Improved baking oven for polyurethane sealing element

Abstract

The utility model relates to the field of material processing equipment, and particularly discloses an improved baking oven for a polyurethane sealing element, which comprises an oven body, a turntable rotationally arranged in the oven body and used for bearing a blank body of the polyurethane sealing element, a driving mechanism used for driving the turntable to rotate, and a transmission mechanism used for transmitting power of the driving mechanism, a blank body of the polyurethane sealing element is placed in the rotating disc, and the driving mechanism drives the rotating disc to rotate through the transmission mechanism, so that the blank body of the polyurethane sealing element is uniformly heated in all directions in the sintering process. A traditional heating mode causes uneven temperature distribution in a furnace, so that sintered products are uneven in quality and difficult to meet the ever-increasing high-quality production requirements, and on the other hand, a temperature control system is poor in precision and cannot accurately meet the sintering process requirements of specific materials, so that research, development and application of new materials are restricted.

Description

Technical Field

[0001] This utility model relates to the field of material processing equipment technology, and in particular discloses an improved baking oven for polyurethane seals. Background Technology

[0002] Currently, in the materials sintering industry, common sintering furnaces suffer from a series of problems affecting production efficiency and product quality. On the one hand, traditional heating methods result in uneven temperature distribution within the furnace, leading to inconsistent product quality and failing to meet the growing demand for high-quality production. On the other hand, the temperature control system lacks precision, failing to accurately achieve the sintering process requirements of specific materials, thus hindering the research and application of new materials. Furthermore, some sintering furnaces have unreasonable structural designs, which not only increase the manufacturing and maintenance costs of the equipment but also lead to excessive energy consumption, contradicting the development trend of energy conservation and emission reduction. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an improved baking oven for polyurethane seals.

[0004] To achieve the above objectives, this utility model provides an improved baking oven for polyurethane seals, comprising a furnace body, a turntable rotatably disposed within the furnace body for supporting the polyurethane seal blank, a drive mechanism for driving the turntable to rotate, and a transmission mechanism for transmitting power to the drive mechanism. The polyurethane seal blank is placed inside the turntable, and the drive mechanism drives the turntable to rotate via the transmission mechanism, so that the polyurethane seal blank is heated evenly in all directions during the sintering process.

[0005] Furthermore, the transmission mechanism adopts a magnetic coupling drive method. The transmission mechanism includes a permanent magnet disposed on the turntable and located outside the furnace body. The drive mechanism is located outside the furnace body and is equipped with an electromagnetic component for attracting the permanent magnet. After the electromagnetic component is energized, it attracts the permanent magnet. The drive mechanism drives the turntable to rotate by means of the attraction between the electromagnetic component and the turntable.

[0006] Furthermore, an improved polyurethane sealing oven also includes a door body, which is connected to the oven body via a hinge. The door body is used to cover or close the inner cavity of the oven body. The door body is provided with a feeding port communicating with the inner cavity of the oven body and a first sealing element for opening and closing the feeding port.

[0007] Furthermore, an improved baking oven for polyurethane sealants also includes a temperature control mechanism, hot air vents, an air duct, an upper fan, and a lower fan. The temperature control mechanism is located on one side of the oven body, and the hot air vents are located on both sides of the oven body. An external heating unit inputs hot air into the oven body through the hot air vents for sintering the polyurethane sealants. The oven body has an inner cavity that accommodates a turntable. The air duct is located on the side wall of the oven body. The upper fan is located at the upper end of the oven body, and the lower fan is located at the lower end of the oven body. The upper fan and the lower fan are used to connect the inner cavity and the air duct. The upper fan is used to draw air from the inner cavity of the oven body into the air duct, and the lower fan is used to draw air from the air duct into the inner cavity of the oven body. The temperature control mechanism adjusts the oven body temperature by changing the wind speed of the upper fan and the lower fan. The external heating unit inputs hot air into the oven body through the hot air vents. The temperature control mechanism, the upper fan, the lower fan, and the air duct work together to adjust the temperature inside the oven body to ensure sintering at a suitable temperature.

