CN110509584A - A kind of inflatable hollow tire of one-pass molding and preparation method thereof - Google Patents
A kind of inflatable hollow tire of one-pass molding and preparation method thereof Download PDFInfo
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- CN110509584A CN110509584A CN201910924858.XA CN201910924858A CN110509584A CN 110509584 A CN110509584 A CN 110509584A CN 201910924858 A CN201910924858 A CN 201910924858A CN 110509584 A CN110509584 A CN 110509584A
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- Prior art keywords
- carcass
- hatch frame
- mold
- cavity structure
- inner liner
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0661—Rigid cores therefor, e.g. annular or substantially toroidal cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0678—Injection moulding specially adapted for tyres or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/102—Tyres built-up with separate rubber parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/107—Non-inflatable or solid tyres characterised by means for increasing resiliency comprising lateral openings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses inflatable hollow tires of a kind of one-pass molding and preparation method thereof, belong to tire production field.It includes cavity structure, is circumferentially opened in inside carcass, and hollow chamber is formed inside carcass；Hatch frame, for the groove being circumferentially opened on carcass inner ring face, cavity structure is in communication with the outside by hatch frame；And inner liner, the inner liner one by being formed in cavity structure surface are constituted with the inner liner two for being closed hatch frame；Valve cock mounting hole is opened in carcass side, and cavity structure is connected to carcass.The present invention passes through the cooperation of hatch frame and cavity structure, make hollow carcass can be with one-pass molding, what inner liner also can be convenient coat, simplify the manufacture craft of tire, valve cock is installed to inflating in hollow structure by valve cock mounting hole, cooperate inner liner, forms the damping chamber for stablizing air pressure, substantially increase damping property.
Description
Technical field
The invention belongs to tire production field, more specifically to a kind of inflatable hollow tire of one-pass molding and its
Production method.
Background technique
Tire is divided into tubed tyre and tubeless tyre, in view of current conventional tires tire because itself production technology at
Ripe, bradyseism and comfort of riding is good, load-bearing is good and is widely used.But with because of tyre explosion, abrasion and galloping
And it is more and more to have caused a large amount of vehicle driving safety accident, tubeless tyre, itself with high security, energy conservation and environmental protection etc.
Advantage and increasingly paid close attention to by people.Tubeless tyre is divided into solid tyre and hollow tire two major classes, hollow tire very great Cheng
Degree solves in solid tyre ride and causes the defect jolted because of resilience deficiency, but damping performance is compared to same
The inner tube tyre of model is still insufficient.
Existing hollow tire is made of traditional molding sulfidization molding technique, and this technique is due to complex procedures itself
Be difficult to realize full-automatic production, and larger by man's activity, therefore when underway empty tire production, production efficiency it is low and at
Product rate is low.
China Patent Publication No.: 109109352 A of CN；Publication date: on January 1st, 2019；Disclose a kind of rubber product
Disposable injection, hollow and sulfidization molding production method, this method can complete injection, hollow and vulcanization in same die cavity
Process, the die cavity include upper mold half, lower mold half and mold core, and mold core is that the hollow of die cavity lays the foundation, and are had after hollow
Be filled with the condition of high temperature and high pressure gas required for vulcanizing, so will injection moulding, hollow and vulcanization plant it is integrated, keep away
Heat losses caused by each process circulation in the prior art and process circulation cost are exempted from, although substantially improving traditional handicraft work
The disadvantage of sequence complexity, simplifies production process, by the use to the technique, though finding the technique theoretically can realize entirely
Automated production, but in the actual production process because of hollow tire sulfidization molding when, high-temperature gas or compressed air etc. need to be passed through
Its inner cavity is heated, it is found that hollow tire yield rate is lower, while the occurrence of equipment such as high-temperature gas or compressed air being needed to run
There are security risk and increase the responsible coefficient that product realizes technique in the process, therefore is difficult to realize large-scale industrial production.
Summary of the invention
1, it to solve the problems, such as
For the problem that existing inflatable hollow tire production is complicated, damping property difference poor air-tightness, the present invention provides one kind
Inflatable hollow tire of one-pass molding and preparation method thereof, by the cooperation of hatch frame and cavity structure, makes hollow carcass can
With one-pass molding, what inner liner also can be convenient coat, and installs valve cock in hollow structure by valve cock mounting hole
Inflation cooperates inner liner, forms the damping chamber for stablizing air pressure, substantially increases damping property.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of inflatable hollow tire of one-pass molding, including carcass, further includes:
Cavity structure is circumferentially opened in inside carcass, and hollow chamber is formed inside carcass；
Hatch frame, for the groove that is circumferentially opened on carcass inner ring face, hatch frame is by cavity structure and extraneous
Connection；And
Inner liner, by being formed in the inner liner one on cavity structure surface and two structure of inner liner for being closed hatch frame
At；
Valve cock mounting hole is opened in carcass side, and cavity structure is connected to carcass.
Cavity structure is equipped with inside carcass, cavity structure constitutes the hollow of tire, in tire used, this cavity knot
Structure carries out bumper and absorbing shock to the impact force that tyre surface transmits, and achievees the effect that anti-mountain peak, and alleviate carcass weight, reduces rolling
Resistance；Hatch frame is the opening being formed on carcass inner ring face, and cavity structure is in communication with the outside, can be with by hatch frame
When making tire building, after hollow structure molding, the mold core for being used to form hollow structure is extracted out from hatch frame directly, is not necessarily to
It is operated by twice-die-opening, secondary mould closing, gas injection, pressure release etc., reduces fault, accident rate, yield rate is improved, will
Mold core is put into the set of molds of production tire after molding, after tire building, directly mold core extraction can be obtained, make hollow structure
Energy disposal molding, and hatch frame also reduces carcass weight, further decreases material cost and tire rolling resistance, is not reducing
It realize hollow structure can with disposal molding, convenient for production and high yield rate, in cavity
Structure wall surface and hatch frame wall surface have been respectively formed on inner liner, and wherein inner liner one is wrapped on the wall surface of cavity structure, gas
Second two wall surfaces of hatch frame are closed by close layer, so that cavity structure becomes the hollow chamber being sealed in inside carcass, be convenient for
Charge operation carries out, and due to the presence of hatch frame, inner liner one can enter cavity structure by hatch frame by equipment
In carry out attachment operation, inner liner two can be readily attached on hatch frame wall surface, so that the formation of inner liner structure is grasped
Also it is easily achieved, and by inner liner structure, so that cavity structure becomes the independent hollow chamber inside carcass, carcass
After upper installation wheel rim, under the compression of wheel rim, secondary seal at hatch frame through inner liner two Yu wheel rim pressing force be ensure that
The air-tightness of entire carcass hollow structure, carcass side wall are provided with valve cock mounting hole, cavity structure are in communication with the outside, valve
Mouth is installed by valve cock mounting hole, can be inflated to the intracorporal cavity structure of tire, be reached the outstanding damping of pneumatic tire
Low rolling hinders effect, and since carcass hollow structure wall surface is formed with inner liner, there is no need to the inner tubes of a tyre also can guarantee leakproofness, passes through gas
Be stable constant pressure space in hollow structure after door mouth inflation, when carcass jolts in use, encountering, cavity structure it is stable
The carcass that inner gas pressure is equivalent to the same supporting deformation of spring quickly recovers to original state, reduces rolling resistance, enhances to encounter and jolt
When stability of riding, and the formation of inner liner structure protects the wall surface of cavity structure, further slows down wall surface aging
Speed increases the Acceptable life of carcass.
