摘要:
A multiple-stage fluid operated actuator (100) is provided. The multiple-stage fluid operated actuator (100) comprises a housing (101) including a first bore (212) with a first cross-sectional area and a second bore (215) with a second cross-sectional area. The multiple-stage fluid operated actuator (100) further comprises a piston assembly (210) including a first piston (210a) movable within the first bore (212) and a second piston (210b) movable within the first and second bores (212, 215). The piston assembly (210) separates the first and second bores (212, 215) into a first fluid chamber (214a) selectively in fluid communication with a pressurized fluid source (220) or an exhaust, an airtight second fluid chamber (214b), and a third fluid chamber (214c) selectively in fluid communication with the pressurized fluid source (220) or the exhaust.
摘要:
The machine is adapted to shape from a preform (2) and fill with liquid successive containers (1) in forming stations (24) comprising a main station (25, 25a, 25b, 25c) and an elementary station (23, 23a, 23b, 23c). The machine comprises a series of elementary stations (23, 23a, 23b, 23c) moving along a first closed loop (18) and a series of main stations (25, 25a, 25b, 25c) moving along a second closed loop (61), the first closed loop (18) and the second closed loop (61) comprising at least one common part wherein the main stations (25, 25a, 25b, 25c) are coupled with the elementary stations (23, 23a, 23b, 23c) and a distinct part wherein the main stations (25, 25a, 25b, 25c) are separated from the elementary stations (23, 23a, 23b, 23c).
摘要:
A method and molding system for hydraulic blow molding of a container from a preform. The method precharges the molding medium within a fill head unit to a precharge pressure. During the injecting of the molding medium into the preform, the method further increases the pressure of the molding medium to a pressure greater than the precharge pressure.
摘要:
A method for producing a container from a preform comprising a body (4) and a neck (6) defining an inner cylindrical opening (10), comprises the following steps: - placing the preform (2) in a mold comprising a molding cavity, - forming the container (1) by injecting a forming fluid in the preform (2), - filling the container (1) with a liquid. Prior to the forming of the container (1), an extension device (14) is attached to the neck (6) of the preform (2), said extension device (14) comprising an extension part (24) defining an inner opening (26) extending in the continuity of the inner opening (10) of the neck (6), said extension device (14) remaining attached to the neck (6) of the preform (2) at least during the forming and the filling steps.
摘要:
The invention relates to a device for blow moulding containers. A preform consisting of a thermoplastic material is stretched by a stretch rod after thermal conditioning inside a blow mould and is shaped, by the effects of blowing pressure, so as to form the container. A positioning specification for the stretch rod is achieved using a linear drive. The blowing pressure is generated using at least one positionable blowing gas supply. The linear drive is at least intermittently mechanically coupled to said positionable blowing gas supply and stretch rod, such that a defined motion kinematic is implemented. The coupling means and the coupled elements are constructed such that the axes of motion and the resulting force-effect axes form a common spatial axis.
摘要:
Assembly (30) of a preform (32) and a station (34) for hydroforming a container from the preform, wherein: - the preform has a neck (44) extending along an axial direction (D), the neck comprising a support ring (46), and a finish (48), - the station comprises a mold (36) in which the preform is placed, the support ring being in contact with a support surface (56) of the mold, - the station comprises an injection nozzle that is movable along the axial direction with respect to the mold from a retracted position to an intermediate position, wherein a contact is established between a first contact surface (72) of the nozzle and the finish, and further to an injection position, wherein a second contact surface (74) of the nozzle abuts on an abutment surface (76) and the neck is axially compressed between the support surface and the first contact surface, the first contact surface being less deformable than the neck in the axial direction, and - the station is adapted for injecting a liquid from the nozzle into the preform when the nozzle is in the injection position, and the abutment surface is fixed along the axial direction with respect to the mold at least during the injection.
摘要:
A multiple-stage fluid operated actuator (100) is provided. The multiple-stage fluid operated actuator (100) comprises a housing (101) including a first bore (212) with a first cross-sectional area and a second bore (215) with a second cross-sectional area. The multiple-stage fluid operated actuator (100) further comprises a piston assembly (210) including a first piston (210a) movable within the first bore (212) and a second piston (210b) movable within the first and second bores (212, 215). The piston assembly (210) separates the first and second bores (212, 215) into a first fluid chamber (214a) selectively in fluid communication with a pressurized fluid source (220) or an exhaust, an airtight second fluid chamber (214b), and a third fluid chamber (214c) selectively in fluid communication with the pressurized fluid source (220) or the exhaust.
摘要:
A method and molding system for hydraulic blow molding of a container from a preform. The method precharges the molding medium within a fill head unit to a precharge pressure. During the injecting of the molding medium into the preform, the method further increases the pressure of the molding medium to a pressure greater than the precharge pressure.
摘要:
Eine Vorrichtung (1) zum Umformen von Kunststoffvorformlingen (10) zu Kunststoffbehältnissen (20), mit einem bewegbaren Träger (2), an dem eine Vielzahl von Umformungsstationen (40) angeordnet ist, wobei diese Umformungsstationen (40) jeweils Hohlräume ausbilden, in denen die Kunststoffvorformlinge (10) durch Beaufschlagung mit einem fließfähigen Medium zu den Kunststoffbehältnissen expandierbar sind, und wobei die Umformungsstationen (40) jeweils Beaufschlagungseinrichtungen (42) aufweisen, welche die Kunststoffvorformlinge (10) mit dem fließfähigen Medium beaufschlagen sowie Reckstangen (8), welche in einen Innenraum der Kunststoffvorformlinge (10) einführbar sind, um diese Kunststoffvorformlinge (10) in ihrer Längsrichtung (L) zu dehnen, und wobei die Vorrichtung mindestens eine Antriebsanordnung (30) aufweist, um die Beaufschlagungseinrichtungen (42) relativ gegenüber dem Kunststoffvorformling (10) zu bewegen. Erfindungsgemäß weist die Antriebsanordnung (30) wenigstens eine erste Ventileinrichtung (34) auf, wobei eine Änderung eines Schaltzustands dieser Ventileinrichtung (34) die Entfernungsbewegung der Beaufschlagungseinrichtung (42) auslöst und die Umformungsstation (40) ein Sicherungsmittel (36, 54, 56, 46) aufweist, welches auch bei einem Ausfall eines Elementes der ersten Antriebsanordnung (30) eine Entfernung der Beaufschlagungseinrichtungen (42) von dem Kunststoffvorformling in Abhängigkeit von einem in dem Behältnis zu einem vorbestimmten Zeitpunkt bestehenden Druck bewirkt oder freigibt, indem eine Änderung des Schaltzustands der Ventileinrichtung (34) erzwungen und/oder umgangen wird.