Laser 3D printing silica gel system and method

Abstract

The invention provides a laser 3D silica gel printing system and a laser 3D silica gel printing method. The laser 3D silica gel printing system comprises a laser printing module, a silica gel supply module, a leveling module and a data processing module. The silica gel supply module is used for storing and providing a silica gel material; and the flattening module is used for acquiring flattening information of the corresponding hierarchical printing position and flattening the unprinted silica gel material at the hierarchical printing position according to the flattening information. And the data processing module is used for acquiring data information of the to-be-printed object and generating printing data capable of being printed at the hierarchical printing position according to the data information. The laser printing module serves as a heat source, laser 3D printing is conducted on the silica gel material according to the printing data, so that the silica gel material is heated and cured to form part of target objects and move downwards, and then the silica gel material located at the hierarchical printing position is heated and cured; and by parity of reasoning, the silica gel material which is in a flat state and located at the hierarchical printing position is printed layer by layer to form a target object.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and in particular to a laser 3D printing silicone system. The present application also relates to a laser 3D printing silicone method. Background Art

[0002] At present, the mainstream 3D printing technologies for silicone products are material extrusion molding technology and photopolymerization curing technology. Extrusion molding technology is limited by the curing speed of silicone, resulting in low printing efficiency. Photopolymerization curing technology adds photosensitive polymers to silicone, which trigger cross-linking reactions and promote silicone curing through ultraviolet or infrared irradiation. In addition, the photosensitive polymers in photopolymerization curing technology and a series of subsequent reactions limit product applications and pose safety risks.

[0003] Therefore, how to promote silicone curing and improve printing efficiency while ensuring material safety has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0004] The embodiment of the present application provides a laser 3D printing silicone system to solve the problem in the prior art of how to promote silicone curing and improve printing efficiency while ensuring material safety.

[0005] The embodiment of the present application provides a laser 3D printing silicone system, including: a laser printing module, a silicone supply module, a flattening module and a data processing module; wherein,

[0006] The silicone supply module is used to store and provide correspondingly measured silicone materials; the silicone supply module is provided with a layer printing position for printing the silicone material layer by layer;

[0007] The flattening module is used to obtain flattening information relative to the level printing position, and flatten the unprinted silicone material at the level printing position according to the flattening information, so that the unprinted silicone material at the level printing position is in a flat state;

[0008] The data processing module is used to obtain data information of the object to be printed, and generate printing data that can be printed at the hierarchical printing position according to the data information, and send the printing data to the laser printing module;

[0009] The laser printing module serves as a heat source, is used to receive the printing data, and according to the printing data, performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom, so that the silicone material at the hierarchical printing position is heated and cured to form a partial target object; the partial target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form the target object.

[0010] Optionally, the data processing module is used to obtain data information of the object to be printed, and generate printing data that can be printed at the hierarchical printing position according to the data information, including:

[0011] Analyzing and modeling the data information of the object to be printed to obtain 3D morphological data of the object to be printed;

[0012] Acquire slice information of several layers of 3D morphological data of the object to be printed;

[0013] Printing data that can be printed at the printing position of the layer level is generated according to the slice information of the layers.

[0014] Optionally, the acquiring of slice information of several layers of 3D morphological data of the object to be printed includes:

[0015] Determine a segmentation direction of the 3D shape data of the object to be printed; the segmentation direction is a direction from top to bottom of the object to be printed;

[0016] In the cutting direction, the 3D shape data of the object to be printed is cut into a plurality of slices according to the thickness information of the hierarchical printing position; the thickness of each slice is equal to the thickness of the hierarchical printing position;

[0017] Acquire the contour morphology information of the slice of each layer and the spatial coordinate information of the contour morphology of the slice in the spatial coordinate system;

[0018] The contour morphology information of the slices of each layer and the spatial coordinate information of the contour morphology of the slices in the spatial coordinate system are used as the slice information of several layers of the 3D morphology data of the object to be printed.

[0019] Optionally, generating printing data that can be printed at the level printing position according to the slice information of the plurality of layers includes:

[0020] Encoding the slices of each layer to form coded slices having coded information;

[0021] Constructing printing slices that can be printed in sequence in a superimposed manner according to the coding information of the coding slices;

[0022] Determine the printing gap information between adjacent printing slices according to the thickness information of the layer printing position and the time information of the silicone material leveled at the layer printing position, wherein the printing gap information refers to the information of stopping printing between adjacent printing slices;

[0023] Print data that can be printed at the hierarchical printing position is generated according to the print slices and the print gap information.

[0024] Optionally, the laser printing module performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom according to the printing data, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object, the part of the target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form the target object, including:

[0025] Determine a base point printing position of a silicone material of a current printing level in a flat state located at the level printing position;

[0026] Determining a downward movement distance of a portion of a target object at each printing level according to thickness information of the printing position of the level;

[0027] According to the base point printing position and the printing data, a laser beam is irradiated from top to bottom to perform laser 3D printing on the silicone material of the current printing level in the level printing position in a flat state, so that the silicone material of the current printing level at the level printing position is heated and cured to form a target object of the current printing level;

[0028] Part of the target object of the current printing level is moved downward according to the downward distance, and then the silicone material of the next printing level in a flat state located at the level printing position is heated and cured to form the target object of the next printing level; and so on, the silicone material in a flat state located at the level printing position is printed layer by layer to form the target object.

