Control method, device and readable storage medium of light-cured three-dimensional printing equipment

Abstract

This application provides a control method, apparatus, and readable storage medium for a photopolymerization 3D printing device, relating to the field of 3D printing technology. The photopolymerization 3D printing device includes a material tank and a light source assembly. The light source assembly emits curing light to cure the material to be cured in the material tank. The method includes: controlling the light source assembly to move along a first direction; detecting a first detection value characterizing the force on the light source assembly during its movement; and determining whether a malfunction has occurred in the photopolymerization 3D printing device based on the first detection value. In this application, by analyzing the force on the light source assembly during its movement, the malfunction of the photopolymerization 3D printing device is analyzed before or during printing, allowing for timely identification of the specific component causing the malfunction. This enables the implementation of countermeasures based on the specific malfunctioning component, preventing printing failure due to the malfunction.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to a control method for a photopolymer 3D printing device, the photopolymer 3D printing device, and a readable storage medium. Background Technology

[0002] 3D printing is a manufacturing technology that uses digital models as a basis to build up material layer by layer to create a physical model. Currently, 3D photopolymerization printing technology is one of the most widely used printing technologies. When the printing platform is below the resin surface in the tank, the curing beam emitted by the light source scans the resin in the tank according to a preset pattern through the screen. The resin in the scanned area cures rapidly, thus completing the printing process of one layer. However, equipment malfunctions are prone to occur during the printing process, which can affect the printing success rate. Summary of the Invention

[0003] In view of this, this application provides a control method for a photopolymer 3D printing device, a photopolymer 3D printing device, and a readable storage medium mixing machine, which can promptly and accurately determine the fault status of the photopolymer 3D printing device.

[0004] In a first aspect, embodiments of this application provide a control method for a photopolymerization 3D printing device, the photopolymerization 3D printing device including a material tank and a light source assembly, the light source assembly being used to emit curing light to cure the material to be cured in the material tank, the method comprising:

[0005] Control the light source assembly to move along the first direction;

[0006] During the movement of the light source assembly, a first detection value is detected to characterize the force acting on the light source assembly.

[0007] Based on the first detection value, it is determined whether the photopolymerization 3D printing equipment has malfunctioned.

[0008] The method described in the embodiments of this application may also have the following additional technical features:

[0009] Optionally, in the above technical solution, the photopolymer 3D printing equipment further includes a printing platform component for connecting the model, the printing platform component including a model connection surface; the method further includes:

[0010] Control the printing platform assembly to move to a position where the model connection surface is close to the bottom of the material tank, and control the light source assembly to move in a direction parallel to the bottom of the material tank. During the above movement: detect a second detection value to characterize the force on the light source assembly, and / or detect a third detection value to characterize the force on the printing platform assembly.

[0011] Based on one or more of the second detection value and the third detection value, it is determined whether the photopolymerization 3D printing equipment has malfunctioned.

[0012] In any of the above technical solutions, optionally, the detection of the first detection value and / or the second detection value used to characterize the force on the light source assembly includes:

[0013] During the movement of the light source assembly, a first sub-detection value is detected to characterize the force exerted on the light source assembly along the first direction;

[0014] During the movement of the light source assembly, a second sub-detection value is detected to characterize the force exerted on the light source assembly along a second direction, where the first direction is different from the second direction;

[0015] The first detection value and / or the second detection value are determined based on the first detection sub-value and the second detection sub-value.

[0016] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0017] If the third detection value is greater than the upper limit threshold of the first Z direction, or the third detection value is less than the lower limit threshold of the first Z direction, then it is determined that the material tank or the printing platform component of the photopolymerization 3D printing equipment is abnormal.

[0018] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0019] If the second sub-detection value is greater than the upper limit threshold of the second Z direction, it is determined that the release film of the photopolymer 3D printing device or the printing platform component is abnormal; if the second sub-detection value is less than the lower limit threshold of the second Z direction, it is determined that the light source component is abnormal.

[0020] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0021] If the third detection value is greater than the upper limit threshold of the first Z direction, and the second sub-detection value is greater than the lower limit threshold of the second Z direction, then it is determined that the exposure time of the light source component and / or the photosensitivity of the printing material in the hopper is abnormal.

[0022] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0023] If the first sub-detection value is greater than the upper limit threshold in the first X direction, then the release film and / or printing count of the photopolymerization 3D printing equipment are determined to be abnormal.

[0024] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0025] If the first sub-detection value is less than the lower limit threshold in the first X direction, then it is determined that there is a shortage of printing material in the material trough.

[0026] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0027] If the third detection value is less than the lower threshold of the first Z direction, and the second sub-detection value is greater than the lower threshold of the second Z direction and less than the upper threshold of the second Z direction, then the printed model is determined to be abnormal due to film separation.

[0028] In any of the above technical solutions, optionally, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0029] If the third detection value is greater than the third Z-direction lower threshold, and the second sub-detection value is greater than the second Z-direction lower threshold and less than the second Z-direction upper threshold, then it is determined that the printed model has fallen to the bottom, wherein the third Z-direction lower threshold is greater than the first Z-direction lower threshold.

[0030] In any of the above technical solutions, optionally, the first direction is perpendicular to the second direction, and the step of detecting a first sub-detection value characterizing the force on the light source assembly along the first direction during the movement of the light source assembly; and detecting a second sub-detection value characterizing the force on the light source assembly along the second direction during the movement of the light source assembly, includes:

[0031] During the movement of the light source assembly along the first direction, if the first direction is the direction in which the first side of the light source assembly faces, the first sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly.

[0032] If the first direction is the direction facing the second side of the light source assembly, the first sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly; the first side and the second side are opposite to each other.

[0033] Optionally, in any of the above technical solutions, the method further includes:

[0034] When it is determined that the photopolymer 3D printing equipment has malfunctioned, a first warning message is issued.

[0035] Optionally, in any of the above technical solutions, before controlling the light source assembly to move along the first direction, the following method is further included:

[0036] The detection value of the detection device of the photopolymerization 3D printing equipment is read, and the detection device is judged to be abnormal based on the reading of the detection value. If the detection value of the detection device is not read, the reading is continued until the number of readings is greater than or equal to the preset number and the detection value of the detection device is still not read. If the detection device is then judged to be abnormal.

[0037] When the detection device is determined to be malfunctioning, a second prompt message is issued.

[0038] Optionally, in any of the above technical solutions, the method further includes:

[0039] Obtain the device model of the photopolymer 3D printing equipment, and obtain the detection threshold corresponding to the device model;

[0040] The detection thresholds include at least one of the following: a first Z-direction upper limit threshold, a first Z-direction lower limit threshold, a second Z-direction upper limit threshold, a second Z-direction lower limit threshold, a first X-direction upper limit threshold, a first X-direction lower limit threshold, and a third Z-direction lower limit threshold.

[0041] Secondly, embodiments of this application provide a photopolymerization 3D printing device, comprising:

[0042] Trough;

[0043] A light source assembly for emitting curing light to cure the material to be cured in the material tank;

[0044] A memory that stores programs or instructions;

[0045] A processor that, when executing the program or instructions, implements the steps of the method as described in the first aspect.

