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Iron Pipe Bending Machine

Iron Pipe Bending Machine

iron pipe bending machine The slewing mechanism of the iron pipe bending machine mainly has two kinds of rotary cylinders and oil motors, that is, the high-pressure oil pump is driven by the electric motor, and then the rotary oil cylinder or the oil motor is driven by the high-pressure oil pump...

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Product Details

iron pipe bending machine

The slewing mechanism of the iron pipe bending machine mainly has two kinds of rotary cylinders and oil motors, that is, the high-pressure oil pump is driven by the electric motor, and then the rotary oil cylinder or the oil motor is driven by the high-pressure oil pump to rotate the bending mold. The hydraulic pipe bender using the rotary cylinder has a large torque and is suitable for bending large diameter pipes with a nominal diameter of 100 mm or more. The hydraulic pipe bender using the oil motor has a simple structure but a small torque and is only suitable for bending small diameter pipes.

 

Working status:

1. When working, the gear pump is driven by the motor to supply oil to the system.

2. The system pressure is controlled by the relief valve. The pressure oil enters three three-position six-way manual reversing valves through the one-way valve, and the three reversing valves control the movement of the clamping (front collet) and boost (rear collet), main drive and core rod cylinders respectively. ,

3. When starting the pipe bending, start the gear pump, adjust the system pressure, and then operate the control valve for controlling clamping and boosting, the core rod and the main drive, so that the pressure oil enters the cylinder without the rod cavity, so that the front chuck and the rear The chuck is in the clamped state, the core rod is moved forward to the working position, and the main drive piston rod drives the main shaft to rotate the curved tube through the chain.

4. After the end of the elbow, the control core rod, clamping and boosting, main drive reversing valve are sequentially operated, so that the pressure oil enters the cylinder with the rod cavity, the front and rear collet are released, the core rod retreats, and the main shaft rotates back.

5. In order to ensure the clamping of the front chuck first, and then clamp the rear chuck, the front and rear chucks can be loosened at the same time, and the one-way throttle valve is installed in the front chamber of the cylinder of the rear chuck.

6. When the reversing valve is in the neutral position, the system is in a state of discharge and the hydraulic oil flows directly back to the tank.

7. When bending the pipe, the bending die rotates one side to drive the pipe forward, and under the action of the front chuck and the pressing die (slot), the pipe is bent and wound around the bending die.

8. During the entire bending process, the head of the plug is always fixed in a position by the tie rod. This fixed position is very important, which directly affects the quality of the bend.

9. According to the practice of bending, the position of the plug is fixed in front of the starting point, that is, maintaining a correct amount of pre-K. 10. The pre-measurement (advance value) K is the distance from the core position beyond the bend point.

11. Correctly adjust the amount of pre-position K to control the change of tube deformation.

12. The pre-position K value is large, the ellipticity is small, and the tube wall is thin; the pre-position K value is small, the ellipticity is large, and the tube wall is thick.

13. When the ellipticity of the tube is too large, the plug should be extended forward - some; when the tube wall is too thin or even broken, the plug should be retracted backwards.

14. The amount of pre-position K depends on the material, diameter, wall thickness, bending radius, gap between the outer diameter of the plug and the inner diameter of the tube, the shape of the plug and the bender. The exact value should be based on the test. And set.

15. As long as the proper amount of pre-position is maintained, a good bend quality can be guaranteed.

 


DW-130

DW-168

DW-219

Maximum bending capacity

Φ130×10 mm(A3")

Φ168×18mm(A3")

Φ219×25mm(A3")

Maximum bending radius

R=480mm

R=600mm

R=700mm

Minimum bending radius

According to pipe diameter

According to pipe diameter

According to pipe diameter

Maximum bending angle

190°

190°

190°

Effective core length

4500mm

5200mm

6200mm

Bending speed

Max 25°/S

Max 20°/S

Max 15°/S

Bending accuracy

±0.15°

±0.15°

±0.15°

Bend method

Hydraulic drive

Hydraulic drive

Hydraulic drive

The number of bends per tube can be set

20

20

20

Maximum storage capacity of the chip

25 groups

25 groups

25 groups

Oil pump motor power

25KW

45KW

60KW

Hydraulic pressure

16Mpa

16Mpa

16Mpa

Fuel tank capacity

550L

650L

850L

Dimensions

6200×1600×1250

7100×2100×1500

8200×2850×1850

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