Two-part mold for a solid tire without air holes

Abstract

The application provides a gas-hole-free solid tire two-half mold, relates to the tire mold technical field and comprises an upper mold body and a lower mold body, the upper mold body comprises an upper mold shell and an upper mold base, the lower mold body comprises a lower mold shell and a lower mold base, the upper mold shell and the lower mold shell are respectively fixed with an upper mold core and a lower mold core in the center; after the upper mold body and the lower mold body are closed, the upper mold base inner wall, the upper mold core outer wall, the lower mold base inner wall and the lower mold core outer wall form a mold cavity; the connecting surfaces of the upper mold shell and the upper mold base and the connecting surfaces of the mold shell and the lower mold base are respectively provided with exhaust grooves, and the exhaust grooves are circumferentially arranged; the upper mold shell and the lower mold shell are respectively provided with fine adjustment components for adjusting the sizes of the corresponding exhaust grooves; the upper mold core and the lower mold core are respectively provided with core holes and a plurality of radial grooves arranged circumferentially on one side, and the core hole of the lower mold core is provided with a limiting component.

Description

Technical Field

[0001] This invention relates to the field of tire mold technology, and in particular to a two-half mold for a solid tire without air holes. Background Technology

[0002] Currently, solid tires are vulcanized using tire molds. Tire molds include movable molds and two-part molds. Movable molds consist of tread rings, mold sleeves, upper and lower side plates, while two-part molds consist of an upper mold and a lower mold. To facilitate tire demolding, movable molds are mainly used for tires with deeper treads, while two-part molds are mainly used for tires with shallower treads. To prevent insufficient rubber formation on the surface or air bubbles inside the tire during vulcanization, the upper and lower mold sidewalls of both two-part molds have a circular array of vents communicating with the mold cavity, allowing for air venting between the mold's interior and exterior.

[0003] However, in actual use, the pores on the two halves of the mold are generally very small. During vulcanization, some gases cannot escape in time, which can cause insufficient rubber on the tire surface or air bubbles inside the tire, affecting tire quality. Due to the presence of pores in the mold, numerous tire hairs will form in the vulcanized tire, making demolding difficult. Furthermore, most of the tire hairs will break off inside the mold pores after demolding, causing blockages. The remaining tire hairs on the tire surface result in an unsightly appearance and are difficult to remove. In addition, different tires have different requirements for pore size, which limits the applicability of the mold. Moreover, when the two halves of the mold are opened, the tread pattern can cause uncertainty about whether the solid tire will be demolded inside the upper or lower mold, hindering demolding of the solid tire. Summary of the Invention

[0004] The purpose of this invention is to provide a two-part mold for solid tires without air holes. It utilizes the air venting grooves on the connecting surface for air venting, eliminating the need for additional air vents and preventing the formation of tire hairs during vulcanization. Furthermore, the size of the air venting grooves can be finely adjusted to meet the production needs of different tires and improve the applicability of the mold. The demolding position of the solid tire is fixed, facilitating the demolding of the solid tire.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A two-part mold for a solid tire without air holes includes an upper mold body and a lower mold body symmetrically arranged vertically. The upper mold body includes a detachably fixed upper mold shell and an upper mold base. The lower mold body includes a detachably fixed lower mold shell and a lower mold base. An upper mold core is fixed at the center of the upper mold shell, and a lower mold core is fixed at the center of the lower mold shell. After the upper and lower mold bodies are closed, the inner wall of the upper mold base, the outer wall of the upper mold core, the inner wall of the lower mold base, and the outer wall of the lower mold core form a cavity for making a solid tire. The upper mold body has an injection hole that communicates with and penetrates the cavity. The upper mold shell and the upper mold base are close to each other. On the connecting surfaces of the upper and lower mold cores, as well as on the connecting surfaces of the lower mold shell and the lower mold base that are close to each other, there are several venting grooves arranged in a circumferential array, and the two ends of each venting groove are respectively connected to the cavity and the outside of the mold. The upper mold shell and the lower mold shell are respectively provided with fine-tuning components for adjusting the size of the corresponding venting grooves. The upper mold core and the lower mold core are respectively provided with core holes on their close sides. On the end faces of the upper mold core and the lower mold core that are close to each other, there are several spoke grooves arranged in a circumferential array to cooperate with the spokes on the wheel hub. The spoke grooves are connected to the core holes and the cavity, and the core hole of the lower mold core is provided with a limiting component for limiting the wheel hub.

[0007] By adopting the above technical solution, the wheel hub is placed on the lower mold core. The mounting plate at the center of the wheel hub and some spokes are located in the core hole of the lower mold core, and the spokes are placed in the spoke grooves. The outer ring of the wheel hub is located in the cavity. After the upper and lower mold bodies are closed, rubber is injected into the cavity through the injection hole, and vulcanization is carried out by a vulcanizing machine to achieve the vulcanization and molding of the solid tire. During the vulcanization process, air is released through the venting groove, but no rubber is discharged. After the solid tire is vulcanized and molded, the wheel hub is limited by the limiting component before the mold is opened, so that the solid tire remains in the lower mold body after the mold is opened, ensuring that the demolding position is fixed and facilitating the demolding of the solid tire.

