摘要:
An injection stretch blow-molding apparatus comprises an injection molding station (12) for simultaneously injection-molding preforms (28) each having a neck (110), a barrel (108), and a handle (80) which is formed adjacent to the boundary between said neck (110) and said barrel (108), and a blow molding station (14) for stretch-blow-molding the preforms (28) into containers (38). Said injection molding station (12) includes two injection core molds (58), a rotary member which rotates around a rotating shaft (52), an injection molding section (22) including one injection cavity mold (64), and an ejecting section (24). Said injection cavity mold (64) includes barrel cavities (70) for molding said barrels (108) of the preforms (28), and handle cavities (72) communicated with said barrel cavities (108) for molding said handles (80), when said handle cavities (108) are located at the outside of said barrel cavities (70) in the radial direction of said rotary member. The width of an outside part of said injection cavity mold (64) measured from the centerline of an array of said barrel cavities (108) in the radial direction of said rotary member is larger than the width of an inside part of said injection cavity mold (64) measured from the centerline.
摘要:
An injection stretch blow-molding apparatus comprises an injection molding station for simultaneously injection-molding preforms each having a neck, a barrel, and a handle which is formed adjacent to the boundary between said neck and said barrel, and a blow molding station for stretch-blow-molding the preforms into containers. Said injection molding station includes two injection core molds, a rotary member which rotates around a rotating shaft, an injection molding section including one injection cavity mold, and an ejecting section. Said injection cavity mold includes barrel cavities for molding said barrels of the preforms, and handle cavities communicated with said barrel cavities for molding said handles, when said handle cavities are located at the outside of said barrel cavities in the radial direction of said rotary member. The width of an outside part of said injection cavity mold measured from the centerline of an array of said barrel cavities in the radial direction of said rotary member is larger than the width of an inside part of said injection cavity mold measured from the centerline.
摘要:
An injection stretch blow molding apparatus has an injection molding station (12) and a blow molding station (14), with a transfer station (16) positioned therebetween. The injection molding station (12) has an injection molding section (22) which molds preforms (28) and a removal section (24) which removes the preforms (28) from an injection core mold. The blow molding station (14) carries out circulating transfer of carrying members (36) which support the preforms (28), and in the blow molding section (44) the preforms (28) are blow-molded into containers (38). The transfer station (16) has a receiving mechanism 54 which receives preforms (28) removed from the injection core mold in the injection molding station (12) in the upright state, an inverting receiving mechanism (58) which inverts the preforms (28) and passes them in the inverted state to carrying members (36), and between the receiving mechanism (54) and the inverting receiving mechanism (58), a movement mechanism (56) transferring the preforms (28) from the receiving mechanism (54) to the inverting receiving mechanism (58).
摘要:
An stretch blow molding apparatus having a heating section (42) and a blow molding section (44), which are disposed along a carrying path used to carry preforms (28) each having a handle (80) in an intermittent manner. The preforms (28) are rotated around their axes through a chain (110) and sprockets (102) when they are carried in the heating section. A stand-by section (50) is located between the heating section (42) and the blow molding section (44). The stand-by section (50) includes guide plates (116, 118) which function as arrangement means for arranging the handles extending from the respective preforms (28) in a given direction. Thus, all the handles (80) can be oriented in a direction in which the preforms (28) are carried. This can also prevent the handles (80) from being caught in a blow cavity mold (48).
摘要:
An injection stretch blow molding method sequentially circulates a plurality of neck mold moving units (20) for supporting and conveying neck molds adapted to hold the neck portions of hollow containers and preforms used to mold the hollow containers at least through preform injection molding (10,20), blow molding (16) and ejecting stations (18), the preform injection molding step, the blow molding step for blow molding the hollow containers from the preforms having their potential heat provided by the injection molding step and the product ejecting step being repeatedly carried out. The injection molding stations of M in number are provided for blow molding stations of N in number (M>N≧1). Preforms are injection molded in each of the injection molding stations at an injection molding start time staggered from those of the other injection molding stations by time equal to N×T/M where T is an injection molding cycle time in each of the injection molding stations. The neck mold moving units are sequentially moved from the injection molding stations to the empty blow molding station after the respective one of the injection molding stations has molded the preforms. The preforms are blow molded into the hollow containers in the blow molding stations through their blow molding cycle time which is set within N ×T/M.
摘要:
A stretch blow molding apparatus having a heating section (43) and a blow molding section (44) which are disposed along a carrying path used to carry preforms (28) each having a handle (80) in an intermittent manner. The preforms are rotated around their axes through a chain (32) and sprockets (30) when they are carried in the heating section (43). An insulating shutter (104) is provided in the heating section (43) in order to thermally insulate a neck portion (110) of the preforms (28).