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公开(公告)号：US20210221041A1
公开(公告)日：2021-07-22
申请号：US17248294
申请日：2021-01-19
发明人： Kakeru SASAGAWA
摘要： An inspection method for an injection molding device includes: a first step of acquiring a first detection value from a sensor using a test mold having the sensor, the sensor measuring a temperature or pressure of a molten material injected from a first injection molding device into a cavity section demarcated by a fixed mold and a moving mold; a second step of injecting a molten material from a second injection molding device into the cavity section and acquiring a second detection value from the sensor; and a third step of performing an inspection using the first detection value and the second detection value.
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公开(公告)号：US20210162643A1
公开(公告)日：2021-06-03
申请号：US17104193
申请日：2020-11-25
申请人： ENGEL AUSTRIA GmbH
摘要： A method of influencing a backpressure length and/or a screw return speed in an axially extending plasticizing cylinder of a plasticizing unit for an injection moulding machine including a plasticizing screw arranged displaceably and rotatably in a cylinder bore of the plasticizing cylinder. Metering of plastic granulate fed to the plasticizing unit is carried out in dependence on the desired backpressure length in the plasticizing unit, and the plasticizing unit is operated in underfed mode.
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公开(公告)号：US20210114272A1
公开(公告)日：2021-04-22
申请号：US17061861
申请日：2020-10-02
申请人： Niigon Machines Ltd.
发明人： Carsten Link , Erik Strohm , Luke Osmokrovic , Andrew Serles
摘要： A method for controlling an injection cycle of an injection molding machine incudes advancing an injection screw axially forward toward an injection nozzle from a shot-size position to an injection position to inject melt from a shot chamber into a hot runner of a mold and from the hot runner to fill cavities of the mold. Then the injection screw is retracted away from the nozzle, from the injection position to a decompression position axially rearward of the shot-size position, to relieve melt pressure in the hot runner. Then the screw is advanced toward the nozzle from the decompression position to an intermediate position axially intermediate the injection position and the shot-size position. The method then includes rotating the screw to re-fill the shot chamber with melt and urge the screw to retract from the intermediate position to the shot-size position.
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公开(公告)号：US20210107195A1
公开(公告)日：2021-04-15
申请号：US17070406
申请日：2020-10-14
申请人： ENGEL AUSTRIA GmbH
摘要： A method for determining positions of a real moulding material front during a process to be carried out with a moulding machine, wherein a simulation progression (SV) of a variable characteristic of the process is calculated, positions of a simulated moulding material front are determined from the simulation, the real process is carried out, and at least one measurement progression (MV) of the at least one characteristic variable is measured directly or indirectly, a transformation is chosen, which has at least one parameter (ΔV, kp, Vunknown), the transformation is applied to the at least one simulation progression (SV), with the result that a transformed simulation progression (tSV) is formed, and a parameter value is determined for the parameter (ΔV, kp, Vunknown) such that a deviation between the measurement progression (MV) and the transformed simulation progression (tSV) is minimized according to a predetermined error measure or according to an operator input.
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公开(公告)号：US20210094212A1
公开(公告)日：2021-04-01
申请号：US17026001
申请日：2020-09-18
申请人： FANUC CORPORATION
发明人： Atsushi HORIUCHI
摘要： A reverse rotation condition estimating apparatus includes: a learning model storage unit for storing a learning model for estimating reverse rotation conditions; an acquisition unit for acquiring a predetermined time series data set supplied from an injection molding machine at least during a pressure reducing step; and an estimation unit for estimating the reverse rotation conditions using the predetermined time series data set acquired by the acquisition unit and the learning model stored in the learning model storage unit.
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公开(公告)号：US10960592B2
公开(公告)日：2021-03-30
申请号：US16587858
申请日：2019-09-30
摘要： 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.
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公开(公告)号：US20210078227A1
公开(公告)日：2021-03-18
申请号：US17018057
申请日：2020-09-11
申请人： FANUC CORPORATION
发明人： Atsushi Horiuchi
摘要： A control device for an injection molding machine that performs a metering of a resin while the resin is being melted inside a cylinder, includes a pressure acquisition unit that acquires a pressure of the resin, a reverse rotation control unit that causes a screw to be rotated in reverse so as to reduce the pressure of the resin, after the screw has been moved rearward to a predetermined metering position, a judgment unit that judges whether or not the pressure of the resin has reached a predetermined rearward movement initiation pressure, after the reverse rotation of the screw is started, and a rearward movement control unit which causes the screw to be moved rearward, in the case it is judged that the pressure of the resin has reached the rearward movement initiation pressure.
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公开(公告)号：US20210069954A1
公开(公告)日：2021-03-11
申请号：US16624934
申请日：2019-05-13
申请人： INGLASS S.p.A.
发明人： Maurizio BAZZO
摘要： A method for injection molding of plastic material by means of at least one injector whose pin valve can be displaced between a fully closed position and a maximum controlled fashion according to a position and speed of the pin valve. During displacement of the pin valve from the fully closed position to the maximum open position, and/or vice versa, the pin valve is stopped in intermediate positions and the displacement speed thereof is uniform and constant. An initial opening step at maximum speed and one or more steps of inversion of the motion of the pin valve can be provided for.
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公开(公告)号：US20210023748A1
公开(公告)日：2021-01-28
申请号：US17061591
申请日：2020-10-02
发明人： Ulrich GROSSER , Jan HELMIG , Thorsten SCHULZ , Thomas THULKE , Lucia WINKLER
摘要： The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.
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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.
发明人： William Francis Lawless, III , Chow-Chi Huang , Gene Michael Altonen , Brandon Michael Birchmeier
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.
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