A control method of a 3D printing device, a 3D printing device and a readable storage medium

Abstract

The application provides a control method of a 3D printing device, a 3D printing device and a readable storage medium, and relates to the field of 3D printing. The 3D printing device comprises a cantilever, a detection device and a printing platform. The printing platform is detachably installed on the cantilever, and the detection device is arranged on the cantilever and used for detecting the printing platform. The control method of the 3D printing device comprises the following steps: controlling the cantilever to move to perform a preset detection operation, and determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation; and when it is determined that the first end of the cantilever is installed with the printing platform, the zero point detection value of the detection device is calibrated. According to the application, after the printing platform is determined to be placed, the detection value of the detection device is automatically zero point compensated or zero point calibrated, so that the zero point drift problem of the detection device does not affect subsequent printing, and the accuracy of printing control based on the detection value of the detection device is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 3D printing, and in particular to a control method of a 3D printing device, a 3D printing device and a readable storage medium. BACKGROUND

[0002] A tension sensor is installed on the cantilever of the 3D printing device to detect the force conditions such as release force and pressing force in the printing process to guide the printing. Due to the temperature drift and time drift, the zero point of the tension sensor will drift, which will cause the tension of the cantilever to drift when only the printing platform is placed on the cantilever, and further cause the detected release force and pressing force to be inaccurate in subsequent printing, thereby affecting the printing. SUMMARY

[0003] Therefore, the present application provides a control method of a 3D printing device, a 3D printing device and a readable storage medium, which removes the zero point drift of the detection device and avoids the problem of zero point drift of the detection device affecting subsequent printing.

[0004] In a first aspect, an embodiment of the present application provides a control method of a 3D printing device, the 3D printing device comprising a cantilever, a detection device and a printing platform, the printing platform being detachably installed at a first end of the cantilever, the detection device being arranged on the cantilever, the detection device being used to detect the printing platform, and the method comprising:

[0005] controlling the cantilever to move to perform a preset detection operation, and determining whether the printing platform is installed at the first end of the cantilever according to a result of the preset detection operation;

[0006] when it is determined that the printing platform is installed at the first end of the cantilever, calibrating a zero point detection value of the detection device.

[0007] In a second aspect, an embodiment of the present application provides a 3D printing device, comprising:

[0008] a cantilever;

[0009] a printing platform, the printing platform being detachably installed at a first end of the cantilever;

[0010] a detection device, the detection device being arranged on the cantilever, the detection device being used to detect the printing platform;

[0011] a memory, the memory storing a program or instructions;

[0012] a processor, the processor implementing the steps of the method of the first aspect when executing the program or instructions.

[0013] In a third aspect, the embodiments of the present application provide a readable storage medium, which stores programs or instructions, and the programs or instructions are executed by a processor to implement the steps of the method in the first aspect.

[0014] In the embodiments of the present application, the cantilever is controlled to move to perform a preset detection operation, a result of the preset detection operation is obtained, and it is determined whether the first end of the cantilever is installed with a printing platform according to the result of the preset detection operation. When it is determined that the first end of the cantilever is installed with the printing platform, the detection value of the detection device in a stationary state of the printing platform is calibrated, that is, the detection value of the detection device in the stationary state of the printing platform is set to 0 g, and the zero drift of the detection device is removed.

[0015] In the embodiments of the present application, after the printing platform is determined to be placed, the detection value of the detection device is automatically zero-compensated or zero-calibrated to remove the zero drift of the detection device, and the problem of the zero drift of the detection device is avoided to affect subsequent printing, and the accuracy of printing control based on the detection value of the detection device is ensured.

[0016] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Fig. 1 shows a flowchart of a control method of a 3D printing device according to an embodiment of the present application;

[0019] Figure 2 Fig. 2 shows a flowchart of a control method of a 3D printing device according to another embodiment of the present application;

[0020] Figure 3 Fig. 3 shows a curve change diagram between a model layer release force and a printing area according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship.

[0023] The 3D printing device control method, 3D printing device and readable storage medium provided by the embodiments of the present application will be described in detail below in conjunction with the drawings, specific embodiments and application scenarios.

[0024] The embodiments of the present application provide a 3D printing device control method, a 3D printing device includes a cantilever, a detection device and a printing platform, the printing platform is detachably installed at the first end of the cantilever, the detection device is arranged on the cantilever, and the detection device is used to detect the printing platform, as shown in the figure, the method comprises: Figure 1

[0025] Step 101, control the cantilever to move to perform a preset detection operation, and determine whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation;

[0026] Step 102, when it is determined that the first end of the cantilever is installed with the printing platform, calibrate the zero point detection value of the detection device.

[0027] In this embodiment, the cantilever is controlled to move to perform a preset detection operation, and the result of the preset detection operation is obtained, and whether the first end of the cantilever is installed with the printing platform is determined according to the result of the preset detection operation. When it is determined that the first end of the cantilever is installed with the printing platform, the detection value of the detection device in the stationary state of the printing platform (i.e. the zero point detection value) is calibrated, that is, the detection value of the detection device in the stationary state of the printing platform is set to 0 grams, and the zero point drift of the detection device is removed.

[0028] In one embodiment, when it is determined that the first end of the cantilever is not installed with the printing platform, a pop-up window or an alarm is performed to prompt the user that the printing platform is not installed.

[0029] ​In one embodiment, the detection device is arranged on the cantilever of the 3D printing device, for example, the detection device is arranged on the second end opposite to the first end of the cantilever, and the detection device is used to detect the stress condition of the printing platform. The detection device can be a force detection device, a deformation detection device, etc., and can be an elastic resistance strain gauge, a tension sensor, etc., which can detect the deformation amount at a specific position of a specific component and other physical quantities that can represent the stress change, such as tension, gravity, pressure, and torque. When the detection device is arranged on the cantilever of the 3D printing device, after the printing platform is mounted on the cantilever, the printing platform will pull the cantilever, causing the cantilever to slightly deform. By measuring the deformation of the cantilever, the weight of the printing platform can be obtained. During the lifting of the printing platform, the model gravity and the tension of the release film (i.e., the release force) acting on the printing platform will also indirectly affect the deformation of the cantilever. Therefore, the stress condition of the printing platform can be obtained through the detection device.

