WO2024093782A1

WO2024093782A1 - 3d ink-jet printing device, and control apparatus and control method therefor

Info

Publication number: WO2024093782A1
Application number: PCT/CN2023/126762
Authority: WO
Inventors: 吕如松; 毛庆霖; 蒋韦; 向东清; 吴俊谊
Original assignee: 珠海赛纳三维科技有限公司
Priority date: 2022-11-03
Filing date: 2023-10-26
Publication date: 2024-05-10
Also published as: CN115782181A

Abstract

Provided in the present application are a 3D ink-jet printing device, and a control apparatus and control method therefor. The 3D ink-jet printing device can be controlled to perform differential printing in different printing modes by using different radiation source control parameters. Therefore, a radiation source can be more flexibly controlled to provide radiation, thereby effectively preventing the insufficient curing of a printed object due to insufficient radiation in a printing process, or the excessive curing of the printed object due to excessive radiation in the printing process. Moreover, the problems of energy being wasted, the service life of a radiation source being shortened, and the precision of object formation being poor caused by insufficient energy or surplus energy in a formation area due to the radiation source remaining in a turned-on state during the printing process and/or control conditions of the radiation source for printing different objects being the same are avoided.

Description

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

This application claims the priority of the Chinese patent application filed with the China Patent Office on November 3, 2022, with application number 202211372722.0 and application name “3D inkjet printing equipment, control device and control method thereof”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the technical field of 3D inkjet printing equipment, and in particular to a 3D inkjet printing equipment, a control device and a control method thereof.

Background technique

3D inkjet printing equipment is a printing device that can print 3D models through additive manufacturing technology. Additive manufacturing technology can also be called 3D printing technology. In the process of printing 3D models, 3D inkjet printing equipment can form layers of 3D models layer by layer and stack them layer by layer to finally form a 3D model. It has the advantages of high molding efficiency, less material waste, effective manufacturing cost savings, and the ability to manufacture various complex and aesthetically pleasing 3D models.

The 3D inkjet printing equipment in the prior art includes a radiation source, a print head and a leveling component. During the printing process, the radiation source is always in an on state and/or the control conditions of the radiation source are the same when printing different objects, which leads to energy waste, reduced service life of the radiation source, insufficient energy in the molding area or excess energy causing poor object molding accuracy.

Summary of the invention

The present application provides a 3D inkjet printing device, a control device and a control method thereof, which are used to overcome the problems in the prior art of energy waste, reduced service life of the radiation source, insufficient energy in the molding area or excess energy causing poor object molding accuracy.

The first aspect of the present application provides a control method for a 3D inkjet printing device, the 3D inkjet printing device comprising: a control device, a print head, a first radiation source and a second radiation source, the first radiation source and the second radiation source being respectively located on both sides of the print head; the control device is used to execute a control method, the control method comprising: determining a printing mode of a 3D model to be printed; the printing mode being a first printing mode and a second printing mode In one of the embodiments, the radiation source control parameters of the first printing mode and the second printing mode are different; the printing data of the 3D model is determined according to the model 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. Therefore, the control method of the 3D inkjet printing device provided in the embodiment of the present application can control the 3D inkjet printing device to use different radiation source control parameters for differentiated printing in different printing modes. Thus, before the 3D inkjet printing device prints the 3D model, the best printing mode can be determined in advance, and then the radiation source can be more flexibly controlled to provide radiation, effectively preventing the incomplete curing of the printed object due to insufficient radiation or excessive curing of the printed object due to excessive radiation during the printing process. It also avoids the problem that the radiation source is always in the on state during the printing process and/or the control conditions of the radiation source for printing different objects are the same, thereby causing energy waste, reduced service life of the radiation source, insufficient energy in the molding area or excess energy causing poor molding accuracy of the object. In addition, the control logic of the control method provided in the embodiment of the present application is simple, which can effectively extend the service life of the radiation source under the premise of meeting the molding accuracy of the printed object, and can also reduce the use cost of the 3D inkjet printing device.

In an embodiment of the first aspect of the present application, the control device specifically obtains the model data of the 3D model; and determines the printing mode of the 3D model to be printed according to the model data of the 3D model. Therefore, in this embodiment, the control device can determine the printing mode according to the model data of the 3D model to be printed in a more automated and intelligent manner, and make the determined printing mode more suitable for the current 3D model.

In an embodiment of the first aspect of the present application, the control device specifically receives the printing mode of the 3D model to be printed determined by the user according to the model data of the 3D model through the operation interface. Therefore, in this embodiment, the control device can determine the radiation source control parameters according to the printing mode indicated by the received user, so that there is no need to perform calculations to determine the printing mode, which reduces the amount of calculations required by the control device, enhances the user's control over the 3D inkjet printing device, and improves the user's experience.

In an embodiment of the first aspect of the present application, the model data includes: at least one of: data format information, model structure information and model color information.

In an embodiment of the first aspect of the present application, the radiation source control parameter is used to control one of the first radiation source and the second radiation source to provide radiation in the first printing mode, or is used to control the first radiation source and the second radiation source to provide radiation in the second printing mode. Therefore, this embodiment can avoid the problem that the radiation source is always in the on state during the printing process and/or the control conditions of the radiation source are the same when printing different objects, thereby causing energy waste, reduced service life of the radiation source, insufficient energy in the molding area or excess energy causing poor molding accuracy of the object.