[0029] Optionally, the leveling module is used to obtain leveling information relative to the layer printing position, and level the unprinted silicone material at the layer printing position according to the leveling information, including:

[0030] Determining volume information of the level printing position;

[0031] Acquire rate information of the silicone material provided by the silicone supply module for the layer printing position;

[0032] Determining time information for providing silicone material to the layer printing position according to the volume information and rate information of the layer printing position;

[0033] Determining printing gap information between printing adjacent layers of silicone material at the layer printing position;

[0034] Determine the leveling information according to the time information and the printing gap information;

[0035] The unprinted silicone material is leveled at the layer printing position according to the leveling information.

[0036] Optionally, the step of leveling the unprinted silicone material at the layer printing position according to the leveling information further includes:

[0037] Acquire surface flatness information of the silicone material that is not printed at the printing position of the layer level;

[0038] The surface flatness information is fed back to the silicone supply module, and the silicone supply module is provided with silicone material of corresponding measurement according to the surface flatness information for re-flattening.

[0039] Optionally, the leveling module comprises at least a processing device, a driving device, a driving arm and a scraper; wherein,

[0040] The processing device is used to obtain the leveling information relative to the level printing position and control the driving device according to the leveling information;

[0041] The driving arm is connected to the driving device so as to swing to a position relative to the layer printing position under the driving of the driving device;

[0042] The scraper is connected to the driving arm so as to level the unprinted silicone material at the layer printing position under the drive of the driving arm.

[0043] Optionally, the data processing module is further used to obtain the material temperature information, and generate corresponding printing data according to the material temperature information; the generating corresponding printing data according to the material temperature information includes:

[0044] Acquire current material temperature information of the silicone material printed at the layer printing position and next material temperature information of the silicone material not printed at the layer printing position;

[0045] Acquire printing power information and preheating temperature information for a print head of the laser printing module according to the current material temperature information and the next material temperature information;

[0046] Corresponding printing data is generated according to the printing power information and preheating temperature information of the print head.

[0047] The embodiment of the present application also provides a laser 3D printing silicone method, which is applied to the laser 3D printing silicone system described above, wherein the laser printing module in the laser 3D printing silicone system serves as a heat source, and comprises:

[0048] A corresponding amount of silicone material is provided at a layer printing position of a silicone pool in a silicone supply module; the silicone supply module is provided with a layer printing position for printing the silicone material layer by layer;

[0049] Acquire leveling information relative to the level printing position, and control a leveling module to level the unprinted silicone material at the level printing position according to the leveling information, so that the unprinted silicone material at the level printing position is in a level state;

[0050] Acquiring data information of an object to be printed, and generating printing data that can be printed at the hierarchical printing position according to the data information;

[0051] According to the printing data, a laser beam is irradiated from top to bottom to perform laser 3D printing on the silicone material in a flat state located at the hierarchical printing position, so that the silicone material at the hierarchical printing position is heated and cured to form a partial target object; the partial target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form a target object.

[0052] Compared with the prior art, the embodiments of the present application have the following advantages:

[0053] The embodiment of the present application provides a laser 3D printing silicone system, comprising: a laser printing module, a silicone supply module, a flattening module and a data processing module; wherein the silicone supply module is used to store and provide silicone materials of corresponding measurements; the silicone supply module is provided with a hierarchical printing position for printing the silicone material layer by layer; the flattening module is used to obtain flattening information relative to the hierarchical printing position, and flatten the unprinted silicone material at the hierarchical printing position according to the flattening information, so that the unprinted silicone material at the hierarchical printing position is in a flat state; the data processing module is used to obtain data information of the object to be printed, and generate a printable data processing module according to the data information. Printing data is printed at the hierarchical printing position, and the printing data is sent to the laser printing module; the laser printing module serves as a heat source, is used to receive the printing data, and according to the printing data, performs laser 3D printing on the silicone material in a flat state at the hierarchical printing position by irradiating the laser beam from top to bottom, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object; the part of the target object is moved downward, and the silicone material in a flat state at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state at the hierarchical printing position is printed layer by layer to form the target object.

[0054] The embodiment of the present application provides corresponding metered silicone materials through the silicone supply module, so that the silicone materials can meet the printing requirements while avoiding silicone waste. The flattening module can flatten the unprinted silicone material at the hierarchical printing position according to the flattening information, so that the unprinted silicone material at the hierarchical printing position is in a flat state, so as to improve the printing accuracy of the silicone material at the hierarchical printing position printed by the laser printing module. The data processing module generates corresponding printing data according to the data information of the object to be printed, and sends the printing data to the laser printing module. The laser printing module acts as a heat source and uses the printing data to perform laser 3D printing on the silicone material in a flat state at the hierarchical printing position in a top-down irradiation manner, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object, and the part of the target object is moved downward, and then the silicone material in a flat state at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state at the hierarchical printing position is printed layer by layer to form the target object. The laser source of the laser printing module improves curing, and dynamically optimizes and adjusts the light source and material extrusion volume. When a layer of silicone material is printed at the layer printing position, a layer of formed silicone material is moved down, and then combined with the flattening module, the newly distributed silicone material is flattened for laser printing again, thereby improving accuracy and efficiency. Laser, as an energy source, promotes silicone curing without destroying the safety of silicone. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic framework diagram of a laser 3D printing silicone system provided in an embodiment of the present application.

