Central mechanism for electric heating advanced multi-mode switching

Abstract

The invention relates to the technical field of tire vulcanization processes, in particular to a central mechanism for electric heating advanced multi-mode switching. The center mechanism comprises a cylinder head, a center mechanism cylinder body and a lower cylinder body. The cylinder head is connected with the cylinder body through an anti-disengaging buckle, and a spraying cover is arranged at the upper end of the cylinder head and fixed through a clamping spring. And the inner wall of the cylinder head is coated with an insulating material and is provided with a through hole. The cylinder body is cylindrical, a vulcanizing medium pipeline is arranged in the cylinder body, two wear-resistant rings and sealing ring grooves are arranged at the upper end of the cylinder body, and an anti-rotation clamping groove is formed in the opposite side of a central pipeline. An electric heating head wire guide hole and a displacement sensor mounting hole are respectively formed in two sides of the cylinder body; and a powerful magnetic ring is arranged on the piston. The lower cylinder body is provided with a single air inlet and outlet hole and a high-speed motor mounting hole. A sealing groove is formed in the motor. The central mechanism adopts a modular design, is convenient to replace and maintain, realizes flexible switching among electric heating, superheated water vulcanization and nitrogen vulcanization, and remarkably improves the measurement precision, the operation efficiency and the equipment durability.

Description

Technical Field

[0001] The invention belongs to the technical field of tire vulcanization technology, and in particular relates to a central mechanism for electric heating advance multi-mode switching. Background Art

[0002] In the traditional tire manufacturing industry, the tire vulcanization link is crucial, and the performance requirements of the central mechanism of the vulcanizer are extremely high. It not only needs to complete a series of key operations such as straightening the vulcanizer bladder and stretching it to shape, but also needs to operate stably under complex working conditions. For the central mechanism of a small vulcanizer, although precision instruments are designed at the guide rod, the displacement sensor cannot be installed on the inner wall due to the small size of the center axis, which leads to great limitations in measuring the evacuation position, affecting the accuracy and efficiency of the equipment operation. In addition, the guide rod of the small central mechanism is separated from the mouth, which further limits its overall performance. At the same time, there are certain limitations on the strength of steel in the vulcanizer, which also affects the vulcanization effect and equipment durability.

[0003] In the field of electric heating vulcanization, there is currently a lack of a pure electric central mechanism that integrates heating and circulation, which makes it difficult to meet the needs of efficient and energy-saving production. The existing central mechanism is also insufficient in switching between different vulcanization methods, and cannot achieve flexible and unlimited switching between electric heating, superheated water vulcanization, and nitrogen vulcanization. In view of the above industry pain points and technical bottlenecks, it is urgent to develop a new vulcanizer central structure that must have the ability to freely switch between multiple vulcanization methods to comprehensively improve the efficiency, quality and flexibility of tire vulcanization production.

[0004] Based on the above problems, the present invention provides a central mechanism of a tire vulcanizer, aiming to effectively solve the deficiencies in the prior art. Specifically, the present invention breaks through the space limitation of the central axis of a small vulcanizer, realizes the effective installation and precise displacement measurement of the displacement sensor; improves the design of the separation of the guide rod and the mouth of the small central mechanism, and improves the overall performance; improves the vulcanization effect and equipment durability by selecting high-strength steel, special processes and a new design structure; integrates heating and circulation to achieve pure electric drive, improves thermal efficiency and reduces energy consumption; through a unique design, fast and precise switching between electric heating, superheated water vulcanization and nitrogen vulcanization is achieved. These innovations effectively solve the problems in the prior art and bring new technical solutions to the tire vulcanization industry. Summary of the invention

[0005] The present invention aims to solve the problems existing in the central mechanism of an existing small-sized vulcanizing machine, such as the difficulty in installing a displacement sensor, the performance being restricted by the separation design of the guide rod and the mouth part, the insufficient strength of the steel affecting the vulcanization effect and the durability of the equipment, the lack of a pure electric central mechanism integrating heating and circulation, and the insufficient switching of the vulcanization mode. The present invention provides a central mechanism for multi-mode switching with electric heating first.

