A fast and intelligent light-curing 3D printer

Abstract

The invention discloses a fast intelligent light-curing 3D printer, including a frame body, a light source mechanism, a tilting release mechanism, a material trough, a lifting mechanism, a building mechanism and a control system. The tilting release mechanism includes a rotating middle plate and a tilting component, the rotating middle plate is movably connected to the fixed middle plate, the other end of the rotating middle plate is movably connected to the tilting component, the rotating middle plate is fixedly connected to the material trough, and the tilting component drives the material trough to tilt up and down through the rotating middle plate; the building mechanism includes a building plate, a panel, an automatic adjustment component and a pressure sensor, the automatic adjustment component is located between the building plate and the panel, the surface of the building plate is parallel to the surface of the panel or there is an angle, the building plate is parallel to the screen or there is an angle, the pressure sensor is connected to the control system, and the pressure sensor transmits the signal of the stress received by the building plate to the control system. The fast intelligent light-curing 3D printer has the advantages of detecting the printing situation and ensuring the printing quality of parts.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and in particular to a fast intelligent light-curing 3D printer. Background Art

[0002] The basic principle of photo-curing 3D printing is to build up the three-dimensional shape of the target part by stacking materials layer by layer. First, the geometric shape of the target part is decomposed into a series of horizontal plane layers. Then, a light beam of a specific wavelength is used to scan the liquid photosensitive resin layer by layer. At each level, the area irradiated by the beam will solidify, while the area not affected by the beam remains in a liquid state. Through this layer-by-layer scanning and curing method, the complete shape of the target part is gradually built up. This method can make the material utilization efficiency close to 100%.

[0003] During the process of photocuring 3D printing, the high-definition screen on the printing platform displays the geometric shape of the single layer of the printed part. The material tank containing liquid photosensitive resin is placed above the printing platform, and the build plate is immersed in the material tank. There is a gap between the build plate and the printing platform for single-layer curing. The light on the screen shines into the resin through the transparent release film at the bottom of the material tank, causing the resin to cure and adhere to the build plate, while the area not affected by the light beam remains in liquid state. The build plate that has completed single-layer curing is moved upward by the vertical screw rod to separate the build plate from the printing platform; the liquid resin will quickly fill the separated space in the middle; when the build plate is separated upward to a certain height, the liquid resin fills the gap between the two platforms, and the build plate descends and maintains the gap required for single curing with the printing platform, which is ready for the next layer of printing. The vertical separation process is crucial to maintaining the accuracy and quality of the parts. The gap between the build plate and the printing platform needs to be exactly the same each time the curing occurs, and the build plate does not move in the horizontal direction to ensure the quality of the part printing.

[0004] Therefore, a fast intelligent light-curing 3D printer is provided to address the deficiencies in the prior art. Summary of the invention

[0005] The present invention provides a fast intelligent light-curing 3D printer, aiming to solve the problem that the light-curing 3D printer cannot detect the printing situation in real time during fast intelligent printing, resulting in the inability to ensure the printing quality of parts.

[0006] The present invention adopts the following technical solutions:

[0007] A fast intelligent light-curing 3D printer, characterized in that it comprises a frame body, a light source mechanism, a tilting release mechanism, a material trough, a lifting mechanism, a building mechanism and a control system, wherein the light source mechanism is located directly below the material trough, the lifting mechanism controls the building mechanism to be suspended directly above the material trough, and the light source mechanism, the tilting release mechanism, the lifting mechanism and the building mechanism are all connected to the control system;

[0008] The frame body comprises a fixed middle plate, wherein the fixed middle plate is provided with a slot for placing the material trough;

[0009] The tilting release mechanism comprises a rotating middle plate and a tilting assembly, wherein the rotating middle plate is movably connected to the fixed middle plate, the other end of the rotating middle plate is movably connected to the tilting assembly, the rotating middle plate is fixedly connected to the material trough, and the tilting assembly drives the material trough to tilt up and down through the rotating middle plate;

[0010] The light source mechanism comprises a light emitting component and a screen, wherein the light emitting component is located directly below the screen, the screen is fixedly connected to the rotating middle plate, and the screen is attached to the bottom of the material trough;

[0011] The building mechanism includes a building plate, a panel, an automatic adjustment component and a pressure sensor, wherein the automatic adjustment component is located between the building plate and the panel, the surface of the building plate is parallel to or at an angle to the surface of the panel, the building plate is parallel to or at an angle to the screen, and the pressure sensor is connected to the control system, and the pressure sensor transmits a signal of stress on the building plate to the control system.

