A heating device for a vulcanizing machine

Abstract

This invention discloses a heating device for a vulcanizing machine, relating to the technical field of vulcanizing machine heating devices. It includes a base plate, with a heating coil fixedly installed on the inner side of the base plate. A mold is fixedly connected to the upper surface of the base plate. The device also includes a waste heat utilization structure disposed on the surface of the base plate. The waste heat utilization structure includes an outer fixing ring and an inner fixing ring fixedly connected to the lower surface of the base plate. An outer folding cylinder is fixedly connected to the lower end of the outer fixing ring, and an inner folding cylinder is fixedly connected to the lower end of the inner fixing ring. This invention reuses the recovered heat by setting up a waste heat utilization structure. The recovered waste heat can also be used to heat air to form hot air, which can be used to dry rubber products or other materials requiring drying. This improves the service life of the mold and the vulcanizing effect, while simultaneously achieving energy recycling and improving the performance of the vulcanizing machine heating device to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of heating devices for vulcanizing machines, specifically a heating device for vulcanizing machines. Background Technology

[0002] The heating device of the vulcanizing machine is an important component of the vulcanizing machine. It mainly includes types such as steam heating, heat transfer oil heating, electric heating, gas heating and hot air circulation heating. The electric heating device converts electrical energy into heat energy by means of resistance heating element. It has fast heating speed, is clean and environmentally friendly and easy to operate. These heating devices have their own characteristics and can be selected according to factors such as production needs, energy supply, temperature control accuracy and operating costs to meet the requirements of different vulcanizing processes.

[0003] CN218570506U discloses a rapid and uniform heating device for a tire vulcanizing machine and the vulcanizing machine itself. The rapid and uniform heating device includes a base plate and multiple sets of heating coils. A spiral groove is formed on one end face of the base plate. The multiple sets of heating coils are sequentially laid in a predetermined area of ​​the spiral groove on the base plate, with the ends of adjacent sets of heating coils positioned close together, so that the multiple sets of heating coils are uniformly embedded in the spiral groove of the base plate. The input ends of the multiple sets of heating coils are connected in parallel, and the output ends of the multiple sets of heating coils are also connected in parallel. All sets of heating coils are connected to an AC power supply. The vulcanizing machine uses the aforementioned rapid and uniform heating device. In this application, the heating device has a fast heating speed, uniform temperature, improved vulcanizing efficiency, simple structure, long service life, and is easy to maintain, which can greatly reduce the production cost of vulcanization.

[0004] Existing technologies often have the following drawbacks: In actual use of the heating device of the vulcanizing machine, after vulcanizing the product, the vulcanized tire product often has a high moisture content, which is not conducive to the rapid drying and storage of the vulcanized tire in the later stage.

[0005] Therefore, we propose a heating device for a vulcanizing machine. Summary of the Invention

[0006] The purpose of this invention is to provide a heating device for a vulcanizing machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a heating device for a vulcanizing machine, comprising a base plate, a heating coil fixedly mounted on the inner side of the base plate, a mold fixedly connected to the upper surface of the base plate, and further comprising: a waste heat utilization structure disposed on the surface of the base plate, the waste heat utilization structure comprising an outer fixing ring and an inner fixing ring fixedly connected to the lower surface of the base plate, an outer folding cylinder fixedly connected to the lower end of the outer fixing ring, an inner folding cylinder fixedly connected to the lower end of the inner fixing ring, an upper plate fixedly connected to the lower ends of the outer fixing ring and the inner fixing ring, two mounting tubes communicating with the side wall of the outer fixing ring, a hollow disc communicating with the ends of the two mounting tubes close to each other, twelve first ventilation holes opened on the lower surface of the upper plate, and twelve second ventilation holes opened on the upper surface of the hollow disc. Two ventilation holes; an auxiliary structure disposed on the surface of the outer fixed ring, the auxiliary structure including an upper circular plate frame rotatably mounted on the inner side of the upper plate, a lower circular plate frame rotatably mounted on the inner side of the hollow circular plate, both the upper and lower circular plate frames being spliced ​​together from a circular plate and two grooved plates, a sliding plate being slidably connected to the inner side of the upper circular plate frame, the sliding plate being fixedly connected to the upper end of the lower circular plate frame, twelve first reserved holes being opened on the surface of the upper circular plate frame, and twelve second reserved holes being opened on the surface of the lower circular plate frame, the first ventilation holes, the second ventilation holes, the first reserved holes, and the second reserved holes being all diamond-shaped holes; a positioning structure disposed inside the lower circular plate frame, the positioning structure including two limiting strips slidably connected inside the lower circular plate frame, the other end of the two limiting strips being fixedly connected to a positioning block.

