CN110392629A - 用于增材制造的连续的丝材进给 - Google Patents
用于增材制造的连续的丝材进给 Download PDFInfo
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Abstract
一种连续3D打印系统,包括:装载有打印材料的装载站;检测站;其中所述检测站构造成检测由所述装载站装载的第一打印材料的末端;结合站,其构造成在接收到来自所述检测站的信号时将所述第一打印材料连接到由所述装载站装载的第二打印材料;打印头,其构造成打印3D模型;进给机构,其构造成将打印材料进给到所述打印头内;以及基板,所述3D打印模型打印到该基板上。
Description
技术领域
本发明总体涉及打印系统,以及具体涉及能够进行连续打印材料进给的3D打印系统。
相关专利申请的交叉引用
本专利申请要求于2017年5月3日提交的、序列号为62/467,153的美国临时专利申请的优先权,该美国临时专利申请通过引用以其整体并入本文。
背景技术
3D打印或增材制造(AM,Additive Manufacturing)、熔融沉积成型(FDM,FuseDepositing Modeling)和熔丝制造(FFT,Fused Filament Fabrication)是指用于打印三维物体的各种工艺中的任何一种工艺。主要是利用增材工艺,其中在计算机控制下铺设连续的材料层。这些物体可以是几乎任何形状或几何构造,并且可以从3D模型或其他电子数据源制成。多年来开发了不同类型的3D打印机,诸如3D FDM(熔融沉积成型)挤出打印机。3DFDM挤出打印机主要基于在打印机头中熔化丝材,例如塑料或金属丝材。
FDM/FFF打印工艺需要连续打印材料进给。
在使用诸如玻璃、金属、塑料、陶瓷等打印材料进行打印的情况下,如果打印材料流不连续,则在打印时打印出的部件中可能出现裂缝和气隙。这种气隙防止打印出的部件对液体的密封到并降低其强度。
此外,在打印时,打印头通常必须在点“A”处停止打印并继续在点“B”处打印。为了使打印头能够从点“A”移动到“B”,打印系统缩回打印材料以避免渗出(打印材料泄漏)。如果打印材料不连续,则有时不能进行这种缩回,因为打印材料可能不再通过打印材料的进给机构。
有时,需要在多种打印材料之间切换,例如,不同的玻璃颜色、不同的玻璃材料、不同的金属材料,或者甚至在打印相同部件时从玻璃切换到金属。
附图说明
为了更好地理解本发明并示出如何实现本发明,现在将纯粹通过示例的方式参考附图。
现在具体参考附图,要强调的是,所示的细节仅是示例性的,并且仅出于对本发明优选实施例的说明性论述的目的,并且为了提供据信是对本发明的原理和概念方面的最有用和易于理解的描述而呈现。在这方面,未试图以比对本发明的基本理解所必要的内容更详细地显示本发明的结构细节,通过附图进行的描述使得本领域技术人员明了如何可在实践中体现本发明的几种形式。在附图中:
图1是根据本发明实施例的连续3D打印系统的示意性前视图;
图2是图1的细节A的放大图,示出通过粘接站粘接的杆;
图3是根据本发明实施例的图1系统的侧面透视图;
图3A是图1的3D打印系统的示例性实施例的侧面透视图,包括根据本发明实施例的弧焊站;
图4是替代料盒的示意图;
图5示出替代装载站的示意图;以及
图6是图5的细节B的放大图,示出挡板机构和挡板门。
具体实施方式
在详细解释本发明的至少一个实施例之前,应理解的是,本发明在其应用方面不限于在下面的描述中阐述的或在附图中示出的构造的细节和部件的布置。本发明适用于其他实施例或以各种方式实践或实施。此外,应理解的是,本文采用的措辞和术语是出于描述的目的,并且不应被视为是限制性的。
