Three-dimensional printing device

Abstract

The utility model relates to the technical field of three-dimensional printing, and particularly discloses a three-dimensional printing device which comprises a supporting frame, a first adjusting mechanism, a second adjusting mechanism, a third adjusting mechanism, a material extruding mechanism, a rotating mechanism and a printing supporting mechanism. Due to the arrangement of the first adjusting mechanism, the second adjusting piece and the third adjusting piece, the material extrusion mechanism has freedom degrees in three directions; and the rotating mechanism and the printing supporting mechanism are arranged, so that the printing supporting mechanism can rotate in two directions, then the three-dimensional printing device has five degrees of freedom, and when a workpiece is printed, the rotating mechanism and the printing supporting mechanism can be used for rotating the printed workpiece, so that the influence of gravity on the overhanging structure is counteracted; compared with a mode of realizing multi-degree-of-freedom support-free printing by utilizing a six-axis mechanical arm, the three-dimensional printing device disclosed by the utility model has the advantages of large printing space and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional printing, in particular to a three-dimensional printing device. Background Art

[0002] Three-dimensional printing: 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses 3D model files as the basis and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] When ordinary 3D printing devices print overhanging structures, due to the limitation of degrees of freedom, the overhanging structures cannot overcome the influence of gravity on them, resulting in the failure of printing before the material of the overhanging structure solidifies. In the prior art, a six-axis robot carrying an extruder realizes unsupported printing. A printing platform is placed on a plane, and then the six-axis robot can use multiple degrees of freedom to realize unsupported printing. However, the prior art method of using a six-axis robot to realize multi-degree-of-freedom unsupported printing has the problems of limited printing space and high cost. Utility Model Content

[0004] The purpose of the utility model is to provide a three-dimensional printing device to solve the problem of limited printing space and high cost in the prior art method of using a six-axis mechanical arm to achieve multi-degree-of-freedom support-free printing.

[0005] To solve the above problems, the utility model provides a three-dimensional printing device, which includes a support frame; a first adjustment mechanism, including a first adjustment member, which is adjustably arranged on the support frame along a first direction; a second adjustment mechanism, including a second adjustment member, which is adjustably arranged on the first adjustment member along a second direction; a third adjustment mechanism, including a third adjustment member, which is adjustably arranged on the second adjustment member along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; a material extrusion mechanism, which is arranged on the third adjustment member, and the material extrusion mechanism is used to extrude printing material; a rotating mechanism, which is rotatably arranged on the support frame; a printing support mechanism, which is rotatably arranged on the rotating mechanism, the rotating axis of the rotating mechanism is perpendicular to the rotating axis of the printing support mechanism, and the printing support mechanism is used to support the printing material extruded by the material extrusion mechanism.

[0006] As an optional technical solution for the three-dimensional printing device, the rotating mechanism includes a rotating seat and a first rotating structure. The rotating seat is arranged on the support frame, the first rotating structure is rotatably arranged on the rotating seat, and the printing support mechanism is arranged on the first rotating structure.

[0007] As an optional technical solution for the three-dimensional printing device, the first rotating structure includes a first rotating motor and a first rotating disk. The first rotating motor is arranged on a rotating seat. The output end of the first rotating motor is drivingly connected to the first rotating disk. The first rotating disk is connected to a printing support mechanism. The first rotating motor drives the first rotating disk to rotate, and the first rotating disk drives the printing support mechanism to rotate.

[0008] As an optional technical solution for the three-dimensional printing device, the printing support mechanism includes a printing frame, a second rotating structure and a printing table. The printing frame is arranged on the rotating mechanism, the second rotating structure is rotatably arranged on the printing frame, and the printing table is arranged on the second rotating structure.

[0009] As an optional technical solution for the three-dimensional printing device, the second rotating structure includes a connecting plate, a second rotating motor and a second rotating disk. The connecting plate is connected to the printing frame, the second rotating motor is installed on the connecting plate, the output end of the second rotating motor is connected to the second rotating disk, the printing table and the second rotating disk are connected, the second rotating motor drives the second rotating disk to rotate, and the second rotating disk drives the printing table to rotate.

