Spray head heat dissipation structure of fused deposition type 3d printer

Abstract

The utility model relates to a spray head heat radiation structure of a fused deposition type 3d printer, which comprises a spiral heat radiator, the heat radiator is sleeved at the lower part of a spray head of the fused deposition type 3d printer, the inner side of the heat radiator is provided with N spiral air ducts, the bottom of the heat radiator is provided with N air outlets, and the bottom of each air duct corresponds to one air outlet; the top of the radiator is fixedly connected with an air inlet cover extending towards one side of the radiator, and the air inlet cover is communicated with upper openings of the N air channels. The beneficial effects are that the spiral radiator is sleeved on the lower part of the nozzle of the fused deposition type 3d printer, and air is respectively guided into each air duct through the air inlet cover, so that the air spirally flows from top to bottom in each air duct to take away heat on the surface of the nozzle, and the lower part of the nozzle is radiated and cooled; and the problem of excessive hot melting when the thermoplastic material is extruded from the nozzle is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fused deposition type 3d printer, especially to a nozzle heat dissipation structure of fused deposition type 3d printer. BACKGROUND

[0002] Fused deposition type 3d printer is a molding equipment that utilizes the thermal plasticity of materials, heats and melts the thermal plasticity material, extrudes the melt from the nozzle, and deposits the melt according to the predetermined trajectory of the part.

[0003] The existing nozzle of the fused deposition type 3d printer has the following problems: if the heat dissipation efficiency of the nozzle is low, the thermal plasticity material will be overheated during the printing process, which will cause the phenomena of wire drawing, edge curling, thermal deformation and bridge sagging, and even the melt cannot be quickly cooled and formed during the deposition, which will cause the collapse phenomenon, affecting the 3D printing speed and quality. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above problems existing in the prior art, and provides a nozzle heat dissipation structure of fused deposition type 3d printer.

[0005] To achieve the above technical purposes and effects, the utility model realizes the following technical scheme:

[0006] A nozzle heat dissipation structure of fused deposition type 3d printer, comprising a spiral-shaped radiator, the radiator is sleeved on the lower part of the nozzle of the fused deposition type 3d printer, the inner side of the radiator is provided with N spiral-shaped air ducts, the bottom of the radiator is provided with N air outlets, and the bottom of each air duct is provided with an air outlet; the top of the radiator is fixedly connected with an air inlet cover extending to one side of the radiator, and the air inlet cover is connected with the upper openings of the N air ducts.

[0007] Among them, N air outlets are arranged in a circular array.

[0008] Among them, the tangent direction of the air outlet is towards the radiator.

[0009] Among them, the inner diameter of the radiator is equal to the outer diameter of the nozzle of the fused deposition type 3d printer.

[0010] Among them, the bottom end of the radiator is flush with the bottom end of the nozzle of the fused deposition type 3d printer.

[0011] Among them, the end of the air inlet cover away from the radiator is fixedly connected with a circular air inlet interface.

[0012] Among them, a T-shaped mounting plate is fixedly connected at the junction of the air inlet cover and the radiator, and the T-shaped mounting plate is mounted on the fused deposition type 3d printer by screws.

[0013] The utility model discloses a beneficial effect is: the radiator of spiral is sleeved in the nozzle lower part of fused deposition type 3d printer, and the wind is introduced into each air channel respectively through the air inlet cover, and the wind is in each air channel Spiral from top to bottom flow and take away the heat of nozzle surface, carry out heat dissipation cooling to the nozzle lower part, prevent the problem that the thermoplastic material appears excessive hot melt when extruding from the nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model. In the drawings:

[0015] Figure 1 It is the structure schematic diagram of the upper side observation of the nozzle heat radiation structure in the utility model;

[0016] Figure 2 It is the structure schematic diagram of the lower side observation of the nozzle heat radiation structure in the utility model;

[0017] The figure reference explanation: radiator 1, air channel 11, air outlet 12, air inlet cover 2, air inlet interface 21, T type mounting plate 3. DETAILED DESCRIPTION

[0018] The utility model will be described in detail below in combination with the embodiment, and reference is made to the drawings.

[0019] As Figure 1 And Figure 2 Shown, a nozzle heat radiation structure of fused deposition type 3d printer, including the radiator 1 of spiral, the radiator 1 is sleeved in the nozzle lower part of fused deposition type 3d printer, and the inner side of radiator 1 is provided with 4 spiral air channels 11, and the inner diameter of radiator 1 is equal to the outer diameter of the nozzle of fused deposition type 3d printer, to ensure that the airflow flowing in the air channel carries away the heat in the nozzle.

[0020] The bottom end of radiator 1 is flush with the bottom end of the nozzle of fused deposition type 3d printer, to avoid the adhesion of the radiator 1 and the melt extruded in the nozzle.

[0021] The bottom of radiator 1 is provided with 4 air outlets 12, and the 4 air outlets 12 are arranged in annular array, and the air outlet 12 is towards the tangent direction of radiator 1, and each air channel 11 has an air outlet 12 at the bottom, and the airflow flows in the air channel in spiral shape and then is discharged to the periphery of the radiator along the tangent direction of radiator 1 from the air outlet 12, to prevent the airflow from interfering with the melt extruded from the nozzle.

[0022] The top of the heat sink 1 is fixed with an air inlet cover 2 extending to one side of the heat sink 1, the air inlet cover 2 is communicated with the upper openings of the four air ducts 11, the end of the air inlet cover 2 away from the heat sink is fixed with a circular air inlet interface 21, the air inlet interface 21 is communicated with the air outlet of the heat dissipation fan by a hose, the airflow of the heat dissipation fan is sent into the air inlet cover 2, and then the airflow is introduced into each air duct 11 through the air inlet cover 2.

[0023] The junction of the air inlet cover 2 and the heat sink 1 is fixed with a T-shaped mounting plate 3, and the T-shaped mounting plate 3 is mounted on the fused deposition type 3D printer by screws.

[0024] The spiral heat sink is sleeved below the nozzle of the fused deposition type 3D printer, the air is introduced into each air duct through the air inlet cover, the air flows spirally from top to bottom in each air duct, the heat on the surface of the nozzle is taken away, the lower part of the nozzle is cooled, and the problem that the thermoplastic material is excessively fused when being extruded from the nozzle is prevented.

[0025] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A nozzle heat sink structure for a fused deposition type 3D printer, characterized by: The application relates to a heat sink comprising a spiral heat sink sleeved at the lower part of a nozzle of a fused deposition type 3D printer, N spiral air ducts arranged in the heat sink, N air outlets arranged at the bottom of the heat sink, and a wind inlet cover extending to one side of the heat sink and connected with the upper openings of the N air ducts.

2. The showerhead heat spreader structure of claim 1, wherein: The N air outlets are arranged in a circular array.

3. The showerhead heat spreader structure of claim 1, wherein: The air outlets are arranged in the tangential direction of the heat sink.

4. The showerhead heat spreader structure of claim 1, wherein: The inner diameter of the heat sink is equal to the outer diameter of the nozzle of the fused deposition type 3D printer.

5. The showerhead heat spreader structure of claim 1, wherein: The bottom end of the heat sink is flush with the bottom end of the nozzle of the fused deposition type 3D printer.

6. The showerhead heat spreader structure of claim 1, wherein: A circular ring-shaped wind inlet interface is fixed to the end of the wind inlet cover away from the heat sink.

7. The showerhead heat spreader structure of claim 1, wherein: A T-shaped mounting plate is fixed to the junction of the wind inlet cover and the heat sink, and the T-shaped mounting plate is screwed on the fused deposition type 3D printer.

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