Three-dimensional printing apparatus and control method thereof

Abstract

The invention discloses three-dimensional printing equipment and a control method thereof, relates to the technical field of three-dimensional printing, and mainly aims to prevent alcohol from escaping so as to reduce potential safety hazards. According to the main technical scheme, the three-dimensional printing equipment comprises a shell, and an internal space is defined by the shell; the absorption assembly is arranged in the shell, the absorption assembly comprises an absorption body and a gas driving part, a first gas inlet of the gas driving part is communicated with the internal space, and a gas outlet of the gas driving part is communicated with the absorption body; the gas driving part is used for sucking gas in the internal space into the absorption body so that the absorption body can absorb the gas.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional printing, and in particular to a three-dimensional printing device and a control method thereof. Background Art

[0002] Photocuring 3D printing equipment generally applies light to a photosensitive material through a light source to solidify the liquid photosensitive material into a 3D solid model.

[0003] Currently, after curing, models generally require post-processing such as cleaning. The cleaning fluid used to clean the model is usually alcohol. During the cleaning process, a large amount of alcohol gas will remain inside the equipment, which can easily cause the alcohol to escape, posing a certain safety hazard. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a three-dimensional printing device and a control method thereof, the main purpose of which is to prevent alcohol from escaping, thereby reducing safety hazards.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] In one aspect, an embodiment of the present invention provides a three-dimensional printing device, comprising:

[0007] a housing defining an interior space;

[0008] An absorption component is arranged in the shell, and the absorption component includes an absorption body and a gas driving member. The first air inlet of the gas driving member is connected to the internal space, and the air outlet of the gas driving member is connected to the absorption body. The gas driving member is used to suck the gas in the internal space into the absorption body so that the absorption body absorbs the gas.

[0009] Optionally, the absorption body includes a container and a dissolution-aiding member, wherein the container is provided in the shell and contains a dissolving liquid, and the dissolution-aiding member is provided in the container and is at least partially immersed in the dissolving liquid;

[0010] The gas driving component is used to suck the gas into the container, and the dissolving aid component is used to help the gas dissolve in the dissolving liquid.

[0011] Optionally, the dissolution-aiding member is a porous structure, and the porous structure of the dissolution-aiding member is communicated with the gas outlet of the gas driving member; the dissolution-aiding member includes air stone or natural rock;

[0012] or,

[0013] The dissolution-aiding component is arranged at the bottom of the container;

[0014] or,

[0015] The absorbent body further includes a bubble-blocking member disposed in the container; in the direction of gravity, the bubble-blocking member is located above the dissolution-aiding member and is at least partially immersed in the dissolving liquid;

[0016] or,

[0017] The gas driving member is provided in the housing and is located outside the container; along the direction of gravity, the gas driving member is located above the container;

[0018] or,

[0019] The bottom of the shell is provided with a placement groove, and the container is arranged in the placement groove.

[0020] Optionally, the absorbent body further comprises a bubble-blocking member, which is disposed in the container; along the direction of gravity, the bubble-blocking member is located above the dissolution-aiding member and is at least partially immersed in the dissolving liquid, wherein:

[0021] The container includes an exhaust port; the bubble-blocking member is located between the dissolution-aiding member and the exhaust port, and is disposed close to the exhaust port;

[0022] and / or,

[0023] The bubble-blocking member is a sheet-like structure, and the entire outer peripheral wall of the bubble-blocking member abuts against the inner wall of the container; the bubble-blocking member includes filter cotton.

[0024] Optionally,

[0025] The gas outlet of the gas driving member is connected to a pipeline, the pipeline extends into the container and is connected to the dissolution-aiding member;

[0026] The pipeline is provided with a valve, and the valve is used to control the opening or disconnection of the pipeline.

[0027] Optionally, a second air inlet is provided on the shell, and the second air inlet is communicated with the internal space;

[0028] or,

[0029] A second air inlet is provided on the shell, and the second air inlet is connected to the internal space; along the direction of gravity, the second air inlet is located at the upper part of the shell, and the absorption component is located at the lower part of the shell;

[0030] or,

[0031] The three-dimensional printing device further includes a detection element, which is disposed on the housing and electrically connected to the gas driving element, and is used to detect the concentration of the gas in the internal space;

[0032] or,

[0033] The absorption assembly further includes a sealing member, which is disposed outside the gas driving member and at least wraps the motor of the gas driving member;

[0034] or,

[0035] The three-dimensional printing device also includes a printing platform, a printing component and a post-processing component;

[0036] The post-processing component is arranged in the shell; the printing platform is movably arranged in the shell; the printing component is movably arranged in the shell, and the printing component is used to move between a first position and a second position relative to the shell. In the first position, the printing component is located in the moving path of the printing platform, and the printing platform is used to move relative to the printing component to print the model. In the second position, the printing component leaves the moving path of the printing platform, and the printing platform is used to move relative to the post-processing component so that the post-processing component performs post-processing on the model.

[0037] Optionally, the three-dimensional printing device further includes a printing platform, a printing component and a post-processing component;

[0038] The post-processing assembly is disposed in the housing; the printing platform is movably disposed in the housing; the printing assembly is movably disposed in the housing, and the printing assembly is used to move between a first position and a second position relative to the housing. In the first position, the printing assembly is located in a movement path of the printing platform, and the printing platform is used to move relative to the printing assembly to print a model. In the second position, the printing assembly leaves the movement path of the printing platform, and the printing platform is used to move relative to the post-processing assembly so that the post-processing assembly performs post-processing on the model.

[0039] The post-processing component includes a cleaning component, a post-curing component and an air-drying component;

[0040] When the printing assembly is in the first position, along the direction of gravity, the cleaning assembly is located below the printing assembly, and the post-curing assembly and the air-drying assembly are respectively located around the printing assembly. The cleaning assembly is used to clean the model, the post-curing assembly is used to emit curing light toward the moving path of the printing platform, and the air-drying assembly is used to generate airflow toward the moving path of the printing platform.

