CN111775633A - Tire with cavity support frame structure and machining method thereof - Google Patents
Tire with cavity support frame structure and machining method thereof Download PDFInfo
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- CN111775633A CN111775633A CN202010675343.3A CN202010675343A CN111775633A CN 111775633 A CN111775633 A CN 111775633A CN 202010675343 A CN202010675343 A CN 202010675343A CN 111775633 A CN111775633 A CN 111775633A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000003754 machining Methods 0.000 title description 2
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000003672 processing method Methods 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000002775 capsule Substances 0.000 claims description 7
- 239000008358 core component Substances 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000005728 strengthening Methods 0.000 abstract description 5
- 238000004513 sizing Methods 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 description 14
- 230000003993 interaction Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000737 periodic effect Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 206010011732 Cyst Diseases 0.000 description 2
- 208000031513 cyst Diseases 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0003—Discharging moulded articles from the mould
- B29C37/0017—Discharging moulded articles from the mould by stripping articles from mould cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a tire with a cavity support frame structure and a processing method thereof, and belongs to the technical field of tires. According to the cavity support frame structure tire and the processing method thereof, after mold closing, the front end of the middle mold core member is aligned with the mold-outlet through holes reserved on the inner side walls of the upper mold and the lower mold, then rubber materials are injected, after the injection is finished, the middle mold core member is inserted into the tire carcass to form a bladder cavity, and the middle mold core can be contracted without opening the mold, so that the problem of uneven pressure of tire sizing materials in the traditional injection process is solved, and energy consumption caused by mold opening and closing is avoided; each bag chamber presents the looks at inside tire matrix and leaves mutually or tangent or crossing distribution and form cavity support frame structure, cavity support frame structure vertical projection is the spring ring structure that the bag chamber links to each other to play and have the effect of strengthening tire structural strength and the buffer capacity that improves the tire matrix concurrently, further save the power consumption of riding.
Description
Technical Field
The invention relates to the technical field of tires, in particular to a tire with a cavity support frame structure and a processing method thereof.
Background
Since the advent of rubber, rubber tires have gone through a parallel progression of solid tires-pneumatic tires-non-pneumatic tires and pneumatic tires. The shared single vehicle which is created in 2014, mixed war in 2016 and shuffled in 2017 is increased explosively due to the fact that the problem that the user pain points of short-distance vehicle driving, long walking, inconvenient storage and taking of the traditional vehicle pile and the bicycle, GPS positioning, convenient code scanning and vehicle taking and the like are solved; after a single vehicle and an automobile are shared, another vehicle, namely a shared electric vehicle, is catalyzed in the era of shared operation, the shared electric vehicle is officially released in 2017 in a campus, a scenic spot and the like which are tested in 2016, and the development speed of the shared electric vehicle is severely restricted by the problems of excessive speed of the electric vehicle, insufficient parking space, difficult management of batteries and riding and the like in the development process of 2018 government supervision and development processes. Meanwhile, the traditional pneumatic tire is applied to a shared bicycle, a shared electric vehicle and the like to cause very difficult maintenance, and the novel non-pneumatic tire solves the defect just and is widely applied, so that the development of the non-pneumatic tire is greatly promoted.
The non-pneumatic tire adopts a structural damping design, is generally a transverse honeycomb perforated or longitudinal multi-hollow structure, and is manufactured by a one-step molding process of the whole tire which is made of one material. Unlike an automobile tire, the weight of each layer of material is different for a multi-layer design. The general non-pneumatic tire takes into consideration that indexes of various aspects of the tire, such as pressure resistance, wear resistance, heat resistance, skid resistance, heat resistance and the like, meet requirements, the tire is made to be relatively hard, so that the comfort of the tire is greatly sacrificed, especially compared with the pneumatic tire, the difference is large, so that the use experience of a user is poor, the non-pneumatic tire cannot be selected, and the main reason why the non-pneumatic tire cannot be popularized and applied in a large scale is also provided. If want to improve the problem of comfort level, generally can be to avoiding pneumatic tire to do than softer, can cause the heavy burden to reduce like this, wear-resisting relatively poor, easy fracture, life reduces, and pneumatic tire's weight is heavier generally simultaneously, can increase the weight of whole car to the energy consumption of vehicle has been increased, the continuation of the journey mileage of reduction vehicle.