In an embodiment of the first aspect of the present application, the 3D inkjet printing device further includes a leveling component. The radiation source, the leveling component, the print head and the second radiation source are arranged in sequence 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 radiation source 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; wherein the first scanning direction and the second scanning direction are opposite directions to each other. Therefore, in this embodiment, the control device controls the second radiation source to provide radiation to the ejected molding material during the inkjet printing process in the second scanning direction in the second printing mode, which can further improve the positioning accuracy of the ink droplets, so as to further prevent the ink droplets from penetrating or diffusing from the target landing position to the adjacent position, so that the surface clarity of the formed three-dimensional object is higher and the surface details are more abundant.

In an embodiment of the first aspect of the present application, 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. Therefore, in this embodiment, during the inkjet printing process of the print head in the second scanning direction, the radiation provided by the second radiation source will not completely solidify the molding material sprayed by the print head, and when the inkjet printing process is performed in the first scanning direction, the leveling component can also level the molding material sprayed in the previous stroke while leveling the molding material sprayed in the current stroke, so as to further improve the surface accuracy of the material layer.

In an embodiment of the first aspect of the present application, in a printing mode, based on printing data, a 3D inkjet printing device is controlled to print a 3D model, including: when the print head is in the printing area of the 3D model, the print head is controlled to move at a constant speed at a preset speed; in a first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in a 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.

In an embodiment of the first aspect of the present application, in a printing mode, based on printing data, a 3D inkjet printing device is controlled to print a 3D model, and further includes: when the print head moves out of the printing area of the 3D model, the print head is controlled to decelerate and move to a speed of 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. Therefore, in this embodiment, within the printing area, the radiation intensity provided by the radiation source in the deceleration area is controlled to be less than the radiation intensity provided in the uniform speed area, so as to improve the consistency or substantially consistency of the radiation energy received by the molding material per unit area within the printing area, thereby improving the consistency of the material performance of the three-dimensional object.

In an embodiment of the first aspect of the present application, in a printing mode, based on printing data, controlling a 3D inkjet printing device to print a 3D model, further comprising: when the print head moves out of the printing area of the 3D model, controlling the print head to decelerate and move to a speed of 0; in the first printing mode, controlling the 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 a first preset intensity and controlling the 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 area 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 area is longer than the time for the second radiation source to provide radiation in the deceleration area, thereby facilitating the improvement of the uniform or substantially uniform radiation energy received by the molding material per unit area within the deceleration area, and the radiation energy received by the molding material per unit area within the deceleration area is higher than the radiation energy received by the molding material per unit area within the uniform speed area, 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.

In an embodiment of the first aspect of the present application, in a printing mode, based on printing data, a 3D inkjet printing device is controlled to print a 3D model, including: in a first printing mode, in a first scanning direction, when a first radiation source is within a printing area of the 3D model, the first radiation source is controlled to pass through the printing area at a uniform speed and provide radiation of a first preset intensity; in a second printing mode, in a 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 uniform speed and provide radiation of a first preset intensity; in a 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 uniform speed and provide radiation of a second preset intensity. Therefore, in this embodiment, within the range of the printing area, by controlling the first radiation source and the second radiation source to pass at a uniform speed, the radiation energy received by the molding material per unit area within the range of the printing area is ensured to be consistent or substantially consistent, thereby improving the consistency of the material performance of the three-dimensional object.

In an embodiment of the first aspect of the present application, in a printing mode, based on printing data, a 3D inkjet printing device is controlled to print a 3D model, and also 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 a preset speed; in a first printing mode, the first radiation source is controlled to provide radiation of a first preset intensity, or in a 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.

A second aspect of the present application provides a 3D inkjet printing device, comprising: a print head, 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 print head; The control device is used to execute the control method of the 3D inkjet printing device as described in any one of the first aspects of the present application.

According to a third aspect of the present application, there is provided a control device for a 3D inkjet printing device, comprising: a first determination module, used to determine a printing mode of a 3D model to be printed; the printing mode is one of a first printing mode and a second printing mode, and the radiation source control parameters of the first printing mode and the second printing mode are different; a second determination module, used to determine the printing data of the 3D model according to the model data of the 3D model; and a control module, used to control the 3D inkjet printing device to print the 3D model based on the printing data in the printing mode.

In an embodiment of the third aspect of the present application, the first determination module is used to obtain model data of the 3D model; and determine the printing mode of the 3D model to be printed according to the model data of the 3D model.

In an embodiment of the third aspect of the present application, the first determination module is used to receive, through an operation interface, a printing mode of a 3D model to be printed, determined by a user based on model data of the 3D model.

In an embodiment of the third aspect of the present application, the model data includes: at least one of: data format information, model structure information and model color information.

In an embodiment of the third aspect of the present application, the radiation source control parameter is used to control one of the first radiation source and the second radiation source to provide radiation in the first printing mode, or to control the first radiation source and the second radiation source to provide radiation in the second printing mode.

In an embodiment of the third aspect of the present application, the 3D inkjet printing device also includes a leveling component, and the first radiation source, the leveling component, the print head and the second radiation source are arranged in sequence in a 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 radiation source 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; wherein the first scanning direction and the second scanning direction are opposite directions to each other.

In an embodiment of the third aspect of the present application, the second printing mode also 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.

