A tire vulcanization inner cavity mold quick disassembly and assembly structure

Abstract

The invention discloses a quick disassembly and assembly structure of a tire vulcanization inner cavity mold, which belongs to the technical field of tire vulcanization equipment, and comprises a rigid inner mold with an inner mold component and a support component, wherein the inner mold component comprises a plurality of submodules, a connecting block is provided on the submodule, a first positioning portion, a second positioning portion and a first limiting surface are provided on the connecting block, and a first guiding surface is provided on the first positioning portion; the supporting component comprises a plurality of supporting blocks, a third positioning portion, a fourth positioning portion and a second limiting surface are provided on the supporting block; a second guiding surface is provided on the third positioning portion; the first positioning portion cooperates with the third positioning portion to be positioned in the second direction, and the second positioning portion completes cooperation with the fourth positioning portion and is positioned in the first direction through the fifth positioning portion; the invention guides the movement of the submodule through the guiding surface, and positions the submodule and the support block through the limiting surface, so as to ensure the precise cooperation position and the precision of the circular arrangement; the connection or disassembly process between the inner mold component and the support component is simple, fast and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of tire vulcanization equipment, and in particular to a quick disassembly and assembly structure of a tire vulcanization inner cavity mold. Background Art

[0002] In recent years, in order to improve the performance of tires, it has been proposed to use rigid inner molds to shape the inner contour of the tire. Compared with tires vulcanized by bladder vulcanization, the inner contour of tires vulcanized by rigid inner molds is closer to the design contour, which greatly improves the performance of the tire.

[0003] The rigid inner mold is usually a block-type structure. During use, each inner module needs to open and close. Therefore, at least some of the inner modules need to be connected to the driving mechanism to achieve opening and closing. At the same time, when adjusting the specifications of the rigid inner mold or repairing the rigid inner mold, it is often necessary to remove the inner module from the driving mechanism, that is, the inner module has regular installation and disassembly requirements.

[0004] At present, the installation and disassembly process of the inner module is relatively cumbersome, which will seriously occupy the machine time and affect the tire vulcanization production efficiency; specifically, taking patent CN217144981U as an example, the inner module is fixed on the supporting structure. When disassembling the inner module, it is necessary to first remove the connecting screws between the inner module and the supporting structure. Since the inner module is installed on the vulcanizing machine and the screws are located on the inner side of the inner module, it is very inconvenient for the workers to operate, and the installation and disassembly of the connecting screws are quite time-consuming; and, while removing the connecting screws, multiple people are required to cooperate to fix the inner mold in advance, otherwise, the inner module will fall off the supporting structure during the disassembly process, which may cause personal safety damage or mold precision damage.

[0005] Therefore, it is an urgent problem to be solved at this stage to develop and design a quick disassembly structure that can quickly install or disassemble the rigid inner mold and the vulcanizing machine while ensuring the roundness of the inner mold when in use, and has a more convenient operation process. Summary of the invention

[0006] In response to the problems existing in the prior art, the present invention provides a quick disassembly and assembly structure of a tire vulcanization inner cavity mold, in which a first positioning portion on a connecting block matches a third positioning portion on a supporting block, and through the matching first guide surface and the second guide surface, the submodule can be guided to move relative to the supporting block, and through the matching first limiting surface and the second limiting surface, the submodule and the supporting block can be positioned in the first direction while ensuring accurate matching position and circularity; and after the first positioning portion and the third positioning portion are matched, the second positioning portion on the connecting block matches the fourth positioning portion on the supporting block, and the submodule and the supporting block are positioned in the second direction through the fifth positioning portion, and the connection or disassembly process between the inner mold assembly and the supporting assembly is simple, fast and convenient, which saves the time occupied by the vulcanization machine, improves the tire vulcanization production efficiency, and avoids injuries to workers and damage to the submodules due to bumps.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] The present invention provides a tire vulcanization inner cavity mold quick disassembly and assembly structure, comprising a rigid inner mold, wherein the rigid inner mold comprises:

