Abstract: An inverting transfer mechanism of a blow molding apparatus for receiving preforms or blow-molded products that are upright or inverted and are transported along a first circular transportation passage, inverting a posture of the preforms or blow-molded products while transporting the preforms or blow-molded products along a second circular transportation passage, and transferring the preforms or blow-molded products to a third circular transportation passage.

Abstract: A blow molding apparatus that includes a preform supplying station for supplying preforms in an upright state, a heating station for heating the preforms to a suitable temperature condition for blow-molding while transporting the preforms, a blow station for blowing the heated preforms to form blow-molded products, and a collection station for collecting the blow-molded products.

Abstract: A mold opening/closing mechanism of a blow molding apparatus in which a plurality of blow-molding molds are transported along a circular transportation passage with a fixed feed pitch, and each blow-molding mold has a pair of molding dies capable of opening and closing in a lateral direction, including a turntable on which a plurality of blow-molding molds are mounted at intervals of a fixed angle; a vertical moving shaft that rises and falls as the turntable rotates; a slider that slides in a direction perpendicular to an opening/closing direction of the blow-molding molds as the vertical moving shaft rises and falls; and a pair of operation arms that convert sliding movement of the slider to opening/closing movement of the blow-molding molds.

Abstract: A first transfer mechanism of a biaxial stretch blow-forming apparatus has sliders that are transported along a circular transportation passage. The sliders slide along a circular guide rail installed on a turntable. Each of the sliders is swung to left and right by a swing arm as the turntable rotates, and a feed pitch of a preform holding groove formed in a holding plate installed at an end of each of the sliders is changed. The feed pitch can be changed by a simple mechanism. Because the holding groove always faces a radial direction, receiving and handing over actions of a preform sent along the circular transportation passage can be reliably performed.

Abstract: An inverting transfer mechanism of a blow molding apparatus for receiving preforms or blow-molded products that are upright or inverted and are transported along a first circular transportation passage, inverting a posture of the preforms or blow-molded products while transporting the preforms or blow-molded products along a second circular transportation passage, and transferring the preforms or blow-molded products to a third circular transportation passage.

Abstract: A mold opening/closing mechanism of a blow molding apparatus in which a plurality of blow-molding molds are transported along a circular transportation passage with a fixed feed pitch, and each blow-molding mold has a pair of molding dies capable of opening and closing in a lateral direction, including a turntable on which a plurality of blow-molding molds are mounted at intervals of a fixed angle; a vertical moving shaft that rises and falls as the turntable rotates; a slider that slides in a direction perpendicular to an opening/closing direction of the blow-molding molds as the vertical moving shaft rises and falls; and a pair of operation arms that convert sliding movement of the slider to opening/closing movement of the blow-molding molds.

Abstract: A blow molding apparatus that includes a preform supplying station for supplying preforms in an upright state, a heating station for heating the preforms to a suitable temperature condition for blow-molding while transporting the preforms, a blow station for blowing the heated preforms to form blow-molded products, and a collection station for collecting the blow-molded products.

Abstract: A first transfer mechanism of a biaxial stretch blow-forming apparatus has sliders that are transported along a circular transportation passage. The sliders slide along a circular guide rail installed on a turntable. Each of the sliders is swung to left and right by a swing arm as the turntable rotates, and a feed pitch of a preform holding groove formed in a holding plate installed at an end of each of the sliders is changed. The feed pitch can be changed by a simple mechanism. Because the holding groove always faces a radial direction, receiving and handing over actions of a preform sent along the circular transportation passage can be reliably performed.

Abstract: An injection blow molding system includes an injection molding station (22), a first delivery section (24), a cooling station (26), a heating station (30), a second delivery section (32) and a plurality of blow molding stations (34). The station (22) simultaneously injection molds M rows of N preforms (36) arranged in a second direction (B) perpendicular to a first direction (A) in which the preforms (36) are carried. The first delivery section (24) removes the M rows of preforms (36) using a removing mechanism (102) in their upright state while decreasing the pitch in the rows. The preforms 36 are inverted with the column pitch changed by an inverting mechanism (104) before delivery to the cooling station in their inverted state. The cooling and heating stations (26), (30) cool and heat one row of N preforms (36) while parallel carrying them along a first carrying chain (200). The second delivery section (32) delivers the preforms (36) to two blow molding stations while in their inverted state.

Abstract: A heat blow molding apparatus includes a supply section 110, a heating station 112, a transfer section 114 and a blow molding station 116, all of which are disposed linearly in a direction A in which preforms 118 are carried. The supply section 110 supplies the preforms 118 each having a neck portion in their inverted state. The heating station 112 simultaneously heats the inverted preforms 118 while they are being carried parallel to each other. The transfer section 114 transfers the inverted preforms 118 after they have been heated by the heating station. The blow molding station 116 simultaneously blow molds the inverted preforms 118 transferred from the transfer section 114 into containers.

Abstract: An injection blow molding system includes an injection molding station 22, a first delivery section 24, a cooling station 26, a heating station 30, a second delivery section 32 and a plurality of blow molding stations 34. The injection molding station 22 is designed to simultaneously injection mold M rows of N preforms 36 arranged in a second direction B perpendicular to a first direction A in which the preforms 36 are carried. The first delivery section 24 is designed to remove the M rows of preforms 36 injection molded by the injection molding station 22 through a removing mechanism 102 in their upright state while decreasing the pitch in the rows. The preforms 36 are inverted with the column pitch being changed by an inverting mechanism 104 before they are delivered to the cooling station in their inverted state. The cooling and heating stations 26, 30 are designed to cool and heat one row of N preforms 36 while parallel carrying them along a first carrying chain 200.

Abstract: A pressurized fluid feed system including a pressure compensating valve and directional control valve disposed between a hydraulic pump and a boom cylinder, and a pressure compensating valve and a directional control valve disposed between the hydraulic pump and a turning motor. Each pressure compensating valve comprise a check valve section and a pressure reduction valve section. The check valve section has an inlet port connected to the said hydraulic pump, an outlet port connected to the directional control valve, a spool for establishing and blocking communication between the inlet and outlet ports and a pressure chamber for applying pressure to the spool. The pressure reduction valve section has a first port connected to the said hydraulic pump, a second port connected to a reservoir, and a spool for establishing and blocking communication between the first and second ports.