[0041] On the other hand, an embodiment of the present invention further provides a control method for a 3D printing device, which is applied to the aforementioned 3D printing device. The 3D printing device includes a detection component, which is disposed in the housing and electrically connected to the gas driving component. The control method includes:

[0042] obtaining a gas concentration in the interior space of the housing based on the detection element;

[0043] When the gas concentration is greater than or equal to a preset concentration, the gas driving member is controlled to operate so that the gas driving member absorbs the gas in the internal space into the absorption body.

[0044] Optionally, the three-dimensional printing device further includes a printing component, the printing component including a material slot for holding printing material and a curing device arranged below the material slot, a tension sensor is arranged on the printing platform or on the material slot, and the control method further includes: collecting tension data through the tension sensor, eliminating abnormal values ​​in the tension data, determining a target weight according to a peak value in the tension data after eliminating the abnormal values, determining a tension change threshold according to a weight range to which the target weight belongs, and if the tension change value within a time period is less than the tension change threshold or the target weight is less than a preset weight, it is determined that the light is turned off and the process ends, wherein the tension data is updated in real time according to time changes;

[0045] or,

[0046] The control method further includes: controlling the gas driving element to stop operating when the gas concentration is less than the preset concentration; or controlling the gas driving element to stop operating after operating for a preset time period when the gas concentration is less than the preset concentration;

[0047] or,

[0048] The three-dimensional printing device also includes a printing platform, a printing component and a post-processing component. The printing component is used to move between a first position and a second position relative to the shell. The control method also includes: when the printing component is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing component to print the model; when the printing of the model is completed, controlling the printing component to move to the second position; and controlling the printing platform to move relative to the post-processing component to subsequently process the model.

[0049] Optionally, the three-dimensional printing device further includes a printing platform, a printing assembly, and a post-processing assembly, wherein the printing assembly is configured to move between a first position and a second position relative to the housing; the control method further includes: when the printing assembly is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing assembly to print the model; when printing of the model is completed, controlling the printing assembly to move to the second position; and controlling the printing platform to move relative to the post-processing assembly to subsequently process the model, wherein:

[0050] The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; and controlling the air-drying component to operate to air-dry the model.

[0051] or,

[0052] The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; controlling the air-drying component to operate to air-dry the model; the post-processing component also includes a post-curing component. After controlling the air-drying component to operate to air-dry the model, the control method further includes: controlling the post-curing component to operate to cure the model;

[0053] or,

[0054] The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to subsequently process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; controlling the air-drying component to operate to air-dry the model; the post-processing component also includes a post-curing component, and after controlling the air-drying component to operate to air-dry the model, the control method further includes: controlling the post-curing component to operate to cure the model; the preset time is determined according to the curing time of the model.

[0055] By means of the above technical solution, the present invention has at least the following beneficial effects:

[0056] In the technical solution provided by an embodiment of the present invention, an absorption assembly is disposed within a housing and includes an absorption body and a gas-driven element. A first air inlet of the gas-driven element communicates with the interior space of the housing, and an air outlet of the gas-driven element communicates with the absorption body, allowing the gas-driven element to draw gas from the interior space into the absorption body, thereby causing the absorption body to absorb the gas. In other words, when a large amount of gaseous alcohol is present within the device due to cleaning the mold, the gas-driven element can be activated to draw the gas from the interior space into the absorption body, causing the absorption body to absorb the gaseous alcohol, thereby reducing the concentration of alcohol within the device and preventing alcohol from escaping, thereby avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic structural diagram of a printing component in a first position in a three-dimensional printing device provided by an embodiment of the present invention;

[0058] Figure 2 An exploded schematic diagram of an absorption component in a three-dimensional printing device provided by an embodiment of the present invention;

[0059] Figure 3 A schematic cross-sectional view of a three-dimensional printing device provided by an embodiment of the present invention;

[0060] Figure 4 A schematic structural diagram of a printing component in a second position in a three-dimensional printing device provided by an embodiment of the present invention;

[0061] Figure 5 A schematic diagram of a partial structure of a three-dimensional printing device provided in an embodiment of the present invention;

[0062] Figure 6 The present invention provides a flow chart of a method for controlling a three-dimensional printing device.

[0063] Description of reference numerals:

[0064] 1-shell; 11-internal space; 12-placement tank; 2-absorption component; 21-gas driving component; 22-container; 23-dissolving component; 24-foaming component; 25-sealing component; 26-mounting component; 3-printing platform; 4-printing component; 5-cleaning component; 6-post-curing component. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the present invention clearer, some implementation methods of the embodiments of the present invention will be described in detail below in conjunction with the drawings in the preferred embodiments of the present invention. Unless there is a conflict, the following embodiments and features in the embodiments can be combined with each other.

[0066] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a 3D printing device, which can be a 3D printing device or a post-processing device such as a cleaning machine. The 3D printing device includes a housing 1 defining an interior space 11; an absorption assembly 2 disposed within the housing 1. The absorption assembly 2 includes an absorption body and a gas driver 21. A first air inlet of the gas driver 21 communicates with the interior space 11, and an air outlet of the gas driver 21 communicates with the absorption body. The gas driver 21 is configured to draw gas from the interior space 11 into the absorption body, so that the absorption body absorbs the gas. Specifically, the gas driver 21 can be an air pump.

[0067] In the 3D printing device provided by an embodiment of the present invention, an absorption assembly 2 is disposed within a housing 1 and includes an absorption body and a gas driver 21. A first air inlet of the gas driver 21 communicates with the interior space 11 of the housing 1, and an air outlet of the gas driver 21 communicates with the absorption body, allowing the gas driver 21 to draw gas from the interior space 11 into the absorption body, thereby causing the absorption body to absorb the gas. In other words, when a large amount of alcohol gas is present within the device due to cleaning a model, the gas driver 21 can be activated to draw the gas from the interior space 11 into the absorption body, allowing the absorption body to absorb the alcohol gas. This reduces the alcohol concentration within the device, prevents alcohol from escaping, and thus avoids potential safety hazards.

