The small column of face part is connected with lower sections of cylinder by the conical transition of middle section；Lower sections of cylinder is with outer
Screw thread；Screw plug wire is located above stem；
The molding formpiston i.e. core, there is hollow-out part in core, hollow-out part a part with internal screw thread with
Screw plug wire matches, and another part of hollow-out part and the tapered segment of stem match；
The part more than ball-type capsule centre of sphere is upper mold；
The top of upper mold has glue injection cavities, and the bottom dead center position (namely forming the top of formpiston) of upper mold is provided with screw
Through-hole, screwing through hole are respectively provided with an injecting glue through-hole for installing metallic framework, the two sides of screwing through hole, and the injecting glue through-hole of two sides is logical
Hole is used for injecting glue；
The moulding lid is used to compress glue when injecting glue, and glue is made to be flowed into shaping female mold and molding by injecting glue through-hole
Capsule is formed in type face between formpiston.
A kind of the step of forming method of the capsule component for servo mechanism spheric accumulator, this method includes:
(1) middle mould is placed into lower template, stem is installed in lower template, cylinder and the lower template of stem bottom end are
Interference fit connection；
(2) screw plug wire is screwed into core by external screw thread, and the core with screw plug wire is installed to stem
Top；
(3) upper mold is installed to the top of middle mould, so far upper mold, middle mould and lower template form the shaping female mold of capsule；
(4) compound blank is put into the glue injection cavities of upper mold, then applying pressure using moulding lid makes compound blank pass through injecting glue through-hole
It is injected into shaping female mold and forms in the type face between formpiston, after compound blank sulfidization molding, form capsule；
(5) moulding lid is opened, upper mold is removed from lower template, lower template, stem are separated with middle mould, then middle mould is taken
Under, finally screw plug wire is removed out of core；
(6) gas nozzle is screwed into step (5) in remainder in the internal screw thread of core, squeezes into air pressure 0.1-0.5MPa,
Ball-type capsule swell and core of blowing off are obtained ball-type capsule subassembly product by air pressure.
Compared with prior art, the present invention has the following advantages:
(1) present invention devises the ball-type capsule component of special construction, i.e. ball-type gold for servo mechanism spheric accumulator
Category-rubber capsule component (ball-type capsule, spring wrap steel wire) design structure, ball-type capsule component is by ball-type capsule, metal bone
Frame and spring wrap steel wire composition, the ball-type capsule component are used for servo mechanism spheric accumulator, have that vent flow is big, starting is fast
Speed, light weight, high reliablity, it is primary to inflate the advantages that dwell time is long and the service life is long；
(2) upper half of ball-type capsule structure of the invention is designed as even transition (by thick to thin) structure type, improves
The stress bending status of capsule structure, extends from structure and improves capsule service life；Lower half is designed as uniform thickness
Degree plays the role of fixed support and auxiliary seal；Ball-type capsule open end sealing structure is essentially flange form static seal, leads to
It crosses and determines seal compression, tighten bolt quantity, specification and assembly moment values, meet that static pressure (8MPa) is gas-tight seal, dynamic pressure
The technical requirement on design of (0~21MPa, 14~21MPa) sealing；
(3) the increased metal structure process conditions of ball-type capsule structure top design of the invention, the perfect glue from structure
The use function of capsule further extends capsule dynamic flexion work service life；
(4) design of rib wall increases spring wrap structure of steel wire in ball-type capsule of the invention, further perfect capsule
Using function, ensure that capsule, freely, the fixed support in lower half is motionless and auxiliary is close for the upper half overturning during dynamic duty
Envelope.A small amount of gas in capsule is further avoided from structure, and oil is penetrated between oral area, capsule lower half outer surface and shell
In and generate " air pocket "；Or a small amount of oil penetrates into oral area into air cavity from opposite direction；
(5) the used metal-CHR adhesive of the present invention is adhesive (Kai Muluoke 250), in carrying space etc.
It is applied for the first time in model, there is very strong specific aim, using effect is good, and former domestic " Lek sodium " gluing generally used is substituted
Agent has also started the precedent that Kai Muluoke series adhesive is widely used in space flight model with this.
(6) present invention is shown using the dynamic and static experiments of sealing performance of capsule testpieces: its capsule is being packed into servo mechanism pressure accumulation
When device, servo mechanism allusion quotation, longevity examination test requirements document and multiple, multiple batches of flight test check requirements are met；For servo mechanism
The capsule component of spheric accumulator can achieve following index:
(7) the present invention relates to a kind of capsule component for servo mechanism spheric accumulator, which includes spherical shape
Capsule, metallic framework and steel wire, wherein ball-type capsule be spherical structure open at one end, the top of the spherical structure be provided with
The groove that metal framework structure matches, metallic framework are embedded in the groove and are fitted close with groove, the ball-type capsule
Interior rib wall on be provided with annular protrusion, when ball-type capsule be packed into servo mechanism accumulator spherical cavity in after, steel wire is twined
It is wound on the interior rib wall of ball-type capsule；The ball-type capsule be rubber material, and ball-type capsule among position to top wall thickness
It is gradually reduced, the wall thickness at intermediate position to open end is uniform wall thickness, which is used for servo mechanism spheric accumulator, tool
There is the advantages that vent flow is big, starting is rapid, light weight, high reliablity, and the primary inflation dwell time is long and the service life is long.Hardness
(shoreA)75±5；Tensile strength >=12MPa；Elongation rate of tensile failure >=250%；Break permanent deformation≤8%.
