Patents by Inventor Xulin CHEN

Xulin CHEN 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).

  • Method for forming tube with high internal pressure and low external pressure, and forming machine
    Patent number: 11338345
    Abstract: Disclosed is a method for forming a tube with high internal pressure and low external pressure. The method comprises: putting a tube to be formed into a cavity, such that a bulging area (15) is formed between the tube to be formed and an inner wall of the cavity; continuously injecting a low-pressure fluid into the bulging area, and then injecting a high-pressure fluid into the interior of the tube to be formed, the high-pressure fluid creating a pressure on an outer wall of the tube to be formed such that the tube to be formed starts to expand to the bulging area; stopping the supply of the low-pressure fluid when the tube is bulged to conform to the inner wall of the cavity; and taking the formed tube out to complete a working cycle. Further disclosed is a forming machine for forming a tube according to the above method.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: May 24, 2022
    Assignee: BAOLONG (ANHUI) AUTO PARTS CO., LTD
    Inventors: Yuqing Zheng, Xulin Chen, Yulei Zheng, Shaoming Chen, Xiaobo Deng, Jie Yang, Yan Xu
  • METHOD FOR FORMING TUBE WITH HIGH INTERNAL PRESSURE AND LOW EXTERNAL PRESSURE, AND FORMING MACHINE
    Publication number: 20210170470
    Abstract: Disclosed is a method for forming a tube with high internal pressure and low external pressure. The method comprises: putting a tube to be formed into a cavity, such that a bulging area (15) is formed between the tube to be formed and an inner wall of the cavity; continuously injecting a low-pressure fluid into the bulging area, and then injecting a high-pressure fluid into the interior of the tube to be formed, the high-pressure fluid creating a pressure on an outer wall of the tube to be formed such that the tube to be formed starts to expand to the bulging area; stopping the supply of the low-pressure fluid when the tube is bulged to conform to the inner wall of the cavity; and taking the formed tube out to complete a working cycle. Further disclosed is a forming machine for forming a tube according to the above method.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 10, 2021
    Inventors: Yuqing ZHENG, Xulin CHEN, Yulei ZHENG, Shaoming CHEN, Xiaobo DENG, Jie YANG, Yan XU