1. Manual straightening
Manual straightening generally adopts straightening platform straightening, hand winch straightening, snake-shaped pipe straightening frame straightening.
(1) Straightening Platform
There are chucks at both ends of the straightening table, and wrenches are welded on the chucks. The straightening platform is used in conjunction with the steel wrench to straighten the rough steel bar with diameter greater than 12 mm. The straightening method is to place the reinforcing bar between the splint plate and the column, to dispose the bending on the plate, and then to straighten the reinforcing bar with a steel wrench.
(2) Straightening hand winch
Hand winch straightening is often used to straighten the diameter of round steel below 10 mm. The operation method is to open the reinforcing bar to a certain length by hand winch, then cut the reinforcing bar, clamp the anchor at the shear place with clamp, and continue to shake the winch, and then straighten the reinforcing bar.
(3) Straightening of serpentine tube straightener
Straightening coil straightening frame is used for cold drawing low carbon steel wire. The operation method is that the conductor is pulled forward by human power through the snake-shaped tube and can be straightened. If there is a local slow bend point, it can be hammered straight.
2. Mechanical Straightening
The commonly used mechanical straightening methods are steel bar straightener and hoist straightener.
(1) Straightening of straightener
This machine is suitable for straightening disc steel bar and cold drawn steel bar whose diameter is less than 14 mm. The steel bar can be cut automatically according to the required length. In the straightening process, the scale, rust spots and dirt on the surface of steel bars can be removed, which plays a role of rust removal. There are many kinds of steel straighteners. The models currently used are gt1.6/4, gt3/8 and gt6/12.
The steel straightener drives the straightening block to straighten the steel bar continuously through the high-speed flying cylinder.
In order to improve work efficiency and simplify working procedure, the bar straightener is obtained by adding cutting function on the basis of straightener. The steel bar straightening and cutting machine automatically straightens and cuts the steel bar, which can remove the oxide skin and stain on the surface of the steel bar. It is a common steel bar forming machine. Especially for NC bar straightening and cutting machine, photoelectric pulse counting principle is adopted. The straightening machine is equipped with photoelectric length measurement, root control and photoelectric zero adjustment device, which can automatically control the number of root cutting and stop the machine.
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