Two-in-one non-contact drive assembly for processing 3D printing models

Abstract

The application discloses a two-in-one non-contact driving assembly for processing a 3D printing model, which comprises a first part configured to allow linear movement and a second part configured to allow rotation, the first part and the second part being hingedly connected with each other; an outer circumferential edge of the first part is provided with at least one first coupling member, and an outer circumferential edge of the second part is provided with at least two second coupling members; when the first part is driven to move linearly, the second part is driven by the first part to move linearly. The application has the beneficial effect that the non-contact magnetic transmission can be adapted to realize linear lifting and rotation, the 3D model can be washed, dried and solidified in rotation, the washing, drying and solidification are more sufficient, and the power part can be separated from the washing liquid.

Description

Technical Field

[0001] This invention relates to the technical field of 3D printed model post-processing machines. Background Technology

[0002] In 3D printing technology, 3D models printed using photosensitive resin as the 3D printing material generally require post-processing before use. Post-processing typically includes the following steps: 1. Cleaning the printing line; 2. Drying; 3. Curing.

[0003] Cleaning technologies include ultrasonic cleaning, agitation cleaning, direct rinsing, and brushing.

[0004] One technique involves a rotary drive device. A cleaning tank with internal stirring blades is placed on the drive device, and the stirring blades are rotated and stirred by a magnetic drive to achieve the cleaning purpose. The cleaning tank containing the 3D printed model is then removed from the drive device. A turntable is placed on the drive device, and the cleaned 3D printed model is dried by wiping it with a paper towel or by blowing it with a fan before being placed back on the turntable, which is directly driven by the rotary drive device. A cover is then placed on top, and ultraviolet light next to the turntable is used for secondary curing.

[0005] One technique involves cleaning the 3D printed model in an ultrasonic cleaner, drying it by blowing air with a fan or wiping it with a paper towel, and then placing the dried 3D printed model in a 3D printed model secondary curing chamber for ultraviolet secondary curing.

[0006] One technique involves manually placing the 3D printed model under running water to rinse it, then brushing off the liquid resin on the surface with a toothbrush. The model is then placed in sunlight to dry, and finally placed in a secondary curing chamber to be exposed to ultraviolet light.

[0007] Chinese patent application number 2021217790065, entitled "Post-processing device for photopolymer 3D printed models", describes a separate cleaning and curing product that does not have a drying function. Furthermore, the magnetic drive method makes it difficult to remove the stirring blades inside the cleaning container for cleaning, as the photosensitive resin will solidify and cause the stirring blades to get stuck. In addition, it requires excessive manual intervention during the cleaning, drying and curing processes.

[0008] Chinese patent application number 2019307340366, entitled "Photocuring Post-treatment Device," is also a cleaning and curing device, but it does not include drying and has a low degree of automation.

[0009] Chinese patent application number 2020200718499, entitled "A 3D Printed Model Cleaning Device", is also a cleaning and curing device, but it does not include drying, has a low degree of automation, and requires manual intervention.

[0010] Chinese patent application number 2021206870865, entitled "A Processing Device After 3D Printing," describes a technique that uses a water pump to remove cleaning fluid from the cleaning space. However, the cleaning fluid is corrosive, posing a risk of pump corrosion. Furthermore, the presence of solid particles in the cleaning fluid, and the potential for pump jamming due to the cured resin, especially after UV light exposure, further complicates the process. The UV light, emitted from the side walls, is blurred and reduced in intensity due to contamination from the cleaning fluid. Additionally, the relatively large distance between the fan and the 3D printed model hinders effective drying. The device also has drawbacks in cleaning the internal space, as the model does not rotate during drying and curing, potentially resulting in incomplete drying and curing in some areas.

[0011] The above-mentioned patented technologies cannot simultaneously solve the following technical problems: 1. Automation of cleaning, drying, and curing; 2. No rotation of the 3D model during cleaning, drying, and curing, meaning the post-processing effect needs improvement; 3. The power unit cannot directly contact the cleaning fluid to avoid its impact; 4. No contact with the cleaning fluid is required when placing / removing the model, and there is no need to throw the 3D model into the cleaning fluid, causing splashes or soiling the user's hands. The technology in this application is a two-in-one non-contact drive component for processing 3D printed models, designed to complement a product that solves the above four technical problems. Summary of the Invention

[0012] This invention provides a two-in-one non-contact drive component for processing 3D printed models. It can be adapted to non-contact magnetic transmission to achieve linear lifting and rotation, allowing the 3D model to be cleaned, dried and cured during rotation, making the cleaning, drying and curing more thorough, and can be used to isolate the power part from the cleaning liquid.

