CN209063412U - A kind of hollow tyre mould core and the hollow tire based on mold core - Google Patents
A kind of hollow tyre mould core and the hollow tire based on mold core Download PDFInfo
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- CN209063412U CN209063412U CN201821666373.2U CN201821666373U CN209063412U CN 209063412 U CN209063412 U CN 209063412U CN 201821666373 U CN201821666373 U CN 201821666373U CN 209063412 U CN209063412 U CN 209063412U
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- 229920001971 elastomer Polymers 0.000 description 38
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of hollow tyre mould core and the hollow tire based on mold core, belong to hollow tire technology field.The hollow tyre mould core of the utility model, including mold core plates and in the symmetrically arranged upper mold core in mold core plates upper/lower terminal face, lower mold core；Shapes and sizes after upper mold core and lower mold core are fit are consistent with the inner cavity of hollow tire.The hollow tire of the utility model, including circular carcass and hollow inner cavity；Inner cavity is circumferentially provided with tyre framework；Tyre framework is in fat arch, wheat head shape, propeller shape or intersection grid-shaped etc..Be around tyre framework it is sealed, on the one hand effectively avoid being also easy to produce biggish air drag in its driving process, on the other hand effectively avoid wherein easily accumulating the impurity such as various stones, sludge and be difficult to clean and easily partially throw away during running at high speed and cause danger.The utility model can be integrated by the injection moulding of hollow tire, hollow and vulcanization plant, reduces the cost of hollow tire production.
Description
Technical field
The utility model belongs to rubber product technology field, specifically, being related to a kind of hollow tyre mould core and base
In the hollow tire of mold core.
Background technique
In the non-inflatable tyre product of the prior art, generally at least there are two types of systems for the materials of tire, and one is with SBS
(styrene series thermoplastic elastomer) and SEBS (using polystyrene as end segment, the Ethylene/Butylene that is obtained with polybutadiene plus hydrogen
Copolymer be intermediate elastic block linear tri-block copolymer) raw material plastics physico " crystallization " system (rub and visit bicycle,
Tire as shown in Figure 1, hole are vertical hole)；One is using high molecular materials such as PU (polyurethane), RB (rubber) as the change of raw material
Reaction method " crosslinking " system (hello bicycle, tire cross-section as shown in Figure 2, hole are horizontal annular hole), two kinds of systems are equal
It can be injection moulded with melt injection technique.
Although two kinds of systems are all widely applied, all have the shortcomings that corresponding:
SBS the and SEBS material price of the first system is high, and chance high temperature easily softens and wearability is poor；
In second of system, the molding of tire is first to be injected into strip semi-finished product in a mold, and hole can only be straight hole,
Then it after being truncated further according to corresponding specification, is transferred in sulfurizing mould and is vulcanized, molding and vulcanization will be separated and be carried out, although material
Advantage of lower cost, but high process cost are expected, moreover, since there is hole in inside, sulfidation is difficult to ensure in sulfidation
Uniformly, finished product dynamic balancing effect is poor for entire semi-finished product vulcanization, and after vulcanization, intrapore high pressure gas is also easy to fast in die sinking
Speed is expanded and is exploded, and is caused hole thin-walled to rupture and is become waste product, in technical process, rejection rate is higher；It should also be noted that,
Vulcanization is carried out in dedicated vulcanization machine, need to be pressurizeed again, be heated to rubber product, consumes energy, is time-consuming, at high cost, being rubber product
The big disadvantage of the one of technique.
There is also same defects for both the above system: hole is distributed in the different places in portion in or beyond tire, such
Structure causes tire pressure-bearing size uneven, so that tire has different stress points, thus cause the dynamic balancing of tire uneven,
User can experience and jolt, and comfort level is bad.And hole can be generated with the extension for using the time, and under the effect of the pressure
The phenomenon that collapsing, so as to shorten the service life of tire.
Moreover, in the non-inflatable tyre product of the prior art, if it is as shown in Fig. 1,3,4, the support frame of carcass is
On the one hand non-closed structure is deposited although shape is relatively beautiful and is also easy to produce biggish air drag, another party in the process of moving
Face is easy to shelter evil people and countenance evil practices when by muddy road surface or prolonged use inside carcass, and be not easily cleaned influences its beauty instead
Effect, while easily partially throwing away and satisfying the need artificial at danger during running at high speed.
Through retrieving, Chinese patent publication No. CN105599214A, publication date 2016.05.25, denomination of invention: one kind is exempted to fill
The integrally formed pressure injection method of air filled tyre, comprising the following steps: 1) configured non-inflatable tyre manufacture raw material is put into material stock
Case, and stir evenly；2) pre- Hot-pressed injector is to 180 DEG C -190 DEG C；3) press injector pressure is promoted to 50Pa-60Pa；4) adjust into
Material speed is 10m/s-20m/s；5) dwell time is adjusted to 2min-3min；6) non-inflatable tyre in step 1) is manufactured former
Material is injected into press injector, according to preset mode initiating task；7) it successively after molding, injection, hot melt, cooling, die sinking, obtains
Non-inflatable tyre.The simple process is operated conveniently without repeatedly processing, at low cost；Non-inflatable tyre structure obtained is uniform
Rationally, without point of Tire & Tube, the frictional force and resistance between Tire & Tube are eliminated.But the material TPE's of invention application is resistance to
Hot to be not so good as rubber, as the temperature rises and physical property declines by a big margin, thus the scope of application is restricted.Meanwhile it compressing and becoming
It is poor that shape, elastic recovery, durability are equal to rubber phase, and similar rubber is also often higher than in price.
