阅读说明：本技术 一种上下模不同胎圈直径的轮胎及其制造方法 (Tire with upper mold and lower mold with different bead diameters and manufacturing method thereof ) 是由 王�锋 滕雷 杨德建 杨才欣 陈雪梅 朱丽艳 陈东 吕建强 于 2020-04-03 设计创作，主要内容包括：本发明涉及胎圈加工技术领域,具体是一种上下模不同胎圈直径的轮胎及其制造方法,包括轮胎,所述轮胎包括胎冠、胎侧和胎圈,所述胎冠包括胎面橡胶层和胎冠增强件,所述胎侧从胎圈径向向外延伸至胎冠,所述胎圈外接有安装轮辋,所述胎圈包括两个具有不同尺寸的第一胎圈和第二胎圈,所述第一胎圈和第二胎圈与相应的安装轮辋相接触,从而将轮胎固定到安装轮辋上,所述胎冠内设置有若干道胎冠增强件,所述胎体增强件通过围绕在环形钢丝增强结构上从而锚固在相应位置的胎圈上。本申请有效解决了普通的轮胎因为胎圈部位尺寸的限制,实现轮胎两侧胎圈的锁止的目的,从而实现轮胎的生产。(The invention relates to the technical field of bead processing, in particular to a tire with upper and lower dies with different bead diameters and a manufacturing method thereof. The locking device effectively solves the problem that the locking of the tire beads on two sides of the tire is realized due to the limitation of the size of the tire bead part of the common tire, so that the production of the tire is realized.)

1. A tire with upper and lower dies with different bead diameters comprises a tire (1), wherein the tire (1) comprises a crown (30), a sidewall (50) and a bead (60), the bottom of the tire crown (30) is provided with a belting zone (11), the belting zone (11) comprises a zero-angle belting layer (12) and a small-angle belting layer (13), a sidewall connecting layer (15) is arranged on the outer side surface of the tire bead (60), a tire body (14) is arranged on the inner side area of the banding area (11), characterized in that the base of the tire body (14) is a tire bead (60), the inner side and the outer side of the tire bead (60) are respectively provided with an upper filling rubber (17) and a lower filling rubber (18), a steel wire mouth wrapping cloth (16) is arranged on the rubber surface layer of the upper filling rubber (17) and the lower filling rubber (18), and a wear-resistant rubber strip (19) is arranged on the outer side surface of the tire bead (60);

the crown (30) comprises a tread rubber layer (38) and a crown reinforcement (40), the sidewalls (50) extending radially outwards from the beads to the crown (30), the beads (60) being circumscribed by a mounting rim, the beads (60) comprising two first beads (61) and second beads (62) of different sizes, the first beads (61) and the second beads (62) being in contact with the respective mounting rim so as to fix the tyre to the mounting rim, a plurality of crown reinforcements (40) being provided in the crown (30), the carcass reinforcement (40) being anchored to the beads (60) in the respective position by being wound around an annular wire reinforcement structure.

2. A tyre with upper and lower moulds of different bead diameters as claimed in claim 1, wherein the crown reinforcement (40) consists of steel wires and nylon fibres and is circumferentially surmounted along the trajectory of the tyre (1).

3. A tire with upper and lower dies of different bead diameters as in claim 1, wherein the tread rubber layer (38) comprises a tread layer (31), a tread pattern (32) is arranged on the tread layer (31), a buffer rubber layer (33) is arranged below the tread layer (31), a rubber protective layer (34) is arranged below the buffer rubber layer (33), a crown connecting layer (35) is arranged below the rubber protective layer (34), a carcass protective layer (36) is arranged on the outer ring below the crown connecting layer (35), and the inner cavity of the carcass protective layer (36) is provided with a corresponding bead protective layer (37).

4. Tyre with upper and lower moulds of different bead diameters, according to claim 1, characterized in that inside the beads (60) there is arranged a corresponding building drum (10), said building drum (10) having on both sides different sized building blocks to meet different diameter wire ring clasps.

5. Tyre with upper and lower moulds of different bead diameters, according to claim 4, characterized in that the building drum (10) has different chamfer sizes at both side edges, wherein the radius of the chamfer at one side ranges from 0.1mm to 70mm and the radius of the chamfer at the other side ranges from 0.1mm to 50 mm.

6. A tyre with upper and lower moulds of different bead diameters according to claim 5, characterized in that the tyre (1) is externally connected with a ring-fastening disc (20), and the size of the ring-fastening disc (20) corresponds to the inch openings at two sides of the tyre.