[0008] The aforementioned components achieve the following effects: By setting up a waste heat utilization structure, the recovered heat is reused, and the recovered waste heat can also be used to heat air to form hot air. This hot air can be used to dry rubber products or other materials that require drying, improving the service life of the mold and the vulcanization effect. At the same time, energy recycling is achieved, which to a certain extent improves the performance of the vulcanizing machine's heating device. By setting up an auxiliary structure, the intermittent blowing work on the upper and lower parts of the vulcanized tire is facilitated, further improving the efficiency of the overall drying of the vulcanized tire. By setting up a positioning structure, the clamping work can be completed quickly and easily after the vulcanized tire is placed, providing a solid guarantee for subsequent drying processing and comprehensively improving the stability of the vulcanized tire drying process.

[0009] Preferably, the side wall of the upper plate is fixedly connected to two support plates, and a telescopic rod connects the support plates and the mounting pipe.

[0010] The effect achieved by the above-mentioned components is that by setting a telescopic rod to extend and retract between the mounting tube and the support plate, the movement direction between the inner and outer folding tubes is restricted.

[0011] Preferably, a mounting bracket is fixedly connected to the side wall of the outer fixing ring, a first motor is fixedly installed on the inner side of the mounting bracket, a drive plate is fixedly connected to the output end of the first motor, a limit bracket is fixedly connected to the side wall of the upper plate, and the drive plate is a diamond-shaped plate.

[0012] The effect achieved by the above components is as follows: when the first motor is started, the first motor will drive the drive plate to rotate. When the rhomboid drive plate rotates, the drive plate will move relative to the limit frame, which can realize the lifting of the upper plate.

[0013] Preferably, the lower surface of the limiting frame is provided with a slot.

[0014] The effect achieved by the above components is that by setting the slot on the inner side of the limit frame, the stability of lifting the limit frame and the upper plate is improved.

[0015] Preferably, the auxiliary structure further includes a gear ring fixedly connected to the side wall of the lower circular plate frame, a positioning frame fixedly connected to the side wall of the hollow disc, a second motor fixedly installed on the inner side of the positioning frame, and a gear fixedly connected to the output end of the second motor, the tooth surface of the gear meshing with the tooth surface of the gear ring.

[0016] The effect achieved by the above components is as follows: when the second motor is started, the second motor will drive the gear to rotate, thereby realizing the torsion of the gear ring, and thus realizing the purpose of simultaneously driving the lower and upper circular plate frames to rotate.

[0017] Preferably, the sidewall of the toothed ring has a partially smooth surface.

[0018] The effect achieved by the above components is that by setting some smooth surfaces on the gear, the gear can pause during rotation.

[0019] Preferably, the upper surface of the lower circular plate frame is fixedly connected with a plurality of support rings of equal size.

[0020] The effect achieved by the above components is that placing the vulcanized tire on a support ring of the same size can avoid the phenomenon that the second reserved hole is easily blocked when the vulcanized tire is placed directly on it.

[0021] Preferably, the positioning structure further includes a drive rod threadedly connected inside the lower circular plate frame, and the drive rod is rotatably connected to the positioning block.

[0022] The effect achieved by the above components is that when the drive rod rotates, it can drive the positioning block.

[0023] Preferably, the surface of the positioning block is provided with a V-shaped groove.

[0024] The effect achieved by the above components is that the V-groove can fit tightly against the edge of the disc-shaped vulcanized tire, thereby achieving precise positioning and clamping of the vulcanized tire.

[0025] Preferably, the inner side of the V-shaped groove is uniformly provided with a number of anti-slip patterns.

[0026] The aforementioned components achieve the following effect: the specially designed anti-slip texture increases the friction between the positioning block and the tire, further improving the stability of clamping the vulcanized tire.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. This invention utilizes a waste heat recovery structure to reuse the recovered heat. The recovered waste heat can also be used to heat air to form hot air, which can be used to dry rubber products or other materials that require drying. This improves the service life of the mold and the vulcanization effect, while realizing the recycling of energy and improving the performance of the vulcanizing machine heating device to a certain extent.