Utility model content
1. utility model technical problems to be solved
It wears no resistance for the above non-inflatable tyre existing in the prior art, secondary operation cost of manufacture is high, comfort level
Difference and do not allow the technical problems such as easy to clean, the utility model provides a kind of hollow tyre mould core and the hollow wheel based on mold core
Tire.The utility model can be integrated by the injection moulding of hollow tire, hollow and vulcanization plant, reduces hollow tire
Cost, the molding time of production, and reduce energy consumption, moreover it is possible to eliminate during hollow tire production fare between each process
With.
2. technical solution
To solve the above problems, the utility model adopts the following technical solution:
A kind of hollow tyre mould core, including mold core plates and in the symmetrically arranged upper mold core in mold core plates upper/lower terminal face, lower die
Core；Shapes and sizes after the upper mold core and lower mold core are fit are consistent with the inner cavity of hollow tire.Upper mold core and lower mold core are first
Hollow tire is divided into two halves, reaches hollow technical effect, furthermore, it is possible to be fitted according to the concrete shape of hollow tire
It is designed with formula.
Further hollow tyre mould core scheme, at the mold core plates in upper mold core and lower mold core, during outwardly convex to be formed
The mold core ring convex of gas passage in empty tire can reserve the gas passage of annular, such as at the annular center of hollow tire
When the hollow tire of fruit needs to inflate, the inner cavity of hollow tire is connected to by gas passage.
A kind of hollow tire based on hollow tyre mould core, including circular carcass and hollow inner cavity；The inner cavity edge
Circumferential direction is provided with tyre framework；The tyre framework is in fat arch, wheat head shape, propeller shape or intersects grid-shaped etc.,
With after zoarium upper mold core and lower mold core shape it is consistent.The tyre framework of respective shapes is needed to configure according to different car bodies, with
Improve its versatility, moreover, be around tyre framework it is sealed, on the one hand effectively avoid being also easy to produce in its driving process it is biggish
On the other hand air drag effectively avoids wherein easily accumulating the impurity such as various stones, sludge and is difficult to clean and process of running at high speed
In easily partially throw away and cause danger.
Further hollow tire scheme, is along the circumferential direction communicated with circular gas passage in the middle part of tyre framework, and
The reserved inflating port communicated with inner cavity, chooses whether to inflate as needed, to improve the comfort level of driver and conductor on the inside of carcass.
A kind of production method of hollow tire, completed in a die cavity of hollow and sulfurization forming apparatus injection, it is hollow and
Vulcanization process, the die cavity include upper mold half, lower mold half and hollow tyre mould core, and hollow tyre mould core is the hollow of die cavity
Lay the foundation, have after hollow be filled with vulcanize required for high temperature and high pressure gas condition, and then will injection moulding, it is hollow with
And vulcanization plant is integrated, avoids heat losses caused by each process circulation in the prior art and process circulation cost, solves
The pressurization again of traditional hollow tyre production technology, heating, energy consumption, time-consuming, at high cost one big disadvantage.
Further production method, specific steps are as follows:
Step 1: rubber is plasticized: rubber grain being plasticized in plasticizing injection screw, the flow-like sizing material after plasticizing is being moulded
Material is intracavitary temporary, and plasticization temperature is 60~100 DEG C under normal circumstances, and is kept the temperature；
Step 2: molding: upper mold half, lower mold half close up into die cavity, and hollow tyre mould core indwelling is several in die cavity
At what center；In clamping process, it can be heated up to 130~180 DEG C to die cavity, the outer wall of upper mold half, lower mold half can be passed through
Increase heater to achieve the goal, guarantees the cures requirements of hollow tyre semi-finished products；
Step 3: injection: the intracavitary sizing material of plasticizing material is injected into hollow and is sulfided by the injector by injecting pedestal
The die cavity of type device, and formed full of being stood after die cavity；
Step 4: die sinking: opening die cavity, upper mold half, the lower mold half of half of hollow tyre semi-finished products will be included respectively
It separates, takes out hollow tyre mould core；
Step 5: secondary mould closing: upper mold half, the lower mold half of including half of hollow tyre semi-finished products respectively is secondary
Close up to form die cavity, after hollow tyre mould core is taken away, hollow inside tires are hollow in hollow tyre mould core shape；
Step 6: gas injection: being filled with high temperature and high pressure gas in the hollow inside of hollow tire, be allowed to have conditions of vulcanization；
Step 7: vulcanization: the hollow tire in die cavity is vulcanized；
Step 8: pressure release: by the high temperature and high pressure gas pressure release of the hollow inside of hollow tire, hollow tire after die sinking is avoided
Explosion；
Step 9: twice-die-opening: membrane cavity is opened, hollow tire is taken out.
