Feeding mechanism and 3D printer

Abstract

The utility model relates to the technical field of 3D printing, in particular to a feeding mechanism and a 3D printer, which comprise a mounting frame, a driving roller, a driven roller, a driving mechanism and a transmission mechanism, the driving roller is rotationally arranged in the mounting frame through a driving rod; the driven roller is rotationally arranged in the mounting frame through a driven rod and is parallel to the driving roller; the driving mechanism is arranged on the mounting frame, and the output end of the driving mechanism is in transmission connection with the driving rod; the transmission mechanism is arranged in the mounting frame, one end of the transmission mechanism is in transmission connection with the driven rod, and the other end of the transmission mechanism is in transmission connection with the driving mechanism. The driving mechanism and the transmission mechanism are arranged in a matched mode, it is guaranteed that enough friction force is kept between the driving roller and the driven roller and printing supplies, meanwhile, the transmission mechanism can drive the driven roller and the driving roller to rotate together, enough power is provided for conveying of the printing supplies, the phenomenon that the printing supplies are prone to slipping in the feeding process is avoided, and the printing supplies can be conveyed more stably. And the quality of the 3D printing piece is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, concretely relates to feeding mechanism and 3D printer. BACKGROUND

[0002] 3D printer is also called three-dimensional printer, and it is a kind of cumulative manufacturing technology, i.e. a kind of machine of rapid prototyping technology, it is a kind of three-dimensional object that is manufactured by printing layer by layer adherable material such as special wax material, powder-like metal or plastic based on digital model file, and the three-dimensional printer is used to manufacture products at present stage.

[0003] The Chinese patent with publication number CN111231324A discloses a kind of 3D printing feeding mechanism and 3D printer, the 3D printing feeding mechanism includes: shell;Ratchet wheel, the ratchet wheel is rotatably installed in the shell;Mounting piece, the mounting piece is fixed with the ratchet wheel, for the card of pay-off reel;Elastic damping device, the elastic damping device is connected with the ratchet wheel, for providing damping force to the rotation of the ratchet wheel;Conveying device, the conveying device is installed in the shell;Driving mechanism, the driving mechanism is connected with the conveying device, for driving the conveying device work to output the printing material;Locking mechanism, the locking mechanism is installed on the elastic damping device.Effective prevention is provided by the elastic damping device that pay-off reel rotates excessively, leading to printing material disorder, locking mechanism is simultaneously provided in the non-working state of driving mechanism to the elastic damping device, so that pay-off reel does not occur rotation.

[0004] However, the above technical scheme has the following deficiencies: the driven wheel is simply limited to the material under the action of the elastic expansion component, cannot provide power for the conveying of the material, and can only rely on the friction between the driving wheel and the material to provide power for the conveying of the material, resulting in the phenomenon of slipping during feeding, which affects the finished product quality of 3D printing. UTILITY MODEL CONTENT

[0005] The utility model aims at the problems in the background art, and provides a feeding mechanism and 3D printer.

[0006] The technical scheme of the utility model: on the one hand, the utility model provides a kind of feeding mechanism, including:

[0007] Mounting frame;

[0008] Driving roller, which is rotatably arranged in the mounting frame by a driving rod;

[0009] Driven roller, which is rotatably arranged in the mounting frame by a driven rod and is parallel to the driving roller;

[0010] A driving mechanism is provided on the mounting frame, wherein an output end of the driving mechanism is transmission-connected to the active rod;

[0011] The transmission mechanism is arranged in the installation frame, one end of the transmission mechanism is transmission-connected to the driven rod, and the other end of the transmission mechanism is transmission-connected to the driving mechanism.

[0012] Preferably, the driving mechanism includes a driving motor, a driving rod and a driving assembly; the driving motor is fixedly connected to the mounting frame, one end of the driving rod is transmission-connected to the output end of the driving motor, the other end of the driving rod passes through the mounting frame and extends to the interior of the mounting frame, one end of the driving assembly is transmission-connected to the driving rod, and the other end of the driving assembly is transmission-connected to the active rod.

[0013] Preferably, the driving assembly includes a driving wheel and a driven wheel; the driving wheel is arranged in the mounting frame and fixedly connected to the driving rod, the driven wheel is fixedly connected to the driving rod, and the driving wheel and the driven wheel are engaged with each other.

[0014] Preferably, the transmission mechanism includes a movable frame, a fitting spring and a transmission assembly; the movable frame is slidably arranged in the installation frame, one end of the driven rod is rotatably connected to the movable frame, a plurality of fitting springs are provided, one end of the fitting spring is fixedly connected to the movable frame, the other end of the fitting spring is fixedly connected to the installation frame, one end of the transmission assembly is transmission-connected to the driven rod, and the other end of the transmission assembly is transmission-connected to the driving mechanism.

