Vacuumizing type tire production mold

Abstract

The invention belongs to the technical field of tire forming molds, and particularly relates to a vacuumizing type tire production mold which comprises a shaping assembly, the shaping assembly comprises a base, a plurality of tire forming modules are arranged at the top of the base, connecting plates are installed at the tops of the tire forming modules, and the tire forming modules and the connecting plates are fixed through pressing and locking sealing blocks. A plurality of tire forming modules are uniformly arranged on the outer side of the bottom of the connecting plate; a tire forming cavity is formed among the base, the tire forming modules and the connecting plate; and the plurality of tire forming modules form a ring. By arranging a plurality of vacuum adsorption areas which can be independently controlled and accurately controlling the vacuum degree of each vacuum adsorption area, the fitting degree of each part of the tire and the mold is adjusted, so that the tire can be uniformly formed in the mold, the time required for adjusting the air pressure is shortened, and the yield and the production efficiency are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tire manufacturing, and in particular relates to a vacuum tire production mold. Background Art

[0002] Tire production molds are key equipment used for vulcanization molding of various types of tires. They are widely used in the production of tires for automobiles, construction machinery, bicycles, motorcycles, and airplanes. The main functions of tire molds include two processes: vulcanization and molding. The vulcanization process changes the rubber from raw rubber to cooked rubber, thereby enhancing the elasticity, strength, and antioxidant properties of the tire. Molding forms personalized patterns, designs, fonts, and other appearance features of the tire based on the shape of the model. These complex and precise processes reflect the importance of tire molds in modern tire production. However, existing tire production molds mostly achieve the fitting of the tire and the mold by inflating the tire. However, this method of inflating the tire with air pressure to fit the mold is prone to uneven pressure distribution during the fitting process, resulting in uneven indentations or deformation on the tire surface, affecting the yield rate and causing waste of materials. In addition, the inflation fitting requires more than a dozen pieces to ensure uniform air pressure everywhere inside the tire, and it takes a long time to adjust the air pressure, which is not conducive to large-scale production. Summary of the invention

[0003] The purpose of the present invention is to provide a vacuum tire production mold, which is provided with a plurality of independently controllable vacuum adsorption areas. By accurately controlling the vacuum degree of each vacuum adsorption area, the fit between each part of the tire and the mold is adjusted, thereby ensuring that the tire can be uniformly formed in the mold, and reducing the time required for adjusting the air pressure, thereby greatly improving the yield and production efficiency.

[0004] The technical solution adopted by the present invention is as follows: A vacuum tire production mold, comprising a shaping component, the shaping component comprising a base, a plurality of tire shaping modules are arranged on the top of the base, a connecting plate is installed on the top of the tire shaping module, the tire shaping module and the connecting plate are fixed by a compression locking sealing block, the plurality of tire shaping modules are evenly arranged on the outer side of the bottom of the connecting plate, and a tire shaping cavity is formed between the base, the tire shaping module and the connecting plate; A plurality of tire forming modules form a ring, a steel ring is installed on the outside of the tire forming module and above the base, a vacuum chamber is formed between each tire forming module and the steel ring, a vacuum exhaust pipe is provided on the outside of the steel ring, the vacuum exhaust pipe is connected to the vacuum chamber, a second temperature measuring hole is provided in the middle of the tire forming module, one end of the second temperature measuring hole is connected to the vacuum chamber, and the other end of the second temperature measuring hole is connected to the tire forming chamber, and each vacuum chamber is externally connected to an independently controlled vacuum device through the vacuum exhaust pipe; A temperature detection component is arranged in the base, the tire molding module and the connecting plate.

[0005] In a preferred embodiment, the temperature detection element is a thermal resistance temperature sensor or a thermocouple temperature detector.