Through search, Chinese patent publication numbers are: CN105599214A, published date: 2016, 5 and 25 days, the invention name: an injection molding method for integrally molding a non-pneumatic tire comprises the following steps: 1) putting the prepared non-pneumatic tire manufacturing raw materials into a storage box, and uniformly stirring; 2) preheating a hot-pressing injection machine to 180-190 ℃; 3) the pressure of the injection molding machine is increased to 50-60 Pa; 4) adjusting the feeding speed to be 10m/s-20 m/s; 5) adjusting the pressure maintaining time to 2-3 min; 6) injecting the raw materials for manufacturing the non-pneumatic tire in the step 1) into a pressure injection machine, and starting operation according to a preset mode; 7) and (3) obtaining the non-pneumatic tire after mold assembly, injection, hot melting, cooling and mold opening in sequence. The process is simple, does not need to be processed for many times, is convenient to operate and has low cost; the obtained inflation-free tire has uniform and reasonable structure, no inner tire and outer tire, and eliminates the friction and resistance between the inner tire and the outer tire. However, the TPE material used in the present invention is inferior in heat resistance to rubber, and the physical properties thereof are greatly deteriorated with an increase in temperature, so that the range of application is limited. Meanwhile, the rubber has poor compression deformation, elastic recovery, durability and the like, and the price is higher than that of the rubber of the same type.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the problems that the strength performance and the comfort of the non-pneumatic tire in the prior art cannot be considered simultaneously, the invention provides the tire with the cavity support frame structure and the processing method thereof.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a tire with a cavity support frame structure comprises a tire body, wherein the tire body comprises a tire body outer circumferential surface and a tire body inner circumferential surface, and mold core telescopic through holes are formed in the tire body inner circumferential surface in the radial direction at equal intervals along the circumferential direction; the corresponding position of each mold core telescopic through hole is in a bladder cavity is radially formed in the tire carcass, and the bladder cavity is in a cavity support frame structure formed in the tire carcass, so that the weight of the tire is reduced, materials are saved, the damping and buffering capacity is improved, and the riding comfort is enhanced.
According to the further technical scheme, adjacent bladder cavities formed in the tire body are separated or tangent or intersected; when adjacent bladder cavities are separated from each other, the bladder cavities form periodic regular interval type relatively independent cavity support frame structures in the tire body, the bladder cavities are independent from each other in a normal state, the interaction is small, and the mutual interaction between the bladder cavities is small during riding, so that the weight of the tire is reduced, the material is saved, and the riding comfort of the tire is improved to a certain extent; when adjacent bag cavities are tangent, the bag cavities form a periodic regular point contact type cavity supporting frame structure in the tire body, the bag cavities are independent in a normal state, the bag cavities interact clearly during riding, the weight of the tire can be reduced, stress on the bag cavities can be equally divided, the strength of the tire body is increased, and the riding load capacity of the tire is enhanced; when adjacent each sac cavity is intersected, the sac cavities are in a mutually communicated cavity supporting frame structure formed inside the tire carcass, the sac cavities are communicated with each other in a normal state, and the sac cavities are communicated with each other to form a whole body in a penetrating and integrating mode during riding, so that the effect of supporting the inside of the tire carcass is achieved, and the structural strength of the tire is higher.
Further technical scheme, cavity support frame structure vertical projection is the spring ring structure that the bag chamber links to each other, each adjacent bag chamber UNICOM each other, each spring ring structure annular is connected, form the cavity support frame structure similar to the spring form, it supports the buffering and the whole atress of cavity and supports the buffering state of combining together to present the independent atress of bag chamber, therefore, not only can play the effect of strengthening tire structural strength, can also improve the buffer capacity of tire matrix, the reinforcing travelling comfort of riding, tire shock-absorbing capacity simultaneously, the travelling comfort of riding improves greatly, the matrix quality alleviates greatly, the inside thermal diffusivity of cavity strengthens greatly.
According to the further technical scheme, tire body filling parts are arranged between all air bags in the tire body of the tire, and the tire body filling parts between every two adjacent air bags form elastic supporting members to support the gap parts between all the air bags so as to ensure that the stress between all the air bags is dispersed while the structural strength of the tire is improved.
According to the technical scheme, the mold core stretching through hole and the middle mold core member of the tire forming mold are made of rigid metal materials, when the outer diameter of the mold core stretching through hole is smaller than the maximum outer diameter of the bladder cavity, the outer diameter of the mold core stretching through hole of the tire forming mold is smaller than the maximum outer diameter of the middle mold core member, and the middle mold core member cannot be inserted into the mold core stretching through hole of the tire forming mold, so that the outer diameter of the mold core stretching through hole is required to be larger than or equal to the maximum outer diameter of the bladder cavity, and the head end of the middle mold core member is easy to pull out from the mold core stretching through.