(8) capsule die of the invention is note, molding composable mold again, and there are many parting surface, contact surface and mating surface, therefore
To ensure that ball-type capsule inside and outside surface quality is able to maintain the length of permanent optimum state and the good use state of mold (corrosion-resistant)
Long property, the consistency of planform cooperation, have carried out " nitrogen treatment " to die surface first to improve hardness, have nitrogenized thickness
Degree: 5mm；Then the hard Lip river polishing treatment of plating has been carried out to the molded housing, the spherome surface that contact with capsule inner and outer surfaces；Due to
Ball-type capsule be " metalwork-rubber " composite construction, for ensure metalwork in sulfidation can completely with ball-type capsule
Adam's apple profile constitutes an entirety, and position design increases port and process screw part among the upper mold glue injection cavities bottom of mold
(M4, long 5mm), preceding first to fix metalwork die-filling；Since capsule is ball shape structure, " oral area abdomen is big ", to ensure
Capsule can the intact abjection from sphere, metal positive ball interior design increase a threaded technique through-hole and metal
Plug wire.This ensures that avoiding having a surplus in glue inflow sphere during injecting glue and when sulfidization molding, and simultaneously can
After the completion of bladder curing, process metal plug wire is unloaded, gas nozzle is accessed, suppresses inflation, after capsule oral area swells, completely will
Capsule is deviate from from metal positive sphere, is blown down.
(9) since ball-type capsule is after being packed into servo mechanism ball-type accumulator, in use process, the upper half is (at parting surface
To top) it is dynamic sealing, lower half is static seal, according to use function, performance and the different size of capsule, is changed by design
Mold Metal formpiston core structure outline, can be processed into different size, use the capsule shaping mold of function；
(10 since the ball-type capsule combination mold is injection pressure, molding die, the time is shorter when injecting glue and when moulding, protect
The pressure time is long and pressure (stress: 20MPa) is very high, to ensure mold long-time under high temperature (155 DEG C, 45min) repeatedly
It uses, without deforming, to influence ball-type capsule structure chamfered shape size, therefore mould material material has mainly selected two
Kind, early period is mainly " No. 45 steel " later period and to use now be " 40Cr " metal material.Ball-type is processed with " No. 45 guiding principles " material
Capsule die, difficulty of processing is high and surface " nitridation " effect is poor, can only quench, quenched (HRC:35~38).Through making for a long time repeatedly
With being easily deformed at rear mold mating surface, parting surface, it is difficult to open mould and the capsule product suppressed after a period of use also
There is small deformation.With the ball-type capsule die then forging easy to process of " 40Cr " metal material processing, " nitridation " effect is good, table
Nitration case can be to 5mm or more after the Nitrizing Treatment of face.It ensure that the qualification rate that ball-type capsule product is produced in enormous quantities for a long time.With
The ball-type capsule die of " 40Cr " metal material processing manufacture meets the needs that the mating long-time of model is produced in enormous quantities, extends
The service life of ball-type capsule die, also reduces processing cost.It is manufactured with above-mentioned ball-type capsule combination mold processing and forming
Ф 95,120 ball-type capsule product coincidence pattern " MF302-017 " of Ф, " 4K17-21A/01-10-10 " technical requirement on design
The Special use function of delivery and weapon model servo mechanism ball-type accumulator is required and finally met with inspection specifications
And performance requirement.
For delivering the processing and manufacturing forming process of the ball-type capsule product of servo mechanism ball-type accumulator, including such as
Lower step:
(1) H-type binary copolymerization chlorohydrin rubber is plasticated, activator is sequentially added after plasticating uniformly, reinforced filling, is prevented
Old agent, it is finally plus composite vulcanizing agent, thin 3-5 times logical；
(2) it beats triangle bag 2-4 times, slice, parks 24 hours；
(3) it is true at 200 tons to be then placed in mold (Fig. 1) by: the 145g that will park sizing material, cylindrical type blank is made, and weigh
Vulcanized in empty vulcanizer, conditions of vulcanization: curing temperature: 155 DEG C；Vulcanization time: 40min；Sulfide stress: 20MPa；It is secondary
Vulcanization time: 3h；Post-cure temperature: 150 DEG C.