本发明提供一种系统,其用于连续3D打印玻璃、金属、塑料、陶瓷或现有技术中已知的任何其它打印材料。在整个说明书中,这些材料可被称为打印材料。
在使用诸如玻璃、金属等打印材料进行打印的情况下,如果打印材料流不连续,则在打印时打印部件中可能出现裂缝和气隙。这种气隙将防止打印部件对液体的密封并降低其强度。
此外,在打印时,打印头通常必须在点“A”处停止打印并在点“B”处继续打印。为了使打印头能够从点“A”移动到“B”,打印系统的进给机构缩回打印材料以避免渗出(打印材料泄漏)。如果打印材料不连续,例如杆,则有时因为打印材料可能已经经过进给机构,而不能进行这种缩回。
图1是根据本发明实施例的连续3D打印系统100的示意性前视图,其包括:用于装载打印材料的装载站110,用于检测打印材料的存在/末端的检测站120,用于将一种打印材料连接到另一种打印材料的结合站130,用于打印3D模型的打印头(喷嘴)140,用于将打印材料进给到打印头140内的进给机构150,以及打印模型打印在其上的基板/板160。
打印材料可以提供为杆、卷(spool)或本领域已知的任何其他形式。
出于说明的目的,打印材料呈现为杆。
应理解的是,系统100不限于接收杆。
检测站120可以包括光学传感器、电容感测、机械开关等,用于检测打印材料的存在/末端并将相应的指示转发到装载站110。
根据本发明的实施例,该系统还可包括固定料盒111,打印材料杆112装载到该固定料盒111。备选地,如图4所示,料盒111可以用新装载的料盒整体替换。
料盒可装载有相同材料的杆、不同材料的杆或具有不同颜色的相同材料的杆。
装载站110包括旋转机构(图4中的410),诸如DC伺服马达、气动致动器、步进马达等,用于使得料盒旋转,而无论其是否固定,以根据需要将下一个杆与通向检测站(未示出)的通道对准。
当旋转料盒111旋转时,杆在平坦表面(图4中的430)上滑动,该平坦表面具有由挡板门(图4中的420)覆盖的孔。
装载站110还包括挡板机构113,挡板机构113包括致动器,诸如步进马达、DC伺服马达、气动致动器、螺线管等,其用于响应于由检测站120产生的信号打开挡板门(图4中的420),即打开在杆的料盒和检测站120之间的通道。
根据本发明的实施例,取代挡板和挡板门,系统可以包括在每个杆的底部下方的挡板和致动器,该致动器用于响应于由检测站120产生的信号而打开所需杆的挡板。
当杆170朝向打印头140前进时,检测站120检测杆的端部并且向挡板机构113(或用于打开所需杆的挡板的致动器)发信号以允许下一个杆180朝向结合站130通过。杆170和180在穿过结合站130的同时一起前进并结合在一起,从而形成连续的打印材料(丝材)。根据本发明的实施例,进给机构150可以在杆170和180结合的同时暂停进给过程。
根据本发明的实施例,结合站130可以是弧焊站、气焊站、激光焊接站、感应焊接站或能够焊接打印材料的任何其他焊接系统。
根据本发明的实施例,结合站130可以在杆之间施加胶粘剂以连接它们。
根据本发明的实施例,杆可以在一端或两端中包括胶粘剂。
如上所述,打印材料可以提供为卷。在这种情况下,料盒可包括卷。
根据本发明的实施例,检测站可以检测安装在每个杆或卷的开始处的标记或代码,从而能够验证正在被进给的正确的材料和/或原厂的材料。如果进给了不正确或非原厂的材料,则检测站可以发送警报、停止打印等。
标记或代码可以是条形码、QR码或本领域已知的任何其他代码。
图2是图1的细节A的放大图,示出通过结合站130结合的杆170和180。
图3是根据本发明实施例的系统100的侧面透视图。
