3D printing multi-consumable conveying structure and 3D printer

Abstract

The utility model relates to the technical field of 3D printing, and particularly discloses a 3D printing multi-consumable conveying structure and a 3D printer. And the transportation structure comprises a movable block and three groups of transportation mechanisms. When the movable block is placed in the posture of being installed on a horizontal transverse conveying mechanism of the 3D printer, the middle conveying mechanism is located at different heights relative to the two conveying mechanisms on the two sides, the three conveying mechanisms are completely separated, and the middle conveying mechanism and any other conveying mechanism are staggered in the vertical direction; and the total width of the three conveying mechanisms is smaller than the sum of the respective widths of the three conveying mechanisms. The three groups of conveying mechanisms are compactly arranged in multiple rows, so that the space among the three consumables is reduced, when the three consumables are concentrated in the smaller bunching mechanism below, the bending degree of the three consumables is smaller, the process of pushing the consumables to penetrate through the bunching pipe and other channels by the conveying mechanisms is smoother, and the nozzle is smooth in discharging, uniform in discharging amount and good in printing quality.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and in particular to a 3D printing multi-consumable material transportation structure and a 3D printer. Background Art

[0002] 3D printing is a method of manufacturing physical objects by accumulating materials layer by layer. Fused deposition modeling (FDM) is a 3D printing technology that can print in multiple materials and colors. FDM uses polymers as the main material, melts and extrude thermoplastic filaments (consumables) by heating, and constructs parts that are accumulated layer by layer from bottom to top by mechanical movement. In the multi-color printing process, multiple color consumables are required. In order to transport each consumable to the nozzle, multiple mechanisms for transporting consumables are designed. However, since the consumables are flexible and linear, although multiple Teflon tubes are set in the section from the transport mechanism to the nozzle to limit multiple consumables, the multiple transport mechanisms are arranged in a row, occupying a large space, which will cause the Teflon tube and consumables to bend at a large angle, and make the consumables not smooth when passing through the Teflon tube and other channels, resulting in poor nozzle discharge and uneven discharge, thus affecting the quality of the printed objects. Utility Model Content

[0003] In view of the fact that during multi-color printing, multiple transport mechanisms are arranged in a row, occupying a large space, which will cause the Teflon tube and consumables to bend at a large angle, and make the consumables not smooth when passing through the Teflon tube and other channels, resulting in poor nozzle discharge and uneven discharge, thus affecting the quality of the printed objects. This application proposes a 3D printing multi-consumable transport structure and a 3D printer to improve this situation.

[0004] In a first aspect, the present application proposes a 3D printing multi-consumable material transportation structure and adopts the following technical solution.

[0005] A 3D printing multi-consumable material transport structure comprises a movable block and three groups of transport mechanisms. The movable block has a fixing mechanism for connecting to a horizontal transverse transport mechanism of a 3D printer. Each group of the transport mechanisms is used to push a consumable material. When the movable block is placed in a posture of being installed on the horizontal transverse transport mechanism of the 3D printer, the middle transport mechanism is at a different height relative to the two transport mechanisms on both sides, and the three transport mechanisms are completely separated, and the middle transport mechanism and any other transport mechanism are staggered in the vertical direction, so that the total width of the three groups of transport mechanisms is less than the sum of the widths of the three groups of transport mechanisms.

[0006] By adopting the above technical scheme, the three groups of transport mechanisms are divided into multiple rows and compactly arranged, so that the spacing between the three consumables becomes smaller. When the three consumables are concentrated in the smaller wire harness mechanism (heat dissipation pipe) below, the bending degree of the three consumables is smaller. A wire harness tube (Teflon tube) is also connected between each group of transport mechanisms and the wire harness mechanism. The wire harness tube is sleeved on the outside of the consumables to limit and protect the consumables to prevent excessive bending or friction damage of the consumables. After the above settings, the bending degree of the wire harness tube can also be set to be smaller, and the process of the transport mechanism pushing the consumables through the wire harness tube and other channels is relatively smooth, so the nozzle discharges smoothly, the discharge amount is uniform, and the printing quality is good.

