KR20150122504A - Head assembly for 3D printers - Google Patents

Head assembly for 3D printers Download PDF

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Publication number
KR20150122504A
KR20150122504A KR1020140048855A KR20140048855A KR20150122504A KR 20150122504 A KR20150122504 A KR 20150122504A KR 1020140048855 A KR1020140048855 A KR 1020140048855A KR 20140048855 A KR20140048855 A KR 20140048855A KR 20150122504 A KR20150122504 A KR 20150122504A
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KR
South Korea
Prior art keywords
cooling
nozzle
feeding
filament
wind
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KR1020140048855A
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Korean (ko)
Inventor
차전호
Original Assignee
주식회사 티피씨애니웍스
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Priority to KR1020140048855A priority Critical patent/KR20150122504A/en
Publication of KR20150122504A publication Critical patent/KR20150122504A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

The present invention relates to a head assembly for a three-dimensional printer. The head assembly comprises: a feeding unit (20) for supplying a filament, a molding material, by including a feeding body (210), a roller bracket (220) having a feeding roller installed thereto and elastically rotated by a coil spring (250), and a feeding gear (240) for transferring the filament with a driving force of a step motor (241); a melting spraying part (30) for melding the filament to be sprayed by including a nozzle (310) into which the filament supplied from the feeding unit (20) is injected, and a hitting means (320) for melting the filament injected into the nozzle (310); and a cooling unit (40) for cooling a melting solution (51) sprayed from the melting spraying unit (30) by including a cooling chamber (410) having a cooling fan (413) installed therein to produce a cooling wind, and a wind guide (420) for inducing and discharging the cooling wind to a wind outlet (421) at the center thereof. Therefore, the molding speed of the three-dimensional printer is improved by stably and rapidly cooling a filament meting solution (51) sprayed on a bed (10).

Description

[0001] Head assembly for 3D printers [0002]

The present invention relates to a head assembly for a 3D printer, and more particularly, to a head assembly for a 3D printer, in which a plastic filament as a molding material is melted using a heating means and is sprayed onto a bed using a nozzle, To a head assembly for a 3D printer which can improve the molding speed of a 3D printer.

A 3D printer refers to a machine that prints (shapes) a three-dimensional shape of a real object based on a three-dimensional drawing (data) created by a computer design program. Its use is becoming more and more popular due to its innovative technical features that can mold complex geometric models or pupils into 3D moldings, which are difficult to produce with conventional manufacturing methods, with only three-dimensional drawings (data) of the finished product.

In the 3D printer molding method of a 3D printer, there are a method of cutting a molding material and a molding method, and a method of forming a molding material from the bottom to the top of the object by stacking layers with a very thin film (hereinafter referred to as "rapid molding method" ).

In the cutting method, a large amount of molding material is cut into a round blade to form a 3D molded article (computer numerically controlled engraving method). The curved portion is advantageous in that it is smooth compared with the rapid prototyping method. However, ) Is difficult to make because the blade can not enter the inside, only one 3D molding is produced from one molding material, and only one monochrome 3D molding can be produced depending on the color of the base material.

In the rapid prototyping method, the molding material is stacked one by one with a very thin film to form from the bottom of the object to the top. In such a rapid prototyping 3D printer, materials having various characteristics such as powder (powder) Is used.

A rapid prototyping 3D printer using powder is to fill the container with finely ground powder of nylon or lime and then spray the adhesive onto the paper as the print head passes over it. When the powder is clumped and hardened, it becomes a layer. The layer is buried in the flour and the surface is covered with a thin layer of flour. Again, the printhead sprays glue on top of it to create a second layer. Depending on the design, this operation can be repeated a number of times to build up a layer of tens of layers to complete the 3D molding. When printing is finished, take out the finished product buried in the powder, immerse it in the hardener, and dry it for 5 ~ 1 minute.

