Zirconium oxide denture forming device

Abstract

This application relates to the field of dental prosthesis processing technology, and provides a zirconia dental prosthesis forming apparatus, including an apparatus housing. The apparatus housing is provided with a material preparation unit, a transfer unit, a clamping unit, a cutting unit, and a discharge unit. The material preparation unit includes a material preparation box and a partitioned conveying hinge located inside the material preparation box. The top of the material preparation box is open, and the bottom of the material preparation box has a discharge port for a single dental prosthesis blank to enter. The discharge port is located at one end along the length of the material preparation box. The transfer unit includes a discharge track located below the discharge port and a spacer distributing mechanism for intercepting the dental prosthesis blanks. The spacer distributing mechanism includes a rotating disk and multiple limiting rods located on the outer circumference of the rotating disk. Adjacent limiting rods form a positioning area for positioning the dental prosthesis blank. The spacer distributing mechanism also includes a positioning component for positioning the rotating disk. Based on this, the various components inside the forming apparatus can have a good mechanical life, thereby maintaining a good mechanical life for the entire forming apparatus.

Description

Technical Field

[0001] This application relates to the field of dental prosthesis processing technology, and in particular to a zirconia dental prosthesis forming device. Background Technology

[0002] Zirconia dentures, also known as zirconia all-ceramic teeth because their internal material is zirconia ceramic, are excellent high-tech biomaterials with good biocompatibility. After being installed in the gums, they do not irritate or cause allergic reactions and can be used to replace and perform the function of missing natural teeth.

[0003] A zirconia denture forming device is a processing equipment used for automatic cutting and machining of zirconia dentures. Currently, related technologies disclose a zirconia denture forming device, including a support frame. The support frame is sequentially equipped with a material preparation mechanism, a feeding mechanism, a clamping mechanism, a cutting mechanism, and a unloading mechanism. The denture blank is placed in the material preparation mechanism, and the feeding mechanism transfers the denture blank to the clamping mechanism for clamping and fixing. Then, the cutting mechanism can cut and shape the denture blank. The cut denture blank automatically leaves the forming device through the unloading mechanism and enters the subsequent processing steps.

[0004] The material preparation mechanism includes a material preparation box fixed to the frame. The box has a vertically penetrating inlet with a circular cross-section, allowing denture blanks to be stacked vertically in sequence. Two sets of intercepting components are symmetrically positioned on the outside of the material preparation box at the bottom of the inlet. When the intercepting components activate, they clamp and fix the second denture blank from the bottom. The loading mechanism includes a bonding tray and a multi-axis drive assembly for moving and rotating the tray. The bonding tray normally rests against the lower surface of the material preparation tray, keeping the denture blanks normally inside the material preparation box. When the denture blanks need to be transferred, the intercepting components are activated, causing the bottommost denture blank to adhere to the bonding tray. The multi-axis drive assembly then transfers the denture blank to the clamping mechanism for clamping.

[0005] However, regarding the aforementioned technical solutions, when each denture blank is placed inside the preparation box, the weight of all denture blanks acts directly on the bonding plate. When a large number of denture blanks are placed, the bonding plate or the connection point between the bonding plate and the multi-axis drive assembly may deform due to long-term stress. Consequently, when multiple drive assemblies move the bonding plate to transfer the denture blanks, misalignment may occur between the denture blanks and the clamping mechanism, making it difficult for the denture blanks to be clamped smoothly by the clamping mechanism. This necessitates the replacement of the bonding plate or other deformed parts, reducing the mechanical life of the molding device. Summary of the Invention

[0006] In order to maintain a good mechanical life of the molding device, this application provides a zirconia denture molding device.

[0007] The zirconia denture forming device provided in this application adopts the following technical solution:

[0008] A zirconia denture forming device includes a device housing, which is provided with a material preparation unit, a transfer unit, a clamping unit, a cutting unit and a material discharge unit in sequence. The material preparation unit includes a material preparation box for placing denture blanks and a separating conveying mechanism for driving the denture blanks to move within the material preparation box. The top of the material preparation box is open and the bottom of the material preparation box is provided with a discharge port for a single denture blank to enter. The discharge port is located on one side of the length direction of the material preparation box.

[0009] The transfer unit includes a material feeding track fixedly mounted below the material feeding port and a spacer feeding mechanism for intercepting denture blanks. The material feeding track has a downwardly inclined section, and a clearance groove is provided at the bottom of the inclined section. The spacer feeding mechanism includes a rotating disk rotatably mounted below the inclined section and multiple limiting rods equidistantly arranged on the outer circumference of the rotating disk. The limiting rods are partially located inside the clearance groove, and a positioning area for positioning the denture blank is formed between every two adjacent limiting rods. The spacer feeding mechanism also includes a positioning component located on the outside of the rotating disk, which is used to position the rotation of the rotating disk.

[0010] By adopting the above technical solution, when processing the denture blank using the molding device of this application, multiple denture blanks are first placed in the preparation box one by one. Each denture blank is separated in sequence by the separating conveying mechanism. Controlling the action of the separating conveying mechanism can drive the denture blank to move in the preparation box. When the denture blank moves to the top of the dropping port, the denture blank falls naturally into the dropping track through the dropping port, and can be intercepted by the interval separating mechanism after entering the inclined section.

[0011] Normally, the rotating disk is positioned by the positioning component to limit its rotation. At this time, the denture blank can abut against one of the stops under its own weight. When the positioning component moves and separates from the rotating disk, the denture blank can naturally push the abutting limit rod and drive the rotating disk to rotate, thereby allowing the denture blank to enter the positioning area formed between the two limit rods. Then, the positioning component moves again to force the denture blank to continue sliding down. The denture blank can enter the clamping unit for clamping, and then be cut and processed by the cutting unit. Finally, it leaves through the discharge unit and is collected.

[0012] Throughout the entire process, when the denture blanks are located inside the preparation box, the weight of each denture blank primarily acts on the inner bottom wall of the preparation box. The inner bottom wall of the preparation box has a large and uniform stress-bearing area, minimizing the possibility of deformation. Furthermore, when each denture blank enters the inclined section of the unloading track, the unloading track can withstand the weight of the denture blanks, and only a single denture blank enters the positioning area between the two limiting rods. This significantly reduces the pressure on the limiting rods from the denture blanks, reducing the possibility of deformation under pressure. The various components inside the molding device have a good mechanical lifespan, thus ensuring the overall mechanical lifespan of the molding device.

