Heating structure and drum vulcanizing machine for continuous vulcanization of rubber

Abstract

The present invention provides a heating structure for continuous vulcanization of rubber and a drum vulcanizer. The heating structure for continuous vulcanization of rubber includes a vulcanization drum for continuous vulcanization of rubber, and the vulcanization drum includes a rotating drum, a partition frame, and a spray pipe. The rotating drum has a cylindrical cavity. The partition frame and the cylindrical cavity are combined to form a plurality of fan-shaped cavities arranged in annular intervals around the axis of the rotating drum. The partition frame also has a central cavity and an air outlet. There are a plurality of spray pipes, each corresponding to each fan-shaped cavity, each having a plurality of spray parts, and each facing the side wall of the rotating drum. The heating structure for continuous vulcanization of rubber provided by the present invention can effectively avoid the occurrence of dead corners inside the rotating drum through the structure of the vulcanization drum, while ensuring full utilization of steam heat, ensuring heat exchange effect, and ensuring that the sheet rubber transferred on the outer wall of the rotating drum is evenly heated, and has strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of drum vulcanizers, and in particular relates to a heating structure for continuous vulcanization of rubber and a drum vulcanizer. Background Art

[0002] Vulcanization is a key step to stabilize rubber products and improve their physical and mechanical properties. During the vulcanization process, rubber molecules undergo cross-linking reactions under the action of heat, oxygen or other chemical reagents to form a three-dimensional network structure, thereby improving the strength and elasticity of the rubber. For continuous production lines of sheet rubber, a drum vulcanizer is usually used. A drum vulcanizer is a device used for continuous vulcanization of strip rubber. A drum vulcanizer has a vulcanizing drum that can wind and heat the sheet rubber.

[0003] In the prior art, regarding the heating of the vulcanization drum, steam heating has been widely used due to its good economy. Specifically, the vulcanization drum has a cavity inside, which is connected to the axial end of the vulcanization drum through a steam pipeline to transport high-temperature steam to the interior of the vulcanization drum. However, the heating process involves the continuous inflow and outflow of steam, which will cause dead corners in the cavity of the vulcanization drum, resulting in uneven temperature on the vulcanization drum, affecting product quality and having poor practicality. Moreover, the heat exchange effect between the steam entering the cavity of the vulcanization drum and the vulcanization drum is poor, and a large amount of steam directly flows out at the other axial end, resulting in low steam utilization and poor practicality. ‌ Summary of the invention

[0004] The embodiment of the present invention provides a heating structure for continuous vulcanization of rubber and a drum vulcanizer, aiming to solve the problem of poor practicality of the existing drum vulcanizer using steam to heat the vulcanization drum.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a heating structure for continuous vulcanization of rubber, including a vulcanization drum, wherein the vulcanization drum includes a rotating cylinder, a partition frame and a spray pipe; wherein,

[0006] The rotating drum is horizontally rotatably arranged on the drum vulcanizer; the rotating drum has a cylindrical cavity;

[0007] The partition frame is arranged in the cylindrical cavity, and the partition frame and the cylindrical cavity are combined to form a plurality of fan-shaped cavities arranged in annular intervals around the axis of the drum; the curved surface of each fan-shaped cavity away from the axis of the drum is set as a heating surface; the partition frame also has a central cavity connected to each fan-shaped cavity for steam to be discharged, and has an outlet connected to the central cavity;

[0008] There are multiple injection pipes, each of which corresponds to each fan-shaped cavity one by one, and each of the injection pipes passes through the corresponding fan-shaped cavity along the axial direction of the rotating drum. Each of the injection pipes has multiple injection parts, and each of the injection parts is arranged at intervals along the axial direction of the rotating drum, and each of the injection parts faces the corresponding heating surface; each of the injection pipes is connected to the steam pipeline through the air transfer component arranged on the partition frame.

[0009] In a possible implementation, two ends of the rotating drum are provided with transfer shafts, and a cylinder cavity communicating with the cylindrical cavity is provided in the transfer shaft.

