Furan resin sand mixing device of 3D printer

Abstract

The utility model relates to the technical field of 3D printing, in particular to a 3D printer furan resin sand mixing device which comprises a heat preservation box and a stirring box, the stirring box is arranged in the heat preservation box, the top of the stirring box is fixedly connected with a stirring motor, the tail end of a main shaft of the stirring motor is fixedly connected with a stirring shaft, and the side face of the stirring shaft is fixedly connected with a plurality of sets of stirring frames. The bottom of the stirring box is communicated with a conveying pipe, a cooling box is arranged below the conveying pipe, a cooling pump is installed in the cooling box, the output end of the cooling pump is communicated with a cooling pipe, the input end of the cooling pump is communicated with a water tank, the input end of the water tank is communicated with a heat exchanger, and the input end of the heat exchanger is communicated with the cooling pipe; the temperature sensor monitors the temperature of discharged materials all the time, once the temperature exceeds a set value, the external controller controls the cooling pump to be started, the cooling pump can drive water in the water tank to enter the cooling pipe, the materials in the conveying pipe are cooled to a certain degree, and normal use of the materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a furan resin sand mixing device for a 3D printer. Background Art

[0002] 3D sand printers are based on the principle of inkjet printers, ejecting material droplets from a nozzle and solidifying and forming them layer by layer along a certain path. It is necessary to develop 3D printer furan resin mixed sand with performance suitable for the printing nozzle. Even if the technical problem of the furan resin mixed sand ratio is solved, the raw material preparation device also needs to be updated to provide raw materials accurately according to the designed dosage.

[0003] The existing patent application number is CN202023101874.6, which is a 3D printer furan resin sand mixing device. It is arranged in a reactor through a heating mechanism to heat the material, which is convenient for subsequent use. However, during the heating process, it cannot be heated accurately, and the heating temperature often exceeds the preset temperature. The overheated furan resin material will affect the normal use of the material when it is discharged for use. Therefore, a 3D printer furan resin sand mixing device is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a furan resin sand mixing device for a 3D printer to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] As an optional solution of the 3D printer furan resin sand mixing device described in the utility model, wherein: a 3D printer furan resin sand mixing device includes an insulation box, support legs and a mixing box,

[0007] The bottom of the heat preservation box is equipped with multiple groups of legs for supporting the heat preservation box, the interior of the heat preservation box is provided with a stirring box, and the top of the stirring box is fixedly connected to a stirring motor, the end of the main shaft of the stirring motor is fixedly connected to a stirring shaft, and the side of the stirring shaft is fixedly connected to multiple groups of stirring frames;

[0008] The bottom of the mixing box is connected to a material delivery pipe, a cooling box is provided below the material delivery pipe, a cooling pump is installed inside the cooling box, and the output end of the cooling pump is connected to a cooling pipe, the input end of the cooling pump is connected to a water tank, the input end of the water tank is connected to a heat exchanger, and the input end of the heat exchanger is connected to the cooling pipe;

[0009] A temperature sensor for monitoring the temperature of the material inside the feeding pipe is also installed on the outside of the feeding pipe.

[0010] Preferably, a covering tube is provided on the outer side of the feed pipe.

[0011] Preferably, the cooling pipe is spirally arranged on the outside of the material conveying pipe, and the cooling pipe is located between the cladding pipe and the material conveying pipe.

[0012] The existing technology is to set a heating mechanism in the reactor to heat the material, which is convenient for subsequent use. However, during the heating process, it cannot heat accurately, and the heating temperature often exceeds the preset temperature. The overheated furan resin material will affect the normal use of the material when it is discharged for use. During use, the temperature of the discharged material can be monitored at all times by the set temperature sensor. Once the temperature exceeds the set value, the cooling pump is controlled to start by the external controller. At this time, the cooling pump can drive the water inside the water tank into the cooling pipe. At this time, the material inside the feed pipe can be cooled to a certain extent to ensure that the material can be used normally. The water inside the cooling pipe can enter the water tank through the heat exchanger. The heat exchanger can exchange heat with the hot water to ensure its water recycling.

[0013] Preferably, the stirring racks are arranged in three groups, each group of stirring racks is composed of three transverse rods and one vertical rod, and one end of the transverse rods is connected to the vertical rod.

[0014] Preferably, the side of the stirring frame facing away from the stirring shaft is in contact with the inner wall of the stirring box.

[0015] During stirring, the stirring frame rotates and is set in a "mountain" shape. At this time, it can ensure that the material is fully stirred and mixed. One side of the stirring frame is in contact with the stirring box, which prevents the material from adhering to the inner wall of the stirring box and ensures that the material falls.

[0016] Preferably, a heating pipe is provided between the insulation box and the mixing box, and one end of the heating pipe is connected to a hot water pump, the other end of the hot water pump is connected to a heating tank, and the other end of the heating tank is connected to the heating pipe;

[0017] A vertically arranged heater is installed inside the heating tank.

