TWI574827B - Print-head air inducer of 3d printer - Google Patents

Description

3D printing nozzle air guiding device

The present invention relates to an air guiding device for a 3D printing machine which can blow out one of the annular air curtains by means of an evenly dispersed blow-to-printing article for rapid cooling and heat dissipation and deformation prevention.

At present, in general, the existing 3D printing machine, in order to reduce the temperature of the laminated material in the manufacturing process, to avoid the temperature being too high, and the laminated material is too soft to be stacked, a fan is connected to the nozzle, and a certain amount is given in the manufacturing process. The amount of air is used to immediately cool the laminated material sprayed from the nozzle.

For example, there is a new patent No. M504000 "spray structure and three-dimensional printing device" announced by the Republic of China on July 1, 104, which discloses: including a first pipe body, a screw, a second pipe body, a heater, and a nozzle. . The first tube has an axis, a feed port, and a discharge port, wherein the axis passes through the discharge port. The screw is threaded through the first tube and adapted to rotate along the axis. The second pipe body communicates with the feed port for conveying the molding material to the first pipe body, so that the molding material is conveyed to the discharge port by the agitation of the screw. The heater is disposed outside the first tube and adjacent to the discharge port. The heater is used to heat the molding material to form a melt. The nozzle is connected to the discharge port for printing the melt onto the platform. Another heat dissipation fin is attached to the outer wall surface of the first pipe body and located above the heater. The heat dissipation fins are disposed corresponding to a heat dissipation fan, so that the heat dissipation air provided by the heat dissipation fan flows to the heat dissipation fins to exchange heat with the heat dissipation fins. Therefore, the heat generated when the screw agitates the molding material is transmitted to the heat dissipation fins through the first pipe body, and then travels through the heat dissipation air flowing to the heat dissipation fins, thereby achieving the effect of cooling the printed articles.

However, although the above patent application can achieve the effect of lowering the temperature of the printed object, the aforementioned fan is only given by the wind in a single direction, which may cause the laminated material to be windy from a single direction. However, the tilting or deformation is so that the laminated material cannot reach the desired shape of the printed article, and thus it is not ideal in use.

Moreover, the prior art of the patent does not explicitly disclose the same technical features and effects as the present invention.

Accordingly, in view of the current device for dissipating heat and preventing deformation of a 3D printing head, the above disadvantages are obtained. Therefore, the present invention provides an air guiding device for a 3D printing head, comprising: a body having a first-class channel therein, one end of the flow channel forming an air inlet on the body, and a through hole formed in the body The body is provided with a retaining wall at a periphery of the through hole, and the retaining wall separates and communicates between the flow channel and the through hole, and at least one air outlet is disposed on a periphery of the retaining wall. The air outlet is in communication with the other end of the flow channel. A wind source is disposed at the air inlet of the body to provide a wind force, and the wind is blown out through the air outlet to form a wind curtain.

The above wind source is a cooling fan.

The air outlet is arranged in a ring shape, so that the air curtain is blown in a ring shape.

According to the above technical features, the following advantages are obtained:

1. The air outlet can be used to blow out one of the annular air curtains, and the average and scattered blowing to the printed items can be quickly cooled and prevented from deformation, thereby maintaining the integrity of the printed items.

2. Only need to set a wind source to achieve the effect of evenly distributing wind and rapid cooling, so it can effectively save cost and space.

(1) ‧‧‧ Ontology

(11)‧‧‧Runner

(12)‧‧‧Air inlet

(13) ‧‧‧through holes

(14) ‧ ‧ retaining wall

(15) ‧‧‧air outlet

(16) ‧‧‧ horn segment

(161) ‧‧‧ Expanded

(162)‧‧‧ Convergence end

(17) ‧‧‧ horizontal extension

(2) ‧ ‧ wind source

(B) ‧‧‧ sprinklers

(C) ‧ ‧ print items

[First figure] is a perspective view of the present invention.