[0030] In the embodiments of the present application, after the printing platform is placed, the detection value of the detection device is automatically zero-compensated or zero-calibrated to remove the zero drift of the detection device and avoid the influence of the zero drift of the detection device on subsequent printing, thereby ensuring the accuracy of the printing control based on the detection value of the detection device.

[0031] In one embodiment of the present application, before the zero detection value of the detection device is calibrated, the method further comprises:

[0032] In response to a printing instruction, a first detection value of the detection device when the cantilever is at a current first position is obtained;

[0033] The cantilever is controlled to be lifted to a second position, and a second detection value of the detection device is obtained, the second position being higher than the resin liquid level position of the trough of the 3D printing device;

[0034] When the difference between the second detection value and the first detection value is greater than or equal to a first threshold value, the second detection value is taken as the zero detection value to be calibrated of the detection device;

[0035] When the difference between the second detection value and the first detection value is less than the first threshold value, the first detection value is taken as the zero detection value to be calibrated of the detection device;

[0036] Alternatively, before the detection value of the detection device is calibrated, the method further comprises:

[0037] The cantilever is controlled to be lifted to a third position, and a third detection value of the detection device is obtained, the third position being higher than the resin liquid level position of the trough of the 3D printing device;

[0038] The third detection value is taken as the zero detection value to be calibrated of the detection device.

[0039] Since the first time printing, if the printing platform is immersed in the resin, the zero point detection value of the detection device read is affected by the resin buoyancy and gravity. In order to solve this problem, when obtaining the zero point detection value of the detection device, the detection value of the first end of the cantilever above the resin liquid level of the vat of the 3D printing equipment is obtained.

[0040] In the first embodiment, in response to the printing instruction, the first detection value of the detection device when obtaining the current position (i.e. the first position) is obtained. The cantilever is controlled to be lifted to the second position, so that the first end of the cantilever is lifted above the resin liquid level of the vat of the 3D printing equipment, i.e. the first end of the cantilever reaches the second position, and the second detection value of the detection device at this time is obtained.

[0041] The second detection value is compared with the first detection value to obtain the difference between the second detection value and the first detection value. If the difference is greater than or equal to the first threshold value, since the second detection value is the detection value when the first end of the cantilever is lifted above the resin liquid level of the vat of the 3D printing equipment, and the second detection value is greatly different from the first detection value, which indicates that the first detection value is the detection value when the first end of the cantilever is below the resin liquid level of the vat of the 3D printing equipment, that is, when the printing platform is immersed in the resin at the beginning of printing. In this case, the second detection value when the first end of the cantilever is lifted above the resin liquid level of the vat of the 3D printing equipment is taken as the zero point detection value of the detection device.

[0042] If the difference is less than the first threshold value, the second detection value is less different from the first detection value, which indicates that the first detection value is also the detection value when the first end of the cantilever is above the resin liquid level of the vat of the 3D printing equipment, so the first detection value is taken as the zero point detection value of the detection device.

[0043] In the second embodiment, in response to the printing instruction, the cantilever is controlled to be lifted to the third position, so that the first end of the cantilever is lifted above the resin liquid level of the vat of the 3D printing equipment, i.e. the first end of the cantilever reaches the third position, and the third detection value of the detection device at this time is obtained. Since it has been determined that the third detection value is the detection value when the first end of the cantilever is above the resin liquid level of the vat of the 3D printing equipment, i.e. the detection value when the printing platform is not immersed in the resin, the third detection value is taken as the zero point detection value of the detection device.

[0044] It should be noted that in the second embodiment described above, the detection value of the detection device in the state of being lifted out of the resin is directly taken as the zero point detection value of the detection device, without the comparison of the two detection values in the first embodiment, so that time can be saved and control efficiency can be improved. However, since the first end of the cantilever will carry some resin after being lifted out of the resin, the detection values in the two cases of with and without resin will be slightly different. Ideally, the zero point detection value should be the detection value without resin. Therefore, the zero point detection value determined in the second embodiment may have a slight error. In the first embodiment, the first detection value is taken as the zero point detection value, so that the accuracy of the determination of the zero point detection value is improved.

[0045] Since when printing is started, if the printing platform is immersed in the resin, the detection value of the detection device read will be affected by the resin buoyancy and gravity. By the above method of the present application, the detection value when not immersed in the resin is taken as the zero point detection value of the detection device, and the zero point detection value of the printing platform which is stationary and not affected by the resin buoyancy is calibrated each time the printing is started after confirming that the printing platform is installed, so that the zero point drift problem of the detection device is removed, and the accuracy of each detection function performed subsequently is ensured.

[0046] In an embodiment of the present application, the control of the lifting of the cantilever to the second position or the third position comprises: after the control of the movement of the cantilever for the foreign matter detection operation, the control of the lifting of the cantilever to the second position or the third position.

[0047] In this embodiment, foreign matter detection needs to be performed before printing starts to avoid the existence of foreign matter at the bottom of the tank, the bottom of the mounting plate or the bottom of the printing platform to affect printing. After the foreign matter detection is performed, the cantilever will be lifted and will be lifted above the resin liquid level of the tank, so that the reading of the second detection value or the third detection value can be performed after the foreign matter detection operation. Without separately performing the operation of lifting the cantilever out of the resin of the tank again, time can be saved and control efficiency can be improved.

[0048] In an embodiment of the present application, after the first detection value of the detection device when the cantilever is in the current first position is acquired in response to the printing instruction, the method further comprises:

[0049] If it is determined according to the target information that the weight of the printing platform is greater than or equal to the second threshold value, it is determined whether the first detection value is less than or equal to the third threshold value, wherein the target information includes any one of the device model, the platform model and the platform weight of the 3D printing device;

[0050] If the first detection value is less than or equal to the third threshold value, a prompt information that the printing platform is not installed is issued;

[0051] If the first detection value is greater than the third threshold value, it is determined that the first end of the cantilever is installed with the printing platform, and the step of controlling the cantilever to lift to the second position is entered.

[0052] In this embodiment, after the first detection value of the detection device is detected when the cantilever is in the current first position, a preliminary judgment can be made on whether the first end of the cantilever is installed with the printing platform based on the first detection value.

[0053] Since the greater the weight of the printing platform corresponding to the 3D printing device, the less the zero point drift problem of the detection device affects the platform placement detection, and the smaller the weight of the printing platform, the greater the zero point drift problem of the detection device affects the platform placement detection. When any one of the device model of the 3D printing device, the platform model, and the platform weight is determined to be greater than or equal to the second threshold value, it indicates that the printing platform is heavy.

