Abstract: A liquid blow-molding apparatus in which a liquid circulates between a feed path formed in a support block, when a valve mechanism is in a closed state, and a pressurized liquid feed unit, and pressurized liquid is fed from the feed path through a blow nozzle into a preform when the valve mechanism is in an open state. The feed path has a shape including a flow path body, a dome chamber that is formed in a domed shape and that is continuous with an upper end of the flow path body, a first port that has the same upper end as the dome chamber and which extends horizontally from the dome chamber, and a second port connected to the flow path body.

Abstract: A blow molding device is provided with a mold in which a preform is disposed, a cylindrical nozzle that is inserted into a mouth part of the preform, a pressurized fluid supply part for supplying a pressurized incompressible fluid to the nozzle, a sealing body that is movable between a closed position that blocks the nozzle and an open position that opens the nozzle, a plurality of suction holes provided on an inner peripheral surface of the nozzle, a vertical hole provided extending along the axial direction of the nozzle for connecting a plurality of suction holes to each other, and a suction pump connected to the vertical hole via a suction path for applying suction force to a plurality of the suction holes for suctioning incompressible fluid adhered to the nozzle.

Abstract: A blow molding device includes a blow molding mold to which a preform is fitted, a blow nozzle that is fitted to a mouth tubular portion of the preform, and a pressurized liquid supply unit configured to supply a pressurized liquid to the blow nozzle, the preform being to be molded into a shape conforming to a cavity of the mold by filling the liquid into the preform through the blow nozzle. The blow nozzle includes a central hole and a plurality of peripheral holes having an inner diameter smaller than an inner diameter of the central hole and arranged to surround the central hole. The liquid is filled into the preform through the central hole and the plurality of peripheral holes.

Abstract: A container manufacturing device having a preform manufacturing portion, a conveyor, a blow molding device, where the preform is to the blow molding device while maintain the residual heat from the preform manufacturing portion. The preform manufacturing portion includes a molding die and a feeder for supplying a molten thermoplastic resin to a cavity of the molding die. In the blow molding portion, liquid is used to mold the preform into a container of a predetermined shape.

Abstract: A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

Abstract: A blow molding device, having: a mold; a blow nozzle tightly communicating with a mouth tubular part of a preform when the preform fitted in the mold; and a stretch rod, the blow molding device imparting shape to a container by longitudinally stretching the preform by means of the stretch rod and stretching the preform into an expanded shape by means of a pressurized liquid fed, via the blow nozzle, from a pressurized liquid feeding part separately provided, in which the blow nozzle has a support part for supporting the posture of the stretch rod, and a filling head part communicating with the mouth tubular part of the preform, the filling head part having a feed channel formed therein in the axial direction; and the support part and the filling head part are configured to be detachably coupled to each other in the vertical direction.

Abstract: A blow molding device includes a blow molding mold to which a preform is fitted, a blow nozzle that is fitted to a mouth tubular portion of the preform, and a pressurized liquid supply unit configured to supply a pressurized liquid to the blow nozzle, the preform being to be molded into a shape conforming to a cavity of the mold by filling the liquid into the preform through the blow nozzle. The blow nozzle includes a central hole and a plurality of peripheral holes having an inner diameter smaller than an inner diameter of the central hole and arranged to surround the central hole. The liquid is filled into the preform through the central hole and the plurality of peripheral holes.

Abstract: To effectively prevent occurrence of stretching unevenness during blow molding using a liquid as the pressure medium without significantly modifying the structure of a device, provided is a blow molding device including: a metal mold used for blow molding; and a blow nozzle that tightly communicates with a mouth tubular portion of a bottomed tubular preform, the liquid as the pressure medium being supplied into the preform through the blow nozzle. The blow nozzle is provided, at a lower end portion thereof, with an engaging tubular piece that is inserted into the mouth tubular portion, and the engaging tubular piece has a length by which a lower end of the engaging tubular piece extends further downward than a neck ring in a state where the blow nozzle is in communication with the mouth tubular portion, the neck ring being provided around a lower end of the mouth tubular portion.

Abstract: A blow molding device, having: a mold; a blow nozzle tightly communicating with a mouth tubular part of a preform when the preform fitted in the mold; and a stretch rod, the blow molding device imparting shape to a container by longitudinally stretching the preform by means of the stretch rod and stretching the preform into an expanded shape by means of a pressurized liquid fed, via the blow nozzle, from a pressurized liquid feeding part separately provided, in which the blow nozzle has a support part for supporting the posture of the stretch rod, and a filling head part communicating with the mouth tubular part of the preform, the filling head part having a feed channel formed therein in the axial direction; and the support part and the filling head part are configured to be detachably coupled to each other in the vertical direction.

Abstract: A blow molding device includes a blow nozzle to be inserted tightly into a mouth tube section of preform when the preform is inserted in a mold. The blow molding device also includes a pressurized liquid feeding unit and feeds a pressurized liquid from the pressurized liquid feeding unit into the preform through the blow nozzle to form a container into an expanded shape along a cavity of the mold. A valve mechanism, provided at a downstream end of a feed channel for the liquid in the blow nozzle, can open and close the feed channel so that when the valve mechanism is in a closed state, the liquid circulates between the feed channel and the pressurized liquid feeding unit, and when the valve mechanism is in an open state, the pressurized liquid is fed through the feed channel into the preform.

Abstract: To effectively prevent occurrence of stretching unevenness during blow molding using a liquid as the pressure medium without significantly modifying the structure of a device, provided is a blow molding device including: a metal mold used for blow molding; and a blow nozzle that tightly communicates with a mouth tubular portion of a bottomed tubular preform, the liquid as the pressure medium being supplied into the preform through the blow nozzle. The blow nozzle is provided, at a lower end portion thereof, with an engaging tubular piece that is inserted into the mouth tubular portion, and the engaging tubular piece has a length by which a lower end of the engaging tubular piece extends further downward than a neck ring in a state where the blow nozzle is in communication with the mouth tubular portion, the neck ring being provided around a lower end of the mouth tubular portion.

Abstract: A blow molding device includes a blow nozzle to be inserted tightly into a mouth tube section of preform when the preform is inserted in a mold. The blow molding device also includes a pressurized liquid feeding unit and feeds a pressurized liquid from the pressurized liquid feeding unit into the preform through the blow nozzle to form a container into an expanded shape along a cavity of the mold. A valve mechanism, provided at a downstream end of a feed channel for the liquid in the blow nozzle, can open and close the feed channel so that when the valve mechanism is in a closed state, the liquid circulates between the feed channel and the pressurized liquid feeding unit, and when the valve mechanism is in an open state, the pressurized liquid is fed through the feed channel into the preform.