Baked porcelain tooth processing sintering porcelain furnace for false tooth processing

Abstract

The invention discloses a porcelain tooth processing sintering porcelain furnace for false tooth processing, and relates to the technical field of porcelain furnaces. The device comprises a base mechanism, a fixing plate is arranged at the edge of the top of the base mechanism, an oven assembly is arranged on the front face of the fixing plate, an electric threaded rod is arranged at the bottom of one end of the back of the base mechanism, and a transmission plate penetrates through and is in threaded connection with the electric threaded rod. According to the invention, the baked false tooth is protected by virtue of the heat-preservation sealing of the telescopic heat-preservation ring, so that the possibility of temperature difference change is reduced by virtue of a relatively narrow environment in the telescopic heat-preservation ring; the possibility that air holes are formed in the surface of the false tooth due to temperature difference in a local range in the process that the interior of the oven assembly is heated to the specified baking temperature is avoided, the temperature sensor can detect the temperature in the oven in real time, and the situation that the temperature in the oven cannot reach the proper temperature or exceeds the proper temperature, and then the production quality of the baked porcelain tooth is affected is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of porcelain furnaces, and specifically to a sintering porcelain furnace for processing porcelain teeth for denture processing. Background Art

[0002] As a common restoration method in the modern dental field, porcelain teeth are mainly used to beautify and restore the function and appearance of teeth. Porcelain teeth combine the strength of metal and the beauty of porcelain, can effectively restore the shape of the tooth body, and a porcelain furnace is required to bake it during the production process.

[0003] The patent with the patent announcement number CN219160969U discloses a sintering porcelain furnace for processing porcelain teeth for denture processing, including a base. An installation seat is arranged on the upper part of the base, an oven is installed on the front side of the installation seat, a lifting frame is arranged inside the installation seat, first tooth grooves are opened on both the left and right sides of the lifting frame, the front side of the lifting frame penetrates through the installation seat and is connected to a placement seat, gears are arranged inside the installation seat, the inner diameter of the gear meshes with the first tooth groove, a U-shaped frame is arranged inside the installation seat, second tooth grooves are opened on the inner sides of the U-shaped frame, and the second tooth groove matches the outer diameter of the gear. This patent can effectively lift the placement seat and the protective shell simultaneously, effectively protect the oven, avoid the temperature overflow from causing harm to the human body, improve the safety performance of the device, and assist in better firing the porcelain body.

[0004] However, this device still has deficiencies: This device improves safety to avoid harm to the human body caused by high temperature. However, when the porcelain teeth enter the interior of the porcelain furnace and are heated to the specified baking temperature in the furnace, the porcelain teeth are prone to uneven heating, which easily leads to stress concentration in local areas of the tooth body and increases the probability of pores generated during the baking of the porcelain teeth. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sintering porcelain furnace for processing porcelain teeth for denture processing, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a porcelain tooth processing sintering porcelain furnace for denture processing, comprising a base mechanism, a fixed plate is arranged at the top edge of the base mechanism, an oven assembly is arranged on the front of the fixed plate, an electric threaded rod is arranged at the bottom of one end of the back of the base mechanism, a transmission plate is penetrated inside the electric threaded rod and threadedly connected, an anti-interference device with a temperature equalization function is arranged on the periphery of the transmission plate, an anti-damage device with a speed reduction function is arranged above the anti-interference device, a storage rack is fixedly installed at one end of the front of the transmission plate, a rack plate is fixedly installed on the top of the transmission plate, a toothed roller is rotatably installed inside one end of the back of the oven assembly through a fixed rod, the toothed roller is meshed with the rack plate, an L-shaped connecting plate is slidably installed on the back of the inner wall of the oven assembly, and a plurality of transmission teeth are equidistantly and fixedly installed on the L-shaped connecting plate close to the rack plate, a telescopic insulation ring is fixedly installed on the top of the inner wall of the oven assembly, an insulation box is fixedly connected to the bottom of the oven assembly, a temperature sensor is installed inside the insulation box, and a probe of the temperature sensor extends out of the insulation box.

