CN114228404A

CN114228404A - Low-section tire belt ring for heavy load application and manufacturing method and application thereof

Info

Publication number: CN114228404A
Application number: CN202111464306.9A
Authority: CN
Inventors: 陈宪斌
Original assignee: Taikaiying Qingdao Special Tire Technology Research And Development Co ltd
Current assignee: Taikaiying Qingdao Special Tire Technology Research And Development Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-03-25

Abstract

The invention discloses a low-section tire belt ring for heavy load and a manufacturing method and application thereof, belonging to the technical field of engineering machinery tires. The technical scheme is as follows: the belt comprises a first belt layer, a second belt layer, a third belt layer, a fourth belt layer, a fifth belt layer and a sixth belt layer; the first belt ply and the sixth belt ply are both formed by two symmetrically arranged half-layer structures, and the rest belt plies are all of a whole-layer structure penetrating through the tire crown; the end portions of the belt layers are arranged in a staggered manner. The tire produced by the belt loop has high tire tread footprint rectangular rate, uniform crown stress and low heat generation in use; the crown part of the inflated tire expands uniformly, the inflated foreign body has stable size, and the service life is longer.

Description

Low-section tire belt ring for heavy load application and manufacturing method and application thereof

Technical Field

The invention relates to the technical field of engineering machinery tires, in particular to a low-section tire belt ring for heavy load application and a manufacturing method and application thereof.

Background

The current low-profile tires for heavy-duty use all have the following problems: the tire has irregular impression after inflation and uneven crown stress, and under the condition of heavy load, the tire is easy to have early problems to cause failure, so that the requirement of a customer cannot be met.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the low-section tire belt ring for heavy load and the manufacturing method and application thereof are provided, the use performance of the tire is improved, the comprehensive performance of the tire is improved, and the use cost of customers is reduced.

In a first aspect, the present invention provides a low-profile tire belt ring for heavy load use, comprising a first belt layer, a second belt layer, a third belt layer, a fourth belt layer, a fifth belt layer and a sixth belt layer; the first belt ply and the sixth belt ply are both formed by two symmetrically arranged half-layer structures, and the rest belt plies are all of a whole-layer structure penetrating through the tire crown; the end portions of the belt layers are arranged in a staggered manner.

Preferably, the two ends of the second belt layer are respectively adhered with a clamping glue, and the ends of the third belt layer, the fourth belt layer and the fifth belt layer are adhered with the clamping glue.

Preferably, the thickness of the doubling is 3-8mm, and the width is 90-120 mm.

Preferably, said one half-layer structure of the first belt layer has a width of 25-35% of the width of the second belt layer, an angle of 15-18 °, the direction being left-hand.

Preferably, said one half-structure of the sixth belt has a width of 25-35% of the width of the second belt, an angle of 15-18 °, the direction being right.

In a second aspect, the present invention provides a method for manufacturing the above belt loop, including the following steps:

1) cutting: cutting off each belt ply according to the size requirement;

2) auxiliary drum fitting: storing each layer of belted layer on a feeding frame, and setting parameters; firstly, attaching a first belt layer, and sewing a joint; then the second belted layer is attached, and the joint is sewn; secondly, laminating the doubling at the end part of the second belt ply; and then sequentially attaching the rest belt layers to finish the manufacture of the belt ring.

In a third aspect, the invention also provides an application of the belt ring, the belt ring is compounded with the tire body barrel, and then the tire tread is wound for rolling; and vulcanizing the molded tire blank in a vulcanizing machine, and producing a finished tire after vulcanization.

Compared with the prior art, the invention has the following beneficial effects:

the tire produced by the belt ring has the advantages of high tread footprint rectangular rate, uniform crown stress and low heat generation; the crown part of the inflated tire expands uniformly, the inflated foreign body has stable size, and the service life is longer.

Drawings

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a second schematic structural diagram of the present invention.

In the figure, 1-a first belt layer, 2-a second belt layer, 3-a third belt layer, 4-a fourth belt layer, 5-a fifth belt layer, 6-a sixth belt layer and 7-an interlayer adhesive.

Detailed Description

Example 1

As shown in fig. 1, the present embodiment provides a low-profile tire belt ring for heavy load use, including a first belt layer 1, a second belt layer 2, a third belt layer 3, a fourth belt layer 4, a fifth belt layer 5, and a sixth belt layer 6; the first belt ply 1 and the sixth belt ply 6 are both formed by two symmetrically arranged half-layer structures, and the rest belt plies are all of a whole layer structure penetrating through a tire crown; the end portions of the belt layers are arranged in a staggered manner.

The tire with the ultra-wide low section has the beneficial effects that the tire impressions of the tire with the ultra-wide low section are butterfly-shaped (the shoulder of the circumferential impression is wide, and the crown of the tire is narrow) after being inflated, so that the stress of the shoulder of the tire is increased under heavy load, and further the shoulder is delaminated; in addition, the shoulder part has more end points of the belt layer, and under heavy load, the end points are free ends, so that the motion amplitude is larger under the condition of stress. In order to ensure that the fixity of the end points or the movement amplitude is minimized, the embodiment performs the restraint by adding the first belt layer 1 and the sixth belt layer 6 to form a belt ring, so that the end part is more stable when the tire runs.

