3D printing secondary curing furnace and control method therefor, and electronic device

Abstract

The application provides a 3D printing secondary curing furnace and a control method therefor, and an electronic device. The secondary curing furnace comprises: individual furnace units and conveyance assemblies. Each individual furnace unit comprises a housing, said housing having an inlet and an outlet, a furnace door being arranged at both the inlet and the outlet of the housing, and an inner cavity of the housing having a light source fixed therein; each individual furnace unit is provided with an exhaust component and an inert gas infusion component, the exhaust component and the inert gas infusion component both being communicated with the inner cavity of the housing; a conveyance assembly is arranged in the inner cavity of each housing, one end of the conveyance assembly being near the inlet of the housing, and the other end of the conveyance assembly being near the outlet of the housing. In the secondary curing furnace of the present application, the amount and pressure of inert gas in the furnace is increased, thus improving the photocuring efficiency of said furnace.

Description

3D printing secondary curing furnace and control method thereof, and electronic equipment Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing secondary curing furnace, a control method thereof, and electronic equipment. Background Art

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a foundation and uses bondable materials such as powdered metal or plastic to construct objects layer by layer. This technology is typically implemented using digital material printers. 3D printing is commonly used to create models in fields such as mold making and industrial design, but is now increasingly being used for the direct manufacture of some products.

[0003] 3D printing technology has applications in industrial design, architecture, automotive, aerospace, dentistry, the medical industry, civil engineering, and other fields. Taking 3D printed dental models as an example, 3D printing technology can be used to create dental models for oral treatments such as orthodontics, porcelain veneers, and dental implants. The main steps include: acquiring the geometric shape and structure of teeth through scanning or photographing; processing the acquired dental data, such as removing noise and smoothing the surface, to optimize printing; using CAD software to create a three-dimensional model of the teeth, including shape, size, and color; printing the created dental model using a 3D printer, typically a high-precision, high-resolution 3D printer; and post-processing the printed dental model, such as cleaning, polishing, and coloring, to better simulate real teeth. While the 3D printing process is illustrated above using a 3D printed dental model as an example, the printing of other models follows essentially the same or similar processes.

[0004] The entire 3D printing process also involves post-processing issues, and curing of printed models is one of the more important steps. A secondary curing oven is an auxiliary special equipment designed and manufactured specifically for the 3D printing industry, which is used to dry and cure printed 3D models. This type of curing oven generally uses UVLED (ultraviolet LED) to achieve the curing effect, which has the characteristics of instant on and off, and the UVLED has a long service life, which can reduce the maintenance cost of the equipment. However, existing secondary curing ovens have some shortcomings: First, the effective gas content (inert gas) and pressure in the furnace are poorly controllable, resulting in low light curing efficiency and long light curing time; second, the volume of the curing oven is fixed, which limits the use scenarios of the curing oven and makes it impossible to flexibly configure the working volume according to the actual number of printed models.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a 3D printing secondary curing furnace and its control method and electronic equipment, so as to increase the inert gas content and pressure in the furnace and improve the light curing efficiency in the secondary curing furnace.

[0007] In order to solve the above technical problems, in the first aspect, the present invention provides a 3D printing secondary curing furnace, comprising: a furnace unit and a transmission component, wherein the furnace unit includes a shell, the shell has an inlet and an outlet, the inlet and outlet of the shell are both provided with furnace doors, and a light source is fixed to the inner cavity of the shell; an exhaust component and an inert gas filling component are provided, and the exhaust component and the inert gas filling component are respectively communicated with the inner cavity of the shell; the transmission component is arranged in the inner cavity of the shell, one end of the transmission component is close to the inlet of the shell, and the other end is close to the outlet of the shell.

[0008] Optionally, two sets of the light sources are fixed in the inner cavity of the shell, and the two sets of the light sources are respectively arranged above and below the shell.

[0009] Optionally, a water cooling component is provided at the light source.

[0010] Optionally, the oven door has a sealing ring, one side of the sealing ring is in contact with the oven door, and the other side of the sealing ring has a notch.

[0011] Optionally, a pressure monitoring component is provided for monitoring the gas pressure in the furnace cell, and / or a temperature monitoring component is provided for monitoring the real-time temperature in the furnace cell.

[0012] Optionally, a light detector is further provided, and the light detector is used to detect whether there is an object to be solidified on the transmission component.

