Combined type 3D printer capable of being quickly disassembled and assembled

Abstract

The utility model provides a combined type 3D printer capable of being rapidly disassembled and assembled. The combined type 3D printer comprises a base module, a Z-axis module, an X-axis module, a printing head module, a Y-axis module and a platform module. The base module comprises a base main body; the Z-axis connecting seat is detachably mounted on the base main body through a first clamping structure; the Y-axis module is detachably installed on the base body through a first rotary buckle structure and used for driving the Y-axis transfer unit to move in the Y-axis direction. The platform module is detachably mounted on the Y-axis transfer unit through a second rotary buckle structure; the Z-axis module is detachably installed on the Z-axis connecting base through a second clamping structure and used for driving the Z-axis transferring unit to move in the Z-axis direction perpendicular to the Y-axis direction. The X-axis module is detachably installed on the Z-axis transfer unit through a third rotary buckle structure and used for driving the X-axis transfer unit to move in the X-axis direction perpendicular to the Y-axis direction and the Z-axis direction at the same time. The printing head module is detachably installed on the X-axis transfer unit through a fourth rotary buckle structure.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, and in particular to a modular 3D printer that can be quickly assembled and disassembled. Background Technology

[0002] Currently, the main components of 3D printers on the market are usually fastened together with screws. Therefore, the disassembly and assembly of these main components is cumbersome and requires tools to tighten the screws. This is not conducive to the quick and convenient disassembly and assembly of 3D printers, making maintenance and upgrades inconvenient. Furthermore, due to the inconvenience of disassembly and assembly and the need for tools, these 3D printers are usually transported, carried, or stored in their fully assembled state. This results in the 3D printer occupying a large volume during transportation, carrying, or storage, wasting space, and being inconvenient to handle.

[0003] Existing technologies include some modular 3D printers that use snap-fit ​​structures for assembly and disassembly. However, these modules require multiple snap-fits and slots to work together, making assembly and disassembly still cumbersome. Furthermore, traditional snap-fit ​​structures have limited effectiveness in securing modules. Moreover, using only traditional snap-fit ​​structures makes it difficult to achieve precise 90-degree positioning between the 3D printer's base, print head, X-axis module, Y-axis module, and Z-axis module. Utility Model Content

[0004] This invention proposes a modular 3D printer that can be quickly assembled and disassembled to solve the technical problems of traditional 3D printers, such as inconvenient assembly and disassembly, limited fixation effect, and difficulty in accurately positioning the modules.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a modular 3D printer that can be quickly assembled and disassembled, comprising:

[0007] Base module, Z-axis module, X-axis module, printhead module, Y-axis module, and platform module;

[0008] The base module includes: a base body; and a Z-axis connector, which is detachably mounted to the base body via a first snap-fit ​​structure.

[0009] The Y-axis module is detachably mounted on the base body via a first rotary buckle structure, and is used to drive the Y-axis transfer unit to reciprocate and translate along the Y-axis direction.

[0010] The platform module is detachably mounted to the Y-axis transfer unit via a second rotary snap-fit ​​structure;

[0011] The Z-axis module is detachably mounted on the Z-axis connector via a second snap-fit ​​structure, and is used to drive the Z-axis transfer unit to reciprocate and lift along the Z-axis direction perpendicular to the Y-axis direction.

[0012] The X-axis module is detachably mounted on the Z-axis transfer unit via a third rotary buckle structure, which is used to drive the X-axis transfer unit to reciprocate and translate along the X-axis direction, which is perpendicular to both the Y-axis and Z-axis directions.

[0013] The printhead module is detachably mounted to the X-axis transfer unit via a fourth rotating snap-fit ​​structure, and is used to cooperate with the platform module to perform 3D printing operations.

[0014] Preferably, the Y-axis module includes:

[0015] Y-axis module frame;

[0016] The Y-axis guide structure is located on the Y-axis module frame and extends along the axial direction of the Y-axis module frame. The Y-axis transfer unit is movably mounted on the Y-axis guide structure.

[0017] The Y-axis drive device is located in the Y-axis module frame and is used to drive the Y-axis transfer unit to reciprocate along the Y-axis guide structure in the axial direction of the Y-axis module frame.

[0018] The first rotary snap-fit ​​structure includes:

[0019] A first rotary guide groove is provided on the top surface of the base body, and the first rotary guide groove is circular; a pair of first guide flanges are symmetrically arranged at the opening of the first rotary guide groove, and a first clearance opening is formed between the opposite inner sidewalls of the pair of first guide flanges, and a pair of first arc-shaped notches are formed between the opposite ends of the pair of first guide flanges; a pair of first limiting posts extend from the symmetrical ends of the pair of first guide flanges to the bottom of the first rotary guide groove; a pair of first limiting protrusions are symmetrically arranged on the inner sidewall of the first rotary guide groove.

[0020] The first rotating snap-fit ​​part includes: a first snap-fit ​​body, which is cylindrical and connected to an outer side of the Y-axis module frame, and matches the shape of the first clearance opening; a pair of first positioning flanges, which are symmetrically arranged on the periphery of the first rotating snap-fit ​​part and respectively match the shape of a pair of first arc-shaped notches, and the thickness of the first positioning flange matches the distance between the bottom surfaces of the first guide flange and the first rotating guide groove; and a pair of first positioning grooves, which are symmetrically arranged on the corresponding outer sides of the pair of first positioning flanges and respectively match the shape of a pair of first limiting protrusions.

[0021] Preferably, the platform module includes:

[0022] Platform base;

[0023] The platform carrier plate is mounted on the platform base via a flexible support structure.

[0024] The second rotary snap-fit ​​structure includes:

[0025] The second rotary guide groove is located on the other outer side of the first rotary latching part facing away from the Y-axis module frame, and the second rotary guide groove is circular; a pair of second guide flanges are symmetrically arranged at the opening of the second rotary guide groove, and a second clearance opening is formed between the opposite inner sidewalls of the pair of second guide flanges, and a pair of second arc-shaped notches are formed between the opposite ends of the pair of second guide flanges; a pair of second limiting posts extend from the symmetrical ends of the pair of second guide flanges to the bottom of the second rotary guide groove; a pair of second limiting protrusions are symmetrically arranged on the inner sidewall of the second rotary guide groove;

[0026] The second rotating latching part is disposed on the bottom surface of the platform base and includes: a second latching body, which is cylindrical and connected to the bottom surface of the platform base and matches the shape of the second clearance opening; a pair of second positioning flanges, which are symmetrically disposed on the periphery of the second rotating latching part and respectively match the shape of a pair of second arc-shaped notches, and the thickness of the second positioning flanges matches the distance between the bottom surfaces of the second guide flanges and the second rotating guide grooves; and a pair of second positioning grooves, which are symmetrically disposed on the corresponding outer sides of the pair of second positioning flanges and respectively match the shape of a pair of second limiting protrusions.

