Color 3D printing control system and color 3D printer

Abstract

The utility model discloses a color 3D printing control system and a color 3D printer, and relates to the technical field of 3D printing. The color 3D printing control system comprises a main controller, a processor, a light source, a spray head driving circuit and a spray head, and the main controller is electrically connected with the light source and used for sending an exposure image file of a printing layer file of a to-be-printed model and a light source control instruction to the light source; the main controller is electrically connected with the processor and is used for sending a color spraying file of the printing layer file to the processor; the first output end of the processor is electrically connected with the control end of the nozzle driving circuit, the output end of the nozzle driving circuit is electrically connected with the nozzle, and the second output end of the processor is electrically connected with the control end of the nozzle. According to the color 3D printing control system and the color 3D printer, the color printing function can be achieved, and the good color model printing effect is achieved.

Description

[0001] This application claims priority to the Chinese patent application filed with the Chinese Patent Office on August 30, 2023, with application number 202322356925.7 and application name “A color 3D printing control system and a color 3D printer”, the entire contents of which are incorporated by reference in the application. Technical Field

[0002] The utility model relates to the technical field of 3D printing, in particular to a color 3D printing control system and a color 3D printer. Background Art

[0003] A photocurable 3D printer is a printer that uses a light source to emit light of a specific wavelength to solidify the photosensitive resin material, and then forms a 3D model by stacking it layer by layer. At present, 3D printers can be divided into LCD (Liquid Crystal Display) type, DLP (Digital Light Processing) type, SLA (Stereo Lithography Appearance) type and other types according to the type of light source. However, the above types of printers can only print 3D models of a single color.

[0004] In the prior art, the more common color 3D printing method is a printing method combining powder laying and UV inkjet molding. For example, the patent with publication number CN110757790A proposes a 3D laser printing device, which lays the powder to be sintered on the construction machine when printing the model, and then heats the powder to be sintered to sinter it into a construction layer, and then uses a color printing nozzle to color the construction layer to achieve a color printing function. However, the above printing method combining powder laying and inkjet molding has a slow printing speed and poor color rendering effect.

[0005] That is to say, the above-mentioned existing color printing method cannot achieve the effect of fast, efficient and good color printing. Based on this, how to achieve fast, efficient and good color printing is a technical problem that needs to be solved urgently. Utility Model Content

[0006] In view of this, the utility model provides a color 3D printing control system and a color 3D printer, the main purpose of which is to solve the technical problems of slow printing speed and poor color rendering effect of color models.

[0007] To achieve the above object, the utility model provides a color 3D printing control system, which includes a main controller, a processor, a light source, a nozzle drive circuit and a nozzle, wherein:

[0008] The main controller is electrically connected to the light source, and is used to send the exposure image file of the printing layer file of the model to be printed and the light source control instruction to the light source; the main controller is electrically connected to the processor, and is used to send the color spraying file of the printing layer file to the processor;

[0009] The first output end of the processor is electrically connected to the control end of the nozzle drive circuit, the output end of the nozzle drive circuit is electrically connected to the nozzle, and the second output end of the processor is electrically connected to the control end of the nozzle, wherein the processor is used to generate a start signal and send the start signal to the nozzle drive circuit, the nozzle drive circuit is used to drive the nozzle to spray out the color-developing material, the processor is also used to parse the color spraying file, and output a nozzle hole signal to the nozzle according to the parsing result of the color spraying file, and the nozzle hole signal is used to instruct the nozzle to open the nozzle corresponding to the nozzle.

[0010] In addition, to achieve the above-mentioned purpose, the utility model also proposes a color 3D printer, which includes the above-mentioned color 3D printing control system.

[0011] The utility model provides a color 3D printing control system and a color 3D printer. By connecting the main controller to the light source, and sending the exposure image file of the printing layer file of the model to be printed and the light source control instruction to the light source, the exposure curing of each printing layer of the model can be realized. By connecting the main controller to the processor, and sending the color spraying file of the printing layer file to the processor, and by connecting the processor to the control end of the nozzle drive circuit, and then connecting the output end of the nozzle drive circuit to the nozzle, and connecting the processor to the control end of the nozzle, and sending a start signal and a nozzle hole signal to the nozzle, the inkjet coloring of each printing layer of the model can be realized. The above-mentioned color 3D printing control system can realize the color printing function through the light-curing 3D printer by integrating the control circuit of the light source, the control circuit of the nozzle and the drive circuit of the nozzle into the same system, and improve the performance of the light-curing 3D printer. In addition, the color printing method of controlling and driving the light source and the nozzle is realized through the linkage of the main controller, the processor and the nozzle drive circuit, and has a better color model printing effect.

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 A schematic diagram of the system structure of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0015] Figure 2 A schematic diagram of the system structure of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0016] Figure 3 A schematic diagram of the circuit structure of a nozzle driving circuit of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0017] Figure 4 A schematic diagram of the circuit structure of a nozzle of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0018] Figure 5 A schematic diagram of the circuit structure of a nozzle of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0019] Figure 6 A schematic diagram of the circuit structure of a buffer of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0020] Figure 7 A schematic diagram of the circuit structure of a buffer of a color 3D printing control system provided by an embodiment of the utility model is shown;

[0021] in, Figure 2 The numbers of the various circuit modules in the color 3D printing control system are as follows:

[0022] 1-main controller, 2-FPGA processor, 3-projection optical machine, 4-nozzle drive circuit, 5-nozzle, 6-motor drive circuit network, 7-first motor, 8-second motor, 9-third motor, 10-first random access memory, 11-second random access memory, 12-buffer, 13-USB interface, 14-human-computer interaction device, 15-flash memory, 16-electrically erasable programmable read-only memory, 17-ink stack combination, 18-ink pump, 19-resin pump, 20-power supply circuit, 21-voltage stabilizing circuit, 22-temperature sensor, 23-buzzer, 24-fan, 25-scraper. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0024] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0025] Combine the following Figures 1 to 7 A color 3D printing control system and a color 3D printer according to some embodiments of the present invention are described.

