3D inkjet printing apparatus, control device and control method thereof

Abstract

The application provides a 3D inkjet printing device, a control device and a control method thereof, which can control the 3D inkjet printing device to use different radiation source control parameters for differentiated printing in different printing modes. Thus, the radiation provided by the radiation source can be more flexibly controlled, and the problem that the printed object is not completely cured due to insufficient radiation or the printed object is excessively cured due to excessive radiation during the printing process can be effectively prevented. Moreover, the radiation source is not always in an open state during the printing process and / or the control conditions of the radiation source for printing different objects are the same, so that the problems of energy waste, reduced service life of the radiation source, poor object forming precision caused by insufficient or excessive energy in the forming area can be avoided.

Description

Technical Field

[0001] This application relates to the field of 3D inkjet printing equipment technology, and in particular to a 3D inkjet printing device, control device and control method thereof. Background Technology

[0002] 3D inkjet printing equipment is a type of printing equipment that can print 3D models using additive manufacturing technology. Additive manufacturing technology can also be called 3D printing technology. In the process of printing 3D models, 3D inkjet printing equipment forms 3D models layer by layer and stacks them one by one to ultimately create the 3D model. It has advantages such as high forming efficiency, low material waste, effective cost savings in manufacturing, and the ability to create various complex and aesthetically pleasing 3D models.

[0003] Existing 3D inkjet printing equipment includes a radiation source, a print head, and leveling components. During the printing process, the radiation source is always on and / or the control conditions of the radiation source are the same for different objects being printed. This leads to problems such as energy waste, reduced lifespan of the radiation source, and poor object forming accuracy caused by insufficient or excessive energy in the forming area. Summary of the Invention

[0004] This application provides a 3D inkjet printing device, control device and control method to overcome the problems of energy waste, reduced lifespan of radiation source, and poor object forming accuracy caused by insufficient or excessive energy in the forming area in the prior art.

[0005] This application provides a control method for a 3D inkjet printing device. The 3D inkjet printing device includes a control device, a print head, a first radiation source, and a second radiation source, which are located on opposite sides of the print head. The control device executes the control method, which includes: determining a printing mode for a 3D model to be printed; the printing mode being one of the first and second printing modes, with different radiation source control parameters for the first and second printing modes; determining printing data for the 3D model based on its model data; and controlling the 3D inkjet printing device to print the 3D model based on the printing data in the printing mode. Therefore, the control method for the 3D inkjet printing device provided in this application can control the 3D inkjet printing device to use different radiation source control parameters for differentiated printing in different printing modes. This allows the optimal printing mode to be determined in advance before the 3D inkjet printing device prints the 3D model, thereby more flexibly controlling the radiation source to provide radiation and effectively preventing incomplete curing of the printed object due to insufficient radiation or over-curing due to excessive radiation during the printing process. This also avoids the problems of energy waste, reduced radiation source lifespan, and poor object forming accuracy caused by keeping the radiation source constantly on during the printing process or using the same control conditions for different objects. Furthermore, the control method provided in this application has simple control logic, effectively extending the radiation source lifespan while meeting the required forming accuracy, and also reducing the operating cost of 3D inkjet printing equipment.

[0006] In one embodiment of the first aspect of this application, the control device specifically acquires model data of a 3D model and determines the printing mode of the 3D model to be printed based on the model data. Therefore, in this embodiment, the control device can more automatically and intelligently determine the printing mode based on the model data of the 3D model to be printed, and make the determined printing mode more suitable for the current 3D model.

[0007] In one embodiment of the first aspect of this application, the control device specifically receives, through an operating interface, the printing mode of the 3D model to be printed, determined by the user based on the model data of the 3D model. Therefore, in this embodiment, the control device can determine the radiation source control parameters based on the received printing mode indicated by the user, thereby eliminating the need for calculations to determine the printing mode, reducing the computational load required by the control device, enhancing the user's control over the 3D inkjet printing equipment, and improving the user experience.

[0008] In one embodiment of the first aspect of this application, the model data includes at least one of the following: data format information, model structure information, and model color information.

[0009] In one embodiment of the first aspect of this application, the radiation source control parameters are used to control one of the first and second radiation sources to provide radiation in a first printing mode, or to control the first and second radiation sources to provide radiation in a second printing mode. Therefore, this embodiment avoids the problems of the radiation source being constantly on during printing and / or the control conditions of the radiation source being the same for printing different objects, which can lead to energy waste, reduced lifespan of the radiation source, and poor object forming accuracy due to insufficient or excessive energy in the forming area.

[0010] In one embodiment of the first aspect of this application, the 3D inkjet printing equipment further includes a leveling component. A first radiation source, the leveling component, a print head, and a second radiation source are arranged sequentially in a first scanning direction. A first printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation, and the second radiation source does not provide radiation; when the print head moves in the second scanning direction, neither the first nor the second radiation source provides radiation. A second printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation; when the print head moves in the second scanning direction, the second radiation source provides radiation. The first and second scanning directions are opposite to each other. Therefore, in this embodiment, in the second printing mode, during inkjet printing in the second scanning direction, controlling the second radiation source to provide radiation to the ejected molding material can further improve the positioning accuracy of the ink droplets, thereby further preventing ink droplets from penetrating or diffusing to adjacent positions at the target landing point, resulting in a clearer surface and richer surface details in the formed three-dimensional object.

[0011] In one embodiment of the first aspect of this application, the second printing mode further includes: the radiation intensity provided by the first radiation source when the print head moves in the first scanning direction is greater than the radiation intensity provided by the second radiation source when the print head moves in the second scanning direction. Therefore, in this embodiment, during inkjet printing in the second scanning direction, the radiation provided by the second radiation source will not completely solidify the molding material ejected by the print head. Furthermore, during inkjet printing in the first scanning direction, the leveling component can level the molding material ejected in the current stroke while also leveling the molding material ejected in the previous stroke, thereby further improving the surface accuracy of the material layer.

[0012] In one embodiment of the first aspect of this application, in printing mode, controlling a 3D inkjet printing device to print a 3D model based on printing data includes: when the print head is in the printing area of ​​the 3D model, controlling the print head to move at a preset speed at a uniform speed; in a first printing mode, controlling a first radiation source to provide radiation of a first preset intensity, or in a second printing mode, controlling the first radiation source to provide radiation of a first preset intensity and controlling a second radiation source to provide radiation of a second preset intensity.