The manner of printing the liquid material is similar to that using the powder. The liquid material that enters a 3D printer is plastic that cures to a solid when it receives light (photocurable plastic). On top of the container containing the liquid material, the printer head draws the desired shape with light (ultraviolet ray) according to the design. When light is received, the surface of the liquid is cured to form a layer. The first layer is lightly immersed in the liquid, and then the printhead passes over it again to create a second layer. Because it can break in the process of immersing in liquid, it gives support to each layer. At the end, the finished product can be removed from the liquid.

A 3D printer using a yarn-shaped material is made by feeding a filament made of thermoplastic plastic through a feed reel and a feed roll and feeding the filament to a nozzle mounted in a three-dimensional feeding mechanism which is positioned in three directions relative to the bed When instantaneous strong heat is applied and melted and a picture is drawn on a bed while being sprayed, it is cured at room temperature to become a layer. By finally layering these layers, a 3D molding is finally completed.

In the case of the above-mentioned filament melt laminate 3D printer, since the shape of the 3D molding is complicated and the color of the 3D molding can be formed in a variety of colors as compared with other 3D printers, the molding cost of the 3D molding is low, The operation environment of the printer is clean, so that it is possible to create a comfortable working environment and it is the most popular in recent years as a 3D printer.

Japanese Patent Laid-Open Publication No. 1-1346704

Recently, filament melt lamination type 3D printers, which are most popular in the recent years, apply filament material from a nozzle while instantaneously applying strong heat (700-800 ° C) to the nozzle while spraying it while spraying it. When the resin is cured at room temperature, In the past, the filament melt injected onto the bed was naturally cooled and cured at room temperature, so that the curing time of the melt was delayed and the molding speed of the 3D printer was lowered .

In addition, during the natural cooling and curing of the layer formed on the bed, the nozzle has to be kept in a standby state without spraying the filament melt, thereby reducing energy efficiency due to unnecessary operation of the heating means for filament melting.

The head assembly for a 3D printer of the present invention is a head assembly for a 3D printer. The head assembly includes a feeding body 210 having a vertical wall 211 formed at an upper portion thereof and a clamping portion 212 formed at an upper portion thereof, A roller bracket 220 rotatably installed on the vertical wall 211 and provided with a feeding roller 223 at a lower portion thereof, a feeding guide 230 installed on the clamping portion 212 to guide the filament, A feed gear 240 for feeding a filament that is installed in proximity to the feeding roller 223 and outside of the feeding roller 223 by the driving force of the stepping motor 241, And a coil spring (250) for elastically rotating the roller bracket (220) to feed filaments;

A nozzle 310 coupled to an upper end of the clamping part 212 to feed a filament fed from the feeding part 20 and a heating device installed at one side of the nozzle 310 to melt the filament injected into the nozzle 310, (30) for melting and injecting filaments supplied from the feeding unit (20);

A cooling chamber 410 installed at a lower portion of the feeding part 20 so as to penetrate the nozzle hole 310 formed at the center of the nozzle hole 310 and having a cooling fan 413 installed on the outer side thereof to produce cooling wind, And a wind guide 420 for guiding and discharging the cooling air produced by the cooling fan 413 to the central wind discharge port 421. The cooling guide 413 is provided with a cooling part for cooling the melt 51 injected from the molten injection part 30, The molten liquid 51 injected onto the bed 10 from the nozzle 310 can be uniformly and rapidly cooled to improve the molding speed of the 3D printer.

In the head assembly for a 3D printer of the present invention, the plastic filaments as the molding material are melted using the heating means and sprayed onto the bed using the nozzles, and the injected melt is uniformly and rapidly cooled by the cooling wind, Not only the molding speed of the printer can be improved but also the unnecessary waiting time of the heating means for melting the filament is shortened to improve the energy efficiency and thereby the cost for operating the 3D printer is reduced and the economical efficiency is improved.

