CN115431676A - Tire pressure ring and its manufacturing process - Google Patents

Abstract

The invention discloses a tire pressure-bearing ring structure and a pressure-bearing ring manufacturing process. The tyre is internally provided with the bearing ring, and the bearing ring can be manufactured into one layer or a plurality of layers, so that the bearing capacity of the tyre in the rolling process is stronger. And the tire tread can be more stable in the driving process, and the integral wear resistance of the tire is improved. The structure is suitable for various types of solid tires, inflatable tires and retreaded tires, including car tires, truck tires, engineering tires, giant tires, special tires and the like, and is particularly suitable for engineering tires and giant tires with lower speed and higher load.

Description

Tire pressure ring and its manufacturing process

technical field

The invention relates to the technical field of tire manufacturing, in particular to a tire pressure ring.

Background technique

At present, all-steel radial truck and bus tires are mainly launched by the French Michelin company in the 1950s. The structure of all-steel radial tire includes tread, base rubber, belt layer, carcass, soft triangle, hard triangle, spout wear-resistant rubber, sidewall rubber, airtight layer, transition layer, etc. After nearly 70 years of development, all-steel radial rubber tires have obvious advantages in performance and fuel consumption, and are now widely promoted around the world.

The belt layer is the part where steel wires are arranged at different angles between the tread and the carcass to improve the support and stress of the tire. Its main functions are as follows: First, it resists centrifugal force together with the carcass, prevents the crown from protruding outward due to centrifugal force, and ensures a stable tire outer diameter and tire circumference. Second, control the ideal shape of the tire footprint to effectively provide grip/traction. Third, it provides the rigidity required for tire cornering and steering to bring excellent handling. Fourth, resist the invasion of foreign objects on the road. Simply put, the belt layer is a tire component that is arranged by steel wires at a certain angle and glued to the surface of the steel wires by extrusion. According to the specification, type, use environment, load, speed, etc., the tires are designed to have different number of belt layers, different belt widths, different belt wire angles, different belt thicknesses, different The structure of the thickness of the steel wire of the belt layer can meet the needs of the actual situation.

At present, the production process of the rubber tire belt layer is relatively complicated. First, a certain number of steel wires are arranged in several rows in the spindle room, and then enter the calender at a certain speed to attach the rubber material, and finally the belt layer is cut. The bundle layer angles are different, so the cutting angle needs to be obliquely cut according to actual needs. Finally, it is cut into belt parts that meet the width and angle, and it is laminated when it is to be formed. In addition to the complex and expensive equipment and process, the oblique cutting process will also produce a large amount of waste, which will increase the manufacturing cost of the tire, which is especially prominent for engineering tires and giant tires.

The above process has lasted for nearly 70 years. The technical indicators of this process are strictly controlled in actual production, otherwise problems such as uneven glue hanging and steel wire leakage may occur. During use, the two ends of the steel wire rub against the rubber under dynamic conditions, which becomes the damage point and causes the tire to be damaged. Although this kind of problem cannot be solved fundamentally, the use of steel wire increases the contact area between the rubber material and the surface of the steel wire, so that the belt layer has sufficient shear strength when the tire is rolled and sheared, so the use of steel wire adapts to the The production process of viscous body rubber tires.

With the development of technology, liquid raw materials realize the production of tires and simplify the entire process. Liquid raw materials have obvious advantages in fluidity, permeability, adhesion and adhesive strength. For related technologies, refer to CN 201910815970.X, CN201911421934.1 , CN201911300250.6. The invention provides a structure and a manufacturing method which can replace the steel wire belt part with a pressure ring in the process of producing tires from liquid raw materials.

Contents of the invention

The object of the present invention is to disclose a structure and a manufacturing method which can replace the steel wire belt layer with a pressure ring in the process of producing tires from liquid raw materials. The tire has a pressure-bearing structure inside, and the pressure-bearing ring can be manufactured in the form of one layer or multiple layers. This technology uses liquid raw materials to produce tires. Compared with traditional tire manufacturing processes, the manufacturing process is simpler, the produced tires have stronger load-bearing capacity, and the product disease problem caused by steel wires is eliminated. The pressure-bearing ring structure is suitable for various types of solid tires, pneumatic tires and retreaded tires, including car tires, truck tires, engineering tires, giant tires and special tires, etc., especially suitable for slower speed and higher load engineering tires and giant tires.