[Second figure] is a sectional view of the combination of the present invention.

[Third image] is a schematic view of the use of the present invention.

Referring to the first and second figures, the embodiment of the present invention includes a body (1) and a wind source (2), wherein: the body (1) has a horn segment (16) and an extension from the horn segment a horizontal extension (17) of (16), the horn section (16) having an enlarged end (161) and a converging end (162) connecting the horizontal extension (17), and the body (1) is internally provided There is a first-class track (11), and one end of the flow channel (11) is formed with a tapered air inlet (12) on the enlarged end (161) of the body (1), and the body (1) The horizontal extension (17) is formed with a through hole (13), and the body (1) is provided with a tapered wall (14) at a periphery of the through hole (13). The retaining wall (14) is formed such that the other end of the flow passage (11) is formed with an annular air outlet (15), and the flow passage (11) and the through hole (13) are made by the retaining wall (14) Separated and not connected.

a wind source (2) disposed at the air inlet (12) of the body (1), the wind source (2) being a cooling fan to provide a lateral wind force, and the wind is The air outlet (15) of the body (1) is blown out by an annular air curtain.

In use, as shown in the second and third figures, a nozzle (B) of a 3D printer is passed through the through hole (13) through the body (1) to protrude therefrom. Below the main body (1), the wind blowing direction of the air outlet (15) of the main body (1) is in the same direction as the spraying material of the head (B). By starting the wind source (2), the wind source (2) generates a wind power through the air inlet (12), blows into the flow channel (11) of the body (1), and then through the flow channel (11) The other end of the annular air outlet (15) is blown out. Since the air outlet (15) is annular, a wind curtain is formed around the nozzle (B), and the air curtain can be blown around the nozzle (B). When the laminated material sprayed by the head (B) is formed to form a printed product (C), the air curtain can be blown to the printed matter (C) evenly and dispersedly, so that the printed matter (C) is fast. The temperature is lowered, and the printed matter (C) can be prevented from being blown to deform to maintain the integrity of the printed matter (C).

However, the above description is only one of the embodiments of the present invention. When the scope of the patent application of the present invention is not limited thereto, the simple equivalent changes and substitutions made by the scope of the patent application and the contents of the specification of the present invention are It is still within the scope of the protection covered by the scope of the invention.

(1) ‧‧‧ Ontology

(11)‧‧‧Runner

(12)‧‧‧Air inlet

(13) ‧‧‧through holes

(14) ‧ ‧ retaining wall

(15) ‧‧‧air outlet

(16) ‧‧‧ horn segment

(161) ‧‧‧ Expanded

(162)‧‧‧ Convergence end

(17) ‧‧‧ horizontal extension

(2) ‧ ‧ wind source

Claims (3)

An air guiding device for a 3D printing head, the 3D printing head having a nozzle, the air guiding device comprising: a body having a horn segment and a horizontal extending portion extending from the horn segment, the horn segment having an enlarged And an end of the horizontal extension of the horizontal extension, and the inside of the body is provided with a first-class channel, one end of the flow channel is formed with an air inlet on the enlarged end of the body, and the horizontal extension of the body is Forming a through hole, the body is provided with a tapered retaining wall at a periphery of the through hole, and the retaining wall separates and communicates between the flow channel and the through hole, and the block The outer periphery of the wall is provided with at least one air outlet, the air outlet is connected to the other end of the flow channel, and the nozzle passes through the through hole and protrudes below the body; The source is disposed at the air inlet of the body to provide a wind force, and the wind is blown through the air outlet and forms a wind curtain around the nozzle, and the air curtain can be blown around the nozzle. The air guiding device of the 3D printing head according to the first aspect of the invention, wherein the wind source is a cooling fan. The air guiding device of the 3D printing head according to the first aspect of the invention, wherein the air outlet is arranged in a ring shape, so that the air curtain is blown in a ring shape.