7. A tire with upper and lower molds having different bead diameters according to claim 6, wherein the first bead (61) and the second bead (62) are arranged in the tire (1) and have different diameters, and the difference between the diameters of the first bead (61) and the second bead (62) on the left side and the right side is 0.5-1 inch.

8. A method for manufacturing tires with upper and lower molds having different bead diameters according to any one of claims 1 to 7, comprising the steps of:

the method comprises the following steps: preparing a forming drum (10) and a buckling ring disc (20) with corresponding sizes according to different sizes of tire beads, wherein the forming drum (10) has different left and right chamfering sizes, the radius of a side chamfering R1 is in the range of 0.1mm to 70mm, the radius of a side chamfering R2 is in the range of 0.1mm to 50mm, and the size (20) of the buckling ring disc is in one-to-one correspondence with the sizes of a first tire bead (61) and a second tire bead (62) used by a tire (1);

step two: the second bead (62) with a smaller diameter corresponds to the side I with a larger chamfer angle during molding, and the first bead (61) with a larger diameter corresponds to the side II with a smaller chamfer angle;

step three: during molding, the tire bead (60) is pushed by the ring fastening disc (20) to impact the molding drum (10), the left and right ring impacting is carried out synchronously, and after the ring impacting, the tire bead is fixed on the molding drum chamfers R1 and R2, so that the tire bead is not loosened and falls off.

Technical Field

The invention relates to the technical field of tire bead processing, in particular to a tire with upper and lower molds with different tire bead diameters and a manufacturing method thereof.

Background

The bead is also called a bead opening, and refers to a part of the tire, which is arranged on a rim, and consists of a bead core, a chafer and the like. It can bear the stretching force produced by internal pressure, and can overcome the transverse force action of tyre in turning running, so that the outer tyre does not come off the rim. Therefore, it must have high strength, compact and firm structure, and not easy to deform.

The bead has a generatrix with an axially inner end on a ring of greater diameter than the ring on which the axially outer end is located, this type of construction being particularly suitable for new types of tyre which, to a limited extent, can be used in low-pressure, even zero-pressure and virtually zero-pressure conditions, eliminating the risk of the tyre separating from the rim on which it is mounted.

Chinese patent (granted publication No.: CN1176816C) discloses a bead for a tire with increased flexibility, optimizing the carcass-type structure to form an elongation beyond the base of the cord ply towards the axis of rotation of the tire. In this case, since the inversion of the carcass-type structure is not indispensable for anchoring purposes, the inversion may be free of overlap of the annular cords along the structure, so that the whole carcass type is reinforced. But typically the bead sizes on both sides of the tire are consistent. Such a tire may be mounted on a conventional rim. But for some rims with special market demands, the diameters of the rims on two sides are different, and the like. The common tire cannot be normally installed due to the limitation of the size of the bead part. Therefore, a certain optimized design can be carried out on the radial tire on the basis of the patent.

Disclosure of Invention

The present invention is directed to a tire with upper and lower molds having different bead diameters and a method for manufacturing the same, which solves the above-mentioned problems of the prior art.

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

the tire with the upper mold and the lower mold having different bead diameters comprises a tire, wherein the tire comprises a tire crown, a tire side and a tire bead, a belt area is arranged at the bottom of the tire crown, a zero-angle belt layer and a small-angle belt layer are arranged in the belt area, a tire side connecting layer is arranged on the outer side of the tire bead, a tire body is arranged in the inner area of the belt area, the base of the tire body is the tire bead, an upper filling rubber and a lower filling rubber are respectively arranged on the inner side and the outer side of the tire bead, a steel wire wrapping cloth is arranged on the rubber surface layers of the upper filling rubber and the lower filling rubber, a wear-resistant rubber strip is arranged on the outer side of the tire bead, the tire crown comprises a tire tread rubber layer and a tire crown reinforcing part, the tire side extends outwards from the tire bead to the radial direction, a mounting tire crown is externally connected with the tire bead, the tire bead comprises a first tire bead and a second, to fix the tyre to a mounting rim, a plurality of crown reinforcements being provided in the crown, the carcass reinforcements being anchored to the bead in corresponding positions by being wound around an annular steel wire reinforcing structure.

As a further scheme of the invention: the crown reinforcement is composed of steel wires and nylon fibers and is circumferentially overlaid along the tire track.

