Portable 3D printer

Abstract

The invention discloses a portable 3D printer, and relates to the technical field of 3D printers. The portable 3D printer comprises a printer case, pulleys are fixedly connected to the bottom of the printer case, a pull rod is movably connected to the top of the printer case, and a printing driving mechanism is fixedly connected to the interior of the printer case. According to the portable 3D printer, a fourth motor and a third motor are arranged for cooperative control, tedious manual operation is not needed, use is more convenient, adjustment is easier, practicability is high, the use convenience is improved, a sixth gear is arranged, and a fifth motor is started to drive the sixth gear to rotate, so that the sixth gear conveniently drives the supporting platform to move, and the practicability of the printer is improved. The 3D printer is light and compact in structure, high in mechanical efficiency, low in energy consumption and stable and reliable in work, avoids the situation that too many complex debugging operations are needed when a person uses the 3D printer for printing, and is convenient for the person to use.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and particularly to a portable 3D printer. Background Art

[0002] A 3D printer is a device applying rapid prototyping technology. Based on a digital model file, it uses bondable materials such as powdered metal or plastic, and constructs an object by layer-by-layer printing. It can construct structures that are very difficult or even impossible to process by traditional material removal processing technologies. Combined with Internet technology, it realizes the electronic transmission of objects in a sense, and is an extremely important processing device.

[0003] Referring to the invention patent with the Chinese publication number "CN105216307A", it includes a 3D printer body. The front panel is partially hollowed out. On the bottom panel, a left pulley bracket and a right pulley bracket are fixedly provided. On the left pulley bracket, a first guide rail pulley and a first quick clamp are provided. On the right pulley bracket, a second guide rail pulley and a second quick clamp are provided. It further includes a bottom support plate. On the top surface of the bottom support plate, a left guide rail, a left guide rail folding part, a right guide rail and a right guide rail folding part are provided. The left guide rail slides on the first guide rail pulley, and the right guide rail slides on the second guide rail pulley. When the bottom support plate is pulled outwards, the left guide rail and the left guide rail folding part fold with each other, and the right guide rail and the right guide rail folding part fold with each other. The bottom support plate covers the hollow part of the front panel. When not in use, the left guide rail folding part and the right guide rail folding part are folded, and the bottom support plate covers the hollow part of the front panel, becoming a part of the front panel. After folding, the volume is greatly reduced, which is convenient for carrying and saves space.

[0004] 3D printers are mainly applied in professional and industrial fields and are difficult to be popularized to families and individuals. Although there are already portable 3D printers, the existing portable 3D printers have problems such as unstable operation due to low structural strength and inconvenient adjustment, thus affecting personal use. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a portable 3D printer to solve the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A portable 3D printer, including a printer chassis, a pulley is fixedly connected to the bottom of the printer chassis, a pull rod is movably connected to the top of the printer chassis, a printing drive mechanism is fixedly connected to the inside of the printer chassis, a heat dissipation mechanism is fixedly connected to the surface of the printer chassis, a processing platform drive mechanism is rotatably connected to the inside of the printer chassis, the processing platform drive mechanism includes a rotating rod, the rotating rod is rotatably connected to the inside of the printer chassis, a first fixing block is fixedly connected to the surface of the rotating rod, a support platform is slidably connected to the inside of the first fixing block, an electric push rod is fixedly connected to the inside of the printer chassis, and a back plate is fixedly connected to the surface of the electric push rod; The printing drive mechanism includes: A first lead screw, the first lead screw is rotatably connected inside the printer chassis; A first slider, the first slider is slidably connected to the surface of the first lead screw, a rack is fixedly connected to the inside of the first slider, a nozzle fixing block is slidably connected to the surface of the rack, a second motor is fixedly connected to the inside of the nozzle fixing block, and a third gear is fixedly connected to the inside of the second motor through an output shaft, and the third gear is meshed with the rack.

[0007] Preferably, the printing drive mechanism further includes a first motor, the first motor is fixedly connected to the inside of the printer chassis, a first lead screw is rotatably connected to the inside of the first motor, and the number of the first lead screws is two.