1 is a perspective view of a head assembly for a 3D printer according to an embodiment of the present invention;
2 is an exploded perspective view of a head assembly for a 3D printer according to an embodiment of the present invention.
3 is a front view according to an embodiment of the head assembly for 3D printer of the present invention
4 is a perspective view of a molten injection part according to an embodiment of the head assembly for a 3D printer of the present invention
5 is a front sectional view according to the embodiment of the head assembly for 3D printer of the present invention
6 is a side sectional view according to the embodiment of the head assembly for a 3D printer of the present invention
7 is a perspective view of a 3D printer equipped with a head assembly for a 3D printer according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure and operation of a head assembly for a 3D printer according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a head assembly for a 3D printer, comprising: a feeding section (20) for feeding a filament (50) as a molding material; A molten injection part (30) for melting and injecting the filament fed from the feeding part (20); And a cooling unit 40 for cooling the molten liquid 51 sprayed to the bed 10 from the molten injection unit 30.

The feeding unit 20 includes a feeding body 210 having a vertical wall 211 formed at an upper portion thereof and a clamping portion 212 formed at an upper portion thereof and a feeding body 210 installed at the vertical wall 211 so as to be rotatable with a hinge pin 224. [ A feeding guide 230 installed on the clamping part 212 to guide the filament and a feeding part 230 disposed at a lower part of the roller bracket 220, A feeding gear 240 installed near the roller 223 for feeding the filament passing through the guide hole 221 of the roller bracket 220 by the driving force of the stepping motor 241, And a coil spring 250 installed between the guides 230 to rotate the roller bracket 220 elastically.

A vertical wall 211 is formed at the upper center of the feeding body 210 and a stepping motor 241 for driving the feeding gear 240 for feeding the filament is bolted to the rear surface of the vertical wall 211.

The clamping part 212 in front of the feeding body 210 includes a fixing part 212a which is coupled to the feeding body 210 with a bolt nut and a fixing part 212b which is integrated with the fixing part, The pressing bolt is inserted into the through hole 212d formed at the end of the pressing piece 212c integrally extended from one side of the fixing part so as to be formed in the fixing part, Clamping is done on still objects.

The roller bracket 220 is rotatably mounted on the vertical wall 211 by a hinge pin 224. A guide hole 221 for guiding the filament is formed at the center in a longitudinal direction, 221 and a feeding roller 223 for circumscribing the filament and guiding the filament.

The guide hose 222 may be inserted into the guide hole 221 in consideration of the shape of the fed filament and the elasticity of the material, The guide hose 222 may be made of PTFE (Polytetrafluoroethylene) having excellent heat resistance and abrasion resistance, but it is not limited thereto. I will reveal it in advance.

The feeding guide 230 coupled with the bolt nut on the clamping part 212 forms a vertical hole 230a in the longitudinal direction to guide the filament passing through the roller bracket 220 and a feeding gear 240 Arc-shaped grooves 230b are formed so as not to interfere with each other.

The feed gear 240 for feeding the filament by the driving force of the step motor 241 is installed in the lower part of the roller bracket 220 in the vicinity of the feeding roller 223. The outer peripheral surface of the filament, Without slip.

The coil spring 250 installed between the roller bracket 220 and the feeding guide 230 causes the roller bracket 220 to elastically rotate and the compression pressure of the coil spring 250 is applied to the vertical wall 211 by the hinge pin A pressing force is applied so that the feeding roller 223 provided at the lower part of the other side of the roller bracket 220 is closely contacted to the feeding gear 240 side by pushing up one side end of the roller bracket 220 which is rotatably attached to the feeding roller 224.

The molten injection part 30 for melting and injecting filaments supplied from the feeding part 20 includes a nozzle 310 to which a filament fed from the feeding part 20 is inserted and an upper end part is coupled to the clamping part 212, And a heating unit 320 installed at one side of the nozzle 310 to melt the filament injected into the nozzle 310.

The upper end of the nozzle 310 into which the filament fed from the feeding part 20 is inserted is fixed to the clamping part 212 and the female threaded part 311a is formed on the lower surface thereof. A center hole 312b that is threadedly engaged with the female threaded portion 311a of the nozzle mount 311 and connected to the center hole 311b of the nozzle mount 311, And a nozzle body 312 in which a plurality of annular cooling slits 312c are formed on the outer circumferential surface.