[0029] 2. This invention, through the setting of an auxiliary structure, achieves the drying of the vulcanized tire by rotating the upper and lower circular plate frames. When the first reserved hole on the upper circular plate frame is rotated to overlap with the first ventilation hole, the compressed air above will be ejected through the first ventilation hole and the first reserved hole. At this time, the second reserved hole and the second ventilation hole on the lower circular plate frame are staggered. The second reserved hole and the second ventilation hole at the lower position are not blown with air, and conversely, the second ventilation hole and the second reserved hole at the lower position are blown with air. This realizes the drying of the vulcanized tire from top to bottom, facilitates the intermittent blowing of the vulcanized tire from top to bottom, and further improves the efficiency of the overall drying of the vulcanized tire.

[0030] 3. By setting up a positioning structure, this invention allows the vulcanized tire to be placed stably on top of the support ring during the drying process. Then, the operator manually rotates the drive rod, which drives the positioning block. By setting up the positioning structure, the clamping work can be completed quickly and conveniently after the vulcanized tire is placed, providing a solid guarantee for the subsequent drying process and comprehensively improving the stability of the vulcanized tire drying process. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention from another angle;

[0033] Figure 3 In this invention Figure 2 A schematic diagram of the disassembled structure;

[0034] Figure 4 This is a schematic diagram of the disassembled structure of the waste heat utilization structure and auxiliary structure in this invention;

[0035] Figure 5 This is a partial structural diagram of the waste heat utilization structure in this invention;

[0036] Figure 6 This is a partial structural diagram of the auxiliary structure in this invention;

[0037] Figure 7 In this invention Figure 6 A partial structural diagram;

[0038] Figure 8 In this invention Figure 6 Enlarged view of point A.

[0039] In the diagram: 1. Substrate; 2. Mold; 3. Heating coil; 4. Waste heat utilization structure; 401. Mounting tube; 402. Hollow disc; 403. Outer folding cylinder; 404. Outer fixing ring; 405. Inner fixing ring; 406. Inner folding cylinder; 407. Upper plate; 408. First ventilation hole; 409. Second ventilation hole; 410. Mounting bracket; 411. First motor; 412. Drive plate; 413. Limiting bracket; 414. 415. Telescopic rod; 501. Support plate; 502. Auxiliary structure; 503. Upper circular plate frame; 504. Lower circular plate frame; 505. Positioning frame; 506. Second motor; 507. Gear; 508. Slide plate; 509. First reserved hole; 510. Second reserved hole; 611. Gear ring; 52. Support ring; 63. Positioning structure; 64. Positioning block; 65. Drive rod; 66. Limiting strip; 67. V-groove; 68. Anti-slip texture. Detailed Implementation

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Please see Figure 1-8This invention provides a technical solution: a heating device for a vulcanizing machine, comprising a base plate 1, a heating coil 3 fixedly mounted on the inner side of the base plate 1, a mold 2 fixedly connected to the upper surface of the base plate 1, and further comprising: a waste heat utilization structure 4 disposed on the surface of the base plate 1, the waste heat utilization structure 4 comprising an outer fixing ring 404 and an inner fixing ring 405 fixedly connected to the lower surface of the base plate 1, an outer folding cylinder 403 fixedly connected to the lower end of the outer fixing ring 404, an inner folding cylinder 406 fixedly connected to the lower end of the inner fixing ring 405, an upper plate 407 fixedly connected to the lower ends of the outer fixing ring 404 and the inner fixing ring 405, two mounting tubes 401 connected to the side wall of the outer fixing ring 404, a hollow disc 402 connected to the end of the two mounting tubes 401 that are close to each other, twelve first ventilation holes 408 opened on the lower surface of the upper plate 407, and twelve second ventilation holes 409 opened on the upper surface of the hollow disc 402; the waste heat utilization structure 4 comprises an outer fixing ring 404 and an inner fixing ring 405 fixedly connected to the lower surface of the base plate 404, two mounting tubes 401 connected to the side wall of the outer fixing ring 404, a hollow disc 402 fixedly connected to the end of the two mounting tubes 401 that are close to each other, twelve first ventilation holes 408 opened on the lower surface of the upper plate 407, and twelve second ventilation holes 409 opened on the upper surface of the hollow disc 402; the waste heat utilization structure 4 comprises an outer fixing ring 404 and an inner fixing ring 405 fixedly connected to the lower surface of the base plate 404, two mounting tubes 401 connected to the side wall of the outer fixing ring 404, a hollow The auxiliary structure 5 on the surface of the fixed ring 404 includes an upper circular plate frame 501 rotatably mounted inside the upper plate 407, and a lower circular plate frame 502 rotatably mounted inside the hollow circular plate 402. Both the upper and lower circular plate frames 501 and 502 are composed of circular plates and two grooved plates. A sliding plate 506 is slidably connected to the inner side of the upper circular plate frame 501. The sliding plate 506 is fixedly connected to the upper end of the lower circular plate frame 502. The surface of the upper circular plate frame 501 has twelve first reserved holes 507, and the surface of the lower circular plate frame 502 has twelve second reserved holes 508. The first ventilation hole 408, the second ventilation hole 409, the first reserved hole 507, and the second reserved hole 508 are all diamond-shaped holes. A positioning structure 6 is set inside the lower circular plate frame 502. The positioning structure 6 includes two limiting strips 63 slidably connected inside the lower circular plate frame 502. The other end of the two limiting strips 63 is fixedly connected to a positioning block 61. By setting up the waste heat utilization structure 4, the recovered heat is reused. The recovered waste heat can also be used to heat air to form hot air. This hot air can be used to dry rubber products or other materials that need drying treatment, which improves the service life of mold 2 and the vulcanization effect. At the same time, it realizes the recycling of energy and improves the performance of the heating device of the vulcanizing machine to a certain extent. By setting up the auxiliary structure 5, the intermittent blowing work on the upper and lower parts of the vulcanized tire is facilitated, which further improves the efficiency of the overall drying of the vulcanized tire. By setting up the positioning structure 6, the clamping work can be completed quickly and conveniently after the vulcanized tire is placed, which provides a solid guarantee for the subsequent drying process and improves the stability of the vulcanized tire drying process in all aspects.