[0013] Optionally, on the side surface of the furnace unit, the charging ports of the inert gas charging component are distributed on the left and right sides of the side surface, and the exhaust ports of the exhaust component are distributed on the upper and lower sides of the side surface.

[0014] Optionally, it includes a furnace body, which is formed by splicing several furnace monomers in sequence, and the outlet of the previous furnace monomer is connected to the inlet of the next furnace monomer; the inlet and outlet of the furnace body are respectively the inlet and outlet of the furnace monomers at the head and tail ends; the first end and the second end of the transmission component are respectively close to the inlet and outlet of the furnace body.

[0015] Optionally, an inspection door is further provided on the side of the shell.

[0016] In a second aspect, the present invention provides a control method for a 3D printing secondary curing furnace, which is applied to the secondary curing furnace as shown in the first aspect, and includes: monitoring whether the transmission component is operating normally; when the transmission component is operating normally, starting the transmission component to bring the object to be cured into the secondary curing furnace; closing the furnace door of the secondary curing furnace; controlling the exhaust component to start exhausting, and when the gas pressure in the furnace body or furnace monomer reaches a preset pressure value, controlling the inert gas filling component to fill in inert gas; turning on the light source of the secondary curing furnace when the inert gas is injected to the preset pressure; starting to release the pressure after the preset curing time is completed, and opening the furnace door until the pressure is balanced to send the product on the transmission component away.

[0017] Optionally, the method further includes: controlling the secondary curing oven to perform a power-on self-test.

[0018] Optionally, during the process of sending away the products on the transmission component, it is detected whether there are any products on the transmission component that have not been successfully sent away.

[0019] Optionally, the preset pressure value is 8000Pa~10000Pa.

[0020] Optionally, the preset pressure of the inflation gas is 100,000 Pa to 110,000 Pa.

[0021] Optionally, the light source temperature of the secondary curing furnace is preheated to 38° C. to 40° C., and the preset curing time is 10 minutes.

[0022] In a third aspect, the present invention provides a control device for a 3D printing secondary curing furnace, comprising: a starting module for monitoring whether a transmission component is operating normally; when the transmission component is operating normally, starting the transmission component to bring the object to be cured into the secondary curing furnace; a door closing module for closing the door of the secondary curing furnace; a gas control module for controlling the vacuum component to start vacuuming, and controlling the inert gas filling component to fill with inert gas when the gas pressure in the furnace body or furnace monomer is pumped to a preset pressure value; a light starting module for turning on the light source of the secondary curing furnace when the inert gas is injected to a preset pressure; and an ending module for starting to release pressure after the preset curing time is completed, and opening the furnace door until the pressure is balanced to send the product on the transmission component away.

[0023] In a fourth aspect, the present invention provides an electronic device comprising: a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the control method of the 3D printing secondary curing furnace as described in the second aspect are implemented.

[0024] In a fifth aspect, the present invention provides a readable storage medium storing a program or instruction. When the program or instruction is executed by a processor, the steps of the control method of the 3D printing secondary curing furnace as described in the second aspect are implemented.

[0025] Compared with the prior art, the present invention has the following advantages: the structure of the secondary curing furnace is improved, and a furnace unit and a transmission component are provided. The furnace unit includes a shell, the shell has an inlet and an outlet, the inlet and the outlet of the shell are both provided with furnace doors, and a light source is fixed in the inner cavity of the shell; an exhaust component and an inert gas filling component are also provided, and the exhaust component and the inert gas filling component are respectively in air communication with the inner cavity of the shell; the inner cavity of the shell is arranged with a transmission component, one end of the transmission component is close to the inlet of the shell, and the other end is close to the outlet of the shell, and then the exhaust component extracts other gases or impurity gases in the furnace, so that an effective single inert gas is maintained in the furnace as much as possible, thereby increasing the inert gas content and pressure in the furnace, and improving the light curing efficiency in the secondary curing furnace.