A method for processing a tire with a cavity supporting frame structure comprises the following steps:
step one, die assembly: closing an upper die and a lower die of the tire forming die to form a die cavity formed by combining an upper die cavity and a lower die cavity; mold stripping through holes which are distributed at equal intervals are reserved in the circumferential direction of the inner side walls of the upper mold and the lower mold after the upper mold and the lower mold are combined;
step two, installing a mold core: putting the mold core into the middle part of the inner ring of the forming mold in advance, wherein middle mold core members in the mold core are distributed in the circumferential direction and extend out of the middle mold core members, so that the tail ends of the middle mold core members are aligned with the reserved mold-outlet through holes on the inner side walls of the upper mold and the lower mold;
step three, injection: inserting one end of an injection pipe into a mold cavity of a tire molding mold, then injecting a rubber material, and keeping constant pressure for 5-60 s to ensure full filling and filling;
step four, inserting a mold core: when a signal that rubber is filled completely is received, turning over a middle mold core member, wherein the head end of the middle mold core member extends out and penetrates through a mold outlet through hole, and then inserting the middle mold core member into a tire carcass along a direction vertical to the inner circumferential surface of the tire carcass, so that a carcass filling part in the tire carcass is extruded by the middle mold core member, and a bladder cavity is formed;
step five, vulcanization molding: vulcanizing the tire body in the forming mold, wherein the middle mold core member is still arranged in the tire body in the vulcanizing process, so that the energy consumption generated by mold opening, mold core taking and placing is reduced, and the dimensional tolerance of the accuracy of a bladder cavity is avoided during the vulcanizing reaction; the mold cores are distributed at equal intervals along the circumferential direction of the tire body, and the outer ends of the mold cores are arranged on the outer side of the inner circumferential surface of the tire body, so that the subsequent taking-out process is facilitated;
step six, taking out the mold core: the contact part of the middle mold core member and the inner peripheral surface of the tire body forms a mold core telescopic through hole, the mold core is contracted, the head end of the middle mold core member is contracted back into the mold core along the axial direction of the mold core telescopic through hole, and the tire body is made of elastic rubber materials, so that the tire body is easy to pull out from the mold core telescopic through hole;
step seven, demolding: and opening the upper mold cavity and the lower mold cavity, dismantling the upper mold and the lower mold, and taking out the tire.
According to the further technical scheme, in the fourth step, the head end of the middle mold core member is sequentially inserted into the tire carcass from one end of an injection pipe close to the tire molding mold, so that the problem of uneven pressure in a mold cavity generated during rubber material injection is solved to a certain extent; and can ensure that all the capsule cavities are communicated with each other to form a whole.
According to the technical scheme, the horizontal plane projection shape of the single middle die core member is U-shaped, so that a spring ring structure connected with the U-shaped can be formed, and the effect of reinforcing the structural strength of the tire is achieved.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the tire with the cavity support frame structure and the processing method thereof, the injection, vulcanization and molding processes can be completed in one mold, and in the molding process, the middle mold core member can enter and exit the tire carcass in a non-mold opening mode, so that the energy consumption generated by mold opening and mold core taking out is reduced, the dimensional tolerance of the bladder cavity during the vulcanization reaction is avoided, the production process is greatly simplified, and the production efficiency and the yield are improved;
(2) the invention relates to a tire with a cavity support frame structure and a processing method thereof.A tire body is internally provided with adjacent bag cavities which are separated or tangent or intersected; when adjacent bladder cavities are separated from each other, the bladder cavities form periodic regular interval type relatively independent cavity support frame structures in the tire body, the bladder cavities are independent from each other in a normal state, the interaction is small, and the interaction between the bladder cavities is small during riding, so that the weight of the tire is reduced, the material is saved, and the riding comfort of the tire is improved to a certain extent; when adjacent bag cavities are tangent, the bag cavities form a periodic regular point contact type cavity supporting frame structure in the tire body, the bag cavities are independent in a normal state, the bag cavities interact clearly during riding, the weight of the tire can be reduced, stress on the bag cavities can be equally divided, the strength of the tire body is increased, and the riding load capacity of the tire is enhanced; when adjacent bag cavities are intersected, the bag cavities form a mutually communicated cavity support frame structure in the tire body, the bag cavities are mutually communicated under a normal state, and the bag cavities are communicated and integrally formed into a whole when the bicycle is ridden, so that the effect of supporting the interior of the tire body is achieved, and the structural strength of the tire is higher;