[0013] The technical solution adopted in this invention is:

[0014] A two-in-one non-contact drive assembly for processing 3D printed models includes a first component configured to allow linear movement and a second component configured to allow rotation, the first component and the second component being hinged to each other; the outer circumferential edge of the first component is provided with at least one first coupling element, and the outer circumferential edge of the second component is provided with at least two second coupling elements; when the first component is driven to move linearly, the second component performs linear movement under the drive of the first component.

[0015] The outer surface of the second component is provided with a support surface.

[0016] The linear movement direction of the first component is parallel to or coaxial with the rotation axis of the second component.

[0017] The first coupling element is configured as either a first magnet that allows magnetic coupling or a first metal block that allows magnetic coupling.

[0018] The second coupling element is configured as a second magnet that allows magnetic coupling, or as a second metal block that allows magnetic coupling.

[0019] The outer circumferential edge of the first component is provided with a first position for installation with the first coupling member; the outer circumferential edge of the second component is provided with a second position for installation with the second coupling member.

[0020] The first position is a first notch located on the outer circumferential edge of the first component; the second position is a second notch located on the outer circumferential edge of the second component.

[0021] The first coupling member is connected to the first notch by a first adhesive material layer, or the first coupling member is fixedly connected to the first notch by a first screw; the second coupling member is connected to the second notch by a second adhesive material layer, or the second coupling member is fixedly connected to the second notch by a second screw.

[0022] There is a gap between the first component and the second component.

[0023] The first component is in the shape of a disc, and the second component is in the shape of a disc. The first component and the second component are rotatably connected by a hinge structure. The hinge structure includes a rotating shaft and a bearing, with the bearing sleeved on the rotating shaft. The rotating shaft is fixedly connected to the first component / second component, and the bearing is fixedly connected to the second component / first component.

[0024] The first component has two cavities: a first cavity and a second cavity. The first cavity is located at the center of the upper surface of the first component and extends inward from the upper surface. The second cavity is located between the first cavity and the outer circumferential edge of the first component, and extends inward from the upper surface of the first component. The lower end of the second component has a shaft. A ball bearing is installed inside the first cavity, and the shaft is rotatably connected to the first component through the ball bearing. An electromagnet is installed on the shaft inside the first cavity. The second cavity contains an induction coil, a controller, a battery, a wireless transceiver module, and an ultraviolet LED light-emitting module. The controller is electrically connected to the induction coil, battery, wireless transceiver module, and ultraviolet LED light-emitting module. The induction coil and electromagnet are coupled to each other. When the shaft rotates, the electromagnet changes the magnetic flux of the induction coil, causing the induction coil to generate electricity. The second cavity has an opening, and a sealed waterproof cover is installed at the opening. Both the sealed waterproof cover and the second component are supported by transparent materials, allowing ultraviolet light emitted by the ultraviolet LED light-emitting module to pass through the sealed waterproof cover and the second component and illuminate the bottom of the three-dimensional model placed on the upper surface of the second component.

[0025] The post-processing unit for 3D printed models includes a central processing unit (CPU), a base, a cleaning container mounted on the base, a lifting device mounted on the base, a linear motion driver mounted on the lifting device, a rotary driver mounted on the lifting device, and a two-in-one non-contact drive assembly for processing 3D printed models. The two-in-one non-contact drive assembly is located inside the cleaning container. The linear motion driver drives the first component to move up and down inside the cleaning container; the linear motion driver and the first component are driven by magnetic coupling. The rotary driver drives the second component to rotate relative to the first component; the rotary driver and the second component are driven by magnetic coupling. The CPU is electrically connected to the lifting device and the rotary driver, and is also electrically connected to a wireless communication module that communicates with a wireless transceiver module. Only when the model is in a cured state does the CPU send control signals to the wireless transceiver module via the wireless communication module. After receiving the control signals, the controller drives the ultraviolet LED light-emitting module to emit light, illuminating the bottom of the rotating 3D model to prevent incomplete curing due to insufficient ultraviolet light penetration at the bottom.