[0013] In one embodiment of the first aspect of this application, in printing mode, controlling a 3D inkjet printing device to print a 3D model based on printing data further includes: after the print head moves out of the printing area of ​​the 3D model, controlling the print head to decelerate to a speed of 0; in the first printing mode, controlling a first radiation source to provide radiation of a third preset intensity, or in the second printing mode, controlling the first radiation source to provide radiation of a third preset intensity and controlling a second radiation source to provide radiation of a fourth preset intensity; the third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity. Therefore, in this embodiment, within the printing area, by controlling the radiation intensity provided by the radiation source in the deceleration region to be less than the radiation intensity provided in the uniform speed region, the consistency or substantially consistency of the radiation energy received by the molding material per unit area within the printing area is improved, thereby improving the consistency of the material properties of the three-dimensional object.

[0014] In one embodiment of the first aspect of this application, in printing mode, based on printing data, controlling a 3D inkjet printing device to print a 3D model further includes: after the print head moves out of the printing area of ​​the 3D model, controlling the print head to decelerate to a speed of 0; in the first printing mode, controlling a first radiation source to provide radiation of a first preset intensity, or in the second printing mode, controlling the first radiation source to provide radiation of the first preset intensity and controlling a second radiation source to provide radiation of a second preset intensity, and the deceleration of the first radiation source is less than the deceleration of the second radiation source. Therefore, in this embodiment, in the second printing mode, in the deceleration region within the printing area, by controlling the deceleration of the first radiation source to be less than the deceleration of the second radiation source, the time for the first radiation source to provide radiation in the deceleration region is longer than the time for the second radiation source to provide radiation in the deceleration region. This is beneficial to improve the consistency or substantially consistency of the radiation energy received by the molding material per unit area within the deceleration region. Moreover, the radiation energy received by the molding material per unit area within the deceleration region is higher than the radiation energy received by the molding material per unit area within the uniform speed region, thereby improving the degree of solidification around the three-dimensional object, improving the consistency of the material properties around the three-dimensional object, and improving the surface accuracy of the 3D model.

[0015] In one embodiment of the first aspect of this application, in a printing mode, based on printing data, controlling a 3D inkjet printing device to print a 3D model includes: in a first printing mode, in a first scanning direction, when a first radiation source is within the printing area of ​​the 3D model, controlling the first radiation source to pass through the printing area at a uniform speed and providing radiation of a first preset intensity; in a second printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, controlling the first radiation source to pass through the printing area at a uniform speed and providing radiation of a first preset intensity; and in the second scanning direction, when a second radiation source is within the printing area of ​​the 3D model, controlling the second radiation source to pass through the printing area at a uniform speed and providing radiation of a second preset intensity. Therefore, in this embodiment, within the printing area, by controlling the first and second radiation sources to pass through at a uniform speed, the radiation energy received by the molding material per unit area within the printing area is consistent or substantially consistent, thereby improving the consistency of the material properties of the three-dimensional object.

[0016] In one embodiment of the first aspect of this application, in the printing mode, based on the printing data, the 3D inkjet printing device is controlled to print a 3D model, which further includes: when the print head decelerates to 0 and before the print head enters the printing area of ​​the 3D model, the print head is controlled to accelerate in the opposite direction to a preset speed and move at a constant speed at the preset speed; in the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity.

[0017] A second aspect of this application provides a 3D inkjet printing apparatus, comprising: a printhead, a first radiation source, a second radiation source, and a control device; the first radiation source and the second radiation source are respectively located on both sides of the printhead; the control device is used to execute a control method for the 3D inkjet printing apparatus as described in any of the first aspects of this application.

[0018] A third aspect of this application provides a control device for a 3D inkjet printing equipment, comprising: a first determining module for determining a printing mode of a 3D model to be printed; the printing mode being one of a first printing mode and a second printing mode, wherein the radiation source control parameters of the first printing mode and the second printing mode are different; a second determining module for determining printing data of the 3D model based on the model data of the 3D model; and a control module for controlling the 3D inkjet printing equipment to print the 3D model based on the printing data in the printing mode.

[0019] In one embodiment of the third aspect of this application, the first determining module is used to acquire model data of a 3D model and determine the printing mode of the 3D model to be printed based on the model data of the 3D model.

[0020] In one embodiment of the third aspect of this application, the first determining module is used to receive, through an operation interface, the printing mode of the 3D model to be printed, determined by the user based on the model data of the 3D model.

[0021] In one embodiment of the third aspect of this application, the model data includes at least one of the following: data format information, model structure information, and model color information.

[0022] In one embodiment of the third aspect of this application, the radiation source control parameters are used to control one of the first and second radiation sources to provide radiation in a first printing mode, or to control the first and second radiation sources to provide radiation in a second printing mode.

[0023] In one embodiment of a third aspect of this application, the 3D inkjet printing apparatus further includes a leveling component. The first radiation source, the leveling component, the print head, and the second radiation source are arranged sequentially in the first scanning direction. The first printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the second radiation source does not provide radiation; when the print head moves in the second scanning direction, neither the first nor the second radiation source provides radiation. The second printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation; when the print head moves in the second scanning direction, the second radiation source provides radiation. The first scanning direction and the second scanning direction are opposite to each other.

[0024] In one embodiment of the third aspect of this application, the second printing mode further includes: the radiation intensity provided by the first radiation source when the print head moves in the first scanning direction is greater than the radiation intensity provided by the second radiation source when the print head moves in the second scanning direction.

[0025] In one embodiment of the third aspect of this application, the control module is configured to control the print head to move at a preset speed at a uniform speed when the print head is in the printing area of ​​the 3D model; and to control the first radiation source to provide radiation of a first preset intensity in a first printing mode, or to control the first radiation source to provide radiation of a first preset intensity and the second radiation source to provide radiation of a second preset intensity in a second printing mode.

[0026] In one embodiment of the third aspect of this application, the control module is configured to: control the print head to decelerate to a speed of 0 after the print head moves out of the printing area of ​​the 3D model; control the first radiation source to provide radiation of a third preset intensity in a first printing mode, or control the first radiation source to provide radiation of a third preset intensity and control the second radiation source to provide radiation of a fourth preset intensity in a second printing mode; the third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity.

[0027] In one embodiment of the third aspect of this application, the control module is configured to: control the print head to decelerate to a speed of 0 after the print head moves out of the printing area of ​​the 3D model; control the first radiation source to provide radiation of a first preset intensity in a first printing mode, or control the first radiation source to provide radiation of a first preset intensity and control the second radiation source to provide radiation of a second preset intensity in a second printing mode, wherein the deceleration of the first radiation source is less than the deceleration of the second radiation source.

[0028] In one embodiment of a third aspect of this application, the control module is configured to, in a first printing mode, in a first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, control the first radiation source to pass through the printing area at a uniform speed and provide radiation of a first preset intensity; in a second printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, control the first radiation source to pass through the printing area at a uniform speed and provide radiation of a first preset intensity; and in the second scanning direction, when the second radiation source is within the printing area of ​​the 3D model, control the second radiation source to pass through the printing area at a uniform speed and provide radiation of a second preset intensity.

