In an injection molding machine in which intermediate molds are disposed movably in a mold opening/closing direction between a movable platen attached with a movable mold and a stationary platen attached with a stationary mold, setting is simplified when individually setting a setting value related to molding using the movable mold and the intermediate mold and a setting value related to molding using the stationary mold and the intermediate mold. In a method for controlling an injection molding machine in which intermediate molds are disposed movably in a mold opening/closing direction between a movable platen attached with a movable mold and a stationary platen attached with a stationary mold, single setting enables setting of both of a setting value related to molding using the movable mold and the intermediate mold and a setting value related to molding using the stationary mold and the intermediate mold.

A method is provided for manufacturing a multi-component plastic molded part and a tool system. The method comprises a first injection molding step for molding at least one preform, and a second injection molding step for molding at least one second component onto the preform. The first and second injection molding steps are performed with an injection molding machine comprising a first outer half-mold and at least one second outer half-mold positioned on opposite sides of a rotatable carrier-block. The carrier-block has at least four side faces each comprising an inner half-mold. The preform in the first injection molding step the second component in the second injection molding step are simultaneously injection molded. The injection molding machine is opened by moving the first and second outer half-mold spaced apart from the rotatable carrier-block. The preform is carried out of the first injection molding step, the plastic molded part is carried out of the second injection molding step by rotating the carrier-block. The preform is cooled while carried by the inner-half mold on the carrier-block by means of a cooling medium. The plastic molded part is removed from the inner-half mold on the carrier-block by means of a handling means.

A method includes a first molding process and a second molding process performed repeatedly. The first molding process includes injecting resin into a first pair of molds, in which a first pair of divided pieces is formed and which is fitted together without an inner mold, to couple the first pair of divided pieces to form a first hollow article at an injection station. The second molding process includes (i) injecting resin into a third pair of molds, which is fitted together with one inner mold interposed therebetween, to mold a third pair of divided pieces at the injection station, (ii) taking out the first hollow article from the first pair of molds at a removing station, and (iii) removing another inner mold from a second pair of molds while leaving a second pair of divided pieces between the second pair of molds at the setup station.

The present invention molds, with simple processes, a tube which has a smaller outer diameter and is hardly bent in a folded manner. The present invention includes (i) a primary molding step of forming a primary molded body by carrying out resin molding while a reinforcing member and a core pin (4) are placed in a cavity of a first mold made up of a lower mold (30) and an upper mold (40) for primary molding and (ii) a secondary molding step of covering the reinforcing member by carrying out resin molding while the primary molded body is placed in a cavity of a second mold that has an inner diameter larger than an inner diameter of the cavity of the first mold.

A method of manufacturing a liquid ejecting head has a first molding step, a step of performing positioning and a second molding step. In the first molding step, a first member, a second member, and a third member are molded by injecting a resin at different locations inside of a set of a fixed mold, an intermediate movable mold, and a movable mold. In the step of performing positioning, the set is detached in a first direction and the intermediate movable mold and the movable mold are moved in a second direction. In the second molding step, a resin is injected to the inside of the set that is clamped to bond. During a period from the first molding step to completion of the second molding step, the first member, the second member, and the third member are held by insert mold pieces used for molding the members, respectively, in the first molding step.

An injection molding machine includes a machine base extending along a horizontal machine axis; a stationary platen fixed to the base; a moving platen supported by the base; a center section supported by the base axially intermediate the stationary and moving platens; at least one mold stroke actuator for translating the moving platen and the center section along the machine axis between a mold-open position and a mold-closed position; a two-stage first injection unit supported by the base behind the stationary platen for injecting a first resin through the stationary platen; and a two-stage second injection unit supported by the base behind the moving platen for injecting a second resin through the moving platen. The second injection unit is translatable along the machine axis to accommodate translation of the moving platen during movement between the mold-open and mold-closed positions.

The invention is directed to a process to manufacture an interconnected stack of thermoplastic frames having two sides by stacking the thermoplastic frames to obtain a stack of frames such that the facing sides of two neighbouring frames are in contact with each other at a contact area. When stacking a longitudinal conduit is formed which runs along the length of the stack and a branched conduit is formed at the contact area. The interconnected stack of thermoplastic frames are obtained by supplying a pressurised melt of a plastic material to the elongated conduit and branched conduits.

A resin molding method includes a first molding step of molding a first molded part and a second molded part in a mold and a second molding step of joining the first molded part and the second molded part. In the first molding step, the second molded part is formed by injecting resin into an area where a first core movable in the first direction and a second core movable in a second direction are engaged. In the second molding step, the second molded part is joined to the first molded part by injecting the resin while the first core is in contact with the second molded part and the second core is removed from the second molded part. Areas where the first core and the second core are located in the first molding step become hollow areas connected to each other and part of ends of the first core in the first direction is not in contact with the second core.

A film material insert molding method, includes an intermediate part forming step of forming a first intermediate part having an edge extending radially outward, the edge being disposed at and near an outer peripheral end of a final shape of a film material, a transparent resin layer forming step of forming a second intermediate part including a transparent resin layer, by injection molding, on a front surface of the first intermediate part, with the edge of the first intermediate part being fixed, and a substrate resin layer forming step of forming an insert-molded article including a substrate resin layer, by injection molding, on a back surface of the second intermediate part, the substrate resin layer covering a surface of a radially outer end of the edge.

The invention is directed to a process to manufacture an interconnected stack of thermoplastic frames having two sides by stacking the thermoplastic frames to obtain a stack of frames such that the facing sides of two neighbouring frames are in contact with each other at a contact area. When stacking a longitudinal conduit is formed which runs along the length of the stack and a branched conduit is formed at the contact area. The interconnected stack of thermoplastic frames are obtained by supplying a pressurised melt of a plastic material to the elongated conduit and branched conduits.