KR101939639B1 - Three dimensional structure printing apparatus capable of printing carbon material - Google Patents

Abstract

The present invention discloses a three-dimensional structure output apparatus. The three-dimensional structure output device capable of outputting the carbon material of the present invention includes a first housing having an XY moving means for moving the bed and the bed supporting the three-dimensional structure output in the X-axis direction or the Y- A first hopper for storing a first output material on the first bank, a first supply pipe, a second hopper for storing a second output material, a second supply pipe, A first motor, and an output nozzle, wherein a part of the output nozzle passes through the first partition and is exposed to the inside of the first housing part, and the first hopper, the first supply pipe, the second hopper, the second supply pipe, A second housing part provided in a state of being isolated from the first housing part, a first hopper provided in the second housing part, a part of the first supply pipe, a part of the second hopper and the second supply pipe, The rest of the first supply line, the rest of the second supply line And the output nozzle includes an upper plate portion shielding the upper portion of the second housing portion to be held inside the second housing portion.

Description

TECHNICAL FIELD [0001] The present invention relates to a three-dimensional structure output apparatus capable of outputting a carbon material,

The present invention relates to a three-dimensional structure output apparatus capable of outputting a carbon material, and more particularly, to a three-dimensional structure output apparatus capable of outputting a carbon material having a water-cooled nozzle so as to output a high melting point resin.

The main material used in conventional 3D printers is synthetic resin. In recent years, a variety of industrial plastics such as engineering plastics, metal powders, concrete, and carbon fiber reinforced plastics have been widely used.

Such an industrial material has a high melting point (melting point) so that excessive heat may concentrate on the output nozzle of the 3D printer, which may damage the nozzle or fail to manage the heat of the end point of the output nozzle. It is being raised.

However, in spite of these difficulties, when industrial materials are used in 3D printers, it can be replaced with a traditional mold making method, thereby bringing about an economic effect of lowering manufacturing costs.

Accordingly, there is a demand for a 3D printer device equipped with a nozzle system for a high-temperature resin so that 3D printing can be performed using industrial materials.

Patent Document 1: Korean Patent No. 10-1594834 (Published on Feb. 11, 2016) Patent Document 2: Korean Patent No. 10-1715865 (public announcement: March 07, 2017) Patent Document 3: Korean Patent Laid-Open No. 10-2017-0057900 (Disclosure Date: May 26, 2017) Patent Document 4: Korean Patent No. 10-1537494 (Published on July 16, 2015)

The present invention, which is devised in view of the above-described need, is to provide a three-dimensional structure capable of outputting a carbon material capable of outputting a reliable three-dimensional structure by reducing the thermal influence of the end point of the nozzle when a high melting point resin such as carbon fiber is used as a material. And an object of the present invention is to provide a structure output apparatus.

According to an aspect of the present invention, there is provided a three-dimensional structure output apparatus capable of outputting a carbon material according to an embodiment of the present invention includes a bed for supporting an output of a three-dimensional structure and a bed for supporting the bed in an X- A first housing part having an XY moving means for simultaneously moving the first housing part and the second housing part, a first housing part having a first housing part having an XY moving means for simultaneously moving the first housing part and the first housing part, A second supply pipe, a first motor, and an output nozzle, wherein a part of the output nozzle passes through the first partition and is exposed to the inside of the first housing part, The first hopper, the first hopper, the second hopper, the second supply pipe, and the first motor are installed in a state separated from the first housing part, and a second housing part provided in the second housing part, Prize Wherein a portion of the first supply pipe, a portion of the second hopper and the second supply pipe, and a first motor are exposed to the outside, the remainder of the first supply pipe, the remainder of the second supply pipe, And an upper plate portion shielding the upper portion of the second housing portion so as to be held inside the portion.

In this case, the three-dimensional structure output device capable of outputting the carbon material includes a heat exchange housing provided on the outer circumferential surface of the output nozzle, a refrigerant cooled and cooled by supplying the cooled refrigerant to the heat exchange housing, A refrigerant transport pipe for recovering hot water, and a second motor for providing a fluid pressure to allow the refrigerant to flow through the refrigerant transport pipe.

The first hopper may store carbon, wood, jade, or a combination thereof. The second hopper may be made of polylactic acid (PLA), acrylonitrile-butadiene -styrene), nylon, PEEK (Polyetheretherketone), or a combination thereof.