[0007] The outer wall of the telescopic insulation ring fixed end is slidably installed with a water-absorbing cotton ring, and a vertical rod is fixedly installed between the bottom of one end of the back of the water-absorbing cotton ring and the bottom of the inner wall of the L-shaped connecting plate. A through hole is provided at the bottom of the oven assembly, and the outer wall of the transmission plate is slidably installed inside the fixed plate. The rack is located directly below the through hole of the oven assembly, and the top of the rack plate passes through the bottom of the oven assembly. The transmission tooth is meshed with the toothed roller at one end close to the rack plate, and the outer wall of the back of the telescopic end of the telescopic insulation ring is fixedly connected to the end of the bottom of the L-shaped connecting plate away from the rack plate. The denture to be baked is placed inside the rack, and the electric threaded rod is started. When the electric threaded rod rotates, it drives the threaded transmission plate to slide upward along the inside of the fixed plate, and the transmission plate drives the rack to move upward. The rack drives the denture to enter the oven assembly from the through hole at the bottom of the oven assembly for baking. When baking is completed The rear electric threaded rod reverses to reset the transmission plate, and the transmission plate drives the storage rack out of the oven assembly; when the transmission plate moves upward, it drives the rack plate to move synchronously, and when the rack plate moves upward, it engages with the toothed roller, causing the toothed roller to rotate along the outer wall of the fixed rod. At this time, the toothed roller drives the transmission tooth engaged at the other end to generate a downward force. When the transmission tooth generates a downward force, it drives the L-shaped connecting plate to slide downward along the back of the inner wall of the oven assembly. The L-shaped connecting plate pulls the telescopic end of the telescopic insulation ring to extend downward. At this time, the telescopic end of the telescopic insulation ring covers the denture that is upward and enters the oven assembly, forming a sealed environment for the denture being baked. At the same time, when the L-shaped connecting plate moves downward, it drives the vertical rod to move synchronously, and the vertical rod pulls the water-absorbing cotton ring to slide downward along the fixed end of the telescopic insulation ring. The water-absorbing cotton ring wipes the water droplets on the outer wall of the telescopic insulation ring due to the temperature difference during the start and stop stages of the oven assembly.

[0008] According to the above technical solution, the anti-interference device includes two U-shaped blocks, which are symmetrically arranged on one side close to the fixed plate and fixedly installed on the outer wall of the transmission plate. A U-shaped slide rail is fixedly installed on the top edge of the base mechanism. A trapezoidal heat insulation plate is penetrated and slidably installed inside the U-shaped slide rail. An arc-shaped plate is hinged at one end of the front side of the trapezoidal heat insulation plate through a torsion spring, and an arc-shaped guide block is fixedly installed on the top of the base mechanism.

[0009] The U-shaped block is connected to the upper and lower parts of the oven assembly by the spring, and the U-shaped block is connected to the upper and lower parts of the oven assembly by the spring.

[0010] According to the above technical solution, the anti-interference device also includes a limit plate, which is fixedly installed on the back side of the outer wall of the fixed plate near the side of the oven assembly. An elastic telescopic rod is fixedly installed between the bottom of the limit plate and the top of the U-shaped block. When the U-shaped block moves upward, it pushes the elastic telescopic rod to shrink inward at its fixed end. At this time, the limit plate is limited by the fixed plate and remains stationary, prompting the elastic telescopic rod to always be in a vertical posture for telescoping.

[0011] According to the above technical solution, the anti-damage device includes a resistance block, which penetrates through the inside of the resistance block and is fixedly installed on the outer wall of the telescopic end of the elastic telescopic rod, a sliding plate is installed on the back edge of the fixed plate through a spring sliding, and a plurality of arc panels are equidistantly and fixedly installed on the sliding plate close to the side of the electric threaded rod, and the arc surface of the arc panel is located on the movement trajectory of the resistance block. When the elastic telescopic rod moves upward, it drives the resistance block to move synchronously. During the upward movement of the resistance block, it will contact the arc panel to cause it to generate a force for movement. At this time, the arc panel pushes the sliding plate to move along the outer wall of the back of the fixed plate away from the electric threaded rod. When the resistance block relies on the arc surface of the arc panel for guidance and passes over the arc panel, the sliding plate drives the arc panel to reset when it is reset by the elastic force of the spring, and this process is repeated.

[0012] According to the above technical solution, the anti-damage device further includes an L-shaped pull plate. The side of the L-shaped pull plate close to the fixed plate is fixedly installed on the outer wall of the sliding plate. A rotating rod is rotatably installed on the side of the L-shaped pull plate close to the oven assembly. A circular ring is fixedly installed on the side of the oven assembly close to the L-shaped pull plate. A plurality of drying plates are fixedly installed on the outer wall of the end of the rotating rod away from the L-shaped pull plate.