[0008] In existing technologies, the upper and lower mold bodies are separate halves. In this invention, the upper and lower mold bodies are further divided into two halves, each comprising a mold shell and a mold base. This increases the contact surface, and venting grooves are formed on the contact surface for venting. This eliminates the need for venting holes on the outer walls of the upper and lower mold bases, thus preventing the formation of tire hairs and clogging of the venting grooves, thereby ensuring effective venting during the next solid tire vulcanization process. Furthermore, the size of the venting grooves can be finely adjusted using a micro-adjustment component to meet the production needs of different tires, expanding the mold's applicability.

[0009] Furthermore, the bottom of the venting groove on the horizontal surface of the upper and lower mold shells is provided with an adjustment groove communicating with it. An adjustment piece is vertically slidably installed in the adjustment groove. The upper and lower mold shells are respectively provided with vertically arranged rod grooves communicating with the adjustment grooves. The fine-tuning component includes an adjustment rod that is rotatably installed in the rod groove and threadedly connected to the adjustment piece. The end of the adjustment rod away from the corresponding adjustment piece extends out of the end face of the upper and lower mold shells away from the venting grooves, and is fixed with a fine-tuning gear. The upper end of the upper mold shell and the lower end of the lower mold shell are respectively rotatably installed with adjustment gears coaxially arranged with them. The adjustment gears mesh with a plurality of corresponding fine-tuning gears surrounding them in the circumference.

[0010] By adopting the above technical solution, different solid tires have different venting requirements. When the size of the venting groove needs to be finely adjusted, an externally driven adjusting gear rotates. The adjusting gear drives several corresponding fine-tuning gears to rotate synchronously. The fine-tuning gears drive the corresponding adjusting rods to rotate. Under the threaded connection between the adjusting plate and the adjusting rod, and the limiting and guiding effect of the adjusting groove on the adjusting plate, the adjusting plate is driven to move within the adjusting groove, thereby fine-tuning the size of the venting groove to meet the venting requirements of solid tire vulcanization. Specifically, adjusting plates are set in the venting grooves of the upper and lower mold shells. The size of the venting groove is adjusted by changing the position of the adjusting plates within the adjusting groove. This structure is simple, convenient to operate, simplifies the structure of the upper and lower mold bases, and avoids adjusting the distance between the connecting surfaces of the upper mold shell and the upper mold base, and between the connecting surfaces of the lower mold shell and the lower mold base. This prevents gaps between the connecting surfaces from causing rubber leakage and ensures the vulcanization quality of the solid tire.

[0011] Furthermore, an external gear is provided on the outer side of the adjusting gear, which is coaxial with and integrally formed thereon. A drive gear located on the outer side of the corresponding external gear is respectively positioned and rotatably mounted on the upper mold shell and the lower mold shell. The drive gear meshes with the corresponding external gear.

[0012] By adopting the above technical solution, the drive gear rotates, which in turn drives the external gear meshing with it to rotate. The external gear then drives the integrated adjusting gear to rotate synchronously, and the adjusting gear drives several corresponding fine-tuning gears to rotate. This forms a multi-stage reduction transmission, enabling fine-tuning of the adjusting plate position and improving adjustment accuracy. Furthermore, the input end for driving the adjusting gear is eccentrically positioned on both the upper and lower mold shells to avoid interference with the subsequent limit components, ensuring a reasonable structural layout.

[0013] Furthermore, both the upper and lower mold shells are provided with accommodating cavities, and several fine-tuning gears, adjusting gears, external gears, and driving gears are located in the corresponding accommodating cavities; the upper end face of the upper mold shell and the lower end face of the lower mold shell are respectively provided with adjusting holes communicating with the corresponding accommodating cavities, and the adjusting holes are coaxially arranged with the corresponding driving gears.

[0014] By adopting the above technical solution, the fine-tuning gear, adjusting gear, external gear, and drive gear are all located within the accommodating cavity. This cavity protects the fine-tuning assembly, preventing damage during pressurization in the vulcanizing machine and extending its service life. The adjusting hole is coaxially aligned with the drive gear, facilitating connection of the external drive structure to the drive gear and enabling its rotation.

[0015] Furthermore, the lower end face of the upper mold base is provided with a discharge port that communicates with the cavity. The discharge port is teardrop-shaped, and the end that communicates with the cavity is a small opening. The end of the discharge port away from the cavity is provided with a discharge groove that communicates with it and the other end penetrates through the side wall of the upper mold base. Several discharge ports and discharge grooves are arranged in a circumferential array.

[0016] By adopting the above technical solution, the teardrop-shaped discharge port is used for discharging rubber during the vulcanization process. The discharge port has a small inlet but a large outlet, which controls the amount of rubber discharged while achieving discharge. The discharged rubber material is discharged from the discharge port through the discharge trough, avoiding blockage and ensuring effective discharge. In addition, the channel formed by the discharge port and the discharge trough can also be used for venting, which, together with the venting trough, accelerates venting.