[0010] As an optional technical solution for the three-dimensional printing device, the first adjustment mechanism includes a first adjustment structure and a second adjustment structure, the first adjustment member includes a first adjustment block and a second adjustment block, the first adjustment structure and the second adjustment structure are respectively arranged at two ends of the bottom of the support frame, the first adjustment structure can drive the first adjustment block to move along the first direction, and the second adjustment structure can drive the second adjustment block to move along the first direction.

[0011] As an optional technical solution for the three-dimensional printing device, the first adjustment structure includes a first drive motor, a first screw rod and a first connecting seat. Along the first direction, the first drive motor and the first connecting seat are respectively connected to the two ends of the bottom of the support frame, the output end of the first drive motor is connected to one end of the first screw rod, and the other end of the first screw rod is rotatably connected to the first connecting seat. The first adjustment block is sleeved on the first screw rod and cooperates with the first screw rod thread. The first drive motor drives the first screw rod to rotate, and the first screw rod drives the first adjustment block to move along the first direction.

[0012] As an optional technical solution for the three-dimensional printing device, the second adjustment mechanism includes a third adjustment structure and a fourth adjustment structure, the second adjustment member includes a third adjustment block and a fourth adjustment block, one end of the third adjustment structure is connected to the first adjustment block, the other end of the third adjustment structure is slidably connected to the top of the support frame, one end of the fourth adjustment structure is connected to the second adjustment block, the other end of the fourth adjustment structure is slidably connected to the top of the support frame, the third adjustment structure can drive the third adjustment block to move along the second direction, and the fourth adjustment structure can drive the fourth adjustment block to move along the second direction.

[0013] As an optional technical solution for the three-dimensional printing device, the third adjustment mechanism includes a second drive motor, a second screw rod and a second connecting seat. One of the second drive motor and the second connecting seat is connected to the third adjustment block, and the other is connected to the fourth adjustment block. The output end of the second drive motor is connected to the second screw rod. The third adjustment piece is sleeved on the second screw rod and cooperates with the second screw rod thread. The second drive motor drives the second screw rod to rotate, and the second screw rod drives the third adjustment piece to move along the third direction.

[0014] As an optional technical solution for a three-dimensional printing device, a material extrusion mechanism includes a cover plate, a throat, a heat sink, a heater, an extrusion structure and a nozzle. The cover plate is connected to a third adjustment member. One end of the throat passes through the cover plate and is connected to the nozzle. The other end of the throat is used to connect the printing material. The extrusion structure is arranged in the cavity of the cover plate and is used to extrude the printing material in the throat to the nozzle. The heat sink is arranged on the throat, and the heater is located on the side of the throat facing the nozzle. The heat sink is used to dissipate heat for the printing material, and the heater is used to heat the printing material.

[0015] As an optional technical solution for the three-dimensional printing device, the extrusion structure includes an extrusion motor, a driving wheel and a driven wheel. The extrusion motor is installed on the cover plate, and the output end of the extrusion motor is connected to the driving wheel. The driving wheel and the driven wheel are both rotatably connected through the rotating shaft and the inner wall of the cover plate, and are respectively located on both sides of the throat. The driving wheel and the driven wheel cooperate with each other to extrude the printing material located in the throat.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a three-dimensional printing device, which comprises a support frame, a first adjustment mechanism, a second adjustment mechanism, a third adjustment mechanism, a material extrusion mechanism, a rotation mechanism and a printing support mechanism. Since the first adjustment mechanism can be adjusted in position along the first direction, the second adjustment member is adjustably arranged on the first adjustment member along the second direction, and the third adjustment member is adjustably arranged on the second adjustment member along the third direction, and the material extrusion mechanism is arranged on the third adjustment member at the same time, the first direction, the second direction and the third direction are perpendicular to each other, so that the material extrusion mechanism has three degrees of freedom; and the rotating mechanism is rotatably arranged on the support frame, and the printing support mechanism is rotatably arranged on the rotating mechanism, and the rotation axis of the rotating mechanism is perpendicular to the rotation axis of the printing support mechanism, so that the printing support mechanism has two directions of rotation. The above structural arrangement enables the three-dimensional printing device to have five degrees of freedom. When printing a workpiece, the rotating mechanism and the printing support mechanism can be used to rotate the printed workpiece, thereby offsetting the influence of gravity on the overhanging structure, thereby realizing unsupported three-dimensional printing. Compared with the method of using a six-axis robotic arm to achieve multi-degree-of-freedom unsupported printing, the three-dimensional printing device of the utility model has the advantages of large printing space and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a three-dimensional printing device in an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of a partial structure of a three-dimensional printing device in an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the rotating mechanism and the printing support mechanism in the embodiment of the utility model;

[0021] Figure 4 This is a structural schematic diagram of a material extrusion mechanism in an embodiment of the utility model;

[0022] Figure 5 It is a cross-sectional view of the material extrusion mechanism in the embodiment of the utility model.

