The following aspects can be considered when choosing a suitable visual screening machine:
Product type to be tested: Different products have different requirements for visual screening machines. For example, electronic components are small in size and high in precision, so the screening machine needs to have high-resolution and high-precision testing capabilities; while products in industries such as food and medicine may pay more attention to appearance integrity and hygiene standards, and have higher requirements for testing speed and stability.
Testing items: Clarify the specific content that needs to be tested, such as size measurement, appearance defect detection, color recognition, character recognition, etc. Some visual screening machines may have advantages in certain specific testing items. For example, a screening machine specifically used for screw detection can accurately detect the length, diameter, thread, etc. of the screws.
Testing accuracy: Determine the required testing accuracy based on the quality requirements of the product. For precision mechanical parts, electronic chips, etc., the accuracy may need to reach the micron level or even higher; while for some ordinary industrial products, the accuracy requirements are relatively low, and a screening machine with moderate accuracy can be selected to avoid excessive investment.
Surface control system
Consists of two workstations mounted above and below the glass plate, each containing a high precision colour camera and a fixed focus lens.
Has an independently digitally adjustable colour illumination system to optimise the image taking.
The main function is to detect cosmetic defects on the upper and lower surfaces.
Inner and outer surface control systems
Consists of outer side workstastions, each with four 2 megapixel colour cameras distributed at 90 degree angles. Each camera uses a low distortion lens. A further feature os that there are two colour lighting systems distributed above and below.
The lighting system can be adjusted digitally and independently to optimise the photographic image.
For the detection of surface defects on the outer side of the product.
Wirt is an optical inspection device specially developed to detect dimensional and surface defects in silicone waterproof plugs. It is capable of inspecting waterproof plugs of various shapes with high precision within its inspection range. These products are inspectied for defects by a series of inspection stations using high-precision industrial cameras. The images obtained by the cameras are transmitted without data loss or interference to a computer managed by a real-time system for image processing: through the operator interface, the user can interact with the operating system in a simple and intuitive way. The detection system is stable, reliable and efficient.
After image processing, objects are imported into three different storage areas for conforming, dimensionally defective and cosmetically defective objects according to the preset inspection criteria. The object inspection parameters are quick and easy to set, the equipment and the feeding device are easy to clean, and the inspection frequency is high.
Technical parameters | 12 |
Materials | Silica gel |
Colour | Full colour |
Minimum outer diameter(mm) | 3mm |
Maximum outer diameter(mm) | 12mm |
Minimum detectable thickness(mm) | 2mm |
Maximum detectable thickness(mm) | 12mm |
efficiency | Maximum speed 1000pcs/min depends on product surface and size. |
Feeding | Vibratory feeding |
Size Detection | 12 |
Camera | B/W |
Detection range(mm) | Φ18 |
Maximum Detection height(mm) | 12mm |
Resolution ratio(mm) | 0.001 |
Detection accuracy(mm) | +/-0.008 |
Repeated accuracy(mm) | +/-0.005 |
Height Measurement Inspection | 12 |
Detection range(mm) | 12mm |
Resolution ratio(mm) | 0.001 |
Detection accuracy(mm) | +/-0.008 |
Repeated accuracy(mm) | +/-0.005 |
Surface Workstation | 12 |
Camera | Full colour |
Individual camera detection range (mm) | 12mm |
Optical resolution (mm/px) | 0.010 |
Minimum detectable defect area (mm) | 0.030x0.030 |
Inner side inspection station (optional) | 12 |
Camera | Full colour |
Individual camera detection range (mm) | 12mm |
Optical resolution (mm/px) | 0.010 |
Minimum detectable defect area (mm) | 0.030x0.030 |
Outer Side Inspection Station | 12 |
Camera | Full colour |
Individual camera detection range (mm) | 12 |
Optical resolution (mm/px) | 0.012 |
Minimum detectable defect area (mm) | 0.036x0.036 |
optional |
5L Hopper |
15L Hopper |
Dust Hood |
Manual cleaning control |
Packaging Machine |
Application of DenT- Double glass table visual inspection machine
Electronic components, precision injection molding, hardware fasteners,
sealing rings,rubber silicone,industrial silver contacts, etc.