KR200489152Y1 - MultI-filament supply device for 3d printer - Google Patents

Abstract

The present invention relates to a multicolor filament feeder of a 3D printer.
According to the present invention, the inner and outer motors interposed with the filaments of the desired color (for example, red) interposed with three colors of the filaments wound around the supply reel are placed in the distribution port, respectively, and supplied to the head assembly to supply red Melt the filament and shape it, and then operate the inner and outer motors in reverse direction, place the red filament into the upper distribution port, and stably supply the different color filament in order to melt the three-dimensional molding into the three color filaments. It can be laminated molding, and can also be supplied to the three-dimensional molded article molded in three colors to cool it quickly to provide an effect of improving the quality of the product (molded product).

Description

Multi-color filament supply device for 3D printer {MultI-filament supply device for 3d printer}

The present invention relates to a multi-color filament feeder of a 3D printer, and in detail, the three-color filament wound around the supply reel is sequentially drawn out and up by the rotational force of the motor and fed to the nozzle of the head unit to be melted. The three-dimensional molded article is configured to be laminated by multiple colors.

In general, a 3D printer converts a three-dimensional shape modeled by software such as a CAD system into slice data divided into a plurality of thin cross-sectional layers, and then uses it to form a plate sheet and stack it to complete a product. Such 3D printers include gypsum, metal powder, and the like, resins in which photocurable plastics are melted, and thermoplastic filaments.

The thermoplastic filament method is a method of extruding, laminating, and molding a filament, which is a thermoplastic resin. When the filament is supplied through a feeder of an extruder, the supplied filament is extruded in a liquid state through a nozzle heated to a temperature capable of melting the filament. Laminated one by one.

The extruder of the above-described 3D printer has a problem in that there is a limitation in using one material in one feeder, using various materials, implementing various colors, and changing the diameter of the nozzle.

Recently, however, multicolor 3D printers have been developed to selectively produce a plurality of products using a plurality of filaments.

In this prior art, Korean Patent Publication No. 10-169194 (2016.11.24. Notification) is provided.

This prior art comprises a fixed frame for supporting a plurality of filaments; A moving frame installed on the fixed frame to be movable in the front and rear directions; A transfer unit which is installed at the inner lower center of the fixed frame to supply and feed the filament; A pressurizing unit installed under the moving frame to press a selected filament among a plurality of filaments; A cutter installed at one side of the lower end of the moving frame to cut the filament; Melting nozzle which is installed on one side of the moving frame to melt the filament to be supplied, comprising a pressing space portion is provided in the fixed frame, the projections, inclined surface, top surface, inclined surface at a position corresponding to the filament on the inner upper surface of the pressing space , And are sequentially formed in the order of the protrusions, the pressurizing unit pressurizes the filament at the protruding position, and the pressurizing unit does not pressurize the filament at the upper end position.

However, the prior art configured as described above, on the upper part of the filament mounted on the feed roller of the feed unit rotatably arranged as a rotation axis in the fixed frame, the pressure roller of the pressure unit provided in the moving frame moved in the front and rear direction is seated and the filament is drawn out. As a result, the output power to the front, that is, the melt nozzle area is reduced, and two or more of the plurality of filaments are cut and introduced into the melt nozzle and melt mixed to be discharged, so that the color of the filaments is not easily mixed to produce a desired color product. There was a problem that was not easy.

The present invention was devised to solve the problems of the prior art, and the object of the present invention is to draw out three colors of the filament wound around the supply reel in turn downwards by the rotational force of the inner and outer motors, the nozzle of the head assembly It is to provide a multi-color filament feeder of the 3D printer configured to laminate the three-dimensional molded article in turn by sequentially melted by supplying the melt, and then sequentially moved upwards to laminate the three-dimensional molded article in three colors.

Another object of the present invention is to improve the quality of the product by being able to cool the multi-dimensional three-dimensional molded article is completed.