[0006] The present invention provides a central mechanism for electric heating pre-multi-mode switching, which includes a cylinder head, a central mechanism cylinder body and a lower cylinder body. The cylinder head, the central mechanism cylinder body and the lower cylinder body adopt a modular design, and each part is highly integrated and easy to replace. Furthermore, an anti-drop buckle is provided between the cylinder body and the cylinder head to prevent the cylinder head from falling out during operation, thereby improving the reliability of the overall structure.

[0007] The upper end of the cylinder head is provided with an injection cover, which is fixed to the upper end cover by threaded fitting and has a retaining function through a retaining spring, forming a double protection structure. A heating plate is provided inside the cylinder head, which adopts electromagnetic heating technology, and the inner wall is coated with insulating material and has through holes, so that when nitrogen circulates through the heating plate, heat is brought into the capsule for vulcanization. Furthermore, the design of the heating plate can effectively improve the heat transfer efficiency and reduce energy loss.

[0008] The central mechanism cylinder body is a cylindrical structure, and a central axis water cylinder inlet is provided inside for medium circulation. Furthermore, a sulfide medium pipeline is also provided inside the cylinder body, and the pipeline is arranged inside the cylinder body to enhance the overall strength of the cylinder body. In particular, two wear-resistant rings and a universal seal ring groove are provided at the upper end of the cylinder body, which are convenient for replacing the seal ring without damaging the seal ring, thereby ensuring the sealing effect. Among them, an anti-rotation slot is provided on the opposite side of the central pipeline of the cylinder body, and a copper alloy block is installed in the slot from the side to prevent the cylinder body from rotating. In addition, electric heating head wire guide holes and displacement sensors are provided on both sides of the cylinder body, and a strong magnetic ring is provided on the piston to detect the position of the central axis, thereby realizing precise displacement measurement.

[0009] The lower cylinder is provided with a single inlet and outlet hole for controlling the inlet and outlet of high-pressure nitrogen. Furthermore, the lower cylinder is also provided with a high-speed motor mounting hole for connecting a volute fan to squeeze air so that the high-pressure nitrogen circulates and transfers heat inside the cylinder. A sealing groove is provided inside the high-speed motor for sealing the direction of the motor to prevent medium leakage.

[0010] The beneficial effects of the present invention are as follows: through modular design and the setting of anti-drop buckles, the overall stability and maintenance convenience of the central mechanism are improved; through the combination of electromagnetic heating disk and nitrogen circulation, efficient heat transfer and energy saving effects are achieved; through the cooperation of displacement sensor and strong magnetic ring, the space limitation is broken and accurate displacement measurement is achieved; through the application of high-strength steel and special processes, the vulcanization effect and equipment durability are significantly improved; through the design of single inlet and outlet holes and high-speed motors, efficient circulation heat transfer of high-pressure nitrogen is achieved; through the integration of multiple vulcanization medium pipelines, flexible switching between electric heating, superheated water vulcanization and nitrogen vulcanization is achieved. The above technical scheme effectively solves the problems in the prior art and meets the production needs of high efficiency, energy saving and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 An assembly diagram of the present invention;

[0012] Figure 2 It is a structural diagram of the injection cover of the present invention;

[0013] Figure 3 is a structural diagram of the upper end cover of the present invention;

[0014] Figure 4 It is a structural diagram of the cylinder barrel of the present invention;

[0015] Figure 5 It is a structural diagram of the ring seat of the present invention;

[0016] Figure 6 This is a structural diagram of the anti-rotation positioning block of the present invention;

[0017] Figure 7 is a structural diagram of the lower end cover of the present invention;

[0018] Figure 8 It is a structural diagram of the air intake flange of the present invention;

[0019] Fig. 9 A structural diagram of the customized motor assembly according to the present invention;

[0020] Fig.10 This is a structural diagram of the superheated water and nitrogen gas replacing the lower end cover of the present invention;

[0021] Fig.11 This is a structural diagram of the superheated water and nitrogen gas replacement upper end cover of the present invention;

[0022] Fig.12 A structural diagram of the central axis of the present invention;

[0023] Fig.13 This is a structural diagram of the displacement sensor described in the present invention.

