For hollow glass manufacturing, Siemens Motion Control solutions are used during the forming of glass containers. Whereas IS machines (IS = Individual Section) with blow-blow and press-blow processes are used mainly in the mass production of glass bottles, rotary machines are characterized by higher flexibility and the additional application of centrifugation and pressing technologies.

IS Machine

The Individual Section (IS) machine is the process most commonly used for hollow glass production. It is used primarily for the production of mass goods, in particular, beverage bottles.

An IS machine is a series of individual production modules (sections) that produce containers independently of each other. Above the machine, the supply unit located at the feeder head cuts with cooled cutters individual glass drops that are then fed to the production sections via the drop distributor and a gutter system.

In the stations, the glass melts are processed to form finished containers by means of the blow-blow or press-blow process and transported to the cooling belt via a transport belt. The machines are driven pneumatically and for more recent types via electrical servo drives fully-automatic.

Example Solution

Speed and precision are some of the most important properties of IS machines. Consequently, they place the highest demands on the automation and drive technology. Siemens with the SIMOTION D motion controller supplies the ultra-fast clock generator of an IS machine. The modules of the IS machine (plunger, cutter, drop distributor and the individual stations) are synchronized exactly with each other using the SIMOTION "distributed synchronous operation" functionality.



SIMOTION D motion controller for a modular architecture

High performance SINAMICS S120 drive

SIMOTICS Servo Motors

Strictly Modular Design

• The throughput of an IS machine can be scaled by the number of modules or also extended subsequently
• Identical sections are controlled by SIMOTION
• SIMOTION controllers are synchronized exactly with each other

SIMOTION routes safety-relevant signals directly to the SINAMICS drive

• Many safety functions implemented in the drive without requiring additional hardware


  • Exact synchronization
    between the modules of the IS machine: SIMOTION D motion control controller as ultra-fast clock generator

  • Modular architecture
    with SIMOTION simplifies the integration, maintenance and expandability

  • Improved productivity / safety
    thanks to safety technology integrated in the SINAMICS S120 drive

Rotary Machine

Rotary machines are used primarily in the production of high-quality drinking vessels (e.g. wine glasses). Various glass forming processes are deployed.

Blow-blow and press-blow processes are found most frequently in hollow glass production. The glass product is manufactured in two steps: In a preform, the so-called gob is created (blow or press process); the final form is blown in the second process step.

For the pressing, the glass melt is first fed into the form after which the pressing punch is lowered hydraulically or pneumatically into the form. After solidification, the punch is withdrawn.

During the centrifugation, a low viscosity glass melt is fed into the form. The form is then rotated to distribute the glass.

Example Solution

Servo pump for hydraulic glass pressing

Although most drives in modern rotary machines are purely electrical, there are applications in which hydraulic drives are used to advantage. The most prominent example is the glass press. A conventional hydraulic system based on valve technology, however, wastes a large amount of energy in the phases of the pressing process in which the pressing cylinder does not need to perform any work although the motor must continue to run.

If, however, the asynchronous motor is replaced with a highly-dynamic servomotor, it is possible to supply only the amount of energy actually required in the associated phase of the pressing process. The power consumption so can be reduced by as much as 50%.



High performance SINAMICS S120 drives


SIMOTICS Servo Motors

Operating Mechanism Types


Servomotors without gearbox ("direct drives"): Torque motors, segment motors

Rotary indexing table (when highest demands are placed on the dynamic response and reproducibility)

Servomotors with gearbox (drive decentralized on motor or central in the control cabinet)

Rotary indexing table (when normal demands are placed on the dynamic response and reproducibility)
Other drives on rotary machines (in particular: press-blow modules, blow-blow modules, glass product transport)

Servomotors with hydraulic gearbox: Servo pump

Pressing cylinder for glass automatic presses


  • From a single source
    The automation and the complete drive train for rotary machines can be implemented completely with Siemens technology

  • Low-cost configuring, maintenance and upgrade
    with drive solutions that can be implemented directly in the SINAMICS S120 drive control unit

  • Innovative solutions
    such as servo pump for hydraulic glass presses and segment motors for rotary indexing tables