Further, the opening width r of the hatch frame is gradually increased from cavity structure to carcass inner ring direction.
The tire of this programme, the shape of hatch frame are shown as from carcass section from cavity structure to carcass inner ring direction
In triangular form, so that mold core takes out operation and is easy to carry out after tire building, the intracorporal cavity structure of tire will not be damaged and opening is tied
Structure, the high yield rate of hollow tire.
Further, the opening width r of the hatch frame is gradually reduced from cavity structure to carcass inner ring direction.
The shape of hatch frame is shown as from cavity structure to carcass inner ring direction from carcass section in inverted-triangular, wheel
After rim installation, from carcass two side compressions of inside, matches to form locking effect with hatch frame, on the one hand enhance wheel rim and tire
Fastening effect between body increases safety when tire used, and on the other hand, wheel rim compression after-opening structure closure is closer,
Cooperate with inner liner two, further enhances the sealing effect to cavity structure.
Further, carcass one-pass molding in set of molds forms.
The design of the hatch frame and cavity structure of the application, allow carcass by corresponding set of molds disposably at
Type enormously simplifies the production process of hollow carcass, improves yield rate, improves production efficiency.
Further, the set of molds includes:
Lower mold offers type chamber on land area, and the cavity shape matches with half of carcass shape, described
It is raised upward on surface of mould cavity equipped with valve cock mould, the valve cock mould shape matches with valve cock installation hole shape；
Middle mold is made of interior cavity mold and opening mould, and the interior cavity mold is shape and the cavity structure shape phase
The ring structure body matched, the opening mould are the ring segment that shape and the hatch frame shape match, and the opening mould is solid
Surely it is connected on the inside of the interior cavity mold；The middle mold is placed among lower mold and upper mold；
Upper mold, structure match with the lower mold, and symmetrical expression is set to above the lower mold；
Injection orifice is the through-hole for being provided with the lower mold or upper mold side wall and being connected to the type chamber.
The injection orifice of this programme is provided with upper mold side wall, is connected to the type chamber on upper mold land area, and upper mold is under
After mold clamping, type chamber constitutes the die cavity of complete carcass shape, and middle mold is placed between upper/lower die as mold core, middle mold
Interior cavity mold be completely disposed at after molding in the die cavity that is formed, opening mould is partially disposed in die cavity, and part indwelling is convenient in outside die cavity
Middle mold is taken out after carcass molding.
Further, annular offers mounting groove, the shape of the mounting groove on the land area of the intracavitary side of lower mould type
The Oral incision of opening of shape and the middle mold matches；The upper mold land area corresponding position offers identical mounting groove.
On the land area of lower mold, the opening mould set-down location of middle mold offers mounting groove, upper mold corresponding position
Also mounting groove is accordingly offered, the placement of middle mold, middle mold hollow space are stuck in by mounting groove just before convenient molding every time
On the land area part of protrusion, allow each middle mold that placement is accurately positioned, further increases production carcass product
Qualification rate guarantees product quality.
A kind of production method of the inflatable hollow tire of disposal molding, steps are as follows:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold is mounted on lower mold by mounting groove, upper mold and lower mold clamping；
Three, it injects: standing molding after flow-like sizing material after plasticizing is filled entire type chamber by injection orifice；
Four, vulcanize: the intracavitary rubber product of type is vulcanized；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass, middle mold is taken out from hatch frame；
Six, it sprays inner liner: by hatch frame, the airtight layer material being in a liquid state being coated to cavity structure wall surface,
After cavity structure wall surface has coated, then the airtight layer material being in a liquid state is covered to hatch frame coating wall；
Seven, SC slow curing: the carcass after the completion of step 6 is socketed on shaping loop, carries out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass finished product: is removed from shaping loop.
Further, it is vacuumized after step 2 molding, intracavitary type is in negative pressure state；In clamping process, type chamber is added
Temperature is to 150~200 DEG C.
Rubber mass can be easier injection and fill up die cavity when vacuum state in the die cavity of set of molds is facilitated injecting step,
By respectively internal equipped with heating jointly inside and outside heating device to heating outside set of molds or upper/lower die, guarantee type chamber is everywhere
Temperature reaches 150~200 DEG C, it is ensured that the rubber mass mobility for being injected into die cavity is enough, will not be pre-chilled that be bonded in injection orifice attached
Recent photo rings the injection of rubber mass.
Further, the coating method of airtight layer material includes that artificial smear sprays automatically with nozzle in step 6.
The artificial method for smearing inner liner is to strut hatch frame, and the airtight layer material being in a liquid state is dipped by brush, is brushed
Son is extend into cavity structure by hatch frame, carries out the smearing of airtight layer material, after the completion of cavity structure wall surface is smeared, then
Carry out the smearing of airtight layer material on hatch frame wall surface；The method that nozzle sprays automatically is that nozzle is extend by hatch frame
In cavity structure, airtight layer material is sprayed from spray-nozzle type sprinkler head by compressed air and is attached to cavity structure wall surface, nozzle is along tire
Body circumferentially rotates, and makes uniformly to adhere to airtight layer material on one week cavity structure wall surface, after the completion of being sprayed on cavity structure wall surface,
Airtight layer material is sprayed on hatch frame wall surface with nozzle.Artificial smearing method is at low cost, is not necessarily to special equipment, but coat effect
Fruit is not good enough, and the automatic spraying effect of nozzle is good, the more uniform densification of the inner liner of formation, but needs used device cost.
Further, step 7 SC slow curing process carries out at a temperature of 60~100 DEG C, and the duration is 1~2h.
The temperature of SC slow curing is controlled at 60~100 DEG C, is lower than 60 DEG C of SC slow curing decreased effectiveness, airtight layer material and carcass wall
The adhesive force in face is inadequate, is higher than 100 DEG C, and SC slow curing can be such that the performance of airtight layer material drops at a temperature of being higher than 100 DEG C for a long time
It is low, to reduce the overall performance of carcass；The SC slow curing time cannot be less than 1h, inadequate less than 1h SC slow curing completeness, can exist
The case where hatch frame is not completely closed by inner liner two, SC slow curing time are greater than 2h, and the performance of airtight layer material can reduce, from
And reduce the overall performance of carcass.Pass through SC slow curing, it is ensured that sealing and reinforcing inner liner structure of the inner liner two to hatch frame
Adhesion effect on carcass inner wall.