[0008] Preferably, a first gear is fixedly connected to the surface of the first lead screw, a first gear belt is meshed with the surface of the first gear, the first gear belt is meshed with a second gear, and a first slide bar is slidably connected to the surface of the first slider, and the first slide bar is fixedly connected to the inside of the printer chassis.

[0009] Preferably, a second slide bar is also fixedly connected to the surface of the first slider, the nozzle fixing block is slidably connected to the surface of the second slide bar, a printing coil is fixedly connected to the top of the nozzle fixing block, and a printer nozzle is fixedly connected to the surface of the nozzle fixing block.

[0010] Preferably, the heat dissipation mechanism includes a first fan blade, the first fan blade is fixedly connected to the surface of the nozzle fixing block, and the first fan blade is arranged on the back of the printer nozzle, a second fan blade is also fixedly connected to the surface of the printer chassis, and a filter plate is fixedly connected to the surface of the second fan blade.

[0011] Preferably, the processing platform driving mechanism includes a third motor, the third motor is fixedly connected inside the printer chassis, the number of the third motors is two, a fourth gear is fixedly connected to the inside of the third motor through an output shaft, the fourth gear is meshed with a fifth gear, a second lead screw is fixedly connected to the axis of the fifth gear, the second lead screw is rotatably connected inside the printer chassis, a second slider is slidably connected to the surface of the second lead screw, and a threaded groove is formed inside the second slider.

[0012] Preferably, a fourth motor is fixedly connected inside the second slider, a rotating rod is rotatably connected inside the fourth motor, a fifth motor is fixedly connected inside the first fixing block, a sixth gear is fixedly connected to the inside of the fifth motor through an output shaft, and the sixth gear is meshed with the support platform.

[0013] Preferably, a sixth motor is fixedly connected to the surface of the support platform, a third lead screw is rotatably connected inside the sixth motor, a second fixing block is slidably connected to the surface of the third lead screw, and a processing platform is fixedly connected to the top of the second fixing block.

[0014] The present invention provides a portable 3D printer. It has the following beneficial effects: 1. For this portable 3D printer, by setting the pulley and the pull rod, the 3D printer is made more convenient and easier to move. Compared with the traditional handling method, the handling difficulty and physical consumption are greatly reduced. It avoids taking up too much space or causing inconvenience due to its special shape. It has a coordinated and beautiful appearance and a wide range of applicable people, greatly improving the convenience and flexibility of personal use of 3D printers.

[0015] 2. For this portable 3D printer, by setting two first lead screws, starting the first motor drives the first gear to rotate, and finally drives the first lead screw to rotate together through the meshing transmission of the gears, thereby enhancing the stability of the movement of the first slider on its surface, improving the accuracy of the printer, and avoiding the need for too many complex debugging operations when an individual uses printing. Moreover, it has a compact structure, is convenient for processing and manufacturing, is small in size, has high moving accuracy in all directions, strong practicability, good use effect, is convenient for popularization and use, improves the convenience and flexibility of personal use of 3D printers, and sets the third gear to be meshed with the rack for transmission. After starting the second motor, it directly drives the third gear to rotate, and controls the printing through gear transmission. Compared with the traditional toothed belt meshing transmission, the gear meshing transmission can better ensure the high precision of the moving position of the printer nozzle.

[0016] 3. The portable 3D printer prevents the printer nozzle from deforming or being damaged due to thermal expansion and contraction by setting the first fan blade, ensuring the wire feeding accuracy and stability of the nozzle, thereby avoiding the need for overly complex debugging operations when an individual uses the printer, facilitating the use by the individual. Moreover, by setting the second fan blade, compared with traditional portable 3D printers after use, this portable 3D printer controls the start of the second fan blade after use. Even if it is directly stored in the box after use, it does not affect its heat dissipation, avoiding the influence of excessive temperature on the use of the printer, making it more convenient to use, easier to adjust, and improving the convenience of use.

