Trim & Flashing Roll Forming Machine User Manual | Setup, PLC Controls & Operation Guide

Trim & Flashing Roll Forming Machine Manual

Complete Setup, Operation, Controls and Production Guide

Introduction

This Trim & Flashing Roll Forming Machine Manual provides a complete guide for safely setting up, operating, and maintaining a roll forming production line used to manufacture metal trim and flashing profiles.

Trim and flashing profiles are essential components used in roofing and wall cladding systems to seal edges, corners, and joints while protecting buildings from water penetration.

Metal trim and flashing products are widely used in:

• metal roofing systems
• wall cladding systems
• steel building construction
• residential roofing
• commercial building envelopes

Common trim and flashing profiles include:

• ridge caps
• drip edge flashing
• valley flashing
• rake trim
• corner flashing
• base trim
• gutter apron flashing
• parapet flashing

Trim and flashing machines allow manufacturers to produce multiple profiles from steel coil using adjustable tooling or interchangeable roll sets.

This manual explains:

• loading steel coil onto the uncoiler
• preparing and feeding strip into the machine
• aligning entry guides and roll forming stations
• programming trim lengths
• operating PLC controls and jog systems
• testing the hydraulic cutting system
• inspecting finished trim and flashing components
• troubleshooting production issues

This manual is intended for:

• roll forming machine operators
• roofing manufacturers
• steel building manufacturers
• sheet metal fabrication companies
• maintenance technicians

1. Machine Overview

A Trim & Flashing Roll Forming Machine forms flat steel strip into flashing and trim profiles used in roofing and cladding systems.

The machine gradually bends the metal strip through a series of roll forming stations to produce the final profile shape.

Many trim machines are designed to produce multiple flashing profiles by adjusting tooling positions or changing roll sets.

Trim and flashing profiles are used in:

• roof edge finishing
• sealing roof joints
• protecting wall panel edges
• directing water away from building structures
• finishing roof and wall transitions

Typical Materials Processed

Common materials include:

• pre-painted steel coil
• galvanized steel
• galvalume steel
• aluminum coil

Typical Material Thickness

0.40 mm – 0.80 mm

Typical Production Speed

15 – 30 meters per minute

Production speed depends on:

• profile complexity
• material thickness
• machine configuration

2. Typical Machine Layout

A typical trim and flashing roll forming production line includes:

• Hydraulic Uncoiler
• Entry Guide System
• Roll Forming Stations
• Encoder Length Measuring System
• Hydraulic Cutting System
• PLC Control Panel
• Runout Table or Stacker

Material flow through the machine:

Steel Coil → Entry Guides → Roll Forming Stations → Encoder → Hydraulic Cutoff → Finished Trim or Flashing Profiles

3. Safety Before Operating the Machine

Operators must perform safety checks before starting production.

Pre-Start Safety Inspection

Before starting the machine ensure:

• emergency stop buttons function properly
• machine guards are installed
• hydraulic hoses are secure
• electrical cabinets are closed
• no tools are left inside the machine

Required Personal Protective Equipment

Operators should wear:

• safety glasses
• steel toe boots
• gloves when handling metal
• hearing protection

Important Safety Rules

• never reach into roll forming stations during operation
• never stand directly in front of moving strip
• never remove guards while machine is running
• stop machine before adjustments

4. How to Load Steel Coil onto the Uncoiler

Step-by-Step Procedure

1. Stop the roll forming machine completely.
2. Retract the uncoiler mandrel.
3. Lift coil using forklift or overhead crane.
4. Position the coil in front of the mandrel.
5. Slide the coil onto the mandrel.
6. Expand the mandrel until the coil is secured.
7. Center the coil evenly.
8. Install hold-down arm if available.
9. Adjust uncoiler brake tension.

What to Watch For

• coil not centered
• coil slipping on mandrel
• excessive brake pressure
• loose mandrel expansion

Improper loading may cause strip tracking issues and flashing profile defects.

5. Preparing the Coil Leading Edge

Before feeding strip into the machine the coil edge must be prepared.

Procedure

1. Carefully remove steel banding.
2. Prevent sudden coil expansion.
3. Inspect the first 300–500 mm of strip.
4. Cut away damaged material.
5. Square the leading edge.
6. Remove burrs if necessary.

