A material tray clamping mechanism for a dental prosthesis engraving and milling machine

Abstract

This utility model relates to the technical field of dental prosthesis processing equipment and discloses a material tray clamping mechanism for a dental prosthesis carving and milling machine. The mechanism includes a clamping platform, a triangular prism fixedly mounted at the center of the bottom end of the clamping platform, and cylinders fixedly mounted on each of the three sides of the triangular prism. A slide is fixedly connected to the telescopic rod of each cylinder, and a right-angle arm is fixedly mounted at the top of the slide. A wedge-shaped chuck is fixedly mounted on one side of the right-angle arm, and a pressure sensor is fixedly mounted on the center of one side of the wedge-shaped chuck. The clamping platform provides support for the material tray of the dental prosthesis carving and milling machine. The cylinders on the three sides of the triangular prism drive the three slides respectively, enabling the wedge-shaped chuck to clamp the material tray. The pressure sensor monitors the pressure between the wedge-shaped chuck and the material tray, ensuring the stability of the clamping force. This eliminates the need for manual operation and improves automation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dental prosthesis processing equipment technology, specifically to a material tray clamping mechanism for a dental prosthesis milling machine. Background Technology

[0002] In denture processing equipment, the material tray (or processing tray) is a key component used to fix and position denture processing materials (such as zirconia blocks, resin blocks, wax blocks, etc.). It is usually a round or square metal / ceramic tray that needs to be wear-resistant and corrosion-resistant. The denture blank (such as zirconia blocks) is fixed by mechanical clamping, vacuum adsorption or bonding to prevent displacement or vibration during processing.

[0003] The patent application "201821807679.5" discloses a "novel material tray clamping assembly for a dental prosthesis carving and milling machine," which "includes a bottom plate, with two fixed plates on the bottom plate, and a material feeding tray between the two fixed plates. One fixed plate is connected to a drive shaft, the end of which is connected to a motor. The other fixed plate is connected to a driven shaft, the ends of which are connected to the drive shaft and the material feeding tray via a key. The surface of the material feeding tray has a material feeding groove, and a threaded push rod fixing plate is vertically connected to the material feeding groove. A threaded push rod is vertically inserted into the threaded push rod fixing plate, and a push block is connected to the front end of the threaded push rod. The push block has a push slot, and a material tray is clamped in the push slot. A clamping groove is formed on the inner wall of the material feeding groove, and a spring block is connected to the inner wall of the clamping groove. The material tray clamping mechanism of this utility model can not only achieve stable clamping of the material tray without tilting or loosening, but also has high clamping stability and improves processing effect. At the same time, it can also realize rapid material changing, greatly improving processing efficiency."

[0004] However, the above method still has the following drawbacks: the push block driven by the threaded push rod can fix the material tray, but it requires manual operation, has low automation efficiency, and is relatively labor-intensive and time-consuming. In addition, the self-locking property of the threaded push rod is poor, and it is easy to back out, which will reduce the fixing effect of the material tray. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a material tray clamping mechanism for a dental prosthesis engraving and milling machine, which has the advantages of simple operation and high automation efficiency, thus solving the problems mentioned in the background technology.

[0006] This utility model provides the following technical solution: a material tray clamping mechanism for a dental prosthesis carving and milling machine, including a clamping platform, a triangular prism fixedly provided at the center of the bottom end of the clamping platform, cylinders fixedly installed on the three sides of the triangular prism, a slide table fixedly connected to the telescopic rod of the cylinders, a right-angle arm fixedly provided at the top of the slide table, a wedge-shaped chuck fixedly provided on one side of the right-angle arm, a pressure sensor fixedly installed at the center of one side of the wedge-shaped chuck, a sliding support assembly for guiding the wedge-shaped chuck, a pin slidably provided at the top of the right-angle arm, a cylinder for driving the pin fixedly installed at the top of the right-angle arm, and a buffer assembly at the top of the pin.

[0007] As a preferred technical solution of this utility model, the sliding support assembly includes a vertical plate, and the top and bottom of the vertical plate are provided with rod grooves. A rod is inserted into the inside of the rod groove. One end of the rod is fixedly provided with a sliding rod that is slidably connected to the right-angle arm. The diameter of the sliding rod is larger than the diameter of the rod. One end of the sliding rod is fixedly connected to one side of the wedge-shaped clamp. The other end of the rod is provided with threads, and a nut is threaded onto the surface of the threads.

