Industrial Poka-Yoke · PLC Interlock · Color Sensing

In-Line Weld Splice Taping Inspection Module

A PLC-interlocked poka-yoke device using a color sensor. After welding, the operator must complete and pass the taping inspection before the next splice can be welded, eliminating missed taping at the source. The product has been successfully exported to multiple countries in Europe and Africa.

In-Line Weld Splice Taping Inspection Module overview

Key Features

Mandatory Poka-Yoke Interlock

After welding, the manual weld button is disabled until taping is completed and passes inspection, eliminating missed taping at the source.

Color Sensor Verification

Uses color characteristics to verify taping completeness, providing a low-cost, highly reliable alternative to ultrasonic inspection.

Industrial-Grade Reliability

A modular design connects directly to the welding equipment PLC, requiring no additional industrial PC and delivering simple deployment and stable operation.

Feature Details

PLC-Interlocked Poka-Yoke

After the operator completes a weld, the control unit stops the welder, disables the manual weld button, and illuminates the inspection indicator. Once taping passes inspection, the indicator turns off and the weld button is re-enabled for the next splice.

PLC-interlocked poka-yoke logic
Optical inspection module illustration placeholder

Optical Inspection Unit

When the taped splice is placed in the inspection module, the color sensor verifies its condition. After a pass, the indicator turns off and the PLC unlocks the weld button. Missing tape on twisted-wire splices can short the circuit and cause vehicle communication faults or a no-start condition; this module prevents those defects at the source.

Project Background

Missing tape on twisted-wire splices can short the circuit, causing vehicle communication faults or a no-start condition. Manual inspection and electrical testing cannot provide 100% containment. This module combines a PLC and color sensor in a mandatory poka-yoke interlock to address the issue at its source.

Technology Stack

PLC Color Sensor Industrial Communication
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