[0017] Furthermore, the limiting component includes a chassis rotatably mounted in the core hole of the lower mold, with a plurality of vertically arranged uprights arranged in a circumferential array on the chassis, and the plurality of uprights being spaced apart from a plurality of spoke grooves; the top of each upright is provided with a limiting block located between adjacent spoke grooves, and the limiting block and the upright form an L-shaped structure with the opening facing downwards; the rotating shaft of the adjusting gear is hollowly provided to form a shaft hole, and a vertically arranged limiting shaft is fixed at the bottom of the chassis, the limiting shaft being located in the shaft hole of the adjusting gear, and its outer diameter being smaller than the inner diameter of the shaft hole of the adjusting gear.

[0018] By adopting the above technical solution, before the mold is opened after the solid tire is vulcanized, the externally driven limiting shaft drives the chassis to rotate. The overall rotation of the chassis causes the limiting block to rotate above the spokes inside the core hole. The limiting block presses down on the upper end of the spokes. In this way, when the mold is opened, the solid tire is first demolded from the upper mold base and left in the lower mold base, thus fixing the demolding position of the solid tire in the lower mold base. After the mold is opened, the driving limiting shaft rotates in the opposite direction, causing the chassis to drive the limiting block to rotate away from the upper end of the spokes, making it easy to remove the solid tire from the lower mold base. Its structure is simple, easy to operate, and has obvious effects.

[0019] Furthermore, the lower end face of the limiting block has an inwardly curved arc structure, and an elastic protective layer that fits onto the arc structure.

[0020] By adopting the above technical solution, the lower end face of the limiting block has an arc-shaped structure, resulting in different heights on the bottom surface of the limiting block. This allows the limiting block to limit the movement of hubs with various spoke heights, thus improving the applicability of the mold. Furthermore, an elastic protective layer is provided on the arc-shaped structure of the limiting block to protect the spokes in contact with it, preventing marks from being left on the spokes.

[0021] Furthermore, the outer walls of the upper and lower mold shells are rotatably mounted with positioning rings coaxial with them, and L-shaped hooks are symmetrically provided on the side of the two positioning rings that are close to each other. Several L-shaped hooks are arranged in a circumferential array. The outer walls of the upper and lower mold bases are arranged in a circumferential array with multiple hook blocks, and the side walls of the hook blocks are provided with hook grooves that cooperate with the L-shaped hooks.

[0022] By adopting the above technical solution, after the upper mold shell and the upper mold base come into contact with each other or the lower mold shell and the lower mold base come into contact with each other, the corresponding positioning ring is driven to rotate. Several L-shaped hooks rotate synchronously with the positioning ring and are engaged in the hook grooves on the corresponding hook blocks. Under the cooperation of the L-shaped hooks and hook grooves, the assembly and fixation between the upper mold shell and the upper mold base, and between the lower mold shell and the lower mold base are realized. Its structure is simple and easy to disassemble and assemble quickly, which facilitates the cleaning of the venting groove and ensures the smoothness of the venting groove.

[0023] Furthermore, a locking post is provided on the end face of the positioning ring away from the L-shaped hook, and locking plates are rotatably installed on the outer walls of the upper mold shell and the lower mold shell, and the rotation axis of the locking plates is set horizontally; the locking plates are provided with locking holes that cooperate with the locking posts, and when the L-shaped hook is located in the hook groove, the locking post passes through the locking holes on the corresponding locking plates.

[0024] By adopting the above technical solution, after the L-shaped hook is inserted into the corresponding hook groove, rotating the clamping plate causes the clamping hole on the clamping plate to engage with the clamping post on the positioning ring. The clamping hole's limiting effect on the clamping post prevents the positioning ring from rotating in the opposite direction, thus preventing the L-shaped hook from disengaging from the corresponding hook groove. This ensures the stability of the assembly and fixation between the upper mold shell and the upper mold base, and between the lower mold shell and the lower mold base, thereby guaranteeing the mold's performance. When it is necessary to disassemble the upper mold shell from the upper mold base, or the lower mold shell from the lower mold base, rotating the clamping plate causes the clamping hole to disengage from the clamping post, and then rotating the positioning ring in the opposite direction allows the L-shaped hook to be rotated out of the corresponding hook groove. The structure is simple, easy to operate, and has a significant effect.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. By setting the upper mold body to include an upper mold shell and an upper mold base, and the lower mold body to include a lower mold shell and a lower mold base, and circumferentially arraying several mutually cooperating venting grooves on the connecting surfaces of the upper mold shell and the upper mold base and the connecting surfaces of the lower mold shell and the lower mold base, and connecting the two ends of the venting grooves to the cavity and the outside of the mold respectively, and using the venting grooves for venting, there is no need to open venting holes on the outer walls of the upper mold base and the lower mold base, thereby avoiding the formation of tire hair and avoiding the blockage of the venting grooves, thus ensuring the venting effect in the next solid tire vulcanization process;

[0027] 2. An adjustment groove is set at the bottom of the venting groove on the horizontal surface of the upper and lower mold shells, and an adjustment plate is vertically slidably installed in the adjustment groove. The adjustment plate is connected to a fine-tuning component to adjust its position in the adjustment groove. The size of the venting groove is adjusted by changing the position of the adjustment plate in the adjustment groove using the fine-tuning component, so as to meet the venting requirements of different solid tires during vulcanization. This simplifies the structure of the upper mold base and the lower mold base, and avoids adjusting the distance between the upper mold shell and the upper mold base connection surface and the lower mold shell and the lower mold base connection surface, thus avoiding gaps between the connection surfaces that could lead to rubber leakage and ensuring the vulcanization molding quality of the solid tire.

