Translation drive device for a 3D printer

Abstract

This utility model discloses a translation drive device for a 3D printer, including a base plate. A printing mechanism is mounted on the upper end of the base plate. The printing mechanism includes a slide rod, a top plate, a movable plate, a first rotating support arm, a second rotating support arm, a first servo motor, a second servo motor, and a print head. A slide rod is fixedly mounted on one side of the upper end of the base plate, and a top plate is fixedly mounted on the upper end of the slide rod. A movable plate is movably sleeved in the middle of the slide rod. This utility model replaces the traditional screw translation structure with a support arm rotation that drives the print head to translate. The advantage of this is that the first and second rotating support arms can be folded and rotated during transportation, eliminating the need for a large frame structure and facilitating transport and storage. Furthermore, when printing curved structures, only the first or second rotating support arm needs to be rotated by a certain angle, making the printing of curved structures more convenient and smoother.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, specifically to a translation drive device for a 3D printer. Background Technology

[0002] The translation drive mechanism of a 3D printer is the core component of three-dimensional parts. By controlling the precise movement of the print head or worktable on the X, Y, and Z axes, material is deposited layer by layer to form the shape.

[0003] In existing 3D printers, the translation drive mechanism typically uses a lead screw structure for driving. However, traditional XY translation mechanisms require long-stroke guide rails and frame support. In other words, the size of the travel guide rails and frame support needs to be designed according to the distance the device can translate. This results in a large and bulky overall device that is inconvenient to fold. Therefore, an improved translation drive mechanism for 3D printers is needed to address this issue. Summary of the Invention

[0004] The purpose of this invention is to provide a translation drive device for a 3D printer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a translation drive device for a 3D printer, comprising a base plate, an upper end of which is provided with a printing mechanism, the printing mechanism comprising a slide rod, a top plate, a movable plate, a first rotating support arm, a second rotating support arm, a first servo motor, a second servo motor, and a print head, wherein the slide rod is fixedly disposed on one side of the upper end of the base plate, the top plate is fixedly disposed on the upper end of the slide rod, the movable plate is movably sleeved in the middle of the slide rod, the first rotating support arm is movably disposed on one side of the surface of the movable plate via a rotating shaft, the second rotating support arm is movably disposed at one end of the first rotating support arm via a rotating shaft, the first servo motor is fixedly disposed on the upper surface of the movable plate, the power output shaft of the first servo motor is connected to the rotating shaft of the first rotating support arm via a coupling, the second servo motor is fixedly disposed on the top of one end of the first rotating support arm, the power output terminal of the second servo motor is connected to the rotating shaft of the second rotating support arm, and the print head is fixedly disposed at one end of the second rotating support arm.

[0006] Preferably, a screw is movably connected between the bottom plate and the top plate via a bearing, and the middle part of the movable plate is threadedly fitted onto the outer surface of the screw. The rotation of the screw can drive the movable plate to move up and down along the slide rod, thereby driving all components connected to the movable plate to move up and down.

[0007] Preferably, a third servo motor is fixedly installed at the upper end of the top plate, and the third servo motor is connected to the screw for transmission, so that the screw can be driven to rotate through the third servo motor.

[0008] Preferably, a preheating mechanism for preheating the printing filament is provided on one side of the top plate surface. The preheating mechanism includes a preheating chamber, through holes, and heating wires. The preheating chamber is fixedly installed on one side of the top plate surface, and through holes are opened on both sides of the preheating chamber surface. Heating wires are fixedly installed on the inner sidewall of the preheating chamber. Since 3D printing filaments (such as PLA and ABS) need to reach a molten state at a specific temperature to be extruded smoothly, the preheating mechanism added by this device can make the material soften uniformly, avoiding extrusion difficulties or printhead blockage due to insufficient temperature.

[0009] Preferably, a temperature control switch is provided on one side of the preheating chamber. The temperature control switch is electrically connected to the heating wire. The temperature control switch can control the heating wire to cut off the power after the heating wire has heated the interior of the preheating chamber to a predetermined temperature.

