A hot runner nozzle for the lateral gating of plastic components has a nozzle body and a pressure lid. Tip elements are arranged between the nozzle body and the pressure lid, which are each inserted into a recess of the nozzle body and are each penetrated by a movable closure needle having a tip, which in at least one operating position protrudes in each case over an outer circumferential edge of the nozzle body. The closure needles each include, on their ends facing away from the tip, a coupling means, which is coupled to a drive means for moving the closure needles. The tip elements are supported on their side facing away from the respective tip of the closure needles on a buttress element inserted between the nozzle body and the pressure lid.

An injection apparatus to mold a combined member with excellent performance to a constant-velocity joint boot to seal constant-velocity universal joints. The constant-velocity universal joints are used for smooth operation of a drive shaft which transfers driving power from a differential gear of a vehicle to a hub on which a tire is mounted. An injection method of the combined member of the constant-velocity joint boot. A constant-velocity joint boot manufactured by the injection method of the combined member.

A method and apparatus for equalizing gate pressure of a hot runner nozzle are disclosed. The nozzle includes a nozzle housing defining a primary melt channel, a first nozzle tip having a first secondary melt channel in fluid communication with the primary melt channel, a second nozzle tip having a second secondary melt channel in fluid communication with the primary melt channel, and a valve disposed in the primary melt channel for selectively opening and closing a downstream end of the primary melt channel to control a flow of melt to the first and second secondary melt channels. In some embodiments, the valve is configured to selectively open when a pressure of the melt reaches a threshold peak pressure. In some embodiments, the valve includes a valve stem that cooperates with the primary melt channel to block a flow of melt therefrom until the threshold peak pressure is established.

To provide a synthetic resin thrust plate having usable plane accuracy while eliminating correction of the plane shape thereof with a hot-plate press and a method for manufacturing the same. A synthetic resin thrust plate 1 is a hollow disc-shaped, synthetic resin thrust plate having a plurality of radial grooves 2 and 3 at equiangular intervals in terms of a disc central angle on both thrust faces 1a and 1b, respectively. The grooves 2 on one thrust face 1a and the grooves 3 on another thrust face 1b are the same in number. The grooves 2 on the one thrust face 1a and the grooves 3 on the other thrust face 1b are arranged so as not to overlap with each other in a circumferential direction. In particular, the grooves 2 on the one thrust face 1a and the grooves 3 on the other thrust face 1b are arranged in a staggered manner so as to have an angular deviation of of an angular interval between the grooves adjacent to each other on the same thrust face in terms of the disc central angle.

An injection apparatus to mold a combined member with excellent performance to a constant-velocity joint boot to seal constant-velocity universal joints. The constant-velocity universal joints are used for smooth operation of a drive shaft which transfers driving power from a differential gear of a vehicle to a hub on which a tire is mounted. An injection method of the combined member of the constant-velocity joint boot. A constant-velocity joint boot manufactured by the injection method of the combined member.

A method and apparatus for equalizing gate pressure of a hot runner nozzle are disclosed. The nozzle includes a nozzle housing defining a primary melt channel, a first nozzle tip having a first secondary melt channel in fluid communication with the primary melt channel, a second nozzle tip having a second secondary melt channel in fluid communication 5 with the primary melt channel, and a valve disposed in the primary melt channel for selectively opening and closing a downstream end of the primary melt channel to control a flow of melt to the first and second secondary melt channels. In some embodiments, the valve is configured to selectively open when a pressure of the melt reaches a threshold peak pressure. In some embodiments, the 10 valve includes a valve stem that cooperates with the primary melt channel to block a flow of melt therefrom until the threshold peak pressure is established.

A hot-runner molding apparatus includes a hot-runner nozzle, a hot-runner molding die and a runner unit. The positions of outflow hole portions are arranged rotationally-symmetrical with respect to the positions of the runner groove portions in such a manner that the molten resin is equally distributed from a gate hole portion to the runner groove portions.

A hot runner nozzle for the lateral gating of plastic components has a nozzle body and a pressure lid. Tip elements are arranged between the nozzle body and the pressure lid, which are each inserted into a recess of the nozzle body and are each penetrated by a movable closure needle having a tip, which in at least one operating position protrudes in each case over an outer circumferential edge of the nozzle body. The closure needles each include, on their ends facing away from the tip, a coupling means, which is coupled to a drive means for moving the closure needles. The tip elements are supported on their side facing away from the respective tip of the closure needles on a buttress element inserted between the nozzle body and the pressure lid.