Drying device for 3D printing wires

Abstract

The utility model discloses a drying device for 3D printing wire rods, which belongs to the technical field of 3D printing and comprises a base, a winding mechanism is arranged at the top of the base and comprises racks fixedly connected to the top of the base, a mounting shaft is rotatably connected between the racks, a wire coil is fixedly connected onto the mounting shaft, the wire rods are wound on the wire coil, and the wire rods are wound on the mounting shaft. A winding mechanism is arranged on the rack, two guide mechanisms are arranged on one side of the winding mechanism, a drying mechanism is arranged between the two guide mechanisms, an auxiliary mechanism is arranged above the rack and comprises an abutting assembly connected to the rack through an elastic assembly, the abutting assembly abuts against a wire on a wire coil all the time, and the auxiliary mechanism further comprises an adjusting assembly. The drying device has the beneficial effects that the distance between the abutting assembly and the rack is changed along with gradual release of the wire rod, the wind power of the drying mechanism is adjusted according to the distance change and the adjusting assembly, and the resource utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a drying device for 3D printing filament. Background Technology

[0002] 3D printing is a technology that uses digital model files as a basis and employs powdered metal or plastic and other bondable materials to construct objects layer by layer. 3D printing is often used in mold making, industrial design and other fields to create models, and is gradually being used for the direct manufacturing of some products. When consumables are stored, they will absorb moisture from the air to some extent and become damp. When undried plastic raw materials are used directly for printing, the moisture in the printing filament will quickly vaporize when heated in the high-temperature nozzle, causing the molten filament to expand, flow faster and produce pores. This will result in the printed parts having problems such as stringing, material leakage, holes, rough surfaces and low strength. Therefore, the printing filament must be dried before it melts.

[0003] A search of Chinese Patent Publication No. CN221717853U reveals a drying device for 3D printing filament, comprising a placement plate, a drying chamber fixedly mounted on the placement plate, a filament inlet on one side of the drying chamber, and a filament outlet on the other side of the drying chamber corresponding to the filament inlet. The device also includes a dehydration assembly, comprising a support plate fixedly mounted on the placement plate, a rotating roller rotatably mounted on the support plate, and dehydrating cotton sleeved on the outside of the rotating roller. After the printing filament is dehydrated by the dehydrating cotton, it enters the drying chamber through the filament inlet. The filament is further dried by blowing air onto it, and the dried filament is collected through the filament outlet to a collection assembly.

[0004] Most existing drying devices dry wires by blowing air. During the drying process, the air force of the fan is constant. However, the degree of moisture absorption of the wire wound on the winding roller gradually decreases as the distance between the wire and the winding roller decreases. Using a constant air force for drying may lead to resource waste in the later stages. Utility Model Content

[0005] The purpose of this invention is to provide a drying device for 3D printing filaments in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A drying device for 3D printing filament includes a base, a winding mechanism on the top of the base, a frame fixedly connected to the top of the base, a mounting shaft rotatably connected between the frames, a filament spool fixedly connected to the mounting shaft, filament wound on the spool, two sets of guide mechanisms on one side of the winding mechanism, a drying mechanism between the two sets of guide mechanisms, and an auxiliary mechanism above the frame. The auxiliary mechanism includes an abutment component connected to the frame via an elastic component, the abutment component always abutting against the filament on the spool, and an adjustment component for adjusting the airflow of the drying mechanism according to changes in the distance between the abutment component and the frame.

[0008] Preferably, the abutting component includes a top plate, the bottom of which has an installation cavity, and a rotating roller is rotatably connected inside the installation cavity, the rotating roller abutting against the wire on the wire spool.

[0009] Preferably, the elastic component includes a slide rod that slides up and down along the frame, the bottom end of the slide rod extends out of the frame and is fixedly connected to a top plate, a spring is fixedly connected between the top plate and the inner top wall of the frame, the spring is wound around the outer periphery of the slide rod, and the top end of the slide rod extends out of the frame and is fixedly connected to a limit plate.

[0010] Preferably, the drying mechanism includes a fan fixedly connected to the top of the base, an air outlet fixedly connected to an air outlet pipe, a drying pipe fixedly connected to the other end of the air outlet pipe, a wire passing through the drying pipe, and several circumferentially arranged air outlet nozzles fixedly connected to the inner wall of the drying pipe.