[0009] An inner mold assembly, the inner mold assembly comprising a plurality of circumferentially distributed submodules, the submodules being provided with a connecting block, the connecting block being provided with a first positioning portion and a second positioning portion, the first positioning portion being provided with a first guiding surface and a first limiting surface;

[0010] A support assembly, wherein the support assembly includes a support block corresponding to the connecting block one by one, the support block is provided with a third positioning portion matching the first positioning portion, a fourth positioning portion matching the second positioning portion, and a second limiting surface; the third positioning portion is provided with a second guiding surface; during the cooperation process between the first positioning portion and the third positioning portion, the first guiding surface and the second guiding surface are clearance-matched, the submodule moves along the first direction relative to the support block, and when the first limiting surface abuts against the second limiting surface, the first positioning portion and the third positioning portion complete cooperation, the submodule and the support block are positioned in the second direction, and at the same time, the second positioning portion and the fourth positioning portion complete cooperation; one of the first direction and the second direction is set as an axial direction, and the other is set as a radial direction;

[0011] The fifth positioning portion can cooperate with the second positioning portion and the fourth positioning portion respectively to position the submodule and the support block in the first direction after the second positioning portion cooperates with the fourth positioning portion.

[0012] As a preferred technical solution, one of the first positioning portion and the third positioning portion is set as a positioning hole, and the other is set as a positioning protrusion matching the positioning hole, one of the inner wall surface of the positioning hole and the outer peripheral surface of the positioning protrusion forms the first guide surface, and the other forms the second guide surface.

[0013] As a preferred technical solution, it also includes a fastening screw, and the positioning protrusion is configured as a detachable first connecting pin;

[0014] And / or, the peripheral surface of the protruding end of the positioning protrusion is set as a conical surface;

[0015] And / or, one of the first limiting surface and the second limiting surface is provided with a boss, and the other is provided with a recessed platform matching the boss.

[0016] As a preferred technical solution, the second positioning portion and the fourth positioning portion are both configured as semicircular pin holes. When the second positioning portion cooperates with the fourth positioning portion, the two semicircular pin holes are spliced ​​to form a complete pin hole; the fifth positioning portion is configured as a positioning pin, which can be inserted into the complete pin hole and cooperate with the clearance of the complete pin hole.

[0017] As a preferred technical solution, the second positioning portion and the fourth positioning portion are both configured as locking holes, and when the second positioning portion cooperates with the fourth positioning portion, the two locking holes are connected.

[0018] As a preferred technical solution, the fifth positioning portion is configured as a locking pin, and when the second positioning portion cooperates with the fourth positioning portion, the locking pin can pass through the two locking holes in sequence.

[0019] As a preferred technical solution, the inner side wall of the locking hole is provided with a receiving hole connected thereto, and a locking steel ball and a first elastic member are provided in the receiving hole. When not subject to external force, the first elastic member allows part of the locking steel ball to extend into the locking hole; the locking pin is provided with a locking groove matching the locking steel ball.

[0020] As a preferred technical solution, the fifth positioning portion is configured to be accommodated in a locking block and a second elastic member in one of the locking holes; when not subject to external force, the second elastic member causes part of the locking block to extend from the locking hole, and the extending part of the locking block has an inclined wedge surface; when the second positioning portion cooperates with the fourth positioning portion, the locking block can extend into another of the locking holes.

[0021] As a preferred technical solution, it also includes an active outer mold, and the rigid inner mold is arranged inside the active outer mold; the rigid inner mold is connected to a driving component that drives it to open and close radially.

