A self-cleaning denture 3D printer

Abstract

The present invention discloses a self-cleaning denture 3D printer, comprising a supporting base plate, the upper surface of the supporting base plate is fixedly connected to a printer frame, the inner wall of the printer frame is fixedly connected to a partition plate, the surface of the partition plate is embedded with a printer body, the inner bottom wall of the printer frame is respectively fixedly connected to a cubic frame and a dust collection box, the interior of the cubic frame is provided with a dust collection slide extending to the right side wall of the cubic frame, the upper edge of the cubic frame is provided with a sliding roller, and the outer surface of the sliding roller is provided with a printing receiving plate. The self-cleaning denture 3D printer, by providing a servo motor, a crankshaft, a connecting rod and a connecting rod, and embedding a metal mesh on the surface of the printing receiving plate, can vibrate the excess powder on the surface of the printing base box into the dust collection slide, and finally enter the interior of the dust collection box, thereby achieving the purpose of collecting dust after the 3D printer prints.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, in particular to a self-cleaning denture 3D printer. Background Art

[0002] A 3D printer, also known as a three-dimensional printer, is a machine using cumulative manufacturing technology, that is, rapid prototyping technology. It is based on a digital model file and uses special wax materials, powdered metals, or plastics and other adhesive materials to print layers of adhesive materials to create three-dimensional objects.

[0003] In the existing production process, 3D printers are used to manufacture dentures. After the denture 3D printing is completed, the powder material accumulated on the surface of the denture needs to be cleaned. The existing technology uses manual cleaning, which is slow and reduces the productivity of the enterprise.

[0004] Therefore, we need a self-cleaning denture 3D printer. Summary of the invention

[0005] The object of the present invention is to provide a self-cleaning denture 3D printer to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a self-cleaning denture 3D printer, comprising a supporting base plate, the upper surface of the supporting base plate is fixedly connected to a printer frame, the inner wall of the printer frame is fixedly connected to a partition plate, the surface of the partition plate is embedded with a printer body, the inner bottom wall of the printer frame is respectively fixedly connected to a cubic frame and a dust collection box, the interior of the cubic frame is provided with a dust collection slide extending to the right side wall of the cubic frame, a sliding roller is provided at the upper edge of the cubic frame, the outer surface of the sliding roller is provided with a printing receiving plate, the surface of the printing receiving plate is embedded with a metal mesh, the right side wall of the printing receiving plate is fixedly connected to a connecting rod, the right end of the connecting rod is rotatably connected to a connecting rod, the right end of the printer frame is fixedly connected to a drive box, the inner top wall of the drive box is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a crankshaft, and the crankshaft is rotatably connected to the connecting rod through a collar.

[0007] Preferably, a shock-absorbing rubber pad is provided on the lower surface of the supporting base plate. The number of the shock-absorbing rubber pads is four, and the four shock-absorbing rubber pads are provided on the lower surface of the supporting base plate in a rectangular array.

[0008] Preferably, the left and right walls of the printing receiving plate are provided with two springs for auxiliary fixing, the other ends of the two springs are respectively fixedly connected to the inner left wall and the inner right wall of the printer frame, the upper surface of the printing receiving plate is fixedly connected with two fixing blocks, the two fixing blocks are symmetrically arranged on the upper surface of the printing receiving plate with the center line of the side surface of the printing receiving plate as the symmetry axis, the surfaces of the two fixing blocks are threadedly connected with threaded push rods, the opposite ends of the two threaded push rods are rotatably connected with anti-slip splints, and the opposite surfaces of the two anti-slip splints clamp the printing base box.

[0009] Preferably, the lower surface of the partition plate is fixedly connected with an auxiliary fixing plate and a lighting lamp, respectively, and the number of the auxiliary fixing plates and the lighting lamp is two. The two auxiliary fixing plates and the lighting lamp are symmetrically arranged on the lower surface of the partition plate with the midline of the front side of the partition plate as the symmetry axis, and the lower surfaces of the two auxiliary fixing plates are fixedly connected with sliding rollers identical to the surface of the cube frame.

[0010] Preferably, a left side wall of the printer frame is fixedly connected to a U-shaped frame, an inner left wall of the U-shaped frame is fixedly connected to an electric telescopic rod, and a telescopic end of the electric telescopic rod is fixedly connected to a support rod extending to the inner wall of the printer frame.

[0011] Preferably, a sealed door is provided on the front of the printer frame, a negative pressure machine is fixedly connected to the right side wall of the printer frame, the air inlet end of the negative pressure machine extends to the interior of the printer frame through an air suction duct, an air inlet duct is embedded in the inner rear wall of the printer frame, and dust filters are provided on the surfaces of the air suction duct and the air inlet duct.

