Patents by Inventor Chow-Chi Huang

Chow-Chi Huang 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: 11161286
    Abstract: Non-time dependent measured variables are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: November 2, 2021
    Assignee: IMFLUX INC.
    Inventors: Richard Lewis Montague, II, Rick Alan Pollard, Chow-Chi Huang, Gene Michael Altonen, Kimberly Nichole McConnell, Aaron Timothy Neate
  • Publication number: 20210308923
    Abstract: Non-time dependent measured variables are used to effectively determine an optimal ejection time of a part from a mold cavity. A system and/or approach may first measure at least one non-time dependent variable during an injection molding cycle. The part is ready to be ejected from the mold upon the measured variable reaching a threshold value indicative of, for example, a part temperature dropping below an activation temperature.
    Type: Application
    Filed: June 16, 2021
    Publication date: October 7, 2021
    Inventors: Nicholas Mulkern Unkovic, Gene Michael Altonen, Daniel David Lumpkin, William Francis Lawless, III, H. Kenneth Hanson, III, Chow-Chi Huang
  • Publication number: 20210268705
    Abstract: Non-time dependent calculated variables based on measured strain are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure strain at the mold cavity or at another location within the injection molding system, and then calculate at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Inventors: William Francis Lawless, III, Rick Alan Pollard, Gene Michael Altonen, Chow-Chi Huang
  • Publication number: 20210260805
    Abstract: A system includes a cavity, an injection nozzle configured to inject material into the cavity, and a plurality of sensors at sensor locations. Each of the plurality of sensors is configured to measure parameters at one of the sensor locations. The system lacks a strain gauge. The system further includes a controller configured to control a flow rate of the injection of material into the cavity. The controller is configured to receive the measured parameters and compare the received information to predetermined curves. The controller is configured to control the flow rate when the measured parameters deviate from the predetermined curves.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Inventors: Milko Gergov, Chow-Chi Huang, Steve Steve Burns, Rick Alan Pollard
  • Patent number: 11072102
    Abstract: Non-time dependent measured variables are used to effectively determine an optimal ejection time of a part from a mold cavity. A system and/or approach may first measure at least one non-time dependent variable during an injection molding cycle. The part is ready to be ejected from the mold upon the measured variable reaching a threshold value indicative of, for example, a part temperature dropping below an activation temperature.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 27, 2021
    Assignee: IMFLUX, INC.
    Inventors: Nicholas Mulkern Unkovic, Gene Michael Altonen, Daniel Lumpkin, William Francis Lawless, III, H. Kenneth Hanson, III, Chow-Chi Huang
  • Publication number: 20210187811
    Abstract: A method of monitoring and controlling a molding clamping apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a mold while it is closing from a first strain gauge, identifying a deviation from a target strain profile based on the output from the first strain gauge, determining that the deviation exceeds the deviation limit, and adjusting the rate or force of clamp movement. The target strain profile may have a first portion relating to a clamp closing process, a second portion relating to a filling process, and a third portion relating to a clamp opening process. The first portion relating to the clamp closing process may include an intermediate portion relating to a coining process having an intermediate clamp force setpoint.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Inventors: William Francis Lawless, III, Rick Alan Pollard, Chow-Chi Huang, Gene Michael Altonen
  • Patent number: 11040472
    Abstract: Non-time dependent calculated variables based on measured strain are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure strain at the mold cavity or at another location within the injection molding system, and then calculate at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: June 22, 2021
    Assignee: IMFLUX INC.
    Inventors: William Francis Lawless, III, Rick Alan Pollard, Gene Michael Altonen, Chow-Chi Huang
  • Patent number: 11034070
    Abstract: A system includes a cavity, an injection nozzle configured to inject material into the cavity, and a plurality of sensors at sensor locations. Each of the plurality of sensors is configured to measure parameters at one of the sensor locations. The system lacks a strain gauge. The system further includes a controller configured to control a flow rate of the injection of material into the cavity. The controller is configured to receive the measured parameters and compare the received information to predetermined curves. The controller is configured to control the flow rate when the measured parameters deviate from the predetermined curves.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: June 15, 2021
    Assignee: IMFLUX INC.