On the other hand, the three-dimensional structure output device capable of outputting the carbon material further includes a control member for controlling the flow of the material to the first supply pipe and the second supply pipe.

The first partition may include a first housing part and a second housing part to maintain the internal temperature of the first housing part at a predetermined first temperature and maintain the internal temperature of the second housing part at a predetermined second temperature, 2. Block heat exchange between the housing parts.

The second housing part may further include a first heater and a second heater for heating the inside of the first housing part on the lower surface.

On the other hand, the output nozzle is detachable from the first supply pipe and the second supply pipe.

On the other hand, the output nozzle is provided with a spiral groove therein.

According to various embodiments of the present invention, even when a material having a high melting point such as carbon fiber, concrete, metal powder, or the like is used as a material for outputting a three-dimensional structure, the thermal effect on the end point of the nozzle is reduced.

Further, by preventing the deterioration of the performance of the nozzle, the output reliability of the three-dimensional structure is enhanced and the output speed is improved.

1 is a view illustrating a three-dimensional structure output apparatus capable of outputting a carbon material according to an embodiment of the present invention;
FIG. 2 is an exploded view of the three-dimensional structure output apparatus shown in FIG. 1,
3 is a front projection view of the three-dimensional structure output apparatus shown in Fig. 1,
FIG. 4 is a view for explaining the thermal management of the chamber of the three-dimensional structure output apparatus shown in FIG. 1;
5 is a view illustrating a structure of a printing unit and a thermal management unit according to an embodiment of the present invention,
FIG. 6 is a view for explaining a state in which the thermal conduction unit is disassembled in the printing unit shown in FIG. 5,
FIG. 7 is a view for explaining a state in which the printing unit shown in FIG. 5 is disassembled,
8 is a view for explaining a state in which a printing unit according to another embodiment of the present invention is disassembled;
9 is a view for explaining an internal spiral structure of an output nozzle according to an embodiment of the present invention, and FIG.
10 is an exemplary view for explaining a thermal management of a three-dimensional structure output apparatus according to an embodiment of the present invention;

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. Further, the accumulation or ratio of the drawings in the various embodiments of the present invention is merely exemplary, and the elements of the present invention shown in the drawings according to the embodiments may be designed differently in shape, form, size, or size.

1 is a view illustrating a three-dimensional structure output apparatus capable of outputting a carbon material according to an embodiment of the present invention. Referring to FIG. 1, the three-dimensional structure output apparatus includes a housing unit 100, a printing unit 200, and a thermal management unit 300.

Specifically, the housing part 100 includes a first housing part 110, a second housing part 130, and an upper plate part 150. The first housing part 110 is a component constituting the lower part of the output device. The first housing part 110 includes a bed for supporting the output, an XY-axis moving unit for moving the bed in the X-axis direction and the Y-axis direction, and a Z-axis moving unit for moving the second housing unit 130 in the Z- And a moving means.

In the present specification, the X-Y-axis moving means and the Z-axis moving means are not specifically described. However, the bad, the nozzle, etc. are moved in the X, Y, and Z axis directions by using a chain, a spring, and a step motor.

The present invention is divided into a first housing part 110 and a second housing part 130. The first housing part 110 includes a bed 111, a conveying device 113, a control part (not shown) . The control unit is not shown but is a control device composed of a microprocessor for controlling the operation of the feeding means 113 and the like in order to control the movement of the bad 111 and the nozzle 270.

The second housing part 130 is provided with a printing part 200. The second housing part 130 spatially separates the printing part 200 from the first housing part 110 for thermal management of the printing part 200.

The partition part 150 is a component provided for thermal management while facilitating maintenance and repair of the printing part 200. Specifically, the partition wall 150 exposes the first hopper 210, the second hopper 230, and the first motor 250 to the outside, and the output nozzle 270 is connected to the inside of the second housing part 130 . By adopting such a structure, it is possible to easily insert the material into the first hopper 210 and the second hopper 230 while preventing the internal temperature of the second housing part 130 from being lowered, thereby maintaining the predetermined temperature, can do.