(3) according to the cavity support frame structure tire and the processing method thereof, the bladder cavities are mutually communicated to form a support frame structure, so that the weight is reduced, the material is saved, the buffering capacity is improved, and the riding comfort is enhanced; the inner part of the tire body of the tire can be supported, so that the structural strength of the tire is ensured;
(4) according to the cavity support frame structure tire and the processing method thereof, the vertical projection of the cavity support frame structure is a spring ring structure with connected air bags, the adjacent air bags are communicated with each other, and the spring ring structures are annularly connected to form a support frame structure similar to a spring, so that the effect of strengthening the structural strength of the tire can be achieved, the buffering capacity of a tire body can be improved, and the riding comfort is enhanced;
(5) according to the tire with the cavity support frame structure and the processing method thereof, the elastic support member is formed at the tire body filling part between every two adjacent bag cavities to support the gap part between every two bag cavities, so that the stress between every two bag cavities is dispersed while the structural strength of the tire is improved;
(6) according to the cavity support frame structure tire and the processing method thereof, the prepared communicated bag cavity structure tire not only can play a role in reinforcing the structural strength of the tire, but also can improve the buffering capacity of a tire body and enhance the riding comfort, so that the problems of strength performance, comfort and the like of the inflation-free tire are balanced;
(7) according to the tire with the cavity support frame structure and the processing method thereof, the outer diameter of the mold core telescopic through hole is larger than or equal to the maximum outer diameter of the bladder cavity, so that after the head end of the middle mold core member is inserted into a tire body to form the bladder cavity, the head end of the middle mold core member is easy to pull out from the mold core telescopic through hole;
(8) the invention relates to a tire with a cavity support frame structure and a processing method thereof.A mold core is put into the middle part of an inner ring of a forming mold in advance after mold closing, so that the front ends of forming sections which are distributed in the circumferential direction in the mold core are aligned with mold stripping through holes reserved on the inner side walls of an upper mold and a lower mold, rubber materials are injected into a mold cavity of the tire forming mold, the mold core is started after the injection is finished, the front end of a middle mold core member extends out and passes through the mold stripping through holes, and then the middle mold core member is sequentially inserted into a tire carcass along the direction vertical to the inner peripheral surface of the tire carcass, and because the head end of the middle mold core member is sequentially inserted into the tire carcass from one end of an injection pipe close to the; and the capsule cavities can be ensured to be communicated with each other to form a whole, and the forming mode has a simple structure and is convenient to operate, so that the production efficiency is effectively improved, and the energy consumption is reduced.
Drawings
FIG. 1 is a schematic view of the tire structure of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of the tire with a separated bladder cavity of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross sectional view of the tire with the communicating chamber;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural view of a tire building mold of the present invention;
FIG. 7 is a schematic diagram of the upper and lower mold cavities of the tire forming mold of the present invention;
fig. 8 is a schematic view of a middle mold core member of the present invention.
In the figure: 1-a tyre carcass; 2-the capsular cavity; 3-a tire forming mold; 4-injection tube; 5-middle mould core component; 11-carcass peripheral surface; 12-carcass filling; 13-inner circumferential surface of carcass; 21-a mold core telescopic through hole; 22-a resilient support member; 23-a spring ring structure; 31-upper die; 32-lower die; 33-upper mold cavity; 34-lower mold cavity; 35-demolding through holes; 51-head end of middle mold core component; 52-middle mold core piece tail end.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
Example 1
The tire with the cavity support frame structure of the embodiment comprises a tire body 1, as shown in fig. 1, wherein the tire body 1 comprises a tire body outer circumferential surface 11 and a tire body inner circumferential surface 13, and mold core telescopic through holes 21 are formed in the tire body inner circumferential surface 13 along the circumferential direction at equal intervals in the radial direction; as shown in fig. 2, a bladder cavity 2 is radially arranged inside the tire carcass 1 corresponding to each mold core telescopic through hole 21, so that the weight is reduced, the material is saved, the buffering capacity is improved, and the riding comfort is enhanced; the bag cavity 2 forms a cavity support frame structure inside the tire carcass 1, so that the function of supporting the inside of the tire carcass 1 is achieved, and the structural strength of the tire is guaranteed.