[0029] In one embodiment of the third aspect of this application, the control module is configured to: when the print head decelerates to 0 and before the print head enters the printing area of ​​the 3D model, control the print head to accelerate to a preset speed in the opposite direction and move at a constant speed at the preset speed; in a first printing mode, control the first radiation source to provide radiation of a first preset intensity, or in a second printing mode, control the first radiation source to provide radiation of a first preset intensity and control the second radiation source to provide radiation of a second preset intensity.

[0030] A fourth aspect of this application provides an electronic device, including: a processor and a memory connected in communication; wherein the memory stores a computer program, and when the processor executes the computer program, the processor performs the method as described in any of the first aspects of this application.

[0031] The fifth aspect of this application provides a storage medium storing computer instructions, which, when executed by a computer, cause the computer to perform the method as described in any of the first aspects of this application. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of the 3D inkjet printing equipment provided in this application;

[0034] Figure 2 A flowchart illustrating an embodiment of the control method for the 3D inkjet printing equipment provided in this application;

[0035] Figure 3 A schematic diagram of the printing mode and radiation source control parameters provided for this application;

[0036] Figure 4 A schematic diagram of an operating interface provided for this application;

[0037] Figure 5 A schematic diagram of the structure of a 3D inkjet printing device provided in this application;

[0038] Figure 6 A schematic diagram of the printing area of ​​the 3D inkjet printing device provided in this application;

[0039] Figure 7 Another schematic diagram of the printing area of ​​the 3D inkjet printing device provided in this application;

[0040] Figure 8 A schematic diagram of a control device for a 3D inkjet printing device provided in this application. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] Figure 1 This is a schematic diagram of the structure of an embodiment of the 3D inkjet printing device provided in this application, as shown below. Figure 1 The 3D inkjet printing equipment shown includes: a control device 10, a first radiation source 21, a second radiation source 22, a print head 3, a leveling component 4, a letter carriage 5, a forming platform 8, a lifting mechanism 9, and a chamber wall 12.

[0045] like Figure 1 As shown, the first radiation source 21, the second radiation source 22, the print head 3, the leveling component 4, the printing carriage 5, the forming platform 8, and the lifting mechanism 9 are all located inside the chamber wall 12.

[0046] The first radiation source 21, the second radiation source 22, the print head 3, and the leveling component 4 are mounted on the print carriage 5.

[0047] The carriage 5 can reciprocate on the X-beam of the printing equipment, which is located inside the chamber wall 12 of the 3D inkjet printing equipment. Figure 1 The X-direction setting shown is in Figure 1 Not shown in the image.

[0048] As the print head 5 reciprocates, the print head 3 can be used to spray molding material 6 onto the forming platform 8 to form the layers 7n of the 3D model. The forming platform 8 is used to support the sprayed molding material 6 and the 3D model 7 formed after printing.

[0049] In one embodiment, the printhead 3 can be a piezoelectric inkjet printhead or a thermal bubble inkjet printhead; it can be a single-channel printhead, a dual-channel printhead, or a combination of single-channel and dual-channel printhead. This application does not limit the specific implementation of the printhead 3, as long as it can achieve normal inkjet printing.

[0050] In one embodiment, the molding material 6 may specifically include model material and support material. The model material is used to print the 3D model 7 itself to form the object to be printed, and the support material is used to provide support for the 3D model 7 during the printing process to ensure the printing accuracy of the 3D model. In this application embodiment, to meet printing requirements, support material may also be used to print part of the object to be printed, and / or model material may be used to print part of the support structure; no limitations are imposed in this application.

[0051] The first radiation source 21 and the second radiation source 22 are disposed on both sides of the printhead 3. The first radiation source 21 and the second radiation source 22 can be used to provide radiation to the molding material 6 ejected from the printhead 3, so that the molding material 6 is cured to form a cured material layer 7n.

[0052] In one embodiment, such as Figure 1The 3D inkjet printing equipment shown also includes a leveling component 4. The leveling component 4 can be used to level the molding material 6 ejected from the printhead 3. Preferably, the length of the leveling component 4 in the direction of the nozzle array of the printhead 3 is longer than the distance between the two nozzles at both ends in the direction of the nozzle array of the printhead 3; this helps the leveling component 4 to level the ejected material in the current stroke while also leveling the material ejected in the previous stroke.

[0053] In one embodiment, the leveling component 4 is disposed between the first radiation source 21 and the print head 3.

[0054] In one embodiment, the leveling component 4 may include a leveling roller, which, through rotation, removes excess molding material 6 distributed to the molding platform 8 to improve the accuracy of the material layer 7n, thereby improving the molding accuracy of the 3D model 7.

[0055] The lifting mechanism 9 is used to change the relative distance between the forming platform 8 and the print head 3 in the Z direction in the figure, so as to print layer 7n of the 3D model layer by layer.

[0056] In one embodiment, the forming platform 8 can be stationary in the Z direction, and the lifting mechanism can be used to change the position of the print head 3 in the Z direction, thereby adjusting the distance between the print head 3 and the forming platform 8 in the Z direction.

[0057] Or, in such Figure 1 In the embodiment shown, the print head 3 is stationary in the Z direction, so the lifting mechanism 9 can be used to change the position of the forming platform 8 in the Z direction, thereby adjusting the distance between the print head 3 and the forming platform 8 in the Z direction.

[0058] This application does not limit the driving method and driving structure of the elevator 9.

[0059] The control device 10 can be used to control the 3D inkjet printing equipment to print the 3D model 7. The control device 10 can be an electronic device such as a computer or server, or it can also be a processing circuit set in the 3D inkjet printing equipment, such as a CPU, MCU, SOC, or other processor.

[0060] This application also provides a control method for a 3D inkjet printing device, which can be achieved by, for example... Figure 1 The control device 10 shown is executed.

[0061] Figure 2 This is a schematic flowchart of an embodiment of the control method for the 3D inkjet printing equipment provided in this application. Figure 2 The control methods shown include:

[0062] S101: The control device 10 determines the printing mode of the 3D model to be printed. The printing mode is one of a first printing mode and a second printing mode. The radiation source control parameters of the first printing mode and the second printing mode are different. The radiation source control parameters refer to the control parameters used by the control device 10 when controlling the first radiation source 21 and the second radiation source 22.

[0063] It is understandable that the first printing mode and the second printing mode are executed by the 3D inkjet printer in different printing jobs. Different printing jobs correspond to different forming processes. The execution of the first and second printing modes in different printing jobs specifically means that only one printing mode, such as the first printing mode or the second printing mode, is executed in a single printing job; that is, only the first printing mode or the second printing mode is executed in the same forming process; and at least one object is printed in one forming process or one printing job.