[0046] The device described in the embodiments of this application may also have the following additional technical features:

[0047] Optionally, in the above technical solution, the device further includes:

[0048] Printing platform component, used to hold the print model;

[0049] A cantilever for mounting the printing platform assembly;

[0050] A detection device, wherein the detection device includes at least one of a first detection device and a second detection device;

[0051] The detection device includes a first detection device disposed on the light source assembly for detecting the force on the light source assembly; the detection device also includes a second detection device disposed on the cantilever for detecting the force on the printing platform assembly.

[0052] Optionally, in any of the above technical solutions, the detection device includes a first detection device, which includes a first sub-detection device and a second sub-detection device. The first sub-detection device and the second sub-detection device are respectively disposed on both sides of the light source assembly along the movement direction of the light source assembly.

[0053] The first sub-detection device includes a first strain gauge, and the second sub-detection device includes a second strain gauge. The light source assembly reciprocates between a first end and a second end of a motion track, which is arranged along the first direction. A first strain gauge hole is formed on the light source assembly near the first end of the motion track, and a second strain gauge hole is formed on the light source assembly near the second end of the motion track. The first strain gauge is disposed on the thin wall of the first strain gauge hole, and the second strain gauge is disposed on the thin wall of the second strain gauge hole.

[0054] The light source assembly includes a support, a light source, and a roller. The light source is used to emit light and is disposed inside or on the support. The roller is disposed on the upper side of the support. When the light source assembly reciprocates between the first and second ends of the motion track, the roller is used to lift and tension a portion of the release film at the bottom of the material trough. As the light source assembly moves, the roller can change the area of ​​the release film that is lifted and tensioned.

[0055] Thirdly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect.

[0056] In this embodiment, the force on the light source component during its movement is detected. Thus, in scenarios such as before or during printing, the first detection value representing the force on the light source component can be used to determine whether the photopolymerization 3D printing equipment has malfunctioned. This allows users to take timely countermeasures based on the malfunction and avoid printing failures caused by the malfunction.

[0057] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0058] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0059] Figure 1 One of the structural diagrams of the photopolymerization 3D printing apparatus according to an embodiment of this application is shown;

[0060] Figure 2 A second structural diagram of the photopolymerization 3D printing device according to an embodiment of this application is shown;

[0061] Figure 3 A flowchart illustrating the control method of a photopolymerization 3D printing device according to an embodiment of this application is shown.

[0062] The correspondence between the reference numerals and the component names is as follows:

[0063] 100 Photopolymer 3D Printing Equipment, 101 Material Tank, 102 Display Screen, 103 Support Unit, 104 Release Film, 105 Lifting Assembly, 106 Cantilever, 107 Printing Platform Assembly, 108 First Sub-Detection Device, 109 Second Sub-Detection Device, 110 Second Detection Device, 111 Motion Track, 1111 Guide Groove, 1121 Motor, 1122 Synchronous Belt, 1123 Guide Wheel, 112 Roller. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0065] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0066] The control method, the photopolymer 3D printing device, and the readable storage medium provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0067] This application provides a control method for a photopolymerization 3D printing device, such as... Figure 1 and Figure 2 As shown, the photopolymer 3D printing equipment includes a material tank 101 and a light source assembly. The light source assembly emits curing light to cure the material to be cured in the material tank 101. The light source assembly includes a display screen 102 and a light source, with the light source positioned below the display screen 102. The display screen 102 is located on one side of the material tank 101, which holds the material to be cured. A release film 104 at the bottom of the material tank 101 is attached to the display screen 102. The photopolymer 3D printing equipment also includes a lifting assembly 105, a cantilever 106, and a printing platform assembly 107. The printing platform assembly 107 is connected to the cantilever 106 and is located on the other side of the material tank 101. The lifting assembly 105 can move the printing platform assembly 107 relative to the material tank 101.

[0068] The material to be cured in the material tank 101 is cured between the already formed upper layer model and the release film 104, forming one layer of the printed model, which serves as this layer model. After curing, both sides of this layer model adhere to the release film 104 and the upper layer model simultaneously, and the printing platform assembly 107 moves away from the release film 104, causing the printed model to detach from the release film 104. It should be noted that if this layer model is the first printed layer, the material to be cured in the material tank 101 is cured between the printing platform assembly 107 and the release film 104, and after curing, both sides of this layer model adhere to the release film 104 and the printing platform assembly 107 simultaneously.

[0069] In this embodiment, the light source assembly can move parallel to the model connection surface or the bottom of the material tank 101 at the bottom of the printing platform assembly 107 to achieve segmented printing of the model on the printing platform assembly 107. That is, the printing platform assembly 107 is divided into multiple segments, and the display screen 102 is arranged below the release film 104 to lift the release film 104 and solidify it into a part. After the segment is formed, the light source assembly moves, and the display screen 102 moves to the next segment to continue forming. The part of the release film 104 that is lifted also changes accordingly. The part that was previously lifted is automatically released due to elastic recovery and separation from the printed model.

[0070] In one embodiment, the light source component can move relative to the printing platform component 107 in the X direction to achieve segmented printing in the X direction, or the light source component can move relative to the printing platform component 107 in the Y direction to achieve segmented printing in the Y direction.

[0071] In this embodiment, the segmented printing technology uses a movable screen, segmented printing, and automatic release to reduce release time and improve the photocuring effect.

[0072] like Figure 3 As shown, the control method for the photopolymerization 3D printing equipment provided in this application embodiment includes:

[0073] Step 301: Control the light source assembly to move along the first direction.

[0074] In this step, the light source assembly is controlled to move along a first direction, which is a direction parallel to the model connection surface or the bottom of the material tank of the printing platform assembly, including the X direction and / or the Y direction, and is also the forward direction of the light source assembly.

[0075] Step 302: During the movement of the light source assembly, a first detection value is detected to characterize the force acting on the light source assembly.

[0076] In this step, while controlling the movement of the light source assembly along the first direction, a first detection value is detected to characterize the force on the light source assembly. This first detection value can characterize the force on the light source assembly in the Z direction, parallel to the model connection surface of the printing platform assembly or the bottom of the material tank.

[0077] In one embodiment of this application, the detection of a first detection value characterizing the force on the light source assembly includes:

[0078] During the movement of the light source assembly, a first sub-detection value is detected to characterize the force exerted on the light source assembly along the first direction;

[0079] During the movement of the light source assembly, a second sub-detection value is detected to characterize the force exerted on the light source assembly along the second direction;

[0080] The first detection value is determined based on the first detection sub-value and the second detection sub-value.

[0081] In this embodiment, the photopolymerization 3D printing equipment is equipped with a detection device, which includes a first detection device for detecting the force on the light source assembly and obtaining a first detection value. The first detection value includes a first sub-detection value and a second sub-detection value. Specifically, when the light source assembly moves along a first direction and a second direction, the first sub-detection value and the second sub-detection value of the force on the light source assembly are detected. The first direction is the forward direction of the light source assembly, and the second direction is a direction different from the forward direction. For example, the second direction can be the release direction in which the cured part of the model is released from the release film. Thus, the first sub-detection value in the forward direction can be used to characterize the resistance of the light source assembly in the forward direction, and the second sub-detection value in the release direction can be used to characterize the release force in which the cured part of the model is released from the release film.

