Patents by Inventor Meng Jian
Meng Jian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11360464Abstract: High intensity multi-directional FDM 3D printing method for stereo vision monitoring involves intelligent control and computer vision technology. Specifically, it involves multi-directional 3D printing hardware platform construction, stereo vision detection, laser heating to enhance the connection strength between various parts of the model, so as to reduce the use of external support structure as much as possible on the premise of ensuring the printing accuracy, and make the various parts of the model can be well connected to enhance the integrity of the model.Type: GrantFiled: May 3, 2021Date of Patent: June 14, 2022Assignee: BEIJING UNIVERSITY OF TECHNOLOGYInventors: Lifang Wu, Yupeng Guan, Miao Yu, Yisong Gao, Meishan Liu, Zechao Liu, Meng Jian, Ye Xiang, Ge Shi
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Patent number: 11353845Abstract: A model-adaptive multi-source large-scale mask projection 3D printing system configured to conduct the following steps: projecting pure-color images of first and second colors having identical attributes, capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two gray scale images having identical attributes thereto; counting power values of identical positions of slices in different gray scale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on gray scale interpolation of the generated images; and fusing the processed gray scale images and the originally split two slices to obtain a mask projection 3D printing slice having a uniform shaping brightness, and forming a final product.Type: GrantFiled: August 25, 2020Date of Patent: June 7, 2022Assignee: Beijing University of TechnologyInventors: Lifang Wu, Lidong Zhao, Zechao Liu, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang
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Publication number: 20220072792Abstract: A 3D printing method employing an adaptive internal supporting structure, involving the steps of: S1—extracting images from a reference biological structure picture to obtain a multi-layer grid texture serving as a plurality of layer pictures for an internal supporting structure of a 3D model; S2—separating multi-layer structures of the model layer-by-layer, and performing binarization and hollowing processing on each layer to obtain a plurality of images; S3—merging each layer picture obtained in step S1 with a corresponding image obtained in step S2 to obtain a plurality of final slice layer structures; S4—determining a support region of the supporting structure in each slice layer according to strength requirements; S5—analyzing the model to perform adaptive structural design and adjusting its strength-material ratio; and S6—restoring the model by using a 3D reconstruction algorithm and printing the model.Type: ApplicationFiled: December 29, 2018Publication date: March 10, 2022Applicant: Beijing University of TechnologyInventors: Lifang WU, Lidong ZHAO, Yuxin MAO, Tianqin YANG, Meng JIAN, Ye XIANG, Ge SHI
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Patent number: 11225018Abstract: A multi-degree-of-freedom (Multi-DOF) 3D printing device includes a printer mechanism, a rotatable platform, a visual inspection system, and a control system. The printing mechanism includes a print head. The printing mechanism and the rotatable platform are combined to have three degrees of freedom of translation, and the rotatable platform has two degrees of freedom of rotation. The visual inspection system includes a camera mounted to nearby the print head and the relative position of camera and print head remains constant. The control system is configured to implement the printing process. The model is decomposed into several components, each of which could be printed in a single direction. After one component is printed out, the platform is then rotated so that the cutting plane for the component will be printed is horizontal.Type: GrantFiled: June 19, 2019Date of Patent: January 18, 2022Assignees: Beijing University of Technology, Beijing Cloud Profound Technologies Company LimitedInventors: Lifang Wu, Miao Yu, Yisong Gao, Lidong Zhao, Yuan Gao, Xiaohua Guo, Meng Jian, Changling Wang, Ziming Zhang, Yuanzheng Shi
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Publication number: 20210302949Abstract: High intensity multi-directional FDM 3D printing method for stereo vision monitoring involves intelligent control and computer vision technology. Specifically, it involves multi-directional 3D printing hardware platform construction, stereo vision detection, laser heating to enhance the connection strength between various parts of the model, so as to reduce the use of external support structure as much as possible on the premise of ensuring the printing accuracy, and make the various parts of the model can be well connected to enhance the integrity of the model.Type: ApplicationFiled: May 3, 2021Publication date: September 30, 2021Inventors: Lifang WU, Yupeng GUAN, Miao YU, Yisong GAO, Meishan LIU, Zechao LIU, Meng JIAN, Ye XIANG, Ge SHI
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Publication number: 20210018897Abstract: A model-adaptive multi-source large-scale mask projection 3D printing system configured to conduct the following steps: projecting pure-color images of first and second colors having identical attributes, capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two gray scale images having identical attributes thereto; counting power values of identical positions of slices in different gray scale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on gray scale interpolation of the generated images; and fusing the processed gray scale images and the originally split two slices to obtain a mask projection 3D printing slice having a uniform shaping brightness, and forming a final product.Type: ApplicationFiled: August 25, 2020Publication date: January 21, 2021Inventors: Lifang Wu, Lidong Zhao, Zechao Liu, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang
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Patent number: 10759110Abstract: A light homogenization method for multi-source large-scale surface exposure 3D printing, comprising the following steps: projecting pure-color images of a first color and a second color having identical attributes capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two grayscale images having identical attributes thereto; counting power values of identical positions of slices in different grayscale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on grayscale interpolation of the generated images; and fusing the processed grayscale images and the originally split two slices to obtain a surface exposure 3D printing slice having a uniform brightness in final shaping.Type: GrantFiled: November 17, 2016Date of Patent: September 1, 2020Assignee: Beijing University of TechnologyInventors: Lifang Wu, Lidong Zhao, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang
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Publication number: 20190299523Abstract: A multi-degree-of-freedom (Multi-DOF) 3D printing device includes a printer mechanism, a rotatable platform, a visual inspection system, and a control system. The printing mechanism includes a print head. The printing mechanism and the rotatable platform are combined to have three degrees of freedom of translation, and the rotatable platform has two degrees of freedom of rotation. The visual inspection system includes a camera mounted to nearby the print head and the relative position of camera and print head remains constant. The control system is configured to implement the printing process. The model is decomposed into several components, each of which could be printed in a single direction. After one component is printed out, the platform is then rotated so that the cutting plane for the component will be printed is horizontal.Type: ApplicationFiled: June 19, 2019Publication date: October 3, 2019Applicants: Beijing University of Technology, Beijing Cloud Profound Technologies Company LimitedInventors: Lifang Wu, Miao Yu, Yisong Gao, Lidong Zhao, Yuan Gao, Xiaohua Guo, Meng Jian, Changling Wang, Ziming Zhang, Yuanzheng Shi
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Publication number: 20190291341Abstract: A light homogenization method for multi-source large-scale surface exposure 3D printing, comprising the following steps: projecting pure-color images of a first color and a second color having identical attributes, capturing an image of an overlapping portion and calculating height and width information of the overlapping portion; splitting a pre-processed slice and respectively recording width and height information of two slices resulting from the splitting and generating two grayscale images having identical attributes thereto; counting power values of identical positions of slices in different grayscale values, performing a further calculation to obtain a projection mapping function, using the projection mapping function as a basis for performing optimization on grayscale interpolation of the generated images; and fusing the processed grayscale images and the originally split two slices to obtain a surface exposure 3D printing slice having a uniform brightness in final shaping.Type: ApplicationFiled: November 17, 2016Publication date: September 26, 2019Inventors: Lifang Wu, Lidong Zhao, Jiankang Qiu, Xiaohua Guo, Meng Jian, Ziming Zhang