A method produces an elastically deformable molded part having a number of undercut molded-part regions, by use of a mold. To provide a technique which makes it possible to produce individual molded parts which are elastically deformable and have undercut regions from soft materials in a precise and cost-effective manner, a method is performed in which a molded-part material is introduced into the mold. The mold has a shaping contour with a number of special contour regions, which are configured for shaping the number of undercut molded-part regions of the molded part, and in which the molded part is removed from the mold by at least partially deforming the mold together with the molded part therein in such a way that the molded part elastically deforms and the mold at least partially, but in any event to the extent of the special contour regions, breaks up.

A blow moulding machine for blow moulding a container having an integrally formed handle; said container blow moulded from a previously injection moulded preform; said preform comprising a body portion and said integrally formed handle; said machine including a preform loading station at which said preform is oriented by a preform orienting apparatus.

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.

A mold for injection molding of a plastic cap having protruding internal portions is provided. The mold has a male mold and a female mold that form a molding cavity. The male mold consists of a mobile portion fitted above a fixed portion, the mobile portion being rotatable around the fixed portion and provided with grooves having an inclined lateral surface that defines an outlet ramp. A method for producing a plastic cap by use of the mold is also provided. The method includes rotating the mobile portion of the male mold with respect to the plastic cap until flat walls of the mobile portion are located in the region of protruding portions of the plastic cap, thereby causing a slight circumferential expansion of the skirt of the plastic cap.

A device for securing and/or releasing injection moulds for plastics injection moulding includes a slide retainer that is located in a receiving mould region, can be pushed into predefined, complementary regions of a corresponding sliding mould region and comprises a roller which is rotatably mounted in a housing and over which the sliding mould region can roll. A spring-loaded pressure piece comprises the housing and a slide retainer spring that presses against the housing, for engaging in an opening in the sliding mould region. The housing has a pre-loading projection in a peripheral region for pre-loading by means of the slide retainer spring. One or more fixing screws run through the housing and is/are screwed into a complementary opening in the receiving mould region. A central lead-through means is provided and each of the one or more fixing screws runs through one through-opening of the lead-through means.

A undercut processing mechanism includes: a sliding piece having a molding core for molding an undercut portion; a holder having a guide for guiding the sliding piece so that a molding core is detached from the undercut portion; and a retaining piece slidably accommodated in the holder and slidably engaged with the sliding piece. One of the holders and the retaining piece can advance/retract relative to the other thereof. The retaining piece has a first engagement element and a second engagement element to be engaged with the sliding piece. The sliding piece is guided via the first engagement element and the second engagement element so that the molding core is detached from the undercut portion and moves away from the molded product.

A undercut processing mechanism includes: a sliding piece having a molding core for molding an undercut portion; a holder having a guide for guiding the sliding piece so that a molding core is detached from the undercut portion; and a retaining piece slidably accommodated in the holder and slidably engaged with the sliding piece. One of the holders and the retaining piece can advance/retract relative to the other thereof. The retaining piece has a first engagement element and a second engagement element to be engaged with the sliding piece. The sliding piece is guided via the first engagement element and the second engagement element so that the molding core is detached from the undercut portion and moves away from the molded product.

Provided is a molding method of a sealing cover, realized by setting up a sealing cover mold, the mold includes a cavity and a core group arranged in the cavity, including setting up a first core and a second core, the mold opening direction of the first core and the second core are not parallel. The present application does not need a process hole to perform the injection molding of the sealing cover with a fastening structure, whose sealing is also better.

What is presented is a method of forming a closure with a sealing gasket in an injection molding machine that has a center rotating cube. The center rotating cube comprises a plurality of mold back halves each comprising cores and a thread unscrewing mechanism. Each core is shaped to form a closure that has a thread and an anti-rotation feature. The method comprises the steps of forming a closure with a through hole, rotating the core to create a gap between the formed closure and the core, and injecting a compressible material through the through hole and into the gap to form a sealing gasket.

An injection molded article includes: (a) an article first portion having internal threading extending helically about an article axis, the threading configured to be formed by a thread mold in a mold core; and (b) an article second portion spaced radially apart from the article first portion and connected to the article first portion by a connection portion. The article second portion has at least one ejection-assist rib configured to be formed by at least one rib mold feature in the mold core. The ejection-assist rib defines a helical slide surface extending helically about the article axis. During an initial unscrewing rotation of the molded article relative to the mold core, the rib mold feature of the mold core bears against the slide surface of the ejection-assist rib to urge the article second portion axially away from the mold core during ejection of the molded article from the mold core.