[0024] The accompanying drawings are marked as follows: 1. Cylinder head; 2. Injection cover; 3. Upper end cover; 4. Heating plate; 5. Insulating material; 6. Through hole; 7. Cylinder body; 8. Water cylinder inlet; 9. Sulfide medium pipeline; 10. Wear-resistant ring; 11. Pan-seal ring sealing ring groove; 12. Anti-rotation slot; 13. Copper alloy block; 14. Electric heating head wire guide hole; 15. Displacement sensor mounting hole; 16. Strong magnetic ring; 17. Lower cylinder body; 18. Inlet and outlet holes; 19. High-speed motor mounting hole; 20. Sealing groove; 21. Turbofan; 22. Inlet flange pipeline; 23. Sealing ring; 24. Center axis; 25. Ring seat; 26. Copper sleeve; 27. Retaining spring; 28. Locating pin; 29. ​​Spring; 30. Bolt; 31. Turbine motor; 32. High-pressure nitrogen; 33. Displacement sensor. DETAILED DESCRIPTION

[0025] The present invention provides a central mechanism for electric heating prior multi-mode switching, aiming to solve the problems existing in the prior art, such as the difficulty in installing the displacement sensor, the limitation of the performance of the guide rod and the mouth part separation design, the insufficient strength of the steel affecting the vulcanization effect and the durability of the equipment, the lack of a pure electric central mechanism integrating heating and circulation, and the inflexible switching of the vulcanization mode. The specific implementation process and structural details of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] First, the assembly method of the central mechanism is described. Figure 1 As shown, the central mechanism is mainly composed of three parts: a cylinder head 1, a central mechanism cylinder body 7 and a lower cylinder body 17. The cylinder head 1 and the central mechanism cylinder body 7 are connected by an anti-drop buckle to prevent the cylinder head 1 from falling out during use.

[0027] like Figure 2 As shown, the upper end of the cylinder head 1 is provided with a spray cap 2, which is connected to the top of the upper end cover 3 through internal threads. The mouth of the upper end cover 3 is provided with a retaining ring groove. When the spray cap 2 is installed in place, the retaining ring 27 is installed to prevent it from retreating and fixing it, forming a double protection structure. This not only ensures the stability of the spray cap 2, but also effectively prevents it from loosening during use. Figure 3 As shown, a heating plate 4 is provided inside the upper end cover 3, and the heating plate 4 adopts electromagnetic heating, and the inner wall is coated with insulating material 5 and a through hole 6 is provided. The installation steps of the heating plate 4 are as follows: first, the interior of the upper end cover 3 is hollowed out, and the heating plate 4 is installed and welded and packaged, and the mating surface is machined. During the vulcanization process, nitrogen circulates through the heating plate 4 through the through hole 6, transfers heat to the inside of the bladder, and realizes the vulcanization of the tire.

[0028] like Figure 4 As shown, the central mechanism cylinder 7 is cylindrical in shape, and a water cylinder inlet 8 is provided on one side thereof for introducing cooling water. A sulfide medium pipeline 9 is provided inside the cylinder 7. By providing the pipeline inside the cylinder 7, the strength of the cylinder 7 is effectively increased, so that it can operate stably under complex working conditions. Figure 5 As shown, the cylinder body 7 is installed in the ring seat 25, and two wear-resistant rings 10 and a copper sleeve 26 are arranged on the ring seat 25. After the copper sleeve 26 is embedded in the ring seat 25, the outer top is fixed by a retaining spring 27, which is used for guiding and wear resistance. A copper clamping block 28 is arranged on one side of the ring seat 25, and the clamping block 28 is connected by a bolt 30 to prevent the central mechanism from rotating and the cylinder body 7 from falling out.