Further embodiment is vacuumized after step 2 molding, is in negative pressure state in membrane cavity, is facilitated the injection of sizing material.
Further embodiment, when step 3 is injected, material temperature is 60~100 DEG C, 5~30s of injection time, after injection, stands 5
~50s is selected accordingly according to the requirement of hollow tire specification or shape.
Further embodiment, after step 4 takes out hollow tyre mould core, in such a way that air-cooled and/or water cooling combines,
Hollow tyre mould core temperature is controlled at 60~100 DEG C, prevents hollow tyre mould core temperature is excessively high from causing and hollow tyre mould core
The hollow inner rubber of the hollow tire directly contacted vulcanizes in advance, or even incipient scorch occurs.
Further embodiment, the pressure of step 6 high temperature and high pressure gas are 10~50kg, and temperature is 130~180 DEG C, according to
The requirement of hollow tire specification or shape is selected accordingly.
Further embodiment, the time of step 7 vulcanization is 100~2000s, according to wanting for hollow tire specification or shape
It asks and is selected accordingly.
The shape of further embodiment, upper mold half and lower mold half is adapted with the shape of hollow tire, upper mold half
Shape with lower mold half is half of tire shape of horizontality；The shape of hollow tyre mould core and the hollow knot of hollow tire
Structure is adapted, such as the mold core of grille-like, and the hollow structure of hollow tire is also grid-like.
Further embodiment, die cavity are fixed seat in the plane；The injection pedestal is movable seat in the plane；Activity seat in the plane correspondence is more
A fixed seat in the plane, and moved back and forth between each fixed seat in the plane.Since vulcanization time is relatively long, injection time is relatively
It is short, it can be configured accordingly according to the multiple proportion the time required to the two technique, further increase productivity, and avoid infusing
Sizing material in shooting cylinder screw rod vulcanizes in advance in standing waiting.
Further embodiment, rubber grain are the reclaimed rubber or rubber composition of crosslinkable scrap rubber, and waste is again
It is utilized, production cost substantially reduces.
3. beneficial effect
Compared with prior art, the utility model has the following obvious advantages:
(1) the hollow tyre mould core of the utility model and the hollow tire based on mold core can complete note in a mold
It penetrates, is hollow, sulfidation, can effectively solve secondary pressurization again, heating during hollow tire production, cause energy consumption, consumption
When, problem at high cost, to reduce the cost of hollow tire, molding time, reduce energy consumption, and hollow tire process can be eliminated
Between shipping expense；It furthermore reduces reheating bring noxious gas emission, environmental-friendly, reheating is reduced
The rejection rate of the hollow tire of bring reduces reheating pressurization bring energy consumption, has achieved the effect that environmental protection and energy saving；
(2) the hollow tyre mould core of the utility model and the hollow tire based on mold core, can be according to the difference of hollow tire
Technique requirement, technological parameter needed for adjusting: injection pressure, injection temperature, vulcanization gas source temperature, vulcanization time reach product most
Good effect；
(3) the hollow tyre mould core of the utility model and the hollow tire based on mold core, movable seat in the plane corresponds to multiple fixations
Seat in the plane, and moved back and forth between each fixed seat in the plane, in the sulfidation of hollow tire, also successively carry out different vulcanization dresses
The injection work set, greatly improves work efficiency；
(4) the hollow tyre mould core of the utility model and the hollow tire based on mold core, hollow tire obtained are heat-resisting, resistance to
It grinds, is weather-proof, moreover, same die cavity produces, quality is stablized, and dynamic balancing even results are good；
(5) production method of the utility model can continue production free of discontinuities, production efficiency and high degree of automation；
(6) skeleton of the hollow tire of the utility model and carcass front and back inner wall are connected to form an entirety, rise to carcass
To support rebound effect, the tyre framework of respective shapes can be needed to configure according to different car bodies, to improve its versatility, and
And around tyre framework be it is sealed, on the one hand effectively avoid being also easy to produce biggish air drag, another party in its driving process
Face effectively avoids wherein easily accumulating the impurity such as various stones, sludge and is difficult to clean and easily partially throws away and make during running at high speed
At danger；
(7) it is along the circumferential direction communicated with circular gas passage in the middle part of the tyre framework of the hollow tire of the utility model,
And the inflating port communicated with inner cavity is reserved on the inside of carcass, gas is full of entire carcass inner space, enhancing by gas passage
The elasticity of tire entirety, can choose whether to inflate, as needed to improve the comfort level of driver and conductor.
