Spiral tube type 3D printing consumable drying machine

Abstract

The invention relates to the technical field of 3D printing, in particular to a spiral tube type 3D printing consumable drying machine which comprises a base, a main board, a consumable tray support, a spiral drying tube assembly, a spiral drying tube assembly fixing base, a temperature controller, a power switch and a shell. The spiral drying pipe assembly comprises a metal pipe, a temperature probe, a heat preservation pipe and a carbon fiber heating wire spirally wound on the outer wall of the metal pipe, and a Teflon wire pipe is arranged in the metal pipe; the consumable wire penetrates through the spiral drying pipe assembly, the spirally-wound carbon fiber heating wire heats the metal pipe, the metal pipe is heated and then penetrates through the Teflon wire pipe arranged in the metal pipe in a heat radiation mode, the consumable wire which slowly passes through is evenly and rapidly dried, only a small section of consumable wire which is about to be used for printing is dried, the drying time is short, and the drying efficiency is high. The problems of long drying time, high energy consumption, consumable deterioration caused by repeated drying, fan operation noise and the like of a 3D printing material drying machine in the current market are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a spiral tube type 3D printing consumables drying machine. Background Art

[0002] At present, various types of PLA, PETG, ABS and other 3D printing consumables (hereinafter referred to as consumables) commonly used in FDM 3D printers on the market have certain hygroscopic characteristics. If you do not pay attention to protection and expose them to humid air, the consumables will be penetrated by the moisture in the air. Using damp consumables is a major problem affecting the quality of 3D printing. When the material absorbs moisture, it will become brittle, bubbling or sticky. In severe cases, it may produce steam and hissing sounds when heated, which will cause the 3D printer extruder, nozzle and other parts to get stuck or the printed parts to produce bubbles, drawing and other problems, resulting in defects in the printed model or even failure. The solution is generally to use a 3D printing filament dryer to heat and dehumidify the filaments. The mainstream 3D filament dryers on the market generally use PCT heating or heating film heating to heat and dry the entire reel of filaments. Since the filaments are tightly wound on the reel layer by layer from the inside to the outside, the hot air in the dryer surrounds the filament roll 360 degrees for drying. Except for a few layers of filaments close to the surface, the filaments closer to the axis of the reel are more difficult to dry. It usually takes several hours of continuous drying to dry all the filaments from the outside to the inside, which takes a long time and consumes a lot of energy. If they are not properly stored and repeatedly exposed to moisture, they will be easily damaged. , and then repeated drying will easily cause the filaments to become brittle and easy to break, or adjacent filaments to melt and stick together, causing the filaments to be scrapped and unusable; in addition, in order to maintain a constant temperature during the drying process, the dryer is usually tightly sealed, and the water vapor generated by drying is not easy to be discharged from the dryer; PCT heating dryers are generally equipped with fans, and certain noise pollution will be generated during operation; therefore, this type of 3D filament dryer has the disadvantages of not being able to dry part of the materials that are about to be used, long drying time, high energy consumption, over-drying, repeated drying, materials that are easy to become brittle, break, and stick together and become scrapped, water vapor is not easy to be discharged, and noise pollution. Summary of the invention

[0003] In view of the above defects, the present invention provides a spiral tube type 3D printing consumables drying machine, which can dry part of the consumables to be used. When the FDM type 3D printer prints a model, the feeding speed is slow. Usually, it takes about ten minutes to print 100CM of consumables. In this way, the consumables before entering the print head have a relatively sufficient heating time for drying operation, that is, the spiral drying tube assembly is used to dry part of the consumables that are about to enter the 3D printer for printing. The drying time and effect are proportional to the length of the spiral drying tube assembly. However, an overly long spiral drying tube assembly will produce a large amount of friction with the consumables. Friction causes feeding failure of 3D printers. In order to reduce friction, an internal tooth structure is designed axially inside the Teflon feed tube to effectively reduce the contact area between the filament and the feed tube, thereby reducing friction. While extending the length and drying time of the spiral drying tube, it ensures smooth feeding of the 3D printer and achieves printing while drying. It has the characteristics of short drying time, low energy consumption, and repeated drying has no adverse effects on the vast majority of unused filaments in the same roll of filaments. For the water vapor generated during drying, a heat exchange vent is specially set on the Teflon feed tube to remove the water vapor smoothly. The whole machine does not require a heat dissipation circulation fan and has a good silent effect.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A spiral tube type 3D printing consumables drying machine comprises a base, a mainboard, a consumables tray bracket, a spiral drying tube assembly, a spiral drying tube assembly fixing seat, a temperature controller, a power switch and a shell.