The problem solving means for achieving the above object is a frame consisting of a horizontal top support, horizontal top and bottom support, horizontal bottom and bottom support and horizontal bottom support, and a vertical finish plate to the outside of the angle maintenance material assembled by the angle holding material and; A moving member coupled to the inner side of the vertical finish plate to be movable up and down (Z axis) as a moving means; A head assembly which is movably connected horizontally (X axis) and vertically (Y axis) as a link member to the moving member to melt the three colors of the filaments and laminate the three-dimensional molded article; A filament supply device mounted on the outer and inner sides of the horizontal upper support to supply and discharge the three colors of filaments to the head assembly; In the 3D printer comprising a control unit for controlling the operation of the moving member, the moving means, the header assembly and the filament feeder by the data of the three-dimensional molding, the filament feeder is fastened to the front of the vertical blocking plate, the top horizontal block A plurality of feed reels mounted on an upper portion of the holder mounted on the upper plate and wound with three colors of filaments; The vertical fixing piece fastened and fixed to the inside of the horizontal upper support and the horizontal lower support of the frame, integrally formed by maintaining the vertical gap inside the vertical fixing piece, the inner through-hole is formed in the corner area, and coupled to the inner surface An inner bracket formed of a horizontal fixing piece in which an outer reinforcing rib having a stepped hole is integrally formed and a central reinforcing rib formed of a large diameter and a small diameter in a central area and integrally formed with a horizontal reinforcing hole; The inner side hole is formed in the corner area to correspond to the inner side hole is fastened and fixed, the inner reinforcement ribs are formed with the engaging projection coupled to the coupling step hole, the central reinforcement rib formed in communication with the installation hole and the installation groove in the central area integrally An outer bracket formed; An inner motor mounted on an outer surface of the horizontal fixing piece of the inner bracket and having an inner tooth roller protruding at a large diameter of a horizontal assembly hole formed in a central reinforcing rib, which is arranged on a motor shaft of a front end; An outer motor mounted on an outer surface of the outer bracket and having an outer tooth roller positioned at an installation hole of a central reinforcing rib so as to maintain a distance from the inner tooth roller, and which the outer tooth roller is arranged on the motor shaft of the front end; It is provided so as to communicate between the head assembly and the outer bracket is characterized in that consisting of a distribution port for sequential supply and discharge of the three-color filament to the head assembly by the operation of the inner, outer motor.

According to the present invention, the inner and outer motors interposed with the filaments of the desired color (for example, red) interposed with three colors of the filaments wound around the supply reel are placed in the distribution port, respectively, and supplied to the head assembly to supply red Melt the filament and shape it, and then operate the inner and outer motors in reverse direction, place the red filament into the upper distribution port, and stably supply the different color filament in order to melt the three-dimensional molding into the three color filaments. It is possible to laminate molding, and also to supply the wind to the three-dimensional molded area molded in three colors to cool it quickly, thereby providing an effect of improving the quality of the product (molded product).

1 and 2 are a perspective view showing a 3D print equipped with a multi-color filament supply apparatus according to the present invention.
Figure 3 is a block diagram showing a moving member for the multi-color filament supply apparatus of the 3D printer according to the present invention.
4 and 5 are enlarged views of portions "A" and "B" of FIG. 2, and showing the moving means for the multicolor filament supply apparatus of the 3D printer.
6 to 9 is a block diagram showing a multi-color filament supply apparatus of the 3D printer according to the present invention.
10 and 11 is a block diagram showing a filament supply apparatus for a multi-color filament supply apparatus of the 3D printer according to the present invention.
12 and 13 is an operating state diagram for the multi-color filament supply apparatus of the 3D printer according to the present invention.

Hereinafter, an embodiment according to the present invention with reference to the accompanying drawings in detail as follows.

1 and 2 of the accompanying drawings is a perspective view showing a 3D printing equipped with a multi-color filament supply apparatus according to the present invention, Figure 3 shows a moving member for the multi-color filament supply apparatus of the 3D printer according to the present invention 4 and 5 are enlarged views of portions “A” and “B” of FIG. 2, showing the moving means of the multicolor filament feeder of the 3D printer, and FIGS. 6 to 9 It is a block diagram showing a head assembly for a multi-color filament supply device of the 3D printer according to the invention, Figure 10 and Figure 11 is a block diagram showing a filament supply device for the multi-color filament supply device of the 3D printer according to the present invention.

As shown in Figures 1 to 11, the 3D printer according to the present invention is the horizontal top support 12, the horizontal top and bottom support 13 is assembled and maintained at the same angle (60 °) by the angle holding material (20) A frame 10 comprising a horizontal lower upper support 14 and a horizontal lower support 15 and a vertical finishing plate 16 vertically finished on the outer side of the angle maintaining member 20; Moving members 40 coupled to inner surfaces of the vertical finishing plate 16 so as to be movable upward and downward (Z-axis) as moving means 60; The movable member 40 can be moved horizontally (X-axis) and vertically (Y-axis) as a link member 130 and is connected inclined downwardly to sequentially melt the three-colored filaments 3 to three-dimensional three-dimensionally. A head assembly 70 for laminating the molding 1; A filament supply device (150) mounted on the outer and inner sides of the horizontal upper support (12) to sequentially supply and discharge the three colors of the filaments (3) to the head unit (90) of the head assembly (70); The control unit 400 for controlling the operation of the moving member 40, the moving means 60, the header assembly 70 and the filament supply device 150 by the data of the input three-dimensional molding.

