Modular 3D printer nozzle for easy disassembly and maintenance

Abstract

The utility model relates to 3D printing equipment technical field especially relates to a modularization 3D printer nozzle convenient to disassemble and maintain, including 3D printer body, 3D printer body lower part is provided with the placement platform, 3D printer body rear side is installed with the vertical electric guide rail of symmetrical distribution, the sliding unit of vertical electric guide rail is connected with horizontal electric guide rail in common, constitutes gantry type movement system. Through setting the plug -in positioning structure cooperation elastic buckle locking mechanism between the mounting block and printer nozzle, only needs one plug -in to lock, one simple operation of lifting to loosen can complete the installation and disassembly of nozzle module, need not to lend auxiliary tools such as screwdriver, wrench, has greatly promoted the maintenance efficiency, shortened the equipment downtime.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, and in particular to a modular 3D printer nozzle that is easy to disassemble and maintain. Background Technology

[0002] 3D printing technology has been widely used in industrial manufacturing, medical and health care, education and research in recent years. Among them, fused deposition modeling (FDM) is one of the most mainstream 3D printing processes. In an FDM system, the printer nozzle module is the core execution unit that realizes material melting and precise deposition. Its function is to transport thermoplastic filament to the heating zone through the feeding mechanism, heat it to a molten state, and then extrude and deposit it layer by layer through the nozzle along a predetermined path to finally build a three-dimensional solid.

[0003] Patent CN217073372U discloses a 3D printer nozzle. This device assembles the nozzle body onto a mounting bracket, inserts the mounting bracket into a fixing plate, and then uses locking bolts to fix the connecting plate to a second limiting plate, thereby achieving detachable installation of the nozzle. This simplifies the replacement process to some extent, supports the replacement of different nozzle models, and improves operational convenience. However, there are still some shortcomings in practical applications. The device still requires auxiliary tools such as screwdrivers to tighten or loosen the locking bolts to complete the nozzle replacement, which limits the ease of operation, cannot achieve tool-free quick replacement, and requires multiple tightening actions each time, significantly increasing downtime in scenarios with frequent maintenance or material changes.

[0004] Therefore, there is an urgent need to provide a modular 3D printer nozzle that is easy to disassemble and maintain, enabling quick installation and reliable locking of the nozzle module without tools, thereby significantly improving the maintainability and flexibility of the equipment. Utility Model Content

[0005] In order to overcome the shortcomings of existing patented 3D printer nozzles which rely on tools for disassembly and assembly, making the process cumbersome and maintenance inefficient, this utility model provides a modular 3D printer nozzle that is easy to disassemble and maintain.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a modular 3D printer nozzle that is easy to disassemble and maintain, comprising a 3D printer body, a placement platform at the lower part of the 3D printer body, symmetrically distributed vertical electric guide rails mounted on the rear side of the 3D printer body, the sliding units of the vertical electric guide rails being connected to a horizontal electric guide rail to form a gantry-type motion system, mounting blocks fixedly connected to the sliding units of the horizontal electric guide rails, nozzle modules detachably mounted on the mounting blocks, a feeding seat at the top of the 3D printer body, fixing plates symmetrically fixedly connected to both sides of the mounting blocks, sliding rods slidably mounted on the fixing plates, a locking block fixedly connected to one end of the sliding rod near the nozzle module, an elastic element sleeved on the sliding rod, one end of the elastic element connected to the fixing plate, and the other end connected to the locking block, fixing blocks symmetrically arranged on both sides of the nozzle module, the fixing blocks having locking holes matching the shape of the locking blocks.

[0007] In a preferred embodiment of this utility model, the nozzle module is provided with a positioning pin structure at its bottom, and the mounting block is provided with a matching positioning hole structure at the corresponding position.

[0008] In a preferred embodiment of this utility model, the two sides of the card block are designed as inclined surfaces.

[0009] In a preferred embodiment of the present invention, the top of the 3D printer body is provided with symmetrically distributed air tanks, the feeding seat is fitted with an annular airbag, the annular airbag is connected to the air tanks on the same side through a connecting pipe, and an air pump is installed at the end of the connecting pipe near the air tanks.

[0010] In a preferred embodiment of the present invention, a first limiting plate is fixedly provided on one side of the feeding seat.

[0011] In a preferred embodiment of the present invention, a second limiting plate is threadedly provided on the other side of the feeding seat.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By setting a plug-in positioning structure between the mounting block and the printer nozzle and cooperating with an elastic buckle locking mechanism, the installation and disassembly of the nozzle module can be completed with a simple operation of plugging in and locking and lifting out, without the need for auxiliary tools such as screwdrivers and wrenches, which greatly improves maintenance efficiency and shortens equipment downtime.