[0023] In the figure:

[0024] 1. Support frame;

[0025] 2. first adjustment mechanism; 21. first adjustment member; 211. first adjustment block; 212. second adjustment block; 22. first adjustment structure; 221. first drive motor; 222. first screw rod; 223. first connecting seat; 23. second adjustment structure;

[0026] 3. Second adjustment mechanism; 31. Second adjustment member; 311. Third adjustment block; 312. Fourth adjustment block; 32. Third adjustment structure; 33. Fourth adjustment structure;

[0027] 4. third adjustment mechanism; 41. third adjustment member; 42. second drive motor; 43. second screw rod; 44. second connecting seat;

[0028] 5. Material extrusion mechanism; 51. Cover plate; 52. Throat; 53. Heat sink; 54. Heating element; 55. Extrusion structure; 551. Driving wheel; 552. Driven wheel; 56. Nozzle;

[0029] 6. Rotation mechanism; 61. Rotation seat; 62. First rotation structure; 621. First rotation motor; 622. First rotation disk;

[0030] 7. Printing support mechanism; 71. Printing frame; 72. Second rotating structure; 721. Connecting plate; 722. Second rotating motor; 723. Second rotating disk; 73. Printing table. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] like Figures 1 to 5As shown, this embodiment provides a three-dimensional printing device, which includes a support frame 1, a first adjustment mechanism 2, a second adjustment mechanism 3, a third adjustment mechanism 4, a material extrusion mechanism 5, a rotation mechanism 6 and a printing support mechanism 7. Since the first adjustment mechanism 2 can be adjusted in position along the first direction, the second adjustment member 31 is adjustably arranged on the first adjustment member 21 along the second direction, and the third adjustment member 41 is adjustably arranged on the second adjustment member 31 along the third direction, and the material extrusion mechanism 5 is arranged on the third adjustment member 41, and the first direction, the second direction and the third direction are perpendicular to each other. This arrangement enables the material extrusion mechanism 5 to have three degrees of freedom; and the rotating mechanism 6 is rotatably arranged on the support frame 1, and the printing support mechanism 7 is rotatably arranged on the rotating mechanism 6, and the rotation axis of the rotating mechanism 6 is perpendicular to the rotation axis of the printing support mechanism 7, which enables the printing support mechanism 7 to rotate in two directions. The above structural arrangement enables the three-dimensional printing device to have five degrees of freedom. When printing a workpiece, the rotating mechanism 6 and the printing support mechanism 7 can be used to rotate the printed workpiece, thereby offsetting the influence of gravity on the overhanging structure, thereby realizing unsupported three-dimensional printing. Compared with the method of using a six-axis robotic arm to achieve multi-degree-of-freedom unsupported printing, the three-dimensional printing device of the utility model has the advantages of large printing space and low cost.

[0036] Specifically, the rotating mechanism 6 includes a rotating seat 61 and a first rotating structure 62. The rotating seat 61 is arranged on the support frame 1 to play a supporting role; the first rotating structure 62 is rotatably arranged on the rotating seat 61, and the printing support mechanism 7 is arranged on the first rotating structure 62, so that the first rotating structure 62 can drive the printing support mechanism 7 to rotate.

[0037] Among them, in this embodiment, the first rotating structure 62 includes a first rotating motor 621 and a first rotating disk 622. The first rotating motor 621 is arranged on the rotating seat 61, and the output end of the first rotating motor 621 is drivingly connected to the first rotating disk 622, so that the first rotating motor 621 can drive the first rotating disk 622 to rotate; because the first rotating disk 622 is connected to the printing support mechanism 7, the first rotating disk 622 is used to drive the printing support mechanism 7 to rotate, thereby meeting the purpose of rotating the printing support mechanism 7.