[0012] As a further improvement of the technical solution of the present invention, the automatic leveling assembly includes a first adjustment assembly, a second adjustment assembly and a housing, the building plate is kept stationary in the horizontal direction by the first adjustment assembly, the building plate floats up and down in the Z-axis direction by the second adjustment assembly, the building plate is connected to the panel by the first adjustment assembly and the second adjustment assembly, and the housing is fixedly connected to the panel;

[0013] The first connection assembly includes a plurality of first fixed columns and a first elastic member, one end of the first fixed column is fixedly connected to the building plate, the other end passes through the housing and is fixedly connected to the first elastic member, and the other end of the first elastic member is fixedly connected to the panel;

[0014] The second connecting assembly includes a plurality of second fixed columns and a second elastic member, one end of the second fixed column is fixedly connected to the building plate, the second elastic member is nested in one end of the second fixed column close to the panel, and the second elastic member is respectively abutted against the panel and the second fixed column.

[0015] As a further improvement of the technical solution of the present invention, the construction mechanism further includes a locking assembly, and the locking assembly is fixedly connected to the lifting mechanism;

[0016] The locking assembly includes a locking wrench, a first connecting block and a lifting platform, the lifting platform is fixedly connected to the panel, the locking wrench also includes a connecting rod, the connecting rod passes through the locking wrench and the first connecting block, the locking wrench is rotatably connected to the first connecting block through the connecting rod, and the first connecting block is locked and connected to the lifting platform through the locking wrench.

[0017] As a further improvement of the technical solution of the present invention, the locking assembly further includes a third elastic member, the pressure sensor is attached to the first connecting block, the third elastic member is located in the lifting platform, one end of the third elastic member is fixedly connected to the panel, and the other end is separated from or interference fit with the locking wrench;

[0018] When the third elastic member abuts and cooperates with the locking wrench, the locking assembly is locked. When the locking assembly is locked, it includes a natural state and a deformed state:

[0019] When in the natural state: the third elastic member is in abutment with the locking wrench;

[0020] When in a deformed state: the third elastic member is pressed against and matched with the locking wrench, the locking wrench is pressed against the first connecting block through the connecting rod, and the first connecting block is deformed.

[0021] As a further improvement of the technical solution of the present invention, the deformation signal received by the pressure sensor includes a first deformation signal and a second deformation signal;

[0022] When the first deformation signal is generated, the building plate and the screen abut against each other to generate a first reaction force, and the first reaction force is transmitted to the first connecting block through the third elastic member to cause deformation;

[0023] When the second deformation signal is generated, the building plate abuts against the resin in the material tank to generate a second reaction force, and the second reaction force is transmitted to the first connecting block through the third elastic member to cause deformation.

[0024] As a further improvement of the technical solution of the present invention, the tilting assembly includes a driving motor, an eccentric wheel, a first bearing, a second bearing, a first support rod, a second support rod, and a hinged spring;

[0025] The output end of the driving motor is fixedly connected to the eccentric wheel, and the end of the eccentric wheel away from the driving motor is fixedly connected to the first bearing, the first support rod is provided with a first through hole adapted to the first bearing and a second through hole adapted to the second bearing, the rotating middle plate is fixedly connected to the first support plate, the rotating middle plate is movably connected to the fixed middle plate through the hinged spring sheet, the hinged spring sheet and the first support rod are respectively located at two ends of the rotating middle plate, and the driving motor drives the end of the rotating middle plate away from the hinged spring sheet to move up and down through the eccentric wheel, the first bearing, the second bearing and the first support rod;

[0026] The second support rod is fixedly connected to the fixed middle plate, the second support rod is fixedly connected to the driving motor, and the second support rod is provided with a slot matched with the eccentric wheel.

[0027] As a further improvement of the technical solution of the present invention, the light emitting assembly includes a curing light source, a lens assembly and a light shield, the curing light source is located below the lens assembly, and the curing light source and the lens assembly are both arranged inside the light shield.

[0028] As a further improvement of the technical solution of the present invention, the light source mechanism also includes a screen mounting plate, and the screen and the material trough are fixed to the rotating middle plate through the screen mounting plate.

[0029] As a further improvement of the technical solution of the present invention, the lifting mechanism includes a back plate, a guide slide assembly, a motor assembly and a second connecting block, the back plate is vertically fixed to the middle plate, the motor assembly is fixedly connected to the second connecting block, and the guide slide assembly connects the back plate and the second connecting block.

[0030] As a further improvement of the technical solution of the present invention, the frame body also includes a bottom plate and a plurality of support columns, and the plurality of support columns are fixedly arranged between the middle plate and the bottom plate.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The fast intelligent light-curing 3D printer proposed by the present invention realizes screen tilting by installing the screen on a tiltable rotating middle plate, so that the solidified layer is gradually separated from the release film at a certain angle, thereby reducing the adhesion between the solidified layer and the printing platform to achieve the release effect, and at the same time, the release time is reduced with the help of an eccentric wheel mechanism, thereby increasing the printing speed; during the printing process, the building plate must be kept parallel to the screen and vertically lifted according to the thickness of the printed layer. The adaptive ability of the building mechanism is realized by adding an automatic adjustment component to the building mechanism, and manual leveling is not required to prevent printing failure caused by human operation; a pressure sensor is set on the building mechanism to monitor stress changes, realize automatic leveling printing, and monitor the resin volume in the material tank and the release state of the parts during the printing process, so as to improve the printing success rate and reliability and reduce manual intervention. The light-curing 3D printer realizes the residual material detection function, foreign matter detection function, and detection of abnormal conditions during printing. The fast intelligent light-curing 3D printer has the characteristics of detecting printing conditions and ensuring the printing quality of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of a fast intelligent light-curing 3D printer;