图3A是图1的3D打印系统的示例性实施例100A的侧面透视图,其包括根据本发明实施例的弧焊站。弧焊站130A包括围绕杆170和180的焊接表面安装的至少两个电极130B和130C。电源单元(未示出)向电极130B和130C提供电压和电流,以在焊接表面处在电极130B和130C之间产生电弧。
根据本发明的实施例,可编程控制电路在预定时间段内改变所施加的功率。
根据本发明的实施例,杆170和180可以使用对准部件(例如,191和192)对准。
根据本发明的实施例,代替圆形料盒111,装载站可包括在X平面、Y平面或XY平面上移动的线性料盒。
图5示出替代装载站500的示意图,其包括:用于沿双头箭头530的方向移动料盒511的移动机构510和与上述挡板机构113类似的挡板机构513。
图6是图5的细节B的放大图,示出挡板机构513和挡板门514。
根据本发明的实施例,打印系统100可以允许用不同颜色/不同材料进行打印。例如,当必须打印新颜色时,系统可以将新杆结合到前一个杆,将前一个杆放置在处理点(例如基板的角部)上并继续用新杆打印。备选地,装载站可以根据打印部件装载适当长度的每种颜色/材料。
将由本领域技术人员意识到的是,本发明不限于上文特别示出和描述的内容。相反,本发明的范围由所附权利要求限定,并且包括上文描述的各种特征的组合和子组合以及本领域技术人员在阅读前述描述时将想到的变化和修改。
Claims (37)
1.一种连续3D打印系统,包括:
装载有打印材料的装载站;
检测站;
其中所述检测站构造成检测由所述装载站装载的第一打印材料的末端;
结合站,其构造成在接收到来自所述检测站的信号时将所述第一打印材料连接到由所述装载站装载的第二打印材料;
打印头,其构造成打印3D模型;
进给机构,其构造成将打印材料进给到所述打印头内;以及
基板,所述3D打印模型打印到该基板上。
2.根据权利要求1所述的3D打印系统,其特征在于,所述打印材料形成为杆和卷中的一种。
3.根据权利要求1所述的3D打印系统,其特征在于,所述打印材料是玻璃、塑料、陶瓷和金属中的一种。
4.根据权利要求1所述的3D打印系统,其特征在于,所述装载站包括料盒,所述打印材料装载到该料盒。
5.根据权利要求4所述的3D打印系统,其特征在于,所述料盒包括固定料盒和可更换料盒中的一种。
6.根据权利要求4所述的3D打印系统,其特征在于,所述料盒装载有相同的打印材料、不同的打印材料和具有不同颜色的相同打印材料中的一种。
7.根据权利要求4所述的3D打印系统,其特征在于,所述装载站还包括旋转机构,所述旋转机构构造成使得所述料盒旋转。
8.根据权利要求7所述的3D打印系统,其特征在于,所述旋转机构包括DC伺服马达、步进马达和气动致动器中的一种。
9.根据权利要求4所述的3D打印系统,其特征在于,所述装载站还包括挡板机构和挡板门;其中所述挡板机构构造成在接收到来自所述检测站的信号时打开所述挡板门。
10.根据权利要求9所述的3D打印系统,其特征在于,所述挡板机构包括步进马达、DC伺服马达、气动致动器和螺线管中的一种。
11.根据权利要求1所述的3D打印系统,其特征在于,所述检测站包括光学传感器、电容传感器和机械开关中的一种。
12.根据权利要求1所述的3D打印系统,其特征在于,所述结合站包括弧焊站、气焊站、激光焊接站、感应焊接站和胶粘剂结合站中的一种。
13.根据权利要求1所述的3D打印系统,其特征在于,所述结合站包括弧焊站,所述弧焊站包括围绕所述打印材料的焊接表面安装的多个电极;3D打印系统还包括电源单元,该电源单元构造成向所述多个电极提供电压和电流,以在焊接表面处在所述电极之间产生电弧。
14.根据权利要求4所述的3D打印系统,其特征在于,所述装载站还包括移动机构,所述移动机构构造成使得所述料盒线性移动。