[0042] The following section will explain the specific setup and function of the residual heat utilization structure 4, auxiliary structure 5, and positioning structure 6.

[0043] like Figures 1-5As shown, two support plates 415 are fixedly connected to the side wall of the upper plate 407, and a telescopic rod 414 connects the support plates 415 and the mounting tube 401. By setting the telescopic rod 414 to extend and retract between the mounting tube 401 and the support plates 415, it restricts the movement direction between the inner folding tube 406 and the outer folding tube 403. A mounting bracket 410 is fixedly connected to the side wall of the outer fixing ring 404, and a first motor 411 is fixedly installed on the inner side of the mounting bracket 410. A drive plate 412 is fixedly connected to the output end of the first motor 411. A limit frame 413 is fixedly connected to the side wall of the upper plate 407, and the drive plate 412 is a rhomboid plate. When the first motor 411 is started, it will drive the drive plate 412 to rotate. When the rhomboid drive plate 412 rotates, the drive plate 412 will move relative to the limit frame 413, which can realize the lifting operation of the upper plate 407. A slot is opened on the lower surface of the limit frame 413. By setting a slot on the inner side of the limit frame 413, the stability of lifting the limit frame 413 and the upper plate 407 is improved.

[0044] like Figures 1-7 As shown, the auxiliary structure 5 also includes a gear ring 509 fixedly connected to the side wall of the lower circular plate frame 502. A positioning frame 503 is fixedly connected to the side wall of the hollow disc 402. A second motor 504 is fixedly installed on the inner side of the positioning frame 503. A gear 505 is fixedly connected to the output end of the second motor 504. The tooth surface of the gear 505 meshes with the tooth surface of the gear ring 509. When the second motor 504 is started, it drives the gear 505 to rotate, thereby achieving the torsional operation of the gear ring 509, and thus achieving the purpose of simultaneously driving the lower circular plate frame 502 and the upper circular plate frame 501 to rotate. The side wall of the gear ring 509 is provided with a partially smooth surface. By providing a partially smooth surface on the gear 505, the gear 505 can pause during rotation. Several proportionally sized support rings 510 are fixedly connected to the upper surface of the lower circular plate frame 502. Placing the vulcanized tire on the support ring 510 of the same size can prevent the vulcanized tire from being easily blocked when placed directly on the second reserved hole 508.

