A tire mold

Abstract

This application discloses a tire mold, belonging to the field of tire mold technology. The tire mold includes: a base and a tread pattern shell. The base is provided with multiple positioning elements; the tread pattern shell is provided with a positioning groove, and the tread pattern shell is installed on the positioning elements. A flow guiding gap is formed between the tread pattern shell, the positioning elements, and the base. The flow guiding gap includes a first gap. The top surface of the positioning element abuts against the bottom wall of the positioning groove, and a first gap is formed between the tread pattern shell and the mounting surface. The base is provided with a first exhaust channel, and the positioning elements are provided with a second exhaust channel. The first exhaust channel and the second exhaust channel are connected, and the flow guiding gap is connected to the second exhaust channel. The tread pattern shell includes an arc-shaped transition section, which extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction, and the value range of α is: 0°≤α≤60°. This solves the technical problems of inconvenient tread pattern replacement and easy clogging of the exhaust structure in existing tire molds.

Description

Technical Field

[0001] This application belongs to the field of tire mold technology, and specifically relates to a tire mold. Background Technology

[0002] Currently, in mainstream tire mold structures, the tread pattern and tread blocks of movable molds, as well as the tread pattern and mold body of two-part molds, are all integrally formed. When production needs change and tire tread patterns need to be adjusted, the industry typically uses three modification methods, but all of them have significant technical defects. Among them, replacing the entire tread block is costly and has a long processing cycle; the modification method of welding and milling the original tread pattern is limited by the original tread pattern forming structure, making processing difficult, and the amount of mold deformation is difficult to control precisely. Moreover, the welding process is prone to causing color differences on the mold surface, ultimately leading to color difference defects on the surface of the vulcanized tire; while the modification scheme of replacing the tread pattern with an insert requires slotting on the mold cavity surface to insert and install the independently processed tread pattern block. This is greatly limited by the initial slot size and shape, and has high requirements for parameters such as the surface roughness of the slot and the tread pattern block.

[0003] Meanwhile, in existing tire molds, conventional venting technology mainly involves creating several venting channels on the tread facing the tire. This allows air between the tire and the mold cavity to escape to the outside through the venting channels and through holes in the mold body. After the tire is vulcanized, corresponding rubber pillars form on the tread, which need to be removed manually or by automated equipment, increasing production steps and processing costs. Currently, the industry's non-porous technology is based on an improvement on the insert-type rib structure. It involves processing tiny venting gaps on the surface of the cavity and using the gap between the venting gaps and the bottom of the rib block to form an venting path. However, the venting gaps in this structure are parallel to the venting direction and are completely exposed on the cavity surface. They are in long-term contact with the tire rubber and production media, making them prone to blockage and causing a continuous decline in venting stability. At the same time, the inserts use a high-precision, tightly fitted structure. After the rubber is squeezed into the fitting gap, the inserts become difficult to disassemble and maintain. Even after disassembly and cleaning, the residue from previous extrusions and the deformation caused by compression can easily lead to enlargement and uneven size of the venting gaps. During subsequent vulcanization production, this can result in varying degrees of burr defects on the tire surface. In summary, existing tire molds generally suffer from technical problems such as inconvenience in modifying and replacing tread patterns, easy blockage of exhaust structures, and high maintenance difficulty. Summary of the Invention

[0004] This application provides a tire mold to solve the technical problems of inconvenient tread pattern replacement and easy clogging of the exhaust structure in existing tire molds.

[0005] The technical solution adopted in this application is as follows: A tire mold, comprising: The base has multiple positioning elements and a mounting surface. The positioning elements are protruding structures set on the mounting surface. The tread pattern housing has a positioning groove that mates with the positioning element. The tread pattern housing is used to abut against the tire carcass so that the tire carcass tread forms a tread groove. The tread pattern housing is installed on the positioning element, and a flow guiding gap is formed between the tread pattern housing, the positioning element, and the base. The flow guiding gap includes a first gap. The top surface of the positioning element abuts against the bottom wall of the positioning groove, and a first gap is formed between the tread pattern housing and the mounting surface. The base is provided with a first exhaust channel, the positioning component is provided with a second exhaust channel, the first exhaust channel is connected to the second exhaust channel, the guide gap is connected to the gas in the second exhaust channel, and the gas between the tire carcass and the base is discharged from the base through the guide gap, the second exhaust channel and the first exhaust channel. The patterned outer shell includes an arc-shaped transition section located at the entrance of the first gap. The arc-shaped convex surface of the arc-shaped transition section protrudes towards the first gap. The arc-shaped transition section extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction. The value range of α is: 0°≤α≤60°.

[0006] The tire mold of this application also includes the following additional technical features: The flow guide gap also includes a first gap formed by the patterned outer shell and the mounting surface, and a second gap formed by the outer contour of the positioning element and the positioning groove. The first gap and the second gap are connected.

[0007] The base is provided with a mounting groove for accommodating the tire body. The bottom surface of the mounting groove is the mounting surface. The base also includes a side surface that connects to the mounting surface. The guide gap also includes a third gap formed by the outer contour of the positioning element and the side surface. The third gap is connected to the first gap and the second gap.

[0008] The tire mold also includes a locking component. The base has an assembly hole that mates with the locking component. The assembly hole extends through the base and the positioning component. The assembly hole has an assembly opening at the top of the positioning component. The tread shell has a locking hole that mates with the locking component. The first exhaust channel is a channel located in the assembly hole of the base.

[0009] The second exhaust channel is a channel located in the assembly hole of the positioning component. The top surface of the positioning component is provided with a guide groove that connects to the assembly port. The guide groove has a guide opening that exposes the outer contour of the positioning component. The second gap is connected to the second exhaust channel.

