A precision positioning device for a plaster mold for a denture

Abstract

The utility model discloses a kind of precision positioning device of plaster model for false tooth making, it is related to false tooth making technical field, including workbench, the upper surface of workbench is fixedly connected with two second protective shell, the outer surface of each second protective shell is equipped with first servo motor. The utility model drives first screw rod to rotate through first servo motor, and then drive first sliding block to move along preset direction, greatly reduce the precision fluctuation caused by artificial intervention, simultaneously cooperate first electric telescopic link drive first protective shell to be close to plaster model, subsequently second servo motor drives first two-way screw rod to rotate, and then drive the first clamping plate on two second sliding blocks synchronous to the side of plaster model move, cooperate the clamping assembly of same structure on the other side, so that clamping force is evenly distributed on both sides of plaster model, this clamping mode can effectively avoid that plaster model appears to incline displacement in the process of positioning due to uneven stress, further guarantee the positioning accuracy of plaster model horizontal direction.

Description

Technical Field

[0001] This utility model relates to the field of denture manufacturing technology, and in particular to a precise positioning device for plaster molds used in denture manufacturing. Background Technology

[0002] Plaster models are an indispensable tool in the denture fabrication process. They are positive models of oral tissues made by pouring plaster material into an impression, providing a precise basis for denture fabrication. In the field of dental restoration, plaster models are mainly divided into working models and diagnostic models. Working models are positive plaster models that replicate the patient's oral and maxillofacial morphology through an impression, and are the working basis for indirect method fabrication of restorations. Diagnostic models are used for the study and diagnosis of the patient's oral and maxillofacial system and for the development of restoration or orthodontic appliance design plans.

[0003] In the denture manufacturing process, existing technologies rely on the operator's experience to position the plaster mold. This positioning method is affected by individual differences in experience, making it difficult to maintain consistent accuracy. Ultimately, this results in poor fit between the finished denture and the patient's mouth, causing pain and limited chewing function when the patient wears it. Therefore, this invention provides a precise positioning device for plaster molds used in denture manufacturing to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a precise positioning device for plaster molds used in denture fabrication, solving the problems of difficulty in controlling precision during denture fabrication, poor fit between dentures and the patient's mouth, and thus affecting patient use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise positioning device for plaster molds used in denture fabrication, comprising a worktable, two second protective shells fixedly connected to the upper surface of the worktable, a first servo motor mounted on the outer surface of each second protective shell, a first threaded rod mounted on the output end of each first servo motor after penetrating the second protective shell, a first slider threadedly connected to the outer surface of each first threaded rod, a first electric telescopic rod mounted on the side of each of the two first sliders that are close to each other, a first protective shell fixedly connected to the output end of each first electric telescopic rod, a second servo motor mounted on the outer surface of each first protective shell, a first bidirectional threaded rod mounted on the output end of each second servo motor after penetrating the first protective shell, two second sliders threadedly connected to the outer surface of each first bidirectional threaded rod, and a first clamping plate fixedly connected to the outer surface of each second slider.

[0006] As a further technical solution of this utility model, two support columns are installed on the upper surface of the workbench, and a first electric slide rail is installed on the side of each support column that is close to each other. A first sliding block is slidably connected to the outer surface of each first electric slide rail.

[0007] As a further technical solution of this utility model, a second electric telescopic rod is fixedly connected to the side of each of the two first sliding blocks that are close to each other, and a second fixing block is fixedly connected to the output end of each second electric telescopic rod, and a second motor is installed inside each second fixing block.

[0008] As a further technical solution of this utility model, each of the second motors has a safety housing installed after passing through the second fixing block at its output end, and a third motor is installed on the outer surface of each safety housing. Each of the third motors has a second bidirectional threaded rod installed after passing through the safety housing at its output end.

[0009] As a further technical solution of this utility model, two moving blocks are installed on the outer surface of each of the second bidirectional threaded rods, a second clamping plate is fixedly connected to the outer surface of each moving block, and a third protective shell is fixedly connected to the outer surface of each safety shell.

[0010] As a further technical solution of this utility model, a support frame is installed on the upper surface of the two support columns, and a second electric slide rail is installed on the bottom surface of the support frame. A second sliding block is slidably connected to the outer surface of the second electric slide rail.

[0011] As a further technical solution of this utility model, an electric lifting rod is fixedly connected to the bottom surface of the second sliding block, a support plate is fixedly connected to the output end of the electric lifting rod, a third electric slide rail is installed on the bottom surface of the support plate, a third sliding block is slidably connected to the outer surface of the third electric slide rail, a first fixing block is installed on the bottom surface of the third sliding block, a first motor is installed inside the first fixing block, and a grinding head is installed after the output end of the first motor passes through the first fixing block.