[0006] A mainboard is vertically mounted on the base, and a consumable material tray bracket is mounted on one side of the mainboard;

[0007] A spiral drying tube assembly is installed on the main board, and the spiral drying tube assembly passes through the main board, one end of which, namely, the feeding port of the drying tube assembly is on the side where the consumable material tray bracket is installed, and is located below the consumable material tray bracket, and the other end of which, namely, the feeding port of the drying tube assembly is located on the side of the main board where the consumable material tray bracket is not installed, and is located near the top of the main board. The entire spiral drying tube assembly is fixed by a plurality of spiral drying tube assembly fixing seats installed on both sides of the main board, and the spiral drying tube assembly fixing seat has a fixing seat base and a fixing seat top seat, as well as mutually corresponding bolt holes, which are assembled by bolt fastening, and a fixing hole is opened in the middle of the fixing seat base and the fixing seat top seat for fixing the spiral drying tube assembly;

[0008] The spiral drying tube assembly comprises a metal tube, a temperature probe is arranged on the metal tube closely against the outer wall, and a carbon fiber heating wire is spirally wound on the outer wall of the metal tube, and the outer layer of the spirally wound carbon fiber heating wire is wrapped with a layer of insulation tube as a whole; a Teflon feed pipe is arranged in the metal tube, and the Teflon feed pipe passes through a Teflon feed pipe bracket arranged at intervals to maintain a coaxial state with the metal tube;

[0009] The spiral drying tube assembly is a tubular body that is spirally wound for at least one circle, and the inner diameter of the spiral drying tube assembly is larger than the outer diameter of the consumable material disc.

[0010] The carbon fiber heating wire is composed of carbon fiber and Teflon insulation layer;

[0011] The Teflon feeding pipe is composed of a Teflon pipe and a Teflon pipe inner rack arranged in an annular array on its inner wall and arranged in the same axial direction, and a heat exchange vent hole penetrating the Teflon pipe wall is arranged between the Teflon pipe inner racks.

[0012] The Teflon feed pipe support is composed of support legs and a support inner hole arranged on a support annular body;

[0013] The temperature probe interface of the temperature controller is connected to the temperature probe set on the spiral drying tube assembly, the power input interface is connected to the power switch, and the power output interface is connected to the carbon fiber heating wire set on the spiral drying tube assembly, which is used to control the start and stop working state of the carbon fiber heating wire to accurately control the heating temperature of the spiral drying tube assembly.

[0014] The beneficial effects of the provided technical solution include the following aspects:

[0015] The consumables are dried quickly. The consumables are heated by the carbon fiber heating wire spirally wound on the spiral drying tube assembly. The carbon fiber heating wire has the characteristic of fast heating, which can quickly heat the metal tube. After the metal tube is heated, the heat is evenly distributed in all parts of the metal tube. The heat radiation passes through the Teflon feed pipe set in the metal tube, and further surrounds the slowly passing consumables through the heat exchange vents to dry them evenly and quickly without dead ends.

[0016] The water vapor is discharged smoothly. The water vapor generated during the drying process can be easily discharged through the heat exchange vents on the Teflon feed pipe and the Teflon feed pipe bracket;

[0017] Energy saving: the heat preservation layer set on the spiral drying tube assembly can effectively keep the heat and prevent the heat from being lost to the outside, thus effectively reducing energy consumption while ensuring the drying effect;

[0018] Save printing time, only the small section of filaments that will enter the 3D printer is cyclically heated and dried, the heating time is short, and it can be dried while printing, and there is no need to wait for printing;

[0019] Does not affect the quality of consumables. Repeated drying only affects a small amount of consumables in the spiral drying tube assembly, and has no adverse effect on the vast majority of unused consumables in the same roll of consumables.

