Spray head structure of 3D printer

Abstract

The 3D printer spray head structure comprises a spray head shell, mounting columns are fixedly connected to the left side and the right side of the top of the spray head shell correspondingly, a fixing lantern ring is slidably connected to the outer portions of the mounting columns, a plurality of cavities are formed in the left side and the right side of the bottom of the fixing lantern ring correspondingly, and telescopic assemblies are arranged in the multiple cavities; a clamping ball is rotatably connected to the interior of the top end of the fixing lantern ring, a connecting column is rotatably connected to the exterior of the clamping ball, a rubber plate is slidably connected to the interior of the connecting column, and a threaded block is in threaded connection to the interior of the top end of the connecting column. According to the utility model, the angle adjustment of the spray head shell is realized, the glue outlet position can be flexibly adjusted during use, the mounting is convenient, the operation is simple, the production cost is low, the temperature of a material body can be kept during discharging, and the influence on the printing effect caused by over-soft or over-hard material body is prevented.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and in particular to a 3D printer nozzle structure. Background Art

[0002] The 3D printer nozzle extrudes the melted printing material and deposits it on the printing platform, stacking it layer by layer to form a three-dimensional object. The working principle of the nozzle includes material supply, heating and melting, extrusion, positioning and control, layer stacking, cooling and solidification, and possible support structures.

[0003] Different types of 3D printing materials have different properties, such as melting point, viscosity, fluidity, etc., so correspondingly designed nozzles are required to adapt to the characteristics of these materials.

[0004] After searching, the Chinese patent document with announcement number CN219820658U relates to the field of 3D printing technology, especially a 3D printer nozzle structure, including a stirring mechanism, which is slidably connected to the inside of the top block, and an adjusting mechanism, which is fixedly connected to both sides of the inner wall of the rubber sleeve, and is provided with a stirring mechanism. The structure is provided with stirring blades and heating wires, so as to achieve the purpose of fully stirring and heating the printing raw materials. When the slider moves horizontally on the threaded rod, the second motor is started to control the vertical rod and the stirring blades arranged on both sides to rotate, thereby realizing the stirring of the resin material. The heating wire allows the resin material to be heated while being stirred evenly, which prevents the raw materials from cooling and solidifying prematurely, avoids uneven discharge of the nozzle and even the appearance of solid residue, does not affect the final effect of 3D printing, saves raw materials, and brings convenience to the production process.

[0005] The beneficial effects of the above patent specification mentions that "a stirring mechanism is provided, and the structure is provided with stirring blades and heating wires, so as to achieve the purpose of fully stirring and heating the printing raw materials. When the slider moves horizontally on the threaded rod, the second motor starts to control the vertical rod and the stirring blades arranged on both sides to rotate, thereby realizing the stirring of the resin material. The heating wire allows the resin material to be heated while being stirred evenly, which prevents the raw materials from cooling and solidifying prematurely, avoids uneven discharge of the nozzle and even the generation of solid residue, does not affect the final effect of 3D printing, and saves raw materials". Although the above patent prevents the raw materials from cooling prematurely by stirring and heating, the nozzle cannot be adjusted and cannot flexibly adapt to different printing needs. In view of the above-mentioned related technologies, the inventor believes that a 3D printer nozzle structure is proposed. Summary of the invention

[0006] The purpose of this application is to provide a 3D printer nozzle structure to improve the problem that the nozzle cannot be adjusted and cannot flexibly adapt to different printing requirements.

[0007] The 3D printer nozzle structure provided in this application adopts the following technical solution:

[0008] A 3D printer nozzle structure comprises a nozzle shell, wherein mounting columns are fixedly connected to the left and right sides of the top of the nozzle shell, a fixing collar is slidably connected to the outside of the mounting columns, a plurality of cavities are opened on the left and right sides of the bottom of the fixing collar, a telescopic assembly is arranged inside the plurality of cavities, a clamping ball is rotatably connected to the inside of the top of the fixing collar, a connecting column is rotatably connected to the outside of the connecting ball, a rubber plate is slidably connected to the inside of the connecting column, a threaded block is threadedly connected to the top of the connecting column, a connecting sleeve is fixedly connected to the bottom of the nozzle shell, a throat fitting is fixedly connected to the bottom inner wall of the connecting sleeve, and a protective assembly is arranged at the bottom of the nozzle shell.

[0009] By adopting the above technical solution, the position of the nozzle housing can be flexibly adjusted through the clamping ball, the connecting column and the rubber plate.