As a further scheme of the invention: the tire tread rubber layer comprises a tire tread layer, tire tread patterns are arranged on the tire tread layer, a buffer rubber layer is arranged below the tire tread layer, a rubber protective layer is arranged below the buffer rubber layer, a tire crown connecting layer is arranged below the rubber protective layer, a tire body protective layer is arranged on the outer ring below the tire crown connecting layer, and a corresponding tire bead protective layer is arranged in an inner cavity of the tire body protective layer.

As a further scheme of the invention: and the inner sides of the tire beads are provided with corresponding forming drums, and forming pads with different sizes are arranged on two sides of each forming drum so as to meet the requirements of steel wire ring buckling rings with different diameters.

As a further scheme of the invention: the edge chamfers on two sides of the forming drum are different in size, the radius of the chamfers on one side ranges from 0.1mm to 70mm, and the radius of the chamfers on the other side ranges from 0.1mm to 50 mm.

As a further scheme of the invention: the tyre is externally connected with a buckling ring disc, and the size of the buckling ring disc corresponds to the inch openings on the two sides of the tyre.

As a further scheme of the invention: the diameters of a first tire bead and a second tire bead arranged in the tire are different, and the difference between the diameters of the first tire bead and the second tire bead on the left side and the right side is 0.5-1 inch.

The invention also discloses a manufacturing method of the tire with the upper mold and the lower mold with different bead diameters, which comprises the following steps:

the method comprises the following steps: preparing a forming drum and a buckling ring disc with corresponding sizes according to different sizes of tire beads, wherein the forming drum has different left and right chamfer sizes, the radius value of a side chamfer R1 is in the range of 0.1mm to 70mm, the radius value of a side chamfer R2 is in the range of 0.1mm to 50mm, and the sizes of the buckling ring discs are in one-to-one correspondence with the sizes of a first tire bead and a second tire bead used by a tire;

step two: during molding, the second tire bead with smaller diameter corresponds to the I side with larger chamfer angle, and the first tire bead with larger diameter corresponds to the II side with smaller chamfer angle;

step three: during molding, the tire beads are pushed by the buckling ring disc to impact the molding drum, the left and right ring impacting is carried out synchronously, and the tire beads are fixed on the chamfers R1 and R2 of the molding drum after ring impacting, so that the tire beads are free from loosening and falling off. The remaining building steps are consistent with conventional tires.

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

the most remarkable characteristic of the invention is that the tire with two sides with different bead diameters is designed, the bead comprises a first bead and a second bead with different sizes, and the first bead and the second bead are contacted with corresponding mounting rims, so that the tire is fixed on the mounting rims, and the problem that the normal tire cannot be normally mounted due to the limitation of the size of the bead part is effectively solved.

The tire bead locking device is characterized in that a first tire bead mechanism and a second tire bead mechanism are assembled by a forming drum and a buckling ring disc correspondingly, and the forming drum, the buckling ring disc and other equipment related to the manufacture of the tire bead are designed and improved correspondingly in size in the tire forming process, so that the purpose of locking the tire beads on two sides of the tire is achieved, and the tire is produced.

The tire bead protection device is designed to be internally and externally provided with multiple protection mechanisms, and corresponding wrapping structures are designed for tire bodies and tire bead areas, so that the overall stability effect is improved, and the tire bead areas are effectively protected.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. Also, the drawings and the description are not intended to limit the scope of the present concepts in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments.

FIG. 1 is a schematic view of the tire structure of the present invention.

Fig. 2 is a schematic view of the structure of the bead in the present invention.

FIG. 3 is a schematic view of the construction of the crown of the present invention.

FIG. 4 is a first assembly view of the operation of the molding apparatus of the present invention.

FIG. 5 is a first assembly view of the operation of the molding apparatus of the present invention.

FIG. 6 is a schematic illustration of the drum size matching of the present invention.

In the figure: 1-tire, 10-forming drum, 20-ring buckle disc, 30-tire crown, 40-tire crown reinforcement, 50-tire side, 60-tire bead, 11-lacing zone, 12-zero-degree angle belt layer, 13-small-angle belt layer, 14-tire body, 15-tire side connecting layer, 16-steel wire seam allowance, 17-upper filling rubber, 18-lower filling rubber, 19-wear-resistant rubber strip, 31-tire tread layer, 32-tire tread pattern, 33-buffer rubber layer, 34-rubber protective layer, 35-tire crown connecting layer, 36-tire body protective layer, 37-tire bead protective layer, 61-first tire bead and 62-second tire bead.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, examples of which are shown in the drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.