3d printing extruder

Abstract

The utility model discloses a 3d printing extruder, which relates to the technical field of 3d printing, and comprises an extrusion shell, the top of the extrusion shell is provided with a feed inlet, the bottom of the extrusion shell is fixedly connected with a support column, and the outer wall of the support column is fixedly connected with a radiator. The first throat pipe is arranged at the bottom of the supporting column, the discharger is arranged at one end of the first throat pipe, and injection molding raw materials on the inner wall of the discharger are evenly heated through the ceramic heating piece arranged on the outer wall of the discharger and the heating block arranged at the bottom of one side of the outer wall of the discharger; and the second throat pipe is arranged on the inner wall of the nozzle, and the molten injection molding raw material is guided to the spout by utilizing the second throat pipe, so that the problem that in the use process of a traditional 3d printing extruder, the molten injection molding raw material is easily adhered to the inner wall of the nozzle, the nozzle is blocked after a long time, and a 3d printed finished product is broken is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D printing extruder. Background Art

[0002] 3D printers are a rapid prototyping process that uses layer-by-layer stacking to create three-dimensional models. Their operating process is similar to that of traditional printers, except that traditional printers print ink onto paper to form two-dimensional flat drawings, while 3D printers stack liquid photosensitive resin materials, molten plastic filaments, gypsum powder and other materials layer by layer through spraying adhesives or extrusion to form a three-dimensional entity.

[0003] During use, existing 3D printing extruders usually deposit melted injection molding materials along the nozzle on the table. However, the melted injection molding materials tend to adhere to the inner wall of the nozzle, which may cause the nozzle to become clogged over time, resulting in broken wires in the 3D printed products. Utility Model Content

[0004] The utility model provides a 3D printing extruder to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A 3D printing extruder comprises an extrusion shell, a feed port is provided on the top of the extrusion shell, a support column is fixedly connected to the bottom of the extrusion shell, a radiator is fixedly connected to the outer wall of the support column, and a melting mechanism is arranged at the bottom of the support column.

[0007] A further improvement of the technical solution of the utility model is that the melting mechanism includes a first throat pipe inserted at the bottom of the support column, one end of the first throat pipe is inserted with a discharger, the outer wall of the discharger is clamped with a ceramic heating plate, and the bottom of one side of the outer wall of the discharger is fixedly connected with a heating block.

[0008] A further improvement of the technical solution of the utility model is that: a nozzle is threadedly connected to the bottom of the discharger, and a second throat is inserted into the inner wall of the nozzle.

[0009] A further improvement of the technical solution of the utility model is that: a motor is fixedly connected to one side of the outer wall of the extrusion shell, and a gear is fixedly connected to the output end of the motor.

[0010] A further improvement of the technical solution of the utility model is that: a linkage gear is meshed on one side of the gear, and one end of the linkage gear is fixedly connected to the first extrusion gear.

[0011] A further improvement of the technical solution of the utility model is that: one end of the outer wall of the extrusion shell is rotatably connected to a pull block, and the inner wall of the pull block is rotatably connected to a second extrusion gear.

[0012] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0013] The utility model provides a 3D printing extruder. A first throat is arranged at the bottom of a support column, a discharger is arranged at one end of the first throat, a ceramic heating sheet arranged on the outer wall of the discharger and a heating block arranged at the bottom of one side of the outer wall are used to uniformly heat the injection molding material on the inner wall of the discharger, a nozzle is arranged at the bottom of the discharger, a second throat is arranged on the inner wall of the nozzle, and the second throat is used to guide the melted injection molding material to the nozzle, thereby solving the problem that the melted injection molding material is easy to adhere to the inner wall of the nozzle during use of the traditional 3D printing extruder, which causes the nozzle to be blocked over time, thereby causing the 3D printed finished product to have broken wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side sectional view of the utility model;

[0016] Figure 3 It is a front cross-sectional view of the utility model;

[0017] Figure 4 For the utility model Figure 3 Enlarged schematic diagram at point A in the middle.

[0018] In the figure: 1. extrusion shell; 2. feed port; 3. support column; 4. radiator; 5. first throat; 6. discharger; 7. ceramic heating plate; 8. heating block; 9. nozzle; 10. second throat; 11. motor; 12. gear; 13. linkage gear; 14. first extrusion gear; 15. lever block; 16. second extrusion gear. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the embodiments:

[0020] Example 1

[0021] like Figure 1-4 As shown, the utility model provides a 3D printing extruder, including an extrusion shell 1, a feed port 2 is opened on the top of the extrusion shell 1, a support column 3 is fixedly connected to the bottom of the extrusion shell 1, a heat sink 4 is fixedly connected to the outer wall of the support column 3, and a melting mechanism is arranged at the bottom of the support column 3.

[0022] In this embodiment, a feed port 2 is provided at the top of the extrusion shell 1, and the injection molding raw material is inserted into the extrusion shell 1 through the feed port 2. The motor 11 is started to drive the first extrusion gear 14, and the second extrusion gear 16 is linked to uniformly insert the injection molding raw material into the support column 3, and the support column 3 enters the melting mechanism provided at the bottom thereof, and the injection molding raw material is melted by the melting mechanism, so that the liquefied injection molding raw material is sprayed onto the table surface through the nozzle 9, so as to perform 3D printing. A radiator 4 is provided on the outer wall of the support column 3, and the radiator 4 is used to volatilize the excess heat generated by the melting mechanism, so as to avoid the excess heat melting the injection molding raw material in the support column 3, causing the injection molding raw material to be blocked in the support column 3, thereby causing the 3D printed product to have broken wires.