[0022] As a preferred technical solution, the driving assembly includes an inner mold opening and closing rod, and the inner mold opening and closing rod is connected to a hydraulic cylinder that drives the inner mold opening and closing rod to move axially; a connecting rod is provided between the inner mold opening and closing rod and the support block, and the two ends of the connecting rod are respectively hinged to the inner mold opening and closing rod and the support block;

[0023] And / or, a guide rail is provided on the vulcanizing machine, a slider capable of moving along the guide rail is provided on the guide rail, and the support block is fixedly connected to the slider.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The first positioning portion on the connecting block of the present invention matches the third positioning portion on the supporting block. During the matching process, the submodule can be guided to move relative to the supporting block through the matching first guide surface and the second guide surface, and the submodule and the supporting block can be positioned in the first direction through the matching first limiting surface and the second limiting surface, while ensuring the precise matching position and the precision of the circular arrangement; and after the first positioning portion and the third positioning portion are matched, the second positioning portion on the connecting block and the fourth positioning portion on the supporting block are also matched, and the submodule and the supporting block are positioned in the second direction through the fifth positioning portion. The connection or disassembly process between the inner mold assembly and the supporting assembly is simple, fast and convenient, which saves the time occupied by the vulcanizing machine, improves the tire vulcanization production efficiency, avoids worker injuries and submodule damage due to bumps, and ensures personal and property safety.

[0026] 2. The first positioning portion and the third positioning portion of the present invention are respectively set as matching positioning holes and positioning protrusions, which can conveniently realize the matching or separation of the connecting block and the supporting block in the first direction; when the second positioning portion and the fourth positioning portion are respectively set as matching semicircular pin holes, the fifth positioning portion is set as a positioning pin; when the second positioning portion and the fourth positioning portion are respectively set as matching locking holes, the fifth positioning portion is set as a locking pin or a locking block; both can conveniently realize the matching or separation of the connecting block and the supporting block in the second direction; while ensuring the precision of the circular splicing, the rigid inner mold and the vulcanizing machine can be quickly installed, fixed or disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a first embodiment of a tire vulcanization inner cavity mold quick disassembly structure of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure of the submodules in;

[0029] Figure 3 for Figure 2 A top view of

[0030] Figure 4 for Figure 2 Bottom view of

[0031] Figure 5 for Figure 1 A front view of the support block in FIG.

[0032] Figure 6 for Figure 1 A schematic diagram of the first positioning portion and the third positioning portion in cooperation;

[0033] Figure 7 for Figure 1 A schematic diagram of the structure of the submodule and the support block during mold installation and debugging;

[0034] Figure 8 It is a schematic diagram of the first positioning part and the third positioning part in the second embodiment of the tire vulcanization inner cavity mold quick disassembly structure of the present invention when they are matched;

[0035] Fig. 9 for Figure 8 A schematic diagram of the first positioning portion and the third positioning portion after the cooperation is completed;

[0036] Fig.10 for Figure 8 A schematic diagram of the structure after the submodule in is connected to the support block;

[0037] Fig.11 It is a schematic diagram of the first positioning part and the third positioning part in the third embodiment of the quick disassembly structure of the tire vulcanization inner cavity mold of the present invention when they are matched;

[0038] Fig.12 for Fig.11 A schematic diagram of the first positioning portion and the third positioning portion after the cooperation is completed;

[0039] Fig.13 for Fig.11 A schematic diagram of the structure after the submodule in is connected to the support block;

[0040] Fig.14 It is a schematic diagram of the first positioning part and the third positioning part in the fourth embodiment of the quick disassembly structure of the tire vulcanization inner cavity mold of the present invention when they are matched;

[0041] Fig.15 for Fig.14 A schematic diagram of the first positioning portion and the third positioning portion after the cooperation is completed;

[0042] Fig.16 for Fig.14 A schematic diagram of the structure after the submodule in is connected to the support block;

[0043] Fig.17It is a schematic diagram of the first positioning part and the third positioning part in the fifth embodiment of the quick disassembly structure of the tire vulcanization inner cavity mold of the present invention when they are in cooperation;

[0044] Fig.18 for Fig.17 A schematic diagram of the structure after the submodule in is connected to the support block;

[0045] Fig.19 for Fig.18 A schematic diagram of the structure of the submodule and the support block when disassembling;

[0046] Fig. 20 It is a schematic diagram of the first positioning part and the third positioning part in the sixth embodiment of the quick disassembly structure of the tire vulcanization inner cavity mold of the present invention when they are in cooperation;

[0047] Fig.21 for Fig. 20 A schematic diagram of the structure after the submodule in is connected to the support block;

[0048] Fig. 22 for Fig.21 Schematic diagram of the structure of the submodule and the support block during disassembly.

