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    Laser Printing System
    3.
    发明申请
    Laser Printing System 审中-公开

    公开(公告)号：US20200307075A1

    公开(公告)日：2020-10-01

    申请号：US16902675

    申请日：2020-06-16

    申请人： EOS GmbH Electro Optical Systems

    发明人： Thomas Mattes ,  Stefan Paternoster ,  Gerd Cantzler ,  Jochen Philippi ,  Stephan Gronenborn ,  Gero Heusler ,  Holger Moench ,  Ralf Conrads

    IPC分类号： B29C64/153 ,  B33Y40/00 ,  B29C64/277 ,  B41J2/45 ,  B29C64/268 ,  B29C64/282 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/064 ,  B23K26/342 ,  B22F3/105 ,  B23K26/08 ,  B41J2/455 ,  H01S5/00 ,  H01S5/42

    摘要： The invention describes a laser printing system (100) for illuminating an object moving relative to a laser module of the laser printing system (100) in a working plane (180), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules (201, 202) are provided, which are arranged in columns (c1, c2) perpendicular to a direction of movement (250) of the object in the working plane (180), and wherein the columns are staggered with respect to each other such that a first laser module (201) of a first column of laser modules (c1) is adapted to illuminate a first area (y1) of the object and a second laser module (202) of a second column (c2) of laser modules is adapted to illuminate a second area (y2) of the object, wherein the first area (y1) is adjacent to the second area (y2) such that continuous illumination of the object is enabled.

    Recoating unit, recoating method, device and method for additive manufacturing of a three-dimensional object
    4.
    发明授权
    Recoating unit, recoating method, device and method for additive manufacturing of a three-dimensional object 有权

    公开(公告)号：US10780636B2

    公开(公告)日：2020-09-22

    申请号：US15630054

    申请日：2017-06-22

    申请人： EOS GmbH Electro Optical Systems

    发明人： Stefan Paternoster ,  Stefan Grünberger

    IPC分类号： B29C64/00 ,  B22F3/00 ,  B28B1/00 ,  B29C64/218 ,  B29C64/214 ,  B29C64/153 ,  B29C64/241 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/105

    摘要： A recoating unit (40) serves for equipping or retrofitting a device (1) for additive manufacturing of a three-dimensional object (2) by selectively solidifying a building material (15), preferably a powder, layer by layer. The device (1) comprises a recoater (16) movable across a build area (8) for applying a layer (31b, 32b) of the building material (15) within the build area (8) and a solidification device (20) for selectively solidifying the applied layer (31b, 32b) at positions corresponding to a cross-section of the object (2) to be manufactured. The device (1) is formed and/or controlled to repeat the steps of applying and selectively solidifying until the object (2) is completed. The recoating unit (40) comprises at least two recoating rollers (41, 42) spaced apart from each other in a first direction (B1) and extending into a second direction transversely, preferably perpendicularly, to the first direction, and a compacting and/or smoothing element (45) arranged between the two recoating rollers (41, 42) in the first direction (B1) and extending into the second direction. The recoating unit (40) is adapted to draw-out building material to a regular layer (31a, 32a), depending on the movement of the recoating unit into the first direction (B1) or into its reverse direction (B2), using the recoating roller (41, 42) arranged ahead in the respective moving direction (B1, B2), and to compact or smoothen the layer (31a, 32a) drawn-out by the recoating roller (41, 42) arranged ahead using the compacting and/or smoothing element (45).

    METHOD AND DEVICE FOR PRODUCING A THREE-DIMENSIONAL OBJECT
    5.
    发明申请
    METHOD AND DEVICE FOR PRODUCING A THREE-DIMENSIONAL OBJECT 审中-公开

    公开(公告)号：US20200079009A1

    公开(公告)日：2020-03-12

    申请号：US15743167

    申请日：2016-07-14

    申请人： EOS GmbH Electro Optical Systems

    发明人： Stefan Paternoster ,  Stefan Grünberger

    IPC分类号： B29C64/153 ,  B33Y30/00

    摘要： A method for producing a three-dimensional object by layer-wise applying and selectively solidifying a building material in powder form includes the steps of applying a layer of the building material over a working plane and selectively solidifying the layer at positions that correspond to a cross-section of the object to be produced by introducing energy and repeating the steps of applying and selectively solidifying until the object is completed. By doing so, the application step is carried out such that the application device moves at least twice over an area to be coated without an intermediate irradiation, and the step of selectively solidifying is carried out with an irradiation device that emits a radiation suited to solidify the building material.

