3D printing wire drying combined device and 3D printer

Abstract

A 3D printing wire drying combined device comprises a hot air bottom box, a drying box, a hot air pipeline module and a power module. Ventilation windows are arranged at the bottom of the drying box; the drying box is detachably arranged at the upper part of the hot air bottom box; first and second ventilation openings are formed in the upper part of the hot air bottom box; a drying box bottom ventilation window communicates with the first and second ventilation openings; the hot air pipeline module is arranged in the hot air bottom box and electrified to generate hot air; the hot air pipeline module communicates with the first ventilation opening through the air inlet end and communicates with the second ventilation opening through the air outlet end. The drying box is used for storing trays and printing wires. The device is used for combined replacement drying of the drying box and the printing wires.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a 3D printing wire drying combination device and a 3D printer applying the combination device. BACKGROUND

[0002] At present, in the fused deposition modeling (FDM) 3D printing technology, the plastic raw material without drying is directly used for printing, which will appear bubble holes, affecting the printing effect. Therefore, in order to keep the drying of the printing wire, some wire storage drying boxes have been provided on the market; for example, the first drying box is designed as a whole with a heating device and a box body, which has one tray position, and can heat and dry and store a single tray and a single roll of printing wire each time; for example, the second drying box is expanded to two tray positions on the basis of a single box body, which can dry and store two rolls of printing wire at the same time each time; for example, the third drying box is expanded to four tray positions on the basis of a single box body, which can dry and store four rolls of printing wire at the same time each time.

[0003] However, these drying boxes have some deficiencies; for example, each drying box needs to be equipped with a set of heating modules and power supply, which is relatively high in cost; and the dried wire needs to be taken out to make room for the next group of wires, and the taken-out wire is not conducive to drying and storage. Content of the utility model

[0004] The purpose of the embodiment of the present application is to provide a 3D printing wire drying combination device and a 3D printer applying the combination device, which adopts the disassembly and combination mode of the drying box and the heating device, can replace the drying box to heat and dry and seal the wire on the basis of sharing the hot air bottom box, is lower in cost, and is more convenient to use.

[0005] The 3D printing wire drying combination device provided by the embodiment of the present application comprises a hot air bottom box, a drying box, a hot air pipeline module and a power supply module.

[0006] The bottom of the drying box is provided with a ventilation window; the drying box is detachably arranged on the upper part of the hot air bottom box; the upper part of the hot air bottom box is provided with a first ventilation opening and a second ventilation opening; and the ventilation window of the bottom of the drying box is communicated with the first ventilation opening and the second ventilation opening.

[0007] The hot air pipe module is arranged inside the hot air bottom box; the hot air pipe module is electrically connected to the power module; the power module supplies power to the hot air pipe module; the hot air pipe module generates hot air after being powered; the hot air pipe module takes in air from the air inlet end, generates hot air, and blows out the hot air from the air outlet end; the hot air pipe module is connected to the first air vent at the air inlet end and is connected to the second air vent at the air outlet end; the hot air pipe module and the drying box form a detachable closed hot air circulation space; the drying box is used to store the material disc and the printing wire.

[0008] Further, the hot air pipe module includes a pipe, a fan, and a heating module; the fan is connected to the pipe, and the air inlet of the fan is the air inlet end; the heating module is arranged in the pipe; the air outlet of the pipe is the air outlet end; the fan and the heating module are electrically connected to the power module; the fan operates to take in air; and the hot air pipe module heats the air taken in.

[0009] Further, the drying box includes a box, a cover, and a connecting shaft; the box includes an air vent, a movable cover plate, four rollers, and a desiccant groove; and the cover includes a wire outlet hole and a hole plugging device.

[0010] The cover is movably connected to the box through the connecting shaft; the air vent is arranged at the bottom of the box and is used for air intake or air exhaust; the movable cover plate is detachably sealed to the opening of the air vent and is used for opening or closing the air vent; the rollers are arranged inside the box; the rollers are arranged in pairs and are parallel to each other and are used to form two parallel material disc placing positions; the rollers are used to lift the material disc and the wire to reduce the friction when the material disc rolls; and the desiccant groove is arranged inside the box and is used to place the desiccant.