In order to prevent thermal stress from being applied to the output nozzle 270 when a material having a high melting point is used, the thermal management unit 300, which is a cooling system that discharges heat concentrated in the output nozzle 270 to the outside, (Output nozzle) while reducing the internal temperature of the second housing part 130 to a predetermined second temperature or higher, thereby improving the output speed of the three-dimensional structure output device The effect can be achieved.

2 is an exploded view of the three-dimensional structure output apparatus shown in FIG. Referring to FIG. 2, the first housing part 110 includes a bed 111 for supporting an output and a conveying unit 113 for moving the ships 111 in the X-axis and Y-axis directions. Although not shown in FIG. 2, it further includes a control unit (not shown) for controlling the conveying means 113.

The second housing part 130 provided at the upper part of the first housing part 110 includes the components constituting the printer part 200. A first heater 131 and a second heater 133 are provided on the lower surface of the second housing part 130. The first and second heaters 131 and 133 provide heat to maintain the internal temperature of the first housing part 110 at a predetermined first temperature. When the internal temperature of the first housing part 110 is maintained at a predetermined temperature or more (50 ° C to 300 ° C) by the first and second heaters 131 and 133 and when the heat management part 300 is not provided, Since thermal stress is concentrated on the nozzle 270, damage may be caused or reliability of the output may be deteriorated. For example, if the temperature of the output nozzle 270 is in the range of 150 ° C to 500 ° C, and if the temperature of the output nozzle 270 rises to 500 ° C or more, problems due to thermal stress may occur.

In order to solve this problem, when the internal temperature of the second housing part 130 is lowered as a whole, the cooling efficiency is not good. Therefore, a cooling member for cooling only the part of the output nozzle 270 excluding the discharge port is required. If the internal temperature of the second housing part 130 is entirely lowered, the heat management efficiency is lowered and the nozzle 270 is clogged due to thermal stress of the nozzle 270 and heat transfer to the hopper connection part 290 .

Accordingly, while the internal temperatures of the first housing part 110 and the second housing part 130 are managed differently from each other and the output nozzle 270 is maintained in the second housing part 130, It is possible to separately manage the ambient temperature of the output nozzle 270 by the thermal management unit 300, thereby reducing the occurrence of a failure due to the thermal stress of the output nozzle 270. Further, the operating life of the output nozzle 270 also increases.

The heat management unit 300 can be implemented in a water-cooled manner. In the case of the water-cooled type, the coolant can be brought into contact with the output nozzle 270 to rapidly lower the temperature of the output nozzle 270 or maintain a constant temperature. The heat management unit 300 includes a heat exchange module 350 surrounding the output nozzle 270, a refrigerant transport pipe 310 for providing refrigerant to the heat exchange module 350, And a second motor 330 for providing a fluid pressure to cause the fluid to flow. Water (H ₂ O) may be used as the refrigerant.

The printing unit 200 is configured to expose the first hopper 210, the second hopper 230, and the first motor 250 to the outside. The configuration exposed to the outside is advantageous in that it can be easily managed by the user.

 3 is a front projection view of the three-dimensional structure output apparatus shown in Fig. Referring to FIG. 3, the temperature in the chamber (Area 1) provided by the first housing portion 110 is maintained in the first temperature range of 50 ° C to 300 ° C. On the other hand, in the print preparation area (Area 2) provided by the second housing part 130, the temperature is preferably kept lower than the first temperature range. For example, if high heat is applied to the first hopper, the second hopper, the first motor, etc., it may cause a thermal problem. On the other hand, since the output nozzle 270 must maintain a high temperature, it is not easy to manage the internal temperature of the second housing part 130 as a whole. In order to solve such a problem, the thermal management unit 300 for managing the rows of the output nozzles 270 is separately constructed.

Since the first hopper 210, the second hopper 230, and the first motor 250 are configured to be exposed to the outside, the user can easily repair, replace, or refill the material, .

FIG. 4 is a view for explaining chamber heat management of the three-dimensional structure output apparatus shown in FIG. 1. FIG. Referring to FIG. 4, a space (hereinafter referred to as a chamber) for outputting a structure in the three-dimensional structure output apparatus is a region indicated by a dotted line in FIG. In order to maintain a constant temperature in the chamber, first and second heaters 131 and 133 are provided in at least two locations. The heater supplies heat to keep the internal temperature of the chamber constant. The internal temperature of the chamber is maintained in the range of 50 to 300 占 폚.