[0026] like Figure 1 As shown, an embodiment of the utility model first proposes a color 3D printing control system, which includes a main controller 1, a processor 2, a light source 3, a nozzle driving circuit 4 and a nozzle 5. The main controller 1 is electrically connected to the light source 3, and can be used to send an exposure image file of a printing layer file of a model to be printed and a light source control instruction to the light source 3, wherein the exposure image file can include, for example, exposure images of each printing layer. The main controller 1 is also electrically connected to the processor 2, and can be used to send a color spraying file of the printing layer file to the processor 2, wherein, for example, the color spraying file can include, for example, the colors to be sprayed of each printing layer in the printing layer file and the spraying areas corresponding to each color to be sprayed. Furthermore, the first output end of the processor 2 is electrically connected to the control end of the nozzle drive circuit 4, the output end of the nozzle drive circuit 4 is electrically connected to the nozzle 5, and the second output end of the processor 2 is electrically connected to the control end of the nozzle 5, wherein the processor 2 can be used to generate a start signal and send the start signal to the nozzle drive circuit 4, the nozzle drive circuit can be used to drive the nozzle to spray out the color material, in addition, the processor 2 can also be used to parse the color spray file, and output the nozzle hole signal to the nozzle 5 according to the analysis result of the color spray file, and the nozzle hole signal can be used to instruct the nozzle 5 to open the nozzle hole corresponding to the nozzle 5, so as to realize the inkjet coloring of each printing layer of the model. In some embodiments, the nozzle ink can be cured, so that the full-color 3D model can be formed by stacking layers.

[0027] Specifically, a printing layer may include a base layer and a coloring layer, the exposure image file is used to instruct the light source to expose to form the base layer, and the color spraying file is used to instruct the nozzle to spray the coloring material (such as color ink, color resin, etc.) to form the coloring layer. In a specific embodiment, the base layer and the coloring layer can be independently stacked layer by layer, or the base layer and the coloring layer can be fused into one layer and then stacked layer by layer.

[0028] In the above embodiment, the main controller can be used to send print files and control instructions related to model printing to the processor and the light source. The light source can solidify the printing material in the 3D printer material tank according to the light source control instructions issued by the main controller, and solidify the base layer after coloring. The processor can drive the nozzle drive circuit to work, and output a start signal to the nozzle through the nozzle drive circuit. In addition, the processor can also parse the color spray file, and output a nozzle signal to the control end of the nozzle according to the parsing result of the color spray file. In this embodiment, the main controller and the processor are pre-implanted with a program module, which can realize a series of operations such as sending control instructions, sending print files, receiving control instructions, receiving print files, and parsing print files when running. It can be understood that the system function of the color 3D printing control system provided in this embodiment is mainly realized by the circuit connection relationship between each circuit module, and does not rely on the program module in a certain circuit module. Moreover, for the main controller and the processor, their module functions can be realized by programs in the prior art.

[0029] For ease of understanding, the working process of the 3D printing control system is described below with a specific example. It can be understood that the following implementation process is only used as an example and is not a limitation of this embodiment. In the actual application of the color 3D printing control system, other methods can also be used to implement the color model printing function.

[0030] Specifically, the user can pre-select the model to be printed, and store the print file of the model to be printed through a pre-prepared storage device, wherein the print file refers to the print file of each print layer of the pre-cut model to be printed, and the print file of each print layer includes an exposure image file and a color spray file, wherein the exposure image file can be used to store the graphic information of each print layer, for example, the exposure image of each print layer, and the color spray file can be used to store the color information of each print layer, for example, the color to be sprayed of each print layer and the spray area corresponding to each color to be sprayed. Specifically, during the process of model printing, the main controller can first read the target layer file currently required to be printed in the storage device, and then send the exposure image file of the target layer file to the light source, such as DLP light machine, through a first serial communication bus such as SPI (Serial Peripheral Interface) bus, and send the light source control instruction to the light source through a second serial communication bus such as IIC (Inter-Integrated Circuit) bus. After receiving the light source control instruction sent by the main controller, the light source can project and solidify the printing material in the material tank according to the graphic information in the exposure image file.

[0031] Furthermore, during or after the projection curing, the main controller can send the color spraying file of the target layer file to the processor through a third serial communication bus such as a QSPI (Queued Serial Peripheral Interface) bus, and send the coloring control instruction to the processor through a third serial communication bus such as a USRT (Universal Asynchronous Receiver / Transmitter) bus. After the processor receives the coloring control instruction, it represents that the shape of the base layer of the target printing layer has been cured and the base layer can be colored. At this time, the processor can generate a start signal through the nozzle drive circuit and send the start signal to the nozzle. In addition, the processor can also parse the color spraying file, and according to the parsing result of the color spraying file, control the nozzle to move to the set position to output the nozzle hole signal to the nozzle to open the corresponding nozzle hole, and color the base layer graphics of the target printing layer through the opened nozzle hole. Finally, the main controller can control the light source to re-cure the colored base layer. After the target printing layer is printed, the main controller can control the height of the printing platform to move one layer, so as to form a color 3D model by stacking layers.

[0032] It should be noted that the selection of the main controller, processor, light source, nozzle and the internal circuit connection mode of the nozzle drive circuit in the above system can be determined according to the actual situation, and this embodiment does not make any specific restrictions here. In addition, the specific connection mode between the main controller, processor, light source, nozzle and nozzle drive circuit in the above system can be determined according to the selection of each device and the circuit structure inside the module, and this embodiment does not make any specific restrictions here. For example, the above color 3D printing control system can be determined by Figure 3 The circuit connection method shown in the figure realizes the function of the nozzle driving circuit and outputs the start signal to Figure 4 The nozzles shown are JP7 and Figure 5 The power supply terminal of the nozzle JP8 shown in the figure, at the same time, the processor can also be Figure 6 The buffer U13 shown and Figure 7 The buffer U14 is shown with Figure 4 The nozzles shown are JP7 and Figure 5 The control end of the nozzle JP8 shown is electrically connected and outputs a nozzle hole signal to the nozzle, thereby realizing the coloring function of the model.

