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?We are experiencing difficulties because the detection of double sheet metal feeding with expensive contact displacement sensors costs too much.

Hello, I am a user of sheet metal working equipment.

I engage in 0.5 mm-thick sheet metal working on spot welding lines. Although they happen very rarely, when feeding sheet metal on the line, double-feed errors do occur and these cause defective products.

Currently, to prevent this, we use contact displacement sensors with a repeatability of 1 μm and make them display the thickness to assess whether the number of fed sheets is one or more (if the thickness is greater than 0.5 mm, it is assessed as an error).

In this way, defective products have been prevented, but we have a problem because those sensors are too expensive.

Do you have any better solution?

!Cost reduction, achieving the same precision as contact displacement sensors!

Thank you for your inquiry.

Is value indication really necessary in the detection of sheet metal double feeding?
Contact displacement sensors with a display unit may be an over-engineered solution for positioning on automated lines.

Metrol precision positioning switches can achieve as high precision as contact displacement sensors at a low price without requiring expensive amplifiers.
High repeatability of 1 μm is achieved at a low price. With precision positioning switches, double feed detection of sheet metals with a combined thickness of only 0.7 mm can easily be done.

Please reconsider if value indication is really necessary for positioning on automated lines.