[0017] 4. The portable 3D printer is controlled by the cooperation of the fourth motor and the third motor, eliminating the need for cumbersome manual operations, making it more convenient to use, easier to adjust, with strong practicability, improving the convenience of use. And by setting the sixth gear, when the fifth motor is started, it drives the sixth gear to rotate, thus facilitating the sixth gear to drive the support platform to move, and then facilitating the adjustment of the position of the processing platform. Its structure is light and compact, with high mechanical efficiency, low energy consumption, and stable and reliable operation, avoiding the need for overly complex debugging operations when an individual uses the printer, facilitating the use by the individual. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view three-dimensional structure schematic diagram when the printer of the present invention is working; Figure 2 It is a front view three-dimensional structure schematic diagram when the present invention is stored; Figure 3 It is a sectional view schematic diagram of the printer of the present invention; Figure 4 It is a schematic diagram of a part of the printing drive mechanism of the present invention; Figure 5 For the present invention Figure 4 The enlarged schematic diagram at A in; Figure 6 It is a schematic diagram of the first part of the processing platform drive mechanism of the present invention; Figure 7 For the present invention Figure 5 The enlarged schematic diagram at B in; Figure 8 It is a schematic diagram of the second part of the processing platform drive mechanism of the present invention; Figure 9 For the present invention Figure 8 The enlarged schematic diagram at C in.

[0019] In the figure: 1. Printer chassis; 2. Pulley; 3. Pull rod; 4. Support platform; 5. Printing drive mechanism; 51. First motor; 52. First lead screw; 53. First gear belt; 54. First gear; 55. Second gear; 56. First slider; 57. First slide bar; 58. Second slide bar; 59. Rack; 510. Printer nozzle; 511. Nozzle fixing block; 512. Second motor; 513. Third gear; 514. Printing roll; 6. Heat dissipation mechanism; 61. First fan blade; 62. Second fan blade; 63. Filter plate; 7. Back plate; 8. Processing platform drive mechanism; 81. Third motor; 82. Fourth gear; 83. Fifth gear; 84. Second lead screw; 85. Second slider; 86. Thread groove; 87. Fourth motor; 88. Rotating rod; 89. First fixing block; 810. Fifth motor; 811. Sixth gear; 812. Sixth motor; 813. Third lead screw; 814. Processing platform; 815. Second fixing block; 9. Electric push rod. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0022] Embodiment 1: Please refer to Figures 1-5 , the present invention provides a technical solution: a portable 3D printer, including a printer chassis 1, a pulley 2 is fixedly connected to the bottom of the printer chassis 1, a pull rod 3 is movably connected to the top of the printer chassis 1, a printing drive mechanism 5 is fixedly connected to the inside of the printer chassis 1, a heat dissipation mechanism 6 is fixedly connected to the surface of the printer chassis 1, a processing platform drive mechanism 8 is rotatably connected to the inside of the printer chassis 1, and the processing platform drive mechanism 8 includes a rotating rod 88, the rotating rod 88 is rotatably connected to the inside of the printer chassis 1, a first fixing block 89 is fixedly connected to the surface of the rotating rod 88, a support platform 4 is slidably connected to the inside of the first fixing block 89, an electric push rod 9 is fixedly connected to the inside of the printer chassis 1, and a back plate 7 is fixedly connected to the surface of the electric push rod 9; The printing drive mechanism 5 includes: A first lead screw 52, the first lead screw 52 is rotatably connected to the inside of the printer chassis 1; The first slider 56 is slidably connected to the surface of the first lead screw 52. A rack 59 is fixedly connected inside the first slider 56. A nozzle fixing block 511 is slidably connected to the surface of the rack 59. A second motor 512 is fixedly connected inside the nozzle fixing block 511. A third gear 513 is fixedly connected to the second motor 512 through an output shaft, and the third gear 513 is meshed with the rack 59.

[0023] The printing drive mechanism 5 further includes a first motor 51. The first motor 51 is fixedly connected inside the printer chassis 1. A first lead screw 52 is rotatably connected inside the first motor 51, and the number of the first lead screws 52 is two.

[0024] A first gear 54 is fixedly connected to the surface of the first lead screw 52. A first gear belt 53 is meshed with the surface of the first gear 54. The first gear belt 53 is meshed with a second gear 55. A first slide bar 57 is slidably connected to the surface of the first slider 56, and the first slide bar 57 is fixedly connected inside the printer chassis 1.

[0025] A second slide bar 58 is also fixedly connected to the surface of the first slider 56. The nozzle fixing block 511 is slidably connected to the surface of the second slide bar 58. A printing coil 514 is fixedly connected to the top of the nozzle fixing block 511. A printer nozzle 510 is fixedly connected to the surface of the nozzle fixing block 511.

