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Small knowledge of cold forming equipment


When the cold-formed forming equipment presses the operation command, the main motor of the cold-formed forming unit first drives the cold-formed roll to rotate at a certain speed. This rotation speed is mainly determined by the forming process of the cold-formed equipment components of the fire box, the gear ratio of the mechanism, and the structural size of the cold-formed roll. , The shear force of hydraulic shear and the set operating speed of the unit are determined by parameters.
When the cold bending equipment component detects the position of the photoelectric switch through the hole position of the conveying track, the power-on/off signal is sent to the hole number counter for counting. When the hole number reaches the set value, the position detection signal is issued, and the rotary encoder performs a certain distance Position detection and provide a certain number of pulses to the PLC. After the PLC detects the set number of pulses, it sends deceleration and stop commands to the main motor. At the same time, the main motor stops and sends a cut-off control command to the hydraulic sequence control valve to drive the hydraulic shears to cut off.
According to the above principles, the precision of the cold bending unit designed for the shelf can be achieved: the hole position error does not exceed ±0.1mm, the cumulative hole position error exceeds ±0.5mm, etc. The length control accuracy of a single product is generally controlled at about 0.5mm, which satisfies the shelf to a certain extent. Design accuracy of steel structure assembly.
The servo system of the pre-punching device of the cold-bending unit line stores the dynamic matching problem of the system and the load when the load is running.
Rolling stability problem of cold-formed forming machine, the problem of material deflection in the raceway is often encountered in production, in fact, a single set of rollers is asymmetrical, the left side is stressed, and the material deviates to the right; the right side is heavily stressed. , The material swings to the left. The solution method is: accurate calculation of the neutral layer in the deformation zone, accurate calculation of the materials used in the deformation zone, and good symmetry of the roller processing; the non-deformation area should not be compressed as much as possible (such as the bottom of the slide rail), and the gap between the upper and lower rollers during assembly Keep the same; before the material bites in, the guide slope should be set according to the rolling state of the front track, and the material will slide smoothly in the roll before the stable pressure.
The problem of bending and distortion in the production of bending forming machines is mainly caused by unbalanced forces, unbalanced left and right forces, bending left and right, unbalanced forces up and down, resulting in distortion.

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