KR20200071851A - Mixing nozzle - Google Patents

Abstract

The present invention relates to a mixing nozzle of a 3D printer, which manufactures products of various colors continuously during product processing and, more specifically, to a mixing nozzle comprising: powder tanks (100) formed in plural and accommodating each of color pellets (P); a mixing chamber (200) in which the color pellets are supplied, mixed and dissolved from each of the powder tanks; and a jet port (300) coupled to the mixing chamber, and having a hole.

Description

Mixing nozzle {Mixing nozzle}

The present invention is an invention for a mixing nozzle of a 3D printer, and aims to continuously manufacture products of various colors during product processing.

Patent invention 001 relates to a nozzle unit for a 3D printer, specifically, a nozzle unit for a 3D printer includes a nozzle body, a plurality of nozzles, and a mixing unit. The nozzle body is formed with a plurality of openings to face the central portion of the interior. The plurality of nozzles are inserted into each of the openings to inject the filament. The mixing unit is inserted into the nozzle body so as to face the downward direction from the center portion to mix the filaments injected through the nozzles with each other to present the feature of spraying to the outside.

Patent invention 002 relates to a nozzle replacement type 3D printer head assembly, specifically, in a nozzle replacement type 3D printer head assembly, a replaceable nozzle through which the filament is discharged; and a nozzle inserted so that the nozzle is coupled to the 3D printer Nozzle housing; consisting of, the nozzle is a conical shape, the head portion is discharged the filament is gradually sharpened end portion; and the body portion is inserted into the nozzle housing protruding in a hexagonal shape of a certain height from the head portion; And the Consisting of a cylinder having a certain height and extending from the body, the cylinder having a certain height is formed with different diameters, and the tail is inserted into the nozzle housing composed of two stages; and the nozzle housing is a hexagonal column so that the body of the nozzle is inserted. The first catching jaw is indented at a predetermined depth into a shape, and the nozzle is provided at one side of the second catching jaw and the first catching jaw that are indented in two steps corresponding to the shape of the tail from the first catching jaw so that the tail of the nozzle is inserted. Nozzle inserting part consisting of a heat-supplying power supply terminal inserted in a certain depth so that the heat-supplying power terminal coupled to the body portion is inserted; And a locking device for fastening a part of the nozzle inserted in the nozzle-inserting part so as not to escape from the nozzle housing; It is proposed that the nozzle body is inserted into the nozzle insertion portion and the tail portion is inserted, and the inserted body portion is fastened so that the nozzle is not separated from the nozzle housing by the locking device portion or is easily separated when the nozzle is replaced.

Patent invention 003 relates to a nozzle assembly for a three-dimensional printer, and a predetermined hollow portion is formed along the longitudinal direction inside to provide a movement path of a printing material for a three-dimensional printer that flows through an inlet on one side of the hollow portion, and is made of a metal material. Barrel structure provided; A nozzle connected to a lower end of the barrel structure and having an ejection space formed therein connected to an outlet on the other side of the hollow; An induction coil spaced apart at a predetermined distance from the outer circumferential surface of the barrel structure and wound around the outside of the barrel structure; And a power supply module that applies a high frequency current to the induction coil.

Patent Invention 004 relates to a nozzle structure and a control method for 3D printing viscosity control of liquid ink, and prevents the destruction of functional (anti-inflammatory, anti-obesity, anti-obesity, etc.) functional components that are weak to heat during 3D printing. will be. Specifically, the jungtang container; A food ink nozzle that is injected into the hot water container and insertable into the hot water container to prevent destruction of functional components; It has been proposed to be made to include; a heating wire surrounding the outer bath vessel.

KR 10-1765055 B1 (Registration date July 31, 2017) KR 10-1776904 B1 (Registration date September 04, 2017) KR 10-2017-0077301 A (published July 6, 2017) KR 10-2018-0126845 A (Public date: November 28, 2018)

The present invention is an invention for a mixing nozzle of a 3D printer, and aims to continuously manufacture products of various colors during product processing.

The present invention is an invention for a mixing nozzle, specifically formed in plural, and each powder pellet (P) is accommodated in the powder tank (100);, the color pellets are supplied, mixed and dissolved from each powder tank Chamber 200; is coupled to the mixing chamber, the hole is formed of a discharge port 300; is made of a configuration comprising a.