[0006] In a preferred embodiment, a first vacuum forming cavity is opened on the outside of the tire forming module, a plurality of the second temperature measuring holes are arranged at the first vacuum forming cavity, a second vacuum forming cavity is opened on the inside of the steel ring at a position corresponding to the first vacuum forming cavity, the vacuum cavity is constituted by the first vacuum forming cavity and the second vacuum forming cavity, and the steel ring located on both sides of the first vacuum forming cavity and the second vacuum forming cavity is fitted with the tire forming module to form a seal.

[0007] In a preferred embodiment, a positioning groove is provided on the outer periphery of the top, and the positioning groove is aligned with the middle part of the tire forming module. A compression locking sealing block is fixed on the top of the positioning groove, and the compression locking sealing block is used to fix the tire forming module and the connecting plate, and the bottom of the compression locking sealing block is in contact with the top of the tire forming module, and the compression locking sealing block seals the top of the first vacuum forming cavity. When the steel ring is installed on the outside of the tire forming module, the top of the second vacuum forming cavity contacts one side of the compression locking sealing block, and the top of the vacuum cavity formed between the second vacuum forming cavity and the first vacuum forming cavity is sealed by the compression locking sealing block.

[0008] In a preferred embodiment, when the steel ring is installed on the outside of the tire forming module, the bottom of the steel ring and the tire forming module are in contact with the bottom of the base, and the bottom of the vacuum cavity formed by the second vacuum forming cavity and the first vacuum forming cavity is sealed by the base.

[0009] In a preferred embodiment, a plurality of first temperature measuring holes are evenly opened at the bottom of the base, a plurality of third temperature measuring holes are evenly opened at the top of the connecting plate, and the temperature detecting element is arranged inside the first temperature measuring hole, the second temperature measuring hole and the third temperature measuring hole.

[0010] In a preferred embodiment, a top plate is fixed on the top of the steel ring, and the steel ring and the top plate are fixed by screws. A second steam delivery opening is provided in the middle of the top plate, a first steam delivery opening is provided in the middle of the connecting plate, the second steam delivery opening is aligned with the first steam delivery opening, a steam discharge opening is provided in the middle of the bottom of the base, the second steam delivery opening is connected to an external steam pipe, and the steam discharge opening is connected to an external exhaust pipe.

[0011] In a preferred embodiment, steam heating holes are provided on both sides of each tire forming module, an annular constant temperature heating chamber is arranged inside the steel ring, and a plurality of steam exhaust ports are provided on the inner side of the steel ring, and the steam exhaust ports are connected with the constant temperature heating chamber. When the steel ring is installed on the outside of the tire forming module, the steam exhaust port corresponding to the second temperature measuring hole connects the tire forming cavity with the constant temperature heating chamber.

[0012] In a preferred embodiment, a tire pattern forming surface is provided on a side surface of the tire building module close to the tire building cavity.