[0013] Optionally, the separating conveying mechanism includes two sprockets rotatably mounted on the outside of the material preparation box, a chain belt wrapped around the outer periphery of the two sprockets, and a rotating component for driving the sprockets to rotate. Multiple connecting plates are equidistantly arranged on the side of the chain belt near the material preparation box. Each connecting plate is equipped with at least two sets of telescopic rods. When the connecting plate is located between the two sprockets, all the telescopic rods located on the same connecting plate are arranged vertically.

[0014] The outer side of the material preparation box is provided with a connecting groove that communicates with the interior. Each set of telescopic rods located above the sprocket passes through the connecting groove and partially enters the interior of the material preparation box. Each set of telescopic rods located below the sprocket retracts inward and abuts against the outer side of the material preparation box. A guide plate is also fixed inside the material preparation box. The guide plate is located at one end of the extension direction of the connecting groove and is used to guide the telescopic rods to retract inward and leave the connecting groove.

[0015] By adopting the above technical solution, the telescopic rods located above the sprocket can pass through the connecting groove and partially enter the preparation box in their natural extended state. The telescopic rods located on two adjacent connecting plates together form a partition area for placing the denture blanks. When each denture blank is placed inside the preparation box, it can maintain a vertically partitioned state. Then, by controlling the rotation of the rotating component to drive the sprocket and chain belt, each denture blank can be conveyed forward and smoothly moved to the top of the discharge port and into the discharge track. Subsequently, as the telescopic rods at the front end of the conveyor pass the turning position of the chain belt, they gradually abut against the guide plate and can gradually disengage from the connecting groove under the guidance of the guide plate, so as to facilitate the normal conveying of the denture blanks in the preparation box.

[0016] Optionally, the telescopic rod assembly includes a fixed rod fixed to the connecting plate and a movable rod movably inserted into the fixed rod. An elastic element connects the movable rod and the fixed rod to force the movable rod to move away from the fixed rod. A flexible sleeve is provided on the outer periphery of the movable rod.

[0017] By adopting the above technical solution, the movable rod is movably connected to the fixed rod through an elastic element. When the connecting plate moves to the position directly opposite the connecting groove, the elastic element is in a naturally extended state, at which point the movable rod can partially enter the connecting groove. When the connecting plate moves to the position directly opposite the guide plate, the movable rod abuts against the guide plate and forces the elastic element to contract inward. The elastic element always has an elastic force acting on the movable rod, allowing the movable rod to naturally enter the connecting groove when the connecting plate moves back to the position directly opposite the connecting groove. In addition, the flexible sleeve is provided to reduce wear between the denture blank and the movable rod when the denture blank is placed in the area between the movable rods, reducing the occurrence of scratches on the surface of the denture blank.

[0018] Optionally, the positioning assembly includes a swing arm, a tension spring, and an unlocking component. A fixed plate is fixed inside the device housing. One end of the swing arm is hinged to the fixed plate, and the other end of the swing arm is provided with a pawl. Multiple pawl slots are evenly distributed on the outer periphery of the rotating disk. The number of pawl slots matches the number of limit rods. The pawl slots and limit rods are spaced apart along the axial direction of the rotating disk.

[0019] A tension spring is connected between the swing arm and the fixed plate. The tension spring is used to force the pawl part to abut against the outer circumference of the rotating disk so that the pawl part is correspondingly locked in the pawl slot. The unlocking component is set on the outside of the swing arm and is used to force the swing arm to swing away from the tension spring so that the pawl part is disengaged from the pawl slot.

[0020] By adopting the above technical solution, the tension spring located between the swing arm and the fixed plate can always generate an elastic force acting on the swing arm, thereby causing the pawl at the end of the swing arm to engage with the pawl groove on the outer periphery of the rotating disk, thus positioning the rotating disk. The unlocking component is used to drive the swing arm to swing away from the tension spring around its rotational connection with the fixed plate, thereby causing the pawl to disengage from the pawl groove, so that the denture blank can push the limiting rod and drive the rotating disk to rotate under its own weight; after the rotating disk rotates to the position where the pawl is aligned with the next pawl groove, the elastic force of the tension spring forces the pawl to engage with the pawl groove again, thereby realizing the sequential transfer of the denture blanks.

[0021] Optionally, the device housing is equipped with a baffle wall, which divides the interior of the housing into an operating compartment and a processing compartment. The material preparation unit and the transfer unit are located inside the operating compartment, while the clamping unit and the cutting unit are located inside the processing compartment. The baffle wall has a through-hole on both sides, and the inclined section away from the material preparation box is always connected to the through-hole. Both the operating compartment and the processing compartment are equipped with windows and doors for opening and closing, and the bottom of the processing compartment is also equipped with a negative pressure mechanism for adsorbing dust.

[0022] By adopting the above technical solution, the interior of the device box is divided into an operating chamber and a processing chamber by a retaining wall. The loading of the denture blank is carried out in the operating chamber, while the cutting and processing of the denture blank is carried out in the processing chamber. This reduces the possibility of dust generated in the processing chamber entering the operating chamber. In addition, when the operator opens the windows and doors of the operating chamber to load the denture blank, the dust is reduced from being scattered to the outside and inhaled by the operator, thus reducing the probability of respiratory diseases.

[0023] Optionally, a sliding seat is slidably installed on the side of the retaining wall near the processing chamber. The sliding seat has an opening through both sides, and the inclination direction of the opening is the same as that of the inclined section. Under normal circumstances, the opening is offset from the connecting port. The sliding seat is also connected to a pushing component, which is used to force the sliding seat to move to the position where the opening and the connecting port are connected.

[0024] The clamping unit includes a positioning base and a lifting base. The positioning base is installed inside the machining chamber and is located on the side of the sliding seat away from the retaining wall. The lifting base is located above the positioning base, and a lifting component is connected between the lifting base and the inner wall of the machining chamber. The lifting component is used to force the lifting base to move up and down.

