Uniform heating structure of hot plate of flat plate vulcanizing machine

Abstract

The present application relates to the technical fields of flat vulcanizing machine, and discloses a flat vulcanizing machine hot plate uniform heating structure, which comprises a flat vulcanizing machine, a lifting platform is installed on the flat vulcanizing machine, hollow cover plates are fixedly arranged on the upper side of the flat vulcanizing machine and the upper end of the hollow cover plate, heating mechanisms are arranged at the opposite ends of the two groups of hollow cover plates, the heating mechanism comprises a heating plate fixedly arranged on the flat vulcanizing machine, hollow side cover plates are fixedly arranged at the two ends of the heating plate, hydraulic cylinders are fixedly arranged at one end of one group of the two groups of hollow side cover plates, fixed frames are fixedly arranged on one side of the hydraulic cylinder telescopic rods, and guide plates are fixedly arranged at the upper end of the heating plate. The flat vulcanizing machine hot plate uniform heating structure has the advantages that the whole is used in cooperation, oil is simultaneously fed through multiple channels, the flow passage area is large, the flow process is short, the flow resistance of the heat conducting oil is small, and the flow rate is large.

Description

Technical Field

[0001] This invention relates to the field of flat vulcanizing machine technology, and in particular to a uniform heating structure for a hot plate of a flat vulcanizing machine. Background Technology

[0002] Flat vulcanizing machines (commonly referred to as vulcanizing machines or hot presses) are core molding equipment in rubber product processing. They rely on high temperatures to pressurize and heat the mixed rubber blanks within a mold, causing a cross-linking vulcanization reaction that ultimately shapes rubber products with elasticity and strength. The main heating methods are electric heating and heat transfer oil circulation heating.

[0003] Existing flat vulcanizing machines generally use a fixed S-shaped integrated heat transfer oil channel structure for the hot plate. The channel direction cannot be adjusted, and it can only form a single serpentine circulation oil path. This has obvious defects in actual vulcanization production. The heat transfer oil flow path of the single S-shaped oil path is relatively long, and the medium continuously dissipates heat along the flow direction, which easily causes a significant temperature difference between the oil inlet and outlet areas of the hot plate. This results in uneven temperature field distribution on the hot plate surface, leading to inconsistent vulcanization degrees in different parts of the rubber product and causing problems such as insufficient or excessive vulcanization. At the same time, the fixed S-shaped oil path has a constant flow resistance, which cannot flexibly adjust the heat exchange conditions according to the production conditions. The circuit resistance is high during the equipment start-up preheating stage, and the preheating time is long. It is difficult to meet the requirements of both rapid heating and constant temperature vulcanization processes. For rubber products with different thicknesses and different vulcanization cycles, the equipment has poor versatility, high production changeover costs, and cannot meet the needs of flexible production of multiple varieties. Summary of the Invention

[0004] The main objective of this invention is to provide a uniform heating structure for a flat vulcanizing machine hot plate, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A uniform heating structure for a flat vulcanizing machine includes a flat vulcanizing machine with a lifting platform installed on it. Hollow cover plates are fixedly installed on the upper side of the flat vulcanizing machine and the upper end of a hollow cover plate. Heating mechanisms are respectively installed at opposite ends of the two sets of hollow cover plates. Each heating mechanism includes a heating plate fixedly installed on the flat vulcanizing machine. Hollow side cover plates are fixedly installed at both ends of the heating plate and the hollow cover plates. A hydraulic cylinder is fixedly installed at one end of one set of hollow side cover plates. A fixing frame is fixedly installed on one side of the telescopic rod of each set of hydraulic cylinders. A guide plate is fixedly installed on the upper end of the heating plate. A rack is fixedly installed at opposite ends of the two sets of fixing frames. A sliding groove is opened on the upper side of each set of racks. A plurality of transmission gears are meshed on opposite sides of the two sets of racks. A rotating shaft is fixedly installed on the inner side of each of the plurality of transmission gears.

[0006] Preferably, an oil inlet groove is provided inside one side of the heating plate, and an oil outlet groove is provided inside the other side of the heating plate. Several sets of conductive oil grooves are provided between the oil inlet groove and the oil outlet groove inside the heating plate. Oil circuit connectors are fixedly provided on the front side of the heating plate corresponding to the positions of the oil inlet groove and the oil outlet groove. Switching components are provided inside the heating plate near both the upper and lower sides. The number of switching components near the upper side of the heating plate is eight, and the number of switching components near the lower side of the heating plate is seven.