[0013] According to the above technical solution, the outer wall of the rotating rod movably penetrates through the inside of the oven assembly. The inside of the circular ring penetrates and is spirally connected to the outer wall of the end of the rotating rod close to the L-shaped pull plate. The plurality of drying plates are equidistantly distributed on the outer wall of the rotating rod. During the process of the sliding plate reciprocatingly moving away from the electric screw rod and resetting, the L-shaped pull plate is driven to move synchronously. The L-shaped pull plate drives the rotating rod to move synchronously. The rotating rod reciprocates and slides horizontally inside the circular ring, and the oven assembly limits the circular ring. At this time, the circular ring drives the spirally connected rotating rod to generate a rotational force and starts to rotate itself. When the rotating rod rotates, it drives the drying plates to revolve inside the oven assembly. When the drying plates revolve, they evenly conduct and diffuse the heat generated during the start-up stage inside the oven assembly, and at the same time absorb the moisture generated when the high temperature inside the oven assembly comes into contact with the external air due to discharging during the closing stage of the oven assembly.

[0014] The present invention provides a porcelain furnace for sintering porcelain teeth used in denture processing. It has the following beneficial effects:

[0015] (1) Through the cooperation of the oven assembly, the electric screw rod, the transmission plate, the storage rack, the rack plate, the toothed groove roller, the L-shaped connecting plate, the transmission teeth, the telescopic heat preservation ring, the water-absorbing cotton ring and the vertical rod, the present invention relies on the storage rack to seal the bottom of the oven assembly, effectively preventing heat from overflowing and scalding external staff when baking dentures inside the oven assembly, while saving heat energy and improving the baking efficiency; and relying on the heat preservation and sealing of the telescopic heat preservation ring to protect the dentures baked inside itself. The relatively narrow environment inside the telescopic heat preservation ring reduces the possibility of temperature difference changes, avoiding the possibility of increasing the appearance of pores on the surface of the dentures due to local temperature differences during the process of the oven assembly heating up to the specified baking temperature. At the same time, the water-absorbing cotton ring wipes the water droplets on the outer wall of the telescopic heat preservation ring, avoiding the interference of the large amount of heat taken away when the water droplets on the outer wall of the telescopic heat preservation ring evaporate on its internal temperature balance. The temperature sensor can detect the temperature inside the furnace in real time, preventing the temperature in the furnace from not reaching the appropriate temperature or exceeding the appropriate temperature, thereby affecting the production quality of porcelain teeth.

[0016] (2) The present invention sets an anti-interference device, and cooperates with a transmission plate, a U-shaped block, a U-shaped slide rail, a trapezoidal heat insulation plate, an arc plate, an arc guide block, a limit plate and an elastic telescopic rod. In the process of the denture gradually descending after baking, the trapezoidal heat insulation plate and the arc plate gradually open the sealed environment during the resetting process, so that the external air is gradually mixed with the heat overflowing from the oven assembly to heat up, thereby preventing the denture from suddenly contacting the external cold air at high temperature, causing the temperature to drop too quickly and increase the risk of surface cracking, effectively improving the quality of the finished product and preventing the yield from decreasing; and adding physical limits and buffers while the electric threaded rod is driving, reducing slight vibrations during the operation of the equipment, so that the U-shaped block can slide more smoothly inside the U-shaped slide rail against the trapezoidal heat insulation plate, thereby preventing the friction between the trapezoidal heat insulation plate and the U-shaped slide rail from increasing and aggravating wear.

[0017] (3) The present invention sets an anti-damage device, and cooperates with the elastic telescopic rod, the resistance block, the sliding plate, the arc panel, the L-shaped pull plate, the rotating rod, the circular ring and the drying plate. When the electric threaded rod fails and causes the transmission plate and the U-shaped block and other components to fall, the arc panel is continuously limited by the resistance block during the falling process to slow down. At the same time, the vibration generated when the two are in contact is offset by the built-in spring of the elastic telescopic rod, so that the storage rack can be lowered at a safe and stable rate, avoiding the collision between the storage rack and the base mechanism and causing damage to the equipment; at the same time, the drying plate is used to achieve the internal temperature radiation balance of the oven assembly, further promoting the balanced temperature rise inside the telescopic insulation ring, thereby reducing the adverse effects on the baked dentures, and after the processing is completed, the rotation neutralizes the moisture inside the oven assembly and the telescopic insulation ring to prevent the accumulation of moisture during the next baking, which can easily cause bacteria to grow, thereby avoiding bacterial contamination of the dentures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the present invention as a whole;

[0019] Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole;

[0020] Figure 3 This is a schematic diagram of the peripheral structure of the electric threaded rod of the present invention;

[0021] Figure 4 It is a cross-sectional schematic diagram of the peripheral structure of the electric threaded rod of the present invention;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 6 It is a schematic diagram of the anti-interference device of the present invention;

[0024] Figure 7 It is a schematic diagram of the anti-interference device of the present invention from the right side perspective;

[0025] Figure 8 Schematic diagram of the anti-damage device of the present invention;

[0026] Figure 9 Cross-sectional schematic diagram of the anti-damage device of the present invention.

