Heating device for 3D printing consumable storage box

Abstract

The utility model discloses a heating device for a 3D printing consumable storage box. The heating device comprises an installation box, an air inlet assembly and a hot air assembly. The air inlet assembly comprises a top cover; the hot air assembly comprises a first fan, a heater, a front plate, a fan cover and a second fan. The mounting box is inserted into a box cover of the storage box; an air inlet is formed in the rear end of the mounting box; the top cover is mounted in the air inlet; an air outlet is reserved between the bottom edge of the front plate and the bottom edge of the front end of the mounting box and faces the consumable surface close to the rear wall of the storage cavity; the first fan and the heater are installed on the rear plate face of the front plate, an air outlet of the first fan communicates with the air inlet end of the heater, and the air outlet end of the heater faces downwards and communicates with the air outlet hole. The fan cover is clamped on the front plate surface of the front plate; the second fan is mounted in a top port of the fan cover; an air outlet gap is reserved between the bottom edge of the fan cover and the front plate face of the front plate and is adjacent to the air outlet hole in a front-back mode. And the air heated by the heater forms hot air flow which circularly flows along the peripheral surface of the consumable coil stock.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field especially relates to a kind of heating device for 3D printing consumable storage box. BACKGROUND

[0002] Fused deposition is the most popular 3D printing process in the prior art, and the consumable used is a thermoplastic wire wound around the outer periphery of a circular reel.

[0003] In the prior art 3D printing process, if the consumable is exposed to room temperature air, it is prone to moisture absorption. Moisture absorption increases the moisture content in the consumable, which can cause the consumable to become brittle during drying and forming after 3D printing, and is prone to breakage. Therefore, the consumable roll needs to be heated before printing to avoid moisture absorption.

[0004] A 3D printing consumable drying box is disclosed in Chinese Utility Model Patent No. CN15396247U, in which a heating fan is installed at one end of the shaft of a circular consumable reel. The output hot air is blown onto the side surface of the consumable reel, and the hot air is blown onto the surface of the consumable roll after rebounding. This cannot heat the peripheral surface of the consumable roll wound on the consumable reel, resulting in uneven temperature distribution of the consumable roll and affecting the heating and drying effect of the consumable roll. SUMMARY

[0005] To overcome the above-mentioned shortcomings, the present utility model provides a heating device for a 3D printing consumable storage box to solve the problem of uneven temperature distribution after heating the consumable roll.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A heating device for a 3D printing consumable storage box for drying consumable rolls in the storage cavity of the storage box, comprising a mounting box, an air inlet assembly and a hot air assembly;

[0008] The air inlet assembly comprises a top cover, and the hot air assembly comprises a first fan, a heater, a front plate, a fan cover and a second fan;

[0009] The mounting box is used for inserting into the box cover of the storage box, and the rear end of the mounting box is used for exposing behind the box cover. The rear end of the mounting box is provided with an air inlet hole, and the front end of the mounting box is open;

[0010] The top cover is hingedly installed in the air inlet hole. The front plate is fixed and covers the opening. The bottom edge of the front plate and the front end bottom edge of the mounting box are provided with an air outlet hole, which is used for downwardly directing the surface of the consumable close to the rear wall of the storage cavity;

[0011] The first fan and the heater are installed adjacently on the back plate surface of the front plate, the air outlet of the first fan is communicated with the air inlet of the heater, and the air outlet of the heater is downward and communicated with the air outlet hole;

[0012] The fan cover is hollow, is clamped on the front plate surface of the front plate, the second fan is installed in the top port of the fan cover, and an air outlet gap is left between the bottom edge of the fan cover and the front plate surface of the front plate, and the air outlet gap is adjacent to the air outlet hole in front and back.

[0013] Further, two corner portions of the upper end of the front plate are provided with exhaust holes;

[0014] The exhaust holes penetrate the plate surface of the front plate, and the exhaust holes are located on the side of the fan cover.

[0015] Further, the front plate is further provided with a flow guide groove;

[0016] The flow guide groove is recessed from back to front on the plate surface of the front plate, the upper end of the flow guide groove abuts against the bottom edge of the fan cover, and the gap between the bottom edge of the fan cover, the front end surface of the fan cover and the front plate surface of the front plate forms the air outlet gap;

[0017] The gap between the inner side surface of the bottom end of the flow guide groove and the front end bottom edge of the mounting box forms the air outlet hole.