[0007] Preferably, the switching assembly includes a conversion plate movably disposed inside the heating plate. A T-shaped oil guide groove is formed on the inner side of the conversion plate. Circular grooves are formed around the four sides of the conversion plate. A docking nozzle is provided inside each of the four sets of circular grooves. A sealing ring is movably disposed inside each of the four sets of circular grooves. A movable ring is fixedly disposed at one end of each of the four sets of sealing rings near the inner side of the circular groove. A return spring is fixedly disposed between each of the four sets of movable rings and the inner wall of each of the four sets of circular grooves. Positioning blocks are fixedly disposed on the upper and lower sides of each of the four sets of movable rings. Movable openings are formed on the upper and lower sides of the conversion plate corresponding to the positions of the positioning blocks. Movable grooves are formed inside the heating plate corresponding to the positions of the conversion plate. Guide grooves are formed on the upper and lower inner walls of the movable grooves, and four sets of grooves are provided on the guide grooves.

[0008] Preferably, the hydraulic cylinder telescopic rod passes through the hollow side cover plate and is connected to the fixed frame, the two sets of racks are mirror-symmetrically arranged, and the sliding grooves opened on the racks are engaged with the guide plate.

[0009] Preferably, the rack is meshed with the transmission gears, the number of transmission gears on the upper side is eight sets, the number of transmission gears on the lower side is seven sets, and the rotating shaft passes through the heating plate and is fixedly connected to the conversion disk.

[0010] Preferably, the oil inlet groove, the oil outlet groove, and several sets of conductive oil grooves are arranged vertically and evenly, and the two sets of oil circuit connectors are fixedly connected to the oil inlet groove and the oil outlet groove respectively.

[0011] Preferably, the conversion disc is movably adapted in the movable slot, and the upper and lower T-shaped oil guide grooves are respectively set at the connection points of the oil inlet groove, the oil outlet groove, and several sets of conductive oil grooves. In the initial state, the T-shaped oil guide grooves in the conversion discs connect the oil inlet groove, the oil outlet groove, and several sets of conductive oil grooves to form an S-shaped oil circuit. After switching, the T-shaped oil guide grooves in the conversion discs connect the oil inlet groove, the oil outlet groove, and several sets of conductive oil grooves to each other.

[0012] Preferably, the mating nozzle is larger than the mating interface of the oil inlet groove, oil outlet groove, and oil conduction groove; the sealing ring is adapted to the circular groove; the positioning block is adapted to the guide groove; the positioning block passes through the inner side of the movable opening into the groove; and the four sets of grooves are evenly distributed on the guide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Two sets of hydraulic cylinders push two sets of fixed frames and racks to slide laterally along the guide plate. The two moving racks drive the upper and lower meshing transmission gears to rotate, which in turn drives the connected rotating shaft to rotate the position of the switching component inside the heating plate, thereby realizing the oil circuit switching in the heating plate. During the switching process, the rotating shaft drives the conversion disk to rotate 90 degrees. At this time, the positioning block disengages from the groove and moves into the guide groove. While moving in the guide groove, the positioning block is pushed to slide along the movable opening. The movable ring squeezes the return spring, and at the same time, the sealing ring partially retracts into the circular groove. This causes the conversion disk to continuously rub against the sealing ring during rotation, which seriously affects the service life of the structure. After rotating 90 degrees, the positioning block is back in the groove. At this time, the T-shaped oil guide grooves in the several conversion disks after the switch connect the oil inlet groove, oil outlet groove, and several sets of conductive oil grooves together. Multiple channels enter the oil simultaneously, resulting in a large flow cross-sectional area, short flow path, low flow resistance of heat transfer oil, and large flow rate. Switching to this mode during the start-up phase allows the heating plate to heat up quickly and as a whole, significantly shortening the equipment preheating waiting time and improving start-up production efficiency. The squeezed return spring pushes the sealing ring outward, ensuring that the sealing ring fits tightly at the joint, preventing the oil circuit from not being sealed properly. Heat transfer oil is introduced through the oil inlet connector installed on one side of the oil inlet tank. Through the connection of the oil inlet tank, oil outlet tank, and several sets of conduction oil tanks, an S-shaped oil flow is achieved in the initial state, which uniformly heats the entire heating plate. After switching by the switching component, the oil inlet tank, oil outlet tank, and several sets of conduction oil tanks in the heating plate become interconnected. The oil circuit is switched according to the working conditions, reducing the continuous high-load working time of the oil pump, reducing the energy consumption of the heat transfer oil circulation system, and enabling uniform and rapid heating of the heating plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a uniform heating structure for a flat vulcanizing machine hot plate according to the present invention. Figure 2 This is a partial structural schematic diagram of a uniform heating structure for a flat vulcanizing machine hot plate according to the present invention; Figure 3 This is a schematic diagram of the heating mechanism structure of a uniform heating structure for a hot plate of a flat vulcanizing machine according to the present invention; Figure 4 This is a schematic diagram of the inner structure of the heating plate of a flat vulcanizing machine with uniform heating structure according to the present invention. Figure 5 This invention relates to a uniform heating structure for a flat vulcanizing machine hot plate. Figure 4A magnified structural diagram of part A; Figure 6 This is a schematic diagram of the inner structure of the conversion plate of a uniform heating structure for a flat vulcanizing machine according to the present invention. Figure 7 This is a partially enlarged structural diagram of a switching component for uniform heating of a hot plate in a flat vulcanizing machine according to the present invention. Figure 8 This is a schematic diagram of the oil circuit structure inside the heating plate of a flat vulcanizing machine's hot plate uniform heating structure according to the present invention. Figure 9 This is a schematic diagram of the oil circuit switching structure inside the heating plate of a flat vulcanizing machine according to the present invention.