A guide hose 330 may be inserted between the nozzle mount 311 and the coupling portion of the nozzle body 312 with a PTFE material having excellent heat resistance and abrasion resistance. The upper end of the guide hose 330 is fixed to the center of the nozzle mount 311 And the lower end of the guide hose 330 is inserted into the center hole 312b of the nozzle body 312. In this case,

A conical nozzle cover 340 made of PEEK (polyetheretherketone), which is a thermoplastic resin having excellent heat resistance, can be screwed to the lower end of the nozzle body 312.

When the nozzle mount 311 is fixed by the clamping part 212 of the feeding part 20 by forming the coupling groove 311a at the upper end of the nozzle mount 311, 230 are inserted into the coupling groove portion.

The heating means 320 may be constructed such that a nichrome wire is inserted into an installation hole 321b formed at a side of a heater block 321 having a clamping portion 321a formed at a front side thereof and the inside of the installation hole 321b And a temperature sensor 323 is installed on one side of the heater block 321. [

The cooling unit 40 for cooling the filament melt 51 injected into the bed 10 in the melt injection unit 30 is connected to the feeding unit 412 through the tub 412 formed at the center of the nozzle 310, A cooling chamber 410 coupled to a lower portion of the cooling chamber 410 and having a cooling fan 413 installed on an outer side thereof to produce cooling air; And a wind guide 420 for guiding and discharging the cooling wind to the central wind discharge port 421.

The cooling chamber 410 is provided with a cooling fan 413 on both left and right outer walls and an inclined inner wall 411 for guiding the cooling wind discharged from the cooling fan 413 is formed symmetrically on both sides, (412) into which a lower end portion of the tube (310) is inserted.

The wind guide 420 is formed integrally with the cooling chamber 410 by integrally forming an engaging protrusion 420a fitted in the coupling hole 410b formed in the coupling piece 410a protruding out of the cooling chamber 410, 410).

A guide wing 422 for guiding the cooling air produced inside the cooling chamber 410 by the cooling fan 413 to the wind discharge port 421 of the wind guide 420 is formed on the upper surface of the wind guide 420 And the guide wings 422 are formed to have a high cooling fan 413 and a low wind outlet 421 and to form a plurality of guide windings 422 at regular intervals in the longitudinal direction of the wind guide 420.

The operation of the head assembly for a 3D printer to which the present invention is applied will now be described with reference to the accompanying drawings.

The head assembly for a 3D printer according to the present invention is mounted on a three-dimensional conveying mechanism which is positioned relative to the bed 10 of the 3D printer in X, Y, and Z directions as shown in FIG. 7 to form a thermoplastic plastic filament A layer of 3D data is formed by spraying onto the bed 10 using the molten injection part 30 while being supplied through the supply reel and melting by using the strong heat of the heating unit 320, It is possible to improve the forming speed of the 3D printer by repeating a series of processes of quickly forming another layer on the cured layer by quickly cooling and hardening the layer of one layer formed on the bed 10 by using the above-

As shown in FIGS. 1 to 6, the head assembly for a 3D printer of the present invention includes filaments supplied through a feeding part 20, and a filament is supplied through a roller bracket 220 provided with a guide hose 222 on the upper part thereof. The filaments passing through the guide holes 221 of the roller bracket 220 in the longitudinal direction are brought into contact with the feeding roller 223 provided at the lower side of the one side of the roller bracket 220.

A feed gear 240 driven by a step motor 241 is installed at a side of the feeding roller 223 and the roller bracket 220 is pushed upward by the compression pressure of the coil spring 250 The pressing force is applied so that the feeding roller 223 provided on the lower side of the other end of the roller bracket 220 is brought into close contact with the feeding gear 240. The filament that is in contact with the feeding roller 223 is driven by the feeding roller 223 and the feeding gear 240 and is fed downward without slipping by the feeding gear 240.