[0026] Summary of the Figures

[0027] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0028] FIG1 is a schematic structural diagram of a 3D printing secondary curing furnace according to an embodiment of the present invention;

[0029] FIG2 is a schematic structural diagram of a 3D printing secondary curing furnace according to an embodiment of the present invention;

[0030] FIG3 is a schematic diagram of the structure of a sealing ring according to an embodiment of the present invention;

[0031] FIG4 is a detailed structural diagram of a sealing ring according to an embodiment of the present invention;

[0032] FIG5 is a schematic diagram of a furnace door closed in one embodiment of the present invention;

[0033] FIG6 is a cross-sectional view of a furnace door closed in one embodiment of the present invention;

[0034] FIG7 is a schematic flow chart of a method for controlling a 3D printing secondary curing furnace according to an embodiment of the present invention;

[0035] FIG8 is a schematic structural diagram of a control device for a 3D printing secondary curing furnace according to an embodiment of the present invention;

[0036] FIG9 is a schematic diagram of an electronic device according to an embodiment of the present invention.

[0037] Figure numerals: 10 - furnace body; 100 - furnace unit; 110 - shell, 111 - inlet, 112 - outlet; 120 - water cooling component; 130 - light source; 140 - exhaust component, 141 - exhaust port; 150 - inert gas charging component, 151 - charging port; 160 - furnace door, 161 - sealing ring; 170 - light detector; 180 - maintenance door; 200 - transmission component; 20 - object to be cured (product after curing).

[0038] Preferred embodiments of the present invention

[0039] The present invention is further described below in conjunction with specific implementation methods and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific implementation method.

[0040] For example, a description later in the specification of a first feature being formed above or on a second feature may include an embodiment in which the first and second features are directly connected, or an embodiment in which an additional feature is formed between the first and second features, thereby eliminating the need for a direct connection between the first and second features. Furthermore, when a first element is described as being connected to or coupled to a second element, the description includes embodiments in which the first and second elements are directly connected or coupled to each other, as well as embodiments in which the first and second elements are indirectly connected or coupled to each other using one or more other intervening elements.

[0041] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent variations, and modifications made to the above embodiments in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

[0042] Example 1

[0043] Figure 1 is a schematic structural diagram of a 3D printing secondary curing furnace according to an embodiment of the present invention, showing the overall structure of the secondary curing furnace according to this embodiment. In order to better illustrate the essential content of this embodiment, Figure 1 is simplified, as shown in Figure 2, which is a schematic structural diagram of a 3D printing secondary curing furnace according to an embodiment of the present invention. The structure of the secondary curing furnace according to this embodiment is explained in combination with Figures 1 and 2.

[0044] The secondary curing furnace of this embodiment includes: a furnace unit 100 and a transmission component 200, wherein the furnace unit 100 includes a shell 110, the shell 110 has an inlet 111 and an outlet 112, and the inlet 111 and outlet 112 of the shell 110 are both provided with furnace doors 160, and a light source 130 is fixed to the inner cavity of the shell 110; an exhaust component 140 and an inert gas filling component 150 are provided, and the exhaust component 140 and the inert gas filling component 150 are respectively in air communication with the inner cavity of the shell 110; the inner cavity of the shell 110 is arranged with a transmission component 200, one end of the transmission component 200 is close to the inlet 111 of the shell 110, and the other end is close to the outlet 112 of the shell 110.

[0045] In this embodiment, the shell 110 is the external component of the furnace unit 100, and most of the other components or parts are fixed or connected to the shell 110. At the same time, the inner cavity formed by the shell 110 is the location for light curing. The main function of the transmission component 200 is to transport the object to be cured 20 to the inner cavity of the shell 110 and to send the product out of the inner cavity of the shell 110. In addition, it plays the role of supporting the object to be cured 20 during the curing process. One end (T1) of the transmission component 200 is close to the inlet 111 of the shell 110, and the other end (T2) is close to the outlet 112 of the shell 110. The object to be cured 20 is input from the inlet 111 and the cured product is sent out from the outlet 112. As can be seen from the figure, the furnace unit 100 is connected to an exhaust component 140 and an inert gas filling component 150. Of course, in order to show the exhaust component 140 and the inert gas filling component 150 in Figure 2, they are arranged on the right side of the furnace unit 100. In fact, the exhaust component 140 and the inert gas filling component 150 are generally on the front and back sides of the figure. This layout will not affect the transportation of the object to be cured 20 or product at the inlet 111 and outlet 112 on both sides of the shell 110. Before adding inert gas (such as nitrogen), this embodiment uses the exhaust component 140 to extract other gases in the inner cavity. On the one hand, a negative pressure is generated in the furnace, which is beneficial to the subsequent inert gas filling efficiency; on the other hand, since other gases or impurity gases are extracted, the inert gas content in the furnace is higher, which is beneficial to improving the light curing effect, that is, improving the light curing efficiency.