[0018] Further, the air inlet assembly further comprises a sealing ring;

[0019] The sealing ring is installed on the bottom surface of the top cover and surrounds the inner side of the edge of the top cover, and the sealing ring is used for sealing the gap between the top cover and the air inlet hole.

[0020] Further, the mounting box is further provided with a receiving groove;

[0021] The receiving groove surrounds the inner side of the edge of the air inlet hole, and the receiving groove is used for receiving the sealing ring.

[0022] Further, the edge of the air inlet hole is provided with exhaust grooves on the left and right sides;

[0023] The exhaust grooves extend in the front and back directions, and the front ends of the exhaust grooves are communicated with the exhaust holes;

[0024] The exhaust grooves are located on the inner side of the receiving groove.

[0025] Further, the bottom surface of the top cover is provided with lower edge portions on the left and right sides;

[0026] The upper end of the lower edge part is connected with the bottom surface of the top cover, and the lower edge part extends downward;

[0027] The outer side surface of the lower edge part abuts against the inner side edge of the exhaust hole, and the lower edge part blocks the inner side of the exhaust groove.

[0028] Further, the mounting box is also provided with a notch;

[0029] The notch is located at the front end bottom edge of the mounting box and is recessed backward to the front end bottom edge of the mounting box; the notch and the lower end of the flow guide groove enclose the air outlet hole;

[0030] The width of the air outlet hole matches the axial width of the consumable roll.

[0031] Further, the air inlet hole, the inner cavity of the mounting box, the chamber where the fan blades of the first fan are located, the heating channel of the heater, the rear plate surface of the front plate and the notch form an air inlet channel.

[0032] The beneficial effects of the technical scheme of the utility model are that the heating device for the 3D printing consumable storage box can make the air from the outside enter the electric heater through the air inlet hole and the first fan, form hot air flow through heating and discharge from the air outlet end of the electric heater, the air outlet hole faces the surface of the consumable close to the rear wall of the storage cavity in the tangential direction, the air flow output by the second fan flows out from the air outlet gap downward and forms a pushing action on the hot air flow discharged from the air outlet, so that the flow rate of the hot air flow along the surface of the consumable with the circumferential surface is supplemented and accelerated, and the hot air flow circulates along the gap between the outer circumferential surface of the consumable roll and the inner wall of the storage cavity; the temperature of the surface of the consumable can be well and uniformly distributed, the consumable can be prevented from being damp and the printing quality of the consumable can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structural schematic view of one embodiment of the heating device for the 3D printing consumable storage box of the utility model;

[0034] Figure 2 It is a schematic view of parts of one embodiment of the heating assembly;

[0035] Figure 3 It is a mounting structure schematic view of one embodiment of the mounting box and the fixing plate;

[0036] Figure 4 It is a structural schematic view of one embodiment of the storage box provided with the heating device;

[0037] Wherein: installation box 1, air inlet assembly 2, hot air assembly 3, bottom box 4, box cover 5, consumable reel 6, air inlet hole 11, air outlet groove 12, open mouth 13, storage groove 14, groove 15, top cover 21, sealing ring 22, first fan 31, heater 32, front plate 33, fan cover 34, second fan 35, storage cavity 41, lower edge 211, air outlet hole 331, flow guide groove 332. DETAILED DESCRIPTION

[0038] The technical scheme of the present application will be further described below in combination with the accompanying drawings. Figures 1-4 The technical scheme of the present application will be further described below in combination with the accompanying drawings.

