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公开(公告)号：US20220219414A1
公开(公告)日：2022-07-14
申请号：US17707912
申请日：2022-03-29
Inventor： Jun WANG , Zhongde SHAN , Xiaokang MA , Yaoyao WANG , Haoqin YANG
Abstract: An automatic circumferential insertion apparatus and method for a complex rotary preform. The apparatus includes a double-hinge yarn carrier and a U-shaped bracket. Two ends of the double-hinge yarn carrier are respectively provided with a cylindrical hinge structure. One cylindrical hinge structure is in revolute pair connection with an outer clamping buckle at one end of the U-shaped bracket, and the other cylindrical hinge structure is in revolute pair connection with an inner clamping buckle at the other end of the U-shaped bracket. Two sides of the U-shaped bracket are provided with an electromagnet, respectively. The outer clamping buckle is provided with a pin, which is controlled by trigging, and is triggered simultaneously with the electromagnet at the side where the outer clamping buckle is arranged.
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公开(公告)号：US20220198648A1
公开(公告)日：2022-06-23
申请号：US17574843
申请日：2022-01-13
Inventor： Zhongde SHAN , Jun WANG , Zhengyuan WEI , Honghua CHEN , Qian XIE
Abstract: A method for dynamically measuring deformation of a rotating-body mold, including: (S1) subjecting an overall outer surface of the rotating-body mold to three-dimensional measurement to acquire an initial point cloud data; (S2) shooting, by a multi-camera system, the mold from different angles to obtain three-dimensional coordinates of marking points and coding points on the overall outer surface of the rotating-body mold; (S3) rotating the mold, and repeatedly photographing the marking points and the coding points on the mold surface under different angle poses; and calculating three-dimensional coordinates of the marking points and the coding points; and (S4) predicting a point cloud data of the outer surface under different angle poses based on a conversion relationship among the marking points to analyze a deformation degree of the mold during a rotation process.
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3.发明公开公开(公告)号：US20240286315A1
公开(公告)日：2024-08-29
申请号：US18572780
申请日：2022-07-23
Inventor： Zhongde SHAN , Congze FAN , Yiwei CHEN , Jinghua ZHENG , Wenzhe SONG , Jingxuan WANG
IPC: B29B11/10 , B29B11/16 , B29B15/14 , B29C64/314 , B33Y40/10
CPC classification number: B29B11/10 , B29B11/16 , B29B15/14 , B29C64/314 , B33Y40/10
Abstract: A composite filament melt impregnation device with an automatic lifting channel for additive manufacturing includes a mechanical lifting device, a heating device, a curved resin impregnation channel, a filament guide block, a single screw extruder, a replaceable combination die nozzle, and a resin riser. The composite filament melt impregnation device can significantly improve the efficiency of replacing filaments and treating broken filaments in a forming process of continuous fiber filaments, reduce the operation difficulty of a production process, and ensure the safety of operators. The design of the resin riser can achieve slight dynamic adjustment of pressure in a melt cavity in the production process, improve the stability of product quality, and ultimately achieve continuous production and rapid replacement of high-performance continuous fiber composites.
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公开(公告)号：US20230398601A1
公开(公告)日：2023-12-14
申请号：US18037783
申请日：2022-09-05
Inventor： Haoqin YANG , Zhongde SHAN , Qinjiang LIU , Jianpei SHI , Dandan YAN , Shijie DONG
Abstract: A method for preparing a negative pressure film-covering frozen sand mold includes: directly obtaining a mold cavity of a sand mold through numerically controlled machining of a frozen sand blank; covering a surface, brushed with a thermal insulation coating, of the mold cavity of the sand mold with a softened thin film, and covering an outer surface of the sand mold with a back film to seal a sand box; fixing the frozen sand mold in an air extraction sand box with a vacuum chamber, and extracting air through a vacuum pump, so that the thin film tightly adheres to the sand mold through vacuum suction force; and closing the box to obtain an integral sand mold, and pouring a casting at room temperature or low temperature under negative pressure. The method is environment-friendly, and the prepared frozen sand mold has high strength and is convenient for sand cleaning.
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公开(公告)号：US20230306577A1
公开(公告)日：2023-09-28
申请号：US18321527
申请日：2023-05-22
Inventor： Jun WANG , Zhongde SHAN , Li DAI , Dawei LI
CPC classification number: G06T7/0004 , G06V20/70 , G06V10/7715 , G06V10/806 , G06T2207/10028 , G06T2207/20081 , G06T2207/30108
Abstract: A cross-scale defect detection method based on deep learning, including: (S1) building a vision data acquisition system to acquire a surface image of a part to be processed; and building a defect dataset; (S2) building a deep learning-based cross-scale defect detection model; and inputting the defect dataset obtained in the step (S1) into the deep learning-based cross-scale defect detection model for model training; and (S3) building a defect detection system according to the deep learning-based cross-scale defect detection model and the vision data acquisition system; and detecting a defect of the surface image of the part to be processed.