[0046] In one example, two sets of light sources 130 are fixed in the inner cavity of the housing 110 , and the two sets of light sources 130 are respectively arranged above and below the housing 110 .

[0047] The light intensity and uniformity in the furnace will directly affect the effect of photocuring. The higher the light intensity, the faster the photocuring speed. In addition, if the light intensity in the furnace is uneven, it may cause uneven photocuring or the appearance of dead angles. Referring to Figure 2, a light source 130 is fixed above the inner cavity of the shell 110, and a light source 130 is also fixed below the inner cavity of the shell 110. Since there are two light sources 130 in the furnace, the light intensity of the entire inner cavity will inevitably increase. Having light sources 130 on both the upper and lower sides will also make the light uniformity of the inner cavity better than when there is only one light source 130 (such as only above or only below), which is beneficial to the photocuring process of the object to be cured 20 and improves the photocuring efficiency.

[0048] In one example, a water cooling component 120 is provided at the light source 130 .

[0049] During the photocuring process, the water cooling component 120 at the light source 130 plays a vital role. The light source 130 will generate a large amount of heat during long-term operation. If this heat cannot be discharged in a timely and effective manner, the temperature of the light source 130 will increase, thereby affecting its luminous efficiency and stability. The main function of the water cooling component 120 is to dissipate heat from the light source 130 and ensure that the light source 130 operates within a stable temperature range to ensure the quality and efficiency of photocuring. Traditional secondary curing furnaces use air for natural cooling, and the light source 130 is prone to attenuation. This embodiment uses a water cooling component 120 to cool the light source 130, which extends the service life of the light source 130.

[0050] In one example, the oven door 160 has a sealing ring 161, one side of the sealing ring 161 is in contact with the oven door 160, and the other side of the sealing ring 161 has a notch. For example, the notch can be a trapezoidal notch.

[0051] A good sealing effect inside the furnace can prevent oxygen from entering. The light-curing reaction usually needs to be carried out in an oxygen-free or low-oxygen environment because oxygen will inhibit the progress of the light-curing reaction. Sealing can effectively isolate the oxygen in the air, thereby creating an environment that is conducive to the light-curing reaction.

[0052] FIG3 is a schematic diagram of the sealing ring structure in one embodiment of the present invention, and FIG4 is a detailed schematic diagram of the sealing ring structure in one embodiment of the present invention. Referring to FIG3 and FIG4 , the furnace door 160 adopts a dual-effect sealing design. One side of the sealing ring 161 is in contact with the edge of the furnace door, as shown on the right side in FIG4 ; the other side is designed as a trapezoidal recess. As shown on the left side in FIG4 , when the furnace door 160 is closed, the sealing ring 161 is deformed by force, and the cutting edge A of the sealing ring 161 extends outward to increase the sealing surface area, that is, to increase the contact area between the sealing ring and the housing 110, thereby improving the sealing effect. The sealing effect can be seen in FIG5 and FIG6 . Another advantage of this structure is that it can solve the problem that the furnace door 160 cannot be closed tightly or is closed too tightly and cannot be opened quickly due to the original integral sealing ring 161 structure.

[0053] In one example, the secondary curing furnace is further provided with a pressure monitoring component (not shown in the figure) for monitoring the gas pressure in the furnace unit 100, and / or a temperature monitoring component (not shown in the figure) for monitoring the real-time temperature in the furnace unit 100.

[0054] Temperature is a key factor affecting the rate and effectiveness of photocuring reactions. Through in-furnace monitoring, temperature changes during the curing process can be monitored in real time, ensuring that the temperature is kept within an appropriate range to ensure the smooth progress of the photocuring reaction. Therefore, real-time temperature monitoring and control through in-furnace monitoring is essential. Furthermore, real-time temperature recording and storage can be performed to provide data support for subsequent analysis and optimization. For example, by analyzing temperature curves and data, the patterns and influencing factors of the photocuring process can be understood, providing strong support for optimizing the process and improving product quality. Similarly, pressure monitoring within the secondary curing furnace ensures a stable environment within the curing furnace, thereby providing consistent curing conditions. Continuous monitoring of the furnace pressure can also generate detailed data records, facilitating product quality traceability, process improvement, and subsequent analysis.

