Run-flat tire with improved high-speed performance and tread processing equipment therefor

Abstract

The application relates to the technical field of tread processing, in particular to a run-flat tire with improved high-speed performance and a tread processing equipment thereof, which specifically comprises a base and a top frame, the base is fixedly installed at the bottom of the top frame, the top of the base is provided with two sliding seats, the top of each sliding seat is fixedly installed with a sliding rail through a cushion block, the inside of the sliding rail is slidably connected with a sliding bottom plate, the top of the sliding bottom plate is fixedly installed with two arc-shaped rails, the top of one side of the sliding seat is fixedly installed with a support, and the top of the cushion block is fixedly installed with an axle seat; the application divides an arc-shaped expansion plate into two parts to synchronously expand and eliminate the gap, and sets an arc-shaped frame with a guide roller, so that the problems of deformation and non-tight fitting when the outer cover layer is fitted with the tire are solved, the fitting precision and the tire quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tread processing, in particular to a run-flat tire with improved high-speed performance and a tread processing equipment thereof. BACKGROUND

[0002] Automobile tires have many important functions, not only supporting the weight of the vehicle including itself, passengers and cargo, etc., evenly distributing pressure on the ground, but also transmitting the power generated by the engine to drive the vehicle forward, and using the friction with the ground to stop the vehicle when braking, and changing the direction of vehicle travel by steering, and reducing the impact of road unevenness on the vehicle body and passengers through its elasticity and cushioning, and increasing friction with the ground through pattern design to ensure the stability and safety of the vehicle on various road surfaces, playing an indispensable key role in the operation of the vehicle.

[0003] In the tire production process, after the outer cover is wrapped around the outside of the tire, the rolling wheel fitting step has many problems: on the one hand, the elastic properties of the outer cover material and the tire itself are prone to change from a circular shape to an elliptical shape or other shapes due to centrifugal force and mechanical stress during actual high-speed rotation, making it difficult to fit tightly and uniformly, often resulting in loose fitting, gaps, wrinkles, stretching and other adverse phenomena, which not only damages the surface flatness and integrity of the tire, but also reduces its wear resistance, stability and safety during subsequent use, and shortens its service life.

[0004] On the other hand, there are a large number of gaps between the arc plates of the traditional tire inner circle support device, which makes it difficult for the tire to receive uniform and stable support force during fitting, and these gaps cause the tire to lack effective support in some areas during high-speed rotation, exacerbating the degree of tire deformation, and may also cause vibration and deviation, further increasing the difficulty of fitting the outer cover to the tire, and seriously affecting the overall quality and performance of the tire.

[0005] In view of the above technical defects, a solution is proposed. SUMMARY

[0006] The purpose of the present application is to provide a run-flat tire with improved high-speed performance and a tread processing equipment thereof to solve the problems mentioned in the background.

[0007] To achieve the above purpose, the present application provides the following technical solution: a tread processing equipment for a run-flat tire with improved high-speed performance, comprising a base and a top frame, the base is fixedly installed at the bottom of the top frame, the top of the base is provided with two sliding seats, the top of the sliding seat is fixedly installed with a sliding rail through a cushion block, the inside of the sliding rail is slidably connected with a sliding bottom plate, and the top of the sliding bottom plate is fixedly installed with two arc-shaped rails.

[0008] The top side of the sliding seat is fixedly installed with a support, the top of the cushion block is fixedly installed with an axle seat, the inside of the axle seat is movably connected with a rotating shaft through a bearing, one end of the axle seat is provided with a limiting rotating rod, one end of the limiting rotating rod is fixedly connected with the rotating shaft, the end of the limiting rotating rod away from the rotating shaft is fixedly connected with a positioning shaft, and the outside of the positioning shaft is provided with arc-shaped expansion plates arranged in an annular array with the center of the cross section of the positioning shaft as the center.

[0009] Preferably, the outside of the limiting rotating rod is movably connected with a sliding sleeve one, two annular hoops are fixedly installed on the outside of the sliding sleeve one in a sleeved manner, and the annular hoops are movably connected in the arc-shaped tracks arranged below.

[0010] Preferably, the outside of the positioning shaft is movably connected with a sliding sleeve two, one end of the sliding sleeve two is fixedly connected with the sliding sleeve one, one end of the positioning shaft is fixedly connected with a bearing block, and the side walls of the two bearing blocks are respectively fixedly connected with a plug-in sleeve and a plug-in block matched with each other.

[0011] Preferably, a plurality of groups of supports are fixedly installed on the outside of the sliding sleeve two and the bearing block at equal intervals, and a resisting rod one and a resisting rod two are respectively rotatably connected in the supports arranged on the sliding sleeve two and the bearing block.

