CN114055821A

CN114055821A - Tyre manufacturing process and inner core

Info

Publication number: CN114055821A
Application number: CN202010794141.0A
Authority: CN
Inventors: 潘川; 朱健鹏
Original assignee: Qingdao Muwo Technology Co ltd
Current assignee: Qingdao Muwo Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2022-02-18

Abstract

The invention discloses an inner core for tire molding and a molding process, wherein a meltable material is used for manufacturing the inner core of the tire to replace a vulcanization capsule, and the inner core is melted and flows out in a heating mode after the tire is molded. The process and the core can be used for manufacturing the tire with fluid or semi-fluid raw materials. Suitable for heavy truck, trailer, light truck, off-road vehicle, ATV, bus, aircraft, agricultural, mining, bicycle, motorcycle and passenger vehicle tires.

Description

Tyre manufacturing process and inner core

Technical Field

The invention relates to the technical field of tires, in particular to a tire molding process and a tire mold.

Background

The tire is used as a part of a vehicle, which is in contact with the ground, and needs to have high strength in the running process of the vehicle and play a role in buffering to ensure the comfort of the vehicle. In order to ensure the strength of the tire and satisfy the comfort level of the tire, most of common tires are pneumatic tires. Also, in order to meet certain specific requirements, some tires are solid or use a non-pneumatic tire with a support structure.

The inflation mode of a pneumatic tire is classified into a tubed mode and a tubeless mode, and in either case, a cavity for storing gas needs to be formed inside the tire.

In order to generate the cavity inside the tire in the production process of the traditional tire, a bladder forming mode is mostly adopted, the main principle of the mode is that high-pressure water or high-pressure gas entering the interior of the bladder is used for swelling the bladder, the tire blank is outwards extruded to a tire mold from the interior, a cavity inside the tire is formed after vulcanization forming, and the bladder is shrunk and drawn out after vulcanization. The inflated shape of the bladder determines that the tire interior is a communicating annular space (see fig. 1). The shape of the inner space of the tire has great influence on the performance of the tire, for example, the support rib is added in the inner space of the tire to provide better support and stability for the tire, so that the performance of the tire is greatly improved; the honeycomb structure is added in the inner space of the tire, so that the tire can be converted into an inflation-free tire, and the tire burst hazard and the like are avoided. The bladder process is limited by the shape of the bladder, so that the difficulty in manufacturing the special-shaped inner space in the pneumatic rubber tire is great.

If the initial state of the material of the tire is liquid (such as injected rubber, plastic macromolecules and the like) in the production process of the tire, if the capsule is used for molding by adopting the traditional tire production process, the material cannot provide stable reverse pressure for the capsule, so that the expansion of the capsule is difficult to control under the state of internal pressure, the capsule is easily contacted with an outer side mold under the influence of the expansion and the dead weight, and the phenomenon of different thicknesses appears during the production of the product, so that the product is scrapped. Additionally, if it is desired to enhance tire performance by adding a support structure to the tire, the use of bladders does not provide a location for the support structure. Therefore, tires produced when the raw material is liquid are mainly solid tires, which are expensive and less comfortable than rubber tires. And when the required tires are large-sized engineering tires and giant tires, the solid tires have extremely large weight, the oil consumption is rapidly increased, and the manufacturing cost is greatly increased.

Disclosure of Invention

The invention aims to provide an inner core for tire molding and a molding process, the method uses a meltable material to manufacture the inner core of the tire instead of a curing bladder, and the inner core can be melted and flowed out in a heating mode after the tire is molded. By using the method, various internal supports and spaces with different shapes can be generated inside the tire, and the tire is applicable to both inflation type tires and non-inflation type tires. The process of the invention is suitable for use with various types of tyres initially produced from liquid raw materials.