[0007] An improvement of the 3D printing multi-filament transport structure is that the three sets of transport mechanisms have the same structure and size. The two transport mechanisms on both sides are at the same height, and the distance between the two transport mechanisms on both sides is 1.1 to 5 times the diameter of the filament.

[0008] By adopting the above technical solution, the distance between the two transport mechanisms on both sides is small, which is sufficient for the consumables of the middle transport mechanism to pass through. The three transport mechanisms are arranged relatively compactly with each other, reducing the bending degree of the consumables in the lower mechanism and improving the uniformity of material discharge.

[0009] An improvement of the 3D printing multi-consumable material transportation structure is that the three groups of transportation mechanisms are in the same plane.

[0010] By adopting the above technical solution, three groups of consumable line sources are installed above the three groups of transport mechanisms. The three groups of consumable line sources can be installed coaxially, which improves the installation convenience, and the three consumables can smoothly enter the three groups of transport mechanisms.

[0011] An improvement of the 3D printing multi-consumables transport structure is that the fixing mechanism is arranged on the back of the movable block. The three groups of transport mechanisms are all installed on the front of the movable block.

[0012] By adopting the above technical solution, the three groups of transport mechanisms and consumables will not interfere with the horizontal lateral transport mechanism of the 3D printer, and the consumables can move smoothly.

[0013] An improvement of the 3D printing multi-consumables transport structure is that each group of the transport mechanism includes a rotary driver, a box body, a gear, a round wheel and a connecting shaft. The rotary driver is fixed to the front of the movable block. The box body is fixed to the rotary driver. The gear is installed in the box body. The output shaft of the rotary driver is inserted into the box body and connected to the gear. The round wheel is rotatably installed in the box body through the connecting shaft. The gear and the round wheel are arranged adjacent to each other in the same plane, and the gap from the rim of the gear to the outer circumference of the round wheel is smaller than the diameter of the consumables. The upper and lower ends of the box body are provided with through holes for the consumables to pass through. The connecting line of the two through holes passes through the gap between the gear and the round wheel. When the movable block is placed in a posture installed on the horizontal transverse transport mechanism of the 3D printer, the middle box body is at a different height relative to the two box bodies on both sides, and the three box bodies are completely separated, and the middle box body and any other box body are staggered vertically, so that the total width of the three box bodies is less than the sum of the widths of the three box bodies.

[0014] By adopting the above technical solution, the transport mechanism clamps the consumables through gears and round wheels, and the consumables can be pushed forward by turning the gears. The spacing between the three boxes in the horizontal width direction is small, that is, the spacing between the three consumables is reduced, so that the three consumables are concentrated downward to the heat dissipation pipe, and the bending degree is small, so that the consumables are pushed smoothly, the nozzle at the bottom discharges the material evenly, and the printed objects are delicate and smooth.

[0015] On the second aspect, the present application also proposes a 3D printer, and adopts the following technical solution.

[0016] A 3D printer comprises the above-mentioned transport structure, and also comprises three wire harness tubes, three air pipe joints, a heat dissipation pipe, a throat pipe, a heat conduction block, a heating element, a temperature measuring element and a nozzle.

[0017] The heat dissipation pipe is provided with three wiring holes and one insertion hole from one end to the other end. The three wiring holes converge into the insertion hole. The outer wall of the heat dissipation pipe has spiral heat dissipation fins. The throat pipe has three throat holes penetrating from one end to the other end. The heat conduction block is provided with a penetrating threaded hole, a first mounting hole and a second mounting hole. The heat dissipation pipe and the heat conduction block are arranged at intervals.

[0018] One end of each wire harness tube is connected to a lower through hole of the box body, and the other end is connected to an air pipe joint. The three air pipe joints are installed in the three wiring holes one by one.

