CN105216334A - A kind of induction heater, 3D printer extruder - Google Patents

A kind of induction heater, 3D printer extruder Download PDF

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Publication number
CN105216334A
CN105216334A CN201510790500.4A CN201510790500A CN105216334A CN 105216334 A CN105216334 A CN 105216334A CN 201510790500 A CN201510790500 A CN 201510790500A CN 105216334 A CN105216334 A CN 105216334A
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CN
China
Prior art keywords
induction
hole
heat block
induction heater
characterized
Prior art date
Application number
CN201510790500.4A
Other languages
Chinese (zh)
Inventor
李乾勇
李丽
Original Assignee
李乾勇
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李乾勇 filed Critical 李乾勇
Priority to CN201510790500.4A priority Critical patent/CN105216334A/en
Publication of CN105216334A publication Critical patent/CN105216334A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor

Abstract

The present invention relates to printing device technical field, solve the material that 3D printer extruder can only extrude low melting point, the crystal of on-fixed fusing point cannot be printed and there is the problem of higher melt metal.This extruder comprises feed mechanism and induction heater, feeding structure is arranged on above induction heater, the heat shield of the lower ending opening inner hollow that induction heater is connected to form primarily of upper diapire and periphery wall, be enclosed within the induction coil of described periphery wall outer surface, the vortex induction heat block being arranged on heat shield inside and the printing nozzle being connected to heat shield lower end composition, the inside of described vortex induction heat block is provided with the through hole of through whole vortex induction heat block, the lower end of this through hole communicates with printing nozzle, the upper end of through hole communicates with the via hole that upper diapire is arranged.The present invention both can complete the printing to plastics such as ABS, also can complete pair glass, metal print job, the outstanding advantages that multi-field application has can be met.

Description

A kind of induction heater, 3D printer extruder

Technical field

The present invention relates to printing device technical field, especially relate to a kind of induction heater, 3D printer extruder.

Background technology

It is the one of rapid shaping technique that 3D prints, and it is a kind of based on mathematical model file, uses powdery metal or plastics etc. can jointing material, is carried out the technology of constructed object by the mode successively printed.The field such as Making mold, industrial design of being everlasting is used to modeling, after gradually for the direct manufacture of some products, had the parts using this technology to print.

In 3D printing technique, topmost technology has: fused glass pellet technique (FusedDepositionModeling, FDM), selecting property laser sintering process (SelectiveLaserSintering, SLS), stereolithography apparatus technique (StereolithographyApparatus, SLA).

Fusion sediment technique (FDM), thread heat-fusible materials is carried out heating and melting by it, by the extruder with minute nozzle, material is extruded, and makes the wire material of melting in the shape in plane generating three-dimensional models cross section, each cross section is layering again, finally forms 3D solid.Because FDM technique is without the need to the support of laser system, moulding material used also relative moderate, overall cost performance is high, and safeguard simple, this is also the technical scheme that numerous desktop level 3D printer mainly adopts.

But, present stage based on the desktop level 3D printer of FDM technology extruder mainly with ABS and PLA for material, glass etc. can not be printed there is the crystal of on-fixed fusing point and various metal, limit application and the marketing of desktop level 3D printer.

Summary of the invention

The object of the invention is to: for prior art Problems existing, provide a kind of induction heater, the heater that this induction heater solves traditional 3D printer can only melt the problem of the material of low melting point.

The present invention also provides 3D printer extruder, this extruder solves 3D printer extruder based on FDM technology in the past can only extrude the material of the low melting point such as ABS plastic and PAL plastics, cannot print glass etc. and has the crystal of on-fixed fusing point and have the problem of higher melt metal.