[0056] Figure 2 It is a flowchart of a method for generating printing data provided in an embodiment of the present application.

[0057] Figure 3 It is a schematic flow chart of a laser 3D printing silicone method provided in an embodiment of the present application.

[0058] Reference numerals:

[0059] Laser printing module 10 , silicone supply module 20 , data processing module 30 , and flattening module 40 . DETAILED DESCRIPTION

[0060] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0061] At present, the mainstream 3D printing technologies for silicone products are material extrusion molding technology and photopolymerization curing technology. Extrusion molding technology is limited by the curing speed of silicone, resulting in low printing efficiency. Photopolymerization curing technology adds photosensitive polymers to silicone, which trigger cross-linking reactions and promote silicone curing through ultraviolet or infrared irradiation. In addition, the photosensitive polymers in photopolymerization curing technology and a series of subsequent reactions limit product applications and pose safety risks.

[0062] Therefore, the embodiment of the present application provides a laser 3D printing silicone system to solve the problem in the prior art of how to promote silicone curing and improve printing efficiency while ensuring material safety. The present application also relates to a laser 3D printing silicone method.

[0063] The present application is described in detail below through specific embodiments and drawings.

[0064] The present application embodiment provides a laser 3D printing silicone system, as follows Figure 1 The laser 3D printing silicone system is described in detail. Figure 1 It is a schematic framework diagram of a laser 3D printing silicone system provided in an embodiment of the present application.

[0065] In this embodiment, the laser 3D printing silicone system includes a laser printing module 10, a silicone supply module 20, a flattening module 40 and a data processing module 30; wherein the silicone supply module 20 is used to store and provide corresponding metered silicone materials. Specifically, in one example, the silicone supply module 20 includes a silicone replenishing device and a silicone metering device, and the consumption of silicone is monitored in real time by the silicone metering device, so that the corresponding metered silicone is replenished in real time according to the corresponding consumption. The silicone supply module 20 is provided with a hierarchical printing position for printing the silicone material layer by layer. The flattening module 40 is used to obtain the flattening information relative to the hierarchical printing position, and flatten the unprinted silicone material at the hierarchical printing position according to the flattening information, so that the unprinted silicone material at the hierarchical printing position is in a flat state. The data processing module 30 is used to obtain the data information of the object to be printed, and generate the printing data that can be printed at the hierarchical printing position according to the data information, and send the printing data to the laser printing module 10. The laser printing module 10 serves as a heat source, is used to receive printing data, and according to the printing data, performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object; the part of the target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form the target object.

[0066] In this embodiment, it should be supplemented that the silica gel material is a silica gel material containing fluoride, and the silica gel material further contains component A and component B. Of course, in other examples, the silica gel material may only contain silica gel components.

[0067] Specifically, in the present embodiment, the silicone supply module 20 includes a silicone containing tank, a silicone storage device, a lifting base and a control device, and the control device includes a microprocessor. The silicone containing tank is used to contain silicone. The silicone storage device is used to store silicone and provide silicone to the silicone containing tank. The silicone containing tank and the silicone storage device are connected through a conveying pipeline. The microprocessor is connected to the data processing module 30 for communication, and is used to obtain the printing data of the data processing module 30, and control the silicone storage device to convey the corresponding metered silicone according to the printing data. A flow meter is provided in the silicone storage device for controlling the flow of silicone. Thereby, waste of silicone material can be avoided. The lifting base is arranged in the silicone containing tank, and is used to carry part of the silicone material, and can drive the printed silicone material (i.e., part of the target object) to move downward.

[0068] In one example, the silicone supply module 20 is provided with a hierarchical printing position for printing the silicone material layer by layer. Specifically, the hierarchical printing position may be located at the position where the lifting base is located. The base surface of the lifting base is the base surface of the hierarchical printing position, and the base surface of the lifting base can bear part of the silicone material and can drive the printed silicone material (i.e., part of the target object) to move downward. After the first layer of printed silicone material moves downward, the original hierarchical printing position can continue to accommodate the silicone material, and the thickness of the accommodated silicone material is equal to the distance the lifting base moves downward.

[0069] In one example, the hierarchical printing position may be located above the silicone containing tank, and the silicone material may be injected into the silicone containing tank through the injection port of the silicone containing tank. As the silicone material is injected, the silicone material may reach the hierarchical printing position of the silicone containing tank. The silicone material may be laser 3D printed at the hierarchical printing position. For the unprinted silicone material, it may be released through the output port of the silicone containing tank. For the printed silicone located at the hierarchical printing position, it may move downward to the inner cavity below the silicone containing tank, and the downward moving distance is the thickness dimension of the hierarchical printing position. At the same time, the silicone material is injected into the vacant hierarchical printing position through the injection port of the silicone containing tank.