[0011] The wire outlet hole is arranged at the upper part of the cover and is used to lead out the wire; and the hole plugging device is used to close the air hole of the wire outlet hole.

[0012] Further, the bottom of the box is further provided with a cover plate groove for accommodating and fixing the movable cover plate; and the edge of the air vent is further provided with a sealing member for enhancing the sealing performance of the movable cover plate on the air vent.

[0013] Further, the 3D printing wire drying assembly further includes a control module; the control module is arranged inside the hot air bottom box; the control module is electrically connected to the power module and the hot air pipe module; and the control module is used to control the operation of the hot air pipe module.

[0014] Further, the 3D printing wire drying combination device further comprises a trigger; the upper part of the hot air bottom box is further provided with a skylight; the trigger is arranged in the hot air bottom box; the trigger is exposed from the skylight; the trigger is electrically connected with the control module; the trigger is used for contacting or sensing the drying box and generating a trigger signal for controlling the operation of the hot air pipe module.

[0015] Further, the 3D printing wire drying combination device further comprises an auxiliary wire feeder; the auxiliary wire feeder is detachably connected to the drying box; the auxiliary wire feeder is used for electrically assisting the printing wire.

[0016] Further, the 3D printing wire drying combination device further comprises an operation panel; the operation panel is connected to the hot air bottom box; the operation panel is electrically connected to the control module; the operation panel is used for providing a display and interactive operation interface for a user, so as to set control parameters for the control module.

[0017] Further, the upper part of the hot air bottom box is provided with a positioning column; the bottom of the drying box is provided with a positioning groove; the drying box is matched to the positioning column through the positioning groove, so that the drying box is aligned with the first air vent and the second air vent through the ventilation window.

[0018] The purpose of the present application is also to provide a 3D printer, in particular the 3D printer, comprising the 3D printing wire drying combination device.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The wire drying and storage combination device can be used in combination with multiple drying boxes with one hot air bottom box, so that only one power supply is needed for the hot air bottom box, the need for external power supply interfaces is reduced, and the cost is reduced under the condition of sharing one hot air bottom box.

[0021] 2. The wire drying and storage combination device can replace the drying box and the wire inside to heat the new wire without removing the wire in the replaced drying box to create space, and can keep the wire in the drying box dry through sealing and desiccant without additional power supply.

[0022] 3. The wire drying and storage combination device can be compatible with one hot air bottom box, and can selectively exchange and target drying of the drying box and the printing wire between multiple wire drying and storage combination devices.

[0023] 4. The wire drying and storage combined device of the present application can simultaneously supply printing materials for two printers when single-color printing is performed;

[0024] 5. The wire drying and storage combined device of the present application can supply double-color printing materials for a double-color printer;

[0025] 6. The wire drying and storage combined device of the present application can use a drying box with double material disc positions to simultaneously dry two rolls of printing wires, which is highly efficient;

[0026] 7. The wire drying and storage combined device of the present application can use a flip-flop to separately control the heating of the corresponding drying box according to the placement trigger condition of the drying box, which can save energy;

[0027] 8. The drying box in the present application can use the ventilation window to enter dry hot air for environmental heating, and can use the movable cover plate to close the drying box for closed drying, so as to realize long-term drying and storage without constant heating and power supply;

[0028] 9. The wire drying and storage combined device of the present application can use an auxiliary wire feeder to assist and enhance the wire feeding capacity, improve the wire supply capacity of the 3D printer, prevent printing bubbles caused by untimely wire feeding due to excessive weight of the material disc or excessive wire feeding resistance, and especially when multiple material discs are used for multi-color material feeding, the auxiliary wire feeder can obviously enhance the wire feeding capacity and improve the switching speed during wire switching printing. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Embodiment 1 of the 3D printing wire drying combined device of the present application;

[0030] Figure 2 Wire storage schematic diagram of the 3D printing wire drying combined device of the present application;

[0031] Figure 3 Hot air bottom box schematic diagram of the 3D printing wire drying combined device of the present application Figure 1 ;

[0032] Figure 4 Hot air bottom box schematic diagram of the 3D printing wire drying combined device of the present application Figure 2 ;

[0033] Figure 5 Hot air bottom box schematic diagram of the 3D printing wire drying combined device of the present application Figure 3 ;

