Vulcanizing device for tire production

Abstract

The invention discloses a vulcanizing device for tire production, which belongs to the field of tire vulcanization and comprises a rack unit, a tray, an upper die mounted on a cross beam of the rack unit, a lower die fixed on the ground and positioned below the upper die, and a capsule part connected to the lower die, the capsule part comprises an upper pressing part, a lower pressing part, a connecting column for connecting the upper pressing part with the lower pressing part, and a base fixed in the lower die and connected with the lower pressing part; the lower pressing part comprises a lower pressing disc and a plurality of first guide grooves formed in the lower pressing disc. By adopting an opposite movement pressing mode, the automatic clamping device can be easily combined with a motor, a pneumatic system or a servo system to realize automatic clamping; meanwhile, parallel movement of the upper pressing disc and the lower pressing disc can be kept through the pressing mode, and the neck of the capsule is evenly stressed; local stress concentration of a capsule opening can be reduced, the service life of the capsule is prolonged, and meanwhile the sealing failure risk between the pressing disc and the capsule is reduced. And meanwhile, quick loading and unloading of the capsules are facilitated.

Description

Technical Field

[0001] This invention relates to the field of tire vulcanization, and more specifically, to a vulcanization apparatus for tire production. Background Technology

[0002] The vulcanizing unit used in tire production, also known as a vulcanizing machine, is a crucial piece of equipment used in the tire manufacturing process. It transforms the soft, sticky raw tire into a strong, elastic, and durable finished tire by applying specific temperatures, pressures, and times.

[0003] The bladder is an indispensable core component of the vulcanizing machine. During vulcanization, nitrogen gas is injected into the bladder, causing it to expand rapidly like a balloon, pushing the soft "green tire" from the inside out and making it tightly adhere to the inner wall of the molding mold. This internal heating of the tire, combined with the heating from the external mold, ensures that the tire is heated evenly from the inside out, resulting in a complete vulcanization reaction. Currently, vulcanizing machine bladders are typically installed by bolting them to the pressure plate, thereby pressing the upper and lower necks of the bladder. For example, existing technology (Chinese utility model patent publication number CN213260587U) discloses a clamping device for quick bladder replacement during tire vulcanization, which employs... The installation of capsules is achieved by bolt tightening. This mechanical fixing method, which uses bolts to lock the pressure plate to clamp the upper and lower necks of the capsule, is simple in structure and low in cost. However, it has the problem of uneven clamping force. Ideally, the clamping force in the circumferential direction of the capsule neck should be uniform. However, with bolt tightening, the preload of each bolt may have slight differences, resulting in uneven pressure from the pressure plate on the capsule neck. This will create local stress concentration points at the root of the capsule. During vulcanization, the capsule needs to repeatedly withstand huge internal pressure and thermal stress. Uneven clamping force at the root will accelerate fatigue in this area, causing the capsule to crack, tear, or even be torn off from the root of the neck prematurely. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a vulcanization device for tire production.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A vulcanizing apparatus for tire production includes a frame unit, a material tray, an upper mold mounted on a crossbeam of the frame unit, a lower mold fixed to the ground and located below the upper mold, and a capsule portion connected to the lower mold.

[0007] The capsule part includes an upper pressing part, a lower pressing part, a connecting column connecting the upper pressing part and the lower pressing part, and a base fixed inside the lower mold and connected to the lower pressing part;

[0008] The lower pressing part includes a lower pressing plate, multiple guide grooves opened inside the lower pressing plate, a lower plate body fixedly connected to the lower end of the connecting column, and multiple support columns fixedly connected to the lower end of the lower plate body and respectively inserted into the multiple guide grooves.

[0009] The upper pressing part includes an upper pressing plate, a guide groove II opened inside the upper pressing plate, an upper plate body fixed to the upper end of the connecting column, and a guide block fixed to the upper end of the upper plate body and inserted into the guide groove II.

[0010] The connecting column is rotatably connected to a driving component, and the two ends of the driving component are respectively connected to the upper pressure plate and the lower pressure plate to drive the upper pressure plate and the lower pressure plate to move towards each other or away from each other.