[0027] Preferably, the Z-axis module includes:

[0028] Z-axis module frame, one axial end of the Z-axis module frame is detachably mounted to the Z-axis connector via a second snap-fit ​​structure;

[0029] The Z-axis guide structure is located on the Z-axis module frame and extends along the axial direction of the Z-axis module frame. The Z-axis transfer unit is movably mounted on the Z-axis guide structure.

[0030] The Z-axis drive device is located in the Z-axis module frame and is used to drive the Z-axis transfer unit to reciprocate along the Z-axis guide structure in the axial direction of the Z-axis module frame.

[0031] The X-axis module includes:

[0032] X-axis module frame;

[0033] The X-axis guide structure is located on the X-axis module frame and extends along the axial direction of the X-axis module frame. The X-axis transfer unit is movably mounted on the X-axis guide structure.

[0034] The X-axis drive unit is located in the X-axis module frame and is used to drive the X-axis transfer unit to reciprocate along the X-axis guide structure in the axial direction of the X-axis module frame.

[0035] The third rotating snap-fit ​​structure includes:

[0036] The third rotary guide groove is located on one outer side of the Z-axis module frame and is circular. A pair of third guide flanges are symmetrically arranged at the opening of the third rotary guide groove. A third clearance opening is formed between the opposite inner walls of the pair of third guide flanges, and a pair of third arc-shaped notches are formed between the opposite ends of the pair of third guide flanges. A pair of third limiting posts extend from the symmetrical ends of the pair of third guide flanges to the bottom of the third rotary guide groove. A pair of third limiting protrusions are symmetrically arranged on the inner wall of the third rotary guide groove.

[0037] The third rotating snap-fit ​​part includes: a third snap-fit ​​body, which is cylindrical and connected to an outer side of the X-axis module frame, and matches the shape of the third clearance opening; a pair of third positioning flanges, which are symmetrically arranged around the periphery of the third rotating snap-fit ​​part, and respectively match the shape of a pair of third arc-shaped notches, and the thickness of the third positioning flanges matches the distance between the bottom surfaces of the third guide flange and the third rotating guide groove; and a pair of third positioning grooves, which are symmetrically arranged on the corresponding outer sides of the pair of third positioning flanges, and respectively match the shape of a pair of third limiting protrusions.

[0038] Preferably, the printhead module includes a printhead housing;

[0039] The fourth rotating snap-fit ​​structure includes:

[0040] The fourth rotary guide groove is located on the other outer side of the X-axis module frame opposite to the third rotary snap-fit ​​part, and the fourth rotary guide groove is circular; a pair of fourth guide flanges are symmetrically arranged at the opening of the fourth rotary guide groove, and a fourth clearance opening is formed between the opposite inner sidewalls of the pair of fourth guide flanges, and a pair of fourth arc-shaped notches are formed between the opposite ends of the pair of fourth guide flanges; a pair of fourth limiting posts extend from the symmetrical ends of the pair of fourth guide flanges to the bottom of the fourth rotary guide groove; a pair of fourth limiting protrusions are symmetrically arranged on the inner sidewall of the fourth rotary guide groove;

[0041] The fourth rotating latching part includes: a fourth latching body, which is cylindrical and connected to an outer side of the printhead housing, and matches the shape of the fourth clearance opening; a pair of fourth positioning flanges, which are symmetrically arranged around the periphery of the fourth rotating latching part, and respectively match the shape of a pair of fourth arc-shaped notches, and the thickness of the fourth positioning flanges matches the distance between the bottom surfaces of the fourth guide flange and the fourth rotating guide groove; and a pair of fourth positioning grooves, which are symmetrically arranged on the corresponding outer sides of the pair of fourth positioning flanges, and respectively match the shape of a pair of fourth limiting protrusions.

[0042] Preferably, the first snap-fit ​​structure includes:

[0043] A pair of protrusions are spaced apart on the top of the base body; a pair of spring-loaded latches are respectively provided on the pair of protrusions;

[0044] Several limiting pins are located at the top of the base body;

[0045] A pair of first elastic buckles are respectively located on opposite sides of the Z-axis connecting seat, and each is matched with a pair of spring buckle slots;

[0046] Several positioning slots are located at the bottom of the Z-axis connector and are respectively matched with each limit pin;

[0047] The second snap-fit ​​structure includes:

[0048] A U-shaped slot is located at the top of the Z-axis connector;

[0049] The U-shaped buckle is located at one axial end of the Z-axis module frame.

[0050] Preferably, the Y-axis guide structure, Z-axis guide structure, and X-axis guide structure are Y-axis guide rails, Z-axis guide rails, and X-axis guide rails integrally formed with the Y-axis module frame, Z-axis module frame, and X-axis module frame, respectively. The Y-axis transfer unit, Z-axis transfer unit, and X-axis transfer unit are Y-axis sliders, Z-axis sliders, and X-axis sliders that cooperate with the Y-axis guide structure, Z-axis guide structure, and X-axis guide structure, respectively.

[0051] Furthermore, the printhead module also includes:

[0052] The feed inlet and discharge outlet are located directly opposite the top and bottom of the printhead housing;

[0053] The print head is installed inside the print head housing, and the bottom of the print head has a nozzle that extends out of the discharge port;

[0054] The mounting bracket is located inside the printhead housing;

[0055] The drive shaft and driven shaft are mounted alternately on the mounting bracket;

[0056] The feeding gear and the feeding driven wheel are respectively mounted on the driving shaft and the driven shaft;

[0057] An adjusting tension spring is fitted onto the moving shaft and the driven shaft at its two ends, respectively.

[0058] The feeding drive device is located inside the printhead housing and is used to drive the drive shaft to rotate the feeding gear.

[0059] The printing filament enters the printhead housing through the inlet, passes through the gap between the feeding gear and the feeding driven wheel, and is squeezed and driven into the printhead by the oppositely rotating feeding gear and the feeding driven wheel. After being heated by the heating device inside the printhead, it is ejected from the nozzle.

[0060] Furthermore, the quick-assembly and disassembly modular 3D printer also includes:

[0061] The material rack module, detachably mounted on top of the Z-axis module, is used to install the material cylinder that provides printing consumables for the printhead module to perform 3D printing jobs.

