A bubble-porosity-suppressing denture base pressure polymerizer

Abstract

A pressure polymerizer for suppressing bubble porosity in denture bases, relating to the field of pressure polymerizer technology, includes a housing with a working chamber inside. The bottom of the working chamber has multiple zoned heating mechanisms. Multiple non-dispersive infrared gas sensors are located at the middle of the rear wall of the working chamber for detecting the content of volatile organic compounds at different locations on the denture base. An exhaust pipe is located at the upper end of the rear wall of the working chamber. A top cover is located on the upper surface of the housing. A fixing plate is located below the top cover. Multiple silicone blocks are fixed to the bottom of the fixing plate. Each silicone block has a flexible temperature sensor at its bottom for monitoring the temperature at different locations on the denture base. This solution solves the problems of poor temperature control and the inability to promptly remove residual bubbles from the polymerization chamber in pressure polymerizers.

Description

Technical Field

[0001] This utility model relates to the field of pressure polymerizer technology, specifically a pressure polymerizer for suppressing bubble porosity in denture bases. Background Technology

[0002] Denture base pressure polymerizers are devices specifically designed for the polymerization and curing of denture base materials in the field of dental restoration. They apply pressure and temperature within a sealed space to induce polymerization of the denture base resin (such as methyl methacrylate resin) under pressure. This pressure effectively reduces air bubbles and pores generated during polymerization, increases the density and strength of the base, and reduces material shrinkage. This ensures a tighter fit between the denture base and oral tissues, improving the precision, stability, and lifespan of the denture.

[0003] For example, the Chinese authorized patent CN213758654U, entitled "A Denture Pressure Aggregator," includes an aggregator body. The top front end of the aggregator body has an inner cavity. A pressure cap is installed at the top port of the inner cavity. A receiving groove is formed on the inner wall of the port of the inner cavity. A pressure pad is installed inside the receiving groove. The end face of the pressure pad fits against the side of the pressure cap. A sliding groove is formed on the bottom inner wall of the receiving groove. A guide post is fixedly connected to the bottom inner end of the pressure pad. The guide post is fixed inside the sliding groove. A spring is fixedly connected to the guide post and the inner wall of the sliding groove. During the process of the pressure cap covering and fixing itself to the inner cavity of the aggregator body, the pressure pad compresses the spring and is retracted into the receiving groove. After the pressure cap and the inner cavity are fixed, the pressure pad fits against the side of the pressure cap under the push of the spring.

[0004] Most of the existing technologies mentioned above use traditional heating and pressurizing equipment. These devices rely primarily on fixed temperature and pressure parameters during the polymerization process, lacking effective monitoring and control of gas discharge from the polymerization chamber. The exhaust structures are also relatively simple, and the fixed temperature and pressure parameters are difficult to adapt to the polymerization requirements of denture bases made of different materials and with different specifications, easily leading to uneven polymerization. Due to the lack of gas discharge monitoring, residual air bubbles in the polymerization chamber cannot be detected in time, ultimately resulting in a large number of air bubbles and pores inside the denture base. The simple exhaust structure cannot efficiently discharge the gas generated during polymerization, further exacerbating the air bubble and pore problem, affecting the strength, aesthetics, and biocompatibility of the denture base, reducing denture quality and lifespan, and therefore failing to meet current needs. To address this, we propose a pressure polymerizer for denture bases that suppresses air bubble and pores. Utility Model Content

[0005] The purpose of this invention is to provide a pressure polymerizer for denture bases that suppresses air bubbles and voids, in order to solve the problems mentioned in the background art, such as poor temperature control and inability to promptly remove residual air bubbles from the polymerization chamber.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bubble-porosity-inhibiting denture base pressure polymerizer, comprising a shell, an internal working chamber, a plurality of zoned heating mechanisms at the bottom of the working chamber, a plurality of non-dispersive infrared gas sensors at the middle position of the rear wall of the working chamber for detecting the content of volatile organic compounds at different positions of the denture base, an exhaust pipe at the upper end of the rear wall of the working chamber, a top cover at the upper end of the shell, a fixing plate below the top cover, a plurality of silicone pressure blocks fixed at the bottom of the fixing plate, and a flexible temperature sensor at the bottom of each silicone pressure block for monitoring the temperature at different positions of the denture base.