[0013] The technical effects achieved by the present invention are: The present invention provides a plurality of vacuum chambers between the tire molding module and the steel rim and independently controlled vacuum equipment connected to each vacuum chamber. During the vulcanization process of the tire, each vacuum equipment is independently controlled so that the tire can be adsorbed on the surface of the tire molding module. During the vulcanization process, the vacuum degree of each vacuum chamber is controlled to adjust the fit between the tire and the tire molding module, thereby ensuring that the tire can be uniformly molded in the mold. The present invention can guide the high-temperature steam used to heat the tire into the interior of the constant-temperature heating chamber arranged in the steel ring, and heat the tire molding module through heat conduction, thereby ensuring that the inside and outside of the tire molding module are heated evenly. At the same time, the temperature detection parts arranged on the base, the tire molding module and the connecting plate can measure the real-time temperature of the tire periphery, making it more convenient to control the temperature of the high-temperature steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure explosion of the present invention; Figure 3 It is a schematic diagram of the connection structure between the tire building module and the connecting plate of the present invention; Figure 4 is a cross-sectional schematic diagram of one side of the present invention; Figure 5 It is a cross-sectional schematic diagram of the explosion structure of the present invention; Figure 6 It is a cross-sectional schematic diagram of the present invention as a whole.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Base; 2. Tire forming module; 3. Connecting plate; 4. Steel ring; 5. Top plate; 6. Compression-locking sealing block; 11. First temperature measuring hole; 12. Steam discharge opening; 21. First vacuum forming chamber; 22. Second temperature measuring hole; 23. Steam heating hole; 31. Third temperature measuring hole; 32. First steam delivery opening; 41. Second vacuum forming chamber; 42. Vacuum exhaust pipe; 43. Steam discharge port; 44. Constant temperature heating chamber; 51. Second steam delivery opening. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0019] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0020] Please see attached Figures 1 to 6 As shown, a vacuum tire production mold includes a shaping component, the shaping component includes a base 1, a plurality of tire shaping modules 2 are arranged on the top of the base 1, a connecting plate 3 is installed on the top of the tire shaping module 2, the tire shaping module 2 and the connecting plate 3 are fixed by a compression locking sealing block 6, a plurality of tire shaping modules 2 are evenly arranged on the outside of the bottom of the connecting plate 3, and a tire shaping cavity is formed between the base 1, the tire shaping module 2 and the connecting plate 3; Several tire forming modules 2 form a ring, and a steel ring 4 is installed on the outside of the tire forming module 2 and above the base 1. A vacuum chamber is formed between them, a vacuum exhaust pipe 42 is provided on the outer side of the steel ring 4, the vacuum exhaust pipe 42 is connected to the vacuum chamber, a second temperature measuring hole 22 is provided in the middle of the tire building module 2, one end of the second temperature measuring hole 22 is connected to the vacuum chamber, and the other end of the second temperature measuring hole 22 is connected to the tire building chamber, and each vacuum chamber is connected to an independently controlled vacuum device externally through the vacuum exhaust pipe 42; A top plate 5 is fixed to the top of the steel ring 4, and the steel ring 4 and the top plate 5 are fixed by screws. A second steam delivery opening 51 is provided in the middle of the top plate 5, a first steam delivery opening 32 is provided in the middle of the connecting plate 3, and the second steam delivery opening 51 is aligned with the first steam delivery opening 32. A steam discharge opening 12 is provided in the middle of the bottom of the base 1, and the second steam delivery opening 51 is connected to an external steam pipe, and the steam discharge opening 12 is connected to an external exhaust pipe; The temperature detecting component is arranged in the base 1 , the tire forming module 2 and the connecting plate 3 .

[0021] In the above, the bottom of the base 1 is connected to the lower part of the tire production equipment, the tire forming module 2, the connecting plate 3, the steel ring 4, the top plate 5 and the pressure locking sealing block 6 are assembled together, and the top of the top plate 5 is connected to the upper part of the tire production equipment. When the tire is vulcanized, the unprocessed tire embryo is placed on the top of the base 1, and then the top plate 5 is moved downward, and the appropriate tire forming module 2, the connecting plate 3, the steel ring 4 and the top plate 5 are pressed on the top of the base 1, and the bottom of the tire forming module 2 and the connecting plate 3 are attached to the base 1. At this time, the tire embryo is located between the base 1, the tire forming module 2 and the connecting plate 3 to form a tire forming cavity, and the external connection with the vacuum cavity is started. The vacuum equipment extracts the air inside the vacuum chamber, and causes the tire embryo inside the tire molding chamber to be sucked and fit with the inner wall of the tire molding module 2. Then the tire production equipment is started, and high-temperature steam is introduced into the tire molding chamber through the steam pipe to increase the temperature inside the tire molding chamber, and the high-temperature steam is discharged from the exhaust pipe after passing through the tire molding chamber. During the process, the heated tire molding chamber can vulcanize and mold the tire embryo. During the process, the real-time temperature of various parts of the tire embryo can be measured according to the set temperature detection parts, and the suction generated by each vacuum chamber can be controlled according to the temperature, so as to adjust the fitting strength of the tire embryo and the tire molding module 2, and ensure that the tire is subjected to consistent pressure and can be evenly molded.

