WO2022147641A1 - 一种fdm打印机喷头及应用其的3d打印机 - Google Patents

一种fdm打印机喷头及应用其的3d打印机 Download PDF

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Publication number
WO2022147641A1
WO2022147641A1 PCT/CN2021/070249 CN2021070249W WO2022147641A1 WO 2022147641 A1 WO2022147641 A1 WO 2022147641A1 CN 2021070249 W CN2021070249 W CN 2021070249W WO 2022147641 A1 WO2022147641 A1 WO 2022147641A1
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WO
WIPO (PCT)
Prior art keywords
heating block
fdm printer
radiator
feeding wheel
feeding
Prior art date
Application number
PCT/CN2021/070249
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English (en)
French (fr)
Inventor
贺云
林慧刚
李泽彬
Original Assignee
深圳原子智造科技有限公司
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Publication date
Application filed by 深圳原子智造科技有限公司 filed Critical 深圳原子智造科技有限公司
Priority to PCT/CN2021/070249 priority Critical patent/WO2022147641A1/zh
Priority to CN202180001118.4A priority patent/CN113874196B/zh
Priority to US17/564,203 priority patent/US20220212403A1/en
Publication of WO2022147641A1 publication Critical patent/WO2022147641A1/zh

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Classifications

    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/295—Heating elements
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/321—Feeding
    • 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
    • B33Y10/00—Processes of additive manufacturing
    • 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