Goal of the invention of the present invention is achieved through the following technical solutions:

A kind of induction heater, for heating material silk, it is characterized in that, the heat shield of the lower ending opening inner hollow that this heater is connected to form primarily of upper diapire and periphery wall, be enclosed within described periphery wall outer surface induction coil, be arranged on the vortex induction heat block of heat shield inside and be connected to the printing nozzle composition of heat shield lower end, the inside of described vortex induction heat block is provided with the through hole of through whole vortex induction heat block, the lower end of this through hole communicates with printing nozzle, and the upper end of through hole communicates with the via hole that upper diapire is arranged.

As further technical scheme, the shape of described vortex induction heat block and the internal cavities mating shapes of heat shield.

As further technical scheme, described vortex induction heat block profile is cylindrical.

As further technical scheme, the aperture of the through hole that vortex induction heat block is arranged and the external diameter of material silk match.

As further technical scheme, this heater also comprises the radiator that middle part is provided with through hole, and this radiator is located at the top of diapire, and the through hole of radiator communicates with the via hole on upper diapire.

As further technical scheme, the printing nozzle being connected to heat shield lower end can be replaced by the printing nozzle with different size jet holes.

A kind of 3D printer extruder, it is characterized in that, this extruder comprises feed mechanism and induction heater, and described feeding structure is arranged on above induction heater, is sent into by material silk in the through hole of vortex induction heat block.

As further technical scheme, this feed mechanism comprises stepper motor, extrudes wheel and driven pulley, the rotating shaft of stepper motor is connected with extruding to take turns, and extruding wheel and driven pulley mating reaction, being clamp-oned the through hole of vortex induction heat block by material silk from extruding between wheel with driven pulley.

As further technical scheme, this extruder comprises the fan of the setting rate for regulating the material silk after thawing, and the air outlet of this fan is facing to printing nozzle.

As further technical scheme, this extruder comprises the fan for accelerating radiator heat-dissipation, and the air outlet of this fan is facing to radiator.

Compared with prior art, the present invention has the following advantages:

1, the heating temperature range of induction heater can arrive accuracy controlling between thousands of degree at tens degree, thus both can melt the material of low melting point, also can melt dystectic material, and being heated of material silk is very even;

2,3D printer extruder both can complete the printing to plastics such as ABS, also can complete pair glass, metal print job, multi-field application can be met.

Accompanying drawing explanation

Fig. 1 be induction heater partly cut open structural representation;

Fig. 2 is the half sectional view of induction heater;

Fig. 3 is the 3-D solid structure schematic diagram of 3D printer extruder;

Fig. 4 is the front view of 3D printer extruder.

Accompanying drawing mark illustrates:

1. material silks in figure, 2. radiator, 3. induction coil, 4. heat shield, 5. vortex induction heat block, 6. printing nozzle, the material silk 7. melted, 8. stepper motor, 9. extrude wheel, 10. driven pulley, 11. for accelerating the fan of radiator heat-dissipation, and 12. for regulating the fan of the setting rate of the material silk after thawing;

21. is fin, and 22 is joint pin, diapire on 41., 42. times diapires, 43. via holes, 51. through holes.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

Embodiment 1

The present embodiment provides a kind of induction heater, and it is mainly used in heating material silk.As depicted in figs. 1 and 2, the heat shield 4 of the lower ending opening inner hollow that is connected to form primarily of upper diapire 41 and periphery wall 42 of this heater, the induction coil 3 being enclosed within periphery wall 42 outer surface, the vortex induction heat block 5 being arranged on heat shield 4 inside and the printing nozzle 6 that is connected to heat shield lower end form.Printing nozzle 6 is connected rear formation insulated cavity with heat shield 4, the heat preventing vortex induction heat block 5 from producing overflows.The inside of vortex induction heat block 5 is provided with the through hole 51 of through whole vortex induction heat block 5, and the lower end of this through hole 51 communicates with printing nozzle 6, and the upper end of through hole 51 communicates with the via hole 43 that upper diapire 41 is arranged.

