Lightweight tire and production process

Abstract

The light-weight tire comprises a tire bead area, a tire side area, a tire body layer, a belted layer and a tire crown area which are distributed from inside to outside, the tire bead area is provided with a steel wire ring, bead filler wrapping the steel wire ring, a tire bead filling rubber strip covering the outer side of the bead filler, a wear-resistant rubber strip wrapping the exterior of a tire bead, and a tire chafer, the tire sidewall area comprises a tire sidewall and steel wire wrapping cloth at the edge of the tire sidewall, the tire body layer penetrates through the whole tire, the tire body layer comprises a tire body, and a lining layer is arranged on the inner side of the tire body layer. Through a series of structural design and process optimization measures, the self weight of the tire is reduced, and meanwhile, the driving performance and the safety of the tire are ensured not to be influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of tire production, and in particular to a lightweight tire and a production process. Background Art

[0002] At present, the domestic market's transportation is gradually developing towards standard-load vehicles, with existing models gradually withdrawing from the market and being replaced by new transport vehicles that comply with national policies and industry standards.

[0003] However, existing tire products have obvious design shortcomings, mainly manifested in the following aspects:

[0004] 1. Excessive shoulder thickness: The shoulder design of existing tires is relatively conservative and thick, which increases the weight of the tires, thus affecting the overall weight and fuel efficiency of the transport vehicle;

[0005] 2. The tire mouth is too thick: The tire mouth (the part where the tire contacts the wheel rim) is too thick, which not only increases the production cost, but also aggravates the heat accumulation during use, affecting the heat dissipation effect of the tire;

[0006] 3. Insufficient cost and heat management: Existing tire designs fail to effectively balance cost and heat management, resulting in the heat of the tire being difficult to dissipate effectively under high load and long-term operation, affecting the tire's service life and safety, and failing to meet the emerging market's demand for high efficiency, low cost and excellent heat dissipation performance; therefore, we designed a lightweight tire and production process to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a lightweight tire and production process, which reduces the tire's own weight through a series of structural design and process optimization measures while ensuring that the tire's driving performance and safety are not affected.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A lightweight tire, comprising a bead area, a sidewall area, a carcass layer, a belt layer and a crown area distributed from inside to outside;

[0010] The bead area is provided with a steel bead, an apex rubber wrapping the steel bead, a bead filling rubber strip covering the outside of the apex rubber, and a wear-resistant rubber strip and a bead chafer covering the outside of the bead;

[0011] The sidewall region includes the steel wire cloth on the sidewall and the edge of the sidewall;

[0012] The carcass layer runs through the entire tire, the carcass layer includes a carcass, and an inner liner layer is provided on the inner side of the carcass layer;

[0013] The belt layer comprises a multi-layer cross-arranged steel cord body and a zero-degree belt layer body;

[0014] The crown area includes the crown and the external tread, a cushion rubber is arranged between the end of the belt layer and the carcass layer, and a shoulder cushion rubber is arranged at the connection between the crown and the sidewall.

[0015] Preferably, the height of the apex rubber accounts for 20%-50% of the tire section height, the outer side of the apex rubber is connected to the carcass layer through the bead filling strip, the outer end point height of the wear-resistant strip is 23%-53% of the section height, and the wear-resistant strip covers the end point of the apex rubber.

[0016] Preferably, the carcass layer includes a first belt layer body, a second belt layer body and a third belt layer body, the steel cord bodies arranged on the first belt layer body, the second belt layer body and the third belt layer body are cross-arranged at 15° to 30°, and the zero-degree belt layer body is wound along the circumferential direction of the tire.

[0017] Preferably, the thickness of the bead filling strip decreases from the wire ring to the sidewall, and the maximum thickness of the bead filling strip is 10%-25% of the total bead thickness.

[0018] The present invention also discloses a production process for a lightweight tire, comprising the following steps:

[0019] S1: Material preparation: the staff injects natural rubber, carbon black and various chemical raw materials into the processing box respectively, and cuts and crushes the various raw materials through the processing box to facilitate subsequent smelting processing;

[0020] S2: Carcass forming: the shredded raw materials are melted into tire shapes through a forming machine;

[0021] S3: Post-processing, laser engraving of the tread.