[0012] Preferably, a vibration device is provided inside the cubic frame below the dust collection chute, and the vibration device includes an oscillation shell, an eccentric rotor, a first bearing, a servo rotor, a reducer, an absorption block, a second bearing, a monitoring device, and a connecting part; the oscillation shell is fixed to the inside of the cubic frame through the connecting part, and the connecting part is a second clamp and a first clamp arranged on the outer side wall of the oscillation shell, and the first clamp is arranged below the second clamp, and the eccentric rotor, the first bearing, the servo rotor, the reducer, the absorption block, the second bearing, and the monitoring device are all arranged inside the oscillation shell, and the interior of the oscillation shell is divided into a first cavity, a second cavity, and a third cavity, the first cavity is arranged above the second cavity and separated by the first bearing, the second cavity is arranged above the third cavity and separated by the second bearing, and a cavity is arranged in the first cavity The reducer and the servo rotor are provided, the reducer is connected to the drive box, the reducer is connected to the servo rotor, and is used to control the rotation speed of the servo rotor. The monitoring device is also provided in the first cavity, the monitoring device is connected to the outside of the oscillation shell, and the monitoring device is connected to the reducer; the eccentric rotor passes through the second cavity and its two ends are connected to the first cavity and the third cavity. The upper part of the eccentric rotor is fixed to the inside of the oscillation shell through the first bearing and extends into the first cavity, and the upper end of the eccentric rotor is connected to the servo rotor; the absorption block and the limit sleeve are provided in the second cavity, the absorption block is arranged below the first bearing and forms a resonance cavity with the eccentric rotor, and the limit sleeve is arranged below the resonance cavity; the lower part of the eccentric rotor is fixed to the oscillation shell through the second bearing and extends into the third cavity.

[0013] Preferably, a negative pressure particle filter device is provided in the air suction duct, and the negative pressure particle filter device includes a first air duct, a second air duct, and an air filter device. The first air duct is connected to the negative pressure machine, and the second air duct is connected to the inside of the printer frame. The air filter device is arranged between the first air duct and the second air duct, and separates the first air duct from the second air duct. When the negative pressure machine is running, air carrying powder enters from the second air duct and flows through the air filter device to reach the first air duct. A reverse anti-blocking device is provided inside the air filter device. When powder blocks the air filter device, the sealing valve squeezed by the closed-circuit spring in the reverse anti-blocking device is sucked up by the suction force of the negative pressure. When the negative pressure suction force is large enough When the air filter is in the air filter housing, the air inlet is blocked, and the negative pressure on the side of the air filter device located in the first air channel increases. The sealing valve can be opened to allow the gas to flow from the first channel through the reverse anti-blocking device to the first air channel. The air flowing through the reverse anti-blocking device will exert a force on the reverse anti-blocking device, thereby cleaning the air filter device.

[0014] Preferably, the reverse anti-blocking device is an air nozzle which is conical and larger at the top and smaller at the bottom and can rotate around a rotation axis. A support shaft for rotation support is provided at the bottom of the reverse anti-blocking device, and the support shaft is connected to the inner bottom surface of the air filter device. The first pipeline is arranged at the lower end of the closed-circuit pipe and can rotate in the closed-circuit pipe. The closed-circuit spring and the sealing valve are arranged at the other end of the closed-circuit pipe. A plurality of through holes are provided on the conical surface of the reverse anti-blocking device.

[0015] Preferably, the air filter device is conical and wraps the reverse anti-blocking device inside, the conical surface of the air filter device is provided with a filter screen, and the upper and lower ends of the cone are arranged in a filter cover, the filter cover comprises an upper filter cover and a lower filter cover, the upper filter cover is arranged at the upper end of the air filter device, and the lower filter cover is arranged at the lower end of the air filter device, the upper filter cover is provided with a pipeline wrapping port with an inner diameter equal to the outer diameter of the first pipeline, the pipeline wrapping port wraps the first pipeline therein and the first pipeline can rotate in the pipeline wrapping port, the left side of the pipeline wrapping port is provided with a first airway inlet connected to the first airway, and the lower filter cover is provided with a support bearing slot corresponding to the support shaft.

[0016] Beneficial Effects

[0017] The present invention provides a self-cleaning denture 3D printer, which has the following beneficial effects:

[0018] 1. The self-cleaning denture 3D printer can perform laser 3D printing on the surface of a printing base box by setting a printer body. By setting a servo motor, a crankshaft, a connecting rod and a connecting rod, and embedding a metal mesh on the surface of a printing receiving plate, excess powder on the surface of the printing base box can be vibrated into a dust collection chute and finally enter the interior of a dust collection box, thereby achieving the purpose of collecting dust after the 3D printer prints.