[0023] Example 2

[0024] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the melting mechanism includes a first throat 5 inserted at the bottom of the support column 3, a discharger 6 is inserted at one end of the first throat 5, a ceramic heating plate 7 is clamped on the outer wall of the discharger 6, a heating block 8 is fixedly connected to the bottom of one side of the outer wall of the discharger 6, a nozzle 9 is threadedly connected to the bottom of the discharger 6, and a second throat 10 is inserted into the inner wall of the nozzle 9.

[0025] In this embodiment, a first throat 5 is provided at the bottom of the support column 3, a discharger 6 is provided at one end of the first throat 5, and the ceramic heating plate 7 provided on the outer wall of the discharger 6 and the heating block 8 provided at the bottom of one side of the outer wall are used to uniformly heat the injection molding material on the inner wall of the discharger 6. A nozzle 9 is provided at the bottom of the discharger 6, and a second throat 10 is provided on the inner wall of the nozzle 9. The second throat 10 is used to guide the melted injection molding material to the nozzle, thereby solving the problem that the melted injection molding material is easily adhered to the inner wall of the nozzle 9 during the use of the traditional 3D printing extruder, which causes the nozzle 9 to be blocked over time, thereby causing the 3D printed product to have broken wires.

[0026] Example 3

[0027] like Figure 1-4 As shown, based on Example 1, the utility model provides a technical solution: preferably, a motor 11 is fixedly connected to one side of the outer wall of the extrusion shell 1, a gear 12 is fixedly connected to the output end of the motor 11, a linkage gear 13 is meshed on one side of the gear 12, and one end of the linkage gear 13 is fixedly connected to the first extrusion gear 14.

[0028] In this embodiment, a motor 11 is arranged on one side of the outer wall of the extrusion shell 1, and the motor 11 is used to drive its gear 12 to rotate, so that the gear 12 drives the linkage gear 13 arranged on one side to rotate. As the linkage gear 13 rotates, it drives the first extrusion gear 14 arranged at one end, and the first extrusion gear 14 is used to feed the injection molding material into the support column 3.

[0029] Example 4

[0030] like Figure 1-4 As shown, based on Example 1, the utility model provides a technical solution: preferably, one end of the outer wall of the extrusion shell 1 is rotatably connected to a lever block 15, and the inner wall of the lever block 15 is rotatably connected to a second extrusion gear 16.

[0031] In this embodiment, a lever 15 is provided at one end of the outer wall of the extrusion shell 1. When the printing device needs to be maintained, the lever 15 is pulled to disengage the second extrusion gear 16 provided on the inner wall from the extrusion shell 1, thereby facilitating replacement of the first extrusion gear 14 and the second extrusion gear 16.

[0032] Let's talk about the working principle of the 3D printing extruder in detail.

[0033] like Figure 1-4 As shown, a feed port 2 is provided at the top of the extrusion shell 1, and the injection molding raw material is inserted into the extrusion shell 1 through the feed port 2. A motor 11 is provided at one side of the outer wall of the extrusion shell 1, and the motor 11 is used to drive its gear 12 to rotate, so that the gear 12 drives the linkage gear 13 provided at one side to rotate. As the linkage gear 13 rotates, the first extrusion gear 14 provided at one end is driven, and the injection molding raw material is fed into the support column 3 by the first extrusion gear 14. A first throat 5 is provided at the bottom of the support column 3, and a discharger 6 is provided at one end of the first throat 5. The ceramic heating plate 7 provided on the outer wall of the discharger 6 and the heating block 8 provided at the bottom of one side of the outer wall are used to heat the injection molding raw material on the inner wall of the discharger 6. The plastic raw material is evenly heated, a nozzle 9 is arranged at the bottom of the discharger 6, and a second throat 10 is arranged on the inner wall of the nozzle 9. The second throat 10 is used to guide the melted plastic raw material to the nozzle, thereby solving the problem that the melted plastic raw material is easily adhered to the inner wall of the nozzle 9 during the use of the traditional 3D printing extruder, which causes the nozzle 9 to be blocked over time, resulting in broken wires in the 3D printed product. A lever 15 is arranged at one end of the outer wall of the extrusion shell 1. When the printing equipment needs to be maintained, the lever 15 is pulled to disengage the second extrusion gear 16 arranged on the inner wall from the extrusion shell 1, thereby facilitating the replacement of the first extrusion gear 14 and the second extrusion gear 16.

[0034] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A 3D printing extruder, comprising an extrusion housing (1), characterized in that: The top of the extrusion shell (1) is provided with a feed port (2), the bottom of the extrusion shell (1) is fixedly connected to a support column (3), the outer wall of the support column (3) is fixedly connected to a radiator (4), the bottom of the support column (3) is provided with a melting mechanism, the melting mechanism comprises a first throat (5) plugged into the bottom of the support column (3), one end of the first throat (5) is plugged into a discharger (6), the outer wall of the discharger (6) is clamped with a ceramic heating plate (7), the bottom of one side of the outer wall of the discharger (6) is fixedly connected to a heating block (8), the bottom of the discharger (6) is threadedly connected to a nozzle (9), and the inner wall of the nozzle (9) is plugged into a second throat (10).

2. A 3D printing extruder according to claim 1, characterized in that: A motor (11) is fixedly connected to one side of the outer wall of the extrusion shell (1), and a gear (12) is fixedly connected to the output end of the motor (11).

3. A 3D printing extruder according to claim 2, characterized in that: A linkage gear (13) is meshed on one side of the gear (12), and a first extrusion gear (14) is fixedly connected to one end of the linkage gear (13).

4. A 3D printing extruder according to claim 1, characterized in that: One end of the outer wall of the extrusion shell (1) is rotatably connected to a lever block (15), and the inner wall of the lever block (15) is rotatably connected to a second extrusion gear (16).

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