[0038] Optionally, the rotating seat 61 includes a first seat body and a second seat body which are spaced apart from each other, the first seat body and the second seat body are both connected to the support frame 1 , and the first rotating motor 621 is disposed on the first seat body.

[0039] Optionally, the rotating seat 61 further includes a reinforcing plate, which is disposed between the first seat body and the second seat body to enhance the structural strength of the first seat body and the second seat body.

[0040] like Figure 1and Figure 3 As shown, in this embodiment, the printing support mechanism 7 includes a printing frame 71, a second rotating structure 72 and a printing table 73. The printing frame 71 is arranged on the rotating mechanism 6, and plays a role in supporting the second rotating structure 72 and the printing table 73; since the second rotating structure 72 is rotatably arranged on the printing frame 71, the printing table 73 can be driven to rotate by the second rotating structure 72. Among them, the rotation axis of the rotating mechanism 6 and the rotation axis of the printing support mechanism 7 are perpendicular, so that the printing table 73 has rotational freedom in two directions, so that when printing a workpiece, the rotating mechanism 6 and the printing support mechanism 7 can be used to rotate the printed workpiece in two degrees of freedom, thereby offsetting the influence of gravity on the overhanging structure, thereby realizing unsupported three-dimensional printing.

[0041] Specifically, one end of the printing frame 71 is connected to the first rotating disk 622, and the other end of the printing frame 71 is rotatably connected to the second base.

[0042] Further, the second rotating structure 72 includes a connecting plate 721, a second rotating motor 722, and a second rotating disk 723. The connecting plate 721 and the printing frame 71 are connected by fasteners, and the second rotating motor 722 is installed on the connecting plate 721, and the output end of the second rotating motor 722 is connected to the second rotating disk 723, so that the second rotating motor 722 can drive the second rotating disk 723 to rotate. Since the printing table 73 is connected to the second rotating disk 723, the purpose of the second rotating disk 723 driving the printing table 73 to rotate is achieved.

[0043] In this embodiment, the first adjustment mechanism 2 includes a first adjustment structure 22 and a second adjustment structure 23, and the first adjustment member 21 includes a first adjustment block 211 and a second adjustment block 212. The first adjustment structure 22 and the second adjustment structure 23 are respectively arranged at two ends of the bottom of the support frame 1, and the first adjustment structure 22 can drive the first adjustment block 211 to move along the first direction, and at the same time, the second adjustment structure 23 can drive the second adjustment block 212 to move along the first direction.

[0044] The first adjustment structure 22 includes a first drive motor 221, a first screw rod 222 and a first connection seat 223. In the first direction, the first drive motor 221 and the first connection seat 223 are respectively connected to the two ends of the bottom of the support frame 1. Specifically, the output end of the first drive motor 221 is connected to one end of the first screw rod 222, and the other end of the first screw rod 222 is rotatably connected to the first connection seat 223. The first adjustment block 211 is sleeved on the first screw rod 222 and threadedly matched with the first screw rod 222. In this way, when the first drive motor 221 drives the first screw rod 222 to rotate, the first screw rod 222 can drive the first adjustment block 211 to reciprocate along the first direction.

[0045] Optionally, the first adjustment structure 22 further includes a coupling and a reducer, the first drive motor 221 is connected to the reducer via the coupling, and the output end of the reducer is connected to the first screw rod 222 .

[0046] Similarly, the second adjustment mechanism 3 includes a third adjustment structure 32 and a fourth adjustment structure 33, the second adjustment member 31 includes a third adjustment block 311 and a fourth adjustment block 312, one end of the third adjustment structure 32 is connected to the first adjustment block 211, the other end of the third adjustment structure 32 is slidably connected to the top of the support frame 1, one end of the fourth adjustment structure 33 is connected to the second adjustment block 212, the other end of the fourth adjustment structure 33 is slidably connected to the top of the support frame 1, the third adjustment structure 32 can drive the third adjustment block 311 to move along the second direction, and the fourth adjustment structure 33 can drive the fourth adjustment block 312 to move along the second direction.

[0047] The structures of the third adjustment structure 32 and the fourth adjustment structure 33 are the same as that of the first adjustment structure 22 .

