Irregular AT tire pattern structure and processing equipment thereof

Abstract

The invention discloses a pattern structure of an irregular AT tire and processing equipment of the pattern structure, which are used for improving a conventional AT tire pattern structure, specifically, a triangular structure a and a triangular structure b are formed on the basis of a plurality of irregular tire crown pattern blocks, the shape and size of the whole tire crown pattern blocks are irregular, but the whole arrangement shape is regular, so that the pattern structure of the irregular AT tire is formed. Irregularly-shaped main grooves c and irregularly-shaped small grooves d are further formed according to the regular arrangement mode of the triangular structures a and the triangular structures b, on this basis, the draft angle of machining and ditching and the included angle f between the N-shaped main grooves are limited, and the overall pattern structure keeps the attractiveness of cross-country patterns; the possibility that the pattern blocks generate a resonance phenomenon due to consistent angles is also avoided, the generation of pattern noise is reduced, and the N-shaped main groove is cut into two sections by the Y-shaped small groove, so that the concentrated generation of noise is avoided, the acting points of the tire during steering are increased, and the gripping performance of the tire is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tires, and in particular to a pattern structure of an irregular AT tire and processing equipment thereof. Background Art

[0002] The difference between AT tires and conventional tires lies in their surface patterns. They are designed for a variety of complex road surfaces and have larger design gaps and deep treads. Please refer to the relevant content in publication number CN108482021A.

[0003] Because the tread width of AT tires is larger, the rolling resistance increases, which in turn increases fuel consumption. AT tires have larger tread blocks and deeper tread grooves, which help improve grip and passability in harsh environments such as mud and sand. However, during highway driving, due to material problems and tread pattern gap problems, more noise and vibration are generated;

[0004] In addition, in pursuit of grip and aesthetics, conventional AT tires have relatively complex patterns, which on the one hand increases the complexity of the pattern processing process, and on the other hand increases noise and vibration. In addition, it will also affect the drainage of the AT tire tread or increase the friction damage between the tread and the ground.

[0005] This application proposes a solution to this problem. Summary of the invention

[0006] The purpose of the present invention is to provide an irregular AT tire pattern structure and a processing device thereof. The special tread design structure of the AT tire will generate more noise and vibration during the specific operation process, and on the other hand, the difference in drainage will affect the service life of the tread.

[0007] The object of the present invention can be achieved by the following technical solutions: a pattern structure of an irregular AT tire, the pattern structure is applied to the outer surface of the AT tire, and the pattern structure is obtained by performing a processing process by a processing device, and the pattern structure includes a shoulder pattern block and a crown pattern block;

[0008] The shoulder pattern blocks are arranged in a trapezoidal shape, which is wider near the middle and narrower near the shoulder. The three crown pattern blocks form a triangular structure a and a triangular structure b. Small grooves d are arranged between the crown pattern blocks in the triangular structure a and the triangular structure b. The small grooves d are arranged in a Y shape. The triangular structure a and the triangular structure b are provided with main grooves c along the lateral direction of the pattern structure. The main grooves c are arranged in an N shape, and the main grooves c are provided with an angle f in the up and down direction. Steel sheets e are provided on the crown pattern blocks constituting the triangular structure a and the triangular structure b, and the shape of the steel sheets e is parallel to the edge shape of the corresponding crown pattern blocks.

[0009] It is further configured as follows: the angle f in the main groove c is different along the up and down directions, and the range of the angle f is 40-50°; the main groove c and the small groove d are provided with a draft angle along the depth direction, and the range of the draft angle is 3-5°.

[0010] The present invention further proposes a processing device for the pattern structure of an irregular AT tire, comprising a machine frame and a processing machine head seat, wherein a working platform is arranged at the lower side of the machine frame, and the processing machine head seat is arranged at the upper end of the machine frame;

[0011] The work platform is provided with a tooling table corresponding to the AT tire, and the body frame is provided with a cooperative component at a position corresponding to the lower side of the processing machine head seat and the upper side of the work platform.

[0012] It is further configured as follows: a central top plate is installed directly above the tooling table, side wing plates are rotatably connected to both sides of the central top plate, and cylinder actuators corresponding to the two side wing plates are installed in the tooling table.

[0013] It is further configured that: the side wing plates are directional-deflected at both sides of the center top plate through the cylinder actuator, and the upper curved surfaces of the side wing plates and the center top plate correspond to the inner curved surface positions of the AT tire.

