A molding apparatus includes a mold comprising a stationary outer mold with a substantially tubular mold cavity, a moveable end mold with an end mold cavity alignable with the tubular mold cavity, and a stationary elongated mold core with a fluid channel therethrough, the mold core extending through the tubular cavity into the end mold cavity. A method of using the apparatus includes injecting a molding material at a material flow rate into the mold, moving the end mold at a speed in a linear direction from a first position to a second position, supplying a fluid at a fluid flow rate to the fluid channel, and varying at least one of the material flow rate, the end mold speed and the fluid flow rate as the end mold moves from the first position to the second position.

A compression collar is manufactured for use in reinforcing an interference fit between an end of a pipe and a fitting. A precursor form is injection molded using a cold-expansion material. The precursor form has a tubular body with an initially closed axial end and a bore that is initially blind formed in the other axial end. Material is removed from the initially closed axial end of the tubular body of the precursor form to form an opening in the initially closed axial end that connects to the bore thereby forming the compression collar. The opening has an inner periphery with a profile in axial cross section that is different than any profile in axial cross section of an inner periphery of the bore. The collar formed may lack knitlines and may include tabs formed during the removal step which help to position the collar on a pipe.

A hot runner mold includes a hot runner mold body portion that is fixed to a fixing plate and supplies a molten resin received from a resin inlet to an injection mold, a nozzle receiving portion that is disposed to be inclined with respect to a position orthogonal to the resin inlet of the hot runner mold body portion and is coaxially connected to a nozzle of an injection device that supplies the molten resin, a relay portion that has a resin flow path having a bent portion therein and guides the molten resin from the nozzle receiving portion to the resin inlet, and a regulating portion that is fixed to the fixing plate and regulates movement of the nozzle receiving portion or the relay portion with respect to the hot runner mold body portion.

An injection mold and an injection molding method are provided. The injection mold includes a housing and a cover. The housing is provided with a mold cavity. The mold cavity is configured to accommodate a power module. The cover is provided with a plurality of vias. The cover is detachably connected to the housing. The cover is located in the mold cavity and locates the power module jointly with the housing. The plurality of vias are configured to match a plurality of pins of the power module. In this application, the cover is disposed, and the cover is provided with the vias for pins to pass through. By using covers with different arrangement manners of vias, a same set of injection molds can be compatible with power modules of a same series that have different locations of pins. Arrangement manners of vias on different covers are different.

An injection mold and an injection molding method are provided. The injection mold includes a housing and a cover. The housing is provided with a mold cavity. The mold cavity is configured to accommodate a power module. The cover is provided with a plurality of vias. The cover is detachably connected to the housing. The cover is located in the mold cavity and locates the power module jointly with the housing. The plurality of vias are configured to match a plurality of pins of the power module. In this application, the cover is disposed, and the cover is provided with the vias for pins to pass through. By using covers with different arrangement manners of vias, a same set of injection molds can be compatible with power modules of a same series that have different locations of pins. Arrangement manners of vias on different covers are different.

A length-adjustable steering shaft for a motor vehicle may include a hollow outer shaft with an unround inner cross section, in which an inner shaft is received in a torque-locked and axially movable manner. A profiled sleeve may be arranged between the inner shaft and the outer shaft, and the profiled sleeve may have a fastening portion connected to the inner shaft. The inner shaft may be configured at least in part as a hollow shaft that has an interior that is open towards the end that is inserted into the outer shaft. To reduce the outlay in terms of production and assembly, the fastening portion may extend from the end into the interior of the inner shaft and is connected to an inner surface of the interior.

An injection molding apparatus including a stack mold tool and a ball screw centering device. The stack mold tool including a stationary mold block, a center mold block movable relative to the stationary mold block, and a distal mold block movable relative to the center mold block. The ball screw centering device includes a center bearing housing connected to the center mold block, a rotatable shaft having a first side ball track and a second side ball track, a first nut coupled to the stationary mold block, the first nut including a track portion cooperating with the first side ball track to define a passage for a first set of ball bearings, and a second nut coupled to the distal mold block, the first nut including a track portion cooperating with the second side ball track to define a passage for a second set of ball bearings.

A shock absorber, including: a first cylindrical body; a second cylindrical body surrounding an outer peripheral surface of the first cylindrical body and provided movably in a direction of an axis of the first cylindrical body with respect to the first cylindrical body; a spring provided between the outer peripheral surface of the first cylindrical body and an inner peripheral surface of the second cylindrical body and applying a force in a direction of separating the first cylindrical body and the second cylindrical body; and a spring seat portion that is a cylindrical body provided between the outer peripheral surface of the first cylindrical body and the inner peripheral surface of the second cylindrical body and supporting an end portion of the spring in the axis direction, the spring seat portion being made of resin and being arranged movably in a direction intersecting the axis direction.

A method for the design, manufacture, and assembly of modular lattice structures composed of cuboctahedron unit cells.

The masterbatch contains a black pigment and a masterbatch thermoplastic resin, the masterbatch satisfying the following conditions: (Conditions) when a resin plate is produced by kneading 100 parts by weight of polypropylene having a melt flow rate of 30 g/10 min (JIS K7210:1999) and a density of 0.9 g/cm.sup.3 (JIS K7112:1999) with respect to 3 parts by weight of the masterbatch and subjecting the mixture to injection molding using a mold polished by a coated abrasive with a particle size of #800 (JIS R6001:1998), a* values and b* values of a surface of the resin plate in the L*a*b* color system satisfy specific conditions.