Troubleshooting common issues with Pipe Bending Machines

Mechanical system failure:

1. Bending angle is not accurate

Cause: mold wear, inaccurate positioning or loose clamping device.

Solution: Check and adjust the position of the mold to ensure that the clamping device is firm, if necessary, replace the worn mold.

2. Pipe sliding in the clamping device

Cause: Insufficient clamping force.

Solution: Increase the clamping force to ensure that the pipe is firmly clamped.

3. Pipe surface scratches

Cause: Foreign matter on the surface of the mold, burrs on the surface of the pipe or excessive clamping force.

Solution: Clean the surface of the mold, remove burrs on the surface of the pipe, and reduce the clamping force appropriately.

Hydraulic system failure:

1. Hydraulic oil leakage

Cause: seals are damaged or aging.

Solution: check the hydraulic system seals, repair or replace the leaking parts.

2. Hydraulic cylinder jamming or unstable operation

Cause: there are impurities in the hydraulic oil, oil temperature is too high or hydraulic cylinder internal wear.

Solution: clean the hydraulic oil, replace the hydraulic oil filter, check the internal hydraulic cylinder and repair or replace worn parts.

3. Insufficient system pressure

Cause: insufficient oil supply pump, relief valve failure or throttle hole clogging.

Solution: Check the operation of the oil pump, clean or replace the relief valve, clean the throttle hole.

Electrical system failure:

1.CNC system dead or jammed

Cause: Software problem or hardware failure.

Solution: Restart the system, check whether the software version needs to be updated, and contact professional technicians for hardware check if necessary.

2. Electrical switch failure

Cause: Switch aging or poor contact.

Solution: Check and replace the malfunctioning electrical switch.

Bend quality problems

1. Bend at the crease

Cause: wrinkle mold location is not appropriate, the mandrel support is not enough or the mold gap is too large.

Solution: adjust the position of the anti-wrinkle mold, increase the number of mandrels or adjust the mandrel position, reduce the mold gap and increase pressure.

2. Bend at the wall thickness thinning

Cause: insufficient thrust, mold pressure or uneven wall thickness of the pipe.

Solution: increase the boost and boost speed, adjust the mold pressure to ensure uniform wall thickness of the pipe.

3. Bend pipe rebound

Cause: elastic recovery of the pipe material.

Solution: use the compensation method or correction method, adjust the mold design or increase the correction device.

Other problems

1. Straight sections appear after bending the pipe

Cause: Insufficient mandrel support.

Solution: Re-process the mandrel connection part and reduce the mandrel spacing.

2. Abnormal noise and vibration of hydraulic system

Cause: Leakage of suction pipe, oil viscosity is too high or too low.

Solution: Check the sealing of the suction pipe and replace the hydraulic oil with suitable viscosity.