[0007] Preferably, a negative pressure pump is installed on one side of the lower end of the housing, a negative pressure pipe is installed on the negative pressure end of the negative pressure pump, and one end of the exhaust pipe is connected to the negative pressure pipe. An electric control valve is installed on the outside of the exhaust pipe.

[0008] Preferably, the partitioned heating mechanism uses ceramic heating elements, the signal output terminal of the flexible temperature sensor is connected to a microcontroller, and the output terminal of the microcontroller is connected to the partitioned heating mechanism.

[0009] Preferably, an electric push rod is installed at the middle position of the upper end of the top cover, and the movable end of the electric push rod is fixed to the fixed plate.

[0010] Preferably, adjusting bolts are installed on both sides of the upper surface of the top cover, and the lower end of the adjusting bolts is connected to the outer shell by threads.

[0011] Preferably, handles are fixedly installed on both the front and back of the upper surface of the top cover.

[0012] Preferably, a pressure pump is installed on the other side of the lower end of the housing, and one end of the pressure pump is connected to the working chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model incorporates flexible temperature sensors inside the silicone block. After the silicone block positions the denture base, multiple flexible temperature sensors can monitor the temperature at different locations on the denture base. When local temperature differences in the denture base exceed a set value, the microcontroller controls the zoned heating mechanism to adjust the temperature. The heating temperature is reduced in areas with higher temperatures and increased in areas with lower temperatures. Compared to traditional uniform heating methods, this method can quickly eliminate temperature gradients, ensuring uniform heating of all parts of the denture base during polymerization. This avoids polymerization quality problems caused by local overheating or undercooling, and also ensures a dense internal structure, significantly improving strength and stability, reducing defects such as bubbles and pores, and lowering the risk of denture base breakage.

[0015] 2. This invention utilizes multiple non-dispersive infrared gas sensors mounted on the rear wall of the working chamber, corresponding to different locations on the denture base. These sensors monitor the concentration of water vapor formed by the evaporation of volatile organic compounds (VOCs) released during resin polymerization. If a sudden increase in VOCs concentration in a localized area is detected as a risk of gas accumulation, the corresponding electronically controlled valve is activated via a microcontroller, simultaneously activating a negative pressure pump to expel the VOCs through the exhaust pipe. This timely removal of VOCs and water vapor prevents these gases from remaining inside the denture base and forming defects such as bubbles and pores. Effective gas removal during the polymerization process helps the denture base form a dense and uniform structure, improving its strength and stability and reducing the risk of breakage.

[0016] 3. This utility model features a convenient top cover. By placing the denture base to be processed into the working chamber filled with water and covering it with the top cover, the adjusting bolts on both sides are rotated to fix it to the outer shell. At this time, the electric push rod is activated, causing the fixed plate at the movable end to extend downward until the silicone pressure block contacts the denture base. This ensures that the denture base remains in a constant state during the polymerization process, unaffected by external factors. This allows the temperature sensor and gas sensor to obtain data stably, and the heating and exhaust systems to execute operations accurately. It avoids fluctuations in the processing effect caused by changes in the base position, ensuring the consistency and stability of the denture base quality. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a perspective view of the present invention after the top cover has been removed;

[0020] Figure 4 This is a perspective view of the top cover of this utility model;

[0021] Figure 5 This is a schematic diagram of the multi-channel exhaust structure of this utility model.

