Patents by Inventor Rong-Yeu Chang

Rong-Yeu Chang 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: 11027470
    Abstract: A molding system includes a molding machine having a screw, a driving motor driving the screw to move a molding resin; a mold disposed on the molding machine and connected to the barrel of the molding machine to receive the molding resin, and having a mold cavity with a die swell structure for being filled with the molding resin; a processing module simulating a filling process of the molding resin from the barrel into the molding cavity based on a molding condition including a predetermined screw speed for the molding machine; and a controller operably communicating with the molding machine to control the driving motor of the molding machine based on the molding conditions to move the screw at the predetermined screw speed to transfer the molding resin at a corresponding flow rate to perform an actual molding process for preparing the injection-molded article.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: June 8, 2021
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
  • Patent number: 10987844
    Abstract: The present disclosure provides a clamping assembly in operative connection with a mold of an injection-molding apparatus. The clamping assembly includes a fixed plate, a rear plate, a plurality of tie bars, a movable plate, a driving module, and a temperature adjuster. The rear plate is spaced apart from the fixed plate. The tie bars are interlinked with the fixed plate and the rear plate and provided with a plurality of channels. The movable plate, between the fixed plate and the rear plate, is capable of moving with respect to the fixed plate along the tie bars. The driving module interlinks the rear plate and the movable plate. The temperature adjuster is employed to supply a fluid into the channels to remove heat from the tie bars, thereby preventing non-uniform thermal expansion of the tie bars, and hence preventing the structural wear and flash issues.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 27, 2021
    Assignee: Coretech System Co., Ltd.
    Inventors: Yuing Chang, Chih-Kang Lee, Chia-Hsiang Hsu, Rong-Yeu Chang
  • Publication number: 20210107197
    Abstract: The present disclosure provides a clamping assembly in operative connection with a mold of an injection-molding apparatus. The clamping assembly includes a fixed plate, a rear plate, a plurality of tie bars, a movable plate, a driving module, and a temperature adjuster. The rear plate is spaced apart from the fixed plate. The tie bars are interlinked with the fixed plate and the rear plate and provided with a plurality of channels. The movable plate, between the fixed plate and the rear plate, is capable of moving with respect to the fixed plate along the tie bars. The driving module interlinks the rear plate and the movable plate. The temperature adjuster is employed to supply a fluid into the channels to remove heat from the tie bars, thereby preventing non-uniform thermal expansion of the tie bars, and hence preventing the structural wear and flash issues.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 15, 2021
    Inventors: Yuing CHANG, Chih-Kang LEE, Chia-Hsiang HSU, Rong-Yeu CHANG
  • Patent number: 10960592
    Abstract: A computer-implemented simulation method for use in a molding process by a computer process is disclosed. The method includes steps of specifying a simulating domain comprising a mold cavity and a barrel of an injection machine, wherein the barrel is configured to connect to the mold cavity; creating at least one mesh by dividing at least part of the simulating domain; specifying boundary conditions of the mesh by taking into consideration at least one motion of a screw in the barrel; and simulating a first injection-molding process of a molding material by using the boundary conditions to generate a plurality of molding conditions.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 30, 2021
    Assignee: Coretech System Co., Ltd.
    Inventors: Chih-Chung Hsu, You-Sheng Zhou, Chia-Hsiang Hsu, Rong-Yeu Chang
  • Patent number: 10946597
    Abstract: The present disclosure provides a measurement method for a molding system comprising an upper mold and a lower mold forming a mold cavity. The method includes applying a pressure difference to a molding resin for driving the molding resin to flow into a preform in the mold cavity; detecting a flow front of the molding resin at a first position and a second position in the mold cavity; and calculating a flowing property of the molding resin based on the first position, the second position, a travelling time of the flow front from the first position to the second position, and the pressure difference.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: March 16, 2021
    Assignees: Coretech System Co., Ltd., National Tsing Hua University
    Inventors: Yuan Yao, Tzu-Heng Chiu, Rong-Yeu Chang, Chia-Hsiang Hsu, Chih-Wei Wang, Shih-Po Sun, Sung-Wei Huang, Hsun Yang, Tsai-Heng Tsai
  • Patent number: 10940623
    Abstract: The present disclosure provides a molding system for preparing molding articles. The molding system includes a molding machine; a mold disposed on the molding machine and having a mold cavity for being filled with a molding resin; a processing module configured to generate a mechanical pressure distribution of the molding resin in the mold cavity based on a molding condition for the molding machine, wherein the mechanical pressure distribution of the molding resin is generated based in part on a bulk viscosity effect of the molding resin; and a controller operably communicating with the processing module and configured to operate the molding machine for transferring the fluid molding material into the mold cavity with the molding condition using the generated pressure distribution of the molding resin to perform an actual molding process for preparing the molding article.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 9, 2021
    Assignee: Coretech System Co., Ltd.