Definitions

  • the invention relates to the technical field of 3D printing, in particular to an FDM printer nozzle and a 3D printer using the same.
  • FDM Fused Deposition
  • 3D printing Modeling is a process Fused Deposition Manufacturing (FDM) process.
  • the materials of FDM are generally thermoplastic materials, such as wax, ABS, nylon, etc., which are supplied in the form of filaments, and the materials are heated and melted in the nozzle. The nozzle moves along the section profile and filling trajectory of the part, while extruding the molten material, the material solidifies rapidly, and condenses with the surrounding material.
  • the purpose of the present invention is to provide an FDM printer nozzle and a 3D printer using the same, which can overcome the above-mentioned defects and can use high elastic materials with Shore hardness below 80A for 3D printing.
  • An FDM printer nozzle includes: a motor, a feeding component, a radiator, a heating block, and an extrusion nozzle, and further includes a throat assembly, which is made of a material with good high temperature resistance and heat conduction resistance The throat and the fixing piece are formed, the throat is installed between the radiator and the heating block through the fixing piece, and there is a space between the upper end face of the throat and the radiator. gap; the motor drives the feeding component, sends the material to the heating block through the throat, and extrudes it through the nozzle.
  • the fixing member includes screws, the screws are in a group, one end of the group of screws is connected with the heat sink, and the other end is connected with the heating block.
  • the fixing member further comprises a set screw, and the set screw passes through the heating block and abuts on the screw.
  • the screw is provided with a recess, and the set screw passes through the heating block and is located at the recess.
  • the throat is made of a material with high temperature resistance, good heat insulation and self-lubricating properties.
  • the throat pipe is made of Teflon material.
  • the feeding component is arranged above the radiator.
  • the feeding assembly includes two feeding wheels: an active feeding wheel and a passive feeding wheel; the active feeding wheel is connected to the output shaft of the motor, and the material is located exactly between the active feeding wheel and the passive feeding wheel. Between the feeding wheels, it moves forward under the driving of the active feeding wheel and the passive feeding wheel.
  • the driving feed wheel is a toothed gear.
  • a groove is provided in the middle of the passive feeding wheel.
  • an arc structure is formed on the upper surface of the radiator, and the arc structure is formed with two arc segments, and the two arc segments are respectively adapted to the outer contours of the active feeding wheel and the passive feeding wheel. , and the outer contour shape of the arc tip at the junction of the two arc segments is exactly matched in the gap formed between the two feeding wheels.
  • two fans for convection heat dissipation are installed outside the radiator.
  • the two fans used for convection heat dissipation are respectively, one is a blower fan for intake air, and the other is a suction fan for exhaust air.
  • an air guide hood is installed under the ventilation fan.
  • the present invention also provides a 3D printer, which includes all the above-mentioned FDM printer nozzles.
  • the motor device of the present invention is installed in the print head of the printer to realize the near-end feeding, which can feed high elastic materials with Shore hardness below 80A, and the throat is made of iron fluoride with good high temperature resistance and heat insulation function.
  • the throat pipe Long material, there is a gap between the upper end face of the throat pipe and the radiator, which greatly reduces the heat conduction through the throat pipe, so that the temperature of the entire feeding channel is greatly reduced, ensuring that the material is not softened, and the temperature of the part above the heating block is low enough , the fed low-hardness and high-elasticity materials can be effectively transferred before entering the heating block.
  • Fig. 1 is the assembly drawing of the present invention
  • Fig. 2 is the operation diagram of the present invention
  • Fig. 3 is the assembly drawing of the radiator of the present invention and two fans;
  • Fig. 4 is the schematic diagram of two fans wrapping radiator of the present invention.
  • Figure 5 is a top view of the passive feed wheel of the present invention.
  • the present invention provides an FDM printer nozzle, including a motor 1, a feeding assembly 2, a radiator 3, a heating block 4, an extrusion nozzle 5, and a throat assembly 6;
  • the feeding assembly 2 is located above the radiator 3, and the feeding assembly 2 includes two feeding wheels: an active feeding wheel 21 and a passive feeding wheel 22; the active feeding wheel 21 and the The output shaft of motor 1 is connected.
  • the active feeding wheel 21 is a toothed gear; the middle of the passive feeding wheel 22 is provided with a groove 221 .
  • the upper surface of the radiator 3 is formed with an arc structure, and the arc structure is formed with two arc segments, the two arc segments are respectively adapted to the outer contours of the active feeding wheel 21 and the passive feeding wheel 22, and the arc tip at the joint of the two arc segments is The shape of the outer contour just corresponds to the gap formed between the two feeding wheels.
  • the arc structure formed on the upper surface of the radiator 3 minimizes the gap between it and the two feeding wheels, so that the entire feeding channel is close to closed. And it is smooth in a straight line. When printing with a highly elastic material with Shore hardness below 80A, the material 7 will not deviate, and it is conducive to the transmission of force during feeding.
  • two fans for convection heat dissipation are installed outside the heat sink 3 , and the two fans for convection heat dissipation wrap the heat sink 3 .
  • the two fans are respectively, one is a blowing fan 81 for air intake, and the other is an exhaust fan 82 for extracting air; The extracted hot air is led out to further reduce the temperature of the radiator 3 and the feeding channel.
  • the throat pipe assembly 6 includes a throat pipe 61 and a fixing member 62 made of materials with high temperature resistance, good heat insulation and self-lubricating properties; in this embodiment, the throat pipe 61 is made of Made of Teflon material.
  • the throat pipe 61 is installed between the radiator 3 and the heating block 4 through the fixing piece 62, and the throat pipe 61 is connected with the heating block 4 through its own thread; there is a gap between the upper end face of the throat pipe 61 and the radiator 3;
  • the fixing member 62 includes: a screw 621 and a set screw 622. One end of the screw 621 is connected to the radiator 3 and the other end is connected to the heating block 4; the set screw 622 passes through the heating block 4 and abuts on the screw 621.
  • the screw 621 is provided with a depression, and the set screw 622 passes through the heating block 4 and is just located in the depression, so as to prevent the screw 621 from loosening when it passes through the heating block 4 and is connected to the radiator 3, and strengthens the connection between the heating block 4 and the radiator 3.
  • the present invention is near-end feeding.
  • the nozzle of the printer After the nozzle of the printer is installed, it can be printed with a highly elastic material with a Shore hardness below 80A.
  • the throat 61 made of well-insulated and self-lubricating material is sent to the heating block 4 and extruded through the extrusion nozzle 5;
  • the material 7 is located between the active feeding wheel 21 and the passive feeding wheel 22; the gear of the toothed active feeding wheel 21 increases the bite force on the material 7, and the groove 221 in the middle of the passive feeding wheel 22 makes the material 7 A part of the material 7 is trapped in the groove 221, and the material 7 is positioned for feeding, so that the material 7 does not slide, and the downward traveling route is more accurate.
  • the gear of the toothed active feeding wheel 21 increases the bite force on the material 7, and the groove 221 in the middle of the passive feeding wheel 22 makes the material 7 A part of the material 7 is trapped in the groove 221, and the material 7 is positioned for feeding, so that the material 7 does not slide, and the downward traveling route is more accurate.
  • the material 7 starts to move downward. Since the arc structure formed on the upper surface of the radiator 3 matches the shape of the two feeding wheels, the material 7 will not deviate. directly into the radiator 3; the throat 61 made of a material with high temperature resistance, good heat insulation and self-lubricating under the radiator 3 blocks the heat, prevents the heat from being conducted to the radiator 3, and wraps the
  • the two fans of the radiator 3 are used for convection heat dissipation.
  • the blower fan blows the hot air of the radiator 3 to the exhaust fan to export the hot air through the air guide cover 821, so that the material 7 in the channel of the radiator 3 will not be softened in advance.
  • the throat pipe 61 not only has high temperature resistance, good heat insulation, but also has a self-lubricating function.
  • the pipe 61 enables the material 7 to pass more smoothly and quickly in the passage of the throat 61 which is resistant to high temperature, well insulated and lubricated.
  • the lubricating throat 61 keeps the temperature of the feeding passage above the heating block 4 low enough, so that the material 7 can be effectively transmitted by the thrust of the active feeding wheel 21 and the passive feeding wheel 22, and smoothly move downward until it enters the heating block 4, Finally, it is extruded from the extrusion nozzle 5.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the present invention also provides a 3D printer, which includes the FDM printer nozzle of the first embodiment.