The angle retaining material 20 has a vertical fitting groove 21 is formed on the inside, the upper pedestal 12, the upper lower pedestal 13, the lower upper pedestal 14 and the lower side to both sides of the vertical fitting groove 21 Both ends of the pedestal 15 are assembled with a pedestal assembly end 22 is assembled in an equilateral triangle, respectively, the blocking plate assembly end 23 in which both ends of the vertical blocking plate 30 of the transparent material in close contact with both sides of the pedestal assembly end 22. It is formed of the upper end portion 24, the upper lower portion 25, the lower upper portion 26 and the lower portion (27).

The vertical blocking plate 30 is made of a transparent synthetic resin material, and the blocking plate assembly end of the upper portion 24, the upper lower portion 25, the lower upper portion 26 and the lower portion 27 constituting the angle retaining material 20 Both ends are coupled between the 23 and the vertical finish plate 16, and are fastened and fixed to the vertical finish plate 16, respectively, to block three surfaces of the frame 10. The door 33 is provided.

The vertical guide bar 42 is inserted and fixed between the upper end portion 24, the upper lower portion 25, the lower upper portion 26 and the vertical fitting groove 21 of the lower end portion 27 of the angle maintaining member 20, and vertical The upper reinforcing bar 28 is fixed to the inside of the upper end of the guide bar 42, and the upper part 24 of the angle maintaining member 20, the upper reinforcing bar 28, and the upper horizontal finishing band 12 are horizontally upper part of the upper material. The blocking plate 35 is fastened and fixed, and the lower horizontal blocking plate 36 is fastened and fixed to the lower upper part 26 and the lower upper support 14 of the angle maintaining member 20, and the lower horizontal blocking plate 36. A base 2 on which a three-dimensional molded product 1 is laminated is formed on an upper surface thereof, and a lower horizontal blocking plate 37 is fastened and fixed to a lower portion 27 and a lower lower portion 15 of the angle maintaining material 20. The frame 10 is sealed.

At this time, the lower outer surface of the vertical blocking plate 16 is provided with a ventilation fan 39 for discharging the noise and odor generated in the sealed interior.

The movable member 40 is inserted into and fixed in the vertical fitting groove 21 of the upper end portion 24, the upper lower portion 25, the lower upper portion 26 and the lower portion 27 of the angle maintaining member 20, the vertical finish plate (16) vertical guide bars 42 which are fastened and fixed respectively by maintaining the same height perpendicular to the inner surface; A moving block 44 having a guide moving groove 44a formed therein so as to be inserted into the vertical guide bar 42 so as to be movable upward and downward; It is fastened and fixed to the front of the moving block 44, the rubber belt 46 is made of a carriage 50 is fixed.

The carriage 50 is fastened and fixed to the front surface of the moving block 44, the vertical fixing piece 52 formed to correspond to both sides of the front surface, the protrusion piece 51 having an assembly hole (51a) integrally protruded; The upper vertical piece 54 and the lower vertical piece (1) which are integrally formed by maintaining the vertical and horizontal intervals between the protruding pieces 51 and are fixed to the upper cutting surface 46a and the lower cutting surface 46b of the rubber belt 46. 55).

The moving means 60 is fastened and fixed to the lower portion of the lower horizontal blocking plate 36, the fixing bracket 62 is formed through the assembly hole (62a); A driving motor 64 mounted to the inside of the fixing bracket 62 and having a pulley 63 rotating at an end thereof through the assembly through hole 62a; The upper and lower cutting surfaces 46a and 46b are wound between the pulley 63 and the upper support roller 66 rotatably fixed to the upper end of the vertical finishing plate 16, and the protruding pieces 51 of the carriage 50. It consists of a rubber belt 46 is inserted and fixed in the vertical and horizontal intervals between the upper and lower vertical pieces 54, 55.

At this time, the sensing switch 67 is installed on the vertical support 16, respectively, to limit the upper movement of the carriage 50. That is, when the carriage 50 is moved upward and touched the sensing switch 67, the operation of the driving motor 64 is stopped so that the carriage 50 does not move.