[0012] As a further technical solution of this utility model, a first protective shell is connected to the outer surface of each second protective shell, a second protective shell is connected to the outer surface of each first protective shell, a denture cutting machine is installed on the upper surface of the workbench, two industrial cameras are installed on the inner wall of the denture cutting machine, a controller is installed on the outer surface of the denture cutting machine, and multiple support legs are fixedly connected to the bottom surface of the workbench.

[0013] This invention provides a precise positioning device for plaster molds used in denture fabrication, which has the following advantages compared with the prior art:

[0014] 1. This design provides a precise positioning device for plaster molds used in denture fabrication. A first servo motor drives a first threaded rod to rotate, which in turn moves a first slider along a preset direction, significantly reducing accuracy fluctuations caused by human intervention. Simultaneously, a first electric telescopic rod drives a first protective shell closer to the plaster mold. Then, a second servo motor drives a first bidirectional threaded rod to rotate, causing the first clamping plates on the two second sliders to move synchronously to the side of the plaster mold. Together with a clamping assembly with the same structure on the other side, the four first clamping plates form a symmetrical four-point clamping structure on both sides, ensuring that the clamping force is evenly distributed on both sides of the plaster mold. This clamping method effectively prevents the plaster mold from tilting or shifting due to uneven force during positioning, further guaranteeing the horizontal positioning accuracy of the plaster mold. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a precision positioning device for plaster molds used in denture fabrication;

[0016] Figure 2 A cross-sectional view of a precision positioning device for plaster molds used in the fabrication of dentures;

[0017] Figure 3 An enlarged schematic diagram of the electric lifting rod in a precision positioning device for plaster molds used in denture fabrication;

[0018] Figure 4 A cross-sectional view of a precise positioning device for plaster molds used in denture fabrication;

[0019] Figure 5 A top sectional view of a precision positioning device for plaster molds used in denture fabrication;

[0020] Figure 6 This is an enlarged schematic diagram of the third motor in a precision positioning device for plaster molds used in denture fabrication.

[0021] In the diagram: 1. Workbench; 2. Denture cutting machine; 3. Support leg; 4. Support column; 5. First sliding block; 6. Support frame; 7. Second sliding block; 8. Electric lifting rod; 9. First protective shell; 10. First threaded rod; 11. Controller; 12. First servo motor; 13. First slider; 14. First electric telescopic rod; 15. Second protective shell; 16. First protective shell; 17. First electric slide rail; 18. Second electric slide rail; 19. Support plate; 20. Third... 21. Electric slide rail; 22. Third sliding block; 23. First fixed block; 24. First motor; 25. Grinding head; 26. Moving block; 27. Industrial camera; 28. Second servo motor; 29. ​​First clamping plate; 30. Second fixed block; 31. Second protective shell; 32. First bidirectional threaded rod; 33. Second slider; 34. Second bidirectional threaded rod; 35. Safety shell; 36. Second electric telescopic rod; 37. Third motor; 38. Third protective shell. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides a technical solution for a precise positioning device for plaster molds used in denture fabrication: It includes a workbench 1, with two second protective shells 31 fixedly connected to the upper surface of the workbench 1. A first servo motor 12 is mounted on the outer surface of each second protective shell 31. The output end of each first servo motor 12 passes through the second protective shell 31 and is connected to a first threaded rod 10. A first slider 13 is threadedly connected to the outer surface of each first threaded rod 10. A first electric telescopic rod 14 is mounted on the side of each of the two first sliders 13 that is close to each other. A first protective shell 16 is fixedly connected to the output end of each first electric telescopic rod 14. A second servo motor 27 is mounted on the outer surface of each first protective shell 16. A first bidirectional threaded rod 32 is mounted on the output end of each second servo motor 27 passing through the first protective shell 16. Two second sliders 33 are threadedly connected to the outer surface of each first bidirectional threaded rod 32. A first clamping plate 28 is fixedly connected to the outer surface of each second slider 33.

[0024] like Figure 1 , Figure 3 and Figure 6As shown, two support columns 4 are installed on the upper surface of the workbench 1. A first electric slide rail 17 is installed on the side of each support column 4 that is close to each other. A first sliding block 5 is slidably connected to the outer surface of each first electric slide rail 17. A second electric telescopic rod 36 is fixedly connected to the side of each of the two first sliding blocks 5 that is close to each other. A second fixing block 30 is fixedly connected to the output end of each second electric telescopic rod 36. A second motor 29 is installed inside each second fixing block 30. A safety housing 35 is installed after the output end of each second motor 29 passes through the second fixing block 30. A third motor 37 is installed on the outer surface of each safety housing 35. Each output end has a second bidirectional threaded rod 34 installed after passing through the safety housing 35. Two moving blocks 25 are installed on the outer surface of each second bidirectional threaded rod 34. A second clamping plate is fixedly connected to the outer surface of each moving block 25. A third protective shell 38 is fixedly connected to the outer surface of each safety housing 35. During the grinding process, the second motor 29 is started synchronously. The second motor 29 drives the safety housing 35 to rotate slowly. The safety housing 35 drives the plaster mold fixed inside to rotate synchronously, so that the lower area of ​​the plaster mold can also gradually rotate into the working range of the grinding head 24, realizing the full circumference and no dead angle grinding of the plaster mold, and further improving the flatness and integrity of the plaster mold surface.