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Abstract

一种FDM打印机喷头及应用其的3D打印机，该FDM打印机喷头包括电机(1)、送料组件(2)、散热器(3)、加热块(4)、挤出喷嘴(5)，其还进一步包括有喉管组件(6)，喉管组件(6)包括由具有良好耐高温且阻隔热传导的材料制作而成的喉管(61)及装定件(62)，喉管(61)通过装定件(62)装设在散热器(3)与加热块(4)之间，喉管(61)上端面与散热器(3)之间留有间隙；电机(1)带动送料组件(2)，将材料(7)通过喉管(61)送至加热块(4)，通过挤出喷嘴(5)挤出。上述喉管(61)采用具有耐高温、隔热良好且自润滑的材料或铁氟龙材料制成，大大减少了通过喉管(61)的热传导，使加热块(4)以上部分的进料通道温度都足够低，保证材料不被软化，送进的低硬度高弹性材料在进入加热块(4)之前都能够有效的传递。

Description

一种FDM打印机喷头及应用其的3D打印机 技术领域
本发明涉及3D打印技术领域，具体涉及一种FDM打印机喷头及应用其的3D打印机。
 背景技术
3D打印中的FDM（Fused Deposition Modeling）是工艺熔融沉积制造（FDM）工艺。FDM的材料一般是热塑性材料，如蜡、ABS、尼龙等，以丝状供料，材料在喷头内被加热熔化。喷头沿零件截面轮廓和填充轨迹运动，同时将熔化的材料挤出，材料迅速凝固，并与周围的材料凝结。
 技术问题
现有FDM打印机大多采用远端送料，送料电机远离喷头，无法将软料送至喷头，因此大多只能打印硬料，如PLA，ABS等，少数近端送料的打印机，由于进料通道温度较高，且材料的送丝的路径设计不合理，也只能采用邵氏硬度在80A以上的高硬度热塑性弹性体材料进行打印。
 技术解决方案
本发明的目的在于提供一种FDM打印机喷头及应用其的3D打印机，其可克服上述缺陷，可采用邵氏硬度在80A以下的高弹性材料进行3D打印。
为了实现上述发明目的，本发明采用如下技术方案：
一种FDM打印机喷头，其包括：电机、送料组件、散热器、加热块、挤出喷嘴，其还进一步包括有喉管组件，所述喉管组件包括由具有良好耐高温且阻隔热传导的材料制作而成的喉管及装定件，所述喉管通过所述装定件装设在所述散热器与所述加热块之间，所述喉管上端面与所述散热器之间留有间隙；所述电机带动所述送料组件，将材料通过所述喉管送至所述加热块，通过喷嘴挤出。
优选地，所述装定件包括有螺钉，所述螺钉为一组，所述的一组螺钉的一端与所述散热器相连，另一端与所述加热块相连。
优选地，所述装定件还进一步包括有紧定螺钉，所述紧定螺钉穿过所述加热块抵接在所述的螺钉上。
优选地，所述螺钉上设有凹陷，所述紧定螺钉穿过所述加热块恰好位于所述的凹陷处。
优选地，所述喉管由具有耐高温、隔热良好且自润滑的材料制作而成。
优选地，所述的喉管由铁氟龙材料制作而成。
优选地，所述的送料组件设于所述的散热器上方位置。
优选地，所述的送料组件，包括两个送料轮：主动送料轮、被动送料轮；所述的主动送料轮与所述的电机的输出轴相连，材料恰好位于所述的主动送料轮与被动送料轮之间，在所述的主动送料轮与被动送料轮带动下向前移动。
优选地，所述主动送料轮为带齿的齿轮。
优选地，所述被动送料轮中间设有凹槽。
优选地，所述散热器的上表面形成有弧形结构，所述弧形结构形成有两弧段，所述的两弧段分别与所述的主动送料轮、被动送料轮的外轮廓相适应，且所述的两弧段结合处的弧尖外轮廓形状恰好对应匹配在所述两个送料轮之间形成的间隙中。
优选地，所述散热器外部装设有两个用于对流散热的风扇。
优选地，所述两个用于对流散热的风扇分别为，一个是用于进风的吹风风扇、另一个是用于抽出风的抽风风扇。
优选地，在所述抽风风扇下面装设有导风罩。
 有益效果
本发明还提供了一种3D打印机，其包括上述所有的FDM打印机喷头。
采用上述技术方案后，本发明电机装置在打印机喷头内，实现了近端送料，能送进邵氏硬度在80A以下的高弹性材料，且喉管为具有良好耐高温且隔热功能的铁氟龙材料，喉管上端面与所述散热器之间留有间隙，大大减少了通过喉管的热传导，使得整个进料通道温度大大降低，保证材料不被软化，加热块以上部分温度都足够低，所送进的低硬度高弹性材料在进入加热块之前都能够有效的传递。
 附图说明
图1是本发明的装配图；
图2是本发明的运作图；
图3是本发明散热器与两个风扇的装配图；