[0026] The central processing unit drives the rotary actuator, which in turn drives a second coupling member on the second component. Driven by this coupling member, the second component rotates on the first component. The rotation of the second component causes the shaft to rotate, which in turn rotates the induction magnet on the shaft. This rotation changes the magnetic flux of the induction coil, creating an induction-generated electricity effect. The induction coil charges the battery via a controller. The controller receives control commands via a wireless transceiver module and then drives the ultraviolet LED light-emitting module to emit light. Ultraviolet light shines through the sealed waterproof cover onto the rotating second component and then through the second component onto the bottom of the 3D model. Because the 3D model placed on the second component is rotating, while the ultraviolet LED light-emitting module inside the first component is not rotating, the ultraviolet light can be more evenly distributed onto the bottom of the 3D model. The sealed waterproof cover seals the second cavity. Charging the battery via the rotation of the second component eliminates the need for an external power cord, avoiding interference with the lifting and lowering of the first component and the rotation of the second component.

[0027] The beneficial effects of this invention are: it can adapt to non-contact magnetic transmission to achieve linear lifting and rotation, allowing the three-dimensional model to be cleaned, dried and cured during rotation, making the cleaning, drying and curing more thorough, and can be combined to isolate the power part from the cleaning liquid. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the principle of the post-processing all-in-one machine for processing 3D printed models, in which the present invention is applied.

[0029] Figure 2 yes Figure 1 A schematic diagram illustrating the principle of the hidden cleaning container;

[0030] Figure 3 This is a three-dimensional schematic diagram of the principle of the present invention;

[0031] Figure 4 This is a schematic diagram of the side structure principle of the present invention;

[0032] Figure 5 This is a schematic diagram illustrating the principle of the cutting process of this invention;

[0033] Figure 6 This is a schematic diagram illustrating the principle of ultraviolet light irradiating the bottom of a rotating three-dimensional model in this invention.

[0034] Figure 7 This is a schematic diagram illustrating the principle of how the second component in this invention rotates to drive the magnet to charge the battery. Implementation

[0035] like Figures 1 to 7As shown, the present invention provides a two-in-one non-contact drive assembly 1 for processing 3D printed models, comprising a first component 11 configured to allow linear movement and a second component 14 configured to allow rotation, wherein the first component 11 and the second component 14 are hinged to each other; the outer circumferential edge of the first component 11 is provided with at least one first coupling member 12, and the outer circumferential edge of the second component 14 is provided with at least two second coupling members 15; when the first component 11 is driven to move linearly, the second component 14 performs linear movement under the drive of the first component 11. Under magnetic drive, the first coupling member 12 is driven to move up and down; under magnetic drive, the second coupling member 15 is driven to rotate.

[0036] The outer surface of the second component 14 is provided with a support surface for placing the three-dimensional model; furthermore, the second component 14 is provided with a number of drainage holes from the support surface to the lower end face of the second component 14, so that the cleaning liquid can flow from the support surface to the first component 11 through the drainage holes, reducing the water accumulation between the bottom of the three-dimensional model and the support surface, and also reducing the curing area between the bottom of the three-dimensional model and the support surface due to the curing effect of ultraviolet light.

[0037] The linear movement direction of the first component 11 is parallel to or coaxial with the rotation axis of the second component 14. This is mainly because the support surface on which the 3D model is placed is tilted. Since the second component 14 is rotating, if the support surface is tilted outward, the 3D model may touch the inner wall of the cleaning container, easily causing scratches. Preferably, the support surface is concave from top to bottom, and the concavity depth at the center of the second component 14 is greater than the concavity depth at the edge of the second component.

[0038] The first coupling element 12 is configured as a first magnet that allows magnetic coupling, or as a first metal block that allows magnetic coupling. If the first coupling element 12 is driven by a rotating magnet, then the first coupling element 12 is the first magnet; if the first coupling element 12 is driven by a coil, then the first coupling element 12 is the first metal block, and the first metal block is a metal that can generate magnetism, such as iron.

[0039] The second coupling element 15 is configured as a second magnet that allows magnetic coupling, or as a second metal block that allows magnetic coupling. If the second coupling element 15 is driven by a rotating magnet, then the second coupling element 15 is a second magnet; if the second coupling element 15 is driven by a coil, then the second coupling element 15 is a second metal block, and the second metal block is a metal that can generate magnetism, such as iron.

[0040] The outer circumferential edge of the first component 11 is provided with a first position for mounting with the first coupling member 12; the outer circumferential edge of the second component 14 is provided with a second position for mounting with the second coupling member 15. Further, the first position is a first notch provided on the outer circumferential edge of the first component 11; the second position is a second notch provided on the outer circumferential edge of the second component 14.

