Photocuring 3D printing system, calibration method and computer storage medium

Abstract

The present application relates to a kind of photo-curing 3D printing system, calibration method and computer storage medium, photo-curing 3D printing system includes rack, bunker, calibration platform, light source module and control module;Bunker is located in rack, and bottom is equipped with installation part;Calibration platform its upside is equipped with cooperation part, cooperation part is matched with installation part, so that calibration platform is detachably installed in the downside of bunker, the downside of calibration platform is equipped with multiple calibration parts;Light source module includes galvanometer and laser head located in the rack and below bunker, galvanometer is used to reflect the laser emitted by laser head;Control module is electrically connected with laser head, galvanometer and each calibration part, to control the reflection path of galvanometer.The present application realizes the adjustment of galvanometer, the relatively low requirement of the computing power of equipment, high practicability, and relatively simple structure, save cost.

Description

Technical Field

[0001] This invention relates to the field of photopolymer 3D printing technology, and in particular to a photopolymer 3D printing system, calibration method, and computer storage medium. Background Technology

[0002] The printing principle of photopolymer 3D printing technology is as follows: The cross-sectional layers of the object to be printed are designed, and a pre-programmed sequence is written to print the photosensitive resin layer by layer according to the pre-programmed sequence. Specifically, the laser emitted from the laser source is reflected by a galvanometer to the printing layer, using light waves of a specific frequency to irradiate the printing layer, causing the surface of the photosensitive resin printing layer to solidify rapidly, ultimately achieving photopolymer 3D printing. Typically, to ensure printing accuracy, the galvanometer needs to be calibrated before printing.

[0003] For example, patent CN 205219744 U discloses a laser 3D printer and its galvanometer scanning calibration system. This system obtains the positioning information of a grid target using a CCD image acquisition device, compares this information with that of a standard grid target to obtain a calibration file, and then corrects the galvanometer. However, because it requires a CCD image acquisition device and related equipment, the system's computing power requirements are relatively high, increasing the investment cost. Summary of the Invention

[0004] In view of this, it is necessary to provide a photopolymerization 3D printing system, calibration method, and computer storage medium to solve the technical problem that existing photopolymerization 3D printers with galvanometer calibration functions have relatively high requirements for system computing power, which increases investment costs.

[0005] This invention provides a photopolymerization 3D printing system, which includes:

[0006] frame;

[0007] A hopper is provided on the frame and has a cavity for holding liquid photosensitive material. The upper side of the cavity is open and the bottom wall has a light-transmitting area. The bottom of the hopper is provided with an installation part.

[0008] A calibration platform has a mating part on its upper side, which mates with the mounting part, so that the calibration platform can be detachably installed on the lower side of the hopper. The lower side of the calibration platform has multiple calibration parts, each of which can generate voltage when irradiated by a laser.

[0009] The light source module includes a galvanometer and a laser head disposed on the frame and located below the hopper. The galvanometer reflects the laser light emitted from the laser head, so that when the calibration platform is installed on the hopper, the laser light emitted from the laser head can be reflected onto the calibration unit, and when the calibration platform is detached from the hopper, the laser light emitted from the laser head can pass through the light-transmitting area; and...

[0010] The control module is electrically connected to the laser head, the galvanometer, and each of the calibration units. It controls the reflection path of the galvanometer so that when the calibration platform is installed on the hopper, the galvanometer reflects the laser to the preset calibration unit and obtains the position coordinates of the calibration unit that actually generates the voltage.

[0011] Optionally, the calibration unit is a calibration light-emitting diode disposed on the lower side of the calibration platform;

[0012] The control module is electrically connected to each of the calibration LEDs and can obtain the position coordinates of each calibration LED when the calibration LED generates a voltage.

[0013] Optionally, multiple preset calibration sections are provided at intervals, and when the calibration platform is installed in the hopper, the control module can control the galvanometer to reflect the laser sequentially to each preset calibration section.

