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    BOTTOM PLATE OF RESIN TANK FOR THREE-DIMENSIONAL PRINTING
    1.
    发明申请
    BOTTOM PLATE OF RESIN TANK FOR THREE-DIMENSIONAL PRINTING 有权

    公开(公告)号：US20230080633A1

    公开(公告)日：2023-03-16

    申请号：US17692154

    申请日：2022-03-10

    Applicant: National Taiwan University of Science and Technology

    Inventor： Jeng-Ywan Jeng ,  Ming-Hua Ho ,  Ping-Hsun Tsai

    IPC: B29C64/245 ,  B29C64/124 ,  B29C64/255 ,  B33Y30/00

    Abstract: The present invention provides a bottom plate of a resin tank for three-dimensional printing, which is manufactured through the following steps: substrate surface roughening step: treating the upper surface of a transparent substrate by using a plasma, or disposing a composite film on the upper surface of the transparent substrate to form a non-smooth surface structure having pores; substrate surface modification step: sequentially performing an activation treatment and a fluorination treatment on the upper surface of the transparent substrate; and stabilizer filling step: applying a stabilizer to the upper surface of the transparent substrate to fill the stabilizer penetrates into the pores on the upper surface of the transparent substrate. The low surface energy film reduces the adhesion of the hardened photosensitive material, and the stabilizer maintains the structure of the low surface energy film, so that the resin tank bottom plate has both oleophobic and hydrophobic properties.

    SHOE MIDSOLE WITH VARIABLE DIMENSION HELICAL SPRING MADE BY ADDITIVE MANUFACTURING PROCESS
    2.
    发明申请
    SHOE MIDSOLE WITH VARIABLE DIMENSION HELICAL SPRING MADE BY ADDITIVE MANUFACTURING PROCESS 有权

    公开(公告)号：US20220142297A1

    公开(公告)日：2022-05-12

    申请号：US17093573

    申请日：2020-11-09

    Applicant: National Taiwan University of Science and Technology

    Inventor： Aamer Nazir ,  Jeng-Ywan Jeng ,  Mubasher Ali

    IPC: A43B13/18

    Abstract: A shoe midsole having a structure formed by additive manufacturing process, including a bottom pad, an upper pad and a shock-absorbing layer. The bottom pad has foot-shaped profile and includes a plurality of stress zones. The upper pad is arranged opposite to the bottom pad and has foot-shaped profile almost identical to that of the bottom pad. The shock-absorbing layer is arranged between the bottom pad and the upper pad and includes a plurality of pressure-bearing units. The pressure-bearing unit is arranged between the bottom pad and the upper pad in the manner that two ends of each pressure-bearing unit abut against the bottom pad and the upper pad respectively. The pressure-bearing unit has excellent mechanical properties such as higher energy absorption and force bearing capacity for bearing pressures or stress put by the foot, good flexibility and higher deflection capacity that can be elastically deformed in the longitudinal direction.

    VENTILATED THREE DIMENSIONAL STRUCTURE FROM ADDITIVE MANUFACTURE FOR EASY POWDER REMOVAL DURING POST PROCESS
    3.
    发明申请
    VENTILATED THREE DIMENSIONAL STRUCTURE FROM ADDITIVE MANUFACTURE FOR EASY POWDER REMOVAL DURING POST PROCESS 有权

    公开(公告)号：US20220010927A1

    公开(公告)日：2022-01-13

    申请号：US16925330

    申请日：2020-07-09

    Applicant: National Taiwan University of Science and Technology

    Inventor： Saurav Verma ,  Jeng-Ywan Jeng ,  Ajeet Kumar

    IPC: F16S5/00 ,  B33Y80/00

    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.

    BIO-MIMICKED THREE-DIMENSIONAL LAMINATED STRUCTURE
    4.
    发明申请
    BIO-MIMICKED THREE-DIMENSIONAL LAMINATED STRUCTURE 有权

    公开(公告)号：US20210186152A1

    公开(公告)日：2021-06-24

    申请号：US17083279

    申请日：2020-10-28

    Applicant: National Taiwan University of Science and Technology

    Inventor： Ajeet Kumar ,  Jeng-Ywan Jeng ,  Yun-Peng Yeh

    IPC: A43B13/18 ,  A43B13/02 ,  A43B13/04 ,  B33Y80/00 ,  A43B13/20

    Abstract: A invention disclosed a bio-mimicked three-dimensional laminated structure at least comprising a flexible lattice structure, which is characterized in that the flexible lattice structure comprises a plurality of particle units are uniformly disposed and evenly distributed in the X-axis, the Y-axis, and the Z-axis direction and evenly distributed as a lattice matrix of an array grid in an identical plane; wherein each of the particle units is an opened hollow shell or a close shell. The design eliminates the need for support structures and the subsequent post-processing required to remove them. A shell-shaped close cell bio-mimicked three-dimensional laminated structure bio-mimicking a sea urchin shape was introduced for the load-bearing structure application.

