Molding system, apparatus for taking out molded product, mold equipment, and method for manufacturing hollow molded product

A molding system for manufacturing a hollow molded product by blow molding, comprising:

• a molding machine having a mold equipment in which the hollow molded product is blow-molded;
• and
• an apparatus for taking out molded product that sucks the hollow molded product molded in the mold equipment by a suction portion and takes out the hollow molded product from the mold equipment,
• wherein the suction portion of the apparatus for taking out molded product including:
• an insert portion inserted in the hollow molded product through a blow pin extraction port of the hollow molded product;
• an abutting portion arranged by being spaced apart from the insert portion, and abutting on a part of an outer circumferential surface of the hollow molded product that is spaced apart by a predetermined distance from the blow pin extraction port;
• a recess provided between the insert portion and the abutting portion, the recess forming a closed space communicating with an internal space in the hollow molded product when a part of the hollow molded product where the blow pin extraction port is formed is accommodated in the recess in a state where the abutting portion is abutting on the outer circumferential surface of the hollow molded product;
• and
• a suction port provided in the insert portion and sucking air in the internal space and the closed space.

A mold equipment used in a molding system where a suction portion of an apparatus for taking out molded product sucks a hollow molded product blow-molded by the mold equipment of a molding machine having the mold equipment in which the hollow molded product is blow-molded in a cavity, the mold equipment comprising:

• a first mold member forming a part of the cavity;
• and
• a second mold member provided adjacent to the first mold member and forming a part of the cavity,
• wherein a constituent surface of the cavity of the first mold member and a constituent surface of the cavity of the second mold member are arranged differently from a closed-mold state, and the hollow molded product molded in the cavity in a state of abutting on the constituent surface of the cavity of the first mold member is sucked and held in the mold equipment used in the molding system.

An apparatus for taking out molded product that sucks a blow-molded hollow molded product by a suction portion and takes out the hollow molded product from a mold equipment of a molding machine,

• wherein the suction portion including:
• an insert portion inserted in the hollow molded product through a blow pin extraction port of the hollow molded product;
• an abutting portion arranged by being spaced apart from the insert portion, and abutting on a part of an outer circumferential surface of the hollow molded product that is spaced apart by a predetermined distance from the blow pin extraction port;
• a recess provided between the insert portion and the abutting portion, the recess forming a closed space communicating with an internal space in the hollow molded product when a part of the hollow molded product where the blow pin extraction port is formed is accommodated in the recess in a state where the abutting portion is abutting on the outer circumferential surface of the hollow molded product;
• and
• a suction port provided at the insert portion and sucking air in the internal space and the closed space.

A method for manufacturing a hollow molded product by blow molding, using

• a molding machine having a mold equipment in which the hollow molded product is blow-molded in a cavity, and
• an apparatus for taking out molded product that sucks the hollow molded product molded in the mold equipment by a suction portion and takes out the hollow molded product from the mold equipment,
• the method comprising:
• a step of preparing the mold equipment that includes a first mold member having a first bottom wall surface portion of a bottom wall surface of the cavity, and a second mold member provided adjacent to the first mold member and having a second bottom wall surface portion of the bottom wall surface of the cavity;
• a step of configuring the first bottom wall surface portion of the first mold member and the second bottom wall surface portion of the second mold member to form the bottom wall surface of the cavity when in a closed-mold state;
• and
• a step of sucking and holding the hollow molded product at the first bottom wall surface portion of the first mold member after the hollow molded product is molded.