Internal linkage mechanism and tire vulcanization mold

Abstract

This invention relates to the field of tire vulcanization technology, and in particular to an internal kinking mechanism and a tire vulcanization mold. The internal kinking mechanism includes a base, a drive mechanism, and multiple elastic support members. The base is provided with multiple first kinking blocks and multiple second kinking blocks arranged alternately in a ring structure. Each first kinking block and each second kinking block is radially movable on the base along the ring structure. Each elastic support member is arranged in a divergent manner on the base, and each elastic support member corresponds to each second kinking block and is used to elastically support each second kinking block. Each annular edge of the first kinking block is provided with a first guide surface. Each power output end of the drive mechanism can drive each first kinking block to move inward toward the inner side of the ring structure, causing the first guide surface to press against each second kinking block, so that each second kinking block presses against each elastic support member inward toward the ring structure, avoiding interference between the kinking blocks during movement, and having low requirements for the installation and transmission accuracy of the drive mechanism.

Description

Technical Field

[0001] This invention relates to the field of tire vulcanization technology, and in particular to an internal kinetic mechanism and a tire vulcanization mold. Background Technology

[0002] Tire vulcanization requires the use of a tire vulcanization mold, which needs to be equipped with an internal flexible mechanism. The internal flexible mechanism includes multiple flexible blocks arranged in a ring structure. The ring structure formed by each flexible block is used to support the inner side of the tire, which is ring-shaped, to prevent the inner side of the tire from deforming during the vulcanization process.

[0003] To facilitate the smooth placement of the tire to be vulcanized on the outside of the annular structure and to facilitate the removal of the vulcanized tire from the outside of the annular structure for demolding, the inner connecting mechanism also includes a driving mechanism for driving each connecting block to move radially along the annular structure. Before the tire to be vulcanized is placed on the annular structure, the driving mechanism drives each connecting block to move towards the center of the annular structure, causing the inner connecting mechanism to be in a contracted state. When the inner connecting mechanism is in a contracted state, the outer diameter of the annular structure is smaller, which facilitates the placement of the vulcanized tire. After the vulcanized tire is placed on the outside of the annular structure, the driving mechanism drives each connecting block to move away from the center of the annular structure, causing the inner connecting mechanism to be in an expanded state. When the inner connecting mechanism is in an expanded state, the outer diameter of the annular structure is larger, thereby allowing the annular structure to support the inner side of the tire to be vulcanized.

[0004] To ensure the molding effect of the tire to be vulcanized, the annular structure needs to be closed on all sides when the inner movable mechanism is in the expanded state. Currently, multiple drive mechanisms are set up to drive each movable block to move in a staggered sequence to achieve the switching between the expanded and contracted states of the annular structure. This requires high installation and transmission accuracy of each drive mechanism, and the movable blocks are prone to jamming and interference. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that: at present, multiple driving mechanisms are required to drive each movable block to move sequentially and in a staggered manner, which requires high installation and transmission accuracy of each driving mechanism, and the movable blocks are prone to jamming and interference during the movement process.

[0006] To address the aforementioned technical problems, the present invention aims to provide an internally movable mechanism, comprising:

[0007] A base, on which are provided a plurality of first movable blocks and a plurality of second movable blocks, wherein each of the first movable blocks and each of the second movable blocks are arranged alternately in a ring structure, and each of the first movable blocks and each of the second movable blocks are radially movable on the base along the ring structure;

[0008] Multiple elastic support members are arranged in a radiating manner on the base. Each elastic support member corresponds to each of the second movable blocks and is used to elastically support each of the second movable blocks to the outside of the annular structure.

[0009] A drive mechanism having a plurality of power output ends corresponding one-to-one with each of the first movable blocks, the drive mechanism being used to drive each of the first movable blocks to move radially along the annular structure;

[0010] Each of the first movable blocks has a first guide surface on its annular edge. The driving mechanism can drive each of the first movable blocks to move towards the inside of the annular structure, causing the first guide surface to press against each of the second movable blocks, so that each of the second movable blocks presses against each of the elastic support members towards the inside of the annular structure.

