Sensor cutting

A sensor cutting machine is an automatic device designed to cut a material based on a visual marker, a print, or a detectable space. Unlike a machine that operates solely with a programmed length, it adjusts the position of each cut to respect the marking present on the substrate.

The photoelectric sensor analyses the material as it moves and detects a difference in contrast, a printed marker, or the separation between two elements. Once the marker is identified, the machine automatically positions the blade in the correct place. This operation allows for regular and properly aligned cuts across an entire series.

A machine with a sensor is recommended when the position of the cut must respect a print, a pattern, or a specific area of the material. It is particularly suitable for preparing printed labels, marked films, technical tapes, or substrates with repetitive markers. It helps to limit shifts and positioning errors.

According to the machine, it is possible to cut printed labels, textile ribbons, Velcro®, elastic bands, cords, plastic films, and various technical materials. Compatibility depends on the width, thickness, and rigidity of the substrate, as well as the sensor's ability to correctly distinguish the marks.

A programmed cut occurs after the unwinding of a length defined by the operator. A cut with a sensor is triggered when the machine detects a mark or a separation on the material. The sensor is therefore preferable when the prints or elements are not always positioned at a perfectly regular distance on the roll.

Yes. The sensor can detect the space or mark located between the labels in order to position the cut without damaging the print. However, the detection must be compatible with the colours, transparency, and contrast of the substrate. A test with the actual roll used allows for checking the reliability of the detection before production.

The automatic stacking collects and organizes the labels or pieces after they are cut. It limits manual handling, prevents finished elements from accumulating in a disordered manner, and facilitates their retrieval in batches. This function is particularly useful for repetitive productions and high industrial speeds.

The choice depends on the material, its dimensions, the type of marker to be detected, the desired speed, and the quantity of parts to be produced. It is also necessary to determine if an automatic stacking system is required. DERFI can conduct tests with the used roll to control detection, cutting positioning, and the quality of the result.