Cooling device for liquid metal 3D printing

Abstract

The utility model relates to the technical field of cooling equipment, and discloses a cooling device for liquid metal 3D printing, which comprises a placing frame, a connecting pipe fixedly arranged in the rear end of the placing frame, a fan fixedly arranged at the upper end of the connecting pipe, and a condenser fixedly arranged in the connecting pipe at the lower end of the fan. A plurality of heat dissipation holes are formed in the middle of the front end of the connecting pipe, flow guide structures are arranged on the two sides of the front end of the connecting pipe and comprise flow guide pipes fixedly installed on the two sides of the front end of the connecting pipe, and flow dividing holes are formed in the sides, close to each other, of the two flow guide pipes; second ventilation grooves are formed in the two sides of the containing frame. According to the cooling device for liquid metal 3D printing, loss of heat entering the upper end can be accelerated, and the cooling effect is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling equipment, in particular to a cooling device for liquid metal 3D printing. Background Technique

[0002] 3D printing technology is an additive manufacturing technology. Based on the principle of discretization and stacking, according to the digital model of an object, a three-dimensional entity is formed by the method of layer-by-layer material stacking. It can use molten materials for continuous stacking to quickly manufacture complex shapes, with great design freedom. During the 3D printing process, cooling is an important factor that affects the printing quality and the strength of the finished product.

[0003] The patent with the publication number CN216325103U discloses a cooling device for liquid metal 3D printing. The device can meet the rapid cooling of high-temperature melts and large-size samples by setting a main cooling body and a heat conduction plate, avoiding the problem that the grain growth caused by too high temperature affects the mechanical properties of the material.

[0004] However, when the device cools the heat on the substrate, the heat at the upper end of the substrate cannot circulate. It can only achieve temperature reduction by contacting the heat with the cooling pipe, and it is impossible to quickly cool the large area at the upper end of the substrate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cooling device for liquid metal 3D printing to solve the problem that the heat at the upper end of the substrate of the existing device cannot circulate, and it can only achieve temperature reduction by contacting the heat with the cooling pipe, and it is impossible to quickly cool the large area at the upper end of the substrate.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A cooling device for liquid metal 3D printing, including a placement frame. A connecting pipe is fixedly arranged inside the rear end of the placement frame. A fan is fixedly arranged at the upper end of the connecting pipe. A condenser is fixedly arranged inside the connecting pipe below the fan. A plurality of heat dissipation holes are opened in the middle of the front end of the connecting pipe. Flow guiding structures are arranged on both sides of the front end of the connecting pipe. The flow guiding structures include flow guiding pipes fixedly installed on both sides of the front end of the connecting pipe. A diversion hole is opened on one side where the two groups of flow guiding pipes are close to each other. A first ventilation groove is opened at the front end of the placement frame. Second ventilation grooves are opened on both sides of the placement frame.

[0007] Preferably, a disassembly structure is installed between the flow guiding pipe and the connecting pipe. The disassembly structure includes threaded pipes fixedly arranged on both sides of the front end of the connecting pipe. The rear end of the flow guiding pipe is threadedly connected to the threaded pipe.

[0008] Preferably, a protective frame is fixedly arranged at the upper end of the fan, a filter net is fixedly arranged on the inner wall of the protective frame, a convex column is fixedly arranged at the lower end of the protective frame, and a corresponding reserved hole is arranged on the upper end of the fan located at the lower end of the convex column.

[0009] Preferably, mounting plates are fixedly arranged on both sides of the placing frame, and mounting holes are arranged inside the mounting plates.

[0010] Preferably, the filter net is made of non-woven cotton.

[0011] Preferably, a screw rod is fixedly arranged at the upper end of the connecting pipe, and the upper end of the screw rod passes through both sides of the fan and is threadedly installed with a nut.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1) By arranging a diversion structure, the placing frame is placed on the printing substrate. When the air source passes through the heat dissipation holes and the diversion pipes, the air source can blow the residual heat on the substrate forward, thereby realizing the rapid loss of the heat at the upper end of the substrate and accelerating the cooling efficiency.

[0014] 2) Through the disassembly structure, the diversion pipe and the connecting pipe can be quickly disassembled, thereby realizing the replacement of the diversion pipe in the later stage and relatively reducing the disassembly difficulty of the operators.

[0015] 3) By arranging two groups of second ventilation grooves, when the air sources inside the two groups of diversion pipes blow relatively through the shunt pipes, the local air sources can be diffused horizontally, further accelerating the loss of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a cooling device for liquid metal 3D printing in an embodiment of the present utility model;

[0017] Figure 2 is a partial disassembled body structural schematic diagram in an embodiment of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the lower end of the diversion pipe in an embodiment of the present utility model;

[0019] Figure 4 is a disassembled structural schematic diagram of the diversion pipe and the connecting pipe in an embodiment of the present utility model.