[0055] In one example, the secondary curing oven is further provided with a light detector 170 , and the light detector 170 is used to detect whether the object to be cured 20 is present on the transmission component 200 .

[0056] In this embodiment, a light detector 170 is provided to promptly detect the presence of the object 20 / product to be cured on the transport component 200, thereby ensuring operational safety. For example, if the absence of the object 20 to be cured is detected during transport of the object 20 to the furnace, it indicates that the object 20 to be cured has fallen. Alternatively, if the presence of a cured product on the transport component 200 is detected during the repositioning process, it indicates that the product was not successfully removed. In these cases, prompt maintenance of the secondary curing furnace is required to prevent damage to the furnace caused by the fallen object 20 / product.

[0057] In one example, on the side of the furnace unit 100 , the inert gas charging port of the inert gas charging component 150 is distributed on the left and right sides of the side, and the exhaust port of the exhaust component 140 is distributed on the upper and lower sides of the side.

[0058] As shown in Figure 1, taking one of the furnace units 100 as an example, the upper and lower sides of the side of the furnace unit 100 have exhaust ports 140, and the left and right sides have filling ports 151. The dispersed arrangement of the gas ports can enable the inert gas finally filled into the furnace to be evenly filled in the entire furnace space, which is beneficial to improving the efficiency of photocuring.

[0059] In one example, the secondary curing furnace of this embodiment includes a furnace body 10, which is composed of several furnace monomers 100 spliced ​​together in sequence. The outlet 112 of the previous furnace monomer 100 is connected to the inlet 111 of the next furnace monomer 100. The inlet 111 and outlet 112 of the furnace body 10 are the inlet 111 and outlet 112 of the furnace monomers 100 at the head and tail ends, respectively. The first end (T1) and the second end (T2) of the transmission component 200 are close to the inlet 111 and outlet 112 of the furnace body 10, respectively.

[0060] That is to say, the secondary curing furnace of this embodiment can not only include only one furnace monomer 100, which is used when the number of objects 20 to be cured is small, but can also include a furnace body 10 composed of multiple furnace monomers 100. This structure can be used when the number of objects 20 to be cured is large. At the same time, since the secondary curing furnace is designed in a splicing mode, furnace bodies 10 of appropriate volume or length can be spliced ​​according to actual use needs. For example, the furnace body shown in Figure 1 is spliced ​​together by 4 furnace monomers 100. Of course, the furnace body 10 can also be spliced ​​together by 3, 5 or other numbers of furnace monomers 100. In addition, this splicing method of furnace monomers 100 solves the problem that traditional large-scale curing furnaces cannot be split into sub-units for transportation and the transportation is inconvenient. This embodiment can split the furnace body 10 into furnace monomers 100 (sub-units), which is more convenient to transport and can theoretically expand the scale of the curing furnace without upper limit.

[0061] In one example, the housing 110 is further provided with an inspection door 180 on its side. Referring to FIG1 , each furnace unit 100 is provided with an inspection door 180 on its side (either one or both sides) to facilitate inspection of the furnace interior and facilitate repairs in the event of a furnace failure. As can be seen in the figure, the air inlet 151 and the air outlet 141 are arranged around the inspection door 180.

[0062] The 3D printing secondary curing furnace provided in this embodiment is provided with a furnace unit 100 / furnace body 10 and a transmission component 200. The furnace unit 100 includes a shell 110, which has an inlet 111 and an outlet 112. The inlet 111 and the outlet 112 of the shell 110 are both provided with a furnace door 160. A light source 130 is fixed in the inner cavity of the shell 110; an exhaust component 140 and an inert gas filling component 150 are provided, and the exhaust component 140 and the inert gas filling component 150 are respectively connected to the inner cavity of the shell 110; the inner cavity of the shell 110 is arranged with a transmission component 200, one end of the transmission component 200 is close to the inlet 111 of the shell 110, and the other end is close to the outlet 112 of the shell 110, and then the exhaust component 140 extracts other gases or impurity gases in the furnace, so as to maintain an effective single inert gas in the furnace as much as possible, increase the inert gas content and pressure in the furnace, and improve the light curing efficiency in the secondary curing furnace.