[0054] When it is determined that the printing platform is light, the first end of the cantilever can not be preliminarily judged whether it is installed with the printing platform according to the first detection value at the start of printing. When it is determined that the printing platform is heavy, the first end of the cantilever can be preliminarily judged whether it is installed with the printing platform according to the first detection value at the start of printing. If the first detection value is less than or equal to the third threshold value, it is determined that the printing platform is not installed, and a pop-up window or an alarm is performed to prompt the user that the printing platform is not installed, wherein the third threshold value ranges from -450g to -650g, and -550g can be selected. When the first detection value is greater than the third threshold value, it is preliminarily determined that the printing platform is installed, and then the subsequent printing process is continued, that is, the cantilever is controlled to lift to the second position to read the second detection value, and the determination of the zero point detection value of the detection device is performed.

[0055] After the zero point detection value of the detection device is determined, the cantilever is controlled to move to perform a preset detection operation, and whether the first end of the cantilever is installed with the printing platform is further determined according to the result of the preset detection operation.

[0056] The present application can preliminarily judge whether the first end of the cantilever is installed with the printing platform according to the first detection value at the start of printing, timely prompt when it is determined that it is not installed, and continue the subsequent judgment when it is determined that it is installed, thereby further ensuring the accuracy of the platform installation detection.

[0057] In an embodiment of the present application, the method further comprises: in response to the user's ignoring instruction to the prompt information, the step of controlling the cantilever to lift to the second position is entered.

[0058] In this embodiment, when it is determined that the printing platform is not installed, a pop-up or alarm prompt is performed to prompt the user that the printing platform is not installed. If the user determines that the prompt is a false alarm, an ignore instruction for the prompt information is issued, and in response to the ignore instruction, a step of controlling the cantilever to be lifted to the second position is entered, a second detection value is read, and determination of the zero point detection value of the detection device is performed. After the zero point detection value of the detection device is determined, the cantilever is controlled to move to perform a preset detection operation, and whether the printing platform is installed at the first end of the cantilever is further determined according to a result of the preset detection operation.

[0059] The embodiment of the present application can automatically enter the step of continuing to detect the installation of the printing platform in response to the ignore instruction of the prompt information.

[0060] In an embodiment of the present application, the preset detection operation includes at least one of a foreign matter detection operation, a resin detection operation, and a platform leveling detection operation.

[0061] In the related art, when it is detected whether the printing platform is placed during printing, the detection value P at the time is read regardless of the weight of the printing platform when the user instructs printing, and the detection value P is compared with the standard weight of the printing platform of the 3D printing device. For example, when the standard weight of the printing platform is 700 g, if P is less than (-700+100) g, where 100 g is the error range of the weight of the printing platform, it is determined that the printing platform is not installed. This method has the following disadvantages: (1) When the zero point of the detection device drifts to less than -600 g, the user will have a poor operation experience and doubts when the printing platform is placed and it is falsely reported that the printing platform is not installed; (2) When the zero point of the detection device drifts to more than 100 g, the platform detection function fails when the printing platform is not placed and it is reported that the printing platform is placed. That is, in the related art, regardless of the weight of the printing platform, the platform installation detection is directly performed according to the detection value at the moment when printing starts, which affects the accuracy of the detection due to the zero point drift of the detection device.

[0062] The embodiment of the present application can ensure the accuracy of the detection value and the accuracy of the platform installation detection by removing the zero point drift of the detection device, thereby preventing the platform detection function from failing and false reporting due to the zero point drift of the detection device. Moreover, the embodiment of the present application no longer or only determines whether the printing platform is installed according to the detection value at the moment when printing starts, but determines whether the printing platform is installed in combination with the foreign matter detection, resin detection, platform leveling detection, and other processes before exposure, thereby further improving the accuracy of the printing platform installation detection.

[0063] In an embodiment of the present application, when the preset detection operation includes a foreign matter detection operation, the cantilever is controlled to move to perform the foreign matter detection operation, and a result of the foreign matter detection operation is obtained, including:

[0064] controlling the cantilever to descend towards the vat of the 3D printing device, and acquiring a fourth detection value of the detection device during the descending of the cantilever;

[0065] when the fourth detection value changes relative to the first detection value of the detection device, and the duration of the change is greater than or equal to the second threshold value, determining that the result of the foreign matter detection operation is that foreign matter is detected;

[0066] when the fourth detection value does not change relative to the first detection value of the detection device, or the duration of the change is less than the second threshold value, until the first end of the cantilever reaches the preset position, determining that the result of the foreign matter detection operation is that no foreign matter is detected.

[0067] determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation, including: when the result of the foreign matter detection operation is that foreign matter is detected, determining that the first end of the cantilever is installed with the printing platform; and when the result of the foreign matter detection operation is that no foreign matter is detected, determining that the first end of the cantilever is not installed with the printing platform.

[0068] In this embodiment, the judgment of whether there is foreign matter in the 3D printing device is made according to the first detection value of the detection device, that is, the detection value at the moment of starting printing. The case where there is foreign matter includes that the lower surface of the printing platform is stuck with a model or residue, there is residue, broken model or foreign matter from outside in the bottom of the vat.

[0069] After acquiring the first detection value of the detection device, the cantilever is controlled to descend towards the vat of the 3D printing device, and the fourth detection value of the detection device is acquired during the descending of the cantilever. The size relationship between the fourth detection value and the first detection value is detected. If there is foreign matter, the printing platform will be subjected to the force of the foreign matter, so that the fourth detection value is greater than the first detection value, that is, the fourth detection value changes relative to the first detection value. It should be noted that if the printing platform descends to contact the resin in the vat, the force of the resin on the printing platform will also cause a certain change in the detection value. In order to exclude the problem of false judgment caused by contacting the resin, whether there is foreign matter is judged according to the change of the detection value and the duration of the change. Since the resin has fluidity and the foreign matter is relatively hard compared with the resin, the duration of the change in the detection value corresponding to contacting the foreign matter will be greater than the duration of the change in the detection value corresponding to contacting the resin. Therefore, when it is determined that the fourth detection value changes relative to the first detection value, and the duration of the change is greater than or equal to the second threshold value, it is confirmed that foreign matter is detected. When it is determined that the fourth detection value does not change relative to the first detection value of the detection device, or the duration of the change is less than the second threshold value, and the first end of the cantilever reaches the preset position (for example, the z-axis zero point position or a certain position below the z-axis zero point), it is confirmed that no foreign matter is detected. By judging whether the fourth detection value changes relative to the first detection value and the duration of the change, the accuracy of foreign matter detection is improved.