[0068] In some embodiments, see Figure 2 The absorbing body may include a container 22 and a dissolving aid 23. The container 22 is provided in the housing 1. The container 22 stores the dissolving liquid. The dissolving aid 23 is provided in the container 22 and is at least partially immersed in the dissolving liquid. The gas driving member 21 is used to suck the gas into the container 22. The dissolving aid 23 is used to help the gas dissolve in the dissolving liquid.

[0069] The container 22 stores a dissolving liquid, which can be any type of organic solvent such as water, ether, chloroform, glycerol or methanol, as long as it can dissolve the gaseous alcohol.

[0070] In the above embodiment, a dissolving aid 23 is provided in the container 22, so that when the gas driving member 21 is started, the gaseous alcohol in the internal space 11 of the shell 1 can be sucked into the container 22, and the dissolving aid 23 helps the alcohol to dissolve in the dissolving liquid, thereby improving the dissolution efficiency of the alcohol and further improving the absorption effect of the absorption component 2 on the alcohol.

[0071] It can be understood that the gas outlet of the gas driving member 21 can be extended into the container 22 through a pipeline and immersed in the solvent, so that the inhaled alcohol gas can be dissolved in the solvent.

[0072] Furthermore, the dissolution-aiding member 23 can have various structural forms, as long as it can help dissolve alcohol in the solvent. For example, the dissolution-aiding member can include a main body with a plurality of fan blades spaced apart around the circumference of the main body, and the main body is rotatably disposed within the container 22. During the rotation of the main body, the plurality of fan blades rotate with the main body, thereby shearing the alcohol bubbles inhaled into the container 22, thereby dispersing the inhaled alcohol gas into a plurality of small bubbles, which are more easily dissolved in the solvent.

[0073] To achieve structural simplicity and reliability, in some embodiments, the dissolution-aiding member 23 may be a porous structure, and the porous structure of the dissolution-aiding member 23 is connected to the gas outlet of the gas driving member 21. Specifically, the gas outlet of the gas driving member 21 may be connected to the dissolution-aiding member 23 through a pipeline.

[0074] Since the dissolving aid 23 is a porous structure and is connected to the air outlet of the gas driving component 21, the alcohol gas inhaled by the gas driving component 21 can enter the porous structure and be decomposed into a number of tiny bubbles under the action of the porous structure. The tiny bubbles are more easily dissolved in the solvent, thereby improving the dissolution efficiency of the alcohol and further improving the absorption effect of the absorption component 2 on the alcohol; moreover, the structure is simple and reliable to use.

[0075] The porous structure may be of various types. For example, the dissolution aid 23 may include air stones, natural rocks, or wooden coverings.

[0076] In some embodiments, the dissolution-aiding member 23 is disposed at the bottom of the container 22. In other words, the dissolution-aiding member 23 is disposed at the bottom of the solution. Since the alcohol gas is decomposed into numerous small bubbles, these bubbles tend to move upward, toward the liquid surface. Therefore, placing the dissolution-aiding member 23 at the very bottom of the solution increases the travel distance of the small bubbles in the solution, thereby increasing the amount of alcohol dissolved, further improving the alcohol dissolution efficiency, and enhancing the alcohol absorption effect of the absorption assembly 2.

[0077] In some embodiments, see Figure 2 The absorption body may further include a bubble preventing member 24, which is disposed in the container 22; along the direction of gravity, the bubble preventing member 24 is located above the dissolving aid member 23 and is at least partially immersed in the dissolving liquid.

[0078] In the above embodiment, the bubble-blocking member 24 is arranged above the dissolution-aiding member 23. During the upward movement of the decomposed alcohol small bubbles, if they do not have time to dissolve in the solvent, they can be blocked by the bubble-blocking member 24 to prevent the bubbles from escaping from the container 22. Moreover, more alcohol small bubbles can be dissolved in the solvent, thereby further improving the dissolution efficiency of alcohol and improving the absorption effect of the absorption component 2 on alcohol.

[0079] In some embodiments, the container 22 may include an exhaust port, and the bubble inhibitor 24 is located between the dissolution aid 23 and the exhaust port, and is disposed near the exhaust port. In this way, the bubble inhibitor 24 can prevent alcohol bubbles from escaping from the exhaust port, thereby ensuring that purified gas is discharged from the exhaust port.

[0080] In some embodiments, see Figure 2 The bubble stopper 24 may be a sheet-like structure, and the entire outer peripheral wall of the bubble stopper 24 abuts against the inner wall of the container 22, so that the bubble stopper 24 blocks bubbles and prevents bubbles from escaping through the gap between the bubble stopper 24 and the container 22, thereby improving the reliability of the bubble stopper 24. Specifically, the bubble stopper 24 may include filter cotton.

[0081] In some embodiments, the gas driving member 21 is disposed in the housing 1 and is located outside the container 22. In the direction of gravity, the gas driving member 21 can be located above the container 22. The gas driving member 21 can be mounted on the housing 1 via a mounting member 26.

[0082] In the above embodiment, since the gas driving member 21 is located above the container 22, when the gas driving member 21 stops running, the dissolved liquid in the container 22 is not easy to flow back into the internal space 11 of the shell 1 through the pipeline and the gas driving member 21, thereby avoiding contamination of the equipment.

[0083] In order to further ensure that the dissolved liquid does not flow back into the internal space 11 of the housing 1, in some embodiments, the gas outlet of the gas driving member 21 is connected to a pipeline, which extends into the container 22 and is connected to the dissolving aid 23; a valve is provided on the pipeline, which is used to control the opening or disconnection of the pipeline.

[0084] When the absorption component 2 needs to absorb the gas in the internal space 11, the gas drive 21 can be started and the valve can be opened at the same time to ensure that the gas in the internal space 11 is sucked into the container 22; when the gas absorption is completed, the valve can be closed first, and then the gas drive 21 can be controlled to stop running, or the valve can be closed and the gas drive 21 can be controlled to stop running at the same time, so as to ensure that the dissolved liquid will not flow back into the internal space 11 of the shell 1 through the pipeline and the gas drive 21, thereby more reliably avoiding contamination of the equipment.