[0019] 2. The self-cleaning denture 3D printer can generate negative pressure in the printer frame by arranging a negative pressure machine and an air inlet duct, thereby accelerating the internal dust to fall into the dust collection box. The printing base box can be fixed by arranging a fixing block, a threaded ejector rod and an anti-slip splint. The printing receiving plate can be auxiliary fixed by arranging an electric telescopic rod and a support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0021] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 3 To print the schematic diagram of the right section structure of the docking plate;

[0023] Figure 4 It is a front view structural schematic diagram of the present invention;

[0024] Figure 5 is a schematic diagram of the internal structure of the vibration device;

[0025] Figure 6 Schematic diagram of the internal structure of the negative pressure particulate matter filtration device.

[0026] In the figure: 1 supporting base plate, 2 printer frame, 3 partition plate, 4 printer body, 5 cubic frame, 51 oscillating housing, 511 first clamp, 512 second clamp, 52 reducer, 53 servo rotor, 54 first bearing, 55 eccentric rotor, 56 absorption block, 57 resonant cavity, 58 limit sleeve, 59 second bearing, 510 monitoring device, 6 dust collection box, 7 sliding roller, 8 printing receiving plate, 9 metal mesh, 10 connecting rod, 11 servo motor, 12 crankshaft, 13 fixed block, 14 threaded ejector rod, 15 anti-slip splint, 16 printing base box, 17 auxiliary fixing plate, 18 electric telescopic rod, 19 push rod, 20 sealing door, 21 negative pressure machine, 22 negative pressure particle filter device, 221 first airway, 222 second airway, 223 air filter device, 224 reverse anti-blocking device, 225 first pipeline, 226 sealing valve, 227 closed-circuit spring, 228 first airway air inlet, 229 through hole, 2210 closed-circuit pipeline, 2211 filter screen, 2212 filter cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a technical solution: a self-cleaning denture 3D printer, comprising a supporting base plate 1, the lower surface of the supporting base plate 1 is provided with shock-absorbing rubber pads, the number of the shock-absorbing rubber pads is four, and the four shock-absorbing rubber pads are arranged in a rectangular array on the lower surface of the supporting base plate 1.

[0029] The upper surface of the supporting base plate 1 is fixedly connected with a printer frame 2, the inner wall of the printer frame 2 is fixedly connected with a partition plate 3, the surface of the partition plate 3 is embedded with a printer body 4, the inner bottom wall of the printer frame 2 is respectively fixedly connected with a cubic frame 5 and a dust collection box 6, the interior of the cubic frame 5 is provided with a dust collection slide extending to the right side wall of the cubic frame 5, a sliding roller 7 is provided at the upper edge of the cubic frame 5, the outer surface of the sliding roller 7 is provided with a printing receiving plate 8, the surface of the printing receiving plate 8 is embedded with a metal mesh 9, the left side wall and the right side wall of the printing receiving plate 8 are both provided with two springs for auxiliary fixation, and the other ends of the two springs are respectively connected to the printer The inner left wall and the inner right wall of the frame 2 are fixedly connected, and two fixed blocks 13 are fixedly connected to the upper surface of the printing receiving plate 8. The two fixed blocks 13 are symmetrically arranged on the upper surface of the printing receiving plate 8 with the midline of the side surface of the printing receiving plate 8 as the symmetry axis. The surfaces of the two fixed blocks 13 are threadedly connected with threaded push rods 14, and the opposite ends of the two threaded push rods 14 are rotatably connected with anti-slip splints 15. The opposite surfaces of the two anti-slip splints 15 clamp a printing base box 16. By setting the printer body 4, laser 3D printing can be performed on the surface of the printing base box 16. By setting the fixed blocks 13, the threaded push rods 14 and the anti-slip splints 15, the printing base box 16 can be fixed.

[0030] The lower surface of the partition plate 3 is fixedly connected with an auxiliary fixing plate 17 and a lighting lamp, respectively. There are two auxiliary fixing plates 17 and two lighting lamps. The two auxiliary fixing plates 17 and the lighting lamp are symmetrically arranged on the lower surface of the partition plate 3 with the midline of the front side of the partition plate 3 as the symmetry axis. The lower surfaces of the two auxiliary fixing plates 17 are fixedly connected with sliding rollers 7 that are the same as the surface of the cube frame 5.

[0031] A connecting rod 10 is fixedly connected to the right side wall of the printing receiving plate 8, and the right end of the connecting rod 10 is rotatably connected to a connecting rod. The right end of the printer frame 2 is fixedly connected to a driving box, and the inner top wall of the driving box is fixedly connected to a servo motor 11. The output end of the servo motor 11 is fixedly connected to a crankshaft 12, and the crankshaft 12 is rotatably connected to the connecting rod through a collar. By arranging the servo motor 11, the crankshaft 12, the connecting rod and the connecting rod 10, and embedding a metal mesh 9 on the surface of the printing receiving plate 8, excess powder on the surface of the printing base box 16 can be vibrated into the dust collection chute and finally enter the interior of the dust collection box 6, thereby achieving the purpose of collecting dust after printing by the 3D printer.