In order to achieve the above purpose, the invention provides the following technical scheme:

firstly, a meltable material is used for manufacturing an inner core, an upper die and a lower die of an inner core die are opened, partial material is injected to form a first material layer, partial heating wires and other inserts are pre-embedded, partial material is injected to form a second material layer until a half die is filled with a third material layer (as shown in figure 2). After the upper and lower dies of the inner core die are respectively filled with the materials, the inner core die is cooled for a period of time, the materials are solidified and contracted, then the inner core die is closed, and the middle layer is injected to integrally form the product (as shown in figure 3). In this way, the pre-buried heater wire can be ensured to be in the best position. After the materials are completely injected into the mold, the mold is continuously placed into a plurality of low-temperature chambers with different temperatures for cooling according to fixed time. And during cooling, enough materials are kept in the feeding bin to ensure the shrinkage and material supplement after temperature reduction. And taking out the semi-finished product after cooling, entering a machining process, finishing the appearance of the semi-finished product, and pre-grooving or pre-punching the position of the mechanical insert (shown in figure 4). And after the machining is finished, coating an isolation film on the surface, and finishing the manufacturing of the inner core. The mechanical insert in the inner core can be used in various sizes and purposes, the mechanical insert can be semi-through type, clamping type, material injection type and the like, and the installation positions are uniformly distributed on the inner core according to the requirement of support. The mechanical insert can also be poured into the inner core in an embedded mode.

When the inner core is formed in a 3D printing mode, machining and finishing and surface coating are needed to ensure the accuracy and the surface quality of the inner core.

After the inner core is manufactured, the mechanical insert for fixing is installed at a designated position (or the insert is directly arranged in the inner core when the inner core is manufactured). Then, the inner core is connected with the supporting structural member by a certain mechanical connection (threads, quick insertion or clamping, etc.) so that the inner core and the supporting structural member form a complete tire inner core (as shown in fig. 5). After the core is manufactured, the core is placed in a tire mold for casting (see fig. 6), and is positioned and fixed by a support structure. The support location for the inner core may be either on the side of the tire (as in fig. 6) or at the pressure bearing ring within the tire (as in fig. 7).

When pouring, the inner bearing ring, the tire body and the tire surface of the tire are respectively poured (CN110561979A), wherein the pouring sequence is that the tire surface (the process is shown in CN110948764A) and the inner bearing ring (as shown in figure 8) are poured firstly, after the inner bearing ring is formed, the inner core and the tire body component are arranged in a mould, and the tire body is poured (as shown in figure 9). Meanwhile, when the tire tread is poured, the contact space between part of the tire tread and the tire body is reserved and no glue is injected, the belt layers with different angles are wound on the tire body after the tire body is poured and formed, and the reserved tire tread part is poured after the mold is closed again, so that the whole tire is formed. When the inner core supporting structure needs to be supported from the inner pressure bearing ring, the inner pressure bearing ring can be poured after the tire body is poured and molded.

After the casting is completed, the tire and the inner core are taken out of the mold together. The tire with the inner core is placed into the post-cure chamber while the inner core support structure is removed. In the post-vulcanization process, the inner core is heated by the pre-buried heating wire in the mechanical insert communicated inner core on the inner core, so that heat is provided for post-vulcanization of the tire and the inner core material is melted into liquid, when the post-vulcanization is about to be finished, a channel (breathing hole) reserved when the supporting structure is detached is opened to draw out the melted liquid inner core, and finally the mechanical insert and the pre-buried heating wire are taken out and cleaned up. The liquid meltable material is filtered and then is transferred back to the tire inner core manufacturing procedure together with the cleaned mechanical insert and the heating wire, so that the whole process cycle is completed.

Preferably, the meltable material is a machinable paraffin.

Preferably, the meltable material is an alloy of low melting point metals, such as bismuth, cadmium, tin, lead, dysprosium, indium, and the like.

Preferably, the tire inner core material can be mixed with a plurality of materials.

Preferably, materials such as fibers and powder can be added into the meltable material to improve the material performance.

Preferably, the melting point of the meltable material should be 20 ℃ or more below the post-vulcanization temperature.

Preferably, the tire inner core is manufactured by using a meltable material and adopting injection molding, casting molding, direct processing molding, 3D printing or simultaneously using a plurality of schemes such as processing after casting and the like.

Preferably, in the production of the tire inner core, the inner core may be produced by assembling a plurality of shapes.

Preferably, the heating device can be a heating wire, a hollow hose for supplying hot air or hot oil, a channel for directly supplying hot air, and the like, so that the melting speed can be accelerated in the later period.

Preferably, the tyre core is melted using electromagnetic techniques.

Preferably, when the tire inner core part is meltable, a microwave heating mode can be adopted.

Preferably, the heating wire is soft, and is externally covered with an insulating high-temperature resistant material and is heated electrically.

Preferably, the heating wire is arranged to a specified position by using a tool when being placed.

