An injection molding apparatus and hot runner system are disclosed. The injection molding apparatus includes a plurality of mold plates in which the hot runner system is received. A manifold receives molding material and has a manifold channel that extends between an inlet and an outlet. A nozzle delivers moldable material to a mold cavity. The nozzle has a nozzle channel in fluid communication between the manifold channel and the mold cavity. A valve pin seal is located at the upstream end of the nozzle, and a valve pin that is connected to an actuator extends through the manifold and nozzle is slidably received in the valve pin seal. The hot runner system further includes a thermal bridge that is in conductive thermal communication with the valve pin seal and a cooled one of the plurality of mold plates.

In order to provide a sprue-bush which is capable of more suitably cooling a melt raw resin in a flow path for a raw resin, there is provided a sprue-bush comprising a flow path for a raw resin and a flow path for cooling media located around the flow path for the raw resin, wherein the sprue-bush comprises a low heat transfer portion, the low heat transfer portion being located at a local region between an upper side portion of the flow path for the raw resin and the flow path for the cooling media, the low heat transfer portion being in a heat transfer relatively lower than that of a region other than the local region.

An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises: a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member, the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device,

wherein the cooling device comprises:

a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member,

the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

Because it is possible to cool down a column member at a higher speed than natural cooling, throughput can be improved further. Especially, when the tubular body M42 and the column part M43 are made of different metals and the column part M43 is pressed into the tubular body M42, a distortion will occur in the column member M42 and M43 and the top board M41 fixed to the column member M42 and M43 due to the difference in thermal expansion coefficients between them, but the cooling paths P1 and P2 can absorb a distortion caused by the difference in thermal expansion coefficients of these metals. In particular, when the top board M41 is used as a mold for resin molding, it is possible to perform resin molding precisely because distortion caused by the difference in thermal expansion coefficients does not easily occur.

An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises:

a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member,

the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises: a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member, the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.

The present disclosure is directed to an injection nozzle for an injection molding device comprising a drive train for at least one closure element arranged movable in a nozzle head in a first direction. The drive train comprises a cam mechanism with a cam head comprising a wedge and at least one side plate. The wedge and the side plate are together arranged moveable in a second direction. Per closure element the wedge comprises at least one first drive surface which interacts with a second drive surface arranged at the closure element at least during closing of the closure element. The at least one side plate comprises a third drive surface which interacts with a fourth drive surface arranged at the closure element at least during opening of the closure element.

The present disclosure is directed to an injection nozzle with a nozzle head including at least one discharge opening for injecting molding material into a mold cavity of a thereto interconnected injection mold and forming therein a molded body. At least one positively controlled closure element movably supported in the nozzle head for closing a communication opening in the connected injection mold. An actuator cylinder comprises a first piston which is interconnected to the closure element. The first piston is arranged movable between a first position, in which the closure element is fully closed, and a second position in which the closure element is fully open. A second piston is interconnected to the closure element, and is arranged movable between a third position in which the second piston is not interconnected to the closure element and a fourth position in which the closure element is limited in an intermediate position.

An injection molding apparatus comprising a clamp plate, a heated manifold, an actuator, a mold and a cooling device, wherein the cooling device comprises: a heat transmitter comprising a distal arm or member and a proximal base or member, the distal arm or member being mounted by a spring loadable interconnection or engagement to or with the proximal base or member, the clamp plate, the mold, the manifold, the actuator and the heat transmitter being assemblable together in an arrangement wherein the spring loadable interconnection is loaded urging the distal end surface of the distal arm or member into compressed engagement with the clamp plate.