[0035] Figure 2 It is a three-dimensional structural diagram of the lifting mechanism and the building mechanism in the fast intelligent light-curing 3D printer;

[0036] Figure 3 It is a three-dimensional structural diagram of the construction mechanism in the fast intelligent light-curing 3D printer;

[0037] Figure 4 It is a three-dimensional structural schematic diagram of the locking component in the fast intelligent light-curing 3D printer;

[0038] Figure 5 It is an exploded schematic diagram of the building mechanism in the fast intelligent light-curing 3D printer;

[0039] Figure 6 It is an exploded schematic diagram of the tilted release mechanism in the fast intelligent light-curing 3D printer;

[0040] Figure 7 It is a structural schematic diagram of the tilted release state of the tilted release mechanism in the fast intelligent light-curing 3D printer;

[0041] Figure 8 It is a structural schematic diagram of the horizontal state of the inclined release mechanism in the fast intelligent light-curing 3D printer;

[0042] Fig. 9It is a schematic diagram of the structure before printing in a fast intelligent light-curing 3D printer;

[0043] Fig.10 It is a schematic diagram of the structure of printing in a fast intelligent light-curing 3D printer;

[0044] Fig.11 It is a schematic diagram of the structure after printing compensation in a fast intelligent light-curing 3D printer;

[0045] Fig.12 It is a structural schematic diagram of residual material detection of the building mechanism in a fast intelligent light-curing 3D printer;

[0046] Fig.13 It is a structural schematic diagram of foreign body detection in the construction mechanism of a fast intelligent light-curing 3D printer;

[0047] Fig.14 It is an exploded diagram of the light source mechanism in a fast intelligent light-curing 3D printer.

[0048] Reference numerals:

[0049] 1. Frame body; 11. Fixed middle plate; 111. Slot; 12. Bottom plate; 13. Support column;

[0050] 2. Light source mechanism; 21. Light emitting assembly; 211. Curing light source; 212. Lens; 213. Lens holder; 214. Light shield; 22. Screen; 23. Screen mounting plate; 24. Heat sink;

[0051] 3. Tilt release mechanism; 31. Rotating middle plate; 32. Tilt assembly; 321. Drive motor; 322. Eccentric wheel; 323. First bearing; 324. Second bearing; 325. First support rod; 326. Second support rod; 327. Articulated spring;

[0052] 4. Feed trough;

[0053] 5. Lifting mechanism; 51. Back plate; 52. Guide rail; 53. Guide slide block; 54. Screw motor; 55. Screw; 56. Second connecting block; 57. Induction sheet; 58. Inductor;

[0054] 6. Building mechanism; 61. Building plate; 62. Panel; 63. Automatic adjustment component; 631. First fixed column; 632. First elastic member; 633. Housing; 634. Second fixed column; 635. Second elastic member; 64. Locking component; 641. Locking wrench; 642. First connecting block; 643. Lifting platform; 644. Connecting rod; 645. Third elastic member. DETAILED DESCRIPTION

[0055] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0056] A fast intelligent light-curing 3D printer, reference Figures 1 to 14 , including a frame body 1, a light source mechanism 2, a tilting release mechanism 3, a material trough 4, a lifting mechanism 5, a building mechanism 6 and a control system;

[0057] In one embodiment, the light source mechanism 2 is located directly below the material trough 4, the lifting mechanism 5 controls the building mechanism 6 to be suspended directly above the material trough 4, and the light source mechanism 2, the tilting release mechanism 3, the lifting mechanism 5 and the building mechanism 6 are all connected to the control system.

[0058] Among them, by installing the screen 22 on the tiltable rotating middle plate 31, the screen 22 is tilted, and the solidified layer is gradually separated from the release film at a certain angle, thereby reducing the adhesion between the solidified layer and the printing platform to achieve the release effect, and at the same time, the eccentric wheel 322 mechanism is used to reduce the release time, thereby increasing the printing speed; during the printing process, the building plate 61 must remain parallel to the screen 22 and be vertically lifted according to the thickness of the printing layer. By adding an automatic adjustment component 63 to the building mechanism 6, the adaptive ability of the building mechanism 6 is realized, and manual leveling is not required to prevent printing failure caused by human operation; a pressure sensor is set on the building mechanism 6 to monitor stress changes, realize automatic leveling printing, and monitor the resin volume in the material tank 4 and the release state of the parts during the printing process, so as to improve the printing success rate and reliability and reduce manual intervention. The residual material detection function, foreign body detection function and abnormal situation detection during the printing process of the light-curing 3D printer are realized. This fast and intelligent light-curing 3D printer has the characteristics of detecting the printing situation and ensuring the printing quality of the parts.