Wherein, vortex induction heat block 5 adopts resistant to elevated temperatures material to make, and heat shield 4 and printing nozzle 6 adopt high temperature resistant and heat insulation material to make.At the present embodiment, vortex induction heat block 5 adopts the metal material of fusing point more than 1500 degree to make, and as tungsten etc., heat shield 4 adopts high temperature resistant heat insulation pottery to make, and printing nozzle 6 adopts high temperature resistant heat insulation pottery to make, and induction coil 3 adopts plain conductor.

High-frequency current is passed in induction coil 3, thus go out eddy current in the induced inside of vortex induction heat block 5, by eddy current, the temperature of vortex induction heat block 5 is raised, thus make the material silk 1 of the through hole 51 entering vortex induction heat block 5 be heated to molten condition.According to the difference of material silk 1, by accurately controlling size and the frequency of electric current in induction coil 3, can the heating temp of the eddy-current heating of controlled vortex flow accurately block 5, the coverage of variations in temperature from tens degree to thousands of degree, and then can melt the material silk 1 of different melting points.The material silk 7 of molten condition just can be used for piling up formation 3D model after the printing nozzle 6 bottom induction heater is extruded.By changing the printing nozzle 6 with different-diameter size jet hole, the melted material silk 7 of different-diameter size can be extruded, and then print the 3D product of various precision.

In addition, in order to effectively utilize space, and make the efficiency of heating surface higher, the shape of vortex induction heat block 5 and the internal cavities mating shapes of heat shield 4.

In order to again improve the efficiency of heating surface, vortex induction heat block 5 profile is designed to cylindrical, and the internal cavities of heat shield 4 is also cylindrical, and the cross section of the periphery wall 42 of heat shield 4 is also rounded, and the cross section of induction coil 3 is also circular.Such electromagnetic induction better effects if, and then the efficiency of heating surface is higher.

In order to again improve the efficiency of heating surface, the aperture of through hole 51 that vortex induction heat block 5 is arranged and the external diameter of material silk 1 match, and such thermal conduction effect is better.

In order to avoid the material silk 1 be positioned at above upper diapire 41 is overbated, this heater also comprises the radiator 2 that middle part is provided with through hole, and this radiator 2 is located at the top of diapire 41, and the through hole of radiator 41 communicates with the via hole on upper diapire 41.

The material of radiator 2 also needs exotic material to make, and the present embodiment adopts thermal conductive ceramic to make.

The radiator 2 of the present embodiment is made up of joint pin 22 and fin 21, offers through hole in the middle part of joint pin 22, and fin 21 in the form of a ring, is socketed on joint pin 22.

Embodiment 2

The present embodiment provides a kind of 3D printer extruder, and as shown in Figure 3, Figure 4, this extruder comprises the induction heater recorded in feed mechanism and embodiment 1.Feeding structure is arranged on above induction heater, is sent in the through hole 51 of vortex induction heat block 5 by material silk 1.If induction heater is provided with radiator 2, then material silk 1 is through after radiator 2, enters into induction heater inside.

Feed mechanism comprises stepper motor 8, extrudes wheel 9 and driven pulley 10, the rotating shaft of stepper motor with extrude wheel 9 and be connected.Extrude wheel 9 and driven pulley 10 mating reaction, by material silk 1 from extrude clamp-on vortex induction heat block 5 between wheel 9 and driven pulley 10 through hole 51.

In the parts contacted with material silk 1 in extruder, extrude wheel 9 and driven pulley 10, heat shield 4, printing nozzle 6 are high temperature resistant heat insulation ceramic material, radiator 2 is thermostable heat-conductive ceramic material, to adapt to extrude the higher material silk of fusing point.When printing, stepper motor 8 drives and extrudes wheel 9, is clamp-oned in induction heater by material silk 1 and heats.In the induction coil 3 of induction heater periphery, pass to high-frequency current, go out eddy current with this vortex induction heat block 5 induced inside in induction heater, vortex induction heat block 5 is generated heat, and then heating and melting material silk.While constantly clamp-oning material silk 1, the material silk 1 of the thawing printing nozzle 6 not bottom cracked ends induction heater is extruded, and then carries out 3D printing.

