Double-layer tire and uniformity detection device thereof

Abstract

The present application discloses a double-layer tire and a uniformity detection device thereof, relating to the technical field of tire manufacturing, comprising a double-layer tire, a rotating column and a mounting seat for mounting the double-layer tire, the mounting seat being provided with a sealing clamping member that clamps the upper and lower edges of the double-layer tire, and the mounting seat being provided with an inflation component that acts on the inner side of the double-layer tire, the inflation component being provided with a pressure gauge, and the rotating column being provided with a pressing box and a crimping member. The technical advantages of the present application are: a tire made of a formula of an outer layer of wear-resistant rubber material and an inner layer of foaming rubber material does not need to be assembled with an inner tube or inflated before being used directly, thereby solving the problem of inner tube leakage or blowout affecting use; the inflation component inflates the inside of the double-layer tire, and uses the rotating column to drive the pressing box and the crimping member to rotate around the double-layer tire, during which the crimping member presses the double-layer tire to cause deformation, and uses the pressure gauge to perform real-time detection of the pressure value generated by the deformation during the circumferential rotation, thereby realizing uniformity detection inside the double-layer tire.

Description

Technical Field

[0001] The present application relates to the technical field of tire manufacturing, and in particular to a double-layer tire and a uniformity detection device thereof. Background Art

[0002] Currently, popular automobile tires on the market are divided into two categories: tube-type and tubeless. Tube-type tires are traditional, while tubeless tires are commonly known as vacuum tires. Vacuum tires consist of a tube tightly bonded to a specially constructed rim, forming a sealed inner cavity. These tires can continue driving even with small punctures, and mid-trip repairs are easier than with tube-type tires, without the need to remove the rim. Therefore, in some cases, a spare tire can be omitted, improving driving safety. Furthermore, these tires offer improved flexibility, improving cushioning performance, generating less heat at high speeds, and maintaining a low operating temperature, extending the tire's service life. However, if a vacuum tire has a large puncture, it will deflate quickly, making it impossible to continue driving. This can be extremely inconvenient and even pose a safety hazard if a spare tire is not carried and the vehicle is far from a repair shop.

[0003] If a new type of tire is designed that combines the advantages of both inner tube tires and tubeless tires, it is also necessary to consider how to conduct uniformity testing on the tire before it leaves the factory to improve tire quality; and how to conduct effective, multi-directional and accurate testing of the tread of the new tire have become technical problems that technical personnel in this field urgently need to solve. Summary of the Invention

[0004] This device provides a double-layer tire and uniformity detection device, the specific implementation is as follows:

[0005] A double-layer tire, comprising:

[0006] The outer layer is composed of 30-40 parts of natural rubber, 20-30 parts of styrene-butadiene rubber, 30-40 parts of butadiene rubber, 55-60 parts of 220 carbon black, 8-10 parts of aromatic oil, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of antioxidant 4020, 2-3 parts of RD, 1-3 parts of microcrystalline wax, 5-10 parts of anti-wear agent, 1.5-2 parts of sulfur, and 1-2 parts of accelerator NS;

[0007] The inner layer tire is composed of 60-80 parts of natural rubber, 20-40 parts of styrene-butadiene rubber, 50-55 parts of 660 carbon black, 30-50 parts of light calcium, 8-10 parts of aromatic oil, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of antioxidant 4020, 2-3 parts of RD, 5-8 parts of foaming agent, 1.5-2 parts of sulfur, and 1-2 parts of accelerator NS.

[0008] Preferably, the preparation process of the masterbatch of the outer layer tire is as follows: natural rubber is plasticized for 2 minutes, styrene-butadiene rubber, butadiene rubber, small additives and 1 / 2 weight portion of carbon black are added, plasticized for 2 minutes, the remaining 1 / 2 weight portion of carbon black and aromatic oil are added and plasticized for 3 minutes, the lumps are lifted and cleaned, and then pressed for 1 minute, and the temperature is above 160°C for rubber removal; the final rubber preparation process of the outer layer tire is as follows: the masterbatch is preheated in the internal mixer for 30 seconds, sulfur and accelerator small ingredients are added for 30 seconds, and the rubber is removed below 95°C.