[0008] Furthermore, the furnace body is provided with support feet at the bottom and heat sinks on the sides. The furnace body dissipates heat from all four sides away from the ground through the support feet, and the side walls of the furnace body absorb the heat transmitted from the area above and around the turntable. The heat sinks conduct this heat away to maintain a stable temperature inside the furnace.

[0009] Furthermore, the first seal is made of high-temperature resistant rubber. When the door is closed, the first seal is compressed to fill the gap between the furnace body and the door body, forming a sealing barrier to prevent high-temperature gas inside the furnace body from leaking out of the furnace body.

[0010] Furthermore, the turntable is provided with a high-temperature resistant and high-thermal-conductivity coating with a thickness of 0.5-2mm. The polyurethane seal blank is placed on the turntable for sintering, and the coating is used to improve wear resistance and heat conduction uniformity.

[0011] Furthermore, the furnace body is equipped with a temperature sensor for detecting the sintering temperature of the furnace body, and the temperature sensor is connected to the temperature control mechanism.

[0012] Furthermore, the turntable is provided with an annular protrusion located at the upper edge of the turntable and arranged around the central axis of the turntable. The annular protrusion is used to limit and stop the polyurethane seal carried by the turntable.

[0013] Furthermore, the furnace body is equipped with casters for easy movement.

[0014] The beneficial effects of this utility model are:

[0015] (1) Uniform heating: The turntable is driven by the drive mechanism and the transmission mechanism to rotate, so that the polyurethane seal blank is heated evenly in all directions during the sintering process, which effectively improves product quality and reduces product defects caused by uneven heating.

[0016] (2) Precise temperature control: Equipped with a temperature control mechanism, air duct, upper fan and lower fan, the furnace temperature is adjusted by adjusting the wind speed of the upper fan and lower fan to ensure precise control of the furnace temperature and meet the needs of different sintering processes.

[0017] (3) Reduce heat loss: The door is equipped with a feeding port and a first sealing element. When supplementing materials, it is not necessary to frequently open the furnace door, which reduces the heat loss during the opening operation of the sintering furnace, improves energy utilization efficiency, and reduces production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an improved polyurethane sealing oven according to the present invention;

[0019] Figure 2 This is a schematic diagram of the turntable structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the furnace body structure of this utility model.

[0021] The reference numerals in the attached drawings include: 1. Furnace body; 2. Turntable; 3. Drive mechanism; 4. Transmission mechanism; 5. Coating; 6. Permanent magnet; 7. Door; 8. Feed port; 9. First seal; 11. Electromagnetic assembly; 12. Air duct; 13. Temperature control mechanism; 14. Upper fan; 15. Lower fan; 16. Support leg; 17. Heat sink; 18. Temperature sensor; 19. Annular protrusion; 21. Caster wheel; 22. Hot air vent. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] Please see Figures 1 to 3 As shown, an improved baking oven for polyurethane seals according to this utility model includes a furnace body 1, a turntable 2 rotatably disposed inside the furnace body 1 for carrying the polyurethane seal blank, a drive mechanism 3 for driving the turntable 2 to rotate, and a transmission mechanism 4 for transmitting power to the drive mechanism 3. The polyurethane seal blank is placed inside the turntable 2, and the drive mechanism 3 drives the turntable 2 to rotate via the transmission mechanism 4, so that the polyurethane seal blank is heated evenly in all directions during the sintering process.

[0024] In actual use, the drive mechanism 3 drives the turntable 2 to rotate via the transmission mechanism 4, ensuring that the polyurethane seal blank is heated evenly from all directions during the sintering process, greatly improving product quality. Uniform heating effectively avoids uneven internal structure caused by localized temperature differences, significantly reducing quality defects such as bubbles, deformation, and inconsistent hardness. This ensures more stable and reliable performance indicators, thereby increasing the product yield and meeting the growing market demand for high-quality polyurethane seals.

[0025] Specifically, the transmission mechanism 4 adopts a magnetic coupling drive method. The transmission mechanism 4 includes a permanent magnet 6 disposed on the turntable 2 and located outside the furnace body 1. The drive mechanism 3 is located outside the furnace body 1. The drive mechanism 3 is provided with an electromagnetic component 11 for attracting the permanent magnet 6. After the electromagnetic component 11 is energized, it attracts the permanent magnet 6. The drive mechanism 3 drives the turntable 2 to rotate by means of the attraction between the electromagnetic component 11 and the turntable 2.