    Device and Method for Producing a Three-Dimensional Object
    6.
    发明申请
    Device and Method for Producing a Three-Dimensional Object 审中-公开

    公开(公告)号：US20180304527A1

    公开(公告)日：2018-10-25

    申请号：US15767891

    申请日：2016-09-28

    申请人： EOS GmbH Electro Optical Systems

    发明人： Stefan Paternoster ,  Stefan Grünberger ,  Stefan Kneisel

    IPC分类号： B29C64/153 ,  B29C64/165 ,  B29C64/20

    CPC分类号： B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

    摘要： A device includes a recoater that can be moved in an application direction across a build area, the recoater having at least a first recoating unit for applying a layer of the building material to the build area and a solidification device that can be moved in the application direction across the build area, the solidification device having at least a first solidification unit for selectively solidifying the applied layer of the building material at positions that correspond to a cross-section of the object to be produced. The device can repeat the steps of applying and selectively solidifying until the object is completed. The recoater includes at least a second recoating unit that is arranged at the other side of the first solidification unit than the first recoating unit with respect to the application direction.

    PA 12 Powder for Use in a Generative Layer-Wise Manufacturing Method
    7.
    发明申请
    PA 12 Powder for Use in a Generative Layer-Wise Manufacturing Method 审中-公开
    PA 12粉末用于生成层智慧制造方法

    公开(公告)号：US20140329953A1

    公开(公告)日：2014-11-06

    申请号：US14334169

    申请日：2014-07-17

    申请人： EOS GmbH Electro Optical Systems

    发明人： Stefan Paternoster

    IPC分类号： C08L77/06 ,  B29C67/00

    CPC分类号： C08L77/06 ,  B29C64/153 ,  B29K2077/00 ,  B33Y70/00 ,  C08L77/02 ,  C08L2205/02 ,  C08L2666/20

    摘要： A powder mixture is described, which is suitable for a layer-wise manufacturing of a three-dimensional object by solidifying a building material in powder form. The powder mixture consists of a mixture of a first polyamide 12 powder and a second polyamide 12 powder, wherein the first polyamide 12 powder is characterized by an increase of its viscosity number determined in accordance with ISO 307 that is less than 10%, when the powder is exposed for 20 hours to a temperature that lies 10° C. below its melting temperature under nitrogen atmosphere, and the second polyamide 12 powder is characterized by an increase of its viscosity number, determined in accordance with ISO 307, by 15% or more, when the powder is exposed for 20 hours to a temperature that lies 10° C. below its melting temperature under nitrogen atmosphere. In particular, the proportion of the first polyamide 12 powder in the mixture must lie between 10 and 30 percent by weight for obtaining manufactured objects that do not only have good mechanical properties, but also do show a small warpage and a high surface quality.

    摘要翻译： 描述了一种粉末混合物，其适用于通过固化粉末形式的建筑材料来进行三维物体的分层制造。 粉末混合物由第一聚酰胺12粉末和第二聚酰胺12粉末的混合物组成，其中第一聚酰胺12粉末的特征在于根据ISO 307确定的粘度数值小于10％ 粉末在氮气气氛下暴露于低于其熔融温度10℃的温度，第二聚酰胺12粉末的特征在于其粘度数值根据ISO 307确定增加15％，或 更多的是，当粉末在氮气氛下暴露20小时至低于其熔融温度10℃的温度时。 具体而言，混合物中的第一聚酰胺12粉末的比例必须在10-30重量％之间，以获得不仅具有良好机械性能的制造物品，而且还显示出小的翘曲和高的表面质量。