[0011] As a preferred embodiment, the driving mechanism includes a push rod and a telescopic driving device. The push rod is coaxially arranged with the annular structure. The periphery of the push rod is hinged with a plurality of first connecting rods that swing up and down. The end of each first connecting rod away from the push rod is respectively hinged to the inner side of each first movable block.

[0012] The telescopic drive device is fixed to the base. The telescopic drive device drives the push rod to move up and down, so that the push rod drives each of the first connecting rods to swing up and down, so that each of the first connecting rods drives each of the first movable blocks to move.

[0013] As a preferred embodiment, each of the elastic support members includes an elastic element and a baffle. Each baffle is connected to the base and is arranged at intervals with each of the second movable blocks. One end of each elastic element abuts against the inner side of each of the second movable blocks, and the other end of each elastic element abuts against each of the baffles.

[0014] As a preferred embodiment, each of the baffles is radially slidably guided and connected to the base along the annular structure. The internal flexible mechanism includes a plurality of second links. Each of the second links and each of the first links are arranged sequentially at intervals along the circumference of the push rod. One end of each of the second links is hinged to the circumference of the push rod by swinging up and down, and the other end of each of the second links is respectively hinged to each of the baffles.

[0015] The tilting direction of each second link is the same as the tilting direction of each first link.

[0016] As a preferred embodiment, each of the second links is a telescopic rod.

[0017] As a preferred embodiment, each of the baffles is provided with a mounting hole arranged radially along the annular structure, and each of the mounting holes is provided with an adjusting member that can move axially along the mounting hole. The end of each elastic member away from each of the second movable blocks abuts against each of the adjusting members.

[0018] As a preferred embodiment, each of the elastic elements is a compression spring, and a guide post is fixed to the inner side of each of the second movable blocks, with each compression spring respectively sleeved on the outer side of each guide post.

[0019] Each of the mounting holes is a threaded hole, each of the adjusting components is an adjusting bolt with a guide hole, each of the adjusting bolts is installed in each of the threaded holes, each of the guide posts is inserted into each of the guide holes, and the end of each compression spring away from each of the second movable blocks abuts against the end of each of the adjusting bolts.

[0020] As a preferred embodiment, each of the first connecting rods is a telescopic rod.

[0021] A tire vulcanizing mold includes the aforementioned inner connecting mechanism and a mounting cylinder coaxially arranged with the annular structure of the inner connecting mechanism. The inner side of the mounting cylinder is provided with a plurality of guide structures arranged circumferentially around the mounting cylinder. Each guide structure forms a truncated cone structure with one end larger facing the annular structure and the other end smaller away from the annular structure. Each guide structure is slidably connected to an outer connecting block. The inner side of each outer connecting block forms an annular structure for covering the annular structure.

[0022] As a preferred embodiment, the mounting cylinder is provided with a heating chamber.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] The internal activating mechanism of the present invention comprises a plurality of first activating blocks and a plurality of second activating blocks arranged in a ring at intervals. Each first activating block is connected to a power output end of a drive mechanism, and each second activating block is connected to a base via an elastic support member. During state switching, the drive mechanism drives each first activating block to move radially, while each second activating block moves passively under the push of the first activating blocks. Since the second activating blocks are not directly driven by the drive mechanism, and each second activating block is connected to the base via an elastic support member, the second activating blocks can overcome the elastic force of the elastic support member and move towards the inner side of the ring structure under the pushing action of the first activating blocks, thus offsetting from each first activating block radially along the ring structure. This reduces the requirements for the installation accuracy and transmission accuracy of the drive mechanism and prevents jamming or interference between the first and second activating blocks. Attached Figure Description

[0025] Figure 1This is an isometric view of the internal activating mechanism of the present invention;

[0026] Figure 2 This is a top view of the internal flexible mechanism of the present invention;

[0027] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0028] Figure 4 This is a schematic diagram showing the positional relationship between the first and second movable blocks after the internal movable mechanism switches to the contracted state.