[0070] Since the detection value change and the duration of the change can be monitored only when the printing platform is installed at the first end of the cantilever, the detection value change and the duration of the change cannot be monitored if the printing platform is not installed. Therefore, when it is determined that there is a foreign matter, it can be determined that the cantilever is installed with the printing platform. In the embodiment of the application, the detection of the platform installation is realized through the foreign matter detection, and the accuracy of the printing platform installation detection is improved.

[0071] In an embodiment of the application, when the preset detection operation includes the resin detection operation, the cantilever is controlled to move for the resin detection operation, and a result of the resin detection operation is obtained, including:

[0072] The cantilever is controlled to descend toward the tank of the 3D printing device, and a fifth detection value of the detection device is obtained during the descent of the cantilever;

[0073] When the absolute value of the difference between the fifth detection value and the zero-point detection value is greater than or equal to the third threshold value, it is determined that the result of the resin detection operation is that the resin in the tank of the 3D printing device is detected.

[0074] When the absolute value of the difference between the fifth detection value and the zero-point detection value is less than the third threshold value, until the first end of the cantilever reaches the second preset position, it is determined that the result of the resin detection operation is that the resin in the tank of the 3D printing device is not detected.

[0075] According to the result of the preset detection operation, whether the first end of the cantilever is installed with the printing platform is determined, including: when the result of the resin detection operation is that the resin in the tank of the 3D printing device is detected, it is determined that the first end of the cantilever is installed with the printing platform; and when the result of the resin detection operation is that the resin in the tank of the 3D printing device is not detected, it is determined that the first end of the cantilever is not installed with the printing platform.

[0076] In this embodiment, after the zero-point detection value of the detection device is determined, the resin detection operation is performed to realize the detection of the platform installation. Specifically, the cantilever is controlled to descend toward the tank of the 3D printing device, and whether the resin is detected is judged according to the detection value of the detection device during this descent. The fifth detection value of the detection device is obtained during the descent, and when the absolute value of the difference between the fifth detection value and the zero-point detection value is greater than or equal to the third threshold value, it indicates that the resin is contacted, and when the absolute value of the difference between the fifth detection value and the zero-point detection value is less than the third threshold value, until the first end of the cantilever reaches the second preset position (for example, the z-axis zero-point position or a position below the z-axis zero-point), it indicates that the resin is not contacted.

[0077] The resin detection can be realized when the printing platform is installed at the first end of the cantilever. If the printing platform is not installed, the resin detection cannot be realized. Therefore, when the resin is detected, it can be determined that the printing platform is installed at the cantilever. In the embodiment of the present application, the installation of the platform is detected through the resin detection, and the accuracy of the installation detection of the printing platform is improved.

[0078] In an embodiment of the present application, when the preset detection operation includes the platform leveling detection operation, the cantilever is controlled to move to perform the platform leveling detection operation, and a result of the platform leveling detection operation is obtained, including:

[0079] The cantilever is controlled to descend towards the trough of the 3D printing device or the mounting plate of the 3D printing device, and a sixth detection value of the detection device is obtained during the descent of the cantilever;

[0080] When the absolute value of the difference between the sixth detection value and the zero-point detection value is greater than or equal to the fourth threshold value, it is determined that the result of the platform leveling detection operation is that the 3D printing device leveling is successful.

[0081] When the absolute value of the difference between the sixth detection value and the zero-point detection value is less than the fourth threshold value, until the cantilever descends by a preset height, it is determined that the result of the platform leveling detection operation is that the 3D printing device leveling is abnormal.

[0082] According to the result of the preset detection operation, it is determined whether the first end of the cantilever is installed with the printing platform, including: when the result of the platform leveling detection operation is that the 3D printing device leveling is successful, it is determined that the first end of the cantilever is installed with the printing platform; and when the result of the platform leveling detection operation is that the 3D printing device leveling is abnormal, it is determined that the first end of the cantilever is not installed with the printing platform.

[0083] In this embodiment, after the zero-point detection value of the detection device is determined or the resin detection operation is performed, the platform leveling detection operation is performed to realize the detection of the installation of the platform. Specifically, the cantilever is controlled to descend towards the trough of the 3D printing device or the mounting plate, and the leveling is judged according to the detection value of the detection device during the descent. The sixth detection value of the detection device is obtained during the descent, and when the absolute value of the difference between the sixth detection value and the zero-point detection value is greater than or equal to the fourth threshold value, it indicates that the trough or the mounting plate is contacted and the printing platform is pressed flat, and it is determined that the printing platform leveling is successful. When the absolute value of the difference between the fifth detection value and the zero-point detection value is less than the third threshold value, until the cantilever descends by a preset height, it indicates that the leveling fails.

[0084] The platform leveling detection can be realized when the printing platform is installed at the first end of the cantilever, and the platform leveling detection cannot be realized without the printing platform. Therefore, when the leveling is determined to be successful, it can be determined that the cantilever is installed with the printing platform. The platform leveling detection is used to realize the detection of the platform installation in the embodiment of the application, and the accuracy of the printing platform installation detection is improved.

[0085] In one embodiment, after reading the first detection value, the cantilever can be controlled to descend towards the trough of the 3D printing device or the mounting plate of the 3D printing device, and the sixth detection value of the detection device is obtained during the descent of the cantilever. When the absolute value of the difference between the sixth detection value and the first detection value is greater than or equal to the fifth threshold value, it is determined that the result of the platform leveling detection operation is that the 3D printing device leveling is successful, and then the calibration of the first detection value of the detection device is performed.

