阅读说明：本技术 一种免充气轮胎的结构和制作工艺 (Structure and manufacturing process of inflation-free tire ) 是由 孙智勇 于 2019-11-11 设计创作，主要内容包括：一种免充气轮胎的结构,包括外胎体和内胎体；外胎体设置在内胎体的外部,内胎体与外胎体粘接连接；外胎体的侧面设置有凸起部或凹陷部；凸起部设置呈椭圆形、圆形、三角形、四边形、五边形或六边形；凹陷部设置呈大圆加两个小圆形或大圆加两个小三角形；外胎体为橡胶材料；内胎体的结构为圆形,但不限于圆形；内胎体的结构为空心圆管或实心圆管；内胎体为发泡材料；本发明内外胎体不同的材料,外层材料耐磨,内层材料弹性好,轮胎的结构内外均匀对称,没有任何的薄弱点,同时生产工艺稳定,加工的废品极少,更加经济环保。(A structure of a non-pneumatic tire comprises an outer tire body and an inner tire body; the outer tire body is arranged outside the inner tire body, and the inner tire body is connected with the outer tire body in an adhesive manner; the side surface of the outer tire body is provided with a convex part or a concave part; the convex part is arranged to be oval, round, triangular, quadrilateral, pentagonal or hexagonal; the concave part is arranged to be a big circle plus two small circles or a big circle plus two small triangles; the outer matrix body is made of rubber material; the structure of the inner carcass is circular, but is not limited to circular; the structure of the inner matrix is a hollow circular tube or a solid circular tube; the inner matrix body is made of foaming material; the tire has the advantages that the inner tire body and the outer tire body are made of different materials, the outer layer material is wear-resistant, the inner layer material is good in elasticity, the structure of the tire is uniform and symmetrical inside and outside, no weak point exists, the production process is stable, few processed waste products exist, and the tire is more economical and environment-friendly.)

1. A structure of a non-pneumatic tire, characterized by comprising an outer carcass (2) and an inner carcass (1);

the outer tire body (2) is arranged outside the inner tire body (1), and the inner tire body (1) is connected with the outer tire body (2) in an adhesion manner;

the side surface of the outer tire body (2) is provided with a convex part or a concave part; the convex part is arranged to be oval, round, triangular, quadrilateral, pentagonal or hexagonal; the concave part is arranged to be a big circle plus two small circles or a big circle plus two small triangles; the outer tire body (2) is made of rubber material;

the structure of the inner tyre body (1) is circular, but is not limited to the circular shape; the structure of the inner matrix (1) is a hollow circular tube or a solid circular tube; the inner matrix (1) is made of foaming material.

2. Structure of an airless tire as claimed in claim 1, wherein the inner carcass (1) is provided in an oval shape.

3. Structure of an airless tire as claimed in claim 1, wherein the inner carcass (1) is provided in a quadrilateral shape.

4. Structure of an airless tire as claimed in claim 1, wherein the inner carcass (1) is arranged in a hexagonal shape.

5. Structure of an airless tire as claimed in claim 1, wherein the inner carcass (1) is provided in an octagonal shape.

6. The structure of the non-pneumatic tire according to the claims 1-5 further provides a manufacturing process of the non-pneumatic tire, which is characterized by comprising the following specific steps:

s1, placing a middle plate between the upper die and the lower die, wherein the perpendicular bisector of the middle plate is superposed with the perpendicular bisector of the upper die and the lower die; keeping the upper die and the lower die in a die closing state;

s2, injecting a rubber material into the die cavity by using a rubber injection machine, and maintaining the constant pressure for 10 seconds;

s3, opening the upper die and the lower die, and taking out the middle plate;

s4, manufacturing a foaming inner tire body (1) matched with the outer tire body (2) in advance by using a foaming material and adopting a vulcanization foaming process according to needs;

s5, moving the foamed inner tire body (1) into the cavity with the middle plate removed, and closing the mold again;

s6, maintaining constant temperature and pressure for 400 seconds, vulcanizing the outer tire body (2), and fusing the inner tire body (1) and the inner wall of the outer tire body (2) together;

and S7, after cooling to room temperature, taking out the tire, and completing production.

7. The process of claim 6, wherein the tread pattern and sidewalls in the mold cavity are fully formed when the mold is opened in S3.

8. The structure and the manufacturing process of the non-pneumatic tire according to claim 1, wherein the expansion ratio and the hardness of the inner carcass (1) are set in advance according to the desired product.

Technical Field

The invention relates to the technical field of tires, in particular to a structure and a manufacturing process of an inflation-free tire.

