METHOD OF INJECTION MOLDING WITH DOWN CAVITY DETECTION

    公开(公告)号:US20210387393A1

    公开(公告)日:2021-12-16

    申请号:US17324299

    申请日:2021-05-19

    申请人: IMFLUX INC.

    摘要: A method of detecting and compensating for a non-operational mold cavity in an injection molding apparatus having a plurality of mold cavities and an injection molding screw or ram includes injecting, via the injection molding screw or ram, a molten thermoplastic material into the plurality of mold cavities. The method includes measuring a first process parameter of the injection molding apparatus at a pre-determined time during or after the injecting. The method also includes determining, based on the first process parameter, whether one or more mold cavities of the plurality of mold cavities are non-operational. Then, when it is determined that one or more mold cavities are non-operational, the method includes automatically adjusting the first process parameter or a second process parameter of the injection molding apparatus.

    Method for controlling valve gates using one or more strain gauges

    公开(公告)号:US10894349B2

    公开(公告)日:2021-01-19

    申请号:US15816457

    申请日:2017-11-17

    申请人: IMFLUX INC.

    摘要: 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.

    INDEPENDENT STARTUP MODE FOR INJECTION MOLDING

    公开(公告)号:US20210387391A1

    公开(公告)日:2021-12-16

    申请号:US17326538

    申请日:2021-05-21

    申请人: IMFLUX INC.

    IPC分类号: B29C45/76 B29C45/77

    摘要: 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 injecting a molten polymer into the mold cavity according to a startup profile. A first sensor is used to measure at least one variable during the startup profile. The startup profile is terminated upon the at least one variable exceeding a first threshold. The molten polymer is then injected into the mold cavity according to a primary injection profile.

    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

    申请人: IMFLUX INC.

    IPC分类号: B29C45/77 B29C45/03

    摘要: 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

    申请人: IMFLUX INC.

    IPC分类号: B29C45/77

    摘要: 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.