3D printing device with printing head convenient to maintain

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a 3D printing device with a printing head convenient to maintain, the 3D printing device comprises a fixed base, a feeding groove is formed in the fixed base, a sliding plate is slidably connected in the feeding groove, and a clamping plate is slidably arranged in the sliding plate; the mounting mechanism comprises a mounting plate, the mounting plate is slidably connected with the fixing base, a fixing groove is formed in the mounting plate, an extruder is slidably connected into the fixing groove, the output end of the extruder is slidably connected with the top of a printing nozzle, and the printing nozzle is fixed to the bottom of the mounting plate; wherein the interiors of the two sides of the fixed base are rotationally connected with fixed rings correspondingly, the interiors of the fixed rings are in threaded connection with threaded rods, and the tops of the threaded rods are fixedly connected with the bottom of the mounting plate; according to the utility model, the extruder and the printing nozzle can be quickly disassembled and assembled, so that internal structural parts can be conveniently detected and maintained; and meanwhile, the extruder can be replaced, so that the printing spray head can be suitable for printing wires with different wire diameters.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, specifically relating to a 3D printing device with an easily maintainable printhead. Background Technology

[0002] 3D printing, as a rapid prototyping technology, has been widely used in industrial design, architecture, automotive, aerospace, and medical fields in recent years. This technology uses digital model files as a basis and constructs objects using powdered metals or plastics and other bondable materials through a layer-by-layer printing process. In the 3D printing process, the print head, as the core component, undertakes the key tasks of material extrusion and shaping.

[0003] One common issue with 3D printing devices is that the print head is prone to material breakage and blockage after printing. Since blockages are often difficult to clear, the print head needs to be disassembled for cleaning. Ordinary print head components are usually fixed to the printer's transmission mechanism via threads, which makes frequent disassembly and reassembly of the print head prone to thread stripping. The disassembly process is also quite troublesome, time-consuming, and labor-intensive, causing great inconvenience to the staff when installing the print head and affecting work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a 3D printing device with an easily maintainable printhead, which allows for quick disassembly and assembly of the extruder and printhead, facilitating the inspection and maintenance of internal structural components; at the same time, it also allows for the replacement of the extruder, enabling the printhead to be used with printing filaments of different diameters.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A 3D printing device with an easy-to-maintain printhead includes a fixed base, a feed groove on the top of the fixed base, a sliding plate slidably connected inside the feed groove, and a clamping plate slidably connected inside the sliding plate.

[0007] The mounting mechanism includes a mounting plate that is slidably connected to the fixed base. A fixing groove is provided on the upper part of the mounting plate, and an extruder is slidably connected inside the fixing groove. The output end of the extruder is slidably connected to the top of the print head, and the print head is fixed to the bottom of the mounting plate.

[0008] The fixed base has a fixed ring rotatably connected to the inside of each side, and a threaded rod is threadedly connected to the inside of each fixed ring. The top of the threaded rod is fixedly connected to the bottom of the mounting plate.

[0009] Furthermore, the top of the mounting plate is provided with a sliding groove, which is located on both sides of the fixed groove, and the interior of the sliding groove is slidably connected to the limiting plate. Multiple limiting springs are assembled between the limiting plate and the sliding groove, and the multiple limiting springs are all located on the side of the limiting plate closer to the fixed groove.

[0010] Furthermore, an extrusion tube is fixed inside the extruder, and the output end of the extrusion tube is slidably connected to the top of the print head.

[0011] Furthermore, the sliding plate has an adjustment groove inside, the clamping plate is slidably connected inside the adjustment groove, and an adjustment spring is installed between the clamping plate and the adjustment groove. The clamping plate has an inclined surface on the side away from the adjustment spring.

[0012] Furthermore, a threaded hole is provided on the side of the sliding plate away from the mounting plate, and an adjusting screw is threaded into the threaded hole. The output end of the adjusting screw is slidably connected to the inclined surface provided on the clamping plate.

[0013] Furthermore, a support plate is slidably connected to the bottom of the fixing groove, a support spring is fitted between the top of the support plate and the bottom of the fixing groove, and the top of the support plate is in contact with the bottom of the extruder.