[0025] The positioning base is provided with a limiting groove that is directly opposite to the connecting port. The limiting groove is located on the side of the positioning base near the lifting base. The bottom wall of the limiting groove is provided with a V-shaped groove, and the side of the lifting base near the positioning base is provided with a V-shaped groove. When the lifting component moves, the V-shaped groove and the V-shaped groove together clamp and fix the denture blank.

[0026] By adopting the above technical solution, the opening of the sliding seat is normally misaligned with the connecting port, which can reduce the possibility of dust inside the processing chamber being scattered into the operating chamber through the connecting port. By controlling the movement of the pushing component, the sliding seat is moved to the position where the opening and the connecting port are connected. After passing through the interval material distribution mechanism, the denture blank passes through the connecting port and the opening along the inclined section and can enter the V-groove of the positioning base. Then, the lifting component is controlled to move the lifting base closer to the positioning base. One side wall and two side walls of the V-groove can jointly clamp the denture blank, thereby keeping the denture blank fixed so that the cutting mechanism can cut and shape the denture blank.

[0027] Optionally, the discharge unit includes a discharge track one fixedly mounted on the processing chamber and a discharge track two fixedly mounted on the operating chamber. The discharge track one is located between the positioning base and the sliding seat. The end of the discharge track one away from the positioning base is inclined downward. A flipping support mechanism is provided between the positioning base and the inner wall of the processing chamber. The flipping support mechanism is used to drive the positioning base to rotate.

[0028] The retaining wall has a through-hole 2 on both sides. One end of the discharge track 2 is directly opposite the through-hole 2, and the other end is inclined downward away from the retaining wall. The sliding seat has a through-hole 2 on both sides. When the pushing component forces the sliding seat to move to the position where the opening 1 connects with the through-hole 1, the opening 2 and the through-hole 2 are misaligned.

[0029] By adopting the above technical solution, after the denture blank is cut and shaped, the lifting component is reset to drive the lifting base to move upward. Then, the rotating support mechanism is controlled to rotate and tilt the positioning base. At this time, the denture blank can enter the discharge track one under the action of natural gravity. By controlling the movement of the pushing component to drive the sliding seat to move, the sliding seat can be moved to the position where the second opening and the second connecting opening are directly opposite. At this time, the denture blank in the discharge track one can pass through the first opening and the first connecting opening in sequence and finally enter the second discharge track, realizing the automatic unloading of the denture blank.

[0030] Optionally, the tilting support mechanism includes a support column and a telescopic component. One end of the support column is fixed to the bottom wall of the processing chamber, and the other end is hinged to the positioning base. The telescopic component is located between the retaining wall and the support column. The fixed end of the telescopic component is fixed to the bottom wall of the processing chamber, and the movable end of the telescopic component is hinged to a connecting block, which is slidably connected to the positioning base. The movable end of the telescopic component is in the normally extended state, at which time the positioning base is horizontally positioned.

[0031] By adopting the above technical solution, when the telescopic component is in its normally extended state, the positioning base is horizontally positioned. When the denture blank enters the positioning base, it can stay inside the V-groove, which facilitates clamping and limiting the denture blank. After the denture blank is cut, the movable end of the telescopic component is controlled to retract inward. The connecting block at the end of the telescopic component slides a certain distance relative to the positioning base, causing the positioning base to rotate downward around its hinge with the support column, so that the side of the positioning base closest to the retaining wall is flipped downward. At this time, the V-groove is tilted, and the denture blank can fall naturally and enter the discharge track for automatic unloading of the denture blank.

[0032] The telescopic components and support columns of the flipping support mechanism of this application can both support the positioning base, thereby reducing the possibility of deformation of the positioning base when the positioning base and the lifting base jointly clamp and fix the denture blank and perform cutting processing on the denture blank, and also helping to maintain a good mechanical life of the forming device.

[0033] Optionally, the bottom of the discharge track 2 is partially provided with a clearance groove 2. The unlocking components include a swing plate and a connecting rod. The swing plate is matched and set inside the clearance groove 2. The side of the swing plate near the retaining wall is hinged to the inner wall of the clearance groove 2, while the connecting rod is rotatably connected to the free side of the swing plate. The end of the connecting rod away from the swing plate is hinged to the swing arm. The virtual line between the hinge point of the swing plate and the hinge point of the swing arm is set parallel to the connecting rod. The distance between the hinge point of the swing plate and the hinge point of the swing arm matches the axial length of the connecting rod.

[0034] By adopting the above technical solution, the finished denture blank leaves the processing chamber and enters the second discharge track, where it naturally slides down the inclined track. As the blank slides down, it passes over the top of the swing plate, forcing the plate to rotate downwards, which in turn moves the connecting rod downwards. At this time, the end of the connecting rod away from the swing plate drives the swing arm to swing downwards, thus forcing the pawl to smoothly disengage from the pawl slot. This design enables the automatic opening and closing of the positioning component during the blank's unloading process. Furthermore, after the blank is cut, the front-end spacer automatically transports the blank to the cutting unit for further cutting, offering advantages of intelligence and convenience.

[0035] Optionally, the pushing component is configured as a double-stroke cylinder. When the double-stroke cylinder is in the initial state, opening one and connecting port one are misaligned, and opening two and connecting port two are misaligned. In the first use state, opening one and connecting port one are connected, while in the second use state, opening two and connecting port two are connected. A dustproof plate is fixed inside the processing chamber. In the initial state, the dustproof plate covers both connecting port one and connecting port two.

[0036] By adopting the above technical solution, the dual-stroke cylinder configuration allows the pushing component to have three operating states, which facilitates pushing the sliding seat to stop in a state where opening one is connected to connecting port one, opening two is connected to connecting port two, or each opening and each connecting port is misaligned; and when each opening and each connecting port is misaligned, the dustproof plate covers both connecting port one and connecting port two, which can reduce the entry of dust into connecting port one and connecting port two, and further reduce the possibility of dust entering the operating chamber when opening one is connected to connecting port one and opening two is connected to connecting port two.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. When the denture blanks are placed in the preparation box, the weight of each denture blank mainly acts on the bottom wall of the preparation box, and the possibility of deformation of the preparation box is small. Moreover, after the denture blanks enter the dropping track, only a single denture blank enters the positioning area between the two limiting rods, which helps to reduce the possibility of deformation of the limiting rods under pressure, thereby maintaining a good mechanical life of the entire molding device.