[0026] In practical use, the transmission mechanism 4 adopts a magnetic coupling drive method, which brings many significant advantages. When the electromagnetic component 11 is energized, the current generates a magnetic field around it. The electromagnetic component 11 can control the direction of the generated magnetic field by changing the direction of the current. The permanent magnet 6 itself has a fixed magnetic field. When the magnetic field generated by the electromagnetic component 11 acts on the permanent magnet 6, the two magnetic fields will attract each other. Since the permanent magnet 6 is fixed at the bottom of the turntable 2, when the drive mechanism 3 drives the electromagnetic component 11 to rotate, the permanent magnet 6 will drive the turntable 2 to rotate together. Preferably, the electromagnetic component 11 and the permanent magnet 6 form a clearance gap, so that the electromagnetic component 11 and the permanent magnet 6 will not directly contact each other, thus completing contactless rotation. Contactless rotation avoids the friction loss caused by direct contact of parts in traditional mechanical transmission methods, reduces equipment maintenance costs and downtime for repair, improves equipment operating efficiency, and ensures that the sintering process of the polyurethane sealing blank can be carried out continuously and stably, providing a stable equipment foundation for improving product quality. On the other hand, by changing the current of the electromagnetic component 11, the attraction between the electromagnetic component 11 and the permanent magnet 6 can be changed, thereby ensuring that the turntable 2 can carry polyurethane sealing blanks of different weights and avoiding slippage between the electromagnetic component 11 and the permanent magnet 6, which would prevent the drive mechanism 3 from driving the turntable 2 to rotate.

[0027] Specifically, an improved polyurethane sealing oven further includes a door 7, which is connected to the oven body 1 by a hinge. The door 7 is used to cover or close the inner cavity of the oven body 1. The door 7 is provided with a feeding port 8 that communicates with the inner cavity of the oven body 1 and a first sealing element 9 for opening and closing the feeding port 8.

[0028] In practical use, the addition of door 7 and related components brings new and significant benefits based on the original structural advantages. Firstly, the cooperation between the feeding port 8 and the first sealing element 9 greatly reduces heat loss during furnace opening operations, maintains stable furnace temperature, and avoids the impact of frequent door opening and closing on furnace temperature fluctuations on the sintering quality of the billet, further ensuring uniform heating of the product and contributing to improved product quality. Secondly, the injection of liquid or semi-liquid supplementary materials through the feeding port 8 during sintering to refine the billet shape meets the production needs of complex products, expands product design space, and enhances product functionality and applicability. Furthermore, reducing the number of door openings not only saves energy but also shortens the production cycle, improves production efficiency, reduces production costs, and makes the entire production process more efficient and environmentally friendly.

[0029] Specifically, an improved baking oven for polyurethane sealants further includes a temperature control mechanism 13, hot air vents 22, an air duct 12, an upper fan 14, and a lower fan 15. The temperature control mechanism 13 is located on one side of the exterior of the oven body 1, and the hot air vents 22 are located on both sides of the oven body 1. An external heating unit inputs hot air into the oven body 1 through the hot air vents 22 for sintering the polyurethane sealants. The oven body 1 has an inner cavity that accommodates the turntable 2. The air duct 12 is located on the side wall of the oven body 1, the upper fan 14 is located at the upper end of the oven body 1, and the lower fan 15 is located on the oven body 1. At the lower end, the upper fan 14 and the lower fan 15 are used to connect the inner cavity and the air duct 12. The upper fan 14 is used to draw air from the inner cavity of the furnace body 1 into the air duct 12, and the lower fan 15 is used to draw air from the air duct 12 into the inner cavity of the furnace body 1. The temperature control mechanism 13 adjusts the temperature of the furnace body 1 by changing the wind speed of the upper fan 14 and the lower fan 15. The external heating unit inputs hot air into the furnace body 1 through the hot air hole 22. The temperature control mechanism 13, the upper fan 14, the lower fan 15 and the air duct 12 work together to adjust the temperature inside the furnace body 1 to ensure sintering at the appropriate temperature.