[0022] In the diagram: 1. Outer shell; 2. Top cover; 3. Adjusting bolt; 4. Handle; 5. Electric push rod; 6. Control panel; 7. Fixing plate; 8. Silicone pressure block; 9. Flexible temperature sensor; 10. Working chamber; 11. Non-dispersive infrared gas sensor; 12. Exhaust pipe; 13. Zoned heating mechanism; 14. Negative pressure pump; 15. Pressurization pump; 16. Negative pressure pipe; 17. Electric control valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5 This utility model provides an embodiment of a bubble-pore-suppressing denture base pressure polymerizer, comprising a housing 1, an internal working chamber 10, a plurality of zoned heating mechanisms 13 at the bottom of the working chamber 10, a plurality of non-dispersive infrared gas sensors 11 at the middle position of the rear wall of the working chamber 10 for detecting the content of volatile organic compounds at different positions of the denture base, an exhaust pipe 12 at the upper end of the rear wall of the working chamber 10, a top cover 2 at the upper end of the housing 1, a fixing plate 7 below the top cover 2, a plurality of silicone pressure blocks 8 fixed at the bottom of the fixing plate 7, and a flexible temperature sensor 9 at the bottom of each silicone pressure block 8 for monitoring the temperature at different positions of the denture base;

[0025] The zoned heating mechanism 13 operates independently, heating different areas of the substrate according to their temperature requirements; the non-dispersive infrared gas sensor 11 monitors the concentration of volatile organic compounds in the working chamber in real time; the exhaust pipe 12 is used to discharge harmful gases; the top cover 2 seals the working chamber to prevent external interference. Zoned heating enables precise temperature control, ensuring uniform polymerization; the gas sensor promptly detects the risk of gas accumulation, ensuring substrate quality; the enclosed space reduces external contamination, improving production safety and stability.

[0026] Please see Figure 2 and Figure 5 A negative pressure pump 14 is installed on one side of the lower end inside the outer casing 1. A negative pressure pipe 16 is installed on the negative pressure end of the negative pressure pump 14, and one end of the exhaust pipe 12 is connected to the negative pressure pipe 16. An electric control valve 17 is installed on the outside of the exhaust pipe 12.

[0027] The non-dispersive infrared gas sensor 11 detects the concentration of volatile organic compounds (VOCs) released during resin polymerization using the principle of infrared spectral absorption. When the VOCs concentration suddenly increases in a local area, it is determined to be a risk of gas accumulation. The microcontroller controls the opening of the electronically controlled valve 17 on the corresponding exhaust pipe 12, and at the same time, the negative pressure pump 14 starts to discharge the VOCs through the exhaust pipe 12. This system accurately monitors gas concentration, intelligently identifies risks, and quickly removes harmful gases, preventing gas residue from forming bubbles and pores, ensuring the quality of denture bases, improving production efficiency, and reducing the scrap rate.

[0028] Please see Figure 2The zoned heating mechanism 13 uses ceramic heating elements. The signal output of the flexible temperature sensor 9 is connected to a microcontroller, and the output of the microcontroller is connected to the zoned heating mechanism 13. The flexible temperature sensor 9 inside the silicone pad 8 monitors the temperature at different locations on the denture base and transmits the data to the microcontroller. When local temperature differences in the denture base exceed a set value, the microcontroller controls the zoned heating mechanism 13 to adjust the temperature. The heating temperature of the ceramic heating elements is reduced in areas with high temperatures, and the heating temperature is increased in areas with low temperatures, achieving temperature uniformity. By precisely adjusting the temperature, temperature differences in the denture base are eliminated, ensuring uniform polymerization, improving the strength, stability, and quality of the denture base, and reducing rework caused by uneven temperature.

[0029] Please see Figure 2 and Figure 4 An electric push rod 5 is installed at the middle of the upper end of the top cover 2, and the movable end of the electric push rod 5 is fixed to the fixing plate 7. The denture base to be processed is placed into the working chamber 10 filled with water, the top cover 2 is closed, and the adjusting bolts 3 on both sides are rotated to fix it to the outer shell 1 to ensure a seal. The electric push rod 5 is opened, causing the movable end of the fixing plate 7 to extend downward until the silicone pressure block 8 contacts the denture base. The flexible properties of silicone are used to achieve stable fixation and precise positioning of the base, and at the same time, the flexible temperature sensor 9 begins to monitor the temperature of the base. The advantages are that the convenient top cover simplifies the operation process and improves efficiency; the adjusting bolts and electric push rod work together to achieve stable and precise positioning and prevent the base from shifting; the silicone pressure block adapts to the curved surface of the base and provides stable contact conditions for temperature monitoring, ensuring production stability and base quality.