The present invention is an invention for a mixing nozzle, specifically formed in plural, in the powder tank, mixing chamber, and ejection outlet presented above, accommodated inside the mixing chamber, and a stirring screw 210; inside the mixing chamber container It is made of a configuration comprising a; heating device 220 located in the.

The present invention is an invention for a mixing nozzle, and is specifically formed in plural, and in the powder tank, mixing chamber, and ejection outlet presented above, a fixing unit 410 for fixing the mixing chamber and ejection opening; and moving the fixing unit It consists of a configuration comprising an actuator (420);, an operation controller (430) for controlling the operation of the actuator.

The present invention is an invention for a mixing nozzle, and is specifically formed in plural, in the powder tank, mixing chamber, and ejection port presented above, is formed on the outer periphery of the ejection port, and rotates a heating bracket 510; and the heating bracket It is composed of a configuration including a, and a heating rod 520 for dissipating heat; and a heating controller 530 for selectively controlling power supply to the heating rod.

The mixed nozzle of the present invention is a nozzle used in a 3D printer, and has an effect of supplying molten fillets.

The mixing nozzle of the present invention has a mixing chamber that accommodates a plurality of color pellets, and melts the pellets by a stirring screw and a heating device inside the mixing chamber, so that various colors can be easily implemented.

The mixing nozzle of the present invention forms a heating rod, and the heating rod does not interfere with the nozzle moving direction, enters the nozzle inlet and preheats it, heats the rear end of the nozzle to post-process the surface of the finished product, and separates the contact layer from layer to layer. It has the effect of preventing.

1 is a conceptual diagram of a pellet moving path and arrangement of the mixed nozzle of the present invention.
Figure 2 is a mixed nozzle and quantitative supply arrangement of the present invention.
3 is a conceptual diagram of a powder tank consisting of a pellet container and a fastener of the present invention.
Figure 4 is a layout and operation of the discharge collection unit of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail in order to describe in detail that a person skilled in the art to which the present invention pertains can easily implement the present invention.

The numbers cited in the examples below are not limited to the targets of citation and may be applied to all examples. Objects exerting the same purpose and effect as the configuration presented in the Examples correspond to equivalent substitution objects. The higher concept presented in the examples includes lower concept objects that are not described.

[Example 1-1] The present invention is an invention for a mixed nozzle, specifically formed in plural, and each powder pellet (P) is accommodated in the powder tank (100);, each color pellet from the powder tank Supply, mixing and dissolving the mixing chamber (200); It is combined with the mixing chamber, the hole is formed of a discharge port (300); consists of a configuration comprising a.

The present invention relates to a 3D printer nozzle. Conventional 3D printers are supplied with wire-shaped filaments, and when changing the color, the color must be changed by replacing the filament. In addition, it has the disadvantage of producing products only with the color of the filament. However, the present invention can implement a variety of colors without replacing a plurality of colors (materials). Specifically, a plurality of powder tanks are formed, and the powder tanks are made of respective colors and plastic pellets are accommodated. Each color is composed of three primary colors, and is made of pellets of a small size. The mixing chamber is supplied with pellets of a small size, and the pellets are melted inside. The color of the melted pellets is generated according to the input amount, and the color of the molten plastic is ejected through the spout to produce a three-dimensional workpiece.

[Example 1-2] The present invention is an invention for a mixing nozzle, and in Example 1-1, a supply pipe 310 communicating the powder tank and the mixing chamber; and formed in the supply pipe, respectively. It is made of a configuration comprising a; quantitative supply device for quantitative supply;

Each color pellet is supplied through a supply pipe, and a quantitative supply device controls the amount of pellets fed into the mixing chamber. In order to make the desired color, the color pellets of the three primary colors are adjusted to a certain ratio, and this is done in a quantitative supply device. In order to supply the color pellets in the powder state, the quantitative supply device rotates the spiral supply screw 321 at a predetermined rotation amount to input the color pellets.

[Example 1-3] The present invention relates to a mixing nozzle, and in Example 1-1, the mixing chamber and a spout are formed integrally.

[Example 1-4] The present invention relates to a mixing nozzle, and in Example 1-1, the inside of the mixing chamber is formed into a cone-shaped space.

