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Detection of Rubber Splices with High-Precision Laser Distance Sensors

The manufacture of car tires requires a large number of rubber layers, which must meet various requirements at different points in the tire. This involves overlapping individual strips, which is also called splicing. These overlapping layers must be detected by sensors during operation at speeds up to 0.5 m/sec. For this purpose, two high-precision laser distance sensors are installed above the conveyor belt, which reliably monitor the splicing using differential measurement. A switching frequency of 1 kHz is even possible on dark, light-absorbing surfaces.

High-Precision Laser Distance Sensors

High-precision laser distance sensors work according to the principle of angle measurement, whereby color, shape and object surface do not influence the measurement. Depending on the setting, they can be operated at very high speed or resolution. The measuring range can be selected individually within the sensor’s working range.

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