[0025] like Figure 1 and Figure 3As shown, a support frame 6 is mounted on the upper surface of both support columns 4. A second electric slide rail 18 is mounted on the bottom surface of the support frame 6. A second sliding block 7 is slidably connected to the outer surface of the second electric slide rail 18. An electric lifting rod 8 is fixedly connected to the bottom surface of the second sliding block 7. A support plate 19 is fixedly connected to the output end of the electric lifting rod 8. A third electric slide rail 20 is mounted on the bottom surface of the support plate 19. A third sliding block 21 is slidably connected to the outer surface of the third electric slide rail 20. A first fixing block 22 is mounted on the bottom surface of the third sliding block 21. A first motor 23 is installed inside the first fixing block 22. A grinding head 24 is installed at the output end of the first motor 23 after passing through the first fixing block 22. The controller 11 activates the second electric slide rail 18 on the bottom surface of the support frame 6, driving the second sliding block 7 to move, thereby causing the electric lifting rod 8 below the second sliding block 7 to move synchronously. Once the electric lifting rod 8 moves directly above the area of ​​the plaster mold to be sanded, the horizontal position is roughly adjusted before sanding. The electric lifting rod 8 then pushes the support plate 19 downwards, causing the third electric slide rail 20 on the support plate 19 to gradually approach the plaster mold until the distance between the third electric slide rail 20 and the surface of the plaster mold reaches the preset sanding spacing. This avoids affecting the sanding effect due to the initial spacing being too large or too small. Then, the third electric slide rail 20 is activated, driving the third sliding block 21 to move along the slide rail direction. By adjusting the position of the third sliding block 21, the sanding components installed on it, including the first fixing block 22, the first motor 23, and the sanding head 24, are precisely aligned with the area of ​​the plaster mold to be sanded. At the same time, the first motor 23 inside the first fixing block 22 is activated. The output end of the first motor 23 drives the sanding head 24 to rotate at high speed, performing fine sanding on the burrs and excess plaster on the edge of the plaster mold.

[0026] like Figure 1 and Figure 4 As shown, each second protective shell 31 has a first protective shell 9 connected to its outer surface, and each first protective shell 16 has a second protective shell 15 connected to its outer surface. A denture cutting machine 2 is installed on the upper surface of the workbench 1. Two industrial cameras 26 are installed on the inner wall of the denture cutting machine 2. A controller 11 is installed on the outer surface of the denture cutting machine 2. Multiple support legs 3 are fixedly connected to the bottom surface of the workbench 1. The controller 11 activates the two industrial cameras 26 on the inner wall of the denture cutting machine 2 to acquire images of the clamped and fixed plaster mold. The industrial cameras 26 take pictures of the positioning marks on the surface of the plaster mold from different angles.

