An ejector for a molding machine includes an ejector plate and an ejector rod. The ejector plate has an opening and a distance block attached to the ejector plate. The ejector rod includes a first and a second end portion. The first end portion is in the opening of the ejector plate. The ejector rod has a first initial position relative to the ejector plate. The first end portion of the ejector rod is pushed in the direction of the ejector plate by a first force applied to the second end portion of the ejector rod. The ejector also includes a spring around the first end portion of the ejector rod and coupled to the ejector plate. The spring is configured to provide a second force to the ejector plate upon application of the first force to the second end portion of the ejector rod. There is always a gap between the first end portion of the ejector rod and the ejector plate.

An injection mold includes an upper mold core, an upper mold plate, a sprue bushing and an upper mold fixing plate. The sprue bushing is completely accommodated in the upper mold plate and the upper mold core, the sprue bushing defining a runner therein. The sprue bushing includes a mounting part and an extending part extending from the mounting part, the mounting part is received in the upper mold plate, the extending part is disposed through the upper mold core, and the runner runs through the mounting part and the extending part. The upper mold fixing plate is piled on and fixed to the upper mold plate, the upper mold fixing plate is provided with a through hole communicated with the runner, the upper mold fixing plate includes a flange extending inwardly from a side wall of the through hole, the flange abuts against the mounting part.

A device for demolding parts includes a slider for housing a figure insert for the molding of a negative of the part to be molded. The slider is associated with a push rod, which can move the slider to an ejection position of a part to be molded. The device also includes a gas cylinder for driving the displacement of the push rod. The device eliminates an inclined guide and a safety wedge, saving a great deal of work and focusing all the machining only on a punch plate.

A projection mechanism of a molding die configured to mold a molded article by a fixed-side die and a movable-side die, the projection mechanism including: a projection pin using a reaction force of a spring as a drive source; and a first spring and a second spring configured to project the projection pin, wherein the first spring has a maximum reaction force in a die clamping state, and projects the projection pin while gradually reducing the reaction force in a projection process, and the second spring projects the projection pin with a constant reaction force while projecting the projection pin from the die clamping state, where stop of movement of the second projection pin during the projection process causes compression of the second spring to increase the reaction force of the second spring, thereby energizing the projection pin to further project the projection pin.

A pyrotechnical connecting interface of a pyrotechnical vehicle safety device comprises a socket which includes a housing with a plug-in port for accepting a plug, the pyrotechnical connecting interface further comprising pins which end in the plug-in port and via which electricity for activating a pyrotechnical charge can flow, the housing being an injection-molded housing and being provided with a peripheral wall which surrounds end portions of the pins at a distance therefrom and which ends in an end face on the side facing the plug; three radial undercuts for interlocking engagement with three associated latching fingers that are part of the plug are formed on the inner face of the peripheral wall, are spaced apart from each other in the peripheral direction, are entirely closed axially as well as radially outward, and are made in an injection-molding process.

An anti-fogging laminate including: a substrate; and an anti-fogging layer on the substrate where a surface of the anti-fogging layer is flat, wherein the anti-fogging layer includes a hydrophilic molecular structure; and wherein the anti-fogging layer has an elastic recovery of 90% or more, a coefficient of dynamic friction of 0.40 or less, and an average thickness of 4 m or more.

A mold for manufacturing a fan including a fixed portion and a plurality of blades connected to the fixed portion. Each of the blades has a bottom surface. The mold includes a body and an ejection structure. The body has a cavity with a shape matched with a shape of the fan. The ejection structure includes a plurality of ejection pins radially arranged. Each of the ejection pins has a working surface. Wherein a sum area of the working surfaces of the ejection pins is greater than or equal to 40% of a sum area of the bottom surfaces of the blades.

An assembly for injection molding eyeglass frames is provided including a mold having a mold interior and a mold insert located within the mold interior. The insert has an insert body that seals the mold interior and forms a mold channel when the mold is closed, and an insert edge that extends into the mold channel. The insert edge has a first side, a second side, and a boundary, and the first side follows a surface trajectory of a corresponding side of the insert body, and the second side tapers towards the first side. Also provided is an insert for use in the assembly and glasses formed using the assembly.

A tool for the injection molding of plastic molded parts has two tool halves movable in relation to each other, one of which has a mold plate carrying at least one mold insert with a multiplicity of mold cavities, or a mold plate with a mold insert support platen, which carries at least one mold insert with a multiplicity of mold cavities. The mold cavities are designed to form molded parts in conjunction with complementary cavities present on the second of the tool halves. The mold insert of each mold cavity is assigned a slide, which is arranged movably over or in a cavity-side surface of the mold insert. The slide has at least one guide element in engagement with a counterpart guide element in the mold insert. A connection bolt extends from the slide in the direction of the mold plate or of the mold insert support platen and is guided in a guide groove of a rotary ring. A plurality of connection bolts of a plurality of slides are arranged circumferentially along the circumference of the rotary ring, distributed in a corresponding number of guide grooves, and the rotary ring is connected to a drive ring arranged on the mold plate or the mold insert support platen.

The device for demoulding negatives in thermoplastic injection moulds comprises an ejector (1) provided on one of the ends thereof with a figure insert (2) with a profile complementary to the part that is to be moulded, wherein said ejector (1) comprises an outer tube (11) housing an inner cooling tube (12), which cools said figure insert (2).

It allows for a device to be provided for demoulding negatives in thermoplastic injection moulds which enables the part to be obtained to be cooled, the cooling circuit reaching the figure area of the mould.