A five-axis laser cutting apparatus for dental model manufacturing

Abstract

The application discloses a five-axis laser cutting equipment for dental mold manufacturing and relates to the field of laser cutting equipment, which comprises an equipment rack, a sliding rack, conveying equipment and a feeding and discharging manipulator, wherein the three are relatively fixed in position, the upper end surface of the sliding rack is slidably provided with a five-axis machine table, the sliding rack is used for adjusting the longitudinal position of the five-axis machine table, the upper end surface of the sliding rack is fixedly provided with a portal frame, the portal frame is slidably provided with a fixing frame, the portal frame is used for adjusting the transverse position and the axial position of the fixing frame, and the upper end surface of the fixing frame is fixedly provided with a laser lens, the cooperation of the circulating suction unit and the peculiar smell adsorption unit can effectively suck and purify the smoke generated during the laser cutting of the dental mold, the circulating suction and purification mode can effectively filter the solid impurities in the smoke, the peculiar smell of the gas in the smoke can be eliminated, and therefore, the air quality in the factory is ensured.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment, specifically a five-axis laser cutting device for dental mold manufacturing. Background Technology

[0002] 3D printing technology allows for the mass production of dental molds without the need for mold making. After the dental molds are produced, the excess support structure on the surface of the dental mold needs to be cut off by laser cutting equipment. The batch of dental molds are then transported by a transport device, and then placed on a five-axis machine by a robotic arm. The excess structure on the surface of the dental mold is cut off by laser. After the cutting is completed, the dental mold is removed from the five-axis machine by the robotic arm and placed in a receiving box.

[0003] During the laser cutting of dental molds, pungent fumes are generated due to the sintering of the mold material. If these fumes are allowed to drift freely within the factory area, they will seriously affect the air quality. Therefore, a suction system is needed to extract and purify the fumes. However, due to the small size of the dental molds and the relatively small laser processing space, if the suction port is large, it will be too far from the laser cutting area, resulting in the fumes not being completely extracted and purified. If the suction port is small, it can be close to the laser cutting area, but the fumes will easily escape. Therefore, commonly used suction systems on the market cannot effectively extract and purify the fumes generated at the laser cutting station. Summary of the Invention

[0004] The purpose of this invention is to provide a five-axis laser cutting device for dental mold manufacturing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a five-axis laser cutting device for dental mold manufacturing, comprising: a machine stand, a sliding frame, a transport device, and a loading / unloading robot mounted on the machine stand, the three of which are relatively fixed in position; a five-axis machine is slidably mounted on the upper end face of the sliding frame; the sliding frame is used to adjust the longitudinal position of the five-axis machine; a gantry frame is fixedly mounted on the upper end face of the sliding frame, and a fixed frame is slidably mounted on the gantry frame; the gantry frame is used to adjust the lateral and axial positions of the fixed frame; a laser lens is fixedly mounted on the upper end face of the fixed frame, with the output end of the lens facing downwards; a laser generator is also fixedly mounted on the upper end face of the gantry frame; a dental mold is placed on the platform of the five-axis machine; the laser beam refracted by the fixed frame cuts the dental mold; the transport device is used to transport batches of dental molds; and the loading / unloading robot is used to place the dental mold on the platform of the five-axis machine and to remove the processed dental mold from the platform.

[0006] It also includes: a circulating suction unit for suctioning the smoke generated by laser cutting, the circulating suction unit being disposed outside the fixed frame;

[0007] An odor adsorption unit is used to adsorb and purify odors in smoke, and the odor adsorption unit is located inside the circulating suction unit.

[0008] Preferably, the circulating suction unit includes a U-shaped tube fixed to the outside of the fixed frame, with both ends of the U-shaped tube located at the bottom. The two lower ends of the U-shaped tube are distributed facing each other. Both ends of the U-shaped tube are fixedly connected to flared portions, and a concentrically fixed conical diverter is mounted inside one of the flared portions. The conical portion of the diverter extends into the interior of the U-shaped tube. A vertically shaped sleeve is also fixedly connected to the middle portion of the U-shaped tube, and a gear differential is fixedly mounted inside the sleeve. The output end of the differential faces upward and the input end faces downward. An impeller is fixedly mounted on the output end of the gear differential. A motor is fixedly mounted on the outer wall of the sleeve, and a second rotating shaft is fixedly mounted on the output end of the motor. The second rotating shaft is perpendicular to the input end of the gear differential. A first bevel gear is fixedly mounted on the outer surface of the second rotating shaft and the outer surface of the input end of the gear differential, and the two first bevel gears mesh with each other. A filter component is also provided inside the sleeve, which is used to isolate solid impurities in the smoke.