[0033] The color 3D printing control system proposed in the embodiment of the utility model can realize the curing of the base layer of each printing layer of the model by connecting the main controller with the light source and sending the exposure image file of the printing layer file of the model to be printed and the light source control instruction to the light source. By connecting the main controller with the processor and sending the color spraying file of the printing layer file to the processor, and by connecting the processor with the control end of the nozzle drive circuit, and then connecting the output end of the nozzle drive circuit with the nozzle, and connecting the processor with the control end of the nozzle, and sending the start signal and the nozzle hole signal to the nozzle, the inkjet coloring of each printing layer of the model can be realized. Finally, after curing again, the layers can be stacked to form a full-color 3D model. The above-mentioned color 3D printing control system can realize the color printing function through the light-curing 3D printer by integrating the control circuit of the light source, the control circuit of the nozzle and the driving circuit of the nozzle into the same system, and improve the performance of the light-curing 3D printer. In addition, the color printing method of controlling and driving the light source and the nozzle is realized through the linkage of the main controller, the processor and the nozzle drive circuit, which has a better color model printing effect.

[0034] In one embodiment, Figure 2 As shown, the above-mentioned color 3D printing control system also includes a first motor drive circuit, a second motor drive circuit, a third motor drive circuit, a first motor 7, a second motor 8 and a third motor 9, wherein the first drive circuit, the second motor drive circuit and the third motor drive circuit can form a motor drive circuit network, or can be independently set ( Figure 2(not shown), this embodiment is not specifically limited here. Specifically, the first output end of the main controller 1 is electrically connected to the control end of the first motor drive circuit, the output end of the first motor drive circuit is electrically connected to the control end of the first motor 7, and the first motor 7 can be used to rotate or stop rotating according to the first motor control signal issued by the main controller to drive the printing platform to move along the first direction. Further, the third output end of the processor 2 is electrically connected to the control end of the second motor drive circuit, the output end of the second motor drive circuit is electrically connected to the control end of the second motor 8, and the second motor 8 can be used to rotate or stop rotating according to the second motor control signal issued by the processor 2 to drive the nozzle 5 to move along the second direction. Further, the fourth output end of the processor 2 is electrically connected to the control end of the third motor drive circuit, the output end of the third motor drive circuit is electrically connected to the control end of the third motor 9, and the third motor 9 can be used to rotate or stop rotating according to the third motor control signal issued by the processor 2 to drive the nozzle 5 to move along the third direction, wherein the third direction is different from the second direction, or the third direction is perpendicular to the second direction.

[0035] In the above embodiment, the first direction, the second direction and the third direction refer to the coordinate axis directions pre-set in the 3D printer. Generally speaking, the first direction is the vertical direction, and the second direction and the third direction are perpendicular to each other in the horizontal direction. It is understandable that due to the manufacturing error of the machine, the angle of the machine placement and other reasons, the first direction is not necessarily vertical, and the second direction and the third direction are not necessarily horizontal. In this embodiment, the first motor is also called the Z-axis motor, which can drive the printing platform on the Z-axis to move up and down when rotating, so as to realize the layer printing function of the 3D printer. Further, the second motor and the third motor are also called the X-axis motor and the Y-axis motor, and these two motors can drive the nozzle to move left and right when rotating, so as to realize the coloring function of the model. It is understandable that the control signals of the three motors can be implemented according to the program modules set in the main controller and the processor, and the program modules in the main controller and the processor can be implemented by the existing technology, which is not specifically limited here. This embodiment sets three motors, controls the Z-axis motor through the main controller, and controls the X-axis motor and the Y-axis motor through the processor, thereby improving the sensitivity and stability of motor control, thereby improving the performance of the 3D printer. In addition, this embodiment integrates the nozzle drive circuit and the motor drive circuit into the same system, thereby improving system integration and effectively controlling costs.

[0036] In one embodiment, the processor may be an FPGA processor, and the light source may be a projection light machine. The image exposure file includes an exposure image of at least one printing layer in the printing layer file; the color spraying file includes the color to be sprayed of at least one printing layer in the printing layer file and the spraying area corresponding to each color to be sprayed; Figure 2As shown, the above-mentioned color 3D printing control system also includes a first random access memory 10 and a second random access memory 11, wherein the first random access memory 10 is electrically connected to the main controller 1, and can be used to store the exposure image file of the printing layer file of the model to be printed. The second random access memory 11 is electrically connected to the FPGA processor 2, and can be used to store the color spraying file received by the FPGA processor 2 from the main controller 1. In this embodiment, for the same printing layer, the time when the main controller sends the exposure image file to the projection light machine is earlier than the time when the main controller sends the color spraying file to the FPGA processor.

[0037] In the above embodiment, during the model printing process, the main controller can cache the exposure image file in the print file of the target print layer into the first random access memory 10 after reading the print file of the target print layer, and then send the color spray file in the print file of the target print layer to the FPGA processor. After receiving the color spray file, the FPGA processor can cache it into the second random access memory 11. In this embodiment, the first random access memory 10 and the second random access memory 11 can be static random access memory (Static Random-Access Memory, SRAM) or synchronous dynamic random access memory (SDRAM) and other types of memory, which are not specifically limited in this embodiment. In this embodiment, by independently configuring the buffer for the main controller and the FPGA processor, the data transmission efficiency of the print file can be higher, and at the same time, the data can be more stable when used, thereby improving the printing efficiency and coloring effect of the model.