[0086] In one embodiment of the application, when the preset detection operation includes the resin detection operation and the platform leveling detection operation, the cantilever is controlled to move to perform the preset detection operation, and whether the first end of the cantilever is installed with the printing platform is determined according to the result of the preset detection operation, including:

[0087] The cantilever is controlled to move to perform the resin detection operation, and the result of the resin detection operation is obtained;

[0088] When the result of the resin detection operation is that the resin in the trough of the 3D printing device is detected, it is determined that the first end of the cantilever is installed with the printing platform;

[0089] When the result of the resin detection operation is that the resin in the trough of the 3D printing device is not detected, the cantilever is controlled to move to perform the platform leveling detection operation, and the result of the platform leveling detection operation is obtained;

[0090] When the result of the platform leveling detection operation is that the 3D printing device leveling is successful, it is determined that the first end of the cantilever is installed with the printing platform;

[0091] When the result of the platform leveling detection operation is that the 3D printing device leveling is abnormal, it is determined that the first end of the cantilever is not installed with the printing platform.

[0092] In this embodiment, the installation of the printing platform is determined through the resin detection operation and the platform leveling detection operation, and the accuracy of the printing platform installation determination is improved. The resin detection operation is performed first, when the resin in the trough of the 3D printing device is detected, it is determined that the printing platform is installed, when the resin in the trough of the 3D printing device is not detected, the platform leveling detection operation is continued. When the 3D printing device leveling is successful, it is determined that the printing platform is installed, and when the 3D printing device leveling is not successful, it is determined that the printing platform is not installed.

[0093] It should be noted that the resin detection operation and the platform leveling detection operation can be used to detect the installation of the printing platform alone, or the resin detection operation and the platform leveling detection operation can be used to detect the installation of the printing platform together. Because when the resin detection operation is performed, if the resin is not detected, it can be due to the printing platform not being installed, or it can be due to the material tank not being placed. If the resin is not detected due to the material tank not being placed, the false alarm of the printing platform not being installed occurs. Then, the subsequent platform leveling detection operation is performed, and whether the leveling is successful is determined to determine whether the printing platform is installed, thereby ensuring the accuracy of the detection of the installation of the printing platform.

[0094] In an embodiment of the present application, it is determined according to the model of the 3D printing device that the printing platform corresponding to the current 3D printing device has a large weight, and the control method in this case is as shown in FIG. 6. Figure 2 As shown in FIG. 6, the printing is started, the first detection value P1 of the detection device is read, and it is determined whether the first detection value P1 is less than or equal to -550g. If not, it is preliminarily determined that the printing platform is installed, and the foreign matter detection is performed; if yes, the user is prompted that the printing platform is not installed. If the user's ignore instruction is received, the foreign matter detection is performed, and if the user's ignore instruction is not received, the subsequent detection device calibration is not performed, and the printing is stopped. It should be noted that after the foreign matter detection, the first end of the cantilever is lifted above the resin liquid level of the material tank of the 3D printing device.

[0095] Further, the second detection value P2 of the detection device when the first end of the cantilever is lifted above the resin liquid level of the material tank of the 3D printing device is read, and it is determined whether (P2-P1) is greater than or equal to the first threshold value. If yes, the zero point detection value of the detection device = P2, and if no, the zero point detection value of the detection device = P1.

[0096] The resin detection operation is performed, and it is determined whether the resin is detected. If yes, it is determined that the printing platform is placed, and the zero point detection value is calibrated to 0g, and if no, the platform leveling detection operation is performed, and it is determined whether the current detection value reaches (the platform weight-500g). If yes, it is determined that the printing platform is placed, and the zero point detection value is calibrated to 0g, and if no, it is determined that the printing platform is not placed.

[0097] The embodiment of the present application, on the one hand, takes the detection value when not soaked in resin as the zero point detection value of the detection device, calibrates the zero point detection value of the printing platform which is static and not affected by the resin buoyancy after confirming the installation of the printing platform each time when starting printing, removes the zero point drift problem of the detection device, and ensures the accuracy of each detection function subsequently performed. On the other hand, the embodiment of the present application no longer or only judges whether the printing platform is installed according to the detection value at the moment when starting printing, but judges whether the printing platform is installed in combination with the foreign matter detection, resin detection, platform leveling detection and other processes before exposure, and further improves the accuracy of the printing platform installation detection.

[0098] In an embodiment of the present application, after calibrating the zero point detection value of the detection device, the method further comprises:

[0099] printing the to-be-printed model, obtaining the printing area of each model layer of the to-be-printed model in the printing process, and the corresponding seventh detection value in the release process of the model layer;

[0100] displaying a mapping diagram between the seventh detection value of the model layer and the corresponding printing area on the interactive interface.

[0101] In this embodiment, after calibrating the zero point detection value of the detection device, the model printing is performed. The printing area (i.e. exposure area) of each model layer of the to-be-printed model in the printing process and the detection value (i.e. seventh detection value) detected by the detection device in the release process of each model layer are obtained, and then a mapping diagram between the detection value of the model layer release and the corresponding printing area is displayed on the interactive interface, realizing the monitoring of the mapping relationship between the printing area and the release force of the model layer, which can provide real-time feedback for the operator and ensure that the operator can take immediate measures for adjustment when an abnormal situation occurs.

[0102] The embodiment of the present application calibrates the zero point detection value of the detection device, eliminates the zero point drift problem of the detection device caused by temperature, power-on and the like, can obtain accurate release force during printing, and makes the mapping relationship between the printing area and the release force more accurate.

[0103] In an embodiment of the present application, displaying a mapping diagram between the seventh detection value of the model layer and the corresponding printing area on the interactive interface comprises:

[0104] displaying a curve change diagram between the seventh detection value of the model layer and the corresponding printing area on the interactive interface; wherein the horizontal axis of the curve change diagram represents the model layer, the first vertical axis represents the seventh detection value of the model layer, and the second vertical axis represents the printing area of the model layer.

[0105] In this embodiment, the mapping diagram can be a curve change diagram, wherein the horizontal axis represents the model layer, the first vertical axis represents the seventh detection value of the model layer, and the second vertical axis represents the printing area of the model layer. By displaying the release force and the printing area of the model layer in the form of a curve diagram, the change trend of the release force and the printing area with the model layer can be clearly shown.

[0106] In an embodiment of the present application, the mapping diagram between the seventh detection value of the model layer and the corresponding printing area is displayed on the interactive interface, comprising:

[0107] On the interactive interface, the mapping diagram between the seventh detection value of all model layers of the model to be printed and the corresponding printing area is displayed, and / or the mapping diagram between the seventh detection value of a preset number of model layers of the model to be printed and the corresponding printing area is displayed.