Detailed description of the invention
Fig. 1 is the plastics system tire perspective view of the prior art；
Fig. 2 is the rubbery system tire cross-section figure of the prior art；
Fig. 3 to 4 is the non-inflatable tyre outside drawing of the prior art；
Fig. 5 is the structural schematic diagram of the hollow and sulfurization forming apparatus of the utility model；
Fig. 6 is the perspective view of the hollow tyre mould core of the utility model；
Fig. 7 is the sectional view of the hollow tyre mould core of the utility model；
Fig. 8 is the/bottom view of bowing of the hollow tyre mould core of the utility model；
Fig. 9 is the horizontal cross of the hollow tire of the utility model embodiment 3；
Figure 10 is the vertical cross-sectional of the hollow tire of the utility model embodiment 3；
Figure 11 is the horizontal cross of the hollow tire of the utility model embodiment 4；
Figure 12 is the horizontal cross of the hollow tire of the utility model embodiment 5；
Figure 13 is the horizontal cross of the hollow tire of the utility model embodiment 6.
In figure: 1, hollow and sulfurization forming apparatus；2, hollow tyre mould core；3, hollow tire；21, mold core plates；22, upper mold
Core；23, lower mold core；24, mold core ring convex；31, carcass；32, tyre framework；33, inner cavity；34, gas passage；35, inflating port.
Specific embodiment
For the content for further appreciating that the utility model, this utility model is described in detail in conjunction with attached drawing.
Embodiment 1
The hollow tyre mould core 2 of the present embodiment, in the die cavity applied to hollow and sulfurization forming apparatus 1 as shown in Figure 5,
As shown in Fig. 6,7,8, including rectangular mold core plates 21 and in the symmetrically arranged circular upper mold core in 21 upper/lower terminal face of mold core plates
22, lower mold core 23；Shapes and sizes after 23 zoarium of the upper mold core 22 and lower mold core are interior with hollow tire 3 as shown in Figure 9
Chamber 33 is consistent.
The hollow tire 3 of the present embodiment based on the above hollow tyre mould core 2 includes circular carcass as shown in Figures 9 and 10
31 and hollow inner cavity 33；The inner cavity 33 is circumferentially provided with tyre framework 32；The tyre framework 32 can be in wine
Bucket arch, wheat head shape, propeller shape intersect grid-shaped etc., are concatenated fat arch in the present embodiment, and upper after zoarium
Mold core 22 is consistent with the concatenated fat arcuate in shape of lower mold core 23.Respective shapes can be needed to configure according to different car bodies
Tyre framework 32, to improve its versatility, moreover, be around tyre framework 32 it is sealed, on the one hand effectively it is avoided to run over
It is also easy to produce biggish air drag in journey, on the other hand effectively avoids wherein easily accumulating the impurity such as various stones, sludge and be difficult to clearly
It is easily partially thrown away during washing and running at high speed and causes passerby dangerous.
The production method of the hollow tire 3 of the present embodiment completes note in hollow and sulfurization forming apparatus 1 a die cavity
It penetrates, hollow and vulcanization process, die cavity includes upper mold half, lower mold half and hollow tyre mould core 2, and note is completed in same die cavity
It penetrates, hollow and vulcanization process, the die cavity includes upper mold half, lower mold half and mold core, and hollow tyre mould core 2 is in die cavity
Sky lays the foundation, and has the condition for being filled with and vulcanizing required high temperature and high pressure gas after hollow, and then will be injection moulded, is hollow
And vulcanization plant is integrated, avoids heat losses caused by each process circulation in the prior art and process circulation cost, solution
It has determined pressurization again, the heating of traditional hollow tyre production technology, energy consumption, time-consuming, at high cost one big disadvantage.
Embodiment 2
Hollow 2 basic structure of tyre mould core of the present embodiment is different and the improvement is that with embodiment 1: such as Fig. 7 institute
Show, at the mold core plates 21 in upper mold core 22 and lower mold core 23, outwardly convex has the mould for the gas passage 33 to be formed in hollow wheel tire 3
Core ring convex 24；
The hollow tire 3 of the present embodiment based on the above hollow tyre mould core 2, mold core ring convex 24 can be in hollow tire 3
Annular center at reserve annular gas passage 34 will be hollow by gas passage 34 if hollow tire 3 needs to inflate
The inner cavity 33 of tire 3 is connected to.