[0034] Figure 6 Hot air bottom box schematic diagram of the 3D printing wire drying combined device of the present application Figure 4 ;

[0035] Figure 7 Drying box schematic diagram of the 3D printing wire drying combination device of the present application Figure 1

[0036] Figure 8 Drying box schematic diagram of the 3D printing wire drying combination device of the present application Figure 2

[0037] Figure 9 Drying box schematic diagram of the 3D printing wire drying combination device of the present application Figure 3

[0038] Figure 10 Drying box schematic diagram of the 3D printing wire drying combination device of the present application Figure 4

[0039] Figure 11 Embodiment 2 of the 3D printing wire drying combination device of the present application

[0040] Figure 12 Detailed schematic diagram of the drying box of the 3D printing wire drying combination device of the present application

[0041] Figure 13 Schematic diagram of the printing use of the 3D printing wire drying combination device of the present application

[0042] Label explanation:

[0043] Hot air bottom box 1; drying box 2; operation panel 3; auxiliary wire feeder 4; tray 5; box bottom 11; box cover 12; hot air pipeline module 13; power supply module 14; control module 15; trigger 16; mounting groove 41; mounting hole 42; printing wire 51; first ventilation opening 121; second ventilation opening 122; skylight 123; positioning column 124; foot pad groove 125; pipeline 131; fan 132; heating module 133; fan air inlet 130; fan air outlet 140; power supply interface 141; pipeline air inlet 150; pipeline air outlet 160; box 201; cover 202; connecting shaft 210; air vent 211; moving cover plate 212; roller 213; drying agent groove 214; drying agent 215; mesh cover 216; positioning groove 217; foot pad 218; wire outlet hole 219; plug hole device 220; cover plate groove 221; buckle hand groove 222; sealing element 223; magnet 224; through hole 231; soft belt 232; first stud 233; second stud 234; wire storage combination device 100; 3D printer 300; flexible conduit 301; printer extrusion nozzle 302. DETAILED DESCRIPTION

[0044] ​​​​In order to make the purposes, characteristics and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0045] Figure 1 The present application is an embodiment of a 3D printing wire drying combination device. As shown in the figure, the wire storage combination device 100 in the figure includes a hot air bottom box 1 and a drying box 2. The drying box 2 is detachably arranged at the upper part of the hot air bottom box 1. In addition, two wire outlet holes 219 and a plug hole device 220 are shown on the front upper part of the box cover 202. The wire outlet holes 219 are used to lead out the wire. The plug hole device 220 is used to close the air hole of the wire outlet hole 219.

[0046] Further, the present application also includes an operation panel 3. The operation panel 3 is connected to the hot air bottom box 201. The operation panel 3 is electrically connected to the power module 14. The operation panel 3 is used to provide power indication for the user, or to display the working state of the hot air pipeline module 13, or to serve as on-off control for the power module 14.

[0047] In the present embodiment, the power module can be directly used to control the power supply of the first hot air pipeline module 13 and the second hot air pipeline module 14 to realize the simplest printing wire drying function.

[0048] Figure 2 The present application is an embodiment of a 3D printing wire drying combination device. As shown in the figure, the wire storage combination device 100 in the figure includes a hot air bottom box 1 and a drying box 2. The drying box 2 is detachably arranged at the upper part of the hot air bottom box 1. In addition, two wire outlet holes 219 and a plug hole device 220 are shown on the front upper part of the box cover 202. The wire outlet holes 219 are used to lead out the wire. The plug hole device 220 is used to close the air hole of the wire outlet hole 219.

[0049] Figure 3 The present application is an embodiment of a 3D printing wire drying combination device. As shown in the figure, the wire storage combination device 100 in the figure includes a hot air bottom box 1 and a drying box 2. The drying box 2 is detachably arranged at the upper part of the hot air bottom box 1. In addition, two wire outlet holes 219 and a plug hole device 220 are shown on the front upper part of the box cover 202. The wire outlet holes 219 are used to lead out the wire. The plug hole device 220 is used to close the air hole of the wire outlet hole 219. Figure 1 As shown in the figure, the first air vent 121 and the second air vent 122 can be seen on the upper part of the hot air bottom box 201.

