
Product Introduction
Our Metal-sheet Double-feed Detector GD series is designed to detect double overlapping of various metals ranging from ultra-thin lead frames to iron plates. It adopts advanced detection technology and supports simple sensitivity teaching with real samples, perfectly applied in stamping and metal sheet feeding automation lines to prevent double sheet feeding faults.
Key Benefits



Technical Specifications
|
Item |
Detailed Parameters |
|
Product Name |
Metal-sheet Double-feed Detector GD series |
|
Detectable Material |
Various metals, from ultra-thin lead frames to iron plates |
|
Minimum Detectable Thickness |
0.01mm for double overlapping metal |
|
Detection Distance Between Heads |
GD-3: within 10mm; GD-10: within 30mm; GD-20: within 70mm |
|
Power Supply Voltage |
12V DC ~ 24V DC ±10% |
|
Output Type |
NPN open collector transistor output |
|
GD-3 Dimension |
φ3.8mm ×15mm |
|
GD-10 Dimension |
W12mm × H32.2mm × D7.1mm |
|
GD-20 Dimension |
W37mm × H33.7mm × D30mm |
|
GD-C1/C2/C3 Controller Dimension |
W110mm × H90mm × D67mm |
|
Channel Storage |
Up to 8 channels of sensitivity data storage |
|
Self-diagnosis Items |
7 diagnostic items including circuit fault and cable breakage |
|
Indicator |
7 LED lights for real-time detection level display |

Why Choose This Machine
Metal-sheet Double-feed Detector GD series delivers stable double sheet detection performance for metal processing automation. It features simple teaching operation, self-diagnosis alarm and multi-channel memory, which greatly reduces mold damage risks caused by double overlapping sheets. It fits flexible production requirements and can seamlessly integrate into your existing stamping and metal sheet processing automation system.
Part of Your Smart Factory
This detector can connect with PLC and other automation controllers, fitting well into smart factory stamping and sheet metal production workflows. It automatically monitors sheet feeding quality and sends alarm signals when double metal sheets are detected. It helps realize unmanned feeding inspection, reduce downtime and improve the overall operational efficiency of your intelligent production line.

Applications & Components
►Stamping production line feeding inspection: Detect overlapping metal sheets to avoid double sheet feeding during sheet metal stamping process.
►Lead frame manufacturing inspection: Check ultra-thin lead frame overlap to protect stamping molds from damage.
►Iron plate blanking automation: Monitor iron sheet feeding condition and stop machine immediately once double overlapping occurs.

FAQ
Q: What is the minimum thickness of overlapping metal this detector can identify?
A: It can reliably detect double overlapping metal with thickness above 0.01mm, covering ultra-thin lead frames and common iron plates used in stamping workshops.
Q: How can we set sensitivity for different metal workpieces?
A: It supports sample teaching function. You can complete sensitivity calibration step by step using real workpieces, and save up to 8 groups of sensitivity parameters for quick product changeover.
Q: What faults can the self-diagnosis function check?
A: It runs diagnosis on 7 different items, including internal circuit failure and cable disconnection. Diagnostic results will be output and displayed via dedicated indicator lights for easy troubleshooting.
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