[0029] like Figure 7As shown, the lower cylinder 17 is provided with a single inlet and outlet hole 18 for controlling the inlet and outlet of the high-pressure nitrogen 32. The lower cylinder 17 is also provided with a high-speed motor mounting hole 19, which is connected to the volute fan 21 to realize the circulation and heat transfer of the high-pressure nitrogen 32 in the cylinder 7 through compressed air. Fig. 9 As shown, a sealing groove 20 is provided inside the high-speed motor 31 to seal the direction of the motor and prevent gas leakage. The installation steps of the lower cylinder 17 are as follows: First, two O-rings 23 are put on the lower cylinder 17, and a spring 29 is clamped in the middle. The spring 29 effectively prevents the central shaft 24 from being over-pressed. Then, the lower cylinder 17 is connected to the cylinder 7 by screws 30. A positioning pin 28 is provided on the lower cylinder 17, and a positioning port is provided on the cylinder 7. Fixing is performed through the positioning port to ensure foolproof positioning.

[0030] like Figure 6 As shown, an anti-rotation slot 12 is provided on the opposite side of the central pipe of the cylinder body 7, and a copper alloy block 13 is installed in the slot 12 from the side to prevent the cylinder body 7 from rotating or falling off. Figure 5 As shown, a copper clamping block 28 is provided on one side of the ring seat 25 and is fixed by bolts 30 to further enhance the anti-rotation effect.

[0031] like Fig.12 As shown, two sealing rings 23 are arranged on the central shaft 24. The two sealing rings 23 are wear-resistant and can effectively resist wear. At the same time, a strong magnetic ring 16 is arranged in the middle of the central shaft 24. The strong magnetic ring 16 is used to accurately locate the position of the central shaft 24. Fig.13 As shown, electric heating head wire guide holes 14 and displacement sensor mounting holes 15 are respectively provided on both sides of the cylinder body 7, and the displacement sensor mounting holes 15 are fixed by threads. A strong magnetic ring 16 is provided on the piston, and the displacement sensor realizes accurate measurement of the displacement of the central axis 24 by detecting the position of the magnetic ring 16.

[0032] like Fig.10 and Fig.11 As shown, the upper end cover 3 and the lower end cover 17 of the central mechanism can be replaced according to different vulcanization methods (such as electric heating, superheated water vulcanization, and nitrogen vulcanization). The specific replacement steps are as follows: first, remove the injection cover 2 and the upper end cover 3, then select appropriate replacement upper end cover and lower end cover as needed, and then reinstall them. The design of replacing the upper end cover and the lower end cover ensures rapid switching between different vulcanization methods and improves the flexibility and adaptability of the equipment.

[0033] like Figure 8 As shown, a sealing ring 23 is provided between the air intake flange pipe 22 and the lower end cover 17, and they are connected by bolts 30. The air intake flange pipe 22 is used to introduce high-pressure nitrogen 32, which is controlled through a single air inlet and outlet hole 18. Fig. 9As shown, the high-speed motor 31 is fixed to the lower end cover 17 by bolts 30, and the sealing groove 20 provided inside the motor ensures the sealing of the motor direction to prevent gas leakage. The high-speed motor 31 realizes the circulation heat transfer of high-pressure nitrogen 32 in the cylinder 7 through compressed air, thereby improving the vulcanization efficiency and energy saving effect.

[0034] The working principle and operation process of the present invention are described in detail below. When the vulcanizer is working, the main oil cylinder first drives the central mechanism to move up and down. Figure 1 As shown in the (assembly diagram), the central mechanism is installed on the lower crossbeam of the vulcanizer, positioned by a ring seat 25, and connected with bolts 30. The lower crossbeam drives the central mechanism to move up and down, thereby realizing operations such as straightening and stretching the vulcanizing bladder of the vulcanizer. During the vulcanization process, the vulcanizing bladder needs to be filled with a vulcanizing medium, such as high-pressure nitrogen 32, to achieve the vulcanization of the tire.