In order to remove the filament inserted into the guide hole 221 of the roller bracket 220 for replacement of the filament, the upper side of the one end of the roller bracket 220, to which the compressive pressure of the coil spring 250 is applied, The roller bracket 220 rotatably pivoted by the hinge pin 224 is pivoted so that the gap between the feeding roller 223 provided on the roller bracket 220 and the feeding gear 240 for feeding the filament is expanded, The filament inserted into the guide hole 221 of the bracket 220 can be easily pulled out to the upper part of the guide hole 221 and the filament can be easily replaced.

The filaments to be downsized are melted by the heating means 320 in the process of being fed into the center hole of the nozzle 310 and then the melted liquid 51 is injected into the nozzles 310 by the feeding pressure of the filament by the feeding unit 20 310).

The nozzle 310 is composed of a nozzle mount 311 fixed to the feeding part 20 and a nozzle body 312 screwed to the nozzle mount 311. The nozzle body 312 is fixed to the feeding part 20, The height of the nozzle body 312 can be adjusted and the height of the nozzle body 312 can be appropriately adjusted according to the melting point, the material, and the thickness of the filament when the filament melt 51 is injected.

A guide hose 330 made of a PTFE material having excellent heat resistance and abrasion resistance is inserted between the nozzle mount 311 and the joint part of the nozzle body 312 and is inserted into the joint part between the nozzle mount 311 and the nozzle body 312 The filaments are smoothly passed through the nozzle 310 while the filaments pass through the nozzle 310 and the inner circumferential surface of the center holes 311b and 312b of the nozzle body 312 are suppressed, Thereby ensuring smooth supply of the filament.

The guide hose 330 has a plurality of cooling slits 312c formed on the outer circumferential surface of the nozzle body 312 and the heat of the nozzle body 312 heated by the heating means 320 is transferred to the nozzle mount 311 The filaments supplied from the nozzle mount 311 to the nozzle body 312 are prevented from being unstably discharged from the nozzle body 312 while being melted in the supply process.

When the filament melt 51 is injected onto the bed 10 in the melt injection part 30 as described above, the filament 20 is injected onto the bed 10 by using the cooling part 40 positioned below the molten injection part 30, The melt 51 is rapidly cooled and hardened.

That is, the cooling unit 40 is provided with cooling fans 413 on both sides of the cooling chamber 410 so that the cooling wind generated from the cooling fan 413 is guided to the center of the wind guide 420 coupled to the lower portion of the cooling chamber 410 And is discharged through the wind discharge port 421 to rapidly cool and harden the formed layer on the bed 10.

The cooling wind produced by the cooling fan 413 is guided by the inclined inner wall 411 formed on both sides of the cooling chamber 410 and the plurality of guide wings 422 formed on the upper surface of the wind guide 420, And is guided to the wind discharge port 421 of the guide 420.

The lower end of the nozzle 310 is positioned at the center of the wind discharging port 421. A nozzle cover 340 formed in a conical shape using a PEEK material which is a thermoplastic resin having excellent heat resistance is screwed to a cooling part 40 can prevent the nozzle 310 from being cooled while the cooling wind directly contacts the nozzle 310 to induce heat efficiency of the heating means 320 when the cooling wind is induced and discharged to the wind discharge port 421 In addition, the cooling wind is formed into a funnel shape along the shape of the inclined circumferential wall of the conical nozzle cover 340 so that the molten liquid injected on the bed 10 is cooled and hardened annularly around the nozzle opening of the nozzle 310, The melt 51 sprayed onto the bed 10 can be uniformly and rapidly cooled without spilling out the melt 51 injected from the nozzle 310.