For the processing and manufacturing forming process of weapon servo mechanism accumulator ball-type capsule product, including walk as follows
It is rapid:
(1) blend of H-type binary copolymerization chlorohydrin rubber and nitrile rubber is plasticated, after plasticating uniformly, is mixed
Refining, sequentially adds activator, reinforced filling, anti-aging agent later, finally plus composite vulcanizing agent, thin 3-5 times logical；
(2) it beats triangle bag 2-4 times, slice, parks 24 hours；
(3) sizing material will be parked, cylindrical type blank is made, weigh: 145g is then placed in mold in 200 tons of vacuum sulphur
Vulcanized in change machine, conditions of vulcanization: curing temperature: 155 DEG C；Vulcanization time: 45min；Sulfide stress: 20MPa；Post-cure
Time: 3h；Post-cure temperature: 154 DEG C.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of capsule component of the invention；
Fig. 2 is spheric accumulator capsule allusion quotation of the present invention, longevity pilot system schematic diagram；
Fig. 3 is that schematic diagram is magnified in ball-type capsule inflation in capsule component of the present invention；
Fig. 4 is capsule component high intensity pressure maintaining pilot system figure of the present invention；
Fig. 5 is structure of steel wire schematic diagram in capsule component of the present invention；
Fig. 6 is assembling schematic diagram of the ball-type capsule of the present invention in servo mechanism spheric accumulator；
Fig. 7 is to suppress oil condition schematic diagram 1 in ball-type capsule assembling process of the present invention；
Fig. 8 is to suppress oil condition schematic diagram 2 in ball-type capsule assembling process of the present invention；
Fig. 9 is the structural schematic diagram of molding die of the invention；
Figure 10 is the structural schematic diagram of moulding lid；
Figure 11 is the structural schematic diagram of upper mold；
Figure 12 is the structural schematic diagram of middle mould；
Figure 13 is the structural schematic diagram of lower template；
Figure 14 is the structural schematic diagram of stem；
Figure 15 is the structural schematic diagram of core；
Figure 16 is the structural schematic diagram of screw plug wire.
Specific embodiment
For delivering the ball-type capsule product of servo mechanism ball-type accumulator, the structure outline of ball-type capsule: diameter: Ф
95；The capsule upper half is uniformly excessive, by thick to thin (2.5~2mm)；The metalwork of top insertion: diameter: Ф 12.
The structure outline of ball-type capsule: diameter: Ф 120；The capsule upper half is uniformly excessive, thickness: 2.5mm；Top is embedding
The metalwork entered: diameter: Ф 13；Lower half wall thickness: 4mm.
The present invention is respectively used to the machine-shaping moulds of industrial equipment of delivery and weapon servo mechanism ball-type accumulator ball-type capsule,
Typical sacculus mould including two kinds of specifications, wherein a set of forming frock mold is that delivery three-level servo mechanism ball-type accumulator is used
The processing and manufacturing of ball-type capsule designs；Other set is weapon two stage servomechanism ball-type accumulator ball-type capsule designs processing system
It makes.Two kinds of ball-type capsule die structures for designing machine-shaping and sacculus article construction profile are almost the same.Concrete specification difference
For " Ф 95 ", " Ф 120 "；Machine-shaping manufacturing method is as follows:
(1) blend of chlorohydrin rubber and nitrile rubber is plasticated, after plasticating uniformly, is kneaded, later successively
Activator, reinforced filling, anti-aging agent is added, it is finally plus composite vulcanizing agent, thin 4 times logical；
(2) triangle bag 2-4 times is beaten, slice.It is lower at cylindrical blank, weighing.
The present invention is manufactured for servo mechanism ball-type accumulator with the machine-shaping of ball-type capsule product, including ball-type capsule
1, metallic framework 2, such as Fig. 1, ball-type capsule 1 is spherical structure open at one end, and the top of ball shape structure is provided with and metallic framework 2
The groove that structure matches, metallic framework 2 are embedded in suppress and be bonded by vulcanization in groove and be fitted close with groove, be integrally formed
Change structure, Kai Muluoke 250 " metal-rubber " adhesive is used in the present embodiment, skeleton 2 is stainless steel material preparation, this reality
Applying in example is similar ball shape structure, and 2 top of metallic framework is provided with fabrication hole, for ball-type capsule 1 during its sulfidization molding
Couple molding with inventive die 2 to fix.
The wall thickness on 1 intermediate position to top of ball-type capsule is gradually reduced, the wall thickness on intermediate position to top in the present embodiment
It is decreased to 2mm or uniformly by 3mm for uniform wall thickness 2.5mm；The wall thickness of intermediate position to open end is uniform wall thickness, the present embodiment
The wall thickness of intermediate position to open end is 3-5mm.Intermediate position refers to the cross section that the centre of sphere is crossed in ball-type capsule 1, i.e. convex annular
Play 4 place planes.
Moulding lid, upper mold, middle mould, lower die pull, stem, metal positive, metal plug wire, processing and manufacturing material used are
“40Cr”。
Moulding lid is opened, spiral shell of the metallic framework 2 of adhesive by upper cavity technique through-hole with " M4- deep 5 " will be first coated
Nail is connected and fixed, and then cylindrical type compound blank is packed into upper cavity, then successively assemble each section mould structure, push-in 200
In ton Evacuated vulcanizing press, vulcanization injection moulding is carried out.After pressure maintaining compacting after a period of time, mold, recruitment are pulled out
Dress opens moulding lid and decomposes each section mold.Metal plug wire in the metal positive for wherein having ball-type capsule product is backed out
And it is suppressed in access system and blows down capsule product.