3, beneficial effect
Compared with the prior art, the invention has the benefit that
(1) the inflatable hollow tire of one-pass molding of the invention is cooperated by carcass internal cavity structure and hatch frame, is made
Carcass is obtained through one injection straight forming, manufacture craft is simple, and finished product is easy, and carcass uniformity is high, and the degree of balance is good, nothing on carcass
Fitting, joint, in use, the stability, safety especially when high speed uses are high, the presence of hatch frame
So that the attachment operation of inner liner is also easy to carry out, by opening up valve cock mounting hole, so that can be inflated in carcass, fill
Air-tightness is guaranteed after gas, under the action of the cavity structure of sealing, tire advance encounter jolt and delayed via cavity structure
Suction is received, and damping performance greatly increases, and the inner liner structure for being formed in cavity structure wall surface is equivalent to protective layer, is sealed improving
Property, guarantee to protect wall surface while air pressure, slows down wall surface aging speed, reduce incidence of blowing out, further increase tire
The Acceptable life of body；
(2) the inflatable hollow tire of one-pass molding of the invention, the shape of hatch frame are shown as certainly from carcass section
Cavity structure to carcass inner ring direction is in triangular form, so that mold core takes out operation and is easy to carry out after tire building, will not damage tire
Intracorporal cavity structure and hatch frame, the high yield rate of hollow cushion tyre；
(3) the inflatable hollow tire of one-pass molding of the invention, the shape of hatch frame are shown as certainly from carcass section
Cavity structure to carcass inner ring direction is in inverted-triangular, after wheel rim installation, from carcass two side compressions of inside, is matched with hatch frame
Conjunction forms locking effect, on the one hand enhances the fastening effect between wheel rim and carcass, increases safety when tire used, another
Aspect, wheel rim compression after-opening structure closure is closer, cooperates with inner liner two, further enhances the sealing to cavity structure
Effect；
(4) the inflatable hollow tire of one-pass molding of the invention, the design of hatch frame and cavity structure, so that carcass can
To enormously simplify the production process of hollow carcass, improve yield rate, improve by corresponding set of molds disposal molding
Production efficiency；
(5) the inflatable hollow tire of one-pass molding of the invention passes through the cooperation of upper, middle and lower mold, a die closing operation
The production that the carcass of hollow structure can be completed enormously simplifies the manufacture craft of inflatable hollow tire, easy to operate, raw
It produces high-efficient；
(6) the inflatable hollow tire of one-pass molding of the invention, on the land area of lower mold, the opening mould of middle mold is put
The place of setting offers mounting groove, and upper mold corresponding position also accordingly offers mounting groove, and middle mold puts before convenient molding every time
It sets, middle mold hollow space, which is stuck in just by mounting groove, on the land area part of protrusion, allows each middle mold accurate
Positioning is placed, and the qualification rate of production carcass product is further increased, and guarantees product quality；
(7) the inflatable hollow tire of one-pass molding of the invention, structure is simple, and design is rationally, easily fabricated；
(8) production method of the inflatable hollow tire of one-pass molding of the invention injects vulcanization, Ji Kezhi after primary molding
It connects to obtain the carcass of molding integrated hollow structure, the coating processes of inner liner then can be carried out by hatch frame, most
The adhesion effect of inner liner is further strengthened by low temperature SC slow curing step afterwards, strengthens inner liner to the leakproofness of hatch frame,
Entire simple process reduces production cost, makes time-consuming short, high production efficiency, and since the carcass of production is integrated chemical conversion
Type, uniformity, balance quality are high, and usage experience is good, and security performance is high；
(9) production method of the inflatable hollow tire of one-pass molding of the invention will be evacuated in the die cavity of set of molds
Rubber mass can be easier injection and fill up die cavity when state facilitates injecting step, by the way that the temperature heating of type chamber everywhere is reached 150
~200 DEG C, it is ensured that the rubber mass mobility for being injected into die cavity is enough, and will not be bonded in injection orifice to the cold nearby influences rubber mass
Injection；
(10) production method of the inflatable hollow tire of one-pass molding of the invention is joined by controlling reasonable SC slow curing
Number, it is ensured that adhesion effect of the inner liner two to the sealing effect and reinforcing inner liner structure of hatch frame on carcass inner wall.
Detailed description of the invention
Fig. 1 is the inflatable hollow tire structural schematic diagram of one-pass molding of the invention；
Fig. 2 is the inflatable hollow tire cross-sectional view of one-pass molding of the invention；
Fig. 3 is the enlarged drawing of A in Fig. 2；
Fig. 4 is the enlarged drawing of A in Fig. 2 of embodiment 3；
Fig. 5 is the enlarged drawing of A in Fig. 2 of embodiment 2；
Fig. 6 is the structural schematic diagram of the set of molds of the present invention production inflatable hollow tire of one-pass molding；
Fig. 7 is the lower die structure schematic diagram of the set of molds of the present invention production inflatable hollow tire of one-pass molding；
Fig. 8 is the middle mold structure diagram of the set of molds of the present invention production hollow tire of one-pass molding；
Fig. 9 is the middle mold partial cutaway structural schematic diagram of the set of molds of the present invention production hollow tire of one-pass molding.
In figure:
1, carcass；10, cavity structure；11, hatch frame；12, inner liner；120, inner liner one；121, inner liner two；
13, valve cock mounting hole；
2, set of molds；20, lower mold；200, type chamber；201, mounting groove；202, valve cock mould；21, middle mold；210, interior
Cavity mold；211, be open mould；22, upper mold.
Specific embodiment
The present invention is further described below with attached drawing combined with specific embodiments below.
Embodiment 1
As depicted in figs. 1 and 2, the inflatable hollow tire of the one-pass molding of the present embodiment, including carcass 1, further includes:
Cavity structure 10 is circumferentially opened in inside carcass 1, forms hollow chamber inside carcass 1；
Hatch frame 11, for the groove that is circumferentially opened on 1 inner ring face of carcass, hatch frame 11 is by cavity structure 10
It is in communication with the outside；And
Inner liner 12, by being formed in the inner liner 1 on 10 surface of cavity structure and the gas for being closed hatch frame 11
Close layer 2 121 is constituted；
Valve cock mounting hole 13 is opened in 1 side of carcass, and cavity structure 10 is connected to carcass 1.
Mold core is placed in the type chamber of forming tire when the hollow cavity molding of hollow tire is made by means of tire mostly, and
Tyre cavity molding after it is also contemplated that mold core abjection, cause existing hollow tire can not disposable straight forming, make
Manufacturing as bothering for hollow inflation-free tire is obtained, applicant applied on August 22nd, 2018, publication No. CN
A kind of production method of hollow tire is proposed in the patent document of 109109352A, in this way, can be by hollow tire
Preparation process is simplified to achievable after die sinking molding twice, but this method process still slightly complicated and yield rate is not high, this
The structure that application improves hollow tire cooperates corresponding mold that can make hollow wheel tire one-pass molding by improved structure,
The production process for greatlying simplify hollow tire reduces production cost and high yield rate.