[0085] In some embodiments, the housing 1 is provided with a second air inlet. The specific location of the second air inlet is not limited in this embodiment. The second air inlet is connected to the internal space 11 to achieve internal airflow. For example, in some embodiments of the present application, the housing 1 is provided with a second air inlet, which is connected to the internal space 11. In the direction of gravity, the second air inlet is located at the upper portion of the housing 1, and the absorption assembly 2 is located at the lower portion of the housing 1.

[0086] When the gas driving member 21 is started, since the shell 1 is provided with a second air inlet, external air will enter the internal space 11 of the shell 1 through the second air inlet, so that the gaseous alcohol in the internal space 11 can be sucked into the container 22.

[0087] Alternatively, when the gas driving member 21 is started, since a second air inlet is provided on the shell 1, and the second air inlet is located at the upper part of the shell 1, and the absorption component 2 is located at the lower part of the shell 1, the gas entering the shell 1 from the outside through the second air inlet will pass through the entire internal space 11 of the shell 1, so that almost all of the gaseous alcohol in the internal space 11 can be sucked into the container 22, thereby further improving the absorption effect of the absorption component 2 on the alcohol in the device.

[0088] In some embodiments, the three-dimensional printing device may further include a detection component, which is disposed in the housing 1 and electrically connected to the gas driving component 21 , and is used to detect the concentration of the gas in the internal space 11 .

[0089] Among them, the detection part can detect the alcohol concentration in the internal space 11 in real time. Specifically, the detection part can be an instrument that can detect the alcohol concentration, such as an alcohol concentration detector, etc. Moreover, the detection head of the detection part can be set in the internal space 11 to detect the alcohol concentration in the internal space 11.

[0090] When the alcohol concentration in the internal space 11 exceeds a preset concentration, the gas driving element 21 can be controlled to operate to draw the gaseous alcohol in the internal space 11 into the container 22 of the absorption body, thereby dissolving the alcohol in the solvent. When the alcohol concentration in the internal space 11 is lower than the preset concentration, the gas driving element 21 can be controlled to stop operating. Of course, to ensure the absorption effect of the absorption assembly 2 on alcohol, the gas driving element 21 can be controlled to stop operating after a preset period of time has passed when the alcohol concentration is lower than the preset concentration.

[0091] In some embodiments, see Figure 2 The absorption component 2 further includes a seal 25 , which is disposed outside the gas driving component 21 , and the seal 25 at least wraps the motor of the gas driving component 21 .

[0092] Since a gas-driven component 21, such as an air pump, typically includes a motor, which is typically a brushed motor, brushed motors are prone to generating sparks during operation. To prevent safety hazards such as explosions caused by sparks encountering alcohol, in the above embodiment, a seal 25 is provided on the exterior of the gas-driven component 21. The seal 25 can at least enclose the motor of the gas-driven component 21, thereby preventing the sparks from being exposed and reducing safety hazards. Specifically, the seal 25 can be a silicone sleeve that can be fitted over the exterior of the gas-driven component 21.

[0093] In some embodiments, see Figure 1 and Figure 4 The bottom of the shell 1 may be provided with a placement groove 12, and the container 22 is arranged in the placement groove 12.

[0094] In some embodiments, see Figure 1 、 Figure 3 、 Figures 4 and 5 The three-dimensional printing device may further include a printing platform 3, a printing component 4 and a post-processing component; the post-processing component is arranged in the shell 1; the printing platform 3 is movably arranged in the shell 1; the printing component 4 is movably arranged in the shell 1, and the printing component 4 is used to move between a first position and a second position relative to the shell 1. In the first position, the printing component 4 is located in the moving path of the printing platform 3, and the printing platform 3 is used to move relative to the printing component 4 to print the model. In the second position, the printing component 4 leaves the moving path of the printing platform 3, and the printing platform 3 is used to move relative to the post-processing component so that the post-processing component performs post-processing on the model.

[0095] When the printing assembly 4 is in the first position, the printing assembly 4 can be located in the moving path of the printing platform 3, and the printing platform 3 can move to the printing assembly 4 to print the model. When the printing assembly 4 is in the second position, the printing assembly 4 can leave the moving path of the printing platform 3 to avoid the printing platform 3, so that the printing platform 3 can move to the post-processing assembly, so that the post-processing assembly can perform post-processing on the model. In this way, when it is necessary to print the model, the printing assembly 4 can be controlled to move to the first position, and the printing platform 3 can move relative to the printing assembly to print the model. When the model is printed, if it is necessary to perform post-processing on the model, such as cleaning and curing the model, the printing assembly 4 can be controlled to move to the second position, and the printing platform 3 can move relative to the post-processing assembly to perform post-processing on the model. In other words, the three-dimensional printing device provided by the embodiment of the present invention can not only print the model, but also perform post-processing on the model, so that the post-processing of the model no longer requires the use of other equipment, and the workflow is simple, the operation is convenient, and the printing efficiency is improved.

[0096] In some embodiments, see Figure 3 、 Figure 4 and Figure 5The post-processing component may include a cleaning component 5, a post-curing component 6 and an air-drying component; when the printing component 4 is in the first position, along the direction of gravity, the cleaning component 5 is located below the printing component 4, and the post-curing component 6 and the air-drying component are respectively located around the printing component 4, the cleaning component 5 is used to clean the model, the post-curing component 6 is used to emit curing light toward the moving path of the printing platform 3, and the air-drying component is used to generate airflow toward the moving path of the printing platform 3.

[0097] When it is necessary to print a model, the printing component 4 can be controlled to move to the first position, and the printing platform 3 can move relative to the printing component to print the model. When the model is printed and needs to be cleaned, the printing component 4 can be controlled to move to the second position, and then the printing platform 3 can be controlled to move downward to the cleaning component 5, so that the cleaning component 5 cleans the model. After the model is cleaned, the printing platform 3 can be controlled to move upward so that the air-drying component and the post-curing component 6 can air-dry and re-cur the model.