[0011] Preferably, the adjustment component includes a sliding rheostat fixedly connected to the top of the frame, the sliding slider of the sliding rheostat is fixedly connected to the limiting plate, the sliding rheostat is electrically connected to the fan, and the sliding rheostat and the fan are connected in series, so that the resistance of the sliding rheostat connected in the circuit increases when the sliding slider moves downward.

[0012] Preferably, a protective cover is fixedly connected to the top of the frame. The protective cover is made of insulating material, the sliding rheostat is located inside the protective cover, and a notch is opened on the side of the protective cover near the limiting plate.

[0013] Preferably, the guiding mechanism includes two mounting blocks arranged symmetrically front to back, with mounting grooves on the sides of the mounting blocks that are close to each other, and guide wheels rotatably connected in the mounting grooves, through which the wire passes.

[0014] The beneficial effects are as follows: as the wire is gradually released, the distance between the contact component and the frame changes. Based on the change in distance, the airflow of the drying mechanism is adjusted by the regulating component, thereby improving resource utilization.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a drying device for 3D printing filaments according to the present invention;

[0018] Figure 2 This is a top view of a drying device for 3D printing filaments according to the present invention;

[0019] Figure 3 This is a left view of the winding mechanism and auxiliary mechanism of the 3D printing filament drying device described in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the drying tube of a drying device for 3D printing filaments according to the present invention;

[0021] Figure 5 This is a side view of the guide mechanism of a drying device for 3D printing filaments according to the present invention.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Base; 201. Frame; 202. Mounting shaft; 203. Wire reel; 204. Wire; 301. Mounting block; 302. Guide wheel; 401. Fan; 402. Air outlet pipe; 403. Drying pipe; 404. Air outlet nozzle; 501. Slide rod; 502. Top plate; 503. Rotating roller; 504. Spring; 505. Limiting plate; 506. Protective cover; 507. Sliding rheostat; 508. Moving slide plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-5 As shown, a drying device for 3D printing filament includes a base 1, a winding mechanism is provided on the top of the base 1, the winding mechanism includes a frame 201 fixedly connected to the top of the base 1, the frame 201 is U-shaped with the opening facing downward, a mounting shaft 202 is rotatably connected between the frames 201, a filament reel 203 is fixedly connected to the mounting shaft 202, and filament 204 is wound on the filament reel 203.

[0027] Two sets of guiding mechanisms are provided on one side of the winding mechanism. The guiding mechanism includes two mounting blocks 301 arranged symmetrically front and back. The mounting blocks 301 have mounting grooves on their sides that are close to each other. Guide wheels 302 are rotatably connected in the mounting grooves. The wire 204 passes between the two guide wheels 302 and is guided by the two sets of guiding mechanisms.

[0028] A drying mechanism is provided between the two sets of guiding mechanisms. The drying mechanism includes a fan 401 fixedly connected to the top of the base 1. An air outlet 402 is fixedly connected to the air outlet of the fan 401. A drying tube 403 is fixedly connected to the other end of the air outlet 402. A wire 204 passes through the drying tube 403. Several circumferentially arranged air outlet nozzles 404 are fixedly connected to the inner wall of the drying tube 403.

[0029] An auxiliary mechanism is provided above the frame 201. The auxiliary mechanism includes an abutment component connected to the frame 201 by an elastic component. The abutment component is always in contact with the wire 204 on the wire reel 203. The abutment component includes a top plate 502. The bottom of the top plate 502 has an installation cavity. A rotating roller 503 is rotatably connected in the installation cavity. The rotating roller 503 abuts with the wire 204 on the wire reel 203. The rotating roller 503 reduces the friction between the top plate 502 and the wire 204, thereby reducing the wear on the wire 204. In the initial state, the rotating roller 503 is located below the axis of the wire reel 203.

[0030] The elastic component includes a slide rod 501 that slides up and down along the frame 201. The bottom end of the slide rod 501 extends out of the frame 201 and is fixedly connected to the top plate 502. A spring 504 is fixedly connected between the top plate 502 and the inner top wall of the frame 201. The spring 504 is wrapped around the outer periphery of the slide rod 501. The top end of the slide rod 501 extends out of the frame 201 and is fixedly connected to the limit plate 505.

[0031] The auxiliary mechanism also includes an adjustment component, which is used to adjust the airflow of the drying mechanism according to the change in the distance between the contact component and the frame 201. The adjustment component includes a sliding rheostat 507 fixedly connected to the top of the frame 201. The sliding slider 508 of the sliding rheostat 507 is fixedly connected to the limiting plate 505. The sliding rheostat 507 is electrically connected to the fan 401. The sliding rheostat 507 and the fan 401 are connected in series, so that when the sliding slider 508 moves downward, the resistance of the sliding rheostat 507 connected in the circuit increases.

