3D printing nozzle feeding device

Abstract

The utility model discloses a 3D printing spray head feeding device, and relates to the technical field of 3D printing, in particular to the 3D printing spray head feeding device which comprises a shell, the top of the shell is in sliding connection with a first guide pipe, the bottom of the shell is fixedly connected with a second guide pipe, the inner wall of one side of the shell is in sliding connection with two moving plates, and the side faces of the moving plates are rotationally connected with feeding shafts; and the top of one moving plate is fixedly connected with a motor. According to the feeding mechanism, when the wire is conveyed, only the knob needs to be rotated, then the first guide pipe is pressed to enable the first guide pipe and the second guide pipe to be in butt joint, so that the wire can enter the hose and be conveyed, and the problem that when most feeding mechanisms of 3D printers clamp materials, due to the fact that the wire is soft, the wire cannot be conveyed easily is effectively solved. And the problem that a user only can pass through a feeding mechanism to enable the wire to enter a hose and then enter a spray head for printing due to time-consuming and difficult operation is solved.

Description

Technical Field

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

[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] When loading the nozzle of a current 3D printer, the material needs to be passed into the feeding mechanism, which then transports the material. However, since the wire is relatively soft, the feeding mechanism of most 3D printers is time-consuming and difficult for users to pass the wire through the feeding mechanism so that the wire enters the hose and then enters the nozzle for printing.

[0004] A 3D printing nozzle feeding device disclosed in the Chinese utility model patent application disclosure specification CN202023017689.9 includes a shell, and a slide is provided inside the shell. The number of the slides is two, and the two slides are symmetrically distributed about the longitudinal center line of the inner bottom wall of the shell. Although the 3D printing nozzle feeding device solves the current problem that the slender hose of the 3D printer causes people to be time-consuming and difficult to operate each time when feeding, the 3D printing nozzle feeding device has the disadvantage that when conveying wires of different thicknesses, it takes a lot of time to adjust the position between the internal parts of the feeding mechanism in order to contact and convey the wires of different thicknesses. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the present invention provides a 3D printing nozzle feeding device, which solves the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: it includes a shell, the top of the shell is slidably connected to a first guide tube, the bottom of the shell is fixedly connected to a second guide tube, one side inner wall of the shell is slidably connected to two movable plates, the side of the movable plate is rotatably connected to a feeding shaft, the top of one of the movable plates is fixedly connected to a motor, the outer side of the first guide tube is fixedly connected to a limiting block, the top of the shell is fixedly connected to a positioning plate, and the inside of the positioning plate is slidably connected to a sliding rod.

[0009] Optionally, a support rod is fixedly connected between the inner walls of both sides of the shell, a moving block is slidably connected to the outer side of the support rod, a fixed plate is fixedly connected to the side of the moving block, and both ends of the fixed plate are rotatably connected to the second gear.

[0010] Optionally, one end of the feeding shaft away from the movable plate is rotatably connected to a first gear, and the two second gears are meshed and connected to each other, and the two second gears are respectively meshed and connected to the two first gears.

[0011] Optionally, the top of the first gear is rotatably connected to a first connecting rod, and the ends of the two first connecting rods away from the first gear are rotatably connected to two second gears respectively.

[0012] Optionally, two support plates are fixedly connected to the outer side of the first guide tube, the top of the support plate is rotatably connected to a second connecting rod, and the ends of the two second connecting rods away from the support plate are rotatably connected to two movable plates respectively.

[0013] Optionally, the output shaft of the motor and the top of one of the first gears are fixedly connected to a synchronous pulley, and a transmission belt is connected between the two synchronous pulleys.

[0014] Optionally, a plurality of limiting grooves are provided inside the limiting block, and one end of the sliding rod is fixedly connected to a limiting frame adapted to the limiting grooves.

[0015] Optionally, the top of the limiting frame is rotatably connected to a cam, and the top of the cam is fixedly connected to a knob.

[0016] (3) Beneficial effects

[0017] The utility model provides a 3D printing nozzle feeding device, which has the following beneficial effects:

[0018] 1. The 3D printing nozzle feeding device, through the arrangement of the first guide tube, the second guide tube, the movable plate, the support plate, the second connecting rod, the cam, the knob, the slide bar, the positioning plate, the limit frame, the limit block and the limit groove, enables the device to convey the wire by simply rotating the knob and then pressing the first guide tube to connect the first guide tube and the second guide tube, so that the wire can enter the interior of the hose and be conveyed. This effectively solves the problem that when the feeding mechanism of most 3D printers clamps the material, due to the soft wire, the user is more time-consuming and difficult to operate to pass the wire through the feeding mechanism so that the wire enters the interior of the hose and then enters the nozzle for printing.