[0015] In the diagram: 1. Flat vulcanizing machine; 2. Lifting platform; 3. Hollow cover plate; 4. Heating mechanism; 41. Heating plate; 42. Hollow side cover plate; 43. Hydraulic cylinder; 44. Fixed frame; 45. Guide plate; 46. Rack; 47. Slide groove; 48. Transmission gear; 49. Rotating shaft; 410. Oil inlet groove; 411. Oil outlet groove; 412. Conducting oil groove; 413. Oil circuit connector; 414. Switching component; 4141. Converter plate; 4142. T-shaped oil guide groove; 4143. Circular groove; 4144. Connecting nozzle; 4145. Sealing ring; 4146. Movable ring; 4147. Return spring; 4148. Positioning block; 4149. Movable opening; 41410. Movable groove; 41411. Guide groove; 41412. Groove. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship as a relative relationship of orientation or position, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0018] Please see Figures 1-9One embodiment of the present invention provides a uniform heating structure for a flat vulcanizing machine, comprising a flat vulcanizing machine 1, a lifting platform 2 mounted on the flat vulcanizing machine 1, and hollow cover plates 3 fixedly mounted on the upper side of the flat vulcanizing machine 1 and the upper end of hollow cover plates 3. Heating mechanisms 4 are respectively provided at opposite ends of the two sets of hollow cover plates 3. The heating mechanism 4 includes a heating plate 41 fixedly mounted on the flat vulcanizing machine 1, and hollow side cover plates 42 fixedly mounted at both ends of the heating plate 41 and the hollow cover plates 3. Hydraulic cylinders 43 are fixedly installed at one end of each of the two sets of hydraulic cylinders 43. Fixed frames 44 are fixedly installed on one side of the telescopic rods of the two sets of hydraulic cylinders 43. Guide plates 45 are fixedly installed on the upper end of the heating plate 41. Racks 46 are fixedly installed at opposite ends of the two sets of fixed frames 44. Slide grooves 47 are opened on the upper side of the two sets of racks 46. Several sets of transmission gears 48 are meshed on opposite sides of the two sets of racks 46. Rotating shafts 49 are fixedly installed on the inner side of the several sets of transmission gears 48.

[0019] The hydraulic cylinder 43 telescopic rod passes through the hollow side cover plate 42 and is connected to the fixed frame 44. The two sets of racks 46 are mirror-symmetrically arranged. The slide groove 47 opened on the rack 46 is engaged with the guide plate 45. The rack 46 is engaged with the transmission gear 48. There are eight sets of transmission gears 48 on the upper side and seven sets on the lower side. The rotating shaft 49 passes through the heating plate 41 and is fixedly connected to the conversion plate 4141.

[0020] Two sets of hydraulic cylinders 43 push the two sets of fixed frames 44 and racks 46 connected to slide laterally along the guide plate 45. The two sets of moving racks 46 drive the upper and lower meshing transmission gears 48 to rotate, thereby driving the connected rotating shaft 49 to rotate the position of the switching component 414 inside the heating plate 41, thus realizing the oil circuit switching operation in the heating plate 41.