The production method of the hollow tire 3 of the present embodiment, specific steps are as follows:
Step 1: rubber is plasticized: rubber grain being plasticized in plasticizing injection screw, the flow-like sizing material after plasticizing is being moulded
Material is intracavitary temporary, and plasticization temperature is 60~100 DEG C under normal circumstances, it is therefore an objective to make gum fluid, facilitate subsequent injection
It projects, and keeps the temperature, it can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half close up into die cavity, and hollow 2 indwelling of tyre mould core is several in die cavity
At what center, in clamping process, it can be heated up to 130~180 DEG C to die cavity, the outer wall of upper mold half, lower mold half can be passed through
Increase heater to achieve the goal, guarantees the cures requirements of hollow 3 semi-finished product of tire；
Step 3: injection: the intracavitary sizing material of plasticizing material is injected into hollow and is sulfided by the injector by injecting pedestal
The die cavity of type device 1, material temperature are 60~100 DEG C, 5~30s of injection time, and are formed full of standing after die cavity, standing 5~
50s is selected accordingly according to the requirement of hollow 3 specification of tire or shape；
Step 4: die sinking: opening die cavity, include upper mold half, the lower mold half point of half of hollow 3 semi-finished product of tire respectively
It opens, after taking out hollow tyre mould core 2, the air-cooled mode combined with water cooling can be used, the control of hollow 2 temperature of tyre mould core is existed
It 60~100 DEG C, prevents in the excessively high hollow tire for causing directly to contact with hollow tyre mould core 2 of hollow 2 temperature of tyre mould core
Empty inner rubber vulcanizes in advance, or even incipient scorch occurs；
Step 5: secondary mould closing: by the upper mold half for including half of hollow tire respectively, lower mold half it is secondary close up to be formed
Die cavity, after hollow tyre mould core 2 is taken away, in the hollow of hollow 2 shape of tyre mould core inside hollow 3 semi-finished product of tire；
Step 6: gas injection: it is filled with high temperature and high pressure gas in the hollow inside of hollow tire 3, is allowed to have conditions of vulcanization, it is high
The pressure of warm high pressure gas is 10~50kg, and temperature is 130~180 DEG C, is carried out according to the requirement of hollow 3 specification of tire or shape
Corresponding selection；
Step 7: vulcanization: vulcanizing 3 semi-finished product of hollow tire in die cavity, and the time is 100~2000s, in
The requirement of empty 3 specification of tire or shape is selected accordingly；
Step 8: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, after avoiding die sinking, hollow hollow tire 3 is quick-fried
It is fried；
Step 9: twice-die-opening: membrane cavity is opened, hollow hollow tire 3 is taken out.
Embodiment 3
The hollow tyre mould core 2 of the present embodiment and the basic structure of the hollow tire 3 based on mold core are different with embodiment 2
With the improvement is that: the upper surface edge of the mold core plates 21 of hollow tyre mould core 2 is provided with locating slot, can facilitate upper mold section
Positioning when tool, lower mold half and hollow tyre mould core 2 mold.
The hollow tire 3 and tire production method of the present embodiment, basic step produce as shown in Figure 9 interior with embodiment 2
Chamber is concatenated fat arch separate space shape tire, diameter 200mm, specific steps are as follows:
Step 1: rubber is plasticized: the reclaimed rubber particle of crosslinkable scrap rubber being plasticized in plasticizing injection screw, is moulded
Flow-like sizing material after change is intracavitary temporary in plasticizing material, and plasticization temperature is 60 DEG C, it is therefore an objective to make gum fluid, facilitate subsequent
Injection is projected, and is kept the temperature, can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half and hollow tyre mould core 2 close up into die cavity, upper mold half and lower half
The shape of mold is half of tire shape of horizontality, and the upper mold core 22 of hollow tyre mould core 2 and lower mold core 23 is stayed
It is placed at die cavity geometric center, the shape and inner cavity after upper mold core 22 and the molding of lower mold core 23 are fat arch separate space shape tire phase
Adaptation is concatenated fat arch；In clamping process, pays attention to the conjunction slot of locating slot, avoid misplacing, and die cavity can be heated up to
130 DEG C, heater can be increased by the outer wall of upper mold half, lower mold half to achieve the goal, guarantee that the vulcanization of hollow tire 3 is wanted
It asks；
Step 3: injection: the intracavitary sizing material of plasticizing material is injected into hollow and is sulfided by the injector by injecting pedestal
The die cavity of type device 1, material temperature are 60 DEG C, injection time 5s, and full of molding is stood after die cavity, stand 5s；
Step 4: die sinking: opening die cavity, include upper mold half, the lower mold half point of half of hollow 3 semi-finished product of tire respectively
It opens, takes out hollow tyre mould core 2, after taking-up, air-cooled mode can be used, hollow 2 temperature of tyre mould core is controlled at 60 DEG C, is prevented
Only the excessively high hollow inner rubber for leading to the hollow tire 3 directly contacted with hollow tyre mould core 2 of hollow 2 temperature of tyre mould core mentions
Preceding vulcanization, or even there is incipient scorch；
Step 5: secondary mould closing: upper mold half, the lower mold half of including half of hollow 3 semi-finished product of tire respectively is secondary
Close up to form die cavity, after hollow tyre mould core 2 is taken away, in the hollow of fat arch separate space shape inside hollow tire 3；
Step 6: gas injection: being filled with high temperature and high pressure gas inside the fat arch separate space of hollow tire 3, be allowed to have sulphur
Change condition, the pressure of high temperature and high pressure gas are 10kg, and temperature is 130 DEG C；
Step 7: vulcanization: 3 semi-finished product of hollow tire in die cavity are vulcanized, time 100s；
Step 8: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, fat arch separate space after die sinking is avoided to explode；
Step 9: twice-die-opening: open membrane cavity, take out diameter be 200mm hollow fat arch separate space shape tire at
Product 3.
