3D printing wire extrusion device based on fused deposition technology

Abstract

The utility model discloses a 3D printing wire rod extrusion device based on fused deposition technology, and relates to the technical field of 3D printing wire rod extrusion, the 3D printing wire rod extrusion device comprises a support assembly, a fusion assembly and an extrusion assembly, the support assembly comprises a fixed frame and a triangular plate, the triangular plate is fixedly installed on the top of the fixed frame, and the triangular plate is fixed on the fixed frame; the melting assembly is fixedly installed at the top of the supporting assembly, the melting assembly comprises a screw rod and a heating rod, the heating rod is arranged in the screw rod, the extrusion assembly is fixedly installed at the bottom of the supporting assembly, the extrusion assembly comprises an extrusion barrel and a lining, and the lining is movably installed in the extrusion barrel. Under the combined action of the screw rod, the heating rod and the triangular plate, the heating rod is arranged in the screw rod, so that the heating rod and the screw rod exist in the melting cylinder together, meanwhile, the melting assembly and the extrusion assembly are installed on the fixing frame together through the triangular plate, the occupied space of the device is reduced, and the use scene is expanded.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing filament extrusion technology, specifically to a 3D printing filament extrusion device based on fused deposition modeling technology. Background Technology

[0002] 3D printing is a widely used rapid prototyping technology. It is an additive manufacturing process that uses digital model files as a basis and powdered metal or plastic as a binder. Under computer control, molten plastic or other binder materials are stacked and additively manufactured by an extrusion device according to the slice layer information. The advantages of 3D printing are that it is not limited by the complexity of the part shape and is fast. At present, 3D printing equipment is developing rapidly and has gradually entered people's vision and been applied to various industries.

[0003] However, existing 3D printing filament extrusion devices occupy a large space due to their multiple components, limiting their application scenarios. Furthermore, when melting adhesive materials such as plastics, excessively high or low temperatures increase the difficulty of subsequent material handling, making it difficult to shape the workpiece and hindering widespread use.

[0004] To address this problem, this application provides a 3D printing filament extrusion apparatus based on fused deposition modeling (FDM) technology. Utility Model Content

[0005] The purpose of this invention is to provide a 3D printing filament extrusion device based on fused deposition modeling technology, in order to solve the problems mentioned in the background art, such as the large space occupied by the 3D printing filament extrusion device, the difficulty in subsequent material handling due to temperature affecting the melting of the bonding material, which limits the application scenarios, makes it difficult to form workpieces, and results in poor performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A 3D printing filament extrusion device based on fused deposition modeling (FDM) technology includes a support assembly, a melting assembly, and an extrusion assembly. The support assembly includes a frame and a triangular plate, with the triangular plate fixedly mounted on top of the frame. The melting assembly is fixedly mounted on top of the support assembly and includes a screw rod and a heating rod disposed inside the screw rod. The extrusion assembly is fixedly mounted on the bottom of the support assembly and includes an extrusion cylinder and a liner, with the liner movably mounted inside the extrusion cylinder.

[0008] A further improvement of the present invention is that a fixing block is fixedly installed on the top of the fixing frame, and an I-shaped block is fixedly installed on the top of the fixing frame.

[0009] A further improvement of this utility model is that: a melting cylinder is fixedly installed inside the fixed block, the spiral rod is rotatably installed inside the melting cylinder, a motor is fixedly installed on the top of the I-shaped block, and the spiral rod is fixedly installed at one end of the motor.

[0010] A further improvement of this utility model is that: a bearing is fixedly installed inside the spiral rod, the heating rod is fixedly installed inside the bearing, and one end of the heating rod is fixedly installed outside the melting cylinder.

[0011] A further improvement of this utility model is that: the top of the melting cylinder is provided with a feed inlet, the bottom of the melting cylinder is provided with a discharge outlet, the triangular plate is fixedly connected to the outside of the discharge outlet, and a temperature sensor is fixedly installed inside the melting cylinder.

[0012] A further improvement of this utility model is that: the extrusion cylinder is fixedly installed at the bottom of the triangular plate, a fixing ring is fixedly installed on the outside of the extrusion cylinder, a fixing seat is fixedly installed at both ends of the fixing ring, and a fan is fixedly installed inside the fixing seat.