[0027] In the figure: 1, base mechanism; 2, fixing plate; 3, baking furnace assembly; 4, electric screw rod; 5, transmission plate; 6, storage rack; 7, rack plate; 8, toothed groove roller; 9, L-shaped connecting plate; 10, transmission tooth; 11, telescopic heat preservation ring; 12, water-absorbing cotton ring; 13, vertical rod; 14, anti-interference device; 141, U-shaped block; 142, U-shaped sliding rail; 143, trapezoidal heat insulation plate; 144, arc plate; 145, arc guide block; 146, limiting plate; 147, elastic telescopic rod; 15, anti-damage device; 151, abutting block; 152, sliding plate; 153, arc panel; 154, L-shaped pulling plate; 155, rotating rod; 156, ring; 157, drying plate. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Please refer to Figures 1 - 9 , an embodiment of the present invention is: A porcelain baking furnace for denture processing, including a base mechanism 1, a fixing plate 2 is arranged at the top edge of the base mechanism 1, a baking furnace assembly 3 is arranged on the front of the fixing plate 2, an electric screw rod 4 is arranged at the bottom of one end of the back of the base mechanism 1, a transmission plate 5 is penetrated and threadedly connected inside the electric screw rod 4, an anti-interference device 14 with a temperature equalizing function is arranged outside the transmission plate 5, an anti-damage device 15 with a speed reduction function is arranged above the anti-interference device 14, a storage rack 6 is fixedly installed at one end of the front of the transmission plate 5, a rack plate 7 is fixedly installed at the top of the transmission plate 5, a toothed groove roller 8 is rotatably installed inside one end of the back of the baking furnace assembly 3 through a fixing rod, the toothed groove roller 8 is engaged with the rack plate 7, an L-shaped connecting plate 9 is slidably installed on the back inner wall of the baking furnace assembly 3, a plurality of transmission teeth 10 are fixedly installed at equal intervals and on the side of the L-shaped connecting plate 9 close to the rack plate 7, a telescopic heat preservation ring 11 is fixedly installed at the top of the inner wall of the baking furnace assembly 3, the bottom of the baking furnace assembly 3 is fixedly connected with a heat insulation box, a temperature sensor is installed inside the heat insulation box, and the probe of the temperature sensor extends out of the heat insulation box.

[0030] A water-absorbing cotton ring 12 is slidably installed on the outer wall of the fixed end of the telescopic heat-insulating ring 11. A vertical rod 13 is fixedly installed between the bottom of one end of the back of the water-absorbing cotton ring 12 and the bottom of the inner wall of the L-shaped connecting plate 9. A through hole is provided at the bottom of the baking furnace assembly 3. The outer wall of the transmission plate 5 is slidably installed inside the fixed plate 2. The storage rack 6 is located directly below the through hole of the baking furnace assembly 3. The top of the rack plate 7 penetrates through the bottom of the baking furnace assembly 3. One end of the transmission gear 10 close to the rack plate 7 is engaged with the tooth groove roller 8. The back outer wall of the telescopic end of the telescopic heat-insulating ring 11 is fixedly connected to one end of the bottom of the L-shaped connecting plate 9 away from the rack plate 7. Through the above cooperation, the bottom of the baking furnace assembly 3 is sealed by relying on the storage rack 6, so as to effectively prevent heat from overflowing and scalding external staff when the denture is baked inside the baking furnace assembly 3, while saving heat energy and improving the baking efficiency; through the above cooperation, the denture baked inside itself is protected by relying on the heat-insulating and sealing of the telescopic heat-insulating ring 11. The relatively narrow environment inside the telescopic heat-insulating ring 11 reduces the possibility of temperature difference change, and avoids the possibility of increasing the pores on the surface of the denture due to the temperature difference in a local range during the process of the baking furnace assembly 3 heating up to the specified baking temperature. At the same time, the water-absorbing cotton ring 12 wipes the water droplets on the outer wall of the telescopic heat-insulating ring 11, avoiding the interference of the large amount of heat taken away when the water droplets on the outer wall of the telescopic heat-insulating ring 11 evaporate on its internal temperature balance.

