Multi-cycle heating integrated system assembly for cavity of 3D printer

Abstract

The utility model discloses a 3D printer chamber multi-cycle heating integrated system assembly, and relates to the technical field of 3D printers, the 3D printer chamber multi-cycle heating integrated system assembly comprises a flow valve body, the upper end of the flow valve body is communicated with a turbofan, the turbofan is electrically connected with a master control circuit board, the output end of the side surface of the flow valve body is communicated with an exhaust purification box, and the exhaust purification box is electrically connected with the master control circuit board. The output end of the bottom of the flow valve body communicates with a ventilation pipeline, a switching mechanism is arranged in the flow valve body, and a heating mechanism is arranged at the end of the ventilation pipeline. The utility model relates to an intelligent integrated assembly with various control logics and an independent control system. In the aspect of hardware structure, the whole assembly is more compact, the modularization integration level is higher, in the aspect of functions, the assembly is provided with an independent control system, the occupation of temperature control on the computing power of a main control board is greatly reduced, and meanwhile, the overall power consumption of the printer is effectively reduced through various circulating temperature control logics.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, specifically a 3D printer chamber multi-circulation heating integrated system component. Background Technology

[0002] 3D printing, a type of rapid prototyping technology, is a method of creating three-dimensional objects by printing layer by layer using special waxes or plastics based on digital model files. Currently, most 3D printers with encapsulation and chamber heating functions use independent chamber heating and cooling systems as well as air purification components. These multiple components increase the power consumption of the equipment, and their complexity and space occupation within the chamber result in a low "cost-performance ratio" in terms of print size and overall dimensions. Furthermore, the connection and control of these multiple components are complex, requiring more mainboard control units, leading to higher production and assembly costs.

[0003] Based on this, a multi-cycle heating integrated system component for a 3D printer chamber is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a multi-cycle heating integrated system component for 3D printer chambers. The functions of this multi-cycle heating integrated system component are as follows: Structurally, the component has higher integration, less thickness, and occupies less space; the hidden air inlet design is more aesthetically pleasing. Functionally, the component achieves heat dissipation and multiple heating cycle modes within the chamber. Compared to multiple components and main control, it consumes less power and reduces the computing power requirements of the motherboard control unit and the number of power supply units. Overall production costs are reduced. The component has multiple built-in PID control modes, requiring fewer control interfaces and reducing the operating load on the system. This makes this example easy to install and debug, widely compatible with various 3D printer systems, supporting, but not limited to, Marlin, Klipper, and RRF.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A 3D printer chamber multi-circulation heating integrated system component includes a flow valve body. A turbine fan is connected to the upper end of the flow valve body. The input end of the turbine fan is connected to the inside of the air inlet box. The turbine fan is fixedly connected to the air inlet box by several screws. A main control circuit board is fixedly installed on one side of the air inlet box. The turbine fan is electrically connected to the main control circuit board. An exhaust purification box is connected to the output end of the flow valve body. A ventilation duct is connected to the bottom output end of the flow valve body. A switching mechanism for switching the operation of different output ends is provided inside the flow valve body. A heating mechanism for heating and temperature rise is provided at the end of the ventilation duct.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0008] In one alternative embodiment: the switching mechanism includes a valve plate disposed inside the flow valve body and fixedly mounted on a fixed shaft. The two ends of the fixed shaft are respectively rotatably disposed in rotating holes on both sides of the flow valve body. A driven gear is fixedly mounted on the fixed shaft, and a driving gear meshes with the driven gear. The driving gear is fixedly mounted on the output end of a servo motor. The servo motor is mounted at the bottom end of the flow valve body and is electrically connected to the main control circuit board.

[0009] In one alternative embodiment: the heating mechanism includes a PTC heater, which is installed inside the heating housing. The heating housing is connected to the output end of the PTC heater, and the PTC heater is electrically connected to the main control circuit board.

[0010] In one alternative: an air filter is installed inside the air inlet box, and an air inlet cover is installed on the upper end of the air inlet box.

[0011] In one alternative: an activated carbon filter element is installed inside the exhaust purification box, and an installation groove is provided on one side of the exhaust purification box, with a sealing strip installed in the installation groove.

[0012] In one alternative: the connection points between the flow valve body and the turbine fan, ventilation duct, and exhaust purification box are all sealed with adhesive.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention is an intelligent integrated component with multiple control logics and an independent control system. Compared to traditional independent components for printer chamber heating and cooling, the component has a more compact overall hardware structure, higher modular integration, fewer parts, and a lighter overall weight. Pre-assembly significantly improves production efficiency and reduces production costs. Functionally, this component features an independent control system, greatly reducing the computational burden on the main control board for temperature control, and effectively reducing the printer's overall power consumption through multiple cyclic temperature control logics. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation of this utility model on the equipment.