[0014] Optionally, the mounting part is a plurality of mounting seats provided at the bottom of the hopper, the plurality of mounting seats are arranged at intervals along the circumference of the hopper, and each mounting seat is provided with a mounting hole in the vertical direction;

[0015] The mating part consists of multiple mating posts located on the upper side of the calibration platform. Each of the multiple mating posts corresponds to one of the multiple mounting seats, and each of the mating posts is inserted into the corresponding mounting hole.

[0016] In this configuration, one of the mounting base and the mating column is made of a magnetic material, and the other is made of a magnetically attractive material.

[0017] Optionally, the photopolymerization 3D printing system further includes:

[0018] The support frame is rotatable about an axis located in its width direction and is positioned above the hopper;

[0019] A forming platform is provided on the support frame and is rotatable about an axis located in the length direction of the support frame;

[0020] A movable seat, movably mounted on the frame in the vertical direction and located above the hopper, is provided with a first driving unit, which is drivenly connected to the support frame to drive the support frame to rotate; and...

[0021] The second drive unit is located on the support frame and is driven to connect with the molding platform to drive the molding platform to rotate.

[0022] Optionally, the lower side of the molding platform is provided with an adjustment seat, and the lower side of the adjustment seat is provided with a plurality of adjustment light-emitting diodes;

[0023] The hopper is equipped with a prism corresponding to the adjustment seat. The prism is used to refract the laser reflected by the galvanometer to the adjustment light-emitting diode located in the middle of the adjustment seat.

[0024] The control module can also control the galvanometer to reflect the laser to the prism and electrically connect it to each of the adjustment LEDs to obtain the position coordinates of the adjustment LEDs that actually generate the voltage.

[0025] Optionally, multiple adjustment seats are provided, and the multiple adjustment seats are arranged at intervals along the circumference of the forming platform;

[0026] The prism is provided in multiple ways corresponding to the adjustment seat.

[0027] Furthermore, the present invention also provides a calibration method for a photopolymer 3D printing system, wherein the photopolymer 3D printing system is any one of the photopolymer 3D printing systems described above, wherein the calibration platform is installed in the material hopper, and the calibration method for the photopolymer 3D printing system includes:

[0028] Obtain the preset position coordinates of the calibration unit to obtain the preset position coordinates;

[0029] The laser head is controlled to output laser light, and the galvanometer is controlled to reflect the laser light output by the laser head to the preset calibration section;

[0030] The position coordinates of the calibration unit that actually generates the voltage are obtained to obtain the actual position coordinates, and the difference between the preset position coordinates and the actual position coordinates is calculated to obtain the correction value.

[0031] Determine whether the correction value exceeds the set range. If the correction value exceeds the set range, adjust the parameters of the galvanometer.

[0032] Optionally, the step of determining whether the correction value exceeds a set range, and adjusting the parameters of the galvanometer if the correction value exceeds the set range, further includes:

[0033] If the correction value does not exceed the set range, then the correction value is stored.

[0034] Furthermore, the present invention also provides a computer storage medium storing a calibration method control program for a photopolymer 3D printing system, wherein when the calibration method control program for the photopolymer 3D printing system is executed by a processor, the calibration method steps of the photopolymer 3D printing system as described in any of the above claims are implemented.

[0035] Compared with existing technologies, the photopolymerization 3D printing system provided by this invention, when galvanometer calibration is required, uses a mating part and a mounting part to install the calibration platform on the lower side of the material bin, so that multiple calibration parts face the light source module. Then, the control module controls the laser head to output laser light, and simultaneously controls the galvanometer to reflect the laser light output from the laser head to the preset calibration parts. When the calibration parts are irradiated by the laser, they generate voltage. Since the control module is electrically connected to each calibration part, it can obtain the position coordinates of the calibration parts that generate voltage in real time, thus obtaining the actual position coordinates. The preset position coordinates of the calibration parts are the preset position coordinates. Therefore, the correction value of the galvanometer can be obtained by directly calculating the difference between the actual position coordinates and the preset position coordinates, achieving galvanometer adjustment. This method has relatively low computational requirements on the equipment. Furthermore, after the galvanometer is adjusted, the calibration platform can be removed from the material bin, allowing the photopolymerization 3D printing system to print normally. It is highly practical, has a relatively simple structure, and saves costs.

