KR101720672B1 - Apparatus spouting 3d printing material - Google Patents

Apparatus spouting 3d printing material Download PDF

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Publication number
KR101720672B1
KR101720672B1 KR1020150102501A KR20150102501A KR101720672B1 KR 101720672 B1 KR101720672 B1 KR 101720672B1 KR 1020150102501 A KR1020150102501 A KR 1020150102501A KR 20150102501 A KR20150102501 A KR 20150102501A KR 101720672 B1 KR101720672 B1 KR 101720672B1
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KR
South Korea
Prior art keywords
filament
main block
nozzle
extruder main
hot plate
Prior art date
Application number
KR1020150102501A
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Korean (ko)
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KR20170010624A (en
Inventor
조성진
Original Assignee
주식회사 이조
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Priority to KR1020150102501A priority Critical patent/KR101720672B1/en
Publication of KR20170010624A publication Critical patent/KR20170010624A/en
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Publication of KR101720672B1 publication Critical patent/KR101720672B1/en

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    • B29C67/0085—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling

Abstract

Since the present invention includes the nozzle having the discharge portion for injecting the filament F and the guide pipe for guiding the filament F to the discharge portion, the discharge portion and the guide pipe are not separated from each other, And the nozzle can be fixed to the hot plate by the pressurizing means, so that the 3D printer extruder including the integral nozzle capable of facilitating the management and maintenance of the extruder, .

Description

[0001] APPARATUS SPOINTING 3D PRINTING MATERIAL [0002]

The present invention relates to a 3D printer extruder including an integral nozzle, and more specifically, a nozzle for injecting molten filaments and a connection pipe for separating the main block of the extruder from the hot plate are integrally formed, And to a 3D printer extruder including an integral type nozzle that makes it convenient.

Conventional 3D printers have been developed for the purpose of prototyping products before they are commercialized in the enterprise. However, they have been developed in the early stage, which was confined to plastic materials, expanded to nylon and metal materials, and commercialized in various fields as well as industrial prototypes Respectively.

In general, it is divided into a 3D printer method (additive type or rapid prototyping method) and a cutting type machining method (computer numerically controlled engraving method) in which a large lump is cut by stacking up a layer by a method of forming a three-dimensional form. The object can be determined in various ways.

The FDM (Fused Deposition Modeling) method is typical in the laminated type, and is called a FFF (Fused Filament Fragment). A plastic wire called a filament is used as a material.

The material is similar to the glue gun used in home applications in the form of melting the melt while passing through a heated extruder and laminating the material flowing through the nozzle onto the output plate to shape the required shape.

 The key to material extrusion processing technology is the extruder, which melts and extrudes the material. It basically includes a motor to move the material and apply pressure to the nozzle (Hot End).

The extruder is divided into a direct extrusion type and a bowden type according to the position of the extrusion motor. In the direct extrusion type, since the extrusion motor is located directly above the nozzle, the nozzle and the filament Since the distance is short, stable raw material supply is possible, and the output quality is good. However, there is a disadvantage that the extrusion motor is like a nozzle and is heavy and disadvantageous to high speed output. In Bowden type, the compression device is located outside the printer. In order to compensate unstable supply, Teflon tube connects the head part and the crimping part. The driving part of the nozzle is light and easy to use for high speed output. The motor is subjected to a load as much as possible, and the speed of extrusion response is slowed, and the output quality may deteriorate.

The conventional direct extrusion method includes a body 120, a guide tube 130 for guiding the filament F into the body 120, and a guide pipe 130 for guiding the filament F into the body 120, as described in Korean Patent Publication No. 10-1441030 A gear drive 140 for feeding the filament F passing through the inside of the body 120 and forcing the filament F to be interlocked with the power generator 110 and an elastic restoring force to the filament F and the gear drive 140, A heater cartridge 150 which melts the filament F passing through the body 120 and an elastic pressing means 200 for increasing the frictional force between the heater cartridge F and the gear drive 140, And a nozzle 160 for injecting the molten filament F. A connection pipe 170 is provided between the heater cartridge 150 and the body 120. [

As described above, the nozzle 160 and the connection pipe 170 are divided around the heater cartridge 150, and a thread is formed on the outer side. The nozzle 160 and the connection pipe 170 are connected to the heater cartridge 150 So that they can be screwed together. However, in the conventional method, it is troublesome to separate the nozzle 160 or the connection tube 170 from the heater cartridge 150 when replacing the nozzle 160 or the connection tube 170, respectively. There is a problem that the cost increases.