[0010] The tire mold also includes a third venting channel. The second venting channel is a channel located in the assembly hole of the positioning member. The third venting channel includes outlets located on opposite sides of the positioning member. The outlets extend toward the channel of the assembly hole and are in gas communication with the assembly hole. The outlets are in communication with the second gap.

[0011] The positioning element extends along a preset direction, and there are multiple assembly holes, which are arranged at intervals along the preset direction.

[0012] The positioning component has an assembly section between two adjacent assembly holes, which is used for positioning with the positioning groove.

[0013] The top of the assembly section and the bottom wall of the positioning groove are provided with a positioning boss, and the other part is provided with a positioning groove that cooperates with the positioning boss.

[0014] The mounting surface or patterned outer shell is provided with a material storage tank. Along the airflow direction, the material storage tank is located downstream of the inlet of the first gap and is connected to the first gap.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application allows the tread pattern outer shell to be detachably mounted on the positioning component of the base. When producing tires with different tread patterns, only the corresponding tread pattern outer shell needs to be replaced to complete the mold changeover, without the need to replace the entire base and positioning structure. This allows for flexible adaptation to diverse tread groove processing requirements, effectively reducing mold development costs and shortening product changeover cycles. During vulcanization, only the front of the tread pattern outer shell directly contacts the tire carcass rubber to form the tread groove. The guide gap is formed in the connection area between the back of the tread pattern outer shell and the positioning component and base. The first exhaust channel inside the base and the second exhaust channel inside the positioning component are interconnected and form a complete exhaust path with the guide gap. All exhaust structures are hidden within the tread pattern. On the back of the outer shell, the tread pattern physically isolates the rubber material, significantly reducing the likelihood of rubber material entering the guide gap and exhaust channel, causing blockage. This ensures long-term unobstructed exhaust passages, preventing molding defects such as tread bubbles and insufficient rubber, and consistently guaranteeing the quality of tire vulcanization. This application provides an arc-shaped transition section at the entrance of the first gap, with a convex surface protruding towards the first gap. This arc-shaped transition section extends from its starting point towards the positioning groove, and the angle α between the tangent at the starting point and the preset direction is limited to 0°≤α≤60°. This prevents abrupt changes in the profile at the entrance of the first gap, allowing gas to flow more smoothly into the first gap and improving its air guiding capacity. Furthermore, at the entrance of the first gap, an angle α is provided between the tangent at the starting point of the arc-shaped transition section and the preset direction, with α ranging from 0°≤α≤60°. When the angle α is within this range, the arc-shaped transition section creates a gradually opening structure at the entrance of the first gap. When gas flows along the mounting surface to the inlet of the first gap, its flow direction gradually transitions towards the first gap, thereby improving the efficiency of gas entering the first gap. When α is at its lower limit of 0°, the airflow at the inlet is constrained by the arc-shaped transition section before being guided and diffused, improving the stability of the airflow entering the first gap. When α is at its upper limit of 60°, the opening amplitude of the arc-shaped transition section reaches the optimal critical value. After the gas enters the first gap, it diffuses in an orderly manner through the guidance of the arc-shaped transition section, greatly improving the exhaust rate. If the included angle exceeds 60°, the inclination of the arc-shaped transition section is too large, which will not only cause the edge wall thickness of the patterned shell to become drastically thinner, reducing the structural strength and making it prone to deformation and damage, but will also cause the opening of the first gap inlet to expand too much. The rubber material is easily squeezed into the guide gap, blocking the exhaust channel and reducing the exhaust effect.

[0016] 2. In a preferred embodiment of this application, by setting the guide gap as a first gap formed between the tread pattern shell and the mounting surface, and a second gap formed between the outer contour of the positioning member and the positioning groove, and making the first gap and the second gap connected, the guide channels can be arranged at the mating positions of the tread pattern shell and the mounting surface, and the mating positions of the positioning member and the positioning groove, respectively. This allows the first gap and the second gap to be generated simultaneously after the tread pattern shell is installed on the positioning member. Simultaneously, the mating of the positioning member and the positioning groove provides positioning and guidance for the tread pattern shell, facilitating rapid alignment and installation to the predetermined position during installation, and providing a clear guiding path during disassembly, thereby improving the ease of installation and disassembly of the tread pattern shell. When the tire carcass squeezes the tread pattern shell, the colloid undergoes extensive deformation under the extensive force. Since the first gap is located between the tread pattern shell and the mounting surface, and the second gap is located between the outer contour of the positioning member and the positioning groove, both located at the mating interface, the main force-induced extension direction of the colloid is unlikely to be towards the positions of the first gap and the second gap. Therefore, the colloid is difficult to enter the first gap and the second gap. Based on this, the first and second gaps remain open during tire body pressing and form a continuous exhaust channel through mutual connection, allowing gas to flow smoothly and be discharged along the first and second gaps. Thus, while utilizing the positioning element and positioning groove to achieve rapid positioning and installation of the tread shell, it also reduces the probability of the adhesive clogging the first and second gaps, improves the unobstructed flow channels and exhaust stability, thereby reducing gas retention and improving the bonding quality between the tire body and the tread shell.

[0017] 3. In a preferred embodiment of this application, by forming a third gap between the outer contour and side surface of the tread shell, and connecting the third gap with the first and second gaps, the flow path can be extended from the mounting surface to the side area of ​​the mounting groove. The mounting groove is used to accommodate the tire carcass, which has an arc-shaped structure. When the tire carcass is installed in the mounting groove, its central area corresponds to the mounting surface, while the portion of the tire carcass near the side surface has an arc-shaped transition. When the tire carcass is pressed against the tread shell, its deformation is mainly directed towards the mounting surface and the tread shell. Since a large-area compression contact is not easily formed between the arc-shaped contour of the tire carcass and the side surface, the tire carcass is difficult to extend into the third gap formed between the tread shell and the side surface. Based on this, the third gap can remain open during the tire carcass pressing process and form a connected exhaust path with the first gap, allowing gas to flow not only along the mounting surface but also along the side area of ​​the mounting groove, thereby improving the continuity of the exhaust path, increasing gas exhaust efficiency, and improving the bonding quality between the tire carcass and the tread shell.