[0009] Preferably, the preparation process of the masterbatch of the inner layer tire is as follows: natural rubber plasticizing for 2 minutes, adding small additives and carbon black for 2 minutes, adding light calcium and aromatic oil for 3 minutes, lifting and cleaning, pressing for another 1 minute, and discharging the rubber after the temperature is above 140°C; the final rubber mixing preparation process of the inner layer tire is as follows: preheating the masterbatch in the internal mixer for 30 seconds, adding small sulfur, accelerator and foaming agent for 30 seconds, and discharging the rubber below 95°C.

[0010] Based on the above technical solution, the tire made of the outer layer of wear-resistant rubber compound and the inner layer of foaming rubber compound does not need to be assembled with an inner tube or inflated before it can be used directly, thus solving the problem of inner tube leakage or blowout affecting its use.

[0011] A double-layer tire uniformity detection device, comprising:

[0012] A mounting base for mounting a double-layer tire, the mounting base being provided with sealing clamps for clamping the upper and lower edges of the double-layer tire, and an inflation assembly acting on the inner side of the double-layer tire being arranged on the mounting base, the inflation assembly being provided with a pressure gauge;

[0013] A rotating column is arranged on the circumferential side of the mounting seat, and a pressing box and a crimping piece are provided on the rotating column. The pressing box is provided with a distance adjustment component that acts on the crimping piece to push it out. The crimping piece is crimped to the outer side of the double-layer tire to cause it to deform. The pressure change inside the tire during the circumferential rotation of the crimping piece around the double-layer tire is detected by a pressure gauge to perform uniformity detection.

[0014] Based on the above technical solution, gas is injected into the double-layer tire through the inflation assembly, and then a rotating column is used to drive the pressing box and the crimping parts inside it to perform circular motion around the double-layer tire. During this process, the crimping parts will apply pressure to the double-layer tire, causing it to produce a certain amount of deformation. At the same time, the pressure gauge will record and analyze the changes in pressure values ​​generated during this deformation process in real time, thereby accurately evaluating the uniformity inside the double-layer tire; the rotating column is set to a gear disc structure driven by a conventional motor, and there is also a solenoid valve on the pipeline of the inflation assembly, which is opened during inflation and closed during testing.

[0015] Preferably, the crimping part includes a pressing ball and a limiting sleeve rotatably arranged on the upper and lower ends of the pressing ball; the pressing box is a C-shaped seat, and a second guide groove is provided on the upper and lower sides thereof for sliding connection to the handle end of the limiting sleeve, and a reset spring is arranged between the two.

[0016] Preferably, the distance adjustment assembly is composed of no less than three guide balls, each guide ball is evenly distributed and abuts against the pressing ball, and the rod portion of each guide ball is provided with a first guide groove for radial movement, and a limit spring is provided between the first guide groove and the rod portion; the distance adjustment assembly also includes a motor, and a pull rope is provided between the rod portions of each guide ball, and the pull rope is also wrapped around the output end of the motor.

[0017] Based on the above technical solution, guide balls are set during the circumferential rotation of the pressing ball. These guide balls can prompt the pressing ball to rotate, thereby effectively reducing the friction during rotation; in addition, the spacing between adjacent guide balls can be flexibly adjusted through the distance adjustment component, and the force applied by the pressing ball to the double-layer tire can be precisely controlled to meet different detection requirements.

[0018] Preferably, a positioning slot plate is provided on the C-shaped seat, the direction of the slot opening of which is consistent with the first guide slot, and the pull rope and the guide ball are respectively provided on both sides of the positioning slot plate.