In one embodiment of the third aspect of the present application, the control module is used to control the print head to move at a preset speed when the print head is in 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.

In an embodiment of the third aspect of the present application, the control module is used to, when the print head is printed from the 3D model After moving out of the printing area, the print head is controlled to decelerate to a speed of 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.

In an embodiment of the third aspect of the present application, the control module 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, and the deceleration of the first radiation source is less than the deceleration of the second radiation source.

In an embodiment of the third aspect of the present application, the control module is used 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; in a 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.

In one embodiment of the third aspect of the present application, the control module is used to control the print head to accelerate in the opposite direction to a preset speed and move at a constant speed at a preset speed when the print head decelerates to 0 and before the print head enters 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.

The fourth aspect of the present application provides an electronic device, comprising: a processor and a memory connected in communication; wherein a computer program is stored in the memory, and when the processor executes the computer program, the processor executes any method as described in the first aspect of the present application.

The fifth aspect of the present application provides a storage medium storing computer instructions. When the computer instructions are executed by a computer, the computer executes any method of the first aspect of the present application.

In a sixth aspect, the present application provides a chip for executing instructions, the chip comprising a memory and a processor, the memory storing code and data, the memory being coupled to the processor, and the processor executing the code in the memory so that the chip is used to execute any method as in the first aspect of the present application.

A seventh aspect of the present application provides a computer program product comprising instructions, wherein the program product It includes a computer program, which is 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, the computer executes any method as described in the first aspect of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic structural diagram of an embodiment of a 3D inkjet printing device provided by the present application;

FIG2 is a flow chart of an embodiment of a control method for a 3D inkjet printing device provided by the present application;

FIG3 is a schematic diagram of a printing mode and radiation source control parameters provided by the present application;

FIG4 is a schematic diagram of an operation interface provided by the present application;

FIG5 is a schematic structural diagram of a 3D inkjet printing device provided in the present application;

FIG6 is a schematic diagram of a printing area of a 3D inkjet printing device provided in the present application;

FIG. 7 is another schematic diagram of the printing area of the 3D inkjet printing device provided by the present application;

FIG8 is a schematic diagram of a control device for a 3D inkjet printing device provided in the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in orders other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include steps or units that are not clearly listed. Other steps or elements expressly set forth or inherent to such processes, methods, products or apparatuses.

The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Figure 1 is a structural schematic diagram of an embodiment of a 3D inkjet printing device provided in the present application. The 3D inkjet printing device shown in Figure 1 includes: a control device 10, a first radiation source 21, a second radiation source 22, a print head 3, a leveling component 4, a carriage 5, a molding platform 8, a lifting mechanism 9 and a chamber wall 12.

As shown in FIG. 1 , the first radiation source 21 , the second radiation source 22 , the print head 3 , the leveling component 4 , the carriage 5 , the molding platform 8 and the lifting mechanism 9 are all arranged in the chamber wall 12 .

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

The carriage 5 can reciprocate on the X-beam of the printing device. The X-beam is arranged in the chamber wall 12 of the 3D inkjet printing device and is arranged along the X direction shown in FIG. 1 , which is not shown in FIG. 1 .

When the carriage 5 is reciprocating, the print head 3 can be used to spray the molding material 6 onto the molding platform 8 to form a layer 7n of the 3D model. The molding platform 8 is used to support the sprayed molding material 6 and the 3D model 7 formed after printing.

In one embodiment, the print head 3 may be a piezoelectric inkjet print head or a thermal bubble inkjet print head; it may be a single-channel print head, a dual-channel print head, or a print head combining a single-channel and a dual-channel. The embodiment of the present application does not limit the specific implementation of the print head 3, as long as it can normally implement inkjet printing.

In one embodiment, the molding material 6 may specifically include a model material and a 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 of the 3D model 7 to ensure the printing accuracy of the 3D model. In order to meet the printing requirements, the embodiment of the present application may also use the support material to print part of the object to be printed, and/or use the model material to print part of the support structure, which is not limited in the present application.

The first radiation source 21 and the second radiation source 22 are disposed on both sides of the print head 3. The first radiation source 21 and the second radiation source 22 can be used to provide radiation to the molding material 6 sprayed by the print head 3, respectively, so that the molding material 6 is cured to form a cured material layer 7n.

In one embodiment, the 3D inkjet printing device shown in FIG1 further includes a leveling component 4. The leveling component 4 can be used to level the molding material 6 ejected by the print head 3. Preferably, the length of the leveling component 4 in the direction of the nozzle array of the print head 3 is longer than the distance between the nozzles at both ends of the nozzle array of the print head 3; this helps the leveling component 4 to level the ejected material in the current stroke. It can also take into account the leveling of the material ejected in the previous stroke.

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

In one embodiment, the leveling component 4 may include a leveling rod, which can remove excess molding material 6 distributed on the molding platform 8 through the rotation of the leveling rod to improve the accuracy of the material layer 7n, thereby improving the molding accuracy of the 3D model 7.

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

In one embodiment, the molding platform 8 may be stationary in the Z direction, and the lifting mechanism may 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 molding platform 8 in the Z direction.

Alternatively, in the embodiment shown in FIG. 1 , the print head 3 is stationary in the Z direction, and the lifting mechanism 9 can be used to change the position of the molding platform 8 in the Z direction, thereby adjusting the distance between the print head 3 and the molding platform 8 in the Z direction.