[0050] In particular, a trigger 16 is arranged inside the left side of the hot air bottom box 201, and a skylight 123 is also arranged on the upper part of the left side of the hot air bottom box 201. The trigger 16 is protruded from the skylight 123. The trigger 16 is used to contact or sense the drying box 2 and generate a trigger signal, which is used to control the operation of the hot air pipeline module 13 inside the hot air bottom box 201.

[0051] Figure 4 The hot air bottom box of the 3D printing wire drying combination device of the embodiment of the present application is shown Figure 2 As shown in the figure, the figure focuses on the internal composition of the hot air bottom box, and the hot air bottom box 1 includes a box bottom 11 and a box cover 12; and a hot air pipeline module 13, a power module 14, a control module 15, and a trigger 16 are installed in the hot air bottom box 1;

[0052] Specifically, a first air vent 121 and a second air vent 122 are arranged on the upper plane of the box cover 12;

[0053] Specifically, the hot air pipeline module 13, the power module 14, the control module 15, and the trigger 16 are fixed to the box bottom 11;

[0054] The hot air pipeline module 13 is electrically connected to the power module 14; the power module 14 supplies power to the hot air pipeline module 13; the hot air pipeline module 13 generates hot air after being powered on; in the figure, the hot air pipeline module 13 takes in air through a fan air inlet 130 and discharges air through a pipeline air outlet 160; and the power module 14 is connected to an external power source through a power source interface 141.

[0055] Figure 5 The hot air bottom box of the 3D printing wire drying combination device of the embodiment of the present application is shown Figure 3 As shown in the figure, the figure only shows the state when the hot air bottom box 1 is separated from the operation panel 3; and also shows that a skylight 123 is arranged on the left side of the first air vent 121; in combination Figure 4 , the trigger 16 of the hot air bottom box 1 will be exposed from the skylight 123;

[0056] In addition, positioning columns 124 and foot pad grooves 125 are arranged on both sides of the first air vent 121 and the second air vent 122; in combination Figure 7 , the bottom of the drying box 2 is provided with a positioning groove 217; the drying box 2 is matched to the positioning columns 124 on the upper part of the hot air bottom box 201 through the bottom positioning groove 217, so that the drying box 2 is aligned with the first air vent 121 and the second air vent 122 through the air vent 211; at the same time, since Figure 7 the foot pad 218 is needed to place and buffer when the drying box is used, the foot pad grooves 125 are arranged on the upper part of the hot air bottom box 1; the foot pad 218 on the bottom of the drying box is matched and placed, so that when the drying box 2 is detachably placed in the hot air bottom box 1, the air tightness is maintained.

[0057] Figure 6 The hot air bottom box of the 3D printing wire drying combination device of the embodiment of the present application is shown Figure 4 As shown in the figure, the figure shows Figure 4The specific structure of the hot air pipe module 13 is shown on the basis; specifically, the hot air pipe module 13 comprises a pipe 131, a fan 132, and a heating module 133;

[0058] The fan 132 is connected to the pipe 131, the fan inlet 130 of the fan 132 is the air inlet end, and the fan outlet 140 of the fan 132 is connected to the pipe 131; the heating module 133 is arranged in the pipe 131 and is arranged at a position close to the pipe outlet 160; the pipe outlet 160 of the pipe 131 is the air outlet end;

[0059] The fan 132 and the heating module 133 are electrically connected to the power module 14 in Figure 4 ; the fan 132 operates the air inlet; the hot air pipe module 13 heats the air inlet.

[0060] Figure 7 The drying box of the 3D printing wire drying assembly of the embodiment of the present application is shown Figure 1 . As shown, the present drawing only takes the box 201 of the lower part of the drying box 2 as an example for illustration, and it can be seen that the side rear part of the box 201 in the present application is provided with two groups of connecting shafts 210, and the box 201 is connected to the box cover 202 through the connecting shafts 210 (see Figure 8 );

[0061] Two groups of air vents 211 are respectively designed on the front and rear positions of the bottom of the box 201, and a detachable moving cover plate 212 is respectively arranged at the opening of each air vent 211; the two groups of moving cover plates 212 are used to open the air or close the air; when the box 201 is placed in the hot air bottom box 1, and the moving cover plate 212 is removed, one air vent 211 at the bottom of the box 201 is detachably connected to the first air vent 121, and the other air vent 211 is detachably connected to the second air vent 122;