[0038] In one embodiment, the processor may be an FPGA processor. Figure 2 As shown, the above-mentioned color 3D printing control system also includes a buffer 12, wherein the input end of the buffer 12 is electrically connected to the second output end of the FPGA processor 2, and the output end of the buffer 12 is electrically connected to the control end of the nozzle 5. The buffer 12 can be used to buffer the nozzle signal output by the FPGA processor and send the buffered nozzle signal to the control end of the nozzle, wherein the buffering process can be used to enhance the current of the nozzle signal and filter out the clutter in the nozzle signal, so as to improve the driving ability of the nozzle signal.

[0039] In the above embodiment, the buffer is an electronic device for storing digital signals, which can play a buffering role between the input signal and the output signal. In this embodiment, the buffer can amplify and filter the voltage and current of the input nozzle signal, and then output it to the control end of the nozzle, so as to solve the problem of signal attenuation. In addition, the buffer can also play a role in signal protection and isolation, so as to make the nozzle signal more stable and reliable, thereby improving the performance and reliability of the entire system.

[0040] In one embodiment, Figure 2 As shown, the above-mentioned color 3D printing control system also includes a USB interface 13, a human-computer interaction device 14, a flash memory 15 and a powered erasable programmable read-only memory 16, wherein the USB interface 13 is electrically connected to the data transmission end of the main controller 1 for connecting a USB device, and the USB device can be used to store the print file of the model to be printed. The human-computer interaction device 14 is electrically connected to the main controller 1 through a parallel communication bus, and can be used to display the print file of the model to be printed and / or receive the print operation instruction input by the user. The flash memory 15 is electrically connected to the main controller through a fifth serial communication bus, and can be used to store the software interface file of the human-computer interaction device. The powered erasable programmable read-only memory 16 is electrically connected to the main controller through a sixth serial communication bus, and can be used to store the printing status information of the color 3D printing control system.

[0041] In the above embodiment, the USB interface can be a USB2.0 interface and / or a USB3.0 interface. Through the USB interface, an external USB device can be connected. The USB device can be used to store the print file of the model, thereby realizing high-speed transmission of the print file and offline printing of the 3D model. The human-computer interaction device can be an input and output device such as a touch screen, a display, a mouse, a keyboard, etc., which can facilitate the local printing function of the 3D printer and improve the interactive performance of the system. The flash memory (flash memory) can store the software interface file of the human-computer interaction device, thereby realizing the online upgrade of the human-computer interaction device and becoming the carrier for the upgrade of the human-computer interaction device. The electrically erasable programmable read-only memory (EEPROM memory) can store the machine status, the number of printing layers, the light source power of the projection light machine, the number of revolutions of the fan and other printing status information, thereby ensuring that important data is not lost when the power is off, thereby improving the success rate of model printing and the stability of the system. This embodiment can effectively improve the interactive performance and printing performance of the system by setting a USB interface, a human-computer interaction device, a flash memory and an electrically erasable programmable read-only memory.

[0042] In one embodiment, Figure 2As shown, the color-developing material sprayed by the nozzle may include multi-color ink, and the above-mentioned color 3D printing control system also includes an ink stack combination 17 and an ink pump 18, wherein the air suction port of the ink stack combination 17 is connected to the ink suction port of the nozzle 5, the exhaust port of the ink stack combination 17 is connected to the air suction port of the ink pump 18, the exhaust port of the ink pump 18 is connected to the air, and the control end of the ink pump 18 is electrically connected to the second output end of the main controller 1, wherein the ink stack combination 17 and the ink pump 18 can be used to clean the nozzle according to the nozzle cleaning instruction issued by the main controller 1.

[0043] In the above embodiment, when the nozzle is clogged or the printing system has been idle for a period of time, the nozzle can be cleaned by the ink stack combination and the ink pump, wherein the ink pump can be an industrial pump such as a vacuum pump that can generate negative pressure, and the nozzle can be a UV nozzle, and the nozzle can be supplied with ink by an external ink circuit system when in use. Specifically, the cleaning principle of the nozzle is: when the ink pump receives the nozzle cleaning instruction issued by the main controller, it can start working and generate negative pressure, and then the ink clogged in the nozzle is sucked out through the vacuum ink stack, so as to achieve the purpose of cleaning. This embodiment realizes the cleaning function of the nozzle by setting the ink stack combination and the ink pump pair, which can improve the cleaning efficiency of the nozzle, thereby reducing the failure rate of the system and improving the stability and printing performance of the system.

[0044] In one embodiment, Figure 2 As shown, the above-mentioned color 3D printing control system also includes a resin pump control circuit (not shown in the figure) and a resin pump 19, wherein the control end of the resin pump control circuit is electrically connected to the third output end of the main controller 1, the output end of the resin pump control circuit is electrically connected to the control end of the resin pump, the liquid inlet end of the resin pump 19 is connected to the first storage device, and the liquid outlet end of the resin pump 19 is connected to the second storage device, wherein the resin pump control circuit can be used to extract the printing material resin in the first storage device into the second storage device according to the first resin extraction instruction issued by the main controller, and / or to extract the printing material in the second storage device and / or the printing material in the feed pipe of the resin pump into the first storage device according to the second resin extraction instruction issued by the main controller 1. Wherein, the resin pump control circuit can be a bidirectional peristaltic pump control circuit, and the resin pump can be a peristaltic pump. The printing material may include resin.

[0045] In this embodiment, the second material storage device is arranged below the printing platform, the printing platform can be used to place the model to be printed, and the second material storage device can be used to provide printing materials for the model to be printed. When the model is printed, the printing platform drives the model to be printed to sink below the liquid surface of the printing material in the second material storage device, and reserves the thickness of a printing layer. The light source is arranged above the model to be printed, and is used to expose the exposure image of each printing layer of the model to be printed to solidify the printing material. The nozzle is arranged above the model to be printed and can move parallel to the liquid surface of the printing material in the second material storage device, and is used to spray ink on specific areas of each printing layer of the model to be printed to color the model to be printed.