[0030] In actual use, the temperature control mechanism 13 regulates the airflow speed of the upper fan 14 and the lower fan 15 to achieve flexible and precise adjustment of the furnace body 1 temperature. After hot air is input from the external heating unit, the upper and lower fans 15 can quickly adjust the airflow direction and speed inside the furnace body 1 according to actual needs, promptly dispersing local overheated or undercooled areas, ensuring uniform and stable temperature throughout the furnace, meeting the stringent temperature requirements of different polyurethane sealing component sintering processes, effectively improving product sintering quality, and reducing the defect rate.

[0031] Specifically, the furnace body 1 is provided with support feet 16 at the bottom and heat sinks 17 on the side of the furnace body 1. The furnace body 1 dissipates heat from all four sides away from the ground through the support feet 16. The side wall of the furnace body 1 absorbs the heat transmitted from the area above and around the turntable 2. The heat sinks 17 conduct this heat away to maintain a stable temperature inside the furnace.

[0032] In practical use, building upon existing advantages in temperature control and drive design, the addition of support feet 16 at the bottom of the furnace body 1 and heat sinks 17 on the sides further enhances equipment performance. The support feet 16 keep the furnace body 1 away from the ground, enabling four-sided heat dissipation. This effectively prevents heat accumulation at the bottom of the furnace body 1 due to low ground temperature or poor heat dissipation, ensuring uniform temperature distribution throughout the furnace body 1. This provides stable external conditions for uniform heating of the billet, contributing to improved product quality. The heat sinks 17 quickly absorb excess heat from above and around the turntable 2 and conduct it away promptly, maintaining a stable furnace temperature and preventing temperature imbalance caused by localized overheating, which could affect sintering results. A stable furnace temperature reduces thermal expansion and contraction stress on components caused by temperature fluctuations, extending equipment lifespan, reducing maintenance costs, ensuring production continuity and stability, and providing a reliable guarantee for large-scale, efficient production of polyurethane seals.

[0033] Specifically, the first sealing element 9 is made of high-temperature resistant rubber. When the door 7 is closed, the first sealing element 9 will be compressed to fill the gap between the furnace body 1 and the door 7 to form a sealing barrier, preventing the high-temperature gas inside the furnace body 1 from leaking out of the furnace body 1.

[0034] In practical use, the use of high-temperature resistant rubber for the first sealing element 9 provides crucial protection for the operation of the sintering furnace and product production. From an energy utilization perspective, the effective blocking of high-temperature gases reduces heat loss and energy consumption, allowing for more efficient use of energy during the sintering process and lowering production costs. Regarding product quality, external impurities cannot enter the furnace, preventing contamination of the polyurethane sealing element blank and ensuring that the physical and chemical properties of the product remain unaffected, thus improving the product qualification rate. From an equipment maintenance perspective, the blocking of high-temperature gases and impurities reduces corrosion and damage to the internal structure and other components of the furnace body 1, lowering the probability of equipment failure, extending equipment lifespan, reducing the frequency and cost of maintenance and replacement, and improving production stability and continuity.

[0035] Specifically, the turntable 2 is provided with a high temperature resistant and high thermal conductivity coating 5, the coating 5 having a thickness of 0.5-2mm. The blank of the polyurethane seal is placed on the turntable 2 for sintering. The coating 5 is used to improve wear resistance and heat conduction uniformity.

[0036] In practical applications, the high-temperature resistant and high-thermal-conductivity coating 5 on the turntable 2 plays a crucial role in the improved polyurethane sealant sintering furnace. From the perspective of improved wear resistance, during frequent operation, coating 5 effectively resists friction between the blank and the turntable 2, reducing wear on the turntable 2, extending its service life, and lowering the cost of replacing parts. Regarding heat conduction, the 0.5-2mm coating thickness ensures sufficient heat transfer efficiency without being too thick and affecting the heat transfer rate. This ensures uniform heat transfer to the polyurethane sealant blank, resulting in even heating of all parts of the blank during sintering. This avoids quality problems such as product deformation and cracking caused by localized temperature differences, significantly improving the product yield. Simultaneously, uniform heat conduction also helps optimize the sintering process, shorten sintering time, and improve production efficiency, further enhancing production benefits while ensuring product quality.