[0030] Please see Figure 1 and Figure 2 Adjusting bolts 3 are installed on both sides of the upper surface of the top cover 2, and the lower ends of the adjusting bolts 3 are threadedly connected to the outer shell 1. Handles 4 are fixedly installed at the front and back of the upper surface of the top cover 2. After the denture base is placed in, the top cover 2 is closed, and the operator holds the handle 4 and rotates the adjusting bolts 3 to make the top cover 2 and the outer shell 1 tightly fixed through the threaded connection, forming a sealed working chamber 10. The handles 4 facilitate the removal and placement of the top cover 2. This ensures that the top cover and the outer shell are tightly fixed, preventing liquid leakage and gas entry, and ensuring a stable polymerization environment. The handle design facilitates operation, improves convenience, and reduces labor intensity.

[0031] Please see Figure 2 A pressure pump 15 is installed on the other side of the lower end inside the outer shell 1, and one end of the pressure pump 15 is connected to the working cavity 10. During the denture base polymerization process, the pressure pump 15 applies pressure to the working cavity 10 according to the set parameters. The pressure is evenly transmitted to the denture base through the medium in the working cavity, promoting the polymerization reaction of the resin material and ensuring the density of the internal structure of the base. The benefits are that it provides stable pressure, ensures sufficient resin polymerization, reduces internal air bubbles and pores, improves the strength and quality of the denture base, and enhances its durability and biocompatibility.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bubble pore inhibition denture base pressure polymerizer comprising a housing (1), characterized in that: The outer shell (1) has a working chamber (10) inside. The bottom of the working chamber (10) is provided with multiple partition heating mechanisms (13). Multiple non-dispersive infrared gas sensors (11) are provided at the middle position of the rear wall of the working chamber (10) for detecting the content of volatile organic compounds at different positions of the denture base. An exhaust pipe (12) is provided at the upper end of the rear wall of the working chamber (10). The upper surface of the outer shell (1) is provided with a top cover (2). A fixing plate (7) is provided below the top cover (2). Multiple silicone pressure blocks (8) are fixed at the bottom of the fixing plate (7). Each silicone pressure block (8) is provided with a flexible temperature sensor (9) at the bottom for monitoring the temperature at different positions of the denture base.

2. A bubble pore inhibiting denture base pressure polymerizer according to claim 1, wherein: A negative pressure pump (14) is installed on one side of the lower end inside the outer shell (1). A negative pressure pipe (16) is installed on the negative pressure end of the negative pressure pump (14), and one end of the exhaust pipe (12) is connected to the negative pressure pipe (16). An electric control valve (17) is installed on the outside of the exhaust pipe (12).

3. A bubble pore inhibiting denture base pressure polymerizer according to claim 1, wherein: The partitioned heating mechanism (13) uses ceramic heating elements, and the signal output terminal of the flexible temperature sensor (9) is connected to the microcontroller, and the output terminal of the microcontroller is connected to the partitioned heating mechanism (13).

4. A bubble pore inhibiting denture base pressure polymerizer according to claim 1, wherein: An electric push rod (5) is installed at the middle position of the upper end of the top cover (2), and the movable end of the electric push rod (5) is fixed to the fixing plate (7).

5. A bubble pore inhibiting denture base pressure polymerizer according to claim 4, wherein: Adjusting bolts (3) are installed on both sides of the upper surface of the top cover (2), and the lower end of the adjusting bolts (3) is connected to the outer shell (1) by threads.

6. A bubble pore inhibiting denture base pressure polymerizer according to claim 4, wherein: The top cover (2) has handles (4) fixedly installed on both the front and back of its upper surface.

7. A bubble pore inhibiting denture base pressure polymerizer according to claim 1, wherein: A pressure pump (15) is installed on the other side of the lower end inside the outer shell (1), and one end of the pressure pump (15) is connected to the working chamber (10).

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