Why This Step Matters

Damaged strip edges can cause:

• feeding problems
• roller scratches
• machine jams
• poor trim profile accuracy

6. Threading the Coil Through the Machine

Procedure

1. Open entry guides fully.
2. Feed strip manually into the first roll station.
3. Use jog mode to slowly move strip forward.
4. Continue feeding through roll forming stations.
5. Guide strip through cutting section.
6. Feed strip onto runout table.

Safety Warning

Never place hands between rotating rolls during operation.

7. Aligning and Centering the Strip

Proper strip alignment ensures accurate trim profiles.

Procedure

1. Observe strip entering first roll station.
2. Adjust entry guides left or right.
3. Ensure strip runs parallel to machine centerline.
4. Maintain equal clearance between guides.
5. Run machine slowly to observe strip tracking.

Signs of Poor Alignment

• trim profile twisting
• uneven bends
• strip drifting sideways
• excessive guide contact

Correct alignment ensures consistent trim dimensions and production quality.

8. Complete Trim & Flashing Machine Setup Parameters

Material Type: Pre-painted steel / galvanized steel
Material Thickness Range: 0.40 – 0.80 mm
Coil Width: 200 – 600 mm depending on trim profile
Coil Weight: Up to 3 tons
Coil Inner Diameter: 450 – 520 mm
Entry Guide Clearance: Coil width + 1–2 mm
Forming Stations: 8 – 14 stations
Machine Speed (Setup): 5 – 10 m/min
Machine Speed (Production): 15 – 30 m/min

Roll Gap Setup

Roll gap should be set to:

Material thickness + 0.03–0.05 mm clearance

Example:

Material thickness = 0.50 mm
Recommended roll gap = 0.53 mm

Incorrect roll gap may cause:

• flashing distortion
• roller wear
• inaccurate profile shape

9. PLC Control System Overview

Modern trim and flashing machines use a PLC touchscreen control system.

The PLC controls:

• machine start and stop
• trim length programming
• production quantity
• machine speed control
• hydraulic cutting timing
• encoder measurement

10. PLC Control Panel Functions

Typical controls include:

Start Button – starts machine
Stop Button – stops machine
Emergency Stop – emergency shutdown
Manual Mode – used during setup
Automatic Mode – used during production
Length Input – sets trim length
Production Counter – tracks quantity

11. Jog Mode Operation

Jog mode allows controlled machine movement during setup.

Jog Mode Uses

• feeding strip through machine
• aligning strip
• positioning strip for cutting setup

Jog Procedure

1. Switch machine to Manual Mode
2. Press Jog Forward
3. Machine moves slowly
4. Release button to stop

12. Programming Trim Length

Procedure

1. Open PLC production screen
2. Enter required trim length
3. Confirm measurement units
4. Run a test piece
5. Measure finished length
6. Adjust encoder calibration if required

13. Encoder Length Measurement System

Trim length is measured using an encoder wheel contacting the strip.

Typical accuracy:

±1 mm

14. Hydraulic Cutting Operation

The hydraulic shear cuts flashing profiles to programmed length.

Cutting sequence:

1. Encoder measures programmed length
2. PLC activates hydraulic valve
3. Hydraulic cylinder moves cutting blade
4. Trim piece is cut

17. Inspecting Finished Trim and Flashing

Operators should inspect products during production.

Inspection checklist:

• trim length
• bend angles
• profile dimensions
• straightness
• surface finish
• cut quality

18. Trim & Flashing Production Troubleshooting Guide

Profile Twisting
Possible Causes: strip misalignment
Recommended Solution: adjust entry guides

Incorrect Bend Angles
Possible Causes: roll station adjustment incorrect
Recommended Solution: adjust roll stations

Surface Scratches
Possible Causes: debris on rollers
Recommended Solution: clean rollers

Incorrect Length
Possible Causes: encoder calibration issue
Recommended Solution: recalibrate encoder

22. Trim & Flashing Roll Forming Machine Technical Specifications

Forming Stations: 8 – 14 stations
Material Thickness Range: 0.40 – 0.80 mm
Production Speed: 15 – 30 m/min
Drive System: Chain drive or gearbox drive
Cutting System: Hydraulic cutoff
Control System: PLC touchscreen control
Coil Weight Capacity: 2 – 3 tons
Coil Inner Diameter: 450 – 520 mm
Electrical Power Requirement: 380 – 480V three-phase power

23. Best Operator Practices

Experienced operators follow these practices:

• inspect the first trim piece carefully
• monitor profile bends during production
• maintain proper strip alignment
• keep rollers clean
• stop machine immediately if abnormal noise occurs

Proper operation ensures consistent flashing quality and long machine life.