In order to achieve the above object, the present invention provides the following technical solutions: the pressure bearing ring is a circular ring with holes or protrusions on the surface, made of metal or polymer composite materials, etc., and the pressure bearing ring is located below the tire tread (shown in Figure 1 ), has the function of bearing pressure, and can keep the shape of the tread stable. The pressure ring is produced by machining or injection molding, processing technology, and 3D printing technology, and the surface is treated. After completion, the multi-layer pressure ring is compounded, and finally put into the tire mold to produce the tire.

Preferably, the tire bearing ring material can be polymer material, metal material, carbon fiber material, composite material and the like.

Preferably, the surface of the inner pressure ring of the tire may have holes of various shapes, such as circular, triangular, elliptical, linear, etc., as shown in FIG. 2 .

As a preference, the surface of the inner pressure ring of the tire may have protrusions of various shapes, as shown in Fig. 3 .

As a preference, the inner pressure ring of the tire can be arranged in a single-layer or multi-layer structure, as shown in FIG. 4 .

Preferably, when the inner pressure ring of the tire is a multi-layer structure, each layer can be connected by adhesive or mechanically.

Preferably, the width and thickness of the inner multi-layer bearing rings may be different.

Preferably, the inner multi-layer pressure ring can be formed by injection molding, pouring molding, processing molding, 3D printing molding, or rotational molding according to the material.

As a preference, any supporting material or structure can be added to the inner pressure bearing ring, as shown in FIG. 5 .

Preferably, various holes or patterns are formed on the surface of the material by machining or other methods in the pre-ring process during the manufacturing process of the inner pressure bearing ring.

As a preference, in the ring-forming process in the manufacturing process of the inner pressure ring, the material is made into a circular ring-shaped part through machining (metal type), injection molding (polymer composite material type), and casting (polymer composite material type) .

Preferably, the surface treatment step in the manufacturing process of the inner pressure bearing ring is to perform surface treatment to roughen the surface, and then apply or spray the adhesive and let it dry in the air.

Preferably, in the composite process of the inner pressure ring manufacturing process, the pressure rings of the same diameter are combined into one body, and the layers are connected by mechanical connection.

Tires with an internal pressure ring structure have the following characteristics. (1) Tires with a pressure ring structure are more suitable for the production process of liquid raw materials. (2) Substituting the steel wire belt layer simplifies production, greatly improves process control level and fault tolerance, and greatly reduces investment in fixed assets; (3) does not use (4) The overall pressure-bearing capacity of the tire is improved; (5) The introduction of the pressure-bearing ring makes the tread more stable during the rolling process, improving the wear resistance and service life; ( 6) The pressure-bearing ring can be customized in batches, and the production efficiency is greatly improved; (7) Combining the molding process in the patent CN110561979A, the use of the internal pressure-bearing ring can realize the unmanned production of tires; (8) the use of the internal pressure-bearing ring, More tire structures can be extended, suitable for different occasions. (9) The pressure ring can use various materials with high strength, such as metal, polymer, and carbon fiber, which expands the application range of tire materials. (10) Other functional external parts can be added on the inner and outer sides of the pressure ring.

The pressure-bearing ring inside the tire provided by the present invention simplifies the tire manufacturing process, greatly improves the load-carrying performance of the tire, and is more suitable for the process of using liquid raw materials to produce tires. The pressure-bearing ring is suitable for various types of solid tires, pneumatic tires, retreaded tires, including car tires, truck tires, engineering tires, giant tires and special tires, etc., especially suitable for slower speed, higher load engineering tires and giant tire.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that are required in the embodiments. Obviously, the accompanying drawings in the following description are only described in the present invention For some embodiments of the present invention, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is a schematic cross-sectional view of a tire with a pressure ring;

Figure 2 is a schematic diagram of the shape of holes on the surface of the pressure ring;

Fig. 3 is a schematic diagram of the protrusion on the surface of the pressure bearing ring;

Fig. 4 is a schematic diagram of a multi-layer pressure ring;

Figure 5 is a schematic diagram of the inner and outer reinforcement structures of the pressure ring;

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the words "comprising..." or "comprising..." does not exclude the presence of additional elements in the process, method, article or terminal device comprising said element. In addition, in this article, "greater than", "less than", "exceeding" and so on are understood as not including the original number; "above", "below", "within" and so on are understood as including the original number.

