Quick head changing device for 3D printer

Abstract

The utility model relates to the technical field of 3D printing, in particular to a quick head changing device for a 3D printer, which comprises a machine body, an X-axis sliding block, an inserting part and a main body support, the X-axis sliding block is arranged on an X axis of the machine body in a sliding manner, the main body support is connected with the X-axis sliding block through the inserting part, and when the main body support is pulled up, the X-axis sliding block is inserted into the main body support. According to the quick head replacing device for the 3D printer, all parts are combined to the main body support to form a whole module, so that quick assembly and quick disassembly are achieved, it is guaranteed that a wire extruding device can be taken out quickly and directly to clean a consumable hole, and the use efficiency of the 3D printer is improved. Or the wire extruder, the first heat dissipation fan, the second heat dissipation fan and other parts can be integrally taken out of the machine body, and the throat pipe is independently disassembled and cleaned, so that the influence of narrow internal space of the machine body on disassembly and assembly of the throat pipe is eliminated, and the convenience is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, specifically, relate to a quick head changing device for 3D printer. BACKGROUND

[0002] A 3D printer is a device that can create three-dimensional objects by layering materials. It is based on digital model files and uses special materials such as plastics, powdered metals, or rubbers to print layers of material that bond together to form a three-dimensional object. Unlike traditional material-removing manufacturing techniques, 3D printing creates objects by adding material rather than removing it.

[0003] An FDM 3D printer is a type of 3D printer that uses FDM (Fused Deposition Modeling) technology. The materials used in FDM are typically thermoplastic materials such as wax, ABS (Acrylonitrile Butadiene Styrene), and nylon. These materials are supplied in filament form. Inside the print head, the material is heated and melted. The print head moves along the part's cross-sectional outline and fill path, while simultaneously extruding the molten material. The material quickly solidifies and bonds with the surrounding material.

[0004] When the printer is printing, the consumables pass through the extruder, the throat pipe, and the print nozzle in turn. The print nozzle heats the consumables to a high temperature to melt them. A cooling device is provided outside the throat pipe to continuously cool the consumables to prevent them from melting due to the high temperature generated by the print nozzle. After printing is complete, the unmelted part of the consumables needs to be pulled out. In particular, when printing in multiple colors, the consumables need to be frequently replaced. During the process of pulling out the consumables, the part melted by the nozzle can easily block the throat pipe and the consumables hole on the extruder. Therefore, it is necessary to frequently clean the throat pipe and the consumables hole. However, the existing throat pipe is surrounded by a cooling fan, a wind guide groove, a print nozzle, and a heating block. If you want to clean the throat pipe, you need to remove all the surrounding parts step by step from the outside. The throat pipe cannot be directly removed. Moreover, the internal space of the 3D printer is small, making it more difficult to disassemble and clean the consumables hole. The operation is complicated and time-consuming. SUMMARY

[0005] The utility model aims at providing a quick head changing device for 3D printer to solve the above problems.

[0006] To achieve the above purpose, the utility model embodiment provides a quick head changing device for 3D printer, which comprises a machine body, an X-axis sliding block, a plug-in part, and a main body support.

[0007] The X-axis sliding block is slidingly arranged on the X-axis of the machine body, and the main body support is connected with the X-axis sliding block through the plug-in part.

[0008] Pulling up the main support, the plug-in part can be separated from the X-axis slider;

[0009] The quick head changing device for the 3D printer further comprises an extruder, a first heat dissipation fan, a second heat dissipation fan, a wind guide groove, a throat pipe, a heating block and a circuit integrated plate which are integrally arranged on the main support.

[0010] Further, the plug-in part comprises a plurality of dovetail grooves arranged on both sides of the front end of the X-axis slider, and a plurality of dovetail blocks arranged on the main support.

[0011] The plurality of dovetail grooves and the plurality of dovetail blocks correspond to each other.

[0012] Further, continuously pushing down the main support can force the plurality of dovetail blocks to gradually insert into the plurality of dovetail grooves.

[0013] Further, two positioning circular grooves are formed on the top of the X-axis slider.

[0014] Two reinforcing columns are downwardly installed on the part protruding to the rear side of the main support,

[0015] The two positioning circular grooves and the two reinforcing columns correspond to each other.

[0016] Further, after pushing down the main support, the two reinforcing columns can gradually fit into the two positioning circular grooves as the main support moves downward.