[0021] An oil inlet groove 410 is provided inside one side of the heating plate 41, and an oil outlet groove 411 is provided inside the other side of the heating plate 41. Several sets of conductive oil grooves 412 are provided between the oil inlet groove 410 and the oil outlet groove 411 inside the heating plate 41. Oil circuit connectors 413 are fixedly provided on the front side of the heating plate 41 at the positions corresponding to the oil inlet groove 410 and the oil outlet groove 411. Switching components 414 are provided inside the heating plate 41 near the upper and lower sides. There are eight sets of switching components 414 near the upper side inside the heating plate 41, and seven sets of switching components 414 near the lower side inside the heating plate 41.

[0022] The oil inlet groove 410, the oil outlet groove 411 and several sets of conductive oil grooves 412 are arranged vertically and evenly, and two sets of oil circuit connectors 413 are fixedly connected to the oil inlet groove 410 and the oil outlet groove 411 respectively.

[0023] Heat transfer oil is introduced through the oil inlet connector 413 installed on one side of the oil inlet 410. The initial S-shaped oil flow is achieved through the connection of the oil inlet 410, the oil outlet 411, and several sets of conductive oil channels 412. Figure 8 The heating plate 41 is uniformly heated. After switching by the switching component 414, the oil inlet groove 410, oil outlet groove 411 and several sets of conduction oil grooves 412 in the heating plate 41 become interconnected. The oil circuit is switched according to the working conditions, reducing the continuous high load working time of the oil pump, reducing the energy consumption of the heat transfer oil circulation system, and performing uniform and rapid heating of the heating plate 41.

[0024] The switching assembly 414 includes a switching plate 4141 movably disposed inside the heating plate 41. A T-shaped oil guide groove 4142 is formed on the inner side of the switching plate 4141. Circular grooves 4143 are formed around the four sides of the switching plate 4141. Connecting nozzles 4144 are respectively provided inside the four sets of circular grooves 4143. Sealing rings 4145 are movably disposed inside the four sets of circular grooves 4143. Movable rings 4146 are fixedly disposed at one end of each of the four sets of sealing rings 4145 near the inner side of the circular grooves 4143. The four sets of movable rings 4146 are connected to… A reset spring 4147 is fixedly installed between the inner walls of the four sets of circular grooves 4143. A positioning block 4148 is fixedly installed on the upper and lower sides of the four sets of movable rings 4146. Movable openings 4149 are opened on the upper and lower sides of the conversion plate 4141 corresponding to the positions of the positioning blocks 4148. Movable grooves 41410 are opened inside the heating plate 41 corresponding to the positions of the conversion plate 4141. Guide grooves 41411 are opened on the upper and lower inner walls of the movable grooves 41410. Four sets of grooves 41412 are provided on the guide grooves 41411.

[0025] The conversion disc 4141 is movably adapted in the movable slot 41410. The upper and lower T-shaped oil guide grooves 4142 are respectively located at the connection points between the oil inlet slot 410, the oil outlet slot 411, and several sets of conductive oil grooves 412. In the initial state, the T-shaped oil guide grooves 4142 in the several sets of conversion discs 4141 connect the oil inlet slot 410, the oil outlet slot 411, and several sets of conductive oil grooves 412 to form an S-shaped oil circuit. After switching, the T-shaped oil guide grooves 4142 in the several sets of conversion discs 4141 connect the oil inlet slot 410... The oil outlet groove 411 and several sets of conduction oil grooves 412 are interconnected. The mating nozzle 4144 is larger than the mating interface of the oil inlet groove 410, the oil outlet groove 411, and the conduction oil groove 412. The sealing ring 4145 is adapted to the circular groove 4143. The sealing ring 4145 is made of high temperature resistant material. The positioning block 4148 is adapted to the guide groove 41411. The positioning block 4148 passes through the inner side of the movable opening 4149 to the groove 41412. The four sets of grooves 41412 are evenly distributed on the guide groove 41411.