It is preferable that the mixing chamber and the spout of the present invention are formed in an integral or separate form. In addition, the mixing chamber and the ejection opening are in communication with each other, and the material melted by the pressure inside the mixing chamber is ejected to the ejection opening. In order to concentrate the ejection pressure, the mixing chamber is preferably formed in a cone shape.

[Example 1-5] The present invention is an invention for a mixed nozzle, and in Example 1-1, the powder tank is formed of a transparent material.

Preferably, the powder tank is identifiable by a user from the outside. Therefore, it is easy to recognize the amount of use, easily replace if necessary, and to determine the expected replacement point. Alternatively, a partial transparent window may be formed. As another embodiment, a sensor for detecting the amount of pellets may be installed to automatically generate a warning through an alarm.

[Example 1-6] The present invention is an invention for a mixing nozzle, and in Example 1-1, the powder tank is a pellet container 110 containing color pallets; and a fastener to which the pellet containers are selectively combined. (120); includes.

The pellet container of the present invention is manufactured in a cartridge form, and can be replaced by a cartridge replacement form. To achieve this, the pellet container forms a fastener, and the pellet container can be coupled to the fastener to supply color pellets. The fastener and the pellet container may take the form of a groove and a protrusion, or may take the form of a threaded connection.

[Example 1-7] The present invention is an invention for a mixing nozzle, and in Example 1-2, a preheater 330 mounted to the metering supply device.

The color pellets supplied to the mixing chamber can be completely melted in the chamber, but it is preferable that a certain amount is pre-melted before being supplied to the chamber. To realize this, a preheater is mounted on the quantitative supply device, and the preheater melts the pellets. Therefore, the load change inside the chamber is easily allowed, and the color change can be flexibly adjusted.

[Example 2-1] The present invention is an invention for a mixing nozzle, and in Example 1-1, it is accommodated inside the mixing chamber, and a stirring screw 210; a heating device located inside the mixing chamber container (220); is made of a configuration comprising a.

[Example 2-2] The present invention is an invention for a mixing nozzle, and in Example 2-1, the stirring screw is formed of a spiral plate material, and is formed in the same shape as the mixing chamber internal shape. .

[Example 2-3] The present invention is an invention for a mixing nozzle, and in Example 2-2, a stirring shaft 230 formed at the center of the stirring screw 231; and a stirring motor coupled with the stirring shaft ( 240).

[Example 2-4] The present invention is an invention for a mixing nozzle, and in Example 2-1, an air supply port 250 formed in the mixing chamber and through which air pressure is ejected; a container shape, and the ejection port and The mixing chamber enters, and includes a discharge collecting portion 260 for receiving the discharge.

[Example 2-5] The present invention is an invention for a mixed nozzle, and in Example 2-4, it is formed on the lower portion of the discharge collecting body, and the discharge collecting box 261 is slidingly separated from the discharge collecting portion. do.

The mixing chamber of the present invention receives each color pellet, and then, by means of a heating device, heats the pellet, and the heated pellet is mixed in color in a molten state. The heated pellet is mixed by rotating the stirring screw of the stirring shaft combined with the stirring motor, and extruded through a spout. Extruded pellets are used as materials for manufacturing products. As another embodiment, when changing the color, the pellet in the molten state must be discarded, and for this, an exhaust trap is formed. The nozzle body composed of the mixing chamber and the spout is moved to the discharge collecting portion, and the remaining molten pellets of the mixing chamber and the spout are temporarily discharged from the discharge collecting portion. To this end, the stirring shaft rotates at a high speed, and compressed air is supplied from the air supply unit. Therefore, the molten pellet inside the mixing chamber is ejected to the ejection opening, and the ejected molten pellet is discarded to the discharge collection part. Therefore, the mixing chamber and the spout are emptied, and again, a certain amount of the adjusted pellet is supplied to change the material to a new color. The air supply port is supplied with air pressure, and a compressor and a pneumatic chamber are formed in the air supply port for generating air pressure. The waste pellets collected in the discharge collecting part can be discharged to the outside through the discharge collecting box. The discharge collection box is transparently formed to be observable from the outside. By detecting the internal capacity with a sensor, a warning can be sent to the outside. The warning may be a buzzer or LED lamp.