[0016] Figure 2 This is a schematic diagram of the overall assembly of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the flow valve body of this utility model.

[0018] Figure 4 This is an exploded view of the present invention.

[0019] Figure label annotations: 11 Air inlet cover, 12 Air filter, 13 Flow valve body, 14 Screw, 15 Turbine fan, 16 Valve plate, 17 Servo motor, 18 Activated carbon filter, 19 Sealing strip, 20 Heating shell, 21 PTC heater, 22 Ventilation duct, 23 Exhaust purification box, 24 Main control circuit board, 25 Air inlet box. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] In one embodiment, such as Figures 1-4 As shown, a 3D printer chamber multi-circulation heating integrated system component includes a flow valve body 13. A turbine fan 15 is connected to the upper end of the flow valve body 13. The input end of the turbine fan 15 is connected to the inside of the air inlet box 25. The turbine fan 15 is fixedly connected to the air inlet box 25 by several screws 14. A main control circuit board 24 is fixedly installed on one side of the air inlet box 25. The turbine fan 15 is electrically connected to the main control circuit board 24. An exhaust purification box 23 is connected to the side output end of the flow valve body 13. A ventilation duct 22 is connected to the bottom output end of the flow valve body 13. A switching mechanism for switching the operation of different output ends is provided inside the flow valve body 13. A heating mechanism for heating is provided at the end of the ventilation duct 22. The switching mechanism facilitates switching between the two output ends of the flow valve body 13 according to the temperature, and the heating mechanism facilitates heating.

[0022] The switching mechanism includes a valve plate 16, which is disposed inside the flow valve body 13. The valve plate 16 is fixedly mounted on a fixed shaft, and the two ends of the fixed shaft are respectively rotatably disposed in the rotating holes on both sides of the flow valve body 13. A driven gear is fixedly mounted on the fixed shaft, and a driving gear is meshed on the driven gear. The driving gear is fixedly mounted on the output end of a servo motor 17. The servo motor 17 is mounted at the bottom end of the flow valve body 13 and is electrically connected to the main control circuit board 24. In use, when it is necessary to switch the working output end of the flow valve body 13, the servo motor 17 is started by controlling the main control circuit board 24. The output end of the servo motor 17 drives the valve plate 16 to rotate at a fixed angle through the meshing of the driving gear and the driven gear, thereby sealing one output end and opening the other output end.

[0023] The heating mechanism includes a PTC heater 21, which is installed inside the heating housing 20. The heating housing 20 is connected to the output end of the PTC heater 21. The PTC heater 21 is electrically connected to the main control circuit board 24. In use, when it is necessary to increase the internal temperature of the chamber, the output end of the flow valve body 13 connected to the ventilation duct 22 is opened, and the other output end of the flow valve body 13 is closed. Then, the turbine fan 15 delivers gas into the flow valve body 13. The flow valve body 13 delivers the gas to the inside of the heating housing 20 through the ventilation duct 22. The PTC heater 21 heats the gas, thereby increasing the internal temperature of the chamber.

[0024] An air filter element 12 is installed inside the air inlet box 25, and an air inlet cover plate 11 is installed on the upper end of the air inlet box 25, which facilitates the filtration of the gas entering the flow valve body 13 during use.

[0025] The exhaust purification box 23 is equipped with an activated carbon filter element 18. An installation groove is provided on one side of the exhaust purification box 23, and a sealing strip 19 is provided in the installation groove. In use, the sealing strip 19 can easily fix the activated carbon filter element 18, and the activated carbon filter element 18 can filter the exhaust gas.

[0026] The connection points of the flow valve body 13 with the turbine fan 15, ventilation duct 22 and exhaust purification box 23 are all sealed with glue to enhance the sealing effect at the connection points during use.

[0027] The above embodiment discloses a multi-cycle heating integrated system component for a 3D printer chamber. The host computer on the main control circuit board 24 controls the component's switching and temperature regulation via two sets of high and low voltage levels. Temperature regulation adjusts the opening and closing of the valve 16 and the heating power of the PTC heater 21 based on the real-time temperature. The host computer's two control ports (A and B) are connected to the component's two input ports. When the component detects both A and B as high, it starts; when it detects both A and B as low, it shuts down. When A is high and B is low, the component begins receiving temperature data and detects the number of times A and B simultaneously switch between high and low voltage levels. Each high-level detection is recorded as 5 degrees Celsius. If the set temperature is lower than the current real-time temperature, the component does not perform any action.

