Automated Feeding Detection in Industry: Importance and Necessity of Double-sheet Detection

Double-sheet Detection Controller consists of a terminal and sensors. Sensors are fixed to the machine structure or conveyor and send detection signals to the terminal in real time. The terminal analyzes overlap degree; if overlap is confirmed, it sends a signal to the PLC so the overlapped metal sheet can be ejected, ensuring normal machine operation.

Importance and necessity of double-sheet detection:

1) Ensure production efficiency

For example, manufacturers of tinplate know that a protective oil layer exists on the surface. During feeding before printing or coating, overlapping of two or more tinplate sheets may occur, causing misregistration, jams and damage to rubber rollers. To ensure smooth production, an overlap detection and control function is essential.

2) Save labor

In some lid-making factories, overlapping lids can occur during stamping or rolling processes. These overlapping lids must not enter subsequent stages. Some factories rely on manual inspection to pick them out, which increases labor and risks misses. Installing automatic electronic double-lid overlap detection replaces manual work and saves labor.

3) Prevent material waste

Material waste exists in every manufacturing process. Overlap-related waste accounts for a significant portion; double-sheet detection avoids unnecessary material loss.

4) Protect expensive dies and equipment

Dies are costly components; a set may cost tens of thousands. Overlap during stamping can damage dies, so double-sheet detection prevents double metal sheets from being stamped and protects dies.

5) Ensure product quality

Quality and cost are core competitive factors. Effective cost control reduces expenses while high product quality improves customer satisfaction and trust.

Double-sheet detection controllers are commonly used in automotive parts production, refrigeration, washing machines, rice cookers and other household appliance metal stamping, bending and cutting processes; high-speed metal lid stamping and other hardware stamping lines.

MDSC-1200C Metal Double-Sheet Detector is a double-material detection sensor independently developed and manufactured by Atonm. It supports single-sheet learning via terminals without manual tuning — a one-button learning mode suitable for lines where manual calibration is inconvenient. Applicable industries: automotive parts, metal coating, printing, metal packaging, household appliance stamping and robotic automated loading/unloading.