The nozzle cover 340 screwed to the lower end of the nozzle 310 can be adjusted in height according to the degree of unlocking and tightening so that it collides with the inclined peripheral wall of the nozzle cover 340 through the height adjustment of the nozzle cover 340, And the diameter of the annular cooling wind applied to the bed 10 can be adjusted. Therefore, the height of the nozzle cover 340 is appropriately adjusted according to the melting point, the material, and the thickness of the filament, So that the melt 51 can be cooled and cured.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

1: 3D printer 2: Head assembly
20: feeding part 210: feeding body
211: vertical wall 212: clamping part
220: roller bracket 221: guide ball
222: Guide hose 223: Feeding roller
230: feeding guide 240: feeding gear
241: step motor 250: coil spring
30: melt injection part 310: nozzle
311: Nozzle mount 311a: Female thread part
311b: center hole 312: nozzle body
312a: male screw portion 312b: center hole
312c: cooling slit 320: heating means
321: heater block 321b: installation hole
322: Heating wire 323: Temperature sensor
330: guide hose 340: nozzle cover
40: Cooling part 410: Cooling chamber
411: sloping inner wall 412:
413: Cooling fan 420: Wind guide
421: Wind outlet 422: Guide wing
50: filament 51: melt

Claims (6)

A feeding body 210 having a vertical wall 211 formed on an upper portion thereof and a clamping portion 212 formed on a front side thereof and a roller 210 rotatably installed on the vertical wall 211 and provided with a feeding roller 223 A feeding guide 230 provided on the clamping part 212 and guiding the filament and a filament which is installed in proximity to the feeding roller 223 and is in contact with the feeding roller 223, And a coil spring 250 installed between the roller bracket 220 and the feeding guide 230 to rotate the roller bracket 220 elastically to feed the filament, A feeding section 20 for feeding the wafer W;
A nozzle 310 coupled to an upper end of the clamping part 212 to feed a filament fed from the feeding part 20 and a heating device installed at one side of the nozzle 310 to melt the filament injected into the nozzle 310, (30) for melting and injecting filaments supplied from the feeding unit (20);
A cooling chamber 410 installed at a lower portion of the feeding part 20 so as to penetrate the nozzle hole 310 formed at the center of the nozzle hole 310 and having a cooling fan 413 installed on the outer side thereof to produce cooling wind, And a wind guide 420 for guiding and discharging the cooling air produced by the cooling fan 413 to the central wind discharge port 421. The cooling guide 413 is provided with a cooling part for cooling the melt 51 injected from the molten injection part 30, (40). ≪ / RTI >
The method according to claim 1,
The nozzle 310 has a nozzle mount 311 formed with a center hole 311b through which the upper end is inserted into the clamping part 212 and which has a female screw part 311a formed on the bottom surface thereof, Wow,
A center hole 312b which is screwed to the female threaded portion 311a of the nozzle mount 311 and connected to the center hole 311b of the nozzle mount 311 is formed and an annular cooling slit 312c is formed on the outer periphery, And a nozzle body (312) formed with a plurality of nozzle bodies (312).
3. The method of claim 2,
A guide hose 330 having an upper end inserted into the center hole 311b of the nozzle mount 311 and a lower end inserted into the center hole 312b of the nozzle body 312 to guide the filament,
And a nozzle cover (340) screwed to the lower end of the nozzle body (312) to adjust the direction and angle of the cooling wind.
The method according to claim 1,
The heating means 320 is provided with an electric heating line 322 inserted into a mounting hole 321b formed at a side of the heater block 321 having a clamping portion 321a formed in front thereof and insulates the inside of the mounting hole 321b with a ceramic material Filling,
And a temperature sensor (323) is installed on a side of the heater block (321).
The method according to claim 1,
The cooling unit 40 is provided with cooling fans 413 symmetrically provided on both left and right outer walls of the cooling chamber 410 and an inclined inner wall 411 for guiding the cooling wind discharged from the cooling fan 413 to both left and right sides Symmetrically,
Wherein a guide wing (422) for guiding the wind generated from the cooling fan (413) to the central wind outlet (421) is formed on the upper surface of the wind guide (420).
6. The method of claim 5,
The guide wing 422 is formed such that the cooling fan 413 is high and the wind outlet 421 is low and a plurality of windings 420 are formed in the longitudinal direction of the wind guide 420 at regular intervals Head assembly for 3D printers.
KR1020140048855A 2014-04-23 2014-04-23 Head assembly for 3D printers KR20150122504A (en)