[0028] 3. Use limiting components to limit the wheel hub, so that the solid tire remains in the lower mold after the mold is opened, ensuring that the demolding position is fixed and facilitating the demolding of the solid tire.

[0029] 4. By utilizing the positioning ring and the hook groove on the L-shaped hook and hook block, the upper mold shell and upper mold base, as well as the lower mold shell and lower mold base, are assembled and fixed, which facilitates quick assembly and disassembly, and makes it easy to clean the venting groove and ensure the unobstructed flow of the venting groove. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a two-half mold for a non-porous solid tire.

[0031] Figure 2 This is a first sectional view of a two-half mold for a solid tire without air holes;

[0032] Figure 3 This is an exploded view of a two-half mold for a solid tire without pores.

[0033] Figure 4 This is a second sectional view of a two-half mold for a non-porous solid tire.

[0034] Figure 5 yes Figure 4 Enlarged view of section B;

[0035] Figure 6 yes Figure 3 Enlarged view of section A;

[0036] Figure 7This is a schematic diagram of the lower mold core in a two-half mold for a solid tire without air holes, used to illustrate the limiting component.

[0037] In the diagram, 1. Upper mold body; 11. Upper mold shell; 12. Upper mold base; 13. Upper mold core; 14. Injection hole; 2. Lower mold body; 21. Lower mold shell; 22. Lower mold base; 23. Lower mold core; 3. Cavity; 4. Venting groove; 41. Glue outlet; 42. Glue outlet groove; 5. Fine-tuning component; 51. Adjustment groove; 52. Adjustment piece; 53. Adjustment rod; 531. Rod groove; 54. Fine-tuning gear; 55. Adjustment gear; 56. External gear; 57. Drive gear; 6. Accommodating cavity; 61. Cover plate; 62. Adjustment hole; 63. Demolding hole; 7. Core hole; 71. Spoke groove; 8. Limiting component; 81. Chassis; 82. Upright post; 83. Limiting block; 831. Elastic protective layer; 84. Limiting shaft; 9. Positioning ring; 91. L-shaped hook; 92. Locking post; 93. Locking plate; 931. Locking hole; 10. Hook block; 101. Hook groove. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0039] A type of non-porous solid tire two-half mold, such as Figure 1 As shown, the system includes an upper mold body 1 and a lower mold body 2 arranged symmetrically. The upper mold body 1 includes an upper mold shell 11 and an upper mold base 12 that are detachably and fixedly connected. The lower mold body 2 includes a lower mold shell 21 and a lower mold base 22 that are detachably and fixedly connected. Figure 2 As shown, an upper mold core 13 is fixed at the center of the upper mold shell 11, and a lower mold core 23 is fixed at the center of the lower mold shell 21. After the upper mold body 1 and the lower mold body 2 are closed, the inner wall of the upper mold base 12, the outer wall of the upper mold core 13, the inner wall of the lower mold base 22, and the outer wall of the lower mold core 23 form a cavity 3 for making a solid mold, and the upper mold body 1 is provided with an injection hole 14 that communicates with the cavity 3 and penetrates the upper mold body 1. Figure 2 and Figure 3 As shown, core holes 7 are provided on the side of the upper mold core 13 and the lower mold core 23 that are close to each other. Several spoke grooves 71 that cooperate with the spokes on the hub are arranged in a circular array on the end face of the side of the upper mold core 13 and the lower mold core 23 that are close to each other. The spoke grooves 71 connect the core holes 7 and the cavity 3.

[0040] like Figure 2 As shown, the hub is placed on the lower mold core 23. The mounting plate at the center of the hub and some of the spokes are located in the core hole 7 of the lower mold core 23, and the spokes are placed in the spoke groove 71. The outer ring of the hub is located in the cavity 3. After the upper mold body 1 and the lower mold body 2 are closed, rubber material is injected into the cavity 3 through the injection hole 14, and vulcanized by a vulcanizing machine to achieve the vulcanization molding of the solid tire.

[0041] like Figure 4 and Figure 5 As shown, several mutually cooperating venting grooves 4 are arranged in a circular array on the connecting surfaces of the upper mold shell 11 and the upper mold base 12, and on the connecting surfaces of the lower mold shell 21 and the lower mold base 22, respectively. The two ends of the venting grooves 4 are connected to the cavity 3 and the outside of the mold, respectively. Figure 4 As shown, a teardrop-shaped discharge port 41 is provided on the lower end face of the upper mold base 12, which is connected to the cavity 3. The end of the discharge port 41 that is connected to the cavity 3 is a small opening, and the end away from the cavity 3 is provided with a discharge groove 42 that is connected to it and passes through the side wall of the upper mold base 12. Several discharge ports 41 and discharge grooves 42 are arranged in a circumferential array.