[0014] It is further configured that: the cooperative assembly includes a pinch roller and a drive motor, the pinch roller is arranged in a mirror-symmetrical manner along a vertical plane at the midpoint of the center top plate, and the pinch roller is rotatably connected to the machine body frame, the drive motor is installed on the machine body frame, and the center point of the drive motor output shaft and the midpoint of the center top plate are on the same vertical axis;

[0015] A belt transmission structure is installed at one end of the pressure roller and on the output shaft of the driving motor, and the pressure roller rotates in the same direction as the driving motor through the belt transmission structure.

[0016] It is further configured as follows: the outer surface of the clamping roller matches the outer curved surface of the AT tire, and a thimble is installed on the outer surface of one of the clamping rollers, and the setting position of the clamping roller corresponds to the setting position of the side wing plate.

[0017] The present invention has the following beneficial effects:

[0018] 1. The overall structure is improved according to the peculiarity of the AT tire pattern structure, specifically the pattern blocks set for the shoulder and crown. The pattern blocks are essentially irregular in shape and size, but the overall arrangement shape is regular, so that the overall pattern structure has both the characteristics of an off-road pattern and is beautiful and generous. The key content is: on the basis of meeting the off-road requirements of AT tires, the irregular pattern blocks can further improve the tire's grip on the road. In addition, on slippery roads, tires with irregular patterns can better drain water, reduce the probability of hydroplaning, and improve driving safety. The shapes of the steel sheets on the three pattern blocks that form a triangle are not consistent. The shape of the steel sheets is generally parallel to the edge shape of the pattern blocks. The steel sheets on the three pattern blocks also form a triangle as a whole, which is very coordinated with the triangle formed by the pattern blocks, ensuring the beauty of the pattern;

[0019] 2. Further explanation of the arrangement of the crown pattern blocks and shoulder pattern blocks: grooves are opened between the shoulder pattern blocks and the crown pattern blocks. The two triangular structures make the lateral main grooves c of the whole pattern block arranged in N-type c, and the small grooves d between the three patterns are arranged in Y-type; the upper and lower angles f between the N-type main grooves are inconsistent, and the angle is required to be between 40 and 50 degrees, which can ensure that the tire has good steering force to both sides when it contacts the ground. The upper and lower angles differ by 3 to 5 degrees to avoid resonance of the pattern blocks due to the consistent angles and reduce the generation of pattern noise; and the Y-type small grooves cut the N-type main grooves into two sections, which not only avoids the concentrated generation of noise, but also increases the force point when the tire turns, ensuring the tire's grip performance while reducing the generation of noise;

[0020] 3. In combination with the above, it is further explained that: the processing equipment is further improved according to the optimized pattern structure. When the processing machine head performs directional grooving according to the main groove c and the small groove d, the center top plate and the side wing plate provide downward support force for the AT tire, and two clamping rollers apply downward pressure to the AT tire. The AT tire is clamped and fixed to maintain the stability of the processing position and ensure the grooving size parameters. The AT tire can also be directional rotated during clamping and fixing to further ensure the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of an irregular AT tire pattern structure proposed by the present invention;

[0023] Figure 2 This is an analytical position diagram of the pattern structure of an irregular AT tire proposed by the present invention;

[0024] Figure 3 A processing position diagram of a processing device for processing an irregular AT tire pattern structure proposed by the present invention;

[0025] Figure 4 A schematic diagram of the structure of a processing device for an irregular AT tire pattern structure proposed by the present invention;

[0026] Figure 5 The present invention provides a processing device for the pattern structure of an irregular AT tire. Figure 4 A partial cutaway view of

[0027] Figure 6 The present invention provides a processing device for the pattern structure of an irregular AT tire. Figure 3 sectional view of .