[0039] The accompanying drawings are only used for illustrative description and should not be understood as a limitation of the present application; in order to better illustrate the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0040] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be said that the two elements are connected internally. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] A heating device for a 3D printing consumable storage box, used for drying the consumable roll 6 in the storage cavity 41 of the storage box, comprising an installation box 1, an air inlet assembly 2 and a hot air assembly 3;

[0042] The air inlet assembly 2 comprises a top cover 21; the hot air assembly 3 comprises a first fan 31, a heater 32, a front plate 33, a fan cover 34 and a second fan 35;

[0043] The installation box 1 is used for being inserted into the box cover 5 of the storage box, and the rear end of the installation box 1 is used for being exposed behind the box cover 5; the rear end of the installation box 1 is provided with an air inlet hole 11, and the front end of the installation box 1 is an open mouth 13;

[0044] The top cover 21 is hingedly mounted on the air inlet hole 11; the front plate 33 is fixed and covers the open mouth 13, and an air outlet hole is left between the bottom edge of the front plate 33 and the front end bottom edge of the installation box 1, which is used for downwardly directing to the surface of the consumable close to the rear wall of the storage cavity 41;

[0045] The first fan 31 and the heater 32 are installed adjacently on the back plate surface of the front plate 33, the air outlet of the first fan 31 is communicated with the air inlet of the heater 32, and the air outlet of the heater 32 is downward and communicated with the air outlet hole;

[0046] The fan cover 34 is hollow, is clamped on the front plate surface of the front plate 33, the second fan 35 is installed in the top port of the fan cover 34, and the bottom edge of the fan cover 34 is left with an air outlet gap between the front plate surface of the front plate 33, and the air outlet gap is adjacent to the air outlet hole in front and back.

[0047] As shown in Figure 1 It is an embodiment structure schematic view of the heating device for the 3D printing consumable storage box. Figure 4 It is an embodiment structure schematic view of the storage box provided with the heating device, the storage box comprises a bottom box 4 and a box cover 5, the bottom box 4 is provided with a storage cavity 41, the storage cavity 41 is provided with a consumable reel 6, and the rear end of the installation box 1 is exposed to the rear end surface of the box cover 5.

[0048] The first fan 31 is preferably a vortex fan, and the heater 32 is preferably a PTC heater.

[0049] As shown in Figure 1 And Figure 2 The working principle of the heating device is as follows:

[0050] Before the 3D printer works, the cover plate 21 is lifted, the first fan 31, the electric heater 32 and the second fan 35 in the heating assembly 3 are started, the air entering from the outside is introduced into the electric heater 32 through the air inlet hole 11 and the first fan 31, the heated air forms a hot air flow and is discharged from the air outlet end of the electric heater 32, the air outlet hole is downward along the tangent direction and faces the consumable surface close to the rear wall of the storage cavity 41, the air flow output by the second fan 35 flows out from the air outlet gap downward, and the hot air flow discharged from the air outlet forms a pushing action, so that the flow rate of the hot air flow along the circumferential surface of the consumable is supplemented and accelerated, and the hot air flow circulates along the gap between the outer circumferential surface of the consumable reel 6 and the inner wall of the storage cavity 41; the circulating hot air flow can make the temperature of the consumable surface have good distribution uniformity, when the consumable is heated by the circulating hot air flow for a period of time, the 3D printer is started again, and the consumable can be prevented from being damp and the printing quality of the consumable can be improved.

[0051] Further, two corner portions of the upper end of the front plate 33 are provided with exhaust holes 331;

[0052] The exhaust holes 331 penetrate the plate surface of the front plate 33, and the exhaust holes 331 are located on the side of the fan cover 34.

[0053] As shown in Figure 2 and Figure 3 , the water vapor generated by the heating of the consumables can be discharged outward through the exhaust holes 331 located at the two corners of the upper end of the front plate 33.

[0054] Further, the front plate 33 is also provided with a flow guide groove 332.

[0055] The flow guide groove 332 is recessed from the surface of the front plate 33 from back to front, and the upper end of the flow guide groove 332 abuts against the bottom edge of the fan cover 34. The gap between the bottom edge of the fan cover 34, the front end surface of the fan cover 34 and the surface of the front plate 33 forms the air outlet gap.

[0056] The gap between the inner side surface of the lower end of the bottom of the flow guide groove 332 facing the heater 32 and the front end bottom edge of the installation box 1 forms the air outlet hole.

[0057] As shown in Figure 2 and Figure 3 , the distribution width of the hot air flow discharged through the air outlet hole can be defined by the flow guide groove 332, so that the air flow output by the second fan 35 flows downward along the front side of the flow guide groove 332 and merges with the hot air flow output by the heater 32, thereby improving the circulating flow rate of the hot air flow.