[0026] The heat dissipation mechanism 6 includes a first fan blade 61. The first fan blade 61 is fixedly connected to the surface of the nozzle fixing block 511, and the first fan blade 61 is arranged on the back of the printer nozzle 510. A second fan blade 62 is also fixedly connected to the surface of the printer chassis 1, and a filter plate 63 is fixedly connected to the surface of the second fan blade 62.

[0027] When printing is required, first tighten the pull rod 3 and then place one side of the pull rod 3 upside down on the ground. Secondly, adjust the position of the printer nozzle 510. Start the first motor 51. The start of the first motor 51 drives the first lead screw 52 to rotate. The rotation of the first lead screw 52 drives the first gear 54 fixed on its surface to rotate. The rotation of the first gear 54 drives the first gear belt 53 engaged with it to rotate together. The rotation of the first gear belt 53 drives the second gear 55 to rotate together. The rotation of the second gear 55 drives the first lead screws 52 on both sides to rotate together, so that the first sliders 56 on both sides slide on the surface of the first lead screw 52, thereby enhancing the stability of the movement of the first slider 56 on its surface, improving the accuracy of the printer, avoiding the need for too many complex debugging operations when an individual uses printing, and controlling the position of the printer nozzle 510 in the Z-axis direction. Subsequently, start the second motor 512. The start of the second motor 512 drives the third gear 513 to rotate through the output shaft, so that the nozzle fixing block 511 slides on the surface of the second slide bar 58, thereby controlling the position of the printer nozzle 510 in the X-axis direction. At the same time, control the start of the first fan blade 61 to continuously dissipate heat from the printer nozzle 510, preventing the printer nozzle 510 from deforming or being damaged due to thermal expansion and contraction, ensuring the wire feeding accuracy and stability of the nozzle, and avoiding the need for too many complex debugging operations when an individual uses printing.

[0028] By setting the pulley 2 and the pull rod 3, the 3D printer is made more convenient and easier to move. Compared with traditional handling methods, this greatly reduces the handling difficulty and physical exertion, avoids occupying too much space or causing inconvenience due to special shapes, has a coordinated and beautiful appearance, a large range of applicable people, and greatly improves the convenience and flexibility of personal use of the 3D printer.

[0029] By setting two first lead screws 52, the start of the first motor 51 drives the first gear 54 to rotate, and finally drives the first lead screw 52 to rotate together through the meshing transmission of the gears, thereby enhancing the stability of the movement of the first slider 56 on its surface, improving the accuracy of the printer, avoiding the need for too many complex debugging operations when an individual uses printing, and having a compact structure, being convenient for processing and manufacturing, having a small volume, high moving accuracy in all directions, strong practicability, good use effect, being convenient for popularization and use, improving the convenience and flexibility of personal use of the 3D printer, and setting the third gear 513 to mesh with the rack 59 for transmission. By directly driving the third gear 513 to rotate after starting the second motor 512, printing is controlled through gear transmission. Compared with the traditional toothed belt meshing transmission, the gear meshing transmission can better ensure the high accuracy of the moving position of the printer nozzle 510.

[0030] By setting the first fan blade 61, it is possible to prevent the printer nozzle 510 from being deformed or damaged due to thermal expansion and contraction, ensure the wire feeding accuracy and stability of the nozzle, thereby avoiding the need for too many complex debugging operations when an individual uses the printer, facilitating the use of the individual. And by setting the second fan blade 62, compared with the traditional portable 3D printer after use, when this portable 3D printer finishes use, by controlling the second fan blade 62 to start, even if it is directly stored in the box after use, it does not affect its heat dissipation, avoiding the influence of too high temperature on the use of the printer, making it more convenient to use, easier to adjust, and improving the convenience of use.

[0031] Embodiment 2: Please refer to Figures 1-9 , based on Embodiment 1, the present invention provides a technical solution: The processing platform driving mechanism 8 includes a third motor 81, the third motor 81 is fixedly connected inside the printer chassis 1, the number of the third motors 81 is two, a fourth gear 82 is fixedly connected inside the third motor 81 through an output shaft, the fourth gear 82 is meshed with a fifth gear 83, a second lead screw 84 is fixedly connected to the axis center of the fifth gear 83, the second lead screw 84 is rotatably connected inside the printer chassis 1, a second slider 85 is slidably connected to the surface of the second lead screw 84, and a thread groove 86 is formed inside the second slider 85.