When printing the material of fusing point more than 400 degrees Celsius, require to be full of nitrogen in working space, with avoid responding to metal parts and metal material silk oxidized.According to the difference of material silk type, the temperature to needing heating can be regulated and controled easily and accurately by the size of size of current in regulating winding and power frequency, and then the 3D realizing different materials type prints.

In addition, this extruder also can arrange the fan 12 of the setting rate for regulating the material silk after thawing, and the air outlet of this fan is facing to printing nozzle.Its effect is, according to the difference of material silk type, by controlling the air output of fan 12, and then regulates the setting rate of the material silk 7 after melting, thus forms accurate 3D printer model.

In addition, extruder also can arrange the fan 11 for accelerating radiator heat-dissipation, and the air outlet of this fan 11 is facing to radiator 2.Its effect is: for accelerating the heat radiation of radiator 2, avoids the material silk on top to overbate, and the extrusion of wheel to material silk is extruded in impact

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, it should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. an induction heater, for heating material silk, it is characterized in that, the heat shield of the lower ending opening inner hollow that this heater is connected to form primarily of upper diapire and periphery wall, be enclosed within described periphery wall outer surface induction coil, be arranged on the vortex induction heat block of heat shield inside and be connected to the printing nozzle composition of heat shield lower end, the inside of described vortex induction heat block is provided with the through hole of through whole vortex induction heat block, the lower end of this through hole communicates with printing nozzle, and the upper end of through hole communicates with the via hole that upper diapire is arranged.
2. a kind of induction heater according to claim 1, is characterized in that, the shape of described vortex induction heat block and the internal cavities mating shapes of heat shield.
3. a kind of induction heater according to claim 2, is characterized in that, described vortex induction heat block profile is cylindrical.
4. a kind of induction heater according to claim 1, is characterized in that, the aperture of the through hole that vortex induction heat block is arranged and the external diameter of material silk match.
5. a kind of induction heater according to claim 1, is characterized in that, this heater also comprises the radiator that middle part is provided with through hole, and this radiator is located at the top of diapire, and the through hole of radiator communicates with the via hole on upper diapire.
6. a kind of induction heater according to claim 1, is characterized in that, the printing nozzle being connected to heat shield lower end can be replaced by the printing nozzle with different size jet holes.
7. the 3D printer extruder of induction heater described in an application rights requirement 1, it is characterized in that, this extruder comprises feed mechanism and induction heater, and described feeding structure is arranged on above induction heater, is sent into by material silk in the through hole of vortex induction heat block.
8. a kind of 3D printer extruder according to claim 7, it is characterized in that, this feed mechanism comprises stepper motor, extrudes wheel and driven pulley, the rotating shaft of stepper motor is connected with extruding to take turns, extrude wheel and driven pulley mating reaction, material silk is clamp-oned the through hole of vortex induction heat block from extruding between wheel and driven pulley.
9. a kind of 3D printer extruder according to claim 7, is characterized in that, this extruder comprises the fan of the setting rate for regulating the material silk after thawing, and the air outlet of this fan is facing to printing nozzle.
10. a kind of 3D printer extruder according to claim 7, it is characterized in that, this extruder comprises the fan for accelerating radiator heat-dissipation, and the air outlet of this fan is facing to radiator.
CN201510790500.4A 2015-11-17 2015-11-17 A kind of induction heater, 3D printer extruder CN105216334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510790500.4A CN105216334A (en) 2015-11-17 2015-11-17 A kind of induction heater, 3D printer extruder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510790500.4A CN105216334A (en) 2015-11-17 2015-11-17 A kind of induction heater, 3D printer extruder
PCT/CN2016/104485 WO2017084500A1 (en) 2015-11-17 2016-11-04 Induction heater and 3d printer/extruder

