A heating drying mechanism

Abstract

The utility model discloses a kind of heating drying mechanism, for D printer, heating drying mechanism includes three-way, switching valve, hose, heater and air blower, three-way is locked on the print head of D printer, three-way is provided with air inlet, left air outlet and right air outlet, air inlet is connected air blower with heater by hose, left air outlet and right air outlet are respectively arranged in the left and right sides of print head, switching valve is installed on three-way, control left air outlet or right air outlet downward air outlet, heating drying mechanism further includes heating plate, controller and temperature probe installed in D printer, temperature probe is connected with heating plate through controller. The utility model proposes a kind of heating drying mechanism, accelerates sizing, prevents product collapse deformation.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a heating and drying mechanism. Background Technology

[0002] Existing 3D printers for printing ceramic products include a print head, a heating and drying mechanism, a mold, and a drive mechanism. The print head is located on the upper side of the mold. During printing, the drive mechanism drives the print head to move along the mold from left to right or from right to left. The print head squeezes the slurry downwards onto the upper side of the mold. The heating and drying mechanism heats and dries the slurry on the mold to accelerate slurry setting. The existing heating and drying mechanism consists of a ventilation device and a heating device. The heating device raises the internal temperature of the printer, while the ventilation device enhances air convection inside the printer. This method has low drying efficiency and slow slurry setting, especially when printing a rotating mold. If the slurry setting speed is slow, it can cause the product to collapse and deform. Utility Model Content

[0003] To address the shortcomings of low efficiency and slow slurry setting in existing 3D printer heating and drying mechanisms, this invention proposes a heating and drying mechanism that accelerates slurry setting and prevents product collapse and deformation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A heating and drying mechanism for a 3D printer includes a T-junction, a switching valve, a hose, a heater, and a blower. The T-junction is locked onto the print head of the 3D printer and has an air inlet, a left air outlet, and a right air outlet. The air inlet is connected to the blower via the hose and the heater. The left and right air outlets are respectively located on the left and right sides of the print head. The switching valve is installed on the T-junction to control the left or right air outlet to discharge air downwards. The heating and drying mechanism also includes a heating plate, a controller, and a temperature probe installed inside the 3D printer. The temperature probe is connected to the heating plate via the controller.

[0005] With the above settings, firstly, the T-junction on the print head can output hot air downwards to accelerate the drying of the ink extruded from the print head, speed up ink setting, and prevent ink deformation and collapse. Secondly, the T-junction uses a single-sided air outlet for heating and drying, saving energy. Thirdly, the heating plate raises the internal temperature of the 3D printer, allowing the ink on the 3D printer's mold to dry slowly afterwards, further reducing cracking and deformation.

[0006] Furthermore, the heating and drying mechanism also includes a left nozzle, a left locking component, a right nozzle, and a right locking component. The upper end of the left nozzle is vertically slidably connected to the left air outlet and locked by the left locking component. The upper end of the right nozzle is vertically slidably connected to the right air outlet and locked by the right locking component.

[0007] The above settings make it easier to control the distance between the hot air vent and the mold, so as to control the air pressure on the slurry surface and reduce slurry deformation.

[0008] Furthermore, the left and right locking parts are threaded. The left locking part is threadedly connected to the left side of the tee and abuts against the left nozzle, while the right locking part is threadedly connected to the right side of the tee and abuts against the right nozzle.

[0009] With the above settings, tightening the left and right locking parts will lock the left and right nozzles, and loosening the left and right locking parts will release the left and right nozzles.

[0010] Furthermore, the lower ends of the left and right nozzles are widened.

[0011] The above settings can expand the range of hot air radiation output from the left and right nozzles. On the other hand, they can reduce the air pressure output from the left and right nozzles, thereby reducing the deformation of the unformed slurry.

[0012] Furthermore, the switching valve includes a valve core and a motor. The valve core is rotatably connected in a three-way valve. An air duct is provided in the valve core. The motor is connected to the valve core. When air is discharged from the left air outlet, the air duct is offset from the right air outlet. The air inlet is connected to the left air outlet through the air duct. When air is discharged from the right air outlet, the air duct is offset from the left air outlet. The air inlet is connected to the right air outlet through the air duct.

[0013] With the above settings, the motor drives the valve core to switch the output direction of hot air.

[0014] Furthermore, there are two heating plates, which are respectively installed on the inner walls of the left and right sides of the 3D printer.

[0015] The above settings improve the temperature uniformity on both the left and right sides inside the 3D printer.

[0016] Furthermore, the hose is made of silicone.

[0017] The above settings improve the heat resistance of the hose. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the heating and drying mechanism in an embodiment.

[0019] Figure 2 This is a partially enlarged view of the heating and drying mechanism in an embodiment.

[0020] Figure 3 This is a schematic diagram of the printhead moving to the right in an embodiment.