[0035] The specific steps are as follows:

[0036] Installation and alignment of the curing bladder: The upper ring of the tire clamp is connected to the upper end cover 3 of the central mechanism, and the lower ring of the tire clamp is connected to the top of the central shaft 24. After the vulcanizer is started, the main cylinder drives the lower crossbeam to move downward, and the lower crossbeam drives the central mechanism to move downward, and the central shaft 24 straightens the curing bladder through the lower ring 34. At this time, the curing bladder is in the large ring of the mold sleeve of the vulcanizer, ready for subsequent vulcanization operations.

[0037] Filling of sulfiding medium: Figure 1 As shown, the shaping nitrogen and high-pressure nitrogen 32 from the main pipe are collected together and controlled by the cut-off valve. According to different vulcanization methods, high-pressure nitrogen 32 or superheated water can be selected. The high-pressure nitrogen 32 enters the lower end cover 17 through the air inlet flange pipe 22, and then enters the cylinder body 7 through the single air inlet and outlet hole 18. Fig. 9 As shown, the high-speed motor 31 is mounted on the lower end cover 17, and the high-pressure nitrogen 32 is circulated and heat-transferred in the cylinder 7 through compressed air. The turbofan 21 compresses the air in the pipeline to circulate it, thereby evenly transferring the heat to the inside of the vulcanizing bladder to achieve the vulcanization of the tire.

[0038] The heating process of the heating plate 4: Figure 3 As shown, the heating plate 4 is installed inside the cylinder head 1 and adopts electromagnetic heating. The inner wall of the heating plate 4 is coated with insulating material 5 to prevent short circuit during electromagnetic heating. A through hole 6 is provided on the heating plate 4. When the high-pressure nitrogen 32 circulates through the heating plate 4, the heat is brought into the vulcanizing bladder to achieve vulcanization. The design of the heating plate 4 not only improves the heating efficiency, but also effectively reduces energy consumption.

[0039] Displacement sensor detection: such as Fig.12As shown, a strong magnetic ring 16 is arranged in the middle of the central shaft 24, and displacement sensor mounting holes 15 are arranged on both sides of the cylinder body 7. The displacement sensor detects the position of the magnetic ring 16 to accurately measure the displacement of the central shaft 24. This breaks through the space limitation of the central shaft of the traditional small vulcanizer and improves the accuracy and efficiency of the equipment operation.

[0040] Replacement of wear rings and sealing rings: Figure 4 As shown, two wear-resistant rings 10 and a flood seal ring groove 11 are provided at the upper end of the cylinder body 7. During use, if the wear-resistant ring 10 or the seal ring 23 needs to be replaced, it can be replaced by removing the cylinder head 1. The specific steps are as follows: first, remove the injection cover 2, then remove the cylinder head 1, take out the worn wear-resistant ring 10 or the seal ring 23, replace it with a new wear-resistant ring 10 or the seal ring 23, and then reinstall the cylinder head 1 and the injection cover 2. This design makes it more convenient and quick to replace the wear-resistant ring 10 and the seal ring 23 without damaging the seal ring 23, thereby ensuring the sealing effect.

[0041] Installation and sealing of high-speed motor 31: Fig. 9 As shown, the high-speed motor 31 is mounted on the lower end cover 17 and fixed by bolts 30. A sealing groove 20 is provided inside the motor to seal the direction of the motor to prevent gas leakage. After the motor is started, the air is compressed by the turbofan 21 to achieve the circulation heat transfer of the high-pressure nitrogen 32 in the cylinder 7. This design not only improves the heat transfer efficiency, but also effectively reduces energy consumption.