The head assembly 70 has a square hole 72a formed in a central region, a horizontal portion 72 having a lower step assembly hole 72b formed at a corner of the square hole 72a, and an outer peripheral surface of the horizontal portion 72. A lower block 74 integrally formed at the same angle to the lower block 74 and having a plurality of horizontal protrusions 73 formed with a recessed groove 73a; The upper step assembly hole 75a is formed at the edge corresponding to the lower step assembly hole 72b of the horizontal portion 72, and is assembled to maintain the vertical space 80a as the space 80, and the upper assembly hole 75b in the central area. An upper block 75 having a plurality of assembling through holes 75c formed on an outer circumferential surface of the upper assembling hole 75b; The upper stepped hole 76a is formed to correspond to the upper assembly hole 75b of the upper block 75 and is fastened and fixed by the fastening bolt 77, and the upper stepped assembly hole 76b to correspond to the assembly through hole 75c in the center area. Is formed, the upper block 76 made of a triangle; Head unit 90 for laminating the three-dimensional molded article 1 by sequentially melting the three-color filament (3) to be assembled and supplied in the vertical space (80a) between the lower block 74 and the upper block (75) )

The space 80 includes a space retaining rod (82) formed with a screw hole (82a) coincident with the lower step assembly hole (72b) and the upper step assembly hole (75a); The fastening bolt 84 is fastened to the screw hole 82a through the lower step assembly hole 72b and the upper step assembly hole 75a.

The head unit 90 has an upper outer circumference coupled to an upper assembly hole 75b of the upper block 75 and an upper step assembly hole 76b of the upper block 76, and an insertion tube 91 is inserted into a central region. Tube insertion hole (93a) is formed through, the screw portion (93b) is formed at the bottom, a plurality of heat sinks (93c) are formed at equal intervals on the outer periphery to block the heat of the heater 92 is transferred to the top A heat dissipation casing 93; A screw hole 95a is formed to be detachably fastened to the threaded portion 93b of the lower portion of the heat dissipation casing 93, and a filament supply hole 95b is formed to communicate with the screw hole 95a. A nozzle block 95 to which a heater 92 for melting the metal is coupled; The nozzle 97 is formed at the lower end of the nozzle block 95, the discharge hole 97a through which the filament 3 is discharged in communication with the filament supply hole 95b, and the molten filament 3 is discharged downward. and; A heat dissipation fan 99 for cooling the nozzle block 95 and the nozzle 97 detachably fastened to the outside of the heat dissipation plate 93b of the heat dissipation casing 93 and heated by the heater 92; The fastening bolt 84 is fastened and fixed to the upper step assembly hole (75a) of the upper block 75 is formed of a heat radiation fan 100 for cooling the three-dimensional molded article (1) laminated on the base (2).

At this time, the heater 92 is the temperature is detected by the temperature sensor (92a) is installed outside the nozzle block 95 is maintained for a set time and temperature.

The molded heat dissipation fan 100 has an inner bracket 110 which is fastened and fixed to the upper step assembly hole 75a of the upper block 75 by a fastening bolt 84; It is formed integrally on the outside of the inner bracket 110, the mounting portion 121 is formed with a mounting groove 121a is inserted into the heat dissipation fan 102 on the top, and the air distribution hole in communication with the mounting groove (121a) ( 122a) is formed, the lower end is located in the square hole (72a) formed in the horizontal portion 72 of the lower block 74, the air supply duct for supplying the wind of the heat radiation fan 102 to the three-dimensional molding (1) It consists of a heat dissipation fan holder 120 made of (122).

The link member 130 is connected to the front of the protrusion piece 51 of the carriage 50 by the upper pivot pin 131 so as to be rotatable, and the lower horizontal projection 73 forming the lower block 74 It is composed of a pair of rotating links 140, 141 connected to the recess 73a by the lower pivot pin 132 and moving up and down, respectively, and the head assembly 70 horizontally (X-axis) and vertical ( Y-axis) so as to be movable each.

The filament supply device 150 is fastened to the front of the vertical blocking plate 30, mounted on the top of the cradle 151 seated on the upper horizontal blocking plate 35, a plurality of three-color filament (3) wound Supply reel 152; The vertical fixing piece 161 which is vertically fastened and fixed vertically inside the horizontal upper stand 12 and the horizontal upper bottom support 13 of the frame 10, and vertically integrated by maintaining the vertical gap inside the vertical fixing piece 161 The inner through hole 162 is formed in the corner region, and the plurality of outer reinforcing ribs 163 having the coupling step hole 163a formed on the inner side of the inner through hole 162 are integrally formed in the central region. Inner bracket 160 made of a large diameter (164a-1) and a small diameter (164a-2) consisting of a horizontal fixing piece 165 integrally formed with a central reinforcing rib 164 formed horizontal communication hole (164a) to communicate with and ; The outer through hole 171 is formed to correspond to the inner through hole 162 of the horizontal fixing piece 161 in the corner area is fastened and fixed by the fastening bolt 172, the coupling stepped hole (163a) of the outer reinforcing rib 163 An inner reinforcing rib 173 having a coupling protrusion 173a to be coupled to each other is formed, and an outer bracket in which a central reinforcing rib 174 formed to communicate with an installation hole 174a and an installation groove 174b in a central area is integrally formed. 170; The inner toothed roller 182, which is mounted on the outer surface of the horizontal fixing piece 165 of the inner bracket 160 and protrudes to the large diameter 164a-1 of the horizontal assembly hole 164a formed in the central reinforcing rib 164, is distal. A forward and reverse rotation of the inner motor 180 formed on the motor shaft 181; The outer tooth roller 192 mounted on the outer surface of the outer bracket 170 and positioned in the installation hole 174a of the central reinforcing rib 174 is maintained so as to be spaced apart from the inner tooth roller 182. It consists of a forward and reverse rotation of the outer motor 190 built in 191.