[0008] As a preferred technical solution of this utility model, a slide rail is provided at the top of the right-angle arm, and a sliding sleeve that is slidably connected to the ejector pin is fixed at both the top and bottom of the slide rail.

[0009] As a preferred technical solution of this utility model, a material tray positioning groove is provided in the middle of the top of the clamping platform, and a sliding groove is provided on the surface of the clamping platform to slide and connect with the sliding table.

[0010] As a preferred embodiment of the present invention, the buffer assembly includes a sliding plate, with guide posts slidably connected to both sides of the sliding plate. A spring is sleeved on the surface of the guide post, and a pressure plate is fixedly connected to the bottom end of the guide post. The top end of the ejector pin is fixedly connected to the middle part of the bottom end of the pressure plate.

[0011] As a preferred technical solution of this utility model, a bracket is welded to one side of the top of the right-angle arm, the second cylinder is fixedly connected to the top of the bracket, and guide rails that are slidably connected to the slide plate are fixedly provided on the inner walls of both sides of the bracket.

[0012] As a preferred technical solution of this utility model, the telescopic rod of the second cylinder is fixedly connected to a connector, and the middle part of the top of the slide plate is fixedly connected to the bottom end of the connector by screws.

[0013] As a preferred embodiment of this utility model, the bottom end of the triangular prism is fixedly connected to a base plate, the surface of the base plate is provided with a plurality of mounting holes, and the top end of the base plate is fixedly provided with a plurality of uprights, the top end of the uprights being fixedly connected to the bottom end of the clamping platform.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The clamping platform provides support for the material tray of the dental prosthesis engraving and milling machine. The cylinders on the three sides of the triangular prism drive the three slides respectively, enabling the wedge chuck to clamp the material tray. The pressure sensor can monitor the pressure between the wedge chuck and the material tray, ensuring the stability of the clamping force. No manual operation is required, which improves the automation efficiency and saves manpower and time. The sliding support component provides support for the wedge chuck. By sliding the wedge chuck with the sliding support component, the distance between the wedge chuck and the direct arm can be increased, which can increase the operating space and facilitate the installation and removal of the pressure sensor.

[0016] 2. The right-angle arm provides support for the cylinder and the ejector pin. When the right-angle arm moves the wedge chuck, the ejector pin can move synchronously. The ejector pin is driven by the cylinder and can fix the top of the material tray. The buffer component can provide buffer between the ejector pin and the material tray, reducing the impact force. The ejector pin is not easy to deform or be damaged, and it can reduce the pressure fluctuation between the ejector pin and the material tray. The ejector pin and the wedge chuck cooperate to provide six-point positioning for the material tray and the clamping force is uniform. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the right-angle arm of this utility model;

[0020] Figure 4 This is a schematic diagram of the sliding support assembly of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the ejector pin of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the buffer component of this utility model.

[0023] In the diagram: 1. Clamping platform; 2. Triangular prism; 3. Cylinder 1; 4. Slide table; 5. Right-angle arm; 6. Wedge chuck; 7. Sliding support assembly; 701. Vertical plate; 702. Rod groove; 703. Insert rod; 704. Slide rod; 705. Thread; 706. Nut; 8. Pressure sensor; 9. Bracket; 10. Cylinder 2; 11. Slide rail; 12. Ejector pin; 13. Buffer assembly; 1301. Slide plate; 1302. Guide post; 1303. Spring; 1304. Pressure plate; 14. Connector; 15. Guide rail; 16. Material tray positioning groove; 17. Slide groove; 18. Vertical column; 19. Base plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-6 The material tray clamping mechanism of the dental prosthesis milling machine includes a clamping platform 1. A triangular prism 2 is fixedly installed at the center of the bottom end of the clamping platform 1. Cylinders 3 are fixedly installed on the three sides of the triangular prism 2. The telescopic rod of the cylinders 3 is fixedly connected to a slide 4. A right-angle arm 5 is fixedly installed at the top of the slide 4. A wedge-shaped chuck 6 is fixedly installed on one side of the right-angle arm 5. A pressure sensor 8 is fixedly installed in the middle of one side of the wedge-shaped chuck 6. A sliding support assembly 7 is provided on one side of the wedge-shaped chuck 6 to guide it. A pin 12 is slidably installed at the top of the right-angle arm 5. The top of the arm 5 is fixedly equipped with a second cylinder 10 that drives the ejector pin 12. The top of the ejector pin 12 is equipped with a buffer assembly 13. The clamping table 1 can provide support for the material tray of the dental prosthesis carving and milling machine. The three slides 4 are driven by the cylinders 3 on the three sides of the triangular prism 2, which can make the wedge chuck 6 clamp the material tray. The pressure sensor 8 can monitor the pressure between the wedge chuck 6 and the material tray, which can ensure the stability of the clamping force. No manual operation is required, which improves the automation efficiency and saves manpower and time.