[0042] Vulcanization process: After the vulcanizer is started, the main cylinder drives the lower crossbeam to move downward, and the central mechanism moves downward accordingly. The central shaft 24 straightens the vulcanization bladder through the lower ring 34, and then fills it with high-pressure nitrogen 32 or superheated water. The heating plate 4 transfers heat to the high-pressure nitrogen 32 through electromagnetic heating, and then brings the heat into the vulcanization bladder through the high-pressure nitrogen 32 to achieve the vulcanization of the tire. During the vulcanization process, the displacement sensor ensures the accuracy of the vulcanizer operation by detecting the displacement of the central shaft 24. After the vulcanization is completed, the main cylinder drives the lower crossbeam to move upward, and the central mechanism moves upward accordingly. The vulcanization bladder opens under the action of gravity, making it easy to remove the vulcanized tire.

[0043] Switching of vulcanization methods: The center has designed a quick switching function for various vulcanization methods. Fig.10 and Fig.11As shown, the switch of different vulcanization modes can be achieved by replacing the upper end cover 3 and the lower end cover 17. The specific steps are as follows: First, remove the injection cover 2 and the upper end cover 3, select appropriate replacement upper end cover and lower end cover as needed, and then reinstall them. For example, if superheated water vulcanization is required, the upper end cover 3 and the lower end cover 17 with superheated water pipes can be installed; if nitrogen vulcanization is required, the upper end cover 3 and the lower end cover 17 with nitrogen pipes can be installed. This design makes the switching of vulcanization modes more flexible and efficient, meeting different production needs.

[0044] Installation of anti-rotation block 28: Figure 5 As shown, a copper block 28 is provided on one side of the ring seat 25 and fixed by bolts 30. The copper block 28 is installed in the anti-rotation slot 12 of the cylinder body 7 to prevent the cylinder body 7 from rotating and falling off. The specific installation steps are as follows: first, the cylinder body 7 is installed in the ring seat 25, and then the copper block 28 is installed from the side of the ring seat 25. The block 28 enters the slot 12 of the cylinder body 7 and is fixed by bolts 30. This design not only enhances the stability of the cylinder body 7, but also effectively prevents it from rotating and falling off during use.

[0045] Installation of wear-resistant ring 10 and copper sleeve 26: Figure 5 As shown, two wear-resistant rings 10 and a copper sleeve 26 are arranged on the ring seat 25. After the copper sleeve 26 is embedded in the ring seat 25, the outer top is fixed by a retaining spring 27, both of which are used for guiding and wear resistance. The specific installation steps are as follows: first, the copper sleeve 26 is embedded in the ring seat 25, and then the retaining spring 27 is installed on the outer top of the ring seat 25, and the copper sleeve 26 is fixed by the retaining spring 27. The design of the wear-resistant ring 10 and the copper sleeve 26 not only improves the wear resistance of the equipment, but also effectively extends the service life of the equipment.

[0046] Installation of sealing ring 23: Figure 4 As shown, the upper end surface of the cylinder body 7 is provided with a circular groove for installing the spiral wound gasket. The upper end cover 3 is provided with two wear-resistant rings 10 and a flood seal ring groove 11. During installation, the spiral wound gasket is first installed in the circular groove on the upper end surface of the cylinder body 7, and then the upper end cover 3 is sleeved on the cylinder body 7 and fixed by bolts 30. The specific steps are as follows: First, install the spiral wound gasket in the circular groove on the upper end surface of the cylinder body 7 to ensure the sealing effect.

[0047] Specifically, the central mechanism is assembled as follows:

[0048] Step 1: The injection cover 2 is screwed onto the upper end cover 3 through the internal thread. The upper end cover is provided with a retaining ring groove. After the injection cover 2 is in place, the retaining ring 27 is installed. The upper end cover 3 is provided with a heating plate 4 inside. The interior is hollowed out during processing. After the heating plate 4 is installed, it is welded and packaged, and the mating surface is machined.