The present application does not limit the driving method and driving structure of the elevator 9.

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

The embodiment of the present application also provides a control method for a 3D inkjet printing device, which can be executed by a control device 10 as shown in FIG. 1 .

FIG2 is a flow chart of an embodiment of a control method for a 3D inkjet printing device provided by the present application. The control method shown in FIG2 includes:

S101: The control device 10 determines a printing mode of a 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.

It is understandable that the first printing mode and the second printing mode are executed by the 3D inkjet printing device in different printing jobs. Different printing jobs correspond to different molding processes, and the first printing mode and the second printing mode are executed in different printing jobs, which specifically means that only one printing mode is executed in one printing job, such as the first printing mode or the second printing mode; that is, only the first printing mode or the second printing mode is executed in the same molding process; and at least one object to be printed is printed in one molding process or in one printing job.

In one embodiment, the radiation source control parameters corresponding to different printing modes are stored in a memory, so that the control device 10 can obtain the radiation source control parameters corresponding to different printing modes from the memory. The memory can be set inside the control device 10, or it can be a device outside the control device 10.

FIG3 is a schematic diagram of the printing mode and the radiation source control parameter provided by the present application. As shown in FIG3, the memory may store the correspondence between the first printing mode and the first radiation source control parameter, and store the correspondence between the second printing mode and the second radiation source control parameter. Then, when the control device 10 determines one of the first printing mode or the second printing mode, the first radiation source control parameter corresponding to the first printing mode may be determined through the correspondence shown in FIG3, or the second radiation source control parameter corresponding to the second printing mode may be determined.

It is understandable that the first radiation source control parameter is different from the second radiation source control parameter. Exemplarily, the control device 10 controls one of the first radiation source 21 and the second radiation source 22 to provide radiation in one printing operation according to the first radiation source control parameter; the control device 10 controls two radiation sources of the first radiation source 21 and the second radiation source 22 to provide radiation respectively in one printing operation according to the second radiation source control parameter.

In a specific implementation of S101, the control device 10 can obtain the model data of the 3D model to be printed, and determine whether the printing mode of the 3D model to be printed is the first printing mode or the second printing mode according to the model data of the 3D model. In one embodiment, the model data of the 3D model includes: at least one of the format information of the data, the structural information of the model, and the color information of the model. Therefore, in this embodiment, the control device 10 can determine the printing mode according to the model data of the 3D model to be printed in a more automated and intelligent manner, and make the determined printing mode more suitable for the current 3D model.

In another specific implementation of S101, the control device 10 can receive the printing mode of the 3D model determined by the user according to the model data of the 3D model through the operation interface. For example, Figure 4 is a schematic diagram of an operation interface provided by the present application. The operation interface shown in Figure 4 can be provided by the control device 10. For example, the control device 10 can be connected to a display device such as a display, and display the information corresponding to the two printing modes through the operation interface provided by the display. Subsequently, the control device 10 receives the printing mode determined by the user according to the model data of the 3D model through the operation interface provided by the display. Therefore, in this embodiment, the control device 10 can determine the radiation source control parameters according to the printing mode indicated by the received user, so that there is no need to perform calculations to determine the printing mode, which reduces the amount of calculations required by the control device 10, enhances the user's control over the 3D inkjet printing device, and improves the user's experience.

S102: The control device 10 determines the printing data of the 3D model according to the model data of the 3D model to be printed. The printing data includes the data of the control device 10 controlling the print head 3 to perform inkjet printing. The printing data may be, for example, controlled by the print head 3 to eject ink, to control the position of the print head 3 ejecting ink, and the type of inkjet material, such as color, etc. The specific composition and setting of the printing data are not limited in the present embodiment.

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 device to print the 3D model.

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

In summary, the control method of the 3D inkjet printing device provided in the embodiment of the present application can control the 3D inkjet printing device to perform differentiated printing using different radiation source control parameters in different printing modes. Thus, before the 3D inkjet printing device prints the 3D model, the best printing mode can be determined in advance, and then the radiation source can be more flexibly controlled to provide radiation, effectively preventing the incomplete curing of the printed object due to insufficient radiation or excessive curing of the printed object due to excessive radiation during the printing process. It also avoids the problem that the radiation source is always in the on state during the printing process and/or the control conditions of the radiation source for printing different objects are the same, thereby causing energy waste, reduced service life of the radiation source, insufficient energy in the molding area or excess energy causing poor object molding accuracy. In addition, the control logic of the control method provided in the embodiment of the present application is simple, which can effectively extend the service life of the radiation source under the premise of meeting the molding accuracy of the printed object, and can also reduce the use cost of the 3D inkjet printing device.

FIG5 is a schematic diagram of the structure of a 3D inkjet printing device provided by the present application. In the embodiment shown in FIG5 , the first scanning direction in the negative direction of X is the negative scanning direction, and the second scanning direction in the positive direction of X is the positive scanning direction. Then the first radiation source 21, the leveling component 4, the print head 3 and the second radiation source 22 of the 3D inkjet printing device are arranged in sequence in the first scanning direction. And the first radiation source 21, the leveling component 4, the print head 3 and the second radiation source 22 are all arranged 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 follow the carriage 5 to reciprocate between the positive scanning direction and the negative scanning direction. During the reciprocating movement, the print head 3 provides molding material, and one or two of the first radiation source 21 and the second radiation source 22 provide radiation.