Taking the 12.00-10 forklift tire specification as an example, the manufacturing methods of different types of pressure rings are as follows

Example 1

Take the steel material spring steel as an example for description.

Pre-ring process: use laser cutting steel sheet, the length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring by a bending machine, connect the two ends by welding, polish the welding joint, and polish and smooth both sides.

Surface treatment process: roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 2

Take the pressure ring with round holes on the surface of steel material spring steel as an example to describe.

Pre-ring process: Use laser cutting to cut small circles on the spring steel to form a long steel sheet with a certain size and round holes. The length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring by a bending machine, connect the two ends by welding, polish the welding joint, and polish and smooth both sides.

Surface treatment process: roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 3

Take the pressure ring with strip holes on the surface of steel material spring steel as an example to describe.

Pre-ring process: use laser cutting to cut strip holes on the spring steel to form a long steel sheet with strip holes of a certain size. The length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring by a bending machine, connect the two ends by welding, polish the welding joint, and polish and smooth both sides.

Surface treatment process: roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 4

Take the spring steel double-layer pressure ring made of steel as an example for description.

Pre-ring process: Use laser cutting to cut small circles on the spring steel to form long steel sheets with round holes in a certain size. The lengths of the two steel sheets are 157cm and 156.5cm respectively, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring through a bending machine, connect the two ends by welding, and polish the welding joint.

Surface treatment process: Roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry.

Composite process: Composite pressure rings with different diameters into one, and mechanically connect the layers, as shown in Figure 4. According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 5

The internal and external reinforcement structure of spring steel bearing ring made of steel material is described as an example.

Pre-ring process: Use laser cutting to cut small circles on the spring steel to form a long steel sheet with a certain size and round holes. The length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring through a bending machine, connect the two ends by welding, and polish the welding joint. Fix steel rings on the inside and outside of the ring for reinforcement, as shown in Figure 5.

Surface treatment process: roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 6

Take the flange reinforcement structure of spring steel pressure ring made of steel as an example to describe.

Pre-ring process: Use laser cutting to cut small circles on the spring steel to form a long steel sheet with a certain size and round holes. The length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

Ring forming process: bend the spring steel strip into a ring through a bending machine, connect the two ends by welding, and polish the welding joint. Add flange structures on both sides of the ring for reinforcement.

Surface treatment process: roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 7

The injection molding process of the high-strength polymer material TPU as the bearing ring is described as an example.

Ring forming process: Use an injection molding machine to directly inject rings with various holes or shapes on the surface in the mold.

Surface treatment process: roughen the surface of the polymer ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 8

The high-strength polymer material CPU is used as an example to describe the casting process of the pressure ring.

Ring forming process: the casting process is used to cast rings with various holes or shapes on the surface in the mold.

Surface treatment process: roughen the surface of the polymer ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

Example 9

Take steel material spring steel and polymer TPU material composite double-layer pressure ring as an example to describe.

Pre-ring process: Use laser cutting to cut small circles on the spring steel to form a long steel sheet with a certain size and round holes. The length of the steel sheet is 157cm, the width of the steel sheet is 25cm, and the thickness is 0.5cm.

The inner ring is injection molded with TPU. Use an injection molding machine to directly inject rings with various holes or shapes on the surface in the mold.

Ring forming process: bend the spring steel strip into a ring through a bending machine, connect the two ends by welding, and polish the welding joint.

Surface treatment process: Roughen the surface of the spring steel ring, then apply epoxy adhesive, and blow it with hot air until it is dry.

Composite process: composite pressure rings of different diameters into one, and connect the layers with screws. Example 10

Take steel material spring steel and polymer wrapped pressure ring as an example to describe.

Ring forming process: Embedding a steel pressure-bearing ring in the injection mold, the width of the pressure-bearing ring is 25cm, and the thickness is 0.5cm. Use an injection molding machine to inject TPU polymer material into the mold, cool, and the pressure ring is completed.