[0009] Preferably, the filter component includes a fixed disk located below the impeller, and the fixed disk is fixed inside the sleeve. A rotating ring is rotatably mounted inside the fixed disk, and the inside of the rotating ring is fixed to the input end of the gear differential by a bracket. A filter element is fixed to the lower end face of the rotating ring.

[0010] Preferably, the sleeve is further provided with a scraping component for removing solid impurities attached to the lower end face of the filter element. The scraping component is also provided with an auxiliary feeding component for discharging solid impurities accumulated inside the scraping component. The scraping component includes a straight cylinder located on the lower end face of the fixed disc. One end of the straight cylinder is fixedly inserted through the sleeve, and the other end of the straight cylinder is located at the center of the rotating ring. An opening is provided at the upper part of the straight cylinder near the center of the rotating ring, and the upper edge of the opening is tangent to the lower end face of the filter element. The length of the opening is greater than the radius of the filter element. A first rotating shaft is rotatably mounted inside the straight cylinder, and a spiral blade is fixedly sleeved on the outer surface of the first rotating shaft. The output end of the motor is connected to the outer surface of the end of the first rotating shaft extending out of the straight cylinder by a synchronous gear and a synchronous toothed belt for transmission.

[0011] Preferably, the upper edge of the opening is serrated.

[0012] Preferably, the auxiliary feeding component includes a discharge port formed on the lower end face of the straight cylinder, the discharge port being located at the end of the straight cylinder extending from the sleeve, and a detachable magnetic receiving box being provided on the lower end face of the discharge port. The lower port of the magnetic receiving box has several through holes. A sealing cylinder is fixedly connected to the upper end face of the straight cylinder, and the sealing cylinder is located directly above the magnetic receiving box. A piston disc is slidably assembled inside the sealing cylinder, and a piston rod that slides through the sealing cylinder is fixedly provided on the upper end face of the piston disc. A spring is also provided between the upper end face of the piston disc and the sealing cylinder. A crank rod is fixedly provided on the top of the piston rod, and the crank rod is sleeved outside the second rotating shaft. A cam that pushes the crank rod upward is fixedly sleeved on the outer surface of the second rotating shaft. The joint between the sealing cylinder and the straight cylinder is in the shape of a thin tube, and the inner diameter of the thin tube is smaller than the inner diameter of the sealing cylinder.

[0013] Preferably, the odor adsorption unit includes an activated carbon box located above the fixed plate. The activated carbon box is fixed inside the sleeve. The upper and lower end faces of the sleeve are provided with a plurality of air holes. The activated carbon box contains a plurality of activated carbon granules, and the outer diameter of the activated carbon granules is much larger than the outer diameter of the air holes. A fixed cylinder is fixedly provided at the center of the activated carbon box, and the fixed cylinder is rotatably sleeved on the outer surface of the input end of the gear differential. An isolation rotating cylinder is rotatably provided inside the activated carbon box, and the isolation rotating cylinder is coaxially distributed with the fixed cylinder. A turning component is also provided inside the isolation rotating cylinder. The turning component is used to turn the activated carbon granules inside the activated carbon box. The activated carbon granules are distributed between the activated carbon box and the isolation rotating cylinder.

[0014] Preferably, the toggle component includes a plurality of rotating rods circumferentially distributed at equal intervals inside the isolation rotating cylinder, with the axis of the rotating rods perpendicular to the axis of the fixed cylinder. The fixed cylinder has an internal partition layer, and a second bevel gear is fixedly mounted on one end of the partition layer. A collar is also fixedly sleeved on the outer surface of the input end of the gear differential, and the collars are distributed in the middle of the partition layer. A connecting rod is rotatably mounted on one end of the rotating rod that extends into the isolation rotating cylinder, and the connecting rod is fixed to the collar. A third bevel gear that movably meshes with the second bevel gear is also fixedly sleeved on the outer surface of each rotating rod. A toggle plate is also fixedly mounted on the outer surface of each rotating rod.