[0015] Preferably, the transmission assembly includes a movable box, a guide cylinder, a first gear and a second gear; the movable box is fixedly connected to the movable frame, the driving rod passes through the movable box and the movable frame, the guide cylinder is rotatably set in the movable box, the guide cylinder is sleeved on the surface of the driving rod, the first gear is fixedly connected to the guide cylinder, one end of the driven rod extends to the interior of the movable box and is rotatably connected to the movable box, the second gear is rotatably set in the movable box, the second gear is fixedly connected to the driven rod, and the first gear and the second gear are engaged with each other.

[0016] On the other hand, the present invention also provides a 3D printer having the above-mentioned feeding mechanism, further comprising a mounting frame, wherein a workbench is provided inside the mounting frame, and the workbench is arranged in the mounting frame via a lifting unit;

[0017] The regulating unit is arranged in the mounting frame, and the mounting frame is fixedly connected to the output end of the regulating unit.

[0018] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0019] The utility model cooperates with the driving mechanism and the transmission mechanism. The driven roller cooperates with the active roller under the action of the fitting spring to clamp and limit the printing consumables. The active roller and the driven roller are in full contact with the printing consumables, thereby ensuring that sufficient friction is maintained between the active roller and the driven roller and the printing consumables. At the same time, the transmission mechanism can drive the driven roller and the active roller to rotate together, providing sufficient power for the transportation of the printing consumables, avoiding the slippage that is easy to occur during the feeding process, and ensuring the quality of 3D printed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of a feeding mechanism proposed in the present utility model;

[0021] Figure 2 This is a cross-sectional view of a feeding mechanism proposed in the present utility model;

[0022] Figure 3 This is a cross-sectional view of a transmission assembly in an embodiment of the present invention;

[0023] Figure 4 This is a 3D printed stereogram of an embodiment of the present invention.

[0024] Figure numerals: 1. Mounting frame; 2. Active roller; 3. Driving mechanism; 31. Driving motor; 32. Driving rod; 33. Driving assembly; 331. Driving wheel; 332. Driven wheel; 4. Transmission mechanism; 41. Movable frame; 42. Fitting spring; 43. Transmission assembly; 431. Movable box; 432. Guide cylinder; 433. First gear; 434. Second gear; 5. Active rod; 6. Driven roller; 7. Driven rod; 8. Mounting frame; 9. Workbench; 10. Lifting unit; 11. Adjustment unit. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figures 1-3 As shown, a feeding mechanism proposed by the present invention includes a mounting frame 1, an active roller 2, a driven roller 6, a driving mechanism 3 and a transmission mechanism 4;

[0027] The active roller 2 is rotatably arranged in the mounting frame 1 through the active rod 5;

[0028] The driven roller 6 is rotatably arranged in the mounting frame 1 through the driven rod 7 and is parallel to the driving roller 2;

[0029] The driving mechanism 3 is arranged on the mounting frame 1, and the output end of the driving mechanism 3 is transmission-connected to the active rod 5;

[0030] The transmission mechanism 4 is disposed in the installation frame 1 , one end of the transmission mechanism 4 is transmission-connected to the driven rod 7 , and the other end of the transmission mechanism 4 is transmission-connected to the driving mechanism 3 .

[0031] As Figures 1-2 shown, the driving mechanism 3 includes a driving motor 31, a driving rod 32 and a driving assembly 33; the driving motor 31 is fixedly connected with the mounting frame 1, the driving motor 31 is a variable frequency motor, and is connected with a control system and a power supply through wires; one end of the driving rod 32 is in transmission connection with an output end of the driving motor 31, the other end of the driving rod 32 penetrates through the mounting frame 1 and extends to the inside of the mounting frame 1, one end of the driving assembly 33 is in transmission connection with the driving rod 32, and the other end of the driving assembly 33 is in transmission connection with the driving rod 5; the driving assembly 33 includes a driving wheel 331 and a driven wheel 332; the driving wheel 331 is arranged in the mounting frame 1 and is fixedly connected with the driving rod 32, the driven wheel 332 is fixedly connected with the driving rod 5, and the driving wheel 331 and the driven wheel 332 are in meshing with each other.

[0032] As Figures 2-3 shown, the transmission mechanism 4 includes a movable frame 41, a plurality of fitting springs 42 and a transmission assembly 43; the movable frame 41 is slidingly arranged in the mounting frame 1, one end of the driven rod 7 is in rotational connection with the movable frame 41, the fitting springs 42 are arranged in a plurality of, one end of the fitting spring 42 is fixedly connected with the movable frame 41, the other end of the fitting spring 42 is fixedly connected with the mounting frame 1, one end of the transmission assembly 43 is in transmission connection with the driven rod 7, and the other end of the transmission assembly 43 is in transmission connection with the driving mechanism 3; the transmission assembly 43 includes a movable box 431, a guide cylinder 432, a first gear 433 and a second gear 434; the movable box 431 is fixedly connected with the movable frame 41, the driving rod 32 penetrates through the movable box 431 and the movable frame 41, the guide cylinder 432 is rotatably arranged in the movable box 431, the guide cylinder 432 is sleeved on the surface of the driving rod 32, the first gear 433 is fixedly connected with the guide cylinder 432, one end of the driven rod 7 extends to the inside of the movable box 431 and is in rotational connection with the movable box 431, the second gear 434 is rotatably arranged in the movable box 431, the second gear 434 is fixedly connected with the driven rod 7, and the first gear 433 and the second gear 434 are in meshing with each other.