Korea Patent Office Registration No. 10-1502342 Korean Patent Registration No. 10-1441030

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide an apparatus and a method for manufacturing a filament, which comprises a guide pipe integrally formed above a nozzle for injecting molten filaments, And an integral nozzle for pressing the guide pipe penetrating through the hot plate to prevent the nozzle from being detached from the hot plate by fastening the pressing means to the through hole formed at one side of the hot plate, The object of the present invention is to provide a 3D printer extruder.

As means for solving the above-mentioned problems, in an embodiment of the present invention, an extruder main block; A step motor disposed on a rear surface of the extruder main block and capable of driving a conveyance part inserted in the extrusion crab main block; A feeder positioned inside the extruder main block and capable of discharging the filament F introduced from the upper side to the nozzle; A hot plate positioned at a lower portion of the extruder main block and capable of vibrating the inflowing filament; And a nozzle for vertically penetrating the hot plate and for injecting a filament that has passed through the transfer part, wherein the nozzle comprises: a guide tube for guiding the filament F introduced into the extruder main block downward; And a discharge unit located at a lower portion of the guide tube for discharging the fused filaments.

In a preferred embodiment of the present invention, the transfer unit comprises: an extrusion gear driven by a stepping motor; And a guide bearing rotatably engaged with the extrusion gear and guiding the filament F inserted inward. The guide bearing is movable left and right by the filament changing switch, so that the filament can be taken out.

In a preferred embodiment of the present invention, the extruder main block has a cover on its front side, the upper side is fixed to the extruder main block and the lower side is fixed to a hot plate so that a space can be formed between the extruder main block and the hot plate .

As a preferred embodiment of the present invention, the front surface of the extruder main block further includes a cooling fan to prevent the inflow of filaments F from being melted.

As a preferred embodiment of the present invention, a side surface of the hot plate may further include a pressing means to press the guide pipe passed through the hot plate by using the pressing means.

According to a preferred embodiment of the present invention, a stopping jaw is formed between the guide tube and the discharge unit included in the nozzle, so that the hot plate can be prevented from entering the lower portion of the discharge unit by the latching jaw .

According to the present invention, the following effects can be achieved by this configuration.

In the 3D printer extruder including the integral nozzle according to the present invention, the nozzle includes a discharge portion for discharging the filament and a circular guide pipe projecting outwardly from the discharge portion, wherein the discharge portion and the guide pipe So that the effect of facilitating the connection and disassembly with the hot plate can be achieved.

1 is a cross-sectional view schematically showing a conventional extrusion apparatus,
2 is a perspective view schematically showing a 3D printer extruder including the integral nozzle of the present invention,
3 is an exploded perspective view schematically showing a 3D printer extruder including the integral nozzle of the present invention,
4 is a side view schematically showing a 3D printer extruder including the integral nozzle of the present invention,
5 is a cross-sectional view schematically showing the portion "AA" shown in Fig.

Hereinafter, a 3D printer extruder including the integral nozzle according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that like elements in the drawings are represented by the same reference numerals as possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a perspective view schematically showing a 3D printer extruder including the integral nozzle of the present invention, FIG. 3 is an exploded perspective view schematically showing a 3D printer extruder including the integral nozzle of the present invention, FIG. Fig. 5 is a cross-sectional view schematically showing the portion "AA" shown in Fig. 4. Fig. 5 is a side view schematically showing a 3D printer extruder including an integral nozzle of Fig.

The present invention relates to an extruder main block 10 having an extruder main block 10 and a feeder 30 inserted in the extruder main block 10 at the rear of the extruder main block 10, A transfer unit 30 located inside the extruder main block 10 and capable of discharging the filament F introduced from the upper side to the nozzle side; A filament exchange switch 40 disposed at the front of the extruder main block 10 to allow the filament F to be taken out of the extruder main block 10 and a hot plate 50 A nozzle 60 vertically penetrating the hot plate 50 and injecting filaments that have passed through the feed unit 30 and a nozzle 60 extending vertically from the extruder main block 10 to the hot plate 50 A front cover 70, And a cooling fan (80) located on the front surface of the cover (70) and preventing a temperature rise of the extruder main block (10).

The extruder main block 10 is formed to be able to move in the X, Y, and Z axes to eject the output, and has a through hole (not shown) through which the filament can be introduced into the upper surface, And a space portion 11 for interpolating a transfer portion 30 driven and connected to a rotation shaft of a step motor 20 to be described later.

The step motor 20 is located on the back surface of the extruder main block 10 and generates rotational power by a power source applied from the outside. A rotating shaft is protruded from the front surface of the stem motor 20 and a transferring part 30 is fixed to one side of the rotating shaft so that the transferring part 30 is rotated to transfer the filament F flowing into the transferring part 30 toward the nozzle So that it can be moved.

