New range of fork sensors with world's first combined fork sensor, the GSX 14E
Fork sensors for labeling machines used in the packaging industry
The packaging industry uses labels of various formats, sizes, materials, and textures that are affixed to products and packaging by means of labeling machines. The accuracy of the label placement is very important in this process. Label placement describes the precise positioning of the label on the product or packaging, even at high conveyor speeds. To achieve this kind of high label placement accuracy, it is critical that the labels are reliably detected. This is where fork sensors come in. Fork sensors combine transmitter and receiver into a single device and therefore feature high operational reliability. They are characterized by simple mounting without the need for alignment as well as high sensitivity.
A world’s first: GSX14E 2-in-1 fork sensor
The GSX fork sensor is the world's first sensor of its kind and combines the two detection methods of ultrasonics and light in a single housing. It brings together the advantages of both principles and can be used very flexibly. It reliably, quickly, and precisely detects a wide range of labels, regardless of their material and surface characteristics. Even labels made of inhomogeneous cavitated BOPP material can be reliably detected through the optical operating principle. The fork sensor is thus especially suitable for applications where a wide range of labels need to be detected, which, in the past, frequently required the use of multiple different sensors.
- Universal use for the detection of all types of label materials.
- The user saves not only space, but also additional time and costs of installation.
- Perfect for labeling machines that are operated with various label types.
Advantages for you
- The reliable detection of labels of a wide range of materials and textures ensures high machine throughputs and prevents downtime.
- No reconfiguring of the sensor is required when switching label rolls. The shorter setup times result in higher production volumes.
- Quick and easy setup of the sensor through simply teaching in of the label/carrier combination via the teach button. Only one mounting position is required for all objects.
- Reliable operation even in case of contamination and variations in terms of label/carrier materials through automatic readjustment of the switching threshold.
- IO-Link for easy integration of additional functions in the machine control, e.g., simple format changeover when changing rolls via recipe management, remote teaching of the sensor, or locking of the buttons
Which sensor is right for which label-carrier combination?
|GSU12, (I)GSU14E |
Applications with labeling machines
Detection of non-transparent labels on label-carrier combinations
For position-accurate dispensing of non-transparent labels onto the products/packaging, it is critical to reliably detect the labels (or the gaps between two labels) on the carrier tape. Optical fork sensors must be capable of reliably detecting labels with challenging shapes (e.g., round or oval) to prevent machine downtime or inaccurate dispensing due to unreliable detection. The fork sensor must be easy to set up for all types of labels.
The GS61 and GS63B optical fork sensors reliably detect all non-transparent labels – even those with irregular shapes and outlines. This means that machines can be fitted with only one fork sensor, regardless of the application. The fork sensors are also easy to set up, either with a potentiometer or by means of the single button teach function. The slimline-design (reduced fork height) allows the sensors to be installed close to the dispensing point.
Detection of transparent or semi-transparent labels on label-carrier combinations
For position-accurate dispensing of labels onto the products/packaging, it is critical to reliably detect the labels (or the gaps between two labels) on the carrier tape. Using ultrasonic technology, the fork sensor can easily detect transparent or semi-transparent labels with challenging shapes (e.g., round or oval) to prevent machine downtime or inaccurate dispensing due to unreliable detection. The fork sensor must be easy to set up for all types of labels.
The GSU12, GSU14E, and IGSU14E ultrasonic fork sensors can reliably detect all types of labels – whether the labels are semi-transparent or not. This means that machines can be fitted with only one fork sensor, regardless of the application. The GSX14E fork sensor, which combines an ultrasonic and an optical system in a single housing, can even reliably detect labels made from inhomogeneous cavitated BOPP material.
Highlights of the product range
GSU14E with IO-Link: simple configuration + recipe management possible
Often it is necessary for a single labeling machine to detect various label formats that are made of a wide range of materials. In order to avoid additional setup time or re-teaching the fork sensor when changing rolls to a new type of label, the IO-Link interface can be used to carry out a convenient format changeover to a different label type by simply uploading the respective teach value of the label to the fork sensor.
- Convenient format changeover to a different label type by uploading the respective parameter set including teach value to the fork sensor
- No setup time and no re-teaching of the fork sensor when changing rolls
- Easy format change by selecting the appropriate parameter set for the corresponding label format
- Convenient selection of the parameter set directly via the HMI (Human Machine Interface)
IGSU14E with easyTeach and ALC function
Simple configuration via two buttons and auto complete easyTeach function. ALC (Auto-Level-Control) for automatic sensitivity readjustment during operation.
- Automatic readjustment saves repeated setting in the case of varying material characteristics of the labels or the carrier, thereby reducing system downtime
- Significantly higher functional reliability by means of switching threshold optimization
- Reduced downtimes due to material changes for labels or carriers
IGSU14E for splice detection
Suitable for the safe detection of splices on paper, film, or plastic webs. With integrated paper tear detection. Simple teach process on sheet with or without moving splice. Switching signal with pulse stretching (can be switched off). Display of teach errors or paper tears via warning output or IO-Link interface.
Technical properties of the new fork sensors
|Detection principle||Ultrasonics||Ultrasonics||Ultrasonics||Ultrasonics + Optical|
|Switching frequency||~ 1.75 kHz||~ 2 kHz||~ 2 kHz||Ultrasonics: ~ 2 kHz |
Optical: ~ 9 kHz
|Response time||< 0.24 ms||< 0.2 ms||< 0.2 ms||Ultrasonics: < 0.2 ms |
Optical: < 0.05 ms
|Operation||1 teach button||2 buttons||2 buttons||2 buttons|
|Teach possibilities||Manual teach||Manual teach||EasyTeach, static teach||EasyTeach, static teach|
|IO-Link||–||V1.1 (SmartSensorProfile, COM3)||V1.1 (SmartSensorProfile, COM3)||V1.1 (SmartSensorProfile, COM3)|
|Housing dimensions||96 × 22 × 46.9 mm||96 × 22 × 46.9 mm||96 × 22 × 46.9 mm||96 × 22 × 46.9 mm|
|Housing material||Metal, diecast zinc (powder-coated)||Metal, diecast zinc (galvanically nickel-plated)||Metal, diecast zinc (galvanically nickel-plated)||Metal, diecast zinc (galvanically nickel-plated)|
|Mouth width||4 mm||4 mm||4 mm||4 mm|
|Mouth width||80 mm||80 mm||80 mm||80 mm|
|Connection||M12 5-pin (horizontal plug outlet)||M12 5-pin (horizontal or vertical plug outlet)||M12 5-pin (horizontal or vertical plug outlet)||M12 5-pin (horizontal or vertical plug outlet)|
|Degree of protection||IP 65||IP 65||IP 65||IP 65|