[0070] In this embodiment, the silicone material injected into the vacant hierarchical printing position through the injection port of the silicone containing pool may be unevenly distributed, which in turn affects the printing effect of the laser printing module 10 on the silicone material. In this regard, the present embodiment is provided with a leveling module 40, wherein the leveling module 40 is used to obtain leveling information relative to the hierarchical printing position, and level the unprinted silicone material at the hierarchical printing position according to the leveling information, so that the unprinted silicone material at the hierarchical printing position is in a flat state. Specifically, first, the volume information of the hierarchical printing position is determined, that is, how much volume of silicone material can be accommodated at the hierarchical printing position. Then, the rate information of the silicone supply module 20 providing the silicone material to the hierarchical printing position is obtained, and the time information of providing the silicone material to the hierarchical printing position is determined according to the volume information and rate information of the hierarchical printing position. That is, the time required to fill the hierarchical printing position with silicone material is determined. Then, the printing gap information between the silicone materials of adjacent layers is determined when printing at the hierarchical printing position, wherein printing the silicone materials of adjacent layers at the hierarchical printing position refers to printing the silicone materials of the current layer and printing the silicone materials of the next layer at the hierarchical printing position, so that the printing time of the printed silicone materials corresponding to the two layers can be obtained, and then the printing gap information can be obtained according to the printing time difference of the printed silicone materials corresponding to the two layers, and the printing gap information refers to the gap time difference between adjacent printed silicone materials. Finally, the leveling information is determined according to the time information and the printing gap information. The leveling information determined here mainly refers to the time information required for leveling the silicone material, that is, how long it takes to complete the leveling of the silicone material located at the hierarchical printing position. Then, the unprinted silicone material is leveled at the hierarchical printing position according to the leveling information.

[0071] Of course, in this embodiment, the leveling module 40 can also level the silicone material initially injected into the vacant layer printing position.

[0072] In this embodiment, considering the fluidity of the silicone material, when it is injected into the hierarchical printing position, the end surface relative to the hierarchical printing position may be uneven. In this regard, the unprinted silicone material is flattened at the hierarchical printing position according to the flattening information, and further includes: obtaining the surface flatness information of the silicone material that is not printed at the hierarchical printing position, and feeding the surface flatness information back to the silicone supply module 20, and providing the silicone supply module 20 with a corresponding amount of silicone material according to the surface flatness information for re-flattening. Among them, the surface flatness information includes surface concave information and surface convex information. Specifically, the surface concave information and surface convex information of the silicone material that is not printed at the hierarchical printing position are obtained, and the first position information corresponding to the surface concave state and the second position information corresponding to the surface convex state of the silicone material that is not printed at the hierarchical printing position are obtained. Then, based on the presence of depression or protrusion on the surface of the silicone material not printed at the layer printing position, the silicone supply module 20 can be controlled to provide a corresponding amount of silicone material according to the surface depression information and surface protrusion information, and then the newly provided corresponding amount of silicone material can be flattened again.

[0073] In this embodiment, the leveling module 40 at least includes a processing device, a driving device, a driving arm and a scraper; wherein the processing device is used to obtain the leveling information relative to the hierarchical printing position, and control the driving device according to the leveling information. The driving arm is connected to the driving device so as to swing to a position relative to the hierarchical printing position under the drive of the driving device. The scraper is connected to the driving arm so as to level the unprinted silicone material at the hierarchical printing position under the drive of the driving arm. In one example, the leveling module 40 also includes an image acquisition device, which is used to obtain the surface flatness information of the silicone material that is not printed at the hierarchical printing position, and feed the surface flatness information back to the silicone supply module 20.

[0074] After leveling the silicone material that has not been printed at the hierarchical printing position, the leveled silicone material can be printed. Before printing, it is necessary to obtain data information of the object to be printed through the data processing module 30, and generate printing data that can be printed at the hierarchical printing position based on the data information, and send the printing data to the laser printing module 10 for printing.

[0075] Among them, Figure 2 As shown, Figure 2 The data processing module 30 is used to obtain data information of the object to be printed, and generate print data that can be printed at the hierarchical printing position according to the data information, including the following steps:

[0076] Step S201: Analyze and model the data information of the object to be printed to obtain 3D shape data of the object to be printed.

[0077] In this step, the object to be printed includes a silicone object to be printed, that is, the object is made of silicone material. Each object to be printed has its own morphological structure. In this regard, the data information of the object to be printed can be analyzed to obtain morphological feature data corresponding to the object to be printed. Morphological feature data refers to the shape structure of the object to be printed and the corresponding coordinate position of each shape structure in three-dimensional space. The morphological feature data can fully reflect the three-dimensional morphological structure of the object to be printed. Specifically, in one example, the data information of the object to be printed includes image data of the object to be printed, and the image data of the object to be printed can be subjected to image recognition analysis to obtain morphological feature data corresponding to the object to be printed. In another example, the object to be printed can be directly physically scanned to obtain scan data, and the scan data has a one-to-one correspondence with the physical data of the object to be printed, and then the obtained scan data can be converted into morphological feature data of the object to be printed.

[0078] Then, the morphological feature data is processed by data model to obtain standard model data associated with the object to be printed. In this step, the data model processing of the morphological feature data mainly adopts a linear normalization processing method so that the morphological feature data can reach the standard model data that can be processed by the preset model.