[0029] Figure 5 This is a schematic diagram of the connection structure between the first movable block and the push rod.

[0030] Figure 6 This is a schematic diagram of the connection structure between the second movable block and the push rod.

[0031] Figure 7 This is a schematic diagram of the structure of a tire vulcanization mold;

[0032] In the figure, 1 is the base, 11 is the through hole, 12 is the support beam, 13 is the guide groove, 21 is the first movable block, 211 is the first guide surface, 22 is the second movable block, 221 is the second guide surface, 3 is the elastic top support, 31 is the elastic element, 32 is the baffle, 33 is the adjusting element, 34 is the guide column, 41 is the push rod, 411 is the push rod body, 412 is the mounting plate, 42 is the telescopic drive device, 51 is the first connecting rod, 52 is the second connecting rod, 6 is the mounting cylinder, and 7 is the outer movable block. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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 the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0035] like Figures 1 to 6As shown, a preferred embodiment of the internal flexible mechanism of the present invention includes:

[0036] The base 1 is provided with a plurality of first movable blocks 21 and a plurality of second movable blocks 22. Each first movable block 21 and each second movable block 22 is arranged alternately in a ring structure. Each first movable block 21 and each second movable block 22 is radially movable on the base 1 along the ring structure.

[0037] Multiple elastic support members 3 are arranged in a radial pattern on the base 1. Each elastic support member 3 corresponds to each second movable block 32 and is used to elastically support each second movable block 22 respectively.

[0038] The drive mechanism has multiple power output ends that correspond one-to-one with each of the first movable blocks 21. Each power output end is used to drive each of the first movable blocks 21 to move radially along the annular structure.

[0039] Each of the first movable blocks 21 has a first guide surface 211 on its annular edge. The driving mechanism can drive each of the first movable blocks 21 to move towards the inside of the annular structure, thereby causing the first guide surface 211 to press against each of the second movable blocks 22, so that each of the second movable blocks 22 presses against each of the elastic support members 3 towards the inside of the annular structure.

[0040] Specifically, the base 1 is provided with a plurality of guide grooves 13 arranged circumferentially and evenly around the annular structure. Each guide groove 13 extends radially along the annular structure and is a T-shaped groove. The lower end of each first movable block 21 and each second movable block 22 is provided with a T-shaped slider, and each T-shaped slider is respectively set in each T-shaped groove.

[0041] When the inner movable mechanism needs to be switched from an expanded state to a contracted state, each power output end of the drive mechanism drives each first movable block 21 to move synchronously towards the inner side of the annular structure. At the same time, the circumferential spacing between two adjacent first movable blocks 21 decreases, and each first guide surface 211 pushes each second movable block 22 towards the inner side of the annular structure. Under the pushing force of the first guide surface 211, each elastic support member 3 is compressed and shortened, thereby causing each second movable block 22 and each first movable block 21 to be radially misaligned in the annular structure. The arrangement of each second movable block 22 and each first movable block 21 in the radially misaligned annular structure is as follows. Figure 4As shown, to avoid interference between the second movable blocks 22 and the first movable blocks 21 in the circumferential direction of the annular structure, when the inner movable mechanism needs to be switched from the contracted state to the expanded state, the driving mechanism drives the first movable blocks 21 to move synchronously to the outside of the annular structure. The circumferential spacing between two adjacent first movable blocks 21 in the annular structure increases. At this time, under the action of the elastic supporting force applied by each elastic supporting member 3, each second movable block 22 moves to the outside of the annular structure and fills the space between two adjacent first movable blocks 21, so that the annular structure forms a closed shape. The inner movable mechanism of the present invention can prevent jamming and interference between the first movable blocks and the second movable blocks, and reduce the requirements for the installation accuracy and transmission accuracy of the driving mechanism.

