An undercut processing mechanism that is installed in a molding die assembly configured to form a molded article having an undercut portion so as to allow demolding of the undercut portion, the undercut processing mechanism comprising: a pushing piece movable in a demolding direction of the molded article; a support element fixed to the pushing piece or formed so as to be integrated with the pushing piece and capable of supporting the undercut portion during movement of the pushing piece; a sliding piece configured to be slidable relative to the pushing piece and to move, in conjunction with movement of the pushing piece, in a direction intersecting the demolding direction of the molded article; and a retaining piece configured to retain the sliding piece such that the sliding piece is slidable.

An ejection device having a pushing device that can be moved in translation along a first axis, an ejection element is translatable along a second axis different from the first axis, and a transfer device connecting the pushing device and the ejection element. The transfer device includes a transmission chain having at least two transmission links which are translatable in a sliding direction. The ejection device further includes an adjustment wedge mounted on the pushing device, the adjustment wedge having an adjustment surface forming an adjustment angle, with the transmission chain being mounted on the adjustment surface.

A method of making semiconductor packages includes providing a first lead frame having a first plurality of semiconductor dies arranged along a first longitudinal axis, each of the first plurality of semiconductor dies having a first number of metal contacts; providing a second lead frame having a second plurality of semiconductor dies arranged along a second longitudinal axis, each of the second plurality of semiconductor dies having a second number of metal contacts, the second number of metal contacts different than the first number of metal contacts; and covering the first plurality of semiconductor dies in a first mold using a common semiconductor die cavity; covering the second plurality of semiconductor dies in a second mold using the common semiconductor die cavity.

A method of making semiconductor packages includes providing a first lead frame having a first plurality of semiconductor dies arranged along a first longitudinal axis, each of the first plurality of semiconductor dies having a first number of metal contacts; providing a second lead frame having a second plurality of semiconductor dies arranged along a second longitudinal axis, each of the second plurality of semiconductor dies having a second number of metal contacts, the second number of metal contacts different than the first number of metal contacts; and covering the first plurality of semiconductor dies in a first mold using a common semiconductor die cavity; covering the second plurality of semiconductor dies in a second mold using the common semiconductor die cavity.

This injection molded article has a body part and a movable part. The body part has a first stopper part and a second stopper part, while the movable part has a movable body and a first rib and a second rib that are formed to protrude at both widthwise end parts of the movable body. A first groove and a second groove that extend in the depth direction perpendicular to the axial direction of a hinge part, are respectively formed between the movable body and the first rib and between the movable body and the second rib.

Disclosed is a method of preparing a flexible deformable photonic crystal material for structural health monitoring, comprising the following steps: washing a grating master template; preparing and assembling a mold; obtaining an assembled mold by printing a three-dimensional mold comprising an upper die and a lower die by use of a 3D printing device and installing the grating master template on the three-dimensional mold; obtaining a polydimethylsiloxane (PDMS) one-dimensional photonic crystal film by replicating a one-dimensional grating structure of a surface of the grating master template by pouring PDMS into the assembled mold; finally, obtaining the PDMS one-dimensional photonic crystal film with a one-dimensional photonic crystal structure on a middle surface and protrusion structures at both ends by demolding, wherein the PDMS one-dimensional photonic crystal film is the flexible deformable photonic crystal material. A mechanochromic photonic crystal film is prepared by using a master template with a photonic crystal structure, a process is simple and easy to operate, a preparation period of a mechanochromic material is greatly shortened, and a preparation cost is reduced.

A method of printing a three-dimensional (3D) object and a support construction for the 3D object includes depositing a model material, layer-by-layer, on a fabrication platform, to print a first portion of the 3D object, and depositing a support material, layer-by-layer on the fabrication platform, to print the support construction, wherein, in a predetermined number of the deposited layers, the model material and the support material are deposited such that a gap is formed between a surface of the first portion of the 3D object and a surface of the support construction.

Provided is a fiber-reinforced composite material shaping device including: core units; a shaping mold having a recessed portion for accommodating the core units; a seal member for sealing a fiber base material in the shaping mold to form a sealed space; an aspiration unit for reducing the pressure in the sealed space; a resin injection unit for injecting a resin material into the sealed space; and moving mechanisms for separating a first shaping surface away from the fiber base material, which contains a resin material that has been shaped by the first shaping surface and cured. Formed on the first shaping surface is a first groove section extending in a predetermined direction. The moving mechanisms move the core units along a predetermined direction in which the first groove section extends, while maintaining a state in which the first shaping surface is in contact with the fiber base material.

A method for the manufacture of a fiber-composite article for a bicycle frame or other bicycle component uses an outer mold configured to define an outer surface of the fiber-composite article and an inner mold configured to define an inner surface of the fiber-composite article. The method comprises: securing in the inner mold a supportive armature for a space-filling mandrel, the mandrel being configured to occupy a space within the inner surface of the fiber-composite article during lay up and curing of the fiber-composite article; forming the mandrel by injection molding a solidifiable fluid into the inner mold, around the armature, the solidifiable fluid being configured to form a solidified, molded material; applying a fiber composition to the mandrel; securing the mandrel with the fiber composition in the outer mold; heating the fiber composition in the outer mold to form the fiber-composite article and concurrently heating the solidified, molded material. In this manner, the fiber composition is compressed into the outer mold due to expansion of the solidified, molded material.

Flexible molds have an elastic membrane supported by modules, arranged next to one another along a horizontal longitudinal axis of the mold. Each module has traction units, each forming a respective group with a respective thrust unit, with the groups arranged opposite one another at a preset distance. Pairs of traction units are arranged opposite one another in a direction perpendicular to the axis, and the respective thrust units thereof are arranged therebetween. The modules hold the membrane with the mold via reinforced eyelets distributed on both edges parallel to the axis. Each traction unit has linear actuators arranged horizontally and another linear actuator arranged vertically, which together enable movement. The membrane is previously deformed according to an approximation of the prior design of a part to be molded, and prestressed according to a mathematical prediction of the deformation thereof after receiving a conglomerate in liquid or plastic state.