The inflatable hollow tire of the one-pass molding of the present embodiment is equipped with cavity structure 10, cavity structure 10 inside carcass 1
The hollow of tire is constituted, in tire used, this cavity structure 10 carries out bumper and absorbing shock to the impact force that tyre surface transmits, and reaches
The effect on anti-mountain peak, and 1 weight of carcass is alleviated, reduce rolling resistance；Hatch frame 11 is to be formed on 1 inner ring face of carcass
Opening, cavity structure 10 is in communication with the outside, by hatch frame 11, when can make tire building, after hollow structure molding, directly
Connect and extract the mold core for being used to form hollow structure from hatch frame 11 out, without by twice-die-opening, secondary mould closing, gas injection,
The operation such as pressure release, reduces fault, accident rate, yield rate is improved, and mold core is put by the tire of the present embodiment structure
It makes after being molded in the set of molds of tire, after tire building, directly mold core extraction can be obtained, keep hollow structure primary
Property molding, and hatch frame 11 also reduces 1 weight of carcass, material cost and tire rolling resistance is further decreased, in not reducing
It realize hollow structure can with disposal molding, convenient for production and high yield rate.
Further, the present embodiment has been respectively formed on inner liner 12 in 10 wall surface of cavity structure and 11 wall surface of hatch frame,
Wherein inner liner 1 is wrapped on the wall surface of cavity structure 10, and inner liner 2 121 are closed two wall surfaces of hatch frame 11
It closes, so that cavity structure 10 becomes the hollow chamber being sealed in inside carcass 1, is carried out convenient for charge operation, due to hatch frame
11 presence, inner liner 1 can be entered in cavity structure 10 by hatch frame 11 by equipment and carry out attachment and operate, gas
Close layer 2 121 can be readily attached on 11 wall surface of hatch frame, so that the formation of 12 structure of inner liner of the present embodiment is grasped
Also it is easily achieved, and by 12 structure of inner liner, so that cavity structure 10 becomes the independent hollow cavity inside carcass 1
Room, after wheel rim is installed on carcass 1, under the compression of wheel rim, through inner liner 2 121 and wheel rim pressing force at hatch frame 11 two
Secondary sealing ensure that the air-tightness of entire 1 hollow structure of carcass.
For make the carcass 1 of the present embodiment have better damping performance and meanwhile roll resistance it is smaller, 1 side wall of carcass of the present embodiment is set
Valve cock mounting hole 13 has been set, cavity structure 10 has been in communication with the outside, valve cock is installed by valve cock mounting hole 13, can be right
Cavity structure 10 in carcass 1 is inflated, and reaches the low rolling resistance effect of the outstanding damping of pneumatic tire, due to the tire of the present embodiment
1 hollow structure wall surface of body is formed with inner liner, and there is no need to the inner tubes of a tyre also can guarantee leakproofness, hollow after being inflated by valve cock
It is stable constant pressure space in structure, when carcass 1 jolts in use, encountering, the stable inner gas pressure phase in cavity structure 10
When the carcass 1 in the same supporting deformation of spring quickly recovers to original state, reduce rolling resistance, enhance encounter when jolting riding it is steady
It is qualitative, and the formation of 12 structure of inner liner protects the wall surface of cavity structure 10, further slows down the speed of wall surface aging, increases
The Acceptable life of carcass 1 is added.
For the carcass 1 of the present embodiment through one injection straight forming, manufacture craft is simple, and finished product is easy, 1 uniformity of carcass
Height, the degree of balance is good, without fitting, joint on carcass 1, in use, stability, safety especially when high speed uses
Property it is high, the presence of hatch frame 11 make inner liner 12 attachment operate be easy carry out, by opening up valve cock mounting hole 13,
It can be inflated in the carcass 1 for being, air-tightness is guaranteed after inflation, under the action of cavity structure 10 of sealing, tire row
It jolts via cavity structure 10 into what is encountered by snubber, damping performance greatly increases, and is formed in 10 wall surface of cavity structure
12 structure of inner liner is equivalent to protective layer, protects wall surface while improving leakproofness, slows down wall surface aging speed, reduce
The occurrence of blowing out probability further increases the Acceptable life of carcass 1.
Embodiment 2
As shown in figure 5, the inflatable hollow tire of the one-pass molding of the present embodiment, does further on the basis of embodiment 1
It improves, the opening width r of the hatch frame 11 is gradually increased from cavity structure 10 to 1 inner ring direction of carcass.
The shape of the tire of the present embodiment, hatch frame 11 is shown as from 1 section of carcass from cavity structure 10 to carcass 1
Inner ring direction is in triangular form, the hatch frame 11 of the present embodiment, so that mold core takes out operation and is easy to carry out, no after tire building
The cavity structure 10 and hatch frame 11 in carcass 1, the high yield rate of hollow tire can be damaged.
Embodiment 3
As shown in figure 4, a kind of inflatable hollow tire of one-pass molding of the present embodiment, do on the basis of embodiment 1 into
One step is improved, and the opening width r of the hatch frame 11 is gradually reduced from cavity structure 10 to 1 inner ring direction of carcass.
The shape of the tire of the present embodiment, hatch frame 11 is shown as from 1 section of carcass from cavity structure 10 to carcass 1
Inner ring direction is in inverted-triangular, the hatch frame 11 of the present embodiment, after wheel rim installation, from 1 two side compressions of inside of carcass, with opening
Structure 11 matches to form locking effect, on the one hand enhances the fastening effect between wheel rim and carcass 1, when increasing tire used
Safety, on the other hand, wheel rim compress after-opening structure 11 be closed it is closer, with inner liner 2 121 cooperate, further enhance
To the sealing effect of cavity structure 10.
Further, as shown in figure 3, the opening width r of the hatch frame 11 is no more than the 1 inboard width L of carcass
1/6.
The opening width r of hatch frame 11 is bigger, the easier progress of taking-up operation of mold core, but excessive hatch frame
11 are easy to cause 1 inner sidewall of carcass excessively thin so that 1 inside structure of carcass is more easily damaged collapsing, causes after wheel rim installation
Tire can not normal use, and the material of the inner liner 2 121 for the excessive needs of being open is with regard to more, bad to air-tightness and consumption
The opening width r control of hatch frame 11 is no more than the 1 inboard width L of carcass through testing by airtight material added cost
1/6 when can guarantee that under the conditions of normal wheel rim pressing force and tire applicable working condition, 1 inside structure of carcass will not be damaged
It is bad.
Embodiment 4
As shown in fig. 6, a kind of inflatable hollow tire of one-pass molding of the present embodiment, does on the basis of Examples 1 to 3
It is further improved, the carcass 1 one-pass molding in set of molds 2 forms.
The design of the hatch frame 11 and cavity structure 10 of the application, allows carcass 1 to pass through corresponding set of molds 2 one
Secondary property molding, enormously simplifies the production process of hollow carcass, improves yield rate, improve production efficiency.
