A printing material conveying device of a 3D printer

Abstract

The utility model relates to mechanical engineering field discloses a kind of printing material conveying devices of 3D printer, including shell, arc-shaped guide slot is set in the both sides of shell, the shaft one is fixedly connected with in shell, the linkage lever is rotatably connected with outside the shaft one, the counterweight is fixedly connected with linkage lever one end, the long shaft is fixedly connected with linkage lever other end, the pressure wheel is rotatably connected with outside the long shaft, the driving pulley is rotatably connected with inside the shell, the supporting plate is fixedly connected with outside the shell, the motor is fixedly connected with the supporting plate top portion in the utility model, the device can be self-adapting adjustment to the compactness of different size wire, without manual adjustment, with the cooperation of relevant structure, the cooperation state of pressure wheel and driving pulley can be automatically adjusted according to wire thickness, effectively avoid the situation that wire is damaged due to improper manual adjustment, reduce the time consumption in the adjustment process, help to improve overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to a printing material conveying device for a 3D printer. Background Technology

[0002] The filament delivery system of a 3D printer is a core component for realizing fused deposition modeling (FDM) technology, and its design directly affects print quality and efficiency. In the context of this advancement, with the widespread application of FDM technology in both consumer and industrial sectors, and brands like Stratasys promoting filament printing, precise filament delivery control has become crucial for ensuring accurate layer-by-layer deposition. This system is primarily used in industries such as consumer electronics, automotive manufacturing, and education and research, for example, in the mass production of protective accessories for action cameras, the printing of lightweight automotive structural components, and rapid prototyping of models in educational settings. Currently available 3D printers require adjustments to the pressure rollers when handling filaments of different sizes to prevent damage. However, controlling the pressure during these adjustments is difficult, impacting work efficiency. Furthermore, replacing filaments when they run out is a complex process. Therefore, this paper proposes a new 3D printer material feeding device to address these issues. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a printing material feeding device for a 3D printer, which aims to improve the problems of difficult adjustment of pressure roller force and complicated material replacement process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a printing material conveying device for a 3D printer, comprising a housing, with arc-shaped guide grooves on both sides of the housing, a rotating shaft fixedly connected to each side of the housing, a linkage rod rotatably connected to the outside of the rotating shaft, a counterweight fixedly connected to one end of the linkage rod, a long shaft fixedly connected to the other end of the linkage rod, a pressure roller rotatably connected to the outside of the long shaft, a drive roller rotatably connected inside the housing, a support plate fixedly connected to the outside of the housing, a motor fixedly connected to the top of the support plate, a bracket fixedly connected to the bottom of the support plate, the end of the bracket away from the support plate fixedly connected to the outside of the housing, the output end of the motor fixedly connected to the outside of the drive roller, a groove formed on the outside of the drive roller, and a wire outlet formed on the outside of the housing.

[0005] As a further description of the above technical solution: The inner walls of both the left and right sides of the outer casing are provided with sliding grooves, and the inner walls of the sliding grooves are provided with locking grooves. A second rotating shaft is slidably connected inside the sliding grooves. A coil is rotatably connected to the outside of the second rotating shaft. A first abutment is slidably connected inside the second rotating shaft. A first spring is fixedly connected to one side of the first abutment. A locking tongue is fixedly connected to the other side of the first abutment. A circular shell is fixedly connected to the outside of the outer casing. A second abutment is slidably connected inside the circular shell. A pressure rod is fixedly connected inside the second abutment. A second spring is sleeved on the outside of the pressure rod. A pressure plate is fixedly connected to the end of the pressure rod away from the second spring.

[0006] As a further description of the above technical solution: The pressure roller engages with the groove, and the long shaft is slidably connected to the inner wall of the arc-shaped guide groove.

[0007] As a further description of the above technical solution: The counterweight abuts against the outer wall of the outer shell.

[0008] As a further description of the above technical solution: The spring is fixedly connected to the inside of the rotating shaft at one end away from the abutment plate, and the abutment plate abuts against the inner wall of the rotating shaft.

[0009] As a further description of the above technical solution: One end of the second spring is fixedly connected to the inner wall of the circular shell, and the other end of the second spring is fixedly connected to the outside of the second abutment.

[0010] As a further description of the above technical solution: The second abutment plate abuts against the inner wall of the circular shell.