[0098] The printing component 4 may include a bracket and a material trough, a light source module, an exposure screen, etc. provided on the bracket; the cleaning component 5 may include a barrel body, wherein a cleaning liquid, such as alcohol, is stored in the barrel body. The air-drying component may include at least one fan, and the air outlet of the fan is oriented toward the moving path of the printing platform 3; if there are multiple fans, the multiple fans are arranged at intervals along the circumference of the shell 1. The post-curing component 6 may include a light-curing light strip, which is provided on the inner wall of the shell 1 and extends along the circumference of the shell 1; the light outlet of the light-curing light strip is oriented toward the moving path of the printing platform 3.

[0099] like Figure 6 As shown, an embodiment of the present invention further provides a control method for a three-dimensional printing device, which is applied to the aforementioned three-dimensional printing device. The control method includes:

[0100] 101. Obtaining a gas concentration in the internal space of the housing based on the detection element;

[0101] 102. When the gas concentration is greater than or equal to a preset concentration, control the gas driving member to operate so that the gas driving member absorbs the gas in the internal space into the absorption body.

[0102] The control method of the three-dimensional printing device provided by the embodiment of the present invention obtains the gas concentration in the internal space of the shell based on the detection component; when the gas concentration is greater than or equal to the preset concentration, the gas driving component is controlled to operate so that the gas driving component draws the gas alcohol in the internal space into the absorption body, thereby causing the absorption body to absorb the alcohol.

[0103] In an embodiment of the present invention, the control method may further include:

[0104] When the gas concentration is less than a preset concentration, the gas driving component is controlled to stop running; or, when the gas concentration is less than a preset concentration, the gas driving component is controlled to stop running after running for a preset time.

[0105] When the alcohol concentration in the internal space is lower than a preset concentration, the gas drive is controlled to stop running; or, after the gas drive has been controlled to run for a preset period of time, the gas drive is controlled to stop running, thereby ensuring that the alcohol concentration in the internal space of the shell is always lower than the preset concentration, thereby preventing alcohol from escaping and better avoiding safety hazards.

[0106] In an embodiment of the present invention, the control method may further include:

[0107] When the printing assembly is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing assembly to print the model;

[0108] When the model printing is completed, controlling the printing assembly to move to the second position;

[0109] Control the movement of the printing platform relative to the post-processing component to process the model.

[0110] Among them, when the printing component is in the first position, the printing surface of the printing platform corresponds to the opening of the material trough. In response to the printing instruction, the printing platform can move downward into the material trough of the printing component. At the same time, the curing light emitted by the light source module of the printing component is projected into the material trough through the exposure screen, thereby realizing the printing operation of the model.

[0111] In one embodiment of the present application, the printing component includes a material tank for holding printing material and a curing device arranged below the material tank. The material tank contains liquid material for printing the model. By pressing down the printing platform to move it to the target layer height of the model layer to be printed in the material tank, the curing device exposes and prints the printing material in the material tank according to the layer pattern of the model to be printed, thereby obtaining a model layer grown on the printing platform. At the same time, the printing platform is raised to detach the model layer, and the lowering and raising movement process is repeated to realize model printing.

[0112] During the 3D stereolithography process, the build platform, along with the model, descends to a specified height before each layer is exposed. This process causes resin to flow in all directions. If exposure begins immediately after the build platform stops descending, incomplete resin reflow in the exposed area can lead to model fractures, abnormal layer thicknesses, and defects. After the build platform stops descending, the resin is given a certain amount of reflow time, also known as the "flash-off time," to ensure smooth resin flow in the cartridge during exposure. Conventional techniques generally rely on the exposure area of ​​each layer. Larger exposure areas cause greater resin disturbance, resulting in longer flash-off times. However, the exposure time required for the current layer depends on the model's active area, the model's contour area, the resin type, the machine's status (including the release film, the Z-axis descent speed), the difference in flash-off times before and after the platform's discharge surface, the amount of resin remaining in the cartridge, and the build platform size:cartridge discharge ratio (depending on the machine model). Therefore, using only the active area of ​​the model to quantify flash-off time is not accurate enough.

[0113] Therefore, in the implementation scheme of the present application, a tension sensor is provided on the printing platform or on the material slot to detect the tension exerted on the printing platform during the model printing process, so as to characterize the effective area of ​​the model, the contour area of ​​the model, the resin type, the machine status: the release film, the Z-axis descending speed, the inconsistency of the light-off time before and after the platform exits the liquid surface, the remaining resin amount in the material box, the platform size, the liquid discharge ratio of the material box and other disturbance information according to the tension, so as to further determine the light-off time according to the tension time.

[0114] Specifically, a tension sensor can be set on the printing platform to detect the tension exerted on the printing platform, and by collecting tension data within a time period, after eliminating abnormal values ​​in the tension data (for example, eliminating abnormal values ​​based on a median filtering method), the maximum value, median value, average value, or any other value that can represent the tension value within the time period is used as the target tension value, and the target weight corresponding to the target tension is determined based on the target tension, and the tension change threshold is further determined based on the weight range to which the target weight belongs. If the tension change value within the time period is less than the tension change threshold, it is determined that the light is turned off and the end is reached, or if the target weight corresponding to the target tension is less than the preset weight, it is determined that the light is turned off and the end is reached.

[0115] For example, there may be two conditions for determining the end of the light-off period: 1: the greater the pressure under the tension change rate, the more demanding it is;

[0116] Set different change rate judgment conditions based on the downward pressure during printing of this layer;

[0117] According to the downward pressure from large to small, the change rate meets the conditions as follows:

[0118] If the peak downforce exceeds 15kg (target tension determines the target weight corresponding to the target tension), and the downforce change within 5 seconds (tension change value) does not exceed 300g (tension change threshold), this condition is met:

[0119] If the downward force exceeds 10 kg and is less than 15 kg, and the downward force does not change by more than 200 grams within 3 seconds, this condition is met;

[0120] If the peak downward pressure exceeds 5kg and is less than 10kg, and the downward pressure does not change by more than 100g within 2 seconds, this condition is met;

[0121] If the peak downward pressure is less than 5 kg (for the first 100 layers) and the downward pressure does not change by more than 100 grams within 2 seconds, this condition is met;

[0122] If the peak downward pressure is less than 5kg (after 100 layers), and the downward pressure does not change by more than 20g within 0.5 seconds, this condition is satisfied (the frequency of data processing is accelerated at this time. The median value of tension is taken once every 150ms before, and now it is (30ms);

[0123] 2. Light-off end condition 2: Downforce threshold

[0124] This condition is met when the lower pressure is less than 10 kg;

[0125] When both conditions 1 and 2 are met,

[0126] The resin reflow is determined to be completed and the curing device starts exposure. When condition 1 is met but condition 2 is not met, the light is turned off for 2 seconds and then exposure starts. After the light-off compensation is turned on, the maximum light-off time is 100 seconds and the minimum is 0.5 seconds.

