3DIntelligent vision technology provides a complete solution that integrates 3D scanning, measurement, and control. Realize online quality inspection of rubber and tires, such as rubber extrusion profile, rubber belt positioning and joint position control, rubber offset control, drum and dent detection, out of roundness, and tire pattern and DOT code recognition.

Why is it needed3DDetection

» Volume measurement (X, Y, and Z directions) provides shape and position related parameters

» It is an ideal solution for detecting objects of the same color or low contrast when the contrast is not very obvious

» Not affected by lighting changes and ambient light

» Due to the integrated optics, lighting, and factory pre calibration, higher repeatability can be achieved

» Easy to form multi-sensor networks for scanning large workpieces

Rubber extrusion profile detection

High speed, high-density contour measurement

Real time monitoring of the pattern grooves, patterns, dimensions, and positions of rubber extrusion surfaces at production line speed is very challenging. Due to the constant transformation of the tested product, the task of measuring the extruded surface of rubber has become more complex. This means that an effective scanning detection scheme must have high-speed scanning capabilities and flexible measurement methods to ensure tire quality and reduce material waste rates.

3DIntelligent Visual Inspection Solution

3DIntelligent sensors can provide high-speed, high-density contour measurement, and even accurate scanning data for raw tires with high reflectivity on the surface. In addition, 3D smart sensors provide a powerful tool specifically designed for measuring grooves and patterns, which is designed for measuring the shape of rubber extrusion. These built-in and user configurable measurement functions include length, width, height, depth, angle, vertex position, tread groove size, and many more common tire measurement requirements.

Flexible and powerful:

» Support multiple pattern groove detection in a simple setup

» Pattern groove measurement is not affected by changes in the angle between the sensor and the object surface

» For larger extrusion cross-sections, multiple sensors form a measurement network to achieve a larger measurement field of view

» The measured values can be communicated over the factory network via Gigabit Ethernet

Rubber strip positioning and joint position control

Three dimensional tread length, width, depth, contour, and joints

Rubber tape positioning

When various rubber bands (such as curtain layers, rubber strips, and bead fillers) are to be wrapped around a drum, 3D smart sensors scan the edges of the rubber bands to ensure they are in the correct position. Its built-in rubber band positioning measurement tool allows users to configure parameters without the need for any additional measurement software. These tools include pattern groove positioning, depth measurement, monitoring, and automatic calibration.

Joint control

During tire molding, 3D intelligent sensors are used to detect issues such as gaps, overlaps, bends, and material wrinkles at the joints and splices of rubber bands.

Rubber offset control

High speed, high-density contour measurement

3DIntelligent sensors scan whether the target object exists, the width of the target object, and whether important components overlap, such as layered rubber strips and rubber bands. In order to perform layered scanning, 3D intelligent sensors scan the rising edge of the rubber extrusion surface and use it as a reference point to guide and locate other rubber material layers, while scanning the edge of this extrusion surface requires three-dimensional depth measurement.

Can be applied to:

» Rolling roller inspection

» Feed bandwidth and thickness detection

» Measurement of pattern groove/concave convex depth

» Finished layer and steel cord fabric inspection

» Pattern strip and shoulder detection

Finished tire inspection

Complete 3D surface data

Drums and dents

The finished tire inspection system needs to detect dents and bulges as small as 25 µ m, which are surface defects inside the tire and can occur at any position on the sidewall. In order to improve product quality and safety, these small defects and deficiencies need to be detected and eliminated using very reliable methods. The speed of simultaneous detection is also very important. Usually, in order to meet the requirements of production efficiency, the tire can complete comprehensive quality inspection by only rotating onceQuantity testing.

roundness error

Radial runout occurs when the distance from any point on the edge of the tire to the center does not match the tire radius. When the tire rotates, too much radial bouncing causes up and down vibration, or "jumping". Lateral bounce refers to the lateral movement or "shaking" that occurs when a tire rotates.

Tire patterns andDOTCode recognition

Height map imaging for automatic code recognition

DOTCode recognition

There are many raised or depressed character information on the tire sidewall. These include identification codes for sorting tires, as well as point codes for tracking vehicle identification numbers during assembly. Traditional two-dimensional image and feature recognition solutions cannot be used for tire sidewall detection because the black concave convex characters on the same black tire result in zero contrast.

3DIntelligent Visual Inspection Solution

3DVisual inspection solves this challenge by generating height maps of concave and convex characters. Its own driver program GenTL sends the height map data to suitable third-party software for automatic character recognition. When the tire rotates, such as in uniformity detection, encoder synchronization is supported, which allows seamless scanning of multiple sensors.