[0041] The first coupling member 12 is connected to the first notch by a first adhesive material layer, or the first coupling member 12 is fixedly connected to the first notch by a first screw; the second coupling member 15 is connected to the second notch by a second adhesive material layer, or the second coupling member 15 is fixedly connected to the second notch by a second screw.

[0042] A gap is provided between the first component 11 and the second component 14, which allows the second component 14 to rotate relative to the first component 11, and at the same time allows ultraviolet rays emitted from inside the first component 11 to irradiate the second component 14 over a large area.

[0043] The first component 11 is in the shape of a disc, and the second component 14 is in the shape of a disc. The first component 11 and the second component 14 are rotatably connected by a hinge structure. The hinge structure includes a rotating shaft and a bearing. The bearing is sleeved on the rotating shaft. The rotating shaft is fixedly connected to the first component 11 / second component 14, and the bearing is fixedly connected to the second component 14 / first component 11.

[0044] To enhance the solidification effect at the bottom of the 3D model, the first component 11 has two cavities: a first cavity 16 and a second cavity 19. The first cavity 16 is located at the center of the upper surface of the first component 11 and extends inward from the upper surface of the first component 11. The second cavity 19 is located between the first cavity 16 and the outer circumferential edge of the first component 11, and extends inward from the upper surface of the first component 11. The lower end of the second component 14 has a shaft 13. A ball bearing 17 is installed inside the first cavity 16, and the shaft 13 is rotatably connected to the first component 11 through the ball bearing 17. An electromagnet 18 is installed on the shaft 13 inside the first cavity 16. An induction coil 23 and a controller 21 are installed inside the second cavity 19. The system includes a battery 22, a wireless transceiver module 25, and an ultraviolet LED light-emitting module 20; a controller 21 is electrically connected to an induction coil 23, a battery 22, a wireless transceiver module 25, and an ultraviolet LED light-emitting module 20; the induction coil 23 is coupled to an electromagnet 18, and when the shaft 13 rotates, the electromagnet 18 changes the magnetic flux of the induction coil 23, causing the induction coil 23 to generate electricity; the second cavity 19 has an opening, and a sealed waterproof cover 24 is installed at the opening; the sealed waterproof cover 24 and the second component 14 are both supported by transparent materials, and the ultraviolet light emitted by the ultraviolet LED light-emitting module 20 can pass through the sealed waterproof cover 24 and the second component 14 to irradiate the bottom of the three-dimensional model placed on the upper surface of the second component 14.

[0045] The post-processing all-in-one machine 100 for processing 3D printed models includes a central processing unit, a base, a cleaning container mounted on the base, a lifting device mounted on the base, a linear motion driver mounted on the lifting device, a rotary driver mounted on the lifting device, and a two-in-one non-contact drive assembly 1 for processing 3D printed models. The two-in-one non-contact drive assembly 1 for processing 3D printed models is located inside the cleaning container. The linear motion driver drives the first component 11 to move up and down inside the cleaning container, and the linear motion driver and the first component 11 are driven by magnetic coupling. The rotary driver drives the second component 14 to rotate relative to the first component 11, and the rotary driver and the second component 14 are driven by magnetic coupling. The central processing unit is electrically connected to the lifting device and the rotary driver, and the central processing unit is electrically connected to a wireless communication module, which communicates with a wireless transceiver module 25. Only when the model is in a solidified state, the central processing unit sends a control signal to the wireless transceiver module 25 through the wireless communication module. After receiving the control signal through the wireless transceiver module 25, the controller 21 drives the ultraviolet LED light-emitting module 20 to emit light, illuminating the bottom of the rotating three-dimensional model, so as to avoid the bottom of the three-dimensional model not being exposed to ultraviolet light and thus not being completely solidified.