[0059] In one embodiment, since the building mechanism 6 is released perpendicular to the direction of the screen 22, during the release process, the entire surface of the printed model and the screen 22 is separated at the same time, which will produce a large adhesion between the layers, making separation difficult, especially when printing complex geometric shapes or large parts, which will affect the accuracy and geometry of the printed object. When the lead screw motor 54 is used to lift the building mechanism 6, the uncured liquid resin may not be completely removed during the Z-axis release process, resulting in residue between the layers, affecting the quality, or after release, due to the high viscosity of the resin, it cannot flow back in time to fill the entire printing area, resulting in printing defects. In order to solve this problem, it is necessary to increase the lifting distance of the release, resulting in a longer time required for each layer to be released. As a result, the release stage occupies a considerable proportion of the time in the entire printing process, so it becomes difficult to effectively improve the printing efficiency. By setting an inclined release mechanism 3, the adhesion between the solidified layer and the printing platform is reduced. Refer to Figure 3 As shown, the tilting release mechanism 3 includes a rotating middle plate 31 and a tilting assembly 32. The other end of the rotating middle plate 31 is hingedly connected to the fixed middle plate 11. The rotating middle plate 31 is hingedly connected to the tilting assembly 32. The rotating middle plate 31 is fixedly connected to the material trough 4. The tilting assembly 32 drives the material trough 4 to tilt up and down through the rotating middle plate 31.

[0060] Among them, refer to Figure 7-Figure 8 As shown, the rotating middle plate 31 can be switched between the horizontal state and the inclined state. When the rotating middle plate 31 is in the horizontal state, it is parallel to the building plate 61, and there is a gap between the two required for printing parts, which is filled with liquid resin. The liquid resin is solidified after being irradiated by the light beam of the screen 22 embedded in the rotating middle plate 31. After the liquid resin is solidified, one end of the rotating middle plate 31 tilts downward and gradually separates from the building platform, and the space between the building platform and the printing platform is filled with liquid resin again. At the same time, the lifting mechanism 5 pulls the building plate 61 upward to the height required for printing parts, and the rotating middle plate 31 returns from the inclined state to the horizontal state, and is parallel to the building plate 61 again, and there is a gap of a height between the building plate 61 and the rotating middle plate 31, which is filled with liquid resin again, and the screen 22 irradiates the light beam again to solidify the liquid resin again; the material is stacked layer by layer over and over again to build the three-dimensional shape of the target part.

[0061] In one embodiment, referring to Figure 6As shown, the tilting assembly 32 includes a driving motor 321, an eccentric wheel 322, a first bearing 323, a second bearing 324, a first support rod 325, a second support rod 326 and a hinge spring 327; the output end of the driving motor 321 is fixedly connected to the eccentric wheel 322, the end of the eccentric wheel 322 away from the driving motor 321 is fixedly connected to the first bearing 323, the first support rod 325 is provided with a first through hole adapted to the first bearing 323 and a second through hole adapted to the second bearing 324, the rotating middle plate 31 is fixedly connected to the first support plate, and the rotating middle plate 31 is connected to the first support plate by the hinge spring 327 It is hingedly connected to the fixed middle plate 11, and the hinged spring piece 327 and the first support rod 325 are respectively located at the two ends of the rotating middle plate 31. The driving motor 321 drives the rotating middle plate 31 to move up and down at one end away from the hinged spring piece 327 through the eccentric wheel 322, the first bearing 323, the second bearing 324 and the first support rod 325, and the rotating middle plate 31 switches between the horizontal state and the inclined state; the second support rod 326 is fixedly connected to the fixed middle plate 11, and the second support rod 326 is fixedly connected to the driving motor 321, and the second support rod 326 is provided with a slot 111 adapted to the eccentric wheel 322. The tilting component 32 adopts the eccentric wheel 322 mechanism, and the driving motor 321 directly drives the eccentric wheel 322 to rotate, so that the movement distance of the inclined release is much smaller than the movement distance of the vertical release; the time consumed in the release stage is greatly reduced.

[0062] In one embodiment, referring to Figure 3 As shown, the building mechanism 6 includes a building plate 61, a panel 62, an automatic adjustment component 63 and a pressure sensor. The automatic adjustment component 63 is located between the building plate 61 and the panel 62. The surface of the building plate 61 is parallel to or at an angle with the surface of the panel 62. The building plate 61 is parallel to or at an angle with the screen 22. The pressure sensor is connected to the control system, and the pressure sensor transmits the received signal of the reaction force on the building plate 61 to the control system. In order to avoid the situation where the printed model cannot stick to the building plate 61 and cause printing failure, the automatic adjustment component 63 is set at the building mechanism 6 to realize the adaptive ability of the building mechanism 6. This makes it possible to realize automatic leveling of the building plate 61 of the 3D printer without manually leveling the building plate 61 during the printing process.