[0045] like Figures 1-4 and Figure 8 As shown, the positioning structure 6 also includes a drive rod 62 threadedly connected inside the lower circular plate frame 502, and the drive rod 62 is internally rotatably connected to the positioning block 61. When the drive rod 62 rotates, it can drive the positioning block 61. The surface of the positioning block 61 is provided with a V-shaped groove 64. The V-shaped groove can closely fit the edge of the disc-shaped vulcanized tire, thereby achieving precise positioning and clamping of the vulcanized tire. Several anti-slip patterns 65 are evenly arranged on the inner side of the V-shaped groove 64. The anti-slip patterns 65 are specially provided to increase the friction between the positioning block 61 and the tire, further improving the stability of clamping the vulcanized tire.

[0046] Working principle: During the use of substrate 1, the previously processed tire is placed above the hollow disc 402. The first motor 411 is started, which drives the drive plate 412 to rotate. When the rhomboid drive plate 412 rotates, it moves relative to the limiting frame 413, thus lifting the upper disc 407. The groove on the inner side of the limiting frame 413 improves the stability of lifting the limiting frame 413 and the upper disc 407. The telescopic rod 414 extends and retracts between the mounting tube 401 and the support plate 415, which restricts the movement direction between the inner folding cylinder 406 and the outer folding cylinder 403. Through the compression of the inner folding cylinder 406 and the outer folding cylinder 403, the compressed gas flows from the first ventilation hole 408 or along the mounting tube 401 to the second ventilation hole 409 on the hollow disc 402. The air is blown out from the inside, which facilitates the air blowing work on the tire surface. Since the entire substrate 1 is heated after heating, the blown air can be heated, which facilitates the drying of the tire with moisture after vulcanization. By setting the hollow disc 402, it is not only convenient to support the vulcanized tire, but also to blow air on the bottom of the vulcanized tire, thus achieving the purpose of drying the vulcanized tire from both the top and bottom, avoiding the need to turn the tire over before drying. By setting the waste heat utilization structure 4, the recovered heat is reused. The recovered waste heat can also be used to heat air to form hot air. This hot air can be used to dry rubber products or other materials that need to be dried, which improves the service life of the mold 2 and the vulcanization effect, and at the same time realizes the recycling of energy, which improves the performance of the heating device of the vulcanizing machine to a certain extent.

[0047] During the air-drying process of the vulcanized tires, the second motor 504 is started. The second motor 504 drives the gear 505 to rotate, thereby achieving the torsion of the gear ring 509. This allows for the simultaneous rotation of the lower circular plate frame 502 and the upper circular plate frame 501. By setting the sliding structure between the slide plate 506 and the upper circular plate frame 501, the normal driving operation of the upper plate 407 is facilitated. Through the rotation of the upper circular plate frame 501 and the lower circular plate frame 502, when the first reserved hole 507 on the upper circular plate frame 501 flips to a position overlapping with the first ventilation hole 408, the compressed air above will be ejected along the first ventilation hole 408 and the first reserved hole 507. At this time, the second reserved hole 508 and the second ventilation hole 409 on the lower circular plate frame 502 are in a staggered state. The second reserved hole 509 at the lower position... Air is not blown at position 8 and the second ventilation hole 409. Instead, air is blown at the second ventilation hole 409 and the second reserved hole 508 at the lower position, thus achieving the drying work of the vulcanized tire from top to bottom. This avoids the phenomenon that the vulcanized tire can only be dried after being turned over. By setting a smooth surface on the gear 505, the gear 505 can stop working during the rotation process, which facilitates the stop blowing and drying work of the vulcanized tire from top to bottom. Placing the vulcanized tire on the support ring 510 of the same size can avoid the phenomenon that the second reserved hole 508 is easily blocked when the vulcanized tire is placed directly on it, thereby further improving the air outlet effect at the lower position. By setting the auxiliary structure 5, the intermittent blowing work of the vulcanized tire from top to bottom is facilitated, which further improves the efficiency of the vulcanized tire drying.

