Portable extrusion head device

Abstract

The utility model discloses a portable extrusion head device which comprises an extrusion head main body, and a radiating fin is arranged in the middle of the extrusion head main body; the LED lamp further comprises a connecting assembly which is arranged outside the cooling fins, the connecting assembly is composed of an air cooling part and a connecting part, and the cooling fins are half wrapped with the air cooling part. The connecting part is integrally formed on the outer surface of the air cooling part, the connecting part is communicated with the inner area of the air cooling part, and the connecting part is communicated with an external cooling fan through a hose; according to the design, the air pipe connecting piece is additionally arranged outside the extrusion head, and the extrusion head is separated from the cooling fan, so that the overall weight of the extrusion head is remarkably reduced, the 3D printer is more stable and efficient in the operation process, meanwhile, a larger degree of freedom is provided for selection of the cooling fan, larger air volume can be provided, and the service life of the 3D printer is prolonged. A more efficient heat dissipation effect is achieved, and meanwhile the operation noise can be remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to 3D printer technical field, concretely relates to a device of portable extrusion head. BACKGROUND

[0002] The extrusion head of the 3D printer is the core component in the 3D printing forming process, which fully melts the imported wire material and continuously and stably extrudes it in the form of a very thin wire from the nozzle for the layer-by-layer accumulation forming of 3D printing. The extrusion head is usually composed of a tube body, a throat pipe, a heat dissipation part, a heating aluminum block, a nozzle, a thermistor, a heating rod and the like, and the heat dissipation part of the 3D printer extrusion head is mainly used to control the temperature of the extrusion head to ensure its operation within a suitable range.

[0003] In the current 3D printing technology, the structure design of the 3D printer extrusion head is relatively compact, and the specification of the heat dissipation fan that can be installed is often limited, so it is not possible to randomly select a larger size fan to improve the heat dissipation effect. This limitation affects the heat dissipation performance to some extent, so that the extrusion head may face the risk of overheating during long-time high-load operation, in addition, due to the relatively large overall weight of the extrusion head, this also increases the operation burden of the 3D printer to some extent, and may affect the printing accuracy and stability. At the same time, the noise generated by the existing heat dissipation fan during operation is also large. UTILITARIAN CONTENT

[0004] The utility model aims at providing a device of portable extrusion head to solve the problems of the extrusion head of the existing 3D printer that cannot be equipped with a larger specification heat dissipation fan, the extrusion head being too heavy and affecting the service life, and the problem of large operation noise.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device of portable extrusion head, comprising an extrusion head main body, a heat dissipation fin is arranged at the middle part of the extrusion head main body; further comprising a connecting assembly arranged outside the heat dissipation fin, the connecting assembly is composed of a forced air cooling part and a connecting part, wherein the forced air cooling part is semi-wrapped outside the heat dissipation fin; and the connecting part is integrally formed on the outer surface of the forced air cooling part, the connecting part and the internal area of the forced air cooling part are in communication, the connecting part is communicated with the external heat dissipation fan through a hose, when the temperature of the extrusion head main body is cooled and controlled, the external heat dissipation fan blows air to the connecting part, then the air cools the surface of the heat dissipation fin through the forced air cooling part.

[0006] Preferably, the air cooling part is a trachea connecting piece composed of a main connecting block and an auxiliary connecting block; a clamping groove is formed at the upper and lower ends of the inner walls of the main connecting block and the auxiliary connecting block, and the clamping groove is clamped into the cooling fin, so that the trachea connecting piece and the cooling fin are mounted; a ring groove is further formed in the middle region of the main connecting block and the auxiliary connecting block, and the ring groove can better realize heat dissipation of the cooling fin when external wind enters.

[0007] Preferably, a placement hole is formed in the abutting surface of the main connecting block and the auxiliary connecting block, and a tension spring is arranged in the placement hole; the tension spring can realize connection of the main connecting block and the auxiliary connecting block, and can tightly abut the main connecting block and the auxiliary connecting block in opposite directions when the main connecting block and the auxiliary connecting block are assembled with the cooling fin, so that stable mounting is realized, and the main connecting block and the auxiliary connecting block are convenient to disassemble.

[0008] Preferably, screw holes are formed in the upper and lower end surfaces of the main connecting block and the auxiliary connecting block, the screw holes are in communication with the placement holes, and a bolt is screwed into the inside of the screw hole; the bottom end of the bolt is embedded into the inside of the tension spring in a spiral manner, so that the tension spring is limited, and separation of the tension spring from the main connecting block and the auxiliary connecting block is avoided.

[0009] Preferably, the connecting part is a plurality of connecting heads in communication with the main connecting block, so that external wind can directly blow into the ring groove from the ring groove, and cooling of the cooling fin is realized.

[0010] Preferably, the connecting head is located at the center position of the trachea connecting piece, and the horizontal projection of the connecting head is located in the region of the ring groove.

[0011] Preferably, the inner side of the trachea connecting piece is arc-shaped, and the center of the arc-shaped trachea connecting piece is coincident with the axis of the extrusion head body.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] Through the design of the utility model, the trachea connecting piece is additionally arranged outside the extrusion head, the extrusion head is separated from the cooling fan, the overall weight of the extrusion head is significantly reduced, the 3D printer is more stable and efficient during operation, the selection of the cooling fan is provided with greater freedom, greater air volume can be provided, higher heat dissipation efficiency is realized, the operation noise is significantly reduced, and the service life of the extrusion head is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1It is a structural diagram of the utility model;

[0015] Fig. 2 This is a schematic structural diagram of the trachea connector of the utility model;

[0016] Fig. 3 This is a structural diagram of the main connecting block of the utility model.

