Two-color 3D printing wire extrusion device

Abstract

The utility model relates to the technical field of 3D printing, and discloses a double-color 3D printing wire extrusion device which comprises two extrusion cylinders, the extrusion cylinders are fixedly connected with each other through a fixing plate, a combined extrusion cavity is fixedly installed at the end of the fixing plate, and the two ends of the combined extrusion cavity are communicated with the extrusion cylinders at the corresponding positions through single extrusion cavities. Supporting columns are symmetrically and fixedly installed on the side, away from the combined extrusion cavity, of the fixing plate, a raw material box is fixedly installed on the supporting columns, the two sides of the bottom of the raw material box communicate with extrusion barrels installed at the corresponding positions through feeding pipes correspondingly, a primary extrusion mechanism is arranged on the raw material box, and secondary extrusion mechanisms are arranged in the extrusion barrels; and a combined extrusion mechanism is further arranged on the combined extrusion cavity. According to the double-color 3D printing wire extrusion device, the effect of quickly extruding a double-color 3D printing wire is achieved, meanwhile, under the cooperation of the combined extrusion mechanism, the phenomenon that the double-color wire is blocked in the combined extrusion cavity is avoided, and the reliability of the wire extrusion device is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically a two-color 3D printing filament extrusion device. Background Technology

[0002] 3D printing (3DP), also known as additive manufacturing, is a technology that manufactures solid parts by adding materials layer by layer based on three-dimensional CAD data. 3D printing filament is the filamentary material used in 3D printing. During the 3D printing process, these filaments are heated and melted through the extruder of the 3D printer, then extruded from the nozzle, and stacked layer by layer according to a pre-set model shape to ultimately form a three-dimensional object.

[0003] 3D printers materialize digital models by melting, depositing, and cooling 3D filaments. The color of the 3D filament used during printing determines the surface color of the 3D model. However, current 3D filaments are typically only a single color, resulting in 3D models with only one color. Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a two-color 3D printing filament extrusion device to solve the problems mentioned in the background art.

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

[0006] A dual-color 3D printing filament extrusion device includes two extrusion cylinders, which are fixedly connected to each other by a fixing plate. A combined extrusion chamber is fixedly installed at the end of the fixing plate. The two ends of the combined extrusion chamber are interconnected with the corresponding extrusion cylinders through single extrusion chambers. Support columns are symmetrically fixedly installed on the side of the fixing plate away from the combined extrusion chamber. A raw material box is fixedly installed on the support columns. The bottom two sides of the raw material box are respectively connected to the corresponding extrusion cylinders through feed pipes. A primary extrusion mechanism is provided on the raw material box, a secondary extrusion mechanism is provided inside the extrusion cylinders, and a merging extrusion mechanism is also provided on the combined extrusion chamber.

[0007] As an improvement of this utility model: the raw material box is provided with a partition, which divides the raw material box into two chambers, and the upper two sides of the raw material box are equipped with feeding hoppers that communicate with the corresponding chambers.

[0008] As an improvement of this utility model: the primary extrusion mechanism includes an extrusion plate slidably disposed inside the corresponding chamber, a lifting shaft fixedly installed on the upper end of the extrusion plate, and a lifting cylinder fixed to the top of the raw material box connected to the upper end of the lifting shaft.

[0009] As an improvement of this utility model: the secondary extrusion mechanism includes an extrusion shaft rotatably installed inside the corresponding extrusion cylinder, an extrusion screw plate is installed on the extrusion shaft, and an extrusion cavity is provided inside the extrusion cylinder, the extrusion cavity being a conical structure.

[0010] As an improvement of this utility model: the secondary extrusion mechanism includes a push shaft rotatably mounted on a fixed plate, the push shaft passing through the inside of the extrusion chamber, and multiple extrusion screw plates installed on the outside of the push shaft located inside the extrusion chamber.

[0011] As an improvement of this utility model, it also includes a synchronization mechanism for driving the secondary extrusion mechanism and merging the movements of the extrusion mechanism.

[0012] As an improvement of this utility model: the synchronization mechanism includes a motor frame fixed to the end of the fixed plate, a synchronous motor is fixedly installed on the motor frame, the output end of the synchronous motor is connected to the extrusion shaft, and a drive gear is also installed at the end of the extrusion shaft. A driven gear meshes with the outside of the drive gear, and the driven gear is fixedly installed at the end of the extrusion shaft.