    Inventors: Yuan-Jung Chang, Rong-Yeu Chang, Chen-Chieh Wang, Chia-Hsiang Hsu
  • Publication number: 20210046686
    Abstract: The present disclosure provides a molding system for preparing injection-molded articles. The molding system includes a molding machine; a mold disposed on the molding machine and having a mold cavity for being filled with a molding resin; a processing module configured to generate an anisotropic viscosity distribution of the molding resin in the mold cavity based on a molding condition for the molding machine, wherein the anisotropic viscosity distribution of the molding resin is generated based in part on an elastic effect of the molding resin; and a controller operably communicating with the processing module and configured to control the molding machine with the molding condition using the generated anisotropic viscosity distribution of the molding resin to perform an actual molding process for preparing the injection-molded article.
    Type: Application
    Filed: June 10, 2020
    Publication date: February 18, 2021
    Inventors: Huan-Chang TSENG, Rong-Yeu CHANG, Chia-Hsiang HSU
  • Patent number: 10919202
    Abstract: The present disclosure provides a molding system for preparing injection-molded articles. The molding system includes a molding machine; a mold disposed on the molding machine and having a mold cavity for being filled with a molding resin; a processing module configured to generate an anisotropic viscosity distribution of the molding resin in the mold cavity based on a molding condition for the molding machine, wherein the anisotropic viscosity distribution of the molding resin is generated based in part on an elastic effect of the molding resin; and a controller operably communicating with the processing module and configured to control the molding machine with the molding condition using the generated anisotropic viscosity distribution of the molding resin to perform an actual molding process for preparing the injection-molded article.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: February 16, 2021
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
  • Patent number: 10864667
    Abstract: A molding system comprises a mold, a molding machine, a computing apparatus, and a controller. The computing apparatus is programmed to perform a first simulation to generate a velocity distribution and a temperature distribution of the molding material in a first portion of a simulating domain and a second simulation to generate a melting distribution of the solid decorating film in a second portion of the simulating domain, wherein the simulating domain corresponds to the mold cavity. The first molding simulation is to performed using a molding condition of the molding machine to set a boundary condition of the first portion, and the second molding simulation is performed using the velocity distribution and the temperature distribution of the molding material to set a boundary condition of the second portion.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 15, 2020
    Assignee: CORETECH SYSTEMS CO., LTD.
    Inventors: Chih-Chung Hsu, Tung-Huan Su, Hsien-Sen Chiu, Chia-Hsiang Hsu, Rong-Yeu Chang
  • Publication number: 20200384674
    Abstract: A system for setting injection-molding conditions and a method for setting actual molding conditions of an injection-molding machine are disclosed. The system includes a computer and an injection-molding equipment. The computer is configured to simulate, via computer-aided simulation software, a virtual molding using a plurality of design parameters to generate a plurality of provisional molding conditions. The injection-molding equipment is associated with the computer and configured to perform at least one trial molding using the provisional molding conditions to obtain a plurality of intermediate molding conditions. The computer optimizes the provisional molding conditions to obtain actual molding conditions in accordance with the intermediate molding conditions.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 10, 2020
    Inventors: RONG-YEU CHANG, CHIA-HSIANG HSU, CHUAN-WEI CHANG
  • Publication number: 20200384675
    Abstract: A system for setting injection-molding conditions and a method for setting actual molding conditions of an injection-molding machine are disclosed. The system includes a computer and an injection-molding equipment. The computer is configured to simulate, via computer-aided simulation software, a virtual molding using a plurality of design parameters to generate a plurality of provisional molding conditions. The injection-molding equipment is associated with the computer and configured to perform at least one trial molding using the provisional molding conditions to obtain a plurality of intermediate molding conditions. The computer optimizes the provisional molding conditions to obtain actual molding conditions in accordance with the intermediate molding conditions.
    Type: Application
    Filed: June 24, 2020
    Publication date: December 10, 2020
    Inventors: RONG-YEU CHANG, CHIA-HSIANG HSU, CHUAN-WEI CHANG
  • Publication number: 20200376733
    Abstract: A computer-implemented simulation method for use in a molding process by a computer process is disclosed. The method includes steps of specifying a simulating domain comprising a mold cavity and a barrel of an injection machine, wherein the barrel is configured to connect to the mold cavity; creating at least one mesh by dividing at least part of the simulating domain; specifying boundary conditions of the mesh by taking into consideration at least one motion of a screw in the barrel; and simulating a first injection-molding process of a molding material by using the boundary conditions to generate a plurality of molding conditions.