[0026] In this embodiment, preferably, the sliding support assembly 7 includes a vertical plate 701. The top and bottom of the vertical plate 701 are provided with rod grooves 702. A rod 703 is inserted and connected inside the rod groove 702. One end of the rod 703 is fixedly provided with a slide rod 704 that is slidably connected to the right-angle arm 5. The diameter of the slide rod 704 is larger than the diameter of the rod 703. One end of the slide rod 704 is fixedly connected to one side of the wedge-shaped chuck 6. The other end of the rod 703 is provided with a thread 705. A nut 706 is threadedly connected to the surface of the thread 705. The slide rod 704 avoids the rigid connection between the wedge-shaped chuck 6 and the right-angle arm 5, and can support and guide the wedge-shaped chuck 6, which can prevent the wedge-shaped chuck 6 from tilting and shifting, and improve the stability of the wedge-shaped chuck 6.

[0027] In this embodiment, preferably, the buffer assembly 13 includes a slide plate 1301, with guide posts 1302 slidably connected to both sides of the slide plate 1301. A spring 1303 is sleeved on the surface of each guide post 1302. A pressure plate 1304 is fixedly connected to the bottom end of each guide post 1302. The top end of the ejector pin 12 is fixedly connected to the middle of the bottom end of the pressure plate 1304. A bracket 9 is welded to one side of the top end of the right-angle arm 5. A cylinder 10 is fixedly connected to the top end of the bracket 9. Guide rails 15, which slidably connect to the slide plate 1301, are fixedly provided on the inner walls of both sides of the bracket 9. The telescopic rod of cylinder 2 10 is fixedly connected to connector 14. The middle part of the top of the slide plate 1301 is fixedly connected to the bottom of connector 14 by screws. Cylinder 2 10 can be supported by bracket 9. Connector 14 can fix slide plate 1301 to telescopic rod of cylinder 2 10. When cylinder 2 10 drives ejector pin 12 to descend, spring 1303 can be compressed by force, which can provide buffer between ejector pin 12 and material tray, reduce the impact force between ejector pin 12 and material tray, reduce pressure fluctuation, and maintain pressure stability.

[0028] In this embodiment, preferably, a slide 11 is provided at the top of the right-angle arm 5. Sleeves that are slidably connected to the ejector pin 12 are fixed at the top and bottom of the slide 11. The ejector pin 12 can be guided by the sleeves inside the slide 11, which can prevent the ejector pin 12 from tilting and maintain the verticality of the ejector pin 12.

[0029] In this embodiment, preferably, a base plate 19 is fixedly connected to the bottom end of the triangular prism 2. The surface of the base plate 19 has several mounting holes, and the top end of the base plate 19 has several uprights 18 fixedly connected to the bottom end of the clamping platform 1. The center of the top end of the clamping platform 1 has a tray positioning groove 16, and the surface of the clamping platform 1 has a sliding groove 17 that is slidably connected to the slide table 4. The base plate 19 can be fixed on the dental prosthesis carving and milling machine through the mounting holes. The base plate 19 can provide support for the clamping platform 1 through the uprights 18. By setting a flange at the bottom end of the tray and placing the flange into the tray positioning groove 16, the tray positioning groove 16 can be kept in a centered state, and the tray positioning groove 16 is not easy to shift.

[0030] In use, the base plate 19 is first fixed to the dental prosthesis carving and milling machine through the mounting holes. Then, the flange at the bottom of the material tray is placed into the material tray positioning groove 16 to keep the material tray positioning groove 16 in a centered state. The clamping platform 1 can provide support for the material tray of the dental prosthesis carving and milling machine. Then, the cylinders 3 on the three sides of the triangular column 2 drive the three slides 4 respectively, so that the wedge chuck 6 clamps the material tray and fixes it. During this process, the pressure sensor 8 can monitor the pressure between the wedge chuck 6 and the material tray to ensure the stability and uniformity of the clamping force.