Surface treatment process: roughen the surface of the polymer ring, then apply epoxy adhesive, and blow it with hot air until it is dry, and it is completed.

According to the patent CN110561979A method, it is put into the mold to realize tire molding.

In the above technical solution, the tire bearing ring and the manufacturing method provided by the present invention have the following beneficial effects:

Tires with an internal pressure ring structure have the following characteristics. (1) Tires with a pressure ring structure are more suitable for the production process of liquid raw materials. (2) Substituting the steel wire belt layer simplifies production, greatly improves process control level and fault tolerance, and greatly reduces investment in fixed assets; (3) does not use (4) The overall pressure-bearing capacity of the tire is improved; (5) The introduction of the pressure-bearing ring makes the tread more stable during the rolling process, improving the wear resistance and service life; ( 6) The pressure-bearing ring can be customized in batches, and the production efficiency is greatly improved; (7) Combining the molding process in the patent CN110561979A, the use of the internal pressure-bearing ring can realize the unmanned production of tires; (8) the use of the internal pressure-bearing ring, More tire structures can be extended, suitable for different occasions. (9) The pressure ring can use various materials with high strength, such as metal, polymer, and carbon fiber, which expands the application range of tire materials. (10) Other functional external parts can be added on the inner and outer sides of the pressure ring.

The pressure-bearing ring inside the tire provided by the present invention simplifies the tire manufacturing process, greatly improves the load-carrying performance of the tire, and is more suitable for the process of using liquid raw materials to produce tires. The pressure-bearing ring is suitable for various types of solid tires, pneumatic tires, retreaded tires, including car tires, truck tires, engineering tires, giant tires and special tires, etc., especially suitable for slower speed, higher load engineering tires and giant tire.

Certain exemplary embodiments of the present invention have been described above only by way of illustration, and it goes without saying that those skilled in the art can use various methods without departing from the spirit and scope of the present invention. The described embodiments are modified. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims (10)

1. A tire pressure-bearing ring structure is characterized in that a pressure-bearing ring structure is arranged in a tire, the pressure-bearing ring is positioned below a tire tread, has a pressure-bearing function, and can keep the tire tread stable in character; the manufacturing of the pressure bearing ring made of different materials is mainly divided into a ring pre-forming process, a ring forming process, a surface treatment process and a compounding process.

2. The tire pressure ring structure of claim 1, wherein the tire inner pressure ring is made of polymer material, metal material, carbon fiber material or composite material.

3. A tire pressure ring structure according to claim 1, wherein said tire inner pressure ring surface has holes of various shapes, such as circular, triangular, oval, elongated and various shaped protrusions.

4. A tire pressure ring structure as in claim 1, wherein said tire inner pressure ring is provided in a single layer or a multi-layer structure.

5. The tire pressure ring structure of claim 1, wherein the inner multi-layer pressure ring has different widths and thicknesses.

6. The tire pressure ring structure of claim 1, wherein when the tire inner pressure ring is a multi-layer structure, adhesive connection, mechanical connection, and welding connection can be used between each layer.

7. The tire pressure ring structure of claim 1, wherein the inner pressure ring is made of different materials and can be formed by injection molding, casting molding, machining molding, 3D printing and rotational molding.

8. A tire pressure ring structure as in claim 1, wherein said inner pressure ring is wrapped with cords of various materials.

9. The tire pressure ring structure of claim 1, wherein the inner multi-layer pressure ring can be added with any support material or structure.

10. A tire pressure ring structure according to any one of claims 1 to 9, manufactured by a method comprising:

a ring pre-forming process: the working procedure is mainly to form various holes or patterns on the surface of the material by processing or other methods;

a ring forming process: the material is made into a circular annular part through machining or 3D printing (metal), injection molding (polymer composite materials) and pouring (polymer composite materials), and the joints are connected and processed;

a surface treatment process: performing surface treatment after the materials are looped to roughen the surface, performing smooth treatment on two sides, coating an adhesive, and drying;

a compounding procedure: combining bearing rings with different diameters into a whole, and connecting multiple layers by adopting a mechanical structure or a welding mode;

and placing the tire into a mold to realize tire molding according to the method of the patent CN 110561979A.

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