[0108] In this embodiment, the mapping diagram between the release force and the printing area of all model layers of the model to be printed can be displayed on the interactive interface, so that the operator can master the change of the release force of all printed model layers of the model to be printed.

[0109] The mapping diagram between the release force and the printing area of a preset number of model layers of the model to be printed can also be displayed, and the preset number of model layers can be a preset number of recently printed model layers, for example, the mapping diagram between the release force and the printing area of the last 10 layers of model layers is displayed, so that the operator can master the change of the release force of the recently printed model layers of the model to be printed.

[0110] As shown in Figure 3 The curve change overview diagram of the release force and the printing area of all model layers of the entire model to be printed can be displayed in the upper area of the interactive interface, and the curve change diagram of the last printed preset number of layers can be displayed in the lower area of the interactive interface. In this way, the operator can clearly master the change of the release force of all printed model layers of the model to be printed and the change of the release force of the recently printed model layers.

[0111] The present application also provides a 3D printing device, comprising: a cantilever; a printing platform, which is detachably installed at a first end of the cantilever; a detection device, which is arranged on the cantilever and is used for detecting the printing platform; a memory, which stores programs or instructions; and a processor, which executes the programs or instructions to realize each step of the control method of the 3D printing device and achieve the same technical effects. To avoid repetition, details are not repeated here.

[0112] The memory can be used to store software programs and various data. The memory can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory can include a volatile memory or a non-volatile memory, or the memory can include both a volatile memory and a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synchlink DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0113] The processor can include one or more processing units; optionally, the processor integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor.

[0114] The embodiments of the present application also provide a readable storage medium, and the readable storage medium stores programs or instructions, which are executed by the processor to realize each process of the control method of the 3D printing device and achieve the same technical effects. To avoid repetition, details are not described here.

[0115] The present application also provides the following embodiments:

[0116] 1. A control method of a 3D printing device, the 3D printing device comprising a cantilever, a detection device and a printing platform, the printing platform being detachably mounted at a first end of the cantilever, the detection device being arranged on the cantilever, the detection device being configured to detect the printing platform, the method comprising:

[0117] controlling the cantilever to move to perform a preset detection operation, and determining whether the printing platform is mounted at the first end of the cantilever according to a result of the preset detection operation;

[0118] when it is determined that the printing platform is mounted at the first end of the cantilever, calibrating a zero point detection value of the detection device.

[0119] 2. Based on 1, before the calibration of the zero point detection value of the detection device, the method further comprises:

[0120] in response to a printing instruction, obtaining a first detection value of the detection device when the cantilever is at a current first position;

[0121] controlling the cantilever to lift to a second position, and obtaining a second detection value of the detection device, the second position being higher than a resin liquid level position of a vat of the 3D printing device;

[0122] when a difference between the second detection value and the first detection value is greater than or equal to a first threshold value, taking the second detection value as the zero point detection value to be calibrated of the detection device;

[0123] when the difference between the second detection value and the first detection value is less than the first threshold value, taking the first detection value as the zero point detection value to be calibrated of the detection device;

[0124] Alternatively, before the calibration of the detection value of the detection device, the method further comprises:

[0125] controlling the cantilever to lift to a third position, and obtaining a third detection value of the detection device, the third position being higher than the resin liquid level position of the vat of the 3D printing device;

[0126] taking the third detection value as the zero point detection value to be calibrated of the detection device.

[0127] 3. Based on 2, the control of the cantilever to lift to the second position or the third position comprises:

[0128] after controlling the cantilever to move to perform a foreign matter detection operation, controlling the cantilever to lift to the second position or the third position.

[0129] At 4, based on 2, after the first detection value of the detection device is acquired when the cantilever is at the current first position in response to the printing instruction, the method further comprises:

[0130] If it is determined according to the target information that the weight of the printing platform is greater than or equal to a second threshold, it is determined whether the first detection value is less than or equal to a third threshold, wherein the target information includes any one of a device model, a platform model, and a platform weight of the 3D printing device;

[0131] If the first detection value is less than or equal to the third threshold, prompt information that the printing platform is not installed is sent;

[0132] If the first detection value is greater than the third threshold, it is determined that the first end of the cantilever is installed with the printing platform, and the step of controlling the cantilever to lift to the second position is entered.

[0133] At 5, based on 4, the method further comprises:

[0134] In response to a user ignoring instruction to the prompt information, the step of controlling the cantilever to lift to the second position is entered.

[0135] At 6, based on 1, the preset detection operation includes at least one of a foreign matter detection operation, a resin detection operation, and a platform leveling detection operation.

[0136] At 7, based on 6, when the preset detection operation includes the foreign matter detection operation, the cantilever is controlled to move to perform the foreign matter detection operation, and a result of the foreign matter detection operation is obtained, comprising:

[0137] The cantilever is controlled to descend towards a material tank of the 3D printing device, and a fourth detection value of the detection device is acquired during the descent of the cantilever;

[0138] When the fourth detection value changes relative to the first detection value of the detection device, and the change lasts for a time greater than or equal to a second threshold, it is determined that the result of the foreign matter detection operation is that foreign matter is detected;

[0139] When the fourth detection value does not change relative to the first detection value of the detection device or the change lasts for a time less than the second threshold, until the first end of the cantilever reaches a preset position, it is determined that the result of the foreign matter detection operation is that no foreign matter is detected.

[0140] At 8, based on 6, when the preset detection operation includes the resin detection operation, the cantilever is controlled to move to perform the resin detection operation, and a result of the resin detection operation is obtained, comprising:

[0141] controlling the cantilever to descend towards a vat of the 3D printing device, and acquiring a fifth detection value of the detection device during the descending of the cantilever;

[0142] when an absolute value of a difference between the fifth detection value and the zero-point detection value is greater than or equal to a third threshold value, determining that a result of the resin detection operation is that resin in the vat of the 3D printing device is detected;

[0143] when the absolute value of the difference between the fifth detection value and the zero-point detection value is less than the third threshold value until the first end of the cantilever reaches a second preset position, determining that the result of the resin detection operation is that resin in the vat of the 3D printing device is not detected.