[0048] During the drying process of vulcanized tires, the tire is first placed stably on top of the support ring 510. Then, the operator manually rotates the drive rod 62. As the drive rod 62 rotates, it drives the positioning block 61. In this process, the limiting strip 63 plays a crucial role. It slides smoothly along a specific track inside the lower circular frame 502, thus strictly limiting the movement direction of the positioning block 61 and ensuring that it can only move in a predetermined straight line. Both positioning blocks 61 are designed with a unique V-groove structure. When they move towards each other, the V-groove can tightly fit the edge of the disc-shaped vulcanized tire, thereby achieving the desired drying effect. Precise positioning and clamping significantly improves the stability of the vulcanized tire during rotation, resulting in smoother drying and effectively preventing uneven drying caused by tire movement. Anti-slip grooves 65 are specially designed at the contact points between the positioning block 61 and the vulcanized tire, increasing friction and further enhancing clamping stability. The positioning structure 6 allows for quick and convenient clamping after the vulcanized tire is placed, providing a solid foundation for subsequent drying processes and comprehensively improving the stability of the vulcanized tire drying process.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating device for a vulcanizing machine, comprising a base plate (1), characterized in that: A heating coil (3) is fixedly installed on the inner side of the substrate (1), and a mold (2) is fixedly connected to the upper surface of the substrate (1). The substrate also includes: A waste heat utilization structure (4) is provided on the surface of the substrate (1). The waste heat utilization structure (4) includes an outer fixing ring (404) and an inner fixing ring (405) fixedly connected to the lower surface of the substrate (1). An outer folding cylinder (403) is fixedly connected to the lower end of the outer fixing ring (404). An inner folding cylinder (406) is fixedly connected to the lower end of the inner fixing ring (405). An upper plate (407) is fixedly connected to the lower ends of the outer folding cylinder (403) and the inner folding cylinder (406). Two mounting tubes (401) are connected to the side wall of the outer fixing ring (404). A hollow disc (402) is connected to one end of the two mounting tubes (401) that are close to each other. Twelve first ventilation holes (408) are opened on the lower surface of the upper plate (407). Twelve second ventilation holes (409) are opened on the upper surface of the hollow disc (402). An auxiliary structure (5) is provided on the surface of the outer fixing ring (404). The auxiliary structure (5) includes an upper circular plate frame (501) rotatably mounted on the inner side of the upper plate (407), and a lower circular plate frame (502) rotatably mounted on the inner side of the hollow circular plate (402). Both the upper circular plate frame (501) and the lower circular plate frame (502) are composed of a circular plate and two grooved plates. A sliding plate (506) is slidably connected to the inner side of the upper circular plate frame (501). The sliding plate (506) is fixedly connected to the upper end of the lower circular plate frame (502). The surface of the upper circular plate frame (501) is provided with twelve first reserved holes (507). The lower circular plate frame (507) is provided with twelve first reserved holes (507). 2) The surface is provided with twelve second reserved holes (508). The first ventilation hole (408), the second ventilation hole (409), the first reserved hole (507) and the second reserved hole (508) are all diamond-shaped holes. The auxiliary structure (5) also includes a gear ring (509) fixedly connected to the side wall of the lower circular plate frame (502). The side wall of the hollow disc (402) is fixedly connected to a positioning frame (503). The inner side of the positioning frame (503) is fixedly installed with a second motor (504). The output end of the second motor (504) is fixedly connected to a gear (505). The tooth surface of the gear (505) meshes with the tooth surface of the gear ring (509). The positioning structure (6) is provided inside the lower circular plate frame (502). The positioning structure (6) includes two limiting strips (63) that are slidably connected inside the lower circular plate frame (502). The other end of the two limiting strips (63) is fixedly connected to a positioning block (61).

2. The heating device for a vulcanizing machine according to claim 1, characterized in that: The side wall of the upper plate (407) is fixedly connected to two support plates (415), and a telescopic rod (414) is connected between the support plates (415) and the mounting tube (401).

3. The heating device for a vulcanizing machine according to claim 1, characterized in that: The side wall of the outer fixing ring (404) is fixedly connected to a mounting bracket (410), the inner side of the mounting bracket (410) is fixedly installed with a first motor (411), the output end of the first motor (411) is fixedly connected to a drive plate (412), the side wall of the upper plate (407) is fixedly connected to a limit bracket (413), and the drive plate (412) is a rhomboid plate.

4. A heating device for a vulcanizing machine according to claim 3, characterized in that: The lower surface of the limiting frame (413) is provided with a slot.

5. A heating device for a vulcanizing machine according to claim 1, characterized in that: The toothed ring (509) has a partially smooth surface on its sidewall.

6. A heating device for a vulcanizing machine according to claim 1, characterized in that: The positioning structure (6) also includes a drive rod (62) threaded inside the lower circular plate frame (502), and the drive rod (62) is rotatably connected to the positioning block (61).

7. A heating device for a vulcanizing machine according to claim 1, characterized in that: The surface of the positioning block (61) is provided with a V-shaped groove (64).

8. A heating device for a vulcanizing machine according to claim 7, characterized in that: The inner side of the V-groove (64) is uniformly provided with several anti-slip patterns (65).

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