[0082] By detecting the above two test values, the relevant faults of the light source component, release film and other photopolymerization 3D printing equipment can be accurately determined based on the resistance and release force experienced by the light source component.

[0083] Step 303: Based on the first detection value, determine whether the photopolymerization 3D printing equipment has malfunctioned.

[0084] In this step, the first detection value is used to determine whether the photopolymer 3D printing equipment has malfunctioned. Malfunctions include, but are not limited to, malfunctions of the light source component, printing platform component, release film, etc. of the photopolymer 3D printing equipment.

[0085] In this embodiment, the force on the light source component during its movement is detected. Thus, in scenarios such as before or during printing, the first detection value representing the force on the light source component can be used to determine whether a malfunction has occurred in the photopolymerization 3D printing equipment. This allows users to take timely countermeasures based on the malfunction and avoid printing failures caused by the malfunction.

[0086] It should be noted that the aforementioned movement of the light source assembly along the first direction can be a preparatory action before printing, that is, a preliminary inspection of the printing platform assembly and the light source assembly before the actual printing, thereby enabling fault detection of the printing platform assembly and the light source assembly before the actual printing process, ensuring the smooth progress of subsequent printing. Alternatively, it can be performed during the actual printing process, thereby enabling fault detection of the printing platform assembly and the light source assembly during the actual printing process, ensuring printing accuracy.

[0087] In one embodiment of this application, the photopolymer 3D printing device further includes a printing platform component for connecting the model, the printing platform component including a model connection surface; the method further includes:

[0088] Control the printing platform assembly to move to a position where the model connection surface is close to the bottom of the material tank, and control the light source assembly to move in a direction parallel to the bottom of the material tank. During the above movement: detect a second detection value to characterize the force on the light source assembly, and / or detect a third detection value to characterize the force on the printing platform assembly.

[0089] Based on one or more of the second detection value and the third detection value, it is determined whether the photopolymerization 3D printing equipment has malfunctioned.

[0090] In this embodiment, the detection device further includes a second detection device, such as... Figure 1 and Figure 2 As shown, the second detection device 110 is mounted on the cantilever 106 and is used to detect the stress on the printing platform components.

[0091] During printing, the printing platform assembly is controlled to descend in the Z direction, bringing its model connection surface close to the bottom of the material tray, while the light source assembly is controlled to move in a direction parallel to the bottom of the material tray. During this movement, a second detection value characterizing the force on the light source assembly and / or a third detection value characterizing the force on the printing platform assembly are detected.

[0092] In this embodiment, by linking a first detection device for detecting the force on the light source assembly and a second detection device for detecting the printing platform assembly, when one or more of the detection devices detect an abnormality, it is possible to determine which specific component the abnormality occurred in, and thus implement corresponding countermeasures based on the component where the abnormality occurred to avoid printing failure.

[0093] In one embodiment of this application, the detection of a second detection value characterizing the force on the light source assembly includes:

[0094] During the movement of the light source assembly, a first sub-detection value is detected to characterize the force exerted on the light source assembly along the first direction;

[0095] During the movement of the light source assembly, a second sub-detection value is detected to characterize the force exerted on the light source assembly along a second direction, where the first direction is different from the second direction;

[0096] The second detection value is determined based on the first detection sub-value and the second detection sub-value.

[0097] In this embodiment, both the second detection value and the first detection value mentioned above are the forces exerted on the light source component during its movement. The difference is that the second detection value is the forces exerted on the light source component during its movement during the printing process, while the first detection value can be the forces exerted on the light source component during its movement during the printing process or the forces exerted on the light source component during the initial inspection process before printing.

[0098] The second detection value includes a first sub-detection value and a second sub-detection value. The first sub-detection value is the force on the light source component along the first direction, which can be used to represent the resistance of the light source component in the forward direction. The second sub-detection value is the force on the light source component along the second direction, which can be used to represent the release force on the light source component in the model release direction.

[0099] In this embodiment of the application, during the printing process, the relevant faults of the photopolymer 3D printing equipment are judged based on the resistance in the forward direction of the light source component and the release force on the light source component in the release direction of the model, so as to avoid printing failure and improve the printing success rate.

[0100] In one embodiment of this application, the first direction is perpendicular to the second direction. The step of detecting a first sub-detection value characterizing the force acting on the light source assembly along the first direction during the movement of the light source assembly, and detecting a second sub-detection value characterizing the force acting on the light source assembly along the second direction during the movement of the light source assembly, includes:

[0101] During the movement of the light source assembly along the first direction, if the first direction is the direction in which the first side of the light source assembly faces, the first sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly.

[0102] If the first direction is the direction facing the second side of the light source assembly, the first sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly; the first side and the second side are opposite to each other.

[0103] In this embodiment, such as Figure 1 and Figure 2 As shown, the first detection device includes a first sub-detection device 108 and a second sub-detection device 109. The first sub-detection device 108 is disposed on a first side of the movement direction of the light source assembly, and the second sub-detection device 109 is disposed on a second side of the movement direction of the light source assembly. The first side and the second side are disposed opposite to each other. For example, as... Figure 2 As shown, the first sub-detection device 108 is located on the left side of the light source assembly, as... Figure 1 As shown, the second sub-detection device 109 is located on the right side of the light source assembly.

[0104] In some embodiments, when the forward direction (i.e., the first direction) of the light source assembly is towards the first side, that is, when the light source assembly moves towards the setting direction of the first sub-detection device 108, the first sub-detection device 108 is in front and the second sub-detection device 108 is behind. The detection value of the first detection unit of the first sub-detection device 108 is a first sub-detection value, representing the resistance in the forward direction of the light source assembly, and the detection value of the second detection unit of the second sub-detection device 109 is a second sub-detection value, representing the release force experienced by the light source assembly in the model release direction.

[0105] When the forward direction of the light source assembly (i.e., the first direction) is towards the second side, that is, when the light source assembly moves towards the setting direction of the second sub-detection device 109, the second sub-detection device 109 is in front and the first sub-detection device 108 is behind. The detection value of the third detection unit of the first sub-detection device 108 is the second sub-detection value, which represents the release force experienced by the light source assembly in the model release direction. The detection value of the fourth detection unit of the second sub-detection device 109 is the second sub-detection value, which represents the resistance in the forward direction of the light source assembly.

[0106] In other embodiments, when the forward direction (i.e., the first direction) of the light source assembly is towards the first side, that is, when the light source assembly moves towards the setting direction of the first sub-detection device 108, the first sub-detection device 108 is in front and the second sub-detection device 108 is behind. The component of the detection value of the first sub-detection device 108 along the first direction is the first sub-detection value, which represents the resistance in the forward direction of the light source assembly. The component of the detection value of the second sub-detection device 109 along the second direction is the second sub-detection value, which represents the release force experienced by the light source assembly in the model release direction.