[0079] Finally, a preset model is obtained, and the standard model data is input into the preset model to obtain 3D morphological data for the object to be printed. Specifically, in this step, the preset model is obtained by pre-training, that is, the standard model data of the above-mentioned morphological feature data is obtained, and the standard model data is used as a sample for training, which can be called a standard model data sample. An initial model is constructed, the parameters of the initial model are set, and the standard model data sample is input into the initial model. The initial model is iteratively trained with a large number of standard model data samples, and the output result of the initial model is compared with the preset standard 3D morphological data. If the comparison result is consistent, the initial model is determined as the preset model; if the comparison result is inconsistent, the standard model data sample is continuously input into the initial model for iterative training until the output result is consistent with the preset standard 3D morphological data. Then, after obtaining the preset model, the standard model data is input into the preset model to obtain the 3D morphological data for the object to be printed.

[0080] Step S202: Acquire slice information of several layers of 3D morphological data of the object to be printed.

[0081] After obtaining the 3D morphological data for the object to be printed, obtain the slice information of several layers of the 3D morphological data for the object to be printed. Specifically, first, determine the segmentation direction of the 3D morphological data of the object to be printed. Among them, the segmentation direction of the 3D morphological data of the object to be printed can be any direction of the 3D morphology of the object to be printed in the spatial coordinate system. The segmentation direction of this embodiment refers to the direction from top to bottom of the 3D morphology of the object to be printed in the spatial coordinate system. Then, in the segmentation direction, the 3D morphological data of the object to be printed is segmented into several layers of slices according to the thickness information of the hierarchical printing position. Specifically, the total length data of the 3D morphology of the object to be printed in the 3D morphological data of the object to be printed in the segmentation direction is obtained, and the 3D morphology of the object to be printed is divided into several layers of slices according to the total length data of the 3D morphology of the object to be printed and the thickness information of the hierarchical printing position, and the thickness of each layer of the slice is equal to the thickness of the hierarchical printing position. Then, the contour morphological information of the slice of each layer and the spatial coordinate information of the contour morphology of the slice in the spatial coordinate system are obtained. Based on the fact that the 3D morphology data of the object to be printed includes the 3D morphology of the object to be printed, after the 3D morphology of the object to be printed is divided into several layers of slices, each layer of the slices has corresponding contour morphology and spatial coordinate information. The contour morphology information of the slices of each layer and the spatial coordinate information of the contour morphology of the slices in the spatial coordinate system are used as the slice information of several layers of the 3D morphology data of the object to be printed.

[0082] In one example, the contour morphology information includes inner contour morphology information and outer contour morphology information.

[0083] Furthermore, in the spatial coordinate system, the slices of each layer not only have corresponding contour morphology and spatial coordinate information, but also the slices of each layer can be imaged, that is, the slices of each layer are identified to form a slice image, and each pixel point in the slice image has a corresponding spatial sub-coordinate, and each pixel point in the slice image has a corresponding spatial sub-coordinate that can constitute the spatial coordinate information of the slices of each layer.

[0084] Step S203: generating printing data that can be printed at the level printing position according to the slice information of the plurality of layers.

[0085] After obtaining the slice information of several layers, print data that can be printed at the hierarchical printing position is generated according to the slice information of several layers. Specifically, since there are many layers of slices, in order to clarify each layer, the slices of each layer are encoded to form coded slices with coding information. For example, the coded slice of the first layer is coded slice 1, the coded slice of the first layer is coded slice 2, the coded slice of the first layer is coded slice 3... and so on. Then, according to the coding information of the coded slices, print slices that can be superimposed and printed in sequence are constructed, and print slices refer to slices that can be used for printing. In this embodiment, the object to be printed is generally a three-dimensional object, such as an orthodontic appliance. When printing the three-dimensional object to be printed, the corresponding slices need to be printed in a specified printing order, and then when determining the print data, the coded slices with coding information are given the printing order of the slices, but it is necessary to further superimpose all the slices in sequence to form a completed three-dimensional object. Therefore, this step needs to construct print slices that can be superimposed and printed in sequence according to the coding information of the coded slices.

[0086] Then, the printing gap information between adjacent printing slices is determined according to the thickness information of the hierarchical printing position and the time information of leveling the silicone material at the hierarchical printing position, and the printing gap information refers to the information of stopping printing between adjacent printing slices. Among them, the printing is stopped because the silicone material newly injected into the hierarchical printing position needs to be leveled, and the leveling takes time, so the printing is stopped during this period. In addition, stopping printing may involve the situation of replacing the print head of the laser printing module 10, that is, replacing a laser with a different laser scale to print the next slice. Alternatively, stopping printing may involve the printing temperature being too high and requiring stopping printing to cool down, etc., in order to ensure the printing accuracy during the printing process. Alternatively, stopping printing requires adjusting the corresponding working power of the laser, etc. Finally, printing data that can be printed at the hierarchical printing position is generated based on the printing slices and the printing gap information.

[0087] After obtaining the printing data, the data processing module 30 sends the printing data to the laser printing module 10. In one example, the laser printing module 10 serves as a heat source. The laser printing module 10 includes at least one laser and at least one driving mechanism. The laser is connected to the driving mechanism so that the laser is driven to move to a designated position under the drive of the driving mechanism to print the silicone material. The laser printing module 10 receives the printing data and performs laser 3D printing on the silicone material in a flat state at the hierarchical printing position in a top-down irradiation manner according to the printing data, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object; the part of the target object is moved downward, and the silicone material in a flat state at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state at the hierarchical printing position is printed layer by layer to form the target object.