[0022] Preferably, the side wall of the processing box is fixedly connected to the motor, the output end of the motor is fixedly connected to the transmission rod, the transmission rod penetrates the processing box and is rotatably connected therewith, the outer wall of the transmission rod is fixedly connected to a plurality of first cutting blades, the top of the processing box is fixedly connected to a limiting block, the limiting block is penetrated by a first rotating rod rotatably connected therewith, the outer wall of the transmission rod and the outer wall of the first rotating rod are jointly sleeved with a first synchronous belt, the first rotating rod one end close to the feed hopper is fixedly connected to an active bevel gear, the active bevel gear is meshed with a driven bevel gear, the driven bevel gear is fixedly connected to a second rotating rod, the second rotating rod penetrates the processing box and is rotatably connected therewith, the bottom of the second rotating rod is fixedly connected to a second cutting blade, the processing box is penetrated by a rotating rod rotatably connected therewith, the outer wall of the transmission rod and the outer wall of the rotating rod are jointly sleeved with a second synchronous belt, and the outer wall of the rotating rod is fixedly connected to a plurality of stirring rods.

[0023] Preferably, the top of the processing box is fixedly connected to a feed hopper, the bottom of the processing box is fixedly connected to a discharge hopper, the outer wall of the discharge hopper is installed with a first electromagnetic valve, the inner wall of the processing box is fixedly connected to a partition plate, the bottom of the partition plate is provided with a discharge hopper connected thereto, and the outer wall of the discharge hopper is installed with a second electromagnetic valve.

[0024] Preferably, the outer wall of the transmission rod and the outer wall of the first rotating rod are both fixedly connected with a first pulley, the first synchronous belt is sleeved on the outer walls of the two first pulleys, the outer wall of the transmission rod and the outer wall of the rotating rod are both fixedly connected with a second pulley, and the second synchronous belt is sleeved on the outer walls of the two second pulleys.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Lightweight: By reducing the width, tread depth and outer diameter of the tire, the weight of the tire is reduced, thereby improving the vehicle's fuel efficiency and reducing energy consumption.

[0027] 2. Improved performance on wet roads: The tread design is optimized to ensure the stability and traction of the tire on wet roads.

[0028] 3. Reduce noise: Reasonably designed pattern shape and depth effectively reduce the noise of the tire during driving and improve the driving comfort of the vehicle.

[0029] 4. Improve production efficiency and reduce costs: By updating equipment and optimizing production processes, production accuracy and efficiency are improved and manufacturing costs are reduced.

[0030] In summary, the present invention reduces the weight of the tire through a series of structural designs and process optimization measures, while ensuring that the driving performance and safety of the tire are not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a profile structure distribution diagram of a lightweight tire proposed by the present invention;

[0032] Figure 2 A partial structural schematic diagram of a lightweight tire proposed by the present invention;

[0033] Figure 3 A schematic cross-sectional view of a lightweight tire proposed by the present invention;

[0034] Figure 4 is a schematic diagram of the cross-sectional structure of the steel cord before adjustment;

[0035] Figure 5 Schematic diagram of the cross-sectional structure of the steel cord adjusted according to the present invention

[0036] Figure 6 A first schematic diagram of a production process for a lightweight tire proposed by the present invention;

[0037] Figure 7 A second schematic diagram of a production process for a lightweight tire proposed by the present invention;

[0038] Figure 8 A schematic cross-sectional view of a production process for a lightweight tire proposed in the present invention.

[0039] In the figure: 1 wire ring, 2 wear-resistant rubber strip, 3 chafer, 4 chafer filling rubber strip, 5 sidewall, 6 carcass layer, 7 inner liner, 8 shoulder pad rubber, 9 belt layer, 10 crown, 11 pad rubber, 12 first belt layer body, 13 second belt layer body, 14 third belt layer body, 15 zero-degree belt layer body, 16 tread, 17 apex rubber, 18 carcass, 19 wire wrapper, 20 processing box, 21 feed hopper, 22 motor, 23 transmission rod, 24 first cutting blade, 25 first synchronous belt, 26 first rotating rod, 27 active bevel gear, 28 driven bevel gear, 29 second rotating rod, 30 second cutting blade, 31 second synchronous belt, 32 rotating rod, 33 stirring rod, 34 discharge hopper, 35 dividing plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Reference Figure 1-Figure 3 , a lightweight tire, comprising a bead area, a sidewall area, a carcass layer 6, a belt layer 9 and a crown area distributed from inside to outside;