[0048] In this embodiment, the third adjustment mechanism 4 includes a second drive motor 42, a second screw rod 43, and a second connection seat 44. One of the second drive motor 42 and the second connection seat 44 can be connected to the third adjustment block 311, and the other can be connected to the fourth adjustment block 312, and the output end of the second drive motor 42 is connected to the second screw rod 43, and the third adjustment member 41 is sleeved on the second screw rod 43 and threadedly matched with the second screw rod 43, so that when the second drive motor 42 drives the second screw rod 43 to rotate, the second screw rod 43 can drive the third adjustment member 41 to move along the third direction.

[0049] Through the first adjustment mechanism 2 , the second adjustment mechanism 3 and the third adjustment mechanism 4 , the material extrusion mechanism 5 can realize movement in three directions of freedom, thereby meeting printing requirements.

[0050] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, the material extrusion mechanism 5 includes a cover plate 51, a throat 52, a heat sink 53, a heater 54, an extrusion structure 55 and a nozzle 56. The cover plate 51 is provided to be connected to the third adjustment member 41; one end of the throat 52 passes through the cover plate 51 and is connected to the nozzle 56, and the printing material can be connected through the other end of the throat 52; at the same time, the extrusion structure 55 is provided in the cavity of the cover plate 51, and the printing material in the throat 52 can be extruded to the nozzle 56 by the extrusion structure 55; the heat sink 53 is provided on the throat 52, and the printing material can be dissipated; at the same time, the heater 54 is provided on the side of the throat 52 facing the nozzle 56, so that the printing material can be heated into a molten state and ejected by the nozzle 56, so that the workpiece can be printed.

[0051] The extrusion structure 55 includes an extrusion motor, a driving wheel 551 and a driven wheel 552. Since the output end of the extrusion motor is connected to the driving wheel 551, and the driving wheel 551 and the driven wheel 552 are rotatably connected through the rotating shaft and the inner wall of the cover plate 51, and are respectively located on both sides of the throat 52, the printing material located in the throat 52 can be extruded through the cooperation between the driving wheel 551 and the driven wheel 552.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A three-dimensional printing device, characterized in that: include: Support frame (1); A first adjustment mechanism (2) comprising a first adjustment member (21), wherein the first adjustment member (21) is arranged on the support frame (1) in an adjustable manner along a first direction; A second adjustment mechanism (3) comprising a second adjustment member (31), wherein the second adjustment member (31) is arranged on the first adjustment member (21) in a positionally adjustable manner along a second direction; A third adjustment mechanism (4), comprising a third adjustment member (41), wherein the third adjustment member (41) is adjustably arranged on the second adjustment member (31) along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other; A material extrusion mechanism (5), arranged on the third adjustment member (41), the material extrusion mechanism (5) being used for extruding printing material; A rotating mechanism (6) rotatably arranged on the supporting frame (1); The printing support mechanism (7) is rotatably arranged on the rotating mechanism (6), the rotating axis of the rotating mechanism (6) is perpendicular to the rotating axis of the printing support mechanism (7), and the printing support mechanism (7) is used to support the printing material extruded by the material extrusion mechanism (5).

2. The three-dimensional printing device according to claim 1, characterized in that: The rotating mechanism (6) comprises a rotating seat (61) and a first rotating structure (62); the rotating seat (61) is arranged on the support frame (1); the first rotating structure (62) is rotatably arranged on the rotating seat (61); and the printing support mechanism (7) is arranged on the first rotating structure (62).

3. The three-dimensional printing device according to claim 2, characterized in that: The first rotating structure (62) includes a first rotating motor (621) and a first rotating disk (622). The first rotating motor (621) is arranged on the rotating seat (61). The output end of the first rotating motor (621) is drivingly connected to the first rotating disk (622). The first rotating disk (622) is connected to the printing support mechanism (7). The first rotating motor (621) drives the first rotating disk (622) to rotate, and the first rotating disk (622) drives the printing support mechanism (7) to rotate.

4. The three-dimensional printing device according to claim 1, characterized in that: The printing support mechanism (7) comprises a printing frame (71), a second rotating structure (72) and a printing platform (73); the printing frame (71) is arranged on the rotating mechanism (6); the second rotating structure (72) is rotatably arranged on the printing frame (71); and the printing platform (73) is arranged on the second rotating structure (72).