图4是本发明两个风扇包裹散热器的示意图；
图5是本发明被动送料轮的俯视图。
 本发明的最佳实施方式
为了使本发明的技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接；可以是直接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一：
如图1所示，本发明提供一种FDM打印机喷头，包括电机1、送料组件2、散热器3、加热块4、挤出喷嘴5、喉管组件6；
在本实施例中，如图1和图5所示， 送料组件2设于散热器3上方位置，送料组件2包括两个送料轮：主动送料轮21、被动送料轮22；主动送料轮21与电机1的输出轴相连。主动送料轮21为带齿的齿轮；被动送料轮22中间设有凹槽221。
散热器3的上表面形成有弧形结构，弧形结构形成有两弧段，两弧段分别与主动送料轮21、被动送料轮22的外轮廓相适应，且两弧段结合处的弧尖外轮廓形状恰好对应匹配在两个送料轮之间形成的间隙中，散热器3的上表面形成的弧形结构将其与两个送料轮的间隙做到最小，使整个进料通道是接近封闭且呈直线地通畅，采用邵氏硬度在80A以下的高弹性材料打印时材料7不会跑偏，且有利于送料时力的传递。
如图3和图4所示，散热器3外部装设有两个用于对流散热的风扇，两个用于对流散热的风扇包裹着散热器3。两个风扇分别为，一个是用于进风的吹风风扇81、另一个是用于抽出风的抽风风扇82；在抽风风扇82下面装设有导风罩821，导风罩821将抽风风扇82抽出的热风导出，进一步的降低散热器3及送料通道的温度。
如图1所示，喉管组件6包括有由具有耐高温、隔热良好且自润滑的材料制作而成的喉管61及装定件62；在本实施例中，该喉管61是采用铁氟龙材料制作而成。
喉管61通过装定件62装设在散热器3与加热块4之间，喉管61通过自身螺纹和加热块4连接；喉管61上端面与散热器3之间留有间隙；
装定件62包括：螺钉621、紧定螺钉622，螺钉621的一端与散热器3相连，另一端与加热块4相连；紧定螺钉622穿过加热块4抵接在螺钉621上。螺钉621上设有凹陷，所述紧定螺钉622穿过加热块4恰好位于凹陷处，防止螺钉621穿过加热块4与散热器3连接时出现松动，加固了加热块4与散热器3的定位，且喉管61上端面与散热器3之间留有间隙，这样设计使喉管61不受轴上压力，从而保证其在使用过程中不变形，而且大大减少了通过喉管的热传导，保证材料不被软化。
如图2所示，本发明为近端送料，当打印机喷头安装好后，可以采用邵氏硬度在80A以下的高弹性材料进行打印，电机1带动送料组件2，将材料7通过由具有耐高温、隔热良好且自润滑的材料制作而成的喉管61送至加热块4，通过挤出喷嘴5挤出；
电机1启动，材料7恰好位于主动送料轮21与被动送料轮22之间；带齿的主动送料轮21的齿轮增加了对材料7的咬合力，被动送料轮22中间的凹槽221使材料7的一部分陷在凹槽221处，对材料7进行进料的定位，使材料7不滑动，向下行进的路线更精准，通过主动送料轮21的咬合与被动送料轮22的定位，这样的设计也增加了对材料7向下行进的推动力。
在主动送料轮21与被动送料轮22带动下，材料7开始向下运动，由于散热器3的上表面形成的弧形结构与两个送料轮的外形相匹配，所以材料7不会跑偏，直接就进入了散热器3；散热器3下方由具有耐高温、隔热良好且自润滑的材料制作而成的喉管61对热量进行阻隔，阻隔热量传导至散热器3，且包裹着所述散热器3的两个用于对流散热的风扇，吹风风扇将散热器3的热风吹到抽风风扇通过导风罩821导出热风，使材料7在散热器3的通道不会提前软化。
喉管61不仅耐高温、隔热良好，且具有自润滑功能，材料7从散热器3的通道顺利地进入喉管61后，具有耐高温、隔热良好且自润滑的材料制作而成的喉管61使材料7在耐高温、隔热良好且润滑的喉管61通道中，更顺畅且快速地通过，在本实施例中，采用铁氟龙材料制作而成的耐高温、隔热良好且润滑喉管61使加热块4以上部分的进料通道温度都足够低，使材料7可以有效地被主动送料轮21与被动送料轮22的推力传递，顺畅地向下运动直至进入加热块4，最后从挤出喷嘴5中挤出。
实施例二：
本发明还提供了一种3D打印机，其包括实施例一的FDM打印机喷头。
以上内容是结合具体的实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (15)