[0042] like Figure 4 and Figure 5 As shown, the upper mold body 1 and the lower mold body 2 are respectively configured as two halves including a mold shell and a mold base, increasing the contact surface. Venting grooves 4 are formed on the contact surface for venting. This eliminates the need for venting holes on the outer walls of the upper mold base 12 and the lower mold base 22, thus preventing the formation of tire hairs and clogging of the venting grooves 4, thereby ensuring effective venting during the next solid tire vulcanization process. A teardrop-shaped rubber discharge port 41 is used for rubber discharge during vulcanization. The discharge port 41 has a small inlet but a large rear end, controlling the amount of rubber discharged while achieving discharge. The discharged rubber material exits from the discharge port 41 through the discharge groove 42, preventing clogging and ensuring effective discharge. Furthermore, the channel formed by the discharge port 41 and the discharge groove 42 can also be used for venting, further accelerating venting in conjunction with the venting groove 4.

[0043] like Figure 3 As shown, in this embodiment, the venting groove 4 has a depth of 1.5mm to ensure venting without discharging adhesive, and the venting groove 4 has 25 circumferential arrays; the adhesive discharge port 41 has a teardrop-shaped large end radius of 10mm, the adhesive discharge groove 42 has a depth of 6mm, and the adhesive discharge port 41 has 20 circumferential arrays (not fully shown in the figure).

[0044] like Figure 4 and Figure 5As shown, in order to ensure that the venting groove 4 can meet the venting requirements of different solid tire vulcanization molding, fine-tuning components 5 for adjusting the size of the corresponding venting groove 4 are respectively provided on the upper mold shell 11 and the lower mold shell 21. In this embodiment, the bottom of the venting groove 4 on the horizontal surface of the upper mold shell 11 and the lower mold shell 21 is provided with an adjustment groove 51 communicating with it. An adjustment piece 52 is vertically slidably installed in the adjustment groove 51. The upper mold shell 11 and the lower mold shell 21 are respectively provided with a vertically arranged rod groove 531 communicating with the adjustment groove 51. The upper end surface of the upper mold shell 11 and the upper end surface of the lower mold shell 21 are provided with a receiving cavity 6 coaxially arranged with them. The end of the rod groove 531 away from the adjustment groove 51 is connected to the corresponding receiving cavity 6. The opening of the receiving cavity 6 is provided with a cover plate 61 that is fixed to the upper end of the upper mold shell 11 and the lower end of the lower mold shell 21 by screws, and the receiving cavity 6 is covered by the cover plate 61.

[0045] like Figure 4 and Figure 5 As shown, the fine-tuning component 5 includes an adjusting rod 53 vertically arranged and rotatably mounted in a rod groove 531. The adjusting rod 53 is threadedly connected to an adjusting plate 52, and its end away from the adjusting plate 52 extends out of the rod groove 531 and is located in the corresponding receiving cavity 6. A fine-tuning gear 54 is fixed to one end of the adjusting rod 53 located in the receiving cavity 6. Figure 3 and Figure 5 As shown, an adjusting gear 55 is rotatably mounted coaxially within the accommodating cavity 6 at the upper end of the upper mold shell 11 and the lower end of the lower mold shell 21. The adjusting gear 55 meshes externally with several corresponding fine-tuning gears 54 surrounding it in the circumference. An external gear 56 is provided coaxially and integrally with the adjusting gear 55 and located within the accommodating cavity 6. A drive gear 57 located outside the corresponding external gear 56 is rotatably mounted on the lower end face of the cover plate 61 on the upper mold shell 11 and the lower mold shell 21, and the drive gear 57 meshes externally with the corresponding external gear 56. The cover plate 61 is provided with an adjusting hole 62 coaxially arranged with the drive gear 57, which facilitates the connection of an external drive mechanism to the rotating shaft of the drive gear 57 through the adjusting hole 62.

[0046] like Figure 3 , Figure 4 and Figure 5 As shown, the external drive mechanism drives the drive gear 57 to rotate, which in turn drives the external gear 56 meshing with it to rotate. The external gear 56 drives the integrated adjusting gear 55 to rotate synchronously. The adjusting gear 55 drives several corresponding fine-tuning gears 54 to rotate, and the fine-tuning gears 54 drive the corresponding adjusting rods 53 to rotate. Under the threaded connection between the adjusting plate 52 and the adjusting rod 53, and the limiting and guiding effect of the adjusting groove 51 on the adjusting plate 52, the adjusting plate 52 is driven to move within the adjusting groove 51, thereby adjusting the size of the exhaust groove 4 to meet the exhaust requirements of solid tire vulcanization. The above-mentioned fine-tuning components 5 form a multi-stage reduction transmission, realizing the fine-tuning of the position of the adjusting plate 52 and improving the adjustment accuracy.