[0018] 4. In a preferred embodiment of this application, a locking member is provided. The base has an assembly hole that mates with the locking member, and the tread pattern shell has a locking hole that mates with the locking member. The locking member passes through the assembly opening at the top of the positioning member and mates with the locking hole, thereby fixing the tread pattern shell to the base. Because the locking member provides a locking constraint on the tread pattern shell, it restricts the movement of the tread pattern shell relative to the base, improving the stability of the tread pattern shell after installation, thus helping to ensure that the tread pattern shell is in a stable working state. The assembly hole in the base forms a first exhaust channel. When the tire carcass compresses the tread pattern shell, the gas between the tread pattern shell and the tire carcass can enter the first exhaust channel and be discharged outwards. Since the first exhaust channel is formed using the existing assembly hole, there is no need to set up an additional independent exhaust structure to increase the exhaust path, allowing the assembly hole to simultaneously perform the functions of locking member installation and gas discharge, improving structural integration.

[0019] 5. In a preferred embodiment of this application, by setting the assembly hole channel located in the positioning member as a second exhaust channel, and providing a guide groove connecting the assembly port on the top surface of the positioning member, and making the guide groove have a guide opening that exposes the outer contour of the positioning member, the second gap, the guide groove, and the second exhaust channel can form a connected exhaust path. The second gap is formed between the outer contour of the positioning member and the positioning groove. When gas flows to the second gap, it enters the guide groove through the guide opening and then enters the second exhaust channel through the assembly port, thereby guiding the gas from the outer periphery of the positioning member to the interior of the assembly hole. Since the guide groove is located on the top surface of the positioning member, and the guide opening exposes the outer contour of the positioning member, the guide groove can collect the gas from the area surrounding the positioning member to the assembly port, forming a clear guiding connection between the second gap and the second exhaust channel, preventing gas from stagnating in the area surrounding the positioning member. Furthermore, the second exhaust channel is formed using the channel of the assembly hole itself, satisfying the assembly requirements of the locking member while also having an exhaust function, allowing the assembly hole to simultaneously serve as both a locking member installation channel and a gas exhaust channel, improving structural utilization. Based on this, the gas can flow continuously and be discharged along the second gap, the guide groove and the second exhaust channel, thereby expanding the exhaust path and improving the connectivity and exhaust efficiency between the exhaust channels.

[0020] 6. In a preferred embodiment of this application, by setting the assembly hole channel located in the positioning member as a second exhaust channel, and providing inlet ports on opposite sides of the positioning member, the inlet ports extend toward the assembly hole channel and communicate with the gas in the assembly hole, while also communicating with the second gap, a gas guiding path can be established between the second gap and the second exhaust channel. When gas flows to the second gap formed between the outer contour of the positioning member and the positioning groove, it can enter the second exhaust channel through the inlet ports and be discharged along the assembly hole channel, thereby realizing gas communication between the second gap and the second exhaust channel. Since the inlet ports are located on opposite sides of the positioning member, the gas in the areas on both sides of the positioning member can be guided respectively, so that the gas in different positions in the second gap can converge toward the assembly hole, increasing the communication range between the second gap and the second exhaust channel. Furthermore, the inlet ports extend toward the assembly hole channel, so that the gas can directly enter the second exhaust channel after entering the inlet ports from the second gap, shortening the gas flow path and reducing the gas flow resistance. Based on this, the gas in the second gap can converge toward the assembly hole and be discharged more quickly, improving the efficiency of gas extraction. Meanwhile, by forming multiple drainage ports on both sides of the positioning component that communicate with the second gap, even if the gas guiding capacity of a local area of ​​the second gap is affected, the gas can still enter the second exhaust channel through the drainage port on the other side, thereby improving the coverage of the exhaust path and the stability of the exhaust process.

[0021] 7. In a preferred embodiment of this application, by providing multiple mounting holes and arranging them sequentially at intervals along a preset direction of the positioning member, the mounting holes can be distributed at different positions along the length of the positioning member. When the patterned outer shell is installed on the base, the multiple mounting holes can respectively cooperate with the corresponding locking members to form multi-point locking of the patterned outer shell. This disperses the force on the patterned outer shell to multiple locking positions, reduces the force concentration at a single locking position, improves the stability of the patterned outer shell after installation, and thus helps maintain the positional accuracy of the patterned outer shell during use.

[0022] Furthermore, multiple assembly holes are spaced apart along a preset direction, and assembly sections are provided between adjacent assembly holes, so that the positioning effect is distributed to multiple positions along the extension direction of the positioning component. The positioning support is formed by multiple assembly sections, thereby improving the stability of the fit between the positioning component and the positioning groove, enhancing the positional constraint capability during the installation of the patterned shell, and helping to improve the consistency and accuracy of the installation position of the patterned shell. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1This is a schematic diagram of the structure of a tire mold according to a preferred embodiment of this application; Figure 2 This is a schematic diagram of the installation of the positioning member and the patterned outer shell according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of the third exhaust channel according to a preferred embodiment of this application; Figure 4 This is a schematic diagram of the assembly of the patterned outer shell and the substrate according to a preferred embodiment of this application; Figure 5 This is a schematic diagram of the installation of the assembly section according to a preferred embodiment of this application; Figure 6 This is a schematic diagram of the positioning component according to a preferred embodiment of this application; Figure 7 This is a schematic diagram of the structure of the storage tank according to a preferred embodiment of this application; Figure 8 This is a schematic diagram of the arc-shaped transition section according to a preferred embodiment of this application.