[0042] There are various ways to implement the drive mechanism, such as using a multi-jaw chuck structure used on a lathe, where each first movable block 21 is connected to the jaws of the multi-jaw chuck; in this embodiment, the drive mechanism includes a push rod 41 and a telescopic drive device 42. The push rod 41 is coaxially arranged with the annular structure, and multiple first connecting rods 51 are hinged to the periphery of the push rod 41. The end of each first connecting rod 51 away from the push rod 41 is respectively hinged to the inner side of each first movable block 21.

[0043] The telescopic drive device 42 is fixed to the base 1. The telescopic drive device 42 drives the push rod 41 to move up and down, so that the push rod 41 drives each first connecting rod 51 to swing up and down, so that each first connecting rod 51 drives each first movable block 21 to move radially along the annular structure.

[0044] Specifically, the telescopic drive device 42 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod 41. To facilitate maintenance of the various components within the annular structure, in this embodiment, the base 1 has a through hole 11 arranged coaxially with the annular structure in its middle. A support beam 12 is provided at the bottom of the base 1. One end of the support beam 12 is fixed to one side of the through hole 11, and the other end of the support beam 12 is fixed to the other side of the through hole 11. The telescopic drive device 42 is fixed to the lower end of the support beam 12. The lower end of the push rod 41 passes through the support beam 12 and is fixed to the telescopic shaft of the telescopic drive device 42. The upper end extends into the annular structure, and each first connecting rod 51 is arranged at an angle. The push rod 41 is driven to move up and down by the telescopic drive device 42, which can change the tilt angle of each first connecting rod 51, thereby changing the horizontal distance between the end of each first connecting rod 51 away from the push rod 41 and the push rod 41. This achieves the adjustment of the radial position of each first movable block 21 in the annular structure. The radial position of each first movable block 21 can be synchronously adjusted by the push rod 41 driving each first connecting rod 51 to swing. This makes the internal movable mechanism structure of the present invention reliable and easy to maintain.

[0045] Each elastic support member 3 includes an elastic member 31 and a baffle 32. Each baffle 32 is connected to the base 1. Each baffle 32 is arranged at intervals with each second movable block 22. One end of each elastic member 31 abuts against the inner side of each second movable block 22, and the other end of each elastic member 31 abuts against each baffle 32.

[0046] Specifically, the lower end of each first baffle 32 is connected to the inner side of the through hole 11, and the upper end of each first baffle 32 extends into the annular cavity of the annular structure and is arranged at intervals relative to each second movable block 22 along the radial direction of the annular structure. The baffle 32 can apply a reaction force to the elastic member 31 so that the elastic member 31 remains in a compressed state, thereby supporting the second movable block 22.

[0047] When the inner flexible mechanism is in the expanded state, the greater the elastic supporting force of each elastic element 31 on each second flexible block 22, the more advantageous it is to maintain a stable closed ring with the annular structure. When the inner flexible mechanism switches from the expanded state to the contracted state, the smaller the elastic supporting force of each elastic element 31 on each second flexible block 22, the more advantageous it is for each first flexible block 21 to push each second flexible block 22 into the annular structure, realizing the radial misalignment between each first flexible block 21 and each second flexible block 22 in the annular structure, which facilitates switching the inner flexible mechanism to the contracted state; in this embodiment, as Figure 3 As shown, each baffle 32 is radially slidably connected to the base 1 along the annular structure. The inner movable mechanism includes multiple second connecting rods 52. Each second connecting rod 52 and each first connecting rod 51 are arranged sequentially at intervals along the circumference of the push rod 41. One end of each second connecting rod 52 is hinged to the circumference of the push rod 41, and the other end of each second connecting rod 52 is hinged to each baffle 32. Specifically, in this embodiment, the end of the first connecting rod 51 connected to the push rod 41 and the end of the second connecting rod 52 connected to the push rod 41 are both inclined upwards. While the push rod 41 drives the first connecting rod 51 to move each first movable block 21 toward the center of the annular structure, the second connecting rod 52 also drives the baffle 32 to move toward the center of the annular structure. The movement of baffle 32 toward the center of the annular structure increases the distance between baffle 32 and the second movable block 22, thereby reducing the compression of elastic element 31 and the elastic support force exerted by elastic element 31 on the second movable block 22, making it easier to switch the inner movable mechanism from the expansion state to the contraction state. When the inner movable mechanism is switched from the contraction state to the expansion state, push rod 41 drives the first connecting rod 51 to move each first movable block 21 away from the center of the annular structure. At the same time, the second connecting rod 52 drives baffle 32 to move away from the center of the annular structure, thereby increasing the compression of elastic element 31 and increasing the elastic support force exerted by elastic element 31 on the second movable block 22.