[0039] 2. The internal structure of the device is divided into an operating chamber and a processing chamber by a retaining wall. The loading of the denture blank is carried out in the operating chamber, while the cutting and processing of the denture blank is carried out in the processing chamber. When the operator opens the window of the operating chamber to carry out the loading operation, the dust can be reduced from being scattered to the outside and inhaled by the operator, thus reducing the probability of respiratory diseases.

[0040] 3. By setting up a swing plate, after the cut denture blank enters the second discharge track, the swing plate can be forced to rotate downwards, and then the connecting rod drives the swing arm to swing downwards, forcing the pawl part to smoothly disengage from the pawl slot. This realizes the automatic opening and closing of the positioning component when the denture blank is unloaded, which has the advantages of intelligence and convenience. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0042] Figure 2 This is a partial sectional view of the device housing in this embodiment, mainly showing the structure of the retaining wall;

[0043] Figure 3 This is a schematic diagram of the material preparation unit in this embodiment;

[0044] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0045] Figure 5 This is a schematic diagram of the connecting piece and telescopic rod assembly in this embodiment;

[0046] Figure 6 This is a partial sectional view of the device housing in this embodiment, mainly showing the structure of the material drop track and the second material unloading track;

[0047] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0048] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0049] Figure 9 yes Figure 6 Enlarged view of point D in the middle;

[0050] Figure 10 This is a schematic diagram showing the connection relationship between the swing arm, the swing plate, and the connecting rod in this embodiment;

[0051] Figure 11 This is a schematic diagram of the structure of the processing compartment after the dustproof panel has been removed in this embodiment;

[0052] Figure 12 This is a schematic diagram of the structure after the dustproof plate is installed in the processing compartment in this embodiment;

[0053] Figure 13 This is a schematic diagram of the processing compartment on the side away from the window and door in this embodiment, mainly showing the structure of the clamping unit.

[0054] Explanation of reference numerals in the attached drawings: 1. Device housing; 11. Fixing plate; 12. Retaining wall; 121. Connecting port one; 122. Connecting port two; 123. Dustproof plate; 13. Operating chamber; 14. Processing chamber; 15. Sliding seat; 151. Pushing component; 152. Opening one; 153. Opening two; 16. Window / door; 17. Negative pressure mechanism; 18. Mounting plate;

[0055] 2. Material preparation unit; 21. Material preparation box; 211. Material discharge port; 212. Connecting trough; 22. Separating conveyor mechanism; 221. Sprocket; 222. Chain belt; 223. Rotating component; 224. Connecting piece; 23. Telescopic rod assembly; 231. Fixed rod; 232. Movable rod; 233. Elastic element; 24. Guide plate; 25. Support;

[0056] 3. Transfer unit; 31. Unloading track; 311. Inclined section; 312. Straight section; 313. Clearance groove one; 32. Interval material distribution mechanism; 321. Rotary disk; 322. Limiting rod; 323. Pawl slot; 33. Positioning component; 331. Swing arm; 3311. Pawl part; 332. Tension spring; 333. Unlocking component; 334. Swing plate; 335. Connecting rod;

[0057] 4. Clamping unit; 41. Positioning base; 411. Limiting groove; 412. V-groove one; 413. Sliding rail; 42. Lifting base; 421. V-groove two; 43. Lifting component; 44. Tilting support mechanism; 441. Support column; 442. Telescopic component; 5. Cutting unit; 6. Discharge unit; 61. Discharge rail one; 62. Discharge rail two; 621. Clearance groove two. Detailed Implementation

[0058] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0059] This application discloses a zirconia denture forming apparatus.

[0060] Reference Figure 1 A zirconia denture forming apparatus includes an apparatus housing 1. Inside the apparatus housing 1, arranged sequentially according to the processing order of the denture blank, are a material preparation unit 2, a transfer unit 3, a clamping unit 4, a cutting unit 5, and a material unloading unit 6. The apparatus housing 1 is equipped with a baffle wall 12, which divides the apparatus housing 1 into an operating chamber 13 and a processing chamber 14. (See also...) Figure 2The side of the retaining wall 12 is provided with a first connection port 121 and a second connection port 122, which enable the operating cabin 13 and the processing cabin 14 to communicate with each other; in this embodiment, the second connection port 122 is located below the first connection port 121.

[0061] The material preparation unit 2 and the transfer unit 3 are located inside the operating chamber 13, and are used for loading and transferring the denture blanks, respectively. The clamping unit 4 and the cutting unit 5 are located inside the processing chamber 14, and are used for clamping and fixing the denture blanks and for cutting and processing, respectively. Both the outer side of the operating chamber 13 and the outer side of the processing chamber 14 are provided with openable and closable windows 16, which can be made of transparent acrylic sheet material, so that the operators can observe the situation inside the operating chamber 13 and the processing chamber 14. In addition, the top of the operating chamber 13 is also provided with a window 16, so that the operators can place the denture blanks into the material preparation unit 2.

[0062] Among them, reference Figure 3 The material preparation unit 2 includes a material preparation box 21, a separating conveying mechanism 22, and a support 25. The support 25 is fixed to the inner side wall of the operating chamber 13, while the material preparation box 21 is fixed to the top of the support 25. The top of the material preparation box 21 is open to facilitate the placement of the denture blank inside the material preparation box 21. The bottom of the material preparation box 21 is provided with a discharge port 211 for a single denture blank to pass through. The length of the discharge port 211 is greater than the outer diameter of the denture blank, and the discharge port 211 is located on one side of the length direction of the material preparation box 21.

