Rotary driving printing arm of extrusion type 3D printer

Abstract

The utility model discloses an extrusion type 3D printer rotation driving printing arm, and particularly relates to the technical field of printers, the extrusion type 3D printer rotation driving printing arm comprises a connecting plate and a spray head, the spray head is located on the front side of the connecting plate, a U-shaped plate is arranged on the rear side of the connecting plate, and a rotating assembly is arranged between the U-shaped plate and the connecting plate; the rotating assembly comprises a side plate, two first rotating shafts, a second rotating shaft, an indicating plate, a gear ring, a gear rod and a self-locking motor, the front side of the side plate is fixedly connected with the connecting plate, and the opposite ends of the two first rotating shafts are fixedly connected with the side plate. The self-locking motor works to drive the gear rod to rotate, so that the side plate and the connecting plate are driven to rotate, the nozzle is further driven to rotate, meanwhile, the other first rotating shaft drives the second rotating shaft and the indicating plate to rotate, the rotating angle of the connecting plate is observed through the indicating plate and the graduated scale, the spatial position of the nozzle can be accurately known, operation is simple, and the practicability is high. And the printing arm is conveniently driven to rotate.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and more specifically, to a rotary drive printing arm for an extrusion 3D printer. Background Technology

[0002] Extrusion 3D printers are a common type of 3D printing equipment. They heat filamentary printing materials (such as plastics, nylon, etc.) to a molten state and then use a mechanical device to extrude them from a tiny nozzle, stacking them layer by layer according to a pre-designed model path to ultimately form a three-dimensional object. Extrusion 3D printers have wide applications in many fields such as education, industrial design, medical care, and architecture. The rotary drive printing arm is a key component of an extrusion 3D printer.

[0003] A search revealed that Chinese patent CN213564412U discloses a 3D printer printing platform. This utility model uses a high-precision lead screw transmission mechanism to provide power for lifting and lowering, driving the printing arm to move back and forth in the vertical direction. During the movement, the three guide wheels form a triangular shape for positioning and guidance, ensuring that the printing platform remains parallel and horizontal throughout the entire movement, thus guaranteeing processing accuracy.

[0004] When the printer arm in the above printer is in use, the first power source drives the printing arm to move back and forth in the vertical direction along the column. However, it is inconvenient to drive the printing arm to rotate, making it difficult to accurately print complex geometric shapes such as inclined surfaces and arc structures, thus limiting the types and complexity of printable models. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rotary drive printing arm for an extrusion 3D printer, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary drive printing arm for an extrusion 3D printer, comprising a connecting plate and a nozzle, wherein the nozzle is located on the front side of the connecting plate, a U-shaped plate is provided on the rear side of the connecting plate, and a rotating assembly is provided between the U-shaped plate and the connecting plate. The rotating assembly includes a side plate, two first rotating shafts, a second rotating shaft, an indicator plate, a gear ring, a gear rod, and a self-locking motor. The front side of the side plate is fixedly connected to the connecting plate, and the opposite ends of the two first rotating shafts are fixedly connected to the side plate, and the opposite ends of the two first rotating shafts are movably connected to the U-shaped plate through bearings. The gear ring is fixedly sleeved on one of the first rotating shafts, and the gear ring meshes with the gear rod. The top end of the gear rod is fixedly connected to the self-locking motor, and the self-locking motor is fixedly installed inside the top end of the U-shaped plate.

[0007] Furthermore, the top and bottom ends of the second rotating shaft are fixedly connected to another first rotating shaft and an indicator plate, respectively. A scale is movably provided at the bottom of the indicator plate, and the bottom end of the scale is fixedly connected to a U-shaped plate.

[0008] As can be seen, the above technical solution makes it easy to observe the rotation angle of the connecting plate.

[0009] Furthermore, the nozzle is provided with a moving component, which includes a stepper motor, a lead screw, a slide bar, two sliders, and two fixed plates.

[0010] Furthermore, the stepper motor is fixedly installed on the rear side of the connecting plate, and the output shaft end of the stepper motor is fixedly connected to the lead screw. The rear end of the slide rod is fixedly connected to the connecting plate, and the two sliders are respectively movably sleeved on the lead screw and the slide rod.

[0011] Furthermore, the two fixing plates are fixedly connected to the nozzle on opposite sides, and the two fixing plates are fixed to the two sliders by bolts on opposite sides.

[0012] As can be seen, in the above technical solution, the nozzle is disassembled and replaced by loosening the fixing between the fixing plate and the slider by bolting.