[0036] The above description is merely an overview of the technical solution of the present invention. To better understand the technical means of the present invention and to enable its implementation according to the description, preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0038] Figure 1 A schematic diagram of a structure of an embodiment of the photopolymerization 3D printing system provided by the present invention;

[0039] Figure 2 for Figure 1 A front view of a photopolymerization 3D printing system;

[0040] Figure 3 for Figure 1 A schematic diagram of the calibration platform and light source module;

[0041] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0042] Figure 5 This is a schematic flowchart of an embodiment of the calibration method for the photopolymerization 3D printing system of the present invention;

[0043] Figure 6 This is a schematic diagram of the control module of the hardware operating environment involved in the embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100-Photopolymerization 3D Printing System, 1-Frame, 2-Bag, 2a-Receiving Cavity, 21-Mounting Section, 211-Mounting Base, 211a-Mounting Hole, 22-Prism, 3-Calibration Platform, 311-Matching Column, 32-Calibration Section, 321-Preset Calibration Section, 41-Galvanometer, 42-Laser Head, 43-Base, 5-Control Module, 51-Processor, 52-Communication Bus, 53-User Interface, 54-Network Interface, 55-Memory, 6-Carrier Frame, 61-Forming Platform, 611-Adjustment Base, 62-First Drive Section, 63-Second Drive Section. Detailed Implementation

[0046] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0047] Please see Figures 1 to 3 The photopolymerization 3D printing system 100 includes a frame 1, a material bin 2, a calibration platform 3, a light source module, and a control module 5. The material bin 2 is located on the frame 1 and has a receiving cavity 2a for holding liquid photosensitive material. The upper side of the receiving cavity 2a is open, and the bottom wall forms a light-transmitting area. The bottom of the material bin 2 is provided with a mounting part 21. The calibration platform 3 has a mating part on its upper side, which mates with the mounting part 21, so that the calibration platform 3 can be detachably installed on the lower side of the material bin 2. The lower side of the calibration platform 3 is provided with multiple calibration parts 32, each of which can generate voltage when irradiated by laser. The light source module includes a light source module located on the frame 1 and positioned... The galvanometer 41 and laser head 42 are located below the hopper 2. The galvanometer 41 is used to reflect the laser emitted by the laser head 42 so that when the calibration platform 3 is installed in the hopper 2, the laser emitted by the laser head 42 can be reflected to the calibration section 32, and when the calibration platform 3 is removed from the hopper 2, the laser emitted by the laser head 42 can pass through the light-transmitting area. The control module 5 is electrically connected to the laser head 42, the galvanometer 41 and each calibration section 32, and is used to control the reflection path of the galvanometer 41 so that when the calibration platform 3 is installed in the hopper 2, the galvanometer 41 reflects the laser to the preset calibration section 321 and obtains the position coordinates of the calibration section 32 that actually generates the voltage.

[0048] When the photopolymerization 3D printing system 100 provided by the present invention needs to calibrate the galvanometer 41, the calibration platform 3 is installed on the lower side of the material bin 2 through the cooperation of the mating part and the mounting part 21, so that multiple calibration parts 32 face the light source module; then the control module 5 controls the laser head 42 to output laser, and at the same time the control module 5 controls the galvanometer 41 to reflect the laser output by the laser head 42 to the preset calibration parts 321. The calibration parts 32 can generate voltage when irradiated by laser. Since the control module 5 is electrically connected to each calibration part 32, the position coordinates of the calibration parts 32 that generate voltage can be obtained in real time to obtain the actual position coordinates; and the position coordinates of the preset calibration parts 321 are preset position coordinates. In this way, the correction value of the galvanometer 41 can be obtained by directly calculating the difference between the actual position coordinates and the preset position coordinates, so as to realize the adjustment of the galvanometer 41 and the computing power requirement of the equipment is relatively low. Furthermore, once the galvanometer 41 is adjusted, the calibration platform 3 can be removed from the material bin 2, enabling the photopolymer 3D printing system 100 to print normally. It is highly practical, has a relatively simple structure, and saves costs.

