Detachable lengthened high-speed 3D printer heating extrusion part

Abstract

The detachable lengthened high-speed 3D printer heating extrusion part comprises a spray head mounting plate, a heat dissipation device and a spray head assembly, the spray head assembly comprises a spray head, a nozzle, a heating rod and a wire outlet hole, the spray head is arranged on one side of the spray head mounting plate, the nozzle is arranged on the lower side of the spray head, and a first cavity, a second cavity and a third cavity are formed in the nozzle respectively; the number of the heating rods is multiple, the multiple heating rods are all arranged in the first cavity, the wire outlet hole is formed in one side of the nozzle, the wire outlet hole communicates with the first cavity, multiple first threaded holes are formed in one side of the nozzle, the multiple first threaded holes communicate with the first cavity, and first fixing bolts are installed in the multiple first threaded holes in a threaded mode. According to the utility model, the length of the nozzle is optimized to be 100mm, and the distribution of the heating rods is reasonably planned, so that when the printing speed is doubled, the wire output quantity of the printer is sufficient and stable, the wires are melted more completely when reaching the nozzle, and the longitudinal uniform temperature of the nozzle is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a detachable and lengthened high-speed 3D printer heating extrusion component. Background Art

[0002] Additive Manufacturing (AM), commonly known as 3D printing, integrates computer-aided design, material processing and forming technology, and is based on digital model files. It uses software and numerical control systems to stack special metal materials, non-metallic materials, and medical biomaterials layer by layer in the form of extrusion, sintering, melting, photocuring, and spraying to produce physical objects. Compared with the traditional processing mode of removing, cutting, and assembling raw materials, AM is a "bottom-up" manufacturing method of 3D printing equipment through material accumulation, from scratch. This makes it possible to manufacture complex structural parts that were previously constrained by traditional manufacturing methods and could not be achieved. In the past two decades, AM technology has achieved rapid development, and various names such as "rapid prototyping", "three-dimensional printing", and "physical free manufacturing" have expressed the characteristics of this technology from different aspects.

[0003] The length of the current 3D printer nozzle is 50 mm. It takes a long time to print super-large products (1m×1m×1m) at the current conventional printing speed (60mm / s). Increasing the printing speed can easily cause insufficient melting and insufficient filament printing. At the same time, if the nozzle is extended at will, longitudinal temperature unevenness is also likely to occur. Therefore, it is urgent to design a detachable and lengthened high-speed 3D printer heating extrusion component to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a detachable and lengthened high-speed 3D printer heating extrusion component to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A detachable and lengthened high-speed 3D printer heating extrusion component comprises a nozzle mounting plate, a heat dissipation device and a nozzle assembly, wherein the nozzle assembly comprises a nozzle, a nozzle, a heating rod and a wire outlet hole, wherein the nozzle is arranged on one side of the nozzle mounting plate, the length of the nozzle is 100 mm, the nozzle is arranged on the lower side of the nozzle, a first cavity, a second cavity and a third cavity are respectively opened in the nozzle, a plurality of heating rods are arranged in the first cavity, the wire outlet hole is opened on one side of the nozzle, the wire outlet hole is connected to the first cavity, a plurality of first threaded holes are opened on one side of the nozzle, the plurality of first threaded holes are connected to the first cavity, a plurality of first threaded holes are threadedly installed with first fixing bolts, and the plurality of first fixing bolts respectively correspond to the plurality of heating rods.

[0007] Two temperature measuring probes are arranged in the second cavity, and two second threaded holes are opened on one side of the nozzle, the two second threaded holes are connected with the second cavity, and second fixing bolts are threadedly installed in the two second threaded holes, and the two second fixing bolts correspond to the two temperature measuring probes respectively.

[0008] The inner diameter of the upper half of the third cavity is greater than that of the lower half, and the nozzle is made of brass.

[0009] A first thread groove is formed on the inner wall circumference of the lower end of the third cavity, and a first externally threaded pipe is fixedly mounted on the upper side of the nozzle, and the first externally threaded pipe is threadedly mounted in the first thread groove.