[0022] Furthermore, the temperature detection element is a thermal resistance temperature sensor or a thermocouple temperature detector.

[0023] Next, please refer to Figure 2A first vacuum forming cavity 21 is provided on the outer side of the tire forming module 2, a plurality of second temperature measuring holes 22 are provided at the first vacuum forming cavity 21, a second vacuum forming cavity 41 is provided on the inner side of the steel ring 4 at a position corresponding to the first vacuum forming cavity 21, the vacuum cavity is formed between the first vacuum forming cavity 21 and the second vacuum forming cavity 41, and the steel ring 4 located on both sides of the first vacuum forming cavity 21 and the second vacuum forming cavity 41 is fitted with the tire forming module 2 to form a seal; A positioning groove is arranged on the outer periphery of the top, and the positioning groove is aligned with the middle part of the tire forming module 2. A compression-locking sealing block 6 is fixed on the top of the positioning groove, and the compression-locking sealing block 6 is used to fix the tire forming module 2 and the connecting plate 3, and the bottom of the compression-locking sealing block 6 is in contact with the top of the tire forming module 2, and the compression-locking sealing block 6 seals the top of the first vacuum forming cavity 21. When the steel ring 4 is installed on the outer side of the tire forming module 2, the top of the second vacuum forming cavity 41 contacts one side of the compression-locking sealing block 6, and the top of the vacuum cavity formed between the second vacuum forming cavity 41 and the first vacuum forming cavity 21 is sealed by the compression-locking sealing block 6; When the steel ring 4 is installed on the outside of the tire forming module 2 , the bottom of the steel ring 4 and the tire forming module 2 are in contact with the bottom of the base 1 , and the bottom of the vacuum cavity formed by the second vacuum forming cavity 41 and the first vacuum forming cavity 21 is sealed by the base 1 .

[0024] In the above, the first vacuum forming chamber 21 and the second vacuum forming chamber 41 constitute a vacuum chamber as a whole, and because the inner wall of the steel ring 4 fits with the outer wall of the tire forming module 2, the two sides of the vacuum chamber are sealed, and at the same time, the connecting plate 3 is connected to the upper part of the vacuum chamber through the compression locking sealing block 6, and the compression locking sealing block 6 is located in the notch above the vacuum chamber, which can seal the upper part of the vacuum chamber, and at the same time, the tire forming module 2 and the bottom of the steel ring 4 are completely fitted with the base 1, completing the sealing of the bottom of the vacuum chamber, so that the vacuum chamber can maintain a negative pressure state when vacuuming, thereby completing the adsorption of the tire embryo. In specific use, when the base 1, the tire forming module 2, and the steel ring 4 process the tire embryo, the air in the corresponding vacuum chamber is extracted through an external independently controlled vacuum device, so that the vacuum chamber can generate negative pressure to adsorb the tire embryo contacting the second temperature measuring hole 22 on one side of the tire forming module 2, and the adsorption strength of the tire embryo can be changed by adjusting the vacuum degree of the vacuum chamber, ensuring that the tire embryo is uniformly pressurized during vulcanization.

[0025] Secondly, please refer to Figure 2 A plurality of first temperature measuring holes 11 are evenly formed at the bottom of the base 1 , a plurality of third temperature measuring holes 31 are evenly formed at the top of the connecting plate 3 , and the temperature detecting element is arranged inside the first temperature measuring hole 11 , the second temperature measuring hole 22 and the third temperature measuring hole 31 .

[0026] In this embodiment, the temperature detection components arranged in the third temperature measuring hole 31 and the first temperature measuring hole 11 can detect the real-time temperature on both sides of the tire during the vulcanization process, while the temperature detection component arranged in the second temperature measuring hole 22 can detect the real-time temperature of the tire periphery, thereby making it more convenient to control the temperature.