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

[0014] 1. By cooperating with the primary extrusion mechanism and the secondary extrusion mechanism, the rapid extrusion of two-color 3D printing filament is achieved. At the same time, with the cooperation of the combined extrusion mechanism, the blockage of the two-color filament inside the combined extrusion chamber is avoided, further ensuring the reliability of the filament extrusion device.

[0015] 2. The synchronous mechanism enables the simultaneous movement of the merging extrusion mechanism and the secondary extrusion mechanism, which not only ensures the uniformity of the extruded wire from the entire wire extrusion device, but also reduces the operating cost of the additional motor installed in the device. It is highly practical and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall bottom view of the present invention;

[0019] Figure 4 This is a cross-sectional view of the primary extrusion mechanism in this utility model.

[0020] Figure 5 This is a cross-sectional view of the extrusion cylinder in this utility model.

[0021] In the diagram: 1. Extrusion cylinder; 2. Single extrusion chamber; 3. Combined extrusion chamber; 4. Raw material box; 5. Feed pipe; 6. Fixed plate; 7. Driven gear; 8. Motor frame; 9. Synchronous motor; 10. Drive gear; 11. Feed hopper; 12. Lifting cylinder; 13. Lifting shaft; 14. Extrusion plate; 15. Support column; 16. Push shaft; 17. Extrusion shaft; 18. Extrusion screw plate; 19. Combined extrusion screw plate; 20. Extrusion chamber body; 21. Partition plate. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] See Figures 1-5In this embodiment of the invention, a two-color 3D printing filament extrusion device includes two extrusion cylinders 1, which are fixedly connected to each other by a fixing plate 6. A combined extrusion chamber 3 is fixedly installed at the end of the fixing plate 6. The two ends of the combined extrusion chamber 3 are interconnected with the corresponding extrusion cylinders 1 via single extrusion chambers 2. Support columns 15 are symmetrically fixedly installed on the side of the fixing plate 6 away from the combined extrusion chamber 3. A material box 4 is fixedly installed on the support columns 15. The bottom two sides of the material box 4 are connected to the corresponding extrusion cylinders 1 via feed pipes 5. A primary extrusion mechanism is provided on the material box 4, a secondary extrusion mechanism is provided inside the extrusion cylinders 1, and a merging extrusion mechanism is also provided on the combined extrusion chamber 3. During operation, the two-color material is first introduced into the corresponding extrusion cylinder 1 through the primary extrusion mechanism. Then, with the cooperation of the secondary extrusion mechanism, the two-color material is introduced into the combined extrusion chamber 3 via the single extrusion chamber 2. Finally, under the action of the merging extrusion mechanism, two-color extrusion is performed, ultimately realizing the extrusion operation of two-color printing filament.

[0028] In one embodiment, the raw material box 4 is provided with a partition 21, which divides the raw material box 4 into two chambers. Feed hoppers 11, which communicate with the corresponding chambers, are installed on both sides of the upper end of the raw material box 4. The wire material is introduced into the two independent chambers provided inside the raw material box 4 through the feed hoppers 11, and then the material is pressed into the extrusion cylinder 1 at the corresponding position through the feed pipe 5.

[0029] In a preferred embodiment, the primary extrusion mechanism includes an extrusion plate 14 slidably disposed inside the corresponding chamber. A lifting shaft 13 is fixedly mounted on the upper end of the extrusion plate 14, and a lifting cylinder 12 fixed to the top of the raw material box 4 is connected to the upper end of the lifting shaft 13. The lifting cylinder 12 is a pneumatic cylinder or a hydraulic cylinder. The lifting cylinder 12 drives the lifting shaft 13 to extend and retract, ultimately causing the extrusion plate 14 to move up and down inside the corresponding chamber, thereby pressing the raw material into the extrusion cylinder 1.

[0030] In a preferred embodiment, the secondary extrusion mechanism includes an extrusion shaft 17 rotatably mounted inside the corresponding extrusion cylinder 1, an extrusion screw plate 18 mounted on the extrusion shaft 17, and an extrusion cavity 20 with a conical structure inside the extrusion cylinder 1. During the rotation of the extrusion shaft 17, it drives the extrusion screw plate 18 to rotate synchronously, and then cooperates with the conical extrusion cavity 20 to extrude the raw material into the combined extrusion cavity 3 for a secondary extrusion.

[0031] To prevent the two-color wire from becoming clogged inside the extrusion chamber 3, in this embodiment, the secondary extrusion mechanism includes a push shaft 16 rotatably mounted on a fixed plate 6. The push shaft 16 passes through the interior of the extrusion chamber 3, and multiple extrusion screw plates 19 are installed on the outside of the push shaft 16 located inside the extrusion chamber 3. When the push shaft 16 rotates, it drives the extrusion screw plates 19 to rotate, thereby effectively outputting the extruded two-color wire.