[0049] It should be noted that in this embodiment, the liquid photosensitive material is resin. The position coordinates of each calibration unit 32 are stored in the control module 5. Before calibrating the galvanometer 41, a preset calibration unit 321 is selected, and its position coordinates are stored. Thus, when the calibration unit 32 generates voltage under laser irradiation, the control module 5, being electrically connected to each calibration unit 32, can obtain the position coordinates of the voltage-generating calibration unit 32 in real time, compare them with the preset position coordinates, and obtain the correction value. Furthermore, the adjustment parameters of the galvanometer 41 include, but are not limited to, light emission angle, marking speed, jump speed, jump delay, and inflection point delay. Additionally, to avoid the influence of external light on the calibration unit 32, calibration is preferably performed in a darkroom. Specifically, the light source module also includes a base 43, which is located on the frame 1 and below the hopper 2. The laser head 42 and the galvanometer 41 are located on the upper side of the base 43. Furthermore, in this embodiment, the control module 5 is also located on the upper side of the base 43.

[0050] Furthermore, in this embodiment, the calibration unit 32 is a calibration light-emitting diode (LED) located below the calibration platform 3; the control module 5 is electrically connected to each calibration LED and can obtain the position coordinates of the calibration LED when each calibration LED generates voltage. It should be noted that LEDs generate voltage under illumination, and the magnitude of this voltage is related not only to the light intensity but also closely to the angle of incidence of the light. This is prior art and will not be elaborated upon here. In this solution, the calibration unit 32 is set in the form of a calibration LED, which is simple and reliable in structure and further saves costs. In this embodiment, multiple LEDs form an LED screen below the calibration platform 3.

[0051] Furthermore, multiple preset calibration units 321 are provided at intervals. When the calibration platform 3 is installed on the material bin 2, the control module 5 can control the galvanometer 41 to reflect the laser sequentially to each preset calibration unit 321. In this embodiment, the galvanometer 41 reflects the laser sequentially to each preset calibration unit 321 to obtain multiple sets of preset position coordinates and actual position coordinates, thereby obtaining multiple sets of correction values ​​and a correction value table, further improving the adjustment accuracy of the galvanometer 41 and enhancing the printing effect.

[0052] Further, please refer to Figure 4 The mounting section 21 consists of multiple mounting seats 211 located at the bottom of the hopper 2. These mounting seats 211 are spaced apart circumferentially around the hopper 2, and each mounting seat 211 has a mounting hole 211a extending vertically. The mating section consists of multiple mating posts 311 located on the upper side of the calibration platform 3. Each mating post 311 corresponds to one of the mounting seats 211, and each mating post 311 is inserted into its corresponding mounting hole 211a. One of the mounting seats 211 and the mating post 311 is made of a magnetic material, while the other is made of a magnetically attractive material. In this embodiment, the mating post 311 is inserted into its corresponding mounting hole 211a, and the magnetic attraction between the mating post 311 and the mounting seat 211 enables a detachable connection between the calibration platform 3 and the hopper 2. This design is simple and provides stable installation. In this scheme, the mating post 311 is a strong magnetic post, and the mounting seat 211 is made of steel, which is less prone to deformation and improves calibration accuracy.

[0053] Furthermore, the photopolymerization 3D printing system 100 also includes a carrier frame 6, a forming platform 61, a movable seat, and a second drive unit 63. The carrier frame 6 is rotatable about an axis in its width direction and is located above the material bin 2. The forming platform 61 is mounted on the carrier frame 6 and is rotatable about an axis in the length direction of the carrier frame 6. The movable seat is movably mounted on the frame 1 in the vertical direction and is located above the material bin 2. The movable seat is equipped with a first drive unit 62, which is driven to the carrier frame 6 to drive the carrier frame 6 to rotate. The second drive unit 63 is mounted on the carrier frame 6 and is driven to the forming platform 61 to drive the forming platform 61 to rotate. In this solution, by driving the carrier frame 6 to rotate about an axis in its width direction through the first drive unit 62, the forming platform 61 can also rotate about an axis in the width direction of the carrier frame 6. At the same time, the second drive unit 63 can drive the forming platform 61 to rotate about an axis in the length direction of the carrier frame 6. In this way, the leveling and calibration of the forming platform 61 can be achieved, thereby further improving the printing quality.