[0063] Among them, general 3D printers do not have residual material detection and board drop detection functions. If you fail to pay attention to the printing process in time, it is very likely that the model printing will fail due to insufficient residual material; the LCD screen 22 will be damaged due to failure to notice the foreign matter in the build plate 61 and the material tank 4. By setting up a pressure sensor, the residual material detection function, foreign matter detection function, and abnormal situation detection function of the light-curing 3D printer are realized. In addition, this sensor system can also monitor the volume change of the resin in the material tank 4 and the release state during the printing process, thereby realizing real-time detection of the printing process.

[0064] In one embodiment, referring to Figure 5 As shown, the automatic adjustment component 63 includes a first connection component, a second connection component and a shell 633 , the building plate 61 is connected to the panel 62 via the first connection component and the second connection component, and the shell 633 is fixedly connected to the panel 62 .

[0065] Preferably, the first connection assembly includes four first fixed columns 631 and first elastic members 632. One end of the first fixed column 631 is fixedly connected to the building plate 61, and the other end passes through the housing 633 and is fixedly connected to the first elastic member 632. The other end of the first elastic member 632 is fixedly connected to the panel 62. The first connection assembly allows the building plate 61 and the panel 62 to remain stationary in the horizontal plane and to move up and down in the Z-axis direction.

[0066] Preferably, the second connection assembly includes four second fixed columns 634 and second elastic members 635, one end of the second fixed column 634 is fixedly connected to the building plate 61, the second elastic member 635 is nested in the end of the second fixed column 634 close to the panel 62, and the second elastic member 635 is respectively in contact with the panel 62 and the second fixed column 634. The second fixed column 634 and the panel 62 are floating, and a second elastic member 635 is installed between the two, so that the building plate 61 and the panel 62 are fixed in the horizontal plane, and can float up and down in the Z-axis direction according to the elastic force of the second elastic member 635. A sealing ring is provided in the middle section of the first fixed column 631 and the second fixed column 632.

[0067] Preferably, the first elastic member 632 and the second elastic member 635 are both located inside the housing 633 , the first elastic member 632 is a supporting spring, and the second elastic member 635 is a spring.

[0068] In one embodiment, the construction mechanism 6 includes a compensation function, referring to Figure 9-11 As shown, at this time, it is assumed that there is an angle between the build plate 61 and the screen 22. First, the build mechanism 6 will follow the lifting mechanism 5 back to the zero point, because under the force of the four second elastic members 635, the build plate 61 will maintain a completely fitted state with the screen 22. At this time, the screen 22 will have a reaction force on the build mechanism 6, and the first connecting block 642 will produce a slight deformation due to this reaction force, thereby triggering the pressure sensor to produce a signal change. The control system will control the position of the build mechanism 6 on the Z axis according to the change value of the pressure sensor to achieve a suitable pre-pressure degree of the build mechanism 6. When each layer is printed, the build mechanism 6 will lift one layer according to the layer thickness until the build plate 61 completely leaves the screen 22, and after compensation, the bottom of the build plate 61 will be completely parallel to the screen 22.

[0069] In one embodiment, referring to Fig.12As shown, the building mechanism 6 includes a residual material detection function. When the building mechanism 6 returns to zero, when the building plate 61 is about to approach the highest point of the material tank 4, the descending speed of the lifting mechanism 5 is adjusted, and the building plate 61 will descend at a slow speed. When the building plate 61 contacts the resin liquid surface, the resin will give the building plate 61 a force f2. Similarly, the pressure sensor located under the first connecting block 642 will generate a signal change value. At this time, the height of the lifting mechanism 5 is the liquid level of the resin in the material tank 4. According to the effective bottom area of ​​the material tank 4, the volume and weight of the resin can be calculated, so as to calculate whether the resin in the material tank 4 meets the amount of resin required for this printing. When the resin is insufficient, the printer will promptly remind the user to add resin. During the printing process, each time the mold is released, the stress on the building plate 61 will change accordingly, and the pressure sensor will record and feedback to the printer chip at all times. If an accident occurs during the printing process, resulting in printing failure, the pressure sensor 58 will detect that the detection value has not changed for a period of time, and the printer will recognize the printing failure and remind the user to handle it in time.

[0070] In one embodiment, referring to Fig.13 As shown, the building mechanism 6 includes a foreign matter detection function. According to the residual material detection function, when the building plate 61 sinks below the resin liquid level, if there is a foreign matter in the building plate 61 or the material tank 4, at this time, when the lifting mechanism 5 continues to return to zero, the building mechanism 6 will be subjected to a large reaction force, and the pressure sensor will produce a large change amplitude. According to the change amplitude, the control system can determine the abnormal surface force of the resin and immediately make a pop-up prompt, indicating that there is a foreign matter in the material tank 4 or the building plate 61, please clean it before continuing printing.