[0032] A fourth motor 87 is fixedly connected inside the second slider 85, a rotating rod 88 is rotatably connected inside the fourth motor 87, a fifth motor 810 is fixedly connected inside the first fixing block 89, a sixth gear 811 is fixedly connected inside the fifth motor 810 through an output shaft, and the sixth gear 811 is meshed with the support platform 4.

[0033] A sixth motor 812 is fixedly connected to the surface of the support platform 4, a third lead screw 813 is rotatably connected inside the sixth motor 812, a second fixing block 815 is slidably connected to the surface of the third lead screw 813, and a processing platform 814 is fixedly connected to the top of the second fixing block 815.

[0034] When printing is required, the third motor 81 is then started. The start of the third motor 81 drives the fourth gear 82 to rotate through the output shaft. The rotation of the fourth gear 82 drives the fifth gear 83 meshing with it to rotate. The rotation of the fifth gear 83 drives the second lead screw 84 to rotate. The rotation of the second lead screw 84 drives the second slider 85 to move towards the direction close to the back plate 7. Then the fourth motor 87 is started. The start of the fourth motor 87 drives the rotating rod 88 to rotate. The rotation of the rotating rod 88 drives the first fixing block 89 to rotate counterclockwise, so as to flatten the support platform 4. Then the fifth motor 810 is started. The start of the fifth motor 810 drives the sixth gear 811 to rotate through the output shaft. The rotation of the sixth gear 811 drives the support platform 4 to move towards the direction where the printer nozzle 510 is located. Then the sixth motor 812 is started. The start of the sixth motor 812 drives the third lead screw 813 to rotate. The rotation of the third lead screw 813 drives the second fixing block 815 to move. The movement of the second fixing block 815 drives the processing platform 814 to slide on the top of the support platform 4 through the slide bar, so as to adjust the Y-axis direction of the processing platform 814. Its structure is light and compact, with high mechanical efficiency, low energy consumption, stable and reliable operation, avoiding too many complex debugging operations when an individual uses printing. At the same time, by controlling the start of the electric push rod 9, the back plate 7 is moved to a position away from the printer chassis 1.

[0035] When carrying is required, by controlling the start of the third motor 81 to drive the fourth gear 82 to rotate. The rotation of the fourth gear 82 drives the fifth gear 83 meshing with it to rotate. The rotation of the fifth gear 83 drives the second lead screw 84 to rotate. The rotation of the second lead screw 84 drives the second slider 85 to move towards the direction away from the back plate 7. Then the fourth motor 87 is started. The start of the fourth motor 87 drives the rotating rod 88 to rotate. The rotation of the rotating rod 88 drives the first fixing block 89 to rotate clockwise, so as to drive the support platform 4 to rotate clockwise together. At the same time, by controlling the start of the electric push rod 9, the back plate 7 is moved to a position close to the printer chassis 1, so that the printer is stored in the printer chassis 1. Then, by controlling the start of the second fan blade 62 to rotate, even if it is directly stored in the box after use, it does not affect its heat dissipation, avoiding the influence of too high temperature on the use of the printer, making it more convenient to use, easier to adjust, and improving the convenience of use.

[0036] By setting the cooperation control of the fourth motor 87 and the third motor 81, there is no need for manual cumbersome operations, making it more convenient to use, easier to adjust, with strong practicability, improving the convenience of use. And by setting the sixth gear 811, after starting the fifth motor 810, it drives the sixth gear 811 to rotate, so as to conveniently drive the support platform 4 to move, thus conveniently adjusting the position of the processing platform 814. Its structure is light and compact, with high mechanical efficiency, low energy consumption, stable and reliable operation, avoiding too many complex debugging operations when an individual uses printing, and facilitating the use of individuals.