[0031] During use, place the denture to be baked inside the storage rack 6, start the electric screw rod 4. When the electric screw rod 4 rotates, it drives the threaded connection of the transmission plate 5 to slide upward along the inside of the fixed plate 2. The transmission plate 5 drives the storage rack 6 to move upward. The storage rack 6 drives the denture to enter the inside of the baking furnace assembly 3 through the bottom through hole of the baking furnace assembly 3 for baking. When the baking is completed, the electric screw rod 4 rotates in reverse to cause the transmission plate 5 to reset. The transmission plate 5 drives the storage rack 6 to disengage from the inside of the baking furnace assembly 3. Through the above cooperation, the bottom of the baking furnace assembly 3 is sealed by relying on the storage rack 6, which effectively prevents heat from overflowing and scalding external staff when the denture is baked inside the baking furnace assembly 3. At the same time, it saves heat energy and improves the baking efficiency; when the transmission plate 5 moves upward, it drives the rack plate 7 to move synchronously. When the rack plate 7 moves upward, because it meshes with the grooved roller 8, it causes the grooved roller 8 to rotate along the outer wall of the fixed rod. At this time, the grooved roller 8 drives the transmission tooth 10 meshed at the other end to generate a downward movement force. When the transmission tooth 10 generates a downward movement force, it drives the L-shaped connecting plate 9 to slide downward along the back surface of the inner wall of the baking furnace assembly 3. The L-shaped connecting plate 9 pulls the telescopic end of the telescopic heat preservation ring 11 to extend downward. At this time, the telescopic end of the telescopic heat preservation ring 11 covers the denture that moves upward and enters the inside of the baking furnace assembly 3, forming a sealed environment for the baked denture. At the same time, when the L-shaped connecting plate 9 moves downward, it drives the vertical rod 13 to move synchronously. The vertical rod 13 pulls the water-absorbing cotton ring 12 to slide downward along the fixed end of the telescopic heat preservation ring 11. The water-absorbing cotton ring 12 wipes the water droplets generated due to the temperature difference during the start-stop stage inside the baking furnace assembly 3 on the outer wall of the telescopic heat preservation ring 11. Through the above cooperation, the denture baked inside itself is protected by relying on the heat preservation and sealing of the telescopic heat preservation ring 11. The relatively narrow environment inside the telescopic heat preservation ring 11 reduces the possibility of temperature difference changes, and avoids the possibility of pores appearing on the surface of the denture due to local temperature differences during the process of the baking furnace assembly 3 heating up to the specified baking temperature. At the same time, the water-absorbing cotton ring 12 wipes the water droplets on the outer wall of the telescopic heat preservation ring 11, avoiding the interference of the large amount of heat taken away when the water droplets on the outer wall of the telescopic heat preservation ring 11 evaporate on its internal temperature balance. The temperature sensor can detect the temperature inside the furnace in real time to prevent the temperature in the furnace from not reaching the appropriate temperature or exceeding the appropriate temperature, thereby affecting the production quality of the porcelain teeth.

[0032] Please refer to Figures 1 - 9 , on the basis of the above embodiment, in another embodiment of the present invention, an anti-interference device 14 is further included;

[0033] The anti-interference device 14 includes two U-shaped blocks 141. The two U-shaped blocks 141 are symmetrically and fixedly installed on the outer wall of the transmission plate 5 close to the fixed plate 2. A U-shaped slide rail 142 is fixedly installed at the top edge of the base mechanism 1. A trapezoidal heat insulation plate 143 is slidably installed through the U-shaped slide rail 142. One end of the front surface of the trapezoidal heat insulation plate 143 is hinged with an arc-shaped plate 144 through a torsion spring. An arc-shaped guide block 145 is fixedly installed at the top of the base mechanism 1.

[0034] A spring is provided between the top of the trapezoidal heat insulation plate 143 and the bottom of the oven assembly 3. The inclined surface of the trapezoidal heat insulation plate 143 is in contact with the outer wall of the U-shaped block 141, and the concave surface of the arc-shaped guide block 145 is in contact with the arc surface of the outer wall of the arc-shaped plate 144. Through the above cooperation, during the gradual descent after the denture baking is completed, relying on the trapezoidal heat insulation plate 143 and the arc-shaped plate 144 to gradually open the sealed environment during the reset process, so that the external air is gradually mixed and heated with the heat overflowing from the inside of the oven assembly 3, preventing the denture from suddenly contacting the external cold air at a high temperature, resulting in too rapid cooling and increasing the risk of surface cracking, effectively improving the finished product quality and preventing the reduction of the yield rate.

