Disclosed is a guide bushing for the guiding and sealing of a closing needle of a needle valve nozzle of an injection moulding apparatus, the guide bushing having a main part and a fastening element, wherein the main part has a through-opening for the closing needle, wherein the through-opening comprises at least one guiding portion, which encloses the closing needle with slight movement play, wherein the through-opening comprises at least two expansion portions, whose diameter in each case is larger than that of the at least one guiding portion. The guide bushing moreover comprises a fastening element, which is securable to the main part, wherein a seal element is arranged between the fastening element and the main part, bearing against the entire circumference of a closing needle inserted into the through-opening.

An injection molding apparatus (5) comprising a clamp plate (80), a heated manifold (20), an actuator (10) interconnected to a valve pin (17) drivable along an axis (A), a mold (300) and a cooling device (500) that cools the actuator, the actuator (10) comprising a thermally conductive housing body (12) that is mounted in direct heat or thermally conductive contact with one or more insulators (60, 50) that are in turn mounted in direct heat conductive contact or communication with the manifold (20), the cooling device (500) comprising a heat transmitter comprised of an arm (502) comprised of a thermally conductive material having a distal end surface (502s) for making thermally conductive contact with the clamp plate (80), the proximal surface (502b) of the arm (502) being slidably engageable against a complementary surface (12ls) of the actuator that is spaced laterally (12ld) from the valve pin axis (A) for transmitting heat from the housing body (12) to the proximal surface (502b) and in turn to the distal end surface (502s) of the arm (502).

An injection molding apparatus (5) comprising an electrically driven actuator (200) having a driven rotatable rotor drivably rotatably interconnected to an output shaft (12) or to an output rotation device (16, 430, 500) that is rotatably driven around an output rotation axis (12a, R3a) and a cam device or surface (600) that is eccentrically disposed or mounted off center a selected distance (ED) from the output rotation axis (12a, R3a) in an arrangement such that when the shaft (12) or rotation device (16, 430, 500) is rotatably driven, the cam member or surface (600) is eccentrically rotatably driven around the output rotation axis (12a, R3a).

An improved hot runner system is provided. The hot runner system includes a hot drop having an inlet for receiving molten material, the inlet diverging into first and second channels that converge at a feeder tube for providing an even distribution of molten material in a mold cavity. The hot runner system further includes a valve pin adapted to reciprocate within the feeder tube for opening and closing the valve gate, the valve pin being moveable in response to activation of first and second linear actuators disposed exterior to the hot drop. The linear actuators are moveable in unison with each other and are joined to the valve pin via a cross-bar that extends through an interior portion of the hot drop between the first and second channels.

A vehicular resin molded article is formed by solidifying a molten resin filled in a cavity of an injection mold and having a concave gate mark formed by a valve pin and remaining thereon in which L/T is 190 or more where L is a flow distance of the molten resin from the gate mark to a filling terminal and T is a maximum thickness. When the valve pin is moved to the cavity side and is pressed against the molten resin, since the contact area of a tip end portion with respect to the molten resin in the vehicular resin molded article increases and the temperature of the tip end portion in the valve pin tends to decrease, the portion of the vehicular resin molded article where the valve pin is pressed against is sufficiently solidified and string drawing or silver streak is less likely to occur.

An apparatus includes a stem connector configured to connect a movable piston with a valve stem, in which the movable piston is slidably receivable in a cylinder, and in which the cylinder is mountable to a distribution manifold of a molding system. The stem connector maintains connection between the movable piston and the valve stem while the valve stem is moved to selectively open or close a mold gate of a mold assembly installed in the molding system. The stem connector urges the movable piston to tilt at a tilt angle while the movable piston is moved along an interior of the cylinder, and in which the tilt angle is formed between a central piston axis extending through the movable piston and a central stem axis extends through the valve stem.

An injection molding system comprising: a first selected valve, one or more downstream valves, delivering a fluid to a mold cavity, at least one fluid property sensor, each valve associated with a position sensor that detects opening of a gate at an actual open gate time to the controller, the controller automatically adjusting time of instruction to open the gates on a subsequent injection cycle by an adjustment time equal to any delay in time between a predetermined open gate target time and an actual open gate time, wherein the system forms a first one or more parts or objects, the user inspecting or measuring the first one or more parts or objects and manually adjusts the predetermined open gate target time.

An injection molding apparatus (5) comprising a clamp plate (80), a heated manifold (20), an actuator (10) interconnected to a valve pin (17) drivable along an axis (A), a mold (300) and a cooling device (500) that cools the actuator, the actuator (10) comprising a thermally conductive housing body (12) that is mounted in direct heat or thermally conductive contact with one or more mounts (60, 50, 803) that are in turn mounted in direct heat conductive contact or communication with the manifold (20), the cooling device (500) comprising a heat transmitter comprised of an arm (502) comprised of a thermally conductive material having a distal end surface (502s) for making thermally conductive contact with the clamp plate (80), the proximal surface (502b) of the arm (502) being slidably engageable against a complementary surface (12ls) of the actuator that is spaced laterally (12ld) from the valve pin axis (A) for transmitting heat from the housing body (12) to the proximal surface (502b) and in turn to the distal end surface (502s) of the arm (502).

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 (5) comprising a clamp plate (80), a heated manifold (20), an actuator (10) interconnected to a valve pin (17) drivable along an axis (A), a mold (300) and a cooling device (500) that cools the actuator,

the actuator (10) comprising a thermally conductive housing body (12) that is mounted in direct heat or thermally conductive contact with one or more mounts (60, 50, 803) that are in turn mounted in direct heat conductive contact or communication with the manifold (20),

the cooling device (500) comprising a heat transmitter comprised of an arm (502) comprised of a thermally conductive material having a distal end surface (502s) for making thermally conductive contact with the clamp plate (80),

the proximal surface (502b) of the arm (502) being slidably engageable against a complementary surface (12ls) of the actuator that is spaced laterally (12ld) from the valve pin axis (A) for transmitting heat from the housing body (12) to the proximal surface (502b) and in turn to the distal end surface (502s) of the arm (502).