On the other hand, a plurality of upper distribution fittings 220, each of which is coupled to the lower portion of the lower guide tube 201 is screwed to communicate with the upper portion of the distribution port 300, the lower portion of the heat dissipation casing (93) The lower part fitting 240 is coupled to the upper tube inserting hole 93a and the connecting tube 230 coupled to the upper portion, and the three-color filaments 3 are selectively supplied to form the three-dimensional molding 1. do.

The distribution port 300 is formed with a coupling hole 301 is coupled to the plurality of upper distribution feeding 220 so that the three colors of the filament (3) at the top, one of the three colors of the filament (3) A body 310 having an inverted triangular space portion 304 having a wide upper portion and a lower portion gradually formed with a coupling hole 302 to which one lower double feeding 240 is coupled to supply a filament thereof; Screw holes 321 and 331 are formed in communication with the coupling holes 301 and 302 at the upper and lower portions of the body 310 to insert the upper distribution feeding 220 and the lower distribution feeding 240 to be screwed together. An upper int 320 and a lower int 330; It is formed integrally in communication with the screw hole 321 of the upper inst 320 in the upper portion of the space 304 of the body 310 to guide one of the filaments of the three colors of the filament (3) to the lower double feeding (240) Guide holes 351 for forming a plurality of distribution guide protrusions 350 are formed.

In addition, the inner motor 180 and the outer motor 190 are configured in opposite rotation directions so that an outer circumferential surface is in close contact between the inner tooth roller 182 of the inner motor 180 and the outer tooth roller 192 of the outer motor 190. As the pushed and pulled filament (3) is pushed up or down, the output speed increases upwards or downwards, and the filament made of thin plastic thread itself is ground and worn out (the friction is so large that the filament is not divided because the push and pull is carried out with only one direction force). will be.

In addition, the three-color filament (3) wound on the supply reel 152 passes through the threaded hole (170a) of the outer bracket 170, the filament supply hole (210a) of the vertical guide rod 210 to the inner tooth roller ( 182 and the outer toothed roller 192, respectively, and pass through the lower fitting 200 and the upper distribution feeding 220 of the upper portion of the distribution port 300 in the space 304 of the distribution port (300) The bottom is positioned respectively.

The control unit 400 is mounted to the vertical blocking plate 30, and the moving member 40, the moving unit 60, the header assembly 70 and the filament supply device 150 by the data of the input three-dimensional molding To control the operation.

Referring to the operation state for the 3D printer according to the present invention configured as described above are as follows.

When power is supplied to the control unit 400 as shown in FIG. 1, the moving member 30, the moving unit 50, and the filament supply device 150 are sequentially formed by data of the three-dimensional molded product input to the control unit 300. The three-dimensional molded article 1 of three colors is laminated by molding.

2 and 10, the feeder 152 is fastened to the front of the vertical blocking plate 30 and wound on the cradle 151 mounted on the upper horizontal blocking plate 35. The three-color filament 3 passes through the screw hole 170a of the outer bracket 170 and the filament supply hole 210a of the vertical guide rod 210, and the inner tooth roller 182 of the inner motor 180. And spaced between the outer toothed rollers 192 of the outer motor 190, respectively, passing through the lower fitting 200 and the upper dispensing feeding part 220 above the dispensing port 300. 304, the state where the lower part is respectively maintained is maintained (refer FIG. 8).

In this state, when the inner and outer motors 180 and 190 corresponding to the filament 3 of the desired color (for example, red) among the three colors of the filaments 3 are operated as shown in FIG. 11, the inner tooth roller 182 is operated. And the outer tooth roller 192 rotate clockwise and counterclockwise, so that the red filaments 3 respectively positioned between the inner tooth roller 182 and the outer tooth roller 192 move downward. do.