[0014] Furthermore, the mounting mechanism also includes a cooling plate, one side of which is fixedly connected to the mounting plate, and a cooler is fixed to the other side of the cooling plate.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This utility model discloses a 3D printing device with an easy-to-maintain printhead. By setting a sliding plate and a clamping plate on the fixed base, it can effectively clamp and fix the printing filament, ensuring that the printing filament can quickly contact the extruder and that the extruder can effectively complete the material delivery work to the printhead.

[0017] This utility model discloses a 3D printing device with an easily maintainable printhead. By configuring the printhead into multiple modules, it enables rapid disassembly and assembly of the printhead, greatly improving the maintenance efficiency and applicability of the device. Simultaneously, the extruder can be replaced to ensure it can adapt to printing filaments of different diameters, further enhancing the device's flexibility and versatility. By configuring the internal structural components as detachable modules, inspection and maintenance become more convenient, reducing downtime and improving equipment maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this practical application;

[0019] Figure 2 This is an exploded view of the overall structure of this practical application;

[0020] Figure 3 This is a partial sectional view of the overall structure of this utility model;

[0021] Figure 4 This is a practical book Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a partial structural sectional view of this utility model;

[0023] Figure 6 This is a schematic diagram of the exploded partial structure of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. Fixed base; 11. Feed chute; 12. Sliding plate; 121. Adjusting groove; 122. Adjusting screw; 13. Clamping plate; 14. Fixing ring; 15. Threaded rod; 20. Mounting mechanism; 21. Mounting plate; 211. Sliding groove; 212. Limiting plate; 22. Fixing groove; 221. Support plate; 23. Extruder; 231. Extrusion tube; 24. Printing nozzle; 25. Cooling plate. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] like Figures 1 to 6 As shown, a 3D printing device with an easy-to-maintain printhead includes a fixed base 10, a feed groove 11 is provided on the top of the fixed base 10, a sliding plate 12 is slidably connected inside the feed groove 11, and the top of the sliding plate 12 is slidably connected to a clamping plate 13.

[0028] Mounting mechanism 20 includes mounting plate 21, which is slidably connected to fixed base 10. A fixing groove 22 is provided on the upper part of mounting plate 21. An extruder 23 is slidably connected inside the fixing groove 22. The output end of the extruder 23 is slidably connected to the top of the print head 24. The print head 24 is fixed to the bottom of mounting plate 21.

[0029] The fixed base 10 has a fixed ring 14 rotatably connected to the inside of each side, and a threaded rod 15 is threadedly connected to the inside of the fixed ring 14. The top of the threaded rod 15 is fixedly connected to the bottom of the mounting plate 21.

[0030] In this embodiment, it should be noted that the extruder 23 is a hot melt (FDM) extruder with a heating function, which can effectively transport the printing filament and melt and extrude it. This is a conventional technology and will not be elaborated on here. By fixing the fixed base 10 to the axial driver on the printing device, it is ensured that the fixed base 10 and the print head can be effectively adjusted in all directions by axial drive. By rotating the fixed ring 14, it engages with the threaded rod 15 fixed at the bottom of the mounting base, driving the mounting base and the print head 24 to connect with the fixed base 10, ensuring the stability of the printing operation. Subsequently, by placing the extruder 23 in the fixed groove 22 and using the clamping plate 13 and the sliding plate 12, the printing filament is connected to the input end of the extruder 23, ensuring that the extruder 23 can stably supply raw materials to the print head 24, and ensuring that the print head 24 performs printing under the drive of the axial driver.

[0031] like Figure 2 , Figure 5 As shown, the top of the mounting plate 21 is also provided with a sliding groove 211. The sliding groove 211 is located on both sides of the fixed groove 22, and the interior of the sliding groove 211 is slidably connected to the limiting plate 212. Multiple limiting springs are assembled between the limiting plate 212 and the sliding groove 211. The multiple limiting springs are all located on the side of the limiting plate 212 close to the fixed groove 22.

