Preface
This article is about the operating procedures for large three-roll plate bending machines. The use of this particular machine requires specific preparation, operation and maintenance procedures in order to ensure that it runs effectively and safely. By carefully following this guide, users can improve their understanding of the machine, as well as its operating procedures and safety warnings.
1. Introduction
The large three-roll plate bending machine is a kind of sheet metal machine used to form sheet material into cylindrical or arc shapes, by passing sheet material between three driven cylindrical rolls. It is suitable for bending a variety of materials such as mild steel, stainless steel, aluminium, copper and brass. This machine is widely used in the manufacturing of shipbuilding, boiler and pressure vessel products, automobile production lines, aerospace sections, fitness and agricultural tools.
2. Important Definitions
Operating Personnel: This term refers to all personnel specifically designated as qualified and trained to operate the large three-roll plate bending machine.
Rolls: These refer to the three main cylindrical rolls that create a bending action.
Tilt Roll: This is a cylindrical roll located at the rear of the machine, which can be adjusted horizontally in order to adjust the curvature of the bend.
Main Frame: This refers to the frame on which the rolls are mounted.
Saddle: This is a saddle-shaped device on which the sheet material is placed.
Rolling Tool: This is a tool used to move the sheet material through the three rolls.
3. Safety Information
When operating the large three-roll plate bending machine, safety of personnel should be considered. Be sure to use protective equipment including facial shields, gloves, and safety goggles when operating the machine. Additionally, the following must be followed:
• Ensure that all personnel operating the machine are properly trained and instructed in its operation.
• All personnel should remain clear of working area when machine is in operation.
• All the locking assemblies and bolts should be securely tightened before operation.
• Make sure all the electrical wiring is confined and unlikely to cause a short circuit or accidents.
• Keep hands and feet away from feeding device and feeder chain.
• Periodically check the pressure, temperature and speed of the lubricating oil to ensure it is operating properly.
• Always make sure the machine is disconnected from power source before making adjustments.
• Make sure all parts are functioning properly before operation.
• The machine should be installed on a level surface that is free from vibration and other vibrations.
4. Preparation Before Operation
Prior to operating the large three-roll plate bending machine, it is essential to check and prepare the following:
• Check for any damages to the machine and replace or fix any damaged or worn-out parts.
• Ensure the power supply and air pressure is ready for operation.
• Open and check the lubricating oil level and check for leakage.
• Check the condition of the roller and bearing.
• Activate the emergency stop switch and check that it is functioning properly.
• Make sure the sheet material is securely attached to the saddle.
• Make sure all the machine components are correctly adjusted.
5. Starting and Operating the Machine
Before starting the large three-roll plate bending machine, all personnel must ensure the area is safe and clear of personnel, and that all the locking devices are securely tightened. Operators can then proceed with the following:
• Take the appropriate position, ensure the machine is in the correct gear, and connect appropriate power supply.
• Tighten the clamps firmly but not overexert them.
• Turn on the main power switch and start the machine.
• Adjust the tilt roll to the desired level, and adjust the roller spacing according to the material being bent.
• Adjust the speed of the rolls according to the material and other factors.
• Move the rolling tool forward and roll the sheet material to the desired curvature.
• Shutdown the machine once the work is finished.
• Remove the sheet material and clean all the rollers for subsequent operations.
6. Maintenance
After each use of the large three-roll plate bending machine, operators should thoroughly check the condition of the machine and all its parts. Make sure that all the moving parts are properly lubricated and all the parts are in good working order.
Some periodic maintenance tasks, such as oil changes, need to be performed at least every six months in order to ensure the machine is properly maintained and keeps running in top condition. As part of a regular maintenance cycle, make sure that all components are properly tightened and lubricated and that all safety devices are functioning properly.
7. Conclusion
The large three-roll plate bending machine is an efficient and effective sheet metal forming machine. Though it is simple to use, operators need to be familiar with its operation and the related safety warnings in order to use this machine the safest and most efficient way possible. By carefully following these operating procedures and regularly inspecting the machine; its components and safety devices, users can ensure that their machine is working properly and safely.