[0064] In one embodiment, radiation source control parameters corresponding to different printing modes are stored in a memory, enabling the control device 10 to obtain these parameters from the memory. The memory can be located internally within the control device 10, or it can be an external device.

[0065] Figure 3 A schematic diagram illustrating the printing mode and radiation source control parameters provided in this application. (See diagram below.) Figure 3 As shown, the memory can store the correspondence between the first printing mode and the first radiation source control parameters, and the correspondence between the second printing mode and the second radiation source control parameters. Then, when the control device 10 determines one of the first or second printing modes, it can... Figure 3 The correspondence shown determines the first radiation source control parameters corresponding to the first printing mode, or determines the second radiation source control parameters corresponding to the second printing mode.

[0066] It is understood that the control parameters of the first radiation source are different from those of the second radiation source. For example, the control device 10 controls one of the first radiation source 21 and the second radiation source 22 to provide radiation in a single printing job according to the first radiation source control parameters; the control device 10 also controls the two radiation sources 21 and 22 to provide radiation separately in a single printing job according to the second radiation source control parameters.

[0067] In one specific implementation of S101, the control device 10 can acquire the model data of the 3D model to be printed, and determine the printing mode of the 3D model to be printed as a first printing mode or a second printing mode based on the model data. In one embodiment, the model data of the 3D model includes at least one of: data format information, model structure information, and model color information. Therefore, in this embodiment, the control device 10 can more automatically and intelligently determine the printing mode based on the model data of the 3D model to be printed, and make the determined printing mode more suitable for the current 3D model.

[0068] In another specific implementation of S101, the control device 10 can receive the printing mode of the 3D model determined by the user based on the model data of the 3D model through an operating interface. For example, Figure 4 This is a schematic diagram of an operating interface provided in this application. (For example...) Figure 4 The user interface shown can be provided by the control device 10. For example, the control device 10 can be connected to a display device such as a monitor, and the user interface provided by the monitor can display information corresponding to the two printing modes. Subsequently, the control device 10 receives the printing mode determined by the user based on the model data of the 3D model through the user interface provided by the monitor. Therefore, in this embodiment, the control device 10 can determine the radiation source control parameters according to the printing mode indicated by the user, thereby eliminating the need for calculations to determine the printing mode, reducing the computational load required by the control device 10, enhancing the user's control over the 3D inkjet printing equipment, and improving the user experience.

[0069] S102: The control device 10 determines the printing data of the 3D model based on the model data of the 3D model to be printed. The printing data includes data from the control device 10 controlling the print head 3 to perform inkjet printing, such as controlling whether the print head 3 sprays ink, controlling the position of the ink spray from the print head 3, and the type of inkjet material, such as color. This application embodiment does not limit the specific composition and settings of the printing data.

[0070] S103: In the printing mode determined in S101, based on the printing data determined in S102, the control device 10 controls the 3D inkjet printing equipment to print the 3D model.

[0071] For example, in the first printing mode, when the control device 10 controls the print head 3 to inkjet print according to the printing data, it controls one of the first radiation source 21 and the second radiation source 22 to provide radiation; or, in the second printing mode, when the control device 10 controls the print head 3 to inkjet print according to the printing data, it controls two of the first radiation source 21 and the second radiation source 22 to provide radiation respectively.

[0072] In summary, the control method for a 3D inkjet printing device provided in this application embodiment can control the 3D inkjet printing device to use different radiation source control parameters for differentiated printing in different printing modes. This allows the optimal printing mode to be determined in advance before printing the 3D model, enabling more flexible control of the radiation source and effectively preventing incomplete curing due to insufficient radiation or over-curing due to excessive radiation during the printing process. It also avoids problems such as the radiation source being constantly on during printing and / or the same control conditions for different objects, which can lead to energy waste, reduced radiation source lifespan, and poor object forming accuracy due to insufficient or excessive energy in the forming area. Furthermore, the control logic of the method provided in this application embodiment is simple, effectively extending the lifespan of the radiation source while meeting the requirements for object forming accuracy, and also reducing the operating cost of the 3D inkjet printing device.

[0073] Figure 5 This is a structural schematic diagram of a 3D inkjet printing device provided in this application. (As shown in...) Figure 5 In the illustrated embodiment, the first scanning direction in the negative X direction is denoted as the negative scanning direction, and the second scanning direction in the positive X direction is denoted as the positive scanning direction. The first radiation source 21, the leveling component 4, the print head 3, and the second radiation source 22 of the 3D inkjet printing equipment are arranged sequentially along the first scanning direction. All of these components are mounted on the carriage 5. When the carriage 5 reciprocates on the X-beam, the first radiation source 21, the leveling component 4, the print head 3, and the second radiation source 22 also reciprocate between the positive and negative scanning directions. During this reciprocating motion, the print head 3 provides the molding material, and one or both of the first and second radiation sources 21 and 22 provide radiation.

[0074] In one embodiment, the control device 10 can be used to control the movement of the print head 5, control the print head 3 to provide molding material, and control one or both of the first radiation source 21 and the second radiation source 22 to provide radiation.

[0075] Then for such Figure 5In the 3D inkjet printing equipment shown, the control device 10, in the first printing mode, controls the print head 3 to perform inkjet printing according to the printing data, controls the first radiation source 21 to provide radiation, and simultaneously controls the second radiation source 22 to not provide radiation. Specifically, when the carriage 5 moves in the negative scanning direction, the control device 10 controls the print head 3 to perform inkjet printing, controls the leveling component 4 to level the ejected molding material 6, and controls the first radiation source 21 to provide radiation to the leveled material layer 7n to solidify the material layer, while controlling the second radiation source 22 to not provide radiation. When the carriage 5 moves in the positive scanning direction, the control device 10 controls the print head 3 to perform inkjet printing, controls the leveling component 4 not to level the ejected molding material 6, and controls both the first radiation source 21 and the second radiation source 22 to not provide radiation.

[0076] For example Figure 5 In the 3D inkjet printing equipment shown, the control device 10, in the second printing mode, controls the print head 3 to perform inkjet printing based on printing data, and controls the first radiation source 21 and the second radiation source 22 to provide radiation. Specifically, when the carriage 5 moves in the negative scanning direction, the control device 10 controls the print head 3 to perform inkjet printing, controls the leveling component 4 to level the ejected molding material 6, and controls the first radiation source 21 to provide radiation to the leveled material layer 7n to solidify the material layer, while controlling the second radiation source 22 not to provide radiation. When the carriage 5 moves in the positive scanning direction, the control device 10 controls the print head 3 to perform inkjet printing, controls the second radiation source 22 to provide radiation to the ejected molding material 6 under the control of the control device 10, and controls the first radiation source 21 not to provide radiation, and controls the leveling component 4 not to perform leveling work. Therefore, in the second printing mode, during the forward inkjet printing process, the control device 10 controls the second radiation source 22 to provide radiation to the ejected molding material 6, which can further improve the positioning accuracy of the ink droplets and further prevent the ink droplets from penetrating or spreading to adjacent positions at the target landing point, so that the surface of the formed three-dimensional object has higher clarity and richer surface details.