[0047] like Figure 1 and Figure 3 As shown, in order to achieve a detachable and fixed connection between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22, in this embodiment, positioning rings 9 coaxially mounted are rotatably positioned on the outer walls of the upper mold shell 11 and the lower mold shell 21. L-shaped hooks 91 are symmetrically arranged on the side where the two positioning rings 9 are close to each other. The vertical section of the L-shaped hook 91 is fixedly connected to the corresponding positioning ring 9, and several L-shaped hooks 91 are arranged in a circumferential array. Multiple hook blocks 10 corresponding to the L-shaped hooks 91 are arranged in a circumferential array on the outer walls of the upper mold base 12 and the lower mold base 22, respectively. Each hook block 10 has a hook groove 101 on its side wall that mates with the L-shaped hook 91.

[0048] like Figure 1 and Figure 3 As shown, after the upper mold shell 11 and the upper mold base 12 come into contact with each other, or the lower mold shell 21 and the lower mold base 22 come into contact with each other, the corresponding positioning ring 9 is driven to rotate, and several L-shaped hooks 91 are synchronously rotated and locked into the hook grooves 101 on the corresponding hook blocks 10. Under the cooperation of the L-shaped hooks 91 and the hook grooves 101, the assembly and fixation between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22 are realized. When it is necessary to release the fixation, the positioning ring 9 is rotated in the opposite direction, and the L-shaped hooks 91 are rotated out from the hook grooves 101 on the corresponding hook blocks 10. The above structure facilitates the quick assembly and disassembly between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22, thereby facilitating the cleaning of the venting groove 4 and ensuring the unobstructed flow of the venting groove 4.

[0049] like Figure 3 and Figure 6 As shown, to ensure the stability of the fixation between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22 after the L-shaped hook 91 and the hook groove 101 are engaged, a vertically arranged locking post 92 is provided on the end face of the positioning ring 9 away from the L-shaped hook 91. Locking plates 93 are rotatably mounted on the outer walls of the upper mold shell 11 and the lower mold shell 21, respectively, with the rotation axis of one end of the locking plate 93 being horizontally arranged. The locking plate 93 has locking holes 931 that mate with the locking post 92. When the L-shaped hook 91 is located within the hook groove 101, the locking post 92 passes through the corresponding locking hole 931 on the locking plate 93.

[0050] like Figure 3 and Figure 6As shown, after the L-shaped hook 91 is inserted into the corresponding hook groove 101, the clamping plate 93 is rotated towards the positioning ring 9, so that the clamping hole 931 on the clamping plate 93 engages with the clamping post 92 on the positioning ring 9. Under the limiting effect of the clamping hole 931 on the clamping post 92, the positioning ring 9 is prevented from rotating in the opposite direction, which would cause the L-shaped hook 91 to disengage from the corresponding hook groove 101. This ensures the stability of the assembly and fixation between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22, thereby ensuring the effectiveness of the mold. When it is necessary to disassemble the upper mold shell 11 and the upper mold base 12, and the lower mold shell 21 and the lower mold base 22, the clamping plate 93 is rotated to disengage the clamping hole 931 from the clamping post 92, releasing the limiting effect on the positioning ring 9. Then, the positioning ring 9 can be rotated in the opposite direction to rotate the L-shaped hook 91 out of the corresponding hook groove 101.

[0051] like Figure 3 As shown, to avoid uncertainty about whether the solid tire will be demolded within the upper mold base 12 or the lower mold base 22 during demolding, which would cause inconvenience in demolding, a limiting component 8 for limiting the wheel hub is provided in the core hole 7 of the lower mold core 23. For example... Figure 4 and Figure 7 As shown, in this embodiment, the limiting component 8 includes a chassis 81 rotatably mounted in the core hole 7 of the lower mold core 23. A plurality of vertically arranged uprights 82 are arranged in a circumferential array on the chassis 81, with the uprights 82 spaced apart from the spokes 71. A limiting block 83 is provided at the top of the uprights 82, located between adjacent spokes 71, and the limiting block 83 and the uprights 82 form an L-shaped structure with the opening facing downwards. When the upper mold body 1 and the lower mold body 2 are closed, the limiting block 83 is located within the core hole 7 of the upper mold core 13. The rotating shaft of the adjusting gear 55 on the lower mold shell 21 is hollowly arranged to form a shaft hole. A vertically arranged limiting shaft 84 is fixed at the bottom of the chassis 81, located within the shaft hole of the corresponding adjusting gear 55, and its outer diameter is smaller than the inner diameter of the shaft hole of the adjusting gear 55. The cover plate 61 of the lower mold shell 21 is provided with a demolding hole 63 coaxially arranged with the limiting shaft 84 at its center position, and the lower end of the limiting shaft 84 extends out of the adjusting gear 55 shaft hole located in the demolding hole 63.

[0052] like Figure 4 and Figure 7 As shown, after the solid tire is vulcanized and before mold opening, an externally driven limiting shaft 84 drives the chassis 81 to rotate along the side where the limiting block 83 is located. The chassis 81 rotates as a whole, causing the limiting block 83 to rotate to the position above the spokes inside the core hole 7 of the upper mold core 13. The limiting block 83 presses down on the upper end of the spokes, so that when the mold opens, the solid tire first demolds from the upper mold base 12 and remains in the lower mold base 22, thus fixing the demolding position of the solid tire in the lower mold base 22. After mold opening, the driving limiting shaft 84 rotates in the opposite direction, causing the chassis to rotate the limiting block 83 away from the upper end of the spokes, facilitating the removal of the solid tire from the lower mold base 22. For example, Figure 7As shown, in this embodiment, the lower end face of the limiting block 83 has an inwardly curved arc structure. This allows the bottom surface of the limiting block 83 to have different heights, enabling it to limit the movement of hubs with various spoke heights and improving the applicability of the mold. Furthermore, a non-rubber elastic protective layer 831 is provided on the arc structure of the limiting block 83 to protect the spokes in contact with it and prevent marks from being left on the spokes.

