Abstract: An injection molding mold including: a flow path through which a molten resin passes; a main body portion including an introduction portion configured to introduce the molten resin into the flow path and a supply portion configured to supply the molten resin from the flow path to a cavity mold; and a plug unit formed with a plug flow path which is a part of the flow path, the plug unit being attachable to the main body portion, in which a prevention portion configured to prevent a pressure loss from occurring when the molten resin passes through the flow path is formed at a portion of the plug flow path where a moving direction of the molten resin changes.

Abstract: A mold includes a position adjustment mechanism that receives a shaft portion extending from a cavity mold, which accommodates a preform, and adjusts a position where the cavity mold is held on a plane intersecting an extending direction of the shaft portion. The position adjustment mechanism includes a first member in which a linear cam hole that receives the shaft portion is formed, and a second member that is disposed to overlap the first member in the extending direction of the shaft portion and rotates with respect to the first member along a plane. The second member has an elongated hole that intersects the cam hole in a direction of the plane and positions the shaft portion together with the cam hole. Further, a position where the cam hole and the elongated hole intersect each other moves along a longitudinal direction of the cam hole by rotation of the second member.

Abstract: A blow molding apparatus for manufacturing a resin container by blow molding a preform having a bottomed cylindrical shape includes: a pair of mold clamping plates that openably and closably supports a pair of blow split molds accommodating the preform; linear motion mechanisms that drive the pair of mold clamping plates in an opening and closing direction and apply a mold clamping force to the mold clamping plate at a time of mold closing; and a lock member that interferes with a lower end side of the mold clamping plate at a mold closing position of the blow split mold and restricts movement of the mold clamping plate in a mold opening direction.

Abstract: A mold for injection molding, the mold including two or more cavity rows, each cavity row having a plurality of cavities, and a cooling flow path, the cooling flow path including: at least one supply port, a distribution conduit, a supply conduit, a cavity cooling portion, a discharge conduit, a collecting conduit, and at least one discharge port. The supply conduit and the discharge conduit are parallel to the cavity rows, and at least one supply conduit and at least one discharge conduit are provided for each cavity row. The distribution conduit and the collecting conduit have larger diameters than the supply conduit and discharge conduit. The distribution conduit and the collecting conduit are arranged below the supply conduit and the discharge conduit such that the distribution conduit and the collecting conduit are provided at different heights from the supply conduit and the discharge conduit.

Abstract: There is provided a cooling mold unit for cooling a preform that has been injection-molded, the preform having a bottomed shape and made of a resin, the cooling mold unit including a core mold having an outer shape corresponding to an inner shape of the preform, and being insertable into the preform, in which an exhaust port configured to discharge air from an inside of the preform through an inside of the core mold is provided at a tip end portion of the core mold facing a bottom portion of the preform.

Abstract: A hot runner mold includes a hot runner mold body portion that is fixed to a fixing plate and supplies a molten resin received from a resin inlet to an injection mold, a nozzle receiving portion that is disposed to be inclined with respect to a position orthogonal to the resin inlet of the hot runner mold body portion and is coaxially connected to a nozzle of an injection device that supplies the molten resin, a relay portion that has a resin flow path having a bent portion therein and guides the molten resin from the nozzle receiving portion to the resin inlet, and a regulating portion that is fixed to the fixing plate and regulates movement of the nozzle receiving portion or the relay portion with respect to the hot runner mold body portion.

Abstract: A mold for injection molding includes: three or more cavity rows, each cavity row having a plurality of cavities; and a cooling flow path configured to allow a cooling medium to flow through the cooling flow path, the cooling medium cooling the cavities, the cooling flow path including: at least one supply port; a distribution conduit communicated with the supply port; a supply conduit communicated with the distribution conduit; a cavity cooling portion communicated with the supply conduit and provided to an outer periphery of the cavities; a discharge conduit communicated with the cavity cooling portion; a collecting conduit communicated with the discharge conduit; and at least one discharge port communicated with the collecting conduit, and the supply conduit and the discharge conduit are parallel to the cavity rows, and at least one supply conduit and at least one discharge conduit are provided for each cavity row.

Abstract: In a manufacturing method for a delamination container, in a first injection molding, a first recess portion is formed by a first protrusion portion in at least part of a first layer. In a second injection molding, a second recess portion which penetrates the first layer and through which a surface of a second layer is exposed is formed in a preform by inserting a second protrusion portion into the first recess portion. During a blow molding, the second recess portion is stretched to form an air introduction hole in an outer layer of the delamination container.

Abstract: A delamination container includes a neck portion having an opening communicating with an inside of the inner layer, a shoulder portion continuously extending in the radial direction from the neck portion, a body portion having a bottomed cylindrical shape, and a constricted portion interconnecting the shoulder portion and the body portion. The diameter of the outer peripheral edge of the shoulder portion is 40 mm or more and 55 mm or less, the axial length from the outer peripheral edge of the shoulder portion to a constricted bottom portion which has the smallest diameter in the constricted portion is 12 mm or more and 25 mm or less, and a ratio of the diameter of the constricted bottom portion to the diameter of the outer peripheral edge of the shoulder portion is 0.80 or more and 0.93 or less.