The feeder 30 is located inside the space 11 and includes a pushing gear 31 fixed to the rotating shaft of the stepping motor 20 and a guide bearing (32).

The extrusion gear 31 is formed with teeth at the outer side to impart a frictional force to the filament F flowing between the extrusion gear 31 and the guide bearing 32. The guide bearing 32 has a groove The filament F is brought into close contact with the side of the extruding gear 31 so that the filament F can be held by the extruding gear 31 and the extruding gear 31 pushes the filament F toward the nozzle.

When the filament F is caught by the extrusion gear 31 using the guide bearing 32, the guide bearing 32 is strong enough to push the filament F toward the extrusion gear 31 with a stronger force The filament F can be prevented from slipping when the filament F is pushed toward the nozzle 60 and therefore the filament F can be prevented from being broken and the filament F can be pushed toward the nozzle 60 with a constant density Therefore, the quality of the output is also improved. Further, since the guide bearing 32 is not worn by the filament F, it can be used semi-permanently.

The guide bearing 32 is fixed to a filament replacement switch 40 to be described later and is moved in the left and right direction by the filament replacement switch 40 so as to be inserted between the extrusion gear 31 and the guide bearing 32 So that the filaments F can be taken out.

The filament replacement switch 40 is formed in a shape of a letter "A", and a straight portion thereof is located on the front surface of the conveying portion 30, and a bent portion thereof protrudes to the outside of the extruder main block 10, The guide bearings 32 fixed to the filament change switch are moved left and right to form an interval from the extruding gear 31 by pushing the bent portions inside the main block of the extruder so that the filaments F can be easily taken out .

The hot plate 50 is formed in a rectangular shape and is positioned at a lower portion of the extruder main block 10. The hot plate 50 has a first through hole 51 penetrating the upper surface of the upper plate 50, And a second through hole (52) formed on the side surface so as to intersect with each other.

A nozzle 60 to be described later is inserted into the first through hole 51 so that the filament F introduced by using the feeding part 30 can be inserted into the nozzle 60 to be melted, The second through hole 52 is provided with a pressing means (not shown) so that it can be pressed and fixed to the nozzle 60 through the first through hole 51.

The nozzle 60 penetrates the hot plate 50 to allow the filament F introduced between the extrusion gear 31 and the guide bearing 32 to be melted at a high temperature of 200 ° C or higher, So that the output can be ejected according to the predetermined drawing.

The nozzle 60 includes a guide tube 61 formed in a circular tube shape and a guide tube 61 disposed at a lower portion of the guide tube 61. The guide tube 61 has the same shape as a funnel and has a tapered inner side And a hook 62 is formed between the guide tube 61 and the outlet 63 so that the hot plate 50 is engaged with the hook 62 so that the hot plate 50 can be prevented from being released to the lower side of the discharge portion 63. The guide tube 61 is elongated in a vertical direction to a lower side of the transfer unit 30 to guide the filament F toward the discharge unit 63.

The guide tube 61 is vertically penetrated to the inside of the hot plate 50 so that it can be pressed and fixed by a pressing means (not shown) inserted in the second through hole 52. This is because, when the pressing means (not shown) is removed, the nozzle 60 can be separated from the hot plate 50, so that the nozzle 60 can be easily replaced.

The front cover 70 is fixed to the extruder main block 10 at its upper side and fixed to the hot plate 50 at its lower side so that the front cover 70 can be attached to the front surface of the extruder main block 10, 50 are spaced apart from the extruder main block 10 by a predetermined distance to prevent heat from being transferred to the extruder main block 10 so as to prevent the filament F from being melted before being introduced into the nozzle 60.

The front cover 70 includes a fan seating portion 71 for allowing a cooling fan 80 to be seated inside and a second portion of the hot plate 50 is disposed below the front cover 70. [ And a groove (72) for allowing the through hole (52) to be exposed to the outside. Therefore, when the hot plate 50 is fixed to the front cover 70, the pressing means inserted into the second through hole 52 opened through the groove 72 is removed, So that the vertically penetrating nozzle 60 can be released.

The cooling fan 80 is formed in the front cover 70 to provide a cooling effect to the extruder main block 10. Since the cooling fan 80 is not a core technology of the present invention, It will not be described.

While the applicant has described various embodiments of the present invention, it is to be understood that such embodiments are merely one embodiment of the technical idea of the present invention, and that any changes or modifications as far as implementing the technical idea of the present invention are within the scope of the present invention Should be interpreted as belonging to.