[0012] The inside wall of the arc-shaped expansion plate is fixedly installed with a limiting sliding frame corresponding in number to the resisting rod one, the end of the resisting rod two away from the bearing block is rotatably connected with the inside wall of the arc-shaped expansion plate, and the end of the resisting rod one away from the sliding sleeve two is movably connected in the limiting sliding frame.

[0013] Preferably, a lower electric push rod and an upper electric push rod are fixedly installed at the top midpoint of the base and the top inside wall midpoint of the top frame, the output ends of the lower electric push rod and the upper electric push rod are fixedly installed with an arc-shaped frame, and a plurality of guide rollers are movably connected in the inside of the arc-shaped frame through bearings.

[0014] Preferably, the two side walls of the arc-shaped frame connected with the bottom end of the upper electric push rod are fixedly connected with support frames, rotating rods are rotatably connected in the support frames, and abutting rollers are installed at the bottom ends of the rotating rods through the frames, the outside walls of the support frames are rotatably connected with electric push rods one, and the output ends of the electric push rods one are rotatably connected with the rotating rods.

[0015] Preferably, the outside of one of the supports is installed with a motor for driving the rotating shaft to rotate, the top of the base is symmetrically provided with a sliding groove one, and the sliding seat is movably connected in the sliding groove one.

[0016] The application also provides a high-speed performance improved run-flat tire, which is made by using a high-speed performance improved run-flat tire tread processing device.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] 1、The arc-shaped expansion plate for supporting the inner circle of the tire is designed into two parts, which are respectively expanded synchronously by corresponding driving mechanisms, thereby completely eliminating a series of drawbacks caused by the gap between the arc-shaped plates in the traditional tire inner circle expansion support mechanism, providing uniform and stable support for the tire during high-speed rotation and fitting, effectively inhibiting the tire deformation caused by the lack of local support, greatly reducing the problems of loose, wrinkles and stretching of the outer cover during fitting, and ensuring that the outer cover and the tire can be tightly and accurately fitted, thereby significantly improving the molding quality and overall performance of the tire.

[0019] 2、The application also provides arc-shaped frames above and below the tire, and guide rollers are installed inside the arc-shaped frames, which form a full-wrapping limiting system, and the tire itself during high-speed rotation or the movement of the outer cover during fitting can be accurately guided and limited, the guide rollers can effectively resist the influence of centrifugal force and mechanical stress on the shape of the outer cover and the tire during the rotation and fitting of the tire, prevent the change from a circular shape to an elliptical or irregular shape, further strengthen the fitting precision between the outer cover and the tire, and effectively guarantee the flatness and integrity of the tire surface. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to facilitate the understanding of those skilled in the art, the application will be further described below with reference to the accompanying drawings;

[0021] Figure 1 The figure is a schematic diagram of the overall structure of the application;

[0022] Figure 2 The figure is a schematic diagram of the limiting rotating rod and the positioning shaft connection in the application;

[0023] Figure 3 The figure is a schematic diagram of the arc-shaped expansion plate structure in the application;

[0024] Figure 4 The figure is a schematic diagram of the sliding sleeve structure in the application;

[0025] Figure 5 The figure is a schematic diagram of the arc-shaped track structure in the application;

[0026] Figure 6 This is a schematic diagram of the ring hoop structure in this invention;

[0027] Figure 7 This is a schematic diagram of the clamping roller structure in this invention;

[0028] Figure 8 This is a cross-sectional view of the run-flat tire structure for improving high-speed performance in this invention.

[0029] Reference numerals: 100, base; 200, top frame; 300, sliding seat; 401, slide rail; 402, sliding base plate; 403, arc-shaped track; 501, axle seat; 502, limiting rotating rod; 503, positioning shaft; 504, arc-shaped expansion plate; 600, electric push rod one; 700, plug-in sleeve; 8, plug-in block; 901, sliding sleeve one; 902, sliding sleeve two; 903, ring hoop; 10, abutting rod one; 11, abutting rod two; 12, limiting slide frame; 13, guide roller; 14, support frame; 15, clamping roller; 16, lower electric push rod; 17, upper electric push rod; 1, tread; 2, inner liner; 3, sidewall; 4, crown belt layer; 5, belt layer; 6, cord layer; 7, support rubber. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: As Figures 1-8 As shown, a tread processing device for run-flat tires with improved high-speed performance includes a base 100 and a top frame 200. The base 100 is fixedly installed at the bottom of the top frame 200. Two sliding seats 300 are provided on the top of the base 100. A motor for driving the rotating shaft is installed on the outer side of one of the seats. A sliding groove is symmetrically opened on the top of the base 100, and the sliding seat 300 is slidably connected in the sliding groove.