[0028] During use, the temperature and humidity of the air inside the air inlet box 25 are directly detected by the temperature and humidity probe on the main control circuit board 24, thereby adjusting the angle of the valve plate 16 and the power of the heater of the air inlet cover plate 11. When the set temperature is 50 degrees Celsius and the real-time temperature is 23 degrees Celsius in the exhaust air purification box, the servo motor 17 starts and controls the valve plate 16 to switch to internal circulation, that is, the channel to the exhaust air purification box is closed, and the air can only go to the ventilation duct of the PTC heater 21. At the same time, the turbine fan 15 and the PTC heater 21 are started to run at full power.

[0029] When the real-time temperature reaches 47 degrees Celsius, which is close to the set temperature, within -3 degrees Celsius, the turbine fan 15 and PTC heater 21 will operate at a constant low power and switch to valve plate 16 control. The flow rate of exhaust gas and heating gas is controlled by PID algorithm, thereby controlling the temperature inside the chamber.

[0030] When the real-time temperature reaches 52 degrees Celsius, exceeding the set temperature by 2 degrees Celsius, the component will switch the control logic, shut down the PTC heater 21, and use the PID algorithm to control the flow rate of internal and external circulation through the valve plate 16, thereby controlling the chamber temperature.

[0031] When the real-time temperature reaches 55 degrees Celsius, exceeding the set temperature by 5 degrees, the component will assume that simply controlling the internal and external circulation with low wind speed cannot control the chamber temperature. This is because the heated bed and extruder of the 3D printer itself will heat the chamber environment. Therefore, the control logic will be switched, and the servo motor 17 will control the valve plate 16 to completely close the internal circulation. The PID algorithm will be used to control the speed of the turbine fan to increase the exhaust of hot air and reduce the chamber temperature.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A 3D printer chamber multi-cycle heating integrated system assembly, comprising a flow valve body (13), a turbine fan (15) is arranged on the upper end of the flow valve body (13) in communication, the input end of the turbine fan (15) is in communication with the inside of an air inlet box (25), and the turbine fan (15) is fixedly connected with the air inlet box (25) through a plurality of screws (14), characterized in that, The air inlet box (25) is fixed with a main control circuit board (24) on one side, the turbine fan (15) is electrically connected with the main control circuit board (24), the air outlet purification box (23) is communicated with the side output end of the flow valve body (13), the ventilation duct (22) is communicated with the bottom output end of the flow valve body (13), the flow valve body (13) is internally provided with a switching mechanism for switching different output ends, and the ventilation duct (22) is provided with a heating mechanism for heating.

2. The 3D printer chamber multi-cycle heating integrated system assembly of claim 1, wherein, The switching mechanism comprises a valve piece (16), the valve piece (16) is arranged in the flow valve body (13), the valve piece (16) is fixed on a fixed shaft, the fixed shaft is rotatably arranged in the rotating holes on both sides of the flow valve body (13), a driven gear is fixed on the fixed shaft, a driving gear is engaged on the driven gear, the driving gear is fixed on the output end of a servo motor (17), the servo motor (17) is installed at the bottom end of the flow valve body (13), and the servo motor (17) is electrically connected with the main control circuit board (24).

3. The 3D printer chamber multi-cycle heating integrated system assembly of claim 1, wherein, The heating mechanism comprises a ptc heater (21), the ptc heater (21) is installed in the heating shell (20), the heating shell (20) is communicated with the output end of the ptc heater (21), and the ptc heater (21) is electrically connected with the main control circuit board (24).

4. The 3D printer chamber multi-cycle heating integrated system assembly of claim 1, wherein, The air inlet box (25) is internally matched with an air filter (12), and the air inlet box (25) is provided with an air inlet cover plate (11) on the upper end.

5. The 3D printer chamber multi-cycle heating integrated system assembly of claim 1, wherein, The air outlet purification box (23) is internally matched with an activated carbon filter (18), one side of the air outlet purification box (23) is provided with a mounting groove, and the mounting groove is matched with a sealing strip (19).

6. The 3D printer chamber multi-cycle heating integrated system assembly of claim 1, wherein, The flow valve body (13) is sealed by smearing glue at the connection positions of the turbine fan (15), the ventilation duct (22) and the air outlet purification box (23).

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