[0062] In addition, a cover plate groove 221 is arranged at the bottom of the box 201, and the cover plate groove 221 is used to accommodate and fix the moving cover plate 212; a buckle groove 222 is arranged at the front and rear edges of each cover plate groove 221, and the buckle groove 222 is used to facilitate the removal of the moving cover plate 212 from the cover plate groove 221; a sealing element 223 is arranged at the edge of the air vent 211, and the sealing element 223 is used to enhance the sealing property of the moving cover plate 212 to the air vent 211; when the drying box 2 needs to be removed, the moving cover plate 212 can be installed on the air vent 211 to close it, so that the inside of the whole box body remains dry;

[0063] In addition, the bottom of the box 201 is provided with a positioning groove 217 and a foot pad 218; in combination Figure 5As shown in the figure, the box 201 can be matched to the positioning column 124 on the upper part of the hot air bottom box 201 through the bottom positioning groove 217, so that the box 201 is aligned with the first air vent 121 and the second air vent 122 with its ventilation window 211; at the same time, since the box 201 needs to be placed and buffered with the foot pad 218 when in use; therefore, a foot pad groove 125 is arranged on the upper part of the hot air bottom box 1; for matching the foot pad 218 placed at the bottom of the drying box, so that when the box 201 is detachably placed in the hot air bottom box 1, the air tightness is maintained well.

[0064] Figure 8 Schematic diagram of the drying box of the 3D printing wire drying combination device in the embodiment of the present application Figure 2 As shown in the figure, the drying box 2 is taken as an example in the figure; it can be seen that the drying box 2 in the embodiment of the present application can store two trays 5 and two rolls of printing wires 51 at the same time; combined with Figure 7 As shown in the figure, the box 201 and the box cover 202 are movably connected through the connecting shaft 210;

[0065] In addition, after the box cover 202 is opened, the printing wire 51 is led outwards from the wire outlet hole 219 at the rear (see Figure 12 the wire outlet hole 219), and this is to facilitate the opening of the box cover 202 when the printing wire 51 is led outwards.

[0066] Figure 9 Schematic diagram of the drying box of the 3D printing wire drying combination device in the embodiment of the present application Figure 3 As shown in the figure, the internal structure of the box 201 at the lower part of the drying box 2 is shown in the figure; two groups of ventilation windows 211 are arranged at the bottom of the box 201, for air inlet or air outlet; four groups of rollers 213 are arranged at the inner bottom of the box 201; the two groups of rollers 213 are parallel and opposite to each other, for forming two side-by-side tray placing positions; the rollers 213 are used to lift the tray and the printing wire to reduce the friction when the tray rolls; the desiccant grooves 214 are arranged at the four corners of the inner bottom of the box 201, for placing the desiccants 215.

[0067] In addition, the edge of the ventilation window 211 is provided with a magnet 224, for attracting and fixing the movable cover plate 212 shown in Figure 7 The inner bottom of the box 201 is also provided with a magnet 224 within the range of the cover plate groove 221, and when the cover plate groove 221 contains the movable cover plate 212 shown in Figure 7 , the magnet 224 can be used to attract and fix the movable cover plate 212; in particular, the movable cover plate 212 is made of a magnetically attracted metal material.

[0068] Figure 10 Schematic diagram of the drying box of the 3D printing wire drying combination device in the embodiment of the present application Figure 4As shown in the figure, the figure is a schematic diagram of the box 201 with the mesh cover 216 installed; the mesh cover 216 is arranged at the bottom of the box 201; the mesh cover 216 is used to cover the air vent 211 and the desiccant groove 214, mainly to prevent the volume of the desiccant 215 from interfering with the rotation of the tray.