[0077] In one embodiment, in the second printing mode, when the print head 3 moves in the negative scanning direction, the radiation intensity provided by the first radiation source 21 is greater than the radiation intensity provided by the second radiation source 22 when the print head 3 moves in the positive scanning direction. This ensures that during inkjet printing in the positive scanning direction, the radiation provided by the second radiation source 22 will not cause the molding material 6 ejected by the print head 3 to completely solidify. Furthermore, during inkjet printing in the reverse scanning direction, the leveling component 4 can level the molding material 6 ejected in the current stroke while also leveling the molding material 6 ejected in the previous stroke, further improving the surface accuracy of the material layer 7n.

[0078] In one embodiment, the length of the leveling component 4 in the stepping direction is longer than the length of the print head. The stepping direction is a horizontal direction perpendicular to the scanning direction, i.e., the Y direction.

[0079] Figure 6 This is a schematic diagram of the printing area of ​​the 3D inkjet printing equipment provided in this application. Figure 6 The circular area shown is the printing area. The movement path of printhead 3 during material layer printing is shown by the arrows in the figure. The X direction is the positive scanning direction, and the negative X direction is the negative scanning direction. One movement in one scanning direction is simply called a pass. After the control device 10 controls printhead 3 to complete pass 1 printing in the X direction, it controls printhead 3 to step one pass in the Y direction. The control device 10 then controls printhead 3 to perform the next stroke, pass 2, inkjet printing in the -X direction. This movement is repeated until a layer of the three-dimensional object is formed. The Y direction is also called the stepping direction.

[0080] In the 3D inkjet printing device provided in this application embodiment, the printing area for printing the 3D model specifically refers to the area where the print head 3 performs inkjet printing. Therefore, when the print head 3 is within the printing area of ​​the 3D model, the control device 10 controls the print head 3 to move at a preset speed at a uniform speed.

[0081] refer to Figure 6 When the print head 3 is within the printing area of ​​the 3D model, in the first printing mode, when the control device 10 controls the carriage 5 to move in the forward scanning directions such as pass 1 and pass 3, the control device 10 controls the print head 3, the first radiation source 21, and the second radiation source 22 to move at a preset speed uniformly within the printing area, and controls both the first radiation source 21 and the second radiation source 22 to not provide radiation. When the carriage 5 moves in the negative scanning directions such as pass 2 and pass 4, the control device 10 controls the print head 3, the first radiation source 21, and the second radiation source 22 to move at a preset speed uniformly within the printing area, and controls the first radiation source 21 to provide radiation of a first preset intensity, and controls the second radiation source 22 to not provide radiation.

[0082] When the print head 3 is within the printing area of ​​the 3D model, in the second printing mode, the control device 10 controls the print carriage 5 to move in the forward scanning directions such as pass 1 and pass 3. During this movement, the control device 10 controls the print head 3, the first radiation source 21, and the second radiation source 22 to move at a preset speed within the printing area, and controls the first radiation source 21 to not provide radiation while controlling the second radiation source 22 to provide radiation of a second preset intensity. Similarly, when the print carriage 5 moves in the negative scanning directions such as pass 2 and pass 4, the control device 10 controls the print head 3, the first radiation source 21, and the second radiation source 22 to move at a preset speed within the printing area, and controls the first radiation source 21 to provide radiation of a first preset intensity while controlling the second radiation source 22 to not provide radiation.

[0083] In one embodiment, after the print head 3 completes one stroke of inkjet printing and moves out of the printing area of ​​the 3D model, the control device 10 also controls the print head 3, the first radiation source 21 and the second radiation source 22 to decelerate to 0, that is, controls the carriage 5 to decelerate to 0, and then moves one pass in the stepping direction to perform the next stroke of inkjet printing.

[0084] In another embodiment, after the print head 3 completes one stroke of inkjet printing and moves out of the printing area of ​​the 3D model, in the first printing mode, in the first scanning direction, for example in the negative scanning directions such as pass2 and pass4, the control device 10 controls the carriage 5 to move in the negative scanning directions such as pass2 and pass4, while the control device 10 controls the first radiation source 21 to move at a preset speed uniformly in the printing area, and controls the first radiation source 21 to provide radiation of a first preset intensity, and controls the second radiation source 22 not to provide radiation; in the second scanning direction, for example in the positive scanning directions such as pass1 and pass3, the control device 10 controls the carriage 5 to move in the positive scanning directions such as pass1 and pass3, while the control device 10 controls the first radiation source 21 not to provide radiation, and controls the second radiation source 22 not to provide radiation.

[0085] After the print head 3 completes one inkjet printing stroke and moves out of the printing area of ​​the 3D model, in the second printing mode, the control device 10 controls the carriage 5 to move in the forward scanning directions such as pass 1 and pass 3. During this movement, the control device 10 controls the second radiation source 22 to move at a preset speed within the printing area, and controls the first radiation source 21 to not provide radiation while controlling the second radiation source 22 to provide radiation of a second preset intensity. Similarly, during the negative scanning directions such as pass 2 and pass 4, the control device 10 controls the first radiation source 21 to move at a preset speed within the printing area, and controls the first radiation source 21 to provide radiation of a first preset intensity while controlling the second radiation source 22 to not provide radiation.

[0086] In this embodiment, in either the first or second printing mode, after the control device 10 controls the first radiation source 21 or the second radiation source 22 to move out of the printing area at a constant speed, the control device 10 also controls the print head 3 to decelerate to zero, and then moves one pass in the stepping direction to perform the next inkjet printing stroke. In this embodiment, by controlling the first radiation source 21 and the second radiation source 22 to pass through the printing area at a constant speed, the radiation energy received by the molding material per unit area within the printing area is kept consistent or substantially consistent, thereby improving the consistency of the material properties of the three-dimensional object.

