A consumable feeding device for 3D printing

Abstract

The utility model relates to a printer technical field especially relates to a kind of consumables feeding device for 3D printing, including guide material cylinder and mounting plate, the mounting plate fixed mounting is in guide material cylinder end, and mounting plate is opened in and is used to the discharge outlet of material flow, the spiral conveying rod for the material in guide material cylinder to the discharge outlet is provided in guide material cylinder, five equidistantly arranged sliding slots are opened in the mounting plate, rack is slidably arranged in the sliding slot, the baffle for controlling the effective discharge orifice diameter of discharge outlet is arranged on the rack, cavity is opened in the mounting plate.The utility model makes five rotating gears synchronous rotation by the rotation of gear ring, makes rotating gear drive meshing connection's rack move in sliding slot towards the direction of discharge outlet, synchronously moves by rack drive baffle, the effective discharge orifice diameter of discharge outlet is controlled, the discharge amount of material is accurately controlled, avoid the discharge amount of material too much and lead to material waste.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a consumable feeding device for 3D printing. Background Technology

[0002] A 3D printer is a device that creates three-dimensional objects by depositing materials layer by layer. It can transform a digital three-dimensional model into a physical object.

[0003] Existing technologies, such as the feeding device for a 3D printer disclosed in publication number CN222291031U, use a motor to drive a spiral conveyor to rotate, facilitating material feeding. Rotating an adjusting bolt moves a baffle, and a telescopic plate structure extends and retracts to block material, thus controlling the output and preventing excessive material waste. However, the following problems exist in its use:

[0004] By moving the baffle and extending and retracting the telescopic plate, the size of the effective discharge space can be changed and the discharge rate can be adjusted. However, in use, the rectangular baffle cannot completely control the discharge amount of material inside the circular shell, which can easily lead to excessive material discharge and material waste. Utility Model Content

[0005] The purpose of this invention is to solve the problem of the inability to accurately control the amount of material output in the existing technology, and to propose a consumable feeding device for 3D printing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A filament feeding device for 3D printing includes a guide cylinder and a mounting plate. The mounting plate is fixedly installed at the end of the guide cylinder and has an outlet for material flow. The guide cylinder is provided with a spiral conveying rod for conveying material from the guide cylinder to the outlet. The mounting plate has five equidistant sliding grooves, and a rack is slidably arranged in each sliding groove. A baffle is provided on the rack for controlling the effective discharge diameter of the outlet. The mounting plate has a cavity, and a driving mechanism is provided in the cavity for driving the rack to slide towards the outlet in the sliding groove.

[0008] Preferably, the drive mechanism includes a gear ring rotatably mounted in the cavity, five rotating gears and a drive gear. The five rotating gears are equidistantly arranged in the cavity, and the five rotating gears are respectively meshed with the five racks. A servo motor fixedly mounted on the mounting plate and fixedly connected to the drive gear is also fixedly mounted on the mounting plate. Both the drive gear and the rotating gears are meshed with the gear ring.

[0009] Preferably, a circular slide rail is fixedly installed inside the cavity, and a circular slider is slidably disposed inside the slide rail, with the upper end of the slider being fixedly connected to a toothed ring.

[0010] Preferably, each of the five racks is fixedly mounted with a positioning pin, and the upper end of the positioning pin is fixedly connected to the bottom end of the baffle.

[0011] Preferably, the guide cylinder is provided with a feed pipe for feeding material into the guide cylinder, the outer wall of the servo motor is in contact with the outer wall of the guide cylinder, and a drive motor that is fixedly connected to the end of the spiral conveyor is fixedly installed on the side wall of the guide cylinder.

[0012] Preferably, all five racks are disposed on the upper part of the gear ring, and all five sliding grooves are connected to the cavity.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention uses the rotation of a gear ring to cause five rotating gears to rotate synchronously. The rotating gears drive the meshing rack to move towards the discharge port in the sliding groove. The rack drives the baffle to move synchronously, which facilitates the control of the effective discharge orifice diameter of the discharge port and the precise control of the material discharge amount, avoiding excessive material discharge and waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a consumable feeding device for 3D printing proposed in this utility model;

[0016] Figure 2 This is a front sectional view of a 3D printing consumable feeding device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting plate and discharge port of a 3D printing consumable feeding device proposed in this utility model;

[0018] Figure 4 This is a partial cross-sectional schematic diagram of a 3D printing consumable feeding device proposed in this utility model.

[0019] In the diagram: 1. Guide cylinder; 2. Feed pipe; 3. Drive motor; 4. Screw conveyor; 5. Mounting plate; 6. Discharge port; 7. Cavity; 8. Sliding groove; 9. Rack; 10. Positioning pin; 11. Servo motor; 12. Drive gear; 13. Slide rail; 14. Slider; 15. Gear ring; 16. Rotary gear; 17. Baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A 3D printing consumable feeding device includes a guide cylinder 1 and a mounting plate 5. The mounting plate 5 is fixedly installed at the end of the guide cylinder 1, and a discharge port 6 for material flow is opened in the mounting plate 5. A spiral conveying rod 4 for conveying the material in the guide cylinder 1 to the discharge port 6 is provided in the guide cylinder 1. Five equally spaced sliding grooves 8 are opened on the mounting plate 5. A rack 9 is slidably arranged in the sliding grooves 8. A baffle 17 for controlling the effective discharge diameter of the discharge port 6 is provided on the rack 9. A cavity 7 is opened in the mounting plate 5. A driving mechanism for driving the rack 9 to slide towards the discharge port 6 in the sliding grooves 8 is provided in the cavity 7.

