The Rotomatic 5 drive control panel from Dynaspede is a drive panel tailor-made to suit unwind, rewind and intermediate sections on a rotogravure printing press. It comprises the following sections:

Unwinder drive

Here tension of the web entering the Infeed section is controlled. Actuation can be through a magnetic particle brake or pneumatic brake or DC motor or AC motor, depending on the application and the client’s requirement. Tension-sensing load cells or position sensor of a dancer can be used for feedback. Tension controller along with vector controlled digital AC drive or digital DC drive ensures that set tension is maintained throughout the roll turndown. Provisions for GD2 compensation and profile gain setting are some of the site adjustable features.

Infeed

The Infeed nip unit drive pulls the substrate off the unwinding roll and simultaneously ensures that tension in the span between the Infeed section and the first printing station remains constant.

Main drive

A single AC or DC motor through the line shaft powers all colour stations of the printing section. It is the pilot or master section of the rotogravure printing press. Speed can be set by means of push buttons and monitored by digital tension readout. The digital AC or DC drive ensures that set speed is maintained. Acceleration and deceleration times are adjusted on this drive.

Outfeed drive

The Outfeed unit establishes outlet tension values and isolates the processing section from tension disturbances of the rewinder. The principle of operation of the drive and controls in this section will be similar to that of the Infeed. The only difference is that while the Infeed will be operating at a speed slightly lower than the line speed, the Outfeed operates at a marginally higher speed.

Rewinder drive

The rewinder forms a roll out of the printed material. Tension control is either through load cell or dancer position feedback and digital vector controlled DC drive or digital DC drive. Provision for taper tension, GD2 compensation, profile gain setting are among the many site adjustable features.

5-Drive Rotogravure Press

Dynaspede offers the choice of operator control station. A freestanding floor-mounted panel as shown alongside can be offered.  Optional features include PLC with touch screen or PC-based system for storage of jobs. Temperature controls / indicators, electricals for exhaust / blower motors, heater controls and impressions nip controls can be provided on request.

Options like remote operator stations can also be conveniently located on the rotogravure printing press to aesthetically suit the machine being controlled.

Dynaspede control panels are fabricated from MS sheet that is adequately surface treated and finished to ensure long life in an industrially harsh environment. All electrical accessories used are of high quality.  The AC and DC drives used are available over a highly functional range. These are digital drives, based on sound ease-of-use principles, worldwide standards and above all, highly reliable.