摘要:
An apparatus of the present invention includes: a link member (80) including a protruding grip forming part (85) which is configured to form a grip part to a portion of a container by pressurizing a portion of a preform that is expanded during blow molding; and a piston member (90) configured to move forward toward a cavity (70a) to thus press and rotate the link member (80), thereby moving the grip forming part (85) from a standby position to a pressurizing position. The grip forming part (85) has: a pressurizing surface (85a) configured to pressurize the portion of the preform; and a contact surface (85b) configured to come into contact with the piston member (90), wherein the piston member (90) has a pressing surface (92a) that comes into contact with the contact surface (85b) and presses the grip forming part (85) toward an inside of the cavity (70a) when moving the pressurizing surface (85a), and wherein the pressurizing surface (85a) is arranged at an opposite side of the contact surface (85b) of the grip forming part (85) with respect to a moving direction of the piston member (90).
摘要:
A high-quality parison is supplied by maintaining an appropriate tension state while restricting a parison discharged from an extrusion die constantly. A parison supply device (1) that continuously supplies, to a blow molding die, parison sections (Ps) of a parison (P) discharged from an extrusion die (10), the parison section having a specified length. The parison supply device includes a plurality of tension chucks (2) and a tension chuck operation unit (3) that operates the plurality of tension chucks (2). The tension chuck operation unit (3) causes the individual tension chucks (2A and 2B) to perform a repeated operation of grasping the parison (P) at a first position (I) near the extrusion die (10) and moving to a second position (II) separated from the extrusion die (10) such that, before the preceding tension chuck (2A) is separated by a set distance (L) from the extrusion die (10) at the second position (II), the following tension chuck (2B) grasps the parison (P) at the first position (I), and then the parison section is supplied to the blow molding die.
摘要:
To prevent core misalignment when performs are stretched during blow molding, provided is a blow molding device 10a that blow molds a preform 20 into a container in a forming mold. The blow molding device 10 includes a support pin P1 that is disposed in the forming mold. The support pin P1 includes a head 13 that supports a bottom portion 24 of the preform 20, and a shaft 14 that is connected to the head 13 and that is displaceable upward and downward in a direction of an axis O 2 of the preform 20. The head 13 is provided, at one end thereof supporting the bottom portion 24 of the preform 20, with a concave portion 13c for receiving at least a part of the bottom portion 24.
摘要:
A blow molding machine which comprises a clamping device (1) including a body (2), tie bars (3, 3) horizontally supported on the body (2) to be longitudinally movable, a pair of platens (4, 6) supported on the tie bars (3, 3), and split mold dies (7, 8) provided on the side where the pair of platens (4, 6) face each other, and a driving device (9) for driving a blow pin (93) from below the split mold dies (7, 8). The driving device (9) is supported by the pair of platens (4, 6) or the tie bars (3, 3).
摘要:
A heating blow forming apparatus comprising a feeding unit (110), a heating station (112), a transfer unit (114) and a blow forming station (116) which are arranged linearly in the direction A of the conveyance of preforms (118). The feeding unit (110) feeds the preforms (118) having neck portions in inverted postures. The heating station (112) heats a plurality of the preforms (118) simultaneously while they are conveyed in parallel in inverted postures. The transfer unit (114) transfers the preforms (118) heated by the heating unit (112) while they are kept in inverted postures. The preforms (118) transferred by the transfer unit (114) are subjected to blow forming simultaneously by the blow forming station (116) while they are kept in inverted postures to form a plurality of vessels.