[0017] Further, a circular recess is formed at the front center of the X-axis slider, an activity cup body is fitted and installed in the circular recess, the front side of the activity cup body is flush with the X-axis slider, a spring is installed at one end of the activity cup body, and a pressing piece is connected to the other end of the spring.

[0018] The pressing piece slightly protrudes from the X-axis slider.

[0019] Further, pushing down the main support along the plurality of dovetail grooves, the main support can gradually compress the spring after abutting against the pressing piece, so that the pressing piece is compressed into the activity cup body.

[0020] Further, a recess corresponding to the pressing piece is formed on the main support.

[0021] After the main support and the X-axis slider are fully combined, the pressing piece can rebound and be embedded in the recess on the main support.

[0022] Further, the pressing piece is a spherical body.

[0023] Compared with the prior art, the utility model embodiment has the following beneficial effects:

[0024] The quick head changing device for the 3D printer combines the filament extruder, the first heat dissipation fan, the second heat dissipation fan, the air guide groove, the throat pipe and the heating block into a whole module on the main body support, so that the main body support can be quickly and tightly assembled with the X-axis slider under the action of the dovetail groove and the reinforcing column, thereby realizing quick assembly and disassembly, ensuring that the filament extruder can be quickly and directly taken out to clean the consumable hole, or the filament extruder, the first heat dissipation fan, the second heat dissipation fan and other components can be taken out from the machine body as a whole, and the throat pipe can be separately disassembled and cleaned, thereby eliminating the influence of the small internal space of the machine body on the disassembly and assembly of the throat pipe and greatly improving the convenience; meanwhile, the movable cup body, the spring and the pressing piece can make the main body support and the X-axis slider more tightly combined, thereby ensuring the stability of the cooperation between the main body support and the X-axis slider and protecting the stable and smooth printing. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model is further described below in combination with the drawings and embodiments.

[0026] Figure 1 A perspective view of the utility model is shown;

[0027] Figure 2 A second perspective view of the utility model is shown;

[0028] Figure 3 A third perspective view of the utility model is shown;

[0029] Figure 4 A fourth perspective view of the utility model is shown;

[0030] Figure 5 A fifth perspective view of the utility model is shown;

[0031] Figure 6 A sixth perspective view of the utility model is shown;

[0032] Figure 7 A schematic view of the line integration board of the utility model in another installation state is shown;

[0033] Figure 8 A schematic view of the line integration board of the utility model in another installation state is shown;

[0034] Figure 9 A partial sectional view of the utility model is shown.

[0035] In the drawings, the same reference signs represent the same structural elements, wherein:

[0036] 1, body; 2, X-axis slider; 3, main body support; 4, wire extruder; 5, first cooling fan; 6, second cooling fan; 7, air guide groove; 8, throat pipe; 9, heating block; 10, dovetail groove; 11, positioning circular groove; 12, reinforcing column; 13, movable cup body; 14, spring; 15, pressure piece; 16, plug-in part; 17, circuit integration board. DETAILED DESCRIPTION

[0037] The utility model will be explained further in detail now in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic way, so it only shows the relevant components of the utility model.

[0038] As Figures 1-8 A quick head changing device for 3D printer, comprising: body 1, X-axis slider 2, plug-in part 16 and main body support 3;

[0039] The X-axis slider 2 is slidably arranged on the X-axis of the body 1, and the main body support 3 is connected with the X-axis slider 2 through the plug-in part 16, wherein:

[0040] Pulling up the main body support 3, the plug-in part 16 can be separated from the X-axis slider 2;