[0028] In the figure: 1. Machine frame; 2. Pressing roller; 3. Working platform; 4. Side wing plate; 5. Tooling table; 6. Center top plate; 7. Driving motor; 8. Processing machine head seat; 9. Cylinder actuating part. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: In view of the special tread design structure of AT tires, more noise and vibration will be generated during the specific operation process. On the other hand, the difference in drainage will affect the service life of the tread. The following technical solutions are proposed:

[0031] Reference Figure 1 and Figure 2 In this embodiment, an irregular AT tire pattern structure is applied to the outer surface of the AT tire, and the pattern structure is obtained by performing a processing procedure by a processing device, and the pattern structure includes a shoulder pattern block and a crown pattern block;

[0032] The shoulder pattern blocks are arranged in a trapezoidal shape, with a wider side near the middle and a narrower side near the shoulder. The three crown pattern blocks form a triangular structure a and a triangular structure b. Small grooves d are arranged between the crown pattern blocks in the triangular structure a and the triangular structure b. The small grooves d are arranged in a Y shape. The triangular structure a and the triangular structure b are provided with main grooves c along the lateral direction of the pattern structure. The main grooves c are arranged in an N shape, and the main grooves c are provided with an angle f along the up-down direction.

[0033] A steel sheet e is arranged on the crown pattern blocks constituting the triangular structure a and the triangular structure b. The shape of the steel sheet e is parallel to the edge shape of the corresponding crown pattern block. The angle f in the main groove c is different along the up and down directions, and the angle f ranges from 40 to 50 degrees. The main groove c and the small groove d are provided with a draft angle along the depth direction, and the draft angle ranges from 3 to 5 degrees.

[0034] Solution description: Explain the application objects of AT tires. They are mainly suitable for various road conditions, including mud, dirt roads, gravel roads and other unpaved roads, as well as highways. They have good passability and grip on unpaved roads. This can be indirectly understood as follows: the complexity of the pattern is directly related to the grip and drainage of the tire. Tires with regular patterns can provide stronger grip under complex road conditions. For example, tires with block patterns can better embed into the ground under complex road conditions, increase friction, and thus improve grip. On slippery roads, tires with irregular patterns can better drain water, reduce the probability of hydroplaning, and improve driving safety.

[0035] For example, tires with longitudinal patterns as the main feature have good drainage and can effectively reduce the probability of hydroplaning. Tires with irregular patterns can provide better handling and stability when driving at high speeds. For example, tires with asymmetric patterns have good lateral stability when turning at high speeds and are suitable for sports vehicles. Tires with different patterns generate different noises during rolling. Generally speaking, the more complex the pattern and the smaller and more numerous the pattern blocks, the greater the rolling noise may be; while tires with relatively simple patterns and larger pattern blocks have relatively less rolling noise. In this regard, the pattern structure proposed in this embodiment is basically similar to the conventional pattern structure.

[0036] But the difference is: the shoulder pattern blocks are not explained, the key lies in the crown pattern blocks. Each crown pattern block is essentially irregular in shape and size, such as Figure 1 As shown, every three crown blocks are regularly arranged in a triangular distribution, thus forming two structures: triangular structure a and triangular structure b. This has both the characteristics of an off-road pattern and is beautiful. The shapes of the steel sheets e on the three blocks forming the triangle are not consistent. The shape of the steel sheets is parallel to the edge shape of the block where they are located. The steel sheets on the three blocks also form a triangle as a whole. It is very coordinated with the triangle formed by the blocks, ensuring the beauty of the pattern.

[0037] In addition, the grooves between each crown pattern block are described, such as Figure 2 As shown, first, there are small grooves d between the crown pattern blocks in the triangular structure a and the triangular structure b, and main grooves c are opened between the triangular structure a and the triangular structure b. In addition, the triangular structure a and the triangular structure b make the lateral main grooves c of the whole pattern block arranged in N shape, and the small grooves d between the three patterns are arranged in Y shape. The upper and lower angles f between the N-type main grooves c are inconsistent, and the angle is required to be between 40 and 50 degrees, which can ensure that the tire has good steering force to both sides when in contact with the ground. The upper and lower angles differ by 3 to 5 degrees to avoid resonance of the pattern blocks due to the consistent angles and reduce the generation of pattern noise.

[0038] The Y-shaped small groove d cuts the N-shaped main groove into two sections, which not only avoids the concentrated generation of noise, but also increases the traction point of the tire when turning, ensuring the tire's grip performance while reducing noise. In addition, as shown above, although the overall AT tire pattern structure is relatively complex, the arrangement is relatively regular. The purpose is to ensure that the main groove c and the small groove d complete the drainage process together to avoid hydroplaning due to poor drainage.