Ball-type capsule 1 is rubber material preparation, selects the chlorohydrin rubber composition of the above two formula of the present invention.
In the examples below, tensile strength, elongation rate of tensile failure, break permanent deformation by GB/ head 28 measurement；Hardness
Shore A is measured by GB/T531.
Embodiment 1
100 parts of chloropharin glue raw rubber, 1.5 parts of stearic acid, 45 parts of carbon black N539,3 parts of lead orthoplumbate, accelerant N A-22 2
Part, it 1.5 parts of antioxidant NBC, 3 parts of antioxidant 4010NA, is parked 1~2 day after being kneaded uniformly, vulcanization, test.
The performance test results:
Hardness shore A 78；Tensile strength 17MPa；Elongation rate of tensile failure 260%；Break permanent deformation 4.0%；Compression is forever
Deformation long (100 DEG C × 48h, compression 30%) 7.6%.
Embodiment 2
90 parts of chloropharin glue raw rubber, 10 parts of nitrile rubber, 1.5 parts of stearic acid, 45 parts of carbon black N539,3 parts of lead orthoplumbate,
1.5 parts of accelerant N A-22,1.5 parts of antioxidant NBC, 3 parts of antioxidant 4010NA, 0.5 part of DCP, antioxidant 4010NA 3
Part, it is parked 1~2 day after being kneaded uniformly, vulcanization, test.
The performance test results:
Hardness shore A 80；Tensile strength 20MPa；Elongation rate of tensile failure 256%；Break permanent deformation 2.0%.
It once infuses using above two typical sizing material and using two kinds of specification ball-type capsule dies of the invention, be pressed and molded
The chlorohydrin rubber ball-type capsule product quality of size (internal diameter: Ф 95mm, Ф 120mm) meets carrying space and missile armament
Type design technical requirements and use functional requirement.It is swollen that ball-type capsule testpieces is first inflated (0.1MPa) pressure maintaining (10min)
Big test；Capsule oral area is fitted into leakage test fixture and is accessed in Figure 10 pilot system, capsule 0.1MPa nitrogen is filled with, swells
And whether trial inspection capsule has obvious gas leakage and capsule appearance surface quality.
The air-tightness and appearance of capsule, the high-intensitive pressure maintaining carried out after qualified using this capsule testpieces are checked during this period
Test, dynamic fatigue lifetime test situation and the result shows that: its capsule respectively inflated with nitrogen (pressure: 8MPa, 11.5MPa,
12.5MPa), high and low temperature (maximum temperature: 150 DEG C, minimum temperature: -35 DEG C), oil charging-discharging pressures cycle (0~21MPa, 16~
21MPa)；Under the requirement of the environment and highest precharge pressure 33MPa (pressure maintaining 5min) of oil charging-discharging frequency (0.2Hz), meet capsule
High-intensitive pressure maintaining and dynamic fatigue lifetime highest 100,000 times test requirements documents.
After ball-type capsule product is packed into servo mechanism accumulator, typical (low temperature: -35 DEG C, high temperature: 150 DEG C) test is carried out；
Life test.Ball-type accumulator ball-type capsule allusion quotation, longevity pilot system schematic diagram.As shown in figure 11
Typical ball-type capsule product testpieces high intensity pressure maintaining (the blowing pressure: 11.5MPa, oil pressure pressure: 33MPa pressure maintaining
Time: 5min) test, it is the molding capsule of assembled tool mold cure of the present invention that pilot system figure is shown in Figure 12 as shown in figure 12
Product testing part high intensity pressure maintaining pilot system figure；Capsule is fitted into accumulator shell and accesses high-intensitive pressure maintaining pilot system
In, it is filled with oil pressure 35MPa, pressure maintaining 5min, whether capsule breaks down in the process.
Permeation, gas leakage do not occur and suppresses oily phenomenon during test.Also it is practical much to meet servo mechanism accumulator capsule
Job requirement (random, accumulative practical dynamic duty number: about 932 times).
The present invention is mainly a kind of applied to carrying space and weapon servo mechanism ball-type accumulator ball-type capsule combination
The structure-design technique and material molding technology of mold；Including servo mechanism ball-type accumulator ball-type capsule shaping mould structure
Designing technique, product material molding technology, the selection of mould material material, determining and processing technique.Servo mechanism accumulator ball-type glue
The design of capsule composable mold structure fabricates technology.The composable mold forms (see photo) by 8 parts.With ball-type glue of the present invention
Capsule composable mold design processing and manufacturing ball-type capsule die meet the mating long-time of model produce in enormous quantities repeatedly it is special
It needs, extends the service life of ball-type capsule die, also reduce processing cost.Two kinds of model specification ball-type capsule products
Qualification rate is 90% or more.
