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CN103878984A - Extrusion nozzle device of large three-dimensional (3D) printer - Google Patents

Extrusion nozzle device of large three-dimensional (3D) printer Download PDF

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CN103878984A
CN103878984A CN 201410157435 CN201410157435A CN103878984A CN 103878984 A CN103878984 A CN 103878984A CN 201410157435 CN201410157435 CN 201410157435 CN 201410157435 A CN201410157435 A CN 201410157435A CN 103878984 A CN103878984 A CN 103878984A
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wire
guide
mechanism
extrusion
heating
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CN 201410157435
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Chinese (zh)
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CN103878984B (en )
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李健
林贤坤
汪铁丰
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广西科技大学
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Abstract

The invention discloses an extrusion nozzle device of a large three-dimensional (3D) printer. The extrusion nozzle device comprises a support, and a heating extrusion mechanism and a wire guide mechanism which are arranged on the support, wherein the wire guide mechanism consists of a left wire guide mechanism and a right wire guide mechanism with the same structure; the wire guide mechanism comprises a wire guide tip wheel, a stepping motor, a fixing screw rod and a top bolt; the wire guide tip wheel is arranged on one side of an enclosure and is in transmission connection with the stepping motor arranged in the enclosure; the fixing screw rod and the wire guide tip wheel are opposite to each other; the top bolt is arranged at one end of the fixing screw rod and is moved to one side of the wire guide tip wheel under push of the fixing screw rod; the heating extrusion mechanism consists of a left heating extrusion mechanism and a right heating extrusion mechanism with the same structure; the heating extrusion mechanism comprises a nozzle, heating rod, a radiator and a wire guide sleeve; the heating extrusion mechanism is arranged on the lower part of the wire guide mechanism; an axle wire of the wire guide sleeve is correspondingly consistent with the feeding direction of the wire guide mechanism. The extrusion nozzle device is high in wire guide friction force, reliable in wire feed and high in precision, the structural stability and hardness of the model can be obviously improved, and the printing quality and printing speed are improved.

Description

一种大型3D打印机的挤出喷头装置 A large, 3D printer extrusion nozzle means

技术领域 FIELD

[0001] 本发明涉及一种打印机配件,尤其涉及一种用于大型3D打印机的挤出喷头装置。 [0001] The present invention relates to a printer parts, and particularly to an extrusion head device for large 3D printer. 背景技术 Background technique

[0002] 现阶段3D打印机喷头挤出装置主要有以下两类:(I)单喷头挤出机构,其采用的是单电机单喷头,负责打印支撑和模型;(2)多喷头挤出机构,即多电机带动多喷头或单电机带动多喷头,最常见的有双电机带动双喷头和单电机带动双喷头;前者工作原理是一个电机控制一个喷头打印支撑材料(内部填充),另外一个电机控制另一个喷头打印模型;后者是一个电机通过特定机构在计算机的控制下分别对支撑材料和模型的打印。 [0002] 3D printer nozzle stage extrusion apparatus are the following two types: (I) means a single nozzle extruder, which uses a single motor single nozzle, and is responsible for supporting the print model; (2) multiple extrusion nozzle means, i.e., multiple motor drives the multi-nozzle or a single motor drives the multi-nozzle, the most common double motor driven double head and a single motor to drive the dual head; the former principle is a motor controlling a head print support material (internal filling), the other motor control another print head model; the latter is a particular mechanism, respectively, through the printing machine of support material and the model under computer control.