[0019] Preferably, both ends of the opening of the C-shaped seat are provided with inwardly inclined barb structures, and the end surfaces of the barbs are configured as damping layers that can act on the pressing ball.

[0020] Preferably, the rotating column and the pressing box are rotatably connected through an elastic rotating seat. The elastic rotating seat includes a fixed block arranged on the back of the pressing box. The side of the fixed block is rotatably connected to the hinged seat extending outward from the rotating column through a positioning rod, and a lifting seat is provided at the bottom of the mounting seat. A spring rod structure is provided between the fixed block and the rotating column; the spring rod structure is provided with an angle sensor at the end of the rotating column, and a pressure sensor is integrated on the hinged seat.

[0021] Based on the above technical solution, by setting a damping layer, the distance adjustment component can lock the pressing ball when it is pushed out to the limit distance, and the mounting seat can also be equipped with a corresponding conventional rotation structure, and the external uniformity detection can be achieved through the pressure sensor, the fixed pressing ball, and the rotating double-layer tire; by introducing the elastic rotating seat, the angle sensor and the lifting seat, the pressing ball can perform a pressing-type uniformity detection on the middle and circumferential parts of the double-layer tire table, thereby ensuring the comprehensiveness and accuracy of the detection process, so that each area of ​​the double-layer tire can be evaluated by uniformity detection.

[0022] Preferably, the mounting plates are connected via a hollow connecting rod, and an air guide port communicating with the interior of the double-layer tire is provided on the hollow connecting rod.

[0023] In summary, this application has the following beneficial technical effects:

[0024] 1. The tire of the present invention is made of the outer layer of wear-resistant rubber and the inner layer of foaming rubber. It does not need to be assembled with an inner tube or inflated, and can be used directly, thus solving the problem of inner tube leakage or blowout affecting the use.

[0025] 2. This invention inflates the interior of a double-layer tire through an inflation assembly. A rotating column drives the pressing box and crimping member to rotate around the double-layer tire. During this rotation, the crimping member compresses the double-layer tire, causing deformation. During this circumferential rotation, a pressure gauge is used to measure the pressure generated by the deformation in real time, thereby achieving uniformity testing within the double-layer tire.

[0026] 3. The present invention reduces friction by providing guide balls that rotate in their own direction as the pressing balls rotate circumferentially. The spacing between adjacent guide balls can be adjusted by using a distance adjustment assembly to push the pressing balls out, thereby adjusting the force exerted by the pressing balls on the double-layer tire.

[0027] 4. The present invention provides an elastic rotating seat, an angle sensor and a lifting seat, so that the pressing ball can perform a pressing uniformity test on different parts of the entire double-layer tire, thereby achieving comprehensive detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of the structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the pressing box and the pressing piece in the present invention. Figure 1 ;

[0032] Figure 5 This is a schematic diagram of the structure of the pressing box and the pressing piece in the present invention. Figure 2 ;

[0033] Figure 6 It is a cross-sectional schematic diagram of the pressing box and the pressing piece structure in the present invention;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of the distance adjustment component in the present invention. Figure 1 ;

[0035] Figure 8 This is a schematic diagram of the cross-sectional structure of the distance adjustment component in the present invention. Figure 2 ;

[0036] Figure 9 It is a schematic diagram of the adjustment structure of the double-layer tire and the crimping piece in the present invention;

[0037] Figure 10 This is a schematic diagram of the explosion structure of the press box in the present invention

[0038] Figure 11 This is a graph showing the results of a high-speed performance test of a double-sided tire in the present invention;

[0039] Figure 12 This is a graph showing the results of a strength performance test of a double-sided tire in the present invention;

[0040] Figure 13 This is a result diagram of the durability performance test of the double-sided tire in the present invention.

