Synchronous running safeguard for transfer stations for devices for handling containers, and a device and a method for blow-molding containers

A device for blow-molding containers made of a thermoplastic material, comprising:

• at least two treatment stations with tools for receiving and holding preforms;
• at least one transfer device for transfer of the preforms from one of the treatment stations to a further one of the treatment stations with tools, which are designed for removing the preforms from the treatment station, for the transport of the preforms to the further treatment station and for passing the preforms on to the further treatment station, wherein at least one of the treatment stations and/or the at least one transfer device comprise at least one mechanical control device for defining movement of the tools, wherein the tools in their movement relative to one another have an engagement region and are arranged relative to one another so that movement of the tools during normal operation takes place without contact;
• and individual drives for driving the treatment stations and/or the transfer device, the individual drives being synchronized in terms of control, wherein the tools of at least one of the treatment stations and/or of the transfer device are movable out of the engagement region in event of a fault through a movement of at least one section of the control device.

A method for securing tools for receiving and for transporting preforms or containers made of a thermoplastic material in devices for blow-molding with at least two treatment stations, and with at least one transfer device for transferring the preforms from a treatment station to a further treatment station with tools, with which the preforms are removed from the treatment station, are transported to a further treatment station and transferred to the further treatment station, the method comprising the steps of:

• moving the treatment stations and/or or the transfer device with individual drives that are synchronized in terms of control, wherein the tools in their movement relative to one another have an engagement region;
• arranging the tools relative to one another so that the movement of the tools takes place without contact during a normal operation;
• and controlling movement of the tools by a mechanical control so that the tools of at least one of the treatment stations and/or of the transfer device are moved in event of a fault out of the engagement region in by a movement of at least one section of the control device.