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CN105216334A true CN105216334A (en) 2016-01-06

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105799345A (en) * 2016-05-11 2016-07-27 南京机电职业技术学院 Full-automatic steel seal machine
CN106186644A (en) * 2016-06-27 2016-12-07 中国科学院宁波材料技术与工程研究所 Glass 3D printing head assembly based on fused glass pellet and Method of printing
KR20170011993A (en) 2015-07-23 2017-02-02 조경일 Metal filament for 3D printer
CN106392076A (en) * 2016-06-21 2017-02-15 中国科学院宁波材料技术与工程研究所 3D printing system and print head device thereof
WO2017084500A1 (en) * 2015-11-17 2017-05-26 李乾勇 Induction heater and 3d printer/extruder
CN107285609A (en) * 2017-08-11 2017-10-24 贵州云上左岸科技有限公司 A kind of 3D printer and Method of printing for being used to print vitreum
KR20180113016A (en) * 2017-04-05 2018-10-15 주식회사 본시스템즈 Pellet type raw material extruder
CN109476064A (en) * 2016-07-28 2019-03-15 罗伯特·博世有限公司 Temperature control system for 3D printer extruder head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT520657A1 (en) * 2017-12-05 2019-06-15 Konrad Schreiner Printhead for the layered application of material

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CN203680811U (en) * 2014-01-20 2014-07-02 广州捷和电子科技有限公司 Feeding mechanism of 3D (three-dimensional) printer
CN103894614A (en) * 2014-04-17 2014-07-02 机械科学研究总院先进制造技术研究中心 Metal material melt extrusion device based on high-frequency induction heating
CN104593613A (en) * 2015-01-07 2015-05-06 江苏省电力公司 3D printing metal smelting device

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CN103786344B (en) * 2014-01-20 2017-05-31 广州捷和电子科技有限公司 The feed mechanism of 3D printer
CN105216334A (en) * 2015-11-17 2016-01-06 李乾勇 A kind of induction heater, 3D printer extruder

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Publication number Priority date Publication date Assignee Title
CN203680811U (en) * 2014-01-20 2014-07-02 广州捷和电子科技有限公司 Feeding mechanism of 3D (three-dimensional) printer
CN103894614A (en) * 2014-04-17 2014-07-02 机械科学研究总院先进制造技术研究中心 Metal material melt extrusion device based on high-frequency induction heating
CN104593613A (en) * 2015-01-07 2015-05-06 江苏省电力公司 3D printing metal smelting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170011993A (en) 2015-07-23 2017-02-02 조경일 Metal filament for 3D printer
WO2017084500A1 (en) * 2015-11-17 2017-05-26 李乾勇 Induction heater and 3d printer/extruder
CN105799345A (en) * 2016-05-11 2016-07-27 南京机电职业技术学院 Full-automatic steel seal machine
CN105799345B (en) * 2016-05-11 2018-07-13 南京机电职业技术学院 A kind of full-automatic marking press
CN106392076A (en) * 2016-06-21 2017-02-15 中国科学院宁波材料技术与工程研究所 3D printing system and print head device thereof
CN106186644A (en) * 2016-06-27 2016-12-07 中国科学院宁波材料技术与工程研究所 Glass 3D printing head assembly based on fused glass pellet and Method of printing
CN109476064A (en) * 2016-07-28 2019-03-15 罗伯特·博世有限公司 Temperature control system for 3D printer extruder head
KR20180113016A (en) * 2017-04-05 2018-10-15 주식회사 본시스템즈 Pellet type raw material extruder
KR101981599B1 (en) * 2017-04-05 2019-05-23 주식회사 본시스템즈 Pellet type raw material extruder
CN107285609A (en) * 2017-08-11 2017-10-24 贵州云上左岸科技有限公司 A kind of 3D printer and Method of printing for being used to print vitreum

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