The present invention relates to a mold for molding hollow bodies from parisons. It is the object of the invention to provide such a mold having a closing mechanism, which allows the mold to be securely held closed even under high pressure and which is in addition easy to clean. The object is achieved according to the invention by a two-part mold (1a, 1b) for molding hollow bodies, in particular containers, from parisons by way of a gaseous or liquid pressure medium introduced under pressure into the parison, in which at least a part of the mold (1a, 1b) is supported so it is rotatable about an axis of rotation (3), and therefore the two parts are transferable from an open position into a closed position, and wherein each mold part (1a, 1b) is connected to one end of a toggle lever (4a, 4b) so it is rotatable about an axis (5a, 5b) parallel to the axis of rotation (3). The two other ends of the two toggle levers are connected to one another and to an actuating mechanism (7, 8, 9) so they are rotatable about an axis (6) parallel to the axis of rotation. The mold is characterized according to the invention in that the toggle levers (4a, 4b) are located shortly before their dead center in the closed position of the mold and the actuating mechanism (7, 8, 9) exerts an elastic force on the connecting axis (6) of the toggle levers (4a, 4b) in the direction of their dead center.

The present invention relates to a mold for molding hollow bodies from parisons. It is the object of the invention to provide such a mold having a closing mechanism, which allows the mold to be securely held closed even under high pressure and which is in addition easy to clean. The object is achieved according to the invention by a two-part mold (1a, 1b) for molding hollow bodies, in particular containers, from parisons by way of a gaseous or liquid pressure medium introduced under pressure into the parison, in which at least a part of the mold (1a, 1b) is supported so it is rotatable about an axis of rotation (3), and therefore the two parts are transferable from an open position into a closed position, and wherein each mold part (1a, 1b) is connected to one end of a toggle lever (4a, 4b) so it is rotatable about an axis (5a, 5b) parallel to the axis of rotation (3). The two other ends of the two toggle levers are connected to one another and to an actuating mechanism (7, 8, 9) so they are rotatable about an axis (6) parallel to the axis of rotation. The mold is characterized according to the invention in that the toggle levers (4a, 4b) are located shortly before their dead center in the closed position of the mold and the actuating mechanism (7, 8, 9) exerts an elastic force on the connecting axis (6) of the toggle levers (4a, 4b) in the direction of their dead center.

A device including a drive mechanism and a mold carrier that is divided into a first part (3a) and a second part (3b) which are configured to hold a respective section (2a, 2b) of a mold for forming a hollow container from a parison through the introduction of a gaseous or liquid pressurized medium under pressure into the parison. The first part (3a) is connected to the drive mechanism (6) by a first part connection region (7a) and is rotatable by the drive mechanism about an axis of rotation (A) such that the first part and the second part are transitionable between an open position and a closed position relative to each other. The first part connection region passes through a protective wall (8) that is arranged between and separates the mold carrier from the drive mechanism and thereby protects the drive mechanism against contamination on the mold carrier side.

Blowing mold (10, 100) for blowing thermoplastic material containers, comprising two half molds (1, 2) and a device for the cyclic opening and closing of the half molds (1, 2) which comprises a control shaft connected to the half molds by means of connecting rods (14, 20) and a control hub (15). The control hub is provided with a plurality of holes appropriately positioned so that by choosing the holes to which the connecting rods are hinged, it is possible to change the maximum opening angle of the mold.

Moving servo motors of molds in synchronization with the operations of platens which enables fine patterns or shapes to be formed even on a large molded article. A mold clamping device forms patterns or the like on a molded article by detecting a mold position of a second platen among first, second, third platens with digital mold opening/closing position detector, and driving servo motors for molds of the molds in synchronization with a digital mold opening/closing position signal from the digital mold opening/closing position detector.

A blowing or stretch-blowing machine for preforms made of polymer material. The blowing or stretch-blowing machine (1) has a plurality of molds (1) movable on a transport system, in which each of the molds (1) comprises a first half-mold (2a) and a second half-mold (2b) hinged around a hinge axis (3) and a bottom plate (4) adapted to cooperate with the half-molds (2a, 2b) for closing the bottom of the mold (1), and a mechanism for vertical/translational movement of the bottom plate, to cyclically form a closed cavity adapted to receive a preheated preform and allow expansion, by blowing or stretch-blowing of the preform inside the cavity, to obtain a bottle or container. Each of the molds (1) comprises a system for synchronized opening/closing of the half-molds (2a, 2b) and of the bottom plate (4) actuated by an actuator thereof (30) independent from motorization of the machine.

Blowing mold (10, 100) for blowing thermoplastic material containers, comprising two half molds (1, 2) and a device for the cyclic opening and closing of the half molds (1, 2) which comprises a control shaft connected to the half molds by means of connecting rods (14, 20) and a control hub (15). The control hub is provided with a plurality of holes appropriately positioned so that by choosing the holes to which the connecting rods are hinged, it is possible to change the maximum opening angle of the mold.

A method for forming containers from preforms. The method includes loading successive preforms into successive molds at a mold loading station, each mold having a mold cavity in the shape of the containers to be produced. The containers being formed in a forming station by injecting a gaseous or liquid fluid into the preform in order to expand the preform and acquires the shape of the container defined by the mold cavity. The steps performed at the mold loading station and the forming station are distinct from each other, and a transferring step occurs at a transferring station arranged between the mold loading station and the forming station where successive molds containing the preforms are transferred from the mold loading station to the forming station.

An apparatus for forming a container generally comprises a first mold part having an injection mold portion and a blow mold portion and a second mold part having a core pin. The core pin is configured to cooperate with the injection mold portion in a first position to define an injection mold cavity for forming a preform and an integral cap. The core pin is also configured to cooperate with the blow mold portion in a second position to define a blow mold cavity for forming a receptacle from the preform. The cap may be closed at the blow mold portion to seal the receptacle. One or more threads may be formed on a neck of the container.

A control method for a mold opening/closing device including a hydraulic cylinder that opens and closes a mold, a hydraulic drive device that drives the hydraulic cylinder by supplying a hydraulic oil, and a controller that controls the hydraulic drive device, wherein the controller changes speed change in a deceleration region, in which movement of the hydraulic cylinder is decelerated, between a first half portion and a second half portion of the deceleration region, and causes speed change rate per unit time in the second half portion to be smaller than in the first half portion.