[0062] Furthermore, the printhead module also includes:

[0063] The power supply is located inside the main body of the base;

[0064] The Type-C interface, located on one side of the base, is used to connect an external power source to power the device.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] The modular 3D printer provided by this utility model can be quickly assembled and disassembled. Its various modules can be quickly engaged through corresponding rotating snap-fit ​​structures, simplifying the assembly and disassembly of the whole machine. Moreover, its rotating snap-fit ​​structure has a good fixing effect between the modules, preventing them from being misaligned or falling off. At the same time, its rotating snap-fit ​​structure can achieve precise 90-degree positioning between the base, print head, X-axis module, Y-axis module and Z-axis module of the 3D printer. Attached Figure Description

[0067] To more clearly illustrate the technical solution proposed by this utility model, a detailed description is provided below in conjunction with the embodiments and accompanying drawings. It should be understood that the accompanying drawings described below are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0068] Figure 1 A schematic diagram of the assembly three-dimensional structure of an embodiment of the modular 3D printer provided by this utility model;

[0069] Figure 2 for Figure 1 An exploded three-dimensional diagram of the modular 3D printer in China;

[0070] Figure 3 A three-dimensional structural diagram of the Y-axis module of the modular 3D printer provided by this utility model;

[0071] Figure 4 for Figure 3 A cross-sectional view of the Y-axis module in the diagram;

[0072] Figure 5 A three-dimensional structural diagram of the printhead module of the combined 3D printer provided by this utility model;

[0073] Figure 6 for Figure 5 A cross-sectional view of the printhead module in the diagram;

[0074] Figure 7 Schematic diagram of the assembly operation of the print head module and X-axis module provided by this utility model Figure 1 ;

[0075] Figure 8 Schematic diagram of the assembly operation of the print head module and X-axis module provided by this utility model Figure 2 ;

[0076] Figure 9 Schematic diagram of the assembly operation of the print head module and X-axis module provided by this utility model Figure 3 ;

[0077] Figure 10 Assembly operation diagram of the X-axis module and Z-axis module provided by this utility model Figure 1 ;

[0078] Figure 11 Assembly operation diagram of the X-axis module and Z-axis module provided by this utility model Figure 2 ;

[0079] Figure 12 Assembly operation diagram of the X-axis module and Z-axis module provided by this utility model Figure 3 ;

[0080] Figure 13 Assembly operation diagram of the platform module and Y-axis module provided by this utility model Figure 1 ;

[0081] Figure 14 Assembly operation diagram of the platform module and Y-axis module provided by this utility model Figure 2 ;

[0082] Figure 15 Assembly operation diagram of the platform module and Y-axis module provided by this utility model Figure 3 ;

[0083] Figure 16 This invention provides an assembly diagram of the Y-axis module and the base module. Figure 1 ;

[0084] Figure 17 This invention provides an assembly diagram of the Y-axis module and the base module. Figure 2 ;

[0085] Figure 18 for Figure 17 A cross-sectional schematic diagram of the first rotary snap-fit ​​structure in the diagram;

[0086] Figure 19 This invention provides an assembly diagram of the Y-axis module and the base module. Figure 3 ;

[0087] Figure 20 for Figure 19 A cross-sectional schematic diagram of the first rotary snap-fit ​​structure in the diagram;

[0088] Figure 21 Schematic diagram of the assembly operation of the Z-axis connector and base module provided by this utility model Figure 1 ;

[0089] Figure 22 Schematic diagram of the assembly operation of the Z-axis connector and base module provided by this utility model Figure 2 ;

[0090] Figure 23 Schematic diagram of the assembly operation of the Z-axis module and Z-axis connector provided by this utility model Figure 1 ;

[0091] Figure 24 Schematic diagram of the assembly operation of the Z-axis module and Z-axis connector provided by this utility model Figure 2 ;

[0092] Figure 25 Assembly operation diagram of the material rack module and Z-axis module provided by this utility model Figure 1 ;

[0093] Figure 26 Assembly operation diagram of the material rack module and Z-axis module provided by this utility model Figure 2 .

[0094] The main markings in the attached figures are as follows:

[0095] 1. Base module; 11. Base body; 111. First rotary guide groove; 112. First guide flange; 113. First clearance opening; 114. First arc-shaped notch; 115. First limiting post; 116. First limiting protrusion; 117. Type-C interface; 118. Protrusion; 1181. Spring-loaded latch slot; 119. Limiting pin; 12. Z-axis connector; 121. First elastic latch; 122. Positioning slot; 123. U-shaped slot; 124. U-shaped latch; 2. Z-axis module; 21. Z-axis transfer unit; 22. Z-axis module frame; 221. Z-axis guide structure; 23. Material rack module; 3. X-axis module; 31. X-axis transfer unit; 32. X-axis module frame; 321. X-axis guide structure; 4. Print head module; 41. Feed inlet; 42. Discharge outlet; 43. Printer nozzle; 44. Mounting bracket; 45. Drive shaft; 451. Feed gear; 46. Driven shaft; 461. Feed driven wheel; 47. Adjusting tension spring; 48. Feed drive device; 49. Ceramic heating ring; 5. Y-axis module; 51. Y-axis transfer unit; 52. Y-axis module frame; 521. Y-axis guide structure; 522. Y-axis drive device; 6. Platform module; 61. Platform base; 62. Platform carrier plate; 63. Elastic support structure; 7. First rotating snap-fit ​​part; 71. First snap-fit ​​body; 72. First positioning flange; 721. First positioning groove; 8. First rotating snap-fit ​​structure; 9. Second rotating snap-fit ​​structure; 20. Third rotating snap-fit ​​structure; 30. Fourth rotating snap-fit ​​structure.

[0096] Other markings in the diagram are as follows:

[0097] A. First snap-fit ​​structure; B. Second snap-fit ​​structure; C. Printing consumables; X, X-axis direction; Y, Y-axis direction; Z, Z-axis direction. Detailed Implementation

[0098] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following description is provided in conjunction with the appendix. Figure 1-26 The present invention will be further described in detail with reference to the embodiments.

[0099] Please refer to the following: Figure 1-26 The modular 3D printer that can be quickly assembled and disassembled according to this utility model includes:

[0100] The system comprises a base module 1, a Z-axis module 2, an X-axis module 3, a printhead module 4, a Y-axis module 5, and a platform module 6. The base module 1 includes: a base body 11; a Z-axis connector 12, detachably mounted to the base body 11 via a first snap-fit ​​structure A; the Y-axis module 5, detachably mounted to the base body 11 via a first rotary snap-fit ​​structure 8, used to drive the Y-axis transfer unit 51 to reciprocate along the Y-axis direction; the platform module 6, detachably mounted to the Y-axis transfer unit 51 via a second rotary snap-fit ​​structure 9; and the Z-axis module 2... The second snap-fit ​​structure B is detachably mounted on the Z-axis connector 12 and is used to drive the Z-axis transfer unit 21 to reciprocate up and down along the Z-axis direction Z, which is perpendicular to the Y-axis direction Y. The X-axis module 3 is detachably mounted on the Z-axis transfer unit 21 via the third rotary snap-fit ​​structure 20 and is used to drive the X-axis transfer unit 31 to reciprocate translation along the X-axis direction X, which is perpendicular to both the Y-axis direction Y and the Z-axis direction Z. The print head module 4 is detachably mounted on the X-axis transfer unit 31 via the fourth rotary snap-fit ​​structure 30 and is used to cooperate with the platform module 6 to perform 3D printing operations.