[0020] In the figure: 1, placing frame; 2, connecting pipe; 3, fan; 4, condenser; 5, heat dissipation hole; 6, diversion structure; 7, diversion pipe; 8, shunt hole; 9, first ventilation groove; 10, second ventilation groove; 11, disassembly structure; 12, threaded pipe; 13, protective frame; 14, filter net; 15, reserved hole; 16, screw rod; 17, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, in combination with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1

[0023] Combined with Figures 1 - 4 , a cooling device for liquid metal 3D printing includes a placement frame 1. Inside the rear end of the placement frame 1, a connecting pipe 2 is fixedly arranged. At the upper end of the connecting pipe 2, a fan 3 is fixedly arranged. Inside the connecting pipe 2 below the fan 3, a condenser 4 is fixedly arranged. In the middle of the front end of the connecting pipe 2, a plurality of heat dissipation holes 5 are opened. On both sides of the front end of the connecting pipe 2, a diversion structure 6 is arranged. The diversion structure 6 includes diversion pipes 7 fixedly installed on both sides of the front end of the connecting pipe 2. On the side where the two groups of diversion pipes 7 are close to each other, diversion holes 8 are opened. On the front end of the placement frame 1, a first ventilation slot 9 is opened. On both sides of the placement frame 1, second ventilation slots 10 are opened.

[0024] Referring to Figure 2 and Figure 4 , it is further obtained that a protective frame 13 is fixedly arranged at the upper end of the fan 3. Inside the inner wall of the protective frame 13, a filter net 14 is fixedly arranged. At the lower end of the protective frame 13, a convex column is fixedly arranged. At the upper end of the fan 3 below the convex column, corresponding reserved holes 15 are opened. On both sides of the placement frame 1, mounting plates are fixedly arranged. Inside the mounting plates, mounting holes are opened. The material of the filter net 14 is non-woven cotton. At the upper end of the connecting pipe 2, a screw 16 is fixedly arranged. The upper end of the screw 16 passes through both sides of the fan 3 and is threadedly installed with a nut 17.

[0025] Specifically, the protective frame 13 is used to fixedly arrange the filter net 14. The filter net 14 is used to filter dust to prevent dust from entering the inside of the connecting pipe 2. The mounting holes can fixedly install the placement frame 1 on the surface of other objects. The screw 16 and the nut 17 realize the quick installation of the fan 3.

[0026] Embodiment 2

[0027] Referring to Figure 2 , Figure 3 , and on the basis of Embodiment 1, it is further obtained that a disassembly structure 11 is installed between the diversion pipe 7 and the connecting pipe 2. The disassembly structure 11 includes threaded pipes 12 fixedly arranged on both sides of the front end of the connecting pipe 2. The rear end of the diversion pipe 7 is threadedly connected to the threaded pipe 12.

[0028] Specifically, the threaded tube 12 is threadedly connected to the rear end of the diversion tube 7, which can achieve quick installation and removal of the diversion tube 7, reducing the difficulty for operators.

[0029] During the actual operation process, when it is necessary to cool down the substrate, place the placement frame 1 on the upper end of the substrate, start the fan 3 and the condenser 4. The air source is ejected from the inside of the heat dissipation holes 5 after passing through the condenser 4. The air source is located at the upper end of the substrate, accelerating the flow of heat at the upper end of the substrate and quickly cooling it.

[0030] The local air source is ejected from the inside of the diversion holes 8 through the diversion tube 7, so that the air source blows into the upper end of the substrate from both sides. The air source blowing forward flows forward through the inside of the first ventilation groove 9, and the two groups of second ventilation grooves 10 accelerate the circulation of heat from both sides.

[0031] The filter screen 14 intercepts and filters the air entering the inside of the connecting tube 2, reducing the occurrence of dust entering the inside of the connecting tube 2 and ensuring the purity of the air source.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for liquid metal 3D printing, comprising a placement frame (1), characterized in that: A connecting pipe (2) is fixedly arranged inside the rear end of the placement frame (1), a fan (3) is fixedly arranged on the upper end of the connecting pipe (2), a condenser (4) is fixedly arranged inside the connecting pipe (2) located at the lower end of the fan (3), a plurality of heat dissipation holes (5) are provided in the middle of the front end of the connecting pipe (2), a flow guide structure (6) is provided on both sides of the front end of the connecting pipe (2), the flow guide structure (6) comprises flow guide pipes (7) fixedly installed on both sides of the front end of the connecting pipe (2), a diversion hole (8) is provided on the side where the two groups of flow guide pipes (7) are close to each other, a first ventilation slot (9) is provided at the front end of the placement frame (1), and second ventilation slots (10) are provided on both sides of the placement frame (1).

2. The cooling device for liquid metal 3D printing according to claim 1, wherein: A dismantling structure (11) is installed between the guide pipe (7) and the connecting pipe (2), and the dismantling structure (11) comprises threaded pipes (12) fixedly arranged on both sides of the front end of the connecting pipe (2), and the rear end of the guide pipe (7) is threadedly connected to the threaded pipes (12).

3. The cooling device for liquid metal 3D printing according to claim 1, characterized in that: A protective frame (13) is fixedly provided at the upper end of the fan (3), a filter screen (14) is fixedly provided on the inner wall of the protective frame (13), a convex column is fixedly provided at the lower end of the protective frame (13), and a corresponding reserved hole (15) is opened at the upper end of the fan (3) located at the lower end of the convex column.

4. The cooling device for liquid metal 3D printing according to claim 1, characterized in that: Mounting plates are fixedly arranged on both sides of the placement frame (1), and mounting holes are provided inside the mounting plates.

5. The cooling device for liquid metal 3D printing according to claim 3, characterized in that: The filter screen (14) is made of non-woven cotton.

6. The cooling device for liquid metal 3D printing according to claim 1, characterized in that: A screw rod (16) is fixedly arranged at the upper end of the connecting pipe (2); the upper end of the screw rod (16) passes through two sides of the fan (3) and is threadedly mounted with a nut (17).

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