Pressing ring disc for vulcanization and water tire vulcanization mold

Abstract

The utility model provides a pressing ring disc for vulcanization and a water tire vulcanization mold, and relates to the technical field of tire vulcanization tooling equipment, the pressing ring disc comprises a pressing ring disc body, and the end part of the pressing ring disc body is provided with a flange; a first conical section and a second conical section which are connected are arranged on the outer surface of the pressing ring disc body; the first conical section and the second conical section incline inwards, and the inclination angle of the second conical section is larger than that of the first conical section; the axial size of the first conical section is larger than the design size of the tire bead width of the manufactured tire; as the axial size of the first conical section in the ring pressing disc is larger than the width of the tire bead of the manufactured tire, when the width of the tire bead of a semi-finished tire is larger than the width of the tire bead of the manufactured tire, the first conical section can still be completely attached to the tire bead part of the semi-finished tire, and the compaction degree is better; the uniform distribution of the rubber material at the tire bead part in the vulcanization process is facilitated, so that the tire bead hard edge is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tire vulcanizing equipment technology, and in particular to a vulcanizing pressure plate and a water tire vulcanizing mold. Background Technology

[0002] Currently, there are two main methods for vulcanizing aircraft tires: bladder vulcanization and water-based vulcanization. Water-based vulcanization refers to using a water-based tire as a heat transfer medium during tire manufacturing, and then applying pressure through a mold to perform vulcanization. The water-based tire is a rubber bladder whose contour design should closely resemble the inner contour of the vulcanized tire to ensure minimal elongation and a long service life during vulcanization. Water-based vulcanization also ensures that the tire's interior and exterior are heated simultaneously, achieving uniform vulcanization and improving the tire's overall performance.

[0003] Various problems can occur during the vulcanization process of water-cooled tires, such as hardened bead edges. This article aims to provide a solution to the problem of hardened bead edges. Utility Model Content

[0004] The purpose of this invention is to provide a pressure plate for vulcanization and a vulcanization mold for water-cooled tires, so as to solve the problems existing in the prior art, improve the compaction of the bead area of ​​the semi-finished tire, facilitate the uniform distribution of rubber material in the bead area during the vulcanization process, and thus avoid the formation of hard edges on the bead.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A vulcanizing pressure ring disc includes a pressure ring disc body, which is cylindrical, and has a flange at one end. The outer surface of the pressure ring disc body has a first conical segment and a second conical segment that are coaxial and connected. One end of the first conical segment is connected to the surface of the flange, and the other end is connected to one end of the second conical segment. The other end of the second conical segment extends to an end of the pressure ring disc body away from the flange. From the flange-located end to the other end of the pressure ring disc body, both the first and second conical segments are inclined inward, and the inclination angle of the second conical segment is greater than that of the first conical segment. The axial dimension of the first conical segment is greater than the design dimension of the bead width of the tire being manufactured.

[0007] As one embodiment, the axial length of the first cone segment is 3mm to 10mm larger than the design size of the tire bead width.

[0008] As one embodiment, the axial length of the first cone segment is 5 mm larger than the design size of the tire bead width.

[0009] As one embodiment, the large-diameter end of the first cone segment is 1mm to 5mm larger than the bead engagement diameter of the manufactured tire.

[0010] As one embodiment, the large-diameter end of the first cone segment is 2 mm larger than the bead engagement diameter of the manufactured tire.

[0011] As one implementation, the angle of the first cone segment is 6°~7°.

[0012] In one embodiment, the angle of the second cone segment is 15° to 30°.

[0013] As one embodiment, the diameter of the flange is 198mm, the inner diameter of the pressure ring disc is 110mm, the large diameter end diameter of the first tapered section is 160mm, and the axial length of the first tapered section is 24mm.

[0014] In one embodiment, the height of the pressure ring disc is 45mm, the thickness of the flange is 10mm, and the first tapered segment is connected to the flange surface by a circular arc with a radius of 5mm.

[0015] This utility model also discloses a water tire vulcanizing mold, which includes the pressure ring plate as described above.

[0016] This utility model has the following technical advantages over the prior art:

[0017] This invention sets the axial dimension of the first cone segment in the pressure plate to be greater than the bead width of the tire being manufactured. When the bead width of the semi-finished tire is greater than the bead width of the tire being manufactured, the first cone segment can still fully fit with the bead portion of the semi-finished tire, resulting in better compaction. This is beneficial for the uniform distribution of rubber material in the bead area during vulcanization, thereby avoiding the formation of hard edges on the bead.