[0035] The anti-interference device 14 further includes a limiting plate 146. The limiting plate 146 is fixedly installed on the back of the outer wall of the fixing plate 2 near the oven assembly 3. An elastic telescopic rod 147 is fixedly installed between the bottom of the limiting plate 146 and the top of the U-shaped block 141. Through the above cooperation, while the electric threaded rod 4 is driven, physical limiting and buffering are increased, reducing the slight vibration during the operation of the equipment, making the U-shaped block 141 more smoothly slide against the trapezoidal heat insulation plate 143 inside the U-shaped slide rail 142, and preventing the friction between the trapezoidal heat insulation plate 143 and the U-shaped slide rail 142 from increasing and thus aggravating the wear.

[0036] When in use, the transmission plate 5 drives the U-shaped block 141 to move synchronously during the upward movement of the electric threaded rod 4. During the upward movement of the U-shaped block 141, it will resist the back inclined surface of the trapezoidal heat insulation plate 143. The trapezoidal heat insulation plate 143 relies on the resistance of the U-shaped block 141 to slide forward along the inside of the U-shaped slide rail 142, and the trapezoidal heat insulation plate 143 drives the arc plate 144 to move synchronously. During the forward movement of the arc plate 144, it contacts the arc guide block 145, and the resistance force causes the hinge axis of the arc plate 144 to start to rotate. With the movement of the trapezoidal heat insulation plate 143 and the guidance of the arc guide block 145, the arc plate 144 moves in an arc trajectory with the hinge axis as the axis toward the center of the rack 6. At this time, the arc plates 144 on both sides and the trapezoidal heat insulation plates 143 seal the surrounding area of the rack 6, that is, the bottom of the oven assembly 3. Through the above cooperation, during the gradual descent after the denture baking is completed, The sealed environment is gradually opened by the trapezoidal insulation plate 143 and the arc plate 144 during the resetting process, so that the external air is gradually mixed with the heat overflowing from the oven assembly 3 to heat up, preventing the denture from suddenly contacting the external cold air at high temperature, causing the temperature to drop too quickly and increase the risk of surface cracking, effectively improving the quality of the finished product and preventing the yield rate from decreasing; when the U-shaped block 141 moves upward, it will push the elastic telescopic rod 147 to shrink towards the inside of its fixed end. At this time, the limit plate 146 is limited by the fixed plate 2 to remain stationary, prompting the elastic telescopic rod 147 to always be in a vertical posture for expansion and contraction. Through the above cooperation, physical limiting and buffering are increased while the electric threaded rod 4 is driven, thereby reducing slight vibrations during equipment operation, so that the U-shaped block 141 can slide more smoothly inside the U-shaped slide rail 142 against the trapezoidal insulation plate 143, preventing the friction between the trapezoidal insulation plate 143 and the U-shaped slide rail 142 from increasing, thereby aggravating wear.

[0037] See also Figures 1 - 9 , based on the above embodiment, another embodiment of the present invention further includes an anti-damage device 15;

[0038] The anti-damage device 15 includes a resistance block 151, which penetrates through the inside of the resistance block 151 and is fixedly installed on the outer wall of the telescopic end of the elastic telescopic rod 147. A sliding plate 152 is slidably installed on the edge of the back side of the fixed plate 2 through a spring. The sliding plate 152 is equidistantly and fixedly installed on one side of the electric threaded rod 4. The arc surface of the arc panel 153 is located on the movement trajectory of the resistance block 151. Through the above cooperation, when the electric threaded rod 4 fails and causes the transmission plate 5 and the U-shaped block 141 and other components to fall, the arc panel 153 is continuously limited by the resistance block 151 during the falling process to reduce the speed. At the same time, the vibration generated when the two are in contact is offset by the built-in spring of the elastic telescopic rod 147, so that the storage rack 6 can be lowered at a safe and stable rate, avoiding the collision between the storage rack 6 and the base mechanism 1 and causing damage to the equipment.

[0039] The anti-damage device 15 further includes an L-shaped pull plate 154. The L-shaped pull plate 154 is fixedly installed on the outer wall of the sliding plate 152 near the fixed plate 2. A rotating rod 155 is rotatably installed on the L-shaped pull plate 154 near the baking furnace assembly 3. A circular ring 156 is fixedly installed on the baking furnace assembly 3 near the L-shaped pull plate 154. A plurality of drying plates 157 are fixedly installed on the outer wall of the end of the rotating rod 155 away from the L-shaped pull plate 154.