[0019] One end of the throat pipe is inserted into the insertion hole so that the three throat holes are aligned with the three wiring holes one by one, and the other end is spirally inserted into part of the threaded hole. The nozzle is inserted into the threaded hole from the other side of the heat conduction block and docked with the throat pipe.

[0020] The heating element is inserted into the first mounting hole. The temperature measuring element is inserted into the second mounting hole.

[0021] By adopting the above technical solution, three filaments pass through three wire bundle tubes, three wiring holes of the heat dissipation tube, and three throat holes of the throat tube in turn, and are finally extruded from the nozzle. The filaments are pushed forward smoothly in the whole process, the extruded material is uniform, and the printing quality is high.

[0022] A preferred solution of the 3D printer is that three receiving holes are provided at one end of the nozzle and a spray hole is provided at the other end. The three receiving holes are connected to the three throat holes one by one, and the three receiving holes merge into the spray hole.

[0023] By adopting the above technical solution, the nozzle further diverts the three consumables, so that the consumables can maintain a straight line during the melting process at the front end of the nozzle, thereby improving the smoothness of the consumables being pushed to the terminal hole.

[0024] A preferred solution of the 3D printer is that the 3D printer also includes a base, a horizontal longitudinal transport mechanism, a movable platform, a vertical transport mechanism, a bracket, a horizontal transverse transport mechanism and three winding groups. The horizontal longitudinal transport mechanism is installed on the base. The movable platform is installed on the output end of the horizontal longitudinal transport mechanism. The vertical transport mechanism and the bracket are installed in parallel on the base, and the vertical transport mechanism and the bracket are both arranged on both sides of the movable platform. The horizontal transverse transport mechanism is connected to the output end of the vertical transport mechanism, and the bracket is used as a vertical guide mechanism. The three winding groups are all installed on the top of the bracket, and the three winding groups wind consumables of different colors, and the three consumables are connected to the three groups of transport mechanisms one by one.

[0025] By adopting the above technical solution, the 3D printer can accurately adjust the position of the nozzle for precise printing.

[0026] In summary, the 3D printing multi-consumables transportation structure and 3D printer of the present application have the following beneficial effects:

[0027] The three groups of transport mechanisms are divided into multiple rows and compactly arranged, so that the spacing between the three filaments becomes smaller. When the three filaments are concentrated in the smaller wire harness mechanism (heat dissipation pipe) below, the bending degree of the three filaments is smaller. A wire harness tube (Teflon tube) is also connected between each group of transport mechanisms and the wire harness mechanism. The wire harness tube is sleeved on the outside of the filament to limit and protect the filament to prevent excessive bending or friction damage of the filament. After the above settings, the bending degree of the wire harness tube can also be set to be smaller, and the process of the transport mechanism pushing the filament through the wire harness tube and other channels is relatively smooth, so the nozzle discharges smoothly, the discharge amount is uniform, and the printing quality is good.

[0028] The nozzle of the 3D printer further divides the three filaments, so that the filaments can be pushed forward in a straight line during the melting process in the front section of the nozzle, improving the smoothness of the filaments being pushed to the terminal hole. The 3D printer can accurately adjust the position of the nozzle for precise printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front structural diagram of a 3D printing multi-consumable material transportation structure.

[0030] Figure 2 for Figure 1 Stereoscopic diagram.

[0031] Figure 3 For Figure 2 Another view after hiding the middle cable tube.

[0032] Figure 4 for Figure 3 The front view of the structure after hiding the left box cover.

[0033] Figure 5 For Figure 4 The structural diagram after the lower half of the structure is cut away.

[0034] Figure 6 for Figure 4 The structural diagram of the heat pipe.

[0035] Figure 7 for Figure 6 Bottom view of the heat pipe.

[0036] Figure 8 for Figure 4 Diagram of the throat structure.

[0037] Fig. 9 for Figure 4 The structure diagram of the heat conduction block.

[0038] Fig.10 for Fig. 9 Another perspective view of the thermal block.

[0039] Fig.11 for Figure 4 Structural diagram after hiding the heat pipe and heat conductive block.