Example 2
The basic structure of the tire with the cavity supporting frame structure in the embodiment is the same as that in embodiment 1, and the differences and improvements are as follows: as shown in fig. 2-5, adjacent bag cavities 2 formed in the tire body 1 are separated or tangent or intersected; when adjacent bag cavities 2 are separated from each other, the bag cavities 2 form a periodic regular interval type relatively independent cavity support frame structure in the tire carcass 1, the bag cavities 2 are mutually independent and have small interaction in a normal state, and the bag cavities 2 have small interaction in riding, so that the weight of the tire is reduced, the material is saved, and the riding comfort of the tire is improved to a certain degree; when adjacent bag cavities 2 are tangent, the bag cavities 2 form periodic regular point contact type cavity supporting frame structures in the tire carcass 1, the bag cavities 2 are mutually independent in a normal state, and when the tire is ridden, the bag cavities 2 are mutually clearly interacted, so that the weight of the tire can be reduced, and the stress on each bag cavity 2 can be equally divided, so that the strength of the tire carcass 1 is increased, and the riding load capacity of the tire is enhanced; when adjacent bag cavities 2 are intersected, the bag cavities 2 form a mutually communicated cavity supporting frame structure in the tire carcass 1, the bag cavities 2 are mutually communicated in a normal state, and when the bicycle is ridden, the bag cavities 2 are communicated and integrally formed into a whole, so that the effect of supporting the interior of the tire carcass 1 is achieved, and the structural strength of the tire is ensured to be higher;
in this embodiment, a contact part of the mold core for molding the bladder cavity 2 and the inner circumferential surface 13 of the tire body forms a mold core telescopic through hole 21, the mold core can be taken out along the mold core telescopic through hole 21, and the tire body 1 is made of elastic rubber, so that the mold core is easy to pull out from the mold core telescopic through hole 21; the prepared communicated bag cavity structure tire not only can play a role in reinforcing the structural strength of the tire, but also can improve the buffering capacity of a tire body and enhance the riding comfort, thereby balancing the problems of strength performance, comfort and the like of the inflation-free tire.
Example 3
The basic structure of the tire with the cavity supporting frame structure in the embodiment is the same as that in the embodiment 2, and the differences and improvements are as follows: as shown in fig. 2-3, the vertical projection of the cavity support frame structure is a spring ring structure 23 formed by connecting the bladder cavities 2, the adjacent bladder cavities 2 are communicated with each other, the spring ring structures 23 are annularly connected to form a spring-like cavity support frame structure, and a state that the independent stress support buffering of the bladder cavities 2 is combined with the integral stress support buffering of the cavity is presented, so that the tire support frame structure not only can play a role in enhancing the structural strength of the tire, but also can improve the buffering capacity of the tire body 1 and enhance the riding comfort, meanwhile, the tire buffering performance and the riding comfort are greatly improved, the tire body quality is greatly reduced, and the heat dissipation performance in the cavity is greatly enhanced; the cavity structure of the sac cavity 2 keeps smooth, and stress concentration points are eliminated to the maximum extent; therefore, the effect of strengthening the structural strength of the tire can be achieved, the buffering capacity of the tire body 1 can be improved, and the riding comfort is enhanced.
Example 4
The basic structure of the tire with the cavity supporting frame structure in the embodiment is the same as that in the embodiment 3, and the differences and improvements are as follows: as shown in fig. 2, a carcass filling portion 12 is provided between each bladder cavity 2 inside the tire carcass 1, and the carcass filling portion 12 between two adjacent bladder cavities 2 forms an elastic support member 22 to support the gap portion between each bladder cavity 2, so as to ensure that the structural strength of the tire is improved while the stress between each bladder cavity 2 is dispersed, and the structural strength of the tire is enhanced under the condition that the size of the bladder cavity 2 is enlarged as much as possible, thereby improving the buffering capacity of the tire carcass 1.