[0019] 2. The 3D printing nozzle feeding device, through the arrangement of the support rod, the movable block, the fixed plate, the first gear, the second gear, the first connecting rod, the movable plate and the second connecting rod, enables the device to adjust the feeding according to the size of the wire only when the wire is inserted, and the effect of adjusting the size of the parts between the feeding mechanism can be completed. This effectively solves the problem that when conveying wires of different thicknesses, it takes a lot of time to adjust the position between the internal parts of the feeding mechanism so that it can contact and convey wires of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model from an axial perspective;

[0021] Figure 2 This is a schematic structural diagram of the utility model in axial section;

[0022] Figure 3 This is a schematic diagram of the structure of the utility model in a front cross-sectional view;

[0023] Figure 4 For this utility model Figure 1 A schematic diagram of the structure enlarged at point A;

[0024] Figure 5 This is a schematic structural diagram of the utility model in a side axial section;

[0025] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at point B.

[0026] In the figure: 1. Shell; 2. First guide tube; 3. Second guide tube; 4. Moving plate; 5. Feed shaft; 6. First gear; 7. Support rod; 8. Moving block; 9. Fixed plate; 10. Second gear; 11. First connecting rod; 12. Support plate; 13. Second connecting rod; 14. Motor; 15. Synchronous pulley; 16. Transmission belt; 17. Limit block; 18. Limit groove; 19. Positioning plate; 20. Slide rod; 21. Limit frame; 22. Cam; 23. Knob. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1

[0029] See also Figures 1 to 4The utility model provides a technical solution: a 3D printing nozzle feeding device, including a shell 1, a first guide tube 2 is slidably connected to the top of the shell 1, a second guide tube 3 is fixedly connected to the bottom of the shell 1, two movable plates 4 are slidably connected to the inner wall of one side of the shell 1, the outer side of the first guide tube 2 is fixedly connected to two support plates 12, the top of the support plate 12 is rotatably connected to the second connecting rod 13, the two second connecting rods 13 are rotatably connected to the two movable plates 4 at one end away from the support plate 12, and the side of the movable plate 4 is rotatably connected to the feeding shaft 5, one of the tops of the movable plates 4 is fixedly connected to the motor 14, the outer side of the first guide tube 2 is fixedly connected to the limiting block 17, the top of the shell 1 is fixedly connected to the positioning plate 19, the interior of the positioning plate 19 is slidably connected to the sliding rod 20, the interior of the limiting block 17 is provided with a plurality of limiting grooves 18, and one end of the sliding rod 20 is fixed A limit frame 21 is fixedly connected to the limit groove 18, and a cam 22 is rotatably connected to the top of the limit frame 21. A knob 23 is fixedly connected to the top of the cam 22. Through the arrangement of the first guide tube 2, the second guide tube 3, the movable plate 4, the support plate 12, the second connecting rod 13, the cam 22, the knob 23, the slide bar 20, the positioning plate 19, the limit frame 21, the limit block 17 and the limit groove 18, the device only needs to rotate the knob 23 when conveying the wire, and then press the first guide tube 2 to make the first guide tube 2 and the second guide tube 3 dock, so that the wire can enter the inside of the hose and be conveyed. This effectively solves the problem that when the feeding mechanism of most 3D printers clamps the material, due to the soft wire, the user is more time-consuming and difficult to operate to pass the wire through the feeding mechanism so that the wire enters the inside of the hose and then enters the nozzle for printing.

[0030] When in use, press the first guide tube 2 to dock the first guide tube 2 and the second guide tube 3. When the first guide tube 2 moves, the second connecting rod 13 pushes the movable plate 4 to move, thereby increasing the distance between the two feeding shafts 5. Then the wire can be passed through the first guide tube 2 and the second guide tube 3 into the interior of the hose, and then the first guide tube 2 is pulled out to make the feeding shaft 5 contact with the wire, and then the knob 23 is rotated to rotate the cam 22. After the cam 22 rotates, it contacts the positioning plate 19 and pushes the limit frame 21 to move. After moving, the limit frame 21 enters the interior of the limit groove 18 to limit the first guide tube 2. This effectively solves the problem that when the feeding mechanism of most 3D printers clamps the material, due to the soft wire, it takes a lot of time and is difficult for the user to pass the wire through the feeding mechanism so that the wire enters the interior of the hose and then enters the nozzle for printing.