[0013] A further improvement of this utility model is that: the bottom end of the extrusion cylinder is threadedly connected to a threaded ring, and the bottom end of the extrusion cylinder is movably connected to an extrusion port, which is located inside the threaded ring.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a 3D printing filament extrusion device based on fused deposition modeling technology. Through the combined action of a screw rod, a heating rod, and a triangular plate, the heating rod is placed inside the screw rod, so that the heating rod and the screw rod coexist inside the melting cylinder. At the same time, the triangular plate allows the melting component and the extrusion component to be mounted together on a fixed frame, reducing the space occupied by the device and expanding the application scenarios.

[0016] 2. This utility model provides a 3D printing filament extrusion device based on fused deposition modeling technology. With the combined action of a heating rod and a temperature sensor, the temperature of the molten filament can be monitored in real time by the temperature sensor inside the melting cylinder, and the temperature of the heating rod can be adjusted accordingly to keep the filament in a good molten state, which is convenient for subsequent workpiece forming. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the 3D printing filament extrusion device based on fused deposition modeling technology of this utility model;

[0018] Figure 2This is a schematic diagram of the connection structure of the fusion assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the melting component and the extrusion component of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0022] In the diagram: 1. Support assembly; 2. Melting assembly; 3. Extrusion assembly; 10. Fixing frame; 11. Fixing block; 12. I-shaped block; 13. Triangular plate; 14. Fixing ring; 20. Motor; 21. Melting cylinder; 22. Feed inlet; 23. Temperature sensor; 24. Heating rod; 25. Screw rod; 26. Bearing; 27. Discharge port; 30. Extrusion cylinder; 31. Fixing seat; 32. Fan; 33. Threaded ring; 34. Extrusion port; 35. Liner. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] like Figure 1-5 As shown, this utility model provides a 3D printing filament extrusion device based on fused deposition modeling technology, including a support component 1, a melting component 2, and an extrusion component 3. The support component 1 includes a fixed frame 10 and a triangular plate 13. The melting component 2 and the extrusion component 3 are mounted together on the fixed frame 10 by the triangular plate 13, which reduces the space occupied by the device and expands the application scenarios. The triangular plate 13 is fixedly installed on the top of the fixed frame 10. A fixing block 11 is fixedly installed on the top of the fixed frame 10. An I-shaped block 12 is fixedly installed on the top of the fixed frame 10. A fixing ring 14 is fixedly installed on the outside of the extrusion cylinder 30.

[0025] like Figure 2 , Figure 4 and Figure 5As shown, the melting assembly 2 is fixedly installed on the top of the support assembly 1. The melting assembly 2 includes a screw rod 25 and a heating rod 24. The heating rod 24 is located inside the screw rod 25. The melting cylinder 21 is fixedly installed inside the fixing block 11. The screw rod 25 is rotatably installed inside the melting cylinder 21. The top of the I-shaped block 12 is fixedly installed with a motor 20. The motor 20 drives the screw rod 25 to rotate and convey the molten wire. The screw rod 25 is fixedly installed at one end of the motor 20. The bearing 26 is fixedly installed inside the screw rod 25. The top of the melting cylinder 21 has a feed port 22 and the bottom of the melting cylinder 21 has a discharge port 27. The triangular plate 13 is fixedly connected to the outside of the discharge port 27. The melting cylinder 21 is preheated by the heating rod 24. Then, the wire is fed into the melting cylinder 21 through the feed port 22 by the feeding mechanism. The wire is melted by the heating rod 24.

[0026] like Figure 2 , Figure 4 and Figure 5 As shown, the heating rod 24 is fixedly installed inside the bearing 26, and one end of the heating rod 24 is fixedly installed outside the melting cylinder 21. A temperature sensor 23 is fixedly installed inside the melting cylinder 21. The temperature sensor 23 can monitor the temperature of the molten wire in real time and adjust the temperature of the heating rod 24 accordingly. Under the combined action of the heating rod 24 and the temperature sensor 23, the wire is kept in a good molten state, which is convenient for subsequent workpiece forming.

[0027] like Figure 2-5 As shown, the extrusion assembly 3 is fixedly installed at the bottom of the support assembly 1. The extrusion assembly 3 includes an extrusion cylinder 30 and an inner liner 35. The inner liner 35 is movably installed inside the extrusion cylinder 30. The extrusion cylinder 30 is fixedly installed at the bottom of the triangular plate 13. Fixed seats 31 are fixedly installed at both ends of the fixed ring 14. A fan 32 is fixedly installed inside the fixed seat 31. A threaded ring 33 is threadedly connected to the bottom end of the extrusion cylinder 30. An extrusion port 34 is movably connected to the bottom end of the extrusion cylinder 30. The extrusion port 34 is located inside the threaded ring 33. Molten wire is fed into the extrusion cylinder 30 and the inner liner 35 through the discharge port 27, and then extruded through the extrusion port 34. The cooling and shaping of the wire is accelerated by the rotation of the fan 32.