Abstract: In a manufacturing method for a delamination method, in a second injection molding including forming a second layer on an inner peripheral side of a first layer of a preform having a bottomed cylindrical shape, a second resin material is guided from an opening portion formed in the first layer toward the inner peripheral side of the first layer, and a locking portion protruding from the opening portion toward an outer peripheral side of the first layer is integrally formed with the second layer.

Abstract: A blow molding mold unit comprising: a plurality of blow molds each including: a pair of split molds forming a plurality of cavities arranged in a row in a first direction, a plurality of bottom molds respectively corresponding to the cavities, and a bottom mold fixing plate to which the plurality of bottom molds are fixed, the plurality of blow molds being arranged in a second direction perpendicular to the first direction, first fixing members holding split molds that are arranged at both end positions in the second direction, the first fixing members being fixed to a mold clamping plate, second fixing members arranged between the first fixing members, and to which split molds other than the split molds fixed to the first fixing members are fixed, a push-up rod disposed below the bottom mold fixing plate, and a push-up member configured to be coupled to a lifting device and extending along the second direction below the second fixing members, the push-up member being configured to push up, via the push-up r

Abstract: An object of the present invention is to provide a blow molding device, a blow molding method, a mold unit, and a jig capable of shortening a molding cycle time.

Abstract: There is provided a mold unit for cooling a preform that has been injection-molded, the preform having a bottomed shape and made of a resin, the mold unit including a core mold having an outer shape corresponding to an inner shape of the preform, and being insertable into the preform, in which a flow path for a temperature adjustment medium extending in an axial direction of the core mold is formed inside the core mold, the flow path is formed at a position displaced in a circumferential direction of the core mold, and a position of the flow path is adjustable in the circumferential direction.

Abstract: A blow molding method includes: performing a primary blowing on a resin preform to form an intermediate molded product; and performing a final blowing on the intermediate molded product to form a final molded product, and at least one step of performing the primary blowing and the final blowing includes a thinning step of continuously repeatedly performing, within a predetermined time, steps of: stretching an object by blowing; and contracting stretched parts of the object by exhausting blown air.

Abstract: An injection molding mold including: a flow path through which a molten resin passes; a main body portion including an introduction portion configured to introduce the molten resin into the flow path and a supply portion configured to supply the molten resin from the flow path to a cavity mold; and a plug unit formed with a plug flow path which is a part of the flow path, the plug unit being attachable to the main body portion, in which a prevention portion configured to prevent a pressure loss from occurring when the molten resin passes through the flow path is formed at a portion of the plug flow path where a moving direction of the molten resin changes.

Abstract: A blow molding mold unit comprising: a plurality of blow molds each including: a pair of split molds forming a plurality of cavities arranged in a row in a first direction, a plurality of bottom molds respectively corresponding to the cavities, and a bottom mold fixing plate to which the plurality of bottom molds are fixed, the plurality of blow molds being arranged in a second direction perpendicular to the first direction, first fixing members holding split molds that are arranged at both end positions in the second direction, the first fixing members being fixed to a mold clamping plate, second fixing members arranged between the first fixing members, and to which split molds other than the split molds fixed to the first fixing members are fixed, a push-up rod disposed below the bottom mold fixing plate, and a push-up member configured to be coupled to a lifting device and extending along the second direction below the second fixing members, the push-up member being configured to push up, via the push-up r

Abstract: There is provided a blow molding device, in which the blow molding device includes an injection molding part injection-molding a preform having a main body portion, a temperature adjustment part adjusting a temperature of the preform, and a blow molding part blow-molding the preform, and the temperature adjustment part includes a conditioning core mold that is in contact with an inner surface of the main body portion and a conditioning cavity mold that is in contact with an outer surface of the main body portion, and compresses and deforms the main body portion of the preform into a desired shape with the main body portion sandwiched between the conditioning core mold and the conditioning cavity mold.

Abstract: A method for manufacturing a resin container part includes: injection-molding of a bottomed resin preform including, on a bottom portion thereof, a thick bulging portion that retains residual heat by which the bulging portion is deformable by being pressed to follow a shape of a blow cavity mold; and a blowing including stretching a body portion of the preform by applying a blow pressure to the preform and forming a joint portion by pressing the bulging portion of the preform with an upper bottom mold to deform the bulging portion to follow the shape of the blow cavity mold.

Abstract: The present application provides: first base members that respectively hold split molds disposed at both ends in a second direction, and are fixed to a mold clamping plate; second base members disposed between the first base members and having the split molds other than the split molds fixed to the first base members fixed thereto; and coupling members that couple the first base members and the second base members in a state that allows each of the pair of split molds to come into contact or separate. The present invention is configured such that the plurality of second base members follow the movement of the first base members.

Abstract: A mold for injection molding includes: three or more cavity rows, each cavity row having a plurality of cavities; and a cooling flow path configured to allow a cooling medium to flow through the cooling flow path, the cooling medium cooling the cavities, the cooling flow path including: at least one supply port; a distribution conduit communicated with the supply port; a supply conduit communicated with the distribution conduit; a cavity cooling portion communicated with the supply conduit and provided to an outer periphery of the cavities; a discharge conduit communicated with the cavity cooling portion; a collecting conduit communicated with the discharge conduit; and at least one discharge port communicated with the collecting conduit, and the supply conduit and the discharge conduit are parallel to the cavity rows, and at least one supply conduit and at least one discharge conduit are provided for each cavity row.