[0049] In the figure: 1-submodule, 2-connecting block, 21-first positioning part, 22-second positioning part, 23-first guide surface, 24-first limiting surface, 3-support block, 31-third positioning part, 32-fourth positioning part, 33-second guide surface, 34-second limiting surface, 4-fifth positioning part, 41-locking block, 42-second elastic member, 43-wedge surface, 5-fastening screw, 6-accommodating hole, 61-locking steel ball, 62-first elastic member, 7-active outer mold, 81-inner mold opening and closing rod, 82-connecting rod, 9-vulcanizing machine, 91-guide rail, 92-slider. DETAILED DESCRIPTION

[0050] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings. Embodiment 1

[0051] Please refer to Figure 1-Figure 7, is an embodiment of a tire vulcanization inner cavity mold quick disassembly and assembly structure provided by the present invention, comprising a rigid inner mold, the rigid inner mold comprising an inner mold assembly and a support assembly, wherein the inner mold assembly comprises a plurality of circumferentially distributed submodules 1, the submodule 1 is provided with a connecting block 2 fixedly connected thereto, the support assembly comprises a supporting block 3 corresponding to the connecting block 2 one by one; the connecting block 2 is provided with two positioning holes, the axis of the positioning holes is parallel to the axial direction, the two positioning holes are distributed along the circumferential direction, the two positioning holes form a first positioning portion 21, the inner wall surface of the positioning hole forms a first guide surface 23, and correspondingly, two positioning protrusions matching the positioning holes are provided at corresponding positions on the support block 3 to form a third positioning portion 31, and the outer peripheral surface of the positioning protrusion forms a second guide surface 33; A first limiting surface 24 is formed on the lower surface of the connecting block 2, and a boss is provided on the first limiting surface 24; a second limiting surface 34 is formed on the upper surface of the supporting block 3 directly below the first limiting surface 24, and a sink is provided on the second limiting surface 34 that matches the shape of the boss; when the first positioning portion 21 cooperates with the third positioning portion 31, the positioning protrusion extends into the positioning hole and cooperates with the positioning hole gap, and while guiding the submodule 1 to move axially downward relative to the supporting block 3, the relative position of the submodule 1 and the supporting block 3 in the radial direction can be positioned; when the boss is embedded in the sink, and the first limiting surface 24 abuts against the second limiting surface 34, the positioning protrusion is matched with the positioning hole, and the submodule 1 is placed on the supporting block 3 and positioned in the radial direction;

[0052] Semicircular pin holes are provided on the connecting block 2 and the supporting block 3 to form a second positioning portion 22 and a fourth positioning portion 32 respectively. When the positioning protrusion cooperates with the positioning hole, the two semicircular pin holes are just spliced ​​together to form a complete pin hole. The axis of the complete pin hole is perpendicular to the axial direction. The fifth positioning portion 4 is set as a positioning pin. The positioning pin can be inserted into the complete pin hole and cooperate with the gap of the complete pin hole, so as to position the submodule 1 and the supporting block 3 in the axial direction, thereby realizing quick connection or disassembly between the inner mold assembly and the supporting assembly.

[0053] In other embodiments, the number of positioning holes may be set to other values, and the first limiting surface 24 and the second limiting surface 34 may be set to other structures, so that the submodule 1 and the support block 3 can be positioned radially when mating and the circularity accuracy can be ensured.