[0039] Embodiment 2: In combination with the relevant contents in Embodiment 1, the processing process of the pattern structure is supplemented as follows:

[0040] Reference Figures 3 to 6 In this embodiment, a processing device for an irregular AT tire pattern structure includes a machine frame 1 and a processing machine head seat 8. A working platform 3 is arranged at the lower side of the machine frame 1, and the processing machine head seat 8 is arranged at the upper end of the machine frame 1;

[0041] A tooling table 5 corresponding to the AT tire is arranged on the working platform 3, and a cooperative assembly is arranged at a position corresponding to the lower side of the processing machine head seat 8 and the upper side of the working platform 3 of the machine body frame 1. A central top plate 6 is installed directly above the tooling table 5, and side wing plates 4 are rotatably connected at positions on both sides of the central top plate 6. Cylinder actuating parts 9 corresponding to the two side wing plates 4 are installed in the tooling table 5. The side wing plates 4 perform directional deflection actions at positions on both sides of the central top plate 6 through the cylinder actuating parts 9, and the upper curved surfaces of the side wing plates 4 and the central top plate 6 correspond to the inner curved surface positions of the AT tire;

[0042] The cooperative assembly includes a pinch roller 2 and a drive motor 7. The pinch roller 2 is arranged in a mirror-symmetrical manner along the vertical plane at the midpoint of the center top plate 6, and the pinch roller 2 is rotatably connected to the machine frame 1. The drive motor 7 is installed on the machine frame 1, and the center point of the output shaft of the drive motor 7 and the midpoint of the center top plate 6 are on the same vertical axis.

[0043] A belt transmission structure is installed on one end of the pressure roller 2 and on the output shaft of the driving motor 7, and the pressure roller 2 rotates in the same direction as the driving motor 7 through the belt transmission structure. The outer surface of the pressure roller 2 matches the outer curved surface of the AT tire, and a pin is installed on the outer surface of one of the pressure rollers 2. The setting position of the pressure roller 2 corresponds to the setting position of the side wing plate 4.

[0044] Solution description: For AT tires, the sidewall thickness is relatively large, and the essence of the pattern structure is obtained through the main groove c and the small groove d, so this embodiment adopts an automated processing method, specifically based on the processing headstock 8, and a tool of corresponding diameter is installed on it, and the tool diameter is equal to the groove width of the main groove c and the small groove d, and the processing headstock 8 is ensured to be directional and rotated with the automated production method, and as shown in the first embodiment, it is necessary to maintain the range of the angle f of 40 to 50° and the range of the draft angle of 3 to 5°, and the operation process of the processing headstock 8 is not described in detail in the present invention;

[0045] It should be noted that although the AT tire sidewall is thicker, when the tool is used to make grooves, because the AT tire itself is made of relatively hard plastic material, local deformation may occur and affect the processing quality. Figure 3 and Figure 6 Provide combined instructions;

[0046] S1: The central top plate 6 is used to place the AT tire. In the initial state, the two side wing plates 4 are folded in a reverse rotation manner, so that the AT tire can be directly placed on the central top plate 6. The two side wing plates 4 are driven to unfold by the air pump actuator 9, so that the entire AT tire can be supported from below. The working platform 3 and the tooling table 5 are briefly described. The working platform 3 has both horizontal and vertical movement capabilities, and the tooling table 5 is mainly used to drive the central top plate 6 and the air pump actuator 9 to move up and down, and its purpose is to ensure that the supported AT tire moves to the position corresponding to the processing machine head seat 8;

[0047] S2: Supplementary explanation in combination with S1, when the AT tire continues to move upward, until the two clamping rollers 2 cooperate with the side wing plates 4 to complete the clamping and fixing process of the AT tire, the grooving action performed by the processing machine head 8 is mainly maintained in the middle area of ​​the AT tire corresponding to the two clamping rollers 2, and the lower side position of the middle area always receives the lower support action from the center top plate 6 and the side wing plates 4, the purpose of which is to avoid affecting the processing accuracy due to the local plastic deformation of the AT tire during the grooving action;

[0048] It should also be noted that: the clamping area range of the AT tire by the two clamping rollers 2 is explained. After the grooving action in the middle area is completed, when the AT tire maintains the clamping and fixed state, the clamping force of the clamping roller 2, the center top plate 6 and the side wing plate 4 can be appropriately reduced, and the two clamping rollers 2 are driven by the driving motor 7 to rotate slightly in the same direction, mainly for replacing the middle area in the grooving action. It is further noted that: one of the clamping rollers 2 is provided with a pin, such as Figure 6 The pressing roller 2 at the middle right position is provided with a thimble, so in the middle area during the ditching operation, the rotation direction of the AT tire is clockwise.