Example 5
The basic structure of the tire with the cavity supporting frame structure in the embodiment is the same as that in the embodiment 4, and the differences and improvements are as follows: for small tires (6-9 inches in size), such as balance vehicle tires and scooter tires, the number of the bladder cavities 2 formed in the tire body 1 is 15-18; for medium-sized tires (with the size of 9-16 inches), such as tires of bicycles and electric vehicles, the number of the bladder cavities 2 formed in the tire body 1 is 22-26; for a large tire (the size is 16-22 inches), such as a motor vehicle tire, the number of the bladder cavities 2 formed in the tire body 1 is 28-32; so as to ensure that the bladder cavities 2 are communicated with each other to form a whole, thereby enhancing the structural strength of the tire; the tire carcass 1 is made of rubber and has elasticity, so that mold stripping through holes 35 which are distributed at equal intervals are reserved at the head end 51 of the middle mold core member along the circumferential direction of the inner side wall of the tire forming mold 3 and are coaxially inserted into the tire carcass 1, thereby forming a mold core telescopic through hole 21 on the inner circumferential surface 13 of the tire carcass and forming a bag cavity 2 in the tire carcass 1; because the through hole 35 of the tire forming mold 3 and the middle mold core member 5 are both made of rigid metal materials, when the outer diameter of the mold core telescopic through hole 21 is smaller than the maximum outer diameter of the bladder cavity 2, that is, the outer diameter of the through hole 35 of the tire forming mold 3 is smaller than the maximum outer diameter of the middle mold core member 5, the middle mold core member 5 cannot be inserted into the through hole 35 of the tire forming mold 3, and therefore, the outer diameter of the mold core telescopic through hole 21 is required to be larger than or equal to the maximum outer diameter of the bladder cavity 2, so that the head end 51 of the middle mold core member is easy to be pulled out of the mold core telescopic through hole 21.
Example 6
The basic structure of the tire with a cavity supporting frame structure and the processing method thereof in the embodiment is the same as that in the embodiment 5, and the differences and improvements are as follows: the method comprises the following steps:
step one, die assembly: closing the upper mold 31 and the lower mold 32 of the tire forming mold 3 to form a cavity in which the upper cavity 33 and the lower cavity 34 are combined; after the upper die 31 and the lower die 32 are combined, mold-stripping through holes 35 which are distributed at equal intervals are reserved in the circumferential direction of the inner side walls of the upper die and the lower die;
step two, installing a mold core: putting the mold core into the middle part of the inner ring of the tire forming mold 3 in advance, wherein the middle mold core members 5 in the mold core are distributed in the circumferential direction and extend out of the middle mold core members 5, so that the tail end 52 of each middle mold core member is aligned with the mold stripping through holes 35 reserved on the inner side walls of the upper mold and the lower mold;
step three, injection: inserting one end of an injection pipe 4 into a mold cavity of a tire molding mold 3, then injecting a rubber material, and keeping constant pressure for 5-60 s to ensure full filling and filling;
step four, inserting a mold core: after receiving a signal that rubber is filled completely, turning over a middle mold core member 5, wherein a head end 51 of the middle mold core member extends out and penetrates through a mold outlet through hole 35, and then inserting the middle mold core member into the tire carcass 1 along a direction perpendicular to the inner circumferential surface 13 of the tire carcass, so that a carcass filling part 12 in the tire carcass 1 is extruded by the middle mold core member 5, and a bladder cavity 2 is formed;
step five, vulcanization molding: vulcanizing the tire carcass 1 in the forming mold, wherein a middle mold core member is still arranged in the tire carcass 1 in the vulcanizing process, so that the energy consumption generated by mold opening, mold core taking and placing is reduced, and the dimensional tolerance of the precision of the bladder cavity 2 is avoided during the vulcanizing reaction; the mold cores are distributed at equal intervals along the circumferential direction of the tire body 1, and the outer ends of the mold cores are arranged on the outer side of the inner circumferential surface 13 of the tire body, so that the subsequent taking-out process is facilitated;
step six, taking out the mold core: the contact part of the middle mold core member 5 and the inner peripheral surface 13 of the tire body forms a mold core telescopic through hole 21, the middle mold core member 5 is taken out along the axial direction of the mold core telescopic through hole 21, and the tire body 1 is made of elastic rubber, so that the middle mold core member is easy to pull out from the mold core telescopic through hole 21;
step seven, demolding: the upper mold cavity 33 and the lower mold cavity 34 are opened, and the upper mold 31 and the lower mold 32 are removed to complete the tire molding process.
In this embodiment, the head end 51 of the middle mold core member is inserted into the tire carcass 1, and the adjacent middle mold core members 5 inserted into the tire carcass 1 are independent from each other to form a plurality of bladder cavities 2 distributed circumferentially at equal intervals; as shown in fig. 8, the horizontal projection shape of the single middle mold core member 5 is a U shape, each adjacent bladder cavity 2 is independent, and an elastic support member 22 is formed between two adjacent bladder cavities 2, so that the tire carcass 1 is internally provided with an elastic support member 22 for reinforcing the structural strength of the tire, and the problem of strength reduction and the like caused by the opening of the bladder cavity 2 in the tire carcass 1 is solved.