[0003] 以上两类喷头挤出机构存在如下不足: [0003] The above two types of the following defects head extruder configuration:

1.两类喷头挤出机构的共同特点是采用同一孔径的喷嘴(其孔径一般为φ:1 U.4WW.),这一特点是导致带喷嘴类型的3D打印机的精度和速度止步不前的重要原因,既不能满足打印精度,又不能提高速度(因为小口径喷嘴具有较好的成形质量,要保证打印质量其喷嘴直径不能过大,但用小口径喷嘴支撑材料(内部填充),带来的却是成倍的打印时间);为在保证打印质量的前提下提高打印速度一般通过优化成形方向、支撑方式、切层算法的优化等方法,而这些方法对打印速度和打印质量的提高是很有限的,特别是针对大型零部件的打印; 1. Features common extrusion nozzle types using the same mechanism is a nozzle aperture (typically a pore size of φ:. 1 U.4WW), this characteristic results in accuracy and speed are the type with a nozzle 3D printer stalled important reasons, neither meet the print accuracy, speed can not increase (because of the small diameter nozzles having a better quality molding, to ensure that the print quality is not too large diameter of the nozzle, the nozzle support material with a small diameter (inner fill), bringing but the printing time is doubled); in order to improve the printing speed is general to ensure print quality by optimizing the forming direction, supporting manner, the shear layer optimization algorithm of the method, and these methods improve the printing speed and the print quality is very limited, especially for large parts of the print;

2.打印机的导丝机构主要是通过步进电机带动滚轮副,利用摩擦力将塑料丝材送至喷头挤出机构,其缺点是滚轮和丝材之间的摩擦力有限,容易出现滑丝失步,导致打印失败。 2. The guidewire printer mechanism is driven by a stepping motor main sub-roller, frictional force to the wire plastic extrusion nozzle means, the drawback is the limited frictional force between the rollers and the wire, the wire spool prone to failure step, resulting in printing failure.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种用于大型3D打印机的挤出喷头装置,以克服上述已有技术所存在的不足。 [0004] The object of the present invention is to provide an extrusion head device for large 3D printer, in order to overcome the disadvantages of the aforementioned prior art exists.

[0005] 本发明解决上述问题所采用的技术方案是:一种大型3D打印机的挤出喷头装置,包括支座以及安装在支座上的加热挤出机构和导丝机构,所述导丝机构由结构相同的左导丝机构和右导丝机构组成,包括导丝尖轮、步进电机、固定螺杆和顶栓,所述导丝尖轮安装在机盒的一侧、并与安装在机盒内的步进电机传动连接,所述固定螺杆水平安装并与导丝尖轮相对,所述顶栓安装在固定螺杆近导丝尖轮的一端、并在固定螺杆的推动下向导丝尖轮一侧顶压; [0005] aspect of the present invention is employed to solve the above problem is: A large 3D printer head extrusion apparatus comprises a support and heating the support mounted on the guide wire means and the extrusion means, the guide wire means the same configuration as the left and right guide mechanism composed of the guide wire means comprising the guide wire tip wheels, a stepping motor, and the screw ram fixed, the guide wire tip wheel mounted on one side of the cage, and is mounted on the machine stepper motor drive box connected to a fixed horizontal mounting screw and the tip of the guide wire relative to the wheel, the top of the screw bolt is mounted fixed at one end near the tip of the guide wire wheel, and guide wire tip wheel driven by a fixed screw a top side of the press;

所述加热挤出机构由结构相同的左加热挤出机构和右加热挤出机构组成,包括喷嘴、加热棒、散热器和导丝套,所述加热挤出机构安装在所述导丝机构的下部,垂直设置的导丝套的中轴线与导丝机构的送料方向对应一致;所述左加热挤出机构的喷嘴与右加热挤出机构的喷嘴口径大小不同,其中一个为用于打印模型的小喷嘴,其口径为0.05〜0.2mm,另一个为用于打印支撑材料的大喷嘴,其口径为0.8〜1.2mm。 The heating means of the same extruder configuration left and right heating means heating the extruded extrusion means, including a nozzle, the heating rod, the heat sink sleeve and guide wire, said heating means mounted on the extrusion means of the guide wire a lower, vertically disposed guide wire sleeve axis corresponds to the direction of the guide wire feed mechanism consistent; heating different nozzles of the left and the right nozzle aperture size of the heating means extruded extrusion mechanism, which is a print model for small nozzle diameter of 0.05~0.2mm, another big nozzle support material for printing, which is a diameter of 0.8~1.2mm.