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
It is as shown in Figure 1 the present invention for ball-type capsule structural schematic diagram in the capsule component of spheric accumulator, the present invention
For the capsule component of servo mechanism spheric accumulator, including ball-type capsule 1, metallic framework 2 and steel wire, such as Fig. 1 ball-type capsule 1
For spherical structure open at one end, the top of spherical structure is provided with the groove to match with 2 structure of metallic framework, metallic framework 2
It is suppressed and is bonded by vulcanization in insertion groove and is fitted close with groove, being integrally formed structure, using opening nurse in the present embodiment
250 metal of Lip river gram is as bonding agent.Metallic framework 2 is stainless steel material preparation, is similar dumbbell-shaped structure, gold in the present embodiment
Belong to 2 top of skeleton and be provided with fabrication hole, is fixed for the molding of ball-type capsule 1.
The wall thickness on 1 intermediate position to top of ball-type capsule is gradually reduced, the wall thickness on intermediate position to top in the present embodiment
2mm is uniformly decreased to by 2.5mm；The wall thickness of intermediate position to open end is uniform wall thickness, and intermediate position is to opening in the present embodiment
The wall thickness at mouth end is 3-5mm.Intermediate position refers to the cross section that the centre of sphere is crossed in ball-type capsule 1, i.e. 4 place plane of annular protrusion.
It is provided with annular protrusion 4 on the interior rib wall of ball-type capsule 1, when ball-type capsule 1 is packed into the ball of servo mechanism accumulator
After in shape cavity, by steel wire winding on the interior rib wall of ball-type capsule 1；Ball-type capsule 1 is rubber material.Usual annular protrusion 4
The centre of sphere that ball-type capsule 1 is crossed at intermediate position inside ball-type capsule 1, i.e. 4 place plane of annular protrusion.
Ball-type capsule 1 is rubber material preparation, and rubber material can choose chlorohydrin rubber, nitrile rubber or butyl rubber.
It is illustrated in figure 5 structure of steel wire schematic diagram in capsule component of the present invention, interior rib wall of the steel wire winding in ball-type capsule 1
Upper 3-5 circle.The material of steel wire is carbon steel material, and the both ends of steel wire are red copper material.
It is illustrated in figure 6 assembling schematic diagram of the ball-type capsule of the present invention in servo mechanism spheric accumulator, as seen from the figure,
Ball-type capsule 1 is flattened first, is fitted into the spherical cavity of servo mechanism spheric accumulator, make the outer surface of ball-type capsule 1 with
The inner surface of the spherical cavity of spheric accumulator fits closely, from the open end of ball-type capsule 1 by steel wire winding in ball-type capsule 1
The lid of spheric accumulator is covered tightly from the open end of ball-type capsule 1, screws on bolt by the root of the annular protrusion 4 of interior rib wall, complete
At assembly, wherein metallic framework 2 withstands on the through hole of spheric accumulator shell, which is oil inlet and outlet.
It is illustrated in figure 7 in ball-type capsule assembling process of the present invention and suppresses oil condition schematic diagram 1, as seen from the figure, work as a part
Oil has been stayed in during the work time between the outer surface of ball-type capsule 1 and the inner surface of spheric accumulator, in metallic framework 2 one
Side, the case where causing ball-type capsule 1 that can not work.
It is illustrated in figure 8 in ball-type capsule assembling process of the present invention and suppresses oil condition schematic diagram 2.As seen from the figure, work as a part
Oil has been stayed in during the work time between the outer surface of ball-type capsule 1 and the inner surface of spheric accumulator, at 2 liang of metallic framework
Side, the case where causing ball-type capsule 1 that can not work.
The present invention devises the ball-typed external of capsule (see Fig. 1) according to the internal structure profile of servo mechanism ball-type accumulator
Profile is fitted closely with ensuring that capsule is packed into cooperate after accumulator；Accumulator inflating port one surveys (lower half) sealing structure position
It is sealed into flange form static seal, capsule oral structure is devised according to its sealing the blowing pressure (8MPa), has been determined that oral area seals
Decrement (26~27%), connection bolt specification and quantity；Capsule is vapour, liquid isolation structure, the system that dynamic and static sealing structure combines
Product.It needs constantly to expand compressive deformation in the course of work, punching oil is drained the oil.Therefore, consider from capsule structure state, to make capsule
It can be worked normally in the high-frequency course of work without permeation, gas leakage and turtle oil (see Fig. 7, Fig. 8) phenomenon then by glue
Position (lower half: wall thickness) is designed as 3-5mm (uniform) among capsule oral area to capsule, to ensure that it is adjacent to accumulator inner walls
Without offsetting, overturning, guarantee its static seal state；Due to position to the capsule top (upper half: patch among rib wall in capsule
Nearly oil inlet) it needs constantly to expand compression stress alternation and deformation during the work time, punching oil is drained the oil, therefore, in capsule
Between position to top wall thickness be designed as by thickness to thin (uniformly round and smooth excessive: 2.5mm~2mm).Thus ensured from structure
The capsule upper half is easy to reset and restore to deform；Dynamic sealing part can be worked normally without suppressing oily phenomenon.