[0101] Please see Figure 1 , 2 In this embodiment, the X-axis direction X and the Y-axis direction Y are horizontal directions that are perpendicular to each other, and the Z-axis direction Z is a vertical direction that is perpendicular to both the X-axis direction X and the Y-axis direction Y. That is, the X-axis, Y-axis and Z-axis constitute a three-dimensional coordinate system.

[0102] Please refer to the following: Figure 1 , 2 16, 17. In this embodiment, the base body 11 is rectangular, and one side of the base body 11 forms a downward recessed mounting step that is lower than the opposite side of the base body 11.

[0103] Please refer to the following: Figure 1-4 In this embodiment, the Y-axis module 5 includes:

[0104] The Y-axis module frame 52, during assembly, extends horizontally along the Y-axis direction. The Y-axis guide structure 521 is disposed on the Y-axis module frame 52 and extends along the axial direction of the Y-axis module frame 52. The Y-axis transfer unit 51 is movably mounted on the Y-axis guide structure 521. The Y-axis drive device 522 is disposed in the Y-axis module frame 52 and is used to drive the Y-axis transfer unit 51 to reciprocate along the Y-axis guide structure 521 in the axial direction of the Y-axis module frame 52.

[0105] Please refer to the following: Figure 1-4In a preferred embodiment, the Y-axis module frame 52 is rectangular and hollow. The Y-axis module frame 52 includes a base plate and side frames surrounding the four edges of the base plate and perpendicular to the base plate. The base plate and side frames form a mounting cavity inside the Y-axis module frame 52. The top ends of the side frames away from the base plate are open, communicating with the mounting cavity. A pair of Y-axis guide rails are integrally formed on the top ends of a pair of side plates on both axial sides of the Y-axis module frame 52. The Y-axis transfer unit 51 is a Y-axis slider, and a pair of Y-axis grooves matching the Y-axis guide rails are provided on opposite sides of the slider.

[0106] The Y-axis drive device 522 includes: a Y-axis synchronous belt pulley mechanism, which is located in the mounting cavity inside the Y-axis module frame 52; a Y-axis transfer unit 51 (Y-axis slider) which is mounted on the Y-axis synchronous belt of the Y-axis synchronous belt pulley mechanism and is movably mounted on the Y-axis module frame 52 through a pair of Y-axis sliding grooves that cooperate with a pair of Y-axis guide rails; and a first drive unit 25, which is located in the mounting cavity of the Y-axis module frame 52 and is used to drive the Y-axis synchronous belt of the Y-axis synchronous belt pulley mechanism to move in a forward and reverse cyclic motion along the Y-axis direction, thereby driving the Y-axis transfer unit 51 (Y-axis slider) to reciprocate and translate along the Y-axis direction.

[0107] Please refer to the following: Figure 1-4 16-20, In this embodiment, the first rotating buckle structure 8 includes:

[0108] A first rotary guide groove 111 is provided on the top surface of the mounting step of the base body 11, and the first rotary guide groove 111 is circular; a pair of first guide flanges 112 are symmetrically arranged at the edge of the first rotary guide groove 111 connecting to the top surface of the mounting step, and protrude towards the center of the first rotary guide groove 111; a first clearance opening 113 is formed between the relatively arc-shaped inner sidewalls of the pair of first guide flanges 112, and a pair of first arc-shaped notches 114 are formed between the relatively ends of the pair of first guide flanges 112; a pair of first limiting posts 115 extend from the symmetrical ends of the pair of first guide flanges 112 to the bottom of the first rotary guide groove 111; a pair of first limiting protrusions 116 are symmetrically arranged on the inner sidewall of the first rotary guide groove 111;

[0109] The first rotating snap-fit ​​part 7 includes: a first snap-fit ​​body 71, which is cylindrical and connected to an outer side of the side frame of the Y-axis module frame 52, and matches the shape and size of the first clearance opening 113; a pair of first positioning flanges 72, which are symmetrically protruding from the periphery of the first rotating snap-fit ​​part 7, and respectively match the shape and size of a pair of first arc-shaped notches 114, and the thickness of the first positioning flanges 72 matches the distance between the bottom surfaces of the first guide flange 112 and the first rotating guide groove 111; and a pair of first positioning grooves 721, which are symmetrically arranged on the corresponding outer sides of the pair of first positioning flanges 72, and respectively match the shape and size of a pair of first limiting protrusions 116.

[0110] The steps for assembling and disassembling the Y-axis module 5 from the base body 11 via the first rotary buckle structure 8 are as follows:

[0111] When a pair of first positioning flanges 72 are aligned with a pair of first arc-shaped notches 114 respectively, the first buckle body 71 can pass through the first clearance opening 113 to enter or exit the first rotating guide groove.

[0112] When the first buckle body 71 is inserted into the first clearance opening 113 and a pair of first positioning flanges 72 respectively abut against a pair of first limiting posts 115, the axial direction of the Y-axis module frame 52 is perpendicular to the Y-axis direction Y, and the Y-axis module frame 52 is in the disassembly / assembly position.

[0113] When the Y-axis module frame 52 is in the disassembly / assembly position, by rotating the Y-axis module frame 52 in the forward direction, a pair of first positioning flanges 72 are driven to rotate and slide synchronously in the forward direction along the inner sidewall of the first rotating guide groove 111 until the pair of first positioning flanges 72 are respectively engaged with a pair of first limiting protrusions 116. At this time, the axial direction of the Y-axis module frame 52 rotates 90 degrees in the forward direction to be parallel to the Y-axis direction Y, and the posture of the Y-axis module frame 52 switches to the locking position perpendicular to the disassembly / assembly position.

[0114] When the Y-axis module frame 52 is in the locked position, by rotating the Y-axis module frame 52 in the reverse direction, the pair of first positioning flanges 72 overcome and disengage from the restrictions of the pair of first limiting protrusions 116 respectively. Then, the pair of first positioning flanges 72 are driven to rotate and slide synchronously in the reverse direction along the inner sidewall of the first rotating guide groove 111 until the pair of first positioning flanges 72 abut against the pair of first limiting posts 115 respectively. At this time, the axial direction of the Y-axis module frame 52 is rotated 90 degrees in the reverse direction to be perpendicular to the Y-axis direction Y, and the posture of the Y-axis module frame 52 is reset to the disassembly and assembly position perpendicular to the locked position.

[0115] Please refer to the following: Figure 1-2 13-15, In this embodiment, platform module 6 includes:

[0116] Platform base 61; platform carrier plate 62, which is installed on platform base 61 through elastic support structure 63.