[0049] Step 2: The upper end cover 3 is provided with a safety buckle. When installing, it should be turned counterclockwise 10 degrees first. After it is installed downward, it should be turned clockwise 10 degrees. The bolt 30 hole is aligned. The side of the cylinder body 7 is recessed to install the connecting bolt 30 between the upper end cover 3 and the cylinder body 7. The upper end surface of the cylinder body 7 is provided with a circular groove for installing the winding gasket. The upper end cover 3 is provided with two wear-resistant rings 10 and a sealing ring 23 to seal and guide the capsule installed above the central mechanism;

[0050] Step 3: The cylinder body 7 is installed in the ring seat 25. Two wear-resistant strips and a copper sleeve 26 are set on the ring seat 25. After the copper sleeve 26 is embedded in the ring seat 25, the outer top is fixed with a retaining spring 27, which is used for guiding and wear-resistant. A copper block is set on one side of the ring seat 25. The block is connected by a bolt 30 to prevent the central mechanism from rotating and the cylinder body 7 from falling out.

[0051] Step 4: After the two O-rings are put on the lower end cover, the spring 29 is clamped in the middle. The spring 29 effectively prevents the central axis from being over-pressed; then the lower end cover is screwed to the steel body. A positioning pin 28 is set on the lower end cover, and a positioning port is set on the steel body. The positioning port is used to fix it for fool-proof positioning;

[0052] Step 5: The lower end cover is provided with an inlet duct and a return duct. The inlet hole is from the lower end cover into the lower opening, after entering the lower end cover, it goes forward and then enters a groove, in which there is a turbine. Two sealing rings 23 are provided on the turbine motor 31 to seal the space tightly. It is fixed with bolts 30, and the turbine compresses the air in the pipeline to make it circulate;

[0053] Step 6: Two sealing rings 23 are set on the central axis. These two sealing rings 23 are wear-resistant and can resist wear. At the same time, a strong magnetic ring is set in the middle of the central axis. The strong magnetic ring is used to accurately locate the position of the central axis;

[0054] Step 7: The cylinder body 7 is provided with a mounting hole specifically for mounting the displacement sensor thereon and is fixed with threads.

[0055] Specifically, the central mechanism is installed as follows:

[0056] Step 1: The center mechanism is installed by positioning the ring seat 25 on the lower crossbeam of the vulcanizer and connected with bolts 30;

[0057] Step 2: The lower water exchange cylinder is connected to the central mechanism by a splint connection method, and the vulcanizer moves up and down;

[0058] Step 3: The shaping nitrogen and high-pressure nitrogen from the main pipe are collected together, and the two nitrogen media with different pressures are switched by a cut-off valve, and connected through the lower end cover flange;

[0059] Step 4: Connect the upper ring of the tire clamp to the upper end cover of the center mechanism;

[0060] Step 5: The lower ring of the tire clamp is connected to the top of the central axis 24 of the central mechanism;

[0061] Step 6: The lifting and lowering of the center axis is connected to the threaded hole of the lower end cover through a high-pressure hose.

[0062] Through the above specific implementation, the central mechanism of the present invention realizes flexible switching between electric heating, superheated water vulcanization and nitrogen vulcanization, meets the needs of different vulcanization processes, and improves the efficiency, quality and flexibility of tire vulcanization production. At the same time, the central mechanism of the present invention ensures the stability and reliability of the equipment and extends the service life of the equipment through modular design, anti-drop buckle, double protection structure, wear-resistant ring 10 and sealing ring 23 and other designs. In addition, the central mechanism of the present invention also realizes the production needs of high efficiency and energy saving through electromagnetic heating and high-pressure nitrogen 32 circulation technology, and significantly reduces energy consumption.