[0127] When the model is printed, the printing platform and the model are away from the trough. At this time, the printing component can be controlled to move from the first position to the second position so that the printing component leaves the moving path of the printing platform, thereby avoiding the printing platform, so that the printing platform can move along its moving path relative to the post-processing component to process the model later.

[0128] In the embodiment of the present invention, controlling the movement of the printing platform relative to the post-processing component to post-process the model may specifically include:

[0129] The printing platform is controlled to move relative to the cleaning component to clean the model. In other words, the printing platform can be controlled to move to the cleaning component to clean the model.

[0130] In an embodiment of the present invention, after controlling the printing platform to move relative to the cleaning component to clean the model, the control method may further include:

[0131] Control the printing platform to move to the air-drying component;

[0132] Control the operation of the air-drying component to air-dry the model.

[0133] After the model is cleaned, it can be air-dried using the air-drying assembly before being cured, thereby improving the curing effect. Specifically, after the model is cleaned, the printing platform can be controlled to move the model upward to the air-drying assembly, and the air-drying assembly's fan can be activated to generate airflow toward the model, thereby drying the model. After the fan has run for a certain period of time, the model is completely air-dried and can be controlled to stop.

[0134] It can be understood that the step of operating the gas-driven component can be performed after the air-drying step to better avoid the driving force generated by the gas-driven component from affecting the working effect of the air-drying component; alternatively, the step of operating the gas-driven component can also be performed simultaneously with the air-drying step, so as to achieve air-drying of the model and absorption of alcohol.

[0135] In the embodiment of the present invention, after controlling the air-drying component to operate to air-dry the model, the control method further includes: controlling the post-curing component 6 to operate to cure the model.

[0136] When the model is air-dried, the curing light strips of the post-curing assembly 6 can be controlled to illuminate to cure the model. It is understood that the post-curing assembly 6 can be controlled to operate after the model is air-dried to perform a secondary curing of the air-dried model; alternatively, the model can be subjected to a secondary curing and air-drying process simultaneously.

[0137] In an embodiment of the present invention, when the gas concentration in the internal space is less than a preset concentration, the gas-driven component is controlled to operate for a preset time period and then stop. The preset time period can be determined based on the curing time of the model. In other words, the gas-driven component can continue to operate for a certain period of time after the model's secondary curing is complete, thereby ensuring both air drying and alcohol absorption by the absorption component.

[0138] Embodiment 1: A three-dimensional printing device, comprising:

[0139] The housing 1 defines an interior space 11;

[0140] The absorption component 2 is arranged in the shell 1. The absorption component 2 includes an absorption body and a gas driving component 21. The first air inlet of the gas driving component 21 is connected to the internal space 11, and the air outlet of the gas driving component 21 is connected to the absorption body. The gas driving component 21 is used to suck the gas in the internal space 11 into the absorption body so that the absorption body absorbs the gas.

[0141] Example 2: The three-dimensional printing device according to Example 1,

[0142] The absorption body includes a container 22 and a dissolution aid 23. The container 22 is provided in the housing 1. The container 22 stores the dissolution liquid. The dissolution aid 23 is provided in the container 22 and is at least partially immersed in the dissolution liquid.

[0143] The gas driving member 21 is used to draw gas into the container 22 , and the dissolving aid 23 is used to help the gas dissolve in the dissolving liquid.

[0144] Example 3: The three-dimensional printing device according to Example 2,

[0145] The dissolution-promoting member 23 is a porous structure, and the porous structure of the dissolution-promoting member 23 is connected to the gas outlet of the gas driving member 21;

[0146] The dissolution aid 23 includes air stone or natural rock.

[0147] Example 4: The three-dimensional printing device according to Example 2,

[0148] The dissolution-aiding member 23 is disposed at the bottom of the container 22 .

[0149] Example 5: The three-dimensional printing device according to Example 2,

[0150] The absorbent body further includes a bubble-blocking member 24 , which is disposed within the container 22 ;

[0151] Along the gravity direction, the bubble-blocking member 24 is located above the dissolution-aiding member 23 and is at least partially immersed in the dissolving liquid.

[0152] Example 6: The three-dimensional printing device according to Example 5,

[0153] The container 22 includes a vent;

[0154] The bubble-preventing member 24 is located between the dissolution-aiding member 23 and the exhaust port, and is disposed close to the exhaust port.

[0155] Example 7: The three-dimensional printing device according to Example 5,

[0156] The bubble-blocking member 24 is a sheet-like structure, and the entire outer peripheral wall of the bubble-blocking member 24 abuts against the inner wall of the container 22;

[0157] The bubble preventing member 24 includes filter cotton.

[0158] Example 8: The three-dimensional printing device according to Example 2,

[0159] The gas driving member 21 is provided in the housing 1 and is located outside the container 22;

[0160] In the direction of gravity, the gas driving member 21 is located above the container 22 .

[0161] Example 9: The three-dimensional printing device according to Example 8,

[0162] The gas outlet of the gas driving member 21 is connected to a pipeline, which extends into the container 22 and is connected to the dissolution-aiding member 23;

[0163] A valve is provided on the pipeline, which is used to control the opening or disconnection of the pipeline.

[0164] Example 10: The three-dimensional printing device according to Example 1,

[0165] The housing 1 is provided with a second air inlet, which is communicated with the internal space 11;

[0166] or;

[0167] A second air inlet is provided on the shell 1 and is communicated with the internal space 11 ; along the direction of gravity, the second air inlet is located at the upper portion of the shell 1 , and the absorption assembly 2 is located at the lower portion of the shell 1 .