[0010] Preferably, a bracket is fixed to one side of the base plate with screws, and a printing filament storage tray is movably mounted on the upper end of the bracket via a rotating shaft. A printing table is fixed to the other side of the base plate with screws. To further facilitate the reduction of the overall size of the device, the printing table, the bracket, and the base plate can also be disassembled.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. During transportation, the first rotating support arm and the second rotating support arm can be rotated and folded, eliminating the need for a large frame and facilitating transportation and storage. Furthermore, when printing arc-shaped structures, this device only requires rotating either the first or second rotating support arm at a certain angle, making the printing of arc-shaped structures more convenient and smoother.

[0012] 2. This utility model is equipped with a preheating mechanism. Since 3D printing filaments (such as PLA and ABS) need to reach a molten state at a specific temperature to be extruded smoothly, the preheating mechanism added to this device can make the material soften evenly, avoiding extrusion difficulties or print head blockage due to insufficient temperature, thereby further improving the printing effect of this device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a translation drive device for a 3D printer according to the present invention. Figure 2 This is a side view of a translation drive device for a 3D printer according to the present invention; Figure 3 This is a top view of a translation drive device for a 3D printer according to the present invention. Figure 4 This is an overall structural view of the preheating mechanism in the translation drive device of a 3D printer according to the present invention.

[0014] In the diagram: 1. Base plate; 2. Slide rod; 3. Top plate; 4. Movable plate; 5. First rotating support arm; 6. Second rotating support arm; 7. First servo motor; 8. Second servo motor; 9. Print head; 10. Screw; 11. Third servo motor; 12. Preheating chamber; 13. Through hole; 14. Heating wire; 15. Temperature control switch; 16. Support; 17. Printing filament storage tray; 18. Printing table. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a translational drive device for a 3D printer, including a base plate 1. A printing mechanism is provided on the upper end of the base plate 1. The printing mechanism includes a slide rod 2, a top plate 3, a movable plate 4, a first rotating support arm 5, a second rotating support arm 6, a first servo motor 7, a second servo motor 8, and a print head 9. The slide rod 2 is fixedly mounted on one side of the upper end of the base plate 1, and the top plate 3 is fixedly mounted on the upper end of the slide rod 2. The movable plate 4 is movably sleeved in the middle of the slide rod 2, and a rotating shaft is movably mounted on one side of the surface of the movable plate 4. A first rotating support arm 5, with a second rotating support arm 6 movably mounted at one end of the first rotating support arm 5 via a rotating shaft, a first servo motor 7 fixedly mounted on the upper surface of the movable plate 4, the power output shaft of the first servo motor 7 being connected to the rotating shaft of the first rotating support arm 5 via a coupling, a second servo motor 8 fixedly mounted on the top of one end of the first rotating support arm 5, the power output terminal of the second servo motor 8 being connected to the rotating shaft of the second rotating support arm 6, and a print head 9 fixedly mounted at one end of the second rotating support arm 6.