In one embodiment, the control device 10 can be used to control the movement of the carriage 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.

For the 3D inkjet printing device shown in FIG5 , the control device 10 is in the first printing mode. When the print head 3 is controlled to perform inkjet printing according to the printing data, the first radiation source 21 is controlled to provide radiation, and the second radiation source 22 is controlled not 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 so that the material layer is cured to form a cured material layer, and controls 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 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 not to provide radiation.

For the 3D inkjet printing device shown in FIG5 , the control device 10 controls the first radiation source 21 and the second radiation source 22 to provide radiation when controlling the print head 3 to perform inkjet printing according to the printing data in the second printing mode. 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 so that the material layer is cured to form a cured material layer, and controls 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 the leveling work. Therefore, when the control device 10 is in the second printing mode and during the forward inkjet printing process, controlling the second radiation source 22 to provide radiation to the sprayed molding material 6 can further improve the positioning accuracy of the ink droplets, further prevent the ink droplets from penetrating or diffusing to adjacent positions at the target landing position, and make the surface of the formed three-dimensional object clearer and the surface details richer.

In one embodiment, when the control device 10 is 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. Therefore, during the inkjet printing process of the print head 3 in the positive scanning direction, the radiation provided by the second radiation source 22 will not completely solidify the molding material 6 sprayed by the print head 3, and during the inkjet printing process in the reverse scanning direction, the leveling component 4 can level the molding material 6 sprayed in the previous stroke while leveling the molding material 6 sprayed in the current stroke, so as to further improve the surface accuracy of the material layer 7n.

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, that is, the Y direction.

FIG6 is a schematic diagram of the printing area of the 3D inkjet printing device provided in this application. The circular area is the printing area. The moving path of the print head 3 during the material layer printing process is shown by the arrow in the figure. The X direction is the positive scanning direction, the X negative direction is the negative scanning direction, and one movement in one scanning direction is referred to as a pass. After the control device 10 controls the print head 3 to complete the printing of pass1 in the X direction, it controls the print head 3 to step a distance of one pass in the Y direction, and the control device 10 controls the print head 3 to perform the next stroke, i.e., the inkjet printing of pass2, in the -X direction, and repeats such movement until a layer of a three-dimensional object is formed. The Y direction is also called the stepping direction.

In the 3D inkjet printing device provided in the embodiment of the present application, the printing area for printing the 3D model specifically refers to the area where the print head 3 performs inkjet printing. When the print head 3 is in the printing area of the 3D model, the control device 10 controls the print head 3 to move at a preset uniform speed.

Referring to FIG6 , when the print head 3 is within the printing area of the 3D model, when the control device 10 is in the first printing mode, the control device 10 controls the carriage 5 to move in the positive scanning direction such as pass1 and pass3, and controls the print head 3, the first radiation source 21 and the second radiation source 22 to move at a preset speed in the printing area, and controls the first radiation source 21 and the second radiation source 22 not to provide radiation. When the control vehicle 5 moves in the negative scanning direction such as pass2 and pass4, 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 in the printing area, and controls the first radiation source 21 to provide radiation of the first preset intensity, and controls the second radiation source 22 not to provide radiation.

When the print head 3 is in the printing area of the 3D model, when the control device 10 is in the second printing mode, 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 in the printing area during the positive scanning direction such as pass1 and pass3, and controls the first radiation source 21 not to provide radiation and controls the second radiation source 22 to provide radiation of the second preset intensity. When 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 in the printing area during the negative scanning direction such as pass2 and pass4, 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 in the printing area, and controls the first radiation source 21 to provide radiation of the first preset intensity and controls the second radiation source 22 not to provide radiation.

In one embodiment, when the print head 3 completes a 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 a pass distance in the stepping direction to perform the next stroke of inkjet printing.

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 and in the first scanning direction, the print head 3 is exemplarily printed in pass 2, In the negative scanning direction such as pass4, the control device 10 controls the carriage 5 to move in the negative scanning direction such as pass2 and pass4, and the control device 10 controls the first radiation source 21 to move at a preset speed 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, exemplarily in the positive scanning direction such as pass1 and pass3, the control device 10 controls the carriage 5 to move in the positive scanning direction such as pass1 and pass3, and 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.

When the print head 3 completes one stroke of inkjet printing 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 positive scanning direction such as pass1 and pass3, and the control device 10 controls the second radiation source 22 to move at a preset speed in the printing area, and controls the first radiation source 21 not to provide radiation, and controls the second radiation source 22 to provide radiation of the second preset intensity. When the control device 10 controls the carriage 5 to move in the negative scanning direction such as pass2 and pass4, the control device 10 controls the first radiation source 21 to move at a preset speed in the printing area, and controls the first radiation source 21 to provide radiation of the first preset intensity, and controls the second radiation source 22 not to provide radiation.

In this embodiment, in the first printing mode or the 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 uniform speed, the control device 10 also controls the print head 3 to decelerate to 0, and then move a pass distance in the stepping direction to perform inkjet printing of the next stroke. In this embodiment, within the printing area, by controlling the first radiation source 21 and the second radiation source 22 to pass through the printing area at a uniform speed, it is ensured that 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 performance of the three-dimensional object.