[0054] For further information, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 The surfaces of the connecting block 2 and the supporting block 3 where the semicircular pin holes are arranged can also form matching first guide surfaces 23 and second guide surfaces 33. When the first positioning portion 21 cooperates with the third positioning portion 31, the matching positioning holes and positioning protrusions can further improve the relative position accuracy of the submodule 1 and the supporting block 3 in the radial direction, and further improve the precision of the circular arrangement.

[0055] It should be noted that the axial direction, radial direction and circumferential direction in the present invention are based on the axial direction, radial direction and circumferential direction of the rigid inner mold respectively; in this embodiment, the first direction is the axial direction and the second direction is the radial direction.

[0056] In this embodiment, please refer to Figure 6 and Figure 7 The positioning protrusion is set as a first connecting pin, and the first connecting pin and the support block 3 are detachably connected by a threaded connection, which is convenient for installation and disassembly; due to the inevitable active gap in the quick connection between the connecting block 2 and the support block 3, when the relative position of the submodule 1 and the support block 3 needs to be completely fixed during the mold installation and debugging process, the first connecting pin can be removed from the support block 3, and the fastening screw 5 can be installed at the position of the first connecting pin. At this time, the positioning hole is set as a countersunk hole, and the head of the fastening screw 5 sinks into the countersunk hole, and the relative position of the connecting block 2 and the support block 3 is ensured to be reliable through the boss embedded in the sinking platform, and the relative position between the connecting block 2 and the support block 3 is completely fixed without adding workpieces.

[0057] For details, please refer to Figure 1 , Figure 2 as well as Figure 5-Figure 7 The upper end of the positioning protrusion is set as a conical surface, and correspondingly, the lower end of the positioning hole is also set as a matching conical surface, which can guide the positioning protrusion to cooperate with the positioning hole.

[0058] In this embodiment, please refer to Figure 1 The present invention also includes an active outer mold 7, a rigid inner mold is arranged inside the active outer mold 7, and the active outer mold 7 and the rigid inner mold together form a cavity for vulcanized tire; the rigid inner mold is connected to a driving component for driving its radial opening and closing, so as to facilitate the placement of the tire blank on the rigid inner mold or the removal of the vulcanized tire from the rigid inner mold.

[0059] For details, please refer to Figure 1 The driving assembly includes an inner mold opening and closing rod 81, which is connected to a hydraulic cylinder that drives its axial movement; a connecting rod 82 is provided between the inner mold opening and closing rod 81 and the support block 3, and the two ends of the connecting rod 82 are respectively hinged to the inner mold opening and closing rod 81 and the support block 3. When the support block 3 is fixedly connected to the sub-module 1, the inner mold opening and closing rod 81 moves axially, and the connecting rod 82 can drive the support block 3 and the sub-module 1 to move radially, thereby realizing the opening and closing of the rigid inner mold.

[0060] For further information, please refer to Figure 1 A guide rail 91 is provided on the vulcanizing machine 9, and a slider 92 which can move along the guide rail 91 is provided on the guide rail 91. The support block 3 is fixedly connected to the slider 92 to ensure that the support block 3 moves stably and smoothly in the radial direction.

[0061] The specific connection process of the inner mold assembly and the support assembly of the present invention is as follows:

[0062] Please refer to Figure 6 , align the two positioning holes on the connecting block 2 with the positioning protrusions on the supporting block 3, and move the inner mold assembly axially downward; when the positioning protrusions are embedded in the positioning holes, the radial position of the submodule 1 relative to the supporting block 3 can be preliminarily determined; please refer to Figure 1 When the first limiting surface 24 on the connecting block 2 abuts against the second limiting surface 34 on the supporting block 3, the positioning hole and the positioning protrusion are matched, and the semicircular pin holes on the connecting block 2 and the supporting block 3 can be spliced ​​into a complete pin hole. Inserting the positioning pin into the complete pin hole can locate the axial position of the submodule 1 relative to the supporting block 3, and complete the connection between the inner mold assembly and the supporting assembly.