[0042] The bead area is provided with a steel bead 1, an apex rubber 17 wrapping the steel bead 1, a bead filling rubber strip 4 covering the outside of the apex rubber 17, and a wear-resistant rubber strip 2 and a bead chafer 3 covering the outside of the bead;

[0043] The sidewall area includes the sidewall 5 and the steel wire cloth 19 at the edge of the sidewall 5;

[0044] The carcass layer 6 runs through the entire tire, and the carcass layer 6 includes a carcass 18, and an inner liner layer 7 is provided on the inner side of the carcass layer 6;

[0045] The belt layer 9 comprises a plurality of cross-arranged steel cord bodies and a zero-degree belt layer body 15;

[0046] The crown area includes a crown 10 and an external tread 16 , a cushion rubber 11 is provided between the end of the belt layer 9 and the carcass layer 6 , and a shoulder cushion rubber 8 is provided at the connection between the crown 10 and the sidewall 5 .

[0047] The tire pattern in this embodiment is selected to be a pattern of 12R22.5 TS282, and the dimensions of the tire's tread, sidewall, rubber core, and carcass components are adjusted to meet and adapt to the selected tire pattern, appropriately reduce the running surface width, reduce the amount of tire surface material used, and reasonably control the angle, arrangement, and depth of the pattern. Reducing the pattern depth can effectively reduce the tire weight while reducing the pattern noise and improving driving stability.

[0048] The height of the apex rubber 17 accounts for 20%-50% of the tire section height. The outer side of the apex rubber 17 is connected to the carcass layer 6 through the bead filling strip 4. The outer end point height of the wear-resistant rubber strip 2 is 23%-53% of the section height. The wear-resistant rubber strip 2 covers the end point of the apex rubber 17.

[0049] The carcass layer 6 includes a first belt layer body 12, a second belt layer body 13 and a third belt layer body 14. The steel cord bodies arranged on the first belt layer body 12, the second belt layer body 13 and the third belt layer body 14 are arranged crosswise at 15° to 30°, and the zero-degree belt layer body 15 is wound along the circumferential direction of the tire.

[0050] The steel cord of the carcass component is 0.25+6+12*0.225HT before adjustment, with a wire diameter of 1.17mm, a density of 60, and a thickness of 2.3mm. Figure 4 As shown; after adjustment, it is 3*0.24 / 9*0.225CC ST wire diameter 0.94mm, density 65, thickness 2.1mm, as shown Figure 5 shown.

[0051] The thickness of the bead filling rubber strip 4 decreases from the wire ring 1 to the sidewall 5, and the maximum thickness of the bead filling rubber strip 4 is 10%-25% of the total bead thickness.

[0052] Reference Figure 6-Figure 8 The present invention also discloses a production process for a lightweight tire, comprising the following steps:

[0053] S1: Material preparation, the staff injects natural rubber, carbon black and various chemical raw materials into the processing box 20 respectively, and cuts and crushes the various raw materials through the processing box 20 to facilitate subsequent smelting processing;

[0054] S2: Carcass forming: the shredded raw materials are melted into tire shapes through a forming machine;

[0055] S3: Post-processing, laser engraving of the tread.

[0056] A motor 22 is fixedly connected to the side wall of the processing box 20, and a transmission rod 23 is fixedly connected to the output end of the motor 22. The transmission rod 23 penetrates the processing box 20 and is rotatably connected thereto. A plurality of first cutting blades 24 are fixedly connected to the outer wall of the transmission rod 23. A limiting block is fixedly connected to the top of the processing box 20. A first rotating rod 26 rotatably connected thereto is penetrated on the limiting block. A first synchronous belt 25 is jointly sleeved on the outer wall of the transmission rod 23 and the outer wall of the first rotating rod 26. An active bevel gear 27 is fixedly connected to one end of the first rotating rod 26 close to the feed hopper 21. The active bevel gear 27 is meshed with a driven bevel gear 28. A second rotating rod 29 is fixedly connected to the driven bevel gear 28. The second rotating rod 29 penetrates the processing box 20 and is rotatably connected thereto. A second cutting blade 30 is fixedly connected to the bottom of the second rotating rod 29. A rotating rod 32 rotatably connected thereto is penetrated on the processing box 20. A second synchronous belt 31 is jointly sleeved on the outer wall of the transmission rod 23 and the outer wall of the rotating rod 32. A plurality of stirring rods 33 are fixedly connected to the outer wall of the rotating rod 32.

