Vulcanization production line of long rubber part and transfer vulcanization method

Abstract

The invention relates to the field of rubber vulcanization equipment, and discloses a vulcanization production line for long rubber parts, which is characterized by comprising: a mounting rack; the conveying platform is mounted on the mounting frame and used for bearing the long-size rubber parts; the vulcanization heating device is arranged right behind the conveying platform; the lifting platform is arranged between the mounting frame and the vulcanization heating device; when the lifting platform is lifted to a high position, the conveying platform can sequentially move through the mounting rack and the lifting platform at the high position to enter the vulcanizing heating device through the guide device; and when the lifting platform descends to a low position, the inlet of the vulcanization heating device is not influenced by the lifting platform and can be sealed. By means of the design, sealing of the vulcanization heating device is facilitated, the risk that rubber parts are damaged does not exist in the moving process, meanwhile, it is ensured that the long-size rubber parts can be rapidly and efficiently moved into and out of the vulcanization heating device, efficient continuous production is achieved, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vulcanization of long-sized rubber parts, and more specifically, to a vulcanization production line for long-sized rubber parts and a transfer vulcanization method for extruding long-sized rubber parts. Background Art

[0002] At present, there are two main ways to vulcanize long rubber parts: closed vulcanization and continuous vulcanization production line. For long rubber parts, such as long rubber hoses used for special industrial applications such as oil and gas transportation and fire water bags, continuous vulcanization production lines are more suitable. This method allows the long rubber parts to pass through the heating area (with multiple ones) on the assembly line one after another to achieve efficient vulcanization production. The heating area is the core part of the continuous vulcanization production line. It can be heated by microwave (generally composed of multiple independent microwave heating cavities in series), steam heating (multiple steam jackets or pipelines), hot air heating (usually composed of multiple independent temperature-controlled hot air circulation ovens in series), etc. The structure varies according to the different vulcanization methods. However, for long rubber parts with special quality and performance requirements, it is difficult for the continuous vulcanization production line to ensure uniform heating of the entire long rubber parts in the length direction, resulting in uneven local vulcanization, affecting the performance and reliability of the product. The following is an analysis of the key factors that make it difficult for the continuous vulcanization production line to ensure uniform heating of long rubber parts:

[0003] Difficulty in dynamic temperature field control: During continuous movement (typical line speed 5-30m / min), the heating zone needs to maintain a temperature control accuracy of ±2°C. In actual production, the temperature difference in the dead corner of the hot air circulation system can reach more than 10°C, and the standing wave effect during microwave vulcanization heating can cause the electromagnetic field intensity to fluctuate by more than 10% to 20%.

[0004] Dwell time deviation: Line speed fluctuation (common ±0.5m / min) will lead to differences in the effective vulcanization time of different sections of materials in the heating zone. For example, in a 200-meter-long heating zone, a 1% speed fluctuation will cause a difference of about 12 seconds in the critical section vulcanization time (based on a base speed of 20m / min).

[0005] Limitations of energy input methods: Traditional hot air vulcanization has the risk of surface overheating (the surface temperature can reach 220°C while the internal temperature is only around 160°C). New technologies such as microwave / infrared are affected by the uneven dielectric properties of the material and will produce selective heating.

[0006] Cumulative boundary effect: When products longer than 50 meters are continuously vulcanized, the shrinkage stress (typical value 0.5-2MPa) of the vulcanized material in the front section will be transferred to the unvulcanized area through the material body, causing local deformation that affects heat transfer contact. This effect is significantly amplified with increasing length.

[0007] In summary, the combined effect of these factors means that even for advanced continuous vulcanization production lines, the vulcanization uniformity indicators (such as the coefficient of variation of tensile strength) can usually only be controlled within 8% to 12%, while static vulcanization tanks can reach less than 5%.