[0032] like Figure 1 As shown, the two grooves on the top of the base 100 are each connected to a threaded rod by a bearing. The sliding seat 300 is rotatably connected to the threaded rod, and a motor for driving the threaded rod to rotate is fixedly installed on the outside of the base 100. The reciprocating movement of the sliding seat 300 is achieved by driving the threaded rod to rotate through the motor.

[0033] The top of the sliding seat 300 is fixedly installed with a sliding rail 401 through a cushion block, the inside of the sliding rail 401 is slidably connected with a sliding bottom plate 402, the top of the sliding bottom plate 402 is fixedly installed with two arc-shaped rails 403, it needs to be explained that the inside of the sliding rail 401 is also movably connected with a threaded rod through a bearing, and the outside of the sliding rail 401 is also installed with a motor for driving the threaded rod in the sliding rail 401 to rotate, the motor drives the threaded rod in the sliding rail 401 to further drive the sliding bottom plate 402 to reciprocate;

[0034] One side of the top of the sliding seat 300 is fixedly installed with a support, the top of the cushion block is fixedly installed with an axle seat 501, the inside of the axle seat 501 is movably connected with a rotating shaft through a bearing, one end of the axle seat 501 is provided with a limiting rotating rod 502, one end of the limiting rotating rod 502 is fixedly connected with the rotating shaft, the end of the limiting rotating rod 502 away from the rotating shaft is fixedly connected with a positioning shaft 503, the outside of the positioning shaft 503 is provided with arc-shaped expansion plates 504 with the center of the cross section of the positioning shaft 503 as the center and arranged in an annular array, the arc-shaped expansion plates 504 are used for supporting the inner side wall of the tire.

[0035] The outside of the limiting rotating rod 502 is slidably connected with a sliding sleeve one 901, the outside of the sliding sleeve one 901 is fixedly installed with two annular hoops 903, the annular hoops 903 are slidably connected in the arc-shaped rails 403 arranged below and corresponding to the annular hoops 903, the arrangement of the arc-shaped rails 403 can realize the movement of the sliding sleeve one 901 through the cooperation of the arc-shaped rails 403 and the annular hoops 903, and can also assist in supporting the sliding sleeve one 901 during the rotation of the sliding sleeve one 901.

[0036] The outside of the positioning shaft 503 is slidably connected with a sliding sleeve two 902, one end of the sliding sleeve two 902 is fixedly connected with the sliding sleeve one 901, one end of the positioning shaft 503 is fixedly connected with a bearing block, the side walls of the two bearing blocks are respectively fixedly connected with a plug-in sleeve 700 and a plug-in block 8 matched with each other, and the cross sections of the plug-in sleeve 700 and the plug-in block 8 are polygonal, when the plug-in block 8 enters the inside of the plug-in sleeve 700, an external motor drives the limiting rotating rod 502 on one side, thereby driving the limiting rotating rod 502 on the other side to rotate synchronously.

[0037] A plurality of groups of supports are fixedly installed on the outside of the sliding sleeve two 902 and the bearing block at equal intervals, and a abutting rod one 10 and an abutting rod two 11 are rotatably connected in the supports arranged in the sliding sleeve two 902 and the bearing block, respectively;

[0038] A plurality of groups of supports are fixedly installed on the outside of the sliding sleeve two 902 and the bearing block at equal intervals, and a abutting rod one 10 and an abutting rod two 11 are rotatably connected in the supports arranged in the sliding sleeve two 902 and the bearing block, respectively;

[0039] The midpoint of the top of the base 100 and the midpoint of the inner wall of the top of the frame 200 are fixedly installed with a lower electric push rod 16 and an upper electric push rod 17, the output ends of the lower electric push rod 16 and the upper electric push rod 17 are fixedly installed with an arc-shaped frame, the inside of the arc-shaped frame is movably connected with a plurality of groups of guide rollers 13, and the lower electric push rod 16 and the upper electric push rod 17 control the plurality of groups of guide rollers 13 to contact the tire in a surrounding manner through the arc-shaped frame;

[0040] The two side walls of the arc-shaped frame connected with the bottom end of the upper electric push rod 17 are fixedly connected with support frames 14, the support frames 14 are rotatably connected with rotating rods, the bottom ends of the rotating rods are installed with abutting rollers 15 through the frame, and the outer side walls of the support frames 14 are rotatably connected with electric push rods 600, the output ends of the electric push rods 600 are rotatably connected with the rotating rods, and the abutting rollers 15 rotate and abut against the outside of the tread rubber (outer cover);

[0041] First, the prepared outer cover (tread rubber) is sleeved on the outside of the tire body, and then the abutting roller 15 is used to apply pressure, so that the outer cover is tightly attached to the tire body, the function of the roller is to exhaust the air between the abutting roller 15 and the tire body, and ensure that there is no gap between the two, so that the attachment is more firm and flat.