[0011] As a further description of the above technical solution: The latch is slidably connected inside the lock groove, the pressure rod is slidably connected inside the lock groove, and the pressure rod abuts against the outside of the latch.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the device can adaptively adjust the clamping force on wires of different sizes without manual adjustment. With the help of related structures, the cooperation between the pressure roller and the drive roller can be automatically adjusted according to the thickness of the wire, which effectively avoids damage to the wire caused by improper manual adjustment. At the same time, it can always maintain a stable clamping and conveying effect, reduce the time consumption in the adjustment process, and help improve the overall work efficiency.

[0013] 2. In this utility model, the unlocking, replacement and fixing of the roll can be completed by simple pressing and sliding actions, without complicated disassembly steps, which greatly reduces the difficulty of changing raw materials, saves the time required for replacement, improves replacement efficiency, and brings convenience to users' daily use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a printing material conveying device for a 3D printer according to the present invention. Figure 2 This is a schematic diagram of the counterweight block of a printing material conveying device for a 3D printer according to the present invention. Figure 3 This is a schematic diagram of the pressure roller of a printing material conveying device for a 3D printer according to the present invention. Figure 4 This is a schematic diagram of the chute structure of a printing material conveying device for a 3D printer according to the present invention; Figure 5 This is a schematic diagram of the roll of printing material for a 3D printer according to the present invention. Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0015] Legend: 1. Outer shell; 2. Arc-shaped guide groove; 3. Drive wheel; 4. Support plate; 5. Motor; 6. Bracket; 7. Shaft 1; 8. Linkage rod; 9. Long shaft; 10. Pressure roller; 11. Pressure plate; 12. Groove; 13. Counterweight; 14. Cable outlet; 15. Shaft 2; 16. Winding ring; 17. Slide groove; 18. Locking groove; 19. Abutment 1; 20. Spring 1; 21. Locking tongue; 22. Round shell; 23. Abutment 2; 24. Pressure rod; 25. Spring 2. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figures 1-4This utility model provides an embodiment of a 3D printer's printing material delivery device, including a housing 1. The housing 1 serves as the basic frame of the entire device, providing installation and protection space for various components. Arc-shaped guide grooves 2 are provided on both sides of the housing 1, providing specific trajectories for the sliding of subsequent related components, ensuring that their movement direction meets design requirements. A rotating shaft 7 is fixedly connected to each housing 1, providing a fulcrum for the installation of a linkage rod 8. The rotating shafts 7 on both sides of the housing 1 are symmetrically distributed to ensure the balance of the linkage structure. A linkage rod 8 is rotatably connected to the external shaft 7. The linkage rod 8 can rotate flexibly around the shaft 7 to realize the linkage action of the two end components. A counterweight 13 is fixedly connected to one end of the linkage rod 8. The counterweight 13 applies a pulling force to the linkage rod 8 through its own weight, which helps to maintain the stable posture of the linkage rod 8. A long shaft 9 is fixedly connected to the other end of the linkage rod 8. The long shaft 9 transmits the movement of the linkage rod 8 to the pressure roller 10 and provides an installation position for the pressure roller 10. The pressure roller 10 is rotatably connected to the external shaft 9. The pressure roller 10 can rotate freely around the long shaft 9, which facilitates the interaction with the active shaft. The rotating wheel 3 works together to transport materials; the active rotating wheel 3 is rotatably connected inside the outer shell 1, and the active rotating wheel 3 is the power actuator for material transport, driving the material to move through rotation; the support plate 4 is fixedly connected to the outside of the outer shell 1, and the support plate 4 provides an installation surface for the motor 5 and the bracket 6, so that the relevant components form a stable installation structure; the motor 5 is fixedly connected to the top of the support plate 4, and the motor 5 provides the power source for the rotation of the active rotating wheel 3; the bracket 6 is fixedly connected to the bottom of the support plate 4, and the end of the bracket 6 away from the support plate 4 is fixedly connected to the outside of the outer shell 1, and the bracket 6 provides auxiliary support for the support plate 4, enhancing the stability of the connection between the support plate 4 and the outer shell 1; the output end of the motor 5 is fixedly connected to the outside of the active rotating wheel 3, and the power of the motor 5 is directly transmitted to the active rotating wheel 3 through the output end, driving it to rotate synchronously; the active rotating wheel 3 has a groove 12 on its outside, the shape of which is adapted to the shape of the printing material, used to accommodate and limit the printing material, preventing it from shifting during transport; the outer shell 1 has an outlet 14 on its outside, which provides an output channel for the transported printing material, guiding the material to move towards the print head.