As a result, the red filament 3 wound around the supply reel 152 is gradually released, and passes through the lower fitting 200 and the upper distribution feeder 220 above the distribution port 300 to provide a space of the distribution port 300. The upper end of the filament (3), respectively located in the portion 304, through the lower portion feeding 240 and the connecting tube 230 of the lower portion of the distribution port 300, the upper part constituting the head assembly 70 It is supplied into the insertion tube 91 of the heat dissipation casing 93 coupled to the upper assembly hole 75b of the block 75 and the assembly through hole 75c of the upper block 76, and the screw portion 93a of the heat dissipation casing 93 is provided. Through the filament supply hole (95b) of the nozzle block (95) fastened to the) is supplied to the discharge hole (97a) of the nozzle 97, while being melted by the heater 92 is supplied to the nozzle block (95), The molten red filament 3 is laminated on the base 2 (see Figs. 6 to 9).

In this way, when the red filament 3 is supplied to the discharge hole 97a of the nozzle 97 by the operation of the filament supply device 150 and is melted by the heater 92, the input unit 3 inputs to the control unit 400. The moving means 60 is operated by the data signal of the dimensional molding to move the head assembly 70 up, down (Z-axis), horizontal (X-axis) and vertical (Y-axis), the lower horizontal blocking plate (37) In the upper part of the base 2 provided on the upper surface, the molten filament is laminated-molded.

In this case, when the head assembly 70 is moved in the Z-axis, as shown in FIGS. 12 and 13, three driving motors are mounted on the outside of the fixing bracket 62 constituting the moving means 60, respectively. 64 is rotated in a forward rotation (clockwise), and the upper support roller 66 of the upper end of the pulley 63 and the vertical finish plate 16 positioned through the assembly through hole (62a) of the fixing bracket (62). The rubber belt 46 wound between the upper and lower cutting surfaces 46a and 46b is inserted between the protruding piece 51 of the carriage 50 and the upper and lower vertical pieces 54 and 55 to rotate. Will move to the top.

At the same time, the movable block 14 moves upward along the vertical guide bar 42 fixed to the inner side of the vertical finishing plate 16 as the guide moving groove 44a, and is fastened and fixed to the front of the movable block 44. The carriage 50 is moved upward.

Accordingly, the upper end is rotatably connected to each other by the upper pivot pin 131 on the front surface of the protruding piece 51 of the carriage 50, and the lower pivot pin 132 is connected to the recess 73a of the lower block 74. Rotating links 140 and 141 connected to each other are rotated about the upper and lower pivot pins 131 and 132 to move upward, and thus the position of the nozzle 97 is determined, and the lower horizontal blocking plate 37 is provided. On top of the base 2 provided on the upper surface, molten red filaments are laminated and molded.

Meanwhile, when the head assembly 70 is moved in the X-axis or the Y-axis, one of three driving motors 64 mounted on the outside of the fixing bracket 62 constituting the moving means 60 will be described. The dog is stopped, and the two motors operate in the forward or reverse rotation, and the rotary links 140 and 141 move up and down about the upper and lower pivot pins 61 and 62. The head assembly 70 moves in the X-axis or Y-axis, and red filaments are stacked and molded.

In addition, the state in which the head assembly 70 is sequentially moved to the Z-axis, the X-axis, and the Y-axis will be described. The three driving motors 64 mounted on the outside of the fixing bracket 62 are the control unit 300. As the head assembly 70 is moved in the Z-axis, the X-axis, and the Y-axis as sequentially operated by the data of the three-dimensional molded object input to the red filament, the red filament is laminated.

At this time, the heat generated while the filament 3 is melted by the heater 92 is cooled by the wind generated from the heat radiating fan 99 detachably fastened to the outside of the heat sink 93b of the heat radiating casing 93. (See Figure 9)

On the other hand, the sensing switch 67 is provided on the upper portion of the vertical finish plate 16, respectively, to limit the upper movement of the carriage 40. That is, when the carriage 50 is moved upward and touched the sensing switch 67, the operation of the driving motor 64 is stopped and the carriage 50 is not moved, and the lamination of the red filament is completed.

When the laminated molding of the red filament 3 is completed as described above, when the inner and outer motors 180 and 190 corresponding to the red filament 3 are operated in reverse as shown in FIGS. 10 and 11, the inner tooth roller As the 182 and the outer toothed roller 192 rotate counterclockwise and clockwise, the red filament 3 respectively positioned between the inner toothed roller 182 and the outer toothed roller 192 moves upward. Done.

Accordingly, the lower end of the red filament 3 located in the discharge hole 97a of the nozzle 97 has the filament supply hole 95b of the nozzle block 95, the inside of the insertion tube 91, and the lower double feeding 240. When the inside of the space portion 304 of the distribution port 300 through the operation of the inner, outer motor 180, 190 is stopped (see Fig. 8).