[0088] Specifically, first, determine the base point printing position of the silicone material of the current printing level in a flat state located at the level printing position. When printing the silicone material at the level printing position, it is necessary to determine the base point printing position of the silicone material at the level printing position, and the base point printing position is a reference point for printing the silicone material. Then, determine the downward movement distance of the partial target object of each printing level according to the thickness information of the level printing position, and the downward movement distance of the partial target object of each printing level is used to move the partial target object of each printing level downward. Then, according to the base point printing position and the printing data, perform laser 3D printing on the silicone material of the current printing level in a flat state located at the level printing position in a top-down irradiation manner, so that the silicone material of the current printing level located at the level printing position is heated and cured to form the current printing level target object. Then, part of the target object of the current printing level is moved downward according to the downward distance, the vacant level printing position is filled with silicone material again, and the unprinted silicone material is leveled at the level printing position according to the leveling information by the leveling module 40, and then, the silicone material of the next printing level in a leveled state located at the level printing position is heated and cured to form the target object of the next printing level; and so on, the silicone material in a leveled state located at the level printing position is printed layer by layer to form the target object.

[0089] In this embodiment, the data processing module 30 is also used to obtain the material temperature information and generate corresponding printing data according to the material temperature information; the generating corresponding printing data according to the material temperature information includes: obtaining the current material temperature information of the silicone material printed at the hierarchical printing position and the next material temperature information of the silicone material not printed at the hierarchical printing position, obtaining the printing power information and preheating temperature information of the print head of the laser printing module 10 according to the current material temperature information and the next material temperature information, and generating corresponding printing data according to the printing power information and preheating temperature information of the print head.

[0090] The embodiment of the present application provides a laser 3D printing silicone system, comprising: a laser printing module 10, a silicone supply module 20, a flattening module 40 and a data processing module 30; wherein the silicone supply module 20 is used to store and provide correspondingly measured silicone materials; the silicone supply module 20 is provided with a hierarchical printing position for printing the silicone material layer by layer; the flattening module 40 is used to obtain flattening information relative to the hierarchical printing position, and flatten the unprinted silicone material at the hierarchical printing position according to the flattening information, so that the unprinted silicone material at the hierarchical printing position is in a flat state; the data processing module 30 is used to obtain data information of the object to be printed, and flatten the unprinted silicone material at the hierarchical printing position according to the data The laser printing module 10 generates printing data that can be printed at the hierarchical printing position according to the information, and sends the printing data to the laser printing module 10; the laser printing module 10 serves as a heat source, is used to receive the printing data, and according to the printing data, performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object; the part of the target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form the target object.

[0091] In the embodiment of the present application, the silicone material of corresponding metering is provided by the silicone supply module 20, so that the silicone material can meet the printing requirements while avoiding silicone waste. The flattening module 40 can flatten the unprinted silicone material at the hierarchical printing position according to the flattening information, so that the unprinted silicone material at the hierarchical printing position is in a flat state, so as to improve the printing accuracy of the silicone material at the hierarchical printing position printed by the laser printing module 10. The data processing module 30 generates corresponding printing data according to the data information of the object to be printed, and sends the printing data to the laser printing module 10. The laser printing module 10 acts as a heat source and uses the printing data to perform laser 3D printing on the silicone material in a flat state at the hierarchical printing position in a top-down irradiation manner, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object, and the part of the target object is moved downward, and then the silicone material in a flat state at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state at the hierarchical printing position is printed layer by layer to form the target object. The laser source of the laser printing module 10 realizes the improvement of curing, and dynamically optimizes and adjusts the light source and the material supply. When a layer of silicone material is printed at the hierarchical printing position, a layer of formed silicone material is moved down, and then the newly distributed silicone material is leveled with the flattening module for laser printing again, thereby improving accuracy and efficiency. The laser is used as an energy source to promote the curing of silicone without destroying the safety of silicone.

[0092] An embodiment of the present application also provides a laser 3D printing silicone method, which is applied to the laser 3D printing silicone system described above, wherein the laser printing module in the laser 3D printing silicone system serves as a heat source. Figure 3 1 is a schematic flow chart of a laser 3D printing silicone method provided in an embodiment of the present application. The method comprises the following steps:

[0093] Step S301: providing a corresponding amount of silicone material at a layer printing position of a silicone pool in a silicone supply module, wherein the silicone supply module is provided with a layer printing position for printing the silicone material layer by layer.

[0094] Specifically, in the present embodiment, the silicone supply module includes a silicone containing tank, a silicone storage device, a lifting base and a control device, and the control device includes a microprocessor. The silicone containing tank is used to contain silicone. The silicone storage device is used to store silicone and provide silicone to the silicone containing tank. The silicone containing tank and the silicone storage device are connected through a conveying pipeline. The microprocessor is connected to the data processing module for communication, and is used to obtain the printing data of the data processing module, and control the silicone storage device to convey the corresponding metered silicone according to the printing data. A flow meter is provided in the silicone storage device for controlling the flow of silicone, thereby avoiding the waste of silicone material. The lifting base is arranged in the silicone containing tank, for carrying part of the silicone material, and can drive the printed silicone material (i.e., part of the target object) to move downward.