[0031] Example 2

[0032] See also Figures 5 and 6The utility model provides a technical solution: a 3D printing nozzle feeding device, a support rod 7 is fixedly connected between the inner walls of both sides of the shell 1, and a moving block 8 is slidably connected to the outer side of the support rod 7. The side of the moving block 8 is fixedly connected to a fixed plate 9, and both ends of the fixed plate 9 are rotatably connected to the second gear 10. The end of the feeding shaft 5 away from the moving plate 4 is rotatably connected to the first gear 6, and the two second gears 10 are meshed with each other. The two second gears 10 are respectively meshed with the two first gears 6. The top of the first gear 6 is rotatably connected to the first connecting rod 11, and the ends of the two first connecting rods 11 away from the first gear 6 are respectively rotatably connected to the two second gears 10. The output of the motor 14 The output shaft and the top of one of the first gears 6 are fixedly connected with a synchronous pulley 15, and a transmission belt 16 is connected between the two synchronous pulleys 15. Through the arrangement of the support rod 7, the moving block 8, the fixed plate 9, the first gear 6, the second gear 10, the first connecting rod 11, the moving plate 4 and the second connecting rod 13, the device can adjust the size of the parts between the feeding mechanism only when the wire is put in when adjusting the feeding according to the size of the wire. It effectively solves the problem that when conveying wires of different thicknesses, it takes a lot of time to adjust the position between the internal parts of the feeding mechanism so that it can contact and convey wires of different thicknesses.

[0033] During use, when the first guide tube 2 is raised, the rising amplitude of the first guide tube 2 is adjusted according to the size of the wire. When the first guide tube 2 is raised, the movable plate 4 can be pulled to move by the second connecting rod 13, so that the feeding shaft 5 contacts the wire. After the wire contact is completed, the first guide tube 2 can be fixed. When the feeding shaft 5 moves, the distance between the two first gears 6 changes, and the first connecting rod 11 pushes the two second gears 10 to move, so that the fixed plate 9 drives the movable block 8 to move. At this time, due to the fixed plate 9, the two second gears 10 are always engaged with each other. Therefore, when the distance between the two feeding shafts 5 is different, the two first gears 6 always rotate in opposite directions through the second gear 10, thereby conveying the wire. After that, the first gear 6 can drive the feeding shaft 5 to rotate through the motor 14 and the synchronous pulley 15, which effectively solves the problem that it takes a lot of time to adjust the position between the internal parts of the feeding mechanism when conveying wires of different thicknesses in order to contact and convey them.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 3D printing nozzle feeding device, comprising a housing (1), characterized in that: The top of the shell (1) is slidably connected to a first guide tube (2), the bottom of the shell (1) is fixedly connected to a second guide tube (3), one side inner wall of the shell (1) is slidably connected to two movable plates (4), the side of the movable plates (4) is rotatably connected to a feed shaft (5), the top of one of the movable plates (4) is fixedly connected to a motor (14), the outer side of the first guide tube (2) is fixedly connected to a limiting block (17), the top of the shell (1) is fixedly connected to a positioning plate (19), and the interior of the positioning plate (19) is slidably connected to a slide rod (20).

2. The 3D printing nozzle feeding device according to claim 1, characterized in that: A support rod (7) is fixedly connected between the inner walls of both sides of the housing (1), a moving block (8) is slidably connected to the outer side of the support rod (7), a fixed plate (9) is fixedly connected to the side of the moving block (8), and both ends of the fixed plate (9) are rotatably connected to a second gear (10).

3. The 3D printing nozzle feeding device according to claim 2, characterized in that: One end of the feeding shaft (5) away from the moving plate (4) is rotatably connected to the first gear (6), the two second gears (10) are meshed and connected to each other, and the two second gears (10) are respectively meshed and connected to the two first gears (6).

4. The 3D printing nozzle feeding device according to claim 3, characterized in that: The top of the first gear (6) is rotatably connected to a first connecting rod (11), and the ends of the two first connecting rods (11) away from the first gear (6) are rotatably connected to two second gears (10) respectively.

5. The 3D printing nozzle feeding device according to claim 1, characterized in that: Two support plates (12) are fixedly connected to the outside of the first guide tube (2), the top of the support plate (12) is rotatably connected to a second connecting rod (13), and the ends of the two second connecting rods (13) away from the support plate (12) are rotatably connected to the two movable plates (4).

6. The 3D printing nozzle feeding device according to claim 1, characterized in that: The output shaft of the motor (14) and the top of one of the first gears (6) are both fixedly connected to a synchronous pulley (15), and a transmission belt (16) is connected between the two synchronous pulleys (15).

7. The 3D printing nozzle feeding device according to claim 1, characterized in that: A plurality of limiting grooves (18) are provided inside the limiting block (17), and one end of the sliding rod (20) is fixedly connected to a limiting frame (21) adapted to the limiting grooves (18).

8. The 3D printing nozzle feeding device according to claim 7, characterized in that: The top of the limiting frame (21) is rotatably connected to a cam (22), and the top of the cam (22) is fixedly connected to a knob (23).

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