[0054] It should be noted that in this embodiment, the first drive unit 62 and the second drive unit 63 are configured as drive motors. Furthermore, when the movable seat moves upward, it drives the forming platform 61 to move away from the opening of the material bin 2, so that the printed layers can be gradually stacked and formed. The movable seat can be driven by a drive motor or by a drive cylinder to move vertically; no limitation is made here. In addition, in the example drawings, the rotation axis of the support frame 6 is shown as F1, and the rotation axis of the forming platform 61 relative to the support frame 6 is shown as F2.

[0055] Furthermore, the lower side of the forming platform 61 is provided with an adjustment seat 611, and the lower side of the adjustment seat 611 is provided with multiple adjustment light-emitting diodes; the hopper 2 is provided with a prism 22 corresponding to the adjustment seat 611, and the prism 22 is used to refract the laser reflected by the galvanometer 41 to the adjustment light-emitting diode located in the middle of the adjustment seat 611; the control module 5 can also control the galvanometer 41 to reflect the laser to the prism 22 and electrically connect it with each adjustment light-emitting diode to obtain the position coordinates of the adjustment light-emitting diode that actually generates the voltage. In this embodiment, after the galvanometer 41 is adjusted, the laser from the laser head 42 is transmitted to the adjustment seat 611 through the cooperation of the galvanometer 41 and the prism 22. Similarly, the control module 5 stores the position coordinates of each adjustment LED on the adjustment seat 611, and selects the position coordinates of the LED located in the middle of the adjustment seat 611. It then compares the position coordinates of the adjustment LED that actually generates voltage with those of the adjustment LED in the middle of the adjustment seat 611 to obtain the adjustment value of the molding platform 61. This adjustment is then performed by the first drive unit 62 and the second drive unit 63 to level the molding platform 61. It should be noted that in this embodiment, the control module 5 is also electrically connected to the first drive unit 62 and the second drive unit 63 to regulate them.

[0056] Specifically, multiple adjustment seats 611 are provided, spaced apart circumferentially along the forming platform 61; multiple prisms 22 are provided corresponding to the adjustment seats 611. Thus, by providing multiple adjustment seats 611 and prisms 22, and with multiple adjustment LEDs on the lower side of each adjustment seat 611, multiple adjustment values ​​of the forming platform 61 can be obtained, thereby improving the leveling accuracy of the forming platform 61. It should be noted that when adjusting the forming platform 61, it is first moved to a low position close to the hopper 2 to obtain multiple low-position adjustment values; then, it is moved to a high position away from the hopper 2 to obtain multiple high-position adjustment values. Combining these multiple low-position and high-position adjustment values, it is determined whether manual adjustment of the verticality of the frame 1 is necessary.

[0057] In addition, please see Figure 5The present invention also provides a calibration method for a photopolymer 3D printing system, wherein the photopolymer 3D printing system is the photopolymer 3D printing system 100 as described in any of the above claims, wherein the calibration platform 3 is installed in the material hopper 2. In this embodiment, the calibration method for the photopolymer 3D printing system includes:

[0058] S10: Obtain the preset position coordinates of the calibration unit 321 to obtain the preset position coordinates;

[0059] S20: Control the laser head 42 to output laser light, and control the galvanometer 41 to reflect the laser light output by the laser head 42 to the preset calibration section 321;

[0060] S30: Obtain the position coordinates of the calibration unit 32 that actually generates the voltage, so as to obtain the actual position coordinates, and calculate the difference between the preset position coordinates and the actual position coordinates to obtain the correction value;

[0061] S40: Determine whether the correction value exceeds the set range. If the correction value exceeds the set range, adjust the parameters of the galvanometer 41.