[0011] Furthermore, both the upper and lower pressure plates have threaded grooves inside. The driving component includes a shaft rotatably connected inside the connecting column and threaded ends on the outer surfaces of both ends of the shaft. The two threaded ends are respectively screwed into the threaded grooves inside the upper and lower pressure plates.

[0012] Furthermore, the lower ends of the plurality of support columns are fixedly connected to the upper end of the base, and a drive unit is fixedly connected inside the base, with the output shaft of the drive unit fixedly connected to the lower end of the shaft body.

[0013] Furthermore, both the upper and lower disc bodies are internally connected to a centering component, which includes a groove formed inside the upper and lower disc bodies, a sealing plate fixed in the inner wall of the groove and flush with the disc surface, and multiple positioning blocks connected to one side of the sealing plate.

[0014] Furthermore, each of the multiple positioning blocks has an inclined surface on one side, the guide block is fixed to one side of one of the sealing plates, and the upper ends of the multiple support columns are fixed to another sealing plate.

[0015] Furthermore, the sealing plate has multiple sliding grooves inside, and multiple positioning blocks are slidably connected in the multiple sliding grooves. The upper plate and the lower plate are both connected to a diameter adjustment part, and the diameter adjustment part includes a turntable rotatably connected in a groove, multiple guide grooves opened inside the turntable, multiple moving parts located in the multiple guide grooves and rotatably connected at one end to the positioning block, a slot opened at the center of the turntable, and a drive assembly rotatably connected inside the shaft body.

[0016] Furthermore, the drive assembly includes two sets of movable slots symmetrically formed on the outer surface of the shaft body, two rotating rods movably connected inside the shaft body, two sets of connecting blocks respectively fixed to the outer surface of the two rotating rods and located in the movable slots, two retaining rings respectively fixed to the outer wall of the two sets of connecting blocks, a bearing with its outer ring fixed inside the shaft body, a rotating plate fixed in the inner ring of the bearing, a gear 1 rotatably connected inside the rotating plate, two guide posts with one end fixed to one end of one of the rotating rods and the other end passing through the rotating plate and movably inserted inside the other rotating rod, and two racks respectively fixed to one end of the two rotating rods and movably inserted inside the rotating plate, with both racks meshing with gear 1.

[0017] Furthermore, a hollow ring is screwed to one end of the shaft, and one end of the rotating rod extends outward from one end of the shaft. An adjusting disc is fixed to the extended end of the rotating rod, and the upper end of the hollow ring is in contact with the lower end of the adjusting disc.

[0018] Furthermore, a groove is provided on one side of each of the multiple positioning blocks, and a toothed groove is provided on the inner wall of the groove. A gear two is rotatably connected to one side of the positioning block, and a flat material assembly is connected inside the positioning block. The flat material assembly is connected to the gear two.

[0019] Furthermore, the flat material assembly includes a rotating shaft rotatably connected inside the positioning block, a first synchronous wheel fixed to the outside of the rotating shaft, a roller rotatably connected inside the positioning block and entering the groove, a second synchronous wheel fixed to one end of the roller, and a synchronous belt connecting the first synchronous wheel and the second synchronous wheel.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) This solution is equipped with an upper pressing part and a lower pressing part. The upper pressing part and the lower pressing part move relative to each other to achieve pressing. By adopting this pressing method, it can be easily combined with a motor, pneumatic or servo system to achieve automated clamping. At the same time, this pressing method can keep the upper pressing plate and the lower pressing plate moving in parallel, and the capsule neck is subjected to uniform force. It can reduce the local stress concentration at the capsule mouth, extend the capsule life, and also reduce the risk of seal failure between the pressing plate and the capsule. It also facilitates the quick loading and unloading of capsules.

[0022] (2) This solution is equipped with a centering component. When the neck of the capsule enters between the disc and the pressure plate, multiple guide blocks can contact the inner ring wall of the neck, which plays an automatic centering role. When the neck of the capsule is inserted, even if there is a slight deviation or offset, it will automatically return to the center position under the guidance of the inclined surface on the guide block, so that the center of the capsule coincides with the central axis of the pressure plate and the fixed plate, avoiding eccentricity during the vulcanization process. Since the guide block ensures the concentric positioning of the neck in the circumferential direction, the upper and lower force surfaces are relatively parallel when the pressure plate is pressed, which can prevent the pressure plate from contacting locally first, resulting in one side being pressed first and the other side not being pressed. It ensures that the sealing ring is pressed evenly, improving the sealing reliability and vulcanization air tightness.

