A molding apparatus is used, the apparatus including a mold made up of a first mold, a second mold opposite the first mold, and an intermediate mold disposed between the first mold and the second mold. The apparatus further includes a support member configured to support the intermediate mold, and an injection mechanism configured to inject molten resin. The support member includes a rotating mechanism. The intermediate mold is mounted on the rotating mechanism such as to rotate coaxially with the rotation axis of the rotating mechanism.

A positioning jig that is disposed instead of a rotating frame of an intermediate mold, the rotating frame being disposed between a stationary mold and an intermediate die of the intermediate mold, in which a through-hole is formed at a position corresponding to a disposition position of a guide pin that is provided on the stationary mold or the rotating frame for positioning between the stationary mold and the rotating frame, the through-hole having the same or substantially the same diameter size as a diameter size of the guide pin and having a center axis with the same direction as a direction of a center axis of the guide pin, and the through-hole allows a jig pin, which slidably penetrates through a guide bush to be fitted with the guide pin, to slidably penetrate.

A rotary injection mold for an elastic housing of a neckband headset includes an upper mold core and a lower mold core, the lower mold core is provided with a main installation cavity and a control end installation cavity, the main installation cavity is installed with a rotary mold core having two half-ring molding channels. When the upper mold core and the lower mold core are closed, a primary injection cavity is formed, for molding a supporting member supporting a neckband; a secondary injection cavity is formed, for molding a strip member wrapping the neckband. The control end installation cavity is provided with two control end injection molds for molding a control end elastic casing, and the control end injection cavities are hermetically communicated with the secondary injection cavity. By the invention, an integrated elastic housing is molded to wrap the neckband headset, to improve the manufacturing efficiency.

An injection molding device for manufacturing of multi-component plastic parts includes at least one first material component and at least one second material component. The injection molding device comprising a transfer means being designed to in the open position of the injection molding device transfer first injection molded material components from at least one group of first cavities into the at least one group of second cavities by rotation.

A molding unit has a first molding station having a first mold having a first mold cavity, a second molding station having a second mold having a second mold cavity, a transfer unit having a support and at least a first core extending from the support. The transfer unit is arranged for moving the first core into a first molding position at the first molding station and into a second molding position at the second molding station. The first core extends into the first mold cavity when the first core is in the first molding position and into the second mold cavity when the first core is in the second molding position. A core actuation unit is arranged so that at least at the first molding station the first core is moved relative to the support from a first core position into a second core position when the first core is moved into the first molding position.

A transmission device configured to transpose a drive movement of a drive into a linear and rotating movement of a first tool part of a forming tool of a forming device, the transmission device including a shaft, including a shaft axis; a first interface; a second interface, wherein the first interface is configured to connect the shaft with the first tool part at least torque proof, and the second interface is configured to connect the shaft with the drive at least by axial fixing; and a housing supporting the shaft is rotatable about the shaft axis and displaceable on a linear path parallel to the shaft axis, wherein at least one radial recess is arranged at an outer radial circumferential surface of the shaft, and at least one radial protrusion cooperating with the at least one radial recess is arranged at least at one guide element of the housing.

A method of manufacturing a transmission cover for a LiDAR sensor can include preforming a film layer configured to transmit infrared rays in a specific wavelength range, inserting the film layer into a mold and molding a first injection molded product in which the film layer bonded to a base layer by injection a base layer material into the mold. The transmission cover for a LiDAR sensor can be capable of implementing a three-dimensional exterior design with 2D and 3D shapes, while maintaining functionality of the sensor through the use of an infrared transmission film.

A multi-stage helical gear manufacturing apparatus includes a first mold member, a second mold member, a large gear rotation core, a sleeve pin, a small gear rotation insert, and an insert pin. The second mold member moves the insert pin and the small gear rotation insert after the insert pin is caused to retreat in relation to the small gear rotation insert at the time of mold opening. The first mold member prohibits rotation of the large gear rotation core at the time of mold clamping, permits rotation of the large gear rotation core when the insert pin and the small gear rotation insert of the second mold member are moved at the time of mold opening, and causes the sleeve pin to advance toward the second mold member in relation to the plastic after the insert pin and the small gear rotation insert are separated from the plastic.

An injection molding apparatus for producing a plastics molding comprising a first component, a second component, and a third component comprises a first mold plate having at least 3 first mold nests, and a second mold plate having at least 3 second mold nests. In the closed state, the mold plates cooperate in the production of the plastics mold. In the opened state, the second mold plate is rotatable relative to the first mold plate. The at least 3 second mold nests comprise, in a case A), at least two second mold nests for injection molding the first component, and at least one second mold nest for injection molding the third component, or, in a case B), at least two second mold nests for injection molding the second component, and at least one second mold nest for injection molding the first component.