[0027] Secondly, please also refer to Figure 2 and Figure 5 Steam heating holes 23 are provided on both sides of each tire building module 2, an annular constant temperature heating chamber 44 is arranged inside the steel ring 4, and a plurality of steam exhaust ports 43 are provided on the inner side of the steel ring 4, and the steam exhaust ports 43 are connected with the constant temperature heating chamber 44. When the steel ring 4 is installed on the outer side of the tire building module 2, the steam exhaust ports 43 corresponding to the steam heating holes 23 connect the tire building cavity with the constant temperature heating chamber 44.

[0028] In the above, by cooperating with the steam heating hole 23 and the steam exhaust port 43, the high-temperature steam used for vulcanizing the tire during the tire production process can enter the constant temperature heating chamber 44, and the high-temperature steam heats the tire molding module 2, so that the temperature of the tire molding module 2 rises, and the outer tread of the tire can be heated, so that the tire is shaped and vulcanized.

[0029] Secondly, a tire pattern forming surface is provided on one side surface of the tire building module 2 close to the tire building cavity.

[0030] In the above, the tire pattern forming surface arranged on the surface of the tire forming module 2 is used to form patterns of different shapes on the surface of the tire during the tire production process, so as to increase the friction between the tire and the ground and ensure the safety of the vehicle during driving.

[0031] The working principle of the present invention is as follows: when vulcanizing the tire, the unprocessed tire embryo is placed on the top of the base 1, and then the top plate 5 is moved downward, and the appropriate tire molding module 2, the connecting plate 3, the steel ring 4 and the top plate 5 are pressed together on the top of the base 1, and the bottom of the tire molding module 2 and the connecting plate 3 are in contact with the base 1. At this time, the tire embryo is located between the base 1, the tire molding module 2 and the connecting plate 3 to form a tire molding cavity, and the vacuum equipment connected to the vacuum cavity is started to extract the air inside the vacuum cavity. The tire is sucked and attached to the inner wall of the tire molding module 2, and then the tire production equipment is started, and high-temperature steam is introduced into the tire molding cavity through the steam pipe. The temperature in the tire molding cavity rises, and at the same time, high-temperature steam enters the constant temperature heating chamber 44, and releases the tire molding module 2 through the steam exhaust port 43 and the steam heating hole 23, so that the temperature of the tire molding module 2 rises, and the high-temperature steam is discharged from the exhaust pipe after passing through the tire molding cavity. During the process, the high-temperature steam and the heated tire molding module 2 can vulcanize and mold the tire embryo. During the process, the real-time temperature of each part of the tire embryo can be measured according to the set temperature detection component, and the suction generated by each vacuum chamber can be controlled according to the temperature, and the fitting strength between the tire embryo and the tire molding module 2 is adjusted to ensure that the tire is subjected to consistent pressure and uniform molding, thereby greatly improving the yield rate and production efficiency.

[0032] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A vacuum tire production mold, characterized in that: The shaping component comprises a base (1), a plurality of tire shaping modules (2) are arranged on the top of the base (1), a connecting plate (3) is installed on the top of the tire shaping module (2), the tire shaping module (2) and the connecting plate (3) are fixed by a compression-locking sealing block (6), the plurality of tire shaping modules (2) are evenly arranged on the outside of the bottom of the connecting plate (3), and a tire shaping cavity is formed between the base (1), the tire shaping module (2) and the connecting plate (3); A plurality of the tire forming modules (2) form a ring shape, and a steel ring (4) is installed on the outside of the tire forming module (2) and above the base (1). Each of the tire forming modules (2) and the steel ring (4) A vacuum chamber is formed between the steel ring (4), a vacuum exhaust pipe (42) is provided on the outside of the steel ring (4), the vacuum exhaust pipe (42) is connected to the vacuum chamber, a second temperature measuring hole (22) is provided in the middle of the tire forming module (2), one end of the second temperature measuring hole (22) is connected to the vacuum chamber, and the other end of the second temperature measuring hole (22) is connected to the tire forming chamber, and each vacuum chamber is externally connected to an independently controlled vacuum device via the vacuum exhaust pipe (42); A temperature detection component is arranged in the base (1), the tire forming module (2) and the connecting plate (3).