[0013] Furthermore, booms are movably mounted on the outer sides of both the lead screw and the slide bar, and the rear sides of both booms are fixedly connected to the connecting plate.

[0014] As can be seen, in the above technical solution, the lead screw and slide bar can be protected by two booms.

[0015] Furthermore, a connecting pipe is fixedly connected to the top of the nozzle, and a flow meter is fixedly installed on the connecting pipe.

[0016] As can be seen, in the above technical solution, the extruded material enters the nozzle through the connecting pipe, and the material flow rate is detected by the flow meter.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model uses a self-locking motor to drive the gear rod to rotate, which in turn drives the side plate and connecting plate to rotate, and then drives the print head to rotate. At the same time, another first rotating shaft drives the second rotating shaft and the indicator plate to rotate. The rotation angle of the connecting plate can be observed through the indicator plate and the scale, so that the spatial position of the print head can be accurately known. The operation is simple and convenient to drive the printing arm to rotate.

[0019] 2. This utility model uses two booms to protect the lead screw and slide bar, connects the external feeding pipe to the connecting pipe, and the extruded material enters the nozzle through the connecting pipe. The stepper motor drives the lead screw to rotate, and the lead screw can drive the two slide bars and the nozzle to move horizontally. The position of the nozzle can be adjusted according to the needs. The structure is simple and easy to use. Attached Figure Description

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a bottom view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the boom and rotating component of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the nozzle and moving component of this utility model;

[0025] Figure 5 This is a cross-sectional view of the U-shaped plate and a schematic diagram of the rotating assembly structure of this utility model.

[0026] In the diagram: 1. Connecting plate; 2. Boom; 3. Nozzle; 4. Connecting pipe; 5. Flow meter; 6. U-shaped plate; 7. Scale; 8. Moving component; 9. Rotating component; 801. Stepper motor; 802. Lead screw; 803. Slide bar; 804. Slider; 805. Fixing plate; 901. Side plate; 902. First rotating shaft; 903. Second rotating shaft; 904. Indicator plate; 905. Gear ring; 906. Gear rod; 907. Self-locking motor. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. 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.

[0028] Refer to the instruction manual appendix Figure 1-5 This embodiment of an extrusion 3D printer rotary drive printing arm includes a connecting plate 1 and a nozzle 3, with the nozzle 3 located on the front side of the connecting plate 1. A U-shaped plate 6 is provided on the rear side of the connecting plate 1, and a rotating assembly 9 is provided between the U-shaped plate 6 and the connecting plate 1. The rotating assembly 9 includes a side plate 901, two first rotating shafts 902, a second rotating shaft 903, an indicator plate 904, a gear ring 905, a gear rod 906, and a self-locking motor 907. The front side of the side plate 901 is fixedly connected to the connecting plate 1. The opposite ends of the two first rotating shafts 902 are fixedly connected to the side plate 901, and the opposite ends of the two first rotating shafts 902 are movably connected to the U-shaped plate 6 through bearings. The gear ring 905 is fixedly sleeved on one of the first rotating shafts 902, and the gear ring 905 meshes with the gear rod 906. The top end of the gear rod 906 is fixedly connected to the self-locking motor 907, which is fixedly installed inside the top end of the U-shaped plate 6.

[0029] Furthermore, the top and bottom ends of the second rotating shaft 903 are fixedly connected to another first rotating shaft 902 and an indicator plate 904, respectively. A scale 7 is movably provided at the bottom of the indicator plate 904, and the bottom end of the scale 7 is fixedly connected to the U-shaped plate 6.

[0030] Furthermore, the nozzle 3 is provided with a moving component 8, which includes a stepper motor 801, a lead screw 802, a slide bar 803, two sliders 804, and two fixed plates 805. The stepper motor 801 is fixedly installed on the rear side of the connecting plate 1, and the output shaft end of the stepper motor 801 is fixedly connected to the lead screw 802. The rear end of the slide bar 803 is fixedly connected to the connecting plate 1. The two sliders 804 are respectively movably sleeved on the lead screw 802 and the slide bar 803. The opposite sides of the two fixed plates 805 are fixedly connected to the nozzle 3, and the opposite sides of the two fixed plates 805 are fixed to the two sliders 804 by bolts. The outer sides of the lead screw 802 and the slide bar 803 are movably provided with arms 2, and the rear sides of the two arms 2 are fixedly connected to the connecting plate 1. The top end of the nozzle 3 is fixedly connected to a connecting pipe 4, and a flow meter 5 is fixedly installed on the connecting pipe 4.