[0053] Working principle and usage of this invention:

[0054] The size of the exhaust groove 4 is adjusted according to the exhaust requirements of solid tire vulcanization. An external drive mechanism drives the drive gear 57 to rotate, which in turn drives the external gear 56 meshing with it to rotate. The external gear 56 drives the integrated adjusting gear 55 to rotate synchronously. The adjusting gear 55 drives several corresponding fine-tuning gears 54 to rotate, and the fine-tuning gears 54 drive the corresponding adjusting rods 53 to rotate, thereby moving the driving adjusting plate 52 within the adjusting groove 51 and adjusting the exhaust groove 4 to the required size.

[0055] The hub is placed on the lower mold core 23. The mounting plate at the center of the hub and some spokes are located in the core hole 7 of the lower mold core 23, and the spokes are placed in the spoke groove 71. The outer ring of the hub is located in the cavity 3. After the upper mold body 1 and the lower mold body 2 are closed, rubber material is injected into the cavity 3 through the injection hole 14, and vulcanized by a vulcanizing machine to achieve the vulcanization molding of the solid tire. During the vulcanization process, the venting groove 4 is used for venting. The rubber material is discharged from the venting port 41 through the venting groove 42, and the channel formed by the venting port 41 and the venting groove 42 can also be used for venting, which, together with the venting groove 4, speeds up the venting process.

[0056] After the solid tire is vulcanized and before the mold is opened, the external drive limiting shaft 84 drives the chassis 81 to rotate along the side where the limiting block 83 is located. The chassis 81 rotates as a whole, causing the limiting block 83 to rotate to the top of the spokes in the core hole 7 of the upper mold core 13. The limiting block 83 presses down on the upper end of the spokes. In this way, when the mold is opened, the solid tire is first demolded from the upper mold base 12 and left in the lower mold base 22, thus fixing the demolding position of the solid tire in the lower mold base 22, which facilitates the demolding of the solid tire.

[0057] Under normal conditions, the L-shaped hook 91 is engaged in the corresponding hook groove 101, and the locking hole 931 on the locking plate 93 engages the locking post 92 on the positioning ring 9. The locking hole 931 limits the locking post 92, preventing the positioning ring 9 from rotating in the opposite direction and causing the L-shaped hook 91 to disengage from the corresponding hook groove 101. This ensures the stability of the assembly and fixation between the upper mold shell 11 and the upper mold base 12, and between the lower mold shell 21 and the lower mold base 22, thereby guaranteeing the mold's performance. When cleaning the venting groove 4 is required, rotating the locking plate 93 disengages the locking hole 931 from the locking post 92, releasing the limiting effect on the positioning ring 9. Then, the positioning ring 9 can be rotated in the opposite direction to rotate the L-shaped hook 91 out of the corresponding hook groove 101.

[0058] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A two-part mold for manufacturing a solid tire without air holes, comprising an upper mold body (1) and a lower mold body (2) arranged symmetrically in an upper and lower position, characterized in that: The upper die body (1) comprises an upper die shell (11) and an upper die base (12) which are detachably fixedly connected, the lower die body (2) comprises a lower die shell (21) and a lower die base (22) which are detachably fixedly connected, the upper die shell (11) is fixed with an upper die core (13) at a central position, and the lower die shell (21) is fixed with a lower die core (23) at a central position; after the upper die body (1) and the lower die body (2) are closed, the upper die base (12) inner wall, the upper die core (13) outer wall, the lower die base (22) inner wall and the lower die core (23) outer wall form a cavity (3) for manufacturing a solid tire therebetween, and the upper die body (1) is provided with a glue injection hole (14) which is in communication with the cavity (3) and penetrates through the upper die body (1); the connecting surfaces of the upper die shell (11) and the upper die base (12) and the connecting surfaces of the lower die shell (21) and the lower die base (22) which are close to each other are provided with mutually matched exhaust grooves (4), the exhaust grooves (4) are circumferentially arranged, a plurality of exhaust grooves (4) are arranged, and the two ends of the exhaust grooves (4) are respectively in communication with the cavity (3) and the outside of the mold; the upper die shell (11) and the lower die shell (21) are respectively provided with fine adjustment assemblies (5) for adjusting the size of the corresponding exhaust grooves (4); the upper die core (13) and the lower die core (23) are respectively provided with core holes (7) on the sides close to each other, a plurality of spoke grooves (71) which are matched with the spokes of the hub are circumferentially arranged on the end face of the side close to each other of the upper die core (13) and the lower die core (23), the spoke grooves (71) are in communication with the core holes (7) and the cavity (3), and the core hole (7) of the lower die core (23) is provided with a limiting assembly (8) for limiting the hub; The bottom of the exhaust groove (4) on the horizontal plane of the upper die shell (11) and the lower die shell (21) is provided with an adjusting groove (51) which is in communication therewith, an adjusting piece (52) is vertically and slidingly installed in the adjusting groove (51), and a rod groove (531) which is vertically arranged and in communication with the adjusting groove (51) is respectively arranged in the upper die shell (11) and the lower die shell (21); the fine adjustment assembly (5) comprises an adjusting rod (53) which is fixedly and rotationally installed in the rod groove (531) and is threadedly connected with the adjusting piece (52), one end of the adjusting rod (53) away from the corresponding adjusting piece (52) respectively extends out of the end face of the upper die shell (11) and the lower die shell (21) away from the exhaust groove (4), and a fine adjustment gear (54) is fixed to the one end; an adjusting gear (55) which is coaxially arranged with the upper die shell (11) and the lower die shell (21) is fixedly and rotationally installed on the upper end of the upper die shell (11) and the lower end of the lower die shell (21), respectively, and the adjusting gear (55) is externally meshed with a plurality of fine adjustment gears (54) which are correspondingly arranged around the circumference thereof.