[0027] The working principle of this utility model is as follows: The operator places the polished plaster mold into the center area of ​​the upper surface of the workbench 1. This area needs to be aligned with the clamping range of the first clamping plate 28, and is usually located in the middle of the two second protective shells 31, ensuring that the plaster mold is roughly horizontal without obvious tilting or offset, laying the foundation for subsequent precise adjustment. After the controller 11 sends a synchronous start command to the first servo motor 12 on the outer surface of the two second protective shells 31, the output end of the first servo motor 12 is energized and rotates. Since its output end passes through the second protective shell 31 and is connected to the first threaded rod 1 The first threaded rod 10 is fixedly connected to the first threaded rod 10, thus driving the first slider 13 to rotate synchronously. The first slider 13, which is threaded to the outer surface of the first threaded rod 10, moves under the action of threaded transmission. The synchronous movement of the two first sliders 13 ensures symmetrical adjustment on both sides, avoiding unilateral force deviation of the plaster mold, until the preset close position is reached, that is, the distance between the first electric telescopic rod 14 on the first slider 13 and the side of the plaster mold is reduced to a suitable range. At this time, the controller 11 controls the first servo motor 12 to stop rotating, and the first slider 13 stops moving. Subsequently, the output end of the first electric telescopic rod 14 drives the fixed connection with it. The first protective shell 16 moves closer to the side of the plaster mold until the distance between the first bidirectional threaded rod 32 inside the first protective shell 16 and the side of the plaster mold is reduced to a preset value. At this time, the first electric telescopic rod 14 stops extending. At this time, the first protective shell 16 and the first bidirectional threaded rod 32, the second slider 33, and the first clamping plate 28 inside are aligned with the side of the plaster mold, completing the pre-clamping alignment. Then, the output end of the second servo motor 27 is energized and rotates. Because its output end passes through the first protective shell 16 and is fixedly connected to the first bidirectional threaded rod 32, it drives the first bidirectional threaded rod 32 to rotate synchronously. Two second sliders 33 are threadedly connected to the outer surface of a bidirectional threaded rod 32. Since the threaded rod adopts a bidirectional thread design, that is, the left and right threads rotate in opposite directions, they move in opposite directions under the action of thread transmission, specifically, they move closer to each other. This causes the first clamping plate 28 fixed on the outer surface of each second slider 33 to move synchronously closer to the side of the plaster mold. When the first clamping plate 28 contacts the side of the plaster mold, the second servo motor 27 stops rotating. At this time, the first clamping plates 28 on the two first protective shells 16 complete symmetrical clamping and fixing from both sides of the plaster mold, realizing the precise horizontal positioning of the plaster mold.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A precise positioning device for plaster molds used in denture fabrication, characterized in that, The system includes a workbench (1), on the upper surface of which two second protective shells (31) are fixedly connected. Each second protective shell (31) has a first servo motor (12) installed on its outer surface. The output end of each first servo motor (12) passes through the second protective shell (31) and is connected to a first threaded rod (10). The outer surface of each first threaded rod (10) is threadedly connected to a first slider (13). The two first sliders (13) are close to each other and each has a first electric telescopic rod (14) installed on their respective sides. The output end of each first electric telescopic rod (14) is fixedly connected to a first protective shell (16). The outer surface of each first protective shell (16) is installed with a second servo motor (27). The output end of each second servo motor (27) passes through the first protective shell (16) and is connected to a first bidirectional threaded rod (32). The outer surface of each first bidirectional threaded rod (32) is threadedly connected to two second sliders (33). The outer surface of each second slider (33) is fixedly connected to a first clamping plate (28).

2. The precise positioning device for a plaster mold used in denture fabrication according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with two support columns (4), and each of the support columns (4) is equipped with a first electric slide rail (17) on the side that is close to each other. Each of the first electric slide rails (17) is slidably connected to a first sliding block (5).

3. The precise positioning device for a plaster mold used in denture fabrication according to claim 2, characterized in that, Two first sliding blocks (5) are fixedly connected to a second electric telescopic rod (36) on their sides that are close to each other. Each output end of the second electric telescopic rod (36) is fixedly connected to a second fixing block (30). Each second fixing block (30) is equipped with a second motor (29).

4. The precise positioning device for a plaster mold used in denture fabrication according to claim 3, characterized in that, Each of the second motors (29) has a safety housing (35) installed after passing through the second fixing block (30) at its output end. Each of the safety housings (35) has a third motor (37) installed on its outer surface. Each of the third motors (37) has a second bidirectional threaded rod (34) installed after passing through the safety housing (35) at its output end.

5. The precise positioning device for a plaster mold used in denture fabrication according to claim 4, characterized in that, Two moving blocks (25) are mounted on the outer surface of each of the second bidirectional threaded rods (34), and a second clamping plate is fixedly connected to the outer surface of each of the moving blocks (25). A third protective shell (38) is fixedly connected to the outer surface of each of the safety shells (35).

6. The precise positioning device for a plaster mold used in denture fabrication according to claim 2, characterized in that, A support frame (6) is installed on the upper surface of the two support columns (4). A second electric slide rail (18) is installed on the bottom surface of the support frame (6). A second sliding block (7) is slidably connected to the outer surface of the second electric slide rail (18).

7. The precise positioning device for a plaster mold used in denture fabrication according to claim 6, characterized in that, An electric lifting rod (8) is fixedly connected to the bottom surface of the second sliding block (7). A support plate (19) is fixedly connected to the output end of the electric lifting rod (8). A third electric slide rail (20) is installed on the bottom surface of the support plate (19). A third sliding block (21) is slidably connected to the outer surface of the third electric slide rail (20). A first fixing block (22) is installed on the bottom surface of the third sliding block (21). A first motor (23) is installed inside the first fixing block (22). A grinding head (24) is installed after the output end of the first motor (23) passes through the first fixing block (22).

8. The precise positioning device for a plaster mold used in denture fabrication according to claim 1, characterized in that, Each of the second protective shells (31) has a first protective shell (9) connected to its outer surface, and each of the first protective shells (16) has a second protective shell (15) connected to its outer surface. A denture cutting machine (2) is installed on the upper surface of the workbench (1). Two industrial cameras (26) are installed on the inner wall of the denture cutting machine (2). A controller (11) is installed on the outer surface of the denture cutting machine (2). Multiple support legs (3) are fixedly connected to the bottom surface of the workbench (1).

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