CN211416379U

CN211416379U - Tire molding capsule

Info

Publication number: CN211416379U
Application number: CN201922452318.4U
Authority: CN
Inventors: 杨国营; 徐国峰; 杨同围; 王志康; 张明增; 朱磊
Original assignee: Sailun Dongying Tyre Co Ltd
Current assignee: Sailun Dongying Tyre Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-04
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a tire shaping capsule, including the utricule, utricule outside-in is equipped with antiseized layer, resistance to pressure layer and cord layer in proper order, the cord layer is established to double-deck cord fabric cord structure to one side, and it includes top layer cord layer and bottom cord layer, and the cord that is located the top layer cord layer and the cord intercrossing that is located the bottom cord layer, the utility model provides the high resistance to pressure and the wearability of capsule have effectively avoided the capsule to cause the cord fracture because of inflatable expansion, satisfy on-the-spot production technology requirement, and the cord that passes through preferred top layer cord layer and the cord layer of bottom cord layer forms's contained angle, guarantee that the turn-up child embryo is inseparable, and extension capsule life, through the cord diameter that changes the cord layer, effectively solved the thickness increase and lead to the unable problem of normally expanding of.

Description

Tire molding capsule

Technical Field

The utility model belongs to the technical field of tire embryo production, specifically speaking relates to a tire shaping capsule.

Background

The capsule is one of materials necessary for tire blank forming, the forming medium provides the turn-up energy required by the tire blank forming through the capsule, the capsule is continuously impacted by the turn-up medium of the forming machine and is pulled up during forming, and the service life of the capsule is a key point of attention of forming engineering technicians. Meanwhile, the service life of the bladder is not only closely related to the quality of the finished tire product and the production cost, but also has a large relation with the production efficiency. The time consumed from the start of the capsule change to the production after the change is at least about 30 minutes. In addition, the internal structure of the existing capsule is a vertical single-layer rubberizing cord (as shown in figure 1), the repeated inflation of the capsule causes the two-line cracking of the cord and the air leakage of the capsule, the cost is increased seriously, the capsule cost accounts for 91% of the forming auxiliary material cost, and the cost consumption is the largest.

SUMMERY OF THE UTILITY MODEL

The inventor dissects the air leakage position of the existing capsule and combines a capsule design drawing and cord arrangement analysis: the positions of air leakage are all broken along the straight line, so the inventor judges that the single-row cord structure is related to the air leakage of the capsule. In order to solve the above problems, a tire building bladder has been proposed.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a tire molding capsule, includes the utricule, utricule outside-in is equipped with antiseized layer, resistance to pressure layer and cord layer in proper order, the cord layer is established to double-deck twill cord line structure, and it includes top layer cord layer and bottom cord layer, and the cord that is located the top layer cord layer intercrosses with the cord that is located the bottom cord layer.

Further, the thickness of the anti-sticking layer is 0.5 mm.

Further, the thickness of the pressure-resistant layer is 5 mm.

Further, the cord diameter of the cord layer was 0.7 mm.

Further, the cords in the top cord layer and the cords in the bottom cord layer are crossed with each other to form an included angle, and the included angle is 25-35 degrees.

Further, the included angle is 30 °.

Further, antiseized layer adopts antiseized high elastic fabric layer, the pressure resistance adopts rubber pressure resistance, the cord layer adopts the nylon cord layer.

Further, the pressure-resistant layer and the cord layer are integrated into an integrated structure through vulcanization and heating.

The utility model has the advantages that:

1. the cord layer is designed into a double-layer oblique weaving cord structure, so that the pressure resistance and the wear resistance of the capsule are improved, the cord cracking caused by inflation expansion of the capsule is effectively avoided, and the requirements of the field production process are met.

2. Through the contained angle that the cord thread on preferred top layer cord layer and the cord thread on bottom layer cord layer formed, guarantee that the turn-up child embryo is inseparable, extension capsule life-span, through the cord thread diameter on change cord layer, effectively solved the thickness increase and lead to the unable normal inflation of capsule under standard pressure problem.