Example 7
The basic structure of the tire with a cavity supporting frame structure and the processing method thereof in the embodiment is the same as that in the embodiment 6, and the differences and improvements are as follows: the method comprises the following steps:
step one, die assembly: closing the upper mold 31 and the lower mold 32 of the tire forming mold 3 to form a cavity in which the upper cavity 33 and the lower cavity 34 are combined; after the upper die 31 and the lower die 32 are combined, mold-stripping through holes 35 which are distributed at equal intervals are reserved in the circumferential direction of the inner side walls of the upper die and the lower die;
step two, installing a mold core: putting the mold core into the middle part of the inner ring of the tire forming mold 3 in advance, wherein the middle mold core members 5 in the mold core are distributed in the circumferential direction and extend out of the middle mold core members 5, so that the tail end 52 of each middle mold core member is aligned with the mold stripping through holes 35 reserved on the inner side walls of the upper mold and the lower mold;
step three, injection: inserting one end of an injection pipe 4 into a mold cavity of a tire molding mold 3, then injecting a rubber material, and keeping constant pressure for 5-60 s to ensure full filling and filling;
step four, inserting a mold core: after receiving a signal that rubber is filled completely, turning over a middle mold core member 5, wherein a head end 51 of the middle mold core member extends out and penetrates through a mold outlet through hole 35, and then inserting the middle mold core member into the tire carcass 1 along a direction perpendicular to the inner circumferential surface 13 of the tire carcass, so that a carcass filling part 12 in the tire carcass 1 is extruded by the middle mold core member 5, and a bladder cavity 2 is formed;
step five, vulcanization molding: vulcanizing the tire carcass 1 in the tire forming mold 3, wherein the middle mold core member 5 is still arranged in the tire carcass 1 in the vulcanizing process, so that the energy consumption generated by mold opening, mold core taking and placing is reduced, and the dimensional tolerance of the precision of the bladder cavity 2 is avoided during the vulcanizing reaction; the mold cores are distributed at equal intervals along the circumferential direction of the tire body 1, and the outer ends of the mold cores are arranged on the outer side of the inner circumferential surface 13 of the tire body, so that the subsequent taking-out process is facilitated;
step six, taking out the mold core: the contact part of the middle mold core member 5 and the inner peripheral surface 13 of the tire body forms a mold core telescopic through hole 21, the middle mold core member 5 is taken out along the axial direction of the mold core telescopic through hole 21, and the tire body 1 is made of elastic rubber, so that the middle mold core member is easy to pull out from the mold core telescopic through hole 21;
step seven, demolding: the upper cavity 33 and the lower cavity 34 are opened, the upper mold 31 and the lower mold 32 are removed, and the tire is taken out to complete the tire molding process.
In the embodiment, as shown in fig. 6 to 7, after mold closing, the mold core is placed in the middle of the inner ring of the tire forming mold 3 in advance, the tail ends 52 of the middle mold core members distributed in the mold core in the circumferential direction are aligned with the mold outlet through holes 35 reserved on the inner walls of the upper mold and the lower mold, one end of the injection tube 4 is inserted between the upper mold cavity 33 and the lower mold cavity 34 of the tire forming mold 3, then rubber materials are injected, after the injection is completed, the mold core is started, the middle mold core member 5 is turned over, the head end 51 of the middle mold core member extends out and penetrates through the mold outlet through hole 35, and then the middle mold core member is inserted into the tire carcass 1 in sequence from one end of the injection tube 4 close to the tire forming mold 3 along the direction perpendicular to the inner circumferential surface 13 of the tire; and can ensure that the capsule cavities 2 are communicated with each other to form a whole; by means of injection and mold insertion, uniformity of rubber materials in the tire body 1 is guaranteed, and the periphery of the formed bladder cavity 2 can be guaranteed to be smoother; the mold core can be retracted without opening the mold, so that energy consumption caused by opening and closing the mold is avoided, and the dimensional tolerance of the precision of the capsule cavity 2 in the molding process can be avoided; the forming mode has simple structure and convenient operation, thereby effectively improving the production efficiency and reducing the energy consumption; as shown in fig. 2 to 3, the single middle mold core members 5 contact with each other to ensure that the respective capsule cavities 2 are communicated with each other to form a whole; singly 5 horizontal plane projection shapes of well mould core member are the U-shaped to can form the spring ring structure 23 that the U-shaped links to each other, each adjacent cyst chamber 2 UNICOM each other, each spring ring structure 23 annular is connected, forms the bearing structure similar to the spring form, the crossing cavity bearing structure that forms of cyst chamber 2, cavity bearing structure horizontal plane projection is the spring ring structure 23 that the U-shaped links to each other, link up each other and form a whole to play and have the effect of strengthening tire structural strength and the buffer capacity that improves the tire matrix concurrently, further strengthen the travelling comfort, save the power consumption of riding.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (9)
1. The utility model provides a cavity support frame structure tire, includes tire carcass (1), tire carcass (1) includes carcass outer peripheral surface (11) and carcass inner peripheral surface (13), its characterized in that: the inner circumferential surface (13) of the tire body is provided with mold core telescopic through holes (21) along the circumferential direction at equal intervals in the radial direction; corresponding to the position of each mold core telescopic through hole (21), a sac cavity (2) is radially formed in the tire carcass (1), and the sac cavity (2) forms a cavity support frame structure in the tire carcass (1).