[0041] Description of reference numerals:

[0042] 1. Lifting seat, 2. Mounting seat, 3. Inflatable assembly, 4. Rotating column, 5. Press box, 6. Press fitting, 7. Elastic rotating seat, 8. Pressure gauge, 9. Distance adjustment assembly, 10. Double tire, 11. Pressure sensor, 12. Angle sensor,

[0043] 201. Mounting plate, 202. Sealing clamp, 203. Hollow connecting rod, 204. Air guide port, 401. Articulated seat, 501. C-shaped seat, 502. First guide slot, 503. Second guide slot, 504. Side sealing plate, 505. Damping layer, 601. Pressing ball, 602. Limiting sleeve, 603. Return spring, 701. First spring rod, 702. Second spring rod, 703. Fixed block, 704. Positioning rod, 901. Guide ball, 902. Positioning slot plate, 903. Motor, 904. Pull rope, 905. Guide wheel, 906. Chain, 907. Limiting spring, 1001. Deformation point, 1002. Outer tire, 1003. Inner tire. DETAILED DESCRIPTION

[0044] The following describes the specific implementation of the invention in conjunction with the accompanying drawings and embodiments:

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the invention without affecting the efficacy and purpose that can be achieved by the invention.

[0046] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.

[0047] The following is combined with Figures 1-13 This application is described in further detail.

[0048] The embodiments of the present application disclose a double-layer tire and a uniformity detection device thereof.

[0049] Example 1

[0050] Reference Figures 1 to 13 This embodiment discloses a double-layer tire, including an outer tire 1002 and an inner tire 1003. The outer tire 1002 is composed of 30-40 parts of natural rubber, 20-30 parts of styrene-butadiene rubber, 30-40 parts of butadiene rubber, 55-60 parts of 220 carbon black, 8-10 parts of aromatic oil, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of antioxidant 4020, 2-3 parts of RD, 1-3 parts of microcrystalline wax, and 5-10 parts of wear-resistant agent. 1.5-2 parts of sulfur, 1-2 parts of accelerator NS, the inner layer tire 1003 is composed of 60-80 parts of natural rubber, 20-40 parts of styrene-butadiene rubber: 50-55 parts of 660 carbon black, 30-50 parts of light calcium, 8-10 parts of aromatic oil, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of antioxidant 4020, 2-3 parts of RD, 5-8 parts of foaming agent, 1.5-2 parts of sulfur, and 1-2 parts of accelerator NS.

[0051] The preparation process of the masterbatch of the outer layer tire 1002 is as follows: natural rubber is plasticized for 2 minutes, styrene-butadiene rubber, butadiene rubber, small additives and 1 / 2 weight portion of carbon black are added, plasticized for 2 minutes, the remaining 1 / 2 weight portion of carbon black and aromatic oil are added and plasticized for 3 minutes, the lumps are lifted and cleaned, and then pressed for 1 minute, and the temperature is above 160°C for rubber removal. The final rubber preparation process of the outer layer tire 1002 in this structure is as follows: the masterbatch is preheated in the internal mixer for 30 seconds, sulfur and small accelerators are added for 30 seconds, and the rubber is removed below 95°C.

[0052] The preparation process of the masterbatch of the inner layer tire 1003 is as follows: natural rubber plasticizing for 2 minutes, adding small additives and carbon black for 2 minutes, adding light calcium and aromatic oil for 3 minutes, lifting and cleaning, pressing for another 1 minute, and discharging the rubber after the temperature is above 140°C. The final rubber preparation process of the inner layer tire 1003 in this structure is as follows: preheating the masterbatch in the internal mixer for 30 seconds, adding small sulfur, accelerator and foaming agent for 30 seconds, and discharging the rubber below 95°C.