[0046] The printing workflow of the above-mentioned sinking 3D printer is as follows: first, the display component exposes the pattern to solidify the resin, and then ink is sprayed to a specific area through the nozzle to color the current layer of the model, and the display component solidifies the colored ink, and then the Z axis is controlled to sink and lift to a height reserved for a layer thickness. Finally, the resin is self-leveled or scraped with a scraper, and the above process is repeated until printing is completed.

[0047] In the above embodiment, the resin pump refers to an industrial pump capable of extracting liquid, such as a peristaltic pump, etc. The first storage device and the second storage device refer to devices for placing printing materials, wherein the first storage device can be used to store more printing materials for use in model printing, and the second storage device can be used to store the printing materials used for the current model printing. Generally speaking, the first storage device has a larger capacity than the second storage device. Based on this, during the model printing process, the resin pump can be used to extract the printing material resin in the first storage device into the second storage device, so as to ensure the fluidity of the model printing and improve the success rate of the model printing.

[0048] In one embodiment, Figure 2As shown, the above-mentioned color 3D printing control system also includes a power supply circuit 20 and a voltage stabilizing circuit 21. Among them, the power supply circuit 20 includes a first power supply module, a second power supply module, a third power supply module and a fourth power supply module, and the voltage stabilizing circuit 21 includes a first voltage stabilizing module, a second voltage stabilizing module, a third voltage stabilizing module and a fourth voltage stabilizing module, wherein the input end of the first power supply module is used to be electrically connected to an external power supply, the output end of the first power supply module is electrically connected to the input end of the second power supply module, the input end of the third power supply module and the input end of the fourth power supply module, respectively, the output end of the second power supply module is electrically connected to the power supply end of the projection optical machine 3, the output end of the third power supply module is electrically connected to the input end of the voltage stabilizing circuit 21, and the output end of the fourth power supply module is electrically connected to the power supply end of the nozzle driving circuit 4. Furthermore, the input end of the first voltage stabilizing module, the input end of the second voltage stabilizing module, the input end of the third voltage stabilizing module and the input end of the fourth voltage stabilizing module are electrically connected to the output end of the third power supply module respectively, the output end of the first voltage stabilizing module is electrically connected to the power supply end of the main controller 1, the output end of the second voltage stabilizing module is electrically connected to the power supply end of the FPGA processor 2, the output end of the third voltage stabilizing module is electrically connected to the power supply end of the nozzle 5, and the output end of the fourth voltage stabilizing module is electrically connected to the power supply end of other working circuit modules with a power voltage of 5V in the color 3D printing control system except the main controller 1, FPGA processor 2 and nozzle 5.

[0049] In the above embodiment, the first power module can be a 24V power module, the second power module can be a 12V power module, the third power module can be a 5V power module, and the fourth power module can be a 42V power module. By setting a plurality of power modules, the present embodiment can convert the 24V input voltage into 5V, 12V, and 42V DC voltages, respectively, so as to independently power the projection optical machine, the nozzle drive circuit, and each circuit module in the system, thereby ensuring the normal operation of each model in the system. In addition, by setting a plurality of independent voltage stabilizing modules, and independently powering the main components such as the main controller, FPGA processor, and nozzle through a plurality of voltage stabilizing modules, the present embodiment can reduce the signal interference between the components, thereby improving the stability of the system operation.

[0050] In one embodiment, Figure 2As shown, the above-mentioned color 3D printing control system also includes at least one device of a temperature sensor 22, a buzzer 23, a fan 24, and a scraper 25. Among them, the temperature sensor 22 is electrically connected to the first input terminal of the main controller 1, and can be used to send at least one temperature detection signal of the temperature detection signal on the projection optical machine 3, the temperature detection signal on the nozzle 5, and the temperature detection signal on the printing platform to the main controller 1. The buzzer 23 is electrically connected to the fourth output terminal of the main controller 1, and can be used to issue an operation prompt sound according to the buzzer control instruction issued by the main controller 1. The fan 24 is electrically connected to the fifth output terminal of the main controller 1, and can be used to rotate or stop rotating according to the fan control instruction issued by the main controller to dissipate heat and cool the color 3D printing control system. The scraper 25 is electrically connected to the sixth output terminal of the main controller 1, and can be used to scrape off the excess resin on each printing layer of the model to be printed according to the resin scraping instruction issued by the main controller, so that the thickness of each printing layer of the model to be printed is the same.

[0051] In the above embodiment, the operations of collecting temperature signals, issuing buzzer control instructions, issuing fan control instructions, and issuing resin scraping instructions can be implemented according to the program module set inside the main controller, and the program module inside the main controller can be implemented by existing technologies, which are not specifically limited here. This embodiment can further improve the printing performance and stability of the system by setting temperature sensors, buzzers, fans, scrapers and other devices, thereby improving the printing effect of 3D models.

[0052] On the other hand, an embodiment of the present utility model provides a color 3D printer, which includes a color 3D printing control system as described in any one of the embodiments, wherein the relevant description of the color 3D printing control system can be parameterized in the above-mentioned embodiments, and this example will not be repeated here. Specific embodiment:

[0054] In a specific embodiment, Figure 2As shown, an embodiment of the utility model first proposes a color 3D printing control system, which includes a main controller 1, a processor 2, a light source 3, a nozzle driving circuit 4 and a nozzle 5. Among them, the main controller 1 is electrically connected to the light source 3, and can be used to send an exposure image file of a printing layer file of a model to be printed and a light source control instruction to the light source 3, wherein the exposure image file can be, for example, an exposure image of each printing layer. The main controller 1 is also electrically connected to the processor 2, and can be used to send a color spraying file of the printing layer file to the processor 2, wherein the color spraying file can be, for example, the color to be sprayed of each printing layer and the spraying area corresponding to each color to be sprayed. Furthermore, the first output end of the processor 2 is electrically connected to the control end of the nozzle drive circuit 4, the output end of the nozzle drive circuit 4 is electrically connected to the nozzle 5, and the second output end of the processor 2 is electrically connected to the control end of the nozzle 5, wherein the processor 2 can be used to generate a start signal and send the start signal to the nozzle drive circuit 4, the nozzle drive circuit can be used to drive the nozzle to spray out the color material, in addition, the processor 2 can also be used to parse the color spray file, and output the nozzle hole signal to the nozzle 5 according to the analysis result of the color spray file, and the nozzle hole signal can be used to instruct the nozzle 5 to open the nozzle hole corresponding to the nozzle 5, so as to realize the inkjet coloring of each printing layer of the model. Finally, after curing again, the layers are superimposed to form a full-color 3D model.