Embodiment 4
The hollow tyre mould core 2 of the present embodiment and the basic structure of the hollow tire 3 based on mold core are different with embodiment 3
With the improvement is that: helically paddle shape, the tyre framework 32 of production are also in the shape after 23 zoarium of upper mold core 22 and lower mold core
Propeller shape, producing inner cavity as shown in figure 11 is propeller shape separate space shape tire, diameter 410mm, specific steps are as follows:
Step 1: rubber is plasticized: the reclaimed rubber particle of crosslinkable scrap rubber being plasticized in plasticizing injection screw, is moulded
Flow-like sizing material after change is intracavitary temporary in plasticizing material, and plasticization temperature is 70 DEG C, it is therefore an objective to make gum fluid, facilitate subsequent
Injection is projected, and is kept the temperature, can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half close up into die cavity, and the shape of upper mold half and lower mold half is
Half of tire shape of horizontality, and by hollow 2 indwelling of tyre mould core at die cavity geometric center, hollow tyre mould core 2
Upper mold core 22 and 23 shape of lower mold core are adapted with inner cavity for propeller separate space shape tire；In clamping process, die cavity can be added
Temperature can increase heater by the outer wall of upper mold half, lower mold half to achieve the goal, guarantee hollow tyre vulcanization to 150 DEG C
It is required that；
Step 3: vacuumizing: being vacuumized to the die cavity of molding, be in negative pressure state in membrane cavity, facilitate the injection of sizing material；
Step 4: injection: plasticizing is expected that intracavitary sizing material is injected into die cavity, material temperature 70 by the injector by injecting pedestal
DEG C, injection time 13s, and full of molding is stood after die cavity, stand 20s；
Step 5: die sinking: opening die cavity, upper mold half, the lower mold half for including half of hollow tire respectively are separated, take out
After taking-up, the mode of water cooling is can be used in hollow tyre mould core 2, and hollow 2 temperature of tyre mould core is controlled at 70 DEG C, is prevented hollow
The excessively high hollow inner rubber for leading to the hollow tire directly contacted with hollow tyre mould core 2 of 2 temperature of tire mold core vulcanizes in advance,
Even there is incipient scorch；
Step 6: secondary mould closing: by the upper mold half for including half of hollow tire respectively, lower mold half it is secondary close up to be formed
Die cavity, after hollow tyre mould core 2 is taken away, helically paddle shape separate space shape is hollow inside hollow tire 3；
Step 7: gas injection: being filled with high temperature and high pressure gas inside the propeller shape separate space of hollow tire 3, be allowed to have sulphur
Change condition, the pressure of high temperature and high pressure gas are 12kg, and temperature is 150 DEG C；
Step 8: vulcanization: the hollow tire in die cavity is vulcanized, time 400s；
Step 9: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, die sinking rear screw shaft shape separate space explosion is avoided；
Step 10: twice-die-opening: open membrane cavity, take out diameter be 410mm hollow propeller shape separate space shape tire at
Product.
Embodiment 5
The hollow tyre mould core 2 of the present embodiment and the basic structure of the hollow tire 3 based on mold core are different with embodiment 3
With the improvement is that: in wheat head shape, the tyre framework 32 of production is also in wheat for shape after 23 zoarium of upper mold core 22 and lower mold core
Fringe shape, producing inner cavity as shown in figure 12 is wheat head shape separate space shape tire, diameter 560mm, specific steps are as follows:
Step 1: rubber is plasticized: the reclaimed rubber particle of crosslinkable scrap rubber being plasticized in plasticizing injection screw, is moulded
Flow-like sizing material after change is intracavitary temporary in plasticizing material, and plasticization temperature is 80 DEG C, it is therefore an objective to make gum fluid, facilitate subsequent
Injection is projected, and is kept the temperature, can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half close up into die cavity, and the shape of upper mold half and lower mold half is
Half of tire shape of horizontality, and by hollow 2 indwelling of tyre mould core at die cavity geometric center, hollow tyre mould core 2
Shape is that wheat head shape separate space shape tire is adapted with inner cavity, is the hollow tyre mould core 2 of wheat head shape barrier shape；In clamping process,
It can be heated up to 160 DEG C to die cavity, heater can be increased by the outer wall of upper mold half, lower mold half to achieve the goal, guaranteed
Hollow tire cures requirements；
Step 3: vacuumizing: being vacuumized to the die cavity of molding, be in negative pressure state in membrane cavity, facilitate the injection of sizing material；
Step 4: injection: plasticizing is expected that intracavitary sizing material is injected into die cavity, material temperature 80 by the injector by injecting pedestal
DEG C, injection time 21s, and full of molding is stood after die cavity, stand 35s；
Step 5: die sinking: opening die cavity, upper mold half, the lower mold half for including half of hollow tire respectively are separated, take out
After taking-up, the mode of water cooling and air-cooled combination is can be used in hollow tyre mould core 2, and hollow 2 temperature of tyre mould core is controlled 80
DEG C, prevent the hollow internal rubber of the excessively high hollow tire for causing directly to contact with hollow tyre mould core 2 of hollow 2 temperature of tyre mould core
Glue vulcanizes in advance, or even incipient scorch occurs；
Step 6: secondary mould closing: by the upper mold half for including half of hollow tire respectively, lower mold half it is secondary close up to be formed
Die cavity, after hollow tyre mould core 2 is taken away, in the hollow of wheat head shape separate space shape inside hollow tire 3；
Step 7: gas injection: being filled with high temperature and high pressure gas inside the wheat head shape separate space of the hollow tire 3 of grid, be allowed to have sulphur
Change condition, the pressure of high temperature and high pressure gas are 22kg, and temperature is 160 DEG C；
Step 8: vulcanization: the hollow tire in die cavity is vulcanized, time 800s；
Step 9: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, wheat head shape separate space after die sinking is avoided to explode；
Step 10: twice-die-opening: opening membrane cavity, takes out the hollow wheat head shape separate space shape tire finished product that diameter is 560mm.