[0053] Example 2

[0054] Reference Figures 1 to 3, and based on the above embodiment, this embodiment further discloses a double-layer tire uniformity detection device, including a mounting base 2 for mounting a double-layer tire 10 and a rotating column 4 arranged on the circumferential side of the mounting base 2, the mounting base 2 is provided with a sealing clamping member 202 for clamping the upper and lower edges of the double-layer tire 10, and the mounting base 2 is provided with an inflation component 3 acting on the inner side of the double-layer tire 10, the inflation component 3 is provided with a pressure gauge 8, the rotating column 4 is provided with a pressing box 5 and a crimping member 6, the pressing box 5 is provided with a distance adjustment component 9 acting on the crimping member 6 to push it out, the crimping member 6 is crimped to the outer side of the double-layer tire 10 to cause it to deform, and the pressure gauge 8 is used to detect the pressure change inside the tire during the circumferential rotation of the crimping member 6 around the double-layer tire 10 to perform uniformity detection.

[0055] The crimping part 6 includes a pressing ball 601 and a limiting sleeve 602 rotatably arranged on the upper and lower ends of the pressing ball 601. The pressing box 5 is a C-shaped seat 501, and a second guide groove 503 is provided on the upper and lower parts thereof to slide in connection with the handle end of the limiting sleeve 602, and a reset spring 603 is provided between the two. The mounting plates 201 are connected by a hollow connecting rod 203, and the hollow connecting rod 203 is provided with an air guide port 204 that communicates with the interior of the double-layer tire 10.

[0056] The specific implementation process is as follows: place the double-layer tire 10 on the mounting seat 2 and clamp and seal it with the sealing clamp 202; open the inflation assembly 3 to inflate the double-layer tire 10, and then make the pressing ball 601 squeeze the double-layer tire 10 to produce a deformation point 1001; the rotating column 4 drives the pressing ball 601 to rotate along the circumference of the double-layer tire 10, during which the value of the pressure gauge 8 is detected in real time.

[0057] Example 3

[0058] Reference Figures 4 to 8 , and based on the above embodiment, this embodiment further discloses a double-layer tire uniformity detection device, the distance adjustment component 9 is composed of a motor 903 and no less than three guide balls 901, each guide ball 901 is evenly distributed and abuts against the pressing ball 601, and the rod portion of each guide ball 901 is provided with a first guide groove 502 for radial movement, a limit spring 907 is provided between the first guide groove 502 and the rod portion, a pull rope 904 is provided between the rod portions of each guide ball 901, and the pull rope 904 is also wound around the output end of the motor 903. In this structure, the motor 903 is connected to the guide wheel 905 through the chain 906, and the pull rope 904 can be wound around the guide wheel 905, thereby realizing the adjustment of the installation position of the motor 903.

[0059] A positioning slot plate 902 is provided on the C-shaped seat 501, and the direction of its slot is consistent with the first guide slot 502, and the pull rope 904 and the guide ball 901 are respectively provided on both sides of the positioning slot plate 902. In this structure, side sealing plates 504 are provided on both sides of the C-shaped seat 501.

[0060] Example 4

[0061] Reference Figures 4 to 9 Based on the above embodiment, this embodiment also discloses a double-layer tire uniformity detection device, in which the rotating column 4 and the pressing box 5 are rotatably connected through an elastic rotating seat 7, and the elastic rotating seat 7 includes a fixed block 703 provided on the back of the pressing box 5, and the side of the fixed block 703 is rotatably connected to the hinged seat 401 extending outward from the rotating column 4 through a positioning rod 704, and a lifting seat 1 is provided at the bottom of the mounting seat 2, and a first spring rod 701 and a second spring rod 702 are respectively provided between the upper and lower parts of the fixed block 703 and the rotating column 4, and the first spring rod 701 is provided with an angle sensor 12 for inclination detection at the end of the rotating column 4. In this structure, the position of the deformation point 1001 on the double-layer tire 10 is forced to change vertically through the lifting and lowering of the lifting seat 1, thereby realizing uniformity detection of different parts, and the spring rod structure allows the pressing box 5 to be reset after the inclination angle changes.

