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Defect
Detection Unit
The
defect detection unit basically consists of 1) a light receiver
(Camera Unit), 2) a light source (Lighting Unit),
3) a signal processor (SPU), 4) a marker or a labeler, and 5) an encoder.
The light receiver is a camera with a CCD line sensor, and the light
source is usually such as a fluorescent lamp.
There are several lighting methods: transmission mode, diffuse reflection
mode, secular reflection mode, and a mode which uses a combination
of the others.
First
of all, the light from the projector illuminates the material to
be inspected so that the unit can detect defects. The light reflects
on the material to be inspected and reaches the light receiver (camera),
where the light is converted into electric signals. The electrical
signals are transmitted to the signal processor, and then via exclusive
detection and judgment circuits, any defects are recognized.
When a defect is detected, the unit activates the marker, alarm,
rotating light, printer, etc. and indicates the occurrence of the
defect, for example by displaying the defect image on the operator
screen.
Nowadays the defect detection unit is regarded as a more advanced
system, not merely to detect defects but to provide information
to the following processes (for example to a slitter and re-winder
machine) to enable analysis of the causes of defect occurrence.
The systems are continually evolving so they become even more important
in quality enhancement and improvement of product yield.
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| For Futec
machine sales please contact: |
| Robert
Krause: 704-393-0314 ext 585 /
Email: rkrause@texmacusa.com |
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| For
Futec technical support please contact: |
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to order parts for your Futec please contact:
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Texmac Parts Dept: 877-335-5206
Customer Service: Mark Brown ext 561 or Joli Blend ext
572
Parts Manager: Doug Ritch ext 559
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| www.texmacparts.com |
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