[0063] Example 2

[0064] Figure 7 is a flow chart of a control method for a 3D printing secondary curing furnace according to an embodiment of the present invention. Referring to Figure 7, method 700 can be applied to the secondary curing furnace shown in Example 1, but is not limited thereto. Method 700 includes: S710, monitoring whether the transmission component is operating normally; when the transmission component is operating normally, starting the transmission component to bring the object to be cured into the secondary curing furnace; S720, closing the furnace door of the secondary curing furnace; S730, controlling the exhaust component to start exhausting, and when the gas pressure in the furnace body or furnace monomer reaches a preset pressure value, controlling the inert gas filling component to fill with inert gas; S740, turning on the light source of the secondary curing furnace when the inert gas is injected to a preset pressure; S750, starting to release the pressure after the preset curing time is completed, and opening the furnace door until the pressure is balanced to send the product on the transmission component away.

[0065] In this embodiment, to ensure the efficient light-curing process, the light-curing process can be automatically controlled, with a preset execution program sequentially controlling the opening and closing of various components within the secondary curing oven. This not only improves work efficiency but also ensures product quality. Using the method of this embodiment, before adding an inert gas (such as nitrogen), this embodiment uses an exhaust component to extract other gases from the inner cavity. On the one hand, this creates a negative pressure within the oven, which is beneficial for the subsequent filling efficiency of the inert gas. On the other hand, the extraction of other gases or impurities increases the inert gas content within the oven, which is beneficial for enhancing the light-curing effect, that is, improving the light-curing efficiency.

[0066] It can be understood that the entire curing process of the secondary curing furnace can be regarded as an operation process and a working process. It can be seen that the steps described in the above method 700 are actually the various execution nodes controlled by software or programs, that is, the operation process, and the working process is the continuous process between each node, such as transmission, heating, light curing, etc. Compared with the operation process, although the working process is not directly controlled by software or programs, it is also part of the secondary curing process of this embodiment. Those skilled in the art can understand that the method 700 of this embodiment essentially includes the entire process (operation process and working process).

[0067] For example, the control program or software of the method 700 of this embodiment can be written in C language, but is not limited to this language. Different programming languages ​​have no necessary connection between the implementation of the method 700 and the operating efficiency of the secondary curing furnace.

[0068] In one example, the method 700 further includes controlling the post-curing oven to perform a power-on self-test.

[0069] The self-test process checks all functions of the post-curing oven, including the control system and heating system, to ensure that the oven is in a safe state before normal operation. During the self-test process, faults can also be diagnosed and located, allowing potential problems to be discovered and resolved promptly, preventing malfunctions during operation that could affect production efficiency and product quality.

[0070] In one example, method 700 further includes detecting whether there are any unsuccessfully removed products on the transport component during the process of removing the products from the transport component. This detection process is typically implemented by a light detector. For example, if cured products are detected on the transport component during the resetting process of the transport component, this indicates that some products were not successfully removed during the product transfer process. In such cases, timely maintenance of the secondary curing oven is required to prevent damage to the secondary curing oven caused by dropped products.

[0071] In one example, the preset pressure is 8,000 Pa to 10,000 Pa; the preset inflation gas pressure is 100,000 Pa to 110,000 Pa; the secondary curing oven's light source is preheated to 38°C to 40°C, and the preset curing time is 10 minutes. Of course, the oven environmental parameters vary depending on the specific product being printed. For example, the above oven environmental parameters are commonly used for dental models printed with wash-free resins. Other products can have different oven environmental parameters, which are not listed here.

[0072] The control method of the 3D printing secondary curing furnace provided in this embodiment uses an exhaust component to extract other gases in the inner cavity before adding an inert gas (such as nitrogen). On the one hand, a negative pressure is generated in the furnace, which is beneficial to the subsequent charging efficiency of the inert gas; on the other hand, since other gases or impurity gases are extracted, the inert gas content in the furnace is higher, which is beneficial to improving the light curing effect, that is, improving the light curing efficiency.