[0023] (3) This solution is equipped with a diameter adjustment part. When the inner diameter of the capsule neck changes, the position of multiple positioning blocks can be adjusted by the drive component. By adjusting the position of multiple positioning blocks synchronously, it can adapt to capsule necks of different sizes and achieve centering of capsule necks of different sizes. One set of structure can be adapted to multiple specifications of capsules, reduce the number of spare parts, and improve the mold changing efficiency and flexible production capacity of the vulcanizing machine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram showing the positional relationship between the lower mold and the capsule portion of the present invention;

[0026] Figure 3 This is a schematic diagram of the capsule structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the upper and lower clamping parts of the present invention;

[0028] Figure 5 This is a schematic diagram of the movable groove and driving component structure of the present invention;

[0029] Figure 6 This is a cross-sectional view of the upper clamping part of the present invention;

[0030] Figure 7 This is a schematic diagram of the centering component structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the groove and diameter adjustment part of the present invention;

[0032] Figure 9 This is a schematic diagram of the card slot and connecting block structure of the present invention;

[0033] Figure 10 This is a cross-sectional view of the shaft of the present invention;

[0034] Figure 11 This is a top view of the bearing and rotating plate of the present invention;

[0035] Figure 12 This is a schematic diagram of the internal structure of the positioning block of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Frame unit; 2. Upper mold; 3. Material tray; 4. Lower mold; 5. Capsule section; 51. Base; 52. Lower clamping part; 521. Lower platen body; 522. Lower pressure plate; 523. Support column; 524. Guide groove one; 525. Threaded groove; 53. Connecting column; 54. Upper clamping part; 541. Upper platen body; 542. Guide block; 543. Upper pressure plate; 544. Guide groove two; 55. Drive component; 551. Shaft body; 552. Threaded end; 6. Centering component; 61. Groove; 62. Sealing plate; 63. Positioning block; 631. Gear two; 63 2. Groove; 64. Inclined surface; 65. Slide groove; 651. Gear groove; 7. Diameter adjustment part; 71. Turntable; 72. Guide groove three; 73. Moving part; 74. Slot; 75. Drive assembly; 751. Rotating rod; 752. Connecting block; 753. Snap ring; 754. Movable groove; 755. Guide post; 756. Bearing; 757. Rotating plate; 76. Hollow ring body; 77. Adjusting disc; 78. Rack; 79. Gear one; 8. Flat material assembly; 81. Rotating shaft; 82. Synchronous pulley one; 83. Roller body; 84. Synchronous pulley two; 85. Synchronous belt. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 12 A vulcanizing apparatus for tire production includes a frame unit 1, a material tray 3, an upper mold 2 mounted on a crossbeam of the frame unit 1, a lower mold 4 fixed to the ground and located below the upper mold 2, and a capsule part 5 connected to the lower mold 4. The frame unit 1 provides strong mold closing force and withstands internal pressure. It is usually a frame or column structure. The frame is powered by a hydraulic system to open and close the mold and shrink the mold. The material tray 3 is used to place the blank to be processed and shaped.

[0040] The capsule part 5 includes an upper pressing part 54, a lower pressing part 52, a connecting post 53 connecting the upper pressing part 54 and the lower pressing part 52, and a base 51 fixed inside the lower mold 4 and connected to the lower pressing part 52.

[0041] The lower pressing part 52 includes a lower pressing plate 522, a plurality of guide grooves 524 formed inside the lower pressing plate 522, a lower plate body 521 fixedly connected to the lower end of the connecting column 53, and a plurality of support columns 523 fixedly connected to the lower end of the lower plate body 521 and respectively inserted into the plurality of guide grooves 524.