[0032] Example 2

[0033] This utility model also provides another embodiment, which differs from the above embodiment in that the two-color 3D printing filament extrusion device in this embodiment further includes a synchronization mechanism for driving the secondary extrusion mechanism and merging the movement of the extrusion mechanism.

[0034] The synchronization mechanism includes a motor frame 8 fixed to the end of the fixed plate 6, a synchronous motor 9 fixedly mounted on the motor frame 8, the output end of the synchronous motor 9 connected to the extrusion shaft 16, and a drive gear 10 also mounted on the end of the extrusion shaft 16. A driven gear 7 meshes with the outside of the drive gear 10, and the driven gear 7 is fixedly mounted at the end of the extrusion shaft 17.

[0035] The synchronous motor 9 is started, which directly drives the push shaft 16 to rotate. At the same time, under the action of the drive gear 10 and the driven gear 7, the extrusion shaft 17 is driven to rotate synchronously, thus realizing the synchronous operation of the secondary extrusion mechanism and the combined extrusion mechanism.

[0036] In summary: During operation, the raw material for processing two-color wire is placed inside the raw material box 4. Then, with the cooperation of the primary extrusion mechanism and the secondary extrusion mechanism, the raw material is introduced into the combined extrusion chamber 3. Subsequently, with the cooperation of the combined extrusion mechanism, efficient and uniform extrusion of two-color wire is achieved.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A two-color 3D printing filament extrusion device, comprising two extrusion cylinders (1), characterized in that, The extrusion cylinders (1) are fixedly connected to each other by a fixing plate (6). A combined extrusion cavity (3) is fixedly installed at the end of the fixing plate (6). The two ends of the combined extrusion cavity (3) are connected to the corresponding extrusion cylinders (1) through single extrusion cavities (2). A support column (15) is symmetrically fixedly installed on the side of the fixing plate (6) away from the combined extrusion cavity (3). A raw material box (4) is fixedly installed on the support column (15). The bottom sides of the raw material box (4) are connected to the corresponding extrusion cylinders (1) through feed pipes (5). A primary extrusion mechanism is provided on the raw material box (4). A secondary extrusion mechanism is provided inside the extrusion cylinder (1). A combined extrusion mechanism is also provided on the combined extrusion cavity (3).

2. The dual-color 3D printing filament extrusion device according to claim 1, characterized in that, The raw material box (4) is provided with a partition (21) inside, which divides the raw material box (4) into two chambers. Feed hoppers (11) connected to the corresponding chambers are installed on both sides of the upper end of the raw material box (4).

3. The dual-color 3D printing filament extrusion device according to claim 2, characterized in that, The primary extrusion mechanism includes an extrusion plate (14) slidably disposed inside the corresponding chamber, a lifting shaft (13) fixedly installed on the upper end of the extrusion plate (14), and a lifting cylinder (12) fixed on the top of the raw material box (4) connected to the upper end of the lifting shaft (13).

4. The dual-color 3D printing filament extrusion device according to claim 3, characterized in that, The secondary extrusion mechanism includes an extrusion shaft (17) rotatably installed inside the corresponding extrusion cylinder (1), an extrusion screw plate (18) is installed on the extrusion shaft (17), and an extrusion cavity (20) is provided inside the extrusion cylinder (1), which is a conical structure.

5. A two-color 3D printing filament extrusion device according to claim 4, characterized in that, The secondary extrusion mechanism includes a push shaft (16) rotatably mounted on a fixed plate (6). The push shaft (16) passes through the inside of the extrusion chamber (3). Multiple extrusion screws (19) are installed on the outside of the push shaft (16) located inside the extrusion chamber (3).

6. The dual-color 3D printing filament extrusion device according to claim 1, characterized in that, It also includes a synchronization mechanism for driving the secondary extrusion mechanism and merging the movement of the extrusion mechanism.

7. A two-color 3D printing filament extrusion device according to claim 6, characterized in that, The synchronization mechanism includes a motor frame (8) fixed to the end of the fixed plate (6), a synchronous motor (9) fixedly mounted on the motor frame (8), the output end of the synchronous motor (9) connected to the extrusion shaft (16), and a drive gear (10) also mounted on the end of the extrusion shaft (16). A driven gear (7) meshes with the outside of the drive gear (10), and the driven gear (7) is fixedly mounted on the end of the extrusion shaft (17).

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