[0040] Fig.12 for Figure 4 The nozzle structure diagram.

[0041] Fig.13 for Fig.12 A bottom view of the nozzle.

[0042] Fig.14 To include Figure 43D printer structure diagram of the structure.

[0043] Fig.15 for Fig.14 Another perspective of the picture.

[0044] Reference numerals: 1, movable block; 2, transport mechanism; 3, consumables; 101, fixing mechanism; 201, rotating driver; 202, box body; 203, gear; 204, round wheel; 205, connecting shaft; 2021, through hole; 4, wire harness; 5, air pipe joint; 6, heat dissipation pipe; 7, throat; 8, heat conduction block; 9, heating element; 10, temperature measuring element; 11, nozzle; 601, wiring hole; 602, installation hole; 603, heat dissipation fin; 701, throat hole; 801, threaded hole; 802, first mounting hole; 803 , second mounting hole; 1101, receiving hole; 1102, spray hole; 12, base; 13, horizontal longitudinal transport mechanism; 14, movable platform; 15, vertical transport mechanism; 16, bracket; 17, horizontal transverse transport mechanism; 18, winding group; 1301, bottom motor; 1302, longitudinal pulley; 1303, bottom guide; 1501, vertical motor; 1502, screw rod; 1503, internal thread block; 1701, slider; 1702, cross bar; 1703, transverse pulley; 1704, transverse motor. DETAILED DESCRIPTION

[0045] The 3D printing multi-consumables transportation structure and the 3D printer of the present application are described in detail below with reference to the accompanying drawings.

[0046] like Figure 1 , a 3D printing multi-consumable material transportation structure, including a movable block 1 and three groups of transportation mechanisms 2.

[0047] like Figure 2 The movable block 1 has a fixing mechanism 101 for connecting to a horizontal transverse transport mechanism of a 3D printer.

[0048] Each group of the transport mechanisms 2 is used to push a consumable material 3 .

[0049] When the movable block 1 is placed in a posture of being mounted on the horizontal transverse transport mechanism 17 of the 3D printer, the middle transport mechanism 2 is at a different height relative to the two transport mechanisms 2 on the sides, and the three transport mechanisms 2 are completely separated, and the middle transport mechanism 2 and any other transport mechanism 2 are staggered in the vertical direction, so that the total width of the three groups of transport mechanisms 2 is less than the sum of the widths of the three groups of transport mechanisms 2. Staggered means that the projections in the vertical direction have overlapping parts, for example, overlapping about half the width of the transport mechanism 2.

[0050] Through the arrangement of the three transport mechanisms 2 in rows and vertical staggering, the spacing between the three consumables 3 is reduced, and the three consumables 3 are concentrated downward to the smaller bundle mechanism (heat dissipation pipe 6) below, and the bending degree of the three consumables 3 is small. Figure 3 A wire harness tube 4 (Teflon tube) is also connected between each set of the transport mechanism 2 and the wire harness mechanism. The wire harness tube 4 is sleeved on the outside of the consumables 3 to limit and protect the consumables 3 to prevent the consumables 3 from being excessively bent or damaged by friction. After the above settings, the bending degree of the wire harness tube 4 can also be set to be smaller, and the process of the transport mechanism 2 pushing the consumables 3 through the wire harness tube 4 and other channels is relatively smooth, so the nozzle 11 discharges smoothly, the discharge amount is uniform, and the printing quality is good.

[0051] It is preferred that the three groups of transport mechanisms 2 have the same structure and size for easy configuration and installation. The two transport mechanisms 2 on both sides are at the same height, and the spacing between the two transport mechanisms 2 on both sides is 1.1 to 5 times the diameter of the consumables 3. This spacing setting makes the spacing between the two transport mechanisms 2 on both sides smaller, but the spacing is sufficient for the consumables 3 of the middle transport mechanism 2 to pass through. The three transport mechanisms 2 are arranged relatively compactly with each other, reducing the bending degree of the consumables 3 in the lower mechanism and improving the uniformity of the discharge.