[0087] Figure 7 Another schematic diagram of the printing area of ​​the 3D inkjet printing device provided in this application. (See diagram below.) Figure 7 As shown, in both the positive and negative scanning directions, there is a certain spatial distance between the first radiation source 21, the second radiation source 22, and the print head 3. The relative distance between the first radiation source 21 and the print head 3 is L2, and the relative distance between the second radiation source 22 and the print head 3 is L1. During the current stroke, after the print head finishes inkjet printing, it decelerates. The radiation sources also decelerate in the inkjet printing area. Therefore, when the control device 10 controls the print head 3 to decelerate, in the inkjet printing area, the control device 10 controls the first radiation source 21 and the second radiation source 22 to reduce their radiation intensity. Specifically, when the control device 10 controls the print head 3 to decelerate, in the inkjet printing area, in the first printing mode, the control device 10 controls the first radiation source 21 to provide radiation of a third preset intensity, or in the second printing mode, controls the first radiation source 21 to provide radiation of a third preset intensity and controls the second radiation source 22 to provide radiation of a fourth preset intensity; wherein the third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity.

[0088] For example, combining Figure 7When the control device 10 controls the print head 3 to move out of the printing area in the negative scanning direction in the first printing mode, the control device 10 controls the third radiation intensity provided by the first radiation source 21 in the deceleration region (i.e., within the travel range of L2) to be less than the first radiation intensity provided in the uniform speed region. When the control device 10 controls the print head 3 to move out of the printing area in the negative scanning direction in the second printing mode, the control device 10 controls the third radiation intensity provided by the first radiation source 21 in the deceleration region (i.e., within the travel range of L2) to be less than the first radiation intensity provided in the uniform speed region. When the control device 10 controls the print head 3 to move out of the printing area in the positive scanning direction in the second printing mode, the control device 10 controls the fourth radiation intensity provided by the second radiation source 22 in the deceleration region (i.e., within the travel range of L1) to be less than the second radiation intensity provided in the uniform speed region. In this embodiment, by controlling the radiation intensity provided by the radiation source in the deceleration region to be less than the radiation intensity provided in the uniform speed region within the printing area, the radiation energy received by the molding material per unit area within the printing area is kept consistent or substantially consistent, thereby improving the consistency of the material properties of the three-dimensional object.

[0089] In one embodiment, when the control device 10 controls the printhead 3 to decelerate, in the inkjet printing area, the control device 10 controls the first radiation source 21 and the second radiation source 22 to have different deceleration rates. Specifically, when the control device 10 controls the printhead 3 to decelerate, in the inkjet printing area, in a first printing mode, the control device 10 controls the first radiation source 21 to provide radiation of a first preset intensity, or in a second printing mode, controls the first radiation source 21 to provide radiation of the first preset intensity and controls the second radiation source 22 to provide radiation of a second preset intensity, and the deceleration rate of the first radiation source is less than the deceleration rate of the second radiation source. Specifically, when the control device 10 controls the print head 3 to decelerate, in the inkjet printing area, in the second printing mode, in the negative scanning direction, the control device 10 controls the first radiation source 21 to decelerate within the deceleration region (L2) less than the second radiation source 22 to decelerate within the deceleration region (L1) in the positive scanning direction. This makes the time for the first radiation source 21 to provide radiation in the deceleration region longer than the time for the second radiation source 22 to provide radiation in the deceleration region. This helps to improve the consistency of the radiation energy received by the molding material per unit area within the deceleration region. Moreover, the radiation energy received by the molding material per unit area within the deceleration region is higher than the radiation energy received by the molding material per unit area within the uniform speed region. This improves the degree of solidification around the three-dimensional object, improves the consistency of the material properties around the three-dimensional object, and improves the surface accuracy of the 3D model.

[0090] In one embodiment, after the control device 10 further controls the print head 3 to decelerate to 0 and move a distance of one pass in the stepping direction, the control device 10 further controls the print head 3 to accelerate in the opposite direction to a preset speed before entering the printing area of ​​the 3D model, and then moves into the printing area at a constant speed at the preset speed. Furthermore, in the first printing mode, while the print head 3 is moving at a constant speed at the preset speed, the control device 10 also controls the first radiation source 21 to provide radiation of a first preset intensity; or, in the second printing mode, it controls the first radiation source 21 to provide radiation of the first preset intensity and controls the second radiation source 22 to provide radiation of a second preset intensity.

[0091] In one embodiment, the control device 10 can specifically process the model data of the 3D model to obtain printing data corresponding to the model data. For example, the model data includes data format information, model structural information, and / or model color information. Specifically, the data format information refers to the data format of the model data, including data formats with color attributes and data formats without color attributes, such as STL format, PLY format, OBJ format, WRL format, etc., which can be recognized by slicing software. Among them, STL format is a data format without color attributes, while PLY format, OBJ format, and WRL format are data formats with color attributes. The structural information of the model represents the shape of the model, which is a closed curved surface pieced together by a series of triangular facets. Generally, when the shape of the model is simple, the number of triangular facets per unit area is small. When the shape of the model is more complex, with more dendritic structures, protrusions, etc. on the surface, the number of triangular facets per unit area is large.

[0092] In one embodiment, the first printing mode provided in this application can be referred to as the normal printing mode, and the second printing mode as the texture printing mode or the detail printing mode. Before printing the 3D model, the user can select a suitable printing mode, such as the first printing mode or the second printing mode, based on the model data of the 3D object. Specifically, when the data format of the 3D object model data is a data format without color attributes, such as STL format, the first printing mode is selected; when the data format of the 3D object model data is a data format with color attributes, such as PLY format, OBJ format, or WRL format, the second printing mode is preferentially selected regardless of the complexity of the 3D object structure; when the 3D object is a model with a simple structure, i.e., the number of triangular faces per unit area is less than a specified threshold and the data format is a data format without color attributes, such as STL format, the first printing mode is selected; when the 3D object is a 3D model with a complex structure, i.e., the number of triangular faces per unit area is greater than a specified threshold, the second printing mode is selected. The specified threshold in this application is an empirical value, or it can be determined by the user based on their personal perception of the complexity of the object to be printed, thereby determining whether to select the first printing mode or the second printing mode.

[0093] In one embodiment, the control device 10 can be used to perform slicing and layering processing on the acquired model data of a three-dimensional object using slicing software to obtain slice layer data, and to obtain layer printing data by processing the slice layer data.

[0094] In one embodiment, when the control device 10 determines the printing mode in S101 using the model data of the 3D model, if the data format of the model data of the three-dimensional object is a data format without color attributes, such as STL format, the printing mode is determined to be the first printing mode; if the data format of the model data of the three-dimensional object is a data format with color attributes, the printing mode is determined to be the second printing mode.

[0095] In one embodiment, when the control device 10 determines the printing mode in S101 using the model data of the 3D model, if the data format of the model data of the 3D object is a data format without color attributes and the 3D object is a simple object, the printing mode is determined to be the first printing mode; if the data format of the model data of the 3D object is a data format without color attributes but the 3D object is a complex object, the second printing mode is selected; if the data format of the model data of the 3D object is a data format with color attributes, the printing mode is determined to be the second printing mode.