[0063] Furthermore, when the inner mold assembly and the support assembly need to be disassembled, the above steps can be performed in reverse. Embodiment 2

[0064] Please refer to Figure 8-Figure 10 The difference between this embodiment and the first embodiment is that: a radially arranged positioning hole is provided on the connection block 2 to form a first positioning portion 21, and correspondingly, a positioning protrusion matching the positioning hole is provided at a corresponding position on the support block 3 to form a third positioning portion 31. When the first positioning portion 21 cooperates with the third positioning portion 31, the submodule 1 moves radially inward relative to the support block 3, so as to locate the relative position of the submodule 1 and the support block 3 in the axial direction; at the same time, the semicircular pin hole on the connection block 2 is provided on its lower surface, and the semicircular pin hole on the support block 3 is provided on its upper surface. After the two semicircular pin holes are spliced ​​to form a complete pin hole, the positioning pin is inserted into the complete pin hole, so as to locate the submodule 1 and the support block 3 in the axial direction.

[0065] In this embodiment, the first direction is the radial direction, and the second direction is the axial direction. Embodiment 3

[0066] Please refer to Figure 11-13 The main difference between this embodiment and the second embodiment is that the second positioning portion 22 and the fourth positioning portion 32 are both set as locking holes. When the second positioning portion 22 cooperates with the fourth positioning portion 32, the two locking holes are connected. At this time, the fifth positioning portion 4 is set as a locking pin, and the locking pin passes through the two locking holes in sequence to fix the submodule 1 and the support block 3.

[0067] In this embodiment, please refer to Figure 11-13The support block 3 is provided with a receiving hole 6 which is connected to the inner side wall of the locking hole. A locking steel ball 61 and a first elastic member 62 are provided in the receiving hole 6. When no external force is applied, the first elastic member 62 allows part of the locking steel ball 61 to extend into the locking hole. The locking pin is provided with a locking groove which matches the locking steel ball 61. When the locking pin is inserted into the two locking holes, the locking steel ball 61 is embedded in the locking groove, which can fix the locking pin in the locking hole and prevent the locking pin from falling out of the locking hole.

[0068] For further information, please refer to Figure 11-13 The accommodating hole 6 is set as a through hole, and an adjusting screw threadedly connected to the accommodating hole 6 is also provided in the accommodating hole 6. The two ends of the first elastic member 62 are respectively abutted against the locking steel ball 61 and the adjusting screw. When the locking pin needs to be pulled out, the adjusting screw is loosened to reduce the elastic force applied by the first elastic member 62 to the locking steel ball 61, so that the locking pin can be easily pulled out; specifically, the first elastic member 62 is preferably set as a spring.

[0069] In this embodiment, the first direction is the radial direction, and the second direction is the axial direction. Embodiment 4

[0070] Please refer to Figure 14-16 The difference between this embodiment and the third embodiment mainly lies in that the protruding part of the connecting block 2 itself forms a positioning protrusion, and the surface of the connecting block 2 away from the submodule 1 forms a first limiting surface 24. Correspondingly, a matching positioning hole is provided on the supporting block 3, and the positioning hole is a blind hole. The bottom surface of the positioning hole can form a second limiting surface 34. When the connecting block 2 is inserted into the bottom of the positioning hole, the first positioning portion 21 and the third positioning portion 31 can be matched.

[0071] In this embodiment, the first direction is the radial direction, and the second direction is the axial direction. Embodiment 5

[0072] Please refer to Figure 17-Figure 19 The difference between this embodiment and the second embodiment mainly lies in that: the fifth positioning portion 4 is arranged in the locking hole on the support block 3, and the fifth positioning portion 4 includes a locking block 41 and a second elastic member 42. When not subjected to external force, the second elastic member 42 causes part of the locking block 41 to extend from the locking hole; the extending part of the locking block 41 has an inclined wedge surface 43, which cooperates with the third positioning portion 31 in the first positioning portion 21. When the connecting block 2 moves radially inward relative to the supporting block 3, the contact between the connecting block 2 and the inclined wedge surface 43 can cause the locking block 41 to retract into the locking hole. Only when the first positioning portion 21 and the third positioning portion 31 are fully cooperated, the two locking holes are connected, and the locking block 41 can automatically extend into the locking hole on the connecting block 2 under the action of the second elastic member 42, so as to position the connecting block 2 and the supporting block 3 in the radial direction.