[0057] The top of the processing box 20 is fixedly connected to a feed hopper 21, the bottom of the processing box 20 is fixedly connected to a discharge hopper 34, the outer wall of the discharge hopper 34 is installed with a first electromagnetic valve, the inner wall of the processing box 20 is fixedly connected to a partition plate 35, the bottom of the partition plate 35 is provided with a discharge hopper connected thereto, and the outer wall of the discharge hopper is installed with a second electromagnetic valve.

[0058] The outer wall of the transmission rod 23 and the outer wall of the first rotating rod 26 are fixedly connected with the first pulley, the first synchronous belt 25 is sleeved on the outer walls of the two first pulleys, the outer wall of the transmission rod 23 and the outer wall of the rotating rod 32 are fixedly connected with the second pulley, and the second synchronous belt 31 is sleeved on the outer walls of the two second pulleys.

[0059] In the present invention, the motor 22 is started, and the staff injects the natural rubber, carbon black and various chemical raw materials into the processing box 20 through the feed hopper 21 respectively. When the natural rubber is injected into the processing box 20, the output end of the motor 22 drives the transmission rod 23, the first synchronous belt 25, the first rotating rod 26, the driving bevel gear 27, the driven bevel gear 28, the second rotating rod 29 and the second cutting blade 30 to rotate. The rotation of the second cutting blade 30 can cut the injected large volume of natural rubber into small volume natural rubber. The rotation of the transmission rod 23 drives the plurality of first cutting blades 24 The rotation can cut and crush small volumes of natural rubber; the second electromagnetic valve is opened to allow the cut natural rubber to fall into the bottom of the processing box 20, and the remaining carbon black and various chemical raw materials are injected again through the feed hopper 21, and finally the various raw materials are piled at the bottom of the processing box 20. The transmission rod 23 rotates to drive the second synchronous belt 31, the rotating rod 32 and the plurality of stirring rods 33 to rotate, so that the various raw materials can be stirred to mix them evenly, and the uniform mixing of the various raw materials can be achieved. The first electromagnetic valve is opened to discharge the mixed various raw materials, and finally they are injected into the molding machine for tire production.

[0060] The following is a comparison table of tire structure adjustment weight:

[0061] part Before adjustment After adjustment Single pregnancy weight loss Tread 17.5 17 0.5 Sidewall 3.95 3.3 1.3 Rubber core 2.75 2.5 0.5 Carcass 8.45 6.38 2.07 Embryo 74.98 70.61 4.37

[0062] The following is a tire durability performance comparison table:

[0063]

[0064]

[0065] The following is a comparison of the performance of tires during high-speed testing:

[0066] Sample Sample tire before weight loss Weight loss sample tire High-speed driving time 89min 98min Outer circumference 3401 3396 Outer diameter 1092 1084 Section width 298 296 Tire condition at the end of the test Crown blister Crown bubble rupture Test conclusion pass pass

[0067] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lightweight tire, comprising a bead area, a sidewall area, a carcass layer (6), a belt layer (9) and a crown area, which are arranged from inside to outside, characterized in that: The tire bead region is provided with a steel bead (1), an apex rubber (17) wrapping the steel bead (1), a tire bead filling rubber strip (4) covering the outside of the apex rubber (17), and a wear-resistant rubber strip (2) and a tire bead chafer (3) covering the outside of the tire bead; The sidewall region includes the sidewall (5) and the steel wire cloth (19) at the edge of the sidewall (5); The carcass layer (6) runs through the entire tire, the carcass layer (6) comprises a carcass (18), and an inner liner layer (7) is provided on the inner side of the carcass layer (6); The belt layer (9) comprises a plurality of cross-arranged steel cord bodies and a zero-degree belt layer body (15); The crown area includes a crown (10) and an external tread (16); a cushion rubber (11) is provided between the end of the belt layer (9) and the carcass layer (6); and a shoulder cushion rubber (8) is provided at the connection between the crown (10) and the sidewall (5).