[0052] The three groups of transport mechanisms 2 can be in the same plane, and the middle transport mechanism 2 can be below the two transport mechanisms 2 on both sides. If three groups of consumables 3 line sources are installed above the three groups of transport mechanisms 2, the three groups of consumables 3 line sources can be installed along the same axis, which improves the convenience of installation, and the three consumables 3 can smoothly enter the three groups of transport mechanisms 2.

[0053] The fixing mechanism 101 is arranged on the back of the movable block 1, and the three sets of the transport mechanisms 2 are all installed on the front of the movable block 1. The three sets of the transport mechanisms 2 and the consumables 3 will not interfere with the horizontal transverse transport mechanism 17 of the 3D printer, and the consumables 3 can move smoothly.

[0054] like Figure 2 and Figure 4A structure of the transport mechanism 2 is that each group of the transport mechanism 2 includes a rotary driver 201, a box body 202, a gear 203, a round wheel 204 and a connecting shaft 205. The rotary driver 201 can be a small motor, which is fixed to the front of the movable block 1. The box body 202 is fixed on the rotary driver 201. The gear 203 is installed in the box body 202. The output shaft of the rotary driver 201 is inserted into the box body 202 and connected to the gear 203. The round wheel 204 is rotatably installed in the box body 202 through the connecting shaft 205. The gear 203 and the round wheel 204 are arranged adjacent to each other in the same plane, and the gap from the rim of the gear 203 to the outer periphery of the round wheel 204 is smaller than the diameter of the consumable 3, so as to tightly clamp the consumable 3 and push the consumable 3 to move forward. The upper end and the lower end of the box body 202 are both provided with through holes 2021 for the consumable 3 to pass through. The connecting line of the two through holes 2021 passes through the gap between the gear 203 and the round wheel 204. When the movable block 1 is placed in a posture installed on the horizontal transverse transport mechanism 17 of the 3D printer, the middle box body 202 is at a different height relative to the two box bodies 202 on both sides, and the three box bodies 202 are completely separated, and the middle box body 202 and any other box body 202 are staggered in the vertical direction, so that the total width of the three box bodies 202 is less than the sum of the widths of the three box bodies 202.

[0055] The transport mechanism 2 of the above structure, the gear 203 and the round wheel 204 clamp the consumables 3, and the consumables 3 can be pushed downward by rotating the gear 203. The spacing between the three boxes 202 in the horizontal width direction is small, that is, the spacing between the three consumables 3 is reduced, so that the three consumables 3 have a small bending degree when they are concentrated downward to the heat dissipation pipe 6, so that the consumables 3 are pushed smoothly, the nozzle 11 at the bottom end discharges the material evenly, and the printed objects are delicate and smooth.

[0056] like Figure 5 A 3D printer includes the above-mentioned transport structure, and also includes three wire harness tubes 4, three air pipe joints 5, a heat dissipation pipe 6, a throat 7, a heat conduction block 8, a heating element 9, a temperature measuring element 10 and a nozzle 11.

[0057] Please refer to Figure 6 and Figure 7 The heat dissipation tube 6 is provided with three wiring holes 601 and one insertion hole 602 from one end to the other end. The three wiring holes 601 merge into the insertion hole 602. The heat dissipation tube 6 is made of metal, and its outer wall has spiral heat dissipation fins 603.

[0058] like Figure 8 The throat pipe 7 is cylindrical and has three throat holes 701 penetrating from one end to the other end, and the three throat holes 701 are parallel columns.

[0059] like Fig. 9 and Fig.10 The heat conducting block 8 is provided with a penetrating threaded hole 801, a first mounting hole 802 and a second mounting hole 803. The heat dissipation pipe 6 and the heat conducting block 8 are spaced apart, for example, the heat dissipation pipe 6 and the heat conducting block 8 are spaced apart by 1 mm to 3 mm.