[0063] Reference Figure 4 A mounting plate 18 is fixed on the upper surface of the bracket 25, and the mounting plate 18 is located outside the material preparation box 21. The separating conveying mechanism 22 includes two sprockets 221 rotatably connected to the mounting plate 18, a chain belt 222 wrapped around the outer periphery of the two sprockets 221, and a rotating component 223 for driving rotation. The two sprockets 221 are respectively facing the two ends of the material preparation box 21 along its length. The rotating component 223 is a rotary motor. The rotating component 223 is fixed to the side of the mounting plate 18 away from the material preparation box 21. The output shaft of the rotating component 223 is fixedly connected to one of the sprockets 221. By controlling the operation of the rotating component 223, the sprocket 221 can be driven to rotate and the chain belt 222 can be driven to move.

[0064] Multiple connecting pieces 224 are fixed to the side of the chain belt 222 near the material storage box 21. All connecting pieces 224 are equidistantly arranged along the extension direction of the chain belt 222. Each connecting piece 224 is equipped with at least two sets of telescopic rod groups 23 near the material storage box 21. In this embodiment, the number of telescopic rod groups 23 is specifically two. In other feasible embodiments, the number of telescopic rod groups 23 can also be three, four, or five, and is not limited to the number used in this embodiment. When the connecting piece 224 moves between the two sprockets 221, all the telescopic rod groups 23 located on the same connecting piece 224 are arranged vertically.

[0065] Specific reference Figure 5 The telescopic rod assembly 23 includes a fixed rod 231, a movable rod 232, and an elastic element 233. One end of the fixed rod 231 is fixed to the connecting piece 224, and the other end is provided with a slot. The movable rod 232 is movably inserted into the slot. The elastic element 233 is a compression spring. One end of the elastic element 233 is connected to the inner end wall of the slot, and the other end of the elastic element 233 is connected to the movable rod 232. The elastic element 233 always generates an elastic force acting on the movable rod 232 to force the movable rod 232 to move away from the fixed rod 231, thereby causing the movable rod 232 to be partially exposed outside the slot.

[0066] Simultaneously refer to Figure 4 The side of the material preparation box 21 near the mounting plate 18 has a connecting groove 212, which is connected to the interior of the material preparation box 21. Each movable rod 232 located above the sprocket 221, under the elastic force of the corresponding elastic element 233, can pass through the connecting groove 212 and be partially located inside the material preparation box 21. At this time, all the movable rods 232 on the two adjacent connecting pieces 224 together form a partition area for placing the denture blanks. Each denture blank can be vertically placed in its respective partition area for storage and transport. In addition, a flexible sleeve (not shown in the figure) is fitted on the outer periphery of each movable rod 232. The flexible sleeve is a polyurethane rubber pad, which can reduce the collision and wear between the denture blank and the movable rod 232, and reduce the generation of scratches on the surface of the denture blank.

[0067] A guide plate 24 is provided inside the material preparation box 21, and the guide plate 24 is located above the material drop port 211. One side edge of the guide plate 24 is fixed to one side end wall of the connecting groove 212, and the other side edge of the guide plate 24 extends inward into the material preparation box 21. During the operation of the rotating component 223, which drives the chain belt 222 to move, the movable rod 232 located above the sprocket 221 can abut against the guide plate 24 and gradually move away from the connecting groove 212 along the guide plate 24 to ensure the normal transport of the denture blank in the material preparation box 21.

[0068] Reference Figure 6The transfer unit 3 includes a material feeding track 31 and a spacer-type material distribution mechanism 32 for intercepting denture blanks. The material feeding track 31 is fixedly installed inside the operating chamber 13. The material feeding track 31 includes a straight section 312 located directly below the material feeding port 211 and an inclined section 311 integrally formed below the straight section 312. The end of the inclined section 311 away from the straight section 312 is directly connected to the connecting port 121. After passing through the material feeding port 211, the denture blank can enter the processing chamber 14 for processing in sequence via the straight section 312 and the inclined section 311. In addition, the side of the straight section 312 near the window 16 and the side of the inclined section 311 near the window 16 are both made of transparent acrylic sheets to facilitate observation of the inside of the material feeding track 31.

[0069] Reference Figure 7 The interval material distribution mechanism 32 includes a rotating disk 321, a limiting rod 322, and a positioning component 33. A fixing plate 11 is fixed to the inner side wall of the retaining wall 12. The rotating disk 321 is rotatably connected to the fixing plate 11 and is located below the inclined section 311. There are multiple limiting rods 322. All limiting rods 322 are equidistantly arranged on the outer periphery of the rotating disk 321. Each pair of adjacent limiting rods 322 can jointly form a positioning area for positioning the denture blank.

[0070] The bottom of the inclined section 311 is partially provided with a clearance groove 313. When the rotating disk 321 rotates, each limiting rod 322 can sequentially and partially enter the clearance groove 313, and a single denture blank is locked inside the positioning area. This allows the denture blanks to be stacked sequentially in the feeding track 31 and conveyed forward one by one. In this embodiment, the specific number of limiting rods 322 is set to 4; however, in other feasible embodiments, the number of limiting rods 322 can also be 3, 5, or 6, which can be selectively set according to actual needs.

[0071] The positioning component 33 is used to position the rotation of the rotating disk 321. The positioning component 33 includes a swing arm 331, a tension spring 332, and an unlocking component 333. One end of the swing arm 331 is hinged to the fixed plate 11, and the other end of the swing arm 331 is provided with an integrally formed pawl portion 3311. The pawl portion 3311 is always located below the rotating disk. Multiple pawl slots 323 are equidistantly arranged on the outer periphery of the rotating disk 321. The number of pawl slots 323 is equal to the number of limiting rods 322. The pawl slots 323 and the limiting rods 322 are staggered along the axial direction of the rotating disk 321 to reduce interference between the limiting rods 322 and the swing arm 331.

[0072] One end of the tension spring 332 is hooked and fixed to the fixed plate 11, and the other end of the tension spring 332 is connected to the swing arm 331. The connection position between the tension spring 332 and the swing arm 331 is located in the middle section of the extension direction of the swing arm 331. The tension spring 332 is always located above the swing arm 331, and can always generate an elastic force acting on the swing arm 331 and force the pawl part 3311 to be normally locked in the pawl groove 323, so as to fix the rotation position of the rotating disk 321. The unlocking component 333 is located between the swing arm 331 and the discharge unit 6, and is used to force the swing arm 331 to swing and drive the pawl part 3311 to disengage from the pawl groove 323.