[0107] When the forward direction of the light source assembly (i.e., the first direction) is towards the second side, that is, when the light source assembly moves towards the setting direction of the second sub-detection device 109, the second sub-detection device 109 is in front and the first sub-detection device 108 is behind. The component of the detection value of the second sub-detection device 109 along the first direction is the first sub-detection value, which represents the resistance in the forward direction of the light source assembly. The component of the detection value of the first sub-detection device 108 along the second direction is the second sub-detection value, which represents the release force experienced by the light source assembly in the model release direction.

[0108] In some specific embodiments, the first direction can be the X direction, and the second direction can be the Z direction, where X can be a direction parallel to the horizontal plane. For example, the Z direction can be a direction perpendicular to the horizontal plane, in which case the X and Z directions are two mutually perpendicular directions. Alternatively, the Z direction can also be a direction forming a preset angle with the horizontal plane, where the preset angle is not zero.

[0109] In this embodiment, the first sub-detection device and the second sub-detection device measure the resistance of the light source component in the forward direction, and the other sub-detection device measure the release force of the light source component in the model release direction. Based on the resistance and release force of the light source component, the relevant faults of the light source component, release film and other photopolymerization 3D printing equipment can be accurately determined.

[0110] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0111] If the third detection value is greater than the upper limit threshold of the first Z direction, or the third detection value is less than the lower limit threshold of the first Z direction, then it is determined that the material tank or the printing platform component of the photopolymerization 3D printing equipment is abnormal.

[0112] In this embodiment, a first upper limit threshold and a first lower limit threshold in the Z direction are pre-acquired, wherein the first upper limit threshold is a positive value and the first lower limit threshold is a negative value. These two thresholds are compared with a third detection value from the second detection device. The comparison result reflects the magnitude of the thrust or tension borne by the cantilever in the Z direction. Specifically, when the third detection value is greater than the first upper limit threshold in the Z direction, it may be due to foreign matter such as residual material to be cured in the material tank, causing the printing platform assembly to be lifted, resulting in the third detection value exceeding the first upper limit threshold in the Z direction. Therefore, the material tank can be determined to be abnormal. When the third detection value is less than the first lower limit threshold in the Z direction, it may be due to excessive downward pressure on the cantilever during printing platform assembly leveling. Therefore, the printing platform leveling can be determined to be abnormal, or the installed printing platform is too heavy, i.e., the installed platform size is incorrect.

[0113] By analyzing the third detection value, accurate determination of abnormalities in the material tank and printing platform can be achieved.

[0114] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0115] If the second sub-detection value is greater than the upper limit threshold of the second Z direction, it is determined that the release film of the photopolymer 3D printing device or the printing platform component is abnormal; if the second sub-detection value is less than the lower limit threshold of the second Z direction, it is determined that the light source component is abnormal.

[0116] In this embodiment, a second upper limit threshold and a second lower limit threshold in the Z direction are pre-obtained, wherein the second upper limit threshold is greater than the second lower limit threshold. These thresholds are used to compare with a first detection value or a second sub-detection value included in the second detection value (i.e., the release force experienced by the light source component in the model release direction). The comparison result reflects the force experienced by the light source component in the Z direction during release. Specifically, if the release force experienced by the light source component in the model release direction is greater than the second upper limit threshold, it indicates that the pressure on the light source component in the Z direction is too high. This may be due to damage to the release film, making it difficult for the model to detach from the release film, resulting in a certain tension on the release film; or the release film may be too taut; or the release force may be increased due to deviations in the lifting of each layer of the printing platform component causing model scraping. Therefore, the release film and printing platform component are deemed abnormal. If the release force experienced by the light source component in the model release direction is less than the second lower limit threshold, it indicates that the light source component itself is abnormal, such as the light source component experiencing operational lag.

[0117] By analyzing the release force experienced by the light source component in the model release direction, accurate determination of anomalies in the release film, printing platform component, and light source component can be achieved.

[0118] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0119] If the third detection value is greater than the upper limit threshold of the first Z direction, and the second sub-detection value is greater than the lower limit threshold of the second Z direction, then it is determined that the exposure time of the light source component and / or the photosensitivity of the printing material in the hopper is abnormal.

[0120] In this embodiment, when the third detection value is greater than the upper threshold of the first Z-direction, it indicates that the cantilever is subjected to a large thrust. When the first detection value or the second sub-detection value included in the second detection value is greater than the lower threshold of the second Z-direction, it indicates that the release force of the light source component in the model release direction is normal. This situation may be due to excessive exposure time or high photosensitivity of the material to be cured in the material tank, resulting in an excessively thick model layer, causing the printing platform component to be lifted, thus causing a large thrust on the cantilever. Therefore, the exposure time and photosensitivity of the material to be cured are judged to be abnormal at this time.

[0121] By analyzing the forces acting on the printing platform components and the release forces acting on the light source components in the model release direction, accurate determination of exposure time and abnormal photosensitivity of the material to be cured can be achieved.

[0122] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0123] If the first sub-detection value is greater than the upper limit threshold in the first X direction, then the release film and / or printing count of the photopolymerization 3D printing equipment are determined to be abnormal.

[0124] In this embodiment, a first upper limit threshold in the X direction is pre-obtained. This threshold is used to compare with a first sub-detection value (i.e., the resistance in the forward direction of the light source component) included in a first detection value or a second detection value. The comparison result reflects the force situation of the light source component when it moves forward in the X direction. Specifically, when the resistance in the forward direction of the light source component is greater than the first upper limit threshold in the X direction, it indicates that the resistance encountered by the light source component when it moves forward is too great. This situation may be due to damage to the release film or excessive printing cycles, which increases the friction between the light source component and the release film, thus increasing the forward resistance of the light source component. Therefore, the release film or the number of printing cycles is determined to be abnormal at this time.

[0125] By analyzing the resistance in the forward direction of the light source assembly, accurate determination of abnormalities in release film and printing count can be achieved.

[0126] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0127] If the first sub-detection value is less than the lower limit threshold in the first X direction, then it is determined that there is a shortage of printing material in the material trough.

[0128] In this embodiment, a first lower limit threshold in the X direction is pre-obtained. This threshold is compared with a first sub-detection value (i.e., the resistance in the forward direction of the light source assembly) included in a first detection value or a second detection value. The comparison result reflects the force situation of the light source assembly when it moves forward in the X direction. The shortage of printing material in the feed trough can be due to either no printing material in the trough or insufficient quantity of printing material. Specifically, when the resistance in the forward direction of the light source assembly is less than the first lower limit threshold in the X direction, it indicates that the resistance in the forward direction of the light source assembly is too low. This situation may be due to a shortage of the material to be cured in the feed trough, i.e., the feed trough is too light, resulting in insufficient resistance in the forward direction of the light source assembly. Therefore, this situation is determined to be an abnormality of insufficient material to be cured in the feed trough.

[0129] By analyzing the resistance in the forward direction of the light source assembly, accurate determination of abnormal situations such as insufficient material in the curing material can be achieved.

[0130] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0131] If the third detection value is less than the lower threshold of the first Z direction, and the second sub-detection value is greater than the lower threshold of the second Z direction and less than the upper threshold of the second Z direction, then the printed model is determined to be abnormal due to film separation.