15.根据权利要求1所述的3D打印系统,其特征在于,所述第一打印材料和第二打印材料包括代码和标记之一;并且其中所述检测站构造成验证所述第一打印材料和第二打印材料是否是正确的打印材料和原厂的打印材料中的至少一种。
16.根据权利要求1所述的3D打印系统,其特征在于,所述打印材料在打印材料的至少一个末端上包括胶粘剂。
17.根据权利要求1所述的3D打印系统,其特征在于,还包括两个对准部件,该两个对准部件构造成使所述第一打印材料与所述第二打印材料对准。
18.一种连续3D打印方法,包括:
在打印时,由检测站检测第一打印材料的末端;
由所述检测站向装载站发送信号,从而使得第二打印材料能够朝向所述第一打印材料前进;
由所述检测站向结合站发送信号,由此将所述第一打印材料连接到所述第二打印材料。
19.根据权利要求18所述的方法,其特征在于,所述第一打印材料形成为杆和卷中的一种。
20.根据权利要求18所述的方法,其特征在于,所述第二打印材料形成为杆和卷中的一种。
21.根据权利要求18所述的方法,其特征在于,所述第一打印材料是玻璃、塑料、陶瓷和金属中的一种。
22.根据权利要求18所述的方法,其特征在于,所述第二打印材料是玻璃和金属中的一种。
23.根据权利要求18所述的方法,其特征在于,所述装载站还包括料盒,所述第一打印材料和第二打印材料装载到该料盒。
24.根据权利要求23所述的方法,其特征在于,所述料盒包括固定料盒和可更换料盒中的一种。
25.根据权利要求23所述的方法,其特征在于,所述料盒装载有相同的打印材料、不同的打印材料和具有不同颜色的相同打印材料中的一种。
26.根据权利要求23所述的方法,其特征在于,所述装载站还包括旋转机构;并且其中所述方法还包括使得所述料盒旋转。
27.根据权利要求26所述的方法,其特征在于,所述旋转机构包括DC伺服马达、步进马达和气动致动器中的一种。
28.根据权利要求22所述的方法,其特征在于,所述装载站还包括挡板机构和挡板门;其中所述方法还包括在接收到来自所述检测站的信号时打开所述挡板门。
29.根据权利要求28所述的方法,其特征在于,所述挡板机构包括步进马达、DC伺服马达、气动致动器和螺线管中的一种。
30.根据权利要求18所述的方法,其特征在于,所述检测站包括光学传感器、电容传感器和机械开关中的一种。
31.根据权利要求18所述的方法,其特征在于,所述焊接站包括弧焊站、气焊站、感应焊接站、激光焊接站和胶粘剂结合站中的一种。
32.根据权利要求18所述的方法,其特征在于,所述结合站包括弧焊站,所述弧焊站包括围绕所述第一打印材料和第二打印材料的焊接表面安装的多个电极;所述方法还包括向所述多个电极提供电压和电流,以在焊接表面处在所述电极之间产生电弧。
33.根据权利要求23所述的方法,其特征在于,所述装载站还包括移动机构;并且其中所述方法还包括使得所述料盒线性移动。
34.根据权利要求18所述的方法,其特征在于,所述第一打印材料和第二打印材料包括代码和标记之一;并且其中所述方法还包括:
由所述检测站检测所述第一打印材料和第二打印材料是否是正确的打印材料和原厂的打印材料中的至少一种。
35.根据权利要求34所述的方法,其特征在于,在进行所述检测时,所述方法还包括:
发送警报和停止所述打印中的至少一种。
36.根据权利要求18所述的方法,其特征在于,所述打印材料在该打印材料的至少一末端上包括胶粘剂。
37.根据权利要求18所述的方法,其特征在于,还包括将所述第一打印材料与所述第二打印材料对准。
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