[0010] The heat dissipation device includes a heat dissipation fan, a heat dissipation throat and a heat sink. There are two heat dissipation fans, which are fixedly mounted on one side of the nozzle mounting plate. There are multiple heat sinks, which are fixedly mounted on the periphery of the heat dissipation throat. The two heat dissipation fans are respectively located on both sides of the heat dissipation throat. The heat dissipation throat is arranged on the upper side of the nozzle. The heat sink is a wound fin.

[0011] A second externally threaded tube is provided at the lower side of the heat dissipation throat, a second thread groove is provided on the circumference of the inner wall at the upper end of the third cavity, the second externally threaded tube is threadedly installed in the second thread groove, and the heat dissipation throat is connected to the third cavity.

[0012] In the above technical solution, the detachable and lengthened high-speed 3D printer heating extrusion component provided by the utility model has the following beneficial effects:

[0013] (1) By optimizing the nozzle length to 100 mm and rationally planning the distribution of the heating rods, it is greatly ensured that when the printing speed is doubled, the printer has sufficient and stable filament output, and the filament melts more completely when it reaches the nozzle, ensuring uniform temperature in the longitudinal direction of the nozzle.

[0014] (2) The wire outlet hole provided on one side of the nozzle can facilitate the user to install and replace the heating rod, and enables the user to connect the wire of the heating rod after installing the heating rod, thereby greatly improving the convenience of using the device.

[0015] (3) The first threaded hole and the first fixing bolt can cooperate with the outlet hole to facilitate the user to fix and install the heating rod, and can also cooperate with the outlet hole to facilitate the user to disassemble the heating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The utility model provides a schematic diagram of the overall structure of the detachable and lengthened high-speed 3D printer heating extrusion component embodiment.

[0018] Figure 2 A schematic diagram of the exploded structure of the heat dissipation pipe and the nozzle provided in the embodiment of the detachable and lengthened high-speed 3D printer heating extrusion component of the utility model.

[0019] Figure 3 A schematic diagram of the exploded structure of the nozzle and the spray head provided for the embodiment of the detachable and lengthened high-speed 3D printer heating extrusion component of the utility model.

[0020] Figure 4 A schematic diagram of the cross-sectional structure of a nozzle provided for an embodiment of a detachable and lengthened high-speed 3D printer heating extrusion component of the utility model.

[0021] 1. Nozzle mounting plate; 2. Heat dissipation device; 3. Nozzle assembly; 4. Nozzle; 5. Nozzle; 6. First fixing bolt; 7. First threaded hole; 8. First cavity; 9. Second cavity; 10. Third cavity; 11. Temperature probe; 12. Heating rod; 14. Wire outlet hole; 15. Second fixing bolt; 16. Second threaded hole; 17. First external threaded pipe; 18. First threaded groove; 19. Cooling fan; 20. Cooling throat; 21. Heat sink; 22. Second external threaded pipe; 23. Second threaded groove. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-4 As shown, the detachable and lengthened high-speed 3D printer heating extrusion component provided by the embodiment of the utility model includes a nozzle mounting plate 1, a heat dissipation device 2 and a nozzle assembly 3, the nozzle assembly 3 includes a nozzle 4, a nozzle 5, a heating rod 12 and a wire outlet hole 14, the nozzle 4 is arranged on one side of the nozzle mounting plate 1, the length of the nozzle 4 is 100 mm, the nozzle 5 is arranged on the lower side of the nozzle 4, the nozzle 5 is respectively provided with a first cavity 8, a second cavity 9 and a third cavity 10, the number of the heating rods 12 is multiple, the multiple heating rods 12 are all arranged in the first cavity 8, the wire outlet hole 14 is opened on one side of the nozzle 5, the wire outlet hole 14 is connected to the first cavity 8, the nozzle 5 is provided with a plurality of first threaded holes 7 on one side, the plurality of first threaded holes 7 are all connected to the first cavity 8, and the plurality of The first threaded holes 7 are all threadedly installed with first fixing bolts 6, and the multiple first fixing bolts 6 correspond to the multiple heating rods 12 respectively. Two temperature measuring probes 11 are arranged in the second cavity 9. Two second threaded holes 16 are opened on one side of the nozzle 5. The two second threaded holes 16 are connected with the second cavity 9. The two second threaded holes 16 are both threadedly installed with second fixing bolts 15, and the two second fixing bolts 15 correspond to the two temperature measuring probes 11 respectively. The inner diameter of the upper half of the third cavity 10 is larger than that of the lower half. The nozzle 4 is made of brass. The inner wall of the lower end of the third cavity 10 is provided with a first threaded groove 18. A first externally threaded tube 17 is fixedly installed on the upper side of the nozzle 5, and the first externally threaded tube 17 is threadedly installed in the first threaded groove 18.