[0015] Preferably, the pores are not distributed on the upper and lower end faces of the isolation rotating cylinder.

[0016] Preferably, the outer diameter of the third bevel gear is smaller than the outer diameter of the second bevel gear.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, through the combined action of a circulating suction unit and an odor adsorption unit, can effectively extract and purify the smoke generated at the laser cutting position of the dental mold. By using the circulating suction purification method, it can effectively filter solid impurities in the smoke and eliminate the odor of the gas in the smoke, thereby ensuring the air quality in the factory. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the U-shaped conduit position distribution structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the flared section and conical flow divider structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the sleeve of the present invention;

[0023] Figure 5 This is a schematic diagram of the rotating ring and filter element structure of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 This is a schematic diagram of the serrated structure at the upper edge of the opening of the present invention;

[0026] Figure 8 This is a schematic diagram of the rack and pinion structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the internal structure of the activated carbon box of the present invention;

[0028] Figure 10 This is a schematic diagram of the internal structure of the isolation rotating drum of the present invention.

[0029] In the diagram: 1. Equipment stand; 2. Sliding stand; 3. Gantry frame; 4. Five-axis machine base; 5. Laser generator; 6. Fixed frame; 7. Transport equipment; 8. Loading / unloading robot; 9. Laser polarizer; 10. U-shaped pipe; 11. Sleeve; 12. Flared end; 13. Conical distributor; 14. Motor; 15. Gear differential; 16. Impeller; 17. First bevel gear; 18. Fixed plate; 19. Rotary ring; 20. Filter element; 21. Straight... 21. Cylinder; 22. Opening; 23. First rotating shaft; 24. Spiral blade; 25. Sealing cylinder; 26. Magnetic receiving box; 27. Spring; 28. Piston rod; 29. ​​Crank rod; 30. Cam; 31. Activated carbon box; 32. Fixed cylinder; 33. Second bevel gear; 34. Third bevel gear; 35. Rotating rod; 36. Actuating plate; 37. Collar; 38. Connecting rod; 39. Isolating rotating cylinder; 40. Air hole; 41. Piston disc; 42. Second rotating shaft. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figures 1-9 The diagram shows a five-axis laser cutting device for dental mold manufacturing, comprising: a machine platform 1, a sliding frame 2 mounted above the machine platform 1, a transport device 7, and a loading / unloading robot 8, all three being relatively fixed in position. A five-axis machine tool 4 is slidably mounted on the upper surface of the sliding frame 2, which is used to adjust the longitudinal position of the five-axis machine tool 4. A gantry frame 3 is fixedly mounted on the upper surface of the sliding frame 2, and a fixed frame 6 is slidably mounted on the gantry frame 3. The gantry frame 3 is used to adjust the lateral and axial positions of the fixed frame 6. The upper surface of the fixed frame 6 is fixed... The machine is equipped with a laser lens with its output end facing downwards. A laser generator 5 is also fixedly installed on the upper surface of the gantry 3. The laser beam generated by the laser generator 5 enters the interior of the laser lens under the action of the laser polarizer 9, and then is refracted downwards for laser cutting. A dental mold is placed on the platform of the five-axis machine 4. The laser beam refracted by the fixed frame 6 cuts the dental mold. The transport equipment 7 is used to transport batches of dental molds. The loading and unloading robot 8 is used to place the dental mold on the platform of the five-axis machine 4 and to remove the processed dental mold from the platform.

[0032] It also includes: a circulating suction unit, used to suction out the smoke generated by laser cutting, and the circulating suction unit is located outside the fixed frame 6;

[0033] The odor adsorption unit is used to adsorb and purify odors in smoke. The odor adsorption unit is located inside the circulating suction unit.