[0006] 其进一步的技术方案是:所述导丝尖轮用金属材料制成,其圆周上均布有尖齿。 [0006] further technical solution: the guidewire tip wheel made of metallic material, which are evenly distributed over the circumference tines.

[0007] 由于采用上述技术方案,本发明之一种大型3D打印机的挤出喷头装置具有如下有益效果: [0007] Since the above technical solution, the present invention is one kind of large 3D printer extrusion nozzle device has the following advantages:

1.本发明之一种大型3D打印机的挤出喷头装置,其左右加热挤出机构配备了 口径不同的大小喷嘴,可在加快3D打印速度的同时提高打印质量:小口径喷嘴(Φ! = Hwm或更小)主要负责打印模型每层外轮廓线,喷嘴直径为现3D打印喷嘴直径的1/4 (现有打印机打印喷嘴直径Φ 二fWww),其打印表面质量理论上可达到现打印质量4倍以上,从而明显提升打印精度;大口径喷嘴(*¾ = 或更大)负责对模型内部填充的打印,在填充体积相同的情况下,与传统3D打印机相比(传统3D打印机打印喷嘴直径Φ 二UArnnO,打印所用时间成倍下降,从而大大提高了成形效率; 1. The large 3D printer of an inventive extrusion nozzle means, around which the heating means is equipped with different extrusion aperture size nozzles can improve the printing quality while the printing speed accelerating 3D: small diameter nozzles (Φ = Hwm! or less) is mainly responsible for the outer contour line of each print model, 3D printing, a nozzle diameter of the nozzle is now 1/4 of the diameter (nozzle diameter Φ conventional printer two fWww), which printing surface is now theoretically attainable quality print quality 4 or more times, thereby significantly improve printing accuracy; large diameter nozzles (* ¾ = or more) responsible for filling the internal model print, in case the same fill volume, compared with the conventional 3D printer (conventional 3D printer nozzle diameter Φ two UArnnO, printing drops exponentially with time, thereby greatly improving the efficiency of molding;

2.利用大口径喷嘴打印支撑材料(内部填充)相比小口径所需走丝次数会成倍下降,使得每层中材料之间的间隙明显下降,从而明显提高模型结构稳定性和硬度; 2. The use of large-diameter nozzle print support material (filled inside) of the desired filament diameter smaller than the walking frequency will decrease exponentially, such that the gap between each layer of material decreased, thereby significantly improving the structural stability and stiffness models;

3.本发明之一种大型3D打印机的挤出喷头装置,其导丝机构圆周上均布有尖齿,通过导丝尖轮和固定螺栓推动顶栓的顶压,可牢靠的咬紧丝材,送丝精度和可靠性高、不会出现滑丝,确保能控制丝材均匀进入加热挤出机构配合喷头打印; 3. The present invention one kind of large 3D printer extrusion nozzle means are evenly distributed on the circumference of the guide wire means which tines, pushing a top plug and through the guide wire tip wheel pressed against the fixing bolts can be firmly clench the wire , high accuracy and reliability of wire feed, will not slide wire, the control wire to ensure a uniform extrusion into the heating means with the print head;

4.本发明之一种大型3D打印机的挤出喷头装置设计科学,结构简单,制造成本低。 4. The present invention one kind of large 3D printer extrusion nozzle device designed SCIENCES, simple structure, low manufacturing cost.

[0008] 下面结合附图及实施例对本发明之一种大型3D打印机的挤出喷头装置的技术特征作进一步的说明。 [0008] The following drawings and embodiments to one embodiment of the present invention wherein large 3D extrusion nozzle device is further illustrated in conjunction with the printer.