Preferably, a temperature measuring device is mounted on the heating wire.

Preferably, the mechanical insert can serve as a discharge channel.

Preferably, the discharge channel is plugged with a connector during heating.

Preferably, the parts in the inner core supporting structure are made of Teflon materials or are sprayed with Teflon on the surfaces.

Preferably, the machining and finishing are performed using numerical control equipment.

Preferably, the mechanical insert is a hollow threaded pipe with a plug structure.

Preferably, the mechanical insert has a plug spring inside for heating and lateral positioning.

Preferably, the core support structure is mounted on the lower side plate or on the inner pressure ring member.

Preferably, the mechanical connection is a threaded connection.

Preferably, the inner core isolation membrane is coated in a spraying mode, and the material of the inner core isolation membrane is a high polymer material or a metal material.

Preferably, the melting point of the inner core isolation film is higher than that of the body material.

Preferably, the liquid core is extracted by gravity.

Preferably, the liquid core is pumped out by a high-temperature pump.

Preferably, the liquid core is extracted and treated, and then directly enters the core reshaping process.

Preferably, a mechanical coiling tool is adopted when the mechanical insert and the heating wire are extracted, so that thermal injury to an operator is prevented.

Preferably, when the tire body is poured, the inner pressure bearing ring needs to have certain strength.

Preferably, the carcass pouring time is concurrent with the tread pouring time.

Preferably, after the product is solidified, a special mold opening and closing tool is used for opening the mold.

The tire forming process and the inner core for forming provided by the invention have the following technical effects:

1. the problem of the shaping of liquid pouring tire inner space has been solved.

2. So that the shape of the inner space of the tire has diversity. The internal diversity structure improves various performances of the tire.

3 the process greatly shortens the time of structure improvement, can quickly carry out structure adjustment in the shortest time and improves the research and development speed of new products.

4. The recovery of the meltable material directly enters the production cycle, thereby saving the production cost.

5. The pre-buried heating device provides heat for post-vulcanization of the tire material through heating the inner core, so that the post-vulcanization speed is increased, and the production efficiency is improved.

6. Most of fusible materials have the characteristic of adjustable melting point, and the types of usable liquid polymers are expanded.

7. The application of the fusible material inner core enables the inner cavity structure of the tire to be diversified, more complex inner structures of the tire can be manufactured, and the tire can have more functions, such as explosion prevention and the like.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a diagram of a tire bladder;

FIG. 2 is a core shot diagram;

FIG. 3 is a core mold closing and material injection diagram;

FIG. 4 is a view of a mechanical insert for a core

FIG. 5 is a schematic view of a core support structure;

FIG. 6 is a view of a tire mold for casting;

figure 7 is a supporting structure view of the inner pressure ring;

FIG. 8 is a drawing of a stepped casting mold for the inner bearing ring;

FIG. 9 is a view of a carcass casting step mold;

FIG. 10650-10 is a cross-sectional view of the non-pneumatic tire;

FIG. 1123.5R 25 closed tire section view;

fig. 12650R 10 is a schematic view of a tire construction;

FIG. 13650R 10 is a schematic view of a tire core construction;

description of reference numerals:

1. an inner core; 2. a mechanical insert; 3. a structural support; 4. an upper side plate; 5. pattern blocks; 6. an outer die sleeve; 7. a lower side plate; 8. steel rings; 9. an inner pressure bearing ring forming member.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

The inner core is made by using a special forming die, and the special forming die is characterized in that the upper die and the lower die of the die are opened, partial materials are injected to form a first material layer, partial heating wires and other inserts are pre-embedded, partial materials are injected to form a second material layer until a half die is filled with a third material layer (as shown in figure 2). After the upper die and the lower die of the inner core die are respectively filled with the materials, the inner core die and the lower die are cooled for a period of time and then are closed after the materials are solidified and shrunk, and the materials in the middle layer are injected through the reserved material injection channels, so that the embedded parts can be reasonably distributed at the designated positions. The upper die is also provided with a die assembly material injection hole for injecting the material of the middle layer after die assembly. When the middle layer is injected, the temperature of the injected material is higher than the melting point of the material by 50-60 ℃ to ensure the fluidity of the material. When the material is injected, the material inlet bin is arranged on the injection opening, and the material in the material inlet bin is kept to be enough and heated to keep a molten state, so that a cavity cannot be formed on the inner core due to material shrinkage.