[0071] In one embodiment, referring to Figure 4 As shown, the construction mechanism 6 also includes a locking assembly 64, which is fixedly connected to the lifting mechanism 5; the locking assembly 64 includes a locking wrench 641, a first connecting block 642 and a lifting platform 643, the lifting platform 643 is fixedly connected to the panel 62, the locking wrench 641 also includes a connecting rod 644, the connecting rod 644 passes through the locking wrench 641 and the first connecting block 642, the locking wrench 641 is rotatably connected to the first connecting block 642 through the connecting rod 644, and the first connecting block 642 is locked and connected to the lifting platform 643 through the locking wrench 641.

[0072] Preferably, the locking wrench 641 is eccentrically arranged, and the locking handle is rotated to move the cam surface of the handle downward to achieve locking, thereby improving printing efficiency and quality, and providing users with a more convenient and high-quality printing experience.

[0073] In one embodiment, referring to Figure 4As shown, the front and rear limit of the connection between the construction mechanism 6 and the lifting mechanism 5 is realized by the two trapezoidal surfaces of the first connecting block 642 and the lifting platform 643. The first connecting block 642 is pushed inwards in a process from top to bottom to judge whether the first connecting block 642 is in place. The trapezoidal surface is at a 45° bevel angle to guide, so that the process of pushing the first connecting block 642 inwards is smoother; the eccentric wheel 322 locks the wrench 641, and the locking function is realized by the self-locking of the eccentric wheel 322. The currently adopted scheme is that a manganese steel spring is used as the third elastic member 645. When the eccentric wheel 322 locks the wrench 641 in the locking position, there is an interference of 0.3mm between the cam surface of the locking wrench 641 and the third elastic member 645, forcing the third elastic member 645 to deform, and then cooperate with the self-locking mechanism of the eccentric wheel 322 to lock the wrench 641 to achieve locking. In this solution, the third elastic member 645 can be replaced by a locking wrench 641 , and the material of the locking wrench 641 can be replaced by an elastic plastic material to achieve the same function.

[0074] In one embodiment, the locking assembly 64 also includes a third elastic member 645, a pressure sensor is attached to the first connecting block 642, the third elastic member 645 is located in the lifting platform 643, one end of the third elastic member 645 is fixedly connected to the panel 62, and the other end is separated from or interference fit with the locking wrench 641 to detect the stress changes on the building plate 61 during printing.

[0075] Preferably, the locking assembly 64 is locked when the third elastic member 645 abuts against the locking wrench 641. When the locking assembly 64 is locked, it includes a natural state and a deformed state: in the natural state: the third elastic member 645 abuts against the locking wrench 641, and the first connecting block 642 does not deform; in the deformed state: the third elastic member 645 abuts against the locking wrench 641, and the locking wrench 641 abuts against the first connecting block 642 through the connecting rod 644, and the first connecting block 642 deforms. The natural state is the state when the locking assembly 64 is locked, and the first connecting block 642 does not deform; the deformed state is the state when the locking assembly 64 is locked, and the first connecting block 642 does not deform.

[0076] Preferably, the third elastic member 645 is a pressure spring sheet, and the cross section of the third elastic member 645 is in a "X" shape.

[0077] In one embodiment, the pressure sensor receives a deformation signal from the first connecting block 642 and transmits it to the control system; the deformation signal received by the pressure sensor includes a first deformation signal and a second deformation signal; the building plate 61 and the screen 22 abut against each other to generate a first reaction force, which is transmitted to the first connecting block 642 through the third elastic member 645 to form a first deformation signal; the building plate 61 and the resin in the material tank 4 abut against each other to generate a second reaction force, which is transmitted to the first connecting block 642 through the third elastic member 645 to form a second deformation signal.

[0078] Among them, during the printing process, when the build plate 61 continues to drop, or the pressure sensor suddenly undergoes a relatively large stress change (at this time, the stress change has exceeded the stress change interval value detected by the resin), it means that there is a foreign object in the build plate 61 or the material tank 4. At this time, the control system immediately stops the action of the screw motor 54, and prompts the operator that there is a foreign object on the material tank 4 or the build plate 61, and it needs to be cleaned before printing, thereby preventing the screen 22 from being damaged. According to different stress sizes, the residual material detection function, foreign object detection function, and abnormal situation detection function during printing of the light-curing 3D printer are realized. The application of this pressure sensor can not only ensure the fitting state of the build plate 61 and reduce the intervention of human operation, but also effectively prevent printing failure. By real-time monitoring of the resin volume and release state, users can better understand the working state of the printer, thereby improving the reliability and success rate of printing. This comprehensive improvement plan can provide users with a better and more convenient printing experience.

[0079] In one embodiment, the light source mechanism 2 includes a light emitting assembly 21 and a screen 22. The light emitting assembly 21 is located directly below the screen 22. The screen 22 is fixedly connected to the rotating middle plate 31. The screen 22 is attached to the bottom of the trough 4. Preferably, the screen 22 is an LCD screen 22.