[0073] Back Figure 6 The discharge unit 6 includes discharge track one 61 and discharge track two 62. Discharge track one 61 is mounted on the bottom wall of the processing chamber 14, while discharge track two 62 is mounted on the bottom wall of the operating chamber 13. (Refer to...) Figure 9 One end of the discharge track 2 62 is directly connected to the connecting port 2 122, and the other end of the discharge track 2 62 is inclined downward away from the retaining wall 12. The bottom of the discharge track 2 62 is partially provided with a relief groove 2 621. The unlocking component 333 includes a swing plate 334 and a connecting rod 335. The swing plate 334 is set in the relief groove, and the side end of the swing plate 334 near the retaining wall 12 is hinged to the inner wall of the relief groove 2 621. One end of the connecting rod 335 is rotatably connected to the free side of the swing plate 334, and the other end of the connecting rod 335 is hinged to the swing arm 331.

[0074] Simultaneously refer to Figure 10 In this embodiment, the virtual connection between the hinge point of the swing plate 334 and the hinge point of the swing arm 331 is parallel to the connecting rod 335. The distance between the hinge point of the swing plate 334 and the hinge point of the swing arm 331 is equal to the axial length of the connecting rod 335. That is, the swing arm 331, the connecting rod 335, the swing plate 334, and the virtual connection between the hinge point of the swing plate 334 and the hinge point of the swing arm 331 form a parallelogram structure. When the denture blank enters the feeding track and abuts against the swing plate 334, the connecting rod 335 can automatically force the swing arm 331 to swing downward, so that the pawl part 3311 automatically disengages from the ratchet slot, thereby realizing the automatic transport of the denture blank.

[0075] Reference Figure 11 A sliding seat 15 is slidably installed on the side of the retaining wall 12 near the processing chamber 14. The moving direction of the sliding seat 15 is parallel to the horizontal direction. A pushing component 151 for forcing the sliding seat 15 to move is also connected to the side of the sliding seat 15. In this embodiment, the pushing component 151 is a double-stroke cylinder. The sliding seat 15 has an opening 152 and an opening 153 that pass through both sides. The opening 153 is located below the opening 152. The tilting direction of the opening 152 is the same as the tilting direction of the tilting section 311, and the tilting direction of the opening 153 is the same as the tilting direction of the unloading track 2.

[0076] When the pushing component 151 is in its initial state, opening one 152 and connecting port one 121 are misaligned and not connected to each other, and opening two 153 and connecting port two 122 are also misaligned and not connected to each other. By controlling the movement of the pushing component 151 to enter the first usage state, the sliding seat 15 can be forced to move to the position where opening one 152 and connecting port one 121 are connected. Secondly, by controlling the movement of the pushing component 151 to enter the second usage state, the sliding seat 15 can be forced to move to the position where opening two 153 and connecting port two 122 are connected. Additionally, refer to... Figure 12 The machining chamber 14 is also equipped with a dustproof plate 123, which is attached to the side of the sliding seat 15 away from the retaining wall 12. When the pushing component 151 is in the initial state, the dustproof plate 123 can cover both the first connecting port 121 and the second connecting port 122 at the same time to reduce the entry of dust generated by cutting in the machining chamber 14 into the first opening 152 or the second opening 153.

[0077] Back Figure 11 The clamping unit 4 includes a positioning base 41, a lifting base 42, a lifting component 43, and a flipping support mechanism 44. The positioning base 41 is fixedly mounted on the bottom wall of the processing chamber 14 via the flipping support mechanism 44. The positioning base 41 is located on the side of the sliding seat 15 away from the retaining wall 12. A limiting groove 411 is provided on the upper surface of the positioning base 41. The limiting groove 411 is always directly opposite the connecting opening 121. When the sliding seat 15 moves to the position where the opening 152 connects with the connecting opening 121, the denture blank can fall into the limiting groove 411 through the connecting opening 121 and the opening 152. (Refer to...) Figure 13 The bottom wall of the limiting groove 411 is also provided with a V-shaped groove 412.

[0078] The lifting component 43 is a telescopic cylinder. The cylinder body of the lifting component 43 is fixed inside the processing chamber 14, and the lifting base 42 is fixedly connected to the movable end of the lifting component 43. The movable end of the lifting component 43 is normally in the extended state, at which time there is a gap between the positioning base 41 and the lifting base 42 for the denture blank to enter. In addition, the lower surface of the lifting base 42 has a second V-groove 421. When the lifting component 43 moves to force the lifting base 42 to move closer to the positioning base 41, the first V-groove 412 and the second V-groove 421 can jointly clamp and fix the denture blank, so that the cutting unit 5 can perform cutting processing on the denture blank. (Refer to...) Figure 11 The cutting unit 5 is located outside the clamping unit 4. In this embodiment, the structure of the cutting unit 5 is the prior art, and will not be described in detail here.

[0079] Additionally, refer to Figure 13The tilting support mechanism 44 includes a support column 441 and a telescopic component 442. One end of the support column 441 is fixed to the bottom wall of the processing chamber 14, and the other end is hinged to the lower surface of the positioning base 41. The telescopic component 442 is also a telescopic cylinder. The cylinder body of the telescopic component 442 is fixed to the bottom wall of the processing chamber 14, and the telescopic component 442 is located between the support column 441 and the retaining wall 12. A connecting block is hinged to the movable end of the telescopic component 442, and a sliding rail 413 is provided at the bottom of the positioning base 41. The connecting block is slidably disposed inside the sliding rail 413. In this embodiment, the movable end of the telescopic component 442 is in the normally extended state, at which time the positioning base 41 is horizontally positioned. When the movable end of the telescopic component 442 retracts inward, it can drive the positioning base 41 to rotate downward and tilt.