When layered casting is carried out, a corresponding connecting hole is reserved on the pre-embedded heating wire joint or a mechanical insert is directly installed.

For the material with larger shrinkage, attention needs to be paid to the fact that the mold can not be opened after the mold is completely cooled so as to prevent the defects of product cracking, stress concentration and the like caused by shrinkage.

After the semi-finished product of the inner core is taken out of the mould, the semi-finished product of the inner core is required to be placed in a special cooling chamber and is gradually cooled to the room temperature. And (4) after obtaining a semi-finished product capable of being subjected to finish machining, performing outline finish machining by using a numerical control lathe, and machining a required shape by using a numerical control machine (metal materials are also subjected to electric discharge machining). And after the processing is finished, spraying an isolating film on the surface. And finishing the manufacture of the inner core.

As shown in fig. 6, the tire casting mold provided in this embodiment is divided into three segments, which are used for molding the tread, the carcass, and the inner pressure ring. Depending on the tire construction, the mold may also have a sidewall shaped portion. According to the pouring sequence of the tire mold, firstly, the tire tread is poured, when the inner core is fixed on the side plates, the inner pressure-bearing ring is poured while the tire tread is poured, when the inner core is fixed on the inner pressure-bearing ring part, the outer mold of the inner pressure-bearing ring is assembled as shown in figure 7, the tire body is poured firstly, and the inner pressure-bearing ring is poured after the tire body is molded. When the tire tread is poured, a part of tire tread and tire body contact space is reserved for not injecting glue, the belt layers with different angles are wound on the tire body after the tire body is poured and formed, and the reserved tire tread part is poured after the mold is closed again, so that the whole tire is formed.

And after the pouring is finished and the tire is cured, taking the tire and the inner core out of the mold. The tire with the inner core is placed into a post-vulcanization chamber, the inner core supporting structure is detached from the tire, and a channel reserved when the supporting structure is detached is plugged, so that the material melted firstly when the inner core is melted is prevented from flowing out of the channel.

In the post-vulcanization process, the inner core is heated through the embedded heating wire in the mechanical insert communicated inner core on the inner core, so that heat is provided for post-vulcanization of the tire, the inner core material is melted into liquid, when the post-vulcanization is about to be finished, a channel reserved when the supporting structure is detached is opened, the melted liquid inner core is drawn out, and finally the mechanical insert and the embedded heating wire are taken out and cleaned up. The liquid meltable material is filtered and then transferred back to the tire inner core manufacturing procedure together with the cleaned mechanical insert and the heating wire, so that the whole process cycle is completed.

The actual production process of the core and the production process is illustrated below:

example 1, the production process of an internal support type tire (structure shown in fig. 10) with the specification of 650-10 is taken as an example, a plurality of split inner cores are used.

When a tire with the specification of 650-10 is produced, paraffin with the melting point of 100 ℃ is used as a manufacturing material for the inner core, and the manufacturing process is as follows:

firstly, controlling the temperature of an inner core forming wax mold (hereinafter referred to as the wax mold) to be 60 ℃, opening an upper mold and a lower mold, heating a wax raw material to 120 ℃, and respectively injecting 10% of materials into the upper mold and the lower mold to ensure that the metal surfaces of the upper mold and the lower mold are completely covered by the wax material.

And after the temperature of the injected wax material is reduced to 80 ℃, a wiring tool is used for distributing the heating wire into the upper die and the lower die, and the wax material is continuously injected until the wax material is filled. The material is ensured to completely cover the heating wire during material injection. The heating wire joint is provided with a mechanical insert which is embedded into the wax together with the heating wire.

And when the temperature of the wax material injected for the second time is reduced to 70 ℃, removing the part of the injection port of the upper die, closing the upper die and the lower die, and locking. And material feeding bins are arranged on the four material feeding ports for feeding materials. Keeping the temperature of the feeding bin above 100 ℃, and continuously cooling the wax mold to 40 ℃. The feed bin is removed.

And taking out the semi-finished product inner core formed in the die, horizontally placing on a storage rack, and cooling to room temperature.

And (3) machining the outer contour of the cooled inner core on a numerical control lathe, measuring the roundness on the lathe before machining, and directly scrapping the inner core which is out of roundness and face run-out more than 3mm to return to the inner core forming process for reshaping.