[0018] Reference Figures 4-6The inner walls of both sides of the outer casing 1 are provided with sliding grooves 17, which provide guide tracks for the installation and movement of the second rotating shaft 15, facilitating the adjustment of the position of the second rotating shaft 15. A locking groove 18 is provided on the inner wall of the sliding groove 17, which cooperates with the locking tongue 21 to fix the second rotating shaft 15 within the sliding groove 17. The second rotating shaft 15 is slidably connected inside the sliding groove 17, and can slide along the extension direction of the sliding groove 17, facilitating the adjustment of the position of the coil 16 or its loading and unloading as needed. A winding coil 16 is externally rotatably connected to shaft 15. The winding coil 16 is used to wind and store the printing filament, and the filament is released by rotating around shaft 15. A stop plate 19 is slidably connected inside shaft 15. Stop plate 19 can slide axially inside shaft 15, transmitting the force of spring 20. Spring 20 is fixedly connected to one side of stop plate 19. Spring 20 applies a pushing force to stop plate 19 through its elastic deformation, causing stop plate 19 to drive related components. A locking tongue 21 is fixedly connected to the other side of the abutment plate 19. The locking tongue 21 extends from the pivot 15 under the push of the abutment plate 19 and engages with the lock groove 18 for fixation. A circular shell 22 is fixedly connected to the outside of the outer shell 1. The circular shell 22 provides a closed installation space for internal components such as the abutment plate 23 and the pressure rod 24. The abutment plate 23 is slidably connected inside the circular shell 22. The abutment plate 23 can slide axially inside the circular shell 22, transmitting the force of the pressure rod 24 and compressing the spring 25. The abutment plate 23 is internally fixed... A pressure rod 24 is connected, which serves as an operating component. The pressure rod 24 moves the abutment plate 23 under external force and can also directly act on the locking tongue 21. A spring 25 is sleeved on the outside of the pressure rod 24. The spring 25 compresses and deforms when the pressure rod 24 is pressed, and pushes the pressure rod 24 and the abutment plate 23 back to their original positions after the pressure is released. A pressure plate 11 is fixedly connected to the end of the pressure rod 24 away from the spring 25. The pressure plate 11 increases the force-bearing area of ​​the pressure rod 24, making it easier for the user to operate the pressure rod 24 by pressing.

[0019] Reference Figures 1-3 The pressure roller 10 engages with the groove 12, which tightly clamps the printing material in the groove 12, ensuring that the material can be stably driven when the active rotating wheel 3 rotates. The long shaft 9 is slidably connected to the inner wall of the arc-shaped guide groove 2. When the long shaft 9 slides along the arc-shaped guide groove 2, it can drive the pressure roller 10 to adjust the engagement angle with the active rotating wheel 3 to adapt to the clamping requirements under different conditions.

[0020] Reference Figures 1-3 The counterweight 13 abuts against the outer wall of the outer shell 1. By abutting against the outer shell 1, the weight of the counterweight 13 can act more stably on the linkage rod 8, avoiding unnecessary shaking of the linkage rod 8 and maintaining the pressing state of the pressure roller 10.

[0021] Reference Figures 4-6The end of spring 20 away from the abutment plate 19 is fixedly connected to the inside of the rotating shaft 15. This connection method allows the elastic force of spring 20 to act stably on the abutment plate 19, forming a continuous thrust. The abutment plate 19 abuts against the inner wall of the rotating shaft 15. The abutment state restricts the shaking of the abutment plate 19, ensures its sliding direction is accurate, and ensures the stable operation of the locking tongue 21.

[0022] Reference Figures 4-6 One end of the second spring 25 is fixedly connected to the inner wall of the round shell 22, and the other end of the second spring 25 is fixedly connected to the outside of the second abutment 23. With the fixation of both ends, the second spring 25 can stably provide the restoring force to the second abutment 23, ensuring that the pressure rod 24 can return to the initial position after operation.

[0023] Reference Figures 4-6 The second abutment plate 23 abuts against the inner wall of the round shell 22. The abutting relationship makes the sliding of the second abutment plate 23 more stable, avoids excessive movement, and ensures that the force of the pressure rod 24 can be accurately transmitted.

[0024] Reference Figures 4-6 The latch 21 is slidably connected inside the lock groove 18. This sliding engagement allows the latch 21 to smoothly engage or disengage from the lock groove 18, thereby locking and unlocking the pivot 15. The pressure rod 24 is slidably connected inside the lock groove 18 and abuts against the outside of the latch 21. When the pressure rod 24 slides inside the lock groove 18, it can push the latch 21 out of the lock groove 18 by abutting against it, thus completing the unlocking operation.