[0060] The material of the plastic wire tube may be Teflon, which can operate for a long time at 260°C, which is 200°C higher than the temperature of melting the consumable 3, so that the plastic wire tube can operate stably for a long time in 3D printing.

[0061] like Fig.11 One end of each harness tube 4 is connected to a lower through hole 2021 of the box body 202, and the other end is connected to one of the air pipe connectors 5. The three air pipe connectors 5 are installed in the three wiring holes 601 one by one.

[0062] The throat tube 7 may be made of copper-titanium alloy. One end of the throat tube 7 is inserted into the insertion hole 602 so that the three throat holes 701 are aligned with the three wiring holes 601 one by one, and the other end is spirally inserted into part of the threaded hole 801. The nozzle 11 is inserted into the threaded hole 801 from the other side of the heat conductive block 8 and docked with the throat tube 7 so that the consumables 3 can pass through.

[0063] The heating element 9 is inserted into the first mounting hole 802. The heating element 9 may be a high resistor and can generate heat when connected to a power source. Generally, the heating element is heated to 200°C to melt the polylactic acid consumable 3 with a melting point of 176°C. The temperature measuring element 10 is inserted into the second mounting hole 803. The temperature measuring element 10 may be a thermocouple and can detect the temperature of the heat conductive block 8 when connected to a power source, which is equivalent to the temperature of the nozzle 11.

[0064] The above three consumables 3 pass through the three wire harness tubes 4, the three wiring holes 601 of the heat dissipation tube 6, and the three throat holes 701 of the throat tube 7 in sequence, and are finally extruded from the nozzle 11 after being heated and melted. The consumables 3 are pushed forward smoothly in the whole process, the extruded material is uniform, and the printing quality is high.

[0065] like Fig.12 and Fig.13 A preferred structure of the nozzle 11 is that the nozzle 11 has a threaded pipe section and a tapered section that are interconnected. The threaded pipe section has three parallel cylindrical receiving holes 1101, and the tapered section has a smaller spray hole 1102. The three receiving holes 1101 are connected to the three throat holes 701 one by one, and the three receiving holes 1101 merge into the spray hole 1102. The nozzle 11 of this structure can further divert the three consumables 3, so that the consumables 3 can also maintain a straight line during the melting process of the front section of the nozzle 11, which improves the smoothness of the consumables 3 being pushed to the terminal hole.

[0066] like Fig.14and Fig.15 The 3D printer further comprises a base 12, a horizontal longitudinal transport mechanism 13, a movable platform 14, a vertical transport mechanism 15, a bracket 16, a horizontal transverse transport mechanism 17 and three winding groups 18. The horizontal longitudinal transport mechanism 13 is mounted on the base 12. The movable platform 14 is mounted on the output end of the horizontal longitudinal transport mechanism 13. The vertical transport mechanism 15 and the bracket 16 are mounted on the base 12 in parallel, and the vertical transport mechanism 15 and the bracket 16 are both arranged on both sides of the movable platform 14. The horizontal transverse transport mechanism 17 is connected to the output end of the vertical transport mechanism 15, and the bracket 16 is used as a vertical guide mechanism. The three winding groups 18 are all mounted on the top of the bracket 16, and the three winding groups 18 wind consumables 3 of different colors, and the three consumables 3 are connected to the three groups of the transport mechanism 2 one by one. The 3D printer can accurately adjust the position of the nozzle 11 for precise printing.

[0067] The horizontal longitudinal transport mechanism 13 includes a bottom motor 1301, a longitudinal pulley 1302 and a bottom guide 1303. The lower end of the movable platform 14 is connected to a plurality of rollers. The longitudinal pulley 1302 includes a bottom belt and a bottom roller. The bottom motor 1301 is fixed on the base 12, a bottom roller is fixed at the output end of the bottom motor 1301, a belt is sleeved on the bottom roller, the other end of the belt is sleeved on another bottom roller, the bottom roller is rotatably mounted on the base 12, the movable platform 14 is fixed on the bottom belt, and a plurality of rollers at the lower end of the movable platform 14 are rollingly mounted in the guide groove of the bottom guide 1303, the guide groove is parallel to the bottom belt, so that when the bottom motor 1301 is started, the bottom belt runs back and forth, driving the movable platform 14 to move horizontally and longitudinally back and forth along the guide groove, that is, Y-axis movement.

