In-mold foam molding apparatus with movable partitioning members

An in-mold foam molding apparatus comprising:

• partitioning members for partitioning into a plurality of partitioned mold chambers a mold cavity defined by a core mold and a cavity mold, said partitioning members being arranged such that at least a portion of the plurality of partitioned molding sections constituting the partitioned mold chambers within the mold are unitary;
• filling units provided to each partitioned mold chamber for filling the same with a bead starting material, adjacent partitioned mold chambers being fillable with bead starting materials of different properties,
• wherein the mold cavity is partitionable into a plurality of partitioned mold chambers by means of moveable partitioning members extendable and retractable with respect to the mold cavity through the core mold or cavity mold, and fixed partitioning members provided integrally to the core mold or cavity mold,
• the partitioned molding sections constituting the partitioned mold chambers of the mold into which the moveable partitioning members extend and retract being unitary at locations corresponding to fixed partitioning members, and
• wherein said fixed partitioning members are of comb configuration having a plurality of teeth extending in cantilever fashion in the mold parting direction, arranged at intervals small enough to prevent passage of at least one of the bead starting materials filled into adjacent partitioned mold chamber.

An in-mold foam molding apparatus comprising:

• movable partitioning members for partitioning into a plurality of partitioned mold chambers a mold cavity defined by a core mold and a cavity mold, said partitioning members being arranged such that at least a portion of the plurality of partitioned molding sections constituting the partitioned mold chambers within the mold are unitary,
• filling units provided to each partitioned mold chamber for filling the same with a bead starting material, adjacent partitioned mold chambers being fillable with bead starting materials of different properties;
• wherein said movable partitioning members for partitioning the mold cavity into a plurality of partitioned mold chambers are extendable and retractable with respect to the mold cavity, the plurality of movable partitioning members constituting said partitioned mold chambers being divided into two sets, first moveable partitioning members arranged on the core mold and second moveable partitioning members arranged on the cavity mold, the plurality of core mold partitioned molding sections constituting the partitioned mold chambers being unitary at locations corresponding to the second moveable partitioning members provided to the cavity mold, and the plurality of cavity mold partitioned molding sections constituting the partitioned mold chambers being unitary at locations corresponding to the first moveable partitioning members provided to the core mold.

An in-mold foam molding apparatus comprising:

• partitioning members for partitioning into a plurality of partitioned mold chambers a mold cavity defined by a core mold and a cavity mold, said partitioning members being arranged such that at least a portion of the plurality of partitioned molding sections constituting the partitioned mold chambers within the mold are unitary;
• filling units provided to each partitioned mold chamber for filling the same with a bead starting material, adjacent partitioned mold chambers being fillable with bead starting materials of different properties,
• wherein the mold cavity is partitionable into a plurality of partitioned mold chambers by means of moveable partitioning members extendable and retractable with respect to the mold cavity through the core mold or cavity mold, and fixed partitioning members provided integrally to the core mold or cavity mold,
• the partitioned molding sections constituting the partitioned mold chambers of the mold into which the moveable partitioning members extend and retract being unitary at locations corresponding to fixed partitioning members,
• wherein a core mold or cavity mold provided with said moveable partitioning members has formed therein passage orifices for passage of the moveable partitioning members, and projecting portions that project into the mold cavity are formed along the passage orifices, with apertures of passage orifices on the mold cavity side being situated medially in the cross direction of projecting portions.

An in-mold foam molding apparatus wherein:

• moveable partitioning members for partitioning a mold cavity into a plurality of partitioned mold chambers are provided so as to be extendable and retractable with respect to the mold cavity via passage orifices provided to at least one mold selected from a core mold and a cavity mold;
• projecting portions are formed along the passage orifices in the mold having said passage orifices such that the projecting portions project into the mold cavity;
• and
• apertures of said passage orifices on the mold cavity side are situated medially in the cross direction of projecting portions.

An in-mold foam molding apparatus comprising:

• partitioning members for partitioning into a plurality of partitioned mold chambers a mold cavity defined by a core mold and a cavity mold, said partitioning members being arranged such that at least a portion of the plurality of partitioned molding sections constituting the partitioned mold chambers within the mold are unitary;
• filling units provided to each partitioned mold chamber for filling the same with a bead starting material, adjacent partitioned mold chambers being fillable with bead starting materials of different properties;
• wherein said fixed partitioning members for partitioning the mold cavity into a plurality of partitioned mold chambers are fixed to at least one mold selected from the core mold and the cavity mold;
• and fixed partitioning members of comb configuration having a plurality of teeth extending in cantilever fashion in the mold parting direction, arranged at intervals small enough to prevent passage of at least one of the bead starting materials filled into adjacent partitioned mold chambers, are used as the fixed partitioning members.