2. A two-part mold for manufacturing a solid tire without air holes according to claim 1, characterized in that: An external gear (56) which is coaxially and integrally arranged with the adjusting gear (55) is arranged on the outside of the adjusting gear (55), and a drive gear (57) which is located on the outside of the corresponding external gear (56) is fixedly and rotationally installed on the upper die shell (11) and the lower die shell (21), respectively, and the drive gear (57) is externally meshed with the corresponding external gear (56).

3. A solid tyre two-part mould of the type without blowholes according to claim 2, characterised in that: The upper die shell (11) and the lower die shell (21) are provided with accommodating cavities (6), and the fine adjustment gear (54), the adjusting gear (55), the external gear (56) and the driving gear (57) are located in the corresponding accommodating cavities (6); the upper end surface of the upper die shell (11) and the lower end surface of the lower die shell (21) are respectively provided with adjusting holes (62) in communication with the corresponding accommodating cavities (6), and the adjusting holes (62) are coaxially arranged with the corresponding driving gears (57).

4. A solid tyre two-part mould of the type without blowholes according to claim 1, characterised in that: The lower end surface of the upper die seat (12) is provided with a glue discharging port (41) in communication with the cavity (3), the glue discharging port (41) is in the shape of a water drop, and the end in communication with the cavity (3) is small; the end of the glue discharging port (41) away from the cavity (3) is provided with a glue discharging groove (42) in communication therewith and penetrating through the side wall of the upper die seat (12), and the glue discharging port (41) and the glue discharging groove (42) are both circumferentially arranged with a plurality of glue discharging ports.

5. A solid tyre two-part mould of the type without blowholes according to claim 2, characterised in that: The limiting assembly (8) comprises a bottom disc (81) rotationally arranged in the core hole (7) of the lower die core (23), a plurality of vertical standing rods (82) are circumferentially arranged on the bottom disc (81), and a plurality of the standing rods (82) are arranged at intervals with a plurality of spoke grooves (71); the top of the standing rod (82) is provided with a limiting block (83) located between adjacent spoke grooves (71), and the limiting block (83) and the standing rod (82) form an L-shaped structure with the opening downward; the rotating shaft of the adjusting gear (55) is hollow to form a shaft hole, the bottom of the bottom disc (81) is fixedly provided with a vertical limiting shaft (84), the limiting shaft (84) is located in the shaft hole of the adjusting gear (55), and the outer diameter of the limiting shaft (84) is smaller than the inner diameter of the shaft hole of the adjusting gear (55).

6. A solid tyre two-part mould of the type without blowholes according to claim 5, characterised in that: The lower end surface of the limiting block (83) is in the shape of an inwardly curved arc surface structure, and an elastic protective layer (831) is arranged on the arc surface structure.

7. A solid tyre two-part mould of the type without blowholes according to claim 1, characterised in that: The outer wall of the upper die shell (11) and the lower die shell (21) is rotationally arranged with a positioning ring (9) coaxial therewith, and the side of the two positioning rings (9) close to each other is symmetrically provided with an L-shaped hook (91), and a plurality of L-shaped hooks (91) are circumferentially arranged; a plurality of hook blocks (10) are circumferentially arranged on the outer wall of the upper die seat (12) and the lower die seat (22), and the side wall of the hook block (10) is provided with a hook groove (101) matched with the L-shaped hook (91).

8. A solid tyre two-part mould of the type defined in claim 7, characterised in that: The end surface of the positioning ring (9) away from the L-shaped hook (91) is provided with a clamping column (92), the outer wall of the upper die shell (11) and the lower die shell (21) is rotationally arranged with a clamping plate (93), and the rotating axis of the clamping plate (93) is horizontally arranged; the clamping plate (93) is provided with a clamping hole (931) matched with the clamping column (92), and when the L-shaped hook (91) is located in the hook groove (101), the clamping column (92) penetrates through the clamping hole (931) on the corresponding clamping plate (93).

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