[0010] In a possible implementation, the partition frame includes:

[0011] There are multiple partition plates, each of which is arranged at annular intervals on the inner wall surface of the cylindrical cavity around the axis of the drum, and each of the partition plates is arranged along the radial direction of the drum; the fan-shaped cavity is formed between any two adjacent partition plates, and the inner wall surface of the cylindrical cavity between any two adjacent partition plates is the heating surface;

[0012] The end plates are respectively arranged at the two ends of each of the partition plates along the axial direction of the rotating drum, and one of the end plates is provided with an air outlet pipe that can penetrate one of the cylinder cavities, and the pipe mouth of the air outlet pipe is the air outlet.

[0013] In a possible implementation, the partition frame also includes a bottom plate, and a plurality of the bottom plates are provided, each of the bottom plates corresponds to each of the fan-shaped cavities one by one, and each of the bottom plates is connected to the corresponding two adjacent partition plates and to the two end plates to seal each of the fan-shaped cavities; a plurality of one-way air valves are evenly distributed on the bottom plate; and each of the bottom plates encloses the central cavity.

[0014] In a possible implementation, both ends of each of the injection pipes are respectively fixed on the two end plates and pass through the two end plates; a plurality of nozzles that can cover the entire corresponding heating surface are arranged at intervals on each of the injection pipes; the nozzles are the injection parts.

[0015] In a possible implementation, the gas transmission component includes:

[0016] A fixed cylinder, one end of which is fixedly mounted on the other end plate and arranged in line with the axis of the rotating cylinder, and the other end of which extends out through the corresponding transfer shaft cylinder cavity and is sealingly and rotatably connected to the steam pipeline;

[0017] There are multiple air delivery pipes, each of which corresponds to each of the injection pipes one by one. One end of each of the air delivery pipes is connected to the fixed cylinder, and the other end is connected to the corresponding side wall of the injection pipe.

[0018] In a possible implementation, one end of each of the injection pipes communicating with the gas transmission component is provided with an air inlet, and the air inlet is arranged along the radial direction of the injection pipe;

[0019] The injection pipe is also provided with an adjusting component, which includes:

[0020] An adjusting screw rod is arranged along the axial direction of the injection pipe and is threadedly connected to one end of the injection pipe, and one end of the adjusting screw rod extends into the injection pipe;

[0021] The piston is slidably arranged in the injection pipe and is rotationally connected to the end of the adjusting screw. The piston is used to slide along the axial direction of the injection pipe driven by the adjusting screw to adjust the opening of the air inlet.

[0022] In a possible implementation, the heating structure for continuous vulcanization of rubber also includes a preheating roller, which is rotatably arranged on the drum vulcanizer through connecting shafts arranged at both ends, and is arranged parallel to the rotating drum at intervals; a cylinder cavity is arranged inside the preheating roller, and connecting cavities connected to the cylinder cavity are arranged on the two connecting shafts, one of the connecting shafts is connected to the air outlet through a connecting pipeline; the preheating roller is used to supply the sheet rubber in a serpentine shape together with the rotating drum, and preheat the sheet rubber before it enters the rotating drum.

[0023] The present invention also provides a drum vulcanizer, comprising the above-mentioned heating structure for continuous vulcanization of rubber.

[0024] In the heating structure for continuous vulcanization of rubber provided by the present implementation, a cylindrical cavity is divided into a plurality of annularly arranged fan-shaped cavities by a partition frame arranged in the rotating drum, and an injection pipe is arranged in each fan-shaped cavity, which can ensure that the steam in the steam pipeline is respectively introduced into each injection pipe through the gas transmission component, effectively ensuring the uniform distribution of steam and the utilization rate of steam. At the same time, the multiple injection parts arranged on each injection pipe can face the heating surface, ensuring the contact between the steam and the rotating drum, and further ensuring the utilization rate of steam. The structure of this vulcanization drum can effectively avoid the occurrence of dead corners inside the rotating drum, while ensuring the full utilization of the steam heat, ensuring the heat exchange effect, and ensuring that the sheet rubber transferred on the outer wall of the rotating drum is evenly heated, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the heating structure for continuous vulcanization of rubber provided in an embodiment of the present invention Figure 1 ;

[0026] Figure 2 Schematic diagram of the heating structure for continuous vulcanization of rubber provided in an embodiment of the present invention Figure 2 (an end cap at one end of the hidden drum);

[0027] Figure 3 A schematic plan view of a heating structure for continuous vulcanization of rubber provided in an embodiment of the present invention (with a preheating roller assembly);

