Decoilers are essential unwinding equipment used in various industries. They come in different models such as heavy-duty, light-duty, and double-head decoilers. These vertical models serve two main functions: manual operation and automatic operation. In manual mode, operators control the unwinding process using the forward and reverse functions on the control box, enabling machine adjustments and material feeding. On the other hand, automatic mode requires the use of a contact-type sensing rod or sensing frame to control continuous material feeding, ensuring seamless operation.

Troubleshooting Sensing and Stop Issues

While decoilers are generally stable and experience minimal faults, automated continuous unwinding may encounter issues with sensing the start and stop signals. In such cases, it is crucial for operators to promptly address these problems to prevent any disruptions to the stamping process and ensure smooth production.

If you encounter difficulties with sensing the start and stop signals, consider the following potential causes and their corresponding solutions:

1. Delay Time Setting of the Time Relay

Issue: The delay time setting of the time relay in the decoiler’s control box is too long. Solution: To resolve this issue, completely power off the decoiler, open the control box, and adjust the delay time of the time relay to a shorter duration. This adjustment guarantees that the unwinding speed matches the operation speed of the subsequent leveling machine or punching feeder.

2. Surface Film or Non-Conductive Material

Issue: The surface of the coil material has a film or consists of non-conductive material. Solution: If the material rack cannot be sensed due to a film or non-conductive material, consider changing the sensing method of the decoiler to a microswitch or photoelectric switch sensing method. For unwinding non-conductive or film-coated materials, please reach out to us for necessary modifications.

3. Loose or Poorly Connected Sensing Wires

Issue: The sensing wires connected to the sensing rod or sensing frame are loose or have poor contact. Solution: Ensure that the sensing circuit of the decoiler is thoroughly checked to guarantee reliable and unobstructed connections. Tighten any loose wires and ensure proper contact for uninterrupted sensing.

4. Damaged Electrical Components

Issue: The time relay, intermediate relay, or small transformer inside the decoiler’s control box is damaged. Solution: If none of the previous solutions resolve the sensing issue, it indicates a fault in the electrical components responsible for controlling the sensing function within the control box. Contact us immediately to arrange a replacement and resolve the issue promptly.

Resolving Sensing and Stop Issues

The methods for resolving sensing and stop issues in heavy-duty decoilers, light-duty decoilers, double-head decoilers, as well as combined material racks with leveling machines and various leveling machines and straighteners, are identical. Operators should conduct targeted inspections and address the problems accordingly.

By addressing these potential issues and following the appropriate solutions, operators can ensure the efficient and uninterrupted functioning of their decoilers. Prompt troubleshooting not only prevents production line interruptions but also contributes to a seamless stamping process, improving overall productivity.

For any further assistance or specific modification requirements related to unwinding non-conductive or film-coated materials, please don’t hesitate to contact us. We are here to provide the necessary support and solutions to meet your needs.