[0032] A protective cover 506 is fixedly connected to the top of the frame 201. The protective cover 506 is made of insulating material. The sliding rheostat 507 is located inside the protective cover 506. A notch is opened on the side of the protective cover 506 near the limiting plate 505 to improve the protective performance.

[0033] Working principle: During use, the wire 204 passes between the two guide wheels 302 of the guide mechanism and enters the drying tube 403. Then it passes between the two guide wheels 302 of another set of guide mechanisms. The fan 401 is started, and the air is delivered to the drying tube 403 through the air outlet 402. Then it is blown out of the wire 204 from multiple directions through several air outlet nozzles 404 to dry the wire 204. As the wire 204 is gradually released, the top plate 502 gradually moves downward under the action of the spring 504. The top plate 502 drives the slide rod 501 to move the limit plate 505 downward. The limit plate 505 drives the sliding slider 508 of the sliding rheostat 507 to move downward, increasing the resistance in the circuit, thereby reducing the current in the circuit, reducing the wind power of the fan 401, and improving resource utilization.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drying device for 3D printing filament, comprising a base (1), a winding mechanism being provided on the top of the base (1), the winding mechanism comprising a frame (201) fixedly connected to the top of the base (1), a mounting shaft (202) being rotatably connected between the frames (201), a filament reel (203) being fixedly connected to the mounting shaft (202), filament (204) being wound on the filament reel (203), two sets of guiding mechanisms being provided on one side of the winding mechanism, and a drying mechanism being provided between the two sets of guiding mechanisms, characterized in that: An auxiliary mechanism is provided above the frame (201). The auxiliary mechanism includes an abutment component connected to the frame (201) by an elastic component. The abutment component is always in contact with the wire (204) on the wire reel (203). The auxiliary mechanism also includes an adjustment component, which is used to adjust the airflow of the drying mechanism according to the change in the distance between the abutment component and the frame (201).

2. The drying device for 3D printing filaments according to claim 1, characterized in that: The abutting component includes a top plate (502), the bottom of which has an installation cavity, and a rotating roller (503) is rotatably connected inside the installation cavity. The rotating roller (503) abuts against the wire (204) on the wire spool (203).

3. The drying device for 3D printing filaments according to claim 2, characterized in that: The elastic component includes a slide rod (501) that slides up and down along the frame (201). The bottom end of the slide rod (501) extends out of the frame (201) and is fixedly connected to the top plate (502). A spring (504) is fixedly connected between the top plate (502) and the inner top wall of the frame (201). The spring (504) is wrapped around the outer periphery of the slide rod (501). The top end of the slide rod (501) extends out of the frame (201) and is fixedly connected to a limit plate (505).

4. A drying device for 3D printing filaments according to claim 3, characterized in that: The drying mechanism includes a fan (401) fixedly connected to the top of the base (1), an air outlet pipe (402) fixedly connected to the air outlet of the fan (401), a drying pipe (403) fixedly connected to the other end of the air outlet pipe (402), a wire (204) passing through the drying pipe (403), and a plurality of circumferentially arranged air outlet nozzles (404) fixedly connected to the inner wall of the drying pipe (403).

5. A drying device for 3D printing filaments according to claim 4, characterized in that: The adjustment assembly includes a sliding rheostat (507) fixedly connected to the top of the frame (201). The sliding slider (508) of the sliding rheostat (507) is fixedly connected to the limiting plate (505). The sliding rheostat (507) is electrically connected to the fan (401). The sliding rheostat (507) and the fan (401) are connected in series, so that when the sliding slider (508) moves downward, the resistance of the sliding rheostat (507) connected to the circuit increases.

6. A drying device for 3D printing filaments according to claim 5, characterized in that: A protective cover (506) is fixedly connected to the top of the frame (201). The protective cover (506) is made of insulating material. The sliding rheostat (507) is located inside the protective cover (506). A notch is provided on the side of the protective cover (506) near the limiting plate (505).

7. A drying device for 3D printing filaments according to claim 1, characterized in that: The guiding mechanism includes two mounting blocks (301) arranged symmetrically front to back. The mounting blocks (301) have mounting grooves on their sides that are close to each other. Guide wheels (302) are rotatably connected in the mounting grooves. The wire (204) passes between the two guide wheels (302).

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