[0042] The upper pressing part 54 includes an upper pressing plate 543, a second guide groove 544 opened inside the upper pressing plate 543, an upper plate body 541 fixed to the upper end of the connecting column 53, and a guide block 542 fixed to the upper end of the upper plate body 541 and inserted into the second guide groove 544.

[0043] The connecting column 53 is rotatably connected to a driving component 55, and the two ends of the driving component 55 are respectively connected to the upper pressure plate 543 and the lower pressure plate 522 to drive the upper pressure plate 543 and the lower pressure plate 522 to move towards each other or away from each other.

[0044] Both the upper pressure plate 543 and the lower pressure plate 522 have threaded grooves 525 inside. The driving component 55 includes a shaft 551 rotatably connected inside the connecting column 53 and threaded ends 552 provided on the outer surfaces of both ends of the shaft 551. The two threaded ends 552 are respectively screwed into the threaded grooves 525 in the upper pressure plate 543 and the lower pressure plate 522.

[0045] The lower ends of the multiple support columns 523 are fixedly connected to the upper end of the base 51. A drive unit is fixedly connected inside the base 51, and the output shaft of the drive unit is fixedly connected to the lower end of the shaft body 551.

[0046] By adopting the above technical solution, the capsule is fitted onto the outside of the capsule part 5, with the upper neck of the capsule located between the upper pressure plate 543 and the upper plate body 541, and the lower neck of the capsule located between the lower pressure plate 522 and the lower plate body 521. The drive unit inside the control base 51 drives the shaft 551 to rotate. When the shaft 551 rotates, the threaded ends 552 at both ends of the shaft 551 can drive the upper pressure plate 543 and the lower pressure plate 522 to move towards each other. At this time, the upper pressure plate 543 moves towards the upper plate body 541 and presses the upper neck of the capsule, and the lower pressure plate 522 moves towards the lower plate body 521 and presses the lower neck of the capsule; when the shaft... When body 551 rotates and causes the upper pressure plate 543 and lower pressure plate 522 to move in opposite directions, the upper pressure plate 543 and lower pressure plate 522 can respectively release the clamping of the upper and lower necks of the capsule, making it easy to disassemble and replace the capsule. By adopting this clamping method, it can be easily combined with motor, pneumatic or servo system to achieve automated clamping. At the same time, this clamping method can keep the upper pressure plate 543 and lower pressure plate 522 moving in parallel, and the force on the capsule neck is uniform. It can reduce the local stress concentration at the capsule mouth, extend the capsule life, and also reduce the risk of seal failure between the pressure plate and the capsule. It also facilitates the quick loading and unloading of capsules.

[0047] like Figure 6 and Figure 7 As shown, the upper plate 541 and the lower plate 521 are both connected to a centering component 6. The centering component 6 includes a groove 61 opened inside the upper plate 541 and the lower plate 521, a sealing plate 62 fixed in the inner wall of the groove 61 and flush with the plate surface, and a plurality of positioning blocks 63 connected to one side of the sealing plate 62.

[0048] Each of the multiple positioning blocks 63 has a sloping surface 64 on one side. The guide block 542 is fixed to one side of one of the sealing plates 62, and the upper ends of the multiple support columns 523 are fixed to another sealing plate 62.

[0049] By adopting the above technical solution, multiple guide blocks 542 are evenly distributed in a circumferential array on the sealing plate 62. When the neck of the capsule enters between the disc and the pressure plate, the multiple guide blocks 542 can contact the inner ring wall of the neck opening, playing a role in automatic centering. When the neck of the capsule is inserted, even if there is a slight deviation or offset, it will automatically return to the center position under the guidance of the inclined surface 64 on the guide block 542, so that the center of the capsule coincides with the central axis of the pressure plate and the fixed plate, avoiding eccentricity during vulcanization. Since the guide blocks 542 ensure concentric positioning in the circumferential direction of the neck, the upper and lower force surfaces are relatively parallel when the pressure plate is pressed, which can prevent the pressure plate from contacting locally first, resulting in one side being pressed first and the other side not being pressed. This ensures that the sealing ring is pressed evenly, improving the sealing reliability and vulcanization airtightness.