FIG7 is another schematic diagram of the printing area of the 3D inkjet printing device provided by the present application. As shown in FIG7, in the positive scanning direction and the negative scanning direction, there is a certain spatial distance between the first radiation source 21, the second radiation source 22 and the print head 3, wherein 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. In the current stroke, the print head performs a deceleration motion after finishing inkjet printing, and the radiation source also performs a deceleration motion 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 the radiation intensity. Specifically, 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 to provide radiation of the third preset intensity in the first printing mode, or controls the first radiation source 21 to provide radiation of the third preset intensity and controls the second radiation source 22 to provide radiation of the fourth preset intensity in the second printing mode; wherein the third preset intensity is less than the first preset intensity, and the second preset intensity is less than the third preset intensity. The fourth preset intensity is less than the second preset intensity.

For example, in conjunction with FIG7 , when 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 first radiation source 21 to provide a third radiation intensity in the deceleration area (i.e., within the travel range of L2) that is less than the first radiation intensity in the uniform speed area. 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 first radiation source 21 to provide a third radiation intensity in the deceleration area (i.e., within the travel range of L2) that is less than the first radiation intensity in the uniform speed area; 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 second radiation source 22 to provide a fourth radiation intensity in the deceleration area (i.e., within the travel range of L1) that is less than the second radiation intensity in the uniform speed area. In this embodiment, within the printing area, by controlling the radiation intensity provided by the radiation source in the deceleration area to be less than the radiation intensity provided in the uniform speed area, the radiation energy received by the molding material per unit area within the printing area is ensured to be consistent or substantially consistent, thereby improving the consistency of the material properties of the three-dimensional object.

In one embodiment, 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 have different decelerations. 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 first preset intensity, or in the second printing mode, controls the first radiation source 21 to provide radiation of a first preset intensity and controls the second radiation source 22 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. 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 deceleration of the first radiation source 21 in the deceleration area, i.e., L2, to be smaller than the deceleration of the second radiation source 22 in the deceleration area, i.e., L1, in the positive scanning direction, so that the time for the first radiation source 21 to provide radiation in the deceleration area is longer than the time for the second radiation source 22 to provide radiation in the deceleration area, thereby facilitating the improvement of the consistency of the radiation energy received by the molding material per unit area within the deceleration area, and the radiation energy received by the molding material per unit area within the deceleration area is higher than the radiation energy received by the molding material per unit area within the uniform speed area, thereby improving the degree of curing 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.

In one embodiment, after the control device 10 controls the print head 3 to decelerate to 0 and move a pass in the stepping direction, the control device 10 controls the print head 3 to accelerate to a preset speed in the opposite direction before entering the printing area of the 3D model. In the first printing mode, when the print head 3 moves at a 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, controls the first radiation source 21 to provide radiation of a first preset intensity and controls the second radiation source 22 to provide radiation of a second preset intensity.

In one embodiment, the control device 10 can specifically perform data processing according to the model data of the 3D model, so as to obtain printing data corresponding to the model data. For example, the model data includes data format information, model structure information and/or model color information. The specific 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 and other formats that can be recognized by slicing software, among which STL format is a data format without color attributes, and 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 surface spliced by a series of triangular facets. Usually, when the shape of the model is simple, the number of triangular facets per unit area is small, and when the shape of the model is complex and there are many surface dendritic structures, protrusions, etc., the number of triangular facets per unit area is large.

In one embodiment, the first printing mode provided in the present application can be referred to as a normal printing mode, and the second printing mode can be referred to as a texture printing mode or a detail printing mode. Before printing a three-dimensional model, the user can select a suitable printing mode such as the first printing mode or the second printing mode according to the model data of the three-dimensional object. Specifically, when the data format of the model data of the three-dimensional object is a data format without color attributes such as the STL format, the first printing mode is selected; when the data format of the model data of the three-dimensional object is a data format with color attributes such as the PLY format, the OBJ format or the WRL format, the second printing mode is preferentially selected without being affected by the complexity of the structure of the three-dimensional object; when the three-dimensional object is a model with a single structure, that is, the number of triangular facets per unit area is less than a specified threshold and the data format is a data format without color attributes such as the STL format, the first printing mode is selected; when the three-dimensional object is a three-dimensional model with a complex structure, that is, the number of triangular facets per unit area is greater than the specified threshold, the second printing mode is selected. The specified threshold in the present application is an empirical value, or it can be a user's judgment on the complexity of the object to be printed based on personal perception, thereby determining whether to select the first printing mode or the second printing mode.

In one embodiment, the control device 10 can be used to slice and layer the acquired model data of the three-dimensional object through slicing software to obtain slice layer data, and obtain layer printing data by performing data processing on the slice layer data.

In one embodiment, the control device 10 determines the printing position in S101 through the model data of the 3D model. When 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; when 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.

In one embodiment, when the control device 10 determines the printing mode through the model data of the 3D model in S101, when the data format of the model data of the three-dimensional object is a data format without color attributes and the three-dimensional object is an object with a simple structure, the printing mode is determined to be the first printing mode; when the data format of the model data of the three-dimensional object is a data format without color attributes but the three-dimensional object is an object with a complex structure, the second printing mode is selected; when 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.