[0032] The left side wall of the printer frame 2 is fixedly connected to a U-shaped frame, the inner left wall of the U-shaped frame is fixedly connected to an electric telescopic rod 18, and the telescopic end of the electric telescopic rod 18 is fixedly connected to a support rod 19 extending to the inner wall of the printer frame 2. By arranging the electric telescopic rod 18 and the support rod 19, the print receiving plate 8 can be auxiliary fixed by the support rod 19.

[0033] A sealed door 20 is provided on the front of the printer frame 2, and a negative pressure machine 21 is fixedly connected to the right side wall of the printer frame 2. The air inlet end of the negative pressure machine 21 extends to the interior of the printer frame 2 through an air suction duct. An air inlet duct is embedded in the inner rear wall of the printer frame 2. Dust-proof filters are provided on the surfaces of the air suction duct and the air inlet duct. By providing the negative pressure machine 21 and the air inlet duct, negative pressure can be generated in the printer frame 2, thereby accelerating the internal dust to fall into the dust collection box 6.

[0034] Working principle: When the self-cleaning denture 3D printer is in use, the entire device is electrically connected to an external power supply, the sealing door 20 is opened, and the threaded push rod 14 is used to fix the printing base box 16 on the upper surface of the metal mesh 9. The electric telescopic rod 18 is extended, and under the action of the resistance of the push rod 19 and the unstarted servo motor 11 itself, the printing receiving plate 8 can be fixed to avoid shaking during laser printing. The sealing door 20 is closed, and the printer body 4 is controlled to perform 3D printing operations. After printing is completed, the electric telescopic rod 18 contracts and drives the push rod 19 to retract, and the servo motor 11 and the negative pressure machine 21 are started. The servo motor 11 drives the printing receiving plate 8 to shake, thereby shaking the excess dust on the surface of the printing base box 16 into the dust collection chute, and gradually falls into the interior of the dust collection box 6 under the action of the negative pressure airflow, thereby completing the purpose of automatic cleaning of the denture 3D printer.

[0035] In one embodiment, a vibration device is provided inside the cubic frame 5 below the dust collection chute, and the vibration device includes an oscillation shell 51, an eccentric rotor 55, a first bearing 54, a servo rotor 53, a reducer 52, an absorption block 56, a second bearing 59, a monitoring device 510, and a connecting portion; the oscillation shell 51 is fixed to the inside of the cubic frame 5 through the connecting portion, and the connecting portion is a second clamp 512 and a first clamp 511 provided on the outer wall of the oscillation shell 51, and the first clamp 511 is provided below the second clamp 512, and the eccentric rotor 55, the first bearing 54, the servo rotor 53, the reducer 52, the absorption block 56, the second bearing 59, and the monitoring device 510 are all provided inside the oscillation shell 51, and the inside of the oscillation shell 51 is divided into a first cavity, a second cavity, and a third cavity, the first cavity is provided above the second cavity and separated by the first bearing 54, the second cavity is provided above the third cavity and separated by the second bearing 59, and the first cavity is provided inside the third cavity. The reducer 52 and the servo rotor 53 are arranged, the reducer 52 is connected to the driving box, the reducer 52 is connected to the servo rotor 53, and is used to control the rotation speed of the servo rotor 53. The monitoring device 510 is also arranged in the first cavity, the monitoring device 510 is connected to the outside of the oscillation housing 51, and the monitoring device 510 is connected to the reducer 52; the eccentric rotor 55 passes through the second cavity and its two ends are connected to the first cavity and the third cavity, and the upper part of the eccentric rotor 55 is connected to the third cavity. The first bearing 54 is fixed inside the oscillation housing 51 and extends into the first cavity. The upper end of the eccentric rotor 55 is connected to the servo rotor 53. The absorption block 56 and the limiting sleeve 58 are arranged in the second cavity. The absorption block 56 is arranged below the first bearing 54 and forms a resonance cavity 57 with the eccentric rotor 55. The limiting sleeve 58 is arranged below the resonance cavity 57. The lower part of the eccentric rotor 55 is fixed in the oscillation housing 51 through the second bearing 59 and extends into the third cavity.