[0008] The vulcanization tank adopts a closed vulcanization method. The vulcanization process is achieved by controlling the temperature, pressure and time in the tank body. It belongs to static vulcanization, and the vulcanized rubber parts are heated relatively evenly. During vulcanization, for relatively soft and long rubber parts, they are first coiled and then pushed into the vulcanization tank for vulcanization. This coiling method has unstable vulcanization quality and is easy to affect the performance of the product (the outer side of the bend is subjected to tensile stress, the inner side is subjected to compressive stress, the molecular activity in the stretching area is enhanced, and the vulcanization speed is accelerated); in addition, some long rubber parts cannot be coiled (such as built-in steel parts, etc.). In summary, in order to achieve the uniform vulcanization requirements of long rubber parts and meet their large size requirements, large vulcanization tanks (also called vulcanization kettles or vulcanization furnaces) are now designed to accommodate, heat and vulcanize these ultra-long products. This tank body must have sufficient length and make specific considerations in the structural design to meet the safety and reliability under high pressure conditions. For example, the corners of the tank side wall and the sealing cover are made into a large arc transition treatment, and the sealing cover is designed with a spherical concave design, all of which are to reduce stress concentration and evenly distribute pressure. Long rubber parts are stacked in a relatively regular manner and cannot occupy the space created by the aforementioned design (the large arc at the corner of the tank side wall and the sealing cover, and the spherical concave part of the sealing cover), resulting in low space utilization; during vulcanization, the internal free space consumes a lot of energy, and a lot of exhaust gas is emitted during vulcanization, resulting in serious waste of resources. Moreover, during the vulcanization process, this design will also lead to greater pressure loss and temperature loss, making it more difficult to control process parameters, and various vulcanization parameters cannot be controlled to a higher degree of accuracy. The reasons for the pressure loss are as follows:

[0009] Gas flow resistance: During the vulcanization process, high-temperature and high-pressure gas (such as steam or nitrogen) needs to be filled into the tank. The existence of empty space will complicate the gas flow path, and the airflow is prone to form eddies (turbulence) in the corners with large arcs, the flow rate is reduced, and the pressure energy is converted into kinetic energy loss (according to the Bernoulli equation, the flow rate decreases with the static pressure decrease). The gas forms a low-pressure retention area in the concave area of ​​the spherical sealing cover, and additional energy is required to maintain pressure balance. Example calculation: If the effective volume in the tank only accounts for 60%, the gas flow rate in the empty space decreases by about 40%, and the pressure drop caused by friction resistance can reach 10% to 15% of the design pressure. The contact area between the gas in the empty space and the rubber parts is reduced, resulting in a decrease in the efficiency of gas penetration into the rubber parts, requiring higher pressure compensation (for example, for every 10% increase in the proportion of empty space, 5% to 8% more steam is consumed to maintain the target pressure).

[0010] Causes of temperature loss:

[0011] Waste of heat capacity: The gas in the empty space (such as steam) needs to be heated to the vulcanization temperature (usually 160-200°C). According to the thermodynamic formula: Q = m·c·ΔT, where m is the mass of the gas and c is the specific heat capacity, the energy required for heating increases by about 15% to 20% for every 10% increase in the empty space. Actual impact: If the total volume of the tank is 50m 3 , the free space accounts for 40%, then it is necessary to heat about 200kg of steam (steam density 1.2kg / m 3 The heat transfer efficiency is reduced: the empty space destroys the forced convection effect of gas circulation. The gas flow pattern in the tank: under normal working conditions, the gas should flow at high speed along the surface of the rubber part to enhance heat transfer (the convection heat transfer coefficient α can reach 50-100W / m 2 ·K). Under the interference of free space: large arc corners and spherical depressions form low-speed recirculation areas, and the local convection heat transfer coefficient drops to 20W / m 2 ·K or less, resulting in uneven temperature distribution (temperature difference can reach 20-30℃).

[0012] It is worth noting that large-scale vulcanization tank equipment requires huge investment, including not only the manufacturing cost of the tank itself, but also the installation, maintenance and operation costs. For example, for a hose longer than 8 meters, the required vulcanization tank size will be very large, further increasing the cost.

[0013] Large-scale vulcanization tanks have fixed sizes, poor adaptability, low flexibility, and higher safety risks during operation. Sufficient space needs to be reserved at the entrance of the vulcanization tank, because the sealing cover needs to be installed here, and there must be no obstacles from other objects, and there must be a certain amount of operating space when installing the sealing cover. In this case, for longer rubber parts, they are currently placed in the vulcanization tank manually with lifting equipment. Due to the long size of the rubber parts, when they are hoisted in, if the lifting ropes are not tied evenly, the long rubber parts are prone to deformation and internal stress; if they are bumped during the lifting process, the surface will be damaged; as mentioned above, the rubber parts are at great risk of damage during the lifting process. Moreover, this method is cumbersome to operate, cannot achieve continuous production, and has low production efficiency. Summary of the invention

[0014] The present invention aims to overcome at least one defect of the above-mentioned prior art and provide a vulcanization production line for long-sized rubber parts, which is used to solve the technical problems that the process of transferring long-sized rubber parts to the vulcanization tank is cumbersome, the risk of damage to the long-sized rubber parts is high, and continuous production cannot be carried out without affecting the inlet sealing of the vulcanization tank.