[0021] Figure 4 This is a schematic diagram of the print head moving to the left in an embodiment. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0023] like Figures 1 to 4 A heating and drying mechanism for a 3D printer is disclosed. The heating and drying mechanism includes a T-junction 3, a switching valve, a hose 4, a heater 5, and a blower 6. The T-junction 3 is locked onto the print head 10 of the 3D printer. The T-junction 3 is provided with an air inlet 7, a left air outlet 8, and a right air outlet 9. The air inlet 7 is connected to the blower 6 via the hose 4 and the heater 5. The left air outlet 8 and the right air outlet 9 are respectively located on the left and right sides of the print head 10. The switching valve is installed on the T-junction 3 to control the left air outlet 8 or the right air outlet 9 to blow air downwards. The heating and drying mechanism also includes a heating plate 11 installed inside the 3D printer, a controller (not shown in the figure), and a temperature probe 12. The temperature probe 12 is connected to the heating plate 11 via the controller.

[0024] With the above settings, firstly, the T-junction 3 on the print head 10 can output hot air downwards to accelerate the drying of the slurry extruded from the print head 10, speed up the slurry setting, and prevent the slurry from deforming and collapsing. Secondly, the T-junction 3 adopts a single-sided air outlet method for heating and drying, saving energy. Thirdly, the heating plate 11 raises the internal temperature of the 3D printer, so that the slurry on the mold of the 3D printer can be dried slowly in the future, further reducing cracking and deformation.

[0025] Specifically, the heating and drying mechanism of this application is used in a 3D printer, such as a 3D printer for printing ceramic products. The main body of the 3D printer can refer to existing 3D printers, which includes a print head 10, a cabinet 20, a drive mechanism, a screw extruder, and a mold 21. The print head 10 is located on the upper side of the mold. Under the action of the screw extruder, it squeezes the slurry downwards onto the upper side of the mold. The T-joint 3 is locked to the print head 10 by a clamp or fastener and moves with the print head 10. When printing a product, the print head 10 squeezes the slurry downwards. The drive mechanism drives the print head 10 to reciprocate left and right and rotate with the mold to finally wrap the slurry on the mold, completing the product printing. During the printing process, such as Figure 3 When the print head 10 moves to the right, it continuously squeezes the ink onto the mold. The new ink on the left side of the print head 10 has high humidity and is prone to deformation and flow. The blower 6 sends air to the tee 3 through the heater 5. The heater 5 heats the airflow to form hot air. The hot air enters the tee 3 through the air inlet 7 and is output downward through the left air outlet 8 on the left side of the print head 10, blowing onto the ink that has just been squeezed onto the mold to accelerate the ink setting. At this time, the right air outlet 9 on the right side of the print head 10 does not blow air. On the one hand, this saves energy, and on the other hand, it prevents the previously printed ink on the right side of the print head 10 from overheating and cracking. Similarly, as Figure 4When the print head 10 moves to the left, the left air outlet 8 on the left side of the print head 10 stops blowing air, while the right air outlet 9 on the right side of the print head 10 blows air to quickly solidify the slurry on the right side of the print head 10. In addition, the temperature probe 12 monitors the ambient temperature inside the 3D printer in real time. The controller receives the temperature data. When the ambient temperature is below 40 degrees Celsius, the controller controls the heating plate 11 to work to raise the ambient temperature inside the 3D printer. When the ambient temperature rises to 45 degrees Celsius, the heating plate 11 is turned off, and so on, so that the ambient temperature inside the 3D printer fluctuates stably between 40 and 45 degrees Celsius. This allows the slurry on the mold that is not within the radiation range of the left air outlet 8 and the right air outlet 9 to be heated and dried slowly and evenly, further reducing slurry deformation and cracking.

[0026] As one implementation method, the heating and drying mechanism also includes a left nozzle 13, a left locking member 14, a right nozzle 15 and a right locking member 16. The upper end of the left nozzle 13 is vertically slidably connected to the left air outlet 8 and locked by the left locking member 14. The upper end of the right nozzle 15 is vertically slidably connected to the right air outlet 9 and locked by the right locking member 16.

[0027] The above settings make it easier to control the distance between the hot air vent and the mold, so as to control the air pressure on the slurry surface and reduce slurry deformation.

[0028] During 3D printing, the print head 10 moves under the action of the drive mechanism. The distance between the print head 10 and the mold remains basically unchanged. That is, the print head 10 prints along the mold from left to right. The hot air in the left air outlet 8 is output downward through the left nozzle 13, and the hot air in the right air outlet 9 is output downward through the right nozzle 15. The left locking member 14 and the right locking member 16 release the left nozzle 13 and the right nozzle 15, and the height of the left nozzle 13 and the right nozzle 15 can be adjusted up and down to make the distance between the left nozzle 13 and the right nozzle 15 and the mold appropriate. After the adjustment is completed, the left locking member 14 and the right locking member 16 relock the left nozzle 13 and the right nozzle 15 to fix the height of the left nozzle 13 and the right nozzle 15.