[0010] Optionally, the telescopic assembly includes a limit plate, a spring and a rubber column, the outside of the limit plate is slidably connected to the inside of the cavity, the spring is arranged inside the cavity, and one side of the rubber column is fixedly connected to the outside of one side of the limit plate.

[0011] By adopting the above technical solution, the installation column and the fixing collar can be connected through the telescopic component, and the operation is convenient.

[0012] Optionally, one end of the spring is fixedly connected to one side of the interior of the cavity, and the other end of the spring is fixedly connected to a side of the limiting plate away from the rubber column.

[0013] By adopting the above technical solution, the spring can use its own elastic properties to generate a reaction force on the rubber column, and the limit plate can prevent the spring from escaping from the interior of the cavity.

[0014] Optionally, a plurality of slots are provided on the outside of the mounting column, and the outside of one end of the rubber column is engaged with the inner wall of the slot.

[0015] By adopting the above technical solution, the rubber column and the clamping groove can fix the installation column inside the fixing ring.

[0016] Optionally, a cross groove is formed on the top of the threaded block, and the bottom of the threaded block contacts the top of the rubber plate.

[0017] By adopting the above technical solution, the cross groove facilitates the rotation of the threaded block.

[0018] Optionally, a fixing ring is provided on the outside of the throat fitting, a nozzle is fixedly connected to the bottom of the fixing ring, a heat-insulating silicone sleeve is fixedly connected to the outside of the nozzle, and a powder outer cavity is provided on the inner wall of the bottom of the nozzle.

[0019] By adopting the above technical solution, the raw materials can be smoothly transported for printing.

[0020] Optionally, the protective component includes a powder inner cavity, a gas inner cavity, a gas outer cavity and a water cavity, the outside of the powder inner cavity is arranged inside the powder outer cavity, the inside of the gas inner cavity is fixedly connected to the outside of the powder inner cavity, the inside of the gas outer cavity is fixedly connected to the outside of the gas inner cavity, and the inside of the water cavity is fixedly connected to the outside of the gas outer cavity.

[0021] By adopting the above technical solution, the outside of the nozzle can be protected.

[0022] Optionally, the outside of the rubber column is slidably connected to the inner wall of the cavity, and the outside of the rubber column is slidably connected to the internal through hole of the fixing ring.

[0023] By adopting the above technical solution, the rubber column can be moved along the outside of the cavity and smoothly engaged with the slot.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. In the utility model, the angle adjustment of the nozzle housing is realized through the mutual cooperation of the nozzle housing, the mounting column, the fixing ring, the cavity, the limit plate, the spring, the rubber column, the card slot, the card ball, the connecting column, the rubber plate, the threaded block, the cross groove and other structures, so that the angle adjustment of the nozzle housing is realized, the glue outlet position can be flexibly adjusted during use, and the installation is convenient, the operation is simple, and the production cost is low.

[0026] 2. In the utility model, through the cooperation of the nozzle shell, connecting sleeve, throat fittings, fixing ring, nozzle, thermal insulation silicone sleeve, powder outer cavity, powder inner cavity, gas inner cavity, gas outer cavity, water cavity and other structures, the temperature of the material body can be maintained during discharge to prevent the material body from being too soft or too hard to affect the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a stereoscopic diagram of a 3D printer nozzle structure proposed by the utility model.

[0028] Figure 2 It is a schematic diagram of the internal structure of a connecting column of a 3D printer nozzle structure proposed by the utility model.

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0030] Figure 4 The utility model discloses a schematic diagram of the internal structure of a nozzle shell of a 3D printer nozzle structure.

[0031] In the figure, 1. nozzle housing; 2. mounting column; 3. fixing ring; 4. cavity; 5. limit plate; 6. spring; 7. rubber column; 8. slot; 9. card ball; 10. connecting column; 11. rubber plate; 12. threaded block; 13. cross groove; 14. connecting sleeve; 15. throat fitting; 16. fixing ring; 17. nozzle; 18. thermal insulation silicone sleeve; 19. powder outer cavity; 20. powder inner cavity; 21. gas inner cavity; 22. gas outer cavity; 23. water cavity. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0033] A 3D printer nozzle structure, referring to Figure 1-Figure 2 , including a nozzle housing 1. First, connect the connecting line to the top of the nozzle housing 1. The left and right sides of the top of the nozzle housing 1 are fixedly connected with mounting columns 2. The outside of the mounting columns 2 is slidably connected with a fixing ring 3. Align the top of the nozzle housing 1 with the bottom of the fixing ring 3. Then, forcefully push the mounting column 2 into the bottom of the fixing ring 3. Multiple cavities 4 are opened on the left and right sides of the bottom of the fixing ring 3. Telescopic components are arranged inside the multiple cavities 4.