[0013] 2. By inflating the annular airbag with an air pump, the annular airbag expands evenly and fits tightly against the inner wall of wire reels with different inner diameters, thus significantly improving the equipment's compatibility and applicability to various commercial wires. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the printer, placement platform, and vertical electric guide rail components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the transverse electric guide rail, slide bar, and locking block components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the gas storage tank, connecting pipe, and annular airbag components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the material feeding seat, the first limiting plate, and the second limiting plate of this utility model.

[0019] In the attached diagram, the following labels are used: 1-3D printer body, 2-placement stage, 3-vertical electric guide rail, 4-horizontal electric guide rail, 5-mounting block, 6-nozzle module, 7-feeding seat, 8-fixing plate, 9-slide bar, 10-clamping block, 11-elastic element, 12-fixing block, 13-air tank, 14-connecting pipe, 15-annular airbag, 16-air pump, 17-first limiting plate, 18-second limiting plate. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figures 1-3A modular 3D printer nozzle for easy disassembly and maintenance includes a 3D printer body 1. A platform 2 for supporting the printed object is located at the lower part of the 3D printer body 1. Vertical electric guide rails 3 are symmetrically distributed on the rear side of the 3D printer body 1. The sliding units of the two sets of vertical electric guide rails 3 are connected to a horizontal electric guide rail 4, forming a gantry-type motion system. A mounting block 5 is fixedly connected to the sliding unit of the horizontal electric guide rail 4. A nozzle module 6 is detachably mounted on the mounting block 5. The bottom of the nozzle module 6 has a positioning pin structure, and a matching positioning hole structure is opened at the corresponding position on the mounting block 5. The positioning pin and the positioning hole are inserted and engaged to achieve axial positioning and initial alignment between the nozzle module 6 and the mounting block 5, while also bearing part of the gravity load. The top of the machine body 1 is provided with a feeding seat 7 for placing wire reels. The mounting block 5 is symmetrically fixedly connected to the left and right sides with fixing plates 8. The fixing plates 8 are slidably provided with sliding rods 9. The end of the sliding rod 9 near the nozzle module 6 is fixedly connected to a locking block 10. The front and rear sides of the locking block 10 are designed with a sloping structure to achieve automatic centering and guiding insertion. An elastic element 11 is sleeved on the sliding rod 9. One end of the elastic element 11 is connected to the fixing plate 8, and the other end is connected to the locking block 10, thereby providing an inward elastic pre-tightening force for the locking block 10. The nozzle module 6 is symmetrically provided with fixing blocks 12 on the left and right sides. The fixing blocks 12 have locking holes that match the shape of the locking blocks 10. When the nozzle is installed in place, the locking blocks 10 are embedded in the locking holes under the action of the elastic element 11 to achieve lateral limiting and locking.

[0022] When using this device, first align the nozzle module 6 vertically below the mounting block 5, ensuring the positioning pin structure aligns with the positioning hole. Slowly press down on the nozzle module 6. The positioning pin first inserts into the positioning hole, achieving axial positioning and initial fixation. As pressure continues, the side wall of the fixing block 12 contacts and presses against the inclined surface of the locking block 10, forcing the slide rod 9 to slide outward, compressing the elastic element 11. This temporarily releases the locking block 10 from its locked position, making room for the nozzle module 6. When the nozzle module 6 is fully pressed down to its installation position, the locking hole and the locking block 10 are aligned. Under the restoring force of the elastic element 11, the locking block 10 automatically slides inward and engages in the locking hole, completing mechanical self-locking and achieving a secure fixation of the nozzle module 6. Installation complete. After completion, the filament is led out from the feeding seat 7 and fed into the feeding mechanism of the nozzle module 6. The 3D printer body 1 is started, driving the vertical electric guide rail 3 and the horizontal electric guide rail 4 to move together, driving the mounting block 5 and the nozzle module 6 to move precisely in the X and Z axis directions, completing the layer-by-layer fused deposition printing on the placement stage 2. When the nozzle module 6 needs to be replaced or maintained, the operator applies upward force to pull the nozzle module 6. At this time, the inner wall of the locking hole on the fixing block 12 squeezes the inclined surface of the locking block 10, forcing the locking block 10 to overcome the elastic force of the elastic element 11 and slide outward, disengaging from the locking hole and releasing the locking state. When the locking block 10 is completely disengaged, the positioning pin also disengages from the positioning hole, and the nozzle module 6 can be removed as a whole, achieving quick tool-free disassembly.