[0015] The technical solution adopted by the present invention is a vulcanization production line for long-sized rubber parts, comprising: a mounting frame; a conveying platform, mounted on the mounting frame and used to carry the long-sized rubber parts; a vulcanization heating device, arranged directly behind the conveying platform; a lifting platform, arranged between the mounting frame and the vulcanization heating device; and also comprising: a guiding device, when the lifting platform is raised to a high position, the conveying platform can be moved in sequence through the guiding device through the mounting frame and the lifting platform at a high position into the vulcanization heating device; when the lifting platform is lowered to a low position, the inlet of the vulcanization heating device is not affected by the lifting platform and can be sealed.

[0016] The guiding device ensures the precise movement of the conveying platform on different platforms, ensures the stability and accuracy of the transportation and movement of the long rubber hose during the entire vulcanization process, reduces the occurrence of errors, and enhances the coordination and reliability of the system. The lifting platform is raised to a high position, and the conveying platform carries the long-sized rubber parts and is guided by the guiding device through the lifting platform to enter the vulcanization heating device. After entering, the lifting platform is lowered to a low position, and the sealing cover is installed to seal the vulcanization heating device, and the long-sized rubber parts on the internal conveying platform can be vulcanized. After the vulcanization is completed, the sealing cover is removed, the lifting platform is raised to a high position, and the conveying platform is pulled out through the guiding device, and the long-sized rubber parts after the heating and vulcanization are removed, so that the vulcanization is completed once, and the above process is repeated to achieve continuous production. This design facilitates the sealing of the vulcanization heating device, and there is no risk of damage to the rubber parts during the movement. At the same time, it ensures that the long-sized rubber parts can be quickly and efficiently moved in and out of the vulcanization heating device, realizing efficient continuous production, which can effectively improve production efficiency.

[0017] Furthermore, it also includes: a cache platform, which is installed on the mounting frame and arranged in parallel on one side of the conveying platform, and its top is higher than the top of the conveying platform. The long-sized rubber parts in the extrusion process can be cached on the cache platform. After the extrusion is completed, because it is higher than the top of the conveying platform, one end is set below the exit of the extruder. Therefore, the extruded long-sized rubber parts can be directly temporarily stored on the cache platform, and then the long-sized rubber parts on it can be rolled onto the conveying platform, thereby realizing efficient caching and transfer of the long-sized rubber parts after extrusion. The present invention realizes efficient online production through the cooperation of the online cache platform, the conveying platform, the lifting platform and the vulcanization heating device, without the need for the cumbersome handling work of the traditional vulcanizing tank.

[0018] Furthermore, a push-pull plate is installed at the end of the conveying platform, and a push-pull rod is detachably installed on the push-pull plate through a push-pull stop pin. The push-pull rod can better exert force and facilitate the movement of the conveying platform. The detachable design facilitates the conveying platform to enter the next narrow space and avoid interference with other surrounding objects. For example, the conveying platform can be directly moved into the vulcanization heating pipeline, which is more convenient for the subsequent transportation, processing and production of long-sized rubber parts.

[0019] Furthermore, the guiding device includes guiding components, which are respectively arranged in the mounting frame, the lifting platform and the vulcanization heating pipeline. When the lifting platform is raised to a high position, the guiding components in the mounting frame, the lifting platform and the vulcanization heating pipeline are spliced ​​in sequence; the guiding components are installed on the conveying platform and can cooperate with any guiding components arranged on the mounting frame, the lifting platform and the vulcanization heating pipeline. The splicing design of the guiding components ensures the smooth transition of the conveying platform under different working conditions, enhances the overall coordination and reliability of the system, and enables the conveying platform to smoothly enter the vulcanization heating pipeline. The cooperation between the guiding components reduces the friction when the conveying platform moves, improves the convenience and adaptability of the operation, and ensures the smooth transition and efficient transmission of the conveying platform between the guiding components.

[0020] Furthermore, the guide components are two guide rails arranged in parallel, and the guide components are two guide rollers respectively rolling with the two guide rails, and a plurality of guide rollers are arranged on the conveying platform. The design of the guide rails and rollers not only reduces the friction resistance, but also provides a more stable guiding function, ensures the linear motion of the conveying platform, improves the running stability of the system, and enables the conveying platform to smoothly enter the vulcanization heating pipeline.

[0021] Furthermore, the conveying platform, the lifting platform and the vulcanization heating pipe are all tilted downward from the front to the back and have the same tilt angle of 0.3°-0.7°. The tilt of 0.3°-0.7° makes it easier to push the conveying platform in. At the same time, when the steam in the vulcanization heating device cools and generates water, it is easier to discharge it from the rear. When the tilt is 0.5°, the effect is the best, and it is not too laborious to pull out the conveying platform.