[0117] Please refer to the following: Figure 1-2 13-15, In this embodiment, the second rotary buckle structure 9 includes:

[0118] The second rotary guide groove is located on the other outer side of the first rotary latching part 7 facing away from the Y-axis module frame 52, and the second rotary guide groove is circular; a pair of second guide flanges are symmetrically arranged at the opening of the second rotary guide groove, and a second clearance opening is formed between the opposite inner sidewalls of the pair of second guide flanges, and a pair of second arc-shaped notches are formed between the opposite ends of the pair of second guide flanges; a pair of second limiting posts extend from the symmetrical ends of the pair of second guide flanges to the bottom of the second rotary guide groove; a pair of second limiting protrusions are symmetrically arranged on the inner sidewall of the second rotary guide groove;

[0119] The second rotating latching part is disposed on the bottom surface of the platform base 61 and includes: a second latching body, which is cylindrical and connected to the bottom surface of the platform base 61, and matches the shape of the second clearance opening; a pair of second positioning flanges, which are symmetrically disposed on the periphery of the second rotating latching part and respectively match the shape of a pair of second arc-shaped notches, and the thickness of the second positioning flanges matches the distance between the bottom surfaces of the second guide flanges and the second rotating guide grooves; and a pair of second positioning grooves, which are symmetrically disposed on the corresponding outer sides of the pair of second positioning flanges and respectively match the shape of a pair of second limiting protrusions.

[0120] Specifically, the structures of the second rotating guide groove, the second guide flange, the second arc-shaped notch, the second limiting post, the second limiting protrusion, and the second rotating snap-fit ​​part (including the second snap-fit ​​body, the second positioning flange, and the second positioning groove) of the second rotating snap-fit ​​structure 9 are similar to the structures of the first rotating guide groove 111, the first guide flange 112, the first arc-shaped notch 114, the first limiting post 115, the first limiting protrusion 116, and the first rotating snap-fit ​​part 7 (including the first snap-fit ​​body 71, the first positioning flange 72, and the first positioning groove 721) of the first rotating snap-fit ​​structure 8. The steps of assembling and disassembling the platform module 6 to the Y-axis transfer unit 51 through the second rotating snap-fit ​​structure 9 are the same as the steps of assembling and disassembling the Y-axis module 5 to the base body 11 through the first rotating snap-fit ​​structure 8, and will not be repeated here.

[0121] Please see Figure 3 , 4In this embodiment, the Z-axis module 2 includes: a Z-axis module frame 22, which extends vertically along the Z-axis direction Z during assembly; one axial end of the Z-axis module frame 22 is detachably mounted to the Z-axis connecting seat 12 via a second snap-fit ​​structure B; a Z-axis guide structure 221 is disposed on the Z-axis module frame 22 and extends along the axial direction of the Z-axis module frame 22, and the Z-axis transfer unit 21 is movably mounted on the Z-axis guide structure 221; and a Z-axis drive device is disposed in the Z-axis module frame 22 and is used to drive the Z-axis transfer unit 21 to reciprocate along the Z-axis guide structure 221 in the axial direction of the Z-axis module frame 22.

[0122] The X-axis module 3 includes: an X-axis module frame 32, which, during assembly, extends horizontally along the X-axis direction; an X-axis guide structure 321, disposed on the X-axis module frame 32 and extending along the axial direction of the X-axis module frame 32, on which the X-axis transfer unit 31 is movably mounted; and an X-axis drive device, disposed in the X-axis module frame 32, for driving the X-axis transfer unit 31 to reciprocate along the X-axis guide structure 321 in the axial direction of the X-axis module frame 32.

[0123] Specifically, the Z-axis module frame 22 / X-axis module frame 32, Z-axis guide structure 221 / X-axis guide structure 321, Z-axis drive device / X-axis drive device are similar in structure to the Y-axis module frame 52, Y-axis guide structure 521, and Y-axis drive device 522, respectively, and will not be described in detail here.

[0124] Please see Figure 3 , 4 In this embodiment, the Y-axis guide structure 521, Z-axis guide structure 221, and X-axis guide structure 321 are Y-axis guide rails, Z-axis guide rails, and X-axis guide rails integrally formed from POM material, corresponding to the Y-axis module frame 52, Z-axis module frame 22, and X-axis module frame 32, respectively. The Y-axis transfer unit 51, Z-axis transfer unit 21, and X-axis transfer unit 31 are Y-axis sliders, Z-axis sliders, and X-axis sliders, respectively, which cooperate with the Y-axis guide structure 521, Z-axis guide structure 221, and X-axis guide structure 321 and are made of POM material. The POM material makes the sliders more wear-resistant and provides better lubrication, resulting in high transmission stability and smoothness when combined with the integral profile guide rails.

[0125] Please see Figure 3 , 4 In this embodiment, the Y-axis drive device 522, the Z-axis drive device and the X-axis drive device all include a drive motor and a synchronous belt pulley mechanism driven by the drive motor. The Y-axis transfer unit 51, the Z-axis transfer unit 21 and the X-axis transfer unit 3 are respectively installed on the synchronous belts of the corresponding synchronous belt pulley mechanisms of the Y-axis drive device 522, the Z-axis drive device and the X-axis drive device.

[0126] In other embodiments (not shown in the figures), the Y-axis drive device 522, the Z-axis drive device, and the X-axis drive device may also use linear transmission mechanisms such as gear racks, lead screws, and nuts instead of synchronous belt pulley mechanisms.

[0127] Please refer to the following: Figure 1-4 10-12, the third rotary buckle structure 20 includes: a third rotary guide groove, located on one outer side of the Z-axis module frame 22, the third rotary guide groove being circular; a pair of third guide flanges, symmetrically arranged at the opening of the third rotary guide groove, a third clearance opening being formed between the opposite inner sidewalls of the pair of third guide flanges, and a pair of third arc-shaped notches being formed between the opposite ends of the pair of third guide flanges; a pair of third limiting posts, respectively extending from the symmetrical ends of the pair of third guide flanges to the bottom of the third rotary guide groove; and a pair of third limiting protrusions, symmetrically arranged on the inner sidewall of the third rotary guide groove.

[0128] The third rotating snap-fit ​​part includes: a third snap-fit ​​body, which is cylindrical and connected to an outer side of the X-axis module frame 32, and matches the shape of the third clearance opening; a pair of third positioning flanges, which are symmetrically arranged on the periphery of the third rotating snap-fit ​​part and respectively match the shape of a pair of third arc-shaped notches, and the thickness of the third positioning flange matches the distance between the bottom surfaces of the third guide flange and the third rotating guide groove; and a pair of third positioning grooves, which are symmetrically arranged on the corresponding outer sides of the pair of third positioning flanges and respectively match the shape of a pair of third limiting protrusions.

