How often should the nozzles of a pipe bending machine be cleaned during production?
Many operators, upon encountering decreased bending accuracy or surface scratches, immediately adjust parameters or change the mold. However, the issue might be less complex—how long has it been since you cleaned the nozzles?
Nose orifices are small and prone to clogging. Clogging prevents coolant from spraying out, resulting in inadequate lubrication and scratches on the pipe surface. Below, I will explain the cleaning frequency and methods according to the production schedule.
Daily: Take a quick look and wipe clean
Before powering on, take ten seconds to glance at the nozzles to check if the mist is even. If it's crooked, split, or not working at all, address it that day. Also, wipe the sensors and safety light curtains with a dry cloth; dust can cause false alarms. These small actions save a lot of troubleshooting time.
Weekly: Deep clean after disassembly
When shutting down on the weekend, disassemble the nozzles, soak them in a special cleaning agent, and clean them with a soft brush. Never use a wire or needle to poke them—if the nozzle is damaged, the mist will be crooked, and replacing the nozzle is more expensive. Also, clean the grease from the guide rails and linear bearings and reapply grease. Disassemble the clamping molds and wipe the contact surfaces to prevent debris from causing the pipes to slip.
Monthly: Check the electrical cabinet and cooling system
Open the electrical cabinet and clean the dust from the filters and cooling fans. Poor ventilation can cause overheating alarms and control system problems. Also check the spindle system and hydraulic lines to prevent contaminants from entering the seals.
Adjust cleaning frequency according to the environment:
If your pipe bending machine is near laser cutting or grinding stations with high dust levels, the cleaning frequency needs to be increased—cleaning the nozzles every three days is not unreasonable. In a clean room, the frequency can be extended appropriately, but daily visual inspection is essential. If the machine has been idle for a long time, clean it before restarting to prevent dust accumulation from affecting accuracy.
When should you replace the nozzles?
If the spray is still uneven after cleaning, or the pressure is significantly lower, it means the nozzles are worn. Replace them immediately; don't compromise. A nozzle doesn't cost much, but delaying product quality is a real loss.
Although nozzles are small, clogging them can cause significant problems. Check them daily, disassemble and clean them weekly, and inspect the electrical cabinet monthly; increase the frequency of checks if the environment is dirty. Keep a few new nozzles on hand in the workshop; don't wait until the hoses are damaged before looking for the cause.