[0032] In a preferred embodiment, it should be noted that the top of the limiting plate 212, away from the sliding groove 211, is provided with anti-slip texture, which can increase the friction between the operator and the limiting plate 212, ensuring that the limiting plate 212 can be moved stably. When force is applied to one side of the limiting plate 212, it moves within the sliding groove 211. Simultaneously, the limiting plate 212 causes the limiting spring to deform, sliding the limiting plate 212 above the fixing groove 22 and moving it to both sides of the fixing groove 22, ensuring that the extruder 23 is placed into the fixing groove 22. When the extruder 23 is in the fixing groove 22, the limiting plate 212 is released. At this time, the limiting spring rebounds without external force, causing the limiting plate 212 to slide within the fixing groove 22, so that the limiting plates 212 on both sides simultaneously slide to the top of the extruder 23, limiting the extruder 23 and ensuring that the extruder 23 remains stable when used within the fixing groove 22.

[0033] like Figure 2 , Figure 3 As shown, an extrusion tube 231 is fixed inside the extruder 23, and the output end of the extrusion tube 231 is slidably connected to the top of the print head 24. Through the setting of the extrusion tube 231, the printing material after being heated by the extruder 23 can be effectively transferred to the print head 24.

[0034] like Figure 4 , Figure 6 As shown, the sliding plate 12 has an adjustment groove 121 inside, and a clamping plate 13 is slidably connected inside the adjustment groove 121. An adjustment spring is installed between the clamping plate 13 and the adjustment groove 121, and an inclined surface is provided on the side of the clamping plate 13 away from the adjustment spring.

[0035] It should be noted that a clamping groove is provided above the sliding plate 12, and the center of the clamping groove is on the same horizontal line as the center of the input end of the extrusion tube 231. By placing the wire into the clamping groove, the printing wire can be stably transferred to the extruder 23 by the sliding plate 12 driving the printing wire.

[0036] Preferably, a threaded hole is provided on the side of the sliding plate 12 away from the mounting plate 21, and an adjusting screw 122 is threadedly connected in the threaded hole. The output end of the adjusting screw 122 is slidably connected to the upper part of the inclined surface on the clamping plate 13.

[0037] In this embodiment, the adjusting screw 122 is rotated to engage with the sliding plate 12 via a thread, causing the output end of the adjusting screw 122 to press against the inclined surface of the clamping plate 13. This causes the clamping plate 13 to slide within the clamping groove, thus fixing the wire. Once the wire is fixed, the sliding plate 12 is pushed to bring the wire into contact with the extruder 23. It should be noted that when the clamping plate 13 slides under force, it causes the adjusting spring to deform. When the wire contacts the extruder 23, the adjusting screw 122 is rotated in the opposite direction to prevent the output end of the adjusting screw 122 from pressing against the inclined surface of the clamping plate 13. The adjusting spring, through its rebound characteristic, causes the clamping plate 13 to slide upward within the clamping groove. At this time, the clamping plate 13 and the sliding plate 12 do not fix the wire, ensuring that the extruder 23 can stably and continuously heat-melt the wire, ensuring its use by the print head 24.

[0038] like Figure 4 , Figure 5 As shown, a support plate 221 is slidably connected to the bottom of the fixed groove 22, a support spring is installed between the top of the support plate 221 and the bottom of the fixed groove 22, and the top of the support plate 221 is in contact with the bottom of the extruder 23.

[0039] It should be noted that when the support plate 221 is placed inside the sliding groove 211 and contacts the top of the support plate 221, it will apply pressure to the support spring, causing the support spring to deform. When it is necessary to remove the extruder 23, the limit plate 212 is driven to release the limit of the extruder 23. The extruder 23 does not apply external force to the support plate 221. The support spring drives the support plate 221 and the extruder 23 to rise through its rebound characteristic, so that the extruder 23 can be quickly removed from the fixed groove 22.

[0040] Preferably, the mounting mechanism 20 further includes a cooling plate 25, one side of which is fixedly connected to the mounting plate 21, and a cooler is fixed to the other side of the cooling plate 25; cooling gas is generated by the cooler and transmitted to the mounting plate 21 through the cooling plate 25, thereby reducing the instability of the mounting plate 21 and ensuring an extended service life of the printhead.

