KR101768890B1

KR101768890B1 - color nozzle for 3D printer

Info

Publication number: KR101768890B1
Application number: KR1020150135182A
Authority: KR
Inventors: 김영호; 정제용; 최재욱
Original assignee: 주식회사 영진하이텍
Priority date: 2015-09-24
Filing date: 2015-09-24
Publication date: 2017-08-17
Also published as: KR20170036249A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a color implementation nozzle for a three-dimensional printer, and more particularly, to a color implementation nozzle for a three-dimensional printer capable of multi-color expression and controlling the melting temperature for each color.
In addition, a plurality of feed lines, which are connected to a conveying device of a three-dimensional printer and conveyed by a conveying device, and a plurality of feed lines, which are installed through the support and are supplied with filaments of different colors for color implementation, A plurality of heaters for melting the filament in a solid state with a liquid resin, and a nozzle for discharging and laminating the resin melted by the heater.

Description

[0001] The present invention relates to a color nozzle for a 3D printer,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a color implementation nozzle for a three-dimensional printer, and more particularly, to a color implementation nozzle for a three-dimensional printer capable of multi-color expression and controlling the melting temperature for each color.

Generally, cutting or injection molding is used to manufacture a product in a two-dimensional or three-dimensional form, and most of the small-sized production is dependent on the cutting process due to the cost of manufacturing an expensive mold.

On the other hand, there exist products which are difficult to manufacture due to the limitation of cutting using a tool, and they are manufactured by stacking products based on 3D modeling data inputted by the necessity to manufacture complex products more easily and quickly A 3D printer was developed.

Korean Patent No. 10-1451794 "Composite 3D printer and its control method" for mixing filaments of various colors or materials to an FDM type 3D printer for melting and laminating linear filaments has been developed Material or various colors can be realized.

However, as the plurality of filaments are melted by one heater, there is a problem that the filaments having different melting temperatures can only be heated to one temperature.

As a result, there is a problem that the melted physical properties are different for each filament, and the mixing and discharge pressure are different.

Further, the filaments used for removing filaments from the nozzles used for replacing the used filaments with other filaments are changed back to feed filaments after the filaments are pulled back (in the direction opposite to the feeding direction) The filaments in the molten liquid state are not sufficiently removed (backward) from the inside of the nozzle, and therefore, there is a problem that a large amount of the filament stay in the nozzle.

Thus, even if other filaments are fed, there is a problem that the feeding timing of the other filaments is delayed until all of the previous filaments staying in the nozzles are discharged.

In order to increase the deposition speed, the filament must be melted and supplied in a short time. However, when the temperature of the nozzle is increased to melt the filament in a short time, the peripheral device of the nozzle including the transfer device connected to the nozzle by the high temperature of the nozzle There was a problem that it was broken.

Korean Patent No. 10-1451794 "Composite 3D printer and its control method"

It is an object of the present invention to provide a color implementation nozzle for a three-dimensional printer for heating and melting a plurality of filaments having different physical properties to different temperatures.

It is another object of the present invention to provide a color implementation nozzle for a three-dimensional printer for rapidly melting filaments.

In order to achieve the above-mentioned object, a color-forming nozzle for a three-dimensional printer according to the present invention comprises a support which is connected to a conveying device of a three-dimensional printer and conveyed by a conveying device, A plurality of heaters for melting the solid filaments supplied through the supply line with the liquid resin and a nozzle for discharging and stacking the melted resin by the heater, .

The plurality of supply lines are made of a metal material, and heat is transferred to the air to reduce the heat transferred to the support while heating the filament to be supplied to the nozzle by using the heat conducted from the nozzle .

The plurality of supply lines may further include a radiation member having a plurality of radiation fins surrounding the respective supply lines.

The nozzle may include a plurality of supply ports through which the supply lines are coupled to supply the respective filaments and a discharge port through which the filament is discharged and a radial supply path connecting the plurality of supply ports to the discharge port. .

In addition, the nozzles are provided with individual heaters for respective supply holes to which the supply lines are coupled, and the individual temperature can be adjusted for each filament supplied to each supply port.

The nozzle is characterized by having a radial outer shape centering on the discharge port so that each supply port is spaced apart to minimize thermal conduction between the supply ports to which the supply lines are coupled.