[0068] The vertical transport mechanism 15 includes two vertical motors 1501, two vertical screw rods 1502 and two internal thread blocks 1503 with internal threads. Each vertical motor 1501 is connected to a screw rod 1502, and an internal thread block 1503 is sleeved on each screw rod 1502. The two ends of the horizontal and transverse transport mechanism 17 are connected to the two internal thread blocks 1503. When the vertical motor 1501 is started, the movable block 1 can move vertically, that is, move along the Z axis.

[0069] Specifically, the horizontal transverse transport mechanism 17 includes two sliders 1701, a crossbar 1702, a transverse pulley 1703 and a transverse motor 1704. The two ends of the crossbar 1702 are connected to the two internal thread blocks 1503 through the two sliders 1701. The two sliders 1701 are slidably connected to the two side rods of the bracket 16. The transverse pulley 1703 includes a transverse belt and a plurality of transverse rollers, and the two ends of the transverse belt are sleeved on the plurality of transverse rollers. The transverse motor 1704 is installed at one end of the crossbar 1702. The transverse motor 1704 is connected to one of the transverse rollers. The movable block 1 of the 3D printing multi-consumable material transport structure is fixed on the transverse belt by a fixing mechanism 101, and the fixing mechanism 101 can be a transverse plate or a clamping block, which is fixed on the transverse belt by gluing or clamping. The movable block 1 is also slidably connected to the crossbar 1702, thereby starting the transverse motor 1704, which can drive the 3D printing multi-consumable material transport structure as a whole to move back and forth horizontally, that is, move along the X axis.

[0070] Combining the above horizontal longitudinal transport mechanism 13, vertical transport mechanism 15 and horizontal transverse transport mechanism 17, the 3D printing multi-consumables transport structure can be driven to move in the X, Y and Z directions, thereby performing 3D printing.

[0071] The above are only some embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. For ordinary technicians in this technical field, some improvements and modifications without departing from the creative design of the present application should also fall within the protection scope of the present application.

Claims

1. A 3D printing multi-consumables transportation structure, characterized in that: It comprises a movable block (1) and three groups of transport mechanisms (2); the movable block (1) has a fixing mechanism (101) for connecting to a horizontal transverse transport mechanism (17) of a 3D printer; each group of the transport mechanisms (2) is used to push a consumable material (3); When the movable block (1) is placed in a posture of being mounted on a horizontal transverse transport mechanism (17) of a 3D printer, the middle transport mechanism (2) is at a different height relative to the two transport mechanisms (2) on the sides, and the three transport mechanisms (2) are completely separated, and the middle transport mechanism (2) and any other transport mechanism (2) are staggered with each other in the vertical direction, so that the total width of the three groups of transport mechanisms (2) is less than the sum of the individual widths of the three groups of transport mechanisms (2).

2. The 3D printing multi-consumables transport structure according to claim 1, characterized in that: The three groups of transport mechanisms (2) have the same structure and size; the two transport mechanisms (2) on both sides are at the same height, and the distance between the two transport mechanisms (2) on both sides is 1.1 to 5 times the diameter of the consumable (3).

3. The 3D printing multi-consumables transport structure according to claim 2, characterized in that: The three groups of transport mechanisms (2) are located in the same plane.

4. The 3D printing multi-consumables transport structure according to any one of claims 1 to 3, characterized in that: The fixing mechanism (101) is arranged on the back side of the movable block (1); and the three sets of the transport mechanisms (2) are all installed on the front side of the movable block (1).