And after the machining is finished, removing the wax above the mechanical insert by using a heating tool, and installing the hollow threaded rod for supporting.

By adopting the mode, the inner cores are processed respectively, and then the inner cores are assembled into a whole through the insert and then assembled on the lower side plate of the die.

And sequentially pouring, tire tread and an inner pressure-bearing ring according to the pouring sequence, installing the inner pressure-bearing ring and the inner pressure-bearing ring component on the lower side plate, then installing the upper side plate and the tire body outer mold, and pouring the tire body by using a polyurethane material.

And opening the outer mold of the tire body after the tire body is molded by casting, winding the belt layers with different angles on the tire body, loading the finished tire tread and the tire tread mold, and casting the reserved tire tread and tire body contact space after the mold is closed again, so that the whole tire is molded.

And after the casting molding is finished, taking the tire and the inner core out of the mold. The tire with the inner core is placed into a post-vulcanization chamber, the inner core supporting threaded rod is detached from the tire, the heating wire is pulled out of the tire, and the threaded hole in the lower side of the tire is blocked by a rubber plug. And electrifying to heat the inner core, controlling the temperature of the heating wire at 80-90 ℃, and continuously heating for 2-3 hours, wherein the melting condition of the material in the die is observed through an endoscope. And after all the inner cores are melted, opening the rubber plug at the bottom, and discharging all the wax materials.

After the wax material is discharged, the wax material is filtered by a filter screen and then is injected into the wax mould vacated before again. And (4) putting the tire into a post-vulcanization chamber, and continuously vulcanizing for 10 hours to finish vulcanization.

Example 2, a single integral core was used for example in a 23.5R25 closed tire profile (see fig. 11) production run.

In the production of a tire with the specification of 23.5R25, paraffin with the melting point of 90 ℃ and alloy with the melting point of 120 ℃ are used as manufacturing materials for the inner core, and the manufacturing process is as follows:

And after the temperature of the injected wax material is reduced to 70 ℃, a wiring tool is used for distributing the heating wire into the upper die and the lower die, and the wax material is continuously injected to the parting surface. The material is ensured to completely cover the heating wire during material injection. The heating wire joint is provided with a mechanical insert which is embedded into the wax together with the heating wire.

And when the temperature of the wax material injected for the second time is reduced to 60 ℃, removing the upper die injection port part installation supporting structure, connecting the mechanical inserts installed in the upper die and the lower die into a whole, closing the upper die and the lower die, and locking. And material feeding bins are arranged on the four material feeding ports for feeding materials. Keeping the temperature of the feeding bin above 90 ℃, and continuously cooling the wax mold to 60 ℃. The feed bin is removed. The material filling port is plugged, and then the whole wax mold is installed on the turnover equipment, so that the wax mold is continuously turned over in the residual cooling process, and the uniformity of a shrinkage cavity in the inner core is ensured.

Cooling to 40 deg.C, opening the mold, taking out the semi-finished product core formed in the mold, placing on a shelf, and cooling to room temperature.

And after the machining is finished, removing the wax above the mechanical insert by using a heating tool, and installing the hollow threaded rod for supporting. And after the installation, spraying alloy, wherein the thickness of the coating is controlled to be 0.1-0.15 mm. And after the completion, the steel cord is wound by a winding procedure. And assembling the product on a mould after winding.

And respectively filling the tire tread and the tire body of the mold into a rotating device, and respectively pouring the tire tread and the tire body by using a polyurethane material. And opening the outer mold of the tire body after the tire body is molded by casting, winding the belt layers with different angles on the tire body, loading the finished tire tread and the tire tread mold, closing the mold again, casting the reserved tire tread and tire body contact space, and simultaneously casting the inner pressure-bearing ring to mold the whole tire.

And after the casting molding is finished, taking the tire and the inner core out of the mold. The tire with the inner core is placed into a post-vulcanization chamber, and the inner core support threaded rod is removed from the tire to pull the heater wire out of the tire. And electrifying to heat the inner core, controlling the temperature of the heating wire at 80-90 ℃, and continuously heating for 2-3 hours, wherein the melting condition of the material in the die is observed through an endoscope. And after all the inner cores are melted, pumping out all the wax materials by using a material pumping pump.