[0062] In this embodiment, the correction value of the galvanometer 41 is obtained by calculating the difference between the preset position coordinates and the actual position coordinates. The parameters of the galvanometer 41 are then adjusted using this correction value to improve printing quality. It should be noted that in this solution, after the initial adjustment of the galvanometer 41, steps S20 to S40 are repeated to control the laser head 42 to output laser again and control the galvanometer 41 to reflect the laser to the preset calibration unit 321. This obtains new actual position coordinates, which are then compared with the preset position coordinates to obtain a new correction value. The new correction value is then checked against the set range until it meets the specified range. This effectively ensures the adjustment accuracy of the galvanometer 41.

[0063] Furthermore, based on the above embodiments, the step of determining whether the correction value exceeds the set range, and adjusting the parameters of the galvanometer 41 if the correction value exceeds the set range, further includes: if the correction value does not exceed the set range, storing the correction value for subsequent adjustment.

[0064] It should be noted that the above setting range can be adjusted according to the printing accuracy requirements; specifically, it can be the position coordinate difference between two adjacent calibration sections 32, or the position coordinate difference between two calibration sections 32 separated by one calibration section 32, etc.

[0065] In addition, the present invention also provides a computer storage medium storing a calibration method control program for a photopolymer 3D printing system, wherein when the calibration method control program for the photopolymer 3D printing system is executed by a processor, the calibration method steps of the photopolymer 3D printing system as described above are implemented.

[0066] It should be noted that the control module 5 of the hardware operating environment involved in the embodiments of the present invention may include: a processor 51, such as a central processing unit (CPU), a communication bus 52, a user interface 53, a network interface 54, and a memory 55. The communication bus 52 is used to realize the connection and communication between these components. The user interface 53 may include a display screen, and optionally, the user interface 53 may also include a standard wired interface or a wireless interface. In this invention, the wired interface of the user interface 53 may be a USB interface. The network interface 54 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 55 may be a high-speed random access memory (RAM) or a non-volatile memory (NVM), such as a disk storage device. The memory 55 may also optionally be a storage device independent of the aforementioned processor 51.

[0067] Those skilled in the art will understand that Figure 6 The structure shown does not constitute a limitation on the control module 5, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0068] like Figure 6 As shown, in this embodiment, the memory 55 of a computer storage medium may include an operating system, a network communication module, a user interface module, and a calibration method control program for a photopolymerization 3D printing system.

[0069] exist Figure 6 In the control module 5 shown, the network interface 54 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 53 is mainly used to connect to the user equipment; the control module 5 calls the calibration method control program of the photopolymer 3D printing system stored in the memory 55 through the processor 51, and executes the calibration method of the photopolymer 3D printing system provided in this embodiment of the invention.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A light-cured 3D printing system, characterized in that, It includes: frame; A hopper is provided on the frame and has a cavity for holding liquid photosensitive material. The upper side of the cavity is open and the bottom wall has a light-transmitting area. The bottom of the hopper is provided with an installation part. A calibration platform has a mating part on its upper side, which mates with the mounting part, so that the calibration platform can be detachably installed on the lower side of the hopper. The lower side of the calibration platform has multiple calibration parts, each of which can generate voltage when irradiated by a laser. The light source module includes a galvanometer and a laser head disposed on the frame and located below the hopper. The galvanometer reflects the laser light emitted from the laser head, so that when the calibration platform is installed on the hopper, the laser light emitted from the laser head can be reflected onto the calibration unit, and when the calibration platform is detached from the hopper, the laser light emitted from the laser head can pass through the light-transmitting area; and... The control module is electrically connected to the laser head, the galvanometer, and each of the calibration units. It is used to control the reflection path of the galvanometer so that when the calibration platform is installed on the hopper, the galvanometer reflects the laser to the preset calibration unit and obtains the position coordinates of the calibration unit that actually generates the voltage. Furthermore, the position coordinates of each calibration unit are stored in the control module. Before calibrating the galvanometer, a preset calibration unit is selected, and its position coordinates are selected and stored. The position coordinates of the preset calibration unit are the preset position coordinates. In this way, the correction value of the galvanometer can be obtained by directly calculating the difference between the actual position coordinates and the preset position coordinates, thus realizing the adjustment of the galvanometer.