[0095] In one example, the silicone supply module is provided with a hierarchical printing position for printing the silicone material layer by layer. Specifically, the hierarchical printing position may be located at the position where the lifting base is located. The base surface of the lifting base is the base surface of the hierarchical printing position, and the base surface of the lifting base may bear part of the silicone material and may drive the printed silicone material (i.e., part of the target object) to move downward. After the first layer of printed silicone material moves downward, the original hierarchical printing position may continue to accommodate the silicone material, and the thickness of the accommodated silicone material is equal to the distance the lifting base moves downward.

[0096] In this embodiment, the silica gel material is a silica gel material containing fluoride, and the silica gel material further contains component A and component B. Of course, in other examples, the silica gel material may only contain silica gel components.

[0097] Step S302: acquiring leveling information relative to the level printing position, and controlling a leveling module to level the unprinted silicone material at the level printing position according to the leveling information, so that the unprinted silicone material at the level printing position is in a level state.

[0098] In this embodiment, the silicone material injected into the vacant hierarchical printing position through the injection port of the silicone containing pool may be unevenly distributed, which in turn affects the printing effect of the laser printing module on the silicone material. In this regard, this embodiment is provided with a leveling module, wherein the leveling module is used to obtain leveling information relative to the hierarchical printing position, and level the unprinted silicone material at the hierarchical printing position according to the leveling information, so that the unprinted silicone material at the hierarchical printing position is in a flat state. Specifically, first, the volume information of the hierarchical printing position is determined, that is, how much volume of silicone material can be accommodated at the hierarchical printing position. Then, the rate information of the silicone supply module providing the silicone material to the hierarchical printing position is obtained, and the time information for providing the silicone material to the hierarchical printing position is determined according to the volume information and rate information of the hierarchical printing position. That is, the time required to fill the hierarchical printing position with silicone material is determined. Then, the printing gap information between the silicone materials of adjacent layers is determined when printing at the hierarchical printing position, wherein printing the silicone materials of adjacent layers at the hierarchical printing position refers to printing the silicone materials of the current layer and printing the silicone materials of the next layer at the hierarchical printing position, so that the printing time of the printed silicone materials corresponding to the two layers can be obtained, and then the printing gap information can be obtained according to the printing time difference of the printed silicone materials corresponding to the two layers, and the printing gap information refers to the gap time difference between adjacent printed silicone materials. Finally, the leveling information is determined according to the time information and the printing gap information. The leveling information determined here mainly refers to the time information required for leveling the silicone material, that is, how long it takes to complete the leveling of the silicone material located at the hierarchical printing position. Then, the unprinted silicone material is leveled at the hierarchical printing position according to the leveling information.

[0099] Of course, in this embodiment, the leveling module can also level the silicone material initially injected into the vacant layer printing position.

[0100] Step S303: acquiring data information of the object to be printed, and generating printing data that can be printed at the hierarchical printing position according to the data information.

[0101] The specific content of this step can be found in the description of the above embodiment and will not be repeated here.

[0102] Step S304: performing laser 3D printing on the flat silicone material located at the hierarchical printing position according to the printing data by irradiating the laser beam from top to bottom, so that the silicone material located at the hierarchical printing position is heated and cured to form a partial target object; the partial target object is moved downward, and the flat silicone material located at the hierarchical printing position is heated and cured; and so on, the flat silicone material located at the hierarchical printing position is printed layer by layer to form the target object.

[0103] Although the present application is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0104] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0105] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0106] 1. Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include non-transitory media such as modulated data signals and carrier waves.

[0107] 2. Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] It should be noted that the embodiments of the present application may involve the use of user data. In actual applications, user-specific personal data can be used in the scheme described herein within the scope permitted by applicable laws and regulations, subject to the requirements of applicable laws and regulations of the country where the user is located (for example, with the user's explicit consent, effective notification to the user, etc.).

[0109] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

Claims

1. A laser 3D printing silicone system, characterized in that: include: Laser printing module, silicone supply module, flattening module and data processing module; among them, The silicone supply module is used to store and provide correspondingly measured silicone materials; the silicone supply module is provided with a layer printing position for printing the silicone material layer by layer; The flattening module is used to obtain flattening information relative to the level printing position, and flatten the unprinted silicone material at the level printing position according to the flattening information, so that the unprinted silicone material at the level printing position is in a flat state; The data processing module is used to obtain data information of the object to be printed, generate printing data that can be printed at the hierarchical printing position according to the data information, and send the printing data to the laser printing module; The laser printing module serves as a heat source, is used to receive the printing data, and according to the printing data, performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom, so that the silicone material at the hierarchical printing position is heated and cured to form a partial target object; the partial target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state located at the hierarchical printing position is printed layer by layer to form the target object.

2. The laser 3D printing silicone system according to claim 1, characterized in that: The data processing module is used to obtain data information of the object to be printed, and generate printing data that can be printed at the hierarchical printing position according to the data information, including: Analyzing and modeling the data information of the object to be printed to obtain 3D morphological data of the object to be printed; Acquire slice information of several layers of 3D morphological data of the object to be printed; Printing data that can be printed at the printing position of the layer level is generated according to the slice information of the layers.