[0022] Furthermore, the vulcanization heating device includes: a vulcanization heating pipeline, which is formed by splicing a plurality of flange pipes; and two sealing covers, which are respectively installed at both ends of the vulcanization heating pipeline. The inner wall of the flange pipe is a straight cylindrical structure, and the inner side surface of the sealing cover is a flat surface. The splicing method of the flange pipe allows the length to be adjusted by adding or subtracting as needed to adapt to long rubber hoses of different sizes. After installation, the inner wall of the straight cylindrical structure and the inner side surface of the flat sealing cover can form a vertical shape, which is conducive to maximizing the utilization rate of the internal space, so that the rubber hose can be arranged more compactly, reducing the free space, ensuring the uniform distribution of pressure during the vulcanization process, improving the quality of vulcanization, and also reducing energy consumption and exhaust emissions. The use of spliced ​​flange pipes not only ensures the advantages of long-sized rubber parts in product quality consistency, adapting to special needs and handling large sizes, but also solves the problem of uneven vulcanization encountered by continuous vulcanization production lines in the production of long-sized rubber parts. Spliced ​​flange pipes have obvious advantages in terms of vulcanization quality; specifically, spliced ​​flange pipes can achieve a more uniform vulcanization effect. By precisely controlling temperature and pressure, the entire product can achieve the ideal degree of vulcanization inside and outside, reduce the risk of under-vulcanization or over-vulcanization, and ensure that long rubber parts are evenly heated. The relatively stable vulcanization environment inside reduces the internal stress caused by rapid heating or cooling, and reduces the possibility of cracks and other defects. Spliced ​​flange pipes are also particularly suitable for special rubber materials. It is easy to adjust process parameters to meet the needs of different materials, and allows the addition of special auxiliary agents or post-treatment during the vulcanization process. Independent control of each batch ensures the consistency of product quality, and the closed environment reduces external interference and improves the stability and reliability of the product. The flange pipe is welded with standard DN200 stainless steel pipes, which can significantly save project cost investment, has low processing difficulty and low leakage risk, is simple to use and maintain, and effectively improves the internal space utilization rate of the equipment. In terms of energy use, it significantly reduces the amount of steam consumed during the vulcanization process of the hose, and also reduces the emission of exhaust gas. Because the overall volume of the tank is more compact, the pressure and temperature control required for long rubber parts during the vulcanization process are more precise and stable, which can effectively improve the accuracy of vulcanization control and the quality of hose vulcanization and reduce the defective rate.

[0023] Furthermore, a pressure relief valve is provided at the front end of the vulcanization heating pipeline, a pneumatic diaphragm regulating valve is provided at the rear end of the vulcanization heating pipeline, and a number of temperature transmitters are evenly provided along the length of the vulcanization heating pipeline, wherein two temperature transmitters are respectively located at the two ends of the vulcanization heating pipeline, and a pressure transmitter is provided on the pipeline connecting the pneumatic diaphragm regulating valve. The design of these sensors and valves ensures the precise control of temperature and pressure during the vulcanization process, and guarantees the consistency and reliability of product quality. The presence of the pressure relief valve also improves the safety of operation, and the pneumatic diaphragm regulating valve can automatically adjust the air intake according to the data of the pressure transmitter to maintain a constant internal pressure environment. This ensures that the products produced by vulcanization heating have better quality and performance.

[0024] A transfer vulcanization method for extruding a long rubber part, having a vulcanization production line for a long rubber part as described above, comprises the following steps:

[0025] S1, the buffer platform receives the long rubber parts extruded by the extruder;

[0026] S2, moving the long rubber parts from the buffer platform to the conveying platform;

[0027] S3, the lifting platform is raised to a high position, and the conveying platform equipped with the long rubber parts is moved sequentially through the mounting frame and the lifting platform at a high position to enter the vulcanization heating device through the guiding device;

[0028] S4, the lifting platform is lowered to a low position, and the vulcanization heating device is sealed;

[0029] S5, vulcanizing the long rubber part in a vulcanization heating device;

[0030] S6. After the vulcanization is completed, the vulcanization heating device is turned on, the lifting platform is raised to a high position, and the vulcanized long rubber piece is moved out of the vulcanization heating device together with the conveying platform through the guiding device;

[0031] S7. Remove the long rubber parts after vulcanization and repeat the above steps to achieve continuous production.