附图说明 BRIEF DESCRIPTION

[0009] 图1为本发明之一种大型3D打印机的挤出喷头装置结构示意图; A large, 3D [0009] FIG printer 1 of the present invention means a schematic structural diagram of an extrusion head;

图2为左导丝机构结构示意图。 FIG 2 is a schematic structure of the left guide wire means.

[0010] 图中: [0010] FIG:

I一支座,2—左加热挤出机构,21—喷嘴,22—加热棒,23—散热器,24—导丝套;3—左导丝机构,31 一机盒,32一步进电机,33一导丝尖轮,34一顶检,35一固定螺杆;4一右导丝机构,41一机盒,42—步进电机,43—导丝尖轮,44一顶栓,45—固定螺杆;5—右加热挤出机构,51—喷嘴,52—加热棒,53—散热器,54—导丝套,6—丝材。 Block I a, 2 left out heating means, the nozzle 21, heating rods 22-, 23- radiator, 24 guidewire sleeve; 3- left guide mechanism, a top box 31, stepping motor 32 , a guide wire tip wheels 33, 34 a specimen, 35 a fixing screw; 4 a right guide wire means, a dryer cartridge 41, 42- stepper motor, the guide wire tip wheel 43, a bolt 44, 45- fixing screw; 5- extruding the right heating means, the nozzle 51, heating rods 52-, 53- radiator, 54- guidewire sleeve, 6- wire.

具体实施方式 detailed description

[0011] 如图1,一种大型3D打印机的挤出喷头装置,包括支座I以及安装在支座上的加热挤出机构和导丝机构,所述导丝机构由结构相同的左导丝机构3和右导丝机构4组成,所述左导丝机构3包括导丝尖轮33、步进电机32、固定螺杆35和顶栓34,所述导丝尖轮安装在机盒31的一侧、并与安装在机盒内的步进电机32的转轴传动连接;所述固定螺杆35水平安装并与导丝尖轮33相对、即固定螺杆的中轴线与导丝尖轮的直径位于相同的水平线,所述顶栓34安装在固定螺杆近导丝尖轮的一端,调节固定螺杆时顶栓在固定螺杆的推动下向导丝尖轮一侧顶压。 [0011] FIG. 1, nozzle means for extruding large 3D printer I comprises a support mounted on a carriage, and a heating means and extruding the guide mechanism, the guide wire means by the structure of the same left guidewire means 3 and the right guide mechanism 4 composed of the left guide mechanism 3 comprises a wheel guide wire tip 33, the stepping motor 32, the set screw 35 and ram 34, the guide wire tip wheel is mounted on a unit case 31 side, and connected to the machine drive shaft mounted in the box stepping motor 32; the fixing screw 35 is mounted horizontally and the tip of the guide wire 33 relative to the wheel, i.e. the diameter of the screw axis fixed guidewire tip wheel is positioned at the same horizontal line, when the ram 34 near an end of a screw mounted in a fixed guide-wire tip wheel, adjusting the set screw in the top side of the pin guide wire tip pressed against the driven wheel fixing screw.