[0129] Specifically, the structures of the third rotary guide groove, the third guide flange, the third arc-shaped notch, the third limiting post, the third limiting protrusion, and the third rotary latching part (including the third latching body, the third positioning flange, and the third positioning groove) of the third rotary latching structure 20 are similar to the structures of the first rotary guide groove 111, the first guide flange 112, the first arc-shaped notch 114, the first limiting post 115, the first limiting protrusion 116, and the first rotary latching part 7 (including the first latching body 71, the first positioning flange 72, and the first positioning groove 721) of the first rotary latching structure 8. The steps of disassembling and assembling the X-axis module 3 to the Z-axis transfer unit 21 through the third rotary latching structure 20 are the same as the steps of disassembling and assembling the Y-axis module 5 to the base body 11 through the first rotary latching structure 8, and will not be repeated here.

[0130] Please refer to the following: Figure 1-4 7-9, In ​​this embodiment, the printhead module 4 includes a printhead housing;

[0131] The fourth rotary latch structure 30 includes: a fourth rotary guide groove, located on the other outer side of the X-axis module frame 32 opposite to the third rotary latching part, the fourth rotary guide groove being circular; a pair of fourth guide flanges, symmetrically arranged at the opening of the fourth rotary guide groove, a fourth clearance opening being formed between the opposite inner sidewalls of the pair of fourth guide flanges, and a pair of fourth arc-shaped notches being formed between the opposite ends of the pair of fourth guide flanges; a pair of fourth limiting posts, extending from the symmetrical ends of the pair of fourth guide flanges to the bottom of the fourth rotary guide groove; and a pair of fourth limiting protrusions, symmetrically arranged on the inner sidewall of the fourth rotary guide groove.

[0132] The fourth rotating latching part includes: a fourth latching body, which is cylindrical and connected to an outer side of the printhead housing, and matches the shape of the fourth clearance opening; a pair of fourth positioning flanges, which are symmetrically arranged around the periphery of the fourth rotating latching part, and respectively match the shape of a pair of fourth arc-shaped notches, the thickness of the fourth positioning flanges matching the distance between the bottom surfaces of the fourth guide flanges and the fourth rotating guide grooves; and a pair of fourth positioning grooves, which are symmetrically arranged on the corresponding outer sides of the pair of fourth positioning flanges, and respectively match the shape of a pair of fourth limiting protrusions.

[0133] The fourth rotating guide groove, fourth guide flange, fourth arc-shaped notch, fourth limiting post, fourth limiting protrusion, and fourth rotating snap-fit ​​part (including the fourth snap-fit ​​body, fourth positioning flange, and fourth positioning groove) of the fourth rotating snap-fit ​​structure 30 are similar to the first rotating guide groove 111, first guide flange 112, first arc-shaped notch 114, first limiting post 115, first limiting protrusion 116, and first rotating snap-fit ​​part 7 (including the first snap-fit ​​body 71, first positioning flange 72, and first positioning groove 721) of the first rotating snap-fit ​​structure 8. The steps of disassembling and assembling the printhead module 4 to the X-axis transfer unit 31 through the fourth rotating snap-fit ​​structure 30 are the same as the steps of disassembling and assembling the Y-axis module 5 to the base body 11 through the first rotating snap-fit ​​structure 8, and will not be repeated here.

[0134] Please see Figure 21 , 22 In this embodiment, the first snap-fit ​​structure A includes: a pair of protrusions 118, spaced apart at the top of the base body 11; a pair of spring-loaded snap-fit ​​slots 1181, respectively disposed on the pair of protrusions 118; a plurality of limiting pins 119, disposed at the top of the base body 11; a pair of first elastic snaps 121, respectively disposed on opposite sides of the Z-axis connecting seat 12, and respectively matching the pair of spring-loaded snap-fit ​​slots 1181; and a plurality of positioning slots 122, disposed at the bottom of the Z-axis connecting seat 12 and respectively matching each limiting pin 119.

[0135] Please see Figure 23 , 24In this embodiment, the second snap-fit ​​structure B includes: a U-shaped slot 123, located at the top of the Z-axis connecting seat 12; and a U-shaped buckle 124, located at one axial end of the Z-axis module frame 22.

[0136] Please refer to the following: Figure 1-2 5-6, In this embodiment, the printhead module 4 further includes:

[0137] The inlet 41 and outlet 42 are located opposite each other at the top and bottom of the printhead housing; the printhead 43 is installed inside the printhead housing, and the bottom end of the printhead 43 has a nozzle that extends out of the outlet 42; the mounting bracket 44 is located inside the printhead housing; the drive shaft 45 and the driven shaft 46 are installed at intervals on the mounting bracket 44; the feeding gear 451 and the feeding driven wheel 461 are respectively installed on the drive shaft 45 and the driven shaft 46; the adjusting tension spring 47 has its two ends respectively sleeved on the drive shaft and the driven shaft 46; the feeding drive device 48 is located inside the printhead housing and is used to drive the drive shaft 45 to drive the feeding gear 451 to rotate; the ceramic heating ring 49 is sleeved at the nozzle of the printhead 43 to melt the printing consumables delivered to the nozzle into a liquid state and then extrude them.

[0138] When the printhead module 4 is working, the ceramic heating ring 49 is first heated to the set temperature by the control device of the 3D printer. Then, the control device controls the feeding drive device 48 to drive the feeding gear 451 to rotate counterclockwise. The printing material is manually fed into the feed port 41 and conveyed to the gap between the feeding gear and the feeding passive wheel. The printing material C entering the printhead housing from the feed port 41 passes through the gap between the feeding gear 451 and the feeding passive wheel 461. The feeding gear 451 and the feeding passive wheel 461, which rotate in opposite directions, mesh and squeeze the printing material C to push it downward into the printhead 43. After being heated by the ceramic heating ring 49 inside the printhead 43, it is ejected from the nozzle at the bottom of the printhead 43 and extruded downward into the discharge port 42.

[0139] Please refer to the following: Figure 1-2 In the preferred embodiment of this invention, the adjusting spring 47 is provided with a pair of hooks, and the two ends of the adjusting spring 47 are respectively sleeved on the drive shaft 45 and the driven shaft 46 through a pair of hooks. When the feeding gear 451 engages with the printing consumable C and squeezes the feeding passive wheel 461, the distance between the driven shaft 46 and the feeding passive wheel 461 and the drive shaft 45 and the feeding gear 451 will be automatically adjusted according to the outer diameter of the printing consumable C. Thus, the tightness of the feeding gear 451 and the feeding passive wheel 461 squeezing the printing consumable C will be automatically adjusted according to the outer diameter tolerance of the printing consumable C, so that the two can better engage the printing consumable C and avoid feeding failure due to the printing consumable C being too tight or too fed during the feeding process.

[0140] In this embodiment, the feeding drive device 48 is preferably a feeding drive motor, and the drive shaft 45 is mounted on the output shaft of the feeding drive motor.

[0141] Please refer to the following: Figure 1-2 25-26 In this embodiment, the quick-assembly and disassembly modular 3D printer further includes: a material rack module 23, which is detachably mounted on top of the Z-axis module 2 and is used to install a material cylinder that provides printing consumables C for the print head module 4 to perform 3D printing operations.