[0048] Furthermore, to facilitate adjustment of the supporting force exerted by the elastic element 31 on the second movable block 22 when the inner movable mechanism is in the expanded state, in this embodiment, each of the second connecting rods 52 is a telescopic rod. In this embodiment, to avoid interference between the second connecting rod 52 and the first connecting rod 51, the connection positions of the first connecting rod 51 and the push rod 41 and the second connecting rod 52 and the push rod 41 are staggered vertically. Furthermore, the push rod 41 includes a push rod body 411 and a mounting plate 412 fixed to the upper end of the push rod body 411. The mounting plate 412 is circular, coaxial with the push rod 41, and its diameter is larger than that of the push rod 41. The second connecting rod 52 is hinged to the outside of the mounting plate 412, further preventing interference between the first connecting rod 51 and the second connecting rod 52.

[0049] Since the elastic force of each elastic element 31 decreases after prolonged use, in order to maintain the stability of the elastic force of the elastic element 31 on the second movable block 22, in this embodiment, each baffle 32 is provided with a mounting hole arranged radially along the annular structure, and each mounting hole is provided with an adjusting element 33 that can move axially along the mounting hole. The end of each elastic element 31 away from each second movable block 22 abuts against each adjusting element 33. After the elastic force of the elastic element 31 decreases, moving the adjusting element 33 radially away from the center of the annular structure can increase the pre-compression of the elastic element 31, thereby realizing the adjustment of the elastic force of the elastic element 31.

[0050] Specifically, each elastic element 31 is a compression spring, and a guide post 34 is fixed to the inner side of each second movable block 22. Each compression spring is sleeved on the outer side of each guide post 34. Each mounting hole is a threaded hole, and each adjusting element 33 is an adjusting bolt with a guide hole. Each adjusting bolt is installed in the threaded hole, and each guide post 34 is inserted into the guide hole. The end of each compression spring away from each second movable block 22 abuts against the end of each adjusting bolt. The guide post 34 ensures the stability of the compression spring and prevents bending during operation. The preload of the compression spring can be adjusted by rotating the adjusting bolt. In other embodiments of the present invention, the elastic element 31 can be a rubber sleeve sleeved on the outer side of the guide post 34.

[0051] In this embodiment, in order to facilitate the adjustment of the position of each first movable block 21 and to compensate for the positional differences of each first movable block 21 caused by the machining error of the first movable block 21 and the first connecting rod 51, each first connecting rod 51 is a telescopic rod; specifically, in this embodiment, the telescopic rod is a threaded telescopic rod.

[0052] In this embodiment, to ensure that each second movable block 22 can move smoothly toward the center of the annular structure when the inner movable mechanism is switched to the contracted state, and to ensure that the second movable block 22 and the first movable block 21 are radially misaligned in the annular structure, the first guide surface 211 is an inclined surface that is inclined toward the center of the annular structure. The annular edge of the second movable block 22 opposite to the first guide surface 211 is provided with a second guide surface 221. The second guide surface 221 is an inclined surface that is inclined toward the outside of the annular structure, and the normal of the second guide surface 221 is opposite to the normal of the first guide surface 211. A driving mechanism drives each first movable block 21 to move synchronously towards the center of the annular structure. The interval between two adjacent first movable blocks 21 decreases along the circumferential direction of the annular structure. Each first guide surface 211 presses against each second guide surface, pushing each second movable block 22 towards the center of the annular structure. This causes each second movable block 22 to be radially misaligned with each first movable block 21 in the annular structure, avoiding interference between the second movable blocks 22 and the first movable blocks 21 in the circumferential direction of the annular structure. In other embodiments of the present invention, the first guide surface and the second guide surface can be arc-shaped surfaces.