The various parts of the printing unit 200 are located in the upper part of the chamber. A part of the nozzle 270 is exposed to the inside of the chamber and the rest of the nozzle 270 is heat exchanged by the heat exchange housing 350 as described above. That is, since the output nozzle 270 is heated to a temperature range of 150 ° C to 500 ° C according to the operation state, only the remaining portion of the output nozzle 270 is cooled in a water-cooled manner.

As described above, the output speed of the three-dimensional structure can be improved by partially cooling the output nozzle 270 by the water-cooling method while keeping the internal temperature of the chamber at the first temperature.

5 is a view illustrating a structure of a printing unit and a thermal management unit according to an embodiment of the present invention. Referring to FIG. 5, the heat management unit 300 is provided in the output row 270 of the printing unit 200, so that the heat management for the output nozzle 270 can be efficiently performed. Specifically, the heat management unit 300 includes a refrigerant transport pipe 310, a second motor 330 for providing a fluid pressure to circulate the refrigerant flowing through the refrigerant transport pipe 310, and a second motor 330 provided by the refrigerant transport pipe 310 The cooled refrigerant is brought into contact with the output nozzle 270, heat is obtained from the output nozzle 270, and the heated refrigerant is recovered from the output nozzle 270 to perform heat management through heat exchange.

6 is a view for explaining a state in which the thermal conduction unit is disassembled in the printing unit shown in FIG. 6, the entire outer circumferential surface of the output nozzle 270 is surrounded by the heat exchange module 350, except for a discharge port through which the material is discharged from the output nozzle 270. The heat exchange module 350 lowers the temperature of the output nozzle 270 through the heat exchange by flowing the cooled refrigerant and flowing out the heated refrigerant. As shown in FIG. 5, the printing unit 200 is designed to be easily separated from the thermal management unit 300.

7 is a view for explaining a state in which the printing unit shown in Fig. 5 is disassembled. 7, the first hopper 210, the first supply pipe 220, the second hopper 230, the second supply pipe 240, the first motor 250, and the output nozzle 270, . Although the first supply pipe 220 and the second supply pipe 240 are not shown separately from the first hopper 210 and the second hopper 230 in FIG 6, The second supply pipe 240 may be separated from the first hopper 210 and the second hopper 230, respectively.

Since the output nozzle 270 can be separated from the first supply pipe 220, the second supply pipe 240 and the first motor 250, the output nozzle 270 can be separated and cleaned. The output nozzle 270 can be easily separated and cleaned and the first hopper 210 and the first supply pipe 220 can be separated and the second hopper 230 and the second supply pipe 240 can be separately separated, There is no problem that materials are mixed in the supply pipe other than mixing the materials in the output nozzle 270 even if various materials are used.

By providing the detachable hopper, the feed pipe, and the output nozzle, the food can be output to the three-dimensional structure output device using the food material. Also, the output nozzle 270 can output a resin in the form of a pellet.

8 is a view for explaining a state in which a printing unit according to another embodiment of the present invention is disassembled. 8, the output nozzle 270 has a hopper connection part 290 at an upper end thereof and is connected to the first hopper 210, the second hopper 230 and the first supply pipe 220 through the hopper connection part 290, And the second supply pipe 240, as shown in Fig.

At this time, when the nozzle 270 is heated to a high temperature, when the heat of the nozzle 270 is transferred to the hopper connection part 290, the supplied material melts so that the pipe is connected to the nozzle 270, the first supply pipe 220, 2 supply pipe 240 as shown in FIG. In order to prevent such a failure, the hopper connection portion 290 is provided with a heat exchange housing 350, and the refrigerant is circulated through the refrigerant transport pipe 310 to cool the refrigerant.

9 is a view for explaining an internal spiral structure of an output nozzle according to an embodiment of the present invention. Referring to FIG. 9, it can be seen that the output nozzle 270 has a helical threaded structure 271 therein. Since the output nozzle 270 has the threaded structure 271 therein, it is possible to easily mix the materials when mixing the heterogeneous materials supplied from the first hopper 210 and the second hopper 230 and outputting them It helps to be done. In addition, since the threaded structure 271 is provided, the heat exchange efficiency with the heat exchange module 350 provided on the outer peripheral surface is enhanced.