[0142] Please see Figure 1-2 In this embodiment, the printhead module 4 further includes:

[0143] The power supply unit (not shown in the figure) is located inside the base body 11; a Type-C interface 117 is located on one side of the base body 11 and is used to connect an external power source to power the power supply unit. Using the Type-C interface 117 improves the adaptability and versatility of the modular 3D printer, is more environmentally friendly, and provides a more stable power supply. The printhead module 4 uses an integrated heat-dissipating sheet metal housing with ventilation holes to better dissipate heat from the motor and nozzle. The printhead module 4 has a built-in integrated cooling fan, and cooling vents are located on the upper and lower sides of its housing to cool the internal structure and printing consumables.

[0144] Please refer to the following: Figure 7-26 The assembly steps of the quick-assembly and disassembly modular 3D printer provided by this utility model are as follows:

[0145] S1: The printhead module 4 is assembled to the X-axis transfer unit 31 of the X-axis module 3 via the fourth rotating snap-fit ​​structure 30; S2: The X-axis module 3, together with the printhead module 4, is assembled to the Z-axis transfer unit 21 of the Z-axis module 2 via the third rotating snap-fit ​​structure 20; S3: The platform module 6 is assembled to the Y-axis transfer unit 51 of the Y-axis module 5 via the second rotating snap-fit ​​structure 9; S4: The Y-axis module 5, together with the platform module 6, is assembled to the base body 11 of the base module 1 via the first rotating snap-fit ​​structure 8; S5: The Z-axis connecting seat 12 is assembled to the base body 11 of the base module 1 via the first snap-fit ​​structure A; S6: The Z-axis module 2, together with the X-axis module 3 and the printhead module 4, is assembled to the Z-axis connecting seat 12 via the second snap-fit ​​structure B; S7: The material rack module 23 is assembled to the top of the Z-axis module 2 via the third snap-fit ​​structure (preferably a snap-fit ​​slot structure, not shown in the figure).

[0146] 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 utility model.

Claims

1. A quick detachable combined 3D printer, characterized in that, Comprise: Base module (1), Z axis module (2), X axis module (3), print head module (4), Y axis module (5) and platform module (6); The base module (1) comprises: base body (11); Z axis connecting seat (12), through the first clamping structure (A) is detachably mounted on the base body (11); The Y axis module (5) is detachably mounted on the base body (11) through the first rotating buckle structure (8), which is used for driving the Y axis transfer unit (51) to reciprocatingly translate along the Y axis direction (Y); The platform module (6) is detachably mounted on the Y axis transfer unit (51) through the second rotating buckle structure (9); The Z axis module (2) is detachably mounted on the Z axis connecting seat (12) through the second clamping structure (B), which is used for driving the Z axis transfer unit (21) to reciprocatingly lift along the Z axis direction (Z) perpendicular to the Y axis direction (Y); The X axis module (3) is detachably mounted on the Z axis transfer unit (21) through the third rotating buckle structure (20), which is used for driving the X axis transfer unit (31) to reciprocatingly translate along the X axis direction (X) perpendicular to the Y axis direction (Y) and the Z axis direction (Z); The print head module (4) is detachably mounted on the X axis transfer unit (31) through the fourth rotating buckle structure (30), which is used for cooperating with the platform module (6) to perform 3D printing operation.

2. The quick detachable combined 3D printer of claim 1, wherein, The Y axis module (5) comprises: Y axis module (5) frame; Y axis guide structure (521), which is provided on the Y axis module (5) frame and extends along the axial direction of the Y axis module (5) frame, and the Y axis transfer unit (51) is movably mounted on the Y axis guide structure (521); Y axis driving device (522), which is provided in the Y axis module (5) frame and is used for driving the Y axis transfer unit (51) to reciprocate along the Y axis guide structure (521) in the axial direction of the Y axis module (5) frame; The first rotating buckle structure (8) comprises: First rotating guide groove (111), which is provided on the top end surface of the base body (11), and the first rotating guide groove (111) is circular;A pair of first guide flanges (112) are symmetrically arranged at the mouth of the first rotating guide groove (111), a first clearance opening (113) is formed between the opposite inner side walls of a pair of the first guide flanges (112), a pair of first arc-shaped notches (114) are respectively formed between the opposite ends of a pair of the first guide flanges (112);A pair of first limiting columns (115) respectively extend from the symmetric ends of a pair of the first guide flanges (112) to the bottom of the first rotating guide groove (111);A pair of first limiting protrusions (116) are symmetrically arranged on the inner side wall of the first rotating guide groove (111); The first rotating clamping part (7) comprises: a first clamping body (71) in a cylindrical shape and connected to one outer side of the Y-axis module (5) frame and matched with the shape of the first displacement opening (113); a pair of first positioning flanges (72) symmetrically arranged on the circumference of the first rotating clamping part (7) and respectively matched with the shape of a pair of the first arc-shaped notches (114), and the thickness of the first positioning flanges (72) is matched with the spacing between the first guide flanges (112) and the bottom surface of the first rotating guide groove (111); and a pair of first positioning grooves (721) symmetrically arranged on the corresponding outer sides of the pair of first positioning flanges (72) and respectively matched with the shape of a pair of the first limiting protrusions (116).

3. The quick detachable combined 3D printer of claim 2, wherein, The platform module (6) comprises: a platform base (61); a platform carrier plate (62) mounted on the platform base (61) through an elastic support structure (63); The second rotating clamping structure (9) comprises: a second rotating guide groove provided on the other outer side of the Y-axis module (5) frame away from the first rotating clamping part (7), the second rotating guide groove being circular; a pair of second guide flanges symmetrically arranged on the mouth of the second rotating guide groove, a second displacement opening being formed between the opposite inner side walls of the pair of second guide flanges, and a pair of second arc-shaped notches being respectively formed between the opposite ends of the pair of second guide flanges; a pair of second limiting columns respectively extending from the symmetric ends of the pair of second guide flanges to the bottom of the second rotating guide groove; and a pair of second limiting protrusions symmetrically arranged on the inner side walls of the second rotating guide groove; a second rotating clamping part provided on the bottom surface of the platform base (61) and comprising: a second clamping body in a cylindrical shape and connected to the bottom surface of the platform base (61) and matched with the shape of the second displacement opening; a pair of second positioning flanges symmetrically arranged on the circumference of the second rotating clamping part and respectively matched with the shape of a pair of the second arc-shaped notches, and the thickness of the second positioning flanges is matched with the spacing between the second guide flanges and the bottom surface of the second rotating guide groove; and a pair of second positioning grooves symmetrically arranged on the corresponding outer sides of the pair of second positioning flanges and respectively matched with the shape of a pair of the second limiting protrusions.