[0144] Label 9, on the basis of label 6, when the preset detection operation includes the platform leveling detection operation, controlling the cantilever to move to perform the platform leveling detection operation, and obtaining a result of the platform leveling detection operation, comprising:

[0145] controlling the cantilever to descend towards a vat of the 3D printing device or a mounting plate of the 3D printing device, and acquiring a sixth detection value of the detection device during the descending of the cantilever;

[0146] when an absolute value of a difference between the sixth detection value and the zero-point detection value is greater than or equal to a fourth threshold value, determining that a result of the platform leveling detection operation is that the 3D printing device leveling is successful;

[0147] when the absolute value of the difference between the sixth detection value and the zero-point detection value is less than the fourth threshold value until the cantilever descends a preset height, determining that the result of the platform leveling detection operation is that the 3D printing device leveling is abnormal.

[0148] Label 10, on the basis of label 6, when the preset detection operation includes the foreign matter detection operation, the determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation, comprising:

[0149] when the result of the foreign matter detection operation is that foreign matter is detected, determining that the first end of the cantilever is installed with the printing platform;

[0150] when the result of the foreign matter detection operation is that foreign matter is not detected, determining that the first end of the cantilever is not installed with the printing platform.

[0151] Label 11, on the basis of label 6, when the preset detection operation includes the resin detection operation, the determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation, comprising:

[0152] when the result of the resin detection operation is that resin in the vat of the 3D printing device is detected, determining that the first end of the cantilever is installed with the printing platform;

[0153] when the result of the resin detection operation is that resin in the vat of the 3D printing device is not detected, determining that the first end of the cantilever is not installed with the printing platform.

[0154] In label 12, on the basis of label 6, when the preset detection operation includes the platform leveling detection operation, the determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation includes:

[0155] when the result of the platform leveling detection operation is that the 3D printing device is leveled successfully, determining that the first end of the cantilever is installed with the printing platform;

[0156] when the result of the platform leveling detection operation is that the 3D printing device is leveled abnormally, determining that the first end of the cantilever is not installed with the printing platform.

[0157] In label 13, on the basis of label 6, when the preset detection operation includes the resin detection operation and the platform leveling detection operation, the controlling the cantilever to move to perform a preset detection operation, and determining whether the first end of the cantilever is installed with the printing platform according to the result of the preset detection operation includes:

[0158] controlling the cantilever to move to perform the resin detection operation, and obtaining the result of the resin detection operation;

[0159] when the result of the resin detection operation is that resin in the vat of the 3D printing device is detected, determining that the first end of the cantilever is installed with the printing platform;

[0160] when the result of the resin detection operation is that resin in the vat of the 3D printing device is not detected, controlling the cantilever to move to perform the platform leveling detection operation, and obtaining the result of the platform leveling detection operation;

[0161] when the result of the platform leveling detection operation is that the 3D printing device is leveled successfully, determining that the first end of the cantilever is installed with the printing platform;

[0162] when the result of the platform leveling detection operation is that the 3D printing device is leveled abnormally, determining that the first end of the cantilever is not installed with the printing platform.

[0163] In label 14, on the basis of any one of labels 1 to 13, after the zero point detection value of the detection device is calibrated, the method further includes:

[0164] printing the to-be-printed model, obtaining a printing area of a plurality of model layers of the to-be-printed model in a printing process and a corresponding seventh detection value of the model layers in a releasing process;

[0165] displaying a mapping diagram between the seventh detection value of the model layers and the corresponding printing area on the interactive interface.

[0166] Label 15, on the basis of label 14, the mapping diagram between the seventh detection value of the model layers and the corresponding printing area displayed on the interactive interface comprises:

[0167] displaying a curve change diagram between the seventh detection value of the model layers and the corresponding printing area on the interactive interface; wherein the horizontal axis of the curve change diagram represents the model layers, the first vertical axis represents the seventh detection value of the model layers, and the second vertical axis represents the printing area of the model layers.

[0168] Label 16, on the basis of label 14, the mapping diagram between the seventh detection value of the model layers and the corresponding printing area displayed on the interactive interface comprises:

[0169] displaying a mapping diagram between the seventh detection value of all the model layers of the to-be-printed model and the corresponding printing area on the interactive interface, and / or displaying a mapping diagram between the seventh detection value of a preset number of model layers of the to-be-printed model and the corresponding printing area.

[0170] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0171] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A control method for a 3D printing device, characterized in that, The 3D printing equipment includes a cantilever, a detection device, and a printing platform. The printing platform is detachably mounted on the first end of the cantilever. The detection device is disposed on the cantilever and is used to detect the printing platform. The method includes: Control the movement of the cantilever to perform a preset detection operation, and determine whether the printing platform is installed at the first end of the cantilever based on the result of the preset detection operation; When it is determined that the printing platform is installed at the first end of the cantilever, the zero-point detection value of the detection device is calibrated. Before calibrating the detection values ​​of the detection device, the method further includes: In response to a printing command, the first detection value of the detection device is obtained when the cantilever is in its current first position; The cantilever is controlled to rise to a second position, and a second detection value is obtained from the detection device. The second position is higher than the resin liquid level in the material tank of the 3D printing equipment. When the difference between the second detection value and the first detection value is greater than or equal to the first threshold, the second detection value is used as the zero-point detection value to be calibrated for the detection device. When the difference between the second detection value and the first detection value is less than the first threshold, the first detection value is used as the zero-point detection value to be calibrated for the detection device; Alternatively, before calibrating the detection values ​​of the detection device, the method further includes: The cantilever is controlled to rise to a third position, and a third detection value is obtained from the detection device. The third position is higher than the resin liquid level in the material tank of the 3D printing equipment. The third detection value is used as the zero-point detection value to be calibrated for the detection device.

2. The method according to claim 1, characterized in that, Controlling the cantilever to rise to the second or third position includes: After controlling the movement of the cantilever to perform the foreign object detection operation, the cantilever is controlled to be raised to the second position or the third position; After obtaining the first detection value of the detection device when the cantilever is in its current first position in response to the printing command, the method further includes: If the weight of the printing platform is determined to be greater than or equal to the second threshold based on the target information, then it is determined whether the first detection value is less than or equal to the third threshold. The target information includes any one of the equipment model of the 3D printing equipment, the platform model, and the platform weight. If the first detection value is less than or equal to the third threshold, a prompt message indicating that the printing platform is not installed will be issued; If the first detection value is greater than the third threshold, it is determined that the printing platform is installed at the first end of the cantilever, and the step of controlling the cantilever to be raised to the second position is entered; The method further includes: In response to the user's instruction to ignore the prompt, the process proceeds to the step of controlling the cantilever to be raised to the second position.