[0040] The outer wall of the rotating rod 155 movably penetrates the inside of the baking furnace assembly 3. The inside of the circular ring 156 penetrates and is helically connected to the outer wall of the end of the rotating rod 155 near the L-shaped pull plate 154. The plurality of drying plates 157 are equidistantly distributed on the outer wall of the rotating rod 155. Through the above cooperation, the temperature radiation balance inside the baking furnace assembly 3 is achieved by relying on the drying plates 157, further promoting the uniform temperature rise inside the telescopic heat preservation ring 11, thereby reducing the adverse effects on the baked dentures. Moreover, during the rotation after the processing is completed, the moisture inside the baking furnace assembly 3 and the telescopic heat preservation ring 11 is removed, preventing the easy breeding of bacteria due to the accumulation of moisture during the next baking and avoiding the contamination of the dentures by bacteria.

[0041] During use, when the elastic telescopic rod 147 moves upward, it drives the contact block 151 to move synchronously. During the upward movement of the contact block 151, it will contact the arc-shaped panel 153 and cause a force for its movement. At this time, the arc-shaped panel 153 pushes the sliding plate 152 to move away from the electric screw rod 4 along the outer wall of the back of the fixed plate 2. When the contact block 151 passes over the arc-shaped panel 153 relying on the arc surface guidance of the arc-shaped panel 153, when the sliding plate 152 is reset by the elastic force of the spring, it drives the arc-shaped panel 153 to reset. Repeating this process, through the above cooperation, when the electric screw rod 4 fails and components such as the transmission plate 5 and the U-shaped block 141 fall, during the falling process, the arc-shaped panel 153 is continuously limited by the contact block 151 to reduce the speed. At the same time, the vibration generated when the two come into contact is offset by the spring inside the elastic telescopic rod 147, so that the storage rack 6 can descend at a safe and stable speed, avoiding the collision between the storage rack 6 and the base mechanism 1 and causing damage to the equipment; during the process of the sliding plate 152 moving away from the electric screw rod 4 and resetting reciprocally, it drives the L-shaped pull plate 154 to move synchronously. The L-shaped pull plate 154 drives the rotating rod 155 to move synchronously. The rotating rod 155 slides horizontally reciprocally inside the ring 156, and the baking furnace assembly 3 limits the ring 156. At this time, the ring 156 drives the rotation of the rotation rod 155 connected by a spiral and starts to rotate itself. When the rotating rod 155 rotates, it drives the drying plate 157 to revolve inside the baking furnace assembly 3. When the drying plate 157 revolves, it evenly guides and diffuses the heat generated inside the baking furnace assembly 3 during the start-up stage. At the same time, it absorbs the moisture generated when the high temperature inside the baking furnace assembly 3 contacts the external air due to discharging during the closing stage. Through the above cooperation, relying on the drying plate 157, the temperature radiation balance inside the baking furnace assembly 3 is achieved, further promoting the uniform heating inside the telescopic heat preservation ring 11 and thus reducing the adverse impact on the baked dentures. And during the revolution after the processing is completed and the moisture inside the baking furnace assembly 3 and the telescopic heat preservation ring 11, preventing the accumulation of moisture from easily causing bacterial growth during the next baking and avoiding bacterial contamination of the dentures.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A porcelain firing furnace for denture processing, comprising a base mechanism (1), characterized in that: At the top edge of the base mechanism (1), a fixing plate (2) is provided. On the front surface of the fixing plate (2), an oven assembly (3) is provided. At the bottom of one end of the back of the base mechanism (1), an electric screw rod (4) is provided. The electric screw rod (4) penetrates and is threadedly connected with a transmission plate (5) inside. A anti-interference device (14) with a temperature equalizing function is arranged around the transmission plate (5). Above the anti-interference device (14), a anti-damage device (15) with a speed reduction function is provided. At one end of the front surface of the transmission plate (5), a storage rack (6) is fixedly installed. At the top of the transmission plate (5), a rack plate (7) is fixedly installed. Inside the back of one end of the oven assembly (3), a toothed groove roller (8) is rotatably installed through a fixing rod. The toothed groove roller (8) meshes with the rack plate (7). Inside the back wall of the oven assembly (3), an L-shaped connecting plate (9) is slidably installed. On the side of the L-shaped connecting plate (9) close to the rack plate (7), a number of transmission teeth (10) are equidistantly and fixedly installed. At the top of the inner wall of the oven assembly (3), a telescopic heat preservation ring (11) is fixedly installed. The bottom of the oven assembly (3) is fixedly connected to a heat insulation box. Inside the heat insulation box, a temperature sensor is installed. The probe of the temperature sensor extends out of the heat insulation box.