Embodiment 5
As shown in fig. 6, a kind of inflatable hollow tire of one-pass molding of the present embodiment, does on the basis of Examples 1 to 4
It is further improved, the set of molds 2 includes:
Lower mold 20 offers type chamber 200,200 shape of type chamber and half of 1 shape phase of carcass on land area
It matches, is raised upward on 200 wall surface of type chamber equipped with valve cock mould 201,201 shape of valve cock mould and valve cock are installed
13 shape of hole matches；
Middle mold 21 is made of interior cavity mold 210 and opening mould 211, and the interior cavity mold 210 is shape and the cavity knot
The ring structure body that 10 shape of structure matches, the opening mould 211 are the ring that shape and 11 shape of hatch frame match
Shape piece, the opening mould 211 are fixedly connected on 210 inside of interior cavity mold；The middle mold 21 is placed in lower mold 20 and upper mold
Among tool 22；
Upper mold 22, structure match with the lower mold 20, and symmetrical expression is set to 20 top of lower mold；
Injection orifice is to be provided with the lower mold 20 or 22 side wall of upper mold and the through-hole for being connected to the type chamber 200.
The injection orifice of the present embodiment is provided with 22 side wall of upper mold, is connected to the type chamber 200 on 22 land area of upper mold, on
After mold 22 and the molding of lower mold 20, type chamber 200 constitutes the die cavity of complete 1 shape of carcass, the wall surface of lower 20 type chamber 200 of mold
Protrusion is equipped with valve cock mould 201, the top of valve cock mould 201 and the middle mould after placement at upper 1 sidewall location of corresponding shaped carcass
The interior cavity mold 210 of tool 21 abuts, so that 1 side of carcass is connected to by molding valve cock mounting hole 13 with cavity structure 10, middle mould
Tool 21 as shown in Figure 8 and Figure 9, is placed between upper/lower die, after the interior cavity mold 210 of middle mold 21 is completely disposed at molding as mold core
In the die cavity of formation, opening mould 211 is partially disposed in die cavity, and part indwelling is after outside die cavity, facilitating carcass 1 to form by middle mold
21 take out.
The set of molds 2 of the present embodiment makes interior cavity mold 210 in use, middle mold 21 is placed on lower 20 land area of mold
Above type chamber 200, opening 211 part of mould is located at 200 top of type chamber, is partially disposed on land area, places middle mold 21
Position after close upper mold 22, then by injection orifice carry out gum material injection, injected and formed to carcass 1 in die cavity
Afterwards, vulcanize, die sinking removes carcass 1, the hollow carcass 1 there are valve cock mounting hole 13 can be obtained in mold 21 in extraction.
The set of molds 2 of the present embodiment, by the cooperation of upper, middle and lower mold, one time hollow knot has been can be completed in die closing operation
The production of the carcass 1 of structure enormously simplifies the manufacture craft of hollow tire, easy to operate, high production efficiency.
Embodiment 6
As shown in fig. 7, a kind of inflatable hollow tire of one-pass molding of the present embodiment, done on the basis of embodiment 5 into
One step is improved, and annular offers mounting groove 201 on the land area of lower 20 type chamber of mold, 200 inside, the mounting groove 201
Shape and 211 shape of opening mould of the middle mold 21 match；The 22 land area corresponding position of upper mold offers identical
Mounting groove 201.
The set of molds 2 of the present embodiment, on the land area of lower mold 20,211 set-down location of opening mould of middle mold 21 is opened up
There is mounting groove 201,22 corresponding position of upper mold also accordingly offers mounting groove 201, middle mold 21 before convenient molding every time
It places, middle 21 hollow space of mold is stuck in just on the land area part of 201 side protrusion of mounting groove, so that each middle mold 21
Placement can be accurately positioned, further increase the qualification rate of production 1 product of carcass, guarantee product quality.
Embodiment 7
A kind of production method of the inflatable hollow tire of disposal molding, steps are as follows:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold 21 being mounted on lower mold 20 by mounting groove 201, upper mold 22 and lower mold 20 close
Mould；
Three, it injects: standing molding after flow-like sizing material after plasticizing is filled entire type chamber 200 by injection orifice；
Four, vulcanize: rubber product in type chamber 200 is vulcanized；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass 1, middle mold 21 is taken out from hatch frame 11；
Six, it sprays inner liner: by hatch frame 11, the airtight layer material being in a liquid state being coated to 10 wall surface of cavity structure
On, after 10 wall surface of cavity structure has coated, then the airtight layer material being in a liquid state is coated to 11 wall surface of hatch frame；
Seven, SC slow curing: the carcass 1 after the completion of step 6 is socketed on shaping loop, carries out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass 1 finished product: is removed from shaping loop.
The artificial method for smearing inner liner is to strut hatch frame 11, and the airtight layer material being in a liquid state is dipped by brush,
Brush is extend into cavity structure 10 by hatch frame 11, carries out the smearing of airtight layer material, and 10 wall surface of cavity structure is smeared
After the completion, then the smearing of airtight layer material on 11 wall surface of hatch frame is carried out；The method that nozzle sprays automatically is nozzle by opening
Mouth structure 11 is extend into cavity structure 10, is sprayed airtight layer material from spray-nozzle type sprinkler head by compressed air and is attached to cavity structure
10 wall surfaces, nozzle are circumferentially rotated along carcass, make uniformly to adhere to airtight layer material, cavity knot on one week 10 wall surface of cavity structure
After the completion of spraying on 10 wall surface of structure, airtight layer material is sprayed on 11 wall surface of hatch frame with nozzle.
The method that the present embodiment uses nozzle to spray automatically.