[0018] Preferably, the heating tube is spirally arranged on the outside of the stirring box.

[0019] Preferably, the heating tube is made of copper tube.

[0020] When stirring the material, the stirring motor is started to drive the stirring shaft to rotate, and the stirring shaft drives the stirring frame to rotate. At this time, the stirring frame can fully stir the material and mix the sand. The heating pipe is driven by the hot water pump to circulate hot water through the heating pipe. At this time, it can contact the outer wall of the stirring box, thereby heating the material, ensuring the fluidity of the material, and ensuring that the material can be fully mixed with the sand.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] When the utility model is in use, the temperature of the discharged material can be monitored at all times through the temperature sensor. Once the temperature exceeds the set value, the cooling pump is controlled to start by the external controller. At this time, the cooling pump can drive the water in the water tank into the cooling pipe. At this time, the material in the feed pipe can be cooled to a certain extent to ensure that the material can be used normally.

[0023] The water inside the cooling pipe can enter the water tank through the heat exchanger, and the heat exchanger can heat the hot water to ensure the recycling of the water.

[0024] When stirring the material, the stirring motor is started to drive the stirring shaft to rotate, and the stirring shaft drives the stirring frame to rotate. At this time, the stirring frame can fully stir the material and mix the sand. The heating pipe is driven by the hot water pump to circulate hot water through the heating pipe. At this time, it can contact the outer wall of the stirring box, thereby heating the material, ensuring the fluidity of the material, and ensuring that the material can be fully mixed with the sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a cross-sectional view of the utility model;

[0027] Figure 3 It is a cross-sectional view of the cooling box of the present invention.

[0028] In the figure: 1. Insulation box; 2. Support legs; 3. Mixing box; 4. Mixing motor; 5. Mixing shaft; 6. Mixing frame; 7. Heating pipe; 8. Hot water pump; 9. Heating tank; 10. Heater; 11. Coating pipe; 12. Cooling box; 13. Cooling pump; 14. Water tank; 15. Heat exchanger; 16. Cooling pipe; 17. Feed pipe; 18. Temperature sensor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0030] See also Figure 1 、 Figure 2 and Figure 3 , the utility model provides a technical solution:

[0031] A 3D printer furan resin sand mixing device includes an insulation box 1, support legs 2 and a mixing box 3.

[0032] The bottom of the insulation box 1 is equipped with multiple groups of legs 2 for supporting the insulation box 1. A stirring box 3 is provided inside the insulation box 1, and a stirring motor 4 is fixedly connected to the top of the stirring box 3. The end of the main shaft of the stirring motor 4 is fixedly connected to a stirring shaft 5. The side of the stirring shaft 5 is fixedly connected to multiple groups of stirring frames 6.

[0033] The bottom of the mixing tank 3 is connected to a material delivery pipe 17, and a cooling box 12 is provided below the material delivery pipe 17. A cooling pump 13 is installed inside the cooling box 12, and the output end of the cooling pump 13 is connected to a cooling pipe 16. The input end of the cooling pump 13 is connected to a water tank 14, and the input end of the water tank 14 is connected to a heat exchanger 15, and the input end of the heat exchanger 15 is connected to the cooling pipe 16.

[0034] A temperature sensor 18 is also installed on the outside of the feeding pipe 17 for monitoring the temperature of the material inside the feeding pipe 17 .

[0035] A covering tube 11 is provided on the outer side of the feeding tube 17 .

[0036] The cooling pipe 16 is spirally disposed on the outside of the material delivery pipe 17 , and the cooling pipe 16 is located between the cladding pipe 11 and the material delivery pipe 17 .

[0037] The prior art is to set a heating mechanism in the reactor to heat the material, which is convenient for subsequent use. However, during the heating process, it cannot heat accurately, and the heating temperature often exceeds the preset temperature. The overheated furan resin material will affect the normal use of the material when it is discharged for use. During use, the temperature sensor 18 can be used to monitor the temperature of the discharged material at all times. Once the temperature exceeds the set value, the cooling pump 13 is controlled to start by the external controller. At this time, the cooling pump 13 can drive the water inside the water tank 14 to enter the cooling pipe 16. At this time, the material inside the feed pipe 17 can be cooled to a certain extent to ensure that the material can be used normally. The water inside the cooling pipe 16 can enter the water tank 14 through the heat exchanger 15. The heat exchanger 15 can exchange heat with the hot water to ensure its water circulation.

[0038] In this embodiment, when the material is stirred and mixed with sand, the stirring motor 4 is started to drive the stirring shaft 5 to rotate, and the stirring shaft 5 drives the stirring frame 6 to rotate, thereby achieving the purpose of stirring and mixing the material. The cooling pipe 16 is spirally arranged, which increases the contact area with the feed pipe 17, thereby achieving effective cooling of the overheated material and ensuring its use quality. When the material is transported, it is transported by an external existing extraction equipment. Example

[0039] This embodiment is an improvement on embodiment 1. Figure 2 Specifically, the stirring racks 6 are arranged in three groups, and each group of stirring racks 6 is composed of three transverse rods and one vertical rod, and one end of the transverse rods is connected to the vertical rod.