Due to being dynamic sealing at the top of position to capsule intermediate in capsule, it need to constantly fill, drain the oil in dynamic duty, subdue
Repeatedly, fierce collision is into and out of oilhole wall, close to oil inlet and outlet position is soft rubber at the top of capsule therefore, then it is round-trip (fill,
Drain the oil) it causes to decoct several times afterwards and cuts, falls off.So design increases metal structure work to ensure that capsule can subdue work for a long time
Skill part.Disengaging oilhole is round mouth, and metal structure process conditions are also configured as round structure, and top leaks out the circular arc type surface of metal
After draining the oil, it can be blocked, be covered completely just when close to shell into and out of hydraulic fluid port.Thus further ensure that capsule is dynamic
Hermetic unit can for a long time (high and low temperature) flexion work without gas leakage and suppress oily phenomenon.
Since position to top is movable sealing structure state (upper half) among capsule, intermediate position to oral area is static seal
Configuration state (lower half), therefore to further ensure that the expansion compression dynamic duty of the capsule upper half freely, the fixed branch in lower half
Support, auxiliary seal without arrange shifting, overturning.Then the root design of rib wall increases spring wrap steel wire (Fig. 5) in capsule.
Since capsule is metal-chlorohydrin rubber composite construction, working environment and working condition are exceedingly odious, to ensure glue
Capsule can work for a long time and high reliablity, and metalwork unsticking and obscission does not occur during the work time.Select import adhesive
(U.S., Kai Muluoke CH250) is targetedly bonded, to replace the domestic adhesive Lek sodium of tradition.
In the examples below, tensile strength, elongation rate of tensile failure, break permanent deformation referring to GB/T628 measure；Hardness
Shore A is measured referring to GB/T531；Capsule structure geomery is detected by " MF302-017 " pattern requirement；Spring wrap
Structure of steel wire shape by: " MF406-009 " pattern requirement is detected；" MF406-009 " pattern is pressed in the assembly of spring wrap steel wire
It is required that carrying out.Ф 95mm capsule testing program is made by oneself.
Above-mentioned capsule component is prepared by following mold and method:
As shown in figures 9 to 16, a kind of molding die of the capsule component for servo mechanism spheric accumulator, the shaping mould
Tool includes shaping female mold, molding formpiston 21, stem 22, screw plug wire 23 and moulding lid 24；Shaping female mold include lower template 11, in
Mould 12 and upper mold 13；
The stem 22 includes circular cone 221 above and following cylinder 222, and 221 part of circular cone has a side opening
2211,22 center of stem has through-hole 223, and the diameter on 221 top of circular cone is small, and the diameter of 221 bottom end of circular cone is big, cylinder 222
Diameter is less than the diameter of 221 bottom end of circular cone；The side opening 2211 of 221 part of circular cone is used to be vented during injecting glue and use；
With fluted in the lower template 11, the column part of stem 22 is embedded into the groove of lower template 11, and core
The column part of column 22 and the groove of lower template 11 match and to be interference fitted；
The small column 231 of the screw plug wire 23 including upper part, the circular cone 232 of middle section and lower sections of
Cylinder 233, the small column 231 of upper part and lower sections of cylinder 233 are connected by 232 transition of circular cone of middle section；
Lower sections of cylinder 233 has external screw thread；Screw plug wire 23 is located at 22 top of stem；
The namely core of molding formpiston 21, there is hollow-out part in core, and hollow-out part a part has internal screw thread
Match with screw plug wire 23, the tapered segment of another part and stem 22 of hollow-out part matches；
The part more than ball-type capsule centre of sphere is upper mold 13；
The top of upper mold 13 has glue injection cavities, and the bottom dead center position (namely forming the top of formpiston) of upper mold 13 is provided with
Screwing through hole, screwing through hole are respectively provided with an injecting glue through-hole for installing metallic framework, the two sides of screwing through hole, and the injecting glue of two sides is logical
Hole is used for injecting glue；
The moulding lid 24 be used for injecting glue when compress glue, make glue by injecting glue through-hole be flowed into shaping female mold and at
Capsule is formed in type face between type formpiston.
A kind of the step of forming method of the capsule component for servo mechanism spheric accumulator, this method includes:
(1) middle mould 12 is placed into lower template 11, stem 22 is installed in lower template 11, the cylinder of 22 bottom end of stem
It is interference fit connection with lower template 11；
(2) screw plug wire 23 is screwed into core by external screw thread, and the core with screw plug wire is installed to core
The top of column 22；
(3) upper mold 13 is installed to the top of middle mould 12, so far upper mold 13, middle mould 12 and lower template 11 formed capsule at
Type former；
(4) compound blank is put into the glue injection cavities of upper mold 13, then applying pressure using moulding lid 24 makes compound blank pass through injecting glue
Through-hole is injected into shaping female mold and forms in the type face between formpiston, after compound blank sulfidization molding, forms capsule；
(5) moulding lid 24 is opened, upper mold 13 is removed from lower template 11, lower template 11, stem 22 and middle mould 12 are divided
From, then middle mould 12 removed, finally screw plug wire 23 is removed out of core；
(6) gas nozzle is screwed into step (5) in remainder in the internal screw thread of core, squeezes into air pressure 0.1-0.5MPa,
Ball-type capsule swell and core of blowing off are obtained ball-type capsule subassembly product by air pressure.