[0050] like Figure 5 , Figures 7-11 As shown, the sealing plate 62 has multiple sliding grooves 65 inside, and multiple positioning blocks 63 are respectively slidably connected in the multiple sliding grooves 65. The upper plate 541 and the lower plate 521 are both connected to the diameter adjustment part 7. The diameter adjustment part 7 includes a turntable 71 rotatably connected in the groove 61, multiple guide grooves 72 opened in the turntable 71, multiple moving parts 73 respectively located in the multiple guide grooves 72 and rotatably connected at one end to the positioning block 63, a slot 74 opened at the center of the turntable 71, and a drive assembly 75 rotatably connected in the shaft 551.

[0051] The drive assembly 75 includes two sets of movable grooves 754 symmetrically opened on the outer surface of the shaft 551, two rotating rods 751 movably connected inside the shaft 551, two sets of connecting blocks 752 respectively fixed to the outer surface of the two rotating rods 751 and located in the movable grooves 754, two retaining rings 753 respectively fixed to the outer wall of the two sets of connecting blocks 752, a bearing 756 whose outer ring is fixed inside the shaft 551, a rotating plate 757 fixed in the inner ring of the bearing 756, a gear 79 rotatably connected inside the rotating plate 757, two guide posts 755 whose one end is fixed to one end of one of the rotating rods 751 and whose other end passes through the rotating plate 757 and is movably inserted into the other rotating rod 751, and two racks 78 respectively fixed to one end of the two rotating rods 751 and movably inserted into the rotating plate 757, and both racks 78 mesh with gear 79.

[0052] A hollow ring 76 is screwed to one end of the shaft 551. One end of the rotating rod 751 extends outward from one end of the shaft 551, and an adjusting disc 77 is fixed to the extended end of the rotating rod 751. The upper end of the hollow ring 76 is in contact with the lower end of the adjusting disc 77.

[0053] By adopting the above technical solution, when the inner diameter of the capsule neck changes, the position of multiple positioning blocks 63 can be adjusted by the drive assembly 75. Rotating the hollow ring 76 causes it to descend and enter the shaft 551. After the hollow ring 76 descends, its supporting function on the adjusting disc 77 is canceled. Pressing the adjusting disc 77 causes it to drive the upper rotating rod 751 to descend. The descent of the upper rotating rod 751 drives the rack 78 and guide post 755 to descend. The guide post 755 continues to move downward and extends into the lower rotating rod 751. Simultaneously, the rack 78 drives the gear 1 79 to rotate. The rotation of gear 1 79 drives another rack 78 to move upward, thus causing the two rotating rods 751 to move towards each other, i.e., the upper rotating rod 751... 1. The rotating rod 751 moves downward and upward. The movement of the rotating rod 751 drives the retaining ring 753 towards the slot 74 through the connecting block 752, so that the retaining ring 753 is inserted into the slot 74. Then, the adjusting plate 77 rotates, which drives the rotating rod 751, the connecting block 752, and the retaining ring 753 to rotate. The rotation of the retaining ring 753 drives the turntable 71 to rotate. The rotation of the turntable 71 drives the moving part 73 to move through the guide groove 72. The movement of the moving part 73 drives the positioning block 63 to slide along the slide groove 65, thereby synchronously adjusting the position of multiple positioning blocks 63 to adapt to the neck of capsules of different sizes and achieve centering of the neck of capsules of different sizes. One set of structure can adapt to multiple specifications of capsules, reduce the number of spare parts, and improve the mold changing efficiency and flexible production capacity of the vulcanizing machine.

[0054] When the upper rotating rod 751 rotates, it can drive the guide post 755 and the rotating plate 757 to rotate. The guide post 755 drives the lower rotating rod 751 to rotate synchronously. The racks 78 on the two rotating rods 751 also rotate accordingly. At the same time, the rotating plate 757 rotates in the bearing 756, which also drives the gear 79 to rotate synchronously.

[0055] like Figure 7 , Figure 8 , Figure 12 As shown, a groove 632 is provided on one side of each of the multiple positioning blocks 63, a toothed groove 651 is provided on the inner wall of the sliding groove 65, a gear 631 is rotatably connected to one side of the positioning block 63, and a flat material assembly 8 is connected inside the positioning block 63, the flat material assembly 8 is connected to the gear 631.