[0049] In summary: the conventional AT tire pattern structure is improved, specifically, a triangular structure a and a triangular structure b are formed based on a plurality of irregular crown pattern blocks. The shape and size of the entire crown pattern block are irregular, but the overall arrangement shape is regular, and irregular main grooves c and small grooves d are further formed according to the regular arrangement of the triangular structure a and the triangular structure b, and on this basis, the draft angle of the processing groove and the angle f between the N-type main grooves are limited. The overall pattern structure retains the aesthetics of the off-road pattern, and also avoids the possibility of resonance due to the consistent angle of the pattern blocks, reducing the generation of pattern noise, and the Y-type small groove cuts the N-type main groove into two sections, which not only avoids the concentrated generation of noise but also increases the force point when the tire turns, thereby ensuring the tire's grip performance.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An irregular AT tire pattern structure, characterized in that: The pattern structure is applied to the outer surface of the AT tire, and the pattern structure is obtained by performing a processing process by a processing device, and the pattern structure includes a shoulder pattern block and a crown pattern block; The shoulder pattern blocks are arranged in a trapezoidal shape, with a wider side near the middle and a narrower side near the shoulder. The three crown pattern blocks form a triangular structure a and a triangular structure b. Small grooves d are arranged between the crown pattern blocks in the triangular structure a and the triangular structure b. The small grooves d are arranged in a Y shape. The triangular structure a and the triangular structure b are provided with main grooves c along the lateral direction of the pattern structure. The main grooves c are arranged in an N shape, and the main grooves c are provided with an angle f along the vertical direction. The crown pattern blocks constituting the triangular structure a and the triangular structure b are provided with steel sheets e, and the shape of the steel sheets e is parallel to the edge shape of the corresponding crown pattern blocks.

2. The irregular AT tire pattern structure according to claim 1, characterized in that: The angle f in the main groove c is different along the up and down directions, and the range of the angle f is 40-50°. The main groove c and the small groove d are provided with a draft angle along the depth direction, and the range of the draft angle is 3-5°.

3. A processing device for an irregular AT tire pattern structure, used in the processing step of an irregular AT tire pattern structure as claimed in claim 2, characterized in that: It comprises a machine frame (1) and a processing machine head seat (8), wherein a working platform (3) is arranged at the lower side of the machine frame (1), and the processing machine head seat (8) is arranged at the upper end of the machine frame (1); The working platform (3) is provided with a tooling table (5) corresponding to the AT tire, and the machine body frame (1) is provided with a cooperating component at a position corresponding to the lower side of the processing machine head seat (8) and the upper side of the working platform (3).

4. The processing equipment for the irregular AT tire pattern structure according to claim 3, characterized in that: A central top plate (6) is installed directly above the tooling table (5), and side wing plates (4) are rotatably connected to both sides of the central top plate (6). Cylinder actuating parts (9) corresponding to the two side wing plates (4) are installed in the tooling table (5).

5. The processing equipment for the irregular AT tire pattern structure according to claim 4, characterized in that: The side wing plates (4) are directional-deflected at both sides of the center top plate (6) through a cylinder actuator (9), and the upper curved surfaces of the side wing plates (4) and the center top plate (6) correspond to the inner curved surface positions of the AT tire.

6. The processing equipment for irregular AT tire pattern structure according to claim 4, characterized in that: The cooperative component comprises a pressure roller (2) and a drive motor (7), wherein the pressure roller (2) is arranged in a mirror-symmetrical manner along a vertical plane at the midpoint of the center top plate (6), and the pressure roller (2) is rotatably connected to the machine frame (1), and the drive motor (7) is mounted on the machine frame (1), and the center point of the output shaft of the drive motor (7) and the midpoint of the center top plate (6) are on the same vertical axis; A belt transmission structure is installed at one end of the pressure roller (2) and on the output shaft of the driving motor (7), and the pressure roller (2) rotates in the same direction as the driving motor (7) through the belt transmission structure.

7. The processing equipment for irregular AT tire pattern structure according to claim 6, characterized in that: The outer surface of the clamping roller (2) matches the outer curved surface of the AT tire, and a thimble is installed on the outer surface of one of the clamping rollers (2). The setting position of the clamping roller (2) corresponds to the setting position of the side wing plate (4).

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