The production method of the inflatable hollow tire of the disposal molding of the present embodiment, by plasticizing, molding, injecting step,
Complete 1 structure of integrally formed carcass, the cavity structure 10 and hatch frame of carcass 1 have been obtained in the die cavity in set of molds 2
11 and 13 structure of valve cock mounting hole it is also molded, the die cavity in set of molds 2 keeps certain pressure and to 2 liter of set of molds at this time
Temperature reaches the curing temperature of carcass 1, the vulcanization of carcass 1 is completed after a certain period of time, at this point, the carcass 1 in 2 die cavity of set of molds is
The rubber structure of high-strength high-elasticity, die sinking, carcass 1 is taken out from set of molds 2, struts 1 inner ring face of carcass, mold in taking-up
21 to get hollow 1 structure of carcass is arrived, at this point, nozzle is extend into cavity structure 10 by hatch frame 11, by the gas of liquid
Close layer material is uniformly sprayed on the wall surface of cavity structure 10, the rotation of nozzle at the uniform velocity, along the circumferential direction of carcass 1 by nozzle
Airtight layer material will be sprayed on the wall surface of every place's cavity structure 10, finally forms one layer of inner liner on 10 wall surface of cavity structure
1,12 structure of inner liner of traditional 1 inner wall of carcass be by inner liner rubber compounding, be rolled into after film be adhered to it is hollow
On structure wall surface, using there is shear stresses between this obtained inner liner 12 of inner liner preparation process and carcass 1, easily make it
Delamination occurs between carcass 1, and is easily cracked under long-time stress, delamination and crackle will cause tubeless tyre
Gas leakage influences air-tightness, and stick operation is difficult to carry out, and the present embodiment utilizes the advantage of hatch frame 11, by inner liner sizing material
It is smelted into liquid state, is sprayed by nozzle, the stroke for operating easy realization and inner liner is more uniform, and liquid inner liner sizing material exists
10 surface of cavity structure is uniform curing, forms fine and close film layer, this combination be cross-linked by small molecule macromolecule at
Film combines, and combines closely between 12 film of inner liner and carcass 1, approximation is structure as a whole, and shear stress between the two is minimum, will not
Delamination occurs, the inner liner that inner liner sizing material of the same race is formed by curing by spraying is adhered to film is made into inner liner phase
Than the inner liner quality that spraying is formed after solidifying is lighter, dense film air-tightness is more preferable, and delamination, service life does not occur
It is longer, after having sprayed inner liner 12 on 10 wall surface of cavity structure, same operation is also carried out on hatch frame 11, in hatch frame 11
Two wall surfaces on spray inner liner 2 121, sprayed after-opening structure 11 and be closed by inner liner 121, be at this time socketed in carcass 1
On shaping loop, shaping loop is cylindrical body, and diameter is bigger by 1.5~5% than 1 inner ring diameter of carcass, by the inner ring of carcass 1 by carcass
1 is fixed on shaping loop side, so that the inner ring of carcass 1 is had stable shape, and two wall surfaces of hatch frame 11 are connected to inner liner 121
Pressure when structure is softened by inner ring only presses, and carries out low temperature SC slow curing to carcass 1 at this time, further promotes inner liner
12 with the adhesion effect of 1 contact surface of carcass, guarantee that inner liner 2 121 can be effectively closed by hatch frame 11.
Further the low temperature SC slow curing of the present embodiment will be socketed the shaping loop of carcass 1 60 using common process
1~2h is placed in the steam of~100 DEG C of sulfur monochloride.
Shaping loop is by the enlarged-diameter 1.5~5% of 1 inner ring of carcass, to 1 inner ring of carcass when enlarged degree is less than 1.5%
Support force is insufficient, and the inner liner 2 121 at hatch frame 11 can not effectively seal hatch frame 11, and enlarged degree is greater than 5%,
1 structure of carcass that inner ring can be destroyed, causes inner ring to deform.
The disposal molding of the present embodiment exempts from the production method for inflating hollow cushion tyre, injects vulcanization after primary molding,
The carcass 1 of molding integrated hollow structure can be directly obtained, simple process reduces production cost, and production is time-consuming short, raw
Produce high-efficient, and since the carcass of production 1 is integrated molding, uniformity, balance quality are high, and usage experience is good, safety
It can be high.
Embodiment 8
The production method of the inflatable hollow tire of the disposal molding of the present embodiment, does on the basis of embodiment 7 into one
Step is improved, and is vacuumized after step 2 molding, is in negative pressure state in type chamber 200；In clamping process, type chamber 200 is heated up to
150~200 DEG C.
Rubber mass can be easier injection and fill up mould when vacuum state in the die cavity of set of molds 2 is facilitated injecting step
Chamber passes through respectively internal equipped with heating jointly inside and outside heating device, the guarantee type chamber to heating outside set of molds 2 or upper/lower die
200 temperature everywhere reaches 150~200 DEG C, it is ensured that the rubber mass mobility for being injected into die cavity is enough, will not be pre-chilled and be bonded in
Injection orifice nearby influences the injection of rubber mass.
Further, when step 3 is injected, material temperature is 60~100 DEG C, 5~30s of injection time, after injection, standing 10~
30s。
Guarantee injection temperature between 60~100 DEG C, it is ensured that the mobility of rubber mass during injection, further, this reality
The injection time for applying example controls in 5~30s, prevents from injecting slow rubber mass and shifts to an earlier date shaping influence subsequent injections in die cavity,
10~30s is stood after injection, during this period the first one-step forming of tire.
Embodiment 9
The production method of the inflatable hollow tire of the disposal molding of the present embodiment, done on the basis of embodiment 7 and 8 into
One step is improved, and the coating method of airtight layer material includes that artificial smear sprays automatically with nozzle in step 6.
For 1 structure of carcass of the application, inner liner 12 can be carried out by the mode manually smeared and nozzle sprays automatically
Coating:
It is artificial to smear: to strut hatch frame 11, the airtight layer material being in a liquid state is dipped by brush, brush passes through opening knot
Structure 11 is extend into cavity structure 10, is carried out the smearing of airtight layer material, after the completion of 10 wall surface of cavity structure is smeared, then is opened
The smearing of airtight layer material on 11 wall surface of mouth structure；The method that nozzle sprays automatically, which is nozzle, extend into sky by hatch frame 11
In cavity configuration 10, airtight layer material is sprayed from spray-nozzle type sprinkler head by compressed air and is attached to 10 wall surface of cavity structure, nozzle along
Carcass circumferentially rotates, and makes uniformly to adhere to airtight layer material on one week 10 wall surface of cavity structure, spray on 10 wall surface of cavity structure
After the completion, airtight layer material is sprayed on 11 wall surface of hatch frame with nozzle；
Nozzle sprays automatically: nozzle is sprayed automatically there are two types of spraying method, a, extend into nozzle by hatch frame 11
In cavity structure 10, by the airtight layer material of liquid by nozzle, uniformly it is sprayed on the wall surface of cavity structure 10, nozzle is at the uniform velocity
Rotation, airtight layer material will be sprayed on the wall surface of every place's cavity structure 10 along the circumferential direction of carcass 1, in 10 wall of cavity structure
After forming one layer of inner liner 1 on face, nozzle sprays the close layer material of the enterprising promoting the circulation of qi of the wall surface of hatch frame 11；B, by carcass
1 in set of molds 2, upper mold 22 and the molding of lower mold 20, is not put into middle mold 21, and maintenance chamber 200 is constant pressure constant temperature item
Part at this time protrudes into nozzle from valve cock mounting hole 13, airtight layer material is at the uniform velocity sprayed into 1 inner hollow cavity of carcass, spray
After having blown, a period of time being stood under the conditions of constant temperature and pressure, then takes out carcass 1, nozzle at hatch frame 11 to supplementing
Spraying.
Artificial smearing method is at low cost, is not necessarily to special equipment, but coat less effective, the automatic spraying effect of nozzle is good, shape
At the more uniform densification of inner liner, but need used device cost, 1 structure of carcass of the application, different manufacturers can be with
According to the economic strength coating method different with cost budgeting flexible choice, guarantee the feasibility in actual production utilization.
Embodiment 10
The production method of the inflatable hollow tire of the disposal molding of the present embodiment, does on the basis of embodiment 7 into one
Step improve, the method for spraying inner liner automatically for nozzle, the inner liner sizing material being in a liquid state by 0.1~3.0MPa compressed gas
It is blown.