[0028] Figure 4 A schematic side cross-sectional view of a heating structure for continuous vulcanization of rubber provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the front and cross-sectional structure of a heating structure for continuous vulcanization of rubber provided by an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100, vulcanizing drum; 10, rotating drum; 11, transfer shaft;

[0032] 20. partition frame; 21. partition plate; 22. end plate; 23. bottom plate; 24. air outlet pipe; 25. fan-shaped cavity; 26. heating surface; 27. central cavity; 28. one-way air valve;

[0033] 30. injection pipe; 31. nozzle;

[0034] 40. gas transmission component; 41. fixing cylinder; 42. gas transmission pipe;

[0035] 50. Adjusting component; 51. Adjusting screw; 52. Piston;

[0036] 600, preheating roller;

[0037] 700. Rubber sheets. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] Please also read Figure 1 , Figure 2 and Figure 4, the heating structure for continuous vulcanization of rubber provided by the present invention is now described. The heating structure for continuous vulcanization of rubber includes a vulcanization drum 100, and the vulcanization drum 100 includes a rotating drum 10, a partition frame 20 and a spray pipe 30. Among them, the rotating drum 10 is horizontally rotatably arranged on a drum vulcanizer. The rotating drum 10 has a cylindrical cavity. The partition frame 20 is arranged in the cylindrical cavity, and the partition frame 20 and the cylindrical cavity are combined to form a plurality of fan-shaped cavities 25 arranged in annular intervals around the axis of the rotating drum 10. The curved surface of each fan-shaped cavity 25 away from the axis of the rotating drum 10 is set as a heating surface 26. The partition frame 20 also has a central cavity 27 connected with each fan-shaped cavity 25 for steam to be discharged, and has an air outlet connected with the central cavity 27. There are a plurality of injection pipes 30, each corresponding to each fan-shaped cavity 25, and each injection pipe 30 penetrates the corresponding fan-shaped cavity 25 along the axial direction of the drum 10. Each injection pipe 30 has a plurality of injection parts, each injection part is arranged at intervals along the axial direction of the drum 10, and each injection part faces the corresponding heating surface 26. Each injection pipe 30 is connected to the steam pipeline through the gas transmission component 40 arranged on the partition frame 20.

[0040] Compared with the prior art, the heating structure for continuous vulcanization of rubber provided in this embodiment divides the cylindrical cavity into a plurality of annularly arranged fan-shaped cavities 25 by means of the partition frame 20 arranged in the drum 10, and at the same time, an injection pipe 30 is arranged in each fan-shaped cavity 25, which can ensure that the steam in the steam pipeline is respectively introduced into each injection pipe 30 through the gas transmission component 40, effectively ensuring the uniform distribution of steam and the utilization rate of steam. At the same time, the multiple injection parts arranged on each injection pipe 30 can face the heating surface 26, ensuring the contact between the steam and the drum 10, and further ensuring the utilization rate of steam. The structure of this vulcanization drum 100 can effectively avoid the occurrence of dead corners inside the drum 10, while ensuring the full utilization of the steam heat, ensuring the heat exchange effect, and ensuring that the sheet rubber 700 transferred on the outer wall of the drum 10 is evenly heated, and has strong practicality.

[0041] In some embodiments, the drum 10 may be used as follows: Figure 1 and Figure 2 See the structure shown. Figure 1 and Figure 2 , a transfer shaft 11 is provided at both ends of the rotating drum 10, and a barrel cavity connected to the cylindrical cavity is provided in the transfer shaft 11. The setting of the transfer shaft 11 can ensure the rotation connection with the drum vulcanizer, and the transfer shaft 11 and the drum vulcanizer can be connected through a rolling bearing. The barrel cavity involved can ensure the connection with the gas transmission component 40, and can also ensure the extraction of steam.

[0042] In some embodiments, the partition frame 20 may be formed as follows: Figure 4 See the structure shown. Figure 4The partition frame 20 includes a partition plate 21 and an end plate 22. There are multiple partition plates 21, and each partition plate 21 is arranged on the inner wall surface of the cylindrical cavity around the axis of the drum 10 in an annular interval, and each partition plate 21 is arranged along the radial direction of the drum 10. A fan-shaped cavity 25 is formed between any two adjacent partition plates 21, and the inner wall surface of the cylindrical cavity between any two adjacent partition plates 21 is a heating surface 26. The end plates 22 are respectively arranged at both ends of each partition plate 21 along the axial direction of the drum 10, and one of the end plates 22 is provided with an outlet pipe 24 that can penetrate one of the cylinder cavities, and the pipe mouth of the outlet pipe 24 is an outlet.