[0041] The 3D printer with the quick head changing device further comprises an extruder 4, a first heat dissipation fan 5, a second heat dissipation fan 6, a wind guide groove 7, a throat pipe 8, a heating block 9 and a circuit integrated board 17 which are integrally arranged on the main body support 3. The extruder 4 is provided with a driving motor, an extrusion gear and a wire transmission wheel inside. The consumables are arranged between the extrusion gear and the wire transmission wheel during printing. The driving motor drives the extrusion gear to rotate and the consumables are conveyed downward by friction. The 3D printer with the quick head changing device combines the extruder 4, the first heat dissipation fan 5, the second heat dissipation fan 6, the wind guide groove 7, the throat pipe 8 and the heating block 9 into a whole module on the main body support 3. The main body support 3 can be quickly and tightly assembled with the X-axis slider 2 under the action of the dovetail groove 10 and the reinforcing column 12, so as to realize quick assembly and disassembly. The extruder 4 can be quickly and directly taken out to clean the consumable hole, or the extruder 4, the first heat dissipation fan 5, the second heat dissipation fan 6 and other parts can be taken out from the machine body 1 as a whole, and the throat pipe 8 can be separately disassembled and cleaned, so as to eliminate the influence of the small internal space of the machine body 1 on the disassembly of the throat pipe 8 and greatly improve the convenience. At the same time, the movable cup body 13, the spring 14 and the pressing piece 15 can make the main body support 3 and the X-axis slider 2 more tightly combined, so as to ensure the stability of the cooperation between the two and protect the stable and smooth printing. The communication and power supply of the machine body 1 and all electronic elements such as the extruder 4, the first heat dissipation fan 5 and the second heat dissipation fan 6 are integrated on the circuit integrated board 17, which can automatically and accurately control each electronic element and can be conveniently and quickly taken out when the circuit integrated board 17 fails.

[0042] It should be particularly pointed out that the installation angle of the circuit integrated board 17 can be in various forms, such as a horizontal state and a vertical state.

[0043] Optionally, the plug-in part 16 comprises a plurality of dovetail grooves 10 arranged on both sides of the front end of the X-axis slider 2 and a plurality of dovetail blocks arranged on the main body support 3.

[0044] The plurality of dovetail grooves 10 correspond to the plurality of dovetail blocks one by one.

[0045] Continuously push down the main body support 3 can force several dovetail blocks gradually inserted into several dovetail slots 10, and the main body support 3 is aligned with the dovetail slots 10 on the X-axis slider 2 and pushed down, which can gradually push the main body support 3 into the X-axis slider 2 until they are attached, thereby completing the main body combination of the main body support 3 and the X-axis slider 2 under the combination of several dovetail slots 10 and several dovetail blocks, ensuring that the extruder 4 can be quickly and directly removed to clean the consumable hole, and the extruder 4, the first cooling fan 5, the second cooling fan 6 and other parts can be taken out from the machine body 1 as a whole, and the throat pipe 8 can be separately disassembled for cleaning, thereby eliminating the influence of the small internal space of the machine body 1 on the disassembly of the throat pipe 8, and greatly improving the convenience.

[0046] It needs to be specifically pointed out that several dovetail slots 10 and several dovetail blocks can be other shapes, and the combination of the two can fix the main body support 3 on the X-axis slider 2.

[0047] Optionally, the top of the X-axis slider 2 is provided with two positioning circular grooves 11;

[0048] The part of the main body support 3 protruding to the rear side is provided with two reinforcing columns 12 downwardly installed,

[0049] The two positioning circular grooves 11 correspond to the two reinforcing columns 12 one by one;

[0050] After pushing down the main body support 3, the two reinforcing columns 12 can gradually fit into the two positioning circular grooves 11 with the downward movement of the main body support 3, and at the same time that several dovetail blocks begin to insert into several dovetail slots 10, the two reinforcing columns 12 are inserted into the two positioning circular grooves 11, thereby providing a guiding and positioning function for the combination of the main body support 3 and the X-axis slider 2 to prevent jamming and ensure that the main body support 3 can accurately butt joint with the dovetail slots 10, and after the main body support 3 and the X-axis slider 2 are combined, the combination of the two is reinforced to make them more stable.

[0051] It needs to be specifically pointed out that the two positioning circular grooves 11 and the two reinforcing columns 12 can be other shapes, such as rectangles, triangles and the like, which can tightly fit the two.

[0052] Optionally, a circular recess is formed in the front center of the X-axis slider 2, an activity cup body 13 is attached and installed in the circular recess, the front side of the activity cup body 13 is flush with the X-axis slider 2, a spring 14 is installed at one end of the activity cup body 13, and a pressing piece 15 is connected to the other end of the spring 14;

[0053] The pressing piece 15 slightly protrudes from the X-axis slider 2;

[0054] Push the main support 3 downwards along the dovetail grooves 10, and the main support 3 can gradually compress the spring 14 after abutting against the abutting piece 15, so that the abutting piece 15 is retracted into the movable cup body 13, and the main support 3 moves downwards, the abutting piece 15 is extruded, the spring 14 is compressed, the abutting piece 15 is gradually retracted into the movable cup body 13, and the main support 3 is given a reaction force by the abutting piece 15 under the elastic force of the spring 14, so that the main support 3 and the X-axis slider 2 are combined more closely, and the stability of the main support 3 and the X-axis slider 2 is further enhanced, so that the filament extruder 4, the first cooling fan 5 and the second cooling fan 6 on the main support 3 are not affected by unnecessary shaking of the main support 3 during printing, and the printing is effectively protected to be stable and smooth.