[0056] The flat material assembly 8 includes a rotating shaft 81 rotatably connected inside the positioning block 63, a first synchronous wheel 82 fixed to the outside of the rotating shaft 81, a roller 83 rotatably connected inside the positioning block 63 and entering the groove 632, a second synchronous wheel 84 fixed to one end of the roller 83, and a synchronous belt 85 connecting the first synchronous wheel 82 and the second synchronous wheel 84.

[0057] By adopting the above technical solution, when the control drive component 75 rotates and drives multiple positioning blocks 63 to move, the positioning blocks 63 slide in the slide groove 65. The gear 631 on one side of the positioning block 63 meshes with the tooth groove 651. The tooth groove 651 drives the gear 631 to rotate. The rotation of the gear 631 drives the rotating shaft 81 and the synchronous pulley 82 to rotate. The rotation of the synchronous pulley 82 drives the synchronous pulley 84 and the roller 83 to rotate through the synchronous belt 85. The rotation of the roller 83 can generate a slight traction force on the capsule neck that enters the groove 632 (the traction process requires manual observation of the capsule neck opening for timely adjustment), tightening any loose parts in the neck, making the capsule neck opening as flat as possible, and avoiding wrinkles in the capsule neck opening. The option of equipping the capsule section 5 with a flat material component 8 can be selected according to the actual needs of capsule installation.

[0058] Instructions for use: Place the capsule over the capsule part 5, ensuring the upper neck of the capsule is positioned between the upper pressure plate 543 and the upper plate body 541, and the lower neck of the capsule is positioned between the lower pressure plate 522 and the lower plate body 521. When the neck of the capsule enters between the plate body and the pressure plate, multiple guide blocks 542 can contact the inner wall of the neck opening, achieving automatic centering. The drive unit within the control base 51 drives the shaft 551 to rotate. When the shaft 551 rotates, the screws at both ends of the shaft 551... The end plate 552 can drive the upper pressure plate 543 and the lower pressure plate 522 to move towards each other. At this time, the upper pressure plate 543 moves towards the upper plate body 541 and presses the upper neck of the capsule, while the lower pressure plate 522 moves towards the lower plate body 521 and presses the lower neck of the capsule. When the shaft body 551 rotates and the upper pressure plate 543 and the lower pressure plate 522 move in opposite directions, the upper pressure plate 543 and the lower pressure plate 522 can respectively release the clamping of the upper and lower necks of the capsule, and the capsule can be disassembled and replaced.

[0059] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A vulcanizing apparatus for tire production, comprising a frame unit (1), a material tray (3), an upper mold (2) mounted on a crossbeam of the frame unit (1), a lower mold (4) fixed to the ground and located below the upper mold (2), and a capsule portion (5) connected to the lower mold (4), characterized in that: The capsule part (5) includes an upper pressing part (54), a lower pressing part (52), a connecting post (53) connecting the upper pressing part (54) and the lower pressing part (52), and a base (51) fixed inside the lower mold (4) and connected to the lower pressing part (52). The lower pressing part (52) includes a lower pressing plate (522), a plurality of guide grooves (524) opened inside the lower pressing plate (522), a lower plate body (521) fixedly connected to the lower end of the connecting column (53), and a plurality of support columns (523) fixedly connected to the lower end of the lower plate body (521) and respectively inserted into the plurality of guide grooves (524). The upper pressing part (54) includes an upper pressing plate (543), a guide groove 2 (544) opened inside the upper pressing plate (543), an upper plate body (541) fixed to the upper end of the connecting column (53), and a guide block (542) fixed to the upper end of the upper plate body (541) and inserted into the guide groove 2 (544). The connecting column (53) is rotatably connected to a driving component (55), and the two ends of the driving component (55) are respectively connected to the upper pressure plate (543) and the lower pressure plate (522) to drive the upper pressure plate (543) and the lower pressure plate (522) to move towards each other or away from each other.