[0023] Example 2: Based on Example 1, please refer to... Figure 4 and Figure 5 The 3D printer body 1 has symmetrically distributed air tanks 13 on its top for storing compressed gas. The feeding seat 7 is fitted with an annular air bladder 15, which is connected to the air tanks 13 on the same side via a connecting pipe 14. An air pump 16 is installed at one end of the connecting pipe 14 near the air tank 13. The air pump 16 is used to deliver the compressed gas in the air tank 13 to the annular air bladder 15 to control its inflation and deflation. A first limiting plate 17 is fixedly provided on one side of the feeding seat 7, and a second limiting plate 18 is threaded on the other side of the feeding seat 7. Both the first limiting plate 17 and the second limiting plate 18 are used to limit the position of the filament in the axial direction to prevent it from shifting laterally or falling off during the rotation feeding process. The second limiting plate 18 can be screwed in or out to pick up and feed the material.

[0024] When installing wire reels of different specifications, first rotate the second limiting plate 18 counterclockwise to remove it from the unloading seat 7, releasing axial space. Then, insert the wire reel to be used axially into the unloading seat 7. Next, screw the second limiting plate 18 back into the threaded end of the unloading seat 7 to initially fix the axial position of the reel. Start the air pump 16. The air pump 16 delivers compressed gas from the air tank 13 through the connecting pipe 14 to the inside of the annular air bladder 15, causing the annular air bladder 15 to expand under pressure. Its outer diameter gradually increases and tightly fits the inner wall of the wire reel. The annular airbag 15 has good elastic deformation capability, which can adapt to the winding wire of different inner diameters, realize radial stepless adaptation and uniform force fixation. At the same time, during the wire feeding process, the friction provided by the annular airbag 15 effectively prevents the reel from slipping or jumping, ensuring smooth and continuous wire feeding. When the wire needs to be replaced, the air pump 16 is turned off and the pressure relief channel is opened. The gas in the annular airbag 15 is discharged, the airbag contracts and returns to its original shape, releasing the clamping force on the inner wall of the reel. Then, the second limit plate 18 can be unscrewed to easily remove the old reel and complete the quick replacement.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A modular 3D printer nozzle that is easy to disassemble and maintain, comprising a 3D printer body (1), a placement platform (2) provided at the lower part of the 3D printer body (1), symmetrically distributed vertical electric guide rails (3) installed on the rear side of the 3D printer body (1), the sliding units of the vertical electric guide rails (3) being connected to a horizontal electric guide rail (4) to form a gantry motion system, a mounting block (5) fixedly connected to the sliding unit of the horizontal electric guide rail (4), a nozzle module (6) being detachably mounted on the mounting block (5), and a feeding seat (7) provided at the top of the 3D printer body (1), characterized in that: The mounting block (5) is symmetrically fixedly connected to the two sides of the mounting plate (8). The mounting plate (8) is slidably provided with a slide rod (9). The slide rod (9) is fixedly connected to a locking block (10) at one end near the nozzle module (6). An elastic element (11) is sleeved on the slide rod (9). One end of the elastic element (11) is connected to the mounting plate (8), and the other end is connected to the locking block (10). The nozzle module (6) is symmetrically provided with mounting blocks (12). The mounting blocks (12) are provided with locking holes that match the shape of the locking block (10).

2. The modular 3D printer nozzle for easy disassembly and maintenance according to claim 1, characterized in that: The nozzle module (6) has a positioning pin structure at its bottom, and the mounting block (5) has a matching positioning hole structure at the corresponding position.

3. The modular 3D printer nozzle for easy disassembly and maintenance according to claim 2, characterized in that: The two sides of the card block (10) are designed as sloping structures.

4. The modular 3D printer nozzle for easy disassembly and maintenance according to claim 3, characterized in that: The 3D printer body (1) has symmetrically distributed air tanks (13) on its top. The feeding seat (7) is fitted with an annular airbag (15). The annular airbag (15) is connected to the air tank (13) on the same side through a connecting pipe (14). An air pump (16) is installed at one end of the connecting pipe (14) near the air tank (13).

5. A modular 3D printer nozzle that is easy to disassemble and maintain according to claim 4, characterized in that: A first limiting plate (17) is fixedly provided on one side of the feeding seat (7).

6. A modular 3D printer nozzle that is easy to disassemble and maintain according to claim 5, characterized in that: A second limiting plate (18) is threadedly provided on the other side of the feeding seat (7).

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