[0040] The side of the stirring frame 6 facing away from the stirring shaft 5 is in contact with the inner wall of the stirring box 3 .

[0041] During stirring, the stirring frame 6 rotates and is arranged in a "mountain" shape. At this time, it can ensure that the material is fully stirred and mixed. One side of the stirring frame 6 is in contact with the stirring box 3. At this time, the material is prevented from adhering to the inner wall of the stirring box 3 and the material is ensured to fall. Example

[0042] This embodiment is an improvement on embodiment 2. Figure 1 Specifically, a heating pipe 7 is provided between the insulation box 1 and the mixing box 3, and one end of the heating pipe 7 is connected to a hot water pump 8, the other end of the hot water pump 8 is connected to a heating tank 9, and the other end of the heating tank 9 is connected to the heating pipe 7;

[0043] A vertically arranged heater 10 is installed inside the heating tank 9 .

[0044] The heating tube 7 is spirally arranged on the outside of the stirring box 3 .

[0045] The heating tube 7 is made of copper tube.

[0046] When the material is stirred, the stirring motor 4 is started to drive the stirring shaft 5 to rotate, and the stirring shaft 5 drives the stirring frame 6 to rotate. At this time, the stirring frame 6 can fully stir and mix the material, and the heating pipe 7 is provided, which drives hot water to circulate through the heating pipe 7 through the hot water pump 8. At this time, it can contact the outer wall of the stirring box 3, thereby heating the material, ensuring the fluidity of the material, and ensuring that the material is fully mixed.

[0047] In this embodiment, when the water flows, when the water passes through the heating tank 9, the heater 10 is used to heat the water inside the heating tank 9, ensuring that the hot water passes through the heating tube 7 and then heats the material inside the mixing box 3, ensuring the fluidity of the material, and the heating tube 7 is spirally arranged, which increases the contact area with the mixing box 3, ensuring the heating quality of the material, and the heating tube 7 is arranged as a copper tube, which has a good heat dissipation effect.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furan resin sand mixing device for a 3D printer, characterized by: It includes an insulation box (1), supporting legs (2) and a mixing box (3), The bottom of the heat preservation box (1) is equipped with a plurality of legs (2) for supporting the heat preservation box (1), a stirring box (3) is provided inside the heat preservation box (1), and a stirring motor (4) is fixedly connected to the top of the stirring box (3), a stirring shaft (5) is fixedly connected to the end of the main shaft of the stirring motor (4), and a plurality of stirring frames (6) are fixedly connected to the side of the stirring shaft (5); A heating pipe (7) is provided between the heat preservation box (1) and the stirring box (3), and one end of the heating pipe (7) is connected to a hot water pump (8), the other end of the hot water pump (8) is connected to a heating tank (9), and the other end of the heating tank (9) is connected to the heating pipe (7); A vertically arranged heater (10) is installed inside the heating tank (9); The bottom of the mixing box (3) is connected to a feed pipe (17), a cooling box (12) is provided below the feed pipe (17), a cooling pump (13) is installed inside the cooling box (12), and the output end of the cooling pump (13) is connected to a cooling pipe (16), the input end of the cooling pump (13) is connected to a water tank (14), the input end of the water tank (14) is connected to a heat exchanger (15), and the input end of the heat exchanger (15) is connected to the cooling pipe (16); A temperature sensor (18) for monitoring the temperature of the material inside the material delivery pipe (17) is also installed on the outside of the material delivery pipe (17).

2. A 3D printer furan resin sand mixing device according to claim 1, characterized in that: A covering tube (11) is provided on the outer side of the material delivery tube (17).

3. A furan resin sand mixing device for a 3D printer according to claim 1, characterized in that: The stirring racks (6) are arranged in three groups, and each group of stirring racks (6) is composed of three transverse rods and one vertical rod, and one end of each transverse rod is connected to the vertical rod.

4. A furan resin sand mixing device for a 3D printer according to claim 1, characterized in that: The side of the stirring frame (6) facing away from the stirring shaft (5) is in contact with the inner wall of the stirring box (3).

5. A furan resin sand mixing device for a 3D printer according to claim 1, characterized in that: The heating tube (7) is spirally arranged on the outside of the stirring box (3).

6. A furan resin sand mixing device for a 3D printer according to claim 1, characterized in that: The heating tube (7) is made of a copper tube.

7. The furan resin sand mixing device for a 3D printer according to claim 1, characterized in that: The cooling pipe (16) is spirally arranged on the outside of the material delivery pipe (17), and the cooling pipe (16) is located between the cladding pipe (11) and the material delivery pipe (17).

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