2. The porcelain furnace for sintering porcelain teeth used in denture processing according to claim 1, characterized in that: On the outer wall of the fixed end of the telescopic heat preservation ring (11), a water-absorbing cotton ring (12) is slidably installed. Between the bottom of one end of the back of the water-absorbing cotton ring (12) and the bottom of the inner wall of the L-shaped connecting plate (9), a vertical rod (13) is fixedly installed. A through hole is provided at the bottom of the oven assembly (3). The outer wall of the transmission plate (5) is slidably installed inside the fixing plate (2). The storage rack (6) is located directly below the through hole of the oven assembly (3). The top of the rack plate (7) penetrates the bottom of the oven assembly (3). One end of the transmission teeth (10) close to the rack plate (7) meshes with the toothed groove roller (8). The outer wall of the telescopic end of the telescopic heat preservation ring (11) is fixedly connected to one end of the bottom of the L-shaped connecting plate (9) away from the rack plate (7).

3. A porcelain furnace for sintering porcelain teeth used in denture processing according to claim 2, characterized in that: The anti-interference device (14) includes two U-shaped blocks (141). On the side close to the fixing plate (2), the two U-shaped blocks (141) are symmetrically and fixedly installed on the outer wall of the transmission plate (5). At the top edge of the base mechanism (1), a U-shaped slide rail (142) is fixedly installed. Inside the U-shaped slide rail (142), a trapezoidal heat insulation plate (143) is penetrated and slidably installed. At one end of the front surface of the trapezoidal heat insulation plate (143), an arc-shaped plate (144) is hinged through a torsion spring. At the top of the base mechanism (1), an arc-shaped guide block (145) is fixedly installed.

4. A porcelain furnace for sintering porcelain teeth used in denture processing according to claim 3, characterized in that: A spring is provided between the top of the trapezoidal heat insulation plate (143) and the bottom of the oven assembly (3). The inclined surface of the trapezoidal heat insulation plate (143) contacts the outer wall of the U-shaped block (141). The concave surface of the arc-shaped guide block (145) contacts the arc surface of the outer wall of the arc-shaped plate (144).

5. A porcelain firing furnace for denture processing according to claim 4, characterized in that: The anti-interference device (14) further comprises a limit plate (146), wherein the limit plate (146) is fixedly mounted on the back side of the outer wall of the fixed plate (2) close to the side of the oven assembly (3), and an elastic telescopic rod (147) is fixedly mounted between the bottom of the limit plate (146) and the top of the U-shaped block (141).

6. The porcelain furnace for sintering porcelain teeth used in denture processing according to claim 5, characterized in that: The anti-damage device (15) comprises a resistance block (151), the resistance block (151) penetrates the interior and is fixedly mounted on the outer wall of the telescopic end of the elastic telescopic rod (147), a sliding plate (152) is slidably mounted on the back edge of the fixed plate (2) via a spring, a plurality of arc panels (153) are equidistantly and fixedly mounted on one side of the sliding plate (152) close to the electric threaded rod (4), and the arc surface of the arc panel (153) is located on the movement trajectory of the resistance block (151).

7. A porcelain firing furnace for denture processing according to claim 6, characterized in that: The anti-damage device (15) further comprises an L-shaped pull plate (154), wherein the L-shaped pull plate (154) is fixedly mounted on the outer wall of the sliding plate (152) on the side close to the fixed plate (2), a rotating rod (155) is rotatably mounted on the side close to the baking oven assembly (3), a circular ring (156) is fixedly mounted on the side close to the L-shaped pull plate (154), and a plurality of drying plates (157) are fixedly mounted on the outer wall of one end of the rotating rod (155) away from the L-shaped pull plate (154).

8. A porcelain furnace for sintering porcelain teeth used in denture processing according to claim 7, characterized in that: The outer wall of the rotating rod (155) movably penetrates the interior of the oven assembly (3); the circular ring (156) penetrates the interior and is spirally connected to the outer wall of the rotating rod (155) near one end of the L-shaped pull plate (154); and a plurality of drying plates (157) are equidistantly distributed on the outer wall of the rotating rod (155).

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