Packaging

Corrugated – Converting – “Corrutack”

Thursday 14. June 2012 - Zero-defect production with "Corrutack-2"

Robatech presents a new generation of appliances for the converting industry: The system “Corrutack-2” is a new applicator system for coldglue for the gluing of flaps of corrugated board. It is suitable for flexo-folder gluer and in-line machines. An optional glue detection sensor supplements the applicator system for an impeccable production.
Problems on flap gluing
Nonconforming products in the converting industry are due to the following problems:
? Tearing and jamming of the board cutouts on passing through the gluing station.
? Inner gluing because the wheel applies glue right to the end of the flap.
? Drying up of the glue at the applicator nozzles in case of a production standstill.
? Fixed gluing stations impair a rapid change from top to bottom gluing.
? Different flap widths call for variable distances between beads in the interest of an optimal adaptation of the glue application.
“Corrutack-2” offers the ideal solution to these problems: transport, application and inspection take place without contact. Fast-changing glue station, rotatable applicator head, fast-changing nozzle with nozzle protection, integrated interfaces and checks enable a zero-defect production in top quality.
Board transport, glue application and checking function without contact
In the aperture of the double board guides the board is transported virtually without contact (even if the cartons are bent). An adaptation to variable board thicknesses is possible. Applying of the adhesive and inspection of the application are effected without contact. The system is made up of the central unit, the operating terminal, the feed pump, 1 to 2 gluing stations with twin applicator head, checking of the adhesive application (optional), hoses and cables. The control is the link between main machine, terminal, glue feeding, applicator system and checking function.
Fast-changing glue station to change between top and bottom gluing
The system can work with one or two gluing stations which can be fitted on the operator side and/or the drive side. If two stations exist, only one of them can be activated interdependently in each case. Each glue station can be changed from top to bottom gluing by simple plugging over without need for tools. The glue station consists of a top and bottom board guide. Firmly installed in the glue station are the laser scanner for board detection and the optional glue sensor (forked sensor).
Steplessly rotatable head (0-90°) for variable distance (0-32 mm)
The all-electric CTE twin-applicator head contains two ceramic nozzles. The nozzles can easily be exchanged and are available in five different sizes. The adhesive is applied without contact in bead form. The head can be rotated steplessly from 0 to 90° and thus enables a variable distance between adhesive beads from 0 to 32 mm. In this way the bead application can easily and quickly be adapted to different flap widths.
Nozzle protection with silicone cushion prevents drying out of adhesive
The nozzles of the applicator head are optimally protected against contamination and blocking by dried adhesive. They are covered by a slide with a silicone cushion every time production is interrupted. The necessary swivel mechanism is controlled by a solenoid valve and compressed air. Apart from protecting the nozzles from contamination, the process also ensures at the same time that the nozzles are cleaned. Contamination is reduced considerably and the effort for cleaning and maintenance minimized accordingly.
Operating terminal
The operating terminal has been developed especially for this application. lt is perfectly simple to operate and operators are familiar with it very quickly. This technology enables a rapid change from one order to the next (hardly any change-over times), errors are reduced and corrections can be made in the simplest manner and directly while production is progressing. A genuine benefit for the customers!
Integrated interfaces and integrated inspections for a faultless production
The system comprises interfaces integrated in the central control for the connection to the higher-ranking main machine, for the capture of management data (upload/download) and for a marking device to identify nonconforming cartons. The integrated inspections for the transport speed (encoder), the carton detection (laser scanner) and the optional glue detection (forked sensor) provide in their interaction with the interfaces a virtually fully automatic production process with self inspection and guaranteed top-quality, zero-defect production.