[0073] For clarification, please refer to Figure 17-Figure 19The connecting block 2 is preferably provided with a chamfer matching the inclined wedge surface 43. When the chamfer abuts against the inclined wedge surface 43, it can more smoothly promote the retraction of the locking block 41 into the locking hole; specifically, the angle between the inclined wedge surface 43 and the axial direction is preferably set to 45°.

[0074] Meanwhile, the cross section of the locking hole may be circular or rectangular, and the shape of the locking block 41 matches the locking hole.

[0075] For further information, please refer to Figure 17-Figure 19 A long limiting hole is provided on the part of the locking block 41 located inside the supporting block 3, and a limiting shaft is provided in the locking hole on the supporting block 3. The limiting shaft is embedded in the long limiting hole. The limiting shaft can limit the travel of the locking block 41 to prevent the locking block 41 from escaping from the locking hole on the supporting block 3.

[0076] For further information, please refer to Fig.19 The present invention should also include a locking pin, and the locking hole on the connecting block 2 is set as a through hole. When the connecting block 2 and the supporting block 3 are disassembled, the locking pin is inserted into the locking hole on the connecting block 2, so that the locking block 41 can be pushed back into the locking hole on the supporting block 3, and then the connecting block 2 can be radially moved outward to be separated from the supporting block 3; specifically, the second elastic member 42 is preferably set as a spring.

[0077] For clarification, please refer to Fig.19 In order to ensure that the locking block 41 is pushed back without interfering with the radial outward movement of the connecting block 2, the outer diameter of the locking pin can be made smaller than the inner diameter of the locking hole, that is, there is a certain gap between the locking pin and the locking hole. When the locking block 41 is pushed back, the connecting block 2 can be slightly moved radially outward so that the lower surface of the connecting block 2 presses the locking block 41, and then the locking pin is pulled out. The connecting block 2 continues to move radially outward to be separated from the supporting block 3. Furthermore, in order to ensure that the locking pin is stably matched with the inclined wedge surface 43 on the locking block 41, a matching hole matching the locking pin can be provided on the inclined wedge surface 43.

[0078] In this embodiment, the first direction is the radial direction, and the second direction is the axial direction. Embodiment 6

[0079] Please refer to Figure 20-Figure 22 The main difference between this embodiment and the fifth embodiment is that the positioning protrusion is arranged on the lower surface of the connecting block 2, the positioning hole is arranged on the upper surface of the supporting block 3, the locking holes on the connecting block 2 and the supporting block 3 both extend radially, and the fifth positioning portion 4 is arranged in the locking hole on the connecting block 2.

