Methods, systems, and apparatus, including medium-encoded computer program products, for injection molding warp prediction include: obtaining a mold model and measured shrinkage data for at least one material, predicting an amount of warpage for a part manufactured using the mold by computational simulation of an injection molding process, where the computational simulation uses an internal residual stress model for the part that uses calibrated values for both a coefficient of thermal expansion and an elastic modulus and/or a Poisson's ratio of the at least one material, in at least one direction, for at least thermal stress due to cooling and pressure compensation during and/or after a packing phase of the injection molding process, in accordance with the measured shrinkage data for the at least one material, and providing the amount of warpage predicted for the part manufactured using the mold.

An anti-warping design method for designing a resin molded article on a programmed computer includes dividing the molded article into a plurality of small elements, calculating sensitivity values for at least part of the elements with respect to warpage of the molded article, and displaying a distribution of the sensitivity values.

An injection molding includes: a clamping mechanism (conversion mechanism and toggle mechanism) for moving a fixed platen that retains a fixed die toward a fixed platen that retains a fixed die to bring the fixed die and the movable die into contract, and generating a clamping force therebetween; a drive source (mold opening/closing motor) for driving the clamping mechanism; a clamping force detection unit for detecting the clamping force; an elongation value detection unit for detecting an elongation value indicating the amount of elongation of a tie bar that extends as the clamping force is generated; and an abnormality determination unit for determining an abnormality in the injection molding machine on the basis of the ratio of the elongation value and the clamping force.

A method employing a corrector busing including measuring plastic parts produced by a plastic injection mold, adjusting one or more corrector bushings based on any measured errors in the plastic parts, performing a test production run of plastic parts, measuring the parts produced by the test production run, and determining whether the plastic parts produced by the test production run are within tolerance.

A method is provided for facilitating a vacuum bagging operation during fabrication of a composite laminate. The method comprises applying a vacuum bag over a composite part to fabricate the composite laminate from the composite part. The method also comprises drawing a vacuum in the vacuum bag, and monitoring one or more portions of the vacuum bag for strain within the vacuum bag when the vacuum is drawn. The method further comprises manipulating the vacuum bag to even out strain within the vacuum bag.

A resin molded article includes a main body or a plate portion formed in a substantially rectangular plate shape, and at least one rib that is integrally raised from the plate portion. The plate portion has a pair of long sides facing each of her, and a pair of short sides facing each other. The short sides are shorter than the long sides. Each of at least one rib is formed along at least one of the two long sides such that the rib includes, at least, an area over the center of the long side concerned. The height of the rib is set to be lowest at opposite ends thereof.

The application belongs to the technical field of automobile plated part, and in particular relates to an automobile, an automobile plated part, an automobile plated part mold and a manufacturing method thereof. The method for manufacturing automobile plated part mold comprises the steps of: establishing a first simulation model of the automobile plated part mold based on a set shape of the substrate of the automobile plated part; using the first simulation model to simulate injection process of the substrate to obtain a first simulation substrate; performing at least one modification processing on the first simulation model, so that a second simulation model thus obtained satisfies the following requirements: using the second simulation model to simulate the injection process of the substrate to obtain a second simulation substrate conforming to the set shape; manufacturing the automobile plated mold according to the second simulation model.

A device, a system and a method for modeling fiber orientation distribution related to an injection molding object are provided. The device of the system obtains an aspect ratio of a non-cylindrical fiber, and inputs the aspect ratio and fiber data of the non-cylindrical fiber into an orientation distribution generation model for outputting a non-cylindrical fiber orientation distribution. The device determines whether the non-cylindrical fiber orientation distribution corresponds to a predetermined orientation distribution.

A method is provided for facilitating a vacuum bagging operation during fabrication of a composite laminate. The method comprises applying a vacuum bag over a composite part to fabricate the composite laminate from the composite part. The method also comprises drawing a vacuum in the vacuum bag, and monitoring one or more portions of the vacuum bag for strain within the vacuum bag when the vacuum is drawn. The method further comprises manipulating the vacuum bag to even out strain within the vacuum bag.

An anti-warping design method for designing a resin molded article on a programmed computer includes dividing the molded article into a plurality of small elements, calculating sensitivity values for at least part of the elements with respect to warpage of the molded article, and displaying a distribution of the sensitivity values.