Patents by Inventor Pi-Lin Tsai

Pi-Lin Tsai 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).

  • Patent number: 11654603
    Abstract: An injection molding apparatus including a mold, an injection device and at least one sensor is provided. The mold has a mold cavity. The injection device is adapted to inject a material into the mold cavity such that the material is formed into a forming article. The at least one sensor is disposed on the mold and adapted to sense at least one of a temperature and a pressure in the mold cavity. The at least one sensor is located at an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article. In addition, an injection molding method is also provided.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: May 23, 2023
    Assignee: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Yung-Hsiang Chang, Tzu-Hsiang Wei, Pi-Lin Tsai
  • Publication number: 20220111572
    Abstract: The disclosure provides an injection molding apparatus, including a mold unit, an injecting unit, and a counter pressure unit. The mold unit is adapted to provide a first cavity and a second cavity. The injecting unit is adapted to inject a first material into the first cavity to form a first molded object. The second cavity is adapted to accommodate the first molded object. The injecting unit is adapted to inject a second material into the second cavity to form a second molded object, such that the first molded object and the second molded object in the second cavity are combined. The second material is a foaming material. And the counter pressure unit is adapted to provide gas into the second cavity to increase the pressure in the second cavity.
    Type: Application
    Filed: March 4, 2021
    Publication date: April 14, 2022
    Applicant: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Yung-Hsiang Chang, Che-Wei Chang, Pi-Lin Tsai
  • Publication number: 20220040897
    Abstract: An injection molding apparatus including a mold, an injection device and at least one sensor is provided. The mold has a mold cavity. The injection device is adapted to inject a material into the mold cavity such that the material is formed into a forming article. The at least one sensor is disposed on the mold and adapted to sense at least one of a temperature and a pressure in the mold cavity. The at least one sensor is located at an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article. In addition, an injection molding method is also provided.
    Type: Application
    Filed: September 22, 2020
    Publication date: February 10, 2022
    Applicant: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Yung-Hsiang Chang, Tzu-Hsiang Wei, Pi-Lin Tsai
  • Publication number: 20210323207
    Abstract: An injection molding apparatus includes a mold, an injection device, a porous structure, and a gas-driven unit. The mold has a mold cavity. The injection device is adapted to inject a material into the mold cavity so that the material is formed into a forming article. The porous structure is disposed on an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article. The gas-driven unit is connected to the mold and is adapted to drive a gas to flow into or flow out of the mold cavity through the porous structure. In addition, an injection molding method is also provided.
    Type: Application
    Filed: June 4, 2020
    Publication date: October 21, 2021
    Applicant: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Yung-Hsiang Chang, Che-Wei Chang, Pi-Lin Tsai
  • Publication number: 20200180200
    Abstract: An injection molding apparatus including a mold and an injection device is provided. The mold includes a fixed portion and a movable portion. A molding concavity is formed between the fixed portion and the movable portion, and the movable portion is adapted to move relative to the fixed portion to change a volume of the molding cavity, so that a pressure inside the molding concavity is adjusted between a pressurized state and a non-pressurized state. The injection device is adapted to inject a material into the molding concavity. The material includes a supercritical fluid, the supercritical fluid is prevented from being gasified in the pressurized state, and the supercritical fluid is gasified in the non-pressurized state. In addition, an injection molding method is also provided.
    Type: Application
    Filed: July 5, 2019
    Publication date: June 11, 2020
    Applicant: Chung Yuan Christian University
    Inventors: Shia-Chung Chen, Yung-Hsiang Chang, Kuan-Hua Lee, Che-Wei Chang, Pi-Lin Tsai