[0022] The drive mechanism includes a gear ring 15 rotatably mounted in the cavity 7, five rotating gears 16 and a drive gear 12. The five rotating gears 16 are equidistantly arranged in the cavity 7 and are respectively meshed with five racks 9. A servo motor 11 fixedly mounted on the mounting plate 5 and fixedly connected to the drive gear 12 is also fixedly mounted on the mounting plate 5. Both the drive gear 12 and the rotating gears 16 are meshed with the gear ring 15.

[0023] A circular slide rail 13 is fixedly installed inside the cavity 7. A circular slider 14 is slidably arranged inside the slide rail 13. The upper end of the slider 14 is fixedly connected to the gear ring 15, so that the drive gear 12 can drive the gear ring 15 to rotate inside the cavity 7.

[0024] Each of the five racks 9 is fixedly mounted with a positioning pin 10. The upper end of the positioning pin 10 is fixedly connected to the bottom end of the baffle 17. The five baffles 17 are composed of a circular plate divided into five equal parts. When the five baffles 17 move toward the same point, the distance between the five baffles 17 will decrease, thereby controlling the rate at which the material flows out of the discharge port 6.

[0025] The feed tube 2 is provided on the feed cylinder 1 for feeding material into the feed cylinder 1. In order to avoid the servo motor 11 and the material from coming into contact with each other and affecting the service life of the servo motor 11, the outer wall of the servo motor 11 is attached to the outer wall of the feed cylinder 1. The drive motor 3 is fixedly installed on the side wall of the feed cylinder 1 and fixedly connected to the end of the screw conveyor 4.

[0026] To avoid the movement of the gear ring 15 and the rack 9 affecting each other, all five racks 9 are arranged on the upper part of the gear ring 15, and all five sliding grooves 8 are connected to the cavity 7, so that the gear ring 15 arranged in the cavity 7 can drive the rotating gear 16 to rotate.

[0027] The functional principle of this utility model can be explained through the following operation methods:

[0028] In use, by adding material into the feed pipe 2, the material enters the guide cylinder 1, and the drive motor 3 is turned on, so that the output end of the drive motor 3 drives the screw conveyor 4 to rotate, so that the material is transported towards the discharge port 6.

[0029] When it is necessary to adjust the material discharge rate, the servo motor 11 is turned on, causing the output end of the servo motor 11 to drive the drive gear 12 to rotate. The drive gear 12 drives the meshing gear ring 15 to rotate, causing the rotation of the gear ring 15 to drive the five rotating gears 16 to rotate synchronously. The five rotating gears 16 simultaneously drive the meshing rack 9 to slide in the sliding groove 8 toward the discharge port 6, causing the five racks 9 to simultaneously drive the five baffles 17 to move synchronously, causing the baffles 17 to reduce the effective discharge orifice diameter of the discharge port 6 and control the material discharge rate.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A filament feeding device for 3D printing, comprising a guide cylinder (1) and a mounting plate (5), characterized in that, The mounting plate (5) is fixedly installed at the end of the guide cylinder (1), and the mounting plate (5) has an outlet (6) for material flow. The guide cylinder (1) is provided with a spiral conveying rod (4) for conveying the material in the guide cylinder (1) to the outlet (6). The mounting plate (5) has five equally spaced sliding grooves (8). A rack (9) is slidably arranged in the sliding grooves (8). A baffle (17) for controlling the effective discharge diameter of the outlet (6) is provided on the rack (9). The mounting plate (5) has a cavity (7). A driving mechanism for driving the rack (9) to slide in the sliding grooves (8) toward the outlet (6) is provided in the cavity (7).

2. The consumable feeding device for 3D printing according to claim 1, characterized in that, The drive mechanism includes a gear ring (15) rotatably mounted in the cavity (7), five rotating gears (16) and a drive gear (12). The five rotating gears (16) are equidistantly arranged in the cavity (7). The five rotating gears (16) are respectively meshed with the five racks (9). A servo motor (11) fixedly connected to the drive gear (12) is fixedly mounted on the mounting plate (5). The drive gear (12) and the rotating gears (16) are both meshed with the gear ring (15).

3. The consumable feeding device for 3D printing according to claim 2, characterized in that, A circular slide rail (13) is fixedly installed inside the cavity (7), and a circular slider (14) is slidably arranged inside the slide rail (13). The upper end of the slider (14) is fixedly connected to the toothed ring (15).

4. A consumable feeding device for 3D printing according to claim 3, characterized in that, Each of the five racks (9) is fixedly equipped with a positioning pin (10), and the upper end of the positioning pin (10) is fixedly connected to the bottom end of the baffle (17).

5. A filament feeding device for 3D printing according to claim 4, characterized in that, The feed tube (2) is provided on the feed tube (1) for feeding material into the feed tube (1). The outer wall of the servo motor (11) is in contact with the outer wall of the feed tube (1). The side wall of the feed tube (1) is fixedly installed with a drive motor (3) that is fixedly connected to the end of the spiral conveyor (4).

6. A filament feeding device for 3D printing according to claim 5, characterized in that, All five racks (9) are located on the upper part of the gear ring (15), and all five sliding grooves (8) are connected to the cavity (7).

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