Embodiment 6
The hollow tyre mould core 2 of the present embodiment and the basic structure of the hollow tire 3 based on mold core are different with embodiment 3
With the improvement is that: shape after 23 zoarium of upper mold core 22 and lower mold core is in intersecting grid-shaped, the tyre framework 32 of production
In grid-shaped is intersected, inner cavity is to intersect grid separate space shape tire, diameter 660mm, specific steps as shown in fig. 13 that for production are as follows:
Step 1: rubber plasticizing moulds the rubber composition rubber grain of crosslinkable scrap rubber in plasticizing injection screw
Change, the flow-like sizing material after plasticizing is intracavitary temporary in plasticizing material, and plasticization temperature is 100 DEG C, it is therefore an objective to make gum fluid, it is convenient
Subsequent injection is projected, and is kept the temperature, can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half and the hollow tyre mould core 2 of sulfurization forming apparatus 1 close up into mould
The shape of chamber, upper mold half and lower mold half is half of tire shape of horizontality, and by hollow 2 indwelling of tyre mould core in
At die cavity geometric center, the shape of hollow tyre mould core 2 is to intersect grid separate space shape tire to be adapted with inner cavity, to intersect grid
The hollow tyre mould core 2 of barrier shape；In clamping process, it can be heated up to 180 DEG C to die cavity, upper mold half, female die can be passed through
The outer wall of tool increases heater and guarantees hollow tire cures requirements to achieve the goal；
Step 3: vacuumizing: being vacuumized to the die cavity of molding, be in negative pressure state in membrane cavity, facilitate the injection of sizing material；
Step 4: injection: plasticizing is expected that intracavitary sizing material is injected into die cavity by the injector by injecting pedestal, and material temperature is
100 DEG C, injection time 30s, and full of molding is stood after die cavity, stand 50s；
Step 5: die sinking: opening die cavity, upper mold half, the lower mold half for including half of hollow tire 3 respectively are separated, take
After taking-up, the mode of water cooling and air-cooled combination is can be used in hollow tyre mould core 2 out, and the control of hollow 2 temperature of tyre mould core is existed
100 DEG C, prevent the hollow interior of the excessively high hollow tire for causing directly to contact with hollow tyre mould core 2 of hollow 2 temperature of tyre mould core
Portion's rubber vulcanizes in advance, or even incipient scorch occurs；
Step 6: secondary mould closing: closing up shape for upper mold half, the lower mold half of including half of hollow tire 3 respectively are secondary
At die cavity, after hollow tyre mould core 2 is taken away, hollow inside tires are hollow in intersection grid separate space shape；
Step 7: gas injection: being filled with high temperature and high pressure gas inside the lateral V separate space of hollow tire 3, be allowed to have vulcanization item
Part, the pressure of high temperature and high pressure gas are 50kg, and temperature is 180 DEG C；
Step 8: vulcanization: the hollow tire in die cavity is vulcanized, time 1000s；
Step 9: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, intersect the explosion of grid separate space after avoiding die sinking；
Step 10: twice-die-opening: open membrane cavity, take out diameter be 660mm hollow intersection grid separate space shape tire at
Product.