In addition, the purpose that each belt layer end part is staggered is that: the belt ends are free ends where the tire is moving, and these changes in movement result in extreme forces being applied to the ends. If these ends are aligned above each other, the belt is as if it were an iron plate and the rubber is soft, so that the hardness becomes excessively abrupt, resulting in the ends being highly susceptible to separation of the steel wires from the rubber and resulting in delamination failure. Therefore, in order to make the soft and hard transition and reduce the stress, the ends of the belt layers need to be separated according to a certain difference.

Example 2

As shown in fig. 2, on the basis of embodiment 1, an insert 7 is respectively adhered above two end portions of the second belt layer 2, the thickness of the insert 7 is 3-8mm, the width is 90-120mm, and the end portions of the third belt layer 3, the fourth belt layer 4 and the fifth belt layer 5 are adhered on the insert 7; the rubber material used for the doubling is the same as steel silk glue.

The glue 7 of the present embodiment serves two purposes: (1) flattening the belt ply layer on the top layer to ensure the flatness of the belt ply layer; (2) the function of separating the upper belt layer from the lower belt layer is achieved. The upper and lower belted layers are isolated by adopting the sandwiched rubber, so that the minimum stress of the end points of the upper and lower belted layers can be ensured, the performance of the tire is ensured, and the problem of early delamination and failure is avoided.

Example 3

On the basis of example 1, said one half-structure of the first belt 1 has a width of 30% of the width of the second belt 2, an angle of 15 ° -18 °, the direction being left; one half-layer structure of said sixth belt layer 6 has a width of 30% of the width of the second belt layer 2, an angle of 15-18 deg., and a direction of right.

The angle of the belt layer is based on the tire body, the tire crown tire cord lines are parallel to each other, and the included angle between the belt layer and the tire crown tire cord lines is the angle of the belt layer.

The left direction of the belt layer means that the upper end point of the bevel edge of the belt layer is on the right hand side, and the lower end point is on the left hand side; the right direction of the belt means that the upper end point of the belt slant is on the left hand side and the lower end point is on the right hand side.

The first belt layer and the sixth belt layer are designed to be in the crossing direction, so that the constraint force of the whole belt ring on the tire can be increased, and the tire burst can be prevented.

Example 4

On the basis of embodiment 2, the method for manufacturing the low-profile tire belt loop for heavy-duty use comprises the following steps:

1) cutting: cutting off each belt ply according to the size requirement;

2) auxiliary drum fitting: storing each layer of belted layer on a feeding frame, and setting parameters; firstly, attaching a first belt ply 1, and sewing a joint; then the second belt ply 2 is attached, and the joint is sewed; secondly, laminating the doubling 7 at the end part of the second belt ply layer 2; and then sequentially attaching the rest belt layers to finish the manufacture of the belt ring.

Example 5

On the basis of example 4, the belt rings were applied to the production of tires: compounding the belt ring and the tire body barrel, and then winding the tire tread for rolling; and vulcanizing the molded tire blank in a vulcanizing machine, and producing a finished tire after vulcanization.

Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A low-profile tyre belt ring for heavy load use, characterized by comprising a first belt layer (1), a second belt layer (2), a third belt layer (3), a fourth belt layer (4), a fifth belt layer (5) and a sixth belt layer (6); the first belt ply (1) and the sixth belt ply (6) are both composed of two symmetrically arranged half-layer structures, and the rest belt plies are all of a whole layer structure penetrating through a tire crown; the end portions of the belt layers are arranged in a staggered manner.

2. The low-profile tire belt ring for heavy load use according to claim 1, wherein the second belt layer (2) is bonded with an insert (7) over both ends thereof, and the third belt layer (3), the fourth belt layer (4) and the fifth belt layer (5) are bonded with ends thereof to the insert (7).

3. The low-profile tire belt loop for heavy load use according to claim 2, wherein the thickness of the rubber insert (7) is 3-8mm and the width is 90-120 mm.

4. A low-profile tire belt ring for heavy load use according to claim 1, wherein said first belt layer (1) has a half-ply structure with a width of 25-35% of the width of the second belt layer (2), an angle of 15 ° -18 °, and a left direction.

5. A low-profile tire belt ring for heavy load use according to claim 1, characterized in that said sixth belt layer (6) has a half-structure with a width of 25-35% of the width of the second belt layer (2), an angle of 15 ° -18 °, the direction being right.

6. The method of manufacturing a low-profile tire belt loop for heavy-duty use of claim 2, comprising the steps of:

cutting: cutting off each belt ply according to the size requirement;

auxiliary drum fitting: storing each layer of belted layer on a feeding frame, and setting parameters; firstly, a first belt ply (1) is attached, and joints are sewn; then the second belt ply (2) is attached, and the joint is sewed; secondly, laminating the doubling (7) at the end part of the second belt ply (2); and then sequentially attaching the rest belt layers to finish the manufacture of the belt ring.

7. Use of a low-profile tire belt ring for heavy load applications according to claim 2, wherein the belt ring is combined with a carcass drum and then wound around a tread for rolling; and vulcanizing the molded tire blank in a vulcanizing machine, and producing a finished tire after vulcanization.