[0017] In the picture:

[0018] 100. Extrusion head body; 101. Heat sink;

[0019] 200, trachea connector; 201, main connecting block; 202, auxiliary connecting block; 203, connector; 204, ring groove; 205, slot; 206, screw hole; 207, placement hole; 208, tension spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figs. 1 to 3 The utility model provides a technical solution: a device of a lightweight extrusion head, including

[0022] The extrusion head body 100 has a heat sink 101 disposed in the middle thereof;

[0023] Also includes

[0024] The connecting component is arranged outside the heat sink 101 and is composed of an air cooling part and a connecting part.

[0025] The air cooling part is half wrapped around the outside of the heat sink 101;

[0026] The connecting portion is integrally formed on the outer surface of the air-cooling portion, and is connected to the internal area of ​​the air-cooling portion. The connecting portion is connected to an external cooling fan through a hose. When the temperature of the extrusion head body 100 is cooled and controlled, wind is blown toward the connecting portion through the external cooling fan, and then the wind passes through the air-cooling portion to cool the surface of the heat sink 101.

[0027] In the embodiment, preferably, the air-cooled part is a trachea connecting piece 200, which is composed of a main connecting block 201 and an auxiliary connecting block 202; the inner walls of the main connecting block 201 and the auxiliary connecting block 202 are provided with clamping grooves 205 at the upper and lower ends, the clamping grooves 205 are clamped into the radiating fins 101, so as to realize the installation of the whole trachea connecting piece 200 and the radiating fins 101, and the main connecting block 201 and the auxiliary connecting block 202 are further provided with ring grooves 204 in the middle regions, through the arrangement of the ring grooves 204, the radiating fins 101 can be better radiated when external wind enters.

[0028] In the embodiment, preferably, the main connecting block 201 and the auxiliary connecting block 202 are provided with placing holes 207 on the abutting surfaces, and the placing holes 207 are provided with tension springs 208, through the arrangement of the tension springs 208, the main connecting block 201 and the auxiliary connecting block 202 can be connected, when the two are assembled with the radiating fins 101, the main connecting block 201 and the auxiliary connecting block 202 can be tightly abutted in opposite directions, so as to realize stable installation, and the subsequent disassembly is also relatively convenient.

[0029] In the embodiment, preferably, the main connecting block 201 and the auxiliary connecting block 202 are provided with screw holes 206 at the upper and lower end surfaces, the screw holes 206 are in through connection with the placing holes 207, and bolts are screwed into the screw holes 206, the bottom ends of the bolts are embedded into the helical interiors of the tension springs 208, so as to realize the limiting of the tension springs 208, and avoid the separation of the tension springs 208 and the main connecting block 201 and the auxiliary connecting block 202.

[0030] In the embodiment, preferably, the connecting part is a plurality of connecting heads 203, the connecting heads 203 are in communication with the main connecting block 201, so that external wind can directly blow into the ring grooves 204, so as to realize the cooling of the radiating fins 101.

[0031] In the embodiment, preferably, the connecting heads 203 are located at the central positions of the trachea connecting piece 200, and the horizontal projections of the connecting heads 203 are located in the regions of the ring grooves 204.

[0032] In the embodiment, preferably, the inner side of the trachea connecting piece 200 is arc-shaped, and the center of the arc-shaped part of the trachea connecting piece 200 coincides with the axis of the extrusion head main body 100.

[0033] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for a portable extrusion head, comprising The extrusion head body (100) is provided with a heat sink (101) at the middle portion thereof; Its characteristics are: Also includes A connecting component is arranged outside the heat sink (101), and the connecting component consists of an air cooling part and a connecting part, wherein The air cooling portion is half-wrapped outside the heat sink (101); The connecting portion is integrally formed on the outer surface of the air-cooling portion, and the connecting portion is communicated with the inner area of ​​the air-cooling portion. The connecting portion is communicated with an external cooling fan through a hose.

2. The portable extrusion head device according to claim 1, characterized in that: The air cooling part is an air pipe connector (200), which is composed of a main connecting block (201) and an auxiliary connecting block (202); slots (205) are provided at the upper and lower ends of the inner walls of the main connecting block (201) and the auxiliary connecting block (202), and the slots (205) are inserted into the heat sink (101); and an annular groove (204) is also provided in the middle area of ​​the main connecting block (201) and the auxiliary connecting block (202).

3. The portable extrusion head device according to claim 2, characterized in that: A placement hole (207) is provided on the mating surfaces of the main connection block (201) and the auxiliary connection block (202), and a tension spring (208) is provided in the placement hole (207).

4. The portable extrusion head device according to claim 3, characterized in that: The upper and lower end surfaces of the main connecting block (201) and the auxiliary connecting block (202) are both provided with screw holes (206), the screw holes (206) and the placement holes (207) are in a through-connected shape, and a bolt is screwed into the screw hole (206), and the bottom end of the bolt is embedded in the spiral interior of the tension spring (208).

5. The portable extrusion head device according to claim 2, characterized in that: The connecting portion is a plurality of connecting heads (203), and the connecting heads (203) are in communication with the main connecting block (201).

6. The portable extrusion head device according to claim 5, characterized in that: The connecting head (203) is located at the center of the trachea connecting piece (200), and the horizontal projection of the connecting head (203) is located within the area of ​​the annular groove (204).

7. The portable extrusion head device according to claim 2, characterized in that: The inner side of the trachea connecting piece (200) is arc-shaped, and the center of the arc of the trachea connecting piece (200) coincides with the axis of the extrusion head body (100).

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