[0032] By organically combining the buffer platform, conveying platform, lifting platform and vulcanization heating device, and using a guiding device to ensure seamless connection between the components, the entire vulcanization process can achieve continuous operation from the extruder to the vulcanization heating device. The conveying platform carries the long-sized rubber parts into the vulcanization device for vulcanization. The rubber parts will not bend or wear when loading and unloading, and the rubber parts have a high surface quality after vulcanization. This method greatly reduces the need for manual intervention and significantly improves production efficiency. When the lifting platform is lowered to a low position, the port of the vulcanization heating device is not affected and can be sealed to ensure the safety of the vulcanization process.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows: the lifting platform is raised to a high position, and the conveying platform carries the long-sized rubber parts and is guided by the guiding device to pass through the lifting platform and enter the vulcanization heating device together; after entering, the lifting platform is lowered to a low position, and the sealing cover is installed to seal the vulcanization heating device, and the long-sized rubber parts on the internal conveying platform can be vulcanized; after the vulcanization is completed, the sealing cover is removed, the lifting platform is raised to a high position, and the conveying platform is pulled out by the guiding device, and the long-sized rubber parts after the heating and vulcanization are removed, so that one vulcanization is completed, and then the above process is repeated to realize continuous production; this design facilitates the sealing of the vulcanization heating device, and there is no risk of damage to the rubber parts during the movement, while ensuring that the long-sized rubber parts can be quickly and efficiently moved in and out of the vulcanization heating device, thereby realizing efficient continuous production and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 It is a structural schematic diagram of the conveying platform of the present invention.

[0036] Figure 3 It is a schematic structural diagram of the push-pull rod of the present invention.

[0037] Figure 4 It is a structural schematic diagram of the lifting platform of the present invention.

[0038] Figure 5 It is a schematic diagram of the partial structure of the front end of the vulcanization heating pipeline of the present invention.

[0039] Figure 6 It is a schematic diagram of the local structure of the rear end of the vulcanization heating pipeline of the present invention.

[0040] Figure 7 The figure is a schematic diagram of the position of the steam trap on the vulcanization heating pipeline of the present invention.

[0041] Figure 8 This is a photo of the actual structure of the present invention after installation. Through this photo, one can intuitively see the arrangement of the present invention in an actual application scenario and its appearance.

[0042] In the figure: 1. Cache platform; 2. Conveying platform; 3. Lifting platform; 4. Controller; 5. Vulcanization heating pipe; 6. Base; 7. Guide component; 8. Height adjustment component; 9. Push-pull rod; 10. Push-pull stop pin; 11. Push-pull plate; 12. Lifting platform bracket; 13. Lifting guide rod; 14. Manual pressure relief valve; 15. Lifting cylinder; 16. Guide component; 17. Mounting frame; 18. Pipe support roller; 19. Flange pipe; 20. Pressure relief valve; 21. Manual drain valve; 22. Steam trap; 23. Pneumatic diaphragm regulating valve; 24. Pressure transmitter; 25. Temperature transmitter; 26. Mounting plate; 27. Profile trough; 28. Bolt assembly; 29. ​​Sealing cover; 30. U-shaped pipe clamp; 31. Fixed plate; 32. Movable plate. DETAILED DESCRIPTION

[0043] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0044] like Figure 1-8 As shown, the present scheme relates to a pipe vulcanization production line for long-sized rubber parts, including: a mounting frame 17; a buffer platform 1 and a conveying platform 2 are mounted on the mounting frame 17, and the conveying platform 2 is arranged on one side of the buffer platform 1, and its top is lower than the top of the buffer platform 1; a vulcanization heating device, which is arranged directly behind the conveying platform 2, includes a vulcanization heating pipe 5 and a sealing cover 29, and the vulcanization heating device can use other sealed cylinders, pipes or tanks, etc.; a lifting platform 3, which is arranged between the mounting frame 17 and the vulcanization heating device; wherein, when the lifting platform 3 is raised to a high position, the conveying platform 2 can enter the vulcanization heating device through the lifting platform 3; when the lifting platform 3 is lowered to a low position, the port of the vulcanization heating pipe 5 is not affected by the lifting platform 3, and the sealing cover 29 can be installed, that is, the sealing treatment is performed. The details are as follows:

[0045] Mounting frame 17: A frame structure made of aluminum profiles, with adjustable legs installed at the bottom. By adjusting the legs, the buffer platform 1 and the conveying platform 2 can be stabilized and adjusted to different inclinations.