[0020] The drying process is noiseless because no fan is needed to circulate the hot air and no noise is generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a side view of a spiral tube 3D printing filament dryer;

[0022] Figure 2 This is the rear view of the spiral tube 3D printing filament dryer;

[0023] Figure 3 This is a schematic diagram of the overall effect of the spiral tube 3D printing filament dryer;

[0024] Figure 4 It is a schematic diagram of the side view structure of the spiral drying tube assembly;

[0025] Figure 5 It is a front view structural diagram of the spiral drying tube assembly;

[0026] Figure 6 This is a schematic diagram of the overall effect of the spiral drying tube assembly;

[0027] Figure 7 This is a schematic diagram of the structure of the Teflon feed pipe support;

[0028] Figure 8 It is a schematic diagram of the fixing seat of the spiral drying tube assembly;

[0029] Fig. 9 It is the schematic diagram of the thermostat interface;

[0030] Among them, 1. base; 2. main board; 3. consumable material tray bracket; 4. consumable material tray; 5. consumable wire; 6. spiral drying tube assembly fixing seat; 601. fixing seat base; 602. fixing seat top seat; 603. fixing hole; 604. bolt hole; 605. bolt; 7. spiral drying tube assembly; 701. metal tube; 702. carbon fiber heating wire; 7021. carbon fiber; 7022. Teflon insulation layer; 703. insulation tube; 704. temperature probe; 705. Teflon Feed pipe; 7051, Teflon tube; 7052, rack inside Teflon tube; 7053, heat exchange vent; 7054, Teflon feed pipe bracket; 70511, bracket ring body; 70512, bracket leg; 70513, bracket inner hole; 7061, drying tube assembly inlet; 7062, drying tube assembly outlet; 8, thermostat; 801, temperature probe interface; 802, power input interface; 803, power output interface; 9, power switch; 10, casing. DETAILED DESCRIPTION

[0031] Below is the attached figure Figures 1 to 9 The technical solution of the present invention is further illustrated by specific implementation methods.

[0032] like Figure 1-9As shown, a spiral tube type 3D consumable material drying machine includes a base 1, a main board 2, a consumable material tray bracket 3, a consumable material tray 4, a consumable wire 5, a spiral drying tube assembly fixing seat 6, a spiral drying tube assembly 7, a thermostat 8, a power switch 9 and a shell 10;

[0033] The base 1 is vertically mounted with a mainboard 2, a consumable material tray support 3 is mounted on one side of the mainboard 2, and the base 1 and the mainboard 2 are externally mounted with a housing 10;

[0034] A spiral drying tube assembly 7 is installed on the main board 2, and the spiral drying tube assembly 7 passes through the main board 2. One end, namely, the drying tube assembly inlet 7061, is on the side where the consumable disk bracket 3 is installed, and is located below the consumable disk bracket 3. The other end, namely, the drying tube assembly outlet 7062, is located on the side of the main board where the consumable disk bracket 3 is not installed, and is located near the top of the main board 2. The entire spiral drying tube assembly 7 is fixed by a plurality of spiral drying tube assembly fixing seats 6 installed on both sides of the main board 2. The spiral drying tube assembly fixing seat 6 has a fixing seat base 601 and a fixing seat top seat 602, as well as mutually corresponding bolt holes 604, which are fastened and assembled by bolts 605. A fixing hole 603 is opened between the fixing seat base 601 and the fixing seat top seat 602 to fix the spiral drying tube assembly 7.

[0035] The spiral drying tube assembly 7 includes a metal tube 701, a temperature probe 704 is arranged on the metal tube 701 close to the outer wall, and a carbon fiber heating wire 702 is spirally wound on the outer wall of the metal tube 701, and the outer layer of the spirally wound carbon fiber heating wire 702 is wrapped with a layer of insulation tube 703; a Teflon feed pipe 705 is arranged in the metal tube 701, and the Teflon feed pipe 705 passes through the bracket inner hole 70513 of the Teflon feed pipe bracket 7054 arranged at intervals, and is constrained by the bracket ring body 70511 and the bracket leg 70512 arranged on the Teflon feed pipe bracket 7054 to maintain a coaxial state with the metal tube 701;

[0036] The spiral drying tube assembly 7 is a tubular body that is spirally wound for at least one circle, and the inner diameter of the spiral drying tube assembly 7 is larger than the outer diameter of the consumable material disc 4 .

[0037] The carbon fiber heating wire 702 is composed of a carbon fiber 7021 and a Teflon insulation layer 7022;

[0038] The Teflon feeding pipe 705 is composed of a Teflon tube 7051 and a plurality of Teflon tube inner racks 7052 arranged in a circular array on the inner wall thereof and arranged in the same axial direction. A heat exchange vent hole 7053 penetrating the tube wall of the Teflon tube 7051 is arranged between the Teflon tube inner racks 7052.