[0096] In the foregoing embodiments, the control methods and steps executed by the control device of the 3D inkjet printing equipment provided in this application have been described. To realize the functions of the control methods provided in the embodiments of this application, the control device, as the executing entity, may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0097] For example, Figure 8 This application provides a control device for a 3D inkjet printing device, which can be used to execute the control method for the 3D inkjet printing device provided in any of the claims of this application. For example, the control device 100 includes: a first determining module 1001, a second determining module 1002, and a control module 1003. The first determining module 1001 is used to determine the printing mode of the 3D model to be printed; the second determining module 1002 is used to determine the printing data of the 3D model based on the model data of the 3D model; and the control module 1003 is used to control the 3D inkjet printing device to print the 3D model based on the printing data in the printing mode.

[0098] In one embodiment, the first determining module 1001 is used to acquire model data of the 3D model and determine the printing mode of the 3D model to be printed based on the model data of the 3D model.

[0099] In one embodiment, the first determining module 1001 is used to receive, through an operation interface, the printing mode of the 3D model to be printed, determined by the user based on the model data of the 3D model.

[0100] In one embodiment, the model data includes at least one of the following: data format information, model structure information, and model color information.

[0101] In one embodiment, the radiation source control parameters are used to control one of the first and second radiation sources to provide radiation in a first printing mode, or to control the first and second radiation sources to provide radiation in a second printing mode.

[0102] In one embodiment, the 3D inkjet printing device further includes a leveling component. The first radiation source, the leveling component, the print head, and the second radiation source are arranged sequentially in the first scanning direction. The first printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the second radiation source does not provide radiation; when the print head moves in the second scanning direction, neither the first nor the second radiation source provides radiation. The second printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation; when the print head moves in the second scanning direction, the second radiation source provides radiation. The first and second scanning directions are opposite to each other.

[0103] In one embodiment, the second printing mode further includes: the radiation intensity provided by the first radiation source when the print head moves in the first scanning direction is greater than the radiation intensity provided by the second radiation source when the print head moves in the second scanning direction.

[0104] In one embodiment, the control module 1003 is configured to control the print head to move at a preset speed at a uniform speed when the print head is in the printing area of ​​the 3D model; and to control the first radiation source to provide radiation of a first preset intensity in a first printing mode, or to control the first radiation source to provide radiation of a first preset intensity and the second radiation source to provide radiation of a second preset intensity in a second printing mode.

[0105] In one embodiment, the control module 1003 is used to control the print head to decelerate to a speed of 0 after the print head moves out of the printing area of ​​the 3D model; in a first printing mode, control the first radiation source to provide radiation of a third preset intensity, or in a second printing mode, control the first radiation source to provide radiation of a third preset intensity and control the second radiation source to provide radiation of a fourth preset intensity; the third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity.

[0106] In one embodiment, the control module 1003 is used to control the print head to decelerate to a speed of 0 after the print head moves out of the printing area of ​​the 3D model; in a first printing mode, control the first radiation source to provide radiation of a first preset intensity, or in a second printing mode, control the first radiation source to provide radiation of a first preset intensity and control the second radiation source to provide radiation of a second preset intensity, wherein the deceleration of the first radiation source is less than the deceleration of the second radiation source.

[0107] In one embodiment, the control module 1003 is configured to, in a first printing mode, in a first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, control the first radiation source to pass through the printing area at a constant speed and provide radiation of a first preset intensity; in a second printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, control the first radiation source to pass through the printing area at a constant speed and provide radiation of a first preset intensity; and in the second scanning direction, when the second radiation source is within the printing area of ​​the 3D model, control the second radiation source to pass through the printing area at a constant speed and provide radiation of a second preset intensity.

[0108] In one embodiment, the control module 1003 is configured to: when the print head decelerates to 0 and before the print head enters the printing area of ​​the 3D model, control the print head to accelerate to a preset speed in the opposite direction and move at a constant speed at the preset speed; in a first printing mode, control the first radiation source to provide radiation of a first preset intensity, or in a second printing mode, control the first radiation source to provide radiation of a first preset intensity and control the second radiation source to provide radiation of a second preset intensity.

[0109] The implementation method and principle of the control device for the 3D inkjet printing equipment provided in this application embodiment can be referred to the description in the aforementioned control method for the 3D inkjet printing equipment, and will not be repeated here.

[0110] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. These modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. They can be separate processing elements, integrated into a chip within the device, or stored as program code in the device's memory, invoked and executed by a processing element. The implementation of other modules is similar. Furthermore, these modules can be fully or partially integrated together, or implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0111] For example, these modules can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented by a processing element calling program code, that processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0112] In the above embodiments, the steps performed by the control device can be implemented entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks (SSDs)).

[0113] This application also provides an electronic device, including a processor and a memory. The processor and the memory are communicatively connected. The memory stores a computer program. When the processor executes the computer program, it can perform the steps of any of the control methods executed by the control device in the foregoing embodiments of this application.

[0114] This application also provides a computer-readable storage medium storing computer instructions that, when executed, can be used to perform steps of a control method executed by a control device as described in any of the foregoing embodiments of this application.

[0115] This application also provides a chip for executing instructions, the chip being used to perform the steps of any of the control methods executed by the control device as described above in this application.

[0116] This application also provides a computer program product, which includes a computer program stored in a storage medium. At least one processor can read the computer program from the storage medium. When the at least one processor executes the computer program, it can implement the steps of any of the control methods executed by the control device described above in this application.

[0117] In one embodiment, the control device provided in this application can be any one of a pulse-width modulation (PWM) controller, a central processing unit (CPU), other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate and transistor logic devices.

[0118] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, magnetic disk, or optical disk.

[0119] Those skilled in the art will understand that, for the purpose of illustrating the technical solution of this application, the embodiments of this application are described separately by functional modules, and the circuit devices in each module may partially or completely overlap, which is not intended to limit the scope of protection of this application.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A control method for a 3D inkjet printing device, the 3D inkjet printing device comprising: The system comprises a control device, a printhead, a first radiation source, a second radiation source, and a leveling component, wherein the first radiation source, the leveling component, the printhead, and the second radiation source are arranged sequentially in a first scanning direction; the control device is used to execute the control method, characterized in that the control method includes: The printing mode of the 3D model to be printed is determined, and either the first printing mode or the second printing mode is executed in the same molding process; the printing mode is one of the first printing mode and the second printing mode, and the radiation source control parameters of the first printing mode and the second printing mode are different; Based on the model data of the 3D model, determine the printing data of the 3D model; In the printing mode, based on the printing data, the 3D inkjet printing device is controlled to print the 3D model; The first printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the second radiation source does not provide radiation, and the leveling component performs leveling; when the print head moves in the second scanning direction, neither the first radiation source nor the second radiation source provides radiation, and the leveling component does not perform leveling. The second printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the leveling component performs leveling; when the print head moves in the second scanning direction, the second radiation source provides radiation and the leveling component does not perform leveling; wherein the first scanning direction and the second scanning direction are opposite to each other; The second printing mode further includes: when the print head moves in the first scanning direction, the radiation intensity provided by the first radiation source is greater than the radiation intensity provided by the second radiation source when the print head moves in the second scanning direction.