[0053] An embodiment of a tire vulcanizing mold, such as Figure 7 As shown, the device includes the aforementioned inner movable mechanism and a mounting cylinder 6 arranged coaxially with the annular structure. The inner side of the mounting cylinder 6 is provided with multiple guide structures arranged circumferentially around the mounting cylinder 6. Each guide structure forms a frustoconical structure, larger at one end facing the annular structure and smaller at the other end away from the annular structure. Each guide structure is slidably connected to an outer movable block 7. The inner side of each outer movable block 7 forms an annular structure for covering the annular structure. Specifically, each outer movable block 7 can slide downwards under gravity, causing the outer movable mechanism to be in an expanded state. The mounting cylinder 6 moves downwards, and after the lower end of each outer movable block 7 abuts against the upper end of the base 1, the mounting cylinder 6 continues to be pressed down, causing each outer movable block 7 to move upwards relative to the mounting cylinder 6. Under the action of the frustoconical structure, each inner movable block moves closer to each other circumferentially along the annular structure, causing the outer movable mechanism to switch to a contracted state.

[0054] To facilitate the heating and vulcanization of the tire inside the tire vulcanization mold, in this embodiment, a heating chamber is provided inside the mounting cylinder 6.

[0055] In summary, the internal activating mechanism of the present invention includes a base 1, a driving mechanism, and multiple elastic support members 3. The base 1 is provided with multiple first activating blocks 21 and multiple second activating blocks 22. Each first activating block 21 and each second activating block 22 is arranged alternately in a ring structure. Each first activating block 21 and each second activating block 22 is radially slidably guided and connected to the base 1 along the ring structure. Each annular edge of the first activating block 21 is provided with a first guiding surface 211. Each elastic support member 3 is located in the annular cavity of the ring structure and connected to the base 1, with each elastic support member 3 corresponding to the previous one. Each of the second movable blocks 22 is elastically supported by a drive mechanism. The drive mechanism has multiple power output ends corresponding to each of the first movable blocks 21. Each power output end is used to drive each first movable block 21 to move radially along the annular structure. When the inner movable mechanism needs to be switched from an expanded state to a contracted state, the power output ends of the drive mechanism drive each first movable block 21 to move synchronously towards the inner side of the annular structure. The circumferential spacing between two adjacent first movable blocks 21 decreases, and each first guide surface 211 pushes towards the center of the annular structure. Under the pushing force of the first guide surface 211, the second movable block 22 compresses and shortens each elastic support member 3, thereby causing each second movable block 22 and each first movable block 21 to be radially misaligned in the annular structure, avoiding interference between each second movable block 22 and each first movable block 21 in the circumferential direction of the annular structure; when it is necessary to switch the inner movable mechanism from the contracted state to the expanded state, the power output ends of the drive mechanism drive each first movable block 21 to move synchronously to the outside of the annular structure, increasing the circumferential spacing between two adjacent first movable blocks 21 in the annular structure. Under the elastic support force applied by each elastic support member 3, each second movable block 22 moves to the outside of each first movable block 21 along with each first movable block 31 until each first movable block 31 moves into place. Then, under the elastic support force of each elastic support member 3, each second movable block fills between two adjacent first movable blocks 21, so that the annular structure forms a closed ring. The inner movable mechanism of the present invention can prevent jamming and interference between each first movable block 31 and each second movable block 32, and also reduces the requirements for the installation accuracy and transmission accuracy of the drive mechanism.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An internally movable mechanism, characterized in that, include: The base (1) is provided with a plurality of first movable blocks (21) and a plurality of second movable blocks (22). Each first movable block (21) and each second movable block (22) are arranged alternately in a ring structure. Each first movable block (21) and each second movable block (22) are radially moved on the base (1) along the ring structure. Multiple elastic support members (3) are arranged in a radial pattern on the base (1). Each elastic support member (3) corresponds to each of the second movable blocks (22) and is used to elastically support each of the second movable blocks (22). The driving mechanism has a plurality of power output ends corresponding one-to-one with each of the first movable blocks (21), and each of the power output ends is used to drive each of the first movable blocks (21) to move radially along the annular structure. Each of the first movable blocks (21) has a first guide surface (211) on its annular edge. The driving mechanism can drive each of the first movable blocks (21) to move radially toward the inner side of the annular structure, thereby causing the first guide surface (211) to press each of the second movable blocks (22) so that each of the second movable blocks (22) presses each of the elastic support members toward the inner side of the annular structure. The driving mechanism includes a push rod (41) and a telescopic driving device (42). The push rod (41) is coaxially arranged with the annular structure. Multiple first connecting rods (51) are hinged to the periphery of the push rod (41) by swinging up and down. The end of each first connecting rod (51) away from the push rod (41) is respectively hinged to the inner side of each first movable block (21). The telescopic drive device (42) is fixed to the base (1). The telescopic drive device (42) drives the push rod (41) to move up and down, so that the push rod (41) drives each of the first connecting rods (51) to swing up and down, so that each of the first connecting rods (51) drives each of the first movable blocks (21) to move radially along the annular structure. Each of the elastic support members (3) includes an elastic member (31) and a baffle (32). Each baffle (32) is connected to the base (1). Each baffle (32) is arranged radially at intervals with each of the second movable blocks (22) along the annular structure. One end of each elastic member (31) abuts against the inner side of each of the second movable blocks (22), and the other end of each elastic member (31) abuts against each of the baffles (32). Each of the baffles (32) is radially slidably guided and connected to the base (1) along the annular structure. The inner movable mechanism includes a plurality of second connecting rods (52). Each of the second connecting rods (52) and each of the first connecting rods (51) are arranged sequentially at intervals along the circumference of the push rod (41). One end of each of the second connecting rods (52) is hinged to the circumference of the push rod (41) by swinging up and down. The other end of each of the second connecting rods (52) is hinged to each of the baffles (32). The tilting direction of each second link (52) is the same as the tilting direction of each first link (51).

