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//Bumper Stretch Bending Machinery
Bumper Stretch Bending Machinery2018-06-28T03:07:07+00:00

Stretch Bending Machines

Automotive Door Frame and Bumper Fabrication

We manufacture customized Stretch Bending Machines for automotive door frame production lines. They are capable of 2D or 3D stretch bending, and come with custom bending dies for each model. Basic machine components include the frame, head, tension unit, up-down slide, arm, chuck and hydraulic unit. Advanced models come with jig turntables, clamps and a locking unit. For PLC and electric boxes, the machine has a main control box, an operation box and a sub-operation box. All our stretch bending machines are automated, but can be switched into manual mode by the operator. The basic model has tensile strength of 5,497 kg or 70 kgf/cm2 and bending force of 3,834 kg or 70 kgf/cm2.

Standard Stretch Bending Machine
Size (mm) W6500 X L2930 X H3200
Check Distance (mm) 1600 to 3700
Hinge Distance (mm) 1200
Die Table Height (mm) 1005
Tension Height (mm) 235 to 1035 (from the die table)
Bending Cylinders (2) ø100 X 1000 st. each
Tension Cylinders (2) ø100 X 600 st. each

Stretch Bending Machine with Turntable

This advanced stretch bending machine model is equipped with a turntable for changing dies and tools automatically when producing different models. Its tensile strength and bending force are the same as the standard model.

Stretch Bending Machine with Turntable
Size (mm) W6500 X L3930 X H3200
Check Distance (mm) 1600 to 3700
Hinge Distance (mm) 1200
Die Table Height (mm) 1050
Tension Height (mm) 200 to 1000 (from the die table)
Bending Cylinders (2) ø100 X 1000 st. each
Tension Cylinders (2) ø100 X 600 st. each

Stretch Bending Machine with Moving Table

This model is ideal for large door frame and bumper structures. Its moving table allows the chuck unit and the tension unit to move and rotate around the frame even for sizes larger than those of passenger vehicles. In addition to the precisely controlled chuck and tension units, the machine includes an arm unit that provides structural support during the bending process. Our machines deliver exact frame shapes within tight tolerances, based on its superior check design and precisely controlled tension unit force and tensile strength.

Stretch Bending Machine with Moving Table

Stretch Bending Machine for Bumper Beams

The Bumper Bending Machine Series forms bumper rails and frames using 2D bending dies. The machine consists of a bending unit, tension unit, chuck, rotation shaft, rotation gear, mandrel, tension slide frame, central clamp and hydraulic unit. The electrical unit consists of the main control, operation and sub-operation components. The machine has a bending force of 49,080 kg or 100 kgf/cm2 and tensile strength of 33, 700 kg or 100 kgf/cm2.

Bumper Stretch Bending Machines
Size (mm) W6000 X L5000 X H3000
Check Distance (mm) 1300 to 1800
Hinge Distance (mm) 1550
Die Table Height (mm) 902
Tension Height (mm) 202 (from the die table)
Bending Cylinders (2) ø250 X 600 st. each
Tension Cylinders (2) ø250 X 350 st. each