Using compressed air as power source, by nozzle, the blowing of liquid inner liner sizing material is entered into wall surface, blowing behaviour
Make convenient and efficient, according to the difference of tyre model difference and cavity shape, the compressed air of different pressure is selected to be blown, presses
Contracting gas pressure intensity cannot too small (be less than 0.1MPa), otherwise can not be successfully liquid inner liner sizing material is sufficiently blown it is each to wall surface
Place, is blown low efficiency, compressed gas pressure cannot excessive (be greater than 3.0MPa), pressure is excessive to cause injecting velocity too fast, liquid
Inner liner sizing material easily generates impact to the wall surface near valve cock, influences tyre performance, and be blown in the excessive influence tire of pressure
The uniformity of cavity pressure causes inner liner uniformity to be affected.
The present embodiment inner liner preparation step is divided into two stages: a), blowing: by compressed air by liquid air/tight layer rubber
To tire wall surface, blowing process continues 2.1~2.6min for material blowing；B), solidify: after the completion of the blowing stage, keeping tyre cavity
A period of time is stood under constant temperature and pressure, and the inner liner sizing material of blowing is made to be solidificated in 1 wall surface of carcass, solidification process continues 0.9~
2.2min。
The blowing time, too short will lead to form that inner liner thickness is excessively thin, and air-tightness is not up to standard, and blowing overlong time can waste
Material and to may cause local inner liner thickness excessive, influences tire used performance；Curing time is too short to will lead to air/tight layer rubber
Material fails sufficiently to be solidificated in 1 wall surface of carcass, so that the airtight layer film formed is not enough securely easily ruptured by pressure, solidifies
Overlong time will increase energy consumption and production time, and then increase production cost.
Embodiment 11
The production method of the inflatable hollow tire of the disposal molding of the present embodiment, does on the basis of embodiment 7 into one
Step is improved, and step 7 SC slow curing process carries out at a temperature of 60~100 DEG C, and the duration is 1~2h.
The temperature of SC slow curing is controlled at 60~100 DEG C, is lower than 60 DEG C of SC slow curing decreased effectiveness, airtight layer material and carcass 1
The adhesive force of wall surface is inadequate, is higher than 100 DEG C, and SC slow curing can make the performance of airtight layer material at a temperature of being higher than 100 DEG C for a long time
It reduces, to reduce the overall performance of carcass 1；The SC slow curing time cannot be less than 1h, inadequate less than 1h SC slow curing completeness, can deposit
The case where hatch frame 11 is not completely closed by inner liner 2 121, the SC slow curing time is greater than 2h, the performance meeting of airtight layer material
It reduces, to reduce the overall performance of carcass 1.
Embodiment 12
A kind of production method of the inflatable hollow tire of disposal molding, the tire that production diameter is 200mm, step is such as
Under:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold 21 being mounted on lower mold 20 by mounting groove 201, upper mold 22 and lower mold 20 close
Mould will vacuumize in type chamber 200 after molding, and be heated up to 150 DEG C；
Three, it injects: flow-like sizing material after plasticizing is filled by entire type chamber 200 by injection orifice, the material temperature of injection is 60 DEG C,
Injection time is 5s, and 10s molding is stood after the completion of injection；
Four, vulcanize: vulcanization 50s is carried out to rubber product in type chamber 200；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass 1, middle mold 21 is taken out from hatch frame 11；
Six, it sprays inner liner: airtight layer material nozzle is stretched in cavity structure 10 from hatch frame 11 to cavity
The airtight layer material that 10 wall spraying of structure is in a liquid state, after 10 wall spraying of cavity structure is complete, airtight layer material nozzle is to opening
The airtight layer material that 11 wall spraying of structure is in a liquid state, compressed gas pressure are 0.1MPa, and the blowing time is 2.1min, when solidification
Between be 0.9min；
Seven, the carcass 1 after the completion of step 6 SC slow curing: is socketed in the sizing that outer diameter is greater than 1 inner ring diameter 1.5% of carcass
1h is placed on circle in the steam of 60 DEG C of sulfur monochloride, carries out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass 1 finished product: is removed from shaping loop.
1 yield rate of carcass of production method production through the present embodiment is up to 96% or more, after sufficient gas not using 12 months
Tire pressure decline, phenomenon of not blowing out occurs.
Embodiment 13
A kind of production method of the hollow cushion tyre of disposal molding, the tire that production diameter is 560mm, steps are as follows:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold 21 being mounted on lower mold 20 by mounting groove 201, upper mold 22 and lower mold 20 close
Mould will vacuumize in type chamber 200 after molding, and be heated up to 175 DEG C；
Three, it injects: flow-like sizing material after plasticizing is filled by entire type chamber 200 by injection orifice, the material temperature of injection is 85 DEG C,
Injection time is 20s, and 20s molding is stood after the completion of injection；
Four, vulcanize: vulcanization 450s is carried out to rubber product in type chamber 200；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass 1, middle mold 21 is taken out from hatch frame 11；
Six, it sprays inner liner: airtight layer material nozzle is stretched in cavity structure 10 from hatch frame 11 to cavity
The airtight layer material that 10 wall spraying of structure is in a liquid state, after 10 wall spraying of cavity structure is complete, airtight layer material nozzle is to opening
The airtight layer material that 11 wall spraying of structure is in a liquid state, compressed gas pressure are 2.5MPa, and the blowing time is 2.4min, when solidification
Between be 1.8min；
Seven, the carcass 1 after the completion of step 6 SC slow curing: is socketed in the shaping loop that outer diameter is greater than 1 inner ring diameter 3% of carcass
On place 1.5h in the steam of 85 DEG C of sulfur monochloride, carry out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass 1 finished product: is removed from shaping loop.
1 yield rate of carcass of production method production through the present embodiment is up to 95% or more, after sufficient gas not using 12 months
Tire pressure decline, phenomenon of not blowing out occurs.
Embodiment 14
A kind of production method of the hollow cushion tyre of disposal molding, the tire that production diameter is 700mm, steps are as follows:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold 21 being mounted on lower mold 20 by mounting groove 201, upper mold 22 and lower mold 20 close
Mould will vacuumize in type chamber 200 after molding, and be heated up to 200 DEG C；
Three, it injects: flow-like sizing material after plasticizing being filled by entire type chamber 200 by injection orifice, the material temperature of injection is 100
DEG C, injection time 30s stands 30s molding after the completion of injection；
Four, vulcanize: vulcanization 800s is carried out to rubber product in type chamber 200；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass 1, middle mold 21 is taken out from hatch frame 11；
Six, it sprays inner liner: airtight layer material nozzle is stretched in cavity structure 10 from hatch frame 11 to cavity
The airtight layer material that 10 wall spraying of structure is in a liquid state, after 10 wall spraying of cavity structure is complete, airtight layer material nozzle is to opening
The airtight layer material that 11 wall spraying of structure is in a liquid state, compressed gas pressure are 3.0MPa, and the blowing time is 2.6min, when solidification
Between be 2.2min；
Seven, the carcass 1 after the completion of step 6 SC slow curing: is socketed in the shaping loop that outer diameter is greater than 1 inner ring diameter 5% of carcass
On place 2h in the steam of 100 DEG C of sulfur monochloride, carry out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass 1 finished product: is removed from shaping loop.