Example 3, a radial tire structure of 650R10 gauge (see patent CN110561979A, fig. 12) was produced using a partially meltable core as an example.

In the production of a tire with the specification of 650R10, an inner core (the structure is shown in figure 13) is made of an aluminum material with the surface sprayed with Teflon and paraffin with the melting point of 100 ℃ as manufacturing materials, and the structure is a multi-block splicing structure. The manufacturing process comprises the following steps:

an aluminum inner core block that can be removed using mechanical structures and a wax block for removing the design for the aluminum inner core block are designed according to the shape of the inner core. The block line is as shown in fig. 13, the manufactured aluminum inner core block and the wax block are assembled into a whole, and a layer of high polymer material is sprayed on the outer part. And finishing the manufacture of the inner core.

The manufacturing method is carried out according to the tire manufacturing process in the patent CN110561979A, after the manufacturing is completed, the tire with the inner core is taken out, and the wax block in the inner core is melted and extracted by using a heat source. The aluminum inner core block is then removed using a grasping robot to obtain the finished tire. And (4) putting the tire into a post-vulcanization chamber, and continuously vulcanizing for 10 hours to finish vulcanization.

The tire forming process and the inner core for forming have the following technical effects:

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The invention provides a process method for tire molding in the tire production process, which adopts meltable materials to manufacture a tire inner core [1], puts a mechanical insert [2] and a structural support member [3] into a tire mold, uses liquid raw materials, and molds a tire body, a tire tread and an inner pressure-bearing ring through an upper side plate [4], a lower side plate [7], a pattern block [5], an outer mold sleeve [6] and an inner pressure-bearing ring molding member [9] provided with a steel ring [8 ]; in the process of tire molding, the material of the inner core [1] can keep better strength, in the process of post-vulcanization, the inner core [1] is changed into liquid in a melting mode and is discharged through a reserved discharge channel on the tire, and therefore the tire molding is realized.

2. The in-process tire core [1] according to claim 1, wherein said meltable material has a melting point above a liquid material pouring temperature and below a vulcanization temperature; the material can be selected from various high polymer, metal and nonmetal materials; according to the actual production requirement, various materials can be mixed and manufactured.

3. The in-process tire core [1] according to claim 1, wherein the core is in any workable shape, and the molding process is injection molding, cast molding, machine molding, 3D printing, or the like, or a mixture thereof.

4. Tyre core [1] in process according to claim 1, characterized in that said core discharge channel coincides partially or totally with the mechanical inserts [2] and the support structure [3] in the core. The mechanical insert [2] and the supporting structural member [3] are positioned in the inner core definitely, and the inner core is provided with improvement on the properties of supporting, positioning, strengthening the strength of parts and the like.

5. The in-process tire core [1] according to claim 1, wherein said core may be added with various means of heating during the manufacturing process.

6. The in-process tire inner core [1] according to claim 1, wherein said inner core is coated with a barrier material such as a polymer material like polyethylene or various types of metal coating materials during the manufacturing process to prevent the product and the inner core from mixing or infiltrating.

7. The in-process tire inner core [1] according to claim 1, wherein various fillers are added to the inner core during the manufacturing process to enhance its strength.

8. In-process tire core [1] according to claim 1, wherein the core is meltable in a partial part.

9. The process as claimed in claim 1, wherein the steel ring (8) and the inner pressure-bearing ring part are installed in a mold, and a liquid high molecular material is injected to complete the manufacture of the inner pressure-bearing ring; after the upper side plate [4], the lower side plate [7] and the tire body component are closed, the tire body is poured; after partial solidification, opening the tire body component, installing the pattern block [5] and the outer die sleeve [6] of the poured partial tire tread, and beginning to pour the joint part of the tire tread and the tire body; and finishing the pouring of the whole tire after the pouring is finished.

10. The tire and manufacturing process of claim 9, wherein the step of integrally forming is followed by the step of:

after all pouring is finished, adjusting to a specified temperature; and (4) detaching the whole die and the product from the equipment, and placing the die and the product into a constant temperature chamber for curing.

Opening the mold after the product is solidified, taking out the product, putting the product into a constant temperature chamber for post-vulcanization, removing the inner core [1] in the post-vulcanization process or after the post-vulcanization process is finished, wherein the inner core [1] can be moved out of the tire by a melting or partial melting method; after removal, the whole product is obtained.