Case 1: Mold Falling Injury Accident Caused by Locking Failure (2025 Official Case)
1. Accident Overview
In a metal stamping enterprise in 2025, the operator completed mold replacement and started trial production after simple manual locking. After dozens of stamping cycles, the mold loosened gradually due to equipment vibration. The unchecked loose mold fell suddenly during gap adjustment, hitting the operator’s arm and causing serious crush injury.
2. Root Cause Analysis
The core cause is the defect of traditional manual locking structure. It lacks automatic pressure maintaining and real-time loosening monitoring. Long-term vibration will inevitably lead to locking failure. Without equipment interlock protection, hidden dangers cannot be blocked in time, resulting in sudden falling accidents.
3. Qiaosen Safety Prevention
Qiaosen’s hydraulic pressure maintaining locking system always keeps the mold in a tight state against vibration. The real-time monitoring system will alarm and lock the machine once slight loosening is detected. Double mechanical and hydraulic anti-fall structure completely avoids mold falling risks.
Case 2: Unlocked Trial Stamping Mold Damage & Injury Accident (2025 Typical Workshop Case)
1. Accident Overview
After mold replacement, the maintenance staff did not confirm the locking state and directly started trial stamping on a traditional punch press. The unfixed mold shifted instantly under stamping pressure, causing mold burst and flying debris, which caused scratch injury to on-site personnel and huge mold economic losses.
2. Root Cause Analysis
Traditional punch presses have no mold state interlock logic. The equipment can start normally even if the mold is not locked in place. It relies entirely on manual confirmation, which cannot avoid omission and negligence, leading to invalid locking and dangerous trial stamping behaviors.
3. Qiaosen Safety Prevention
Qiaosen sets strict mold safety interlock logic. The system automatically identifies the mold locking state. The stamping function is completely locked when the mold is not in place or abnormal, and trial stamping is prohibited. It fundamentally prevents safety and quality accidents caused by unlocked mold operation.
Mold Hidden Danger Accident Ratio Comparison
|
Mold Accident Type
|
Industry Occurrence Rate
|
Qiaosen Prevention Effect
|
|
Vibration-induced mold loosening failure
|
42%
|
100% avoided by pressure maintaining locking
|
|
Unlocked trial stamping accident
|
31%
|
System interlock prohibits dangerous startup
|
|
Mold falling during maintenance
|
17%
|
Double anti-fall structure zero risk
|
|
Mold displacement & damage
|
10%
|
Real-time calibration & monitoring protection
|
Case Supplementary Q&A
Q1: Can regular manual inspection avoid mold loosening accidents?
A1: No. Mold loosening is gradual and invisible under long-term vibration. Manual inspection cannot monitor real-time changes. Only equipment automatic monitoring and pressure maintaining locking can ensure long-term mold safety.
Q2: What are the losses caused by mold safety accidents?
A2: It not only causes personnel crush and scratch injuries, but also leads to high-cost mold scrapping, production shutdown and defective products, bringing double losses of safety accidents and economic benefits.
Q3: What is the standard of high-safety mold system?
A3: It must have automatic locking & pressure maintaining, real-time loosening monitoring, anti-fall mechanical structure and unlocked startup interlock, forming full-link closed-loop protection for mold installation, production and maintenance.
Industry Summary
Most mold-related accidents are caused by defective locking design and lack of equipment interlock. Manual supervision and regular inspection have limited effect. Qiaosen punch presses build a professional full-process mold safety protection system, eliminate mold falling, loosening and mis-startup hidden dangers from the source, and provide stable and reliable safety guarantee for stamping mold replacement and batch production.
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