Closed Loop Control for Injection Molding Processes

    公开(公告)号:US20200078998A1

    公开(公告)日:2020-03-12

    申请号:US16562592

    申请日:2019-09-06

    Applicant: IMFLUX INC.

    Abstract: Systems and approaches for controlling an injection molding machine having a mold forming a mold cavity and being controlled according to an injection cycle include extruding a molten polymer according to an extrusion profile and measuring at least one variable during the extrusion profile with a first sensor. At least one extrusion operational parameter is adjusted based on the measured variable. The extrusion profile is terminated upon the molten polymer exceeding a first threshold, and the molten polymer is injected into the mold cavity according to an injection profile via a screw that moves from a first position to a second position. Upon completion of the injection profile, a recovery profile commences in which the screw is moved to the first position.

    Systems and Approaches for Controlling an Injection Molding Machine

    公开(公告)号:US20190389111A1

    公开(公告)日:2019-12-26

    申请号:US16437160

    申请日:2019-06-11

    Applicant: IMFLUX INC.

    Abstract: Systems and approaches for controlling an injection molding machine having a mold forming a mold cavity and being controlled according to an injection cycle include obtaining a pattern for the injection cycle, operating the injection molding machine to inject a molten material into the mold cavity, and measuring a cavity pressure value of the mold cavity during the mold cycle. Upon measuring a nominal cavity pressure value, a pattern recognition portion of the injection cycle that is at least partially dependent on the obtained pattern commences where a driving force being exerted on the molten material is adjusted such that the measured cavity pressure matches the obtained pattern for the injection cycle.

    SYSTEMS AND METHODS FOR CONTROLLING INJECTION MOLDING USING PREDICTED CAVITY PRESSURE

    公开(公告)号:US20190337209A1

    公开(公告)日:2019-11-07

    申请号:US16401777

    申请日:2019-05-02

    Applicant: IMFLUX INC.

    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.

    Porous insert for nozzle of an injection molding system

    公开(公告)号:US10226885B2

    公开(公告)日:2019-03-12

    申请号:US15448195

    申请日:2017-03-02

    Applicant: IMFLUX INC.

    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.

    METHOD AND APPARATUS FOR MOLDING AN OBJECT ACCORDING TO A COMPUTATIONAL MODEL

    公开(公告)号:US20190005164A1

    公开(公告)日:2019-01-03

    申请号:US15929028

    申请日:2018-06-29

    Applicant: IMFLUX INC.

    Abstract: A method of molding includes providing a physical mold having a plurality of physical sensors at sensor locations and providing pressure, volume, and temperature curves for a desired flow rate profile of an injection material at the sensor locations. The method also includes injecting the injection material into the physical mold at a physical flow rate corresponding to the desired flow rate profile and monitoring pressure, volume, and temperature of the injection material by the physical sensors. The method further includes controlling the physical flow rate when the monitored pressure, volume, or temperature of the injection material deviates from the pressure, volume, and temperature curves.

    Injection Molding of Crosslinking Polymers Using Strain Data

    公开(公告)号:US20180370108A1

    公开(公告)日:2018-12-27

    申请号:US15992855

    申请日:2018-05-30

    Applicant: IMFLUX INC.

    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.

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