[0029] In one implementation, the left locking member 14 and the right locking member 16 are threaded. The left locking member 14 is threaded to the left side of the tee 3 and abuts against the left nozzle 13. The right locking member 16 is threaded to the right side of the tee 3 and abuts against the right nozzle 15.

[0030] With the above settings, tightening the left locking part 14 and the right locking part 16 will lock the left nozzle 13 and the right nozzle 15, and loosening the left locking part 14 and the right locking part 16 will release the left nozzle 13 and the right nozzle 15.

[0031] As one implementation method, the lower ends of the left nozzle 13 and the right nozzle 15 are flared.

[0032] The above settings can expand the range of hot air radiation output from the left nozzle 13 and the right nozzle 15. On the other hand, they can reduce the air pressure output from the left nozzle 13 and the right nozzle 15, thereby reducing the deformation of the slurry that has not yet been shaped.

[0033] As one implementation, the switching valve includes a valve core 17 and a motor 18. The valve core 17 is rotatably connected in the three-way valve 3. An air duct 19 is provided in the valve core 17. The motor 18 is connected to the valve core 17. When air is discharged from the left air outlet 8, the air duct 19 is offset from the right air outlet 9. The air inlet 7 is connected to the left air outlet 8 through the air duct 19. When air is discharged from the right air outlet 9, the air duct 19 is offset from the left air outlet 8. The air inlet 7 is connected to the right air outlet 9 through the air duct 19.

[0034] With the above settings, motor 18 drives valve core 17 to switch the output direction of hot air.

[0035] The valve core 17 of this application is basically circular, with the two ends of the air duct 19 corresponding to a central angle of 120 degrees. The air inlet 7 is located on the upper side of the valve core 17, and the left air outlet 8 and right air outlet 9 are located on the left and right sides of the valve core 17, respectively. Figure 3 One end of the air duct 19 is connected to the air inlet 7, and the other end of the air duct 19 is connected to the left air outlet 8, so as to realize the connection between the air inlet 7 and the left air outlet 8 and facilitate the air outlet 8 to discharge air. Similarly, the motor 18 drives the valve core 17 to rotate 120 degrees clockwise. One end of the air duct 19 is connected to the air inlet 7, and the other end of the air duct 19 is connected to the right air outlet 9, so as to realize the connection between the air inlet 7 and the right air outlet 9 and facilitate the air outlet 9 to discharge air.

[0036] As one implementation method, two heating plates 11 are provided, which are respectively set on the inner walls of the left and right sides of the 3D printer.

[0037] The above settings improve the temperature uniformity on both the left and right sides inside the 3D printer.

[0038] As one implementation method, the hose 4 is made of silicone.

[0039] The above settings improve the heat resistance of hose 4.

[0040] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A heating and drying mechanism for a 3D printer, characterized in that, The heating and drying mechanism includes a T-junction, a switching valve, a hose, a heater, and a blower. The T-junction is locked onto the print head of the 3D printer. The T-junction is provided with an air inlet, a left air outlet, and a right air outlet. The air inlet is connected to the blower via the hose and the heater. The left and right air outlets are respectively located on the left and right sides of the print head. The switching valve is installed on the T-junction to control the left or right air outlet to discharge air downwards. The heating and drying mechanism also includes a heating plate, a controller, and a temperature probe installed inside the 3D printer. The temperature probe is connected to the heating plate via the controller.

2. The heating and drying mechanism according to claim 1, characterized in that, The heating and drying mechanism also includes a left nozzle, a left locking component, a right nozzle, and a right locking component. The upper end of the left nozzle is vertically slidably connected to the left air outlet and locked by the left locking component. The upper end of the right nozzle is vertically slidably connected to the right air outlet and locked by the right locking component.

3. The heating and drying mechanism according to claim 2, characterized in that, The left and right locking components are threaded. The left locking component is threaded to the left side of the tee and abuts against the left nozzle. The right locking component is threaded to the right side of the tee and abuts against the right nozzle.

4. The heating and drying mechanism according to claim 3, characterized in that, The lower ends of the left and right nozzles are flared.

5. A heating and drying mechanism according to claim 3, characterized in that, The switching valve includes a valve core and a motor. The valve core is rotatably connected in a three-way valve. An air duct is provided in the valve core. The motor is connected to the valve core. When air is discharged from the left air outlet, the air duct is offset from the right air outlet. The air inlet is connected to the left air outlet through the air duct. When air is discharged from the right air outlet, the air duct is offset from the left air outlet. The air inlet is connected to the right air outlet through the air duct.

6. The heating and drying mechanism according to claim 1, characterized in that, Two heating plates are provided, which are respectively installed on the inner walls of the left and right sides of the 3D printer.

7. The heating and drying mechanism according to claim 1, characterized in that, The hose is made of silicone.

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