[0012] 所述右导丝机构4包括导丝尖轮43、步进电机42、固定螺杆45和顶栓44,所述导丝尖轮安装在机盒41的一侧、并与安装在机盒内的步进电机42的转轴传动连接,所述固定螺杆45水平安装并与导丝尖轮43相对,即固定螺杆45的中轴线与导丝尖轮43的直径位于相同的水平线,所述顶栓44安装在固定螺杆近导丝尖轮的一端,调节固定螺杆时顶栓固定螺杆的推动下向导丝尖轮一侧顶压。 [0012] The right guide wire means comprises a guide wire tip 4 wheel 43, the stepping motor 42, the set screw 45 and ram 44, the guide wire tip wheel is mounted on one side of the cage 41, and installed in the machine the drive shaft cartridge 42 is connected to the stepping motor, the fixing screw 45 is mounted horizontally and the tip of the guide wire 43 relative to the wheel, i.e. the diameter of the guide wire tip wheel axis 43 of the screw 45 is fixed in the same horizontal line, the ram 44 is mounted fixed at one end of the screw near the tip of the guide wire wheel, wheel ram guide wire tip pressed against the driven side fixed adjustment screw fixing screw. [0013] 所述加热挤出机构安装在所述导丝机构的下部,所述加热挤出机构由结构相同的左加热挤出机构2和右加热挤出机构5组成,左加热挤出机构包括喷嘴21、加热棒22、散热器23和导丝套24,加热棒22和散热器23整体安装在喷头壳内,喷嘴安装在喷头壳下部,导丝套24安装在喷头壳上部、并与其上部的导丝机构3的送料方向对应,所述喷嘴21为用于打印模型的小喷嘴,其口径为0.05〜0.2mm。 [0013] The extruder heating means is mounted at a lower portion of the guide wire means, said heating means heating the extruded from the same extruder configuration mechanism 2 left and the right heating means 5 composed of extruded, extrusion left heating means comprises nozzle 21, heating rods 22, the heat sink sleeve 23 and guide wire 24, heater bar 22 and the radiator 23 is mounted integrally on the nozzle housing, the nozzle head mounted on the lower shell, the guidewire 24 is mounted in an upper sleeve head housing, and its upper portion corresponding to the guide wire feed mechanism 3 in the direction, the nozzle 21 is a nozzle for small print model, the diameter of 0.05~0.2mm.

[0014] 所述右加热挤出机构5包括喷嘴51、加热棒52、散热器53和导丝套54,加热棒52和散热器53整体安装在喷头壳内,喷嘴安装在喷头壳下部,导丝套54安装在喷头壳上部、并与其上部的导丝机构4的送料方向对应;所述喷嘴51为用于打印支撑材料的大喷嘴,其口径为0.8 〜1.2mm。 [0014] The right-extrusion heating means 5 includes a nozzle 51, heating rods 52, the heat sink sleeve 53 and guide wire 54, the radiator 53 and heater bar 52 integrally mounted on the spray head housing, a nozzle head mounted on the lower shell guide wire sleeve 54 mounted in the upper nozzle casing, and its upper portion corresponding to a guide wire means 4 feed direction; large print nozzles 51 of the nozzle support material for which a diameter of 0.8 ~1.2mm.

[0015] 所述导丝尖轮33和43用金属材料制成,其圆周上均布有尖齿。 [0015] the guide wire tip 43 and ring 33 made of metallic material, which are evenly distributed over the circumference tines.

[0016] 工作过程 [0016] Working Process

根据不同的丝材调整连接在固定螺杆一端的与导丝尖轮之间的间隙,将丝材穿过导丝尖轮与顶栓之间的间隙并伸进导丝套,控制导丝尖轮与顶栓对丝材的压力值,使导丝尖轮咬紧丝材,步进电机在计算机的控制下带动导丝尖轮将丝料平稳送入加热挤出机构。 Depending on the adjustment of the gap between the guide wire tip wire connected to the fixed wheel and the one end of the screw, the wire passes through the gap between the wheel and the guide wire tip extending into the guide wire ram and sleeve, the guide wire tip control wheel the ram pressure of the wire, the guide wire tip wheel clenched wire, the guide wire tip stepper motor driven wheel under the control of the computer will smooth silk material extruded into the heating means.

[0017] 左、右加热挤出机构的喷嘴口径不同,通过计算机控制不同的挤出压力,分使两个不同喷头分别完成模型轮廓和内部填充的打印:小口径喷嘴完成轮廓的打印,大口径喷嘴完成支撑材料(内部填充)的打印。 [0017] The left and right different nozzle diameter extruder heating means, controlled by a computer different extrusion pressure, the two points are different head model profile and the internal filling is completed print: print small diameter nozzles complete profile, large-diameter completion of the printing nozzle support material (inner fill) of.