3. The laser 3D printing silicone system according to claim 2, characterized in that: The obtaining of slice information of several layers of 3D morphological data of the object to be printed includes: Determine the segmentation direction of the 3D shape data of the object to be printed; In the cutting direction, the 3D shape data of the object to be printed is cut into a plurality of slices according to the thickness information of the hierarchical printing position; the thickness of each slice is equal to the thickness of the hierarchical printing position; Acquire the contour morphology information of the slice of each layer and the spatial coordinate information of the contour morphology of the slice in the spatial coordinate system; The contour morphology information of the slices of each layer and the spatial coordinate information of the contour morphology of the slices in the spatial coordinate system are used as the slice information of several layers of the 3D morphology data of the object to be printed.

4. The laser 3D printing silicone system according to claim 3, characterized in that: The step of generating printing data that can be printed at the level printing position according to the slice information of the plurality of layers includes: Encoding the slices of each layer to form coded slices having coded information; Constructing printing slices that can be printed in sequence in a superimposed manner according to the coding information of the coding slices; Determine the printing gap information between adjacent printing slices according to the thickness information of the layer printing position and the time information of the silicone material leveled at the layer printing position, wherein the printing gap information refers to the information of stopping printing between adjacent printing slices; Print data that can be printed at the hierarchical printing position is generated according to the print slices and the print gap information.

5. The laser 3D printing silicone system according to claim 1, characterized in that: The laser printing module performs laser 3D printing on the silicone material in a flat state located at the hierarchical printing position by irradiating the laser beam from top to bottom according to the printing data, so that the silicone material in the hierarchical printing position is heated and cured to form a partial target object, the partial target object is moved downward, and the silicone material in a flat state located at the hierarchical printing position is heated and cured again; By analogy, printing the silicone material in a flat state at the layer printing position layer by layer to form a target object includes: Determine a base point printing position of a silicone material of a current printing level in a flat state located at the level printing position; Determining a downward movement distance of a portion of a target object at each printing level according to thickness information of the printing position of the level; According to the base point printing position and the printing data, a laser beam is irradiated from top to bottom to perform laser 3D printing on the silicone material of the current printing level in the level printing position in a flat state, so that the silicone material of the current printing level at the level printing position is heated and cured to form a target object of the current printing level; Part of the target object of the current printing level is moved downward according to the downward distance, and then the silicone material of the next printing level in a flat state located at the level printing position is heated and cured to form the target object of the next printing level; and so on, the silicone material in a flat state located at the level printing position is printed layer by layer to form the target object.

6. The laser 3D printing silicone system according to claim 1, characterized in that: The leveling module is used to obtain leveling information relative to the layer printing position, and level the unprinted silicone material at the layer printing position according to the leveling information, including: Determining volume information of the level printing position; Acquire rate information of the silicone material provided by the silicone supply module for the layer printing position; Determining time information for providing silicone material to the layer printing position according to the volume information and rate information of the layer printing position; Determining printing gap information between printing adjacent layers of silicone material at the layer printing position; Determine the leveling information according to the time information and the printing gap information; The unprinted silicone material is leveled at the layer printing position according to the leveling information.

7. The laser 3D printing silicone system according to claim 6, characterized in that: The step of leveling the unprinted silicone material at the layer printing position according to the leveling information further includes: Acquire surface flatness information of the silicone material that is not printed at the printing position of the layer level; The surface flatness information is fed back to the silicone supply module, and the silicone supply module is provided with silicone material of corresponding measurement according to the surface flatness information for re-flattening.

8. The laser 3D printing silicone system according to claim 1, characterized in that: The leveling module at least includes a processing device, a driving device, a driving arm and a scraper; wherein, The processing device is used to obtain the leveling information relative to the level printing position and control the driving device according to the leveling information; The driving arm is connected to the driving device so as to swing to a position relative to the layer printing position under the driving of the driving device; The scraper is connected to the driving arm so as to level the unprinted silicone material at the layer printing position under the drive of the driving arm.

9. The laser 3D printing silicone system according to claim 1, characterized in that: The data processing module is also used to obtain the material temperature information and generate corresponding printing data according to the material temperature information; The generating corresponding printing data according to the material temperature information comprises: Acquire current material temperature information of the silicone material printed at the layer printing position and next material temperature information of the silicone material not printed at the layer printing position; Acquire printing power information and preheating temperature information for a print head of the laser printing module according to the current material temperature information and the next material temperature information; Corresponding printing data is generated according to the printing power information and preheating temperature information of the print head.

10. A method for laser 3D printing silicone, applied to the laser 3D printing silicone system according to any one of claims 1 to 9, wherein the laser printing module in the laser 3D printing silicone system is used as a heat source, characterized in that: include: Provide corresponding metered silicone material at the layer printing position of the silicone pool in the silicone supply module; The silicone supply module is provided with a layer printing position for printing the silicone material layer by layer; Acquire leveling information relative to the level printing position, and control a leveling module to level the unprinted silicone material at the level printing position according to the leveling information, so that the unprinted silicone material at the level printing position is in a level state; Acquiring data information of an object to be printed, and generating printing data that can be printed at the hierarchical printing position according to the data information; According to the printing data, a laser beam is irradiated from top to bottom to perform laser 3D printing on the silicone material in a flat state located at the hierarchical printing position, so that the silicone material at the hierarchical printing position is heated and cured to form a part of the target object; the part of the target object is moved downward, and then the silicone material in a flat state located at the hierarchical printing position is heated and cured; and so on, the silicone material in a flat state at the hierarchical printing position is printed layer by layer to form the target object.

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