[0055] Furthermore, the color 3D printing control system further includes a first motor drive circuit, a second motor drive circuit, a third motor drive circuit, a first motor 7, a second motor 8 and a third motor 9, wherein the first drive circuit, the second motor drive circuit and the third motor drive circuit can form a motor drive circuit network or can be independently set ( Figure 2 (not shown), this embodiment is not specifically limited here. Specifically, the first output end of the main controller 1 is electrically connected to the control end of the first motor drive circuit, the output end of the first motor drive circuit is electrically connected to the control end of the first motor 7, and the first motor 7 can be used to rotate or stop rotating according to the first motor control signal issued by the main controller to drive the printing platform to move along the first direction. Further, the third output end of the processor 2 is electrically connected to the control end of the second motor drive circuit, the output end of the second motor drive circuit is electrically connected to the control end of the second motor 8, and the second motor 8 can be used to rotate or stop rotating according to the second motor control signal issued by the processor 2 to drive the nozzle 5 to move along the second direction. Further, the fourth output end of the processor 2 is electrically connected to the control end of the third motor drive circuit, the output end of the third motor drive circuit is electrically connected to the control end of the third motor 9, and the third motor 9 can be used to rotate or stop rotating according to the third motor control signal issued by the processor 2 to drive the nozzle 5 to move along the third direction, wherein the third direction is different from the second direction, or the third direction is perpendicular to the second direction.

[0056] Furthermore, the processor may be an FPGA processor, and the light source may be a projection optical machine. Figure 2 As shown, the above-mentioned color 3D printing control system also includes a first random access memory 10 and a second random access memory 11, wherein the first random access memory 10 is electrically connected to the main controller 1, and can be used to store the exposure image file of the printing layer file of the model to be printed. The second random access memory 11 is electrically connected to the FPGA processor 2, and can be used to store the color spraying file received by the FPGA processor 2 from the main controller 1. In this embodiment, for the same printing layer, the time when the main controller sends the exposure image file to the projection light machine is earlier than the time when the main controller sends the color spraying file to the FPGA processor.

[0057] Furthermore, the processor may be an FPGA processor. Figure 2 As shown, the above-mentioned color 3D printing control system also includes a buffer 12, wherein the input end of the buffer 12 is electrically connected to the second output end of the FPGA processor 2, and the output end of the buffer 12 is electrically connected to the control end of the nozzle 5. The buffer 12 can be used to buffer the nozzle signal output by the FPGA processor and send the buffered nozzle signal to the control end of the nozzle, wherein the buffering process can be used to enhance the current of the nozzle signal and filter out the clutter in the nozzle signal, so as to improve the driving ability of the nozzle signal.

[0058] Furthermore, the above-mentioned color 3D printing control system also includes a USB interface 13, a human-computer interaction device 14, a flash memory 15 and a powered erasable programmable read-only memory 16, wherein the USB interface 13 is electrically connected to the data transmission end of the main controller 1 for connecting a USB device, and the USB device can be used to store the print file of the model to be printed. The human-computer interaction device 14 is electrically connected to the main controller 1 through a parallel communication bus, and can be used to display the print file of the model to be printed and / or receive the printing operation instructions input by the user. The flash memory 15 is electrically connected to the main controller through a fifth serial communication bus, and can be used to store the software interface file of the human-computer interaction device. The powered erasable programmable read-only memory 16 is electrically connected to the main controller through a sixth serial communication bus, and can be used to store the printing status information of the color 3D printing control system.

[0059] Furthermore, the color 3D printing control system further includes an ink stack assembly 17 and an ink pump 18, wherein the air intake port of the ink stack assembly 17 is connected to the ink intake port of the nozzle 5, the exhaust port of the ink stack assembly 17 is connected to the air intake port of the ink pump 18, the exhaust port of the ink pump 18 is connected to the air, and the control end of the ink pump 18 is electrically connected to the second output end of the main controller 1, wherein the ink stack assembly 17 and the ink pump 18 can be used to clean the nozzle according to the nozzle cleaning instruction issued by the main controller. The ink pump can be a vacuum pump.

[0060] Furthermore, the above-mentioned color 3D printing control system also includes a resin pump control circuit (not shown in the figure) and a resin pump 19, wherein the control end of the resin pump control circuit is electrically connected to the third output end of the main controller 1, the output end of the resin pump control circuit is electrically connected to the control end of the resin pump, the liquid inlet end of the resin pump 19 is connected to the first storage device, and the liquid outlet end of the resin pump 19 is connected to the second storage device, wherein the resin pump control circuit can be used to extract the printing material resin in the first storage device into the second storage device according to the first resin extraction instruction issued by the main controller, and / or to extract the printing material in the second storage device and / or the printing material in the feed pipe of the resin pump into the first storage device according to the second resin extraction instruction issued by the main controller 1. The resin pump control circuit can be a bidirectional peristaltic pump control circuit, and the resin pump can be a peristaltic pump.

[0061] Furthermore, the second material storage device is arranged below the printing platform, the printing platform can be used to place the model to be printed, and the second material storage device can be used to provide printing materials for the model to be printed. When the model is printed, the printing platform drives the model to be printed to sink below the liquid surface of the printing material in the second material storage device, and reserves the thickness of a printing layer. The light source is arranged above the model to be printed, and is used to expose the exposure image of each printing layer of the model to be printed to solidify the printing material. The nozzle is arranged above the model to be printed and can move parallel to the liquid surface of the printing material in the second material storage device, and is used to spray ink on specific areas of each printing layer of the model to be printed to color the model to be printed.