2. A lightweight tire according to claim 1, characterized in that: The height of the apex rubber (17) accounts for 20%-50% of the tire section height, the outer side of the apex rubber (17) is connected to the carcass layer (6) through the tire bead filling rubber strip (4), the outer end point height of the wear-resistant rubber strip (2) is 23%-53% of the section height, and the wear-resistant rubber strip (2) covers the end point of the apex rubber (17).

3. A lightweight tire according to claim 1, characterized in that: The carcass layer (6) includes a first belt layer body (12), a second belt layer body (13) and a third belt layer body (14), the steel cord bodies arranged on the first belt layer body (12), the second belt layer body (13) and the third belt layer body (14) are cross-arranged at 15° to 30°, and the zero-degree belt layer body (15) is wound along the circumferential direction of the tire.

4. A lightweight tire according to claim 1, characterized in that: The thickness of the tire bead filling strip (4) decreases from the wire ring (1) to the tire sidewall (5), and the maximum thickness of the tire bead filling strip (4) is 10%-25% of the total tire bead thickness.

5. A production process for a lightweight tire according to claim 1, characterized in that: The following steps are involved: S1: Material preparation, the staff injects natural rubber, carbon black and various chemical raw materials into the processing box (20) respectively, and cuts and crushes the various raw materials through the processing box (20) to facilitate subsequent smelting processing; S2: Carcass forming: the shredded raw materials are melted into tire shapes through a forming machine; S3: Post-processing, laser engraving of the tread.

6. A lightweight tire production process according to claim 5, characterized in that: The side wall of the processing box (20) is fixedly connected to a motor (22), the output end of the motor (22) is fixedly connected to a transmission rod (23), the transmission rod (23) passes through the processing box (20) and is rotatably connected thereto, the outer wall of the transmission rod (23) is fixedly connected to a plurality of first cutting blades (24), the top of the processing box (20) is fixedly connected to a limit block, the limit block passes through a first rotating rod (26) rotatably connected thereto, the outer wall of the transmission rod (23) and the outer wall of the first rotating rod (26) are jointly sleeved with a first synchronous belt (25), and one end of the first rotating rod (26) close to the feed hopper (21) is fixedly connected to the processing box (20) and the outer wall of the transmission rod (23) and the first rotating rod (26) are fixedly connected to the processing box (20) and ... and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (20) and the processing box (2 A driving bevel gear (27) is fixedly connected to the driving bevel gear (27), the driving bevel gear (27) is meshed with a driven bevel gear (28), a second rotating rod (29) is fixedly connected to the driven bevel gear (28), the second rotating rod (29) passes through the processing box (20) and is rotatably connected thereto, a second cutting blade (30) is fixedly connected to the bottom of the second rotating rod (29), a rotating rod (32) rotatably connected thereto is passed through the processing box (20), a second synchronous belt (31) is commonly sleeved on the outer wall of the transmission rod (23) and the outer wall of the rotating rod (32), and a plurality of stirring rods (33) are fixedly connected to the outer wall of the rotating rod (32).

7. A lightweight tire production process according to claim 6, characterized in that: The top of the processing box (20) is fixedly connected to a feed hopper (21), the bottom of the processing box (20) is fixedly connected to a discharge hopper (34), the outer wall of the discharge hopper (34) is installed with a first electromagnetic valve, the inner wall of the processing box (20) is fixedly connected to a partition plate (35), the bottom of the partition plate (35) is provided with a discharge hopper connected thereto, and the outer wall of the discharge hopper is installed with a second electromagnetic valve.

8. The production process of a lightweight tire according to claim 6, characterized in that: The outer wall of the transmission rod (23) and the outer wall of the first rotating rod (26) are both fixedly connected with a first pulley, the first synchronous belt (25) is sleeved on the outer walls of the two first pulleys, the outer wall of the transmission rod (23) and the outer wall of the rotating rod (32) are both fixedly connected with a second pulley, and the second synchronous belt (31) is sleeved on the outer walls of the two second pulleys.

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