    APPARATUS AND METHOD FOR CUTTING SEMI/NON-CONDUCTOR USING WEDM
    5.
    发明申请
    APPARATUS AND METHOD FOR CUTTING SEMI/NON-CONDUCTOR USING WEDM 审中-公开
    使用WEDM切割半导体/非导体的装置和方法

    公开(公告)号：US20160121415A1

    公开(公告)日：2016-05-05

    申请号：US14792786

    申请日：2015-07-07

    Applicant: National Taiwan University of Science and Technology

    Inventor： Chun-Liang Kuo ,  Jeng-Ywan Jeng

    IPC: B23H7/02 ,  B23H7/04 ,  B23H1/08

    CPC classification number: B23H7/02 ,  B23H7/04 ,  B23H11/00

    Abstract: A wire electrical discharge machining (WEDM) method is disclosed, the WEDM method comprising steps of: (a) providing one of a non-conductive and a weakly conductive object having a to-be-cut surface; (b) providing one of a wire and a cutting tool having a cutting blade edge to cut the object along the to-be-cut surface; (c) providing a conductive medium to adhere to the to-be-cut surface via the cutting blade edge; and (d) applying an electric current between the one of the wire and the cutting tool, and the to-be-cut surface adhered to the conductive medium such that the to-be-cut surface is melted.

    Abstract translation: 公开了一种线放电加工（WEDM）方法，所述WEDM方法包括以下步骤：（a）提供具有待切割表面的非导电和弱导电物体之一; （b）提供具有切割刀刃的线和切割工具中的一个，以沿被切割表面切割物体; （c）提供导电介质以经由切割刃边缘附着到待切割表面; 和（d）在所述线和所述切削工具中的一个之间施加电流，并且所述被切割表面粘附到所述导电介质，使得所述被切割表面被熔化。

    COMPOSITE ADDITIVE STRUCTURE AND COMPOSITE ADDITIVE MANUFACTURING EQUIPMENT
    6.
    发明申请
    COMPOSITE ADDITIVE STRUCTURE AND COMPOSITE ADDITIVE MANUFACTURING EQUIPMENT 有权

    公开(公告)号：US20230117377A1

    公开(公告)日：2023-04-20

    申请号：US17505608

    申请日：2021-10-19

    Applicant: National Taiwan University of Science and Technology

    Inventor： Jeng-Ywan Jeng ,  Mayur Jiyalal Prajapati ,  Ajeet Kumar

    IPC: B29C64/245 ,  B29C64/209 ,  B29C64/336 ,  B29C64/295 ,  B33Y30/00 ,  B33Y70/10

    Abstract: A composite additive structure comprising a three-dimensional base structure and a filled structure is provided. The three-dimensional base structure comprises a shell and a cavity enclosed by the shell. The filled structure is filled in the cavity and connected to the shell to form a solid composite structure. A composite additive manufacturing equipment includes a forming stage, a first material supply module and a second material supply module. The forming stage includes a forming member. The first material supply module provides a first material stacked on the forming member layer by layer to form the three-dimensional base structure. The second material supply module provides a second material filled in the cavity of the three-dimensional base structure to obtain the composite additive structure. The second material can be filled in the three-dimensional base structure using three filling strategies: local filling, layer filling and global filling.

    Ventilated three dimensional structure from additive manufacture for easy powder removal during post process
    7.
    发明授权
    Ventilated three dimensional structure from additive manufacture for easy powder removal during post process 有权

    公开(公告)号：US11339922B2

    公开(公告)日：2022-05-24

    申请号：US16925330

    申请日：2020-07-09

    Applicant: National Taiwan University of Science and Technology

    Inventor： Saurav Verma ,  Jeng-Ywan Jeng ,  Ajeet Kumar

    IPC: F16S5/00 ,  B33Y80/00 ,  B22F5/00

    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.

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