[0018] Other technical solutions in this utility model have the following technical effects compared to the prior art:

[0019] In this invention, the large-diameter end of the first cone section of the pressure plate is larger than the bead engagement diameter of the tire being manufactured, making it easier to load the semi-finished tire into the pressure pan. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the pressure ring disc for vulcanization in one embodiment of the present invention;

[0022] Figure 2This is a schematic diagram showing the usage state of the vulcanizing pressure ring disc in one embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Pressure plate body; 2. Flange; 3. First cone section; 4. Second cone section; 5. Bead area of ​​semi-finished tire; 6. Tire teeth of water tire. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a pressure plate for vulcanization to solve the problems existing in the prior art. It provides better compaction of the bead area of ​​the semi-finished tire, which is conducive to the uniform distribution of rubber material in the bead area during vulcanization, thereby avoiding the formation of hard edges on the bead.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1:

[0029] like Figure 1 , Figure 2 As shown, this embodiment provides a vulcanizing pressure ring disc, including a pressure ring disc body 1, which is cylindrical, and a flange 2 is provided at the end of the pressure ring disc body 1; the outer surface of the pressure ring disc body 1 has a first conical segment 3 and a second conical segment 4 connected to each other, one end of the first conical segment 3 is connected to the surface of the flange 2, and the other end is connected to one end of the second conical segment 4, and the other end of the second conical segment 4 extends to the end of the pressure ring disc body 1 away from the flange 2; along the pressure ring disc body 1 from the end where the flange 2 is located to the other end of the pressure ring disc body 1, both the first conical segment 3 and the second conical segment 4 are inclined inward (i.e. towards the axial direction), and the inclination angle of the second conical segment 4 is greater than that of the first conical segment 3; the axial dimension of the first conical segment 3 is greater than the design dimension of the bead width of the tire being manufactured.

[0030] During use, the pressure plate is fixed on the shaping pressure plate in the water tire vulcanization mold, and the semi-finished tire (i.e., the tire to be vulcanized) is fitted onto the outside of the water tire in the water tire vulcanization mold. During the vulcanization process of the semi-finished tire being placed in the water tire vulcanization mold, the second cone segment 4 in the pressure plate body 1 engages with the water tire tooth 6, pressing the bead portion of the semi-finished tire tightly between the flange 2 and the water tire tooth 6. The slope of the first cone segment 3 is the slope of the bead mating surface (generally 1.5° to 3° larger than the rim slope), and its main function is to engage with the bead portion 5 of the semi-finished tire during pressure ring pressing, ensuring a uniform distribution of rubber material in the bead portion of the semi-finished tire. However, in actual vulcanization, it has been found that the bead width of the semi-finished tire is usually slightly larger or smaller than the bead width of the finished tire (i.e., the tire product to be manufactured). If the axial dimension of the first cone segment 3 is the same as the bead size of the tire being manufactured, during the water tire vulcanization process, when the bead width of the semi-finished tire is slightly larger than the bead width of the tire being manufactured, it often results in insufficient compaction of the semi-finished tire bead. This prevents the rubber compound in the bead area of ​​the semi-finished tire from being fully compressed and evenly distributed, ultimately leading to the appearance of a hard bead edge. In this embodiment, by making the axial dimension of the first cone segment 3 larger than the bead width of the tire being manufactured, when the bead width of the semi-finished tire is larger than the bead width of the tire being manufactured, the first cone segment 3 can still fully fit with the bead portion of the semi-finished tire, resulting in better compaction. This is beneficial for the even distribution of rubber compound in the bead area during vulcanization, thereby avoiding the appearance of a hard bead edge.

[0031] In this embodiment, the axial length of the first cone segment 3 is 3mm to 10mm larger than the designed bead width of the tire. Different values ​​can be used depending on the specifications of the tire being manufactured. For example, when manufacturing an aircraft tire with a model number of 320×120-160, the axial length of the first cone segment 3 is 5mm larger than the designed bead width of the tire. The bead width of the 320×120-160 aircraft tire is 19mm. In this embodiment, the axial dimension of the first cone segment 3 is 24mm.