[Example 3-1] The present invention is an invention for a mixing nozzle, and in Example 1-1, a fixing part 410 for fixing the mixing chamber and a spout, and an actuator 420 for moving the fixing part ;, Operation controller 430 for controlling the operation of the actuator; It consists of a configuration comprising.

The mixing chamber and the spout of the present invention are formed in one block form, which is fixed to the fixing part. The fixing part forms a clip, and the nozzle part (mixing chamber and ejection port) can be selectively detachable. Conventional 3D printers enable Cartesian motion. The fixing part of the present invention includes actuators that can be transported in two or three axial directions. The actuator is conveyed by an operation motor 421, and the operation motor is controlled by an operation controller. Therefore, the fixing unit may implement a three-dimensional shape motion. The fixing unit, the actuator, and the operation controller are accommodated inside the integral enclosure 400. The powder tank presented above may be accommodated in one enclosure, or formed in separate positions, and supplied to a plurality of enclosures.

[Example 4-1] The present invention is an invention for a mixed nozzle, and in Example 1-1, it is formed on the outer periphery of the spout, and rotates a heating bracket 510; is combined with the heating bracket and heats. It comprises a configuration comprising a; heating rod 520 for emitting;, a heating controller 530 for selectively controlling the power supply to the heating rod.

[Example 4-2] The present invention relates to a mixed nozzle, and in Example 4-1, a first operation device 541 that imparts rotational force of the heating bracket.

[Example 4-3] The present invention is an invention for a mixed nozzle, and in Example 4-1, the heating rod is formed of a nicrium material.

[Example 4-4] The present invention is an invention for a mixed nozzle, and in Example 4-1, the heating rod is formed in a bent shape.

[Example 4-5] The present invention is an invention for a mixing nozzle, and in Example 4-1, it is mounted on the first operating device, and a second operating device 542 that rotates in a direction perpendicular to the axial direction of the rotational force );.

Since a typical 3D printer is manufactured in a stacked form, a step between layers is formed, and since melting points are different, mechanical properties between layers are weak. To overcome this, the present invention forms a heating rod. The heating rod takes the shape of an iron rod protruding from the outer circumference based on the disintegration opening. The heating shelf operates simultaneously according to the movement of the nozzle to avoid interference of the work piece. In addition, the heating rod has an effect of improving the adhesiveness with the melted pellets ejected by preheating the already processed position by giving an instantaneous high temperature. In addition, it is possible to prevent the separation and breakage between layers by heating the surface of the product produced by ejection, post-processing the surface level difference, or raising it to a recrystallization temperature and cooling it. The heating rod is made of nicrium wire and takes the shape of a rod. The movement of the heating rod consists of a heating bracket. The heating bracket rotates in the circumferential direction of the spout by the first actuator, and also rotates in the axial vertical direction of the spout by the second actuator. The heating bracket is preferably operated by screw rotation or belt rotation.

100: powder tank 110: pellet container
120: fastener 200: mixing chamber
210: stirring screw 220: heating device
230: stirring shaft 231: stirring screw
240: stirring motor 250: air supply port
260: discharge collection unit 261: discharge collection box
300: spout 310: supply pipe
320: quantitative supply device 321: supply screw
330: preheater 400: housing
410: fixing part 420: actuator
421: operation motor 430: operation controller
510: heating bracket 520: heating rod
530: Heating controller 541: First operating device
542: Second operating device

Claims (4)

In the mixed nozzle,
It is formed in a plurality, each powder pellet (P) is accommodated in the powder tank 100;,
Mixing chamber 200 in which color pellets are supplied, mixed and dissolved from each powder tank;
It is coupled to the mixing chamber, the mixing nozzle comprising a; vent hole 300 is formed.
The method according to claim 1,
It is accommodated inside the mixing chamber, the stirring screw 210;,
A mixing nozzle comprising; a heating device 220 located inside the mixing chamber container.
The method according to claim 1,
Fixing unit 410 for fixing the mixing chamber and the spout;,
Actuator 420 for moving the fixing portion;,
Mixing nozzle comprising a; operation controller 430 for controlling the operation of the actuator.
The method according to claim 1,
It is formed on the outer periphery of the spout, the rotating heating bracket 510;,
It is combined with the heating bracket, the heating rod 520 for dissipating heat;,
Mixing nozzle comprising a; heating controller 530 for selectively controlling the power supply to the heating rod.

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