5. The 3D printing multi-consumables transport structure according to any one of claims 1 to 3, characterized in that: Each set of the transport mechanism (2) comprises a rotary drive (201), a box body (202), a gear (203), a round wheel (204) and a connecting shaft (205); the rotary drive (201) is fixed to the front side of the movable block (1); the box body (202) is fixed to the rotary drive (201); the gear (203) is installed in the box body (202); the output shaft of the rotary drive (201) is inserted into the box body (202) and connected to the gear (203); the round wheel (204 ... 04) is rotatably mounted in the box body (202) via the connecting shaft (205); the gear (203) and the round wheel (204) are arranged adjacent to each other in the same plane, and the gap between the rim of the gear (203) and the outer periphery of the round wheel (204) is smaller than the diameter of the consumable (3); the upper and lower ends of the box body (202) are provided with through holes (2021) for the consumable (3) to pass through; the connecting line of the two through holes (2021) passes through the gap between the gear (203) and the round wheel (204); When the movable block (1) is placed in a posture of being mounted on a horizontal transverse transport mechanism (17) of a 3D printer, the middle box body (202) is at a different height relative to the two box bodies (202) on the sides, and the three box bodies (202) are completely separated, and the middle box body (202) and any other box body (202) are staggered with each other in the vertical direction, so that the total width of the three box bodies (202) is less than the sum of the widths of the three box bodies (202).

6. A 3D printer, characterized in that: The transport structure according to claim 5 further comprises three wire bundle tubes (4), three air pipe joints (5), a heat dissipation pipe (6), a throat pipe (7), a heat conduction block (8), a heating element (9), a temperature measuring element (10) and a nozzle (11); The heat dissipation pipe (6) is provided with three wiring holes (601) and one installation hole (602) from one end to the other end; the three wiring holes (601) merge into the installation hole (602); the outer wall of the heat dissipation pipe (6) has spiral heat dissipation fins (603); the throat pipe (7) has three throat holes (701) penetrating from one end to the other end; the heat conduction block (8) is provided with a penetrating threaded hole (801), a first installation hole (802) and a second installation hole (803); the heat dissipation pipe (6) and the heat conduction block (8) are arranged at intervals; One end of each wiring harness tube (4) is connected to a lower through hole (2021) of the box body (202), and the other end is connected to one of the air pipe connectors (5); the three air pipe connectors (5) are installed one by one in the three wiring holes (601); One end of the throat pipe (7) is inserted into the insertion hole (602) so that the three throat holes (701) are aligned with the three wiring holes (601) one by one, and the other end is spirally inserted into part of the threaded hole (801); the nozzle (11) is inserted into the threaded hole (801) from the other side of the heat conductive block (8) and docked with the throat pipe (7); The heating element (9) is inserted into the first mounting hole (802); and the temperature measuring element (10) is inserted into the second mounting hole (803).

7. The 3D printer according to claim 6, characterized in that: One end of the nozzle (11) is provided with three receiving holes (1101), and the other end is provided with a spray hole (1102); the three receiving holes (1101) are connected to the three throat holes (701) one by one, and the three receiving holes (1101) merge into the spray hole (1102).

8. The 3D printer according to claim 6, characterized in that: The 3D printer further comprises a base (12), a horizontal longitudinal transport mechanism (13), a movable platform (14), a vertical transport mechanism (15), a bracket (16), a horizontal transverse transport mechanism (17) and three winding groups (18); The horizontal longitudinal transport mechanism (13) is mounted on the base (12); the movable platform (14) is mounted on the output end of the horizontal longitudinal transport mechanism (13); the vertical transport mechanism (15) and the bracket (16) are mounted in parallel on the base (12), and the vertical transport mechanism (15) and the bracket (16) are both arranged on both sides of the movable platform (14); the horizontal transverse transport mechanism (17) is connected to the output end of the vertical transport mechanism (15), and the bracket (16) serves as a vertical guide mechanism; the three winding groups (18) are all mounted on the top of the bracket (16), and the three winding groups (18) wind consumables (3) of different colors, and the three consumables (3) are connected to the three groups of transport mechanisms (2) one by one.

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