2. The photocuring 3D printing system of claim 1, wherein, The calibration unit is a calibration light-emitting diode located on the lower side of the calibration platform; The control module is electrically connected to each of the calibration LEDs and can obtain the position coordinates of each calibration LED when the calibration LED generates a voltage.

3. The photocuring 3D printing system according to claim 1 or 2, characterized in that, The preset calibration sections are spaced out in multiples, and when the calibration platform is installed in the hopper, the control module can control the galvanometer to reflect the laser sequentially to each preset calibration section.

4. The photocuring 3D printing system of claim 1, wherein, The mounting part consists of multiple mounting seats located at the bottom of the hopper. The multiple mounting seats are spaced apart along the circumference of the hopper, and each mounting seat has a mounting hole extending through it in the vertical direction. The mating part consists of multiple mating posts located on the upper side of the calibration platform. Each of the multiple mating posts corresponds to one of the multiple mounting seats, and each of the mating posts is inserted into the corresponding mounting hole. In this configuration, one of the mounting base and the mating column is made of a magnetic material, and the other is made of a magnetically attractive material.

5. The photocuring 3D printing system of claim 1, wherein, The photopolymerization 3D printing system also includes: The support frame is rotatable about an axis located in its width direction and is positioned above the hopper; A forming platform is provided on the support frame and is rotatable about an axis located in the length direction of the support frame; A movable seat, movably mounted on the frame in the vertical direction and located above the hopper, is provided with a first driving unit, which is drivenly connected to the support frame to drive the support frame to rotate; and... The second drive unit is located on the support frame and is driven to connect with the molding platform to drive the molding platform to rotate.

6. The photocuring 3D printing system of claim 5, wherein, The molding platform is provided with an adjustment seat on its lower side, and the adjustment seat is provided with a plurality of adjustment light-emitting diodes on its lower side; The hopper is equipped with a prism corresponding to the adjustment seat. The prism is used to refract the laser reflected by the galvanometer to the adjustment light-emitting diode located in the middle of the adjustment seat. The control module can also control the galvanometer to reflect the laser to the prism and electrically connect it to each of the adjustment light-emitting diodes to obtain the position coordinates of the adjustment light-emitting diodes that actually generate the voltage. The control module stores the position coordinates of each adjustment LED on the adjustment seat, and selects the position coordinates of the LED located in the middle of the adjustment seat. The adjustment LED that actually generates voltage is compared with the position coordinates of the adjustment LED in the middle of the adjustment seat to obtain the adjustment value of the molding platform. Then, the molding platform is leveled by the first drive unit and the second drive unit.

7. The photocuring 3D printing system of claim 6, wherein, The adjustment seats are provided in multiple ways, and the multiple adjustment seats are arranged at intervals along the circumference of the forming platform; The prism is provided in multiple ways corresponding to the adjustment seat.

8. A method of calibrating a light-cured 3D printing system, the light-cured 3D printing system being the light-cured 3D printing system of any one of claims 1 to 7, wherein, The calibration platform is installed in the material hopper, characterized in that the calibration method of the photopolymerization 3D printing system includes: Obtain the preset position coordinates of the calibration unit to obtain the preset position coordinates; The laser head is controlled to output laser light, and the galvanometer is controlled to reflect the laser light output by the laser head to the preset calibration section; The position coordinates of the calibration unit that actually generates the voltage are obtained to obtain the actual position coordinates, and the difference between the preset position coordinates and the actual position coordinates is calculated to obtain the correction value. Determine whether the correction value exceeds the set range. If the correction value exceeds the set range, adjust the parameters of the galvanometer.

9. The method of calibrating a light-cured 3D printing system according to claim 8, wherein, The step of determining whether the correction value exceeds a set range, and adjusting the parameters of the galvanometer if the correction value exceeds the set range, further includes: If the correction value does not exceed the set range, then the correction value is stored.

10. A computer storage medium storing a calibration method control program for a photopolymer 3D printing system, wherein the calibration method control program for the photopolymer 3D printing system, when executed by a processor, implements the steps of the calibration method for the photopolymer 3D printing system as described in any one of claims 8 to 9.

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