Provided is an apparatus for transforming plastic preforms into plastic containers having at least one transforming station which has a blow molding device, within which the plastic preforms are able to be transformed into the plastic containers by application with a flowable medium, having an application device which applies the flowable medium to the plastic preforms and having a stretching device which has a rod-like body which is able to be introduced into the plastic preforms, in order to stretch the plastic preforms at least temporarily during their transforming process in the longitudinal direction thereof, wherein the stretching device has a drive device for moving the rod-like body as well as a control device for controlling the drive device and wherein the apparatus has a valve arrangement which controls the application of the plastic preforms with the flowable medium with at least two different pressure levels.

Disclosed is a machine for reshaping plastic preforms into plastic containers with at least one reshaping station, which has a blow moulding arrangement inside which plastic preforms can be reshaped into plastic containers by application of a flowable medium, and with an application device which is configured for applying a flowable medium to the plastic preforms, and with a valve arrangement with at least two valve devices which is configured for feeding the flowable medium under at least two different pressures to the plastic preform during the reshaping thereof. At least one valve device has at least one valve piston which is movable with respect to a valve housing between two valve positions, and a check piston which is movable between at least two positions is arranged on this valve piston.

Method for controlling a method for the manufacture of a container by stretch-blow-molding of a plastic preform (2) in a machine (1) including a mold (26), the preform (2) having a body (3), a neck (4) opening at one end of the body (3) and a bottom (5) closing the body (3) at another end thereof, the manufacturing method including the operations involving:heating the preform to a predetermined temperature in a thermal conditioning oven (10);introducing the preform (2) into the mold (26);moving a stretching pin (28) so as to stretch the preform (2); this control method involving a step that consists in determining the position of impact (P0r) of the stretch pin (28), namely the position it occupies at the moment at which it reaches the bottom (5) of the preform (2) during its movement.

An apparatus for forming plastic preforms into plastic containers having a transport device which transports the preforms to be formed along a predetermined transport path, wherein the transport device has a rotatable transport carrier on which a plurality of forming stations are arranged which each have a blow-molding device within which the preforms can be formed into the containers. The forming stations each have a pressurizing device which pressurizes the preforms with a flowable medium, i.e., compressed air, wherein the pressurizing device subjects the preforms to a preblowing pressure, at least one and preferably two intermediate blowing pressures, and a final blowing pressure. The apparatus has a detection device which is configured for detecting at least one value characteristic of the plastic container, wherein depending on this value characteristic of the container, the duration of the pressure rise time of at least one intermediate blowing pressure can be regulated.

Method for forming plastic preforms into plastic containers, wherein a preform is expanded into the container by exposure to a flowable medium, wherein the medium is stored under a first pressure in a first pressure reservoir and is stored under a second pressure higher than the first pressure in a second pressure reservoir, and the preform is subjected to a first blowing pressure via a flow connection between the first pressure reservoir and the preform and is subjected to the second blowing pressure via a flow connection between the second pressure reservoir and the preform and wherein at times the flowable medium is returned to the first pressure reservoir, and first values characteristic of the action of the medium on the preforms are predetermined taking into account the first values, second values are determined which are characteristic for a point or period in time of the return of the mediums into the first pressure reservoir.

A method for forming plastic preforms into plastic containers using at least one device for forming preforms into containers, wherein preforms are acted upon by a flowable and, in particular, gas-forming medium and are formed into the containers, wherein the preforms are acted upon with different pressure levels and the flowable medium is stored in at least two reservoirs and is supplied from these reservoirs to the preforms and at least one of these reservoirs is supplied with the flowable medium by a pressure supply device, wherein the target pressure in at least one reservoir is controlled, and wherein this target pressure is compared with an actual pressure in this reservoir. A value characteristic of this comparison is determined. An offset value is controlled on the basis of this value and is controlled in such a way that a predetermined pressure and the target pressure is set in the reservoir.

Disclosed is a method for forming plastic preforms into plastic containers, wherein a preform is expanded into the container by exposure to a flowable medium, wherein the flowable medium is stored under a first pressure in a first pressure reservoir and is stored under a second pressure higher than the first pressure in a second pressure reservoir, and the preform is subjected to first and second blowing pressures via a flow connection between the first and second pressure reservoirs, respectively. The preform and at least at times, the flowable medium is returned to the first pressure reservoir, wherein first values characteristic of the action of the flowable medium on the preforms are predetermined, wherein taking into account the first values, second values are determined which are characteristic for a period of time of the return of the flowable medius into the first pressure reservoir.

A method for forming plastic preforms into plastic bottles, wherein the plastic preforms are transported along a predefined transport path by a transport device in a plurality of forming stations arranged on the transport device, and at least at times during the transport, bombarded with a fluid medium for their expansion, wherein the plastic preforms in a first method step are bombarded by the fluid medium at a first pressure (p1) and in a further method step, temporally following the first method step, bombarded with the fluid medium at a second pressure (p2), wherein the second pressure (p2) is higher than the first pressure (p1). At least at times during the bombardment of the plastic preforms at the first pressure (p1), a volume flow of the fluid medium entering the container is increased.

The invention relates to a system for transforming plastics material preforms into plastics material containers having a plurality of blow molding stations which are arranged on a carrier and in each case comprise a blow mold for expanding plastics material preforms into plastics material containers inside this blow mold by means of a pressurized pneumatic medium which is supplied to the respective blow molding station via a pressure supply device and which is at least partially extracted again from the respective blow molding station after the expansion operation via a pressure extraction device. According to the invention it has an energy conversion device, with the aid of which at least part of the potential energy stored in an energy store can be turned into an increase in the potential energy of a pneumatic medium associated with at least one blow mold, wherein the energy conversion device has an intermediate energy storage device, and at least part of the potential energy extracted from the energy store, and the energy transmitted by the energy conversion device, can be stored in the form of kinetic energy in the intermediate energy storage device.

A method and device for forming plastic preforms into plastic containers has a plurality of forming stations each having application devices which apply a flowable medium at least a first pressure level, a second pressure level, a third pressure level and a fourth pressure level respectively, wherein the second pressure level is higher than the first pressure level, the third pressure level is higher than and the second pressure level and the fourth pressure level is higher than the third pressure level and wherein at least at times a bottom area of the plastic preform and/or plastic container is applied with the flowable medium.