[0028] The working principle of this 3D printing filament extrusion device based on fused deposition modeling technology will be explained in detail below.

[0029] like Figure 1-5As shown, when using this 3D printing filament extrusion device based on fused deposition modeling (FDM) technology, the device is connected to the 3D printer via the mounting bracket 10. The heating rod 24 is then energized to preheat the melting cylinder 21. The filament is then fed into the melting cylinder 21 through the feed inlet 22 via the feeding mechanism. The heating rod 24 melts the filament. While the heating rod 24 is heating and melting the filament in the melting cylinder 21, the temperature sensor 23 inside the melting cylinder 21 can monitor the temperature of the molten filament in real time and adjust the temperature of the heating rod 24 accordingly. Through the combined action of the heating rod 24 and the temperature sensor 23, the filament is kept in good condition. The molten state facilitates subsequent workpiece forming. Simultaneously, the motor 20 drives the screw rod 25 to rotate, conveying the molten wire. By placing the heating rod 24 inside the screw rod 25, the heating rod 24 and the screw rod 25 coexist inside the melting cylinder 21. At the same time, the triangular plate 13 enables the melting component 2 and the extrusion component 3 to be mounted together on the fixed frame 10. Through the combined action of the screw rod 25, the heating rod 24 and the triangular plate 13, the space occupied by the device is reduced, expanding the application scenarios. The wire enters the extrusion cylinder 30 and the inner liner 35 through the discharge port 27, and is then extruded through the extrusion port 34. The rotation of the fan 32 accelerates the cooling and shaping of the wire.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A 3D printing filament extrusion device based on fused deposition modeling (FDM) technology, comprising a support assembly (1), a melting assembly (2), and an extrusion assembly (3), characterized in that: The support assembly (1) includes a fixed frame (10) and a triangular plate (13). The triangular plate (13) is fixedly installed on the top of the fixed frame (10). The melting assembly (2) is fixedly installed on the top of the support assembly (1). The melting assembly (2) includes a screw rod (25) and a heating rod (24). The heating rod (24) is disposed inside the screw rod (25). The extrusion assembly (3) is fixedly installed at the bottom of the support assembly (1). The extrusion assembly (3) includes an extrusion cylinder (30) and a liner (35). The liner (35) is movably installed inside the extrusion cylinder (30).

2. The 3D printing filament extrusion device based on fused deposition modeling (FDM) technology according to claim 1, characterized in that: A fixing block (11) is fixedly installed on the top of the fixing frame (10), and an I-shaped block (12) is fixedly installed on the top of the fixing frame (10).

3. The 3D printing filament extrusion device based on fused deposition modeling technology according to claim 2, characterized in that: The fixed block (11) has a melting cylinder (21) fixedly installed inside, and the spiral rod (25) is rotatably installed inside the melting cylinder (21). The top of the I-shaped block (12) has a motor (20) fixedly installed, and the spiral rod (25) is fixedly installed at one end of the motor (20).

4. The 3D printing filament extrusion device based on fused deposition modeling (FDM) technology according to claim 1, characterized in that: The screw rod (25) is fixedly installed with a bearing (26) inside, the heating rod (24) is fixedly installed inside the bearing (26), and one end of the heating rod (24) is fixedly installed outside the melting cylinder (21).

5. A 3D printing filament extrusion device based on fused deposition modeling (FDM) technology according to claim 3, characterized in that: The top of the melting cylinder (21) is provided with a feed inlet (22), the bottom of the melting cylinder (21) is provided with a discharge outlet (27), the triangular plate (13) is fixedly connected to the outside of the discharge outlet (27), and a temperature sensor (23) is fixedly installed inside the melting cylinder (21).

6. The 3D printing filament extrusion device based on fused deposition modeling (FDM) technology according to claim 1, characterized in that: The extrusion cylinder (30) is fixedly installed at the bottom of the triangular plate (13). A fixing ring (14) is fixedly installed on the outside of the extrusion cylinder (30). Fixing seats (31) are fixedly installed at both ends of the fixing ring (14). A fan (32) is fixedly installed inside the fixing seat (31).

7. A 3D printing filament extrusion device based on fused deposition modeling (FDM) technology according to claim 1, characterized in that: The bottom end of the extrusion cylinder (30) is threadedly connected to a threaded ring (33), and the bottom end of the extrusion cylinder (30) is movably connected to an extrusion port (34), which is located inside the threaded ring (33).

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