[0042] First, the tire is placed in the vertical state in the midpoint of the base 100 by an external mechanism, and then the outer cover is sleeved on the outside of the tire, at this time the inner wall of the outer cover is adhered to the tire, and the center of the tire is on the same horizontal line with the center of the limiting rotating rod 502, then the motors at both ends of the base 100 are started, the motors drive the threaded rods in the sliding grooves to rotate, thereby further driving the sliding seat 300 to move above the base 100, until the arc-shaped expansion plates 504 on both sides of the base 100 are located on the inside of the tire;

[0043] Further, the motor on the outside of the slide rail 401 is started, the motor drives the threaded rods in the slide rail 401 to rotate, thereby further driving the slide bottom plate 402 and the arc-shaped rail 403 to move synchronously, the arc-shaped rail 403 drives the slide sleeve one 901 and the slide sleeve two 902 to move synchronously through the cooperation of the arc-shaped rail 403 and the annular hoop 903, the slide sleeve one 901 slides on the outside of the limiting rotating rod 502, and the slide sleeve two 902 slides on the outside of the positioning shaft 503;

[0044] As the second sliding sleeve 902 gradually approaches the bearing block, the first abutment rod 10 and the second abutment rod 11 deflect relative to each other, and one end of the first abutment rod 10 slides synchronously within the limiting sliding frame 12, thereby further driving the arc-shaped expansion plate 504 to move outward until the arc-shaped expansion plate 504 presses against the inner wall of the tire. At this time, the arc-shaped expansion plates 504 respectively set in the two sliding seats 300 fit together tightly, thereby eliminating the problem of large gaps between the arc plates of the traditional tire inner circle support device, which causes the tire to not receive uniform and stable support force when it is in contact, thus aggravating the degree of tire deformation.

[0045] After the arc-shaped expansion plate 504 provides effective and tight support to the inner wall of the tire, the lower electric push rod 16 and the upper electric push rod 17 drive the guide roller 13 to approach the tire through the arc-shaped frame until the ends of the two arc-shaped frames contact each other. At this time, the tire and the outer cover are pressed against the guide roller 13. In order to further improve the pressing accuracy, the midpoint of the guide roller 13 coincides with the midpoint of the width of the tire and the outer cover. At this time, the tire and the outer cover are effectively and gaplessly supported by the arc-shaped expansion plate 504 and further adhered by the guide roller 13. Subsequently, the corresponding motor drives the tire and the outer cover to rotate synchronously through the cooperation of the drive shaft, the limit rod 502, the positioning shaft 503, the plug block 8 and the plug sleeve 700. The pressing roller 15 adheres the tire and the outer cover under the action of the electric push rod 600.

[0046] Example 2: Figure 8 As shown, a run-flat tire for improving high-speed performance includes a tread 1, an inner liner 2, and a sidewall 3. From the outside to the inside, a crown layer 4, a belt layer 5, and a ply layer 6 are arranged between the tread 1 and the inner liner 2. A support rubber 7 for run-flat protection is provided at the sidewall 3 between the ply layer 6 and the inner liner 2.

[0047] The tire section height SH is divided sequentially from the shoulder to the toe into the tread cut-off point, 5mm below the cord reverse wrap end point, and the triangular rubber end point. The lateral distance A from the upper end point of the support rubber 7 to the end point of the belt layer 5 near the shoulder on the same side is 10-20mm, and the vertical distance B from the lower end point of the support rubber 7 to the toe is 15-25mm. The thickness T1 of the support rubber 7 at the tread cut-off point, the thickness T2 of the support rubber 7 5mm below the cord reverse wrap end point, and the thickness T3 of the support rubber 7 at the triangular rubber end point have the relationship T2>T3>T1, and T2-T1≦2mm.

[0048] At the tire section height SH, from the center towards the toe, the tire center thickness F, total shoulder thickness G, total thickness at the tread end point C, total thickness 5mm below the cord wrapping end point D, and total thickness at the triangular rubber end point E are divided sequentially. The relationship is F > G > C > D > E, and FE ≦ 2mm.

[0049] The width of the crown belt layer 4 exceeds the width of the belt layer 5 by more than 6 mm and less than 10 mm.