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CN105599309A (en) * 2016-04-07 2016-05-25 哈尔滨鼎智瑞光科技有限公司 Cooling device of 3D printer
CN106363904A (en) * 2016-10-10 2017-02-01 南京航空航天大学 Heat dissipation device of FDM (fused deposition modeling) three-dimensional printing machine with kossel structure
KR20180000316A (en) * 2016-06-22 2018-01-02 이동엽 3d printer
CN107825699A (en) * 2017-11-27 2018-03-23 西北工业大学（张家港）智能装备技术产业化研究院有限公司 3D printer printing head
CN107877864A (en) * 2017-12-15 2018-04-06 北京科技大学 A kind of 3D printer transmission of materials device
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KR20200036080A (en) * 2018-09-18 2020-04-07 (주)지이엠플랫폼 Nozzle assembly for 3d printer
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CN116373293A (en) * 2023-06-06 2023-07-04 成都飞机工业（集团）有限责任公司 Wire feeding device and method for FDM numerical control 3D printing equipment
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CN105599309A (en) * 2016-04-07 2016-05-25 哈尔滨鼎智瑞光科技有限公司 Cooling device of 3D printer
KR20180000316A (en) * 2016-06-22 2018-01-02 이동엽 3d printer
CN106363904A (en) * 2016-10-10 2017-02-01 南京航空航天大学 Heat dissipation device of FDM (fused deposition modeling) three-dimensional printing machine with kossel structure
KR20180084232A (en) * 2017-01-16 2018-07-25 백흥기 Three-dimensional printer with easy install and remove nozzle module
KR101872718B1 (en) * 2017-02-20 2018-06-29 백철민 Material supply nozzle device
KR101863874B1 (en) * 2017-03-14 2018-06-01 울산과학기술원 Medical silicon 3D printer
KR101955923B1 (en) 2017-11-13 2019-03-08 김남희 3d printer capable of uniform output regardless of ambient temperature and humidity
CN107825699A (en) * 2017-11-27 2018-03-23 西北工业大学（张家港）智能装备技术产业化研究院有限公司 3D printer printing head
CN107877864B (en) * 2017-12-15 2024-03-12 北京科技大学 3D printer material transmission device
CN107877864A (en) * 2017-12-15 2018-04-06 北京科技大学 A kind of 3D printer transmission of materials device
KR20190077711A (en) 2017-12-26 2019-07-04 재단법인경북테크노파크 Cnt mixed filament discharge head appararus for 3d printer
KR20190100481A (en) * 2018-02-05 2019-08-29 주식회사 네오시즈 Level measuring system of the 3D printer and 3D printer using it
KR102043017B1 (en) 2018-05-01 2019-11-11 김주용 Three dimensional printer
KR20200036080A (en) * 2018-09-18 2020-04-07 (주)지이엠플랫폼 Nozzle assembly for 3d printer
KR20200092445A (en) 2019-01-02 2020-08-04 김주용 Three dimensional printer
KR102045283B1 (en) 2019-05-08 2019-11-15 김주용 Center cartridge module for three dimensional printer
KR102186858B1 (en) 2019-09-25 2020-12-04 김주용 3d printer and center cartridge module for three dimensional printer
KR20210036516A (en) * 2019-09-26 2021-04-05 (주)엘에스비 3d food printer with tube wringer
CN116373293A (en) * 2023-06-06 2023-07-04 成都飞机工业（集团）有限责任公司 Wire feeding device and method for FDM numerical control 3D printing equipment
CN116373293B (en) * 2023-06-06 2023-09-29 成都飞机工业（集团）有限责任公司 Wire feeding device and method for FDM numerical control 3D printing equipment
CN117600502A (en) * 2023-08-23 2024-02-27 郑州轻工业大学 Thermal and forging composite device for metal 3D printer and control method
CN117600502B (en) * 2023-08-23 2024-06-11 郑州轻工业大学 Thermal and forging composite device for metal 3D printer and control method

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