[0043] The plurality of partition plates 21 are arranged at intervals in an annular manner, and the plurality of fan-shaped cavities 25 formed by the division can ensure that the steam ejected from each injection pipe 30 can be fixedly corresponding to a heating surface 26, thereby effectively ensuring the uniform distribution of heat on the side wall of the drum 10 and ensuring that the sheet rubber 700 is uniformly heated. The two end plates 22 can seal the fan-shaped cavities 25 at both ends of each partition plate 21 to ensure that the steam exiting the fan-shaped cavities 25 is all exited by the outlet pipe 24.

[0044] It should be noted that each of the end plates 22 is a cylindrical structure, and its outer edge is sealed and fixedly connected to the inner wall of the cylindrical cavity. Specifically, an annular ring can be set on the inner wall of the cylindrical cavity, and a notch is provided on the annular ring for inserting each dividing plate, and the end plate 22 can be connected to the annular ring by bolts.

[0045] In some embodiments, the partition frame 20 may be formed as follows: Figure 4 See the structure shown. Figure 4 The partition frame 20 further includes a bottom plate 23, and a plurality of bottom plates 23 are provided, each bottom plate 23 corresponds to each fan-shaped cavity 25, and each bottom plate 23 is connected to two corresponding adjacent partition plates 21 and two end plates 22 to seal each fan-shaped cavity 25. A plurality of one-way air-permeable valves 28 are evenly distributed on the bottom plates 23. Each bottom plate 23 encloses a central cavity 27.

[0046] The multiple bottom plates 23 can reseal the fan-shaped cavities 25 so that each fan-shaped cavity 25 forms an independent closed space. This structure can prevent the heat in a fan-shaped cavity 25 from being affected by other fan-shaped cavities 25, so as to ensure the temperature of the heating surface 26 corresponding to each fan-shaped cavity 25 is stable. The setting of each one-way air-permeable valve 28 can only allow the steam in the fan-shaped cavity 25 to flow into the central cavity 27, so as to prevent the temperature in the fan-shaped cavity 25 from being affected by the central cavity 27, and ensure the full use of the steam heat.

[0047] In some embodiments, the injection pipe 30 may be Figures 4 to 5 See the structure shown. Figures 4 to 5The two ends of each spray pipe 30 are respectively fixed on the two end plates 22 and pass through the two end plates 22. A plurality of spray heads 31 are arranged at intervals on each spray pipe 30 to cover the entire corresponding heating surface 26. The spray head 31 is a spraying part.

[0048] The spray pipe 30 is fixed on the two end plates 22, and the end portion extends out of the end plates 22, which can ensure the stability of the spray pipe 30 after being fixed, and also facilitate the connection between the spray pipe 30 and the gas transmission component 40, with a simple structure, easy installation, and strong practicality. The spray head 31 faces the heating surface 26, which can ensure that the steam entering the fan-shaped cavity 25 contacts the heating surface 26, so as to ensure the heat exchange effect of the steam and the utilization rate of the steam.

[0049] In some embodiments, the gas transmission component 40 may be Figure 2 See the structure shown. Figure 2 The gas transmission component 40 includes a fixed cylinder 41 and a gas delivery pipe 42. One end of the fixed cylinder 41 is fixed on the other end plate 22 and is arranged in line with the axis of the rotating cylinder 10. The other end of the fixed cylinder 41 extends out from the cylinder cavity of the corresponding adapter shaft 11 and is sealed and rotatably connected to the steam pipeline. There are multiple gas delivery pipes 42, each gas delivery pipe 42 corresponds to each injection pipe 30 one by one, one end of each gas delivery pipe 42 is connected to the fixed cylinder 41, and the other end is connected to the side wall of the corresponding injection pipe 30.

[0050] The fixed cylinder 41 is coaxially connected to the end plate 22 without an air outlet, and the end thereof extends out of the cylinder cavity corresponding to the adapter shaft 11. The fixed cylinder 41 can allow steam to flow to each injection pipe 30 through each gas pipe 42, thereby ensuring the independent operation of each injection pipe 30 and ensuring the utilization rate of steam.

