A 3D printing material feeding and withdrawing mechanism

Abstract

The utility model provides a kind of 3D printing consumable feeding and withdrawing mechanism, including the mount of sliding connection on support, for installing printing consumable on support, and the top surface of mount is fixedly connected first installation cover, and two connecting shafts are rotatably connected in first installation cover;And the connecting shaft in first installation cover is coaxially fastened with guide roller, the upper end of connecting shaft is penetrated to the top of first installation cover and is coaxially connected driving gear, driven gear respectively, and driving gear, driven gear are engagedly connected;And the connecting shaft top connected with driving gear is connected with servo motor, the both sides of first installation cover are connected guide pipe, and consumable passes through between one side guide pipe, two guide rollers and the other side guide pipe in sequence.The utility model can realize the synchronous rotation of two guide rollers by the control of servo motor, and further realizes the stable transportation of consumable, guarantees the automatic material withdrawal and feeding of consumable, and also can guarantee the stability of consumable transportation.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a feeding and unloading mechanism for 3D printing consumables. Background Technology

[0002] 3D printing technology is an advanced manufacturing technology that integrates mechanical, electrical, computer, numerical control and advanced materials technologies. It has overturned the traditional "subtraction" processing technology and realized "additive manufacturing", which can process more complex parts and is therefore known as the "Third Industrial Revolution".

[0003] Existing 3D printing equipment typically uses filaments wound around a roller-shaped feed tray. The extrusion mechanism applies tension to the filament during extrusion, causing the feed tray to rotate and transport the filament to the extrusion mechanism for application. However, filament ejection is mostly done manually or automatically, both of which require manual removal of the filament end from the machine, failing to achieve automatic ejection and causing operational inconvenience. Therefore, we propose a 3D printing filament feeding and ejection mechanism. Utility Model Content

[0004] When performing material ejection operations on existing consumables, the end of the consumable needs to be manually pulled out of the machine. This not only fails to achieve automatic material ejection but also causes inconvenience to the operation. This utility model provides a material feeding and ejection mechanism for 3D printing consumables, which facilitates automatic material ejection and ensures stable material feeding, greatly improving the practicality of the device and solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: a feeding and unloading mechanism for 3D printing consumables includes a mounting base slidably connected to a bracket, the bracket for mounting printing consumables, a first mounting cover fixedly connected to the top surface of the mounting base, and two connecting shafts rotatably connected inside the first mounting cover; and a guide roller is coaxially and tightly attached to the connecting shaft located inside the first mounting cover, the upper end of the connecting shaft extends through to the top of the first mounting cover and is coaxially connected to a driving gear and a driven gear respectively, the driving gear and the driven gear meshing with each other; and the top of the connecting shaft connected to the driving gear is connected to a servo motor, the servo motor is connected to the first mounting cover through a motor mount, and guide tubes are connected to both sides of the first mounting cover, and the consumables pass sequentially through one guide tube, between the two guide rollers, and through the other guide tube.

[0006] Optionally, a concave surface is formed on the outer wall of the guide roller along the circumferential direction, and the consumable passes between two concave surfaces.

[0007] Optionally, a displacement sensor is fixedly connected to the inner top surface of the first mounting cover, and the displacement sensor is located between the two guide rollers.

[0008] Optionally, a slide rail is secured to the bracket, and a sliding seat is slidably connected to the slide rail, securing the mounting base to the top of the sliding seat.

[0009] Optionally, a second mounting cover is fixedly connected to the top of the first mounting cover, and the servo motor, the drive gear, and the driven gear are all located inside the second mounting cover.

[0010] Optionally, the second mounting cover has multiple heat dissipation holes.

[0011] Compared with the prior art, this utility model, through the control of the servo motor and the meshing connection of the driven gear and the driving gear, can realize the synchronous rotation of the two guide rollers, effectively achieving stable transportation of consumables. This not only facilitates the automatic unloading of consumables, but also ensures the stable feeding of consumables, greatly improving the practicality of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] Figure 3 This is a connection diagram of the displacement sensor and the first mounting cover of this utility model.

[0016] In the figure: 1. First mounting cover; 2. Second mounting cover; 3. Sliding seat; 4. Guide tube; 5. Slide rail; 6. Bracket; 7. Servo motor; 8. Heat dissipation hole; 9. Driven gear; 10. Drive gear; 11. Guide roller; 12. Connecting shaft; 13. Concave surface; 14. Displacement sensor; 15. Mounting seat. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1 to 3 This utility model provides a technical solution: a 3D printing consumable feeding and unfeeding mechanism, including a mounting base 15 slidably connected to a bracket 6, the bracket 6 being used to mount printing consumables, such as... Figure 1 , 2 As shown, in order to achieve stable sliding of the mounting base 15, the slide rail 5 is fastened to the bracket 6, and the slide seat 3 is slidably connected to the slide rail 5. The mounting base 15 is fastened to the top of the slide seat 3. With the cooperation of the slide seat and the slide rail 5, it can slide according to the use of consumables, avoiding excessive tension that could cause the consumables to break, and ensuring stable printing.