[0080] The material drop track 31 is located between the sliding seat 15 and the positioning base 41. One end of the material drop track 31 is directly connected to the connecting port 122, and the inclination direction of the material drop track 31 is the same as that of the material drop track 31. The end of the material drop track 31 away from the retaining wall 12 is directly connected to the positioning base 41. After the denture blank is cut, the movable end of the telescopic component 442 is retracted inward, and the positioning base 41 is rotated downward and tilted, so that the denture blank can smoothly enter the material drop track 31. Then, when the sliding seat 15 is moved to the position where the opening 153 and the connecting port 122 are connected, the denture blank can smoothly leave the processing chamber 14 through the opening 153 and the connecting port 122 and fall into the operating chamber 13 for collection along the material drop track 31.

[0081] Back Figure 1 The processing chamber 14 is also equipped with a negative pressure mechanism 17 for adsorbing the dust generated during cutting. The specific structure of the negative pressure mechanism 17 is existing technology and will not be described in detail here. In addition, a blower mechanism (not shown in the figure) is fixed on the side of the sliding seat 15 away from the baffle wall 12. The air outlet of the blower mechanism is directly opposite the material drop track 31 and is used to blow away the dust adhering to the surface of the denture blank after cutting, so as to improve the cleanliness of the denture blank entering the operating chamber 13. The specific structure of the blower mechanism is also existing technology and will not be described in detail here.

[0082] The implementation principle of the zirconia denture forming device in this application embodiment is as follows:

[0083] When processing the denture blanks, first open the window 16 of the operating chamber 13 and place each denture blank into the material preparation box 21. Each denture blank is separated by each movable rod 232. Control the rotation of the rotating component 223 to drive the sprocket 221 to rotate, which can make the chain move, and then push each denture blank to move through the movable rod 232. When each denture blank passes above the drop port 211 in sequence, it can fall freely into the drop track 31 and be intercepted by the interval distribution mechanism 32 at the bottom of the drop track 31. The falling denture blank first abuts against the limiting rod 322. The swing arm 331 is rotated manually or by program control, and the pawl part 3311 disengages from the ratchet chuck. The denture blank can push the rotating disk 321 to rotate under the action of gravity, and then enter the limiting groove 411 of the positioning base 41 through the connecting port 121 and the opening 152. By controlling the action of the lifting component 43, the lifting base 42 and the positioning base 41 can jointly clamp and fix the denture blank. Then, the cutting unit 5 can cut the denture blank.

[0084] After the denture blank is cut and processed, the telescopic component 442 is controlled to rotate and tilt the positioning base 41 downwards, allowing the denture blank to enter the first feeding track. Then, it can smoothly enter the second feeding track through the second opening 153 and the second connecting opening 122. At this time, when the denture blank passes the swing plate 334, it can force the swing plate 334 to swing downwards, and then drive the swing arm 331 to rotate downwards through the connecting rod 335, so that the pawl part 3311 disengages from the ratchet chuck again. Thus, the conveying of the interval branching mechanism can be automatically controlled after the denture blank is cut, which has the advantages of automation and intelligence.

[0085] In addition, during the entire use process, when the denture blanks are located inside the material preparation box 21, the weight of each denture blank mainly acts on the inner bottom wall of the material preparation box 21. The inner bottom wall of the material preparation box 21 has a large force-bearing area and uniform force distribution, and the possibility of deformation is small. When each denture blank enters the inclined section 311 of the material dropping track 31, the material dropping track 31 can withstand the weight of the denture blanks. Moreover, only a single denture blank enters the positioning area between the two limiting rods 322, which can greatly reduce the pressure on the limiting rods 322 from the denture blanks, reduce the possibility of the limiting rods 322 being deformed by pressure, and thus enable the entire molding device to maintain a good mechanical life.