[0024] List of components and reference numerals: 1. Base; 11. Positioning component; 111. Flow guide channel; 112. Assembly section; 113. Positioning boss; 12. Mounting surface; 13. Mounting groove; 14. Side; 15. Assembly hole; 16. Assembly opening; 17. Material storage tank; 2. Patterned outer shell; 21. Positioning groove; 22. Locking hole; 23. Arc-shaped transition section; 24. Positioning recess; 3. Guide gap; 31. First gap; 32. Second gap; 33. Third gap; 4. First exhaust passage; 5. Second exhaust channel; 6. Locking components; 7. Third exhaust channel. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0027] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 8 As shown, this application discloses a tire mold, comprising: The base 1 is provided with a plurality of positioning elements 11 and a mounting surface 12. The positioning elements 11 are protruding structures provided on the mounting surface 12. Patterned outer shell 2, patterned outer shell 2 is provided with positioning groove 21 that cooperates with positioning member 11. Patterned outer shell 2 is used to abut against tire carcass so that the tread of tire carcass forms patterned grooves. Patterned outer shell 2 is installed on positioning member 11. A flow guiding gap 3 is formed between patterned outer shell 2, positioning member 11 and base 1. The flow guiding gap 3 includes a first gap 31. The top surface of positioning member 11 abuts against the bottom wall of positioning groove 21. A first gap 31 is formed between patterned outer shell 2 and mounting surface 12. The base 1 is provided with a first exhaust channel 4, the positioning member 11 is provided with a second exhaust channel 5, the first exhaust channel 4 is connected to the second exhaust channel 5, the guide gap 3 is connected to the second exhaust channel 5, and the gas between the tire carcass and the base 1 is discharged from the base 1 through the guide gap 3, the second exhaust channel 5 and the first exhaust channel 4. The patterned outer shell 2 includes an arc-shaped transition section 23 disposed at the entrance of the first gap 31. The arc-shaped convex surface of the arc-shaped transition section 23 protrudes towards the first gap 31. The arc-shaped transition section 23 extends from the starting position to the side where the positioning groove 21 is located. The tangent of the arc-shaped transition section 23 at the starting position has an angle α with the preset direction. The value range of α is: 0°≤α≤60°. This application allows the tread shell 2 to be detachably mounted on the positioning component 11 of the base 1. When producing tires with different tread patterns, only the corresponding tread shell 2 needs to be replaced to complete the mold change, without the need to replace the entire base 1 and positioning structure. This allows for flexible adaptation to diverse tread groove processing needs, effectively reducing mold development costs and shortening product changeover cycles. During vulcanization, only the front of the tread shell 2 directly contacts the tire carcass rubber to form the tread grooves. The guide gap 3 is formed in the connection area between the back of the tread shell 2 and the positioning component 11 and the base 1. The first exhaust channel 4 inside the base 1 and the second exhaust channel 5 inside the positioning component 11 are interconnected and together with the guide gap 3 to form a complete exhaust passage. All exhaust structures are hidden within the tread shell 2. On the back, the treaded outer shell 2 forms a physical barrier against the rubber material, significantly reducing the possibility of rubber material entering the guide gap 3 and the exhaust channel and causing blockage. This ensures long-term unobstructed exhaust passage, avoids molding defects such as tread bubbles and insufficient rubber, and stably guarantees the quality of tire vulcanization molding. This application provides an arc-shaped transition section 23 with an arc-shaped convex surface protruding towards the first gap 31 at the entrance. The arc-shaped transition section 23 extends from its starting position towards the positioning groove 21, and the angle α between the tangent at the starting position and the preset direction is limited to 0°≤α≤60°. This prevents abrupt changes in the contour at the entrance of the first gap 31, allowing gas to flow more smoothly into the first gap 31 along the mounting surface 12, thus improving the air guiding capacity of the first gap 31. Furthermore, at the entrance of the first gap 31, the tangent at the starting position of the arc-shaped transition section 23 is provided with an angle α between it and the preset direction, and the value of α is in the range of 0°≤α≤60°. When the included angle α is within this range, the arc-shaped transition section 23 makes the inlet of the first gap 31 have an involute structure. When the gas flows along the mounting surface 12 to the inlet of the first gap 31, its flow direction can gradually transition to the first gap 31, thereby improving the efficiency of gas entering the first gap 31. When α is at its lower limit of 0°, the tangent at the starting point of the arc transition section 23 is parallel to the preset direction. The airflow at the inlet is constrained by the arc transition section 23 and then guided and diffused, improving the stability of the airflow entering the first gap 31. When α is at its upper limit of 60°, the opening amplitude of the arc transition section 23 reaches the optimal critical value. After the gas enters the first gap 31, it diffuses in an orderly manner through the guidance of the arc transition section 23, greatly improving the exhaust rate. If the included angle exceeds 60°, the inclination of the arc transition section 23 is too large. This will not only cause the edge wall thickness of the patterned shell 2 to become thinner sharply, reducing the structural strength and making it prone to deformation and damage, but it will also cause the inlet opening of the first gap 31 to expand too much. The rubber material is easily squeezed into the guide gap 3, blocking the exhaust channel and reducing the exhaust effect.

[0031] Those skilled in the art will clearly understand that the preset direction is Figure 8 The middle is in the horizontal direction. The positioning element 11 can be set in a way that the positioning element 11 is integrally formed with the base 1, or the positioning element 11 is detachably connected to the base 1.