[0069] Figure 11 Embodiment 2 of the 3D printing wire drying combination device of the present application is provided. As shown in the figure, the wire storage combination device 100 of the present application includes a hot air bottom box 1, a drying box 2, an operation panel 3, and two sets of auxiliary wire feeders 4; the operation panel 3 is connected to the hot air bottom box 201; the two sets of auxiliary wire feeders 4 are detachably connected to the drying box 2; the auxiliary wire feeder 4 is used to assist in enhancing the wire feeding capacity, improve the wire supply capacity of the 3D printer, prevent the printing bubbles caused by the wire feeding not in time due to the excessive weight of the tray or the excessive wire feeding resistance, especially when multiple trays are used for multi-color feeding, the auxiliary wire feeder 4 can significantly enhance the wire feeding capacity and improve the switching speed during wire switching printing.

[0070] Figure 12 The detailed schematic diagram of the drying box of the 3D printing wire drying combination device of the present application is provided. As shown in the figure, the wire storage combination device 100 of the present application is shown in the figure; four wire outlet holes 219 are arranged at the front and rear positions of the upper part of the box cover 202 in the figure, respectively for the front and rear wire outlets of two rolls of wire; correspondingly, plug hole devices 220 are installed at the four wire outlet holes 219, which are used for air hole closure of the four wire outlet holes 219; in addition, two mounting grooves 41 are arranged at the rear edge position of the upper part of the box cover 202, and mounting holes 42 are arranged in the mounting grooves 41; the mounting grooves 41 or the mounting holes 42 can be used to install the auxiliary wire feeder 4 as shown in Figure 11 the figure; in order to expose the mounting grooves 41 and the mounting holes 42, one plug hole device 220 is omitted in the figure;

[0071] In particular, the plug hole device 220 adopts a special structure in the figure; the plug hole device 220 includes a through hole 231, a soft belt 232, a first stud 233, and a second stud 234; when the plug hole device 220 is fixed to the wire outlet hole 219, the through hole 231 can be used for ventilation; the first stud 233 is arranged at the front end of the soft belt 232, and the second stud 234 is arranged at the middle position of the soft belt 232; rotating the angle of the plug hole device 220 can make the second stud 234 tightly plug the mounting hole 42; when the soft belt 232 is bent backward, the first stud 233 can be used to tightly plug the through hole 220; the plug hole device 220 adopts this structure in order to block the through hole 220 and also block the mounting hole 42, thereby further enhancing the air tightness of the drying box to maintain the continuous drying of the internal wire.

[0072] Figure 13The figure is a schematic diagram of the printing use of the 3D printing wire drying combined device of the embodiment 3 of the present application. As shown in the figure, the figure shows the scene diagram of the wire storage combined device 100 of the present application used in cooperation with the 3D printer 300 after the auxiliary wire feeder 4 is installed. The auxiliary wire feeder 4 is connected with the extrusion nozzle 302 of the printer through the flexible pipe 301. The auxiliary wire feeder 4 can send the wire from the flexible pipe 301 to the extrusion nozzle 302 of the printer for printing. The flexible pipe 201 can reduce the resistance of wire feeding.

[0073] As can be seen from the figure, the user can dry two rolls of printing wire at the same time, and can optionally access one roll of printing wire to the 3D printer 300 for printing use. The two drying boxes can be arbitrarily replaced in position for heating, and one drying box that has been heated and dried can be replaced.

[0074] It should be understood that in the present specification, the terms "upper", "upper portion", "bottom", "front", "rear" and other directional words are only for the convenience of description, and do not indicate or imply 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 limiting the scope of protection of the present application.

[0075] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A 3D printing filament drying assembly, comprising: It comprises a hot air bottom box (1), a drying box (2), a hot air pipeline module (13), and a power module (14). The bottom of the drying box (2) is provided with a ventilation window (211), and the drying box (2) is detachably arranged on the upper part of the hot air bottom box (1); the upper part of the hot air bottom box (1) is provided with a first ventilation opening (121) and a second ventilation opening (122); the ventilation window (211) at the bottom of the drying box (2) is communicated with the first ventilation opening (121) and the second ventilation opening (122). The hot air pipeline module (13) is arranged in the hot air bottom box (1); the hot air pipeline module (13) is electrically connected to the power module (14); the power module (14) supplies power to the hot air pipeline module (13); the hot air pipeline module (13) generates hot air after being powered on; the hot air pipeline module (13) takes in air from the air inlet end, generates hot air, and blows out the hot air from the air outlet end; the hot air pipeline module (13) is communicated with the first ventilation opening (121) through the air inlet end and communicated with the second ventilation opening (122) through the air outlet end; the hot air pipeline module (13) and the drying box (2) form a detachable closed hot air circulation space; the drying box (2) is used for storing a tray and a printing wire.