[0062] Furthermore, the above-mentioned color 3D printing control system also includes a power supply circuit 20 and a voltage stabilizing circuit 21. The power supply circuit 20 includes a first power supply module, a second power supply module, a third power supply module and a fourth power supply module, and the voltage stabilizing circuit 21 includes a first voltage stabilizing module, a second voltage stabilizing module, a third voltage stabilizing module and a fourth voltage stabilizing module, wherein the input end of the first power supply module is used to be electrically connected to an external power supply, the output end of the first power supply module is electrically connected to the input end of the second power supply module, the input end of the third power supply module and the input end of the fourth power supply module, respectively, the output end of the second power supply module is electrically connected to the power supply end of the projection optical machine 3, the output end of the third power supply module is electrically connected to the input end of the voltage stabilizing circuit 21, and the output end of the fourth power supply module is electrically connected to the power supply end of the nozzle driving circuit 4. Furthermore, the input end of the first voltage stabilizing module, the input end of the second voltage stabilizing module, the input end of the third voltage stabilizing module and the input end of the fourth voltage stabilizing module are electrically connected to the output end of the third power supply module respectively, the output end of the first voltage stabilizing module is electrically connected to the power supply end of the main controller 1, the output end of the second voltage stabilizing module is electrically connected to the power supply end of the FPGA processor 2, the output end of the third voltage stabilizing module is electrically connected to the power supply end of the nozzle 5, and the output end of the fourth voltage stabilizing module is electrically connected to the power supply end of other working circuit modules with a power voltage of 5V in the color 3D printing control system except the main controller 1, FPGA processor 2 and nozzle 5.

[0063] Furthermore, the color 3D printing control system further includes at least one device selected from the group consisting of a temperature sensor 22, a buzzer 23, a fan 24, and a scraper 25. The temperature sensor 22 is electrically connected to the first input terminal of the main controller 1, and can be used to send at least one of the temperature detection signals on the projection optical machine 3, the temperature detection signal on the nozzle 5, and the temperature detection signal on the printing platform to the main controller 1. The buzzer 23 is electrically connected to the fourth output terminal of the main controller 1, and can be used to issue an operation prompt sound according to a buzzer control instruction issued by the main controller 1. The fan 24 is electrically connected to the fifth output terminal of the main controller 1, and can be used to rotate or stop rotating according to a fan control instruction issued by the main controller to dissipate heat and cool the color 3D printing control system. The scraper 25 is electrically connected to the sixth output terminal of the main controller 1, and can be used to scrape off excess resin on each printing layer of the model to be printed according to a resin leveling instruction issued by the main controller, so that the thickness of each printing layer of the model to be printed is the same.

[0064] Furthermore, the above-mentioned color 3D printing control system can be set in a color 3D printer. By setting the above-mentioned color 3D printing control system in the color 3D printer, the color 3D printer can realize the color printing function, thereby improving the performance of the light-curing 3D printer.

[0065] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A color 3D printing control system, characterized in that: The color 3D printing control system includes a main controller, a processor, a light source, a nozzle driving circuit and a nozzle, wherein: The main controller is electrically connected to the light source, and is used to send the exposure image file of the printing layer file of the model to be printed and the light source control instruction to the light source; the main controller is electrically connected to the processor, and is used to send the color spraying file of the printing layer file to the processor; The first output end of the processor is electrically connected to the control end of the nozzle drive circuit, the output end of the nozzle drive circuit is electrically connected to the nozzle, and the second output end of the processor is electrically connected to the control end of the nozzle, wherein the processor is used to generate a start signal and send the start signal to the nozzle drive circuit, the nozzle drive circuit is used to drive the nozzle to spray out the color-developing material, the processor is also used to parse the color spraying file, and output a nozzle hole signal to the nozzle according to the parsing result of the color spraying file, and the nozzle hole signal is used to instruct the nozzle to open the nozzle corresponding to the nozzle.

2. The color 3D printing control system according to claim 1, characterized in that: The system further includes a first motor drive circuit, a second motor drive circuit, a third motor drive circuit, a first motor, a second motor and a third motor, wherein: The first output end of the main controller is electrically connected to the control end of the first motor driving circuit, and the output end of the first motor driving circuit is electrically connected to the control end of the first motor, and the first motor is used to rotate or stop rotating according to a first motor control signal sent by the main controller to drive the printing platform to move along a first direction; The third output terminal of the processor is electrically connected to the control terminal of the second motor driving circuit, the output terminal of the second motor driving circuit is electrically connected to the control terminal of the second motor, and the second motor is used to rotate or stop rotating according to the second motor control signal sent by the processor to drive the nozzle to move along the second direction; The fourth output end of the processor is electrically connected to the control end of the third motor drive circuit, and the output end of the third motor drive circuit is electrically connected to the control end of the third motor. The third motor is used to rotate or stop rotating according to the third motor control signal sent by the processor to drive the nozzle to move along a third direction, and the third direction is different from the second direction, or the third direction is perpendicular to the second direction.

3. The color 3D printing control system according to claim 1, characterized in that: The processor is an FPGA processor, the light source is a projection light machine; the image exposure file includes an exposure image of at least one printing layer in the printing layer file; the color spraying file includes the color to be sprayed of at least one printing layer in the printing layer file and the spraying area corresponding to each color to be sprayed; the system also includes a first random access memory and a second random access memory, wherein, The first random access memory is electrically connected to the main controller and is used to store an exposure image file of a printing layer file of a model to be printed; The second random access memory is electrically connected to the FPGA processor and is used to store the color spraying file received by the FPGA processor from the main controller; For the same printing layer, the time when the main controller sends the exposure image file to the projection light engine is earlier than the time when the main controller sends the color spraying file to the FPGA processor.