As described above, according to the color implementation nozzle for a three-dimensional printer according to the present invention, the plurality of filaments having different physical properties can be heated and melted at different temperatures.

In addition, according to the color implementation nozzle for a three-dimensional printer according to the present invention, the filament to be supplied to the nozzle can be pre-heated by the supply line to melt the filament in a short period of time, The line has the effect of diffusing heat.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 or 2 shows a color implementation nozzle for a three-dimensional printer according to the present invention.
3 shows a first embodiment of a color implementation nozzle for a three-dimensional printer according to the present invention.
4 or 5 show a second embodiment of a color implementation nozzle for a three-dimensional printer according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a view showing a first embodiment of a color-forming nozzle for a three-dimensional printer according to the present invention, and FIG. 4 Or FIG. 5 is a view showing a second embodiment of a color implementation nozzle for a three-dimensional printer according to the present invention.

FIG. 1 or 2 shows a nozzle for a color printer for a three-dimensional printer according to the present invention, which comprises a support 1 connected to a conveying device of a three-dimensional printer and conveyed by a conveying device, A plurality of supply lines 2 to which filaments 10 of different colors are supplied for color implementation and a solid state filament 10 to be supplied through the supply line 2 are melted with liquid resin And a nozzle 5 for discharging the resin melted by the heater 3 and stacking the melted resin.

The plurality of supply lines 2 may be connected to the support 1 via a plurality of fastening members 11 or may be directly fixed to the support 1 of the supply line 2.

For example, a plurality of nut-shaped fastening members 11 are screwed to the outer peripheral surface of the supply line 2 and fixed to the support body 1, Or may be coupled to the support body 1 through a screw thread formed thereon.

The plurality of supply lines 2 are made of a metal so that the heat transferred to the support 1 while heating the filament 10 to be supplied to the nozzle 5 by using the heat conducted from the nozzle 5 The heat that is conducted to diffuse it into the air.

Thus, the supply line 2 can preheat the filament 10 to be fed to the nozzle 5 to melt the filament 10 in a short period of time, The supply line 2 diffuses heat so as not to be delivered to the nozzles 5 and the peripheral devices of the nozzles 5 including the transfer device connected to the nozzles 5 by the high temperature of the nozzles 5 are prevented from being damaged .

The supporting body 1 can be fastened to the conveying device by a plurality of fastening grooves 12 and the outer shape of the supporting body 1 and the shape of the fastening groove 12 May change.

For example, the structure of the support 1 as shown in (2-I) of FIG. 2 is in the form of being coupled to a transfer device of a delta type three-dimensional printer having three transfer supports, And three conveyance supports are respectively coupled to the three directions.

The nozzle 5 may include a plurality of heaters 3 and a plurality of temperature sensors 4 as shown in (2-II).

The nozzle 5 includes a plurality of supply ports 51 to which the supply lines 2 are connected and to which the filaments 10 are supplied and a discharge port 52 to which the filament 10 is discharged, And a radial supply path 53 connecting the plurality of supply ports 51 and the discharge port 52. [

The nozzle 5 may further include a sealing member 54 for sealing the plurality of openings formed in the process of perforating the plurality of supply paths 53 at the side of the nozzle 5. [

Figure 3 shows a first embodiment of a color implementation nozzle for a three-dimensional printer according to the present invention, wherein the plurality of supply lines 2 are connected to respective supply lines 2 The heat dissipating member 21 may dissipate the heat transmitted from the nozzle 5 more effectively and heat the heat reaching the support body 1 more effectively. .

As shown in (3-I) or (3-II), the nozzle 5 has individual heaters 4A, 4B and 4C for each supply port 51 to which each supply line 2 is connected, So that the individual temperature can be adjusted for each filament fed to each of the supply ports 51.

For example, each of the heaters 3A, 3B and 3C and respective temperature sensors 4A, 4B and 4C may be provided for each position such as 1A, 1B and 1C, The first filament is melted and supplied to the discharge port 52 through the first supply path 53A.

In the position 1B, the second heater 3B melts the second filament and supplies it to the discharge port 52 through the second supply path 53B. In the 1C position, the third heater 3C feeds the third filament And supplied to the discharge port 52 through the third supply path 53C.

Thus, according to the color implementation nozzle for a three-dimensional printer according to the present invention, the plurality of filaments having different physical properties can be heated to different temperatures and melted and supplied.