[0032] During the vulcanization process of water-cooled tires, after the semi-finished tires are shaped and pressed by the pressing plate, considering the process error and uneven distribution of rubber material during the molding of the semi-finished tires, if the large diameter end diameter of the first cone section 3 is the same as the bead engagement diameter of the tire being manufactured, it will be difficult to load the semi-finished tires into the pot (into the water-cooled tire vulcanization mold). In order to solve the problem of the tires smoothly sliding into the pot, in this embodiment, the large diameter end diameter of the first cone section 3 is 1mm to 5mm larger than the bead engagement diameter of the tire being manufactured.

[0033] It should be noted that if the large diameter of the first conical section is larger than the bead engagement diameter of the tire being manufactured, the bead engagement diameter of the tire being manufactured may be too large. However, the bead engagement diameter of the tire being manufactured can still meet the accuracy requirements by controlling the difference between the large diameter of the first conical section 3 and the bead engagement diameter of the tire being manufactured.

[0034] As one embodiment, the large-diameter end diameter of the first cone segment 3 is 2 mm larger than the bead engagement diameter of the manufactured tire.

[0035] As one implementation, the angle of the first cone segment 3 is 6°~7°, and can be 6.5°.

[0036] As one implementation, the angle of the second cone segment 4 is 15°~30°, and can be 15°.

[0037] Taking a 320×120-160 aircraft tire as an example, the flange 2 of the pressure plate required has a diameter of 198mm, and the inner diameter of the pressure plate body 1 is 110mm (the diameter of flange 2 and the inner diameter of pressure plate body 1 are consistent with traditional pressure plates, facilitating fixation on the shaping plate). The angle of the first cone segment 3 is 6.5°, and the angle of the second cone segment 4 is 15°. The large diameter end of the first cone segment 3 is 160mm, and the axial length of the first cone segment 3 is 24mm. The height of the pressure plate body 1 is 45mm, and the thickness of flange 2 is 10mm. The surface of the first cone segment 3 and flange 2 is connected by a 5mm radius arc transition. The edges of flange 2 are also transitioned by rounded corners.

[0038] Example 2:

[0039] This embodiment discloses a water tire vulcanizing mold, which includes the pressure ring plate as described above.

[0040] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0041] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pressure ring disc for vulcanization, characterized in that, The device includes a pressure ring disc, which is cylindrical and has a flange at one end. The outer surface of the pressure ring disc has a coaxial, connected first and second conical segment. One end of the first conical segment is connected to the surface of the flange, and the other end is connected to one end of the second conical segment. The other end of the second conical segment extends into the pressure ring disc away from the flange. Along the pressure ring disc from the flange-located end to the other end, both the first and second conical segments are inclined inwards, with the inclination angle of the second conical segment being greater than that of the first conical segment. The axial dimension of the first conical segment is greater than the design size of the tire bead width.

2. The pressure ring disc for vulcanization according to claim 1, characterized in that, The axial length of the first cone segment is 3mm to 10mm larger than the design width of the tire bead.

3. The pressure ring disc for vulcanization according to claim 1, characterized in that, The axial length of the first cone segment is 5mm larger than the design width of the tire bead.

4. The vulcanizing pressure ring disc according to claim 2 or 3, characterized in that, The diameter of the large-diameter end of the first cone segment is 1mm to 5mm larger than the bead engagement diameter of the tire being manufactured.

5. The pressure ring disc for vulcanization according to claim 4, characterized in that, The diameter of the large-diameter end of the first cone segment is 2mm larger than the bead engagement diameter of the tire being manufactured.

6. The pressure ring disc for vulcanization according to claim 4, characterized in that, The angle of the first cone segment is 6° to 7°.

7. The pressure ring disc for vulcanization according to claim 6, characterized in that, The angle of the second cone segment is 15° to 30°.

8. The pressure ring disc for vulcanization according to claim 7, characterized in that, The flange has a diameter of 198 mm, the inner diameter of the pressure ring disc is 110 mm, the large diameter end diameter of the first tapered section is 160 mm, and the axial length of the first tapered section is 24 mm.

9. The pressure ring disc for vulcanization according to claim 8, characterized in that, The height of the pressure ring disc is 45mm, the thickness of the flange is 10mm, and the first tapered section is connected to the flange surface by a circular arc with a radius of 5mm.

10. A water-based tire vulcanizing mold, characterized in that, The water tire vulcanizing mold includes a pressure ring disc as described in any one of claims 1 to 9.

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