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Patent Agency Ranking
公开(公告)号：US20230121449A1
公开(公告)日：2023-04-20
申请号：US17918347
申请日：2022-06-15
Inventor： Zhongde SHAN , Haoqin YANG , Jianpei SHI
Abstract: An interlayer pre-cooling apparatus for a sand mold freezing printing includes a sand paving apparatus. The sand paving apparatus is located above a negative-pressure low-temperature forming chamber, and the sand paving apparatus includes several independent sand paving grooves, a hollow sand paving roller, a cooling chamber, a sand scraping plate, and an openable and closable baffle. The openable and closable baffle is rotationally arranged at a discharge port of each sand paving apparatus, and the openable and closable baffle is used for paving low temperature premixed sand on demand. The premixed molding sand is further cooled during the process of scraping and compacting low-temperature molding sand. When the apparatus is adopted for sand mold freezing 3D printing, the low temperature of the premixed molding sand is precisely controllable, which has great significance for realizing interlayer pre-cooling of the sand mold freezing printing.
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7.发明公开公开(公告)号：US20240191406A1
公开(公告)日：2024-06-13
申请号：US18587731
申请日：2024-02-26
Inventor： Zhongde SHAN , Zheng SUN , Zhengxi ZHOU , Yaoyao WANG , Weihao WANG , Jiale LIU
Abstract: The present invention discloses an integrated braiding and needle punching preform forming method, comprising the following steps: arranging gripping devices at both ends of a braiding machine, allowing a mandrel to move in a certain direction along the axis of the braiding machine while forming a first layer of fabric on a surface of the mandrel; then laying felt on top of the first layer of fabric by using an automatic felt laying device, and employing a needle punching device to perform pre-needle punching on the felt layer to ensure the felt adheres to the braided fabric surface; restarting the braiding machine, moving the mandrel in an opposite direction while forming a second layer of fabric on a surface of the felt; repeating the above steps to achieve multiple layers of braided fabric and felt in alternate adhesion; finally, performing main needle punching on the preform.
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8.发明公开公开(公告)号：US20240024956A1
公开(公告)日：2024-01-25
申请号：US18008979
申请日：2022-06-15
Inventor： Zhongde SHAN , Haoqin YANG , Qinjiang LIU
Abstract: A low-temperature airflow follow-up auxiliary sand discharge apparatus for cutting a frozen sand mold includes a frozen sand mold to be machined, a hollow cutter, a spindle mounted on the hollow cutter, an air pipe, and a refrigeration apparatus connected to one end of the air pipe. The refrigeration apparatus is fixed to an air pump by a valve. An inner cavity of the hollow cutter is provided with a cutter through hole along an axis. An inner cavity of the spindle is provided with a spindle through hole along the axis. An upper end of the spindle is provided with a bearing seat hole for placing a bearing. An outer circle of the bearing matches the bearing seat hole, and an inner circle of the bearing is mounted with an air pipe connector. The air pipe is connected and fixed to the air pipe connector.
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公开(公告)号：US20230281972A1
公开(公告)日：2023-09-07
申请号：US18316326
申请日：2023-05-12
Inventor： Jun WANG , Zhongde SHAN , Shiyan HUA , Dawei LI
IPC: G06V10/774 , G06T7/00 , G06V10/764 , G06T7/73 , G06V10/82 , G06V10/77
CPC classification number: G06V10/774 , G06T7/0004 , G06V10/764 , G06T7/73 , G06V10/82 , G06V10/7715 , G06T2207/20081 , G06T2207/20084 , G06T2207/20021 , G06T2207/30164
Abstract: A few-shot defect detection method based on metric learning, including: (S1) performing data enhancement on a to-be-detected few-shot defect data set through a G2-Generative adversarial network (G2-GAN); (S2) extracting features of a defect data set similar to the to-be-detected few-shot defect data set based on an adaptive convolution kernel-based convolutional neural network (SKM-CNN) to generate a pre-training model; and (S3) transferring the pre-training model to a few-shot defect detection network (S2D2N) based on metric learning; and performing target feature extraction and metric learning in sequence to realize rapid identification and location of defects.
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公开(公告)号：US20220213627A1
公开(公告)日：2022-07-07
申请号：US17702145
申请日：2022-03-23
Inventor： Zhongde SHAN , Jun WANG , Yaoyao WANG , Haoqin YANG , Chao LI
Abstract: A mechanism for radially inserting a yarn into a 3D braided preform, including a first bracket, an upper linear actuator, a support mechanism, an upper yarn insertion device, a yarn carrying device, an upper gear ring, a lower yarn insertion device, a lower linear actuator, a second bracket, a lower gear ring, a lower gear, a lower motor, a lower circular track, an upper circular track, a base, an upper gear, a pneumatic transmission and control device and an upper motor.
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