[0032] As one of the preferred embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 As shown, the flow guide gap 3 also includes a second gap 32 formed by the outer contour of the positioning member 11 and the positioning groove 21, and the first gap 31 and the second gap 32 are connected.

[0033] Those skilled in the art will understand that the second gap 32 can be formed as a fitting gap between the positioning groove 21 and the positioning member 11, or the side wall of the positioning member 11 is provided with a plurality of protrusions evenly arranged, which abut against the positioning groove 21 to form a second gap 32 between the outer contour of the positioning member 11 and the positioning groove 21.

[0034] By setting the flow guide gap 3 as the first gap 31 formed between the patterned outer shell 2 and the mounting surface 12, and the second gap 32 formed between the outer contour of the positioning member 11 and the positioning groove 21, and making the first gap 31 and the second gap 32 connected, the flow guide channels can be arranged at the mating positions of the patterned outer shell 2 and the mounting surface 12, and at the mating positions of the positioning member 11 and the positioning groove 21, so that after the patterned outer shell 2 is installed on the positioning member 11, the first gap 31 and the second gap 32 are generated simultaneously. At the same time, through the cooperation of the positioning member 11 and the positioning groove 21, the patterned outer shell 2 can be positioned and guided, facilitating the quick alignment and installation of the patterned outer shell 2 to the predetermined position during installation, and providing a clear guiding path for the patterned outer shell 2 during disassembly, thereby improving the convenience of installation and disassembly of the patterned outer shell 2. When the tire carcass presses against the tread shell 2, the colloid undergoes extensive deformation under the compressive force. Since the first gap 31 is located between the tread shell 2 and the mounting surface 12, and the second gap 32 is located between the outer contour of the positioning member 11 and the positioning groove 21, both located at the mating interface, the main force-induced extensibility of the colloid is unlikely to be directed towards the locations of the first gap 31 and the second gap 32. Therefore, the colloid is difficult to enter the first gap 31 and the second gap 32. Based on this, the first gap 31 and the second gap 32 can remain in a conductive state during the tire carcass pressing process, and form a continuous exhaust channel through mutual communication, allowing gas to flow smoothly along the first gap 31 and the second gap 32 and be discharged. Thus, while using the positioning member 11 and the positioning groove 21 to achieve rapid positioning and installation of the tread shell 2, it can also reduce the probability of the colloid clogging the first gap 31 and the second gap 32, improve the unobstructed flow channel and exhaust stability, thereby helping to reduce gas retention and improve the bonding quality between the tire carcass and the tread shell 2.

[0035] As a preferred embodiment of the implementation method, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the base 1 has a mounting groove 13 for accommodating the tire body, and the bottom surface of the mounting groove 13 is a mounting surface 12. The base 1 also includes a side surface 14 connecting the mounting surface 12. The guide gap 3 also includes a third gap 33 formed by the outer contour of the tread shell 2 and the side surface 14. The third gap 33 communicates with the first gap 31 and the second gap 32. One end of the positioning member 11 is connected to the side surface 14 of the base 1, and the other end extends along a preset direction. The tread shell 2 covers the positioning member 11, and the end near the base 1 forms a third gap 33 with the side surface 14 of the base 1.

[0036] By forming a third gap 33 between the outer contour of the tread shell 2 and the side surface 14, and connecting the third gap 33 with the first gap 31 and the second gap 32, the flow path can be extended from the mounting surface 12 to the side area of ​​the mounting groove 13. The mounting groove 13 is used to accommodate the tire carcass, which has an arc-shaped structure. When the tire carcass is installed in the mounting groove 13, its central area corresponds to the mounting surface 12, while the part of the tire carcass near the side surface 14 has an arc-shaped transition. When the tire carcass is pressed against the tread shell 2, its deformation is mainly directed towards the mounting surface 12 and the tread shell 2. Since it is difficult to form a large area of ​​compression contact between the arc-shaped contour of the tire carcass and the side surface 14, the tire carcass is difficult to extend into the third gap 33 formed between the tread shell 2 and the side surface 14. Based on this, the third gap 33 can remain open during the tire body pressing process and form a connected exhaust path with the first gap 31 and the second gap 32, so that in addition to flowing along the direction of the mounting surface 12, the gas can also flow and be discharged along the side area of ​​the mounting groove 13, thereby improving the continuity of the exhaust path, improving the gas discharge efficiency, and helping to improve the bonding quality between the tire body and the tread shell 2.

[0037] In Implementation Method 1 and Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the tire mold also includes a locking member 6. The base 1 is provided with an assembly hole 15 that mates with the locking member 6. The assembly hole 15 passes through the base 1 and the positioning member 11. The assembly hole 15 is provided with an assembly opening 16 at the top of the positioning member 11. The patterned outer shell 2 is provided with a locking hole 22 that mates with the locking member 6. The first exhaust channel 4 is a channel located in the assembly hole 15 of the base 1.

[0038] By setting a locking member 6, the base 1 has an assembly hole 15 that mates with the locking member 6, and the tread pattern outer shell 2 has a locking hole 22 that mates with the locking member 6. The locking member 6 passes through the assembly opening 16 at the top of the positioning member 11 and mates with the locking hole 22, thereby fixing the tread pattern outer shell 2 to the base 1. Since the locking member 6 forms a locking constraint on the tread pattern outer shell 2, it can limit the movement of the tread pattern outer shell 2 relative to the base 1, improve the stability of the tread pattern outer shell 2 after installation, and thus help ensure that the tread pattern outer shell 2 is in a stable working state. The assembly hole 15 located in the base 1 forms a first exhaust channel 4. When the tire carcass squeezes the tread pattern outer shell 2, the gas between the tread pattern outer shell 2 and the tire carcass can enter the first exhaust channel 4 and be discharged outward. Since the first exhaust channel 4 is formed using the existing assembly hole 15, there is no need to set up an additional independent exhaust structure to increase the exhaust path, so that the assembly hole 15 has the functions of installing the locking member 6 and venting gas, improving the structural integration.