[0037] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A portable 3D printer, comprising a printer case (1), characterized in that: The bottom of the printer case (1) is fixedly connected to a pulley (2), the top of the printer case (1) is movably connected to a pull rod (3), the interior of the printer case (1) is fixedly connected to a printing drive mechanism (5), the surface of the printer case (1) is fixedly connected to a heat dissipation mechanism (6), the interior of the printer case (1) is rotatably connected to a processing platform drive mechanism (8), the processing platform drive mechanism (8) comprises a rotating rod (88), the rotating rod (88) is rotatably connected to the interior of the printer case (1), the surface of the rotating rod (88) is fixedly connected to a first fixed block (89), the interior of the first fixed block (89) is slidably connected to a support platform (4), the interior of the printer case (1) is fixedly connected to an electric push rod (9), and the surface of the electric push rod (9) is fixedly connected to a back plate (7); The printing drive mechanism (5) comprises: A first lead screw (52), the first lead screw (52) being rotatably connected inside the printer housing (1); A first slider (56), the first slider (56) is slidably connected to the surface of the first lead screw (52), a rack (59) is fixedly connected inside the first slider (56), a nozzle fixing block (511) is slidably connected to the surface of the rack (59), a second motor (512) is fixedly connected inside the nozzle fixing block (511), a third gear (513) is fixedly connected inside the second motor (512) via an output shaft, and the third gear (513) is meshingly connected to the rack (59).

2. A portable 3D printer according to claim 1, characterized in that: The printing drive mechanism (5) further comprises a first motor (51), wherein the first motor (51) is fixedly connected to the inside of the printer housing (1), and a first lead screw (52) is rotatably connected to the inside of the first motor (51), and there are two first lead screws (52).

3. A portable 3D printer according to claim 2, characterized in that: The surface of the first lead screw (52) is fixedly connected to a first gear (54), the surface of the first gear (54) is meshingly connected to a first gear belt (53), the first gear belt (53) is meshingly connected to a second gear (55), the surface of the first slider (56) is slidably connected to a first slide bar (57), and the first slide bar (57) is fixedly connected to the inside of the printer chassis (1).

4. A portable 3D printer according to claim 3, characterized in that: The surface of the first sliding block (56) is also fixedly connected to a second sliding bar (58), the nozzle fixing block (511) is slidably connected to the surface of the second sliding bar (58), the top of the nozzle fixing block (511) is fixedly connected to a printing coil (514), and the surface of the nozzle fixing block (511) is fixedly connected to a printer nozzle (510).

5. A portable 3D printer according to claim 4, characterized in that: The heat dissipation mechanism (6) comprises a first fan blade (61), the first fan blade (61) being fixedly connected to the surface of the nozzle fixing block (511), and the first fan blade (61) being arranged on the back side of the printer nozzle (510), the surface of the printer case (1) being further fixedly connected to a second fan blade (62), and the surface of the second fan blade (62) being fixedly connected to a filter plate (63).

6. A portable 3D printer according to claim 5, characterized in that: The processing platform driving mechanism (8) comprises a third motor (81), the third motor (81) being fixedly connected to the inside of the printer case (1), the number of the third motors (81) being two, the inside of the third motor (81) being fixedly connected to a fourth gear (82) via an output shaft, the fourth gear (82) being meshingly connected to a fifth gear (83), the axis of the fifth gear (83) being fixedly connected to a second lead screw (84), the second lead screw (84) being rotatably connected to the inside of the printer case (1), the surface of the second lead screw (84) being slidably connected to a second slider (85), the inside of the second slider (85) being provided with a threaded groove (86).

7. A portable 3D printer according to claim 6, characterized in that: A fourth motor (87) is fixedly connected to the interior of the second sliding block (85); the rotating rod (88) is rotatably connected to the interior of the fourth motor (87); a fifth motor (810) is fixedly connected to the interior of the first fixed block (89); a sixth gear (811) is fixedly connected to the interior of the fifth motor (810) via an output shaft; and the sixth gear (811) is meshingly connected to the support platform (4).

8. A portable 3D printer according to claim 7, characterized in that: A sixth motor (812) is fixedly connected to the surface of the support platform (4); a third lead screw (813) is rotatably connected inside the sixth motor (812); a second fixed block (815) is slidably connected to the surface of the third lead screw (813); and a processing platform (814) is fixedly connected to the top of the second fixed block (815).

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