Claims (2)

1.一种大型3D打印机的挤出喷头装置,包括支座(I)以及安装在支座上的加热挤出机构和导丝机构,其特征在于:所述导丝机构由结构相同的左导丝机构(3)和右导丝机构(4)组成,包括导丝尖轮、步进电机、固定螺杆和顶栓,所述导丝尖轮安装在机盒的一侧、并与安装在机盒内的步进电机传动连接,所述固定螺杆水平安装并与导丝尖轮相对,所述顶栓安装在固定螺杆近导丝尖轮的一端、并在固定螺杆的推动下向导丝尖轮一侧顶压; 所述加热挤出机构由结构相同的左加热挤出机构(2)和右加热挤出机构(5)组成,包括喷嘴、加热棒、散热器和导丝套,所述加热挤出机构安装在所述导丝机构的下部,垂直设置的导丝套的中轴线与导丝机构的送料方向对应一致;所述左加热挤出机构的喷嘴与右加热挤出机构的喷嘴口径大小不同,其中一个为用于打印模型的小喷嘴, A large 3D printer head extrusion apparatus comprises a support (I) and heating the extruded mounted on a carriage mechanism and the guide mechanism, characterized in that: said guide wire means by the structure of the same left guide wire means (3) and the right guide mechanism (4), including guide wire tip wheels, a stepping motor, and the screw ram fixed, the guide wire tip wheel mounted on one side of the cage, and is mounted on the machine stepper motor drive box connected to a fixed horizontal mounting screw and the tip of the guide wire relative to the wheel, the top of the screw bolt is mounted fixed at one end near the tip of the guide wire wheel, and guide wire tip wheel driven by a fixed screw pressing a top side; the extruder heating means (2) and the right extrusion heating means (5) is heated by the extruding mechanism left the same structure, including the nozzle, heating rod, sleeve and guide wire radiator, the heating feed direction of the axis of the guide mechanism mounted on the lower extrusion mechanism the guidewire means, the guidewire sleeve disposed vertically corresponding to the same; nozzle diameter of the nozzle of the left and the right heating the heating means extruded extrusion mechanism of different sizes, wherein small nozzles for printing a model, 口径为0.05〜0.2mm,另一个为用于打印支撑材料的大喷嘴,其口径为0.8〜1.2mm。 Caliber 0.05~0.2mm, another print large support material for the nozzle, which diameter of 0.8~1.2mm.
2.根据权利要求1所述的一种大型3D打印机的挤出喷头装置,其特征在于:所述导丝尖轮用金属材料制成,其圆周上均布有尖齿。 2. The large scale 3D printer according to claim 1 an extrusion head device, wherein: the guide wire tip wheel made of metallic material, which are evenly distributed over the circumference tines.
CN 201410157435 2014-04-18 2014-04-18 A large, 3d printer head extrusion apparatus CN103878984B (en)

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CN104441661A (en) * 2014-11-28 2015-03-25 柳州科瑞科技有限公司 Wire-guiding spray head device of 3D printer without forced heat dissipation system
CN104589649A (en) * 2015-01-09 2015-05-06 珠海天威飞马打印耗材有限公司 Printing head, three-dimensional printer and three-dimensional printing method
CN104129167B (en) * 2014-08-07 2016-09-28 北京汇天威科技有限公司 3d multicolor printer print heads device

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CN104129167B (en) * 2014-08-07 2016-09-28 北京汇天威科技有限公司 3d multicolor printer print heads device
CN104441661A (en) * 2014-11-28 2015-03-25 柳州科瑞科技有限公司 Wire-guiding spray head device of 3D printer without forced heat dissipation system
CN104441661B (en) * 2014-11-28 2016-08-24 柳州科瑞科技有限公司 3d without forced cooling system of the printer head means guidewire
CN104589649A (en) * 2015-01-09 2015-05-06 珠海天威飞马打印耗材有限公司 Printing head, three-dimensional printer and three-dimensional printing method

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