[0039] Furthermore, the configuration of the second exhaust channel 5 can be any of the following examples: Example 1: such as Figure 1 , Figure 2 As shown, the second exhaust channel 5 is a channel located in the assembly hole 15 of the positioning member 11. The top surface of the positioning member 11 is provided with a guide groove 111 that connects to the assembly port 16. The guide groove 111 has a guide opening that exposes the outer contour of the positioning member 11. The second gap 32 is connected to the second exhaust channel 5.

[0040] Furthermore, such as Figure 1 , Figure 6 As shown, the flow guide 111 can be configured such that the positioning member 11 extends along a preset direction, and multiple mounting holes 15 are provided, with the multiple mounting holes 15 arranged sequentially at intervals along the preset direction. The flow guide 111 extends along the extension direction of the positioning member 11 and sequentially connects to the multiple mounting holes 15; or, as shown... Figure 6 As shown, a plurality of flow guide grooves 111 are provided in an assembly hole 15, and the flow guide grooves 111 are arranged sequentially at intervals along the circumference of the assembly hole 15. It will be clear to those skilled in the art that, in addition to providing flow guide grooves 111, the top surface of the positioning member 11 can also be provided as a slightly rough surface with concave and convex features, in which countless continuous and intersecting micro-fluid channels are naturally formed by the densely distributed micro-protrusions and depressions on the surface, thereby achieving the flow guiding effect; or, multiple protrusions can be provided on the bottom wall of the positioning groove 21, and fluid channels can be formed by the protrusions and the top surface of the positioning member 11.

[0041] By setting the assembly hole 15 of the positioning member 11 as the second exhaust channel 5, and providing a guide groove 111 connecting the assembly port 16 on the top surface of the positioning member 11, and making the guide groove 111 have a guide opening that exposes the outer contour of the positioning member 11, the second gap 32, the guide groove 111, and the second exhaust channel 5 can form a connected exhaust path. The second gap 32 is formed between the outer contour of the positioning member 11 and the positioning groove 21. When gas flows to the second gap 32, it enters the guide groove 111 through the guide opening and then enters the second exhaust channel 5 through the assembly port 16, thereby guiding the gas from the outer periphery of the positioning member 11 to the interior of the assembly hole 15 for discharge. Since the guide groove 111 is located on the top surface of the positioning member 11, and the guide opening exposes the outer contour of the positioning member 11, the guide groove 111 can collect the gas around the positioning member 11 to the assembly port 16, forming a clear guiding connection between the second gap 32 and the second exhaust channel 5, preventing gas from stagnating in the area around the positioning member 11. Furthermore, the second exhaust channel 5 is formed by utilizing the channel itself of the mounting hole 15, which not only meets the assembly requirements of the locking component 6 but also serves as an exhaust function. This allows the mounting hole 15 to simultaneously function as both the installation channel for the locking component 6 and the gas exhaust channel, thereby improving the structural utilization rate. Based on this, gas can flow continuously and be discharged along the second gap 32, the guide groove 111, and the second exhaust channel 5, thus expanding the exhaust path and improving the connectivity and exhaust efficiency between the exhaust channels.

[0042] Example 2: such as Figure 1 , Figure 3 As shown, the tire mold also includes a third exhaust channel 7. The second exhaust channel 5 is a channel located in the assembly hole 15 of the positioning member 11. The third exhaust channel 7 includes a drain port disposed on opposite sides of the positioning member 11. The drain port extends toward the channel of the assembly hole 15 and communicates with the assembly hole 15 in gas. The drain port is connected to the second gap 32.

[0043] By setting the assembly hole 15 in the positioning member 11 as the second exhaust channel 5, and providing drainage ports on opposite sides of the positioning member 11, with the drainage ports extending towards and communicating with the assembly hole 15 for gas, and simultaneously communicating with the second gap 32, a gas guiding path can be established between the second gap 32 and the second exhaust channel 5. When gas flows to the second gap 32 formed between the outer contour of the positioning member 11 and the positioning groove 21, it can enter the second exhaust channel 5 through the drainage ports and be discharged along the assembly hole 15, thereby achieving gas communication between the second gap 32 and the second exhaust channel 5. Since the drainage ports are located on opposite sides of the positioning member 11, the gas in the areas on both sides of the positioning member 11 can be guided respectively, allowing gas from different positions in the second gap 32 to converge towards the assembly hole 15, thus increasing the communication range between the second gap 32 and the second exhaust channel 5. Furthermore, the inlet extends towards the assembly hole 15, allowing gas to directly enter the second exhaust channel 5 after entering the inlet from the second gap 32, shortening the gas flow path and reducing gas flow resistance. Based on this, the gas in the second gap 32 can more quickly converge to the assembly hole 15 and be discharged, improving gas extraction efficiency. Simultaneously, by forming multiple inlets communicating with the second gap 32 on both sides of the positioning member 11, even if the gas guiding capacity of a local area of ​​the second gap 32 is affected, the gas can still enter the second exhaust channel 5 through the inlet on the other side, thereby improving the coverage of the exhaust path and the stability of the exhaust process.