In the above embodiments, the control method and steps performed by the control device of the 3D inkjet printing device provided in the embodiments of the present application are introduced. In order to realize the functions in the control method provided in the embodiments of the present application, the control device as the execution subject may include a hardware structure and/or a software module, and realize the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

For example, FIG8 is a control device for a 3D inkjet printing device provided in the present application, which can be used to execute any control method for a 3D inkjet printing device provided in the present application. For example, the control device 100 includes: a first determination module 1001, a second determination module 1002, and a control module 1003. Among them, the first determination module 1001 is used to determine the printing mode of the 3D model to be printed; the second determination module 1002 is used to determine the printing data of the 3D model according to the model data of the 3D model; 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.

In one embodiment, the first determination module 1001 is used to obtain model data of a 3D model; and determine a printing mode of the 3D model to be printed according to the model data of the 3D model.

In one embodiment, the first determination module 1001 is used to receive, through an operation interface, a printing mode of a 3D model to be printed, which is determined by a user according to model data of the 3D model.

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

In one embodiment, the radiation source control parameter is used to control one of the first radiation source and the second radiation source to provide radiation in the first printing mode, or to control the first radiation source and the second radiation source to provide radiation in the second printing mode.

In one embodiment, the 3D inkjet printing device further includes a leveling component, a first radiation source, a leveling component The components, the print head and the second radiation source are arranged in sequence in a 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 radiation source 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; wherein the first scanning direction and the second scanning direction are opposite directions to each other.

In one embodiment, 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.

In one embodiment, the control module 1003 is used to control the print head to move at a preset speed when the print head is within 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.

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 the first printing mode, control the first radiation source to provide radiation of a third preset intensity, or in the 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.

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, and the deceleration of the first radiation source is less than the deceleration of the second radiation source.

In one embodiment, the control module 1003 is used 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; 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.

In one embodiment, the control module 1003 is used to, when the print head deceleration is zero and the print head is in Before entering 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.

The implementation method and principle of the control device of the 3D inkjet printing device provided in the embodiment of the present application can refer to the description of the control method of the 3D inkjet printing device mentioned above, and will not be repeated here.

It should be noted that it should be understood that the division of the various modules of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software called by processing elements, and some modules can be implemented in the form of hardware. It can be a separate processing element, or it can be integrated in a chip of the above device. In addition, it can also be stored in the memory of the above device in the form of program code, and called and executed by a processing element of the above device. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be 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 module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

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

In the above embodiments, the steps performed by the control device can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. 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. The computer instructions may be transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

The present application also provides an electronic device, including a processor and a memory. The processor and the memory are in communication connection. A computer program is stored in the memory. When the processor executes the computer program, the processor may execute the steps of any control method executed by the control device in the aforementioned embodiments of the present application.

The present application also provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, they can be used to execute the steps of the control method executed by the control device in any of the aforementioned embodiments of the present application.

An embodiment of the present application also provides a chip for executing instructions, wherein the chip is used to execute any step of the control method executed by the control device as described above in the present application.

An embodiment of the present application also provides a computer program product, which includes a computer program. The computer program is 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, the steps of the control method performed by any control device as described above in the present application can be implemented.

In one embodiment, the control device provided in the embodiment of the present application can be a pulse-width modulation (PWM) controller, a central processing unit (CPU), other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or any other programmable logic device, discrete gate and transistor logic device, etc.

Those skilled in the art can understand that all or part of the steps of the above embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above method embodiments are executed; and the aforementioned storage medium includes various media that can store program codes, such as ROM, magnetic disk or optical disk.

A person skilled in the art may understand that, in order to facilitate the explanation of the technical solution of the present application, the embodiments of the present application are described separately through functional modules, and the circuit devices in each module may partially or completely overlap, which shall not be construed as limiting the scope of protection of the present application.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A control method for a 3D inkjet printing device, the 3D inkjet printing device comprising: a control device, a print head, a first radiation source and a second radiation source, wherein the first radiation source and the second radiation source are respectively located on both sides of the print head; the control device is used to execute the control method, characterized in that the control method comprises:

Determining a printing mode of the 3D model to be printed; the printing mode is one of a first printing mode and a second printing mode, and the radiation source control parameters of the first printing mode and the second printing mode are different;

Determining printing data of the 3D model according to the model 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 control method according to claim 1, characterized in that the determining the printing mode of the 3D model to be printed comprises:

Acquiring model data of the 3D model;

A printing mode of the 3D model to be printed is determined according to the model data of the 3D model.
The control method according to claim 1, characterized in that the determining the printing mode of the 3D model to be printed comprises:

The printing mode of the 3D model to be printed is received by the user through the operation interface according to the model data of the 3D model.
The control method according to any one of claims 1 to 3, characterized in that:

The model data includes at least one of: data format information, model structure information and model color information.
The control method according to any one of claims 1 to 3 is characterized in that the radiation source control parameter is used to control one of the first radiation source and the second radiation source to provide radiation in the first printing mode, or is used to control the first radiation source and the second radiation source to provide radiation in the second printing mode.
The control method according to claim 5 is characterized in that:

The 3D inkjet printing device further includes a leveling component, wherein the first radiation source, the leveling component, the print head and the second radiation source are arranged in sequence in a first scanning direction;

The first printing mode includes: when the print head moves toward 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, the first radiation source and the second radiation source do not provide radiation;

The second printing mode includes: when the print head moves toward a first scanning direction, the first radiation source provides radiation; when the print head moves toward a second scanning direction, the second radiation source provides radiation; wherein the first scanning direction and the second scanning direction are opposite directions to each other.
The control method according to claim 6 is characterized in that:

The second printing mode further includes: when the print head moves in a 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 a second scanning direction.
The control method according to claim 6, characterized in that, in the printing mode, controlling the 3D inkjet printing device to print the 3D model based on the printing data comprises:

When the print head is within the printing area of the 3D model, controlling the print head to move at a constant speed at a 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.
The control method according to claim 8, characterized in that, in the printing mode, based on the printing data, controlling the 3D inkjet printing device to print the 3D model further comprises:

When the print head moves out of the printing area of the 3D model, controlling the print head to decelerate and move to a speed of 0;

In the first printing mode, controlling the 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 the third preset intensity and controlling the second radiation source to provide radiation of a fourth preset intensity;

The third preset intensity is smaller than the first preset intensity, and the fourth preset intensity is smaller than the second preset intensity.
The control method according to claim 8, characterized in that, in the printing mode, based on the printing data, controlling the 3D inkjet printing device to print the 3D model further comprises:

When the print head moves out of the printing area of the 3D model, controlling the print head to decelerate and move to a speed of 0;

In the first printing mode, controlling the first radiation source 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, the second radiation source is controlled to provide radiation of a second preset intensity, and the deceleration of the first radiation source is smaller than the deceleration of the second radiation source.
The control method according to claim 6, characterized in that, in the printing mode, controlling the 3D inkjet printing device to print the 3D model based on the printing data comprises:

In the first printing mode, in a 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 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 uniform 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 uniform speed and provide radiation of a second preset intensity.
The control method according to any one of claims 8 to 11, characterized in that, in the printing mode, based on the printing data, controlling the 3D inkjet printing device to print the 3D model further comprises:

When the print head decelerates to 0 and before the print head enters the printing area of the 3D model, controlling the print head to accelerate to the preset speed in the opposite direction 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.
A 3D inkjet printing device, comprising:

A print head, 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 two sides of the print head;

The control device is used to execute the control method as described in any one of claims 1-12.
A control device for a 3D inkjet printing device, characterized by comprising:

A first determining module is used to determine a printing mode of the 3D model to be printed; the printing mode is one of a first printing mode and a 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 3D model according to the model data of the 3D model. Print data;

A control module is used to control the 3D inkjet printing device to print the 3D model based on the printing data in the printing mode.
The control device according to claim 14, characterized in that the first determination module is used to:

Acquiring model data of the 3D model;

A printing mode of the 3D model to be printed is determined according to the model data of the 3D model.
The control device according to claim 14, characterized in that the first determination module is used to:

The printing mode of the 3D model to be printed is received by the user through the operation interface according to the model data of the 3D model.
The control device according to any one of claims 14 to 16, characterized in that:

The model data includes at least one of: data format information, model structure information and model color information.
The control device according to any one of claims 14 to 16, characterized in that:

The radiation source control parameter is used to control one of the first radiation source and the second radiation source to provide radiation in the first printing mode, or is used to control the first radiation source and the second radiation source to provide radiation in the second printing mode.
The control device according to claim 18, characterized in that

The 3D inkjet printing device further includes a leveling component, wherein the first radiation source, the leveling component, the print head and the second radiation source are arranged in sequence in a 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, both the first radiation source and the second radiation source do not provide radiation;

The second printing mode includes: when the print head moves toward a first scanning direction, the first radiation source provides radiation; when the print head moves toward a second scanning direction, the second radiation source provides radiation; wherein the first scanning direction and the second scanning direction are opposite directions to each other.
The control device according to claim 19, characterized in that

The second printing mode further includes: when the print head moves in a 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 a second scanning direction.
The control device according to claim 19, characterized in that the control module is used to:

When the print head is within the printing area of the 3D model, controlling the print head to move at a constant speed at a 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.
The control device according to claim 21, characterized in that the control module is used to:

When the print head moves out of the printing area of the 3D model, controlling the print head to decelerate and move to a speed of 0;

In the first printing mode, controlling the 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 the third preset intensity and controlling the second radiation source to provide radiation of a fourth preset intensity;

The third preset intensity is smaller than the first preset intensity, and the fourth preset intensity is smaller than the second preset intensity.
The control device according to claim 21, characterized in that the control module is used to:

When the print head moves out of the printing area of the 3D model, controlling the print head to decelerate and move to a speed of 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.
The control device according to claim 19, characterized in that the control module is used to:

In the first printing mode, in a 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 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 uniform 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 uniform speed and provide radiation of a second preset intensity.
The control device according to any one of claims 19 to 24, characterized in that the control The module is used to

When the print head decelerates to 0 and before the print head enters the printing area of the 3D model, controlling the print head to accelerate to the preset speed in the opposite direction 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.
An electronic device, characterized in that it comprises: a processor and a memory connected in communication; wherein a computer program is stored in the memory, and when the processor executes the computer program, the processor executes the method according to any one of claims 1 to 12.
A storage medium, characterized in that it stores computer instructions, and when the computer instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 12.
A chip for executing instructions, characterized in that the chip comprises a memory and a processor, the memory stores codes and data, the memory is coupled to the processor, and the processor executes the code in the memory so that the chip is used to execute the method described in any one of claims 1 to 12.
A computer program product containing instructions, characterized in that the program product includes a computer program, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and when the at least one processor executes the computer program, the computer executes any one of claims 1-12.