[0034] The circulating suction unit includes a U-shaped pipe 10 fixed to the outside of the fixed frame 6, with both ends of the U-shaped pipe 10 located at the bottom. The two lower ends of the U-shaped pipe 10 are distributed facing each other. Both ends of the U-shaped pipe 10 are fixedly connected to a flared section 12, and a concentrically fixed conical diverter cylinder 13 is installed inside one of the flared sections 12. The conical part of the conical diverter cylinder 13 extends into the interior of the U-shaped pipe 10. A vertical sleeve 11 is also fixedly connected to the middle part of the U-shaped pipe 10. A gear differential 15 is fixedly installed inside the sleeve 11, with the output end of the gear differential 15 facing upwards and the input end facing downwards. An impeller 16 is fixedly installed at the output end of the gear differential 15. A motor 14 is fixedly installed on the outer wall of the sleeve 11, and a second rotating shaft 4 is fixedly installed at the output end of the motor 14. 2. The second rotating shaft 42 and the input end of the gear differential 15 are vertically distributed. The outer surface of the second rotating shaft 42 and the outer surface of the input end of the gear differential 15 are both fixedly fitted with the first bevel gear 17, and the two first bevel gears 17 mesh with each other. The sleeve 11 is also provided with a filter component, which is used to isolate solid impurities in the smoke. The gear differential 15 has an acceleration effect. When the motor 14 slowly rotates the input end of the gear differential 15 through the two meshing first bevel gears 17, the impeller 16 can rotate at high speed, causing one of the flared parts 12 located below the sleeve 11 to generate suction. The other flared part 12 diffuses the airflow through the conical diverter 13, which blows the smoke, so that the smoke can be completely drawn into the interior of the U-shaped pipe 10.

[0035] The filter component includes a fixed disk 18 located below the impeller 16, and the fixed disk 18 is fixed inside the sleeve 11. A rotating ring 19 is rotatably mounted inside the fixed disk 18, and the inside of the rotating ring 19 is fixed to the input end of the gear differential 15 through a bracket. A filter element 20 is fixed on the lower end face of the rotating ring 19. When smoke passes through the filter element 20, the solid particulate matter in the smoke will be isolated on the lower end face of the filter element 20.

[0036] The sleeve 11 is also equipped with a scraping component, which is used to remove solid impurities attached to the lower end face of the filter element 20. The scraping component also has an auxiliary feeding component, which is used to discharge solid impurities accumulated inside the scraping component. The scraping component includes a straight cylinder 21 located on the lower end face of the fixed disk 18. One end of the straight cylinder 21 is fixedly inserted through the sleeve 11, and the other end of the straight cylinder 21 is located at the center of the rotating ring 19. An opening 22 is provided at the upper part of the straight cylinder 21 near the center of the rotating ring 19, and the upper edge of the opening 22 is tangent to the lower end face of the filter element 20. The length of the opening 22 is greater than the radius of the filter element 20. A first rotating shaft 23 is rotatably mounted inside the straight cylinder 21, and a spiral blade 24 is fixedly fitted on the outer surface of the first rotating shaft 23. The output end of the motor 14 is connected to the outer surface of the end of the first rotating shaft 23 extending out of the straight cylinder 21 via a synchronous gear and a synchronous toothed belt for transmission. Figure 7 When the rotating ring 19 rotates clockwise with the filter element 20, the solid impurity particles accumulated on the lower end face of the filter element 20 will be scraped off by the upper edge of the opening 22 and fall into the inside of the straight cylinder 21. With the rotation of the first rotating shaft 23 with the spiral blade 24, the solid impurity particles that fall into the inside of the straight cylinder 21 can be accumulated.

[0037] The upper edge of the opening 22 is serrated, and the serrated edge slides in contact with the lower end face of the filter element 20, which can better scrape off the fixed particulate impurities adhering to the lower end face of the filter element 20.

[0038] The auxiliary feeding component includes a discharge port on the lower end face of the straight cylinder 21, located at the end of the straight cylinder 21 extending out of the sleeve 11. A detachable magnetic receiving box 26 is also provided on the lower end face of the discharge port. The lower port of the magnetic receiving box 26 has several through holes. A sealing cylinder 25 is fixedly connected to the upper end face of the straight cylinder 21, and the sealing cylinder 25 is located directly above the magnetic receiving box 26. A piston disc 41 is slidably mounted inside the sealing cylinder 25, and a piston rod 28 that slides through the sealing cylinder 25 is fixedly provided on the upper end face of the piston disc 41. A spring 27 is also provided between the upper end face of the piston disc 41 and the sealing cylinder 25. A crank rod 29 is fixedly provided at the top of the piston rod 28, and the crank rod 29 is sleeved on the outside of the second rotating shaft 42. The outer surface of the second rotating shaft 42 is fixed... A cam 30 is fitted to push the crank 29 upward. The joint between the sealing cylinder 25 and the straight cylinder 21 is in the shape of a thin tube, the inner diameter of which is smaller than that of the sealing cylinder 25. When the cam 30 rotates with the second rotating shaft 42, it can first slowly push the crank 29 upward and compress the spring 27. Then, the protruding part of the cam 30 releases the crank 29 instantly. The crank 29, piston rod 28 and piston disc 41 will then quickly move downward and reset. During the slow rise of the piston disc 41, the sealing cylinder 25 contains a lot of air. When the piston disc 41 moves downward quickly, due to the shape of the thin tube, a high-pressure airflow will be generated at the lower end of the thin tube. This airflow can wash away the impurities adhering to the surface of the spiral blade 24 and collect the solid impurities inside the magnetic receiving box 26.