2. The 3D printing filament drying assembly of claim 1, wherein, The hot air pipeline module (13) comprises a pipeline (131), a fan (132), and a heating module (133); the fan (132) is connected to the pipeline (131), and the air inlet of the fan (132) is the air inlet end; the heating module (133) is arranged in the pipeline (131); the air outlet of the pipeline (131) is the air outlet end; the fan (132) and the heating module (133) are electrically connected to the power module (14); the fan (132) operates to take in air; the hot air pipeline module (13) heats the air.

3. The 3D printing filament drying assembly of claim 1, wherein, The drying box (2) comprises a box (201), a cover (202), and a connecting shaft (210); the box (201) comprises a ventilation window (211), a movable cover plate (212), four rollers (213), and a desiccant groove (214); the cover (202) comprises a wire outlet hole (219) and a plug hole device (220); The cover (202) is movably connected to the box (201) through the connecting shaft (210); the ventilation window (211) is arranged at the bottom of the box (201) and used for air intake or air exhaust; the movable cover plate (212) is detachably arranged on the opening of the ventilation window (211) and used for opening or closing the ventilation; the rollers (213) are arranged in the box (201); the rollers (213) are arranged in pairs and parallel to each other and used for forming two parallel tray placing positions; the rollers (213) are used for supporting the tray and the wire to reduce the friction when the tray rolls; the desiccant groove (214) is arranged in the box (201) and used for placing a desiccant. The wire outlet hole (219) is arranged at the upper part of the box cover (202), and is used for leading out the wire; the jack plug device (220) is used for air hole sealing of the wire outlet hole (219).

4. The 3D printing filament drying assembly of claim 3, wherein, The bottom of the box (201) is further provided with a cover plate groove (221) for accommodating and fixing the movable cover plate (212); the edge of the air window (211) is further provided with a sealing piece (223) for enhancing the sealing performance of the movable cover plate (212) to the air window (211).

5. The 3D printing filament drying assembly of claim 1, wherein, Further comprising a control module (15); the control module (15) is arranged in the interior of the hot air bottom box (1); the control module (15) is electrically connected with the power module (14) and the hot air pipeline module (13); the control module (15) is used for controlling the operation of the hot air pipeline module (13).

6. The 3D printing filament drying assembly of claim 5, wherein, Further comprising a trigger (16); the upper part of the hot air bottom box (1) is further provided with a skylight (123); the trigger (16) is arranged in the interior of the hot air bottom box (1); the trigger (16) is projected out of the skylight (123); the trigger (16) is electrically connected with the control module (15); the trigger (16) is used for contacting or sensing the drying box (2) and generating a trigger signal for controlling the operation of the hot air pipeline module (13).

7. The 3D printing filament drying assembly of claim 5, wherein, Further comprising an auxiliary wire feeder (4); the auxiliary wire feeder (4) is detachably connected with the drying box (2); the auxiliary wire feeder (4) is used for electrically assisting the feeding of the printing wire.

8. The 3D printing filament drying assembly of claim 5, wherein, Further comprising an operation panel (3); the operation panel (3) is connected with the hot air bottom box (1); the operation panel (3) is electrically connected with the control module (15); the operation panel (3) is used for providing a display and interactive operation interface for the user, so as to set the control parameters of the control module (15).

9. The 3D printing filament drying assembly of claim 1, wherein, The upper part of the hot air bottom box (1) is provided with a positioning column (127); the bottom of the drying box (2) is provided with a positioning groove (217); the drying box (2) is matched to the positioning column (127) through the positioning groove (217), so that the drying box (2) is aligned with the first air vent (121) and the second air vent (122) through the air window (211).

10. A 3D printer characterized by, The 3D printing wire drying assembly device comprises the 3D printing wire drying assembly device according to any one of claims 1-9. The 3D printing wire drying assembly device comprises the 3D printing wire drying assembly device according to any one of claims 1-9.

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