Embodiment 1
No. 1 ball-type capsule and spring wrap steel wire, test check, simulation test.
Capsule component (capsule, spring wrap steel wire) product structure geomery and performance test (sample is cut out on capsule product)
As a result:
Hardness shore A 76；Tensile strength 17MPa；Elongation rate of tensile failure 260%；Break permanent deformation 4.0%；
Capsule product inflates the pressure maintaining of (0.1MPa) swell (10min) test, and pilot system figure is shown in Fig. 3, is illustrated in figure 3 this
Schematic diagram is magnified in ball-type capsule inflation in invention capsule component；
Capsule oral area is fitted into leakage test fixture and is accessed in pilot system, capsule 0.1MPa nitrogen is filled with, swells simultaneously
Whether trial inspection capsule has obvious gas leakage and capsule appearance surface quality.
As a result:
Gas leak phenomenon does not occur, meets its gas-tight seal requirement, presentation quality does not have obvious shortcoming.
Capsule component (capsule, spring wrap guiding principle silk) product high intensity pressure maintaining (the blowing pressure: 11.5MPa, oil pressure pressure:
The 33MPa dwell time: 5min) it tests, pilot system figure is shown in Fig. 4, is illustrated in figure 4 capsule component high intensity pressure maintaining examination of the present invention
Check system figure；Capsule is fitted into accumulator shell and is accessed in high-intensitive pressure maintaining pilot system, oil pressure 35MPa, pressure maintaining are filled with
5min, whether capsule breaks down in the process.
As a result:
During test, gas leakage does not occur after test and suppresses oily phenomenon.
After capsule component (capsule, spring wrap steel wire) product is packed into servo mechanism accumulator, typical (low temperature: -35 DEG C,
High temperature: 150 DEG C) test, service life (class meter works 100 hours) test result:
During test, permeation, gas leakage do not occur after test and suppresses oily phenomenon
Embodiment 2
No. 2 capsules and spring wrap steel wire, test check, simulation test.
Capsule component (capsule, spring wrap steel wire) product structure geomery and performance test (sample is cut out on capsule product)
As a result:
Hardness shore A 77；Tensile strength 18MPa；Elongation rate of tensile failure 255%；Break permanent deformation 3.0%；
Capsule product inflates the pressure maintaining of (0.1MPa) swell (10min) and tests (pilot system figure: seeing Fig. 4) result:
Gas leak phenomenon does not occur, meets its gas-tight seal requirement.
Capsule component (capsule, spring wrap guiding principle silk) product high intensity pressure maintaining (the blowing pressure: 11.5MPa, oil pressure pressure:
The 33MPa dwell time: 5min) test (pilot system figure: seeing Fig. 3) result:
During test, gas leakage does not occur after test and suppresses oily phenomenon.
After capsule component (capsule, spring wrap steel wire) product is packed into servo mechanism accumulator, typical (low temperature: -35 DEG C,
High temperature: 150 DEG C) test, pilot system figure is shown in Fig. 2, is illustrated in figure 2 spheric accumulator capsule allusion quotation of the present invention, longevity pilot system
Schematic diagram,
Service life (class meter works 100 hours) test (pilot system figure is shown in Fig. 2)
As a result:
During test, permeation, gas leakage does not occur after test and suppresses oily phenomenon
Using the ball-type capsule 1 using primary size (internal diameter: Ф 95mm mm) chlorohydrin rubber infused, be pressed and molded
Capsule product quality meets carrying space and the requirement of missile armament type design and requirement, using its capsule component testpieces
The capsule swell test of progress, high-intensitive pressure maintaining test show with servo mechanism allusion quotation, longevity test and simulation fatigue life test:
Its diameterThe capsule component testpieces of specification meets highest work fatigue life test and (pilot system figure: sees figure
2) add up flexion 100,000 times requirements.Also much meet servo mechanism complete machine class meter job requirement in 100 hours.
The above, optimal specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (14)
1. a kind of capsule component for servo mechanism spheric accumulator, it is characterised in that: including ball-type capsule, metallic framework and
Steel wire, wherein ball-type capsule is spherical structure open at one end, and the top of the spherical structure is provided with and metal framework structure phase
Matched groove, metallic framework are embedded in the groove and are fitted close with groove, be arranged on the interior rib wall of the ball-type capsule
There is annular protrusion, after ball-type capsule is packed into the spherical cavity of servo mechanism accumulator, by steel wire winding in ball-type capsule
On interior rib wall；The ball-type capsule is rubber material.
2. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Ball-type capsule among the wall thickness on position to top be gradually reduced, the wall thickness at intermediate position to open end is uniform wall thickness.
3. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Ball-type capsule among the wall thickness on position to top 2mm is uniformly decreased to by 2.5mm；The wall thickness of the intermediate position to open end
For 3-5mm.
4. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Annular protrusion where plane cross the centre of sphere of ball-type capsule.
5. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Ball-type capsule rubber material be chlorohydrin rubber, nitrile rubber or butyl rubber.
6. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Metallic framework be dumbbell shape, the top of metallic framework is provided with fabrication hole.
7. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Steel wire winding on the interior rib wall of ball-type capsule 3~5 circle.
8. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Metallic framework insertion ball-type capsule top groove in and be fitted close by bonded adhesives and groove, being integrally formed structure,
The metallic framework is stainless steel material preparation.
9. a kind of capsule component for servo mechanism spheric accumulator according to claim 1, it is characterised in that: described
Metallic framework insertion ball-type capsule top groove in and be bonded in groove by Kai Muluoke 250.
10. a kind of molding die of the capsule component for servo mechanism spheric accumulator, it is characterised in that: the molding die packet
Include shaping female mold, molding formpiston, stem, screw plug wire and moulding lid；Shaping female mold includes lower template, middle mould and upper mold；
The stem includes circular cone and following cylinder above；
With fluted in the lower template, the column part of stem is embedded into the groove of lower template, and the cylindrical portion of stem
Divide and matches with the groove of lower template；
The screw plug wire includes the circular cone and lower sections of cylinder of the small column of upper part, middle section, upper surface portion
The small column divided is connected with lower sections of cylinder by the conical transition of middle section；Lower sections of cylinder has outer spiral shell
Line；Screw plug wire is located above stem；
There is hollow-out part in the molding formpiston, hollow-out part a part matches with internal screw thread with screw plug wire, hollow out
The tapered segment of partial another part and stem matches；
The top of upper mold has glue injection cavities, and the bottom dead center position of upper mold is provided with screwing through hole, and screwing through hole is for installing metal
Skeleton, the two sides of screwing through hole are respectively provided with an injecting glue through-hole, and the injecting glue through-hole through-hole of two sides is used for injecting glue；
The moulding lid is used to compress glue when injecting glue, and glue is made to be flowed into shaping female mold and molding formpiston by injecting glue through-hole
Between type face in form capsule.
11. a kind of molding die of capsule component for servo mechanism spheric accumulator according to claim 10,
Be characterized in that: the diameter of the cone tip above the stem is small, and the diameter of circular cone bottom end is big, the cylinder below stem it is straight
Diameter is less than the diameter of circular cone bottom end；The side opening of tapered segment is used to be vented during injecting glue and use.
12. a kind of molding die of capsule component for servo mechanism spheric accumulator according to claim 10,
Be characterized in that: the column part of the stem and the groove of lower template are interference fit.
13. a kind of forming method of the capsule component for servo mechanism spheric accumulator, it is characterised in that the step of this method
Include:
(1) middle mould is placed into lower template, stem is installed in lower template, the cylinder and lower template of stem bottom end are interference
It is cooperatively connected；
(2) screw plug wire is screwed into core by external screw thread, and the core with screw plug wire is installed to the upper of stem
Side；
(3) upper mold is installed to the top of middle mould, so far upper mold, middle mould and lower template form the shaping female mold of capsule；
(4) compound blank is put into the glue injection cavities of upper mold, then applying pressure using moulding lid injects compound blank by injecting glue through-hole
Into the type face between shaping female mold and molding formpiston, after compound blank sulfidization molding, capsule is formed；
(5) moulding lid is opened, upper mold is removed from lower template, lower template, stem are separated with middle mould, then middle mould is removed,
Finally screw plug wire is removed out of core；
(6) by squeezing into air pressure for ball-type capsule swell and core of blowing off, ball-type capsule subassembly product is obtained.
14. a kind of forming method of capsule component for servo mechanism spheric accumulator according to claim 13,
It is characterized in that: air pressure 0.1-0.5MPa.
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| CN201810997543.3A CN109049491B (en) | 2018-08-29 | 2018-08-29 | Capsule assembly for spherical pressure accumulator of servo mechanism and forming die and forming method thereof |
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|---|---|---|---|
| CN201810997543.3A CN109049491B (en) | 2018-08-29 | 2018-08-29 | Capsule assembly for spherical pressure accumulator of servo mechanism and forming die and forming method thereof |
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| CN110253481A (en) * | 2019-06-27 | 2019-09-20 | 北京实验工厂有限责任公司 | One kind shrinking assembly method and device for ball-type capsule |
| CN116461041A (en) * | 2023-06-20 | 2023-07-21 | 宁波市特种设备检验研究院 | Seamless rubber air bag forming process |
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| CN109049491B (en) | 2020-09-18 |
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