[0033] Example two

[0034] As Figure 1 shown, the utility model also proposes a kind of 3D printer with above-mentioned feeding mechanism, still include mounting bracket 8 and adjusting unit 11;

[0035] Mounting bracket 8 inside is provided with workbench 9, workbench 9 is arranged in mounting bracket 8 by lifting unit 10, and lifting unit is used to adjust the height of workbench 9;

[0036] The adjusting unit 11 is arranged in the mounting frame 8, the mounting frame 1 is fixedly connected with the output end of the adjusting unit 11, the outlet of the feeding mechanism is provided with a discharging nozzle for 3D printing, the adjusting unit 11 is used for adjusting the position of the discharging nozzle on the horizontal plane, and the adjusting unit 11 cooperates with the lowering unit 10 to realize printing in the 3D space.

[0037] The printing material is firstly passed through between the driving roller 2 and the driven roller 6, the driven roller 6 is clamped and limited to the printing material in cooperation with the driving roller 2 under the action of the abutting spring 42, during the printing process, the driving motor 31 works to drive the driving roller 331, the guide cylinder 432 and the first gear 433 to rotate together, the driving roller 331 rotates to drive the driven roller 332, the driving rod 5 and the driving roller 2 to rotate together through the meshing action, the first gear 433 rotates to drive the second gear 434, the driven rod 7 and the driven roller 6 to rotate together through the meshing action, the driving roller 2 and the driven roller 6 rotate to feed at the same time, during the printing process, the feeding structure is driven by the adjusting unit 11 to move along the predetermined track to print.

[0038] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, various changes can be made within the knowledge range possessed by the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A feed mechanism characterized by, The utility model relates to a kind of automatic feeding device, including: Mounting frame (1); Driving roller (2) is rotationally arranged in mounting frame (1) by driving rod (5); Driven roller (6) is rotationally arranged in mounting frame (1) and is mutually parallel with driving roller (2) by driven rod (7); Driving mechanism (3) is arranged on mounting frame (1), and the output end of driving mechanism (3) is drivingly connected with driving rod (5); Transmission mechanism (4) is arranged in mounting frame (1), and one end of transmission mechanism (4) is drivingly connected with driven rod (7), and the other end of transmission mechanism (4) is drivingly connected with driving mechanism (3).

2. A feed mechanism according to claim 1, wherein Driving mechanism (3) includes driving motor (31), driving rod (32) and driving assembly (33);Driving motor (31) is fixedly connected with mounting frame (1), one end of driving rod (32) is drivingly connected with the output end of driving motor (31), the other end of driving rod (32) penetrates mounting frame (1) and extends to the inside of mounting frame (1), one end of driving assembly (33) is drivingly connected with driving rod (32), and the other end of driving assembly (33) is drivingly connected with driving rod (5).

3. A feed mechanism according to claim 2, wherein Driving assembly (33) includes driving wheel (331) and driven wheel (332);Driving wheel (331) is arranged in mounting frame (1) and is fixedly connected with driving rod (32), and driven wheel (332) is fixedly connected with driving rod (5), and driving wheel (331) is mutually engaged with driven wheel (332).

4. A feed mechanism according to claim 3, wherein Transmission mechanism (4) includes movable frame (41), fit spring (42) and transmission assembly (43);Movable frame (41) is slidingly arranged in mounting frame (1), one end of driven rod (7) is rotationally connected with movable frame (41), fit spring (42) is arranged with multiple, one end of fit spring (42) is fixedly connected with movable frame (41), the other end of fit spring (42) is fixedly connected with mounting frame (1), one end of transmission assembly (43) is drivingly connected with driven rod (7), and the other end of transmission assembly (43) is drivingly connected with driving mechanism (3).

5. A feed mechanism according to claim 4, wherein Transmission assembly (43) includes movable box (431), guide cylinder (432), first gear (433) and second gear (434);Movable box (431) is fixedly connected with movable frame (41), and driving rod (32) penetrates movable box (431) and movable frame (41), guide cylinder (432) is rotationally arranged in movable box (431), guide cylinder (432) is sleeved on the surface of driving rod (32), first gear (433) is fixedly connected with guide cylinder (432), one end of driven rod (7) extends to the inside of movable box (431) and is rotationally connected with movable box (431), second gear (434) is rotationally arranged in movable box (431), second gear (434) is fixedly connected with driven rod (7), and first gear (433) and second gear (434) are mutually engaged.

6. A 3D printer comprising the feed mechanism of any one of claims 1-5, characterized in that, Also include Mounting rack (8) is internally provided with workbench (9), and workbench (9) is arranged in mounting rack (8) by lifting unit (10); The adjusting unit (11) is arranged in the mounting frame (8), and the mounting frame (1) is fixedly connected with the output end of the adjusting unit (11).

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