4. The color 3D printing control system according to claim 1, characterized in that: The processor is an FPGA processor; the system also includes a buffer, wherein: The input end of the buffer is electrically connected to the second output end of the FPGA processor, and the output end of the buffer is electrically connected to the control end of the nozzle. The buffer is used to buffer the nozzle signal output by the FPGA processor and send the buffered nozzle signal to the control end of the nozzle, wherein the buffering process is used to enhance the current of the nozzle signal and filter out clutter in the nozzle signal.

5. The color 3D printing control system according to claim 1, characterized in that: The system also includes a USB interface, a human-computer interaction device, a flash memory and an electrically erasable programmable read-only memory, wherein: The USB interface is electrically connected to the data transmission end of the main controller and is used to connect a USB device, and the USB device is used to store the print file of the model to be printed; The human-computer interaction device is electrically connected to the main controller via a parallel communication bus, and is used to display the print file of the model to be printed and / or receive a print operation instruction input by a user; The flash memory is electrically connected to the main controller via a serial communication bus and is used to store the software interface file of the human-computer interaction device; The electrically erasable programmable read-only memory is electrically connected to the main controller via another serial communication bus, and is used to store printing status information of the color 3D printing control system.

6. The color 3D printing control system according to claim 1, characterized in that: The color developing material includes multi-color ink, and the system also includes an ink stack assembly and an ink pump, wherein: The air suction port of the ink stack combination is connected to the ink suction port of the nozzle, the exhaust port of the ink stack combination is connected to the air suction port of the ink pump, the exhaust port of the ink pump is connected to the air, and the control end of the ink pump is electrically connected to the second output end of the main controller, wherein the ink stack combination and the ink pump are used to clean the nozzle according to the nozzle cleaning instruction issued by the main controller; the ink pump is a vacuum pump.

7. The color 3D printing control system according to claim 1, characterized in that: The system also includes a resin pump control circuit and a resin pump, wherein: The control end of the resin pump control circuit is electrically connected to the third output end of the main controller, the output end of the resin pump control circuit is electrically connected to the control end of the resin pump, the liquid inlet end of the resin pump is communicated with the first material storage device, and the liquid outlet end of the resin pump is communicated with the second material storage device, wherein the resin pump control circuit is used to extract the printing material in the first material storage device into the second material storage device according to the first resin extraction instruction issued by the main controller, and / or to extract the printing material in the second material storage device and / or the printing material in the material delivery pipe of the resin pump into the first material storage device according to the second resin extraction instruction issued by the main controller; the resin pump control circuit is a bidirectional peristaltic pump control circuit, and the resin pump is a peristaltic pump; the printing material includes resin; The second material storage device is arranged below the printing platform, the printing platform is used to place the model to be printed, and the second material storage device is used to provide printing material for the model to be printed. When the model is printed, the printing platform drives the model to be printed to sink below the liquid level of the printing material in the second material storage device, and reserves a thickness of a printing layer; The light source is arranged above the model to be printed, and is used to expose the exposure image of each printing layer of the model to be printed to solidify the printing material; the nozzle is arranged above the model to be printed and moves parallel to the liquid surface of the printing material in the second material storage device, and is used to spray ink on specific areas of each printing layer of the model to be printed to color the model to be printed.

8. The color 3D printing control system according to claim 1, characterized in that: The processor is an FPGA processor, and the light source is a projection optical machine; the system also includes a power supply circuit and a voltage stabilizing circuit; wherein the power supply circuit includes a first power supply module, a second power supply module, a third power supply module and a fourth power supply module, and the voltage stabilizing circuit includes a first voltage stabilizing module, a second voltage stabilizing module, a third voltage stabilizing module and a fourth voltage stabilizing module, wherein, The input end of the first power module is used to be electrically connected to an external power supply, the output end of the first power module is electrically connected to the input end of the second power module, the input end of the third power module and the input end of the fourth power module respectively, the output end of the second power module is electrically connected to the power end of the projection optical machine, the output end of the third power module is electrically connected to the input end of the voltage stabilizing circuit, and the output end of the fourth power module is electrically connected to the power end of the nozzle driving circuit; The input end of the first voltage stabilizing module, the input end of the second voltage stabilizing module, the input end of the third voltage stabilizing module and the input end of the fourth voltage stabilizing module are electrically connected to the output end of the third power supply module respectively, the output end of the first voltage stabilizing module is electrically connected to the power supply end of the main controller, the output end of the second voltage stabilizing module is electrically connected to the power supply end of the FPGA processor, the output end of the third voltage stabilizing module is electrically connected to the power supply end of the nozzle, and the output end of the fourth voltage stabilizing module is electrically connected to the power supply end of other working circuit modules with a power voltage of 5V in the color 3D printing control system except the main controller, the FPGA processor and the nozzle.

9. The color 3D printing control system according to claim 1, characterized in that: The light source is a projection light machine; the system also includes at least one device selected from the group consisting of a temperature sensor, a buzzer, a fan, and a scraper, wherein: The temperature sensor is electrically connected to the first input terminal of the main controller, and is used to send at least one of the temperature detection signal on the projection optical machine, the temperature detection signal on the nozzle, and the temperature detection signal on the printing platform to the main controller; The buzzer is electrically connected to the fourth output terminal of the main controller, and is used to emit an operation prompt tone according to a buzzer control instruction issued by the main controller; The fan is electrically connected to the fifth output terminal of the main controller, and is used to rotate or stop rotating according to the fan control instruction issued by the main controller, so as to dissipate heat and cool the color 3D printing control system; The scraper is electrically connected to the sixth output terminal of the main controller, and is used to scrape off excess resin on each printing layer of the model to be printed according to the resin scraping instruction issued by the main controller, so that the thickness of each printing layer of the model to be printed is the same.

10. A color 3D printer, characterized in that: The color 3D printer comprises a color 3D printing control system as claimed in any one of claims 1 to 9.

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