    Type: Application
    Filed: September 30, 2019
    Publication date: December 3, 2020
    Inventors: Chih-Chung HSU, You-Sheng ZHOU, Chia-Hsiang HSU, Rong-Yeu CHANG
  • Patent number: 10710285
    Abstract: The present disclosure provides a molding system for preparing injection-molded articles. The molding system includes a molding machine; a mold disposed on the molding machine and having a mold cavity for being filled with a molding resin; a processing module configured to generate a mixed anisotropic viscosity distribution of the molding resin in the mold cavity based on a molding condition for the molding machine; and a controller coupled to the processing module. The mixed anisotropic viscosity distribution of the molding resin is generated by taking into consideration an extension rate distribution and a shear rate distribution of the molding resin. The controller is configured to control the molding machine with the molding condition using the generated extension rate distribution and the generated shear rate distribution of the molding resin to perform an actual molding process for preparing the injection-molded article.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: July 14, 2020
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
  • Patent number: 10713402
    Abstract: The present disclosure provides a molding system for preparing an injection-molded article. The molding system includes a molding machine; a mold disposed on the molding machine and having a mold cavity for being filled with a molding resin; a processing module configured to generate an extension rate distribution and a shear rate distribution of the molding resin in the mold cavity based on a molding condition for the molding machine; and a controller coupled to the processing module. The processing module is configured to generate the extension rate distribution and the shear rate distribution of the molding resin based in part on consideration of a geometry variation of the mold cavity. The controller is configured to control the molding machine with the molding condition using the generated extension rate distribution and the generated shear rate distribution of the molding resin to perform an actual molding process for preparing the injection-molded article.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: July 14, 2020
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
  • Patent number: 10703030
    Abstract: The present disclosure provides a molding system for preparing an injection-molded fiberless plastic article. The molding system includes a molding machine; a mold disposed on the molding machine; a processing module configured to generate an anisotropic viscosity distribution of the fiberless molding resin in the mold cavity; and a controller coupled to the processing module. The mold has a mold cavity for being filled with a fiberless molding resin including a plurality of polymer chains. The processing module is configured to generate the anisotropic viscosity distribution based on a molding condition for the molding machine and based in part on consideration of an orientation effect of the plurality of polymer chains. The controller is configured to control the molding machine with the molding condition using the generated anisotropic viscosity distribution of the fiberless molding resin to perform an actual molding process for preparing the injection-molded fiberless plastic article.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: July 7, 2020
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
  • Publication number: 20200070389
    Abstract: A device, a system and a method for modeling fiber orientation distribution related to an injection molding object are provided. The device of the system obtains an aspect ratio of a non-cylindrical fiber, and inputs the aspect ratio and fiber data of the non-cylindrical fiber into an orientation distribution generation model for outputting a non-cylindrical fiber orientation distribution. The device determines whether the non-cylindrical fiber orientation distribution corresponds to a predetermined orientation distribution.
    Type: Application
    Filed: January 22, 2019
    Publication date: March 5, 2020
    Inventors: HUAN-CHANG TSENG, RONG-YEU CHANG, CHIA-HSIANG HSU
  • Publication number: 20200061941
    Abstract: The present disclosure provides a measurement method for a molding system comprising an upper mold and a lower mold forming a mold cavity. The method includes applying a pressure difference to a molding resin for driving the molding resin to flow into a preform in the mold cavity; detecting a flow front of the molding resin at a first position and a second position in the mold cavity; and calculating a flowing property of the molding resin based on the first position, the second position, a travelling time of the flow front from the first position to the second position, and the pressure difference.
    Type: Application
    Filed: October 29, 2019
    Publication date: February 27, 2020
    Inventors: Yuan YAO, Tzu-Heng CHIU, Rong-Yeu CHANG, Chia-Hsiang HSU, Chih-Wei WANG, Shih-Po SUN, Sung-Wei HUANG, Hsun YANG, Tsai-Heng TSAI
  • Patent number: 10562218
    Abstract: The present disclosure provides a method for operating a molding system. The molding system includes a molding machine and a mold disposed on the molding machine, wherein the mold has a mold cavity for being filled with a molding material from the molding machine. The method comprises a step of obtaining a predetermined state waveform expressing a predetermined volumetric variation of the molding material. Next, the method further comprises obtaining a measured pressure and a measured temperature of the molding material in the mold cavity while performing a molding process for filling the molding material into the mold cavity. Next, the method includes obtaining a detected volumetric property of the molding material corresponding to the measured pressure and the measured temperature. Subsequently, the method comprises displaying the detected volumetric property of the molding material with the predetermined state waveform.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: February 18, 2020
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Yuing Chang, Rong-Yeu Chang, Chia-Hsiang Hsu, Chuan-Wei Chang, Ching-Chang Chien
  • Patent number: 10466089
    Abstract: The present disclosure provides a measuring apparatus including a testing module. The testing module includes: a temperature-controlling cylinder having a top opening and a bottom opening; an upper piston and a lower piston respectively seal the top opening and the bottom opening of the temperature-controlling cylinder so that a testing chamber is formed inside the temperature-controlling cylinder, wherein the testing chamber has a longitudinal length; and a pipe surrounding the testing chamber along the longitudinal length in such a way that when a wire is provided along and in the pipe with a number of turns, a density of the turns has at least two different values over the longitudinal length.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 5, 2019
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Yuing Chang, Rong-Yeu Chang, De-Lung Lai, Chia-Hsiang Hsu
  • Patent number: D866566
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: November 12, 2019
    Assignee: CORETECH SYSTEM CO., LTD.
    Inventors: Yuing Chang, Rong-Yeu Chang, Chia-Hsiang Hsu, Chuan-Wei Chang