2. The internal flexible mechanism according to claim 1, characterized in that, Each of the second links (52) is a telescopic rod.

3. The internal flexible mechanism according to claim 1, characterized in that, Each of the baffles (32) is provided with a mounting hole arranged radially along the annular structure. Each of the mounting holes is provided with an adjusting member (33) that can move axially along the mounting hole. The end of each elastic member (31) away from each of the second movable blocks (22) abuts against each of the adjusting members (33).

4. The internal flexible mechanism according to claim 3, characterized in that, Each of the elastic elements (31) is a compression spring, and each of the second movable blocks (22) has a guide post (34) fixed on its inner side. Each of the compression springs is respectively sleeved on the outer side of each of the guide posts (34). Each of the mounting holes is a threaded hole, each of the adjusting components (33) is an adjusting bolt with a guide hole, each of the adjusting bolts is installed in each of the threaded holes, each of the guide pins (34) is inserted in each of the guide holes, and the end of each compression spring away from each of the second movable blocks (22) abuts against the end of each of the adjusting bolts.

5. The internal flexible mechanism according to claim 1, characterized in that, Each of the first connecting rods (51) is a telescopic rod.

6. A tire vulcanizing mold, characterized in that, The device includes the internal activating mechanism as described in any one of claims 1 to 5 and an mounting cylinder (6) arranged coaxially with the annular structure of the internal activating mechanism. The inner side of the mounting cylinder (6) is provided with a plurality of guide structures arranged circumferentially around the mounting cylinder (6). Each guide structure forms a truncated cone structure with one end larger facing the annular structure and the other end smaller away from the annular structure. Each guide structure is slidably connected to an outer activating block (7). The inner side of each outer activating block (7) forms an annular structure for covering the annular structure.

7. The tire vulcanizing mold according to claim 6, characterized in that, The mounting cylinder (6) is provided with a heating chamber.

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