A mold includes a stationary mold, a movable mold, a coupling unit that performs coupling and uncoupling of the stationary mold and the movable mold, a coupling portion movement unit that moves a coupling portion of the stationary mold and the movable mold in a mold closing direction, and a control unit that controls the coupling unit and the coupling portion movement unit.

The safety device for injection molds comprises: a plate (1) attachable to a fixed part of a mold; a base (4) attachable to a movable part of a mold; wherein the base (4) comprises a safety shaft (10) movable between an unmounted position, wherein said safety shaft (10) is housed in a bore (13) of the plate (1), preventing displacement between the plate (1) and the base (4), and an assembled position, in which said safety shaft (10) is located outside the hole (13) of the plate (1), the displacement of the safety shaft (10) being driven by an actuator (7), allowing displacement between the plate (1) and the base (4). It ensures the connection of the two parts of the mold when the mold is not mounted on the injection molding machine.

An injection molding apparatus includes a substantially circular first substrate, a substantially circular second substrate disposed to face a surface of the first substrate, a fixing member which fixes a peripheral end portion of the first substrate and a peripheral end portion of the second substrate, and an injection portion which is provided in the fixing member and from which a composition is injected into a gap between the first substrate and the second substrate, in which a space connecting with the injection portion and the gap is provided in at least a part of a periphery of the gap, and a width of the space in a thickness direction is larger than a width of the gap in the thickness direction.

Manufacturing a molded part using one injection molding machine while changing between multiple molds includes performing, at a molding operation position in the injection molding machine, clamping, injection, and dwelling of a mold, conveying the mold from the molding operation position and performing a process of cooling the mold at a position different from the molding operation position, conveying the mold to the molding operation position, opening the mold, and ejecting a molded part from the mold, wherein, before performing the first step for a first mold, a molded part previously ejected from a second mold is placed into the first mold that has been opened.

An injection molding method for a semifinished product includes a semifinished product emplacement step, a semifinished product pre-compression step and a forming step. First, a pair of mold with a forming space is provided. A semifinished product is put into the mold, and a first joint is performed to the mold by a press-fit jig, fixing the semifinished product in the forming space. The semifinished product is also tightly fitted with the mold. Next, a first open-die is performed and the press-fit jig is removed. After that, a second joint is performed, and a forming material is injected into the forming space. Finally, a second open-die is performed, and then a finished product is formed. By the semifinished product pre-compression step, the forming material can be prevented from resulting in spill or burr on the semifinished product, thereby improving the yield of injection molding.

A mold includes a stationary mold, a movable mold, a coupling unit that performs coupling and uncoupling of the stationary mold and the movable mold, a coupling portion movement unit that moves a coupling portion of the stationary mold and the movable mold in a mold closing direction, and a control unit that controls the coupling unit and the coupling portion movement unit.

A mold for casting a polymeric aircraft window panel includes a first mold half (12) having a first mold surface (24), and a second mold half (14) having a second mold surface (50). The first mold surface (24) and/or the second mold surface (50) have a shape conforming to a final shape for the major surfaces of the aircraft window panel. The first mold half (12) and/or the second mold half (14) can be formed of rolled, hydroformed, or stamped metal.

An injection molding method for a semifinished product includes a semifinished product emplacement step, a semifinished product pre-compression step and a forming step. First, a pair of mold with a forming space is provided. A semifinished product is put into the mold, and a first joint is performed to the mold by a press-fit jig, fixing the semifinished product in the forming space. The semifinished product is also tightly fitted with the mold. Next, a first open-die is performed and the press-fit jig is removed. After that, a second joint is performed, and a forming material is injected into the forming space. Finally, a second open-die is performed, and then a finished product is formed. By the semifinished product pre-compression step, the forming material can be prevented from resulting in spill or burr on the semifinished product, thereby improving the yield of injection molding.

A clamp assembly for an injection molding machine includes a clamp piston slidable within a housing among a clamping position, a mold break position, and a meshing position disposed axially intermediate the clamping and the mold break positions. A clamp chamber urges the clamp piston towards the clamping position when pressurized, and a return device urges the clamp piston from the clamping position to the meshing position when pressure in the clamp chamber is relieved. At least one mold break actuator is coupled to a mold break engagement surface disposed within the housing. The mold break actuator is adjustable to accommodate retraction of mold break surface when the clamp piston moves to the clamping position, and to forcefully push the mold break surface forward against the clamp piston when moving the clamp piston to the mold break position.

An assembly includes a first mold component defining a first portion of a mold cavity and a first slot. The first slot corresponds to a first portion of a retention channel. The assembly also includes a second mold component defining a second portion of the mold cavity and a second slot. The second slot corresponds to a second portion of the retention channel. The assembly also includes a connector having a cross-sectional shape corresponding to a cross-sectional shape of the retention channel. The connector has thermal expansion characteristics that are different from thermal expansion characteristics of the first and second mold components such that when the first and second mold components are in contact and the connector is inserted into the retention channel, heating the assembly causes differential thermal expansion of the connector and the mold components resulting in a clamping force between the mold components.