[0062] Example 5

[0063] Reference Figures 1 to 10 Based on the above embodiments, this embodiment further discloses a double-layer tire uniformity detection device. Inwardly inclined hook structures are provided at both ends of the opening of the C-shaped seat 501. The end faces of the hooks are configured as damping layers 505 that can act on the pressing ball 601. A conventional motor gear-type rotation structure is provided between the mounting seat 2 and the lifting seat 1. A pressure sensor 11 is integrated on the articulated seat 401. In this structure, the damping layer 505 can also be configured to have a contour that matches the pressing ball 601.

[0064] The specific implementation process is as follows: the distance adjustment component 9 pushes the pressing ball 601 out to abut against the damping layer 505, so that the pressing ball 601 is locked; the mounting seat 2 and the double-layer tire 10 are driven to rotate through the self-rotation structure, and the circumferential uniformity of the outside can also be detected through the pressure sensor 11; at the same time, the lifting seat 1 can also be used to realize the vertical adjustment of the detection part on the double-layer tire 10.

[0065] Many other changes and modifications may be made without departing from the spirit and scope of the invention. It should be understood that the invention is not limited to the specific embodiments, and the scope of the invention is defined by the appended claims.

Claims

1. A double-layer tire uniformity detection device, comprising: A mounting seat (2) for mounting a double-layer tire (10), the mounting seat (2) being provided with a sealing clamping member (202) for clamping the upper and lower edges of the double-layer tire (10), and an inflation component (3) acting on the inner side of the double-layer tire (10) being arranged on the mounting seat (2), the inflation component (3) being provided with a pressure gauge (8); A rotating column (4) is provided on the peripheral side of the mounting seat (2), and a pressing box (5) and a crimping member (6) are provided on the rotating column (4). A distance adjustment component (9) is provided in the pressing box (5) for acting on the crimping member (6) to push it out. The crimping member (6) is crimped to the outer side of the double-layer tire (10) to cause deformation. The pressure change inside the tire during the circumferential rotation of the crimping member (6) around the double-layer tire (10) is detected by the pressure gauge (8) to perform uniformity detection. The pressing member (6) comprises a pressing ball (601) and a limiting sliding sleeve (602) rotatably arranged at the upper and lower ends of the pressing ball (601); The pressing box (5) is a C-shaped seat (501), and a second guide slot (503) is provided on the upper and lower sides thereof for slidingly connecting to the handle end of the limiting sleeve (602), and a return spring (603) is provided between the two. The distance adjustment assembly (9) is composed of no less than three guide balls (901), each of the guide balls (901) is evenly arranged and abuts against the pressing ball (601), and the rod portion of each guide ball (901) is provided with a first guide slot (502) that moves radially, and a limit spring (907) is provided between the first guide slot (502) and the rod portion; The distance adjustment component (9) further includes a motor (903), a pull rope (904) is provided between the rods of each of the guide balls (901), and the pull rope (904) is also wound around the output end of the motor (903); The rotating column (4) and the pressing box (5) are rotatably connected via an elastic rotating seat (7), the elastic rotating seat (7) comprising a fixed block (703) provided on the back of the pressing box (5), the side of the fixed block (703) being rotatably connected to a hinged seat (401) extending outward from the rotating column (4) via a positioning rod (704), and a lifting seat (1) being provided at the bottom of the mounting seat (2), and a spring rod structure being provided between the fixed block (703) and the rotating column (4); The spring rod structure is provided with an angle sensor (12) at the end of the rotating column (4), and a pressure sensor (11) is integrated on the hinge seat (401).

2. A double-layer tire uniformity detection device according to claim 1, characterized in that: A positioning slot plate (902) is provided on the C-shaped seat (501), the slot direction of which is consistent with the first guide slot (502), and the pull rope (904) and the guide ball (901) are respectively provided on both sides of the positioning slot plate (902).

3. A double-layer tire uniformity detection device according to claim 2, characterized in that: Both ends of the opening of the C-shaped seat (501) are provided with inwardly inclined barb structures, and the end surfaces of the barbs are configured to act on the damping layer (505) of the pressing ball (601).

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