[0034] Reference Figure 3 The telescopic assembly includes a limit plate 5, a spring 6 and a rubber column 7. When the mounting column 2 enters the bottom of the fixing ring 3, the rubber columns 7 around it will be squeezed. The outside of the limit plate 5 is slidably connected to the inside of the cavity 4. The movement of the rubber column 7 will push the limit plate 5 to move toward the inside of the cavity 4. The spring 6 is arranged inside the cavity 4. At this time, the limit plate 5 will squeeze the spring 6. One side of the rubber column 7 is fixedly connected to the outside of one side of the limit plate 5, and one end of the spring 6 is fixedly connected to one side of the inside of the cavity 4.

[0035] At this time, the spring 6 will be in a state of force compression. The other end of the spring 6 is fixedly connected to the side of the limit plate 5 away from the rubber column 7. The outside of the rubber column 7 is slidably connected to the inner wall of the cavity 4. The outside of the rubber column 7 is slidably connected to the internal through hole of the fixed ring 3. A plurality of slots 8 are provided on the outside of the mounting column 2. When the slot 8 is engaged with the rubber column 7, the outside of one end of the rubber column 7 is engaged with the inner wall of the slot 8. The spring 6 will release the external force absorbed during compression. At this time, the reaction force of the spring 6 pushes the rubber column 7 to engage with the slot 8 more tightly.

[0036] Reference Figure 2The top of the connecting column 10 is connected with a threaded block 12, and the top of the threaded block 12 is provided with a cross groove 13. When the angle needs to be fixed, the cross groove 13 is used to rotate the threaded block 12, and the bottom of the threaded block 12 contacts with the top of the rubber plate 11. At this time, the threaded block 12 moves inward and squeezes the rubber plate 11, and the rubber plate 11 contacts the ball 9, so that the space for the ball 9 to move is reduced, and the ball 9 can be fixed, thereby realizing the angle adjustment of the nozzle housing 1, and the glue outlet position can be flexibly adjusted during use, and it is convenient to install, simple to operate, and low in production cost.

[0037] Reference Figure 1 and Figure 4 , and then the raw material enters the interior of the nozzle housing 1 through the connecting line. The bottom of the nozzle housing 1 is fixedly connected with a connecting sleeve 14, and the bottom inner wall of the connecting sleeve 14 is fixedly connected with a throat fitting 15. A fixing ring 16 is arranged on the outside of the throat fitting 15, and a nozzle 17 is fixedly connected to the bottom of the fixing ring 16. Then, the raw material enters the interior of the nozzle 17 through the connecting sleeve 14 and the throat fitting 15. The outside of the nozzle 17 is fixedly connected with a thermal insulation silicone sleeve 18, and the bottom inner wall of the nozzle 17 is provided with a powder outer cavity 19. A protective component is provided at the bottom of the nozzle housing 1.

[0038] The protective component includes a powder inner cavity 20, a gas inner cavity 21, a gas outer cavity 22 and a water cavity 23. The outside of the powder inner cavity 20 is arranged inside the powder outer cavity 19, and then flows out through the powder outer cavity 19 and the powder inner cavity 20. The inside of the gas inner cavity 21 is fixedly connected to the outside of the powder inner cavity 20, and the gas is discharged through the gas inner cavity 21. The inside of the gas outer cavity 22 is fixedly connected to the outside of the gas inner cavity 21. The gas outer cavity 22 can dissipate heat around the nozzle 17. The inside of the water cavity 23 is fixedly connected to the outside of the gas outer cavity 22. The cooling water in the water cavity 23 can effectively reduce the temperature of the nozzle 17 and the printing area to prevent the resin from being over-cured or deformed.