2. A cavity support frame structure tire according to claim 1, wherein: adjacent bag cavities (2) formed in the tire body (1) are separated or tangent or intersected.
3. A cavity support frame structure tire according to claim 2, wherein: the vertical projection of the cavity support frame structure is a spring ring structure (23) connected with the capsule cavity (2).
4. A cavity cage structure tire according to claim 3, wherein: carcass filling parts (12) are arranged between all the bladder cavities (2) in the tire carcass (1), and the carcass filling parts (12) between two adjacent bladder cavities (2) form elastic supporting members (22).
5. A well-designed cage structural tire according to claim 4, wherein: the outer diameter of the mold core telescopic through hole (21) is larger than or equal to the maximum outer diameter of the capsule cavity (2).
6. A processing method of a tire with a cavity supporting frame structure is characterized by comprising the following steps: the method comprises the following steps:
step one, die assembly: closing an upper die (31) and a lower die (32) of the tire forming die (3) to form a die cavity formed by combining an upper die cavity (33) and a lower die cavity (34); after the upper die (31) and the lower die (32) are combined, mold-stripping through holes (35) which are distributed at equal intervals are reserved in the circumferential direction of the inner side walls of the upper die and the lower die;
step two, installing a mold core: turning over the middle mold core member (5) so that the tail end (52) of the middle mold core member is aligned with the mold stripping through hole (35);
step three, injection: inserting one end of an injection pipe (4) into a mold cavity of a tire molding mold (3), then injecting a rubber material, and keeping constant pressure;
step four, inserting a mold core: when a signal that the rubber is filled completely is received, turning over the middle mold core member (5), extending the head end (51) of the middle mold core member out and penetrating into the mold outlet through hole (35), and then inserting the middle mold core member into the tire body (1) along the direction vertical to the inner circumferential surface (13) of the tire body;
step five, vulcanization molding: vulcanizing the tire carcass (1) in the tire forming mold (3), wherein in the vulcanizing process, a middle mold core member (5) is left in the tire carcass (1);
step six, taking out the mold core: a contact part of the middle mold core component (5) and the inner peripheral surface (13) of the tire body forms a mold core telescopic through hole (21), and the middle mold core component (5) is taken out along the axial direction of the mold core telescopic through hole (21);
step seven, demolding: and opening the upper mold cavity (33) and the lower mold cavity (34), dismantling the upper mold (31) and the lower mold (32), and taking out the tire body (1).
7. The method for processing the tire with the cavity supporting frame structure as claimed in claim 6, wherein the method comprises the following steps: in the fourth step, the head end (51) of the middle mold core component sequentially penetrates through the mold through holes (35) from the position close to the mold through hole (35) of the injection pipe (4) along the circumferential direction of the tire forming mold (3) and is inserted into the tire carcass (1).
8. The method for processing the tire with the cavity supporting frame structure as claimed in claim 7, wherein the method comprises the following steps: adjacent intermediate mold core members (5) inserted inside the tire carcass (1) are in contact with each other.
9. The method for processing the tire with the cavity supporting frame structure as claimed in claim 8, wherein the method comprises the following steps: the horizontal plane projection shape of the single middle die core component (5) is U-shaped.
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