[0024] Specifically, in this embodiment, the nozzle 4 is optimized and lengthened to 100 mm compared with the ordinary nozzle, and the heating rod is reasonably arranged in the optimized nozzle 4, so that the wire melts more completely when reaching the nozzle 5, and the longitudinal temperature of the nozzle can be ensured to be uniform. The nozzle 4 is divided into three cavities, the first cavity 8 and the second cavity 9 are respectively placed with a temperature probe 11 and a heating rod 12, and the third cavity 10 is a melting chamber. The nozzle 4 is made of brass as a whole, which can facilitate heat conduction, so that the heat of the heating rod 12 is evenly conducted to the second cavity 9 and the third cavity 10, and then the temperature probe 11 can be used to detect the heat of the nozzle 4 when melting the wire in real time. The upper and lower halves of the third cavity 10 are made of variable diameters. The nozzle 5 is arranged at the end with a reduced inner diameter, which can increase the speed of the nozzle 5 spraying out the melted wire. Through the first threaded hole 7, the first fixing bolt 6 and the wire outlet hole 14, when installing the heating rod 12, the heating rod 12 can be placed in the third cavity 10 through the wire outlet hole 14, and then the first fixing bolt 6 is rotated to make the first fixing bolt 6 move through the first threaded hole 7 and squeeze the heating rod 12 to fix the heating rod 12, and then the wire of the heating rod 12 is connected through the wire outlet hole 14 to complete the installation of the heating rod 12. When disassembling, the above steps can be reversed. By setting the first external threaded tube 17 and the first threaded groove 18, it is convenient for the user to disassemble the nozzle 5 for disassembly and cleaning.

[0025] The utility model provides a detachable and lengthened high-speed 3D printer heating extrusion component, the heat dissipation device 2 includes a heat dissipation fan 19, a heat dissipation throat 20 and a heat sink 21, the number of the heat dissipation fans 19 is two, the two heat dissipation fans 19 are fixedly mounted on one side of the nozzle mounting plate 1, the number of the heat dissipation fins 21 is multiple, the multiple heat dissipation fins 21 are fixedly mounted on the periphery of the heat dissipation throat 20, the two heat dissipation fans 19 are respectively located on both sides of the heat dissipation throat 20, the heat dissipation throat 20 is arranged on the upper side of the nozzle 4, the heat dissipation fin 21 is a winding fin, a second externally threaded tube 22 is arranged on the lower side of the heat dissipation throat 20, a second threaded groove 23 is opened on the periphery of the inner wall of the upper end of the third cavity 10, the second externally threaded tube 22 is threadedly mounted in the second threaded groove 23, and the heat dissipation throat 20 is connected to the third cavity 10.

[0026] In another embodiment provided by the utility model, through the heat dissipation throat 20, the heat sink 21 and the heat dissipation fan 19, when the wire is squeezed into the heat dissipation throat 20 through the feed hole on the upper side of the heat dissipation throat 20, the heat dissipation throat 20 can be cooled by the heat dissipation fins 21, and the heat dissipation throat 20 can be cooled by starting the heat dissipation fan 19 to assist the heat dissipation fins 21, which can avoid the wire from melting prematurely in the heat dissipation throat 20 when conveying the wire into the nozzle 4, thereby ensuring the stability of the conveying wire.