[0080] In one embodiment, referring to Fig.14 As shown, the light emitting assembly 21 includes a curing light source 211, a lens 212 assembly and a light shield 214. The curing light source 211 is located below the lens 212 assembly, and both the curing light source 211 and the lens 212 assembly are arranged inside the light shield 214. When the rotating middle plate 31 is in a horizontal position, the curing light source 211 starts to expose, and the liquid resin in the material tank 4 is cured under the irradiation of the light beam and adheres to the building plate 61. After completing the curing of a single layer, the driving motor 321 rotates to drive the rotating middle plate 31 to tilt downward and separate from the building platform. At the same time, the screw rod 55 and the driving motor 321 in the motor assembly drive the building mechanism 6 to move vertically upward to the corresponding layer height through the second connecting block 56. When the rotating middle plate 31 returns to a flat position again, the curing light source 211 is exposed again to complete the curing of the next layer.

[0081] Preferably, the lens 212 assembly includes a lens 212 and a lens 212 support, and the lens 212 is fixedly connected to the lens 212 support.

[0082] Preferably, the light shield 214 is funnel-shaped.

[0083] In one embodiment, the light source mechanism 2 further includes a heat sink, which is located below the curing light source 211 to dissipate heat from the curing light source 211 , and one end of the heat sink facing away from the curing light source 211 is threadedly connected to the base.

[0084] In one embodiment, the light source mechanism 2 further includes a screen 22 mounting plate, through which the screen 22 and the material trough 4 are fixed on the rotating middle plate 31 , and the screen 22 and the screen 22 mounting plate tilt and reciprocate together with the rotating middle plate 31 .

[0085] In one embodiment, referring to Figure 2 As shown, the lifting mechanism 5 includes a back plate 51, a guide slide assembly, a motor assembly and a second connecting block 56, the first connecting block 642 is fixedly connected to the second connecting block 56, the back plate 51 is vertically fixed to the middle plate, the motor assembly is fixedly connected to the second connecting block 56, and the guide slide assembly connects the back plate 51 and the second connecting block 56.

[0086] Preferably, the guide slide assembly includes a guide slide rail 52 and a guide slide block 53 , the guide slide rail 52 is fixedly connected to the back plate 51 , and the guide slide block 53 is fixedly connected to the second connecting block 56 .

[0087] Preferably, the motor assembly includes a screw motor 54 and a screw 55 . The screw 55 is fixedly connected to the screw motor 54 . The screw 55 passes through the middle plate and is fixedly connected to the second connecting block 56 .

[0088] In one embodiment, the lifting mechanism 5 further includes a sensing component, which includes a sensing sheet 57 and a sensor 58. The sensing sheet 57 is matched with the sensor 58. The sensing sheet 57 is fixed below the second connecting block 56, and the sensor 58 is fixed above the middle plate.

[0089] In one embodiment, the frame body 1 includes a fixed middle plate 11, and the fixed middle plate 11 is provided with a slot 111 for placing the feed trough 4.

[0090] In one embodiment, the frame body 1 further includes a bottom plate 12 and a plurality of support columns 13 . The plurality of support columns 13 are fixed between the middle plate and the bottom plate 12 . Four foot pads are also provided under the bottom plate 12 , distributed at the four corners of the bottom plate 12 .

[0091] In one embodiment, a camera is installed in the 3D printer to monitor and record the printing in real time, compare the actual printed model with the three-dimensional model, and detect the printing status in real time. The 3D printer is connected via a local area network to achieve remote control, online detection, and real-time viewing of the printing status of the 3D printer.

[0092] In one embodiment, the printer can be connected to a mobile phone and a computer client through a local area network, and the model can be selected through the cloud platform to remotely operate the printer to print the model. The printer has a built-in camera to feed back the detected printing screen in real time, and by comparing it with the 3D model, the printer feeds back the status in real time during the printing process. Remote control, online detection, and real-time viewing of 3D printers can be achieved anytime and anywhere.

[0093] For other contents of the fast intelligent light-curing 3D printer of the present invention, please refer to the prior art and will not be described in detail here.