[0039] The implementation principle of the embodiment of the present application is as follows: first, connect the connecting wire to the top of the nozzle housing 1, align the top of the nozzle housing 1 with the bottom of the fixing collar 3, and then forcefully push the mounting post 2 into the bottom of the fixing collar 3. When the mounting post 2 enters the bottom of the fixing collar 3, it will squeeze the rubber posts 7 around it. The movement of the rubber posts 7 will push the limit plate 5 to move toward the inside of the cavity 4. At this time, the limit plate 5 will squeeze the spring 6, and the spring 6 will be in a state of force compression. When the slot 8 is engaged with the rubber post 7, the spring 6 will release the external force absorbed during compression. At this time, the reaction force of the spring 6 pushes the rubber post 7 to engage more tightly with the slot 8. After the installation is completed, the nozzle housing 1 can be toggled in the direction to be adjusted. At this time, the card ball 9 will rotate inside the fixing collar 3 and the connecting post 10. Since the outer diameter of the card ball 9 is large The bottom diameter of the connecting column 10 is the same as that of the connecting column 10, so the card ball 9 will not fall off. When the angle needs to be fixed, the cross groove 13 is used to rotate the threaded block 12. At this time, the threaded block 12 will move inward and squeeze the rubber plate 11. The rubber plate 11 contacts the card ball 9, so that the space for the card ball 9 to move is reduced, and the card ball 9 can be fixed. Then, the raw material enters the interior of the nozzle housing 1 through the connecting line, and then enters the interior of the nozzle 17 through the connecting sleeve 14 and the throat pipe 15, and then flows out through the powder outer cavity 19 and the powder inner cavity 20. The gas is discharged through the gas inner cavity 21. The gas outer cavity 22 can dissipate heat around the nozzle 17. The cooling water in the water cavity 23 can effectively reduce the temperature of the nozzle 17 and the printing area to prevent the resin from being over-cured or deformed. It can maintain the temperature of the material body during discharge to prevent the material body from being too soft or too hard to affect the printing effect.

[0040] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A 3D printer nozzle structure, comprising a nozzle housing (1), characterized in that: The top left and right sides of the nozzle housing (1) are fixedly connected with mounting columns (2), the outside of the mounting columns (2) is slidably connected with a fixing collar (3), the bottom left and right sides of the fixing collar (3) are provided with a plurality of cavities (4), the insides of the plurality of cavities (4) are provided with telescopic components, the top of the fixing collar (3) is internally rotatably connected with a clamping ball (9), the outside of the clamping ball (9) is rotatably connected with a connecting column (10), the inside of the connecting column (10) is slidably connected with a rubber plate (11), the top of the connecting column (10) is internally threadedly connected with a threaded block (12), the bottom of the nozzle housing (1) is fixedly connected with a connecting sleeve (14), the bottom inner wall of the connecting sleeve (14) is fixedly connected with a throat fitting (15), and the bottom of the nozzle housing (1) is provided with a protective component.

2. A 3D printer nozzle structure according to claim 1, characterized in that: The telescopic assembly comprises a limit plate (5), a spring (6) and a rubber column (7); the outside of the limit plate (5) is slidably connected to the inside of the cavity (4); the spring (6) is arranged inside the cavity (4); and one side of the rubber column (7) is fixedly connected to the outside of one side of the limit plate (5).

3. A 3D printer nozzle structure according to claim 2, characterized in that: One end of the spring (6) is fixedly connected to one side of the interior of the cavity (4), and the other end of the spring (6) is fixedly connected to a side of the limiting plate (5) away from the rubber column (7).

4. A 3D printer nozzle structure according to claim 2, characterized in that: A plurality of slots (8) are provided on the outside of the installation column (2), and the outside of one end of the rubber column (7) is engaged with the inner wall of the slot (8).

5. A 3D printer nozzle structure according to claim 1, characterized in that: A cross groove (13) is provided on the top of the threaded block (12), and the bottom of the threaded block (12) is in contact with the top of the rubber plate (11).

6. A 3D printer nozzle structure according to claim 1, characterized in that: A fixing ring (16) is arranged outside the throat pipe (15), a nozzle (17) is fixedly connected to the bottom of the fixing ring (16), a heat-insulating silicone sleeve (18) is fixedly connected to the outside of the nozzle (17), and a powder outer cavity (19) is arranged on the inner wall of the bottom of the nozzle (17).

7. A 3D printer nozzle structure according to claim 6, characterized in that: The protective component comprises a powder inner cavity (20), a gas inner cavity (21), a gas outer cavity (22) and a water cavity (23); the outside of the powder inner cavity (20) is arranged inside the powder outer cavity (19); the inside of the gas inner cavity (21) is fixedly connected to the outside of the powder inner cavity (20); the inside of the gas outer cavity (22) is fixedly connected to the outside of the gas inner cavity (21); and the inside of the water cavity (23) is fixedly connected to the outside of the gas outer cavity (22).

8. A 3D printer nozzle structure according to claim 2, characterized in that: The outside of the rubber column (7) is slidably connected to the inner wall of the cavity (4), and the outside of the rubber column (7) is slidably connected to the internal through hole of the fixing ring (3).

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