[0044] Example 3: This example 3 is not illustrated. The second exhaust channel is a channel located in the assembly hole of the positioning member. The top surface of the positioning member is provided with a guide groove that connects to the assembly port. The guide groove has a guide port that exposes the outer contour of the positioning member. The second gap is connected to the second exhaust channel. The tire mold also includes a third exhaust channel. The third exhaust channel includes a drain port located on opposite sides of the positioning member. The drain port extends toward the channel of the assembly hole and is connected to the gas in the assembly hole. The drain port is connected to the second gap.

[0045] Example 4: This example 4 is not illustrated. The tire mold also includes a third venting channel. The second venting channel is a channel of the assembly hole located between the assembly port and the mounting surface. The third venting channel includes a drain port located on opposite sides of the positioning member. The drain port extends toward the channel of the assembly hole and communicates with the second venting channel. The drain port communicates with the second gap.

[0046] Multiple mounting holes 15 are combined to form multiple second exhaust channels 5, expanding the exhaust path from a single exhaust position to multiple exhaust positions distributed along a preset direction. When gas flows to the vicinity of the positioning member 11, it can enter the nearest mounting hole 15 for discharge according to its location, thereby shortening the flow distance of the gas to reach the exhaust channel. Furthermore, the multiple second exhaust channels 5 are distributed at intervals along the preset direction, which can expand the coverage area of ​​the exhaust area, so that the gas at different positions of the positioning member 11 can obtain the corresponding exhaust path, improving the uniformity of exhaust. When the exhaust capacity of the second exhaust channel 5 corresponding to one mounting hole 15 decreases, the second exhaust channels 5 formed by the other mounting holes 15 can still continue to discharge gas, thereby improving the redundancy and stability of the overall exhaust system. Thus, multiple mounting holes 15 can not only improve the locking reliability between the tread shell 2 and the base 1, but also enhance the coverage and air guiding capacity of the exhaust path, allowing the gas to be discharged more quickly and evenly, further reducing gas retention, and improving the adhesion between the tire body and the tread shell 2.

[0047] Preferably, the assembly hole 15 is an elliptical through hole, and the locking member 6 passes through the assembly hole 15 and is threadedly connected to the locking hole 22.

[0048] Furthermore, the base 1 is provided with a mounting hole that communicates with the assembly hole 15. A stepped portion is formed at the junction of the mounting hole and the assembly hole 15. The stepped portion abuts against the limiting head of the locking member 6 to achieve limiting.

[0049] Furthermore, in a preferred embodiment of this application, such as Figure 6 As shown, the positioning member 11 extends along a preset direction, and multiple assembly holes 15 are provided, with the multiple assembly holes 15 arranged sequentially at intervals along the preset direction.

[0050] By setting multiple mounting holes 15 and arranging them sequentially at intervals along a preset direction of the positioning member 11, the mounting holes 15 can be distributed at different positions along the length of the positioning member 11. When the patterned outer shell 2 is installed on the base 1, the multiple mounting holes 15 can respectively cooperate with the corresponding locking member 6 to form multi-point locking of the patterned outer shell 2. This disperses the force on the patterned outer shell 2 to multiple locking positions, reduces the force concentration at a single locking position, and improves the stability of the patterned outer shell 2 after installation, thereby helping to maintain the positional accuracy of the patterned outer shell 2 during use.

[0051] Furthermore, such as Figure 5 , Figure 6 As shown, the positioning member 11 has an assembly section 112 between two adjacent assembly holes 15, and the assembly section 112 is used for positioning with the positioning groove 21.

[0052] Multiple assembly holes 15 are spaced apart along a preset direction, and assembly sections 112 are provided between adjacent assembly holes 15, so that the positioning effect is distributed to multiple positions along the extension direction of the positioning member 11. The multiple assembly sections 112 together form a positioning support, thereby improving the stability of the fit between the positioning member 11 and the positioning groove 21, enhancing the positional constraint capability during the installation of the patterned shell 2, and helping to improve the consistency and accuracy of the installation position of the patterned shell 2.

[0053] The positioning settings for assembly section 112 and positioning slot 21 can be any of the following examples: Example 5: such as Figure 5 As shown, one of the top of the assembly section 112 and the bottom wall of the positioning groove 21 is provided with a positioning boss 113, and the other is provided with a positioning groove 24 that cooperates with the positioning boss 113.

[0054] Example 6: This example 6 is not illustrated. The top of the assembly section and the bottom wall of the positioning groove are provided with pin holes. The pin holes of the assembly section or the positioning groove are provided with positioning pins. The assembly section and the positioning groove are positioned by the positioning pins.

[0055] Example 7: This example 7 is not illustrated. The assembly section is divided into segments along the protruding direction. The top segment is the positioning segment, and the bottom segment is the mating segment. The positioning segment transitions into the positioning groove, and the mating segment and the groove wall of the positioning groove are provided with a second gap.

[0056] Furthermore, in a preferred embodiment of this application, such as Figure 2 As shown, the arc-shaped transition section 23 is connected to the side wall of the positioning groove 21. The outer edge of the patterned outer shell 2 and the mounting surface 12 form the entrance of the first gap 31.

[0057] A transition gap is formed between the arc-shaped transition section 23 and the positioning element 11, and the first gap 31 is connected to the second gap 32 through the transition gap.

[0058] Those skilled in the art will understand that the arc-shaped transition section 23 can also be connected to the side wall of the positioning groove 21 via a straight section and / or an arc-shaped section.

[0059] In another preferred embodiment, the patterned outer shell 2 includes an arcuate transition section 23 on the sidewall of the connected positioning groove 21 and an extension section connecting the arcuate transition section 23. The extension section forms a connection gap with the mounting surface, and the connection gap communicates with the first gap 31. The entrance of the first gap 31 is located at the end of the connection gap.