[0058] Further, the air inlet assembly 2 further comprises a sealing ring 22.

[0059] The sealing ring 22 is installed on the bottom surface of the top cover 21 and surrounds the inner side of the edge of the top cover 21. The sealing ring 22 is used to seal the gap between the top cover 21 and the air inlet hole 11.

[0060] As shown in Figure 1 and Figure 2 , when the heating device stops working, the sealing ring 22 seals the air inlet hole 11 when the top cover 21 is closed, so that the external air cannot enter the storage box through the air inlet hole 11, thereby preventing the consumables in the storage box from being damp.

[0061] Further, the installation box 1 is also provided with a receiving groove 14.

[0062] The receiving groove 14 surrounds the inner side of the edge of the air inlet hole 11, and the receiving groove 14 is used to accommodate the sealing ring 22.

[0063] As shown in Figure 1 and Figure 3 , the receiving groove 14 for accommodating the sealing ring 22 is arranged on the inner side of the edge of the air inlet hole 11, which can improve the sealing performance of the top cover 21 when closing the air inlet hole 11.

[0064] Further, the left and right sides of the edge of the air inlet hole 11 are provided with exhaust grooves 12;

[0065] The exhaust grooves 12 extend in the front-rear direction, and the front ends of the exhaust grooves 12 are in communication with the exhaust through holes 331.

[0066] The exhaust grooves 12 are located on the inner side of the receiving groove 14.

[0067] As shown in Figure 1 and Figure 3 The exhaust grooves 12 are arranged so that when the top cover 21 is closed and sealed with the air inlet hole 11, the exhaust grooves 12 can be closed synchronously to avoid the infiltration of external humid air into the storage box through the exhaust through holes 331.

[0068] Further, the left and right sides of the bottom surface of the top cover 21 are provided with lower edge portions 211;

[0069] The upper end of the lower edge portion 211 is connected to the bottom surface of the top cover 21, and the lower edge portion 211 extends downward;

[0070] The outer side surface of the lower edge portion 211 abuts against the inner side edge of the exhaust through hole 331, and the lower edge portion 211 blocks the inner side of the exhaust groove 12.

[0071] As shown in Figure 1 and Figure 4 When the heating device is working, the top cover 21 is raised and the outer side surface of the lower edge portion 211 abuts against the inner side edge of the exhaust through hole 331, the airflow flowing into the installation box 1 passes between the two lower edge portions 211, and the water vapor discharged from the exhaust groove 12 passes outside the lower edge portion 211, which can avoid the water vapor being entrained by the airflow flowing into the air inlet hole 11 and entering the installation box 1.

[0072] Further, the installation box 1 is also provided with a slot 15;

[0073] The slot 15 is located at the front end bottom edge of the installation box 1 and is recessed backward on the front end bottom edge of the installation box 1; the slot 15 and the lower end of the flow guide groove 332 form the air outlet hole;

[0074] The width of the air outlet hole matches the axial width of the consumable roll 6.

[0075] As shown in Figure 3 The air outlet hole formed by the slot 15 and the lower end of the flow guide groove 332 and matching the axial width of the consumable roll 6 can improve the uniformity and efficiency of the heating of the consumable by the hot airflow.

[0076] Furthermore, the air inlet 11, the inner cavity of the mounting box 1, the chamber where the fan blades of the first fan 31 are located, the heating channel of the heater 32, the rear plate surface of the front plate 33, and the slot 15 form an air inlet channel.

[0077] like Figure 3 As shown, the air inlet 11, the inner cavity of the mounting box 1, the chamber where the fan blades of the first fan 31 are located, the heating channel of the heater 32, the rear plate surface of the front plate 33 and the slot 15 form an air inlet channel, which is closed by the top cover 21 when the 3D printer is not in use, so as to prevent the infiltration of the outside air from affecting the humidity of the consumables in the storage box.