[0132] In this embodiment, when the third detection value is less than the lower limit threshold of the first Z direction, it indicates that the downward tension on the cantilever is large, while the release force (i.e. the second sub-detection value) of the light source component in the model release direction is between the lower limit threshold of the second Z direction and the upper limit threshold of the second Z direction, which is within the normal range. This indicates that the light source component has not moved in the X direction and has no effect on the force in the Z direction. At this time, it is determined that the printed model has not separated from the film, that is, the abnormal separation of the printed model from the film has occurred.

[0133] By analyzing the forces acting on the printing platform components and the release force acting on the light source components in the model release direction, the system can accurately determine the release condition of the printed model.

[0134] In one embodiment of this application, determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes:

[0135] If the third detection value is greater than the third Z-direction lower threshold, and the second sub-detection value is greater than the second Z-direction lower threshold and less than the second Z-direction upper threshold, then it is determined that the printed model has fallen to the bottom, wherein the third Z-direction lower threshold is greater than the first Z-direction lower threshold.

[0136] In this embodiment, a third lower limit threshold in the Z direction is pre-obtained. This third lower limit threshold is negative and greater than the first lower limit threshold in the Z direction. It is used to compare with a third detection value, and the comparison result reflects the magnitude of the tension on the cantilever in the Z direction. For example, the third lower limit threshold in the Z direction is equal to -(weight of the printing platform component + weight of the printed model). When the third detection value is greater than the third lower limit threshold in the Z direction but less than 0, it indicates that the cantilever has a certain downward tension, but the tension on the cantilever is smaller compared to when the printed model is mounted on the printing platform component. At the same time, the release force on the light source component in the model release direction is between the second lower limit threshold in the Z direction and the second upper limit threshold in the Z direction, which is within the normal range. This indicates that the light source component has not moved in the X direction and has no effect on the force in the Z direction. At this point, it is determined that the printed model has fallen off the printing platform.

[0137] By analyzing the forces acting on the printing platform components and the release forces acting on the light source components in the model release direction, accurate determination of whether the printed model is falling off the bottom can be achieved.

[0138] In one embodiment of this application, the method further includes: issuing a first prompt message when it is determined that the photopolymerization 3D printing equipment has malfunctioned.

[0139] In this embodiment, after a malfunction is detected in the photopolymer 3D printing equipment, a prompt message is promptly issued to remind the user of the malfunction, enabling the user to take corresponding countermeasures in a timely manner and ensure the smooth progress of printing.

[0140] In one embodiment of this application, before controlling the light source assembly to move along the first direction, the method further includes:

[0141] The detection value of the detection device of the photopolymerization 3D printing equipment is read, and the detection device is judged to be abnormal based on the reading of the detection value. If the detection value of the detection device is not read, the reading is continued until the number of readings is greater than or equal to the preset number and the detection value of the detection device is still not read. If the detection device is then judged to be abnormal.

[0142] When the detection device is determined to be malfunctioning, a second prompt message is issued.

[0143] In this embodiment, the detection device is tested to read detection values ​​before formal printing, including testing at least one of the first detection device, the first sub-detection device, and the second sub-detection device. If no detection value is read for any of the devices, the reading continues until the number of readings is greater than or equal to a preset number (e.g., 10 times). If so, the device is determined to be abnormal, thus realizing the detection of abnormal detection devices and issuing a timely reminder to inform the user of the abnormality.

[0144] Furthermore, the detection device is only deemed abnormal after multiple unread values ​​are obtained, thus avoiding misjudgments based on a single reading and improving the reliability of determining abnormal conditions.

[0145] In one embodiment of this application, the method further includes:

[0146] Obtain the device model of the photopolymer 3D printing equipment, and obtain the detection threshold corresponding to the device model;

[0147] The detection thresholds include at least one of the following: a first Z-direction upper limit threshold, a first Z-direction lower limit threshold, a second Z-direction upper limit threshold, a second Z-direction lower limit threshold, a first X-direction upper limit threshold, a first X-direction lower limit threshold, and a third Z-direction lower limit threshold.

[0148] In this embodiment, because the weight, size, and material of the printing platform components, material tank, and light source components, as well as the material to be cured, vary among different models of photopolymer 3D printing equipment, the stress on the cantilever and light source components will differ. Therefore, for different models of photopolymer 3D printing equipment, corresponding detection thresholds need to be obtained to determine the malfunction of the photopolymer 3D printing equipment. In one embodiment, the photopolymer 3D printing equipment is also equipped with an interactive device, such as a touch screen, which can receive and display user input information to achieve user interaction. The aforementioned equipment model can be obtained by querying pre-stored equipment information of the photopolymer 3D printing equipment, or by the user inputting it on the interactive device.

[0149] In this embodiment of the application, by obtaining the detection thresholds corresponding to different models of photopolymer 3D printing equipment, the accuracy of detecting fault conditions of photopolymer 3D printing equipment can be guaranteed.

[0150] This application also provides a photopolymerization 3D printing device, such as... Figure 1 and Figure 2 The device includes:

[0151] Trough 101;

[0152] A light source assembly for emitting curing light to cure the material to be cured in the material tank 101;

[0153] A memory (not shown in the figure) that stores programs or instructions;

[0154] The processor (not shown in the figure) executes the program or instructions to implement the various processes of the above-described control method embodiment for the photopolymerization 3D printing device and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0155] In one embodiment of this application, the device further includes:

[0156] Printing platform component 107 is used to hold the printing model;

[0157] Cantilever 106 is used to mount the printing platform assembly 107;

[0158] The detection device includes at least one of a first detection device and a second detection device 110;

[0159] The detection device includes a first detection device disposed on the light source assembly for detecting the force on the light source assembly; the detection device also includes a second detection device 110 disposed on the cantilever 106 for detecting the force on the printing platform assembly 107.

[0160] In one embodiment of this application, the detection device includes a first detection device, which includes a first sub-detection device 108 and a second sub-detection device 109. The first sub-detection device 108 and the second sub-detection device 109 are respectively disposed on both sides of the light source assembly along the movement direction of the light source assembly.

[0161] The first sub-detection device includes a first strain gauge, and the second sub-detection device includes a second strain gauge. The light source assembly reciprocates between a first end and a second end of a motion track, which is arranged along the first direction. A first strain gauge hole is formed on the light source assembly near the first end of the motion track, and a second strain gauge hole is formed on the light source assembly near the second end of the motion track. The first strain gauge is disposed on the thin wall of the first strain gauge hole, and the second strain gauge is disposed on the thin wall of the second strain gauge hole.

[0162] The light source assembly includes a support, a light source, and a roller. The light source is used to emit light and is disposed inside or on the support. The roller is disposed on the upper side of the support. When the light source assembly reciprocates between the first and second ends of the motion track, the roller is used to lift and tension a portion of the release film at the bottom of the material trough. As the light source assembly moves, the roller can change the area of ​​the release film that is lifted and tensioned.