5. The three-dimensional printing device according to claim 4, characterized in that: The second rotating structure (72) comprises a connecting plate (721), a second rotating motor (722) and a second rotating disk (723); the connecting plate (721) is connected to the printing frame (71); the second rotating motor (722) is installed on the connecting plate (721); the output end of the second rotating motor (722) is connected to the second rotating disk (723); the printing table (73) is connected to the second rotating disk (723); the second rotating motor (722) drives the second rotating disk (723) to rotate; and the second rotating disk (723) drives the printing table (73) to rotate.

6. The three-dimensional printing device according to claim 1, characterized in that: The first adjustment mechanism (2) comprises a first adjustment structure (22) and a second adjustment structure (23); the first adjustment member (21) comprises a first adjustment block (211) and a second adjustment block (212); the first adjustment structure (22) and the second adjustment structure (23) are respectively arranged at two ends of the bottom of the support frame (1); the first adjustment structure (22) can drive the first adjustment block (211) to move along the first direction; and the second adjustment structure (23) can drive the second adjustment block (212) to move along the first direction.

7. The three-dimensional printing device according to claim 6, characterized in that: The first adjustment structure (22) comprises a first drive motor (221), a first screw rod (222) and a first connecting seat (223); along the first direction, the first drive motor (221) and the first connecting seat (223) are respectively connected to the two ends of the bottom of the support frame (1); the output end of the first drive motor (221) is connected to one end of the first screw rod (222); the other end of the first screw rod (222) is rotatably connected to the first connecting seat (223); the first adjustment block (211) is sleeved on the first screw rod (222) and is threadedly matched with the first screw rod (222); the first drive motor (221) drives the first screw rod (222) to rotate, and the first screw rod (222) drives the first adjustment block (211) to move along the first direction.

8. The three-dimensional printing device according to claim 6, characterized in that: The second adjustment mechanism (3) comprises a third adjustment structure (32) and a fourth adjustment structure (33); the second adjustment member (31) comprises a third adjustment block (311) and a fourth adjustment block (312); one end of the third adjustment structure (32) is connected to the first adjustment block (211), and the other end of the third adjustment structure (32) is slidably connected to the top of the support frame (1); one end of the fourth adjustment structure (33) is connected to the second adjustment block (212), and the other end of the fourth adjustment structure (33) is slidably connected to the top of the support frame (1); the third adjustment structure (32) can drive the third adjustment block (311) to move along the second direction, and the fourth adjustment structure (33) can drive the fourth adjustment block (312) to move along the second direction.

9. The three-dimensional printing device according to claim 8, characterized in that: The third adjustment mechanism (4) comprises a second drive motor (42), a second screw rod (43) and a second connecting seat (44); one of the second drive motor (42) and the second connecting seat (44) is connected to the third adjustment block (311), and the other is connected to the fourth adjustment block (312); the output end of the second drive motor (42) is connected to the second screw rod (43); the third adjustment member (41) is sleeved on the second screw rod (43) and threadedly matched with the second screw rod (43); the second drive motor (42) drives the second screw rod (43) to rotate, and the second screw rod (43) drives the third adjustment member (41) to move along the third direction.

10. The three-dimensional printing device according to claim 1, characterized in that: The material extrusion mechanism (5) comprises a cover plate (51), a throat (52), a heat sink (53), a heating element (54), an extrusion structure (55) and a nozzle (56); the cover plate (51) is connected to the third adjustment element (41); one end of the throat (52) passes through the cover plate (51) and is connected to the nozzle (56); the other end of the throat (52) is used to connect the printing material; the extrusion structure (55) is arranged in the cavity of the cover plate (51) and is used to extrude the printing material in the throat (52) to the nozzle (56); the heat sink (53) is arranged on the throat (52); the heating element (54) is located on the side of the throat (52) facing the nozzle (56); the heat sink (53) is used to dissipate heat for the printing material; and the heating element (54) is used to heat the printing material.

11. The three-dimensional printing device according to claim 10, characterized in that: The extrusion structure (55) comprises an extrusion motor, a driving wheel (551) and a driven wheel (552); the extrusion motor is mounted on the cover plate (51); the output end of the extrusion motor is connected to the driving wheel (551); the driving wheel (551) and the driven wheel (552) are both rotatably connected via a rotating shaft and the inner wall of the cover plate (51), and are respectively located on both sides of the throat (52); the driving wheel (551) and the driven wheel (552) cooperate with each other to extrude the printing material located in the throat (52).

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