What Happens Inside a Cupper? (Part 2) IPS CanSCHOOL

Introduction

This tutorial explores the cup forming process within a cupper, specifically how coil stock is transformed into circular blanks and subsequently shaped into cups. Understanding this process is crucial for optimizing can production efficiency and precision.

Step 1: Understanding Coil Stock Preparation

• Coil Stock Overview: Begin with a continuous coil of metal, which serves as the raw material for can production.
• Preparation: Ensure the coil is properly fed into the cupper, aligned correctly to avoid misprocessing.

Step 2: Blanking Process

• Blanking Definition: This is the initial step where circular blanks are cut from the coil stock.

Process Steps

1. Set Up Blank Die: Position the blanking die in the cupper.
2. Feed Coil into Die: The coil is advanced to the die where it will be cut.
3. Blanking Action: The press makes a single stroke, cutting out circular blanks from the coil.
• Tip: Regularly check the die for wear to maintain precision in blank size.

Step 3: Drawing Process

• Drawing Definition: After blanking, the blanks are transformed into cup shapes through a process called drawing.

Process Steps

1. Align Blanks: Ensure that the blanks are properly aligned for the drawing operation.
2. Set Up Drawing Die: Install the drawing die in the cupper.
3. Single Stroke Drawing: The press performs a single stroke that pulls the blank into the die, forming the cup shape.
• Common Pitfall: Monitor the temperature of the metal; overheating can lead to defects in the cup shape.

Step 4: Quality Control Checks

• Importance of Quality Control: Regular inspections ensure that the cups meet specifications and maintain production standards.

QC Steps

1. Visual Inspection: Check for defects such as dents or improper shapes.
2. Dimensional Checks: Use calipers to measure the diameter and height of cups.
3. Strength Tests: Perform tests to ensure the cups can withstand intended use.

Conclusion

The cup forming process in a cupper involves careful preparation, blanking, and drawing of metal coil stock. By following these steps and maintaining quality control, you can enhance the efficiency of your can production. For more in-depth guidance or support, consider reaching out to IPS CanSCHOOL.