4. The quick detachable combined 3D printer of claim 2, wherein, The Z-axis module (2) comprises: a Z-axis module (2) frame, one end of the Z-axis module (2) frame being detachably mounted on the Z-axis connecting seat (12) through the second clamping structure (B); a Z-axis guide structure (221) provided on the Z-axis module (2) frame and extending along the axial direction of the Z-axis module (2) frame, the Z-axis moving unit (21) being movably mounted on the Z-axis guide structure (221); a Z-axis driving device provided in the Z-axis module (2) frame and used for driving the Z-axis moving unit (21) to reciprocate along the Z-axis guide structure (221) in the axial direction of the Z-axis module (2) frame; The X-axis module (3) comprises: an X-axis module (3) frame; An X-axis guide structure (321) is arranged on the X-axis module (3) frame and extends along the axial direction of the X-axis module (3) frame, and the X-axis transfer unit (31) is movably mounted on the X-axis guide structure (321); An X-axis driving device is arranged in the X-axis module (3) frame and is used to drive the X-axis transfer unit (31) to reciprocate along the X-axis guide structure (321) in the axial direction of the X-axis module (3) frame; The third rotating buckle structure (20) comprises: A third rotating guide groove is arranged on one outer side of the Z-axis module (2) frame, and the third rotating guide groove is circular; a pair of third guide flanges are symmetrically arranged at the mouth of the third rotating guide groove, a third accommodation opening is formed between the opposite inner side walls of the pair of third guide flanges, and a pair of third arc-shaped notches are respectively formed between the opposite ends of the pair of third guide flanges; a pair of third limiting columns are respectively extended from the symmetric ends of the pair of third guide flanges to the bottom of the third rotating guide groove; and a pair of third limiting protrusions are symmetrically arranged on the inner side walls of the third rotating guide groove; The third rotating buckle part comprises: a third buckle main body which is cylindrical and connected to one outer side of the X-axis module (3) frame and matches the shape of the third accommodation opening; a pair of third positioning flanges which are symmetrically arranged on the circumference of the third rotating buckle part and respectively match the shape of the pair of third arc-shaped notches, and the thickness of the third positioning flanges matches the spacing between the third guide flanges and the bottom of the third rotating guide groove; and a pair of third positioning grooves which are symmetrically arranged on the corresponding outer sides of the pair of third positioning flanges and respectively match the shape of the pair of third limiting protrusions. 5.The quick detachable combined 3D printer of claim 4, wherein, The print head module (4) comprises a print head shell; The fourth rotating buckle structure (30) comprises: A fourth rotating guide groove is arranged on the other outer side of the X-axis module (3) frame away from the third rotating buckle part, and the fourth rotating guide groove is circular; a pair of fourth guide flanges are symmetrically arranged at the mouth of the fourth rotating guide groove, a fourth accommodation opening is formed between the opposite inner side walls of the pair of fourth guide flanges, and a pair of fourth arc-shaped notches are respectively formed between the opposite ends of the pair of fourth guide flanges; a pair of fourth limiting columns are respectively extended from the symmetric ends of the pair of fourth guide flanges to the bottom of the fourth rotating guide groove; and a pair of fourth limiting protrusions are symmetrically arranged on the inner side walls of the fourth rotating guide groove; The fourth rotating buckle part comprises: a fourth buckle main body which is cylindrical and connected to one outer side of the print head shell and matches the shape of the fourth accommodation opening; a pair of fourth positioning flanges which are symmetrically arranged on the circumference of the fourth rotating buckle part and respectively match the shape of the pair of fourth arc-shaped notches, and the thickness of the fourth positioning flanges matches the spacing between the fourth guide flanges and the bottom of the fourth rotating guide groove; and a pair of fourth positioning grooves which are symmetrically arranged on the corresponding outer sides of the pair of fourth positioning flanges and respectively match the shape of the pair of fourth limiting protrusions. 6.The quick detachable combined 3D printer of claim 4, wherein, The first buckle structure (A) comprises: A pair of protrusions are arranged at the top end of the base body (11); a pair of elastic buckle slots are respectively arranged on the pair of protrusions; A plurality of limiting pins are arranged at the top end of the base body (11); A pair of first elastic buckles are respectively arranged on the opposite sides of the Z-axis connecting seat (12) and are respectively matched with the pair of elastic buckle slots; A plurality of positioning slots are arranged at the bottom end of the Z-axis connecting seat (12) and are respectively matched with the corresponding limiting pins; The second clamping structure (B) comprises: A U-shaped buckle slot is arranged at the top end of the Z-axis connecting seat (12); A U-shaped buckle is arranged at one end of the Z-axis module (2) frame in the axial direction.

7. The quick detachable combined 3D printer of claim 4, wherein, The Y-axis guide structure (521), the Z-axis guide structure (221) and the X-axis guide structure (321) are respectively Y-axis guide rails, Z-axis guide rails and X-axis guide rails which are integrally formed with the Y-axis module (5) frame, the Z-axis module (2) frame and the X-axis module (3) frame; the Y-axis moving unit (51), the Z-axis moving unit (21) and the X-axis moving unit (31) are respectively Y-axis sliders, Z-axis sliders and X-axis sliders which are matched with the Y-axis guide structure (521), the Z-axis guide structure (221) and the X-axis guide structure (321).

8. The quick detachable combined 3D printer according to any one of claims 1-7, characterized in that, The print head module (4) further comprises: An inlet (41) and an outlet (42) are arranged opposite to the top and bottom of the print head shell; A print nozzle (43) is installed inside the print head shell, and the bottom end of the print nozzle (43) is provided with a nozzle which extends out of the outlet (42); A mounting bracket (44) is arranged inside the print head shell; A driving shaft (45) and a driven shaft (46) are arranged on the mounting bracket (44); A feeding gear (451) and a feeding driven wheel (461) are respectively arranged on the driving shaft (45) and the driven shaft (46); An adjusting tension spring (47) is arranged on the driving shaft and the driven shaft (46); A feeding driving device (48) is arranged inside the print head shell for driving the driving shaft (45) to rotate the feeding gear (451); The printing consumables (C) entering the print head shell from the inlet (41) pass through the gap between the feeding gear (451) and the feeding driven wheel (461), are extruded by the opposite rotating feeding gear (451) and the feeding driven wheel (461), and are driven into the print nozzle (43) inside, and are then sprayed from the nozzle after being heated by the heating device inside the print nozzle (43).

9. The quick detachable combined 3D printer according to any one of claims 1-7, characterized in that, Further comprising: A rack module (23) is detachably mounted on the top of the Z-axis module (2) for mounting a cartridge for providing printing consumables (C) for the print head module (4) to perform 3D printing.

10. The quick detachable combined 3D printer according to any one of claims 1-7, characterized in that, The print head module (4) further comprises: A power supply device is arranged inside the base body (11); A Type-C interface (117) is arranged on one side of the base body (11) for connecting an external power supply to supply power to the power supply device.

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