[0031] When the right-angle arm 5 moves the wedge chuck 6, the ejector pin 12 can move synchronously. After the wedge chuck 6 clamps the material tray, the telescopic rod of the control cylinder 10 extends, and the spring 1303 of the buffer assembly 13 can be compressed under force, which can provide buffer between the ejector pin 12 and the material tray, reduce the impact force between the ejector pin 12 and the material tray, and reduce pressure fluctuations, thus maintaining the stability of the pressure between the ejector pin 12 and the material tray. The ejector pin 12 and the wedge chuck 6 cooperate to provide six-point positioning for the material tray, so that the prosthesis inside the material tray can be engraved and milled by the engraving and milling machine.

[0032] After the engraving and milling are completed, the ejector pin 12 is first lifted by cylinder 2 10, and then the slide table 4 is pulled back by cylinder 1 3, which releases the material tray and allows it to be removed. After the material tray is removed, the nut 706 is loosened, and the wedge chuck 6 and pressure sensor 8 can be removed, allowing for repair and replacement of the wedge chuck 6 and pressure sensor 8.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stock tray clamping mechanism of a denture carving and milling machine, comprising a clamping table (1), characterized in that: A triangular prism (2) is fixedly installed at the middle of the bottom end of the clamping platform (1). A cylinder (3) is fixedly installed on each of the three sides of the triangular prism (2). A slide (4) is fixedly connected to the telescopic rod of the cylinder (3). A right-angle arm (5) is fixedly installed at the top of the slide (4). A wedge-shaped chuck (6) is fixedly installed on one side of the right-angle arm (5). A pressure sensor (8) is fixedly installed in the middle of one side of the wedge-shaped chuck (6). A sliding support assembly (7) is provided on one side of the wedge-shaped chuck (6) to guide it. A pin (12) is slidably installed at the top of the right-angle arm (5). A cylinder (10) is fixedly installed at the top of the right-angle arm (5) to drive the pin (12). A buffer assembly (13) is provided at the top of the pin (12).

2. The denture carver's tray clamping mechanism according to claim 1, wherein: The sliding support assembly (7) includes a vertical plate (701), with rod grooves (702) at the top and bottom of the vertical plate (701). A rod (703) is inserted into the rod groove (702). One end of the rod (703) is fixedly provided with a sliding rod (704) that is slidably connected to the right-angle arm (5). The diameter of the sliding rod (704) is larger than the diameter of the rod (703). One end of the sliding rod (704) is fixedly connected to one side of the wedge-shaped chuck (6). The other end of the rod (703) is provided with threads (705), and a nut (706) is threaded onto the surface of the threads (705).

3. The denture carver's tray clamping mechanism of claim 1 wherein: The top of the right-angle arm (5) is provided with a slide (11), and the top and bottom of the slide (11) are both fixed with a sliding sleeve that is slidably connected to the ejector pin (12).

4. The denture carver's tray clamping mechanism of claim 1 wherein: The clamping platform (1) has a material tray positioning groove (16) in the middle of its top end, and the surface of the clamping platform (1) has a sliding groove (17) that is slidably connected to the sliding table (4).

5. The denture carver's tray clamping mechanism of claim 1 wherein: The buffer assembly (13) includes a slide plate (1301), and guide posts (1302) are slidably connected to both sides of the slide plate (1301). A spring (1303) is sleeved on the surface of the guide post (1302). A pressure plate (1304) is fixedly connected to the bottom end of the guide post (1302). The top end of the ejector pin (12) is fixedly connected to the middle part of the bottom end of the pressure plate (1304).

6. The denture carver's tray clamping mechanism of claim 5 wherein: A bracket (9) is welded to one side of the top of the right-angle arm (5). The cylinder (10) is fixedly connected to the top of the bracket (9). The inner walls on both sides of the bracket (9) are fixedly provided with guide rails (15) that are slidably connected to the slide plate (1301).

7. The denture carver's tray clamping mechanism of claim 5 wherein: The telescopic rod of the second cylinder (10) is fixedly connected to the connector (14), and the middle part of the top of the slide plate (1301) is fixedly connected to the bottom end of the connector (14) by screws.

8. The denture carver's tray clamping mechanism of claim 1 wherein: The bottom end of the triangular prism (2) is fixedly connected to a base plate (19). The surface of the base plate (19) is provided with several mounting holes. The top end of the base plate (19) is fixedly provided with several columns (18). The top end of the columns (18) is fixedly connected to the bottom end of the clamping platform (1).

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