[0037] Specifically, the furnace body 1 is equipped with a temperature sensor 18 for detecting the sintering temperature of the furnace body 1, and the temperature sensor 18 is connected to the temperature control mechanism 13.

[0038] In practical use, the temperature sensor 18 installed inside the furnace body 1 is connected to the temperature control mechanism 13, which is of great significance for the improved sintering furnace for polyurethane sealants. From a temperature control perspective, the temperature sensor 18 can detect the sintering temperature of the furnace body 1 in real time and accurately, and immediately feed the data back to the temperature control mechanism 13. The temperature control mechanism 13 then makes rapid adjustments accordingly, achieving precise control of the furnace temperature and ensuring that the furnace temperature remains stable at the set value suitable for sintering the polyurethane sealant blank. Regarding product quality, precise temperature control avoids product defects caused by temperature fluctuations, such as uneven hardness and deformation, effectively improving the product yield and ensuring stable and reliable product quality. In terms of equipment operation, a stable furnace temperature reduces the thermal expansion and contraction stress caused by temperature changes, reduces wear and tear on equipment components, extends equipment lifespan, reduces the probability of equipment failure, ensures production continuity, improves production efficiency, and reduces equipment maintenance costs.

[0039] Specifically, the turntable 2 is provided with an annular protrusion 19, which is located at the upper edge of the turntable 2 and surrounds the central axis of the turntable 2. The annular protrusion 19 is used to limit and stop the polyurethane seal carried by the turntable 2.

[0040] In practical use, the annular protrusion on the turntable plays a crucial role in the operation of the improved polyurethane seal sintering furnace. Regarding product stability, the annular protrusion, located at the upper edge of the turntable and surrounding the central axis, effectively restricts the position of the polyurethane seal, preventing displacement during turntable rotation. This ensures the seal remains within a suitable heating zone throughout the sintering process, guaranteeing consistency and stability. From a production safety perspective, it acts as a robust barrier, preventing the polyurethane seal from detaching from the turntable during high-speed rotation. This avoids equipment damage and personnel injuries caused by the seal being thrown out, creating a safe and reliable production environment. In terms of product quality assurance, the stable placement ensures uniform heating of the seal, effectively reducing uneven heating caused by positional changes. This lowers the probability of quality defects such as deformation and cracking, significantly improving the product yield.

[0041] Specifically, the furnace body 1 is provided with casters 21 for easy movement.

[0042] In practical use, the addition of casters 21 under the base greatly enhances the practical value of the improved polyurethane sealing sintering furnace. Regarding equipment mobility, the casters 21 allow the sintering furnace to move easily and flexibly within the workshop. Whether for routine relocation or during equipment maintenance and repair, it can be quickly transported to a designated location, significantly improving equipment mobility. From a production layout perspective, it facilitates flexible placement of the sintering furnace according to production processes and available space, optimizing the workshop layout and improving space utilization. Furthermore, when moving goods, the casters 21 allow a single person to easily push the sintering furnace, reducing manpower input during transport, lowering labor costs, and improving the efficiency of goods handling. This ensures efficient connection between production processes and further enhances overall production efficiency.

[0043] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An improved baking oven for polyurethane seals, characterized in that: The furnace includes a furnace body (1), a turntable (2) rotatably arranged inside the furnace body (1) for carrying the polyurethane seal blank, a drive mechanism (3) for driving the turntable (2) to rotate, and a transmission mechanism (4) for transmitting the power of the drive mechanism (3). The polyurethane seal blank is placed inside the turntable (2), and the drive mechanism (3) drives the turntable (2) to rotate through the transmission mechanism (4), so that the polyurethane seal blank is heated evenly in all directions during the sintering process.