2. The control method according to claim 1, characterized in that, The process of determining the printing mode of the 3D model to be printed includes: Obtain the model data of the 3D model; Based on the model data of the 3D model, determine the printing mode of the 3D model to be printed.

3. The control method according to claim 1, characterized in that, The process of determining the printing mode of the 3D model to be printed includes: The system receives the printing mode of the 3D model to be printed, determined by the user based on the model data of the 3D model, through the user interface.

4. The control method according to any one of claims 1-3, characterized in that, The model data includes at least one of the following: data format information, model structure information, and model color information.

5. The control method according to claim 1, characterized in that, In the printing mode, based on the printing data, controlling the 3D inkjet printing device to print the 3D model includes: When the print head is within the printing area of ​​the 3D model, control the print head to move at a preset speed at a constant speed; In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity.

6. The control method according to claim 5, characterized in that, In the printing mode, controlling the 3D inkjet printing device to print the 3D model based on the printing data further includes: After the print head moves out of the printing area of ​​the 3D model, the print head is controlled to decelerate until the speed is 0. In the first printing mode, the first radiation source is controlled to provide radiation of a third preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a third preset intensity and the second radiation source is controlled to provide radiation of a fourth preset intensity. The third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity.

7. The control method according to claim 5, characterized in that, In the printing mode, controlling the 3D inkjet printing device to print the 3D model based on the printing data further includes: After the print head moves out of the printing area of ​​the 3D model, the print head is controlled to decelerate until the speed is 0. In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity, and the deceleration of the first radiation source is less than the deceleration of the second radiation source.

8. The control method according to claim 1, characterized in that, In the printing mode, based on the printing data, controlling the 3D inkjet printing device to print the 3D model includes: In the first printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, the first radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a first preset intensity. In the second printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, the first radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a first preset intensity; in the second scanning direction, when the second radiation source is within the printing area of ​​the 3D model, the second radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a second preset intensity.

9. The control method according to any one of claims 5-7, characterized in that, In the printing mode, controlling the 3D inkjet printing device to print the 3D model based on the printing data further includes: When the print head decelerates to 0 and before the print head enters the printing area of ​​the 3D model, the print head is controlled to accelerate in the opposite direction to the preset speed and move at the preset speed at a constant speed. In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity.

10. A control device for a 3D inkjet printing equipment, characterized in that, include: The first determining module is used to determine the printing mode of the 3D model to be printed, and to execute the first printing mode or the second printing mode in the same molding process. The printing mode is one of the first printing mode and the second printing mode, and the radiation source control parameters of the first printing mode and the second printing mode are different; The second determining module is used to determine the printing data of the 3D model based on the model data of the 3D model; A control module is configured to control the 3D inkjet printing device to print the 3D model based on the printing data in the printing mode. The 3D inkjet printing equipment also includes a leveling component, and the first radiation source, the leveling component, the print head, and the second radiation source are arranged sequentially in the first scanning direction; The first printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the second radiation source does not provide radiation, and the leveling component performs leveling; when the print head moves in the second scanning direction, neither the first radiation source nor the second radiation source provides radiation, and the leveling component does not perform leveling. The second printing mode includes: when the print head moves in the first scanning direction, the first radiation source provides radiation and the leveling component performs leveling; when the print head moves in the second scanning direction, the second radiation source provides radiation and the leveling component does not perform leveling; wherein the first scanning direction and the second scanning direction are opposite to each other; The second printing mode further includes: when the print head moves in the first scanning direction, the radiation intensity provided by the first radiation source is greater than the radiation intensity provided by the second radiation source when the print head moves in the second scanning direction.

11. The control device according to claim 10, characterized in that, The first determining module is used for, Obtain the model data of the 3D model; Based on the model data of the 3D model, determine the printing mode of the 3D model to be printed.

12. The control device according to claim 10, characterized in that, The first determining module is used for, The system receives the printing mode of the 3D model to be printed, determined by the user based on the model data of the 3D model, through the user interface.

13. The control device according to any one of claims 10-12, characterized in that, The model data includes at least one of the following: data format information, model structure information, and model color information.

14. The control device according to claim 10, characterized in that, The control module is used for, When the print head is within the printing area of ​​the 3D model, control the print head to move at a preset speed at a constant speed; In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity.

15. The control device according to claim 14, characterized in that, The control module is used for, After the print head moves out of the printing area of ​​the 3D model, the print head is controlled to decelerate until the speed is 0. In the first printing mode, the first radiation source is controlled to provide radiation of a third preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a third preset intensity and the second radiation source is controlled to provide radiation of a fourth preset intensity. The third preset intensity is less than the first preset intensity, and the fourth preset intensity is less than the second preset intensity.

16. The control device according to claim 14, characterized in that, The control module is used for, After the print head moves out of the printing area of ​​the 3D model, the print head is controlled to decelerate until the speed is 0. In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity, and the deceleration of the first radiation source is less than the deceleration of the second radiation source.

17. The control device according to claim 10, characterized in that, The control module is used for, In the first printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, the first radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a first preset intensity. In the second printing mode, in the first scanning direction, when the first radiation source is within the printing area of ​​the 3D model, the first radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a first preset intensity; in the second scanning direction, when the second radiation source is within the printing area of ​​the 3D model, the second radiation source is controlled to pass through the printing area at a constant speed and provide radiation of a second preset intensity.

18. The control device according to any one of claims 14-16, characterized in that, The control module is used for, When the print head decelerates to 0 and before the print head enters the printing area of ​​the 3D model, the print head is controlled to accelerate in the opposite direction to the preset speed and move at the preset speed at a constant speed. In the first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in the second printing mode, the first radiation source is controlled to provide radiation of a first preset intensity and the second radiation source is controlled to provide radiation of a second preset intensity.

19. An electronic device, characterized in that, include: A processor and a memory connected in communication; wherein the memory stores a computer program, and when the processor executes the computer program, the processor performs the method as described in any one of claims 1-9.

20. A storage medium, characterized in that, The system stores computer instructions that, when executed by a computer, cause the computer to perform the method as described in any one of claims 1-9.

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