[0039] The temperature probe interface 801 of the temperature controller 8 is connected to the temperature probe 704 set on the spiral drying tube assembly 7, the power input interface 802 is connected to the power switch 9, and the power output interface 803 is connected to the carbon fiber heating wire 702 set on the spiral drying tube assembly 7, which is used to control the start and stop working state of the carbon fiber heating wire 702 to accurately control the heating temperature of the spiral drying tube assembly 7.

Claims

1. A spiral tube 3D consumables drying machine, Features: The invention comprises a base (1), a main board (2), a consumable material plate bracket (3), a consumable material plate (4), consumable wire (5), a spiral drying tube assembly fixing seat (6), a fixing seat base (601), a fixing seat top seat (602), a fixing hole (603), a bolt hole (604), a bolt (605), a spiral drying tube assembly (7), a metal tube (701), a carbon fiber heating wire (702), a carbon fiber (7021), a Teflon insulation layer (7022), a heat preservation tube (703), a temperature probe (704), and a Teflon feed pipe. (705), Teflon tube (7051), Teflon tube inner rack (7052), heat exchange vent (7053), Teflon feed pipe bracket (7054), bracket annulus (70511), bracket leg (70512), bracket inner hole (70513), drying tube assembly inlet (7061), drying tube assembly outlet (7062), thermostat (8), temperature probe interface (801), power input interface (802), power output interface (803), power switch (9), housing (10).

2. A spiral tube type 3D consumables drying machine according to claim 1, Features: The main board (2) is provided with a spiral drying tube assembly (7). The spiral drying tube assembly (7) passes through the main board (2). One end of the spiral drying tube assembly, namely the drying tube assembly inlet (7061), is located on the side where the consumable material tray bracket (3) is installed and is located below the consumable material tray bracket (3). The other end of the spiral drying tube assembly, namely the drying tube assembly outlet (7062), is located on the side where the consumable material tray bracket (3) is not installed on the main board (2) and is located near the top of the main board (2). The entire spiral drying tube assembly (7) is fixed by a plurality of spiral drying tube assembly fixing seats (6) installed on both sides of the main board (2). The spiral drying tube assembly fixing seats (6) include a fixing seat base (601) and a fixing seat top seat (602), as well as bolt holes (604) corresponding to each other, and are assembled by fastening with bolts (605). A fixing hole (603) is provided between the fixing seat base (601) and the fixing seat top seat (602) for fixing the spiral drying tube assembly (7).

3. A spiral tube type 3D consumables drying machine according to claim 1, Features: The spiral drying tube assembly (7) comprises a metal tube (701), a temperature probe (704) is arranged on the metal tube (701) in close contact with the outer wall, and a carbon fiber heating wire (702) is spirally wound on the outer wall of the metal tube (701), the outer layer of the spirally wound carbon fiber heating wire (702) is entirely wrapped with a layer of insulation tube (703), and a Teflon feed pipe (705) is arranged in the metal tube (701), and the Teflon feed pipe (705) passes through the inner hole (70513) of the Teflon feed pipe bracket (7054) arranged at intervals, and is constrained by the bracket annulus (70511) and the bracket legs (70512) arranged on the Teflon feed pipe bracket (7054) to maintain a coaxial state with the metal tube (701).

4. A spiral tube type 3D consumables drying machine according to claim 1, Features: The spiral drying tube assembly (7) is a tubular body that is spirally wound for at least one turn, and the inner diameter of the spiral drying tube assembly (7) is greater than the outer diameter of the consumable material disc (4).

5. A spiral tube type 3D consumables drying machine according to claim 1, Features: The carbon fiber heating wire (702) is composed of carbon fiber (7021) and a Teflon insulation layer (7022).

6. A spiral tube type 3D consumables drying machine according to claim 1, Features: The Teflon feed pipe (705) is composed of a Teflon tube (7051) and a plurality of Teflon tube inner racks (7052) arranged in an annular array on the inner wall thereof and arranged in the same axial direction. Heat exchange vents (7053) penetrating the tube wall of the Teflon tube (7051) are arranged between the Teflon tube inner racks (7052).

7. The spiral tube type 3D consumables drying machine according to claim 1, Features: The temperature probe interface (801) of the temperature controller (8) is connected to the temperature probe (704) provided on the spiral drying tube assembly (7), the power input interface (802) is connected to the power switch (9), and the power output interface (803) is connected to the carbon fiber heating wire (702) provided on the spiral drying tube assembly (7), so as to control the start and stop working state of the carbon fiber heating wire (702) so as to accurately control the heating temperature of the spiral drying tube assembly (7).

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