[0078] In summary, such as Figures 1-4 In the embodiment of this utility model shown, the heating device for the 3D printing consumable storage box allows air entering from the outside to be heated to form a hot airflow, which is then discharged from the air outlet of the electric heater 32. The air outlet faces downwards along the tangential direction toward the consumable surface near the rear wall of the storage cavity 41. The airflow output by the second fan 35 flows downwards through the air outlet gap and pushes the hot airflow discharged from the air outlet, thus supplementing and accelerating the flow velocity of the hot airflow along the circumferential surface of the consumable. This allows the hot airflow to circulate along the gap between the outer circumferential surface of the consumable reel 6 and the inner wall of the storage cavity 41. This ensures that the temperature distribution of the consumable surface is well uniform, preventing the consumable from getting damp and improving the printing quality of the consumable.

[0079] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A heating device for a 3D printing filament storage box, used to dry the filament roll in the storage cavity of the storage box, characterized in that, Includes mounting box, air intake assembly, and hot air assembly; The air intake assembly includes a top cover; the hot air assembly includes a first fan, a heater, a front panel, a fan cover, and a second fan. The mounting box is used to insert into the lid of the storage box, and the rear end of the mounting box is exposed behind the lid; the rear end of the mounting box is provided with an air inlet, and the front end of the mounting box is open. The top cover is detachably mounted on the air inlet; the front plate is fixed and covers the opening, and an air outlet is provided between the bottom edge of the front plate and the bottom edge of the front end of the mounting box. The air outlet is directed downward toward the consumable surface near the rear wall of the storage chamber. The first fan and the heater are mounted adjacent to each other on the rear panel of the front panel. The air outlet of the first fan is connected to the air inlet of the heater, and the air outlet of the heater faces downward and is connected to the air outlet. The fan cover is hollow; the fan cover is snapped onto the front panel of the front plate; the second fan is installed inside the top port of the fan cover; there is an air outlet gap between the bottom edge of the fan cover and the front panel of the front plate, and the air outlet gap is adjacent to the air outlet hole.

2. The heating device for a 3D printing consumable storage box according to claim 1, characterized in that, The two corners at the upper end of the front panel are provided with exhaust vents; The exhaust vent extends through the surface of the front panel and is located beside the fan shroud.

3. The heating device for a 3D printing consumable storage box according to claim 2, characterized in that, The front panel is also provided with a flow guide groove; The air guide groove is recessed from back to front on the surface of the front plate, and the upper end of the air guide groove abuts against the bottom edge of the fan shroud. The gap between the bottom edge of the fan shroud, the front end face of the fan shroud, and the front plate surface of the front plate forms the air outlet gap. The air outlet is formed by the gap between the lower bottom of the guide channel facing the inner side of the heater and the bottom front edge of the mounting box.

4. The heating device for a 3D printing consumable storage box according to claim 2, characterized in that, The air intake assembly also includes a sealing ring; The sealing ring is installed on the bottom surface of the top cover and surrounds the inner side of the edge of the top cover. The sealing ring is used to seal the gap between the top cover and the air inlet.

5. The heating device for a 3D printing consumable storage box according to claim 4, characterized in that, The mounting box is also equipped with a storage slot; The storage groove surrounds the inner edge of the air inlet and is used to store the sealing ring.

6. The heating device for a 3D printing consumable storage box according to claim 5, characterized in that, Exhaust grooves are provided on both the left and right sides of the edge of the air inlet. The exhaust groove extends in the front-to-back direction, and the front end of the exhaust groove is connected to the exhaust through hole; The venting channel is located inside the receiving channel.

7. The heating device for a 3D printing consumable storage box according to claim 6, characterized in that, The bottom surface of the top cover has a lower edge on both the left and right sides; The upper end of the lower edge is connected to the bottom surface of the top cover, and the lower edge extends downward; The outer side of the lower edge abuts against the inner edge of the exhaust port, and the lower edge covers the inner side of the exhaust groove.

8. The heating device for a 3D printing consumable storage box according to claim 3, characterized in that, The mounting box is also provided with a slot; The slot is located at the bottom front edge of the mounting box and is recessed backward into the bottom front edge of the mounting box; the slot and the lower end of the guide groove enclose each other to form the air outlet. The width of the air outlet is matched with the axial width of the consumable roll.

9. The heating device for a 3D printing consumable storage box according to claim 8, characterized in that, The air inlet, the inner cavity of the mounting box, the chamber where the fan blades of the first fan are located, the heating channel of the heater, the rear panel of the front plate, and the slot form an air inlet channel.

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