[0026] During the switching process, the rotating shaft 49 drives the conversion disk 4141 to rotate 90 degrees. At this time, the positioning block 4148 disengages from the groove 41412 and moves into the guide groove 41411. While moving in the guide groove 41411, the positioning block 4148 is pushed to slide along the movable opening 4149. The movable ring 4146 squeezes the return spring 4147, and at the same time, the sealing ring 4145 partially retracts into the circular groove 4143, causing the conversion disk 4141 to continuously rub against the sealing ring 4145 during rotation, which seriously affects the service life of the structure. After rotating 90 degrees, the positioning block 4148 is aligned with the groove 41412 again. At this time, the T-shaped oil guide grooves 4142 in the several conversion disks 4141 after switching connect the oil inlet groove 410, the oil outlet groove 411, and several sets of conductive oil grooves 412 together. Figure 9 With multiple channels for simultaneous oil intake, the flow cross-sectional area is large and the flow path is short. The heat transfer oil has low flow resistance and a large flow rate. When switching to this mode during startup, the heating plate 41 heats up quickly and as a whole, which greatly shortens the equipment preheating waiting time and improves startup production efficiency. Meanwhile, the squeezed return spring 4147 pushes the sealing ring 4145 outward, so that the sealing ring 4145 fits tightly at the joint, avoiding the situation where the oil circuit cannot be sealed properly.

[0027] Working principle: During use, two sets of hydraulic cylinders 43 push the two sets of fixed frames 44 and racks 46 connected to slide laterally along the guide plate 45. The two moving racks 46 drive the upper and lower meshing transmission gears 48 to rotate, which drives the connected rotating shaft 49 to rotate the position of the switching component 414 inside the heating plate 41, realizing the oil circuit switching in the heating plate 41. During the switching process, the rotating shaft 49 drives the conversion disk 4141 to rotate 90 degrees. At this time, the positioning block 4148 disengages from the groove 41412 and moves to the guide groove 4. In step 1411, when moving in the guide groove 41411, the positioning block 4148 is pushed to slide along the movable opening 4149, the movable ring 4146 squeezes the return spring 4147, and at the same time the sealing ring 4145 partially retracts into the circular groove 4143, causing the conversion disc 4141 to continuously rub against the sealing ring 4145 during rotation, which seriously affects the service life of the structure. After rotating ninety degrees, the positioning block 4148 corresponds to the groove 41412 again. At this time, the T-shaped oil guide groove 41 in the switched conversion discs 4141... 42 connects the oil inlet trough 410, the oil outlet trough 411, and several sets of conductive oil troughs 412 together, allowing multiple channels to enter oil simultaneously. This results in a large flow cross-sectional area, short flow path, low flow resistance, and high flow rate of the heat transfer oil. Switching to this mode during startup allows the heating plate 41 to heat up rapidly, significantly reducing preheating time and improving startup efficiency. Meanwhile, the compressed return spring 4147 pushes the sealing ring 4145 outwards, ensuring a tight fit between the sealing ring 4145 and the mating point, preventing incomplete sealing of the oil passage. Additionally, a [missing information - likely a device or mechanism] installed on one side of the oil inlet trough 410... Heat transfer oil is introduced through the oil line connector 413. The oil inlet groove 410, oil outlet groove 411 and several sets of conduction oil grooves 412 are connected to achieve the initial S-shaped oil flow, which uniformly heats the entire heating plate 41. After switching by the switching component 414, the oil inlet groove 410, oil outlet groove 411 and several sets of conduction oil grooves 412 in the heating plate 41 become interconnected. The oil line is switched according to the working conditions, which reduces the continuous high load working time of the oil pump, reduces the energy consumption of the heat transfer oil circulation system, and enables the heating plate 41 to be heated evenly and quickly.

[0028] The control and connection methods of the electronic equipment and component structures such as the flat vulcanizing machine 1, lifting platform 2, hollow cover plate 3, heating plate 41, and hydraulic cylinder 43 in this invention are common knowledge in the field. Their working principles are well-known technologies, and the appropriate model is selected according to actual use, so they will not be explained in detail.

[0029] 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 uniform heating structure for a flat vulcanizing machine, comprising a flat vulcanizing machine (1), characterized in that: A lifting platform (2) is installed on the flat vulcanizing machine (1). Hollow cover plates (3) are fixedly installed on the upper side of the flat vulcanizing machine (1) and the upper end of the hollow cover plate (3). A heating mechanism (4) is respectively installed at one end of each of the two sets of hollow cover plates (3). The heating mechanism (4) includes a heating plate (41) fixedly installed on the flat vulcanizing machine (1). Hollow side cover plates (42) are fixedly installed at both ends of the heating plate (41) and the hollow cover plate (3). One end of one of the two sets of hollow side cover plates (42) is fixedly installed with a Hydraulic cylinders (43), each of the two sets of hydraulic cylinders (43) has a fixed frame (44) fixed on one side of the telescopic rod, and a guide plate (45) fixed on the upper end of the heating plate (41). Each of the two sets of fixed frames (44) has a rack (46) fixed on one side opposite to the other. Each of the two sets of racks (46) has a slide groove (47) on the upper side. Each of the two sets of racks (46) has a number of transmission gears (48) meshing on one side opposite to the other. Each of the number of transmission gears (48) has a rotating shaft (49) fixed on the inner side of the inner side.

2. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 1, characterized in that: The heating plate (41) has an oil inlet groove (410) on one side and an oil outlet groove (411) on the other side. Several sets of conductive oil grooves (412) are provided between the oil inlet groove (410) and the oil outlet groove (411) inside the heating plate (41). Oil connectors (413) are fixedly provided on the front side of the heating plate (41) at the positions corresponding to the oil inlet groove (410) and the oil outlet groove (411). Switching components (414) are provided inside the heating plate (41) near the upper and lower sides. The number of switching components (414) near the upper side inside the heating plate (41) is eight, and the number of switching components (414) near the lower side inside the heating plate (41) is seven.

3. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 2, characterized in that: The switching assembly (414) includes a switching plate (4141) movably disposed inside the heating plate (41). A T-shaped oil guide groove (4142) is provided on the inner side of the switching plate (4141). Circular grooves (4143) are respectively provided around the four sides of the switching plate (4141). Connecting nozzles (4144) are respectively provided inside the four sets of circular grooves (4143). Sealing rings (4145) are movably disposed inside the four sets of circular grooves (4143). Movable rings (4146) are fixedly disposed at one end of each of the four sets of sealing rings (4145) near the inner side of the circular grooves (4143). The four sets of movable rings (4146) are... 6) A reset spring (4147) is fixedly installed between the inner walls of the four sets of circular grooves (4143). Positioning blocks (4148) are fixedly installed on the upper and lower sides of the four sets of movable rings (4146). Movable openings (4149) are opened on the upper and lower sides of the conversion plate (4141) corresponding to the positions of the positioning blocks (4148). Movable grooves (41410) are opened inside the heating plate (41) corresponding to the positions of the conversion plate (4141). Guide grooves (41411) are opened on the upper and lower inner walls of the movable grooves (41410). Four sets of grooves (41412) are provided on the guide grooves (41411).

4. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 2, characterized in that: The telescopic rod of the hydraulic cylinder (43) passes through the hollow side cover plate (42) and is connected to the fixed frame (44). The two sets of racks (46) are mirror-symmetrically arranged. The slide groove (47) opened on the rack (46) is engaged with the guide plate (45).

5. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 2, characterized in that: The rack (46) is meshed with the transmission gear (48). There are eight sets of transmission gears (48) on the upper side and seven sets of transmission gears (48) on the lower side. The rotating shaft (49) passes through the heating plate (41) and is fixedly connected to the conversion disk (4141).

6. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 2, characterized in that: The oil inlet groove (410), oil outlet groove (411) and several sets of conductive oil grooves (412) are arranged vertically and evenly, and the two sets of oil circuit connectors (413) are fixedly connected to the oil inlet groove (410) and oil outlet groove (411) respectively.

7. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 3, characterized in that: The conversion disk (4141) is movably adapted in the movable slot (41410). The upper and lower T-shaped oil guide grooves (4142) are respectively set at the connection points of the oil inlet groove (410), the oil outlet groove (411), and several sets of conductive oil grooves (412). In the initial state, the T-shaped oil guide grooves (4142) in the several sets of conversion disks (4141) connect the oil inlet groove (410), the oil outlet groove (411), and several sets of conductive oil grooves (412) to form an S-shaped oil circuit. After switching, the T-shaped oil guide grooves (4142) in the several sets of conversion disks (4141) connect the oil inlet groove (410), the oil outlet groove (411), and several sets of conductive oil grooves (412) to each other.

8. The uniform heating structure of a flat vulcanizing machine hot plate according to claim 3, characterized in that: The connecting nozzle (4144) is larger than the connecting interfaces of the oil inlet groove (410), the oil outlet groove (411), and the transmission oil groove (412). The sealing ring (4145) is adapted to the circular groove (4143). The positioning block (4148) is adapted to the guide groove (41411). The positioning block (4148) passes through the inner side of the movable opening (4149) into the groove (41412). The four sets of grooves (41412) are evenly distributed on the guide groove (41411).

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