[0050] The improved run-flat tire with high speed performance, the overall thickness of each area of the tire side 3 is weaker than the tread, the overall thickness gradually thins from the tire center to the toe, in the process of tire high speed experiment, the tire side 3 keeps the performance of flex resistance, effectively avoids the tire side 3 from being damaged in advance due to the temperature rise of the tire, and improves the high speed performance of the run-flat tire.

[0051] The above is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the application or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A tread processing apparatus for a run-flat tire that improves high-speed performance, comprising a base (100) and a top frame (200), the base (100) being fixedly installed at the bottom of the top frame (200), characterized in that, The top of the base (100) is provided with two sliding seats (300), the top of the sliding seat (300) is fixedly installed with a slide rail (401) through a cushion block, the inside of the slide rail (401) is slidably connected with a slide bottom plate (402), and the top of the slide bottom plate (402) is fixedly installed with two arc-shaped tracks (403); The top of the sliding seat (300) is fixedly installed with a support on one side, the top of the cushion block is fixedly installed with an axle seat (501), the inside of the axle seat (501) is movably connected with a rotating shaft through a bearing, one end of the axle seat (501) is provided with a limiting rotating rod (502), one end of the limiting rotating rod (502) is fixedly connected with the rotating shaft, the end, away from the rotating shaft, of the limiting rotating rod (502) is fixedly connected with a positioning shaft (503), and the outer side of the positioning shaft (503) is provided with arc-shaped expansion plates (504) arranged in a circular array with the center of the cross section of the positioning shaft (503) as the center. The outer side of the limiting rotating rod (502) is slidably connected with a sliding sleeve one (901), and the outer side of the sliding sleeve one (901) is fixedly installed with two annular hoops (903) in a sleeved manner, and the annular hoops (903) are slidably connected in the arc-shaped tracks (403) arranged below. The outer side of the positioning shaft (503) is slidably connected with a sliding sleeve two (902), and one end of the sliding sleeve two (902) is fixedly connected with the sliding sleeve one (901), and one end of the positioning shaft (503) is fixedly connected with a bearing block. The outer sides of the sliding sleeve two (902) and the bearing block are fixedly installed with a plurality of groups of supports at equal intervals, and the resisting rods one (10) and the resisting rods two (11) are rotatably connected in the supports of the sliding sleeve two (902) and the bearing block, respectively. The inner wall of the arc-shaped expansion plate (504) is fixedly installed with a plurality of limiting sliding frames (12) corresponding in number to the resisting rods one (10), the end, away from the bearing block, of the resisting rods two (11) is rotatably connected with the inner wall of the arc-shaped expansion plate (504), the end, away from the sliding sleeve two (902), of the resisting rods one (10) is slidably connected in the limiting sliding frame (12), the arc-shaped expansion plate (504) moves outward until the arc-shaped expansion plate (504) abuts against the inner wall of the tire, and at this time, the arc-shaped expansion plates (504) arranged in the two sliding seats (300) abut against each other and fit tightly. The top midpoint of the base (100) and the top inner wall midpoint of the top frame (200) are fixedly installed with a lower electric push rod (16) and an upper electric push rod (17), the output ends of the lower electric push rod (16) and the upper electric push rod (17) are fixedly installed with an arc-shaped frame, and the inside of the arc-shaped frame is movably connected with a plurality of guide rollers (13) through bearings. The arc-shaped frame is fixedly connected with a support frame (14) on both sides of the bottom end of the electric push rod (17), a rotating rod is rotatably connected in the support frame (14), and the bottom end of the rotating rod is provided with a pressing roller (15) through a machine frame, the outer side wall of the support frame (14) is rotatably connected with an electric push rod (600), and the output end of the electric push rod (600) is rotatably connected with the rotating rod.

2. The tread processing apparatus for a run-flat tire improving high speed performance according to claim 1, wherein The outer side of one of the supports is provided with a motor for driving the rotating shaft to rotate, the top of the base (100) is symmetrically provided with a sliding groove one, and the sliding seat (300) is slidably connected in the sliding groove one.

3. A run-flat tire for improving high speed performance, which is manufactured by using the tread processing apparatus for a run-flat tire for improving high speed performance according to any one of claims 1 to 2, characterized in that, The tire comprises a tread (1), an inner liner (2) and a sidewall (3), a crown layer (4), a belt layer (5) and a cord layer (6) are sequentially arranged from outside to inside between the tread (1) and the inner liner (2), and a support rubber (7) for tire puncture protection is arranged at the sidewall (3) between the cord layer (6) and the inner liner (2).

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