[0031] The two booms 2 protect the lead screw 802 and slide bar 803, and connect the external feed pipe to the connecting pipe 4. The extruded material enters the nozzle 3 through the connecting pipe 4. The flow rate of the material is detected by the flow meter 5, and the stepper motor 801 is started. The stepper motor 801 drives the lead screw 802 to rotate. Since one slider 804 is threadedly connected to the lead screw 802, and the other slider 804 and slide bar 803 restrict the rotation of the nozzle 3, the lead screw 802 can drive the two sliders 804 and the nozzle 3 to move horizontally. The position of the nozzle 3 can be adjusted as needed. The structure is simple and easy to use. The nozzle 3 can be disassembled and replaced by unscrewing the fixing plate 805 and the slider 804 with bolts.

[0032] The usage method of this embodiment is as follows:

[0033] In use, the connecting plate 1 and the two arms 2 form the printing arm. The U-shaped plate 6 is installed and fixed by bolts. The self-locking motor 907 is started, and the self-locking motor 907 drives the gear rod 906 to rotate. Since the gear rod 906 meshes with the gear ring 905, and the gear ring 905 is fixedly sleeved on one of the first rotating shafts 902, the gear rod 906 can drive the gear ring 905 and the two first rotating shafts 902 to rotate, thereby driving the side plate 901 and the connecting plate 1 to rotate, and then driving the printhead 3 to rotate. At the same time, the other first rotating shaft 902 drives the second rotating shaft 903 and the indicator plate 904 to rotate. The rotation angle of the connecting plate 1 can be observed through the indicator plate 904 and the scale 7, so that the spatial position of the printhead 3 can be accurately known. The operation is simple and convenient to drive the printing arm to rotate.

[0034] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 rotary drive printing arm for an extrusion 3D printer, comprising a connecting plate (1) and a nozzle (3), wherein the nozzle (3) is located on the front side of the connecting plate (1), characterized in that: A U-shaped plate (6) is provided on the rear side of the connecting plate (1), and a rotating assembly (9) is provided between the U-shaped plate (6) and the connecting plate (1). The rotating assembly (9) includes a side plate (901), two first rotating shafts (902), a second rotating shaft (903), an indicator plate (904), a gear ring (905), a gear rod (906), and a self-locking motor (907). The front side of the side plate (901) is fixedly connected to the connecting plate (1), and the two first rotating shafts (902) are... The two first rotating shafts (902) are fixedly connected to the side plate (901) at opposite ends, and the two first rotating shafts (902) are movably connected to the U-shaped plate (6) through bearings. The gear ring (905) is fixedly sleeved on one of the first rotating shafts (902), and the gear ring (905) meshes with the gear rod (906). The top end of the gear rod (906) is fixedly connected to the self-locking motor (907), and the self-locking motor (907) is fixedly installed inside the top end of the U-shaped plate (6).

2. The rotary drive printing arm of the extrusion 3D printer according to claim 1, characterized in that: The top and bottom ends of the second rotating shaft (903) are fixedly connected to another first rotating shaft (902) and an indicator plate (904), respectively. A scale (7) is movably provided at the bottom of the indicator plate (904), and the bottom end of the scale (7) is fixedly connected to a U-shaped plate (6).

3. The rotary drive printing arm of the extrusion 3D printer according to claim 1, characterized in that: The nozzle (3) is provided with a moving component (8), which includes a stepper motor (801), a lead screw (802), a slide bar (803), two sliders (804) and two fixed plates (805).

4. The rotary drive printing arm of the extrusion 3D printer according to claim 3, characterized in that: The stepper motor (801) is fixedly installed on the rear side of the connecting plate (1), and the output shaft end of the stepper motor (801) is fixedly connected to the lead screw (802). The rear end of the slide bar (803) is fixedly connected to the connecting plate (1), and the two sliders (804) are respectively movably sleeved on the lead screw (802) and the slide bar (803).

5. The rotary drive printing arm of the extrusion 3D printer according to claim 3, characterized in that: The two fixing plates (805) are fixedly connected to the nozzle (3) on opposite sides, and the two fixing plates (805) are fixed to the two sliders (804) by bolts on opposite sides.

6. The rotary drive printing arm of the extrusion 3D printer according to claim 3, characterized in that: Both the lead screw (802) and the slide bar (803) are movably equipped with booms (2), and the rear sides of both booms (2) are fixedly connected to the connecting plate (1).

7. The rotary drive printing arm of the extrusion 3D printer according to claim 1, characterized in that: The nozzle (3) is fixedly connected to a connecting pipe (4), and a flow meter (5) is fixedly installed on the connecting pipe (4).

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