[0046] Buffer platform 1: preferably a buffer roller, including a roller frame and a plurality of rotating rollers arranged thereon, or a roller structure, etc.; in actual use, it is arranged at the exit of the extruder, and no power is required; during extrusion, the extruded long-sized rubber piece gradually moves onto it, and relies on the rotating rollers thereon to provide rolling friction to move forward. When a long-sized rubber piece is completely extruded, it is cut off and the extrusion is stopped, and the extruded long-sized rubber piece is completely placed on the buffer platform 1. Then the long-sized rubber piece formed on the buffer platform 1 is rolled onto the conveying platform 2, and the operation is repeated until a sufficient number of rubber pieces for a batch of vulcanization is accumulated on the conveying platform 2.

[0047] Conveying platform 2: U-shaped long trough, made of aluminum alloy. The top surface of the mounting frame 17 has a profile trough 27 perpendicular to the length direction of the buffer roller. The buffer roller is installed in the profile trough 27 through a number of bolt assemblies 28. The conveying platform 2 is arranged on one side of the buffer platform 1, and its top is lower than the top of the buffer platform 1, so that the long rubber parts on the buffer platform 1 can be moved (such as rolling) to the conveying platform 2.

[0048] The guide device includes a guide component 16 and a guide component 7. The guide component 16 is respectively arranged in the mounting frame 17, the lifting platform 3 and the vulcanization heating pipe 5. When the lifting platform 3 is raised to a high position, the guide components 16 in the mounting frame 17, the lifting platform 3 and the vulcanization heating pipe 5 are spliced ​​in sequence. The guide component 7 is installed on the conveying platform 2 and can cooperate with any guide component 16 arranged in the mounting frame 17, the lifting platform 3 and the vulcanization heating pipe 5. The guide component 16 is specifically two guide rails arranged in parallel. A mounting plate 26 is fixed at the bottom of the vulcanization heating pipe 5. The two guide rails are fixed on the mounting plate 26. The guide component 7 is a roller installed at the bottom of the conveying platform 2 and rollingly cooperates with the guide rails.

[0049] Push-pull plate 11: installed at the bottom of the front end of the conveying platform 2, on which a push-pull rod 9 is detachably installed through a push-pull stop pin 10, so as to facilitate the movement of the conveying platform 2.

[0050] Vulcanization heating pipeline 5: As shown in the figure, the vulcanization heating pipeline 5 is spliced ​​by several flange pipes 19. The flange pipe 19 is a pipe with flanges installed at both ends, which is convenient for mutual connection and sealing of the ends. Sealing covers 29 are installed at both ends of the vulcanization heating pipeline 5. By adding or subtracting the number of flange pipes 19, the length of the vulcanization heating pipeline 5 can be changed, so that long rubber parts of any length can be vulcanized, which improves the scope of application. The flange pipe 19 is thicker and can withstand greater pressure. There is no need for special structural modification in the appearance. After using the spliced ​​flange pipe 19, compared with the conventional vulcanization tank, the space utilization rate of this solution is increased by 20% and the steam consumption is reduced by 30%. The vulcanization heating pipeline 5 is tilted downward by 0.3°-0.7° from front to back. It has been verified by experiments that when the tilt angle is 0.3°-0.7°, the pushing resistance of the conveying platform 2 is reduced by about 20% and there is no slipping phenomenon. It is preferably 0.5°. The 0.5° tilt can reduce the residual condensed water by 95%, which is the best tilt angle. At the same time, the slight inclination angle helps to reduce friction, making it easier for the conveying platform 2 to enter the vulcanization heating pipeline 5 and not very laborious when being pulled out.

[0051] Support structure: Several parts are provided at the bottom of the vulcanization heating pipe 5 for fixing the vulcanization heating pipe 5; the support structure includes a position adjustment component and a height adjustment component 8; the position adjustment component is used to adjust the front and rear position of the vulcanization heating pipe 5, and the height adjustment component 8 is used to adjust the upper and lower heights of the vulcanization heating pipe 5. The support structure provides flexible adjustment capabilities through the position adjustment component and the height adjustment component 8, ensuring that the vulcanization heating pipe 5 can be accurately adjusted to the required height and position. This not only improves the adaptability and operational convenience of the equipment, for example, by adjusting the support structure to tilt the vulcanization heating pipe 5, it is convenient for the internal condensed water to be discharged, and reduces the operational difficulties and time waste caused by height or position mismatch.

[0052] The height adjustment assembly 8 includes: a base 6; a fixed plate 31, fixed to the base 6, each fixed plate 31 is provided with no less than two screws, and each screw is threadedly connected with two nuts; a movable plate 32, which is provided with a through hole corresponding to the position of the screw, and is sleeved on the screw through the through hole and is located between the two nuts on each screw.