[0025] Working principle: When the coil 16 needs to be replaced, pressing the pressure plate 11 will cause the pressure rod 24 to slide along the inside of the round shell 22. At the same time, the pressure rod 24 pushes the second abutment plate 23 to compress the second spring 25, and its end abuts and pushes the locking tongue 21 out of the locking groove 18. At this time, the locking tongue 21 drives the first abutment plate 19 to compress the first spring 20. The second rotating shaft 15 can slide out along the slide groove 17 to replace the coil 16. After the replacement is completed, the second spring 25 resets and pushes the second abutment plate 23 and the pressure rod 24 back to the initial position. The first spring 20 also pushes the first abutment plate 19 and the locking tongue 21 to re-lock into the locking groove 18 to complete the fixation. The released wire enters the outer shell 1. After the counterweight 13 exerts its own weight on the linkage rod 8, the linkage rod 8 rotates around the pivot 7, causing the long shaft 9 to slide along the arc-shaped guide groove 2. This causes the pressure roller 10 outside the long shaft 9 to engage tightly with the groove 12 outside the drive wheel 3, clamping the wire in the groove 12. The position of the pressure roller 10 is adaptively adjusted according to the thickness of the wire. At this time, the motor 5 fixed on the support plate 4 starts, and its output drives the drive wheel 3 to rotate. Through the cooperation between the drive wheel 3 and the pressure roller 10, the wire moves stably and is finally delivered through the wire outlet 14 outside the outer shell 1, completing the process of conveying the printing material.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 printing material delivery device for a 3D printer comprising a housing (1), characterized in that: The outer shell (1) has arc-shaped guide grooves (2) on both sides. The outer shell (1) is fixedly connected to a rotating shaft (7). The rotating shaft (7) is rotatably connected to a linkage rod (8). One end of the linkage rod (8) is fixedly connected to a counterweight (13). The other end of the linkage rod (8) is fixedly connected to a long shaft (9). The long shaft (9) is rotatably connected to a pressure roller (10). The inner part of the outer shell (1) is rotatably connected to a drive wheel (3). The outer shell (1) is fixedly connected to a support plate (4). The top of the support plate (4) is fixedly connected to a motor (5). The bottom of the support plate (4) is fixedly connected to a bracket (6). The end of the bracket (6) away from the support plate (4) is fixedly connected to the outside of the outer shell (1). The output end of the motor (5) is fixedly connected to the outside of the drive wheel (3). The drive wheel (3) has a groove (12) on its outside. The outer shell (1) has a cable outlet (14) on its outside.

2. The printing material delivery apparatus of a 3D printer according to claim 1, wherein: The inner walls of the outer shell (1) are provided with sliding grooves (17) on both the left and right sides. The inner walls of the sliding grooves (17) are provided with locking grooves (18). The sliding grooves (17) are slidably connected to the second rotating shaft (15). The rotating shafts (15) are rotatably connected to the outside of the second rotating shafts (15). The rotating shafts (15) are slidably connected to the first abutment (19). The first abutment (19) is fixedly connected to one side of the first abutment (19) and the other side of the first abutment (19) is fixedly connected to the locking tongue (21). The outer shell (1) is fixedly connected to the outside of the outer shell (1). The round shell (22) is slidably connected to the inside of the round shell (22). The second abutment (23) is slidably connected to the inside of the second abutment (23). The pressure rod (24) is fixedly connected to the inside of the second abutment (23). The pressure rod (24) is sleeved with the second spring (25). The end of the pressure rod (24) away from the second spring (25) is fixedly connected to the pressure plate (11).

3. The printing material conveying device of a 3D printer according to claim 1, wherein: The pressure roller (10) engages with the groove (12), and the long shaft (9) is slidably connected to the inner wall of the arc-shaped guide groove (2).

4. The printing material conveying device of a 3D printer according to claim 1, wherein: The counterweight (13) abuts against the outer wall of the outer shell (1).

5. The printing material delivery apparatus of a 3D printer according to claim 2, wherein: The spring one (20) is fixedly connected to the interior of the rotating shaft two (15) at the end away from the abutment one (19), and the abutment one (19) abuts against the inner wall of the rotating shaft two (15).

6. The printing material delivery apparatus of a 3D printer according to claim 2, wherein: One end of the second spring (25) is fixedly connected to the inner wall of the round shell (22), and the other end of the second spring (25) is fixedly connected to the outside of the second abutment (23).

7. The printing material delivery apparatus of a 3D printer according to claim 2, wherein: The second abutment (23) abuts against the inner wall of the circular shell (22). 8.The printing material conveying device of a 3D printer according to claim 2, wherein: The latch (21) is slidably connected inside the lock groove (18), the pressure rod (24) is slidably connected inside the lock groove (18), and the pressure rod (24) abuts against the outside of the latch (21).

Images