Claims

1. A central mechanism for electric heating pre-multi-mode switching, comprising a cylinder head (1), a central mechanism cylinder body (7) and a lower cylinder body (17), characterized in that: The cylinder head (1) and the central mechanism cylinder body (7) are connected via an anti-drop buckle; The upper end of the cylinder head (1) is provided with an injection cover (2), which is screwed onto the upper end cover (3) by threaded engagement and is fixed by a retaining spring (27); A heating plate (4) is arranged inside the cylinder head (1), the heating plate (4) adopts electromagnetic heating, the inner wall of which is coated with insulating material (5) and has a through hole (6); A water cylinder inlet (8) is provided on one side of the central mechanism cylinder body (7), and a sulfide medium pipeline (9) is provided inside; The lower cylinder (17) is provided with a single inlet and outlet hole (18) for controlling the inlet and outlet of high-pressure nitrogen (32); The lower cylinder (17) is also provided with a high-speed motor mounting hole (19) which is connected to the volute fan (21) to compress air to realize the circulation and heat transfer of high-pressure nitrogen (32) in the cylinder (7); Two wear-resistant rings (10) and a universal seal ring groove (11) are arranged on the upper end of the central mechanism cylinder body (7), an anti-rotation groove (12) is arranged on the opposite side of the central pipe, and a copper alloy block (13) is installed in the groove (12) from the side; Electric heating head wire guide holes (14) and displacement sensor mounting holes (15) are respectively arranged on both sides of the central mechanism cylinder body (7), and a strong magnetic ring (16) is arranged on the piston.

2. The central mechanism according to claim 1, characterized in that: The injection cover (2) is connected to the top of the upper end cover (3) via an internal thread. A retaining ring groove is provided at the mouth of the upper end cover (3). When the injection cover (2) is installed in place, a retaining ring (27) is installed to prevent it from retreating and fixing it.

3. The central mechanism according to claim 1, characterized in that: The central mechanism cylinder (7) is cylindrical in shape as a whole. Two wear-resistant rings (10) and a copper sleeve (26) are arranged on the ring seat (25). After the copper sleeve (26) is embedded in the ring seat (25), the outer top is fixed by a retaining spring (27).

4. The central mechanism according to claim 1, characterized in that: An anti-rotation slot (12) is arranged on the opposite side of the central pipe of the central mechanism cylinder (7), and a copper alloy block (13) is installed in the slot (12) from the side to prevent the cylinder (7) from rotating or falling off.

5. The central mechanism according to claim 1, characterized in that: The lower cylinder (17) is provided with a single air inlet and outlet hole (18) for controlling the inlet and outlet of the high-pressure nitrogen (32). The lower cylinder (17) is also provided with a high-speed motor mounting hole (19) connected to the volute fan (21) to compress air to realize the circulation and heat transfer of the high-pressure nitrogen (32) in the cylinder (7).

6. The central mechanism according to claim 5, characterized in that: A sealing groove (20) is arranged inside the high-speed motor (31) to seal the direction of the motor and prevent gas leakage.

7. The central mechanism according to claim 1, characterized in that: Two sealing rings (23) are arranged on the central shaft (24), and the sealing rings (23) have a wear-resistant effect. A strong magnetic ring (16) is arranged in the middle of the central shaft (24). The displacement sensor detects the position of the magnetic ring (16) to achieve accurate measurement of the displacement of the central shaft (24).

8. The central mechanism according to claim 1, characterized in that: The heating plate (4) adopts electromagnetic heating, the inner wall of which is coated with insulating material (5) and provided with through holes (6) for transferring heat to the inside of the capsule (35) to realize vulcanization when nitrogen circulates.

9. The central mechanism according to claim 1, characterized in that: Two wear-resistant rings (10) and a flooded seal ring groove (11) are arranged on the upper end of the central mechanism cylinder body (7), so as to facilitate the replacement of the seal ring (23) without damaging its sealing effect.

10. The central mechanism according to claim 1, characterized in that: Electric heating head wire guide holes (14) and displacement sensor mounting holes (15) are respectively arranged on both sides of the cylinder body (7), and a strong magnetic ring (16) is arranged on the piston for detecting the position of the central axis (24).

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