2. The improved baking oven for polyurethane seals according to claim 1, characterized in that: The transmission mechanism (4) adopts a magnetic coupling drive method. The transmission mechanism (4) includes a permanent magnet (6) set on the turntable (2) and located outside the furnace body (1). The drive mechanism (3) is located outside the furnace body (1). The drive mechanism (3) is provided with an electromagnetic component (11) for attracting the permanent magnet (6). After the electromagnetic component (11) is energized, it attracts the permanent magnet (6). The drive mechanism (3) drives the turntable (2) to rotate by means of the attraction between the electromagnetic component (11) and the turntable (2).

3. The improved baking oven for polyurethane seals according to claim 1, characterized in that: An improved polyurethane seal baking oven further includes a door (7), which is connected to the oven body (1) by a hinge. The door (7) is used to cover or close the inner cavity of the oven body (1). The door (7) is provided with a feeding port (8) communicating with the inner cavity of the oven body (1) and a first seal (9) for opening and closing the feeding port (8).

4. The improved baking oven for polyurethane seals according to claim 1, characterized in that: An improved baking oven for polyurethane seals further includes a temperature control mechanism (13), hot air vents (22), an air duct (12), an upper fan (14), and a lower fan (15). The temperature control mechanism (13) is located on one side of the outside of the oven body (1), and the hot air vents (22) are located on both sides of the oven body (1). An external heating unit inputs hot air into the oven body (1) through the hot air vents (22) for sintering the polyurethane seals. The oven body (1) has an inner cavity that accommodates a turntable (2). The air duct (12) is located on the side wall of the oven body (1). The upper fan (14) is located at the upper end of the oven body (1), and the lower fan (15) is located at the lower end of the oven body (1). The upper fan (14) and the lower fan (15) are used to connect the inner cavity and the air duct (12). The upper fan (14) is used to draw air from the inner cavity of the furnace body (1) into the air duct (12), and the lower fan (15) is used to draw air from the air duct (12) into the inner cavity of the furnace body (1). The temperature control mechanism (13) adjusts the temperature of the furnace body (1) by changing the wind speed of the upper fan (14) and the lower fan (15). The external heating unit inputs hot air into the furnace body (1) through the hot air hole (22). The temperature control mechanism (13), the upper fan (14), the lower fan (15) and the air duct (12) work together to adjust the temperature inside the furnace body (1) to ensure sintering at the appropriate temperature.

5. The improved baking oven for polyurethane seals according to claim 1, characterized in that: The furnace body (1) is provided with support feet (16) at the bottom and heat sinks (17) on the side of the furnace body (1). The furnace body (1) dissipates heat away from the ground through the support feet (16). The side wall of the furnace body (1) absorbs the heat transmitted from the area above and around the turntable (2). The heat sinks (17) conduct this heat away to maintain the stable temperature inside the furnace.

6. An improved baking oven for polyurethane seals according to claim 3, characterized in that: The first seal (9) is made of high temperature resistant rubber. When the door (7) is closed, the first seal (9) will be compressed to fill the gap between the furnace body (1) and the door (7) to form a sealing barrier to prevent the high temperature gas inside the furnace body (1) from leaking out of the furnace body (1).

7. An improved baking oven for polyurethane seals according to claim 1, characterized in that: The turntable (2) is provided with a high temperature resistant and high thermal conductivity coating (5), the coating (5) is 0.5-2mm thick, the polyurethane seal blank is placed on the turntable (2) for sintering, and the coating (5) is used to improve wear resistance and heat conduction uniformity.

8. An improved baking oven for polyurethane seals according to claim 4, characterized in that: The furnace body (1) is equipped with a temperature sensor (18) for detecting the sintering temperature of the furnace body (1), and the temperature sensor (18) is connected to the temperature control mechanism (13).

9. An improved baking oven for polyurethane seals according to claim 1, characterized in that: The turntable (2) is provided with an annular protrusion (19), which is located at the upper edge of the turntable (2). The annular protrusion (19) is arranged around the central axis of the turntable (2) and is used to limit and stop the polyurethane seal carried by the turntable (2).

10. An improved baking oven for polyurethane seals according to claim 1, characterized in that: The furnace body (1) is equipped with casters (21) for easy movement.

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