[0036] The working principle of the above technical solution is as follows: when the self-cleaning mode is enabled, the eccentric rotor 55 inside the oscillation housing 51 will rotate driven by the servo rotor 53. Because the eccentric rotor 55 is an asymmetric structure and its center of gravity is not on the central rotation axis, the oscillation housing 51 will be driven to shake during the rotation, thereby driving the three-dimensional frame 5 to vibrate. When the eccentric rotor 55 rotates, the first bearing 54 and the second bearing 59 will limit its position. A resonance cavity 57 is formed between the absorption block 56 inside the second cavity and the eccentric rotor 55 to reduce the resonance frequency between the vibration device and the three-dimensional frame 5, so as to reduce the sound pollution caused by the vibration. At the same time, the limiter located below the resonance cavity 57 The sleeve 58 will also limit the displacement of the eccentric rotor 55. When the decibel value measured by the monitoring device 510 is higher than the preset value, the reducer 52 will reduce the rotation speed of the servo rotor 53, thereby reducing the rotation speed of the eccentric rotor 55 to reduce sound pollution; when the decibel value measured by the monitoring device 510 is lower than the preset value, the reducer 52 will increase the rotation speed of the servo rotor 53, thereby increasing the rotation speed of the eccentric rotor 55 and increasing the vibration frequency. In order to prevent relative displacement between the vibration device and the cubic frame 5 due to vibration, a second clamp 512 and a first clamp 511 are set on the outer wall of the oscillation shell 51 to limit the displacement of the vibration device.

[0037] The beneficial effect of the above technical solution: through the design of the above structure, the cube frame 5 in the self-cleaning mode can be vibrated to prevent powder from hanging on the wall. Sound pollution is inevitable during the vibration process, so a physical method is first used to reduce the resonant frequency between the vibration device and the cube frame 5 through the resonance cavity 57 to reduce the sound. However, as the speed of the servo rotor 53 increases, the resonant frequency will tend to synchronize to form a resonance to increase the sound. At this time, the sound is monitored by the monitoring device 510. When the decibel value exceeds the set value, the drive box will control the reducer 52 to slow down the servo rotor 53 to achieve the effect of reducing the sound, and the first bearing 54 and the second bearing 59 are used to limit the horizontal displacement, and the limit sleeve 58 is used to limit the vertical displacement to prevent the eccentric rotor 55 from positional displacement due to long-term use. The interior of the vibration device can remain stable while the second clamp 512 and the first clamp 511 are used to limit the displacement between the vibration device and the cube frame 5 to prevent the vibration device from displacing with the cube frame 5 during the vibration process.

[0038] In one embodiment, a negative pressure particle filter device 22 is provided in the suction duct, and the negative pressure particle filter device 22 includes a first air duct 221, a second air duct 222, and an air filter device 223. The first air duct 221 is communicated with the negative pressure machine 21, and the second air duct 222 is communicated with the interior of the printer frame 2. The air filter device 223 is arranged between the first air duct 221 and the second air duct 222, and separates the first air duct 221 from the second air duct 222. When the negative pressure machine 21 is running, the air carrying powder enters from the second air duct 222 and flows through the air filter device 223 to reach the first air duct 221. A reverse anti-blocking device 224 is provided inside the air filter device 223. When the powder blocks the air filter device 223, the sealing valve 226 squeezed by the closed-circuit spring 227 in the reverse anti-blocking device 224 is sucked up by the suction force of the negative pressure. When the negative pressure suction force is sufficient When the pressure is large enough, the sealing valve 226 will overcome the elastic force of the closed-circuit spring 227 and move from the closed position to the open position. The sealing valve 226 is connected to the closed-circuit spring 227. The closed-circuit spring 227 is arranged in a closed-circuit pipe 2210 connected to the top of the reverse anti-blocking device 224. The closed-circuit pipe 2210 is connected to the reverse anti-blocking device 224 through a first pipe 225. The closed-circuit pipe 2210 is arranged inside the first airway 221 and connected to the outside. When there is too much filtered powder, the air intake is blocked, resulting in an increase in the negative pressure on the side of the air filter device 223 located in the first airway 221. The sealing valve 226 can be opened to allow the gas to flow from the first pipe 225 through the reverse anti-blocking device 224 to the first airway 221. The air flowing through the reverse anti-blocking device 224 will exert a force on the reverse anti-blocking device 224, thereby cleaning the air filter device 223.