Background

The general non-pneumatic tire adopts a structural damping design, and the manufacturing process of the non-pneumatic tire is that the whole tire is made of one material and is formed in one step no matter the non-pneumatic tire is of a transverse honeycomb perforation structure and a longitudinal multi-cavity structure. 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.

In order to solve the above problems, the present application provides a structure and a manufacturing process of a non-pneumatic tire.

Disclosure of Invention

Objects of the invention

The invention provides a structure and a manufacturing process of a non-pneumatic tire, aiming at solving the technical problems that compared with a pneumatic tire, the non-pneumatic tire in the background technology has poorer comfort level, so that large-area popularization and use are influenced, the weight of a general non-pneumatic tire is heavier, the weight of a whole vehicle can be increased, the energy consumption of the vehicle is increased, and the endurance mileage of the vehicle is reduced.

(II) technical scheme

In order to solve the problems, the invention provides a structure of a non-pneumatic tire, which comprises an outer tire body and an inner tire body;

the outer tire body is arranged outside the inner tire body, and the inner tire body is connected with the outer tire body in an adhesive manner;

the side surface of the outer tire body is provided with a convex part or a concave part; the convex part is arranged to be oval, round, triangular, quadrilateral, pentagonal or hexagonal; the concave part is arranged to be a big circle plus two small circles or a big circle plus two small triangles; the outer matrix body is made of rubber material;

the structure of the inner carcass is circular, but is not limited to circular; the structure of the inner matrix is a hollow circular tube or a solid circular tube; the inner matrix is made of foaming material.

Preferably, the inner carcass is disposed in an oval shape.

Preferably, the inner carcass is disposed in a quadrilateral shape.

Preferably, the inner carcass is disposed in a hexagonal shape.

Preferably, the inner carcass is provided in an octagonal shape.

A manufacturing process of a non-pneumatic tire comprises the following specific steps:

s1, placing a middle plate between the upper die and the lower die, wherein the perpendicular bisector of the middle plate is superposed with the perpendicular bisector of the upper die and the lower die; keeping the upper die and the lower die in a die closing state;

s2, injecting a rubber material into the die cavity by using a rubber injection machine, and maintaining the constant pressure for 10 seconds;

s3, opening the upper die and the lower die, and taking out the middle plate;

s4, manufacturing a foamed inner tire body matched with the outer tire body in advance by using a foaming material and adopting a vulcanization foaming process according to needs;

s5, moving the foamed inner tire body into the cavity with the middle plate moved out, and closing the mold again;

s6, maintaining constant temperature and pressure for 400 seconds, vulcanizing the outer tyre body, and fusing the inner tyre body and the inner wall of the outer tyre body together;

and S7, after cooling to room temperature, taking out the tire, and completing production.

Preferably, the tread pattern and the sidewall in the mold cavity are completely molded when the mold is opened in S3.

Preferably, the expansion ratio and hardness of the inner carcass are set in advance according to the desired product.

The technical scheme of the invention has the following beneficial technical effects: the outer layer material is wear-resistant, and the inner layer material is good in elasticity, so that the problem that the inflation-free tire is comfortable is perfectly solved. The sizes of the inner tire body and the outer tire body can be designed according to the use conditions, the outer tire body can be made thinner, and the inner tire body is made larger, so that the comfortableness can be increased, the weight of the whole tire is greatly reduced, the materials are saved, the cost is reduced, the design of more portability is provided for customers, the quality of the whole vehicle is reduced, and the weight is reduced by about 20% compared with the weight of the tires of the same type. The tire has the advantages that the inside and the outside of the structure of the tire are uniformly and symmetrically arranged, no weak point exists, the transverse section and the longitudinal section of the tire are consistent at any part of the tire, the problem of poor dynamic balance of the conventional non-pneumatic tire is solved, the production process is stable, few waste products are processed, and the tire is more economic and environment-friendly.

Drawings

Fig. 1 is a schematic structural diagram of a non-pneumatic tire according to the present invention.

FIG. 2 is a schematic side view of an outer carcass of a non-pneumatic tire according to the present invention.

Fig. 3 is a second schematic side view of the outer carcass of the non-pneumatic tire according to the present invention.

Fig. 4 is a schematic view of the internal structure of the non-pneumatic tire of the present invention.

Fig. 5 is a schematic structural diagram of an inner carcass of a non-pneumatic tire according to the present invention.

Fig. 6 is a second schematic structural view of the inner carcass of the non-pneumatic tire according to the present invention.

Fig. 7 is a third schematic structural diagram of an inner carcass of a non-pneumatic tire according to the present invention.

Fig. 8 is a fourth schematic structural diagram of the inner carcass of the non-pneumatic tire of the present invention.