10: extruder main block
20: Step motor
30:
40: filament replacement switch
50: Hot plate
60: Nozzle
70: Front cover
80: Cooling fan
F: filament

Claims (6)

An extruder main block 10;
A step motor (20) located on the back surface of the extruder main block (10) and capable of driving a transfer part inserted into the extruder main block (10); A transfer unit 30 located inside the extruder main block 10 and capable of discharging the filament F introduced from the upper side to the nozzle; A hot plate 50 located at a lower portion of the extruder main block 10 and capable of vibrating the introduced filament; And a nozzle (60) vertically penetrating the hot plate (50) and injecting filaments passing through the transfer part,
The nozzle 60 includes a guide pipe 61 for guiding the filament F introduced into the extruder main block 10 downwardly and a discharge pipe 61 for discharging the melted filament F, Wherein the upper surface of the discharge portion is larger than the diameter of the guide tube so that the upper surface of the discharge portion implements the latching protuberance 62, It is possible to prevent entry into the lower part of the discharge part,
The feeder 30 is positioned inside the space 11 and includes a pushing gear 31 fixed to the rotating shaft of the stepping motor 20 and a guide bearing The extrusion gear 31 has teeth at its outer side to impart a frictional force to the filament F flowing between the extrusion gear 31 and the guide bearing 32, And the filament F is attached to the extruding gear 31 so that the filament F is held by the extruding gear 31. The extruding gear 31 presses the filament F toward the nozzle 31, And is driven so as to be pushed to the side,
The guide bearing 32 is fixed to the filament changing switch 40 and moves in the left and right direction by the filament changing switch 40 so that the filament F inserted between the extrusion gear 31 and the guide bearing 32 ),
The filament changing switch 40 is formed in a shape of a letter "A", and a linear upper portion thereof is located on the front surface of the conveying portion 30, and a bent portion is formed to protrude to the outside of the extruder main block 10,
And a front cover 70 attached to the front surface of the extruder main block 10 and having an upper side fixed to the extruder main block 10 and a lower side fixed to the hot plate 50 The hot plate 50 is spaced apart from the extruder main block 10 by a predetermined distance to prevent heat from being transferred to the extruder main block 10 so that the filament F is melted before being introduced into the nozzle 60 In addition,
The front cover 70 includes a fan seating portion 71 for allowing a cooling fan 80 to be seated inside and a second through hole 71 of the hot plate 50 is formed on the lower side of the front cover 70. [ Wherein a groove (72) is provided to allow the opening (52) to be exposed to the outside,
A 3D printer extruder comprising an integral nozzle. delete delete delete delete delete
KR1020150102501A 2015-07-20 2015-07-20 Apparatus spouting 3d printing material KR101720672B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101910923B1 (en) 2017-07-06 2018-12-28 이성경 Discharge apparatus for 3D printer

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Publication number Priority date Publication date Assignee Title
KR101880572B1 (en) * 2017-03-03 2018-07-26 (주)쓰리디코리아 The 3D printing apparatus
US10875244B2 (en) 2017-05-17 2020-12-29 Slice Engineering LLC Adaptable high-performance extrusion head for fused filament fabrication systems
KR102151121B1 (en) * 2018-09-18 2020-09-02 (주)지이엠플랫폼 Nozzle assembly for 3d printer
KR102116389B1 (en) * 2018-10-02 2020-05-28 주식회사 메이커스테크놀로지 Material extruder structure for 3d printer and 3d printer having the same
KR102125288B1 (en) 2018-10-31 2020-06-22 주식회사 정록 3d printer
KR101997408B1 (en) 2018-10-31 2019-07-05 이수연 3d printer
CN112659552A (en) * 2020-11-30 2021-04-16 深圳市创想三维科技有限公司 3D printing nozzle

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KR101432121B1 (en) * 2013-06-25 2014-08-20 주식회사 오픈크리에이터즈 Nozzle assembly for three-demensional printer
KR101441030B1 (en) * 2014-05-02 2014-09-18 주식회사 대건테크 Extruder for 3-dimentional printer
CN204196260U (en) * 2014-09-10 2015-03-11 芜湖瀚博电子科技有限公司 A kind of 3D printer head heat abstractor

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KR101502342B1 (en) 2013-09-25 2015-03-13 (주)하이비젼시스템 Apparatus spouting 3d printing material by using screw and 3d printer using the apparatus

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Publication number Priority date Publication date Assignee Title
KR101432121B1 (en) * 2013-06-25 2014-08-20 주식회사 오픈크리에이터즈 Nozzle assembly for three-demensional printer
KR101441030B1 (en) * 2014-05-02 2014-09-18 주식회사 대건테크 Extruder for 3-dimentional printer
CN204196260U (en) * 2014-09-10 2015-03-11 芜湖瀚博电子科技有限公司 A kind of 3D printer head heat abstractor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101910923B1 (en) 2017-07-06 2018-12-28 이성경 Discharge apparatus for 3D printer

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