1 yield rate of carcass of production method production through the present embodiment is up to 95% or more, after sufficient gas not using 12 months
Tire pressure decline, phenomenon of not blowing out occurs.
Example of the present invention is only that preferred embodiments of the present invention will be described, not to present inventive concept and
Range is defined, and under the premise of not departing from design philosophy of the present invention, this field engineers and technicians are to technology of the invention
The various changes and improvements that scheme is made should all fall into protection scope of the present invention.
Claims (10)
1. a kind of inflatable hollow tire of one-pass molding, including carcass (1), which is characterized in that further include:
Cavity structure (10) is circumferentially opened in carcass (1) inside, forms hollow chamber inside carcass (1)；
Hatch frame (11), for the groove that is circumferentially opened on carcass (1) inner ring face, hatch frame (11) is by cavity structure
(10) it is in communication with the outside；
Inner liner (12), the inner liner one (120) by being formed in cavity structure (10) surface are closed with by hatch frame (11)
Inner liner two (121) constitute；And
Valve cock mounting hole (13) is opened in carcass (1) side, and cavity structure (10) is connected to carcass (1).
2. the inflatable hollow tire of a kind of one-pass molding according to claim 1, it is characterised in that: the hatch frame
(11) opening width r is gradually increased from cavity structure (10) to carcass (1) inner ring direction.
3. the inflatable hollow tire of a kind of one-pass molding according to claim 1, it is characterised in that: the hatch frame
(11) opening width r is gradually reduced from cavity structure (10) to carcass (1) inner ring direction.
4. the inflatable hollow tire of a kind of one-pass molding according to any one of claims 1 to 3, it is characterised in that: institute
Carcass (1) one-pass molding in set of molds (2) is stated to form.
5. the inflatable hollow tire of a kind of one-pass molding according to claim 4, which is characterized in that the set of molds (2)
Include:
Lower mold (20) offers type chamber (200) on land area, type chamber (200) shape and half of carcass (1) shape
Shape matches, and is raised upward on type chamber (200) wall surface equipped with valve cock mould (201), valve cock mould (201) shape with
Valve cock mounting hole (13) shape matches；
Middle mold (21) is made of interior cavity mold (210) and opening mould (211), and the interior cavity mold (210) is shape and the sky
The ring structure body that cavity configuration (10) shape matches, the opening mould (211) are shape and the hatch frame (11) shape
The ring segment to match, the opening mould (211) are fixedly connected on the inside of the interior cavity mold (210)；The middle mold (21) is set
It is intermediate in lower mold (20) and upper mold (22)；
Upper mold (22), structure match with the lower mold (20), and symmetrical expression is set to above the lower mold (20)；
Injection orifice is the through-hole for being provided with the lower mold (20) or upper mold (22) side wall and being connected to the type chamber (200).
6. the inflatable hollow tire of a kind of one-pass molding according to claim 5, it is characterised in that: the lower mold (20)
Annular offers mounting groove (201) on land area on the inside of type chamber (200), the shape of the mounting groove (201) and the middle mould
Opening mould (211) shape of tool (21) matches；Upper mold (22) the land area corresponding position offers identical mounting groove
(201)。
7. a kind of production method of the inflatable hollow tire of disposal molding, which is characterized in that steps are as follows:
One, it is plasticized: rubber grain is plasticized as flow-like sizing material；
Two, it molds: middle mold (21) being mounted on lower mold (20) by mounting groove (201), upper mold (22) and lower mold
(20) it molds；
Three, it injects: flow-like sizing material after plasticizing being filled by entire type chamber (200) by injection orifice and stands molding afterwards；
Four, vulcanize: type chamber (200) interior rubber product is vulcanized；
Five, it is opened: being opened after the completion of vulcanization, take out molding carcass (1), middle mold (21) is taken from hatch frame (11)
Out；
Six, it sprays inner liner: by hatch frame (11), the airtight layer material being in a liquid state being coated to cavity structure (10) wall surface
On, after cavity structure (10) wall surface has coated, then the airtight layer material being in a liquid state is coated to hatch frame (11) wall surface；
Seven, SC slow curing: the carcass (1) after the completion of step 6 is socketed on shaping loop, carries out the operation of low temperature SC slow curing；
Eight, after SC slow curing operates, carcass 1 finished product: is removed from shaping loop.
8. a kind of production method of the inflatable hollow tire of disposal molding according to claim 7, it is characterised in that: step
It is vacuumized after rapid two molding, is in negative pressure state in type chamber (200)；In clamping process, 150 is heated up to type chamber (200)~
200℃。
9. a kind of production method of the inflatable hollow tire of disposal molding according to claim 7, it is characterised in that: step
The coating method of airtight layer material includes that artificial smear sprays automatically with nozzle in rapid six.
10. a kind of production method of the inflatable hollow tire of disposal molding according to claim 7, it is characterised in that:
Step 7 SC slow curing process carries out at a temperature of 60~100 DEG C, and the duration is 1~2h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924858.XA CN110509584A (en) | 2019-09-27 | 2019-09-27 | A kind of inflatable hollow tire of one-pass molding and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924858.XA CN110509584A (en) | 2019-09-27 | 2019-09-27 | A kind of inflatable hollow tire of one-pass molding and preparation method thereof |
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| CN110509584A true CN110509584A (en) | 2019-11-29 |
Family
ID=68632677
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391577A (en) * | 2020-05-13 | 2020-07-10 | 四川远星橡胶有限责任公司 | Inflatable maintenance-free tire |
| CN112721228A (en) * | 2020-12-11 | 2021-04-30 | 宁波豌豆动力科技有限公司 | Preparation process of damping tire |
| CN113183391A (en) * | 2020-01-14 | 2021-07-30 | 明门瑞士股份有限公司 | Mold for forming hollow foam tire and method for manufacturing hollow foam tire |
-
2019
- 2019-09-27 CN CN201910924858.XA patent/CN110509584A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183391A (en) * | 2020-01-14 | 2021-07-30 | 明门瑞士股份有限公司 | Mold for forming hollow foam tire and method for manufacturing hollow foam tire |
| CN113183391B (en) * | 2020-01-14 | 2023-05-26 | 明门瑞士股份有限公司 | Mold for forming hollow foam tire and method for manufacturing hollow foam tire |
| CN111391577A (en) * | 2020-05-13 | 2020-07-10 | 四川远星橡胶有限责任公司 | Inflatable maintenance-free tire |
| CN112721228A (en) * | 2020-12-11 | 2021-04-30 | 宁波豌豆动力科技有限公司 | Preparation process of damping tire |
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Application publication date: 20191129 |
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| WW01 | Invention patent application withdrawn after publication |