[0163] In embodiments of this application, the light source assembly includes a display screen 102 and a light source. The light source is used to emit light and is disposed below the display screen 102. The display screen 102 is located on one side of the material tank 101, which is used to hold the material to be cured. The release film 104 at the bottom of the material tank 101 is attached to the display screen 102. The photopolymerization 3D printing equipment also includes a lifting assembly 105, a cantilever 106, and a printing platform assembly 107. The printing platform assembly 107 is connected to the cantilever 106 and is located on the other side of the material tank 101. The lifting assembly 105 can drive the printing platform assembly 107 to move relative to the material tank 101.

[0164] The material to be cured in the material tank 101 is cured between the already formed upper layer model and the release film 104, forming one layer of the printed model, which serves as this layer model. After curing, both sides of this layer model adhere to the release film 104 and the upper layer model simultaneously, and the printing platform assembly 107 moves away from the release film 104, causing the printed model to detach from the release film 104. It should be noted that if this layer model is the first printed layer, the material to be cured in the material tank 101 is cured between the printing platform assembly 107 and the release film 104, and after curing, both sides of this layer model adhere to the release film 104 and the printing platform assembly 107 simultaneously.

[0165] In this embodiment, the light source assembly can move parallel to the model connection surface or the bottom of the material tank 101 at the bottom of the printing platform assembly 107 to achieve segmented printing of the model on the printing platform assembly 107. That is, the printing platform assembly 107 is divided into multiple segments, and the display screen 102 is arranged below the release film 104 to lift the release film 104 and solidify it into a part. After the segment is formed, the light source assembly moves, and the display screen 102 moves to the next segment to continue forming. The part of the release film 104 that is lifted also changes accordingly. The part that was previously lifted is automatically released due to elastic recovery and separation from the printed model.

[0166] In one embodiment, the light source component can move relative to the printing platform component 107 in the X direction to achieve segmented printing in the X direction, or the light source component can move relative to the printing platform component 107 in the Y direction to achieve segmented printing in the Y direction.

[0167] In this embodiment, the segmented printing technology uses a movable screen, segmented printing, and automatic release to reduce release time and improve the photocuring effect.

[0168] During the control of the light source assembly to move along the first direction, a first detection value is detected to characterize the force on the light source assembly. This first detection value characterizes the force on the light source assembly in the Z direction, parallel to the model connection surface of the printing platform assembly or the bottom of the material tank. Based on the first detection value, a judgment is made as to whether the photopolymer 3D printing equipment has malfunctioned. Malfunctions include, but are not limited to, malfunctions of the light source assembly, printing platform assembly, release film, etc. of the photopolymer 3D printing equipment.

[0169] In this embodiment, the fault condition of the photopolymer 3D printing equipment is analyzed before or during printing by analyzing the force situation of the light source component during its movement, determining the specific component that is malfunctioning, and then implementing countermeasures based on the specific component that is malfunctioning to avoid printing failure caused by the fault condition.

[0170] In one embodiment of this application, a second monitoring device 110 is used to detect a third detection value for characterizing the force on the printing platform component. Based on the linkage between the first detection device for detecting the force on the light source component and the second detection device 110 for detecting the printing platform component, when one or more of the detection devices detect an abnormality, it is possible to determine which specific component the abnormality occurs in, and thus implement corresponding countermeasures based on the component where the abnormality occurred to avoid printing failure.

[0171] Specifically, the first detection value and / or the second detection value includes a first sub-detection value and a second sub-detection value. The first sub-detection value represents the resistance in the forward direction of the light source component, and the second sub-detection value represents the release force on the light source component in the model release direction. Fault detection of the photopolymerization 3D printing equipment is achieved through one or more of the first sub-detection value, the second sub-detection value, and the third detection value.

[0172] like Figure 1 and Figure 2 As shown, the first detection device includes a first sub-detection device 108 and a second sub-detection device 109. The first sub-detection device 108 is disposed on a first side of the movement direction of the light source assembly, and the second sub-detection device 109 is disposed on a second side of the movement direction of the light source assembly. The first side and the second side are disposed opposite to each other. For example, as... Figure 2 As shown, the first sub-detection device 108 is located on the left side of the light source assembly, as... Figure 1 As shown, the second sub-detection device 109 is located on the right side of the light source assembly.

[0173] When the forward direction of the light source assembly (i.e., the first direction) is towards the first side, that is, when the light source assembly moves towards the setting direction of the first sub-detection device 108, the first sub-detection device 108 is in front and the second sub-detection device 108 is behind. The detection value of the first sub-detection device 108 is the first sub-detection value, which represents the resistance in the forward direction of the light source assembly. The detection value of the second sub-detection device 109 is the second sub-detection value, which represents the release force experienced by the light source assembly in the model release direction.

[0174] When the forward direction of the light source assembly (i.e., the first direction) is towards the second side, that is, when the light source assembly moves towards the setting direction of the second sub-detection device 109, the second sub-detection device 109 is in front and the first sub-detection device 108 is behind. The detection value of the second sub-detection device 109 is the first sub-detection value, that is, the resistance in the forward direction of the light source assembly. The detection value of the first sub-detection device 108 is the second sub-detection value, that is, the release force on the light source assembly in the model release direction.

[0175] In one embodiment, the first sub-detection device 108 includes a first strain gauge, the second sub-detection device 109 includes a second strain gauge, and the light source assembly reciprocates between the first and second ends of the motion track 111, such as... Figure 1 and Figure 2 As shown, the motion track 111 is arranged along the first direction, and the motion track 111 includes a guide groove 1111. A first strain gauge is formed on the light source assembly near the first end of the motion track 111, that is, on the first side of the light source assembly. A second strain gauge is formed on the light source assembly near the second end of the motion track 111, that is, on the second side of the light source assembly. The first strain gauge is disposed on the thin wall of the first strain gauge; the second strain gauge is disposed on the thin wall of the second strain gauge.

[0176] In one embodiment of this application, such as Figure 1 As shown, the photopolymerization 3D printing equipment also includes a motion component 111, which is used to drive the light source component to move in a first direction. Figure 2 As shown, the motion assembly 111 includes a motor 1121, a synchronous belt 1122, and a guide wheel 1123. The motor 1121 drives the synchronous belt 1122, and the guide wheel 1123 and the guide groove 1111 cooperate to achieve guidance.

[0177] In one embodiment of this application, the light source assembly further includes a support portion 103 and a roller 112. The light source is disposed within or on the support portion 103, and the roller 112 is disposed on the upper side of the support portion 103, for example, at two apex corners of the upper part of the support portion 103, to assist the movement of the light source assembly. When the light source assembly reciprocates between the first and second ends of the motion track 111, the roller 112 is used to lift and tension a portion of the release film 104 at the bottom of the material trough, and as the light source assembly moves, the roller 112 can change the area of ​​the release film 104 that is lifted and tensioned.

[0178] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described printing control method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0179] This application also provides the following embodiments:

[0180] Reference numeral 1, this application provides a control method for a photopolymerization 3D printing device. The photopolymerization 3D printing device includes a material tank and a light source assembly. The light source assembly is used to emit curing light to cure the material to be cured in the material tank. The method includes:

[0181] Control the light source assembly to move along the first direction;

[0182] During the movement of the light source assembly, a first detection value is detected to characterize the force acting on the light source assembly;

[0183] Based on the first detection value, determine whether the photopolymer 3D printing equipment has malfunctioned.