3. The method according to claim 1, characterized in that, The preset detection operations include at least one of foreign object detection, resin detection, and platform leveling detection.

4. The method according to claim 3, characterized in that, When the preset detection operation includes the foreign object detection operation, the cantilever is controlled to move to perform the foreign object detection operation, and the result of the foreign object detection operation is obtained, including: The cantilever is controlled to descend toward the material trough of the 3D printing equipment, and a fourth detection value of the detection device is acquired during the descent of the cantilever. When the fourth detection value changes relative to the first detection value of the detection device, and the duration of the change is greater than or equal to the second threshold, the result of the foreign object detection operation is determined to be that a foreign object has been detected. When the fourth detection value does not change relative to the first detection value of the detection device or the duration of the change is less than the second threshold, until the first end of the cantilever reaches the preset position, the result of the foreign object detection operation is determined to be that no foreign object is detected. When the preset detection operation includes the resin detection operation, the cantilever is controlled to move to perform the resin detection operation, and the result of the resin detection operation is obtained, including: The cantilever is controlled to descend toward the material trough of the 3D printing equipment, and the fifth detection value of the detection device is acquired during the descent of the cantilever; When the absolute value of the difference between the fifth detection value and the zero-point detection value is greater than or equal to the third threshold, the result of the resin detection operation is determined to be that resin has been detected in the material tank of the 3D printing equipment. When the absolute value of the difference between the fifth detection value and the zero-point detection value is less than the third threshold, until the first end of the cantilever reaches the second preset position, the result of the resin detection operation is determined to be that no resin was detected in the material tank of the 3D printing equipment.

5. The method according to claim 3, characterized in that, The preset detection operation includes controlling the cantilever to move during the platform leveling detection operation, and obtaining the result of the platform leveling detection operation, including: The cantilever is controlled to descend toward the material trough of the 3D printing equipment or the mounting plate of the 3D printing equipment, and the sixth detection value of the detection device is obtained during the descent of the cantilever. When the absolute value of the difference between the sixth detection value and the zero-point detection value is greater than or equal to the fourth threshold, the result of the platform leveling detection operation is determined to be that the 3D printing equipment has been successfully leveled. When the absolute value of the difference between the sixth detection value and the zero-point detection value is less than the fourth threshold, until the cantilever descends a preset height, the result of the platform leveling detection operation is determined to be that the 3D printing equipment leveling abnormality has been detected. When the preset detection operation includes the foreign object detection operation, determining whether the printing platform is installed at the first end of the cantilever based on the result of the preset detection operation includes: When the result of the foreign object detection operation is that a foreign object is detected, it is determined that the printing platform is installed at the first end of the cantilever; When the result of the foreign object detection operation is that no foreign object is detected, it is determined that the printing platform is not installed at the first end of the cantilever.

6. The method according to claim 3, characterized in that, When the preset detection operation includes the resin detection operation, determining whether the printing platform is installed at the first end of the cantilever based on the result of the preset detection operation includes: When the result of the resin detection operation is that resin is detected in the material tank of the 3D printing equipment, it is determined that the printing platform is installed at the first end of the cantilever. When the result of the resin detection operation is that no resin is detected in the material tank of the 3D printing equipment, it is determined that the printing platform is not installed at the first end of the cantilever. When the preset detection operation includes the platform leveling detection operation, determining whether the printing platform is installed at the first end of the cantilever based on the result of the preset detection operation includes: When the result of the platform leveling detection operation is that the 3D printing equipment is successfully leveled, it is determined that the printing platform is installed at the first end of the cantilever. When the result of the platform leveling detection operation is that the 3D printing equipment is found to be abnormally leveled, it is determined that the printing platform is not installed at the first end of the cantilever.

7. The method according to claim 3, characterized in that, When the preset detection operation includes the resin detection operation and the platform leveling detection operation, controlling the cantilever to move to perform the preset detection operation, and determining whether the printing platform is installed at the first end of the cantilever based on the result of the preset detection operation, includes: The cantilever is controlled to move to perform the resin detection operation, and the result of the resin detection operation is obtained. When the result of the resin detection operation is that resin is detected in the material tank of the 3D printing equipment, it is determined that the printing platform is installed at the first end of the cantilever. When the result of the resin detection operation is that no resin is detected in the material tank of the 3D printing equipment, the cantilever is controlled to move to perform the platform leveling detection operation, and the result of the platform leveling detection operation is obtained. When the result of the platform leveling detection operation is that the 3D printing equipment is successfully leveled, it is determined that the printing platform is installed at the first end of the cantilever. When the result of the platform leveling detection operation is that the 3D printing equipment is found to be abnormally leveled, it is determined that the printing platform is not installed at the first end of the cantilever.

8. The method according to any one of claims 1 to 7, characterized in that, After calibrating the zero-point detection value of the detection device, the method further includes: Print the model to be printed, and obtain the printing area of ​​multiple model layers of the model to be printed during the printing process, as well as the seventh detection value corresponding to the release process of the model layers; The interactive interface displays a mapping diagram between the seventh detection value of the model layer and the corresponding printing area; The step of displaying a mapping diagram between the seventh detection value of the model layer and the corresponding printed area on the interactive interface includes: The interactive interface displays a curve showing the relationship between the seventh detection value of the model layer and the corresponding printing area; wherein, the horizontal axis of the curve represents the model layer, the first vertical axis represents the seventh detection value of the model layer, and the second vertical axis represents the printing area of ​​the model layer; The step of displaying a mapping diagram between the seventh detection value of the model layer and the corresponding printed area on the interactive interface includes: The interactive interface displays a mapping diagram between the seventh detection value of all model layers of the model to be printed and the corresponding printing area, and / or displays a mapping diagram between the seventh detection value of a preset number of model layers of the model to be printed and the corresponding printing area.

9. A 3D printing device, characterized in that, include: cantilever; A printing platform, which is detachably mounted to the first end of the cantilever; A detection device is mounted on the cantilever and is used to detect the printing platform. A memory that stores programs or instructions; A processor that, when executing the program or instructions, implements the steps of the control method for the 3D printing equipment as described in any one of claims 1 to 8.

10. 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 3D printing equipment as described in any one of claims 1 to 8.

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