Reference numerals: 1. an inner carcass; 2. an outer carcass.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-8, the present invention provides a structure of a non-pneumatic tire, which comprises an outer tire casing 2 and an inner tire casing 1;

the outer tire body 2 is arranged outside the inner tire body 1, and the inner tire body 1 is connected with the outer tire body 2 in an adhesion manner;

the side surface of the outer tire body 2 is provided with a convex part or a concave part; the convex part is arranged to be oval, round, triangular, quadrilateral, pentagonal or hexagonal; the concave part is arranged to be a big circle plus two small circles or a big circle plus two small triangles; the outer tire body 2 is made of rubber material;

the structure of the inner carcass 1 is circular, but not limited to circular; the structure of the inner matrix 1 is a hollow circular tube or a solid circular tube; the inner matrix 1 is made of foaming material.

In an alternative embodiment, the inner carcass 1 is provided in an oval shape.

In an alternative embodiment, the inner carcass 1 is provided in a quadrangular shape.

In an alternative embodiment, the inner carcass 1 is arranged in a hexagonal shape.

In an alternative embodiment, the inner carcass 1 is provided in an octagonal shape.

A manufacturing process of a non-pneumatic tire comprises the following specific steps:

s1, placing a middle plate between the upper die and the lower die, wherein the perpendicular bisector of the middle plate is superposed with the perpendicular bisector of the upper die and the lower die; keeping the upper die and the lower die in a die closing state;

s2, injecting a rubber material into the die cavity by using a rubber injection machine, and maintaining the constant pressure for 10 seconds;

s3, opening the upper die and the lower die, and taking out the middle plate;

s4, manufacturing a foamed inner tire body 1 matched with the outer tire body 2 in advance by using a foaming material and adopting a vulcanization foaming process according to needs;

s5, moving the foamed inner tire body 1 into the cavity with the middle plate removed, and closing the mold again;

s6, maintaining constant temperature and pressure for 400 seconds, vulcanizing the outer tire body 2, and fusing the inner tire body 1 and the inner wall of the outer tire body 2 together;

and S7, after cooling to room temperature, taking out the tire, and completing production.

In an alternative embodiment, the tread pattern and sidewalls in the mold cavity are fully formed when the mold is opened in S3.

In an alternative embodiment, the expansion ratio and hardness of the inner carcass 1 are set in advance according to the desired product.

In the invention, the outer tyre body 2 is made of wear-resistant, weather-resistant and odorless high-quality rubber material, so that the performance indexes of wear resistance, weather resistance, skid resistance and the like of the tyre can meet the requirements. The inner tyre body 1 is made of foaming materials, such as EVA, EPDM, rubber and the like, and the materials are required to be uniformly foamed, tear-resistant, high-temperature-resistant and the like, so that the ground surface of the tyre is wear-resistant and skid-resistant, and the tyre is good in internal elasticity, compression resistance and temperature resistance. The inner tire body and the outer tire body 2 are made of different materials, so that different functions are brought, and the problem that the existing comfort level of the inflation-free tire is not good is perfectly solved. The inner tire body 2 and the outer tire body 2 are separately designed, and respective parameters and performances such as the wall thickness and the strength of the outer tire body 2 and the foaming multiplying power, the hardness and the rebound resilience of the inner tire body 1 can be respectively optimized, so that the tire is wear-resistant, compression-resistant, good in comfort degree and light in weight to the maximum extent, the product reaches the weight of the current pneumatic tire, and the product is a lead in the current non-pneumatic tire. The whole structure is uniform inside and outside, the cross section and the longitudinal section of the whole tire are symmetrical, and the dynamic balance performance is high. The tyre is integrally formed, and because the foaming material of the inner tyre body 1 and the material of the outer tyre body 2 are fused, the bonding is very good, and the condition that the inner tyre body is cracked but the outer tyre body is not seen can not occur. The inner tyre body 2 and the outer tyre body 2 are made of different materials, the outer layer material is wear-resistant, and the inner layer material is good in elasticity, so that the problem that the non-pneumatic tyre is comfortable is perfectly solved. The sizes of the inner tire body and the outer tire body 2 can be designed according to the use conditions, the outer tire body 2 can be thinner, and the inner tire body 1 can be larger, so that the comfortableness can be increased, the weight of the whole tire is greatly reduced, the materials are saved, the cost is reduced, the design of more portability is provided for customers, the quality of the whole vehicle is reduced, and the weight is reduced by about 20% compared with the weight of the same type of tire. The tire has the advantages that the inside and the outside of the structure of the tire are uniformly and symmetrically arranged, no weak point exists, the transverse section and the longitudinal section of the tire are consistent at any part of the tire, the problem of poor dynamic balance of the conventional non-pneumatic tire is solved, the production process is stable, few waste products are processed, and the tire is more economic and environment-friendly.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.