Accordingly, according to the embodiment of the present invention, it is possible to output various kinds of materials through the output nozzle 270. In the case of industrial materials, it is not necessary to provide a separate output nozzle 270 for each material, (270) can be cleaned and used, thereby exhibiting an excellent effect of increasing the expandability of the material used.

10 is a view for explaining a heat conduction unit of a three-dimensional structure output apparatus according to an embodiment of the present invention. Referring to FIG. 10, the thermal management unit 300 is provided to manage heat concentrated in the output nozzle 270 and the second motor 330. Specifically, the output nozzle 270 can be heated to 150 ° C to 500 ° C due to the high temperature at which the material is melted. The heat management unit 300 includes a heat exchange housing 350 surrounding the nozzle 270 to relieve thermal stress on the output nozzle 270 subjected to thermal stress due to high temperature. The heat management unit 300 supplies water as a refrigerant from the water tank 390 to the heat exchange housing 250 through the refrigerant transportation pipe 310 and supplies the water heated by the heat recovered while passing around the output nozzle 270 Is circulated by the second motor (330), passes through the radiator (370) and cooled, and is recovered into the water tank (390). The thermal management unit 300 can perform the thermal management by cooling only the remaining portion of the output nozzle 270 except for the discharge portion by adopting the water-cooled thermal management method.

Although illustrative embodiments and applications of the present invention have been shown and described, many changes and modifications may be made without departing from the scope of the present invention, and such modifications may be made by one of ordinary skill in the art to which the present invention pertains It can be clearly understood. Accordingly, the described embodiments are illustrative and not restrictive, and the invention is not limited by the accompanying detailed description, but is capable of modifications within the scope of the claims.

100: housing part 110: lower housing part
111: Bad 113: XY conveying means
130: upper housing part 131: first heater
133: second heater 135: first partition
150: upper plate part 200:
210: first hopper 220: first supply pipe
230: second hopper 240: second supply pipe
250: first motor 270: output nozzle
290: hopper mixing unit 300:
310: refrigerant transport pipe 330: second motor
350: Heat exchange housing 370: Radiator
390: Water tank

Claims (8)

A three-dimensional structure output apparatus capable of outputting a carbon material,
A first housing portion having a bed for supporting the output of the three-dimensional structure and an XY moving means for moving the bed in the X-axis direction or the Y-axis direction or the X-axis and Y-axis directions at the same time;
A first hopper for storing a first output material on the first bank, a first supply pipe, a second hopper for storing a second output material, a second supply pipe, A first motor, and an output nozzle, wherein a part of the output nozzle is exposed to the inside of the first housing part through the first partition, and the first hopper, the first supply pipe, the second hopper, 2 supply pipe and the first motor include a second housing part installed in a state of being isolated from the first housing part;
The first hopper and a part of the first supply pipe provided in the second housing part, a part of the second hopper and the second supply pipe, and the first motor are exposed to the outside, and the remaining part of the first supply pipe, A top plate portion shielding an upper portion of the second housing portion so that the rest of the supply pipe and the output nozzle are held inside the second housing portion; And
A water tank for storing the cooled refrigerant, a radiator for cooling the heated refrigerant by exposing the heated refrigerant to the air, a coolant storage unit for supplying the cooled refrigerant stored in the water tank to the heat exchange housing, A coolant transport pipe for passing the coolant heated by the heat recovered while passing around the coolant transporting pipe to the radiator and passing the cooled coolant through the radiator to the water tank, And a second motor for providing a fluid pressure to the first motor. delete The method according to claim 1,
The first hopper stores carbon, wood, jade or a combination thereof,
Wherein the second hopper stores PLA, ABS, nylon, PEEK, or a combination of these materials. The method according to claim 1,
Further comprising a control member for controlling the flow of the material to the first supply pipe and the second supply pipe. The method according to claim 1,
The first partition wall may be formed in the first housing part and the second housing part so as to maintain the internal temperature of the first housing part at a predetermined first temperature and maintain the internal temperature of the second housing part at a predetermined second temperature, And the heat exchange between the first and second portions is blocked. The method according to claim 1,
Wherein the second housing part further comprises a first heater and a second heater for heating the inside of the first housing part on a lower surface thereof. The method according to claim 1,
Wherein the output nozzle is separable from the first supply pipe and the second supply pipe. The method according to claim 1,
Wherein the output nozzle is provided with a spiral groove in the inside thereof.

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