Embodiment 7
The hollow tire 3 and tire production method of the present embodiment, basic step produce as shown in Figure 9 interior with embodiment 3
Chamber is concatenated fat arch separate space shape tire, diameter 700mm, specific steps are as follows:
Step 1: rubber is plasticized: the reclaimed rubber particle of crosslinkable scrap rubber being plasticized in plasticizing injection screw, is moulded
Flow-like sizing material after change is intracavitary temporary in plasticizing material, and plasticization temperature is 100 DEG C, it is therefore an objective to make gum fluid, facilitate subsequent
Injection project, and keep the temperature, can be by being kept the temperature in the ring wall internal heater of plasticizing material chamber；
Step 2: molding: upper mold half, lower mold half and hollow tyre mould core 2 close up into die cavity, upper mold half and lower half
The shape of mold is half of tire shape of horizontality, and the upper mold core 22 of hollow tyre mould core 2 and lower mold core 23 is stayed
It is placed at die cavity geometric center, the shape and inner cavity after upper mold core 22 and the molding of lower mold core 23 are fat arch separate space shape tire phase
Adaptation is concatenated fat arch；In clamping process, pays attention to the conjunction slot of locating slot, avoid misplacing, and die cavity can be heated up to
180 DEG C, heater can be increased by the outer wall of upper mold half, lower mold half to achieve the goal, guarantee that the vulcanization of hollow tire 3 is wanted
It asks；
Step 3: vacuumizing: being vacuumized to the die cavity of molding, be in negative pressure state in membrane cavity, facilitate the injection of sizing material；
Step 4: injection: the intracavitary sizing material of plasticizing material is injected into hollow and is sulfided by the injector by injecting pedestal
The die cavity of type device 1, material temperature are 100 DEG C, injection time 25s, and full of molding is stood after die cavity, stand 40s；
Step 5: die sinking: opening die cavity, include upper mold half, the lower mold half point of half of hollow 3 semi-finished product of tire respectively
It opens, takes out hollow tyre mould core 2, after taking-up, air-cooled mode can be used, hollow 2 temperature of tyre mould core is controlled at 60 DEG C, is prevented
Only the excessively high hollow inner rubber for leading to the hollow tire 3 directly contacted with hollow tyre mould core 2 of hollow 2 temperature of tyre mould core mentions
Preceding vulcanization, or even there is incipient scorch；
Step 6: secondary mould closing: upper mold half, the lower mold half of including half of hollow 3 semi-finished product of tire respectively is secondary
Close up to form die cavity, after hollow tyre mould core 2 is taken away, in the hollow of fat arch separate space shape inside hollow tire 3；
Step 7: gas injection: being filled with high temperature and high pressure gas inside the fat arch separate space of hollow tire 3, be allowed to have sulphur
Change condition, the pressure of high temperature and high pressure gas are 50kg, and temperature is 180 DEG C；
Step 8: vulcanization: 3 semi-finished product of hollow tire in die cavity are vulcanized, time 1000s；
Step 9: pressure release: by the high temperature and high pressure gas pressure release of hollow inside, fat arch separate space after die sinking is avoided to explode；
Step 10: twice-die-opening: open membrane cavity, take out diameter be 700mm hollow fat arch separate space shape tire at
Product 3.
In the present embodiment, die cavity can also be set to fixed seat in the plane；The injection pedestal is movable seat in the plane；The activity
Seat in the plane corresponds to multiple fixed seats in the plane, and moves back and forth between each fixed seat in the plane.Since vulcanization time is relatively long, 1000s,
Injection time is relatively short, 30s, can theoretically be configured according to the multiple proportion the time required to the two technique i.e. 33 times, but
Need to remove the traveling time of movable seat in the plane, traveling time 30s is then more appropriate with the proportional arrangement of 1:16.It can mention significantly
High production rate, and the sizing material of injection barrel screw rod is avoided to vulcanize in advance in standing waiting.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without departing from the spirit of the invention, not inventively design with should
The similar frame mode of technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of hollow tyre mould core, which is characterized in that symmetrical including mold core plates (21) and in mold core plates (21) upper/lower terminal face
Upper mold core (22), the lower mold core (23) of setting；Shapes and sizes after the upper mold core (22) and lower mold core (23) are fit are in
The inner cavity (33) of empty tire (3) is consistent.
2. hollow tyre mould core as described in claim 1, which is characterized in that in the upper mold core (22) and lower mold core (23)
At mold core plates (21), outwardly convex has the mold core ring convex (24) for the gas passage (34) to be formed in hollow wheel tire (3).
3. a kind of hollow tire based on hollow tyre mould core as claimed in claim 1 or 2, which is characterized in that including circular tire
Body (31) and hollow inner cavity (33)；The inner cavity (33) is circumferentially provided with tyre framework (32)；The tyre framework
(32) in the upper mold core (22) and lower mold core (23) shape after fat arch, wheat head shape, propeller shape or intersection grid-shaped, with zoarium
Shape is consistent.
4. hollow tire as claimed in claim 3, which is characterized in that be along the circumferential direction connected in the middle part of the tyre framework (32)
Have circular gas passage (34), and the reserved inflating port (35) communicated with inner cavity (33) on the inside of carcass (31).
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| CN201821666373.2U CN209063412U (en) | 2018-10-15 | 2018-10-15 | A kind of hollow tyre mould core and the hollow tire based on mold core |
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| CN201821666373.2U CN209063412U (en) | 2018-10-15 | 2018-10-15 | A kind of hollow tyre mould core and the hollow tire based on mold core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318438A (en) * | 2018-10-15 | 2019-02-12 | 安徽世界村新材料有限公司 | A kind of hollow tyre mould core and hollow tire and tire production method based on mold core |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318438A (en) * | 2018-10-15 | 2019-02-12 | 安徽世界村新材料有限公司 | A kind of hollow tyre mould core and hollow tire and tire production method based on mold core |
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