[0039] The working principle of the above technical solution is as follows: when the self-cleaning mode is turned on, the negative pressure machine 21 is turned on, and the air flow will flow from the printer frame 2 through the second air channel 222, and then be filtered by the air filter device 223 between the second air channel 222 and the first air channel 221. The gas after filtering out the powder will flow through the first air channel 221 to reach the negative pressure machine 21, completing the entire suction and filtering process. During the suction process, when the air filter device 223 is blocked by powder, the reverse anti-blocking device 224 will be triggered. Because the negative pressure on one side of the first air channel 221 becomes larger after the air filter device 223 is blocked, the negative pressure in the closed-circuit pipe 2210 also increases accordingly. When the negative pressure is large enough, the suction force will cause the sealing valve 226 to overcome the pressure of the closed-circuit spring 227. The force is sucked up, and after the sealing valve 226 is sucked up, air rushes in from the opening of the closed-circuit pipe 2210, flows through the first pipe 225 to reach the reverse anti-blocking device 224 and drives the reverse anti-blocking device 224 to rotate, so that the airflow flowing through the reverse anti-blocking device 224 is dispersed, and then flows to the first airway 221 through the reverse anti-blocking device 224. When circulating in the reverse direction, the gas will exert a reverse thrust on the inner side of the air filter device 223, and blow off the powder attached to and blocked on the air filter device 223 to achieve the cleaning effect. After the attached powder is blown off, the sealing valve 226 is pushed back to its original position by the closed-circuit spring 227 to restore the closed-circuit pipe 2210 to be airtight, and the gas will continue to flow from the second airway 222 to the first airway 221 to complete the filtering task.

[0040] The beneficial effects of the above technical solution: through the design of the above structure, when the air filter 223 is blocked, the negative pressure machine 21 and the air filter 223 will not be damaged due to the excessive negative pressure in the first air channel 221. The size of the negative pressure can be adjusted by adjusting the tightness and elasticity of the closed-circuit spring 227. When the sealing valve 226 is opened, the gas will clean the air filter 223 when flowing through the reverse anti-blocking device 224, and blow off the attached powder. After the powder is blown away, the first air channel 221 and the second air channel 222 are connected again, and the sealing valve 226 is restored to its original position by the thrust of the closed-circuit spring 227, and the closed-circuit pipe 2210 is sealed, so that the gas in the second pipe 222 can continue to be filtered, thereby realizing the self-cleaning of the denture 3D printer and the self-cleaning of the air filter 223.

[0041] In one embodiment, the reverse anti-blocking device 224 is an air nozzle that is conical and larger at the top and smaller at the bottom and can rotate around a rotation axis. A support shaft for rotation support is provided at the bottom of the reverse anti-blocking device 224, and the support shaft is connected to the inner bottom surface of the air filter device 223. The first pipeline 225 is arranged at the lower end of the closed-circuit pipe 2210 and can rotate in the closed-circuit pipe 2210. The closed-circuit spring 227 and the sealing valve 226 are arranged at the other end of the closed-circuit pipe 2210. A plurality of through holes 229 are provided on the conical surface of the reverse anti-blocking device 224.

[0042] The working principle of the above technical solution: the conical design of the reverse anti-blocking device 224 can make the air flowing in from the closed-circuit pipe 2210 form a cyclone in the cone. The rotation of the gas can drive the reverse anti-blocking device 224 to rotate. When the reverse anti-blocking device 224 rotates, the air will also flow through multiple through holes 229. Because the flow area suddenly becomes smaller, the air flow rate is accelerated, which will apply a greater reverse thrust to the air filter device 223, and the air filter device 223 can be better cleaned after the rotation.

[0043] Beneficial effects of the above technical solution: through the design of the above structure, the air flowing into the closed-circuit pipeline 2210 can be pressurized and rotated, thereby increasing the cleaning ability of the air filter device 223.

[0044] In one embodiment, the air filter device 223 is conical and wraps the reverse anti-blocking device 224 inside. The conical surface of the air filter device 223 is provided with a filter screen 2211, and the upper and lower ends of the cone are arranged in the filter cover 2212. The filter cover 2212 includes an upper filter cover and a lower filter cover. The upper filter cover is arranged at the upper end of the air filter device 223, and the lower filter cover is arranged at the lower end of the air filter device 223. The upper filter cover is provided with a pipeline wrapping port with an inner diameter equal to the outer diameter of the first pipeline 225. The pipeline wrapping port wraps the first pipeline 225 therein and the first pipeline 225 can rotate in the pipeline wrapping port. The left side of the pipeline wrapping port is provided with a first air duct inlet 228 connected to the first air duct 221, and the lower filter cover is provided with a support bearing slot corresponding to the support shaft.

[0045] The working principle of the above technical solution is: the filter cover 2212 wraps the air filter device 223 as a whole, and the filter screen 2211 arranged on the conical surface of the air filter device 223 is used to filter the air containing powder. The conical design with a larger top and a smaller bottom allows the adsorbed powder to fall off due to gravity during filtration, reducing the risk of blockage. The lower filter cover is designed with a slot corresponding to the support shaft, which can support the reverse anti-blocking device 224. The upper filter cover divides the air circulation path into two, one is a closed-circuit pipeline 2210 connected to the first pipeline 225, which wraps the first pipeline 225 through the pipeline wrapping port and provides displacement restriction for the rotation of the first pipeline 225, and the other is the first airway 221 connected to the first airway inlet 228 located on the left side of the pipeline wrapping port.