2. The vacuum tire production mold according to claim 1, characterized in that: The temperature detection element is a thermal resistance temperature sensor or a thermocouple temperature detector.

3. The vacuum tire production mold according to claim 1, characterized in that: A first vacuum forming cavity (21) is provided on the outside of the tire forming module (2), a plurality of the second temperature measuring holes (22) are arranged at the first vacuum forming cavity (21), a second vacuum forming cavity (41) is provided on the inside of the steel ring (4) and at a position corresponding to the first vacuum forming cavity (21), the vacuum cavity is formed between the first vacuum forming cavity (21) and the second vacuum forming cavity (41), and the steel ring (4) located on both sides of the first vacuum forming cavity (21) and the second vacuum forming cavity (41) fits with the tire forming module (2) to form a seal.

4. The vacuum tire production mold according to claim 3, characterized in that: A positioning groove is provided on the outer periphery of the top portion, the positioning groove is aligned with the middle portion of the tire forming module (2), a compression-locking sealing block (6) is fixed to the top portion of the positioning groove, the compression-locking sealing block (6) is used to fix the tire forming module (2) and the connecting plate (3), and the bottom portion of the compression-locking sealing block (6) is in contact with the top portion of the tire forming module (2), and the compression-locking sealing block (6) seals the top portion of the first vacuum forming cavity (21), and when the steel ring (4) is mounted on the outside of the tire forming module (2), the top portion of the second vacuum forming cavity (41) contacts one side of the compression-locking sealing block (6), and the top portion of the vacuum cavity formed between the second vacuum forming cavity (41) and the first vacuum forming cavity (21) is sealed by the compression-locking sealing block (6).

5. The vacuum tire production mold according to claim 4, characterized in that: When the steel ring (4) is installed on the outside of the tire forming module (2), the bottom of the steel ring (4) and the tire forming module (2) are both in contact with the bottom of the base (1), and the bottom of the vacuum cavity formed by the second vacuum forming cavity (41) and the first vacuum forming cavity (21) is sealed by the base (1).

6. The vacuum tire production mold according to claim 1, characterized in that: A plurality of first temperature measuring holes (11) are evenly formed at the bottom of the base (1), a plurality of third temperature measuring holes (31) are evenly formed at the top of the connecting plate (3), and the temperature detecting element is arranged inside the first temperature measuring hole (11), the second temperature measuring hole (22) and the third temperature measuring hole (31).

7. The vacuum tire production mold according to claim 1, characterized in that: A top plate (5) is fixed on the top of the steel ring (4), and the steel ring (4) and the top plate (5) are fixed by screws. A second steam delivery opening (51) is provided in the middle of the top plate (5), and a first steam delivery opening (32) is provided in the middle of the connecting plate (3), and the second steam delivery opening (51) is aligned with the first steam delivery opening (32). A steam discharge opening (12) is provided in the middle of the bottom of the base (1), and the second steam delivery opening (51) is connected to an external steam pipe, and the steam discharge opening (12) is connected to an external exhaust pipe.

8. The vacuum tire production mold according to claim 1, characterized in that: Each tire building module (2) is provided with steam heating holes (23) on both sides, an annular constant temperature heating chamber (44) is provided inside the steel ring (4), a plurality of steam exhaust ports (43) are provided inside the steel ring (4), and the steam exhaust ports (43) are connected to the constant temperature heating chamber (44). When the steel ring (4) is installed on the outside of the tire building module (2), the steam exhaust ports (43) corresponding to the second temperature measuring holes (22) are connected to the tire building chamber and the constant temperature heating chamber (44).

9. The vacuum tire production mold according to claim 1, characterized in that: A tire pattern forming surface is provided on one side surface of the tire molding module (2) close to the tire molding cavity.

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