[0039] The odor adsorption unit includes an activated carbon box 31 located above a fixed plate 18. The activated carbon box 31 is fixed inside a sleeve 11. Several air holes 40 are opened on the upper and lower end faces of the sleeve 11. Several activated carbon granules are placed inside the activated carbon box 31, and the outer diameter of the activated carbon granules is much larger than the outer diameter of the air holes 40. A fixed cylinder 32 is fixedly installed at the center of the activated carbon box 31, and the fixed cylinder 32 is rotatably sleeved on the outer surface of the input end of the gear differential 15. An isolation rotating cylinder 39 is rotatably installed inside the activated carbon box 31, and the isolation rotating cylinder 39 and the fixed cylinder 32 are coaxially distributed. A turning component is also provided inside the isolation rotating cylinder 39. The turning component is used to turn the activated carbon granules inside the activated carbon box 31. The activated carbon granules are distributed between the activated carbon box 31 and the isolation rotating cylinder 39. When the gas in the smoke moves upward and passes through the activated carbon box 31, the activated carbon granules inside the activated carbon box 31 can adsorb the odor in the gas and purify the gas.

[0040] Example 2: Please refer to Figure 9 and Figure 10This embodiment is a further description of other embodiments. The turning component includes a plurality of rotating rods 35 circumferentially distributed inside the isolation rotating cylinder 39, with the axis of the rotating rods 35 perpendicular to the axis of the fixed cylinder 32. The fixed cylinder 32 has an internal partition layer, and a second bevel gear 33 is fixedly mounted on one end of the partition layer. A collar 37 is also fixedly sleeved on the outer surface of the input end of the gear differential 15, and the collars 37 are distributed in the middle of the partition layer. A connecting rod 38 is rotatably mounted on one end of the rotating rod 35 that extends into the isolation rotating cylinder 39, and the connecting rod 38 is fixed to the collar 37. Each rotating rod 35... The outer surface of 5 is also fixedly fitted with a third bevel gear 34 that meshes with the second bevel gear 33. The outer surface of each rotating rod 35 is also fixedly fitted with a toggle plate 36. When the input end of the gear differential 15 rotates with the collar 37, the collar 37 will rotate the rotating rod 35 and the isolation rotating cylinder 39 inside the activated carbon box 31 through the connecting rod 38. Moreover, the meshing of the third bevel gear 34 with the second bevel gear 33 can also make the rotating rod 35 rotate. The toggle plate 36 can continuously agitate several activated carbon particles, so that the activated carbon particles inside the activated carbon box 31 can evenly absorb the odor in the smoke.

[0041] The pores 40 are not distributed on the upper and lower end faces of the isolation drum 39. Because no activated carbon is placed inside the isolation drum 39, when the gas in the smoke passes through the inside of the isolation drum 39, the odor in the smoke cannot be purified.

[0042] The outer diameter of the third bevel gear 34 is smaller than that of the second bevel gear 33. Due to the difference in outer diameter, when the collar 37 rotates one revolution with the connecting rod 38, the third bevel gear 34 can rotate multiple revolutions with the rotating rod 35.

[0043] Working principle: When the motor 14 operates and triggers the gear differential 15 through two meshing first bevel gears 17, it enables the impeller 16 to rotate rapidly and send air upward. That is, the left flared section 12 draws in air and the right flared section 12 blows air out. The gas discharged from the right flared section 12 is guided by the conical diverter 13 and blows the smoke generated by laser cutting towards the port of the left flared section 12 in the form of a wind ring. This allows the left flared section 12 to absorb the smoke more fully and effectively and transport the smoke upward.