[0184] Reference numeral 2, based on reference numeral 1, further includes a printing platform assembly for connecting models in the photopolymer 3D printing equipment. The printing platform assembly includes a model connection surface. The method also includes:

[0185] Control the printing platform assembly to move to a position where the model connection surface is close to the bottom of the material tank, and control the light source assembly to move in a direction parallel to the bottom of the material tank. During the above movement: detect a second detection value to characterize the force on the light source assembly, and / or detect a third detection value to characterize the force on the printing platform assembly.

[0186] Based on one or more of the second and third detection values, determine whether the photopolymer 3D printing equipment has malfunctioned.

[0187] Reference numeral 3, based on reference numeral 2 or any of the above embodiments, detects a first or second detection value used to characterize the force on the light source assembly, including:

[0188] During the movement of the light source assembly, a first sub-detection value is detected to characterize the force exerted on the light source assembly along the first direction;

[0189] During the movement of the light source assembly, a second sub-detection value is detected to characterize the force exerted on the light source assembly along a second direction, where the first direction is different from the second direction;

[0190] The first detection value or the second detection value is determined based on the first detection sub-value and the second detection sub-value.

[0191] Reference numeral 4, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0192] If the third detection value is greater than the upper limit threshold of the first Z direction, or the third detection value is less than the lower limit threshold of the first Z direction, then it is determined that the material tank or printing platform component of the photopolymerization 3D printing equipment is abnormal.

[0193] Reference numeral 5, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0194] If the second sub-detection value is greater than the upper limit threshold of the second Z direction, it is determined that the release film or printing platform component of the photopolymer 3D printing equipment is abnormal; if the second sub-detection value is less than the lower limit threshold of the second Z direction, it is determined that the light source component is abnormal.

[0195] Reference numeral 6, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0196] If the third detection value is greater than the upper limit threshold of the first Z direction and the second sub-detection value is greater than the lower limit threshold of the second Z direction, then it is determined that the exposure time of the light source component and / or the photosensitivity of the printing material in the sump is abnormal.

[0197] Reference numeral 7, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0198] If the first sub-detection value is greater than the upper limit threshold in the first X direction, then the release film and / or printing count of the photopolymer 3D printing equipment are determined to be abnormal.

[0199] Reference numeral 8, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0200] If the first sub-detection value is less than the lower limit threshold in the first X direction, it is determined that there is a shortage of printing material in the material trough.

[0201] Reference numeral 9, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0202] If the third detection value is less than the lower threshold of the first Z direction, and the second sub-detection value is greater than the lower threshold of the second Z direction and less than the upper threshold of the second Z direction, then the printed model is determined to be abnormal due to film separation.

[0203] Reference numeral 10, based on reference numeral 3 or any of the above embodiments, determines whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, second detection value, and third detection value, including:

[0204] If the third detection value is greater than the third Z-direction lower limit threshold, and the second sub-detection value is greater than the second Z-direction lower limit threshold and less than the second Z-direction upper limit threshold, then it is determined that the printed model has fallen to the bottom. The third Z-direction lower limit threshold is greater than the first Z-direction lower limit threshold.

[0205] Reference numeral 11, based on reference numeral 3 or any of the above embodiments, wherein the first direction is perpendicular to the second direction, and during the movement of the light source assembly, a first sub-detection value characterizing the force on the light source assembly along the first direction is detected; and during the movement of the light source assembly, a second sub-detection value characterizing the force on the light source assembly along the second direction is detected, including:

[0206] During the movement of the light source assembly along the first direction, if the first direction is the direction in which the first side of the light source assembly faces, a first sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly, and a second sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly.

[0207] If the first direction is the direction facing the second side of the light source assembly, a first sub-detection value is determined based on the detection value detected by the second sub-detection device located on the second side of the light source assembly, and a second sub-detection value is determined based on the detection value detected by the first sub-detection device located on the first side of the light source assembly; the first side and the second side are opposite to each other.

[0208] Reference numeral 12, based on reference numeral 1 or any of the above embodiments, the method further includes:

[0209] When a malfunction is detected in the photopolymer 3D printing equipment, an initial warning message is issued.

[0210] Reference numeral 13, based on reference numeral 1 or any of the above embodiments, further includes, before controlling the light source assembly to move along the first direction:

[0211] Read the detection value of the detection device of the photopolymer 3D printing equipment. Based on the reading of the detection value, determine whether the detection device is abnormal. If no detection value is read, continue reading until the number of readings is greater than or equal to the preset number and no detection value is read. If the detection device is still not read, it is determined that the detection device is abnormal.

[0212] When the detection device is determined to be malfunctioning, a second prompt message is issued.

[0213] Reference numeral 14, based on reference numeral 1 or any of the above embodiments, the method further includes:

[0214] Obtain the device model of the photopolymer 3D printing equipment and the detection threshold corresponding to the device model;

[0215] The detection thresholds include at least one of the following: a first Z-direction upper limit threshold, a first Z-direction lower limit threshold, a second Z-direction upper limit threshold, a second Z-direction lower limit threshold, a first X-direction upper limit threshold, a first X-direction lower limit threshold, and a third Z-direction lower limit threshold.

[0216] Reference numeral 15, an embodiment of this application provides a photopolymerization 3D printing device, comprising:

[0217] Trough;

[0218] The light source assembly is used to emit curing light to cure the material to be cured in the material tank;

[0219] Memory, which stores programs or instructions;

[0220] A processor, the steps of a control method for a photopolymer 3D printing apparatus as described in any of the numbers 1 to 14, when the processor executes a program or instructions.

[0221] Based on number 15, the equipment also includes:

[0222] Printing platform component, used to hold the print model;

[0223] Cantilever, used for mounting the print platform assembly;

[0224] A detection device, comprising at least one of a first detection device and a second detection device;

[0225] The detection device includes a first detection device disposed on the light source assembly for detecting the force on the light source assembly; and a second detection device disposed on the cantilever for detecting the force on the printing platform assembly.

[0226] Reference numeral 17, based on reference numeral 16 or any of the above embodiments, the detection device includes a first detection device, the first detection device includes a first sub-detection device and a second sub-detection device, the first sub-detection device and the second sub-detection device are respectively disposed on both sides of the light source assembly along the movement direction of the light source assembly;

[0227] The first sub-detection device includes a first strain gauge, and the second sub-detection device includes a second strain gauge. The light source assembly reciprocates between a first end and a second end of a motion track, which is arranged along the first direction. A first strain gauge hole is formed on the light source assembly near the first end of the motion track, and a second strain gauge hole is formed on the light source assembly near the second end of the motion track. The first strain gauge is disposed on the thin wall of the first strain gauge hole, and the second strain gauge is disposed on the thin wall of the second strain gauge hole.

[0228] The light source assembly includes a support, a light source, and a roller. The light source is used to emit light and is disposed inside or on the support. The roller is disposed on the upper side of the support. When the light source assembly reciprocates between the first and second ends of the motion track, the roller is used to lift and tension a portion of the release film at the bottom of the material trough. As the light source assembly moves, the roller can change the area of ​​the release film that is lifted and tensioned.