[0094] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0095] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0098] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0099] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fast intelligent light-curing 3D printer, characterized in that: It includes a frame body, a light source mechanism, a tilting release mechanism, a material trough, a lifting mechanism, a building mechanism and a control system, wherein the light source mechanism is located directly below the material trough, the lifting mechanism controls the building mechanism to be suspended directly above the material trough, and the light source mechanism, the tilting release mechanism, the lifting mechanism and the building mechanism are all connected to the control system; The frame body comprises a fixed middle plate, wherein the fixed middle plate is provided with a slot for placing the material trough; The tilting release mechanism comprises a rotating middle plate and a tilting assembly, wherein the rotating middle plate is movably connected to the fixed middle plate, the other end of the rotating middle plate is movably connected to the tilting assembly, the rotating middle plate is fixedly connected to the material trough, and the tilting assembly drives the material trough to tilt up and down through the rotating middle plate; The light source mechanism comprises a light emitting component and a screen, wherein the light emitting component is located directly below the screen, the screen is fixedly connected to the rotating middle plate, and the screen is attached to the bottom of the material trough; A building mechanism, comprising a building plate, a panel, an automatic adjustment component and a pressure sensor, wherein the automatic adjustment component is located between the building plate and the panel, the surface of the building plate is parallel to or at an angle to the surface of the panel, the building plate is parallel to or at an angle to the screen, and the pressure sensor is connected to the control system, and the pressure sensor transmits a signal of stress on the building plate to the control system; The automatic adjustment component comprises a first adjustment component, a second adjustment component and a housing, the building plate is kept stationary in the horizontal direction by the first adjustment component, the building plate floats up and down in the Z-axis direction by the second adjustment component, the building plate is connected to the panel by the first adjustment component and the second adjustment component, and the housing is fixedly connected to the panel; The first adjustment assembly includes a plurality of first fixed columns and a first elastic member, one end of the first fixed column is fixedly connected to the building plate, the other end passes through the housing and is fixedly connected to the first elastic member, and the other end of the first elastic member is fixedly connected to the panel; The second adjustment assembly includes a plurality of second fixed columns and a second elastic member, one end of the second fixed column is fixedly connected to the building plate, the second elastic member is nested in one end of the second fixed column close to the panel, and the second elastic member is respectively abutted against the panel and the second fixed column; The construction mechanism further comprises a locking assembly, wherein the locking assembly is fixedly connected to the lifting mechanism; The locking assembly includes a locking wrench, a first connecting block and a lifting platform, wherein the lifting platform is fixedly connected to the panel, the locking wrench also includes a connecting rod, wherein the connecting rod passes through the locking wrench and the first connecting block, the locking wrench is rotatably connected to the first connecting block via the connecting rod, and the first connecting block is locked and connected to the lifting platform via the locking wrench; The locking assembly further includes a third elastic member, the pressure sensor is attached to the first connecting block, the third elastic member is located in the lifting platform, one end of the third elastic member is fixedly connected to the panel, and the other end is separated from or interference fit with the locking wrench; When the third elastic member abuts and cooperates with the locking wrench, the locking assembly is locked. When the locking assembly is locked, it includes a natural state and a deformed state: When in the natural state: the third elastic member is in abutment with the locking wrench; When in a deformed state: the third elastic member cooperates with the locking wrench, the locking wrench presses against the first connecting block through the connecting rod, and the first connecting block is deformed; The deformation signal received by the pressure sensor includes a first deformation signal and a second deformation signal; When the first deformation signal is generated, the building plate and the screen abut against each other to generate a first reaction force, and the first reaction force is transmitted to the first connecting block through the third elastic member to cause deformation; When the second deformation signal is generated, the building plate abuts against the resin in the material tank to generate a second reaction force, and the second reaction force is transmitted to the first connecting block through the third elastic member to cause deformation.

2. The fast intelligent light-curing 3D printer according to claim 1, characterized in that: The tilting assembly includes a driving motor, an eccentric wheel, a first bearing, a second bearing, a first support rod, a second support rod, and a hinged spring; The output end of the driving motor is fixedly connected to the eccentric wheel, and the end of the eccentric wheel away from the driving motor is fixedly connected to the first bearing, the first support rod is provided with a first through hole adapted to the first bearing and a second through hole adapted to the second bearing, the rotating middle plate is fixedly connected to the first support plate, the rotating middle plate is movably connected to the fixed middle plate through the hinged spring sheet, the hinged spring sheet and the first support rod are respectively located at two ends of the rotating middle plate, and the driving motor drives the end of the rotating middle plate away from the hinged spring sheet to move up and down through the eccentric wheel, the first bearing, the second bearing and the first support rod; The second support rod is fixedly connected to the fixed middle plate, the second support rod is fixedly connected to the driving motor, and the second support rod is provided with a slot matched with the eccentric wheel.

3. The fast intelligent light-curing 3D printer according to claim 1, characterized in that: The light emitting assembly comprises a curing light source, a lens assembly and a light shield, wherein the curing light source is located below the lens assembly, and both the curing light source and the lens assembly are arranged inside the light shield.

4. The fast intelligent light-curing 3D printer according to claim 1, characterized in that: The light emitting assembly comprises a curing light source, a lens assembly and a light shield, wherein the curing light source is located below the lens assembly, and both the curing light source and the lens assembly are arranged inside the light shield.

5. The fast intelligent light-curing 3D printer according to claim 1, characterized in that: The lifting mechanism includes a back plate, a guide slide assembly, a motor assembly and a second connecting block. The back plate is vertically fixed to the middle plate, the motor assembly is fixedly connected to the second connecting block, and the guide slide assembly connects the back plate and the second connecting block.

6. The fast intelligent light-curing 3D printer according to claim 1, characterized in that: The frame body also includes a bottom plate and a plurality of support columns, and the plurality of support columns are fixedly arranged between the middle plate and the bottom plate.

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