[0044] As the smoke is conveyed upward through the sleeve 11, solid particulate impurities in the smoke will adhere to the lower end face of the filter element 20. That is, the filter element 20 can isolate solid impurities in the smoke, while the gas continues to be conveyed upward. When the gas passes through the vent 40 and through the activated carbon box 31, the activated carbon granules placed inside the activated carbon box 31 absorb and purify the odor in the gas, and then discharge it through the flared part 12 on the right. Through the above-mentioned gas circulation to filter and purify the smoke, the smoke can be effectively absorbed and treated.

[0045] When the electric motor 14 drives the gear differential 15, it will simultaneously rotate the rotating ring 19, the fixed plate 18, and the first rotating shaft 23. When the filter element 20 rotates, the upper edge of the opening 22 can scrape off the solid impurities adhering to the lower end face of the filter element 20 until the solid impurities fall into the inside of the straight cylinder 21. Under the rotation of the first rotating shaft 23 with the spiral blade 24, the solid impurities can be transferred towards the magnetic receiving box 26. In this solution, it is also considered that the solid impurities have a certain degree of adhesion. In order to ensure that the solid impurities can effectively fall into the inside of the magnetic receiving box 26, the second rotating shaft 42 can lift the crank 29 through the cam 30 and then release it instantly when rotating. The elastic reset of the spring 27 allows the piston plate 41 to move down quickly to compress the gas. When the high-pressure airflow rushes downward, it can impact the solid impurities adhering to the surface of the spiral blade 24, so that the solid impurities can quickly fall into the inside of the magnetic receiving box 26.

[0046] In this design, when the input end of the gear differential 15 rotates with the collar 37, it allows several rotating rods 35 to revolve around the central axis and rotate on their own axis. This causes the actuating plate 36 to continuously move the activated carbon granules stacked in the activated carbon box 31, allowing the activated carbon granules inside the activated carbon box 31 to continuously change position. This ensures that the activated carbon granules can evenly absorb odor components in the gas, preventing the activated carbon granules in the lower layer from being saturated while those in the middle and upper layers are not yet saturated when the activated carbon granules are replaced later. This improves the utilization efficiency of the activated carbon granules.

Claims

1. A five-axis laser cutting apparatus for dental model manufacturing, characterized by, The utility model relates to a laser cutting device, including: Equipment rack (1), the sliding frame (2) of equipment rack (1) is assembled above, transport equipment (7) and the feeding and discharging mechanical arm (8), the upper end surface sliding frame of sliding frame (2) is equipped with five axle machine table (4), the upper end surface fixed setting of sliding frame (2) has portal frame (3), and the portal frame (3) is equipped with fixed frame (6) slidingly, the upper end surface fixed frame of fixed frame (6) is equipped with laser lens, and the output end of mirror head is downward, the upper end surface of portal frame (3) still is fixedly provided with laser generator (5); Further including: Circulating suction unit for suction treatment to the smoke generated by laser cutting, the circulating suction unit is arranged outside the fixed frame (6), the circulating suction unit includes the U type pipe (10) fixed outside the fixed frame (6), the two lower ports of U type pipe (10) are opposite distribution, the two ports of U type pipe (10) are all fixedly connected with the flared portion (12) of assembly, and the inside concentric fixed frame of one flared portion (12) is equipped with the tapered shunt cylinder (13); Odor adsorption unit for adsorbing and purifying the odor in the smoke, the odor adsorption unit is arranged inside the circulating suction unit; The circulating suction unit further includes a sleeve (11) fixedly connected in the middle part of the U-shaped pipe (10), the inside of the sleeve (11) is fixedly provided with a gear differential (15), the output end of the gear differential (15) is fixedly provided with an impeller (16), the outer wall of the sleeve (11) is fixedly provided with an electric motor (14), and the output end of the electric motor (14) is fixedly provided with a second shaft (42), the outer surface of the second shaft (42) and the outer surface of the input end of the gear differential (15) are both fixedly provided with a first bevel gear (17), and the two first bevel gears (17) are meshed with each other, the inside of the sleeve (11) is further provided with a filter component, and the filter component is used for isolating solid impurities in the smoke; The filter component includes a fixed disc (18) below the impeller (16), the inside of the fixed disc (18) is rotatably provided with a rotating ring (19), and the inside of the rotating ring (19) is fixed to the input end of the gear differential (15) through a support, and the lower end surface of the rotating ring (19) is fixedly provided with a filter element (20). The interior of the sleeve (11) is further provided with a scraping component, the interior of the scraping component is further provided with an auxiliary discharging piece, the scraping component comprises a straight cylinder (21) located at the lower end surface of the fixed disc (18), one end of the straight cylinder (21) is fixedly penetrated through the sleeve (11), and the other end of the straight cylinder (21) is located at the center position of the rotating ring (19), an opening part (22) is formed in the upper part of the end of the straight cylinder (21) close to the center of the rotating ring (19), the upper end edge of the opening part (22) is tangent to the lower end surface of the filter core (20), a first rotating shaft (23) is rotatably arranged in the interior of the straight cylinder (21), and a spiral blade (24) is fixedly arranged on the outer surface of the first rotating shaft (23), and the output end of the motor (14) and one end of the first rotating shaft (23) protruding out of the straight cylinder (21) are in transmission connection.

