An object of the present invention is to provide a technique by which, when producing a resin molded article using an insert member having low pressure resistance, molding can be easily performed, and deformation of the insert member can be suppressed. A method for producing a resin molded article of the present invention, the method includes the steps of disposing an insert member in a cavity of a mold; performing injection of molten resin into the cavity; terminating the injection on and after the molten resin reaches an overflow portion in the cavity and before the molten resin fills the overflow portion; and separating resin in the overflow portion.

A shaping machine or a handling apparatus for a shaping machine includes at least one measuring device for measuring the spacing of two selected points of the shaping machine or the handling apparatus. Furthermore, the at least one measuring device has at least one piezoresistive micromechanical sensor.

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, V.sub.unknown), 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, V.sub.unknown) 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.

A control device for an injection molding machine is equipped with a pressure acquisition unit configured to acquire a resin pressure, a pressure reduction control unit configured to, after the screw has reached a predetermined metering position, reduce the resin pressure to a target pressure by performing at least one of reverse rotation and sucking back of the screw, and a standby pressure control unit configured to, after the resin pressure has reached the target pressure, keep the resin pressure within a predetermined range by causing the screw to be rotated in a state in which a position of the screw in an axial direction of the cylinder is maintained.

A measuring arrangement for a shaping machine includes a measuring diaphragm deformable by a force action, a measuring device for metrological detection of a deformation of the measuring diaphragm with the output of a measurement signal, and an evaluation device connected to the measuring device. The evaluation device, in the course of a first calibration, can convert the measurement signal originating from the deformation of the measuring diaphragm with a force from a first force value range into a first output signal, and the first output signal is in a previously defined value range. The evaluation device, in the course of a second calibration, can convert the measurement signal originating from the deformation of the measuring diaphragm with a force from a second force value range differing from the first force value range into a second output signal, and the second output signal is in the previously defined value range.

A diagnostic apparatus includes a control unit configured to control a diagnostic operation for driving a belt, a first tension calculation unit configured to perform, based on data obtained from the diagnostic operation, a calculation to estimate a first belt tension value that is a tension value of the belt when the belt is not worn, a second tension calculation unit configured to calculate a second belt tension value in a case where a tension reduction factor of the belt and a wear factor of the belt are included, and a third tension calculation unit configured to calculate the degree of wear of the belt based on the first belt tension value and the second belt tension value. Accordingly, the diagnostic apparatus can support estimation of the degree of wear of a belt or abnormality diagnosis.

A mold clamping device includes at least two mold platens and a plurality of rod-shaped members connecting two of the mold platens. An offset load detector is provided for at least one of the rod-shaped members at a connection portion between the at least one of the rod-shaped members and at least one of the mold platens. The offset load detector is configured to detect loads at two or more different detection positions, respectively, in a circumferential direction of the at least one of the rod-shaped members.

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.

An injection molding system according to an aspect of the present disclosure is for performing insert molding, and includes: an opening-closing mechanism configured to open and close a pair of molds; an injection device configured to inject a resin into a space that is formed between the pair of molds when the pair of molds has been closed; and a positioning mechanism having a holding member configured to hold an insert part, the positioning mechanism configured to position the insert part between the pair of molds, and to cause the holding member to continue holding the insert part between the pair of molds even after the opening-closing mechanism starts to operate to close the pair of molds.

A mold clamping device includes two mold platens; a ball screw mechanism connecting the mold platens to each other, the ball screw mechanism being provided with an axial force detector configured to detect an axial force acting on the ball screw mechanism; a servo motor provided on the ball screw mechanism and configured to drive the ball screw mechanism; and a control device configured to: monitor the axial force detected by the axial force detector during injection; and based on detecting an axial force increase, the axial force increase being an increase in the axial force, perform a mold clamping force increase control including driving the servo motor to increase a mold clamping force for tightening the ball screw mechanism.