  1. 一种FDM打印机喷头，包括电机（1）、送料组件（2）、散热器（3）、加热块（4）、挤出喷嘴（5），其特征在于：其还进一步包括有喉管组件（6），所述喉管组件（6）包括由具有良好耐高温且阻隔热传导的材料制作而成的喉管（61）及装定件（62），所述喉管（61）通过所述装定件（62）装设在所述散热器（3）与所述加热块（4）之间，所述喉管（61）上端面与所述散热器（3）之间留有间隙；所述电机（1）带动所述送料组件（2），将材料（7）通过所述喉管（61）送至所述加热块（4），通过所述挤出喷嘴（5）挤出。
  2. 根据权利要求1所述的一种FDM打印机喷头，其特征在于，所述装定件（62）包括有螺钉（621），所述螺钉（621）为一组，所述的一组螺钉（621）的一端与所述散热器（3）相连，另一端与所述加热块（4）相连。
  3. 根据权利要求2所述的一种FDM打印机喷头，其特征在于，所述装定件（62）还进一步包括有紧定螺钉（622），所述紧定螺钉（622）穿过所述加热块（4）抵接在所述的螺钉（621）上。
  4. 根据权利要求3所述的一种FDM打印机喷头及应用其的3D打印机，其特征在于，所述螺钉（621）上设有凹陷，所述紧定螺钉（622）穿过所述加热块（4）恰好位于所述的凹陷处。
  5. 根据权利要求1-4任一所述的一种FDM打印机喷头，其特征在于，所述喉管（61）由具有耐高温、隔热良好且自润滑的材料制作而成。
  6. 根据权利要求5所述的一种FDM打印机喷头，其特征在于，所述喉管（61）由铁氟龙材料制作而成。
  7. 根据权利要求6所述的一种FDM打印机喷头，其特征在于，所述送料组件（2）设于所述散热器（3）上方位置。
  8. 根据权利要求7所述的一种FDM打印机喷头，其特征在于，所述送料组件（2），包括两个送料轮：主动送料轮（21）、被动送料轮（22）；所述主动送料轮（21）与所述电机（1）的输出轴相连，所述材料（7）恰好位于所述主动送料轮（21）与所述被动送料轮（22）之间，在所述主动送料轮（21）与所述被动送料轮（22）带动下向前移动。
  9. 根据权利要求8所述的一种FDM打印机喷头，其特征在于，所述主动送料轮（21）为带齿的齿轮。
  10. 根据权利要求9所述的一种FDM打印机喷头，其特征在于，所述被动送料轮（22）中间设有凹槽（221）。
  11. 根据权利要求8所述的一种FDM打印机喷头，其特征在于，所述散热器（3）的上表面形成有弧形结构，所述弧形结构形成有两弧段，所述的两弧段分别与所述的主动送料轮（21）、被动送料轮（22）的外轮廓相适应，且所述的两弧段结合处的弧尖外轮廓形状恰好对应匹配在所述两个送料轮之间形成的间隙中。
  12. 根据权利要求1所述的一种FDM打印机喷头，其特征在于，所述散热器（3）外部装设有包裹着所述散热器（3）的两个用于对流散热的风扇（8）。
  13. 根据权利要求 12 所述的一种FDM打印机喷头，其特征在于，所述两个用于对流散热的风扇分别为，一个是用于进风的吹风风扇（81）、另一个是用于抽出风的抽风风扇（82）。
  14. 根据权利要求13所述的一种FDM打印机喷头，其特征在于，在所述抽风风扇（82）下面装设有导风罩（821）。
  15. 一种3D打印机，其特征在于，其包括有权利要求1-14任一所述的FDM打印机喷头。
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