[0053] The position adjustment component includes: a pipe support roller 18, which is installed on the movable plate 32 and rolls with the bottom of the vulcanization heating pipe 5; a U-shaped pipe clamp 30, which has threaded heads at both ends and is detachably installed on the movable plate 32 through nuts, and is used to fix the vulcanization heating pipe 5 on the movable plate 32. The position adjustment component realizes flexible adjustment of the front and rear positions of the vulcanization heating pipe 5 through the cooperation of the pipe support roller 18 and the U-shaped pipe clamp 30. The pipe support roller 18 reduces friction, making position adjustment easier, while the U-shaped pipe clamp 30 ensures the firm fixation of the vulcanization heating pipe 5, prevents loosening and displacement, and ensures stable operation of the equipment.

[0054] The environmental parameter monitoring device is arranged on the vulcanization heating pipeline 5, and is used to monitor the internal temperature and pressure in real time, and includes a plurality of temperature monitoring devices and pressure monitoring devices, and the temperature monitoring devices are evenly arranged along the length direction of the vulcanization heating pipeline 5. The temperature monitoring device can be a temperature sensor or a temperature transmitter 25, and the pressure monitoring device can be a pressure sensor or a pressure transmitter 24.

[0055] The pressure and fluid control system is arranged on one side of the vulcanization heating pipeline 5, and includes: at least one pressure regulating device for accurately controlling the air pressure in the vulcanization heating pipeline 5; at least one pressure relief device for quickly releasing the gas in the vulcanization heating pipeline 5 when necessary; at least one discharge device for removing condensed water vapor or other unnecessary fluids generated during the vulcanization process. The pressure regulating device is a pneumatic diaphragm regulating valve 23, which is installed at the top of the rear end of the vulcanization heating pipeline 5; the pressure relief device is a pressure relief valve 20, which is installed at the top of the front end of the vulcanization heating pipeline 5; the discharge device is a steam trap 22, which is installed at the bottom of the rear end of the heating pipeline to remove condensed water and avoid heat absorption affecting the internal temperature. The selection of the pressure regulating device, the pressure relief device and the drainage device belongs to the conventional selection of those skilled in the art, and will not be described in detail here. It also includes a manual drainage valve 21 and a manual pressure relief valve 14, which are used for manual drainage and manual pressure relief, and are respectively installed at the bottom and top of the rear end of the vulcanization heating pipeline 5 to ensure safe operation.

[0056] The device also includes a controller 4 : the controller 4 can automatically adjust the opening and closing size of the pneumatic diaphragm regulating valve 23 according to the signals of the temperature transmitter 25 and the pressure transmitter 24 to ensure the stability of the temperature and pressure during the vulcanization process.

[0057] Lifting platform 3: It is arranged between the mounting frame 17 and the vulcanization heating pipe 5. Specifically, it is installed on the lifting platform bracket 12. The lifting platform bracket 12 is equipped with a lifting guide rod 13 and a lifting cylinder 15 that can slide up and down. The lifting platform 3 is fixedly connected to the top of the lifting guide rod 13 and the telescopic end of the lifting cylinder 15. When the lifting platform 3 is raised to a high position, the conveying platform 2 can enter the vulcanization heating pipe 5 through the lifting platform 3; when it is lowered to a low position, the port of the vulcanization heating pipe 5 is not affected, and a sealing cover 29 can be installed for sealing.

[0058] Working principle:

[0059] First, the end of the long rubber piece extruded by the extruder falls onto the buffer roller, moves forward with the rotation of the rotating roller, and is cut off and extrusion stops after reaching the set length. After the molded long rubber piece cools for a period of time, it is pushed onto the conveying platform 2. After a certain number of pieces are accumulated, the conveying platform 2 transports the long rubber piece through the lifting platform 3 to the vulcanization heating pipe 5. After that, the lifting platform 3 descends, and the port of the vulcanization heating pipe 5 is sealed with the sealing cover 29, and heating and vulcanization begin. After completion, the pressure is released and the air is exhausted, the sealing cover 29 is opened, and the vulcanized long rubber piece is taken out to prepare for the next batch.