Drawings

FIG. 1 is a schematic view of a prior art cord arrangement;

fig. 2 is a schematic longitudinal section of the present invention;

fig. 3 is a schematic structural view of a cord layer.

In the drawings: 1-anti-sticking layer, 2-pressure resistant layer, 3-cord layer, 4-cord layer of top cord layer and 5-cord layer of bottom cord layer.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.

The present invention will be further described with reference to the accompanying drawings and preferred embodiments.

The first embodiment is as follows:

as shown in fig. 2 and 3, a tire molding capsule, includes the utricule, utricule outside-in is equipped with antiseized layer 1, resistance to pressure layer 2 and cord layer 3 in proper order, and is preferred, antiseized layer 1 adopts antiseized high elastic fabric layer, resistance to pressure layer 2 adopts the rubber resistance to pressure layer, cord layer 3 adopts the nylon cord layer. Meanwhile, the pressure-resistant layer 2 and the cord layer 3 are integrated into an integrated structure through vulcanization and heating, and the pressure resistance of the bag body is improved. In this embodiment, the thickness of the anti-sticking layer 1 is 0.5mm, the thickness of the pressure-resistant layer 2 is 5mm, and the cord diameter of the cord layer 3 is 0.7 mm.

The cord layer 3 is of a double-layer oblique weaving cord structure and comprises a top cord layer and a bottom cord layer, the cord 4 positioned on the top cord layer and the cord 5 positioned on the bottom cord layer are crossed with each other to form an included angle, the included angle is 25-35 degrees, and the included angle is 30 degrees preferably.

Meanwhile, in order to verify the influence of the included angle on the change of the expansion height, the following experiment was performed:

15 capsule body samples are designed, included angles in the samples are respectively 0-70 degrees according to the angle arrangement, 15 groups of capsules are respectively inflated, the inflation pressure is set to a standard value (high pressure: 0.3 MPA; low pressure: 0.25MPA), the inflation expansion height is measured and recorded, and the obtained data are shown in table 1.

Table 1:

the tire building process "semisteel control plan" has already been stipulated: the standard of the inflation pressure of the capsule on the large-diameter machine table is as follows: high pressure: 0.3 MPA; low pressure: 0.25MPA, and the standard value of the height of the turn-up is 18-22 mm. The included angle was 25-35 deg. as a result of the height change in table 1. Meanwhile, when the included angle is 30 degrees, the height of the turn-up is 20mm, which meets the turn-up height standard of 18-22 mm, and the turn-up quality of the capsule can be ensured.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.

Claims

1. The utility model provides a tire molding capsule, includes the utricule, its characterized in that, utricule outside-in is equipped with antiseized layer, resistance to pressure layer and cord layer in proper order, the cord layer is established to double-deck twill cord line structure, and it includes top layer cord layer and bottom cord layer, and the cord that is located the top layer cord layer intercrosses with the cord that is located the bottom cord layer.

2. The tire building bladder of claim 1 wherein the release layer is 0.5mm thick.

3. The tire building bladder of claim 1 wherein said pressure resistant layer is 5mm thick.

4. The tire building bladder of claim 1 wherein said cord layer has a cord diameter of 0.7 mm.

5. The tire building bladder of claim 1 wherein the cords in the top ply layer cross the cords in the bottom ply layer at an included angle of 25 ° to 35 °.

6. The tire building bladder of claim 5 wherein said included angle is 30 °.

7. The tire building bladder of any one of claims 1-6, wherein the anti-sticking layer is an anti-sticking high elastic fabric layer, the pressure resistant layer is a rubber pressure resistant layer, and the cord layer is a nylon cord layer.

8. The tire building bladder of claim 7 wherein the pressure resistant layer and cord layer are integrated into a unitary structure via vulcanization and heating.