[0073] Example 3

[0074] Figure 8 is a structural schematic diagram of a control device for a 3D printing secondary curing furnace according to an embodiment of the present invention. Referring to Figure 8, the device 800 mainly includes: a starting module 801, which is used to monitor whether the transmission component is operating normally; when the transmission component is operating normally, the transmission component is started to bring the object to be cured into the secondary curing furnace; a door closing module 802, which is used to close the door of the secondary curing furnace; a gas control module 803, which is used to control the exhaust component to start exhausting, and control the inert gas filling component to fill in the inert gas when the gas pressure in the furnace body or the furnace monomer reaches a preset pressure value; a light starting module 804, which is used to turn on the light source of the secondary curing furnace when the inert gas is injected to a preset pressure; and an ending module 805, which is used to start depressurizing after the preset curing time is completed, and open the furnace door until the pressure is balanced to send the product on the transmission component away.

[0075] In one example, the apparatus 800 may further include a self-test module for controlling the secondary curing oven to perform a power-on self-test.

[0076] In one example, the apparatus 800 may further include a detection module configured to detect whether there are any products on the transport component that have not been successfully transported away during the process of transporting the products on the transport component.

[0077] In one example, the preset pressure value is 8000Pa-10000Pa.

[0078] In one example, the preset pressure of the filling gas is 100,000 Pa to 110,000 Pa.

[0079] In one example, the light source temperature of the secondary curing oven is preheated to 38° C. to 40° C., and the preset curing time is 10 minutes.

[0080] The details of other operations performed by each module in this embodiment can be referred to the aforementioned embodiments and will not be elaborated here.

[0081] The control device of the 3D printing secondary curing furnace provided in this embodiment uses an exhaust component to extract other gases in the inner cavity before adding an inert gas (such as nitrogen). On the one hand, a negative pressure is generated in the furnace, which is beneficial to the subsequent charging efficiency of the inert gas; on the other hand, since other gases or impurity gases are extracted, the inert gas content in the furnace is higher, which is beneficial to enhancing the photocuring effect, that is, improving the photocuring efficiency.

[0082] The control device for a 3D printing secondary curing furnace in the embodiments of the present application can be a device, or a component, integrated circuit, or chip in a terminal. The control device for a 3D printing secondary curing furnace in the embodiments of the present application can be a device having an operating system. The operating system can be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

[0083] The present application also provides an electronic device, comprising: a memory for storing programs or instructions executable by a processor; and a processor for executing the above-mentioned programs or instructions to implement the various processes of the above-mentioned control method embodiment of the 3D printing secondary curing furnace, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0084] Figure 9 is a schematic diagram of an electronic device according to an embodiment of the present invention. Electronic device 900 may include an internal communication bus 901, a processor 902, a read-only memory (ROM) 903, a random access memory (RAM) 904, and a communication port 905. When used in a personal computer, electronic device 900 may also include a hard disk 906. The internal communication bus 901 enables data communication between components of electronic device 900. Processor 902 can make decisions and issue prompts. In some embodiments, processor 902 may be composed of one or more processors. Communication port 905 enables data communication between electronic device 900 and the outside world. In some embodiments, electronic device 900 can send and receive information and data from a network via communication port 905. Electronic device 900 may also include various forms of program storage units and data storage units, such as a hard disk 906, a read-only memory (ROM) 903, and a random access memory (RAM) 904, capable of storing various data files used for computer processing and / or communication, as well as possible programs or instructions executed by processor 902. The result processed by the processor 902 is transmitted to the user equipment through the communication port 905 and displayed on the user interface.

[0085] The above-mentioned control method of the 3D printing secondary curing furnace can be implemented as a computer program, stored in the hard disk 906, and recorded in the processor 902 for execution to implement any control method of the 3D printing secondary curing furnace in this application.

[0086] The embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by the processor, each process of the control method embodiment of the above-mentioned 3D printing secondary curing furnace is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the processor is the processor in the electronic device in the above-mentioned embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0087] The basic concepts have been described above. Obviously, for those skilled in the art, the above invention disclosure is only for example and does not constitute a limitation of this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this application. Such modifications, improvements and corrections are suggested in this application, so such modifications, improvements and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

Claims

1. A 3D printing secondary curing furnace, characterized in that, Including: A furnace unit and a transmission component, wherein the furnace unit includes a housing which has an inlet and an outlet, and furnace doors are provided at both the inlet and the outlet of the housing, and a light source is fixed in the inner cavity of the housing; An air extraction component and an inert gas filling component are provided, and the air extraction component and the inert gas filling component are respectively in gas communication with the inner cavity of the housing; The transmission component is arranged in the inner cavity of the housing, with one end thereof close to the inlet of the housing and the other end close to the outlet of the housing.