[0051] The fixed cylinder 41 rotates synchronously with the rotating cylinder 10, so the extended end of the fixed cylinder 41 needs to be rotationally connected to the steam supply pipeline, and it is a sealed rotational connection. This connection structure is a prior art and will not be described here.

[0052] In some embodiments, the injection pipe 30 may be Figure 2 and Figure 5 See the structure shown. Figure 2 and Figure 5 One end of each injection pipe 30 communicating with the gas transmission component 40 is provided with an air inlet, and the air inlet is arranged along the radial direction of the injection pipe 30.

[0053] The injection pipe 30 is also provided with an adjustment component 50, which includes an adjustment screw 51 and a piston 52. The adjustment screw 51 is arranged along the axial direction of the injection pipe 30 and is threadedly connected to one end of the injection pipe 30, and one end of the adjustment screw 51 extends into the injection pipe 30. The piston 52 is slidably arranged in the injection pipe 30 and is rotatably connected to the end of the adjustment screw 51. It can slide along the axial direction of the injection pipe 30 driven by the adjustment screw 51 to adjust the opening of the air inlet.

[0054] The steam in the steam supply pipeline has a certain pressure, so it can be guaranteed to enter each injection pipe 30 respectively. However, each injection pipe 30 may be blocked due to impurities or corrosion after long-term operation. At this time, the piston 52 can be moved by adjusting the screw 51 to open the opening of the air inlet, or the air inlet on other injection pipes 30 can be closed to increase the pressure of the corresponding injection pipe 30 to ensure the impact on the blockage and facilitate subsequent maintenance. In addition, after long-term use, blockage is formed in individual injection pipes 30. At this time, the air intake volume will be less than the air intake volume of other injection pipes 30. At this time, the air intake opening of other injection pipes 30 can be reduced, and the air intake opening of the injection pipe 30 with a small air intake volume can be increased to balance the amount of steam entering each injection pipe 30 and ensure uniform heat distribution.

[0055] It should be noted that a temperature sensor may be provided in each sector cavity 25 to ensure real-time monitoring of the temperature in each sector cavity 25. When the temperature is lower than the set temperature, the opening of the corresponding air inlet of the injection pipe 30 may be appropriately opened to increase the amount of steam entering.

[0056] In some embodiments, see Figure 3 The heating structure for continuous vulcanization of rubber also includes a preheating roller 600, which is rotatably arranged on the drum vulcanizer through connecting shafts arranged at both ends, and is arranged parallel to the rotating drum 10 and spaced apart. A barrel cavity is arranged inside the preheating roller 600, and connecting cavities communicating with the barrel cavity are arranged on two connecting shafts, one of which is connected to the air outlet through a connecting pipeline. The preheating roller 600 can be used together with the rotating drum 10 to transfer the sheet rubber 700 in a serpentine shape, and preheat the sheet rubber 700 before it enters the rotating drum 10.

[0057] The steam discharged from the air outlet still has a certain degree of heat, and when the sheet rubber 700 passes through the drum 10, only one side is in contact with the drum 10, and the temperature of the other side is lower than the temperature of the side in contact with the drum 10. The waste heat roller can further utilize the heat of the steam discharged from the air outlet, and contact with the other side of the sheet rubber 700 to preheat it, so as to ensure the vulcanization effect of the rubber and at the same time ensure full utilization of the steam.

[0058] Based on the same inventive concept, an embodiment of the present application also provides a drum vulcanizer, including the above-mentioned heating structure for continuous vulcanization of rubber.