[0229] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A control method for a photopolymerization 3D printing device, characterized in that, The photopolymerization 3D printing equipment includes a material tank and a light source assembly, the light source assembly being used to emit curing light to cure the material to be cured in the material tank, the method comprising: Control the light source assembly to move along the first direction; During the movement of the light source assembly, a first detection value is detected to characterize the force acting on the light source assembly. Based on the first detection value, it is determined whether the photopolymerization 3D printing equipment has malfunctioned.

2. The method according to claim 1, characterized in that, The photopolymer 3D printing equipment further includes a printing platform component for connecting the model, the printing platform component including a model connection surface; the method further includes: Control the printing platform assembly to move to a position where the model connection surface is close to the bottom of the material tank, and control the light source assembly to move in a direction parallel to the bottom of the material tank. During the above movement: detect a second detection value to characterize the force on the light source assembly, and / or detect a third detection value to characterize the force on the printing platform assembly. Based on one or more of the second detection value and the third detection value, it is determined whether the photopolymerization 3D printing equipment has malfunctioned.

3. The method according to claim 2, characterized in that, The detection, used to characterize the force exerted on the light source assembly, includes a first detection value and / or a second detection value, comprising: During the movement of the light source assembly, a first sub-detection value is detected to characterize the force acting on the light source assembly along a first direction; and During the movement of the light source assembly, a second sub-detection value is detected to characterize the force exerted on the light source assembly along a second direction, where the first direction is different from the second direction; The first detection value and / or the second detection value are determined based on the first detection sub-value and the second detection sub-value.

4. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the third detection value is greater than the upper limit threshold of the first Z direction, or the third detection value is less than the lower limit threshold of the first Z direction, then it is determined that the material tank or the printing platform component of the photopolymerization 3D printing equipment is abnormal.

5. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the second sub-detection value is greater than the upper limit threshold of the second Z direction, it is determined that the release film of the photopolymer 3D printing device or the printing platform component is abnormal; if the second sub-detection value is less than the lower limit threshold of the second Z direction, it is determined that the light source component is abnormal.

6. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the third detection value is greater than the upper limit threshold of the first Z direction, and the second sub-detection value is greater than the lower limit threshold of the second Z direction, then it is determined that the exposure time of the light source component and / or the photosensitivity of the printing material in the hopper is abnormal.

7. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the first sub-detection value is greater than the upper limit threshold in the first X direction, then the release film and / or printing count of the photopolymerization 3D printing equipment are determined to be abnormal.

8. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the first sub-detection value is less than the lower limit threshold in the first X direction, then it is determined that there is a shortage of printing material in the material trough.

9. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the third detection value is less than the lower threshold of the first Z direction, and the second sub-detection value is greater than the lower threshold of the second Z direction and less than the upper threshold of the second Z direction, then the printed model is determined to be abnormal due to film separation.

10. The method according to claim 3, characterized in that, Determining whether the photopolymerization 3D printing equipment has malfunctioned based on one or more of the first detection value, the second detection value, and the third detection value includes: If the third detection value is greater than the third Z-direction lower threshold, and the second sub-detection value is greater than the second Z-direction lower threshold and less than the second Z-direction upper threshold, then it is determined that the printed model has fallen to the bottom, wherein the third Z-direction lower threshold is greater than the first Z-direction lower threshold.

11. The method according to claim 3, characterized in that, The first direction is perpendicular to the second direction, and during the movement of the light source assembly, a first sub-detection value is detected to characterize the force exerted on the light source assembly along the first direction; And during the movement of the light source assembly, detecting a second sub-detection value characterizing the force acting on the light source assembly along the second direction, including: During the movement of the light source assembly along the first direction, if the first direction is the direction in which the first side of the light source assembly faces, the first sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly. If the first direction is the direction facing the second side of the light source assembly, the first sub-detection value is determined based on the detection value detected by the second sub-detection device disposed on the second side of the light source assembly, and the second sub-detection value is determined based on the detection value detected by the first sub-detection device disposed on the first side of the light source assembly; the first side and the second side are opposite to each other.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: When it is determined that the photopolymer 3D printing equipment has malfunctioned, a first warning message is issued.

13. The method according to any one of claims 1 to 11, characterized in that, Prior to controlling the movement of the light source assembly along the first direction, the method further includes: The detection value of the detection device of the photopolymerization 3D printing equipment is read, and the detection device is judged to be abnormal based on the reading of the detection value. If the detection value of the detection device is not read, the reading is continued until the number of readings is greater than or equal to the preset number and the detection value of the detection device is still not read. If the detection device is then judged to be abnormal. When the detection device is determined to be malfunctioning, a second prompt message is issued.

14. The method according to any one of claims 1 to 11, characterized in that, The method further includes: Obtain the device model of the photopolymer 3D printing equipment, and obtain the detection threshold corresponding to the device model; The detection thresholds include at least one of the following: a first Z-direction upper limit threshold, a first Z-direction lower limit threshold, a second Z-direction upper limit threshold, a second Z-direction lower limit threshold, a first X-direction upper limit threshold, a first X-direction lower limit threshold, and a third Z-direction lower limit threshold.

15. A photopolymerization 3D printing device, characterized in that, include: Trough; A light source assembly for emitting curing light to cure the material to be cured in the material tank; A memory that stores programs or instructions; A processor that, when executing the program or instructions, implements the steps of the control method for a photopolymer 3D printing apparatus as described in any one of claims 1 to 14.

16. The device according to claim 15, characterized in that, The device also includes: Printing platform component, used to hold the print model; A cantilever for mounting the printing platform assembly; A detection device, wherein the detection device includes at least one of a first detection device and a second detection device; The detection device includes a first detection device disposed on the light source assembly for detecting the force on the light source assembly; the detection device also includes a second detection device disposed on the cantilever for detecting the force on the printing platform assembly.

17. The device according to claim 16, characterized in that, The detection device includes a first detection device, which includes a first sub-detection device and a second sub-detection device. The first sub-detection device and the second sub-detection device are respectively disposed on both sides of the light source assembly along the movement direction of the light source assembly. The first sub-detection device includes a first strain gauge, and the second sub-detection device includes a second strain gauge. The light source assembly reciprocates between a first end and a second end of a motion track, which is arranged along the first direction. A first strain gauge hole is formed on the light source assembly near the first end of the motion track, and a second strain gauge hole is formed on the light source assembly near the second end of the motion track. The first strain gauge is disposed on the thin wall of the first strain gauge hole, and the second strain gauge is disposed on the thin wall of the second strain gauge hole. The light source assembly includes a support, a light source, and a roller. The light source is used to emit light and is disposed inside or on the support. The roller is disposed on the upper side of the support. When the light source assembly reciprocates between the first and second ends of the motion track, the roller is used to lift and tension a portion of the release film at the bottom of the material trough. As the light source assembly moves, the roller can change the area of ​​the release film that is lifted and tensioned.

18. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps of the control method for the photopolymer 3D printing device as described in any one of claims 1 to 14.

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