[0041] The working principle of this utility model is as follows: During use, when the printhead malfunctions and needs repair or replacement, the adjusting screw 122 inside the control sliding plate 12 is rotated, causing the clamping plate 13 to clamp and fix the wire, thereby separating the wire from the extruder 23 by driving the sliding plate 12. Subsequently, by controlling the application of power to the limiting plate 212, the limiting of the extruder 23 is released, and the rebound characteristics of the support plate 221 and the support spring cause the extruder 23 to separate from the fixing groove 22, thereby allowing the extruder 23 and the print head 24 to be inspected. If the print head 24 needs to be repaired or replaced, the threaded rod 15 is separated from the fixing ring 14 by rotating the fixing ring 14, thereby causing the mounting plate 21 and the internal print head 24 to separate from the fixing base 10, facilitating the repair or replacement of the print head 24. By adopting multi-modal assembly, the cause of the fault can be quickly identified, improving repair efficiency.

[0042] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A 3D printing device with a print head for easy maintenance, characterized by: Including fixed base (10), the top of fixed base (10) is provided with feed slot (11), the inside of feed slot (11) is slidably connected with sliding plate (12), the inside of sliding plate (12) is slidably connected with clamping plate (13); Mounting mechanism (20), the mounting mechanism (20) includes mounting plate (21), the mounting plate (21) is slidably connected with the fixed base (10), and a fixed groove (22) is formed in the upper portion of the mounting plate (21), the inside of the fixed groove (22) is slidably connected with an extruder (23), the output end of the extruder (23) is slidably connected with the top of a printing nozzle (24), and the printing nozzle (24) is fixed to the bottom of the mounting plate (21). Wherein, the inside of the fixed base (10) is rotatably connected with a fixed ring (14), the inside of the fixed ring (14) is threadedly connected with a threaded rod (15), and the top of the threaded rod (15) is fixedly connected with the bottom of the mounting plate (21).

2. The 3D printing device with a print head convenient to maintain according to claim 1, characterized in that: The top of the mounting plate (21) is also provided with a sliding groove (211), the sliding groove (211) is located on both sides of the fixed groove (22), and the inside of the sliding groove (211) is slidably connected with a limiting plate (212), a plurality of limiting springs are assembled between the limiting plate (212) and the sliding groove (211), and the plurality of limiting springs are located on the side of the limiting plate (212) close to the fixed groove (22).

3. The 3D printing device with a print head convenient to maintain according to claim 1, characterized in that: The inside of the extruder (23) is fixedly connected with an extrusion pipe (231), and the output end of the extrusion pipe (231) is slidably connected with the top of the printing nozzle (24).

4. The 3D printing device with a print head convenient to maintain according to claim 1, characterized in that: The inside of the sliding plate (12) is provided with an adjusting groove (121), the inside of the adjusting groove (121) is slidably connected with the clamping plate (13), and an adjusting spring is assembled between the clamping plate (13) and the adjusting groove (121), and the side of the clamping plate (13) away from the adjusting spring is provided with an inclined surface.

5. The 3D printing device with a print head convenient to maintain according to claim 4, characterized in that: The side of the sliding plate (12) away from the mounting plate (21) is provided with a threaded hole, and an adjusting screw rod (122) is threadedly connected in the threaded hole, and the output end of the adjusting screw rod (122) is slidably connected with the inclined surface formed on the clamping plate (13).

6. The 3D printing device with a print head convenient to maintain according to claim 1, characterized in that: The bottom of the fixed groove (22) is slidably connected with a supporting plate (221), a supporting spring is assembled between the top of the supporting plate (221) and the bottom of the fixed groove (22), and the top of the supporting plate (221) is in contact with the bottom of the extruder (23).

7. The 3D printing device with a print head convenient to maintain according to claim 1, characterized in that: The mounting mechanism (20) further includes a cooling plate (25), one side of the cooling plate (25) is fixedly connected with the mounting plate (21), and the other side of the cooling plate (25) is fixedly connected with a cooler.

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