[0168] Example 11: The three-dimensional printing device according to Example 1, further comprising:

[0169] The detection element is provided in the housing 1 and is electrically connected to the gas driving element 21 . The detection element is used to detect the concentration of the gas in the internal space 11 .

[0170] Example 12: The three-dimensional printing device according to Example 1,

[0171] The absorption assembly 2 further includes a sealing member 25 , which is disposed outside the gas driving member 21 . The sealing member 25 at least wraps the motor of the gas driving member 21 .

[0172] Example 13: The three-dimensional printing device according to Example 2,

[0173] A placement groove 12 is provided at the bottom of the housing 1 , and the container 22 is disposed in the placement groove 12 .

[0174] Example 14: The three-dimensional printing device according to Example 1, further comprising:

[0175] Printing platform 3, printing component 4 and post-processing component;

[0176] The post-processing component is arranged in the housing 1;

[0177] The printing platform 3 is movably arranged in the housing 1;

[0178] The printing component 4 is movably arranged on the shell 1, and the printing component 4 is used to move between a first position and a second position relative to the shell 1. In the first position, the printing component 4 is located in the moving path of the printing platform 3, and the printing platform 3 is used to move relative to the printing component 4 to print the model. In the second position, the printing component 4 leaves the moving path of the printing platform 3, and the printing platform 3 is used to move relative to the post-processing component so that the post-processing component can post-process the model.

[0179] Example 15: The three-dimensional printing device according to Example 14,

[0180] The post-processing component includes a cleaning component 5, a post-curing component 6 and an air-drying component;

[0181] When the printing component 4 is in the first position, along the direction of gravity, the cleaning component 5 is located below the printing component 4, and the post-curing component 6 and the air-drying component are respectively located around the printing component 4. The cleaning component 5 is used to clean the model, the post-curing component 6 is used to emit curing light toward the moving path of the printing platform 3, and the air-drying component is used to generate airflow toward the moving path of the printing platform 3.

[0182] Example 16: A control method for a three-dimensional printing device, applied to the three-dimensional printing device of any one of Examples 1 to 15, wherein the three-dimensional printing device includes a detection component disposed in a housing and electrically connected to a gas driving component; the control method includes:

[0183] obtaining a gas concentration in the interior space of the housing based on the detection element;

[0184] When the gas concentration is greater than or equal to a preset concentration, the gas driving member is controlled to operate so that the gas driving member absorbs the gas in the internal space into the absorption body.

[0185] Example 17: According to the control method of Example 16, the control method further includes:

[0186] When the gas concentration is less than a preset concentration, the gas driving component is controlled to stop running; or, when the gas concentration is less than a preset concentration, the gas driving component is controlled to stop running after running for a preset time.

[0187] Example 18: According to the control method of Example 16, the three-dimensional printing device further includes a printing platform, a printing component, and a post-processing component, and the printing component is used to move between a first position and a second position relative to the housing;

[0188] The control method also includes:

[0189] When the printing assembly is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing assembly to print the model;

[0190] When the model printing is completed, controlling the printing assembly to move to the second position;

[0191] Control the movement of the printing platform relative to the post-processing component to process the model.

[0192] Example 19: According to the control method of Example 18, the post-processing component includes a cleaning component and an air-drying component, and controlling the printing platform to move relative to the post-processing component to process the model includes:

[0193] Control the movement of the printing platform relative to the cleaning component to clean the model;

[0194] After controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes:

[0195] Control the printing platform to move to the air-drying component;

[0196] Control the operation of the air-drying component to air-dry the model.

[0197] Example 20: According to the control method of Example 19, the post-processing component further includes a post-curing component, which controls the operation of the air-drying component to air-dry the model. The control method further includes:

[0198] Controls the post-cure component to run to cure the model.

[0199] Example 21: According to the control method of Example 20,

[0200] The preset duration is determined according to the curing time of the model.

[0201] Example 22: The control method according to Example 16,

[0202] The three-dimensional printing device also includes a printing component, the printing component includes a material slot for holding printing material and a curing device arranged below the material slot, a tension sensor is arranged on the printing platform or on the material slot, and the control method further includes: collecting tension data through the tension sensor, eliminating abnormal values ​​in the tension data, determining a target weight based on a peak value in the tension data after eliminating the abnormal values, determining a tension change threshold based on a weight range to which the target weight belongs, and if the tension change value within a time period is less than the tension change threshold or the target weight is less than a preset weight, determining that the light is turned off and the process is finished, wherein the tension data is updated in real time according to time changes;

[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-dimensional printing device, characterized in that: include: a housing defining an interior space; An absorption component is arranged in the shell, and the absorption component includes an absorption body and a gas driving member. The first air inlet of the gas driving member is connected to the internal space, and the air outlet of the gas driving member is connected to the absorption body. The gas driving member is used to suck the gas in the internal space into the absorption body so that the absorption body absorbs the gas.

2. The three-dimensional printing device according to claim 1, characterized in that: The absorption body includes a container and a dissolution-aiding member, wherein the container is provided in the shell and contains a dissolving liquid, and the dissolution-aiding member is provided in the container and is at least partially immersed in the dissolving liquid; The gas driving component is used to suck the gas into the container, and the dissolving aid component is used to help the gas dissolve in the dissolving liquid.

3. The three-dimensional printing device according to claim 2, characterized in that: The dissolution-aiding member is a porous structure, and the porous structure of the dissolution-aiding member is connected to the gas outlet of the gas driving member; the dissolution-aiding member includes air stone or natural rock; or, The dissolution-aiding component is arranged at the bottom of the container; or, The absorbent body further includes a bubble-blocking member disposed in the container; in the direction of gravity, the bubble-blocking member is located above the dissolution-aiding member and is at least partially immersed in the dissolving liquid; or, The gas driving member is provided in the housing and is located outside the container; Along the direction of gravity, the gas driving member is located above the container; or, The bottom of the shell is provided with a placement groove, and the container is arranged in the placement groove.