[0059] Compared with the prior art, the drum vulcanizer provided in this embodiment ensures the utilization rate of steam by setting the vulcanization drum 100, effectively avoids the occurrence of dead corners inside the drum 10, and at the same time ensures the full utilization of the steam heat, ensures the heat exchange effect, and ensures that the sheet rubber 700 transferred on the outer wall of the drum 10 is evenly heated, thereby ensuring the vulcanization effect of the sheet rubber 700, and has strong practicality.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating structure for continuous vulcanization of rubber, characterized in that: It includes a vulcanization drum, which includes a rotating drum, a partition frame and a spray pipe; wherein, The rotating drum is horizontally rotatably arranged on the drum vulcanizer; the rotating drum has a cylindrical cavity; adapter shafts are arranged at both ends of the rotating drum, and a barrel cavity communicating with the cylindrical cavity is arranged in the adapter shaft; The partition frame is arranged in the cylindrical cavity, and the partition frame and the cylindrical cavity are combined to form a plurality of fan-shaped cavities arranged at annular intervals around the axis of the rotating drum; the curved surface of each fan-shaped cavity away from the axis of the rotating drum is set as the heating surface; the partition frame also has a central cavity connected with each fan-shaped cavity for steam to be discharged, and has an air outlet connected with the central cavity; the partition frame includes a partition plate and an end plate; there are a plurality of partition plates, each of which is arranged at annular intervals around the axis of the rotating drum on the inner wall surface of the cylindrical cavity, and each of the partition plates is arranged along the radial direction of the rotating drum; the fan-shaped cavity is formed between any two adjacent partition plates, and the inner wall surface of the cylindrical cavity between any two adjacent partition plates is the heating surface; the end plates are respectively arranged at both ends of each partition plate along the axial direction of the rotating drum, and one of the end plates is provided with an air outlet pipe that can penetrate one of the cylinder cavities, and the pipe mouth of the air outlet pipe is the air outlet; There are multiple injection pipes, each of which corresponds to each of the fan-shaped cavities one by one, and each of the injection pipes passes through the corresponding fan-shaped cavity along the axial direction of the rotating drum. Each of the injection pipes has multiple injection parts, and each of the injection parts is arranged at intervals along the axial direction of the rotating drum, and each of the injection parts faces the corresponding heating surface; each of the injection pipes is connected to the steam pipeline through the air transfer component arranged on the partition frame; the two ends of each of the injection pipes are respectively fixed on the two end plates and pass through the two end plates; each of the injection pipes is provided with multiple nozzles that can cover the entire corresponding heating surface at intervals; The nozzle is the injection part; each injection tube is provided with an air inlet at one end connected to the gas transmission component, and the air inlet is arranged along the radial direction of the injection tube; the injection tube is also provided with an adjusting component, and the adjusting component includes: an adjusting screw and a piston; the adjusting screw is arranged along the axial direction of the injection tube and is threadedly connected to one end of the injection tube, and one end of the adjusting screw extends into the injection tube; the piston is slidably arranged in the injection tube and is rotatably connected to the end of the adjusting screw, and is used to slide along the axial direction of the injection tube under the drive of the adjusting screw to adjust the opening of the air inlet.

2. The heating structure for continuous vulcanization of rubber according to claim 1, characterized in that: The partition frame also includes a bottom plate, and a plurality of the bottom plates are provided, each of the bottom plates corresponds to each of the fan-shaped cavities one by one, each of the bottom plates is connected to the corresponding two adjacent partition plates, and is connected to the two end plates to seal each of the fan-shaped cavities; a plurality of one-way air valves are evenly distributed on the bottom plate; each of the bottom plates encloses the central cavity.

3. The heating structure for continuous vulcanization of rubber according to claim 1, characterized in that: The gas transmission component comprises: A fixed cylinder, one end of which is fixedly mounted on the other end plate and arranged colinearly with the axis of the rotating cylinder, and the other end of which extends out through the corresponding transfer shaft cylinder cavity and is sealingly and rotatably connected to the steam pipeline; There are multiple air delivery pipes, each of which corresponds to each of the injection pipes one by one. One end of each of the air delivery pipes is connected to the fixed cylinder, and the other end is connected to the corresponding side wall of the injection pipe.

4. The heating structure for continuous vulcanization of rubber according to claim 1, characterized in that: The heating structure for continuous vulcanization of rubber also includes a preheating roller, which is rotatably arranged on the drum vulcanizer through connecting shafts arranged at both ends, and is arranged parallel to the rotating drum at intervals; a cylinder cavity is arranged inside the preheating roller, and connecting cavities connected to the cylinder cavity are arranged on the two connecting shafts, one of the connecting shafts is connected to the air outlet through a connecting pipeline; the preheating roller is used to supply the sheet rubber in a serpentine shape together with the rotating drum, and preheat the sheet rubber before it enters the rotating drum.

5. Drum vulcanizing machine, characterized in that: The invention comprises a heating structure for continuous vulcanization of rubber as described in any one of claims 1 to 4.

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