    Inventors: Milko Gergov, Chow-Chi Huang, Steve Andrew Burns, Rick Alan Pollard
  • Publication number: 20210170655
    Abstract: Non-time dependent measured variables are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Richard Lewis Montague, II, Rick Alan Polland, Chow-Chi Huang, Gene Michael Altonen, Kimberly Nichole McConnell, Aaron Timothy Neate
  • Patent number: 10974430
    Abstract: A method of monitoring and controlling a molding clamping apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a mold while it is closing from a first strain gauge, identifying a deviation from a target strain profile based on the output from the first strain gauge, determining that the deviation exceeds the deviation limit, and adjusting the rate or force of clamp movement. The target strain profile may have a first portion relating to a clamp closing process, a second portion relating to a filling process, and a third portion relating to a clamp opening process. The first portion relating to the clamp closing process may include an intermediate portion relating to a coining process having an intermediate clamp force setpoint.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: April 13, 2021
    Assignee: IMFLUX INC.
    Inventors: William Francis Lawless, III, Rick Alan Pollard, Chow-Chi Huang, Gene Michael Altonen
  • Publication number: 20210101323
    Abstract: Embodiments within the scope of the present disclosure are directed to external sensor kits that may be included in new injection molds or retrofitted into existing injection molds in order to approximate conditions within a mold, such as pressure or the location of a melt flow front. Such kits are designed to amplify meaningful measurements obtained by the external sensor kit so that noise measurements do not prevent the approximation of conditions within a mold. In some embodiments within the scope of the present disclosure, an external sensor kit includes a strain gauge sensor, a coupon, a support bracket, and a hammer. The strain gauge sensor is placed on a surface of the coupon and measures the strain in the coupon.
    Type: Application
    Filed: December 17, 2020
    Publication date: April 8, 2021
    Inventors: Chow-Chi Huang, Rick Alan Pollard, Gene Michael Altonen
  • Patent number: 10953583
    Abstract: Non-time dependent measured variables are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: March 23, 2021
    Assignee: IMFLUX INC.
    Inventors: Richard Lewis Montague, II, Rick Alan Pollard, Chow-Chi Huang, Gene Michael Altonen, Kimberly Nichole McConnell, Aaron Timothy Neate
  • Patent number: 10899058
    Abstract: Embodiments within the scope of the present disclosure are directed to external sensor kits that may be included in new injection molds or retrofitted into existing injection molds in order to approximate conditions within a mold, such as pressure or the location of a melt flow front. Such kits are designed to amplify meaningful measurements obtained by the external sensor kit so that noise measurements do not prevent the approximation of conditions within a mold. In some embodiments within the scope of the present disclosure, an external sensor kit includes a strain gauge sensor, a coupon, a support bracket, and a hammer. The strain gauge sensor is placed on a surface of the coupon and measures the strain in the coupon.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: January 26, 2021
    Assignee: IMFLUX INC.
    Inventors: Chow-Chi Huang, Rick Alan Pollard, Gene Michael Altonen
  • Patent number: 10894349
    Abstract: A method of monitoring and controlling a sequential valve gate molding apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a first valve gate from a first strain gauge, identifying whether a deviation exists from a first portion of the target strain profile based on the output from the first strain gauge, determining whether any existing deviation exceeds the deviation limit, and adjusting the position of a first valve gate pin in the first valve gate if it does. The method may further include control of subsequent valve gates. Multiple strain gauges may be used to control a single valve gate, and/or each strain gauge may control more than one valve gate.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: January 19, 2021
    Assignee: IMFLUX INC.
    Inventors: William Francis Lawless, III, Chow-Chi Huang, Gene Michael Altonen, Brandon Michael Birchmeier
  • Patent number: 10737420
    Abstract: A nozzle assembly for an injection molding system has a nozzle adapter with one or more vent holes therein. A porous metal insert is provided in fluid communication with at least one of the vent holes. The porous metal insert is also in fluid communication with a flow channel through the nozzle assembly. As molten polymeric material advances through the flow channel from a barrel to a mold assembly, gases entrained in the molten polymeric material are vented through the porous metal insert and escape through the one or more vent holes. Pressurized air may be introduced through the vent holes, such as by one or more blow-back modules, to unclog pores of the one or more porous metal inserts between shots of the injection molding system.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: August 11, 2020
    Assignee: IMFLUX INC.