[0055] Optionally, the main support 3 is provided with a groove corresponding to the abutting piece 15.

[0056] After the main support 3 and the X-axis slider 2 are fully combined, the abutting piece 15 can rebound and be embedded into the groove on the main support 3, the groove on the main support 3 corresponds to the abutting piece 15 after the main support 3 is installed in place, so as to create a moving space for the abutting piece 15, the abutting piece 15 is clamped into the groove on the main support 3 under the rebound of the spring 14, the abutting piece 15 is embedded in the groove on the main support 3, so as to limit the slight movement of the main support 3 relative to the X-axis slider 2 by the blocking of the groove on the main support 3 to the abutting piece 15, the main support 3 and the X-axis slider 2 are combined more closely, and the stability of the combination of the main support 3 and the X-axis slider 2 is further enhanced.

[0057] Optionally, the abutting piece 15 is a sphere, so that the periphery of the abutting piece 15 is smooth, so that the abutting piece 15 can be smoothly extruded when the main support 3 is disassembled, and the movement of the main support 3 is prevented from being hindered by the abutting piece 15.

[0058] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick head-changing device for a 3D printer, characterized in that, include: The machine body (1), the X-axis slider (2), the plug-in part (16) and the main support (3); The X-axis slider (2) is slidably mounted on the X-axis of the body (1), and the main support (3) is connected to the X-axis slider (2) via a connector (16), wherein: Pulling up the main support (3) allows the insertion part (16) to separate from the X-axis slider (2); The quick head change device for the 3D printer also includes an extruder (4), a first cooling fan (5), a second cooling fan (6), an air guide (7), a throat (8), a heating block (9), and a circuit board (17) integrated on the main support (3).

2. The quick head-changing device for a 3D printer as described in claim 1, characterized in that, The plug-in part (16) includes several dovetail grooves (10) on both sides of the front end of the X-axis slider (2) and several dovetail blocks on the main body support (3). Each of the dovetail grooves (10) corresponds to one of the dovetail blocks.

3. The quick head-changing device for a 3D printer as described in claim 2, characterized in that, Continuously pushing the main support (3) downwards can force several of the dovetail blocks to gradually insert into several of the dovetail grooves (10).

4. The quick head-changing device for a 3D printer as described in claim 3, characterized in that, The top of the X-axis slider (2) has two positioning grooves (11). Two reinforcing columns (12) are installed downward on the rearward protruding part of the main support (3). The two positioning grooves (11) correspond one-to-one with the two reinforcing columns (12).

5. The quick head-changing device for a 3D printer as described in claim 4, characterized in that, After the main support (3) is pushed down, the two reinforcing columns (12) can gradually fit into the two positioning grooves (11) as the main support (3) moves down.

6. The quick head-changing device for a 3D printer as described in claim 5, characterized in that, A circular groove is provided in the center of the front of the X-axis slider (2). A movable cup (13) is fitted in the circular groove, and the front side of the movable cup (13) is flush with the X-axis slider (2). A spring (14) is installed in the movable cup (13) at one end, and a pressing member (15) is connected to the other end of the spring (14). The pressing member (15) protrudes slightly from the X-axis slider (2).

7. The quick head-changing device for a 3D printer as described in claim 6, characterized in that, The main support (3) is pushed down along several of the dovetail grooves (10). After the main support (3) abuts against the pressing member (15), it can gradually compress the spring (14) so ​​that the pressing member (15) retracts into the movable cup body (13).

8. The quick head-changing device for a 3D printer as described in claim 6, characterized in that, The main support (3) has a groove corresponding to the pressing member (15), wherein: After the main support (3) and the X-axis slider (2) are fully engaged, the pressing member (15) can bounce back and embed into the groove on the main support (3).

9. The quick head-changing device for a 3D printer as described in claim 8, characterized in that, The pressing element (15) is a sphere.

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