[0060] The inner wall of the flange pipe 19 is designed as a straight cylinder, and the inner side of the sealing cover 29 is a flat surface. After installation, the flat surface of the sealing cover 29 is perpendicular to the inner wall of the flange pipe 19, and the internal shape is regular. Long rubber parts can be arranged more closely, reducing unnecessary free space and reducing the risk of pressure loss. Smaller free space means that the internal environment is more stable, the temperature and pressure are easier to control, and the accuracy of various vulcanization parameters can be controlled more accurately, ensuring the consistency of the vulcanization process and product quality.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A vulcanization production line for long rubber parts, characterized in that: include: Mounting frame (17); A conveying platform (2) is mounted on a mounting frame (17) and is used to carry long rubber parts; A vulcanization heating device is arranged directly behind the conveying platform (2); A lifting platform (3) is arranged between the mounting frame (17) and the vulcanization heating device; It also includes: a guiding device, when the lifting platform (3) is raised to a high position, the conveying platform (2) can be moved in sequence through the guiding device through the mounting frame (17), the lifting platform (3) at a high position, and enter the vulcanizing heating device; when the lifting platform (3) is lowered to a low position, the inlet of the vulcanizing heating device is not affected by the lifting platform (3) and can be sealed.

2. A vulcanization production line for long rubber parts according to claim 1, characterized in that: Also includes: The buffer platform (1) is mounted on a mounting frame (17) and arranged in parallel on one side of the conveying platform (2), with its top higher than the top of the conveying platform (2) and one end arranged below the outlet of the extruder.

3. A vulcanization production line for long rubber parts according to claim 1, characterized in that: A push-pull plate (11) is installed at the end of the conveying platform (2), and a push-pull rod (9) is detachably installed on the push-pull plate (11) via a push-pull stop pin (10).

4. A vulcanization production line for long rubber parts according to claim 1, characterized in that: The guiding device comprises: The guide component (16) is respectively arranged in the mounting frame (17), the lifting platform (3) and the vulcanization heating device. When the lifting platform (3) is raised to a high position, the mounting frame (17), the lifting platform (3) and the guide component (16) in the vulcanization heating device are spliced ​​in sequence; The guide component (7) is installed on the conveying platform (2) and can cooperate with any guide component (16) arranged on the mounting frame (17), the lifting platform (3) and the vulcanization heating device.

5. A vulcanization production line for long rubber parts according to claim 4, characterized in that: The guide components (16) are two guide rails arranged in parallel, and the guide components (7) are guide rollers respectively rollingly matched with the two guide rails, and a plurality of guide rollers are arranged on the conveying platform (2).

6. A vulcanization production line for long rubber parts according to claim 1, characterized in that: The conveying platform (2), the lifting platform (3) and the vulcanization heating device are all inclined downward from front to back and have the same inclination, and the inclination angle is 0.3°-0.7°.

7. A vulcanization production line for long rubber parts according to claim 1, characterized in that: The vulcanization heating device comprises: The vulcanization heating pipeline (5) is formed by splicing a plurality of flange pipes (19); There are two sealing covers (29), which are respectively installed at the two ends of the vulcanization heating pipeline (5).

8. A vulcanization production line for long rubber parts according to claim 7, characterized in that: The inner wall of the flange pipe (19) is a straight cylindrical structure, and the inner side surface of the sealing cover (29) is a flat surface.

9. A vulcanization production line for long rubber parts according to claim 7, characterized in that: A pressure relief valve (20) is arranged at the front end of the vulcanization heating pipeline (5), a pneumatic diaphragm regulating valve (23) is arranged at the rear end of the vulcanization heating pipeline (5), a plurality of temperature transmitters (25) are evenly arranged on the vulcanization heating pipeline (5) along its length direction, two of which are located at the two ends of the vulcanization heating pipeline (5), and a pressure transmitter (24) is arranged on the pipeline connected to the pneumatic diaphragm regulating valve (23).

10. A transfer vulcanization method for extruding long rubber parts, comprising a vulcanization production line as claimed in any one of claims 2 to 9, characterized in that: The following steps are involved: S1, the buffer platform (1) receives the long rubber piece extruded by the extruder; S2, moving the long rubber piece from the buffer platform (1) to the conveying platform (2); S3, the lifting platform (3) is raised to a high position, and the conveying platform (2) equipped with the long rubber parts is moved sequentially through the mounting frame (17) and the lifting platform (3) at a high position to enter the vulcanization heating device through the guiding device; S4, the lifting platform (3) is lowered to a low position, and the vulcanization heating device is sealed; S5. vulcanizing the long rubber part in a vulcanizing heating device; S6, after the vulcanization is completed, the vulcanization heating device is turned on, the lifting platform (3) is raised to a high position, and the vulcanized long rubber piece is moved out of the vulcanization heating device together with the conveying platform (2) through the guiding device; S7. Remove the long rubber parts after vulcanization and repeat the above steps to achieve continuous production.

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