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    INJECTION MOLDING OF CROSSLINKING POLYMERS USING STRAIN DATA
    11.
    发明申请
    INJECTION MOLDING OF CROSSLINKING POLYMERS USING STRAIN DATA 有权

    公开(公告)号：US20210268705A1

    公开(公告)日：2021-09-02

    申请号：US17321908

    申请日：2021-05-17

    Applicant: IMFLUX INC.

    Inventor： William Francis Lawless, III ,  Rick Alan Pollard ,  Gene Michael Altonen ,  Chow-Chi Huang

    IPC: B29C45/76 ,  B29C45/00 ,  B29C45/77

    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.

    Method for controlling valve gates using one or more strain gauges
    12.
    发明授权
    Method for controlling valve gates using one or more strain gauges 有权

    公开(公告)号：US10894349B2

    公开(公告)日：2021-01-19

    申请号：US15816457

    申请日：2017-11-17

    Applicant: IMFLUX INC.

    Inventor： William Francis Lawless, III ,  Chow-Chi Huang ,  Gene Michael Altonen ,  Brandon Michael Birchmeier

    IPC: B29C45/76 ,  B29C45/77 ,  B29C45/00 ,  B29C45/28

    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.

    METHODS FOR CONTROLLING INJECTION MOLDING PROCESSES BASED ON ACTUAL PLASTIC MELT PRESSURE OR CAVITY PRESSURE
    13.
    发明申请
    METHODS FOR CONTROLLING INJECTION MOLDING PROCESSES BASED ON ACTUAL PLASTIC MELT PRESSURE OR CAVITY PRESSURE 审中-公开

    公开(公告)号：US20200086542A1

    公开(公告)日：2020-03-19

    申请号：US16562530

    申请日：2019-09-06

    Applicant: IMFLUX INC.

    Inventor： Bryler Collins ,  William Francis Lawless, III ,  Gene Michael Altonen ,  Chow-Chi Huang

    IPC: B29C45/77

    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.

    SYSTEMS AND METHODS FOR NORMALIZING PID CONTROL ACROSS INJECTION MOLDING MACHINES
    19.
    发明申请
    SYSTEMS AND METHODS FOR NORMALIZING PID CONTROL ACROSS INJECTION MOLDING MACHINES 有权

    公开(公告)号：US20220332029A1

    公开(公告)日：2022-10-20

    申请号：US17856238

    申请日：2022-07-01

    Applicant: IMFLUX INC.

    Inventor： Gene Michael Altonen ,  Brian Matthew Burns

    IPC: B29C45/77 ,  B29C45/78 ,  B29C45/76

    Abstract: In order to reduce oscillations in process variables of an injection molding process, an injection molding machine may be operatively connected to a model database that stores models of injection molding machines and molds. A tuning controller may set initial gain values of a variable-gain proportional-integral-derivative (PID) controller. To set the initial gains, the tuning controller may be configured to obtain, from the model database, a model for a first and second injection molding machines and a model for a mold. The tuning controller may analyze the models to determine a correlation between injection molding machine parameters and mold cycle performance for the mold. Accordingly, the tuning controller may apply the correlation to determine an initial gain value for a least one of the first, second, and third gains of the PID controller. The tuning controller may then set the initial gain values for the PID controller.

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