Since the seventies, with the development of cold-formed steel production, roll cold-forming machine processing equipment has a series of improvements. Some set up presses for pre-forming before the roll cold-forming machine, some also include punching slot, top heat, punching, tempering, welding and other processes. With the reform of the process, the cold roll forming machine unit equipment composition also changed.
The Soviet Union and Japan divide the cold roll forming machine into two types according to the process: continuous forming machine, roll cold forming machine and single-piece forming machine.
The characteristics of this type of unit are that the coiled strip is used as the blank, and the coil head and tail are sheared, butt welded, straightened, and the strip loop storage device is used in the feeding stage of the continuous cold forming unit;
The blank strip is continuously cold-formed by the forming machine, and the finished product is cut to a fixed length by a flying shear or a flying saw when the material is discharged. The product quality of this unit is good, the production efficiency is high, and the metal yield is high.
The characteristics of this type of unit are that the coiled strip is used as the blank, and the single coil is formed. In the feeding section of the coiled cold bending forming unit, there is only an uncoiler and a straightening machine.
Its equipment is simpler than the continuous cold forming unit, and there is no butt welding machine and looper. The equipment of the discharge section is the same as that of the continuous cold forming unit. The product quality, production efficiency, metal yield, equipment quantity and investment of this type of unit are between those of a continuous cold-formed forming unit and a single-piece cold-formed forming unit.
Its characteristic is that the coiled strip is cut to a fixed length by a fixed length before the roll-type cold bending forming machine, or the original inclined plate of the fixed length is transported by the unit. The blanks are fed into the forming machine one by one for single-piece forming. The equipment of this unit is simpler than the above two, and the investment is lower, but the quality of the product is poor.