Thereafter, when the inner and outer motors 180 and 190 corresponding to the filaments 3 of the desired color (for example, blue or yellow) among the three colors of the filaments 3 are sequentially operated, the red color as described above In the same operation as the filament 3, a blue or yellow filament 3 is laminated on the red filament molding to form a three-dimensional molded article 1 of three colors.

When the molding of the three-dimensional molded product 1 is completed as described above, the wind generated by the operation of the heat dissipation fan 102 constituting the molded heat dissipation fan 100 fastened and fixed to the upper block 75 is supplied to the air supply duct 122. It is supplied to the lower portion, that is to say the three-dimensional molding (1) area to cool the three-dimensional molding (1) quickly.

In the above described the preferred embodiment according to the present invention, but the technical idea of the present invention is not limited thereto, and each component of the present invention is changed or modified within the technical scope of the present invention for achieving the same purpose and effect. Could be.

1: three-dimensional molding 2: base
3: filament 10: frame
20: angle holding member 30: vertical blocking plate
40: moving member 60: moving means
70: head assembly 71: horizontal portion
73: horizontal protrusion 74: lower block
75: upper block 76: upper block
80: space 90: head unit
93: heat dissipation casing 95: nozzle block
87: nozzle 99: heat dissipation fan
100: molding heat dissipation fan 102: heat dissipation fan
110: inner bracket 120: heat dissipation fan bracket
130: link member 150: filament supply device
151: holder 152: supply reel
160: inner bracket 161: vertical fixing piece
163: outer reinforcing rib 163a: coupling step hole
164: center reinforcement rib 164a: horizontal assembly hole
164a-1: Large diameter 164b: Small diameter
165: horizontal fixing piece 170: outer bracket
170a: screw hole 173: inner reinforcing rib
173: engaging projection 174a: installation hole
174b: Installation groove 180,190: Inner and outer motor
182,192: Inner and outer toothed roller 210: Vertical guide rod
210: vertical guide rod 201a: filament supply hole
220,240: Upper and lower partial feeding 300: Distribution port
304: space 310: body
320,330: Upper and lower inlets 321,331: Screw holes
350: guide protrusion 351: guide through

Claims (5)