[0046] The central processing unit drives the rotary driver, which in turn drives the second coupling member 15 on the second component 14. Under the drive of the second coupling member 15, the second component 14 rotates on the first component 11. The rotation of the second component 14 causes the shaft 13 to rotate, and the induction magnet on the shaft 13 rotates. The rotation of the induction magnet changes the magnetic flux of the induction coil 23, creating an induction-generated electricity effect. The induction coil 23 charges the battery 22 through the controller 21. The controller 21 receives control commands through the wireless transceiver module 25. After receiving the control commands, the controller 21 drives the ultraviolet LED light-emitting module 20 to emit light. Ultraviolet light shines through the sealed waterproof cover 24 onto the rotating second component 14, and then through the second component 14 onto the bottom of the 3D model. Because the 3D model placed on the second component 14 is rotating, while the ultraviolet LED light-emitting module 20 inside the first component 11 is not rotating, the ultraviolet light can be more evenly irradiated onto the bottom of the 3D model. The sealing waterproof cover 24 seals the second cavity 19, and the battery 22 is charged by the rotating belt of the second component 14. Therefore, no external charging power cord is required, which avoids affecting the lifting and lowering of the first component 11 and also avoids affecting the rotation of the second component 14.

[0047] The beneficial effects of this invention are: it can adapt to non-contact magnetic transmission to achieve linear lifting and rotation, allowing the three-dimensional model to be cleaned, dried and cured during rotation, making the cleaning, drying and curing more thorough, and can be combined to isolate the power part from the cleaning liquid.

Claims

1. A two-in-one contactless drive component for processing 3D printed models, characterized in that: It includes a first component (11) configured to allow linear movement and a second component (14) configured to allow rotation, the first component (11) and the second component (14) being hinged to each other; the outer circumferential edge of the first component (11) is provided with at least one first coupling element (12), and the outer circumferential edge of the second component (14) is provided with at least two second coupling elements (15); when the first component (11) is driven to move linearly, the second component (14) performs linear movement under the drive of the first component (11); a gap is provided between the first component (11) and the second component (14); the first component (11) is disc-shaped, the second component (14) is disc-shaped, and the first component (11) and the second component (14) are hinged to each other. The components (14) are rotatably connected by a hinge structure, which includes a rotating shaft and a bearing, with the bearing mounted on the rotating shaft. The rotating shaft is fixedly connected to the first component (11) / second component (14), and the bearing is fixedly connected to the second component (14) / first component (11). The first component (11) has two cavities inside, namely a first cavity (16) and a second cavity (19). The first cavity (16) is located at the center of the upper surface of the first component (11) and extends inward from the upper surface of the first component (11). The second cavity (19) is located between the first cavity (16) and the outer circumferential edge of the first component (11). The upper surface extends inward; the lower end of the second component (14) is provided with a shaft (13), and a ball bearing (17) is installed inside the first cavity (16). The shaft (13) is rotatably connected to the first component (11) through the ball bearing (17); an electromagnet (18) is installed on the shaft (13) located inside the first cavity (16); the second cavity (19) is provided with an induction coil (23), a controller (21), a battery (22), a wireless transceiver module (25), and an ultraviolet LED light-emitting module (20); the controller (21) is electrically connected to the induction coil (23), the battery (22), the wireless transceiver module (25), and the ultraviolet LED light-emitting module (20); the induction coil (23) is coupled to the electromagnet (18). When the shaft (13) rotates, the electromagnet (18) changes the magnetic flux of the induction coil (23), causing the induction coil (23) to generate electricity. The second cavity (19) has an opening, and a sealed waterproof cover (24) is installed at the opening. The sealed waterproof cover (24) and the second component (14) are both supported by transparent materials. The ultraviolet light emitted by the ultraviolet LED light-emitting module (20) can pass through the sealed waterproof cover (24) and the second component (14) and irradiate the bottom of the three-dimensional model placed on the upper surface of the second component (14). The first coupling element (12) is configured as a first magnet that allows magnetic coupling, or as a first metal block that allows magnetic coupling. The second coupling element (15) is configured as a second magnet that allows magnetic coupling, or as a second metal block that allows magnetic coupling.

2. The two-in-one non-contact drive component for processing 3D printed models according to claim 1, characterized in that: The outer surface of the second component (14) is provided with a support surface.

3. The two-in-one non-contact drive component for processing 3D printed models according to claim 1, characterized in that: The linear movement direction of the first component (11) is parallel to or coaxial with the rotation axis of the second component (14).

4. The two-in-one non-contact drive component for processing 3D printed models according to claim 1, characterized in that: The outer circumferential edge of the first component (11) is provided with a first position for installation with the first coupling member (12); the outer circumferential edge of the second component (14) is provided with a second position for installation with the second coupling member (15).

5. The two-in-one non-contact drive component for processing 3D printed models according to claim 4, characterized in that: The first position is a first notch located on the outer circumferential edge of the first component (11); the second position is a second notch located on the outer circumferential edge of the second component (14).

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