[0060] Furthermore, such as Figure 7As shown, the mounting surface 12 of the base 1 or the patterned outer shell 2 is provided with a storage tank 17. Along the airflow direction, the storage tank 17 is located downstream of the inlet of the first gap 31 and is connected to the first gap 31. Preferably, the tank wall of the storage tank 17 is inclined and smoothly transitions with the outer contours of the mounting surface 12 and the positioning member 11, respectively; or, the tank wall of the storage tank 17 is inclined and smoothly transitions with the mounting surface 12.

[0061] Those skilled in the art will understand that the storage tank 17 can also be located in the arc-shaped transition section of the patterned outer shell. The storage tank 17 is positioned downstream of the inlet of the first gap 31 and connected to the first gap 31 along the airflow direction, allowing the airflow between the substrate 1 and the tire body to be discharged outwards through the first gap 31. During production, situations such as glue overflow and fluctuations in operating conditions may occur, causing a small amount of glue to enter the first gap 31 along with the airflow. The storage tank 17 can contain and buffer the glue that enters the first gap 31 with the airflow, thereby delaying the blockage process of the first gap 31, extending the continuous operation time of the equipment, and reducing the number of glue removal shutdowns. The walls of the storage tank 17 are inclined, and the walls smoothly transition and connect with the outer contours of the mounting surface 12 and the positioning member 11. On the one hand, the connecting area allows the injected colloid to flow smoothly into the storage tank 17, delaying gap blockage; on the other hand, the smooth transition of the streamlined structure weakens airflow disturbance, ensuring stable and smooth airflow between the base 1 and the tire body. The value range of the first gap 31 is 0.02 to 0.1 mm, which includes the two endpoints of 0.02 mm and 0.1 mm. The size of the first gap 31 can be adjusted by controlling the depth of the positioning groove 21 or the precision of the fit between the positioning groove 21 and the outer contour of the positioning member 11.

[0062] Those skilled in the art will understand that, in addition to the above-mentioned setting of the arc transition section 23 connecting the side wall of the positioning groove 21, this application can also set a straight section connecting to the side wall of the positioning groove 21, the straight section being in contact with the mounting surface 12, the straight section being provided with multiple flow grooves, the opening of the flow grooves exposing the outer contour of the patterned outer shell 2, the flow grooves communicating with the second gap 32, and the flow grooves being the first gap 31.

[0063] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0064] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0065] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A tire mold characterized by, include: The base has multiple positioning elements and a mounting surface, wherein the positioning elements are protruding structures disposed on the mounting surface; The tread pattern housing has a positioning groove that mates with the positioning member. The tread pattern housing is used to abut against the tire carcass to form tread grooves on the tread of the tire carcass. The tread pattern housing is installed on the positioning member. A flow guiding gap is formed between the tread pattern housing, the positioning member, and the base. The flow guiding gap includes a first gap. The top surface of the positioning member abuts against the bottom wall of the positioning groove. The first gap is formed between the tread pattern housing and the mounting surface. The base is provided with a first exhaust channel, the positioning member is provided with a second exhaust channel, the first exhaust channel is connected to the second exhaust channel, the guide gap is connected to the second exhaust channel, and the gas between the tire carcass and the base is discharged from the base through the guide gap, the second exhaust channel and the first exhaust channel; The patterned outer shell includes an arc-shaped transition section disposed at the entrance of the first gap. The arc-shaped convex surface of the arc-shaped transition section protrudes towards the first gap. The arc-shaped transition section extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction. The value range of α is: 0°≤α≤60°.

2. The tire mold according to claim 1, wherein, The flow guiding gap also includes a second gap formed by the outer contour of the positioning member and the positioning groove, and the first gap and the second gap are in communication.

3. The tire mold according to claim 2, wherein, The base is provided with a mounting groove for accommodating the tire body, the bottom surface of the mounting groove is the mounting surface, the base also includes a side surface connected to the mounting surface, and the guide gap also includes a third gap formed by the outer contour of the pattern shell and the side surface, the third gap communicating with the first gap and the second gap.

4. Tyre mould according to claim 2 or 3, characterised in that, It also includes a locking component, the base having an assembly hole that mates with the locking component, the assembly hole penetrating the base and the positioning component, the assembly hole having an assembly opening at the top of the positioning component, the patterned outer shell having a locking hole that mates with the locking component, and the first exhaust channel being a channel located in the assembly hole of the base.

5. The tire mold of claim 4, wherein, The second exhaust channel is a channel located in the assembly hole of the positioning member. The top surface of the positioning member is provided with a guide groove that communicates with the assembly port. The guide groove has a guide opening that exposes the outer contour of the positioning member. The second gap communicates with the second exhaust channel.

6. The tire mold of claim 4, wherein, It also includes a third exhaust channel, the second exhaust channel being a channel located in the assembly hole of the positioning member, the third exhaust channel including drain ports disposed on opposite sides of the positioning member, the drain ports extending toward the channel of the assembly hole and communicating with the gas of the assembly hole, the drain ports communicating with the second gap.

7. The tire mold of claim 4, wherein, The positioning element extends along a preset direction, and multiple assembly holes are provided, with the multiple assembly holes arranged sequentially at intervals along the preset direction.

8. The tire mold according to claim 7, wherein, The positioning component has an assembly section between two adjacent assembly holes, and the assembly section is used for positioning with the positioning groove.

9. The tire mold of claim 8, wherein, The top of the assembly section and the bottom wall of the positioning groove are provided with a positioning boss, and the other one is provided with a positioning groove that cooperates with the positioning boss.

10. The tire mold of claim 1, wherein, The mounting surface or patterned outer shell is provided with a storage trough. Along the airflow direction, the storage trough is located downstream of the inlet of the first gap, and the storage trough is connected to the first gap.

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