2. The 3D printing secondary curing furnace according to claim 1, characterized in that, Two sets of the light sources are fixed in the inner cavity of the housing, and the two sets of light sources are respectively arranged above and below the housing.

3. The secondary curing furnace for 3D printing according to claim 1 or 2, characterized in that A water cooling component is provided at the light source.

4. The 3D printing secondary curing furnace according to claim 1, wherein The furnace door has a sealing ring, one side of the sealing ring is in contact with the furnace door, and the other side of the sealing ring has a notch.

5. The 3D printing secondary curing furnace according to claim 1, wherein, A pressure monitoring component is further provided for monitoring the gas pressure in the furnace unit, and / or a temperature monitoring component for monitoring the real-time temperature in the furnace unit.

6. The 3D printing secondary curing furnace according to claim 1, characterized in that, A light detector is further provided, and the light detector is used for detecting whether there is a material to be cured on the transmission component.

7. The 3D printing secondary curing furnace according to claim 1, wherein On the side of the furnace unit, the gas filling ports of the inert gas filling component are distributed on the left and right sides of the side, and the air extraction ports of the air extraction component are distributed on the upper and lower sides of the side.

8. The 3D printing secondary curing furnace according to claim 1, characterized in that, Including a furnace body which is formed by sequentially splicing a plurality of the furnace units, and the outlet of the previous furnace unit is connected to the inlet of the next furnace unit; The inlet and the outlet of the furnace body are respectively the inlets and outlets of the furnace units at the head and the tail; the first end and the second end of the transmission component are respectively close to the inlet and the outlet of the furnace body.

9. The 3D printing secondary curing furnace according to claim 1, wherein, An inspection door is further provided on the side of the housing.

10. A control method for a 3D printing secondary curing furnace, applied to the secondary curing furnace according to any one of claims 1 to 9, characterized in that, Including: Monitoring whether the transmission component operates normally; When the transmission component operates normally, starting the transmission component to bring the material to be cured into the secondary curing furnace; Closing the furnace door of the secondary curing furnace; Controlling the air extraction component to start air extraction, and then controlling the inert gas filling component to fill inert gas when the gas pressure in the furnace body or the furnace unit is pumped to a preset pressure value; Opening the light source of the secondary curing furnace when the inert gas is injected to the preset pressure; Starting to release pressure after the preset curing time is completed, opening the furnace door when the pressure is balanced, and sending away the product on the transmission component.

11. The control method according to claim 10, wherein, Further including: Controlling the secondary curing furnace to perform a power-on self-check.

12. The control method according to claim 10, wherein During the process of sending away the product on the transmission component, detecting whether there is still an un-successfully sent-away product on the transmission component.

13. The control method according to claim 10, wherein, The preset pressure value is 8000 Pa to 10000 Pa.

14. The control method according to claim 10, characterized in that, The filling gas pressure of the preset pressure is 100000 pa to 110000 Pa.

15. The control method according to claim 10, characterized in that, The light source temperature of the secondary curing furnace is preheated to 38 °C to 40 °C, and the preset curing time is 10 minutes.

16. A control device for a 3D printing secondary curing furnace, characterized in that, Including: A starting module for monitoring whether the transmission component operates normally; When the transmission component operates normally, starting the transmission component to bring the material to be cured into the secondary curing furnace; A door closing module for closing the furnace door of the secondary curing furnace; The air control module is used to control the air extraction component to start air extraction, and when the gas pressure in the furnace body or the furnace single body is pumped to the preset pressure value, then control the inert gas filling component to fill in the inert gas; The light start module is used to turn on the light source of the secondary curing furnace when the inert gas is injected to the preset pressure; The end module is used to start pressure relief after the preset curing time is completed, and open the furnace door until the pressure is balanced, and send away the product on the transmission component.

17. An electronic device, characterized in that, Comprising: A processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the steps of the control method of the 3D printing secondary curing furnace according to any one of claims 10-15 are implemented.

18. A readable storage medium, characterized in that, Programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by the processor, the steps of the control method of the 3D printing secondary curing furnace according to any one of claims 10-15 are implemented.

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