[0027] Working principle: the wire is squeezed into the heat dissipation throat 20 through the feed hole on the upper side of the heat dissipation throat 20 for shaping, and then the wire is squeezed into the third cavity 10 as the melting chamber in the nozzle through the discharge hole of the heat dissipation throat 20, and then the wire is heated and melted into liquid by the heating rod 12 in the third cavity 10. At the same time, the equipment continuously feeds the wire, and the unmelted wire continues to enter the third cavity 10, giving the melted wire in the third cavity 10 a corresponding thrust, and the unmelted material is used to extrude the molten material. Compared with the screw extrusion and piston extrusion methods, the adhesion loss of the material can be reduced, and then as the unmelted wire continues to be squeezed in, the melted wire is ejected from the nozzle 5 at a higher speed, and by optimizing and lengthening the nozzle 4 to 100 mm compared with the ordinary nozzle, and by reasonably arranging the heating rod in the optimized nozzle 4, the wire is melted more completely when it reaches the nozzle 5.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A detachable and lengthened high-speed 3D printer heating extrusion component, comprising a nozzle mounting plate (1), a heat sink (2) and a nozzle assembly (3), characterized in that: The nozzle assembly (3) comprises a nozzle (4), a nozzle (5), a heating rod (12) and a wire outlet hole (14). The nozzle (4) is arranged on one side of the nozzle mounting plate (1). The length of the nozzle (4) is 100 mm. The nozzle (5) is arranged on the lower side of the nozzle (4). A first cavity (8), a second cavity (9) and a third cavity (10) are respectively provided in the nozzle (5). There are a plurality of heating rods (12). The plurality of heating rods (12) are all arranged in the first cavity (8). The wire outlet hole (14) is provided on one side of the nozzle (5). The wire outlet hole (14) is connected to the first cavity (8). A plurality of first threaded holes (7) are provided on one side of the nozzle (5). The plurality of first threaded holes (7) are all connected to the first cavity (8). A first fixing bolt (6) is threadedly installed in the plurality of first threaded holes (7). The plurality of first fixing bolts (6) respectively correspond to the plurality of heating rods (12).

2. The detachable and lengthened high-speed 3D printer heating extrusion component according to claim 1, characterized in that: Two temperature measuring probes (11) are arranged in the second cavity (9), and two second threaded holes (16) are provided on one side of the nozzle (5), the two second threaded holes (16) are both connected to the second cavity (9), and second fixing bolts (15) are threadedly installed in the two second threaded holes (16), and the two second fixing bolts (15) respectively correspond to the two temperature measuring probes (11).

3. The detachable and lengthened high-speed 3D printer heating extrusion component according to claim 1, characterized in that: The inner diameter of the upper half of the third cavity (10) is larger than the inner diameter of the lower half, and the nozzle (4) is made of brass.

4. The detachable and lengthened high-speed 3D printer heating extrusion component according to claim 1, characterized in that: A first thread groove (18) is provided on the inner wall circumference of the lower end of the third cavity (10), and a first externally threaded tube (17) is fixedly mounted on the upper side of the nozzle (5), wherein the first externally threaded tube (17) is threadedly mounted in the first thread groove (18).

5. The detachable and lengthened high-speed 3D printer heating extrusion component according to claim 1, characterized in that: The heat dissipation device (2) comprises a heat dissipation fan (19), a heat dissipation pipe (20) and a heat dissipation fin (21). The number of the heat dissipation fans (19) is two, and the two heat dissipation fans (19) are fixedly mounted on one side of the nozzle mounting plate (1). The number of the heat dissipation fins (21) is multiple, and the multiple heat dissipation fins (21) are fixedly mounted on the periphery of the heat dissipation pipe (20). The two heat dissipation fans (19) are respectively located on both sides of the heat dissipation pipe (20). The heat dissipation pipe (20) is arranged on the upper side of the nozzle (4), and the heat dissipation fins (21) are wound fins.

6. The detachable and lengthened high-speed 3D printer heating extrusion component according to claim 5, characterized in that: A second externally threaded tube (22) is provided at the lower side of the heat dissipation throat (20), a second thread groove (23) is provided on the circumferential side of the inner wall at the upper end of the third cavity (10), the second externally threaded tube (22) is threadedly installed in the second thread groove (23), and the heat dissipation throat (20) is connected to the third cavity (10).

Images