[0046] The beneficial effects of the above technical solution are as follows: through the design of the above structure, the air filter device 223 is sealed to prevent powder from passing through the gaps, and the filter screen 2211 is used to filter the powder. The part above the air filter device 223 is formed into a bypass selection system through the design of the filter cover, and the bypass selection system cooperates with the reverse anti-blocking transposition 224 to realize the self-cleaning function after blockage.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning denture 3D printer, comprising a support base plate (1), characterized in that: The upper surface of the supporting base plate (1) is fixedly connected to a printer frame (2), the inner wall of the printer frame (2) is fixedly connected to a partition plate (3), the surface of the partition plate (3) is embedded with a printer body (4), the inner bottom wall of the printer frame (2) is respectively fixedly connected to a cubic frame (5) and a dust collection box (6), the interior of the cubic frame (5) is provided with a dust collection slide extending to the right side wall of the cubic frame (5), and the upper edge of the cubic frame (5) is provided with a sliding roller (7), the sliding roller The outer surface of the wheel (7) is provided with a printing receiving plate (8), the surface of the printing receiving plate (8) is embedded with a metal mesh (9), the right side wall of the printing receiving plate (8) is fixedly connected with a connecting rod (10), the right end of the connecting rod (10) is rotatably connected with a connecting rod, the right end of the printer frame (2) is fixedly connected with a driving box, the inner top wall of the driving box is fixedly connected with a servo motor (11), the output end of the servo motor (11) is fixedly connected with a crankshaft (12), and the crankshaft (12) is rotatably connected with the connecting rod through a sleeve ring; The right side wall of the printer frame (2) is fixedly connected with a negative pressure machine (21), the air inlet end of the negative pressure machine (21) extends to the inside of the printer frame (2) through an air suction duct, an air inlet duct is embedded in the inner rear wall of the printer frame (2), and dust-proof filters are provided on the surfaces of the air suction duct and the air inlet duct; A negative pressure particle filter device (22) is provided in the air suction duct, and the negative pressure particle filter device (22) comprises a first air duct (221), a second air duct (222), and an air filter device (223), wherein the first air duct (221) is connected to the negative pressure machine (21), the second air duct (222) is connected to the interior of the printer frame (2), and the air filter device (223) is arranged between the first air duct (221) and the second air duct (222), and the first air duct (221) and the second air duct (222) are connected to each other. The second air passage (222) is separated, and when the negative pressure machine (21) is in operation, the air containing powder enters from the second air passage (222) and flows through the air filter device (223) before reaching the first air passage (221). A reverse anti-blocking device (224) is provided inside the air filter device (223). When the powder blocks the air filter device (223), the sealing valve (226) squeezed by the closed-circuit spring (227) in the reverse anti-blocking device (224) is sucked up by the suction force of the negative pressure. When the negative pressure suction force is sufficient, the reverse anti-blocking device (224) is sucked up by the sealing valve (226) squeezed by the closed-circuit spring (227). When the pressure is large, the sealing valve (226) will overcome the elastic force of the closed-circuit spring (227) and move from the closed position to the open position. The sealing valve (226) is connected to the closed-circuit spring (227). The closed-circuit spring (227) is arranged in a closed-circuit pipe (2210) which is connected to the upper side of the reverse anti-blocking device (224). The closed-circuit pipe (2210) is connected to the reverse anti-blocking device (224) through a first pipe (225). The closed-circuit pipe (2210) is arranged in the first airway (22 1) and is connected to the outside. When there is too much filtered powder, the air intake is blocked, resulting in an increase in negative pressure on the side of the air filter device (223) located at the first air passage (221). The sealing valve (226) can be opened to allow the gas to flow from the first pipeline (225) through the reverse anti-blocking device (224) to the first air passage (221). The air flowing through the reverse anti-blocking device (224) exerts a force on the reverse anti-blocking device (224), thereby cleaning the air filter device (223); The reverse anti-blocking device (224) is a conical air nozzle that is larger at the top and smaller at the bottom and can rotate around a rotation axis. A support shaft for rotation support is provided at the bottom of the reverse anti-blocking device (224), and the support shaft is connected to the inner bottom surface of the air filter device (223). The first pipeline (225) is arranged at the lower end of the closed-circuit pipeline (2210) and can rotate in the closed-circuit pipeline (2210). The closed-circuit spring (227) and the sealing valve (226) are arranged at the other end of the closed-circuit pipeline (2210). A plurality of through holes (229) are provided on the conical surface of the reverse anti-blocking device (224); The air filter device (223) is conical and wraps the reverse anti-blocking device (224) therein; a filter screen (2211) is provided on the conical surface of the air filter device (223); and the upper and lower ends of the cone are arranged in a filter cover (2212); the filter cover (2212) comprises an upper filter cover and a lower filter cover; the upper filter cover is arranged at the upper end of the air filter device (223); and the lower filter cover is arranged at the lower end of the air filter device (223); the upper filter cover is provided with a pipeline wrapping opening whose inner diameter is equal to the outer diameter of the first pipeline (225); the pipeline wrapping opening wraps the first pipeline (225) therein and the first pipeline (225) can rotate in the pipeline wrapping opening; a first airway inlet (228) connected to the first airway (221) is provided on the left side of the pipeline wrapping opening; and the lower filter cover is provided with a support bearing slot corresponding to the support shaft.

