Strip Entry Support Leg in Roll Forming Machines — Structural Stability & Entry Table Support Guide

Strip Entry Support Leg in Roll Forming Machines — Complete Engineering Guide

1. Technical Definition

A strip entry support leg is a vertical structural component used to support the strip entry table, guide assemblies, and feed components in a roll forming machine.

It ensures:

• Stable entry table elevation

• Proper strip height alignment

• Load distribution to floor foundation

• Vibration resistance

• Long-term structural integrity

The support leg transfers entry system loads safely to the foundation.

2. Where It Is Located

Strip entry support legs are typically installed:

• Beneath the strip entry frame

• Along entry table corners

• Under pinch roll support frames

• Adjacent to uncoiler transition zones

• At adjustable leveling points

They connect the entry structure to the floor.

3. Primary Functions

3.1 Support Entry Structure

Carries weight of frame, rollers, and strip.

3.2 Maintain Elevation Accuracy

Keeps strip aligned with forming centerline.

3.3 Absorb Dynamic Load

Handles vibration and strip movement forces.

3.4 Provide Leveling Adjustment

Often includes adjustable foot or leveling screw.

4. How It Works

1. Entry frame rests on support legs

2. Legs transfer load to floor

3. Leveling feet adjust height and alignment

4. Anchor bolts secure legs to foundation

5. Strip enters machine at correct elevation

Rigid support ensures stable strip transition.

5. Construction & Materials

Strip entry support legs are commonly fabricated from:

• Structural steel tubing

• Heavy-duty steel channel

• Welded box section

• Reinforced steel plate columns

Powder coating protects against corrosion.

6. Structural Load Considerations

Support legs must withstand:

• Static weight of entry frame

• Strip load (especially heavy gauge)

• Dynamic vibration

• Lateral forces from strip movement

Proper sizing prevents bending or deflection.

7. Leveling & Adjustment Features

Many support legs include:

• Threaded leveling foot

• Lock nut for height setting

• Anchor bolt holes

• Adjustable shim plates

Accurate leveling improves strip tracking.

8. High-Speed Production Considerations

In high-speed roll forming lines:

• Vibration increases

• Dynamic loads rise

• Anchor integrity becomes critical

• Reinforced legs reduce resonance

Unstable legs amplify machine vibration.

9. Heavy Gauge Applications

Thicker materials:

• Increase structural load

• Increase vibration amplitude

• Require heavier leg sections

• Demand reinforced anchoring

Weak legs may flex under load.

10. Light Gauge Applications

Thin materials require:

• Stable entry height

• Minimal vibration

• Precise leveling

Even small misalignment may affect feed accuracy.

11. Common Failure Causes

Typical issues include:

• Anchor bolt loosening

• Weld cracking

• Corrosion

• Leg bending

• Thread wear in leveling foot

Improper floor anchoring reduces stability.

12. Symptoms of Support Leg Problems

Operators may notice:

• Entry frame vibration

• Strip height misalignment

• Noise during operation

• Visible frame movement

• Uneven feed transition

Structural instability affects forming consistency.

13. Installation Requirements

Proper installation requires:

• Level concrete foundation

• Secure anchor bolts

• Correct height adjustment

• Alignment with forming centerline

• Locking of leveling nuts

Improper setup causes long-term misalignment.

14. Maintenance Requirements

Routine inspection should include:

• Anchor bolt torque check

• Level verification

• Weld inspection

• Corrosion monitoring

• Thread condition check

Regular inspection ensures stable support.

15. Safety Considerations

Support leg failure may cause:

• Entry frame collapse

• Strip instability

• Misalignment with forming section

• Production stoppage

• Operator hazard

Structural stability is essential for safe operation.

16. Role in Strip Entry System

The strip entry support leg supports:

• Strip support frame

• Entry guide assemblies

• Pinch roll system

• Alignment sensors

• Lubrication components

It forms a vertical load-bearing element within the entry structural architecture.

Engineering Summary

The strip entry support leg is a vertical structural component that supports the entry table and guide assemblies in roll forming machines.

It:

• Transfers load to foundation

• Maintains strip elevation

• Resists vibration

• Supports alignment

• Ensures long-term structural stability

Though stationary and simple in appearance, it is essential for maintaining consistent strip entry geometry and overall machine stability.

Technical FAQ

What does a strip entry support leg do?

It supports the entry table and transfers load to the floor.

Can misaligned legs affect forming accuracy?

Yes. Incorrect height affects strip centerline alignment.

Are leveling feet important?

Yes. Proper leveling ensures stable strip tracking.

Should support legs be anchored?

Yes. Anchoring prevents vibration movement.

How often should they be inspected?

During routine structural and alignment maintenance checks.