[0017] A screw 10 is movably connected between the bottom plate 1 and the top plate 3 via a bearing. The middle part of the movable plate 4 is movably sleeved on the outer surface of the screw 10 via a thread. The rotation of the screw 10 can drive the movable plate 4 to move up and down along the slide bar 2, thereby driving all components connected to the movable plate 4 to move up and down. A third servo motor 11 is fixedly installed on the upper end of the top plate 3. The third servo motor 11 is connected to the screw 10 through transmission. The screw 10 can be driven to rotate by the third servo motor 11. A preheating mechanism for preheating the printing filament is provided on one side of the surface of the top plate 3. The preheating mechanism includes a preheating chamber 12, through holes 13, and heating wires 14. The preheating chamber 12 is fixedly installed on one side of the surface of the top plate 3. Through holes 13 are opened on both sides of the surface of the preheating chamber 12. Heating wires 14 are fixedly installed on the inner sidewall of the preheating chamber 12. Since 3D printing filaments (such as PLA and ABS) need to reach a molten state at a specific temperature to be extruded smoothly, the preheating mechanism added by this device can make the material soften uniformly, avoiding extrusion difficulties or blockage of the print head 9 due to insufficient temperature. A temperature control switch 15 is provided on one side inside the preheating chamber 12. The temperature control switch 15 is electrically connected to the heating wire 14. The temperature control switch 15 can control the heating wire 14 to turn off the power after the heating wire 14 heats the inside of the preheating chamber 12 to a predetermined temperature. A bracket 16 is fixedly mounted on one side of the base plate 1 by screws. A printing filament storage tray 17 is movably mounted on the upper end of the bracket 16 via a rotating shaft. A printing table 18 is fixedly mounted on the other side of the base plate 1 by screws. To further reduce the overall size of the device, the printing table 18, the bracket 16 and the base plate 1 can also be disassembled. Working principle: When using this device, the X and Y movement of the print head 9 can be adjusted by the first and second servo motors driving the first rotating support arm 5 and the second support arm. Thus, compared to the traditional X and Y axis guide rail and frame structure, this device allows the first rotating support arm 5 and the second rotating support arm 6 to be folded up during transportation. Specifically, as shown... Figure 3 As shown, after removing the printing table 18, the overall volume of the device is significantly reduced, and it can be easily transported and stored without the need for a large frame. At the same time, when the device needs to print arc-shaped structures, it only needs to rotate the first rotating arm 5 or the second rotating arm 6 by a certain angle, which makes the printing of arc-shaped structures more convenient and smooth. This device is also equipped with a preheating mechanism. Since 3D printing filaments (such as PLA and ABS) need to reach a molten state at a specific temperature to be extruded smoothly, the added preheating mechanism in this device can soften the material evenly, avoiding extrusion difficulties or clogging of the print head 9 due to insufficient temperature, thereby further improving the printing effect of this device.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A translation drive device for a 3D printer, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is provided with a printing mechanism, which includes a slide rod (2), a top plate (3), a movable plate (4), a first rotating support arm (5), a second rotating support arm (6), a first servo motor (7), a second servo motor (8), and a print head (9). A slide rod (2) is fixedly provided on one side of the upper end of the base plate (1), and a top plate (3) is fixedly provided on the upper end of the slide rod (2). A movable plate (4) is movably sleeved in the middle of the slide rod (2). A first rotating support arm (5) is movably provided on one side of the surface of the movable plate (4) through a rotating shaft. A second rotating arm (6) is movably mounted on one end of the movable arm (5) via a rotating shaft. A first servo motor (7) is fixedly mounted on the upper surface of the movable plate (4). The power output shaft of the first servo motor (7) is connected to the rotating shaft of the first rotating arm (5) via a coupling. A second servo motor (8) is fixedly mounted on the top of one end of the first rotating arm (5). The power output terminal of the second servo motor (8) is connected to the rotating shaft of the second rotating arm (6). A print head (9) is fixedly mounted on one end of the second rotating arm (6).

2. The translation drive device for a 3D printer according to claim 1, characterized in that: A screw (10) is movably mounted between the bottom plate (1) and the top plate (3) via a bearing, and the middle part of the movable plate (4) is movably mounted on the outer surface of the screw (10) via a thread.

3. The translation drive device for a 3D printer according to claim 2, characterized in that: A third servo motor (11) is fixedly installed on the upper end of the top plate (3), and the third servo motor (11) is connected to the screw (10) for transmission.

4. The translation drive device for a 3D printer according to claim 1, characterized in that: A preheating mechanism for preheating printing filament is provided on one side of the surface of the top plate (3). The preheating mechanism includes a preheating chamber (12), a through hole (13), and a heating wire (14). A preheating chamber (12) is fixedly provided on one side of the surface of the top plate (3). Through holes (13) are provided on both sides of the surface of the preheating chamber (12). A heating wire (14) is fixedly provided on the inner side wall of the preheating chamber (12).

5. The translation drive device for a 3D printer according to claim 4, characterized in that: A temperature control switch (15) is provided on one side inside the preheating chamber (12), and the temperature control switch (15) is electrically connected to the heating wire (14).

6. The translation drive device for a 3D printer according to claim 1, characterized in that: A bracket (16) is fixedly mounted on one side of the base plate (1) by screws. A printing filament storage tray (17) is movably mounted on the upper end of the bracket (16) via a rotating shaft. A printing table (18) is fixedly mounted on the other side of the base plate (1) by screws.

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