    Inventors: Frank Gustaaf Debruin, Chow-Chi Huang, Michael Thomas Dodd
  • Publication number: 20200086542
    Abstract: A method for controlling an injection molding process based upon an actual plastic melt pressure including identifying an optimal actual plastic melt pressure curve over time based on a baseline cycle, and adjusting in a subsequent cycle an injection pressure in order to cause a monitored pressure of the molten thermoplastic material to follow the optimal actual plastic melt pressure curve over time. A method for controlling an injection molding process based upon an plastic melt pressure setpoint adjusted using a cavity pressure, wherein the cavity pressure is multiplied by a process factor. Further, a method for controlling an injection molding process using real time cavity pressure including identifying an optimal cavity pressure curve over time based on a baseline cycle and adjusting, in a subsequent cycle, an injection pressure in order to cause a monitored cavity pressure to follow the optimal cavity pressure curve over time.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 19, 2020
    Inventors: Bryler Collins, William Francis Lawless, III, Gene Michael Altonen, Chow-Chi Huang
  • Publication number: 20190366607
    Abstract: A controller for an injection molding system is in communication with a melt flow control unit, a gas assist control unit, and a gas counter pressure control unit. The controller can effect real-time adjustments to gas assist pressure and/or gas counter pressure as a function of melt pressure or flow front position.
    Type: Application
    Filed: April 17, 2019
    Publication date: December 5, 2019
    Inventors: William Francis Lawless, III, H. Kenneth Hanson, III, Gene Michael Altonen, Chow-Chi Huang
  • Publication number: 20190337207
    Abstract: Embodiments within the scope of the present disclosure are directed to external sensor kits that may be included in new injection molds or retrofitted into existing injection molds in order to approximate conditions within a mold, such as pressure or the location of a melt flow front. Such kits are designed to amplify meaningful measurements obtained by the external sensor kit so that noise measurements do not prevent the approximation of conditions within a mold. In some embodiments within the scope of the present disclosure, an external sensor kit includes a strain gauge sensor, a coupon, a support bracket, and a hammer. The strain gauge sensor is placed on a surface of the coupon and measures the strain in the coupon.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Inventors: Chow-Chi Huang, Rick Alan Pollard, Gene Michael Altonen
  • Publication number: 20190337209
    Abstract: In order to improve the consistency of molded products as viscosity shifts throughout a run, a controller of an injection molding machine executes a calibration cycle in accordance with a mold cycle. The controller analyzes a plurality of sensed melt pressure values during the calibration cycle to determine one or more calibration metrics. The controller then uses the calibration metrics when executing each mold cycle of the run. More particularly, during each mold cycle of the run, the controller detects a plurality of sensed melt pressures prior to and during a fill phase of the mold cycle and compares the plurality of sensed melt pressures to the one or more calibration metrics to predict cavity pressure for a pack and hold phase of the mold cycle. The controller then adjusts a set point pressure for the pack and hold phase based on the predicted cavity pressure.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 7, 2019
    Inventors: Bryler Collins, Gene Michael Altonen, Chow-Chi Huang, Brandon Michael Birchmeier, Brian Matthew Burns
  • Patent number: 10444092
    Abstract: A strain gauge nozzle adapter that may be placed between a barrel end cap and a nozzle body of an injection molding system, the strain gauge nozzle adapter having a strain gauge pin that measures strain within the strain gauge nozzle adapter for use in approximating conditions within an injection molding system, such as pressure or the location of a melt flow front. The strain gauge nozzle adapter may include a plurality of strain gauge pins. An alternative material insert in the strain gauge nozzle adapter may surround a strain gauge pin to amplify meaningful measurements obtained by the strain gauge pin so that noise measurements do not compromise the accuracy of approximation of conditions within a mold.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: October 15, 2019
    Assignee: IMFLUX INC.
    Inventors: Rick Alan Pollard, Bryan Keith Allen, Chow-Chi Huang, Gene Michael Altonen