[0086] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A zirconia denture forming device, comprising a device housing (1), wherein the device housing (1) is sequentially provided with a material preparation unit (2), a transfer unit (3), a clamping unit (4), a cutting unit (5), and a material discharge unit (6); characterized in that: The material preparation unit (2) includes a material preparation box (21) for placing denture blanks and a separating conveying mechanism (22) for driving denture blanks to move within the material preparation box (21). The top of the material preparation box (21) is open, and the bottom of the material preparation box (21) is provided with a discharge port (211) for a single denture blank to enter. The discharge port (211) is located on one side of the length direction of the material preparation box (21). The transfer unit (3) includes a material drop track (31) fixedly mounted below the material drop port (211) and an interval distribution mechanism (32) for intercepting the denture blank. The material drop track (31) has a downwardly inclined section (311), and the bottom of the inclined section (311) is partially provided with a relief groove (313). The interval distribution mechanism (32) includes a rotating disk (321) rotatably mounted below the inclined section (311) and multiple limiting rods (322) equidistantly mounted on the outer circumference of the rotating disk (321). The limiting rods (322) are partially located inside the relief groove (313), and each pair of adjacent limiting rods (322) together form a positioning area for positioning the denture blank. The interval distribution mechanism (32) also includes a positioning component (33) located on the outside of the rotating disk (321). The positioning component (33) is used to position the rotation of the rotating disk (321). The separating conveying mechanism (22) includes two sprockets (221) rotatably disposed on the outside of the material preparation box (21), a chain belt (222) wrapped around the outer periphery of the two sprockets (221), and a rotating component (223) for driving the sprockets (221) to rotate. The chain belt (222) is provided with multiple connecting pieces (224) at equal intervals on the side of the material preparation box (21) near the material preparation box. Each connecting piece (224) is equipped with at least two sets of telescopic rods (23). When the connecting piece (224) is located between the two sprockets (221), all the telescopic rods (23) located on the same connecting piece (224) are arranged vertically. The outer side of the material preparation box (21) is provided with a communicating groove (212) that communicates with the interior. Each set of telescopic rods (23) located above the sprocket (221) passes through the communicating groove (212) and partially enters the interior of the material preparation box (21). Each set of telescopic rods (23) located below the sprocket (221) retracts inward and abuts against the outer side of the material preparation box (21). A guide plate (24) is also fixed inside the material preparation box (21). The guide plate (24) is located at one end of the extension direction of the communicating groove (212) and is used to guide the telescopic rods (23) to retract inward and leave the communicating groove (212). The telescopic rod assembly (23) includes a fixed rod (231) fixed to the connecting piece (224) and a movable rod (232) movably inserted into the fixed rod (231). An elastic element (233) is connected between the movable rod (232) and the fixed rod (231) to force the movable rod (232) to move away from the fixed rod (231). A flexible pad is provided on the outer periphery of the movable rod (232). The positioning component (33) includes a swing arm (331), a tension spring (332), and an unlocking component (333). A fixing plate (11) is fixed inside the device housing (1). One end of the swing arm (331) is hinged to the fixing plate (11), and the other end of the swing arm (331) is provided with a pawl (3311). Multiple pawl slots (323) are equidistantly arranged on the outer periphery of the rotating disk (321). The number of pawl slots (323) matches the number of limiting rods (322). The pawl slots (323) and the limiting rods (322) are spaced apart along the axial direction of the rotating disk (321). The tension spring (332) is connected between the swing arm (331) and the fixed plate (11). The tension spring (332) is used to force the pawl part (3311) to abut against the outer peripheral surface of the rotating disk (321) so that the pawl part (3311) is correspondingly engaged in the pawl groove (323). The unlocking member (333) is provided on the outside of the swing arm (331) and is used to force the swing arm (331) to swing away from the tension spring (332) so that the pawl part (3311) can disengage from the pawl groove (323). The device housing (1) is equipped with a baffle wall (12) inside. The device housing (1) is divided into an operating chamber (13) and a processing chamber (14) by the baffle wall (12). The material preparation unit (2) and the transfer unit (3) are located inside the operating chamber (13). The clamping unit (4) and the cutting unit (5) are located inside the processing chamber (14). The baffle wall (12) has a through-hole (121) on both sides. The end of the inclined section (311) away from the material preparation box (21) is always connected to the through-hole (121). Both the operating chamber (13) and the processing chamber (14) are equipped with windows (16) for opening and closing. The bottom of the processing chamber (14) is also equipped with a negative pressure mechanism (17) for adsorbing dust. The retaining wall (12) is slidably mounted on the side near the processing chamber (14) with a sliding seat (15). The sliding seat (15) has an opening (152) that runs through both sides. The inclination direction of the opening (152) is the same as that of the inclined section (311). The opening (152) is normally offset from the connecting port (121). The sliding seat (15) is also connected to a pushing component (151). The pushing component (151) is used to force the sliding seat (15) to move to the position where the opening (152) and the connecting port (121) are connected. The discharge unit (6) includes a discharge track 1 (61) fixedly mounted on the processing chamber (14) and a discharge track 2 (62) fixedly mounted on the operation chamber (13); the baffle wall (12) has a connecting port 2 (122) that runs through both sides, one end of the discharge track 2 (62) is directly opposite the connecting port 2 (122), and the other end is inclined downward in a direction away from the baffle wall (12); The bottom of the discharge track 2 (62) is partially provided with a relief groove 2 (621). The unlocking component (333) includes a swing plate (334) and a connecting rod (335). The swing plate (334) is matched and disposed inside the relief groove 2 (621). The side end of the swing plate (334) near the retaining wall (12) is hinged to the inner wall of the relief groove 2 (621), while the connecting rod (335) is rotatably connected to the free side of the swing plate (334). The end of the connecting rod (335) away from the swing plate (334) is hinged to the swing arm (331). The virtual line connecting the hinge point of the swing plate (334) and the hinge point of the swing arm (331) is parallel to the connecting rod (335). The distance between the hinge point of the swing plate (334) and the hinge point of the swing arm (331) matches the axial length of the connecting rod (335).

2. The zirconia denture forming apparatus according to claim 1, characterized in that: The clamping unit (4) includes a positioning base (41) and a lifting base (42). The positioning base (41) is mounted inside the processing chamber (14) and is located on the side of the sliding seat (15) away from the retaining wall (12). The lifting base (42) is located above the positioning base (41). A lifting component (43) is connected between the lifting base (42) and the inner wall of the processing chamber (14). The lifting component (43) is used to force the lifting base (42) to move up and down. The positioning base (41) is provided with a limiting groove (411) that is directly opposite to the first connecting port (121). The limiting groove (411) is located on the side of the positioning base (41) near the lifting base (42). The bottom wall of the limiting groove (411) is provided with a V-shaped groove (412). The side of the lifting base (42) near the positioning base (41) is provided with a V-shaped groove (421). When the lifting component (43) moves, the V-shaped groove (412) and the V-shaped groove (421) together clamp and fix the denture blank.

3. The zirconia denture forming apparatus according to claim 2, characterized in that: The discharge track (61) is located between the positioning base (41) and the sliding seat (15). The end of the discharge track (61) away from the positioning base (41) is inclined downward. A flip support mechanism (44) is provided between the positioning base (41) and the inner wall of the processing chamber (14). The flip support mechanism (44) is used to drive the positioning base (41) to rotate. The sliding seat (15) is provided with two through openings (153). When the pushing component (151) forces the sliding seat (15) to move to the position where the opening (152) connects with the connecting port (121), the opening (153) and the connecting port (122) are misaligned.

4. The zirconia denture forming apparatus according to claim 3, characterized in that: The flipping support mechanism (44) includes a support column (441) and a telescopic component (442). One end of the support column (441) is fixed to the bottom wall of the processing chamber (14), and the other end is hinged to the positioning base (41). The telescopic component (442) is located between the retaining wall (12) and the support column (441). The fixed end of the telescopic component (442) is fixed to the bottom wall of the processing chamber (14), and the movable end of the telescopic component (442) is hinged to a connecting block. The connecting block is slidably connected to the positioning base (41). The movable end of the telescopic component (442) is in a normally extended state, at which time the positioning base (41) is horizontally positioned.

5. The zirconia denture forming apparatus according to claim 4, characterized in that: The pushing component (151) is a double-stroke cylinder. When the double-stroke cylinder is in the initial state, the first opening (152) and the first connecting port (121) are misaligned, and the second opening (153) and the second connecting port (122) are misaligned. In the first use state, the first opening (152) and the first connecting port (121) are connected. In the second use state, the second opening (153) and the second connecting port (122) are connected. A dustproof plate (123) is fixed inside the processing chamber (14). In the initial state, the dustproof plate (123) covers both the first connecting port (121) and the second connecting port (122).

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