The horizontal top support 12, horizontal top and bottom support 13, horizontal bottom and bottom support 14 and horizontal bottom support 15, which are assembled by the angle holding material 20, and on the outside of the angle holding material 20 A frame 10 consisting of a vertical finishing plate 16 for finishing; A moving member 40 coupled to the inner surface of the vertical finishing plate 16 so as to be movable up and down by the moving means 60; A head assembly 70 connected to the movable member 40 so as to be movable horizontally and vertically as a link member 130 to melt the three colors of the filaments 3 to form the three-dimensional molded article 1; A filament supply device (150) mounted to the horizontal upper support (12) for supplying and discharging the three colors of the filaments (3) to the head assembly (70); In the 3D printer composed of a control unit 400 for controlling the operation of the moving member 40, the moving means 60, the header assembly 70 and the filament supply device 150,
The filament supply device 150
A plurality of supply reels 152 fastened to the front of the vertical blocking plate 30 and mounted on an upper part of the cradle 151 mounted on the upper horizontal blocking plate 35 to which three filaments 3 are wound;
Vertical fixing piece 161 is fastened and fixed inside the horizontal upper stand 12 and the horizontal upper bottom support 13 of the frame 10, and the vertical fixing piece 161 is formed integrally by maintaining the vertical gap Inner corners 162 are formed in the corner regions, and outer reinforcing ribs 163 having coupling step holes 163a formed on the inner side thereof are integrally formed, and large diameters 164a-1 and small diameters 164a in the central region. An inner bracket (160) consisting of a horizontal fixing piece (165) integrally formed with a central reinforcing rib (164) formed of a horizontal assembly hole (164a) formed therein and communicating therewith;
An outer reinforcing rib 171 is formed and fastened to correspond to the inner through hole 162 in a corner region, and an inner reinforcing rib 173 having a coupling protrusion 173 a coupled to the coupling step hole 163 a is formed. An outer bracket 170 integrally formed with a central reinforcing rib 174 formed to communicate with the installation through hole 174a and the installation groove 174b in a central area thereof;
An inner tooth roller 182 mounted on an outer surface of the horizontal fixing piece 165 of the inner bracket 160 and protruding from the large diameter 164a-1 of the horizontal assembly hole 164a formed in the central reinforcing rib 164 is provided. A forward and reverse rotation of the inner motor 180 that is formed on the motor shaft 181 at the front end;
The outer tooth roller 192 is mounted on the outer surface of the outer bracket 170 and positioned in the installation hole 174a of the central reinforcing rib 174 so as to maintain a gap with the inner tooth roller 182. A forward and reverse rotation of the outer motor 190 built in 191;
It is provided to communicate between the head assembly 70 and the outer bracket 170, the supply and discharge of the three colors of the filament (3) to the head assembly 70 in sequence by the operation of the inner, outer motor 180, 190 Multi-color filament supply apparatus of the 3D printer, characterized in that consisting of a distribution port to guide the. According to claim 1, The screw hole 170a is formed to correspond to the upper and lower portions of the outer bracket 170,
A vertical guide rod 210 having a filament supply hole 210a is formed to communicate between the inside of the screw hole 170a, the installation hole 174a, and the installation groove 174b. Multicolor filament feeder of 3D printer, characterized by guiding Shanghai. The method of claim 1, wherein the distribution port 300
A coupling hole 301 is formed in which a plurality of upper distribution feeders 220 are coupled to supply three colors of the filaments 3 to the upper part, and one of the three filaments 3 is supplied to the lower part. A body 310 having an inverted triangular space 304 having a wide upper portion and a narrower lower portion having a coupling hole 302 to which the lower partial feeding 240 is coupled;
Screw holes 321 and 331 are formed in communication with the coupling holes 301 and 302 at the upper and lower portions of the body 310 to insert the upper distribution feeder 220 and the lower distribution feeder 240 to be screwed together. Upper and lower inlets 320 and 330;
Guide holes for guiding one of the filaments of the three colors of the filament (3) to the lower portion double feeding 240 is formed integrally in communication with the screw hole 321 of the upper inlet 320 in the upper space (304) The multi-color filament supply apparatus of the 3D printer, characterized in that consisting of a plurality of distribution guide protrusions 350 formed with (351). The method of claim 1, wherein the head assembly 70
Square hole 72a is formed in the center area, and the horizontal part 72 having the lower step assembly hole 72b formed in the corner area of the square hole 72a and integrally formed at the same angle on the outer circumferential surface of the horizontal part 72. And, the lower block 74 consisting of a plurality of horizontal projections 73, the recess groove 73a is formed;
The upper step assembly hole 75a is formed at the edge corresponding to the lower step assembly hole 72b of the horizontal portion 72 and is assembled to maintain the vertical space 80a as the space 80, and the upper assembly hole ( An upper block 75 formed with a plurality of assembling holes 75c formed on an outer circumferential surface of the upper assembly hole 75b;
The upper stepped hole 76a is formed to correspond to the upper assembly hole 75b of the upper block 75 and is fastened and fixed by the fastening bolt 77, and the upper stepped assembly hole 76b to correspond to the assembly through hole 75c in the central area. ) Is formed, and the upper block 76 made of a triangle;
Head unit for stack-molding the three-dimensional molded article (1) by sequentially melting the three-color filament (3) is assembled and supplied in the vertical space (80a) between the lower block 74 and the upper block (75) 90) multi-color filament feeder of 3D printer, characterized in that consisting of. The method of claim 4, wherein the head unit 90
The upper outer periphery is coupled to the upper assembly hole (75b) of the upper block 75 and the assembly through hole (75c) of the upper block 76, the tube insertion hole (93a) through which the insertion tube 91 is inserted in the central area is penetrated. A heat dissipation casing 93 formed at a lower portion thereof, and a plurality of heat dissipation plates 93c formed at equal intervals on the outer circumference thereof to block heat from the heater 92 from being transferred upward;
A threaded hole 95a is formed to be detachably fastened to the threaded portion 93b of the lower portion of the heat dissipation casing 93, and a filament supply hole 95b is formed to communicate with the threaded hole 95a. Nozzle block 95 to which a heater 92 for melting) is coupled;
The nozzle 97 is formed at the lower end of the nozzle block 95, the discharge hole (97a) for discharging the filament (3) is formed in communication with the filament supply hole (95b) to discharge the molten filament (3) to the bottom );
A heat dissipation fan (99) for cooling the nozzle block (95) and the nozzle (97) which are detachably fastened to the outside of the heat dissipation plate (93b) of the heat dissipation casing (93) and heated by the heater (92);
An inner bracket 110 fastened and fixed to the upper step assembly hole 75a of the upper block 75 by a fastening bolt 84; It is formed integrally on the outside of the inner bracket 110, the mounting portion 121 is formed with a mounting groove 121a is inserted into the heat dissipation fan 102 on the top, and the air distribution hole in communication with the mounting groove (121a) ( 122a) is formed, the lower end is located in the square hole (72a) formed in the horizontal portion 72 of the lower block 74, the air supply for supplying the wind of the heat radiation fan 102 to the three-dimensional molding (1) region Molded heat dissipation fan 100 consisting of a heat dissipation fan support base 120 made of a duct 122;
Multicolor filament supply apparatus of a 3D printer, characterized in that configured to include.

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