[0080] In this embodiment, the first direction is the axial direction, and the second direction is the radial direction.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tire vulcanization inner cavity mold quick disassembly and assembly structure, characterized in that: Comprising a rigid inner mold, the rigid inner mold comprising: An inner mold assembly, the inner mold assembly comprising a plurality of circumferentially distributed submodules (1), the submodules (1) being provided with a connecting block (2), the connecting block (2) having a first positioning portion (21), a second positioning portion (22) and a first limiting surface (24), the first positioning portion (21) having a first guiding surface (23); A support assembly, the support assembly comprising a support block (3) corresponding to the connection block (2) in a one-to-one manner, the support block (3) being provided with a third positioning portion (31) matching the first positioning portion (21), a fourth positioning portion (32) matching the second positioning portion (22), and a second limiting surface (34); the third positioning portion (31) being provided with a second guide surface (33); during the matching process between the first positioning portion (21) and the third positioning portion (31), the first guide surface (23) and the second guide surface (33) are clearance matched, the submodule (1) moves relative to the support block (3) along a first direction, when the first limiting surface (24) and the second limiting surface (34) abut against each other, the first positioning portion (21) and the third positioning portion (31) are matched, the submodule (1) and the support block (3) are positioned in a second direction, and at the same time, the second positioning portion (22) and the fourth positioning portion (32) are matched; one of the first direction and the second direction is set as an axial direction, and the other is set as a radial direction; a fifth positioning portion (4), wherein when the second positioning portion (22) and the fourth positioning portion (32) are matched, the fifth positioning portion (4) can respectively match with the second positioning portion (22) and the fourth positioning portion (32) to position the submodule (1) and the support block (3) in the first direction; One of the first positioning portion (21) and the third positioning portion (31) is set as a positioning hole, and the other is set as a positioning protrusion matching the positioning hole; one of the inner wall surface of the positioning hole and the outer peripheral surface of the positioning protrusion forms the first guide surface (23), and the other forms the second guide surface (33).

2. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 1, characterized in that: The positioning protrusion is configured as a detachable first connecting pin; And / or, the peripheral surface of the protruding end of the positioning protrusion is set as a conical surface; And / or, one of the first limiting surface (24) and the second limiting surface (34) is provided with a boss, and the other is provided with a recessed platform matching the boss.

3. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 1, characterized in that: The second positioning portion (22) and the fourth positioning portion (32) are both configured as semicircular pin holes. When the second positioning portion (22) cooperates with the fourth positioning portion (32), the two semicircular pin holes are spliced ​​to form a complete pin hole. The fifth positioning portion (4) is configured as a positioning pin, which can be inserted into the complete pin hole and cooperate with the complete pin hole clearance.

4. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 1, characterized in that: The second positioning portion (22) and the fourth positioning portion (32) are both configured as locking holes; when the second positioning portion (22) is matched with the fourth positioning portion (32), the two locking holes are connected.

5. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 4, characterized in that: The fifth positioning portion (4) is configured as a locking pin, and when the second positioning portion (22) cooperates with the fourth positioning portion (32), the locking pin can pass through the two locking holes in sequence.

6. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 5, characterized in that: The inner side wall of the locking hole is provided with a receiving hole (6) in communication therewith, and a locking steel ball (61) and a first elastic member (62) are provided in the receiving hole (6). When no external force is applied, the first elastic member (62) allows part of the locking steel ball (61) to extend into the locking hole; and the locking pin is provided with a locking groove matching the locking steel ball (61).

7. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 4, characterized in that: The fifth positioning portion (4) is configured to accommodate a locking block (41) and a second elastic member (42) in one of the locking holes; when no external force is applied, the second elastic member (42) causes a portion of the locking block (41) to extend out of the locking hole, and the portion of the locking block (41) that extends out has an inclined wedge surface (43); when the second positioning portion (22) cooperates with the fourth positioning portion (32), the locking block (41) can extend into another of the locking holes.

8. The tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 1, characterized in that: It also comprises an active outer mould (7), wherein the rigid inner mould is arranged inside the active outer mould (7); the rigid inner mould is connected to a driving component for driving the rigid inner mould to open and close radially.

9. A tire vulcanization inner cavity mold quick disassembly and assembly structure according to claim 8, characterized in that: The driving assembly comprises an inner mold opening and closing rod (81), the inner mold opening and closing rod (81) being connected to a hydraulic cylinder for driving the inner mold opening and closing rod (81) to move axially; a connecting rod (82) is provided between the inner mold opening and closing rod (81) and the support block (3), and two ends of the connecting rod (82) are respectively hinged to the inner mold opening and closing rod (81) and the support block (3); And / or, a guide rail (91) is provided on the vulcanizing machine (9), a slider (92) capable of moving along the guide rail (91) is provided on the guide rail (91), and the support block (3) is fixedly connected to the slider (92).

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