Abstract: The present invention is intended to prevent the deformation of a cylindrical mouth portion of a preform when a blow pressure acts thereon in a diameter expanding direction during biaxial orientation blow molding. During biaxial orientation blow molding, sealing of the blow pressure is accomplished by means of a neck ring P1 circumferentially provided on a lower end of the circumferentially provided on a lower end of the circumferential surface of a cylindrical mouth portion P2 of a preform to thereby make the blow pressure act uniformly on the whole area of the cylindrical mouth portion P2, whereby the unreasonable deformation of the cylindrical mouth portion P2 due to the ununiform application of blow pressure thereto can totally be eliminated.

Abstract: An apparatus for controlling dose of irradiation comprising a first barrier body (1) arranged between a conveyer (5) and an irradiation device (6) located opposite to said conveyer (5), the first barrier body (1) being slidably movable along a running direction of the conveyer (5), and a second barrier body (2) arranged in juxtaposition with the first barrier body (1) and slidably movable along the running direction of the conveyer (5), a distance between the first barrier body (1) and the second barrier body (2) being so adjustable as to control the dose of irradiation to the product.

Abstract: In a first forming stage, the bottom portion of a mono-molded plastic syringe (a type wherein the whole portion, i.e., a main syringe body and a needle portion, is molded unitedly in a cast) is heated and then stretched to a certain length, forming the edge portion like a needle, while the syringe is intermittently moved. Then the sryinge is carried to a second forming stage, where the syringe is moved intermittently and the needle portion is heated, then it is bent at a certain angle and is cut in a certain length, forming a completed syringe.

Abstract: An irradiating apparatus comprises a bucket group consisting a plurality of buckets spaced equally from each other and connected to a first endless chain, and a roller group consisting of a plurality of roller located under the bucket group. Each bucket comprises a barrel shaped body having a bottom which has a plurality of openings. Moreover, the bucket receives an article to be transferred such as preform and transfers it in a horizontal position therein. The rollers are connected to second endless chains. A pair of rollers are arranged parallel to each other in the transfer direction. The roller has a plurality of lands which intrude in the openings of the bucket. A pair of rollers are rotated in the same direction to rotate the article to be transferred. The roller group travels at the same speed in the same direction as those of the bucket.

Abstract: An inverting mechanism according to the present invention comprises an inverting body for inverting which includes a plate member fixed to each of a plurality of carriers connected to an endless chain and four inverting elements rotatably supported on each plate member at circumferential positions spaced equidistant from each other, and an inverting cam provided on a rack rail on which the inverting elements roll. The inverting element on the body traveling on the rail drops into a groove formed in the inverting cam to rotate the body about the dropped inverting element as another inverting element rolls along a projection on the reversing cam to downwardly direct the top opening of the carrier and thereby an article to be transferred can be taken out of the carrier.

Abstract: Cylindrical plastic pieces (i.e., preforms) each with a bottom are supplied one by one to jigs circulated through the heating and blowing mold of a biaxial-orientation blow-molding machine. The pieces are formed of polyethylene terephthalate material to obtain transparent thin-walled bottle-shaped containers, and are formed in cylindrical shape each with a semispherical bottom and a prefinished neck portion molded simultaneously in large number by an injection molding machine.

Abstract: A transparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: A tranparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: A transparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: A transparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in numerous large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: A device for obliquely conveying pieces of cylindrical hollow shape with a bottom for forming a thin, transparent, bottle-shaped container from the floor level to the height for supplying the pieces to the mold of a blow-molding machine. The numerous pieces are simultaneously injection-molded from a polyethylene terephthalate resin via an injection molding machine, and are supplied to the mold of the blow-molding machine after being cooled to room temperature. Each of the pieces thus formed is conveyed via a rope conveyor in a vertically neck portion upward position as lifted from the conveyor, and is further conveyed obliquely upwardly by an oblique conveyor having a plurality of attachments attached to the conveyor's chain for supporting the pieces at the bottoms to exactly convey the pieces one by one to meet the molding speed of the blow-molding machine.

Abstract: A device for unloading a product or a light bottle-shaped container of synthetic resin from a predetermined jig for engaging the container throughout the production line from an injection molding machine. This device incorporates a turntable for holding a number of jigs at equal central angle intervals at its periphery, a rocking unit relatively rotatably rocking to turn at the same speed in the same direction as the turntable and to then return to the original position faster than the previous speed, and a pair of linking mechanisms supported by a supporting arm to the rocking unit for unloading the container engaged by the jig. Thus, this device can continuously, rapidly and exactly feed the unloaded container to the next step.

Abstract: A device for supplying a piece of preformed synthetic resin to the next process line in an apparatus for producing a bottle-shaped blow-molded container of biaxially oriented polyethylene terephthalate by overturning the piece from neck portion upward position into neck portion downward position, engaging the piece thus overturned to neck portion downward position with orienting jigs held at equidistant central angles at the peripheral edge of a turntable rotating at constant speed in predetermined direction, and supplying the piece held at the jigs around the turntable to a next process line adjacent to the turntable. Thus, the pieces can be continuously rapidly and exactly supplied to the next stage or line.

Abstract: This heating blow-molding machine fabricates a number of bottle-shaped containers from biaxially oriented plastic pieces or parisons by supplying the plastic pieces to a heating unit to heat them to the orientation temperature and then supplying them to 12-station rotary blow molding machine for biaxial orientation. Each of the plastic pieces or parisons is made of polyethylene terephthalate resin to provide a thin-walled transparent bottle-shaped container of cylindrical shape with one bottom and a prefinished neck portion injection molded simultaneously in numerous number by an injection molding machine. This blow-molding machine consists of a turntable for the heating unit, a turntable for a blow-molding machine, and a turntable for loading and unloading the pieces and the products blow-molded from the pieces.