The difference between visual inspection machine and manual inspection
Objectivity and consistency of inspection
Visual inspection machine
The visual inspection machine is inspected according to pre-set procedures and standards. It uses the same inspection standards for each product and will not be affected by subjective factors. Whether it is the size, shape or appearance defects of the inspected product, its judgment standards are fixed and objective.
As long as the inspection environment and product type remain unchanged, the consistency of the inspection results is very high, which can ensure the fairness and stability of product quality judgment.
Manual inspection
The results of manual inspection are easily affected by the subjective factors of the inspectors. Different inspectors may have different judgment standards, and even the same inspector may have different judgment standards at different times and emotional states.
For example, different people may have different opinions on slight differences in the appearance color of the product or subtle changes in the surface texture, which leads to poor consistency in the inspection results.
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.