2. A self-cleaning denture 3D printer according to claim 1, characterized in that: The lower surface of the supporting base plate (1) is provided with shock-absorbing rubber pads, the number of which is four, and the four shock-absorbing rubber pads are arranged in a rectangular array on the lower surface of the supporting base plate (1).

3. A self-cleaning denture 3D printer according to claim 1, characterized in that: The left and right walls of the printing receiving plate (8) are both provided with two springs for auxiliary fixing, the other ends of the two springs are respectively fixedly connected to the inner left wall and the inner right wall of the printer frame (2), the upper surface of the printing receiving plate (8) is fixedly connected with two fixing blocks (13), the two fixing blocks (13) are symmetrically arranged on the upper surface of the printing receiving plate (8) with the center line of the side surface of the printing receiving plate (8) as the symmetry axis, the surfaces of the two fixing blocks (13) are both threadedly connected with threaded push rods (14), the opposite ends of the two threaded push rods (14) are both rotatably connected with anti-skid clamps (15), and the opposite surfaces of the two anti-skid clamps (15) clamp the printing base box (16).

4. A self-cleaning denture 3D printer according to claim 1, characterized in that: The lower surface of the partition plate (3) is respectively fixedly connected with an auxiliary fixing plate (17) and an illuminating lamp, the number of the auxiliary fixing plates (17) and the illuminating lamp is two, the two auxiliary fixing plates (17) and the illuminating lamp are symmetrically arranged on the lower surface of the partition plate (3) with the midline of the front surface of the partition plate (3) as the symmetry axis, and the lower surfaces of the two auxiliary fixing plates (17) are fixedly connected with sliding rollers (7) identical to the surface of the cubic frame (5).

5. The self-cleaning denture 3D printer according to claim 1, characterized in that: The left side wall of the printer frame (2) is fixedly connected to a U-shaped frame, the inner left wall of the U-shaped frame is fixedly connected to an electric telescopic rod (18), and the telescopic end of the electric telescopic rod (18) is fixedly connected to a support rod (19) extending to the inner wall of the printer frame (2).

6. The self-cleaning denture 3D printer according to claim 1, characterized in that: A vibration device is provided inside the cubic frame (5) below the dust collection slideway, the vibration device comprising an oscillating housing (51), an eccentric rotor (55), a first bearing (54), a servo rotor (53), a reducer (52), an absorption block (56), a second bearing (59), a monitoring device (510), and a connecting portion; the oscillating housing (51) is fixed inside the cubic frame (5) via the connecting portion, the connecting portion being a second clamping member (512) and a first clamping member (511) provided on the outer side wall of the oscillating housing (51), the first clamping member (511) being provided on the second Below the clamp (512), the eccentric rotor (55), the first bearing (54), the servo rotor (53), the reducer (52), the absorption block (56), the second bearing (59), and the monitoring device (510) are all arranged inside the oscillation housing (51). The interior of the oscillation housing (51) is divided into a first cavity, a second cavity, and a third cavity. The first cavity is arranged above the second cavity and is separated by the first bearing (54). The second cavity is arranged above the third cavity and is separated by the second bearing (59). The reducer (52) is arranged in the first cavity. The speed reducer (52) is connected to the servo rotor (53), the speed reducer (52) is connected to the driving box, the speed reducer (52) is connected to the servo rotor (53), and is used to control the rotation speed of the servo rotor (53); the first cavity is also provided with the monitoring device (510), the monitoring device (510) is connected to the outside of the oscillation housing (51), and the monitoring device (510) is connected to the speed reducer (52); the eccentric rotor (55) passes through the second cavity and its two ends are connected to the first cavity and the third cavity, and the upper part of the eccentric rotor (55) is connected to the first bearing (54) is fixed inside the oscillation housing (51) and extends into the first cavity, and the upper end of the eccentric rotor (55) is connected to the servo rotor (53); the absorption block (56) and the limiting sleeve (58) are arranged in the second cavity, the absorption block (56) is arranged below the first bearing (54) and forms a resonance cavity (57) with the eccentric rotor (55), and the limiting sleeve (58) is arranged below the resonance cavity (57); the lower part of the eccentric rotor (55) is fixed in the oscillation housing (51) through the second bearing (59) and extends into the third cavity.

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