[0019] like Figure 2 , 3 As shown, a first mounting cover 1 is fixedly connected to the top surface of the mounting base 15, and two connecting shafts 12 are rotatably connected inside the first mounting cover 1. A guide roller 11 is coaxially fastened on the connecting shaft 12 located inside the first mounting cover 1. The upper end of the connecting shaft 12 extends through to the top of the first mounting cover 1 and is coaxially connected to the driving gear 10 and the driven gear 9, respectively. The driving gear 10 and the driven gear 9 are meshed together. The top of the connecting shaft 12 connected to the driving gear 10 is connected to the servo motor 7. The servo motor 7 is connected to the first mounting cover 1 through the motor base. In actual use, the consumables can be transported by the servo motor 7. The consumables can be transported during feeding and unloading, which not only facilitates the automatic unloading of consumables, but also ensures the stable feeding of consumables, greatly improving the practicality of the device.

[0020] like Figure 2 , 3 As shown, guide tubes 4 are connected to both sides of the first mounting cover 1. When installing consumables, the consumables pass through one guide tube 4, between the two guide rollers 11, and through the other guide tube 4 in sequence. At the same time, in order to improve the overall stability when the consumables move, a concave surface 13 is opened on the outer wall of the guide roller 11 along the circumferential direction. The consumables pass between the two concave surfaces 13, and an anti-slip pad is connected to the surface of the concave surface 13. This can further improve the friction between the consumables and the concave surface 13, and thus further ensure the stable transportation of the consumables. In summary, the feeding and unfeeding mechanism of this 3D printing consumable, when in use, such as... Figure 3As shown, a displacement sensor 14 is fixedly connected to the inner top surface of the first mounting cover 1, and the displacement sensor 14 is located between the two guide rollers 11. The displacement sensor 14 and the servo motor 7 are both connected to the 3D printer, so that the length of the material movement can be monitored, and the length of the material withdrawal can be detected when the material is withdrawn, which brings great convenience to the material withdrawal operation. In addition, to protect the servo motor 7 and gears, a second mounting cover 2 is fixedly connected to the top of the first mounting cover 1. The servo motor 7, driven gear 9, and driving gear 10 are all located inside the second mounting cover 2. The second mounting cover 2 is provided with multiple heat dissipation holes 8, which is conducive to the rapid heat dissipation of the servo motor 7 and can extend the service life of the device.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feeding and unloading mechanism for 3D printing consumables, comprising a mounting base (15) slidably connected to a bracket (6), the bracket (6) being used to mount the printing consumables, characterized in that, The first mounting cover (1) is fixedly connected to the top surface of the mounting base (15), and two connecting shafts (12) are rotatably connected inside the first mounting cover (1). And the guide roller (11) is coaxially fastened on the connecting shaft (12) located inside the first mounting cover (1). The upper end of the connecting shaft (12) extends through to the top of the first mounting cover (1) and is coaxially connected to the driving gear (10) and the driven gear (9) respectively. The driving gear (10) and the driven gear (9) are meshed together. The top of the connecting shaft (12) connected to the active gear (10) is connected to the servo motor (7). The servo motor (7) is connected to the first mounting cover (1) through the motor base. The first mounting cover (1) is connected to guide tubes (4) on both sides. The consumables pass through the guide tube (4) on one side, between the two guide rollers (11) and the guide tube (4) on the other side in sequence.

2. The feeding and unloading mechanism for 3D printing consumables as described in claim 1, characterized in that, A concave surface (13) is opened on the outer wall of the guide roller (11) along the circumferential direction, and the consumable passes between the two concave surfaces (13).

3. The feeding and unloading mechanism for 3D printing consumables as described in claim 2, characterized in that, A displacement sensor (14) is fixedly connected to the inner top surface of the first mounting cover (1), and the displacement sensor (14) is located between two guide rollers (11).

4. The feeding and unloading mechanism for 3D printing consumables as described in any one of claims 1-3, characterized in that, Secure the slide rail (5) to the bracket (6) and slide the slide seat (3) on the slide rail (5) to secure the mounting seat (15) to the top of the slide seat (3).

5. The feeding and unloading mechanism for 3D printing consumables as described in claim 4, characterized in that, The top of the first mounting cover (1) is fixedly connected to the second mounting cover (2), and the servo motor (7), the driving gear (10) and the driven gear (9) are all located inside the second mounting cover (2).

6. The feeding and unloading mechanism for 3D printing consumables as described in claim 5, characterized in that, The second mounting cover (2) has multiple heat dissipation holes (8).

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