Here are the main components typically found in a roll forming machine:

1. Decoiler/Uncoiler

Function: Holds and unwinds the coil of metal that will be fed into the roll forming machine.
Key Feature: Can be manual or hydraulic and often equipped with a motor for smooth feeding.

2. Entry Guide

Function: Directs the metal strip into the machine, ensuring proper alignment as it enters the first set of rolls.
Key Feature: Helps prevent material misfeeding or misalignment.

3. Roller Stations

Function: Multiple sets of rolls gradually shape the metal as it passes through, achieving the final profile.
Key Feature: Consists of paired rollers, each slightly altering the shape until the final product is formed.

4. Drive System

Function: Powers the rollers and controls the speed of the metal through the machine.
Key Feature: Usually driven by electric motors and sometimes synchronized with the material feed rate.

5. Cut-Off Mechanism

Function: Cuts the formed metal to the required length once the desired shape is achieved.
Key Feature: Can be hydraulic, pneumatic, or mechanical, depending on the machine’s design.

6. Control System

Function: Allows the operator to control the machine, including speed, length of the output, and other operational settings.
Key Feature: Usually includes a PLC (Programmable Logic Controller) to automate and monitor the machine’s performance.

7. Exit Table (Runout Table)

Function: Supports and collects the final product as it exits the machine.
Key Feature: Keeps the formed product aligned and avoids deformation.

8. Hydraulic System (if applicable)

Function: Powers the decoiler, cut-off mechanism, and sometimes the forming process itself.
Key Feature: Provides consistent force to perform operations such as cutting or bending.

Each of these components works together to create the desired metal profile in roll forming machines for various products, such as roof panels, structural profiles, or specific designs like standing seam panels.