In order to minimize the thermal conduction between the supply holes 51 to which the supply lines 2 are coupled, the nozzle 5 has a radial outer shape around the discharge hole 52 so as to be spaced apart from the supply holes 51 .

More specifically, as shown in (3-II), a plurality of cut surfaces such as 5L are formed along the outer circumferential surface of the nozzle 5 to minimize thermal conduction between the respective positions 1A, 1B, and 1C.

For example, the position 1B is a position where the heat by the second heater 3B is supplied to the first heater 3B while the second heater 3B melts the second filament and supplies the second filament to the discharge port 52 through the second supply path 53B. It is possible to effectively prevent the first filament and the third filament from being supplied to the discharge port 52 by being transmitted to the supply path 53A and the third supply path 53C.

4 or 5 shows a second embodiment of a color-forming nozzle for a three-dimensional printer according to the present invention. As shown in (4-I) or (4-II) 55B, and 55C are positioned in the plurality of openings formed in the process of perforating the nozzles 5A, 5B, and 5C at the side of the nozzle 5, and the nozzles 5 A part of the used filament staying inside the filament is recovered to reduce delay in feeding time of the other filament.

For example, when the second filament is supplied through the second supply path 53B as shown in (4-I) or (4-II), the second supply cylinder 55B maintains the advanced state, The first supply cylinder 55A and the third supply cylinder 55C are maintained in the reverse state.

On the other hand, when replacing the used first filament with the third filament, the third supply cylinder 55C advances as shown in (5-I) or (5-II) 55B are reversed.

The melted second filaments of the second supply path 53B and the discharge port 52 are pulled by the backward movement of the second supply cylinder 55B and the melted third filaments in the third supply path 53C, The filament is supplied to the discharge port 52 as 10C by advancing the third supply cylinder 55C.

At this time, the amount of the third filament fed to the discharge port 52 by the advancement of the third supply cylinder 55C, such as 10C, is determined by the volume inside the nozzle which varies according to the operation of the third supply cylinder 55C .

As described above, the filaments used by the plurality of supply cylinders 55A, 55B, and 55C are pulled, and the other filaments to be replaced are pushed and fed to the discharge port 52 to minimize the filaments used in the nozzles, It is possible to obtain the effect that the supply time point of the supply time is faster.

That is, it is possible to minimize the delay in feeding the other filaments.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention. The scope of the invention should therefore be construed in light of the claims set forth to cover many of such variations.

1: Support
2: supply line
3: Heater
4: Temperature sensor
5: Nozzle
10: filament
11: fastening member
12: fastening groove
21:
51: Supply port
52: Outlet
53: supply path
54: sealing member
55: Supply cylinder

Claims

A support connected to the conveying device of the three-dimensional printer and conveyed by the conveying device;
A plurality of supply lines installed through the support and supplied with filaments of different colors for color implementation;
A plurality of heaters for melting the solid state filament supplied through the supply line with a liquid resin;
And a nozzle for discharging and stacking the resin melted by the heater,
The nozzle includes a plurality of supply ports through which supply lines are coupled to supply the respective filaments;
A discharge port formed toward the lower side and discharging the filament;
And a radial supply passage connecting the plurality of supply ports and the discharge port,
The nozzle is provided with a heater for each supply port to which each supply line is coupled, and the temperature can be individually adjusted for each filament supplied to each supply port.
The nozzle has a plurality of cut-out surfaces along the outer circumferential surface such that the respective supply ports are spaced apart from each other in order to minimize thermal conduction between the supply ports to which the supply lines are coupled,
Further comprising a supply cylinder in each of the plurality of openings formed in the process of perforating the plurality of supply paths on the side in order to recover the filaments staying inside and delaying the supply timing of the other filaments,
Color implementation nozzles for 3D printers.

The method according to claim 1,
Wherein the plurality of supply lines are made of a metal material and diffuse the heat conducted to the air to reduce the heat transferred to the support while heating the filament to be supplied to the nozzle by using heat conducted from the nozzle
Color implementation nozzles for 3D printers.

The method according to claim 1,
Wherein the plurality of supply lines further include a radiation member having a plurality of radiation fins surrounding the respective supply lines
Color implementation nozzles for 3D printers.

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