2. A five-axis laser cutting apparatus for dental model manufacturing according to claim 1, characterized in that: The upper end edge of the opening part (22) is serrated.

3. A five-axis laser cutting apparatus for dental model manufacturing as claimed in claim 1, wherein: The auxiliary discharging piece comprises a discharging port formed in the lower end surface of the straight cylinder (21), the lower end surface of the discharging port is further provided with a detachable magnetic attraction receiving box (26), a sealing cylinder (25) is fixedly and communicatively arranged on the upper end surface of the straight cylinder (21), a piston disc (41) is slidably arranged in the interior of the sealing cylinder (25), a piston rod (28) is fixedly arranged on the upper end surface of the piston disc (41) and slidably penetrates through the sealing cylinder (25), a spring (27) is further arranged between the upper end surface of the piston disc (41) and the sealing cylinder (25), a curved rod (29) is fixedly arranged on the top of the piston rod (28), and the outer surface of the second rotating shaft (42) is fixedly provided with a cam (30) for upward pushing and extruding the curved rod (29).

4. A five-axis laser cutting apparatus for dental model manufacturing as claimed in claim 1, wherein: The odor adsorption unit comprises an activated carbon box (31) located above the fixed disc (18), the activated carbon box (31) is fixed in the interior of the sleeve (11), a plurality of air holes (40) are formed in the upper and lower end surfaces of the sleeve (11), a plurality of activated carbon particles are placed in the interior of the activated carbon box (31), a fixed cylinder (32) is fixedly arranged at the center of the activated carbon box (31), the fixed cylinder (32) is rotatably arranged on the outer surface of the input end of the gear differential (15), an isolation rotating cylinder (39) is rotatably arranged in the interior of the activated carbon box (31), the interior of the isolation rotating cylinder (39) is further provided with a rotating part, and the rotating part is used for rotating the activated carbon particles in the interior of the activated carbon box (31).

5. A five-axis laser cutting apparatus for dental model fabrication as claimed in claim 4, wherein: The dialing rotating part comprises a plurality of rotating rods (35) which are equidistantly distributed in a circle and are rotatably arranged inside the isolation rotating drum (39), the inside of the fixed drum (32) is provided with a partition layer, one end of the partition layer is fixedly provided with a second bevel gear (33), the outer surface of the input end of the gear differential (15) is further fixedly sleeved with a sleeve ring (37), the sleeve ring (37) is distributed in the middle of the partition layer, the end of the rotating rod (35) which extends into the inside of the isolation rotating drum (39) is rotatably arranged with a connecting rod (38), the connecting rod (38) is fixed with the sleeve ring (37), the outer surface of each rotating rod (35) is further fixedly sleeved with a third bevel gear (34) which is in movable engagement with the second bevel gear (33), and the outer surface of each rotating rod (35) is further fixedly provided with a dialing plate (36).

6. A five-axis laser cutting apparatus for dental model fabrication as claimed in claim 5, wherein: The air holes (40) are not distributed on the upper and lower end surfaces of the isolation rotating drum (39).

7. A five-axis laser cutting apparatus for dental model fabrication as claimed in claim 5, wherein: The outer diameter of the third bevel gear (34) is smaller than the outer diameter of the second bevel gear (33).

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