2. The vulcanizing apparatus for tire production according to claim 1, characterized in that: Both the upper pressure plate (543) and the lower pressure plate (522) have threaded grooves (525) inside. The driving component (55) includes a shaft (551) rotatably connected inside the connecting column (53) and threaded ends (552) on the outer surfaces of both ends of the shaft (551). The two threaded ends (552) are respectively screwed into the threaded grooves (525) in the upper pressure plate (543) and the lower pressure plate (522).

3. The vulcanizing apparatus for tire production according to claim 2, characterized in that: The lower ends of the multiple support columns (523) are fixedly connected to the upper end of the base (51), and a drive unit is fixedly connected inside the base (51), and the output shaft of the drive unit is fixedly connected to the lower end of the shaft body (551).

4. A vulcanizing apparatus for tire production according to claim 3, characterized in that: The upper plate (541) and the lower plate (521) are both connected to a centering component (6), and the centering component (6) includes a groove (61) opened inside the upper plate (541) and the lower plate (521), a sealing plate (62) fixed in the inner wall of the groove (61) and flush with the plate surface, and a plurality of positioning blocks (63) connected to one side of the sealing plate (62).

5. A vulcanizing apparatus for tire production according to claim 4, characterized in that: Each of the multiple positioning blocks (63) has a sloping surface (64) on one side. The guide block (542) is fixed to one side of one of the sealing plates (62). The upper ends of the multiple support columns (523) are fixed to another sealing plate (62).

6. A vulcanizing apparatus for tire production according to claim 5, characterized in that: The sealing plate (62) has multiple sliding grooves (65) inside, and multiple positioning blocks (63) are slidably connected in the multiple sliding grooves (65). The upper plate (541) and the lower plate (521) are both connected to the diameter adjustment part (7). The diameter adjustment part (7) includes a turntable (71) rotatably connected in the groove (61), multiple guide grooves (72) opened in the turntable (71), multiple moving parts (73) located in the multiple guide grooves (72) and rotatably connected at one end to the positioning block (63), a slot (74) opened at the center of the turntable (71), and a drive assembly (75) rotatably connected in the shaft (551).

7. A vulcanizing apparatus for tire production according to claim 6, characterized in that: The drive assembly (75) includes two sets of movable grooves (754) symmetrically formed on the outer surface of the shaft (551), two rotating rods (751) movably connected inside the shaft (551), two sets of connecting blocks (752) respectively fixed to the outer surface of the two rotating rods (751) and located in the movable grooves (754), two retaining rings (753) respectively fixed to the outer wall of the two sets of connecting blocks (752), a bearing (756) with its outer ring fixed inside the shaft (551), and a bearing fixed to the bearing. (756) The rotating plate (757) in the inner ring body, the gear 1 (79) rotatably connected inside the rotating plate (757), the two guide posts (755) with one end fixed to one end of one of the rotating rods (751) and the other end passing through the rotating plate (757) and movably inserted into the other rotating rod (751), and the two racks (78) fixed to one end of the two rotating rods (751) and movably inserted into the rotating plate (757), and both racks (78) mesh with the gear 1 (79).

8. A vulcanizing apparatus for tire production according to claim 7, characterized in that: A hollow ring (76) is screwed to one end of the shaft (551), and one end of the rotating rod (751) extends outward from one end of the shaft (551). An adjusting plate (77) is fixed to the extended end of the rotating rod (751), and the upper end of the hollow ring (76) is in contact with the lower end of the adjusting plate (77).

9. A vulcanizing apparatus for tire production according to claim 8, characterized in that: Each of the multiple positioning blocks (63) has a groove (632) on one side, and the inner wall of the slide (65) has a toothed groove (651). A gear (631) is rotatably connected to one side of the positioning block (63), and a flat material assembly (8) is connected inside the positioning block (63). The flat material assembly (8) is connected to the gear (631).

10. A vulcanizing apparatus for tire production according to claim 9, characterized in that: The flat material assembly (8) includes a rotating shaft (81) rotatably connected inside the positioning block (63), a first synchronous wheel (82) fixed to the outside of the rotating shaft (81), a roller (83) rotatably connected inside the positioning block (63) and entering the groove (632), a second synchronous wheel (84) fixed to one end of the roller (83), and a synchronous belt (85) connecting the first synchronous wheel (82) and the second synchronous wheel (84).

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