4. The three-dimensional printing device according to claim 3, characterized in that: The absorbent body further includes a bubble-blocking member disposed in the container; in the direction of gravity, the bubble-blocking member is located above the dissolution-aiding member and is at least partially immersed in the dissolving liquid, wherein: The container includes an exhaust port; the bubble-blocking member is located between the dissolution-aiding member and the exhaust port, and is disposed close to the exhaust port; and / or, The bubble-blocking member is a sheet-like structure, and the entire outer peripheral wall of the bubble-blocking member abuts against the inner wall of the container; the bubble-blocking member includes filter cotton.

5. The three-dimensional printing device according to claim 2, characterized in that: The gas outlet of the gas driving member is connected to a pipeline, the pipeline extends into the container and is connected to the dissolution-aiding member; The pipeline is provided with a valve, and the valve is used to control the opening or disconnection of the pipeline.

6. The three-dimensional printing device according to claim 1, characterized in that: A second air inlet is provided on the shell, and the second air inlet is communicated with the internal space; or, A second air inlet is provided on the shell, and the second air inlet is communicated with the internal space; Along the direction of gravity, the second air inlet is located at the upper part of the shell, and the absorption component is located at the lower part of the shell; or, The three-dimensional printing device further includes a detection element, which is disposed on the housing and electrically connected to the gas driving element, and is used to detect the concentration of the gas in the internal space; or, The absorption assembly further includes a sealing member, which is disposed outside the gas driving member and at least wraps the motor of the gas driving member; or, The three-dimensional printing device also includes a printing platform, a printing component and a post-processing component; the post-processing component is arranged in the shell; the printing platform is movably arranged in the shell; the printing component is movably arranged in the shell, and the printing component is used to move between a first position and a second position relative to the shell. In the first position, the printing component is located in the moving path of the printing platform, and the printing platform is used to move relative to the printing component to print the model. In the second position, the printing component leaves the moving path of the printing platform, and the printing platform is used to move relative to the post-processing component so that the post-processing component performs post-processing on the model.

7. The three-dimensional printing device according to claim 6, characterized in that: The three-dimensional printing device also includes a printing platform, a printing component and a post-processing component; The post-processing assembly is disposed in the housing; the printing platform is movably disposed in the housing; the printing assembly is movably disposed in the housing, and the printing assembly is used to move between a first position and a second position relative to the housing. In the first position, the printing assembly is located in a movement path of the printing platform, and the printing platform is used to move relative to the printing assembly to print a model. In the second position, the printing assembly leaves the movement path of the printing platform, and the printing platform is used to move relative to the post-processing assembly so that the post-processing assembly performs post-processing on the model. The post-processing component includes a cleaning component, a post-curing component and an air-drying component; When the printing assembly is in the first position, along the direction of gravity, the cleaning assembly is located below the printing assembly, and the post-curing assembly and the air-drying assembly are respectively located around the printing assembly. The cleaning assembly is used to clean the model, the post-curing assembly is used to emit curing light toward the moving path of the printing platform, and the air-drying assembly is used to generate airflow toward the moving path of the printing platform.

8. A control method for a three-dimensional printing device, applied to the three-dimensional printing device according to any one of claims 1 to 7, characterized in that: The three-dimensional printing device includes a detection component, which is arranged on the housing and electrically connected to the gas driving component; the control method includes: obtaining a gas concentration in the interior space of the housing based on the detection element; When the gas concentration is greater than or equal to a preset concentration, the gas driving member is controlled to operate so that the gas driving member absorbs the gas in the internal space into the absorption body.

9. The control method according to claim 8, characterized in that: The three-dimensional printing device also includes a printing component, the printing component includes a material slot for holding printing material and a curing device arranged below the material slot, a tension sensor is arranged on the printing platform or on the material slot, and the control method further includes: collecting tension data through the tension sensor, eliminating abnormal values ​​in the tension data, determining a target weight based on a peak value in the tension data after eliminating the abnormal values, determining a tension change threshold based on a weight range to which the target weight belongs, and if the tension change value within a time period is less than the tension change threshold or the target weight is less than a preset weight, determining that the light is turned off and the process is finished, wherein the tension data is updated in real time according to time changes; or, The control method further includes: controlling the gas driving element to stop operating when the gas concentration is less than the preset concentration; or controlling the gas driving element to stop operating after operating for a preset time period when the gas concentration is less than the preset concentration; or, The three-dimensional printing device also includes a printing platform, a printing component and a post-processing component. The printing component is used to move between a first position and a second position relative to the shell. The control method also includes: when the printing component is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing component to print the model; when the printing of the model is completed, controlling the printing component to move to the second position; and controlling the printing platform to move relative to the post-processing component to subsequently process the model.

10. The control method according to claim 9, characterized in that: The three-dimensional printing device further includes a printing platform, a printing assembly, and a post-processing assembly, wherein the printing assembly is configured to move between a first position and a second position relative to the housing; the control method further includes: when the printing assembly is in the first position, in response to a printing instruction, controlling the printing platform to move relative to the printing assembly to print a model; when printing of the model is completed, controlling the printing assembly to move to the second position; and controlling the printing platform to move relative to the post-processing assembly to subsequently process the model, wherein: The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; and controlling the air-drying component to operate to air-dry the model. or, The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; controlling the air-drying component to operate to air-dry the model; the post-processing component also includes a post-curing component. After controlling the air-drying component to operate to air-dry the model, the control method further includes: controlling the post-curing component to operate to cure the model; or, The post-processing component includes a cleaning component and an air-drying component. The controlling the printing platform to move relative to the post-processing component to subsequently process the model includes: controlling the printing platform to move relative to the cleaning component to clean the model; after controlling the printing platform to move relative to the cleaning component to clean the model, the control method further includes: controlling the printing platform to move to the air-drying component; controlling the air-drying component to operate to air-dry the model; the post-processing component also includes a post-curing component, and after controlling the air-drying component to operate to air-dry the model, the control method further includes: controlling the post-curing component to operate to cure the model; the preset time is determined according to the curing time of the model.

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